From 7cd468a3d7dee7d6c92f69a0bb7061ae208ec727 Mon Sep 17 00:00:00 2001 From: Damjan Marion Date: Mon, 19 Dec 2016 23:05:39 +0100 Subject: Reorganize source tree to use single autotools instance Change-Id: I7b51f88292e057c6443b12224486f2d0c9f8ae23 Signed-off-by: Damjan Marion --- src/vnet/ipsec/esp.h | 320 ++++++ src/vnet/ipsec/esp_decrypt.c | 430 ++++++++ src/vnet/ipsec/esp_encrypt.c | 425 ++++++++ src/vnet/ipsec/ikev2.c | 2186 ++++++++++++++++++++++++++++++++++++++++ src/vnet/ipsec/ikev2.h | 410 ++++++++ src/vnet/ipsec/ikev2_cli.c | 479 +++++++++ src/vnet/ipsec/ikev2_crypto.c | 765 ++++++++++++++ src/vnet/ipsec/ikev2_format.c | 155 +++ src/vnet/ipsec/ikev2_payload.c | 535 ++++++++++ src/vnet/ipsec/ikev2_priv.h | 321 ++++++ src/vnet/ipsec/ipsec.api | 457 +++++++++ src/vnet/ipsec/ipsec.c | 581 +++++++++++ src/vnet/ipsec/ipsec.h | 344 +++++++ src/vnet/ipsec/ipsec_api.c | 537 ++++++++++ src/vnet/ipsec/ipsec_cli.c | 807 +++++++++++++++ src/vnet/ipsec/ipsec_format.c | 141 +++ src/vnet/ipsec/ipsec_if.c | 372 +++++++ src/vnet/ipsec/ipsec_if_in.c | 175 ++++ src/vnet/ipsec/ipsec_if_out.c | 161 +++ src/vnet/ipsec/ipsec_input.c | 455 +++++++++ src/vnet/ipsec/ipsec_output.c | 478 +++++++++ 21 files changed, 10534 insertions(+) create mode 100644 src/vnet/ipsec/esp.h create mode 100644 src/vnet/ipsec/esp_decrypt.c create mode 100644 src/vnet/ipsec/esp_encrypt.c create mode 100644 src/vnet/ipsec/ikev2.c create mode 100644 src/vnet/ipsec/ikev2.h create mode 100644 src/vnet/ipsec/ikev2_cli.c create mode 100644 src/vnet/ipsec/ikev2_crypto.c create mode 100644 src/vnet/ipsec/ikev2_format.c create mode 100644 src/vnet/ipsec/ikev2_payload.c create mode 100644 src/vnet/ipsec/ikev2_priv.h create mode 100644 src/vnet/ipsec/ipsec.api create mode 100644 src/vnet/ipsec/ipsec.c create mode 100644 src/vnet/ipsec/ipsec.h create mode 100644 src/vnet/ipsec/ipsec_api.c create mode 100644 src/vnet/ipsec/ipsec_cli.c create mode 100644 src/vnet/ipsec/ipsec_format.c create mode 100644 src/vnet/ipsec/ipsec_if.c create mode 100644 src/vnet/ipsec/ipsec_if_in.c create mode 100644 src/vnet/ipsec/ipsec_if_out.c create mode 100644 src/vnet/ipsec/ipsec_input.c create mode 100644 src/vnet/ipsec/ipsec_output.c (limited to 'src/vnet/ipsec') diff --git a/src/vnet/ipsec/esp.h b/src/vnet/ipsec/esp.h new file mode 100644 index 00000000000..50cac806d14 --- /dev/null +++ b/src/vnet/ipsec/esp.h @@ -0,0 +1,320 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef __ESP_H__ +#define __ESP_H__ + +#include +#include +#include + +typedef struct +{ + u32 spi; + u32 seq; + u8 data[0]; +} esp_header_t; + +typedef struct +{ + u8 pad_length; + u8 next_header; +} esp_footer_t; + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + ip4_header_t ip4; + esp_header_t esp; +}) ip4_and_esp_header_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + ip6_header_t ip6; + esp_header_t esp; +}) ip6_and_esp_header_t; +/* *INDENT-ON* */ + +typedef struct +{ + const EVP_CIPHER *type; +} esp_crypto_alg_t; + +typedef struct +{ + const EVP_MD *md; + u8 trunc_size; +} esp_integ_alg_t; + +typedef struct +{ + CLIB_CACHE_LINE_ALIGN_MARK (cacheline0); + EVP_CIPHER_CTX encrypt_ctx; + CLIB_CACHE_LINE_ALIGN_MARK (cacheline1); + EVP_CIPHER_CTX decrypt_ctx; + CLIB_CACHE_LINE_ALIGN_MARK (cacheline2); + HMAC_CTX hmac_ctx; + ipsec_crypto_alg_t last_encrypt_alg; + ipsec_crypto_alg_t last_decrypt_alg; + ipsec_integ_alg_t last_integ_alg; +} esp_main_per_thread_data_t; + +typedef struct +{ + esp_crypto_alg_t *esp_crypto_algs; + esp_integ_alg_t *esp_integ_algs; + esp_main_per_thread_data_t *per_thread_data; +} esp_main_t; + +esp_main_t esp_main; + +#define ESP_WINDOW_SIZE (64) +#define ESP_SEQ_MAX (4294967295UL) + + +always_inline int +esp_replay_check (ipsec_sa_t * sa, u32 seq) +{ + u32 diff; + + if (PREDICT_TRUE (seq > sa->last_seq)) + return 0; + + diff = sa->last_seq - seq; + + if (ESP_WINDOW_SIZE > diff) + return (sa->replay_window & (1ULL << diff)) ? 1 : 0; + else + return 1; + + return 0; +} + +always_inline int +esp_replay_check_esn (ipsec_sa_t * sa, u32 seq) +{ + u32 tl = sa->last_seq; + u32 th = sa->last_seq_hi; + u32 diff = tl - seq; + + if (PREDICT_TRUE (tl >= (ESP_WINDOW_SIZE - 1))) + { + if (seq >= (tl - ESP_WINDOW_SIZE + 1)) + { + sa->seq_hi = th; + if (seq <= tl) + return (sa->replay_window & (1ULL << diff)) ? 1 : 0; + else + return 0; + } + else + { + sa->seq_hi = th + 1; + return 0; + } + } + else + { + if (seq >= (tl - ESP_WINDOW_SIZE + 1)) + { + sa->seq_hi = th - 1; + return (sa->replay_window & (1ULL << diff)) ? 1 : 0; + } + else + { + sa->seq_hi = th; + if (seq <= tl) + return (sa->replay_window & (1ULL << diff)) ? 1 : 0; + else + return 0; + } + } + + return 0; +} + +/* TODO seq increment should be atomic to be accessed by multiple workers */ +always_inline void +esp_replay_advance (ipsec_sa_t * sa, u32 seq) +{ + u32 pos; + + if (seq > sa->last_seq) + { + pos = seq - sa->last_seq; + if (pos < ESP_WINDOW_SIZE) + sa->replay_window = ((sa->replay_window) << pos) | 1; + else + sa->replay_window = 1; + sa->last_seq = seq; + } + else + { + pos = sa->last_seq - seq; + sa->replay_window |= (1ULL << pos); + } +} + +always_inline void +esp_replay_advance_esn (ipsec_sa_t * sa, u32 seq) +{ + int wrap = sa->seq_hi - sa->last_seq_hi; + u32 pos; + + if (wrap == 0 && seq > sa->last_seq) + { + pos = seq - sa->last_seq; + if (pos < ESP_WINDOW_SIZE) + sa->replay_window = ((sa->replay_window) << pos) | 1; + else + sa->replay_window = 1; + sa->last_seq = seq; + } + else if (wrap > 0) + { + pos = ~seq + sa->last_seq + 1; + if (pos < ESP_WINDOW_SIZE) + sa->replay_window = ((sa->replay_window) << pos) | 1; + else + sa->replay_window = 1; + sa->last_seq = seq; + sa->last_seq_hi = sa->seq_hi; + } + else if (wrap < 0) + { + pos = ~seq + sa->last_seq + 1; + sa->replay_window |= (1ULL << pos); + } + else + { + pos = sa->last_seq - seq; + sa->replay_window |= (1ULL << pos); + } +} + +always_inline int +esp_seq_advance (ipsec_sa_t * sa) +{ + if (PREDICT_TRUE (sa->use_esn)) + { + if (PREDICT_FALSE (sa->seq == ESP_SEQ_MAX)) + { + if (PREDICT_FALSE + (sa->use_anti_replay && sa->seq_hi == ESP_SEQ_MAX)) + return 1; + sa->seq_hi++; + } + sa->seq++; + } + else + { + if (PREDICT_FALSE (sa->use_anti_replay && sa->seq == ESP_SEQ_MAX)) + return 1; + sa->seq++; + } + + return 0; +} + +always_inline void +esp_init () +{ + esp_main_t *em = &esp_main; + vlib_thread_main_t *tm = vlib_get_thread_main (); + + memset (em, 0, sizeof (em[0])); + + vec_validate (em->esp_crypto_algs, IPSEC_CRYPTO_N_ALG - 1); + em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_128].type = EVP_aes_128_cbc (); + em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_192].type = EVP_aes_192_cbc (); + em->esp_crypto_algs[IPSEC_CRYPTO_ALG_AES_CBC_256].type = EVP_aes_256_cbc (); + + vec_validate (em->esp_integ_algs, IPSEC_INTEG_N_ALG - 1); + esp_integ_alg_t *i; + + i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA1_96]; + i->md = EVP_sha1 (); + i->trunc_size = 12; + + i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_256_96]; + i->md = EVP_sha256 (); + i->trunc_size = 12; + + i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_256_128]; + i->md = EVP_sha256 (); + i->trunc_size = 16; + + i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_384_192]; + i->md = EVP_sha384 (); + i->trunc_size = 24; + + i = &em->esp_integ_algs[IPSEC_INTEG_ALG_SHA_512_256]; + i->md = EVP_sha512 (); + i->trunc_size = 32; + + vec_validate_aligned (em->per_thread_data, tm->n_vlib_mains - 1, + CLIB_CACHE_LINE_BYTES); + int thread_id; + + for (thread_id = 0; thread_id < tm->n_vlib_mains - 1; thread_id++) + { + EVP_CIPHER_CTX_init (&(em->per_thread_data[thread_id].encrypt_ctx)); + EVP_CIPHER_CTX_init (&(em->per_thread_data[thread_id].decrypt_ctx)); + HMAC_CTX_init (&(em->per_thread_data[thread_id].hmac_ctx)); + } +} + +always_inline unsigned int +hmac_calc (ipsec_integ_alg_t alg, + u8 * key, + int key_len, + u8 * data, int data_len, u8 * signature, u8 use_esn, u32 seq_hi) +{ + esp_main_t *em = &esp_main; + u32 cpu_index = os_get_cpu_number (); + HMAC_CTX *ctx = &(em->per_thread_data[cpu_index].hmac_ctx); + const EVP_MD *md = NULL; + unsigned int len; + + ASSERT (alg < IPSEC_INTEG_N_ALG); + + if (PREDICT_FALSE (em->esp_integ_algs[alg].md == 0)) + return 0; + + if (PREDICT_FALSE (alg != em->per_thread_data[cpu_index].last_integ_alg)) + { + md = em->esp_integ_algs[alg].md; + em->per_thread_data[cpu_index].last_integ_alg = alg; + } + + HMAC_Init (ctx, key, key_len, md); + + HMAC_Update (ctx, data, data_len); + + if (PREDICT_TRUE (use_esn)) + HMAC_Update (ctx, (u8 *) & seq_hi, sizeof (seq_hi)); + HMAC_Final (ctx, signature, &len); + + return em->esp_integ_algs[alg].trunc_size; +} + +#endif /* __ESP_H__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/esp_decrypt.c b/src/vnet/ipsec/esp_decrypt.c new file mode 100644 index 00000000000..e69cd85101a --- /dev/null +++ b/src/vnet/ipsec/esp_decrypt.c @@ -0,0 +1,430 @@ +/* + * esp_decrypt.c : IPSec ESP decrypt node + * + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include + +#include +#include + +#define foreach_esp_decrypt_next \ +_(DROP, "error-drop") \ +_(IP4_INPUT, "ip4-input") \ +_(IP6_INPUT, "ip6-input") \ +_(IPSEC_GRE_INPUT, "ipsec-gre-input") + +#define _(v, s) ESP_DECRYPT_NEXT_##v, +typedef enum +{ + foreach_esp_decrypt_next +#undef _ + ESP_DECRYPT_N_NEXT, +} esp_decrypt_next_t; + + +#define foreach_esp_decrypt_error \ + _(RX_PKTS, "ESP pkts received") \ + _(NO_BUFFER, "No buffer (packed dropped)") \ + _(DECRYPTION_FAILED, "ESP decryption failed") \ + _(INTEG_ERROR, "Integrity check failed") \ + _(REPLAY, "SA replayed packet") \ + _(NOT_IP, "Not IP packet (dropped)") + + +typedef enum +{ +#define _(sym,str) ESP_DECRYPT_ERROR_##sym, + foreach_esp_decrypt_error +#undef _ + ESP_DECRYPT_N_ERROR, +} esp_decrypt_error_t; + +static char *esp_decrypt_error_strings[] = { +#define _(sym,string) string, + foreach_esp_decrypt_error +#undef _ +}; + +typedef struct +{ + ipsec_crypto_alg_t crypto_alg; + ipsec_integ_alg_t integ_alg; +} esp_decrypt_trace_t; + +/* packet trace format function */ +static u8 * +format_esp_decrypt_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + esp_decrypt_trace_t *t = va_arg (*args, esp_decrypt_trace_t *); + + s = format (s, "esp: crypto %U integrity %U", + format_ipsec_crypto_alg, t->crypto_alg, + format_ipsec_integ_alg, t->integ_alg); + return s; +} + +always_inline void +esp_decrypt_aes_cbc (ipsec_crypto_alg_t alg, + u8 * in, u8 * out, size_t in_len, u8 * key, u8 * iv) +{ + esp_main_t *em = &esp_main; + u32 cpu_index = os_get_cpu_number (); + EVP_CIPHER_CTX *ctx = &(em->per_thread_data[cpu_index].decrypt_ctx); + const EVP_CIPHER *cipher = NULL; + int out_len; + + ASSERT (alg < IPSEC_CRYPTO_N_ALG); + + if (PREDICT_FALSE (em->esp_crypto_algs[alg].type == 0)) + return; + + if (PREDICT_FALSE (alg != em->per_thread_data[cpu_index].last_decrypt_alg)) + { + cipher = em->esp_crypto_algs[alg].type; + em->per_thread_data[cpu_index].last_decrypt_alg = alg; + } + + EVP_DecryptInit_ex (ctx, cipher, NULL, key, iv); + + EVP_DecryptUpdate (ctx, out, &out_len, in, in_len); + EVP_DecryptFinal_ex (ctx, out + out_len, &out_len); +} + +static uword +esp_decrypt_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * from_frame) +{ + u32 n_left_from, *from, next_index, *to_next; + ipsec_main_t *im = &ipsec_main; + esp_main_t *em = &esp_main; + u32 *recycle = 0; + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + u32 cpu_index = os_get_cpu_number (); + + ipsec_alloc_empty_buffers (vm, im); + + u32 *empty_buffers = im->empty_buffers[cpu_index]; + + if (PREDICT_FALSE (vec_len (empty_buffers) < n_left_from)) + { + vlib_node_increment_counter (vm, esp_decrypt_node.index, + ESP_DECRYPT_ERROR_NO_BUFFER, n_left_from); + goto free_buffers_and_exit; + } + + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 i_bi0, o_bi0 = (u32) ~ 0, next0; + vlib_buffer_t *i_b0; + vlib_buffer_t *o_b0 = 0; + esp_header_t *esp0; + ipsec_sa_t *sa0; + u32 sa_index0 = ~0; + u32 seq; + ip4_header_t *ih4 = 0, *oh4 = 0; + ip6_header_t *ih6 = 0, *oh6 = 0; + u8 tunnel_mode = 1; + u8 transport_ip6 = 0; + + + i_bi0 = from[0]; + from += 1; + n_left_from -= 1; + n_left_to_next -= 1; + + next0 = ESP_DECRYPT_NEXT_DROP; + + i_b0 = vlib_get_buffer (vm, i_bi0); + esp0 = vlib_buffer_get_current (i_b0); + + sa_index0 = vnet_buffer (i_b0)->ipsec.sad_index; + sa0 = pool_elt_at_index (im->sad, sa_index0); + + seq = clib_host_to_net_u32 (esp0->seq); + + /* anti-replay check */ + if (sa0->use_anti_replay) + { + int rv = 0; + + if (PREDICT_TRUE (sa0->use_esn)) + rv = esp_replay_check_esn (sa0, seq); + else + rv = esp_replay_check (sa0, seq); + + if (PREDICT_FALSE (rv)) + { + clib_warning ("anti-replay SPI %u seq %u", sa0->spi, seq); + vlib_node_increment_counter (vm, esp_decrypt_node.index, + ESP_DECRYPT_ERROR_REPLAY, 1); + o_bi0 = i_bi0; + to_next[0] = o_bi0; + to_next += 1; + goto trace; + } + } + + if (PREDICT_TRUE (sa0->integ_alg != IPSEC_INTEG_ALG_NONE)) + { + u8 sig[64]; + int icv_size = em->esp_integ_algs[sa0->integ_alg].trunc_size; + memset (sig, 0, sizeof (sig)); + u8 *icv = + vlib_buffer_get_current (i_b0) + i_b0->current_length - + icv_size; + i_b0->current_length -= icv_size; + + hmac_calc (sa0->integ_alg, sa0->integ_key, sa0->integ_key_len, + (u8 *) esp0, i_b0->current_length, sig, sa0->use_esn, + sa0->seq_hi); + + if (PREDICT_FALSE (memcmp (icv, sig, icv_size))) + { + vlib_node_increment_counter (vm, esp_decrypt_node.index, + ESP_DECRYPT_ERROR_INTEG_ERROR, + 1); + o_bi0 = i_bi0; + to_next[0] = o_bi0; + to_next += 1; + goto trace; + } + } + + if (PREDICT_TRUE (sa0->use_anti_replay)) + { + if (PREDICT_TRUE (sa0->use_esn)) + esp_replay_advance_esn (sa0, seq); + else + esp_replay_advance (sa0, seq); + } + + /* grab free buffer */ + uword last_empty_buffer = vec_len (empty_buffers) - 1; + o_bi0 = empty_buffers[last_empty_buffer]; + to_next[0] = o_bi0; + to_next += 1; + o_b0 = vlib_get_buffer (vm, o_bi0); + vlib_prefetch_buffer_with_index (vm, + empty_buffers[last_empty_buffer - + 1], STORE); + _vec_len (empty_buffers) = last_empty_buffer; + + /* add old buffer to the recycle list */ + vec_add1 (recycle, i_bi0); + + if (sa0->crypto_alg >= IPSEC_CRYPTO_ALG_AES_CBC_128 && + sa0->crypto_alg <= IPSEC_CRYPTO_ALG_AES_CBC_256) + { + const int BLOCK_SIZE = 16; + const int IV_SIZE = 16; + esp_footer_t *f0; + u8 ip_hdr_size = 0; + + int blocks = + (i_b0->current_length - sizeof (esp_header_t) - + IV_SIZE) / BLOCK_SIZE; + + o_b0->current_data = sizeof (ethernet_header_t); + + /* transport mode */ + if (PREDICT_FALSE (!sa0->is_tunnel && !sa0->is_tunnel_ip6)) + { + tunnel_mode = 0; + ih4 = + (ip4_header_t *) (i_b0->data + + sizeof (ethernet_header_t)); + if (PREDICT_TRUE + ((ih4->ip_version_and_header_length & 0xF0) != 0x40)) + { + if (PREDICT_TRUE + ((ih4->ip_version_and_header_length & 0xF0) == + 0x60)) + { + transport_ip6 = 1; + ip_hdr_size = sizeof (ip6_header_t); + ih6 = + (ip6_header_t *) (i_b0->data + + sizeof (ethernet_header_t)); + oh6 = vlib_buffer_get_current (o_b0); + } + else + { + vlib_node_increment_counter (vm, + esp_decrypt_node.index, + ESP_DECRYPT_ERROR_NOT_IP, + 1); + o_b0 = 0; + goto trace; + } + } + else + { + oh4 = vlib_buffer_get_current (o_b0); + ip_hdr_size = sizeof (ip4_header_t); + } + } + + esp_decrypt_aes_cbc (sa0->crypto_alg, + esp0->data + IV_SIZE, + (u8 *) vlib_buffer_get_current (o_b0) + + ip_hdr_size, BLOCK_SIZE * blocks, + sa0->crypto_key, esp0->data); + + o_b0->current_length = (blocks * 16) - 2 + ip_hdr_size; + o_b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID; + f0 = + (esp_footer_t *) ((u8 *) vlib_buffer_get_current (o_b0) + + o_b0->current_length); + o_b0->current_length -= f0->pad_length; + + /* tunnel mode */ + if (PREDICT_TRUE (tunnel_mode)) + { + if (PREDICT_TRUE (f0->next_header == IP_PROTOCOL_IP_IN_IP)) + { + next0 = ESP_DECRYPT_NEXT_IP4_INPUT; + oh4 = vlib_buffer_get_current (o_b0); + } + else if (f0->next_header == IP_PROTOCOL_IPV6) + next0 = ESP_DECRYPT_NEXT_IP6_INPUT; + else + { + clib_warning ("next header: 0x%x", f0->next_header); + vlib_node_increment_counter (vm, esp_decrypt_node.index, + ESP_DECRYPT_ERROR_DECRYPTION_FAILED, + 1); + o_b0 = 0; + goto trace; + } + } + /* transport mode */ + else + { + if (PREDICT_FALSE (transport_ip6)) + { + next0 = ESP_DECRYPT_NEXT_IP6_INPUT; + oh6->ip_version_traffic_class_and_flow_label = + ih6->ip_version_traffic_class_and_flow_label; + oh6->protocol = f0->next_header; + oh6->hop_limit = ih6->hop_limit; + oh6->src_address.as_u64[0] = ih6->src_address.as_u64[0]; + oh6->src_address.as_u64[1] = ih6->src_address.as_u64[1]; + oh6->dst_address.as_u64[0] = ih6->dst_address.as_u64[0]; + oh6->dst_address.as_u64[1] = ih6->dst_address.as_u64[1]; + oh6->payload_length = + clib_host_to_net_u16 (vlib_buffer_length_in_chain + (vm, + o_b0) - sizeof (ip6_header_t)); + } + else + { + next0 = ESP_DECRYPT_NEXT_IP4_INPUT; + oh4->ip_version_and_header_length = 0x45; + oh4->tos = ih4->tos; + oh4->fragment_id = 0; + oh4->flags_and_fragment_offset = 0; + oh4->ttl = ih4->ttl; + oh4->protocol = f0->next_header; + oh4->src_address.as_u32 = ih4->src_address.as_u32; + oh4->dst_address.as_u32 = ih4->dst_address.as_u32; + oh4->length = + clib_host_to_net_u16 (vlib_buffer_length_in_chain + (vm, o_b0)); + oh4->checksum = ip4_header_checksum (oh4); + } + } + + /* for IPSec-GRE tunnel next node is ipsec-gre-input */ + if (PREDICT_FALSE + ((vnet_buffer (i_b0)->ipsec.flags) & + IPSEC_FLAG_IPSEC_GRE_TUNNEL)) + next0 = ESP_DECRYPT_NEXT_IPSEC_GRE_INPUT; + + vnet_buffer (o_b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + } + + trace: + if (PREDICT_FALSE (i_b0->flags & VLIB_BUFFER_IS_TRACED)) + { + if (o_b0) + { + o_b0->flags |= VLIB_BUFFER_IS_TRACED; + o_b0->trace_index = i_b0->trace_index; + esp_decrypt_trace_t *tr = + vlib_add_trace (vm, node, o_b0, sizeof (*tr)); + tr->crypto_alg = sa0->crypto_alg; + tr->integ_alg = sa0->integ_alg; + } + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, o_bi0, next0); + } + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + vlib_node_increment_counter (vm, esp_decrypt_node.index, + ESP_DECRYPT_ERROR_RX_PKTS, + from_frame->n_vectors); + +free_buffers_and_exit: + if (recycle) + vlib_buffer_free (vm, recycle, vec_len (recycle)); + vec_free (recycle); + return from_frame->n_vectors; +} + + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (esp_decrypt_node) = { + .function = esp_decrypt_node_fn, + .name = "esp-decrypt", + .vector_size = sizeof (u32), + .format_trace = format_esp_decrypt_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(esp_decrypt_error_strings), + .error_strings = esp_decrypt_error_strings, + + .n_next_nodes = ESP_DECRYPT_N_NEXT, + .next_nodes = { +#define _(s,n) [ESP_DECRYPT_NEXT_##s] = n, + foreach_esp_decrypt_next +#undef _ + }, +}; +/* *INDENT-ON* */ + +VLIB_NODE_FUNCTION_MULTIARCH (esp_decrypt_node, esp_decrypt_node_fn) +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/esp_encrypt.c b/src/vnet/ipsec/esp_encrypt.c new file mode 100644 index 00000000000..7b7f9b9c4c7 --- /dev/null +++ b/src/vnet/ipsec/esp_encrypt.c @@ -0,0 +1,425 @@ +/* + * esp_encrypt.c : IPSec ESP encrypt node + * + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include + +#include +#include + + +#define foreach_esp_encrypt_next \ +_(DROP, "error-drop") \ +_(IP4_LOOKUP, "ip4-lookup") \ +_(IP6_LOOKUP, "ip6-lookup") \ +_(INTERFACE_OUTPUT, "interface-output") + +#define _(v, s) ESP_ENCRYPT_NEXT_##v, +typedef enum +{ + foreach_esp_encrypt_next +#undef _ + ESP_ENCRYPT_N_NEXT, +} esp_encrypt_next_t; + +#define foreach_esp_encrypt_error \ + _(RX_PKTS, "ESP pkts received") \ + _(NO_BUFFER, "No buffer (packet dropped)") \ + _(DECRYPTION_FAILED, "ESP encryption failed") \ + _(SEQ_CYCLED, "sequence number cycled") + + +typedef enum +{ +#define _(sym,str) ESP_ENCRYPT_ERROR_##sym, + foreach_esp_encrypt_error +#undef _ + ESP_ENCRYPT_N_ERROR, +} esp_encrypt_error_t; + +static char *esp_encrypt_error_strings[] = { +#define _(sym,string) string, + foreach_esp_encrypt_error +#undef _ +}; + +vlib_node_registration_t esp_encrypt_node; + +typedef struct +{ + u32 spi; + u32 seq; + ipsec_crypto_alg_t crypto_alg; + ipsec_integ_alg_t integ_alg; +} esp_encrypt_trace_t; + +/* packet trace format function */ +static u8 * +format_esp_encrypt_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + esp_encrypt_trace_t *t = va_arg (*args, esp_encrypt_trace_t *); + + s = format (s, "esp: spi %u seq %u crypto %U integrity %U", + t->spi, t->seq, + format_ipsec_crypto_alg, t->crypto_alg, + format_ipsec_integ_alg, t->integ_alg); + return s; +} + +always_inline void +esp_encrypt_aes_cbc (ipsec_crypto_alg_t alg, + u8 * in, u8 * out, size_t in_len, u8 * key, u8 * iv) +{ + esp_main_t *em = &esp_main; + u32 cpu_index = os_get_cpu_number (); + EVP_CIPHER_CTX *ctx = &(em->per_thread_data[cpu_index].encrypt_ctx); + const EVP_CIPHER *cipher = NULL; + int out_len; + + ASSERT (alg < IPSEC_CRYPTO_N_ALG); + + if (PREDICT_FALSE (em->esp_crypto_algs[alg].type == IPSEC_CRYPTO_ALG_NONE)) + return; + + if (PREDICT_FALSE (alg != em->per_thread_data[cpu_index].last_encrypt_alg)) + { + cipher = em->esp_crypto_algs[alg].type; + em->per_thread_data[cpu_index].last_encrypt_alg = alg; + } + + EVP_EncryptInit_ex (ctx, cipher, NULL, key, iv); + + EVP_EncryptUpdate (ctx, out, &out_len, in, in_len); + EVP_EncryptFinal_ex (ctx, out + out_len, &out_len); +} + +static uword +esp_encrypt_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * from_frame) +{ + u32 n_left_from, *from, *to_next = 0, next_index; + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + ipsec_main_t *im = &ipsec_main; + u32 *recycle = 0; + u32 cpu_index = os_get_cpu_number (); + + ipsec_alloc_empty_buffers (vm, im); + + u32 *empty_buffers = im->empty_buffers[cpu_index]; + + if (PREDICT_FALSE (vec_len (empty_buffers) < n_left_from)) + { + vlib_node_increment_counter (vm, esp_encrypt_node.index, + ESP_ENCRYPT_ERROR_NO_BUFFER, n_left_from); + clib_warning ("no enough empty buffers. discarding frame"); + goto free_buffers_and_exit; + } + + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 i_bi0, o_bi0, next0; + vlib_buffer_t *i_b0, *o_b0 = 0; + u32 sa_index0; + ipsec_sa_t *sa0; + ip4_and_esp_header_t *ih0, *oh0 = 0; + ip6_and_esp_header_t *ih6_0, *oh6_0 = 0; + uword last_empty_buffer; + esp_header_t *o_esp0; + esp_footer_t *f0; + u8 is_ipv6; + u8 ip_hdr_size; + u8 next_hdr_type; + u32 ip_proto = 0; + u8 transport_mode = 0; + + i_bi0 = from[0]; + from += 1; + n_left_from -= 1; + n_left_to_next -= 1; + + next0 = ESP_ENCRYPT_NEXT_DROP; + + i_b0 = vlib_get_buffer (vm, i_bi0); + sa_index0 = vnet_buffer (i_b0)->ipsec.sad_index; + sa0 = pool_elt_at_index (im->sad, sa_index0); + + if (PREDICT_FALSE (esp_seq_advance (sa0))) + { + clib_warning ("sequence number counter has cycled SPI %u", + sa0->spi); + vlib_node_increment_counter (vm, esp_encrypt_node.index, + ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1); + //TODO: rekey SA + o_bi0 = i_bi0; + to_next[0] = o_bi0; + to_next += 1; + goto trace; + } + + /* grab free buffer */ + last_empty_buffer = vec_len (empty_buffers) - 1; + o_bi0 = empty_buffers[last_empty_buffer]; + o_b0 = vlib_get_buffer (vm, o_bi0); + o_b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID; + o_b0->current_data = sizeof (ethernet_header_t); + ih0 = vlib_buffer_get_current (i_b0); + vlib_prefetch_buffer_with_index (vm, + empty_buffers[last_empty_buffer - + 1], STORE); + _vec_len (empty_buffers) = last_empty_buffer; + to_next[0] = o_bi0; + to_next += 1; + + /* add old buffer to the recycle list */ + vec_add1 (recycle, i_bi0); + + /* is ipv6 */ + if (PREDICT_FALSE + ((ih0->ip4.ip_version_and_header_length & 0xF0) == 0x60)) + { + is_ipv6 = 1; + ih6_0 = vlib_buffer_get_current (i_b0); + ip_hdr_size = sizeof (ip6_header_t); + next_hdr_type = IP_PROTOCOL_IPV6; + oh6_0 = vlib_buffer_get_current (o_b0); + o_esp0 = vlib_buffer_get_current (o_b0) + sizeof (ip6_header_t); + + oh6_0->ip6.ip_version_traffic_class_and_flow_label = + ih6_0->ip6.ip_version_traffic_class_and_flow_label; + oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP; + oh6_0->ip6.hop_limit = 254; + oh6_0->ip6.src_address.as_u64[0] = + ih6_0->ip6.src_address.as_u64[0]; + oh6_0->ip6.src_address.as_u64[1] = + ih6_0->ip6.src_address.as_u64[1]; + oh6_0->ip6.dst_address.as_u64[0] = + ih6_0->ip6.dst_address.as_u64[0]; + oh6_0->ip6.dst_address.as_u64[1] = + ih6_0->ip6.dst_address.as_u64[1]; + oh6_0->esp.spi = clib_net_to_host_u32 (sa0->spi); + oh6_0->esp.seq = clib_net_to_host_u32 (sa0->seq); + ip_proto = ih6_0->ip6.protocol; + + next0 = ESP_ENCRYPT_NEXT_IP6_LOOKUP; + } + else + { + is_ipv6 = 0; + ip_hdr_size = sizeof (ip4_header_t); + next_hdr_type = IP_PROTOCOL_IP_IN_IP; + oh0 = vlib_buffer_get_current (o_b0); + o_esp0 = vlib_buffer_get_current (o_b0) + sizeof (ip4_header_t); + + oh0->ip4.ip_version_and_header_length = 0x45; + oh0->ip4.tos = ih0->ip4.tos; + oh0->ip4.fragment_id = 0; + oh0->ip4.flags_and_fragment_offset = 0; + oh0->ip4.ttl = 254; + oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP; + oh0->ip4.src_address.as_u32 = ih0->ip4.src_address.as_u32; + oh0->ip4.dst_address.as_u32 = ih0->ip4.dst_address.as_u32; + oh0->esp.spi = clib_net_to_host_u32 (sa0->spi); + oh0->esp.seq = clib_net_to_host_u32 (sa0->seq); + ip_proto = ih0->ip4.protocol; + + next0 = ESP_ENCRYPT_NEXT_IP4_LOOKUP; + } + + if (PREDICT_TRUE + (!is_ipv6 && sa0->is_tunnel && !sa0->is_tunnel_ip6)) + { + oh0->ip4.src_address.as_u32 = sa0->tunnel_src_addr.ip4.as_u32; + oh0->ip4.dst_address.as_u32 = sa0->tunnel_dst_addr.ip4.as_u32; + + vnet_buffer (o_b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + } + else if (is_ipv6 && sa0->is_tunnel && sa0->is_tunnel_ip6) + { + oh6_0->ip6.src_address.as_u64[0] = + sa0->tunnel_src_addr.ip6.as_u64[0]; + oh6_0->ip6.src_address.as_u64[1] = + sa0->tunnel_src_addr.ip6.as_u64[1]; + oh6_0->ip6.dst_address.as_u64[0] = + sa0->tunnel_dst_addr.ip6.as_u64[0]; + oh6_0->ip6.dst_address.as_u64[1] = + sa0->tunnel_dst_addr.ip6.as_u64[1]; + + vnet_buffer (o_b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; + } + else + { + next_hdr_type = ip_proto; + if (vnet_buffer (i_b0)->sw_if_index[VLIB_TX] != ~0) + { + transport_mode = 1; + ethernet_header_t *ieh0, *oeh0; + ieh0 = + (ethernet_header_t *) ((u8 *) + vlib_buffer_get_current (i_b0) - + sizeof (ethernet_header_t)); + oeh0 = (ethernet_header_t *) o_b0->data; + clib_memcpy (oeh0, ieh0, sizeof (ethernet_header_t)); + next0 = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT; + vnet_buffer (o_b0)->sw_if_index[VLIB_TX] = + vnet_buffer (i_b0)->sw_if_index[VLIB_TX]; + } + vlib_buffer_advance (i_b0, ip_hdr_size); + } + + ASSERT (sa0->crypto_alg < IPSEC_CRYPTO_N_ALG); + + if (PREDICT_TRUE (sa0->crypto_alg != IPSEC_CRYPTO_ALG_NONE)) + { + + const int BLOCK_SIZE = 16; + const int IV_SIZE = 16; + int blocks = 1 + (i_b0->current_length + 1) / BLOCK_SIZE; + + /* pad packet in input buffer */ + u8 pad_bytes = BLOCK_SIZE * blocks - 2 - i_b0->current_length; + u8 i; + u8 *padding = + vlib_buffer_get_current (i_b0) + i_b0->current_length; + i_b0->current_length = BLOCK_SIZE * blocks; + for (i = 0; i < pad_bytes; ++i) + { + padding[i] = i + 1; + } + f0 = vlib_buffer_get_current (i_b0) + i_b0->current_length - 2; + f0->pad_length = pad_bytes; + f0->next_header = next_hdr_type; + + o_b0->current_length = ip_hdr_size + sizeof (esp_header_t) + + BLOCK_SIZE * blocks + IV_SIZE; + + vnet_buffer (o_b0)->sw_if_index[VLIB_RX] = + vnet_buffer (i_b0)->sw_if_index[VLIB_RX]; + + u8 iv[16]; + RAND_bytes (iv, sizeof (iv)); + + clib_memcpy ((u8 *) vlib_buffer_get_current (o_b0) + + ip_hdr_size + sizeof (esp_header_t), iv, 16); + + esp_encrypt_aes_cbc (sa0->crypto_alg, + (u8 *) vlib_buffer_get_current (i_b0), + (u8 *) vlib_buffer_get_current (o_b0) + + ip_hdr_size + sizeof (esp_header_t) + + IV_SIZE, BLOCK_SIZE * blocks, + sa0->crypto_key, iv); + } + + o_b0->current_length += hmac_calc (sa0->integ_alg, sa0->integ_key, + sa0->integ_key_len, + (u8 *) o_esp0, + o_b0->current_length - + ip_hdr_size, + vlib_buffer_get_current (o_b0) + + o_b0->current_length, + sa0->use_esn, sa0->seq_hi); + + + if (PREDICT_FALSE (is_ipv6)) + { + oh6_0->ip6.payload_length = + clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, o_b0) - + sizeof (ip6_header_t)); + } + else + { + oh0->ip4.length = + clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, o_b0)); + oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4); + } + + if (transport_mode) + vlib_buffer_reset (o_b0); + + trace: + if (PREDICT_FALSE (i_b0->flags & VLIB_BUFFER_IS_TRACED)) + { + if (o_b0) + { + o_b0->flags |= VLIB_BUFFER_IS_TRACED; + o_b0->trace_index = i_b0->trace_index; + esp_encrypt_trace_t *tr = + vlib_add_trace (vm, node, o_b0, sizeof (*tr)); + tr->spi = sa0->spi; + tr->seq = sa0->seq - 1; + tr->crypto_alg = sa0->crypto_alg; + tr->integ_alg = sa0->integ_alg; + } + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, + to_next, n_left_to_next, o_bi0, + next0); + } + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + vlib_node_increment_counter (vm, esp_encrypt_node.index, + ESP_ENCRYPT_ERROR_RX_PKTS, + from_frame->n_vectors); + +free_buffers_and_exit: + if (recycle) + vlib_buffer_free (vm, recycle, vec_len (recycle)); + vec_free (recycle); + return from_frame->n_vectors; +} + + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (esp_encrypt_node) = { + .function = esp_encrypt_node_fn, + .name = "esp-encrypt", + .vector_size = sizeof (u32), + .format_trace = format_esp_encrypt_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(esp_encrypt_error_strings), + .error_strings = esp_encrypt_error_strings, + + .n_next_nodes = ESP_ENCRYPT_N_NEXT, + .next_nodes = { +#define _(s,n) [ESP_ENCRYPT_NEXT_##s] = n, + foreach_esp_encrypt_next +#undef _ + }, +}; +/* *INDENT-ON* */ + +VLIB_NODE_FUNCTION_MULTIARCH (esp_encrypt_node, esp_encrypt_node_fn) +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ikev2.c b/src/vnet/ipsec/ikev2.c new file mode 100644 index 00000000000..5a6c3674477 --- /dev/null +++ b/src/vnet/ipsec/ikev2.c @@ -0,0 +1,2186 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include +#include +#include +#include +#include +#include + +static int ikev2_delete_tunnel_interface (vnet_main_t * vnm, + ikev2_sa_t * sa, + ikev2_child_sa_t * child); + +#define ikev2_set_state(sa, v) do { \ + (sa)->state = v; \ + clib_warning("sa state changed to " #v); \ + } while(0); + +typedef struct +{ + u32 next_index; + u32 sw_if_index; +} ikev2_trace_t; + +static u8 * +format_ikev2_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + ikev2_trace_t *t = va_arg (*args, ikev2_trace_t *); + + s = format (s, "ikev2: sw_if_index %d, next index %d", + t->sw_if_index, t->next_index); + return s; +} + +static vlib_node_registration_t ikev2_node; + +#define foreach_ikev2_error \ +_(PROCESSED, "IKEv2 packets processed") \ +_(IKE_SA_INIT_RETRANSMIT, "IKE_SA_INIT retransmit ") \ +_(IKE_SA_INIT_IGNORE, "IKE_SA_INIT ignore (IKE SA already auth)") \ +_(IKE_REQ_RETRANSMIT, "IKE request retransmit") \ +_(IKE_REQ_IGNORE, "IKE request ignore (old msgid)") \ +_(NOT_IKEV2, "Non IKEv2 packets received") + +typedef enum +{ +#define _(sym,str) IKEV2_ERROR_##sym, + foreach_ikev2_error +#undef _ + IKEV2_N_ERROR, +} ikev2_error_t; + +static char *ikev2_error_strings[] = { +#define _(sym,string) string, + foreach_ikev2_error +#undef _ +}; + +typedef enum +{ + IKEV2_NEXT_IP4_LOOKUP, + IKEV2_NEXT_ERROR_DROP, + IKEV2_N_NEXT, +} ikev2_next_t; + +static ikev2_sa_transform_t * +ikev2_find_transform_data (ikev2_sa_transform_t * t) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_sa_transform_t *td; + + vec_foreach (td, km->supported_transforms) + { + if (td->type != t->type) + continue; + + if (td->transform_id != t->transform_id) + continue; + + if (td->type == IKEV2_TRANSFORM_TYPE_ENCR) + { + if (vec_len (t->attrs) != 4 || t->attrs[0] != 0x80 + || t->attrs[1] != 14) + continue; + + if (((t->attrs[2] << 8 | t->attrs[3]) / 8) != td->key_len) + continue; + } + return td; + } + return 0; +} + +static ikev2_sa_proposal_t * +ikev2_select_proposal (ikev2_sa_proposal_t * proposals, + ikev2_protocol_id_t prot_id) +{ + ikev2_sa_proposal_t *rv = 0; + ikev2_sa_proposal_t *proposal; + ikev2_sa_transform_t *transform, *new_t; + u8 mandatory_bitmap, optional_bitmap; + + if (prot_id == IKEV2_PROTOCOL_IKE) + { + mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_ENCR) | + (1 << IKEV2_TRANSFORM_TYPE_PRF) | + (1 << IKEV2_TRANSFORM_TYPE_INTEG) | (1 << IKEV2_TRANSFORM_TYPE_DH); + optional_bitmap = mandatory_bitmap; + } + else if (prot_id == IKEV2_PROTOCOL_ESP) + { + mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_ENCR) | + (1 << IKEV2_TRANSFORM_TYPE_ESN); + optional_bitmap = mandatory_bitmap | + (1 << IKEV2_TRANSFORM_TYPE_INTEG) | (1 << IKEV2_TRANSFORM_TYPE_DH); + } + else if (prot_id == IKEV2_PROTOCOL_AH) + { + mandatory_bitmap = (1 << IKEV2_TRANSFORM_TYPE_INTEG) | + (1 << IKEV2_TRANSFORM_TYPE_ESN); + optional_bitmap = mandatory_bitmap | (1 << IKEV2_TRANSFORM_TYPE_DH); + } + else + return 0; + + vec_add2 (rv, proposal, 1); + + vec_foreach (proposal, proposals) + { + u8 bitmap = 0; + if (proposal->protocol_id != prot_id) + continue; + + vec_foreach (transform, proposal->transforms) + { + if ((1 << transform->type) & bitmap) + continue; + + if (ikev2_find_transform_data (transform)) + { + bitmap |= 1 << transform->type; + vec_add2 (rv->transforms, new_t, 1); + clib_memcpy (new_t, transform, sizeof (*new_t)); + new_t->attrs = vec_dup (transform->attrs); + } + } + + clib_warning ("bitmap is %x mandatory is %x optional is %x", + bitmap, mandatory_bitmap, optional_bitmap); + + if ((bitmap & mandatory_bitmap) == mandatory_bitmap && + (bitmap & ~optional_bitmap) == 0) + { + rv->proposal_num = proposal->proposal_num; + rv->protocol_id = proposal->protocol_id; + RAND_bytes ((u8 *) & rv->spi, sizeof (rv->spi)); + goto done; + } + else + { + vec_free (rv->transforms); + } + } + + vec_free (rv); +done: + return rv; +} + +ikev2_sa_transform_t * +ikev2_sa_get_td_for_type (ikev2_sa_proposal_t * p, + ikev2_transform_type_t type) +{ + ikev2_sa_transform_t *t; + + if (!p) + return 0; + + vec_foreach (t, p->transforms) + { + if (t->type == type) + return ikev2_find_transform_data (t); + } + return 0; +} + +ikev2_child_sa_t * +ikev2_sa_get_child (ikev2_sa_t * sa, u32 spi, ikev2_protocol_id_t prot_id) +{ + ikev2_child_sa_t *c; + vec_foreach (c, sa->childs) + { + if (c->i_proposals[0].spi == spi + && c->i_proposals[0].protocol_id == prot_id) + return c; + } + + return 0; +} + +void +ikev2_sa_free_proposal_vector (ikev2_sa_proposal_t ** v) +{ + ikev2_sa_proposal_t *p; + ikev2_sa_transform_t *t; + + if (!*v) + return; + + vec_foreach (p, *v) + { + vec_foreach (t, p->transforms) + { + vec_free (t->attrs); + } + vec_free (p->transforms); + } + vec_free (*v); +}; + +static void +ikev2_sa_free_all_child_sa (ikev2_child_sa_t ** childs) +{ + ikev2_child_sa_t *c; + vec_foreach (c, *childs) + { + ikev2_sa_free_proposal_vector (&c->r_proposals); + ikev2_sa_free_proposal_vector (&c->i_proposals); + vec_free (c->sk_ai); + vec_free (c->sk_ar); + vec_free (c->sk_ei); + vec_free (c->sk_er); + } + + vec_free (*childs); +} + +static void +ikev2_sa_del_child_sa (ikev2_sa_t * sa, ikev2_child_sa_t * child) +{ + ikev2_sa_free_proposal_vector (&child->r_proposals); + ikev2_sa_free_proposal_vector (&child->i_proposals); + vec_free (child->sk_ai); + vec_free (child->sk_ar); + vec_free (child->sk_ei); + vec_free (child->sk_er); + + vec_del1 (sa->childs, child - sa->childs); +} + +static void +ikev2_sa_free_all_vec (ikev2_sa_t * sa) +{ + vec_free (sa->i_nonce); + vec_free (sa->i_dh_data); + vec_free (sa->dh_shared_key); + + ikev2_sa_free_proposal_vector (&sa->r_proposals); + ikev2_sa_free_proposal_vector (&sa->i_proposals); + + vec_free (sa->sk_d); + vec_free (sa->sk_ai); + vec_free (sa->sk_ar); + vec_free (sa->sk_ei); + vec_free (sa->sk_er); + vec_free (sa->sk_pi); + vec_free (sa->sk_pr); + + vec_free (sa->i_id.data); + vec_free (sa->i_auth.data); + vec_free (sa->r_id.data); + vec_free (sa->r_auth.data); + if (sa->r_auth.key) + EVP_PKEY_free (sa->r_auth.key); + + vec_free (sa->del); + + ikev2_sa_free_all_child_sa (&sa->childs); +} + +static void +ikev2_delete_sa (ikev2_sa_t * sa) +{ + ikev2_main_t *km = &ikev2_main; + u32 cpu_index = os_get_cpu_number (); + uword *p; + + ikev2_sa_free_all_vec (sa); + + p = hash_get (km->per_thread_data[cpu_index].sa_by_rspi, sa->rspi); + if (p) + { + hash_unset (km->per_thread_data[cpu_index].sa_by_rspi, sa->rspi); + pool_put (km->per_thread_data[cpu_index].sas, sa); + } +} + +static void +ikev2_generate_sa_init_data (ikev2_sa_t * sa) +{ + ikev2_sa_transform_t *t = 0, *t2; + ikev2_main_t *km = &ikev2_main; + + if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE) + { + return; + } + + /* check if received DH group is on our list of supported groups */ + vec_foreach (t2, km->supported_transforms) + { + if (t2->type == IKEV2_TRANSFORM_TYPE_DH && sa->dh_group == t2->dh_type) + { + t = t2; + break; + } + } + + if (!t) + { + clib_warning ("unknown dh data group %u (data len %u)", sa->dh_group, + vec_len (sa->i_dh_data)); + sa->dh_group = IKEV2_TRANSFORM_DH_TYPE_NONE; + return; + } + + /* generate rspi */ + RAND_bytes ((u8 *) & sa->rspi, 8); + + /* generate nonce */ + sa->r_nonce = vec_new (u8, IKEV2_NONCE_SIZE); + RAND_bytes ((u8 *) sa->r_nonce, IKEV2_NONCE_SIZE); + + /* generate dh keys */ + ikev2_generate_dh (sa, t); +} + +static void +ikev2_calc_keys (ikev2_sa_t * sa) +{ + u8 *tmp; + /* calculate SKEYSEED = prf(Ni | Nr, g^ir) */ + u8 *skeyseed = 0; + u8 *s = 0; + ikev2_sa_transform_t *tr_encr, *tr_prf, *tr_integ; + tr_encr = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + tr_prf = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF); + tr_integ = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + + vec_append (s, sa->i_nonce); + vec_append (s, sa->r_nonce); + skeyseed = ikev2_calc_prf (tr_prf, s, sa->dh_shared_key); + + /* Calculate S = Ni | Nr | SPIi | SPIr */ + u64 *spi; + vec_add2 (s, tmp, 2 * sizeof (*spi)); + spi = (u64 *) tmp; + spi[0] = clib_host_to_net_u64 (sa->ispi); + spi[1] = clib_host_to_net_u64 (sa->rspi); + + /* calculate PRFplus */ + u8 *keymat; + int len = tr_prf->key_trunc + /* SK_d */ + tr_integ->key_len * 2 + /* SK_ai, SK_ar */ + tr_encr->key_len * 2 + /* SK_ei, SK_er */ + tr_prf->key_len * 2; /* SK_pi, SK_pr */ + + keymat = ikev2_calc_prfplus (tr_prf, skeyseed, s, len); + vec_free (skeyseed); + vec_free (s); + + int pos = 0; + + /* SK_d */ + sa->sk_d = vec_new (u8, tr_prf->key_trunc); + clib_memcpy (sa->sk_d, keymat + pos, tr_prf->key_trunc); + pos += tr_prf->key_trunc; + + /* SK_ai */ + sa->sk_ai = vec_new (u8, tr_integ->key_len); + clib_memcpy (sa->sk_ai, keymat + pos, tr_integ->key_len); + pos += tr_integ->key_len; + + /* SK_ar */ + sa->sk_ar = vec_new (u8, tr_integ->key_len); + clib_memcpy (sa->sk_ar, keymat + pos, tr_integ->key_len); + pos += tr_integ->key_len; + + /* SK_ei */ + sa->sk_ei = vec_new (u8, tr_encr->key_len); + clib_memcpy (sa->sk_ei, keymat + pos, tr_encr->key_len); + pos += tr_encr->key_len; + + /* SK_er */ + sa->sk_er = vec_new (u8, tr_encr->key_len); + clib_memcpy (sa->sk_er, keymat + pos, tr_encr->key_len); + pos += tr_encr->key_len; + + /* SK_pi */ + sa->sk_pi = vec_new (u8, tr_prf->key_len); + clib_memcpy (sa->sk_pi, keymat + pos, tr_prf->key_len); + pos += tr_prf->key_len; + + /* SK_pr */ + sa->sk_pr = vec_new (u8, tr_prf->key_len); + clib_memcpy (sa->sk_pr, keymat + pos, tr_prf->key_len); + pos += tr_prf->key_len; + + vec_free (keymat); +} + +static void +ikev2_calc_child_keys (ikev2_sa_t * sa, ikev2_child_sa_t * child) +{ + u8 *s = 0; + ikev2_sa_transform_t *tr_prf, *ctr_encr, *ctr_integ; + tr_prf = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF); + ctr_encr = + ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + ctr_integ = + ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + + vec_append (s, sa->i_nonce); + vec_append (s, sa->r_nonce); + /* calculate PRFplus */ + u8 *keymat; + int len = ctr_encr->key_len * 2 + ctr_integ->key_len * 2; + + keymat = ikev2_calc_prfplus (tr_prf, sa->sk_d, s, len); + + int pos = 0; + + /* SK_ei */ + child->sk_ei = vec_new (u8, ctr_encr->key_len); + clib_memcpy (child->sk_ei, keymat + pos, ctr_encr->key_len); + pos += ctr_encr->key_len; + + /* SK_ai */ + child->sk_ai = vec_new (u8, ctr_integ->key_len); + clib_memcpy (child->sk_ai, keymat + pos, ctr_integ->key_len); + pos += ctr_integ->key_len; + + /* SK_er */ + child->sk_er = vec_new (u8, ctr_encr->key_len); + clib_memcpy (child->sk_er, keymat + pos, ctr_encr->key_len); + pos += ctr_encr->key_len; + + /* SK_ar */ + child->sk_ar = vec_new (u8, ctr_integ->key_len); + clib_memcpy (child->sk_ar, keymat + pos, ctr_integ->key_len); + pos += ctr_integ->key_len; + + ASSERT (pos == len); + + vec_free (keymat); +} + +static void +ikev2_process_sa_init_req (vlib_main_t * vm, ikev2_sa_t * sa, + ike_header_t * ike) +{ + int p = 0; + u32 len = clib_net_to_host_u32 (ike->length); + u8 payload = ike->nextpayload; + + clib_warning ("ispi %lx rspi %lx nextpayload %x version %x " + "exchange %x flags %x msgid %x length %u", + clib_net_to_host_u64 (ike->ispi), + clib_net_to_host_u64 (ike->rspi), + payload, ike->version, + ike->exchange, ike->flags, + clib_net_to_host_u32 (ike->msgid), len); + + sa->ispi = clib_net_to_host_u64 (ike->ispi); + + /* store whole IKE payload - needed for PSK auth */ + vec_free (sa->last_sa_init_req_packet_data); + vec_add (sa->last_sa_init_req_packet_data, ike, len); + + while (p < len && payload != IKEV2_PAYLOAD_NONE) + { + ike_payload_header_t *ikep = (ike_payload_header_t *) & ike->payload[p]; + u32 plen = clib_net_to_host_u16 (ikep->length); + + if (plen < sizeof (ike_payload_header_t)) + return; + + if (payload == IKEV2_PAYLOAD_SA) + { + ikev2_sa_free_proposal_vector (&sa->i_proposals); + sa->i_proposals = ikev2_parse_sa_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_KE) + { + ike_ke_payload_header_t *ke = (ike_ke_payload_header_t *) ikep; + sa->dh_group = clib_net_to_host_u16 (ke->dh_group); + vec_free (sa->i_dh_data); + vec_add (sa->i_dh_data, ke->payload, plen - sizeof (*ke)); + } + else if (payload == IKEV2_PAYLOAD_NONCE) + { + vec_free (sa->i_nonce); + vec_add (sa->i_nonce, ikep->payload, plen - sizeof (*ikep)); + } + else if (payload == IKEV2_PAYLOAD_NOTIFY) + { + ikev2_notify_t *n = ikev2_parse_notify_payload (ikep); + vec_free (n); + } + else if (payload == IKEV2_PAYLOAD_VENDOR) + { + ikev2_parse_vendor_payload (ikep); + } + else + { + clib_warning ("unknown payload %u flags %x length %u", payload, + ikep->flags, plen); + if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL) + { + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + sa->unsupported_cp = payload; + return; + } + } + + payload = ikep->nextpayload; + p += plen; + } + + ikev2_set_state (sa, IKEV2_STATE_SA_INIT); +} + +static u8 * +ikev2_decrypt_sk_payload (ikev2_sa_t * sa, ike_header_t * ike, u8 * payload) +{ + int p = 0; + u8 last_payload = 0; + u8 *hmac = 0; + u32 len = clib_net_to_host_u32 (ike->length); + ike_payload_header_t *ikep = 0; + u32 plen = 0; + ikev2_sa_transform_t *tr_integ; + tr_integ = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + + while (p < len && + *payload != IKEV2_PAYLOAD_NONE && last_payload != IKEV2_PAYLOAD_SK) + { + ikep = (ike_payload_header_t *) & ike->payload[p]; + plen = clib_net_to_host_u16 (ikep->length); + + if (plen < sizeof (*ikep)) + return 0; + + if (*payload == IKEV2_PAYLOAD_SK) + { + clib_warning ("received IKEv2 payload SK, len %u", plen - 4); + last_payload = *payload; + } + else + { + clib_warning ("unknown payload %u flags %x length %u", payload, + ikep->flags, plen); + if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL) + { + sa->unsupported_cp = *payload; + return 0; + } + } + + *payload = ikep->nextpayload; + p += plen; + } + + if (last_payload != IKEV2_PAYLOAD_SK) + { + clib_warning ("Last payload must be SK"); + return 0; + } + + hmac = ikev2_calc_integr (tr_integ, sa->sk_ai, (u8 *) ike, + len - tr_integ->key_trunc); + + plen = plen - sizeof (*ikep) - tr_integ->key_trunc; + + if (memcmp (hmac, &ikep->payload[plen], tr_integ->key_trunc)) + { + clib_warning ("message integrity check failed"); + vec_free (hmac); + return 0; + } + vec_free (hmac); + + return ikev2_decrypt_data (sa, ikep->payload, plen); +} + +static void +ikev2_initial_contact_cleanup (ikev2_sa_t * sa) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_sa_t *tmp; + u32 i, *delete = 0; + ikev2_child_sa_t *c; + u32 cpu_index = os_get_cpu_number (); + + if (!sa->initial_contact) + return; + + /* find old IKE SAs with the same authenticated identity */ + /* *INDENT-OFF* */ + pool_foreach (tmp, km->per_thread_data[cpu_index].sas, ({ + if (tmp->i_id.type != sa->i_id.type || + vec_len(tmp->i_id.data) != vec_len(sa->i_id.data) || + memcmp(sa->i_id.data, tmp->i_id.data, vec_len(sa->i_id.data))) + continue; + + if (sa->rspi != tmp->rspi) + vec_add1(delete, tmp - km->per_thread_data[cpu_index].sas); + })); + /* *INDENT-ON* */ + + for (i = 0; i < vec_len (delete); i++) + { + tmp = pool_elt_at_index (km->per_thread_data[cpu_index].sas, delete[i]); + vec_foreach (c, tmp->childs) + ikev2_delete_tunnel_interface (km->vnet_main, tmp, c); + ikev2_delete_sa (tmp); + } + + vec_free (delete); + sa->initial_contact = 0; +} + +static void +ikev2_process_auth_req (vlib_main_t * vm, ikev2_sa_t * sa, ike_header_t * ike) +{ + ikev2_child_sa_t *first_child_sa; + int p = 0; + u32 len = clib_net_to_host_u32 (ike->length); + u8 payload = ike->nextpayload; + u8 *plaintext = 0; + + ike_payload_header_t *ikep; + u32 plen; + + clib_warning ("ispi %lx rspi %lx nextpayload %x version %x " + "exchange %x flags %x msgid %x length %u", + clib_net_to_host_u64 (ike->ispi), + clib_net_to_host_u64 (ike->rspi), + payload, ike->version, + ike->exchange, ike->flags, + clib_net_to_host_u32 (ike->msgid), len); + + ikev2_calc_keys (sa); + + plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload); + + if (!plaintext) + { + if (sa->unsupported_cp) + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + goto cleanup_and_exit; + } + + /* create 1st child SA */ + ikev2_sa_free_all_child_sa (&sa->childs); + vec_add2 (sa->childs, first_child_sa, 1); + + + /* process encrypted payload */ + p = 0; + while (p < vec_len (plaintext) && payload != IKEV2_PAYLOAD_NONE) + { + ikep = (ike_payload_header_t *) & plaintext[p]; + plen = clib_net_to_host_u16 (ikep->length); + + if (plen < sizeof (ike_payload_header_t)) + goto cleanup_and_exit; + + if (payload == IKEV2_PAYLOAD_SA) /* 33 */ + { + clib_warning ("received payload SA, len %u", plen - sizeof (*ikep)); + ikev2_sa_free_proposal_vector (&first_child_sa->i_proposals); + first_child_sa->i_proposals = ikev2_parse_sa_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_IDI) /* 35 */ + { + ike_id_payload_header_t *id = (ike_id_payload_header_t *) ikep; + + sa->i_id.type = id->id_type; + vec_free (sa->i_id.data); + vec_add (sa->i_id.data, id->payload, plen - sizeof (*id)); + + clib_warning ("received payload IDi, len %u id_type %u", + plen - sizeof (*id), id->id_type); + } + else if (payload == IKEV2_PAYLOAD_AUTH) /* 39 */ + { + ike_auth_payload_header_t *a = (ike_auth_payload_header_t *) ikep; + + sa->i_auth.method = a->auth_method; + vec_free (sa->i_auth.data); + vec_add (sa->i_auth.data, a->payload, plen - sizeof (*a)); + + clib_warning ("received payload AUTH, len %u auth_type %u", + plen - sizeof (*a), a->auth_method); + } + else if (payload == IKEV2_PAYLOAD_NOTIFY) /* 41 */ + { + ikev2_notify_t *n = ikev2_parse_notify_payload (ikep); + if (n->msg_type == IKEV2_NOTIFY_MSG_INITIAL_CONTACT) + { + sa->initial_contact = 1; + } + vec_free (n); + } + else if (payload == IKEV2_PAYLOAD_VENDOR) /* 43 */ + { + ikev2_parse_vendor_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_TSI) /* 44 */ + { + clib_warning ("received payload TSi, len %u", + plen - sizeof (*ikep)); + + vec_free (first_child_sa->tsi); + first_child_sa->tsi = ikev2_parse_ts_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_TSR) /* 45 */ + { + clib_warning ("received payload TSr, len %u", + plen - sizeof (*ikep)); + + vec_free (first_child_sa->tsr); + first_child_sa->tsr = ikev2_parse_ts_payload (ikep); + } + else + { + clib_warning ("unknown payload %u flags %x length %u data %u", + payload, ikep->flags, plen - 4, + format_hex_bytes, ikep->payload, plen - 4); + + if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL) + { + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + sa->unsupported_cp = payload; + return; + } + } + + payload = ikep->nextpayload; + p += plen; + } + +cleanup_and_exit: + vec_free (plaintext); +} + +static void +ikev2_process_informational_req (vlib_main_t * vm, ikev2_sa_t * sa, + ike_header_t * ike) +{ + int p = 0; + u32 len = clib_net_to_host_u32 (ike->length); + u8 payload = ike->nextpayload; + u8 *plaintext = 0; + + ike_payload_header_t *ikep; + u32 plen; + + clib_warning ("ispi %lx rspi %lx nextpayload %x version %x " + "exchange %x flags %x msgid %x length %u", + clib_net_to_host_u64 (ike->ispi), + clib_net_to_host_u64 (ike->rspi), + payload, ike->version, + ike->exchange, ike->flags, + clib_net_to_host_u32 (ike->msgid), len); + + plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload); + + if (!plaintext) + goto cleanup_and_exit; + + /* process encrypted payload */ + p = 0; + while (p < vec_len (plaintext) && payload != IKEV2_PAYLOAD_NONE) + { + ikep = (ike_payload_header_t *) & plaintext[p]; + plen = clib_net_to_host_u16 (ikep->length); + + if (plen < sizeof (ike_payload_header_t)) + goto cleanup_and_exit; + + if (payload == IKEV2_PAYLOAD_NOTIFY) /* 41 */ + { + ikev2_notify_t *n = ikev2_parse_notify_payload (ikep); + if (n->msg_type == IKEV2_NOTIFY_MSG_AUTHENTICATION_FAILED) + ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED); + vec_free (n); + } + else if (payload == IKEV2_PAYLOAD_DELETE) /* 42 */ + { + sa->del = ikev2_parse_delete_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_VENDOR) /* 43 */ + { + ikev2_parse_vendor_payload (ikep); + } + else + { + clib_warning ("unknown payload %u flags %x length %u data %u", + payload, ikep->flags, plen - 4, + format_hex_bytes, ikep->payload, plen - 4); + + if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL) + { + sa->unsupported_cp = payload; + return; + } + } + + payload = ikep->nextpayload; + p += plen; + } + +cleanup_and_exit: + vec_free (plaintext); +} + +static void +ikev2_process_create_child_sa_req (vlib_main_t * vm, ikev2_sa_t * sa, + ike_header_t * ike) +{ + int p = 0; + u32 len = clib_net_to_host_u32 (ike->length); + u8 payload = ike->nextpayload; + u8 *plaintext = 0; + u8 rekeying = 0; + u8 i_nonce[IKEV2_NONCE_SIZE]; + + ike_payload_header_t *ikep; + u32 plen; + ikev2_notify_t *n = 0; + ikev2_ts_t *tsi = 0; + ikev2_ts_t *tsr = 0; + ikev2_sa_proposal_t *proposal = 0; + ikev2_child_sa_t *child_sa; + + clib_warning ("ispi %lx rspi %lx nextpayload %x version %x " + "exchange %x flags %x msgid %x length %u", + clib_net_to_host_u64 (ike->ispi), + clib_net_to_host_u64 (ike->rspi), + payload, ike->version, + ike->exchange, ike->flags, + clib_net_to_host_u32 (ike->msgid), len); + + plaintext = ikev2_decrypt_sk_payload (sa, ike, &payload); + + if (!plaintext) + goto cleanup_and_exit; + + /* process encrypted payload */ + p = 0; + while (p < vec_len (plaintext) && payload != IKEV2_PAYLOAD_NONE) + { + ikep = (ike_payload_header_t *) & plaintext[p]; + plen = clib_net_to_host_u16 (ikep->length); + + if (plen < sizeof (ike_payload_header_t)) + goto cleanup_and_exit; + + else if (payload == IKEV2_PAYLOAD_SA) + { + proposal = ikev2_parse_sa_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_NOTIFY) + { + n = ikev2_parse_notify_payload (ikep); + if (n->msg_type == IKEV2_NOTIFY_MSG_REKEY_SA) + { + rekeying = 1; + } + } + else if (payload == IKEV2_PAYLOAD_DELETE) + { + sa->del = ikev2_parse_delete_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_VENDOR) + { + ikev2_parse_vendor_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_NONCE) + { + clib_memcpy (i_nonce, ikep->payload, plen - sizeof (*ikep)); + } + else if (payload == IKEV2_PAYLOAD_TSI) + { + tsi = ikev2_parse_ts_payload (ikep); + } + else if (payload == IKEV2_PAYLOAD_TSR) + { + tsr = ikev2_parse_ts_payload (ikep); + } + else + { + clib_warning ("unknown payload %u flags %x length %u data %u", + payload, ikep->flags, plen - 4, + format_hex_bytes, ikep->payload, plen - 4); + + if (ikep->flags & IKEV2_PAYLOAD_FLAG_CRITICAL) + { + sa->unsupported_cp = payload; + return; + } + } + + payload = ikep->nextpayload; + p += plen; + } + + if (rekeying) + { + ikev2_rekey_t *rekey; + child_sa = ikev2_sa_get_child (sa, n->spi, n->protocol_id); + if (!child_sa) + { + clib_warning ("child SA spi %lx not found", n->spi); + goto cleanup_and_exit; + } + vec_add2 (sa->rekey, rekey, 1); + rekey->protocol_id = n->protocol_id; + rekey->spi = n->spi; + rekey->i_proposal = proposal; + rekey->r_proposal = + ikev2_select_proposal (proposal, IKEV2_PROTOCOL_ESP); + rekey->tsi = tsi; + rekey->tsr = tsr; + /* update Ni */ + vec_free (sa->i_nonce); + vec_add (sa->i_nonce, i_nonce, IKEV2_NONCE_SIZE); + /* generate new Nr */ + vec_free (sa->r_nonce); + sa->r_nonce = vec_new (u8, IKEV2_NONCE_SIZE); + RAND_bytes ((u8 *) sa->r_nonce, IKEV2_NONCE_SIZE); + } + +cleanup_and_exit: + vec_free (plaintext); + vec_free (n); +} + +static u8 * +ikev2_sa_generate_authmsg (ikev2_sa_t * sa, int is_responder) +{ + u8 *authmsg = 0; + u8 *data; + u8 *nonce; + ikev2_id_t *id; + u8 *key; + u8 *packet_data; + ikev2_sa_transform_t *tr_prf; + + tr_prf = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF); + + if (is_responder) + { + id = &sa->r_id; + key = sa->sk_pr; + nonce = sa->i_nonce; + packet_data = sa->last_sa_init_res_packet_data; + } + else + { + id = &sa->i_id; + key = sa->sk_pi; + nonce = sa->r_nonce; + packet_data = sa->last_sa_init_req_packet_data; + } + + data = vec_new (u8, 4); + data[0] = id->type; + vec_append (data, id->data); + + u8 *id_hash = ikev2_calc_prf (tr_prf, key, data); + vec_append (authmsg, packet_data); + vec_append (authmsg, nonce); + vec_append (authmsg, id_hash); + vec_free (id_hash); + vec_free (data); + + return authmsg; +} + +static int +ikev2_ts_cmp (ikev2_ts_t * ts1, ikev2_ts_t * ts2) +{ + if (ts1->ts_type == ts2->ts_type && ts1->protocol_id == ts2->protocol_id && + ts1->start_port == ts2->start_port && ts1->end_port == ts2->end_port && + ts1->start_addr.as_u32 == ts2->start_addr.as_u32 && + ts1->end_addr.as_u32 == ts2->end_addr.as_u32) + return 1; + + return 0; +} + +static void +ikev2_sa_match_ts (ikev2_sa_t * sa) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_profile_t *p; + ikev2_ts_t *ts, *tsi = 0, *tsr = 0; + + /* *INDENT-OFF* */ + pool_foreach (p, km->profiles, ({ + + /* check id */ + if (p->rem_id.type != sa->i_id.type || + vec_len(p->rem_id.data) != vec_len(sa->i_id.data) || + memcmp(p->rem_id.data, sa->i_id.data, vec_len(p->rem_id.data))) + continue; + + vec_foreach(ts, sa->childs[0].tsi) + { + if (ikev2_ts_cmp(&p->rem_ts, ts)) + { + tsi = vec_dup(ts); + break; + } + } + + vec_foreach(ts, sa->childs[0].tsr) + { + if (ikev2_ts_cmp(&p->loc_ts, ts)) + { + tsr = vec_dup(ts); + break; + } + } + + break; + })); + /* *INDENT-ON* */ + + if (tsi && tsr) + { + vec_free (sa->childs[0].tsi); + vec_free (sa->childs[0].tsr); + sa->childs[0].tsi = tsi; + sa->childs[0].tsr = tsr; + } + else + { + vec_free (tsi); + vec_free (tsr); + ikev2_set_state (sa, IKEV2_STATE_TS_UNACCEPTABLE); + } +} + +static void +ikev2_sa_auth (ikev2_sa_t * sa) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_profile_t *p, *sel_p = 0; + u8 *authmsg, *key_pad, *psk = 0, *auth = 0; + ikev2_sa_transform_t *tr_prf; + + tr_prf = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF); + + /* only shared key and rsa signature */ + if (!(sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC || + sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG)) + { + clib_warning ("unsupported authentication method %u", + sa->i_auth.method); + ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED); + return; + } + + key_pad = format (0, "%s", IKEV2_KEY_PAD); + authmsg = ikev2_sa_generate_authmsg (sa, 0); + + /* *INDENT-OFF* */ + pool_foreach (p, km->profiles, ({ + + /* check id */ + if (p->rem_id.type != sa->i_id.type || + vec_len(p->rem_id.data) != vec_len(sa->i_id.data) || + memcmp(p->rem_id.data, sa->i_id.data, vec_len(p->rem_id.data))) + continue; + + if (sa->i_auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC) + { + if (!p->auth.data || + p->auth.method != IKEV2_AUTH_METHOD_SHARED_KEY_MIC) + continue; + + psk = ikev2_calc_prf(tr_prf, p->auth.data, key_pad); + auth = ikev2_calc_prf(tr_prf, psk, authmsg); + + if (!memcmp(auth, sa->i_auth.data, vec_len(sa->i_auth.data))) + { + ikev2_set_state(sa, IKEV2_STATE_AUTHENTICATED); + vec_free(auth); + sel_p = p; + break; + } + + } + else if (sa->i_auth.method == IKEV2_AUTH_METHOD_RSA_SIG) + { + if (p->auth.method != IKEV2_AUTH_METHOD_RSA_SIG) + continue; + + if (ikev2_verify_sign(p->auth.key, sa->i_auth.data, authmsg) == 1) + { + ikev2_set_state(sa, IKEV2_STATE_AUTHENTICATED); + sel_p = p; + break; + } + } + + vec_free(auth); + vec_free(psk); + })); + /* *INDENT-ON* */ + + vec_free (authmsg); + + if (sa->state == IKEV2_STATE_AUTHENTICATED) + { + vec_free (sa->r_id.data); + sa->r_id.data = vec_dup (sel_p->loc_id.data); + sa->r_id.type = sel_p->loc_id.type; + + /* generate our auth data */ + authmsg = ikev2_sa_generate_authmsg (sa, 1); + if (sel_p->auth.method == IKEV2_AUTH_METHOD_SHARED_KEY_MIC) + { + sa->r_auth.data = ikev2_calc_prf (tr_prf, psk, authmsg); + sa->r_auth.method = IKEV2_AUTH_METHOD_SHARED_KEY_MIC; + } + else if (sel_p->auth.method == IKEV2_AUTH_METHOD_RSA_SIG) + { + sa->r_auth.data = ikev2_calc_sign (km->pkey, authmsg); + sa->r_auth.method = IKEV2_AUTH_METHOD_RSA_SIG; + } + vec_free (authmsg); + + /* select transforms for 1st child sa */ + ikev2_sa_free_proposal_vector (&sa->childs[0].r_proposals); + sa->childs[0].r_proposals = + ikev2_select_proposal (sa->childs[0].i_proposals, IKEV2_PROTOCOL_ESP); + } + else + { + ikev2_set_state (sa, IKEV2_STATE_AUTH_FAILED); + } + vec_free (psk); + vec_free (key_pad); +} + +static int +ikev2_create_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa, + ikev2_child_sa_t * child) +{ + ipsec_add_del_tunnel_args_t a; + ikev2_sa_transform_t *tr; + u8 encr_type = 0; + + if (!child->r_proposals) + { + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + } + + memset (&a, 0, sizeof (a)); + a.is_add = 1; + a.local_ip.as_u32 = sa->raddr.as_u32; + a.remote_ip.as_u32 = sa->iaddr.as_u32; + a.local_spi = child->i_proposals[0].spi; + a.remote_spi = child->r_proposals[0].spi; + a.anti_replay = 1; + + tr = + ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_ESN); + if (tr) + a.esn = tr->esn_type; + else + a.esn = 0; + + tr = + ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + if (tr) + { + if (tr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC && tr->key_len) + { + switch (tr->key_len) + { + case 16: + encr_type = IPSEC_CRYPTO_ALG_AES_CBC_128; + break; + case 24: + encr_type = IPSEC_CRYPTO_ALG_AES_CBC_192; + break; + case 32: + encr_type = IPSEC_CRYPTO_ALG_AES_CBC_256; + break; + default: + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + break; + } + } + else + { + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + } + } + else + { + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + } + + tr = + ikev2_sa_get_td_for_type (child->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + if (tr) + { + if (tr->integ_type != IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA1_96) + { + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + } + } + else + { + ikev2_set_state (sa, IKEV2_STATE_NO_PROPOSAL_CHOSEN); + return 1; + } + + ikev2_calc_child_keys (sa, child); + + a.integ_alg = IPSEC_INTEG_ALG_SHA1_96; + a.local_integ_key_len = vec_len (child->sk_ar); + clib_memcpy (a.local_integ_key, child->sk_ar, a.local_integ_key_len); + a.remote_integ_key_len = vec_len (child->sk_ai); + clib_memcpy (a.remote_integ_key, child->sk_ai, a.remote_integ_key_len); + + a.crypto_alg = encr_type; + a.local_crypto_key_len = vec_len (child->sk_er); + clib_memcpy (a.local_crypto_key, child->sk_er, a.local_crypto_key_len); + a.remote_crypto_key_len = vec_len (child->sk_ei); + clib_memcpy (a.remote_crypto_key, child->sk_ei, a.remote_crypto_key_len); + + ipsec_add_del_tunnel_if (&a); + + return 0; +} + +static int +ikev2_delete_tunnel_interface (vnet_main_t * vnm, ikev2_sa_t * sa, + ikev2_child_sa_t * child) +{ + ipsec_add_del_tunnel_args_t a; + + if (!vec_len (child->r_proposals)) + return 0; + + a.is_add = 0; + a.local_ip.as_u32 = sa->raddr.as_u32; + a.remote_ip.as_u32 = sa->iaddr.as_u32; + a.local_spi = child->i_proposals[0].spi; + a.remote_spi = child->r_proposals[0].spi; + + ipsec_add_del_tunnel_if (&a); + return 0; +} + +static u32 +ikev2_generate_resp (ikev2_sa_t * sa, ike_header_t * ike) +{ + v8 *integ = 0; + ike_payload_header_t *ph; + u16 plen; + u32 tlen = 0; + + ikev2_sa_transform_t *tr_encr, *tr_integ; + tr_encr = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + tr_integ = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + + ikev2_payload_chain_t *chain = 0; + ikev2_payload_new_chain (chain); + + if (ike->exchange == IKEV2_EXCHANGE_SA_INIT) + { + if (sa->r_proposals == 0) + { + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_NO_PROPOSAL_CHOSEN, 0); + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + } + else if (sa->dh_group == IKEV2_TRANSFORM_DH_TYPE_NONE) + { + u8 *data = vec_new (u8, 2); + ikev2_sa_transform_t *tr_dh; + tr_dh = + ikev2_sa_get_td_for_type (sa->r_proposals, + IKEV2_TRANSFORM_TYPE_DH); + ASSERT (tr_dh && tr_dh->dh_type); + + data[0] = (tr_dh->dh_type >> 8) & 0xff; + data[1] = (tr_dh->dh_type) & 0xff; + + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_INVALID_KE_PAYLOAD, + data); + vec_free (data); + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + } + else if (sa->state == IKEV2_STATE_NOTIFY_AND_DELETE) + { + u8 *data = vec_new (u8, 1); + + data[0] = sa->unsupported_cp; + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD, + data); + vec_free (data); + } + else + { + ike->rspi = clib_host_to_net_u64 (sa->rspi); + ikev2_payload_add_sa (chain, sa->r_proposals); + ikev2_payload_add_ke (chain, sa->dh_group, sa->r_dh_data); + ikev2_payload_add_nonce (chain, sa->r_nonce); + } + } + else if (ike->exchange == IKEV2_EXCHANGE_IKE_AUTH) + { + if (sa->state == IKEV2_STATE_AUTHENTICATED) + { + ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR); + ikev2_payload_add_auth (chain, &sa->r_auth); + ikev2_payload_add_sa (chain, sa->childs[0].r_proposals); + ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI); + ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR); + } + else if (sa->state == IKEV2_STATE_AUTH_FAILED) + { + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_AUTHENTICATION_FAILED, + 0); + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + } + else if (sa->state == IKEV2_STATE_TS_UNACCEPTABLE) + { + ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_TS_UNACCEPTABLE, + 0); + ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR); + ikev2_payload_add_auth (chain, &sa->r_auth); + } + else if (sa->state == IKEV2_STATE_NO_PROPOSAL_CHOSEN) + { + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_NO_PROPOSAL_CHOSEN, 0); + ikev2_payload_add_id (chain, &sa->r_id, IKEV2_PAYLOAD_IDR); + ikev2_payload_add_auth (chain, &sa->r_auth); + ikev2_payload_add_ts (chain, sa->childs[0].tsi, IKEV2_PAYLOAD_TSI); + ikev2_payload_add_ts (chain, sa->childs[0].tsr, IKEV2_PAYLOAD_TSR); + } + else if (sa->state == IKEV2_STATE_NOTIFY_AND_DELETE) + { + u8 *data = vec_new (u8, 1); + + data[0] = sa->unsupported_cp; + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD, + data); + vec_free (data); + } + else + { + ikev2_set_state (sa, IKEV2_STATE_DELETED); + goto done; + } + } + else if (ike->exchange == IKEV2_EXCHANGE_INFORMATIONAL) + { + /* if pending delete */ + if (sa->del) + { + /* The response to a request that deletes the IKE SA is an empty + INFORMATIONAL response. */ + if (sa->del[0].protocol_id == IKEV2_PROTOCOL_IKE) + { + ikev2_set_state (sa, IKEV2_STATE_NOTIFY_AND_DELETE); + } + /* The response to a request that deletes ESP or AH SAs will contain + delete payloads for the paired SAs going in the other direction. */ + else + { + ikev2_payload_add_delete (chain, sa->del); + } + vec_free (sa->del); + sa->del = 0; + } + /* received N(AUTHENTICATION_FAILED) */ + else if (sa->state == IKEV2_STATE_AUTH_FAILED) + { + ikev2_set_state (sa, IKEV2_STATE_DELETED); + goto done; + } + /* received unsupported critical payload */ + else if (sa->unsupported_cp) + { + u8 *data = vec_new (u8, 1); + + data[0] = sa->unsupported_cp; + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD, + data); + vec_free (data); + sa->unsupported_cp = 0; + } + /* else send empty response */ + } + else if (ike->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA) + { + if (sa->rekey) + { + ikev2_payload_add_sa (chain, sa->rekey[0].r_proposal); + ikev2_payload_add_nonce (chain, sa->r_nonce); + ikev2_payload_add_ts (chain, sa->rekey[0].tsi, IKEV2_PAYLOAD_TSI); + ikev2_payload_add_ts (chain, sa->rekey[0].tsr, IKEV2_PAYLOAD_TSR); + vec_del1 (sa->rekey, 0); + } + else if (sa->unsupported_cp) + { + u8 *data = vec_new (u8, 1); + + data[0] = sa->unsupported_cp; + ikev2_payload_add_notify (chain, + IKEV2_NOTIFY_MSG_UNSUPPORTED_CRITICAL_PAYLOAD, + data); + vec_free (data); + sa->unsupported_cp = 0; + } + else + { + ikev2_payload_add_notify (chain, IKEV2_NOTIFY_MSG_NO_ADDITIONAL_SAS, + 0); + } + } + + /* IKEv2 header */ + ike->version = IKE_VERSION_2; + ike->flags = IKEV2_HDR_FLAG_RESPONSE; + ike->nextpayload = IKEV2_PAYLOAD_SK; + tlen = sizeof (*ike); + + + if (ike->exchange == IKEV2_EXCHANGE_SA_INIT) + { + tlen += vec_len (chain->data); + ike->nextpayload = chain->first_payload_type; + ike->length = clib_host_to_net_u32 (tlen); + clib_memcpy (ike->payload, chain->data, vec_len (chain->data)); + + /* store whole IKE payload - needed for PSK auth */ + vec_free (sa->last_sa_init_res_packet_data); + vec_add (sa->last_sa_init_res_packet_data, ike, tlen); + } + else + { + + ikev2_payload_chain_add_padding (chain, tr_encr->block_size); + + /* SK payload */ + plen = sizeof (*ph); + ph = (ike_payload_header_t *) & ike->payload[0]; + ph->nextpayload = chain->first_payload_type; + ph->flags = 0; + int enc_len = ikev2_encrypt_data (sa, chain->data, ph->payload); + plen += enc_len; + + /* add space for hmac */ + plen += tr_integ->key_trunc; + tlen += plen; + + /* payload and total length */ + ph->length = clib_host_to_net_u16 (plen); + ike->length = clib_host_to_net_u32 (tlen); + + /* calc integrity data for whole packet except hash itself */ + integ = ikev2_calc_integr (tr_integ, sa->sk_ar, (u8 *) ike, + tlen - tr_integ->key_trunc); + + clib_memcpy (ike->payload + tlen - tr_integ->key_trunc - sizeof (*ike), + integ, tr_integ->key_trunc); + + /* store whole IKE payload - needed for retransmit */ + vec_free (sa->last_res_packet_data); + vec_add (sa->last_res_packet_data, ike, tlen); + } + +done: + ikev2_payload_destroy_chain (chain); + vec_free (integ); + return tlen; +} + +static int +ikev2_retransmit_sa_init (ike_header_t * ike, + ip4_address_t iaddr, ip4_address_t raddr) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_sa_t *sa; + u32 cpu_index = os_get_cpu_number (); + + /* *INDENT-OFF* */ + pool_foreach (sa, km->per_thread_data[cpu_index].sas, ({ + if (sa->ispi == clib_net_to_host_u64(ike->ispi) && + sa->iaddr.as_u32 == iaddr.as_u32 && + sa->raddr.as_u32 == raddr.as_u32) + { + int p = 0; + u32 len = clib_net_to_host_u32(ike->length); + u8 payload = ike->nextpayload; + + while (p < len && payload!= IKEV2_PAYLOAD_NONE) { + ike_payload_header_t * ikep = (ike_payload_header_t *) &ike->payload[p]; + u32 plen = clib_net_to_host_u16(ikep->length); + + if (plen < sizeof(ike_payload_header_t)) + return -1; + + if (payload == IKEV2_PAYLOAD_NONCE) + { + if (!memcmp(sa->i_nonce, ikep->payload, plen - sizeof(*ikep))) + { + /* req is retransmit */ + if (sa->state == IKEV2_STATE_SA_INIT) + { + ike_header_t * tmp; + tmp = (ike_header_t*)sa->last_sa_init_res_packet_data; + ike->ispi = tmp->ispi; + ike->rspi = tmp->rspi; + ike->nextpayload = tmp->nextpayload; + ike->version = tmp->version; + ike->exchange = tmp->exchange; + ike->flags = tmp->flags; + ike->msgid = tmp->msgid; + ike->length = tmp->length; + clib_memcpy(ike->payload, tmp->payload, + clib_net_to_host_u32(tmp->length) - sizeof(*ike)); + clib_warning("IKE_SA_INIT retransmit from %U to %U", + format_ip4_address, &raddr, + format_ip4_address, &iaddr); + return 1; + } + /* else ignore req */ + else + { + clib_warning("IKE_SA_INIT ignore from %U to %U", + format_ip4_address, &raddr, + format_ip4_address, &iaddr); + return -1; + } + } + } + payload = ikep->nextpayload; + p+=plen; + } + } + })); + /* *INDENT-ON* */ + + /* req is not retransmit */ + return 0; +} + +static int +ikev2_retransmit_resp (ikev2_sa_t * sa, ike_header_t * ike) +{ + u32 msg_id = clib_net_to_host_u32 (ike->msgid); + + /* new req */ + if (msg_id > sa->last_msg_id) + { + sa->last_msg_id = msg_id; + return 0; + } + /* retransmitted req */ + else if (msg_id == sa->last_msg_id) + { + ike_header_t *tmp; + tmp = (ike_header_t *) sa->last_res_packet_data; + ike->ispi = tmp->ispi; + ike->rspi = tmp->rspi; + ike->nextpayload = tmp->nextpayload; + ike->version = tmp->version; + ike->exchange = tmp->exchange; + ike->flags = tmp->flags; + ike->msgid = tmp->msgid; + ike->length = tmp->length; + clib_memcpy (ike->payload, tmp->payload, + clib_net_to_host_u32 (tmp->length) - sizeof (*ike)); + clib_warning ("IKE msgid %u retransmit from %U to %U", + msg_id, + format_ip4_address, &sa->raddr, + format_ip4_address, &sa->iaddr); + return 1; + } + /* old req ignore */ + else + { + clib_warning ("IKE msgid %u req ignore from %U to %U", + msg_id, + format_ip4_address, &sa->raddr, + format_ip4_address, &sa->iaddr); + return -1; + } +} + +static uword +ikev2_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame) +{ + u32 n_left_from, *from, *to_next; + ikev2_next_t next_index; + ikev2_main_t *km = &ikev2_main; + u32 cpu_index = os_get_cpu_number (); + + from = vlib_frame_vector_args (frame); + n_left_from = frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0; + vlib_buffer_t *b0; + u32 next0 = IKEV2_NEXT_ERROR_DROP; + u32 sw_if_index0; + ip4_header_t *ip40; + udp_header_t *udp0; + ike_header_t *ike0; + ikev2_sa_t *sa0 = 0; + ikev2_sa_t sa; /* temporary store for SA */ + int len = 0; + int r; + + /* speculatively enqueue b0 to the current next frame */ + bi0 = from[0]; + to_next[0] = bi0; + from += 1; + to_next += 1; + n_left_from -= 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + ike0 = vlib_buffer_get_current (b0); + vlib_buffer_advance (b0, -sizeof (*udp0)); + udp0 = vlib_buffer_get_current (b0); + vlib_buffer_advance (b0, -sizeof (*ip40)); + ip40 = vlib_buffer_get_current (b0); + + if (ike0->version != IKE_VERSION_2) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_NOT_IKEV2, 1); + goto dispatch0; + } + + if (ike0->exchange == IKEV2_EXCHANGE_SA_INIT) + { + sa0 = &sa; + memset (sa0, 0, sizeof (*sa0)); + + if (ike0->rspi == 0) + { + sa0->raddr.as_u32 = ip40->dst_address.as_u32; + sa0->iaddr.as_u32 = ip40->src_address.as_u32; + + r = ikev2_retransmit_sa_init (ike0, sa0->iaddr, sa0->raddr); + if (r == 1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_SA_INIT_RETRANSMIT, + 1); + len = clib_net_to_host_u32 (ike0->length); + goto dispatch0; + } + else if (r == -1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_SA_INIT_IGNORE, + 1); + goto dispatch0; + } + + ikev2_process_sa_init_req (vm, sa0, ike0); + + if (sa0->state == IKEV2_STATE_SA_INIT) + { + ikev2_sa_free_proposal_vector (&sa0->r_proposals); + sa0->r_proposals = + ikev2_select_proposal (sa0->i_proposals, + IKEV2_PROTOCOL_IKE); + ikev2_generate_sa_init_data (sa0); + } + + if (sa0->state == IKEV2_STATE_SA_INIT || + sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE) + { + len = ikev2_generate_resp (sa0, ike0); + } + + if (sa0->state == IKEV2_STATE_SA_INIT) + { + /* add SA to the pool */ + pool_get (km->per_thread_data[cpu_index].sas, sa0); + clib_memcpy (sa0, &sa, sizeof (*sa0)); + hash_set (km->per_thread_data[cpu_index].sa_by_rspi, + sa0->rspi, + sa0 - km->per_thread_data[cpu_index].sas); + } + else + { + ikev2_sa_free_all_vec (sa0); + } + } + } + else if (ike0->exchange == IKEV2_EXCHANGE_IKE_AUTH) + { + uword *p; + p = hash_get (km->per_thread_data[cpu_index].sa_by_rspi, + clib_net_to_host_u64 (ike0->rspi)); + if (p) + { + sa0 = pool_elt_at_index (km->per_thread_data[cpu_index].sas, + p[0]); + + r = ikev2_retransmit_resp (sa0, ike0); + if (r == 1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_REQ_RETRANSMIT, + 1); + len = clib_net_to_host_u32 (ike0->length); + goto dispatch0; + } + else if (r == -1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_REQ_IGNORE, + 1); + goto dispatch0; + } + + ikev2_process_auth_req (vm, sa0, ike0); + ikev2_sa_auth (sa0); + if (sa0->state == IKEV2_STATE_AUTHENTICATED) + { + ikev2_initial_contact_cleanup (sa0); + ikev2_sa_match_ts (sa0); + if (sa0->state != IKEV2_STATE_TS_UNACCEPTABLE) + ikev2_create_tunnel_interface (km->vnet_main, sa0, + &sa0->childs[0]); + } + len = ikev2_generate_resp (sa0, ike0); + } + } + else if (ike0->exchange == IKEV2_EXCHANGE_INFORMATIONAL) + { + uword *p; + p = hash_get (km->per_thread_data[cpu_index].sa_by_rspi, + clib_net_to_host_u64 (ike0->rspi)); + if (p) + { + sa0 = pool_elt_at_index (km->per_thread_data[cpu_index].sas, + p[0]); + + r = ikev2_retransmit_resp (sa0, ike0); + if (r == 1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_REQ_RETRANSMIT, + 1); + len = clib_net_to_host_u32 (ike0->length); + goto dispatch0; + } + else if (r == -1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_REQ_IGNORE, + 1); + goto dispatch0; + } + + ikev2_process_informational_req (vm, sa0, ike0); + if (sa0->del) + { + if (sa0->del[0].protocol_id != IKEV2_PROTOCOL_IKE) + { + ikev2_delete_t *d, *tmp, *resp = 0; + vec_foreach (d, sa0->del) + { + ikev2_child_sa_t *ch_sa; + ch_sa = ikev2_sa_get_child (sa0, d->spi, + d->protocol_id); + if (ch_sa) + { + ikev2_delete_tunnel_interface (km->vnet_main, + sa0, ch_sa); + vec_add2 (resp, tmp, 1); + tmp->protocol_id = d->protocol_id; + tmp->spi = ch_sa->r_proposals[0].spi; + ikev2_sa_del_child_sa (sa0, ch_sa); + } + } + vec_free (sa0->del); + sa0->del = resp; + } + } + len = ikev2_generate_resp (sa0, ike0); + } + } + else if (ike0->exchange == IKEV2_EXCHANGE_CREATE_CHILD_SA) + { + uword *p; + p = hash_get (km->per_thread_data[cpu_index].sa_by_rspi, + clib_net_to_host_u64 (ike0->rspi)); + if (p) + { + sa0 = pool_elt_at_index (km->per_thread_data[cpu_index].sas, + p[0]); + + r = ikev2_retransmit_resp (sa0, ike0); + if (r == 1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_REQ_RETRANSMIT, + 1); + len = clib_net_to_host_u32 (ike0->length); + goto dispatch0; + } + else if (r == -1) + { + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_IKE_REQ_IGNORE, + 1); + goto dispatch0; + } + + ikev2_process_create_child_sa_req (vm, sa0, ike0); + if (sa0->rekey) + { + if (sa0->rekey[0].protocol_id != IKEV2_PROTOCOL_IKE) + { + ikev2_child_sa_t *child; + vec_add2 (sa0->childs, child, 1); + child->r_proposals = sa0->rekey[0].r_proposal; + child->i_proposals = sa0->rekey[0].i_proposal; + child->tsi = sa0->rekey[0].tsi; + child->tsr = sa0->rekey[0].tsr; + ikev2_create_tunnel_interface (km->vnet_main, sa0, + child); + } + len = ikev2_generate_resp (sa0, ike0); + } + } + } + else + { + clib_warning ("IKEv2 exchange %u packet received from %U to %U", + ike0->exchange, + format_ip4_address, ip40->src_address.as_u8, + format_ip4_address, ip40->dst_address.as_u8); + } + + dispatch0: + /* if we are sending packet back, rewrite headers */ + if (len) + { + next0 = IKEV2_NEXT_IP4_LOOKUP; + ip40->dst_address.as_u32 = sa0->iaddr.as_u32; + ip40->src_address.as_u32 = sa0->raddr.as_u32; + udp0->length = + clib_host_to_net_u16 (len + sizeof (udp_header_t)); + udp0->checksum = 0; + b0->current_length = + len + sizeof (ip4_header_t) + sizeof (udp_header_t); + ip40->length = clib_host_to_net_u16 (b0->current_length); + ip40->checksum = ip4_header_checksum (ip40); + } + /* delete sa */ + if (sa0 && (sa0->state == IKEV2_STATE_DELETED || + sa0->state == IKEV2_STATE_NOTIFY_AND_DELETE)) + { + ikev2_child_sa_t *c; + + vec_foreach (c, sa0->childs) + ikev2_delete_tunnel_interface (km->vnet_main, sa0, c); + + ikev2_delete_sa (sa0); + } + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_RX]; + + if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE) + && (b0->flags & VLIB_BUFFER_IS_TRACED))) + { + ikev2_trace_t *t = vlib_add_trace (vm, node, b0, sizeof (*t)); + t->sw_if_index = sw_if_index0; + t->next_index = next0; + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + vlib_node_increment_counter (vm, ikev2_node.index, + IKEV2_ERROR_PROCESSED, frame->n_vectors); + return frame->n_vectors; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (ikev2_node,static) = { + .function = ikev2_node_fn, + .name = "ikev2", + .vector_size = sizeof (u32), + .format_trace = format_ikev2_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(ikev2_error_strings), + .error_strings = ikev2_error_strings, + + .n_next_nodes = IKEV2_N_NEXT, + + .next_nodes = { + [IKEV2_NEXT_IP4_LOOKUP] = "ip4-lookup", + [IKEV2_NEXT_ERROR_DROP] = "error-drop", + }, +}; +/* *INDENT-ON* */ + + +static ikev2_profile_t * +ikev2_profile_index_by_name (u8 * name) +{ + ikev2_main_t *km = &ikev2_main; + uword *p; + + p = mhash_get (&km->profile_index_by_name, name); + if (!p) + return 0; + + return pool_elt_at_index (km->profiles, p[0]); +} + +clib_error_t * +ikev2_set_local_key (vlib_main_t * vm, u8 * file) +{ + ikev2_main_t *km = &ikev2_main; + + km->pkey = ikev2_load_key_file (file); + if (km->pkey == NULL) + return clib_error_return (0, "load key '%s' failed", file); + + return 0; +} + +clib_error_t * +ikev2_add_del_profile (vlib_main_t * vm, u8 * name, int is_add) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_profile_t *p; + + if (is_add) + { + if (ikev2_profile_index_by_name (name)) + return clib_error_return (0, "policy %v already exists", name); + + pool_get (km->profiles, p); + memset (p, 0, sizeof (*p)); + p->name = vec_dup (name); + uword index = p - km->profiles; + mhash_set_mem (&km->profile_index_by_name, name, &index, 0); + } + else + { + p = ikev2_profile_index_by_name (name); + if (!p) + return clib_error_return (0, "policy %v does not exists", name); + + vec_free (p->name); + pool_put (km->profiles, p); + mhash_unset (&km->profile_index_by_name, name, 0); + } + return 0; +} + +clib_error_t * +ikev2_set_profile_auth (vlib_main_t * vm, u8 * name, u8 auth_method, + u8 * auth_data, u8 data_hex_format) +{ + ikev2_profile_t *p; + clib_error_t *r; + + p = ikev2_profile_index_by_name (name); + + if (!p) + { + r = clib_error_return (0, "unknown profile %v", name); + return r; + } + vec_free (p->auth.data); + p->auth.method = auth_method; + p->auth.data = vec_dup (auth_data); + p->auth.hex = data_hex_format; + + if (auth_method == IKEV2_AUTH_METHOD_RSA_SIG) + { + vec_add1 (p->auth.data, 0); + if (p->auth.key) + EVP_PKEY_free (p->auth.key); + p->auth.key = ikev2_load_cert_file (auth_data); + if (p->auth.key == NULL) + return clib_error_return (0, "load cert '%s' failed", auth_data); + } + + return 0; +} + +clib_error_t * +ikev2_set_profile_id (vlib_main_t * vm, u8 * name, u8 id_type, u8 * data, + int is_local) +{ + ikev2_profile_t *p; + clib_error_t *r; + + if (id_type > IKEV2_ID_TYPE_ID_RFC822_ADDR + && id_type < IKEV2_ID_TYPE_ID_KEY_ID) + { + r = clib_error_return (0, "unsupported identity type %U", + format_ikev2_id_type, id_type); + return r; + } + + p = ikev2_profile_index_by_name (name); + + if (!p) + { + r = clib_error_return (0, "unknown profile %v", name); + return r; + } + + if (is_local) + { + vec_free (p->loc_id.data); + p->loc_id.type = id_type; + p->loc_id.data = vec_dup (data); + } + else + { + vec_free (p->rem_id.data); + p->rem_id.type = id_type; + p->rem_id.data = vec_dup (data); + } + + return 0; +} + +clib_error_t * +ikev2_set_profile_ts (vlib_main_t * vm, u8 * name, u8 protocol_id, + u16 start_port, u16 end_port, ip4_address_t start_addr, + ip4_address_t end_addr, int is_local) +{ + ikev2_profile_t *p; + clib_error_t *r; + + p = ikev2_profile_index_by_name (name); + + if (!p) + { + r = clib_error_return (0, "unknown profile %v", name); + return r; + } + + if (is_local) + { + p->loc_ts.start_addr.as_u32 = start_addr.as_u32; + p->loc_ts.end_addr.as_u32 = end_addr.as_u32; + p->loc_ts.start_port = start_port; + p->loc_ts.end_port = end_port; + p->loc_ts.protocol_id = protocol_id; + p->loc_ts.ts_type = 7; + } + else + { + p->rem_ts.start_addr.as_u32 = start_addr.as_u32; + p->rem_ts.end_addr.as_u32 = end_addr.as_u32; + p->rem_ts.start_port = start_port; + p->rem_ts.end_port = end_port; + p->rem_ts.protocol_id = protocol_id; + p->rem_ts.ts_type = 7; + } + + return 0; +} + + +clib_error_t * +ikev2_init (vlib_main_t * vm) +{ + ikev2_main_t *km = &ikev2_main; + clib_error_t *error; + vlib_thread_main_t *tm = vlib_get_thread_main (); + int thread_id; + + memset (km, 0, sizeof (ikev2_main_t)); + km->vnet_main = vnet_get_main (); + km->vlib_main = vm; + + ikev2_crypto_init (km); + + mhash_init_vec_string (&km->profile_index_by_name, sizeof (uword)); + + vec_validate (km->per_thread_data, tm->n_vlib_mains - 1); + for (thread_id = 0; thread_id < tm->n_vlib_mains - 1; thread_id++) + { + km->per_thread_data[thread_id].sa_by_rspi = + hash_create (0, sizeof (uword)); + } + + if ((error = vlib_call_init_function (vm, ikev2_cli_init))) + return error; + + udp_register_dst_port (vm, 500, ikev2_node.index, 1); + + return 0; +} + + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ikev2.h b/src/vnet/ipsec/ikev2.h new file mode 100644 index 00000000000..723fdde8c1c --- /dev/null +++ b/src/vnet/ipsec/ikev2.h @@ -0,0 +1,410 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef __included_ikev2_h__ +#define __included_ikev2_h__ + +#include +#include + +#include + +#define IKEV2_NONCE_SIZE 32 + +#define IKEV2_KEY_PAD "Key Pad for IKEv2" + +typedef u8 v8; + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u64 ispi; + u64 rspi; + u8 nextpayload; + u8 version; + u8 exchange; + u8 flags; + u32 msgid; u32 length; u8 payload[0]; +}) ike_header_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct + { + u8 nextpayload; + u8 flags; + u16 length; + u16 dh_group; + u8 reserved[2]; u8 payload[0];}) ike_ke_payload_header_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 nextpayload; + u8 flags; + u16 length; u8 payload[0]; +}) ike_payload_header_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 nextpayload; + u8 flags; + u16 length; + u8 auth_method; + u8 reserved[3]; + u8 payload[0]; +}) ike_auth_payload_header_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 nextpayload; + u8 flags; + u16 length; + u8 id_type; + u8 reserved[3]; u8 payload[0]; +}) ike_id_payload_header_t; +/* *INDENT-ON* */ + +#define IKE_VERSION_2 0x20 + +#define IKEV2_EXCHANGE_SA_INIT 34 +#define IKEV2_EXCHANGE_IKE_AUTH 35 +#define IKEV2_EXCHANGE_CREATE_CHILD_SA 36 +#define IKEV2_EXCHANGE_INFORMATIONAL 37 + +#define IKEV2_HDR_FLAG_INITIATOR (1<<3) +#define IKEV2_HDR_FLAG_VERSION (1<<4) +#define IKEV2_HDR_FLAG_RESPONSE (1<<5) + +#define IKEV2_PAYLOAD_FLAG_CRITICAL (1<<7) + +#define IKEV2_PAYLOAD_NONE 0 +#define IKEV2_PAYLOAD_SA 33 +#define IKEV2_PAYLOAD_KE 34 +#define IKEV2_PAYLOAD_IDI 35 +#define IKEV2_PAYLOAD_IDR 36 +#define IKEV2_PAYLOAD_AUTH 39 +#define IKEV2_PAYLOAD_NONCE 40 +#define IKEV2_PAYLOAD_NOTIFY 41 +#define IKEV2_PAYLOAD_DELETE 42 +#define IKEV2_PAYLOAD_VENDOR 43 +#define IKEV2_PAYLOAD_TSI 44 +#define IKEV2_PAYLOAD_TSR 45 +#define IKEV2_PAYLOAD_SK 46 + +typedef enum +{ + IKEV2_PROTOCOL_IKE = 1, + IKEV2_PROTOCOL_AH = 2, + IKEV2_PROTOCOL_ESP = 3, +} ikev2_protocol_id_t; + +#define foreach_ikev2_notify_msg_type \ + _( 0, NONE) \ + _( 1, UNSUPPORTED_CRITICAL_PAYLOAD) \ + _( 4, INVALID_IKE_SPI) \ + _( 5, INVALID_MAJOR_VERSION) \ + _( 7, INVALID_SYNTAX) \ + _( 8, INVALID_MESSAGE_ID) \ + _( 11, INVALID_SPI) \ + _( 14, NO_PROPOSAL_CHOSEN) \ + _( 17, INVALID_KE_PAYLOAD) \ + _( 24, AUTHENTICATION_FAILED) \ + _( 34, SINGLE_PAIR_REQUIRED) \ + _( 35, NO_ADDITIONAL_SAS) \ + _( 36, INTERNAL_ADDRESS_FAILURE) \ + _( 37, FAILED_CP_REQUIRED) \ + _( 38, TS_UNACCEPTABLE) \ + _( 39, INVALID_SELECTORS) \ + _( 40, UNACCEPTABLE_ADDRESSES) \ + _( 41, UNEXPECTED_NAT_DETECTED) \ + _( 42, USE_ASSIGNED_HoA) \ + _( 43, TEMPORARY_FAILURE) \ + _( 44, CHILD_SA_NOT_FOUND) \ + _( 45, INVALID_GROUP_ID) \ + _( 46, AUTHORIZATION_FAILED) \ + _(16384, INITIAL_CONTACT) \ + _(16385, SET_WINDOW_SIZE) \ + _(16386, ADDITIONAL_TS_POSSIBLE) \ + _(16387, IPCOMP_SUPPORTED) \ + _(16388, NAT_DETECTION_SOURCE_IP) \ + _(16389, NAT_DETECTION_DESTINATION_IP) \ + _(16390, COOKIE) \ + _(16391, USE_TRANSPORT_MODE) \ + _(16392, HTTP_CERT_LOOKUP_SUPPORTED) \ + _(16393, REKEY_SA) \ + _(16394, ESP_TFC_PADDING_NOT_SUPPORTED) \ + _(16395, NON_FIRST_FRAGMENTS_ALSO) \ + _(16396, MOBIKE_SUPPORTED) \ + _(16397, ADDITIONAL_IP4_ADDRESS) \ + _(16398, ADDITIONAL_IP6_ADDRESS) \ + _(16399, NO_ADDITIONAL_ADDRESSES) \ + _(16400, UPDATE_SA_ADDRESSES) \ + _(16401, COOKIE2) \ + _(16402, NO_NATS_ALLOWED) \ + _(16403, AUTH_LIFETIME) \ + _(16404, MULTIPLE_AUTH_SUPPORTED) \ + _(16405, ANOTHER_AUTH_FOLLOWS) \ + _(16406, REDIRECT_SUPPORTED) \ + _(16407, REDIRECT) \ + _(16408, REDIRECTED_FROM) \ + _(16409, TICKET_LT_OPAQUE) \ + _(16410, TICKET_REQUEST) \ + _(16411, TICKET_ACK) \ + _(16412, TICKET_NACK) \ + _(16413, TICKET_OPAQUE) \ + _(16414, LINK_ID) \ + _(16415, USE_WESP_MODE) \ + _(16416, ROHC_SUPPORTED) \ + _(16417, EAP_ONLY_AUTHENTICATION) \ + _(16418, CHILDLESS_IKEV2_SUPPORTED) \ + _(16419, QUICK_CRASH_DETECTION) \ + _(16420, IKEV2_MESSAGE_ID_SYNC_SUPPORTED) \ + _(16421, IPSEC_REPLAY_COUNTER_SYNC_SUPPORTED) \ + _(16422, IKEV2_MESSAGE_ID_SYNC) \ + _(16423, IPSEC_REPLAY_COUNTER_SYNC) \ + _(16424, SECURE_PASSWORD_METHODS) \ + _(16425, PSK_PERSIST) \ + _(16426, PSK_CONFIRM) \ + _(16427, ERX_SUPPORTED) \ + _(16428, IFOM_CAPABILITY) \ + _(16429, SENDER_REQUEST_ID) \ + _(16430, IKEV2_FRAGMENTATION_SUPPORTED) \ + _(16431, SIGNATURE_HASH_ALGORITHMS) + + +typedef enum +{ +#define _(v,f) IKEV2_NOTIFY_MSG_##f = v, + foreach_ikev2_notify_msg_type +#undef _ +} ikev2_notify_msg_type_t; + +#define foreach_ikev2_transform_type \ + _(0, UNDEFINED, "undefinded") \ + _(1, ENCR, "encr") \ + _(2, PRF, "prf") \ + _(3, INTEG, "integ") \ + _(4, DH, "dh-group") \ + _(5, ESN, "esn") + +typedef enum +{ +#define _(v,f,s) IKEV2_TRANSFORM_TYPE_##f = v, + foreach_ikev2_transform_type +#undef _ + IKEV2_TRANSFORM_NUM_TYPES +} ikev2_transform_type_t; + + +#define foreach_ikev2_transform_encr_type \ + _(1 , DES_IV64, "des-iv64") \ + _(2 , DES, "des") \ + _(3 , 3DES, "3des") \ + _(4 , RC5, "rc5") \ + _(5 , IDEA, "idea") \ + _(6 , CAST, "cast") \ + _(7 , BLOWFISH, "blowfish") \ + _(8 , 3IDEA, "3idea") \ + _(9 , DES_IV32, "des-iv32") \ + _(11, NULL, "null") \ + _(12, AES_CBC, "aes-cbc") \ + _(13, AES_CTR, "aes-ctr") + +typedef enum +{ +#define _(v,f,str) IKEV2_TRANSFORM_ENCR_TYPE_##f = v, + foreach_ikev2_transform_encr_type +#undef _ +} ikev2_transform_encr_type_t; + +#define foreach_ikev2_transform_prf_type \ + _(1, PRF_HMAC_MD5, "hmac-md5") \ + _(2, PRF_HMAC_SHA1, "hmac-sha1") \ + _(3, PRF_MAC_TIGER, "mac-tiger") \ + _(4, PRF_AES128_XCBC, "aes128-xcbc") \ + _(5, PRF_HMAC_SHA2_256, "hmac-sha2-256") \ + _(6, PRF_HMAC_SHA2_384, "hmac-sha2-384") \ + _(7, PRF_HMAC_SHA2_512, "hmac-sha2-512") \ + _(8, PRF_AES128_CMAC, "aes128-cmac") + +typedef enum +{ +#define _(v,f,str) IKEV2_TRANSFORM_PRF_TYPE_##f = v, + foreach_ikev2_transform_prf_type +#undef _ +} ikev2_transform_prf_type_t; + +#define foreach_ikev2_transform_integ_type \ + _(0, NONE, "none") \ + _(1, AUTH_HMAC_MD5_96, "md5-96") \ + _(2, AUTH_HMAC_SHA1_96, "sha1-96") \ + _(3, AUTH_DES_MAC, "des-mac") \ + _(4, AUTH_KPDK_MD5, "kpdk-md5") \ + _(5, AUTH_AES_XCBC_96, "aes-xcbc-96") \ + _(6, AUTH_HMAC_MD5_128, "md5-128") \ + _(7, AUTH_HMAC_SHA1_160, "sha1-160") \ + _(8, AUTH_AES_CMAC_96, "cmac-96") \ + _(9, AUTH_AES_128_GMAC, "aes-128-gmac") \ + _(10, AUTH_AES_192_GMAC, "aes-192-gmac") \ + _(11, AUTH_AES_256_GMAC, "aes-256-gmac") \ + _(12, AUTH_HMAC_SHA2_256_128, "hmac-sha2-256-128") \ + _(13, AUTH_HMAC_SHA2_384_192, "hmac-sha2-384-192") \ + _(14, AUTH_HMAC_SHA2_512_256, "hmac-sha2-512-256") + +typedef enum +{ +#define _(v,f, str) IKEV2_TRANSFORM_INTEG_TYPE_##f = v, + foreach_ikev2_transform_integ_type +#undef _ +} ikev2_transform_integ_type_t; + +#if defined(OPENSSL_NO_CISCO_FECDH) +#define foreach_ikev2_transform_dh_type \ + _(0, NONE, "none") \ + _(1, MODP_768, "modp-768") \ + _(2, MODP_1024, "modp-1024") \ + _(5, MODP_1536, "modp-1536") \ + _(14, MODP_2048, "modp-2048") \ + _(15, MODP_3072, "modp-3072") \ + _(16, MODP_4096, "modp-4096") \ + _(17, MODP_6144, "modp-6144") \ + _(18, MODP_8192, "modp-8192") \ + _(19, ECP_256, "ecp-256") \ + _(20, ECP_384, "ecp-384") \ + _(21, ECP_521, "ecp-521") \ + _(22, MODP_1024_160, "modp-1024-160") \ + _(23, MODP_2048_224, "modp-2048-224") \ + _(24, MODP_2048_256, "modp-2048-256") \ + _(25, ECP_192, "ecp-192") \ + _(26, ECP_224, "ecp-224") \ + _(27, BRAINPOOL_224, "brainpool-224") \ + _(28, BRAINPOOL_256, "brainpool-256") \ + _(29, BRAINPOOL_384, "brainpool-384") \ + _(30, BRAINPOOL_512, "brainpool-512") +#else +#define foreach_ikev2_transform_dh_type \ + _(0, NONE, "none") \ + _(1, MODP_768, "modp-768") \ + _(2, MODP_1024, "modp-1024") \ + _(5, MODP_1536, "modp-1536") \ + _(14, MODP_2048, "modp-2048") \ + _(15, MODP_3072, "modp-3072") \ + _(16, MODP_4096, "modp-4096") \ + _(17, MODP_6144, "modp-6144") \ + _(18, MODP_8192, "modp-8192") \ + _(19, ECP_256, "ecp-256") \ + _(20, ECP_384, "ecp-384") \ + _(21, ECP_521, "ecp-521") \ + _(22, MODP_1024_160, "modp-1024-160") \ + _(23, MODP_2048_224, "modp-2048-224") \ + _(24, MODP_2048_256, "modp-2048-256") \ + _(25, ECP_192, "ecp-192") +#endif + +typedef enum +{ +#define _(v,f, str) IKEV2_TRANSFORM_DH_TYPE_##f = v, + foreach_ikev2_transform_dh_type +#undef _ +} ikev2_transform_dh_type_t; + +#define foreach_ikev2_transform_esn_type \ + _(0, NO_ESN, "no") \ + _(1, ESN, "yes") + +typedef enum +{ +#define _(v,f,str) IKEV2_TRANSFORM_ESN_TYPE_##f = v, + foreach_ikev2_transform_esn_type +#undef _ +} ikev2_transform_esn_type_t; + +#define foreach_ikev2_auth_method \ + _( 1, RSA_SIG, "rsa-sig") \ + _( 2, SHARED_KEY_MIC, "shared-key-mic") + +typedef enum +{ +#define _(v,f,s) IKEV2_AUTH_METHOD_##f = v, + foreach_ikev2_auth_method +#undef _ +} ikev2_auth_method_t; + +#define foreach_ikev2_id_type \ + _( 1, ID_IPV4_ADDR, "ip4-addr") \ + _( 2, ID_FQDN, "fqdn") \ + _( 3, ID_RFC822_ADDR, "rfc822") \ + _( 5, ID_IPV6_ADDR, "ip6-addr") \ + _( 9, ID_DER_ASN1_DN, "der-asn1-dn") \ + _(10, ID_DER_ASN1_GN, "der-asn1-gn") \ + _(11, ID_KEY_ID, "key-id") + +typedef enum +{ +#define _(v,f,s) IKEV2_ID_TYPE_##f = v, + foreach_ikev2_id_type +#undef _ +} ikev2_id_type_t; + +clib_error_t *ikev2_init (vlib_main_t * vm); +clib_error_t *ikev2_set_local_key (vlib_main_t * vm, u8 * file); +clib_error_t *ikev2_add_del_profile (vlib_main_t * vm, u8 * name, int is_add); +clib_error_t *ikev2_set_profile_auth (vlib_main_t * vm, u8 * name, + u8 auth_method, u8 * data, + u8 data_hex_format); +clib_error_t *ikev2_set_profile_id (vlib_main_t * vm, u8 * name, + u8 id_type, u8 * data, int is_local); +clib_error_t *ikev2_set_profile_ts (vlib_main_t * vm, u8 * name, + u8 protocol_id, u16 start_port, + u16 end_port, ip4_address_t start_addr, + ip4_address_t end_addr, int is_local); +/* ikev2_format.c */ +u8 *format_ikev2_auth_method (u8 * s, va_list * args); +u8 *format_ikev2_id_type (u8 * s, va_list * args); +u8 *format_ikev2_transform_type (u8 * s, va_list * args); +u8 *format_ikev2_notify_msg_type (u8 * s, va_list * args); +u8 *format_ikev2_transform_encr_type (u8 * s, va_list * args); +u8 *format_ikev2_transform_prf_type (u8 * s, va_list * args); +u8 *format_ikev2_transform_integ_type (u8 * s, va_list * args); +u8 *format_ikev2_transform_dh_type (u8 * s, va_list * args); +u8 *format_ikev2_transform_esn_type (u8 * s, va_list * args); +u8 *format_ikev2_sa_transform (u8 * s, va_list * args); + +uword unformat_ikev2_auth_method (unformat_input_t * input, va_list * args); +uword unformat_ikev2_id_type (unformat_input_t * input, va_list * args); +uword unformat_ikev2_transform_type (unformat_input_t * input, + va_list * args); +uword unformat_ikev2_transform_encr_type (unformat_input_t * input, + va_list * args); +uword unformat_ikev2_transform_prf_type (unformat_input_t * input, + va_list * args); +uword unformat_ikev2_transform_integ_type (unformat_input_t * input, + va_list * args); +uword unformat_ikev2_transform_dh_type (unformat_input_t * input, + va_list * args); +uword unformat_ikev2_transform_esn_type (unformat_input_t * input, + va_list * args); + +#endif /* __included_ikev2_h__ */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ikev2_cli.c b/src/vnet/ipsec/ikev2_cli.c new file mode 100644 index 00000000000..1369c187775 --- /dev/null +++ b/src/vnet/ipsec/ikev2_cli.c @@ -0,0 +1,479 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include +#include +#include +#include +#include +#include +#include + +u8 * +format_ikev2_id_type_and_data (u8 * s, va_list * args) +{ + ikev2_id_t *id = va_arg (*args, ikev2_id_t *); + + if (id->type == 0 || vec_len (id->data) == 0) + return format (s, "none"); + + s = format (s, "%U", format_ikev2_id_type, id->type); + + if (id->type == IKEV2_ID_TYPE_ID_FQDN || + id->type == IKEV2_ID_TYPE_ID_RFC822_ADDR) + { + s = format (s, " %v", id->data); + } + else + { + s = + format (s, " %U", format_hex_bytes, &id->data, + (uword) (vec_len (id->data))); + } + + return s; +} + + +static clib_error_t * +show_ikev2_sa_command_fn (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_main_per_thread_data_t *tkm; + ikev2_sa_t *sa; + ikev2_ts_t *ts; + ikev2_child_sa_t *child; + ikev2_sa_transform_t *tr; + + vec_foreach (tkm, km->per_thread_data) + { + /* *INDENT-OFF* */ + pool_foreach (sa, tkm->sas, ({ + u8 * s = 0; + vlib_cli_output(vm, " iip %U ispi %lx rip %U rspi %lx", + format_ip4_address, &sa->iaddr, sa->ispi, + format_ip4_address, &sa->raddr, sa->rspi); + + tr = ikev2_sa_get_td_for_type(sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + tr = ikev2_sa_get_td_for_type(sa->r_proposals, IKEV2_TRANSFORM_TYPE_PRF); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + tr = ikev2_sa_get_td_for_type(sa->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + tr = ikev2_sa_get_td_for_type(sa->r_proposals, IKEV2_TRANSFORM_TYPE_DH); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + vlib_cli_output(vm, " %v", s); + vec_free(s); + + vlib_cli_output(vm, " nonce i:%U\n r:%U", + format_hex_bytes, sa->i_nonce, vec_len(sa->i_nonce), + format_hex_bytes, sa->r_nonce, vec_len(sa->r_nonce)); + + vlib_cli_output(vm, " SK_d %U", + format_hex_bytes, sa->sk_d, vec_len(sa->sk_d)); + vlib_cli_output(vm, " SK_a i:%U\n r:%U", + format_hex_bytes, sa->sk_ai, vec_len(sa->sk_ai), + format_hex_bytes, sa->sk_ar, vec_len(sa->sk_ar)); + vlib_cli_output(vm, " SK_e i:%U\n r:%U", + format_hex_bytes, sa->sk_ei, vec_len(sa->sk_ei), + format_hex_bytes, sa->sk_er, vec_len(sa->sk_er)); + vlib_cli_output(vm, " SK_p i:%U\n r:%U", + format_hex_bytes, sa->sk_pi, vec_len(sa->sk_pi), + format_hex_bytes, sa->sk_pr, vec_len(sa->sk_pr)); + + vlib_cli_output(vm, " identifier (i) %U", + format_ikev2_id_type_and_data, &sa->i_id); + vlib_cli_output(vm, " identifier (r) %U", + format_ikev2_id_type_and_data, &sa->r_id); + + vec_foreach(child, sa->childs) + { + vlib_cli_output(vm, " child sa %u:", child - sa->childs); + + tr = ikev2_sa_get_td_for_type(child->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + tr = ikev2_sa_get_td_for_type(child->r_proposals, IKEV2_TRANSFORM_TYPE_INTEG); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + tr = ikev2_sa_get_td_for_type(child->r_proposals, IKEV2_TRANSFORM_TYPE_ESN); + s = format(s, "%U ", format_ikev2_sa_transform, tr); + + vlib_cli_output(vm, " %v", s); + vec_free(s); + + vlib_cli_output(vm, " spi(i) %lx spi(r) %lx", + child->i_proposals ? child->i_proposals[0].spi : 0, + child->r_proposals ? child->r_proposals[0].spi : 0); + + vlib_cli_output(vm, " SK_e i:%U\n r:%U", + format_hex_bytes, child->sk_ei, vec_len(child->sk_ei), + format_hex_bytes, child->sk_er, vec_len(child->sk_er)); + vlib_cli_output(vm, " SK_a i:%U\n r:%U", + format_hex_bytes, child->sk_ai, vec_len(child->sk_ai), + format_hex_bytes, child->sk_ar, vec_len(child->sk_ar)); + vlib_cli_output(vm, " traffic selectors (i):"); + vec_foreach(ts, child->tsi) + { + vlib_cli_output(vm, " %u type %u protocol_id %u addr " + "%U - %U port %u - %u", + ts - child->tsi, + ts->ts_type, ts->protocol_id, + format_ip4_address, &ts->start_addr, + format_ip4_address, &ts->end_addr, + clib_net_to_host_u16( ts->start_port), + clib_net_to_host_u16( ts->end_port)); + } + vlib_cli_output(vm, " traffic selectors (r):"); + vec_foreach(ts, child->tsr) + { + vlib_cli_output(vm, " %u type %u protocol_id %u addr " + "%U - %U port %u - %u", + ts - child->tsr, + ts->ts_type, ts->protocol_id, + format_ip4_address, &ts->start_addr, + format_ip4_address, &ts->end_addr, + clib_net_to_host_u16( ts->start_port), + clib_net_to_host_u16( ts->end_port)); + } + } + vlib_cli_output(vm, ""); + })); + /* *INDENT-ON* */ + } + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (show_ikev2_sa_command, static) = { + .path = "show ikev2 sa", + .short_help = "show ikev2 sa", + .function = show_ikev2_sa_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +ikev2_profile_add_del_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + u8 *name = 0; + clib_error_t *r = 0; + u32 id_type; + u8 *data = 0; + u32 tmp1, tmp2, tmp3; + ip4_address_t ip4; + ip4_address_t end_addr; + + const char *valid_chars = "a-zA-Z0-9_"; + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "add %U", unformat_token, valid_chars, &name)) + { + r = ikev2_add_del_profile (vm, name, 1); + goto done; + } + else + if (unformat + (line_input, "del %U", unformat_token, valid_chars, &name)) + { + r = ikev2_add_del_profile (vm, name, 0); + goto done; + } + else if (unformat (line_input, "set %U auth shared-key-mic string %v", + unformat_token, valid_chars, &name, &data)) + { + r = + ikev2_set_profile_auth (vm, name, + IKEV2_AUTH_METHOD_SHARED_KEY_MIC, data, + 0); + goto done; + } + else if (unformat (line_input, "set %U auth shared-key-mic hex %U", + unformat_token, valid_chars, &name, + unformat_hex_string, &data)) + { + r = + ikev2_set_profile_auth (vm, name, + IKEV2_AUTH_METHOD_SHARED_KEY_MIC, data, + 1); + goto done; + } + else if (unformat (line_input, "set %U auth rsa-sig cert-file %v", + unformat_token, valid_chars, &name, &data)) + { + r = + ikev2_set_profile_auth (vm, name, IKEV2_AUTH_METHOD_RSA_SIG, data, + 0); + goto done; + } + else if (unformat (line_input, "set %U id local %U %U", + unformat_token, valid_chars, &name, + unformat_ikev2_id_type, &id_type, + unformat_ip4_address, &ip4)) + { + data = vec_new (u8, 4); + clib_memcpy (data, ip4.as_u8, 4); + r = + ikev2_set_profile_id (vm, name, (u8) id_type, data, /*local */ 1); + goto done; + } + else if (unformat (line_input, "set %U id local %U 0x%U", + unformat_token, valid_chars, &name, + unformat_ikev2_id_type, &id_type, + unformat_hex_string, &data)) + { + r = + ikev2_set_profile_id (vm, name, (u8) id_type, data, /*local */ 1); + goto done; + } + else if (unformat (line_input, "set %U id local %U %v", + unformat_token, valid_chars, &name, + unformat_ikev2_id_type, &id_type, &data)) + { + r = + ikev2_set_profile_id (vm, name, (u8) id_type, data, /*local */ 1); + goto done; + } + else if (unformat (line_input, "set %U id remote %U %U", + unformat_token, valid_chars, &name, + unformat_ikev2_id_type, &id_type, + unformat_ip4_address, &ip4)) + { + data = vec_new (u8, 4); + clib_memcpy (data, ip4.as_u8, 4); + r = ikev2_set_profile_id (vm, name, (u8) id_type, data, /*remote */ + 0); + goto done; + } + else if (unformat (line_input, "set %U id remote %U 0x%U", + unformat_token, valid_chars, &name, + unformat_ikev2_id_type, &id_type, + unformat_hex_string, &data)) + { + r = ikev2_set_profile_id (vm, name, (u8) id_type, data, /*remote */ + 0); + goto done; + } + else if (unformat (line_input, "set %U id remote %U %v", + unformat_token, valid_chars, &name, + unformat_ikev2_id_type, &id_type, &data)) + { + r = ikev2_set_profile_id (vm, name, (u8) id_type, data, /*remote */ + 0); + goto done; + } + else if (unformat (line_input, "set %U traffic-selector local " + "ip-range %U - %U port-range %u - %u protocol %u", + unformat_token, valid_chars, &name, + unformat_ip4_address, &ip4, + unformat_ip4_address, &end_addr, + &tmp1, &tmp2, &tmp3)) + { + r = + ikev2_set_profile_ts (vm, name, (u8) tmp3, (u16) tmp1, (u16) tmp2, + ip4, end_addr, /*local */ 1); + goto done; + } + else if (unformat (line_input, "set %U traffic-selector remote " + "ip-range %U - %U port-range %u - %u protocol %u", + unformat_token, valid_chars, &name, + unformat_ip4_address, &ip4, + unformat_ip4_address, &end_addr, + &tmp1, &tmp2, &tmp3)) + { + r = + ikev2_set_profile_ts (vm, name, (u8) tmp3, (u16) tmp1, (u16) tmp2, + ip4, end_addr, /*remote */ 0); + goto done; + } + else + break; + } + + r = clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + +done: + vec_free (name); + vec_free (data); + unformat_free (line_input); + return r; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (ikev2_profile_add_del_command, static) = { + .path = "ikev2 profile", + .short_help = + "ikev2 profile [add|del] \n" + "ikev2 profile set auth [rsa-sig|shared-key-mic] [cert-file|string|hex]" + " \n" + "ikev2 profile set id \n" + "ikev2 profile set traffic-selector ip-range " + " - port-range - " + "protocol ", + .function = ikev2_profile_add_del_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +show_ikev2_profile_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + ikev2_main_t *km = &ikev2_main; + ikev2_profile_t *p; + + /* *INDENT-OFF* */ + pool_foreach (p, km->profiles, ({ + vlib_cli_output(vm, "profile %v", p->name); + + if (p->auth.data) + { + if (p->auth.hex) + vlib_cli_output(vm, " auth-method %U auth data 0x%U", + format_ikev2_auth_method, p->auth.method, + format_hex_bytes, p->auth.data, vec_len(p->auth.data)); + else + vlib_cli_output(vm, " auth-method %U auth data %v", + format_ikev2_auth_method, p->auth.method, p->auth.data); + } + + if (p->loc_id.data) + { + if (p->loc_id.type == IKEV2_ID_TYPE_ID_IPV4_ADDR) + vlib_cli_output(vm, " local id-type %U data %U", + format_ikev2_id_type, p->loc_id.type, + format_ip4_address, p->loc_id.data); + else if (p->loc_id.type == IKEV2_ID_TYPE_ID_KEY_ID) + vlib_cli_output(vm, " local id-type %U data 0x%U", + format_ikev2_id_type, p->loc_id.type, + format_hex_bytes, p->loc_id.data, + vec_len(p->loc_id.data)); + else + vlib_cli_output(vm, " local id-type %U data %v", + format_ikev2_id_type, p->loc_id.type, p->loc_id.data); + } + + if (p->rem_id.data) + { + if (p->rem_id.type == IKEV2_ID_TYPE_ID_IPV4_ADDR) + vlib_cli_output(vm, " remote id-type %U data %U", + format_ikev2_id_type, p->rem_id.type, + format_ip4_address, p->rem_id.data); + else if (p->rem_id.type == IKEV2_ID_TYPE_ID_KEY_ID) + vlib_cli_output(vm, " remote id-type %U data 0x%U", + format_ikev2_id_type, p->rem_id.type, + format_hex_bytes, p->rem_id.data, + vec_len(p->rem_id.data)); + else + vlib_cli_output(vm, " remote id-type %U data %v", + format_ikev2_id_type, p->rem_id.type, p->rem_id.data); + } + + if (p->loc_ts.end_addr.as_u32) + vlib_cli_output(vm, " local traffic-selector addr %U - %U port %u - %u" + " protocol %u", + format_ip4_address, &p->loc_ts.start_addr, + format_ip4_address, &p->loc_ts.end_addr, + p->loc_ts.start_port, p->loc_ts.end_port, + p->loc_ts.protocol_id); + + if (p->rem_ts.end_addr.as_u32) + vlib_cli_output(vm, " remote traffic-selector addr %U - %U port %u - %u" + " protocol %u", + format_ip4_address, &p->rem_ts.start_addr, + format_ip4_address, &p->rem_ts.end_addr, + p->rem_ts.start_port, p->rem_ts.end_port, + p->rem_ts.protocol_id); + })); + /* *INDENT-ON* */ + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (show_ikev2_profile_command, static) = { + .path = "show ikev2 profile", + .short_help = "show ikev2 profile", + .function = show_ikev2_profile_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +set_ikev2_local_key_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + clib_error_t *r = 0; + u8 *data = 0; + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "%s", &data)) + { + r = ikev2_set_local_key (vm, data); + goto done; + } + else + break; + } + + r = clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + +done: + vec_free (data); + unformat_free (line_input); + return r; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (set_ikev2_local_key_command, static) = { + .path = "set ikev2 local key", + .short_help = + "set ikev2 local key ", + .function = set_ikev2_local_key_command_fn, +}; +/* *INDENT-ON* */ + +clib_error_t * +ikev2_cli_init (vlib_main_t * vm) +{ + return 0; +} + +VLIB_INIT_FUNCTION (ikev2_cli_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ikev2_crypto.c b/src/vnet/ipsec/ikev2_crypto.c new file mode 100644 index 00000000000..32927629c5e --- /dev/null +++ b/src/vnet/ipsec/ikev2_crypto.c @@ -0,0 +1,765 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include +#include + +/* from RFC7296 */ +static const char modp_dh_768_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A63A3620FFFFFFFFFFFFFFFF"; +static const char modp_dh_768_generator[] = "02"; + +static const char modp_dh_1024_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE65381" "FFFFFFFFFFFFFFFF"; +static const char modp_dh_1024_generator[] = "02"; + +/* from RFC3526 */ +static const char modp_dh_1536_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" + "83655D23DCA3AD961C62F356208552BB9ED529077096966D" + "670C354E4ABC9804F1746C08CA237327FFFFFFFFFFFFFFFF"; +static const char modp_dh_1536_generator[] = "02"; + +static const char modp_dh_2048_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" + "83655D23DCA3AD961C62F356208552BB9ED529077096966D" + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" + "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" + "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" + "15728E5A8AACAA68FFFFFFFFFFFFFFFF"; +static const char modp_dh_2048_generator[] = "02"; + +static const char modp_dh_3072_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" + "83655D23DCA3AD961C62F356208552BB9ED529077096966D" + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" + "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" + "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" + "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64" + "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7" + "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B" + "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C" + "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31" + "43DB5BFCE0FD108E4B82D120A93AD2CAFFFFFFFFFFFFFFFF"; +static const char modp_dh_3072_generator[] = "02"; + +static const char modp_dh_4096_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD1" + "29024E088A67CC74020BBEA63B139B22514A08798E3404DD" + "EF9519B3CD3A431B302B0A6DF25F14374FE1356D6D51C245" + "E485B576625E7EC6F44C42E9A637ED6B0BFF5CB6F406B7ED" + "EE386BFB5A899FA5AE9F24117C4B1FE649286651ECE45B3D" + "C2007CB8A163BF0598DA48361C55D39A69163FA8FD24CF5F" + "83655D23DCA3AD961C62F356208552BB9ED529077096966D" + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3B" + "E39E772C180E86039B2783A2EC07A28FB5C55DF06F4C52C9" + "DE2BCBF6955817183995497CEA956AE515D2261898FA0510" + "15728E5A8AAAC42DAD33170D04507A33A85521ABDF1CBA64" + "ECFB850458DBEF0A8AEA71575D060C7DB3970F85A6E1E4C7" + "ABF5AE8CDB0933D71E8C94E04A25619DCEE3D2261AD2EE6B" + "F12FFA06D98A0864D87602733EC86A64521F2B18177B200C" + "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB31" + "43DB5BFCE0FD108E4B82D120A92108011A723C12A787E6D7" + "88719A10BDBA5B2699C327186AF4E23C1A946834B6150BDA" + "2583E9CA2AD44CE8DBBBC2DB04DE8EF92E8EFC141FBECAA6" + "287C59474E6BC05D99B2964FA090C3A2233BA186515BE7ED" + "1F612970CEE2D7AFB81BDD762170481CD0069127D5B05AA9" + "93B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934063199" "FFFFFFFFFFFFFFFF"; +static const char modp_dh_4096_generator[] = "02"; + +static const char modp_dh_6144_prime[] = + "FFFFFFFFFFFFFFFFC90FDAA22168C234C4C6628B80DC1CD129024E08" + "8A67CC74020BBEA63B139B22514A08798E3404DDEF9519B3CD3A431B" + "302B0A6DF25F14374FE1356D6D51C245E485B576625E7EC6F44C42E9" + "A637ED6B0BFF5CB6F406B7EDEE386BFB5A899FA5AE9F24117C4B1FE6" + "49286651ECE45B3DC2007CB8A163BF0598DA48361C55D39A69163FA8" + "FD24CF5F83655D23DCA3AD961C62F356208552BB9ED529077096966D" + "670C354E4ABC9804F1746C08CA18217C32905E462E36CE3BE39E772C" + "180E86039B2783A2EC07A28FB5C55DF06F4C52C9DE2BCBF695581718" + "3995497CEA956AE515D2261898FA051015728E5A8AAAC42DAD33170D" + "04507A33A85521ABDF1CBA64ECFB850458DBEF0A8AEA71575D060C7D" + "B3970F85A6E1E4C7ABF5AE8CDB0933D71E8C94E04A25619DCEE3D226" + "1AD2EE6BF12FFA06D98A0864D87602733EC86A64521F2B18177B200C" + "BBE117577A615D6C770988C0BAD946E208E24FA074E5AB3143DB5BFC" + "E0FD108E4B82D120A92108011A723C12A787E6D788719A10BDBA5B26" + "99C327186AF4E23C1A946834B6150BDA2583E9CA2AD44CE8DBBBC2DB" + "04DE8EF92E8EFC141FBECAA6287C59474E6BC05D99B2964FA090C3A2" + "233BA186515BE7ED1F612970CEE2D7AFB81BDD762170481CD0069127" + "D5B05AA993B4EA988D8FDDC186FFB7DC90A6C08F4DF435C934028492" + "36C3FAB4D27C7026C1D4DCB2602646DEC9751E763DBA37BDF8FF9406" + "AD9E530EE5DB382F413001AEB06A53ED9027D831179727B0865A8918" + "DA3EDBEBCF9B14ED44CE6CBACED4BB1BDB7F1447E6CC254B33205151" + "2BD7AF426FB8F401378CD2BF5983CA01C64B92ECF032EA15D1721D03" + "F482D7CE6E74FEF6D55E702F46980C82B5A84031900B1C9E59E7C97F" + "BEC7E8F323A97A7E36CC88BE0F1D45B7FF585AC54BD407B22B4154AA" + "CC8F6D7EBF48E1D814CC5ED20F8037E0A79715EEF29BE32806A1D58B" + "B7C5DA76F550AA3D8A1FBFF0EB19CCB1A313D55CDA56C9EC2EF29632" + "387FE8D76E3C0468043E8F663F4860EE12BF2D5B0B7474D6E694F91E" + "6DCC4024FFFFFFFFFFFFFFFF"; +static const char modp_dh_6144_generator[] = "02"; + +static const char modp_dh_8192_prime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static const char modp_dh_8192_generator[] = "02"; + +/* from RFC5114 */ +static const char modp_dh_1024_160_prime[] = + "B10B8F96A080E01DDE92DE5EAE5D54EC52C99FBCFB06A3C6" + "9A6A9DCA52D23B616073E28675A23D189838EF1E2EE652C0" + "13ECB4AEA906112324975C3CD49B83BFACCBDD7D90C4BD70" + "98488E9C219A73724EFFD6FAE5644738FAA31A4FF55BCCC0" + "A151AF5F0DC8B4BD45BF37DF365C1A65E68CFDA76D4DA708" "DF1FB2BC2E4A4371"; +static const char modp_dh_1024_160_generator[] = + "A4D1CBD5C3FD34126765A442EFB99905F8104DD258AC507F" + "D6406CFF14266D31266FEA1E5C41564B777E690F5504F213" + "160217B4B01B886A5E91547F9E2749F4D7FBD7D3B9A92EE1" + "909D0D2263F80A76A6A24C087A091F531DBF0A0169B6A28A" + "D662A4D18E73AFA32D779D5918D08BC8858F4DCEF97C2A24" "855E6EEB22B3B2E5"; + +static const char modp_dh_2048_224_prime[] = + "AD107E1E9123A9D0D660FAA79559C51FA20D64E5683B9FD1" + "B54B1597B61D0A75E6FA141DF95A56DBAF9A3C407BA1DF15" + "EB3D688A309C180E1DE6B85A1274A0A66D3F8152AD6AC212" + "9037C9EDEFDA4DF8D91E8FEF55B7394B7AD5B7D0B6C12207" + "C9F98D11ED34DBF6C6BA0B2C8BBC27BE6A00E0A0B9C49708" + "B3BF8A317091883681286130BC8985DB1602E714415D9330" + "278273C7DE31EFDC7310F7121FD5A07415987D9ADC0A486D" + "CDF93ACC44328387315D75E198C641A480CD86A1B9E587E8" + "BE60E69CC928B2B9C52172E413042E9B23F10B0E16E79763" + "C9B53DCF4BA80A29E3FB73C16B8E75B97EF363E2FFA31F71" + "CF9DE5384E71B81C0AC4DFFE0C10E64F"; +static const char modp_dh_2048_224_generator[] = + "AC4032EF4F2D9AE39DF30B5C8FFDAC506CDEBE7B89998CAF" + "74866A08CFE4FFE3A6824A4E10B9A6F0DD921F01A70C4AFA" + "AB739D7700C29F52C57DB17C620A8652BE5E9001A8D66AD7" + "C17669101999024AF4D027275AC1348BB8A762D0521BC98A" + "E247150422EA1ED409939D54DA7460CDB5F6C6B250717CBE" + "F180EB34118E98D119529A45D6F834566E3025E316A330EF" + "BB77A86F0C1AB15B051AE3D428C8F8ACB70A8137150B8EEB" + "10E183EDD19963DDD9E263E4770589EF6AA21E7F5F2FF381" + "B539CCE3409D13CD566AFBB48D6C019181E1BCFE94B30269" + "EDFE72FE9B6AA4BD7B5A0F1C71CFFF4C19C418E1F6EC0179" + "81BC087F2A7065B384B890D3191F2BFA"; + +static const char modp_dh_2048_256_prime[] = + "87A8E61DB4B6663CFFBBD19C651959998CEEF608660DD0F2" + "5D2CEED4435E3B00E00DF8F1D61957D4FAF7DF4561B2AA30" + "16C3D91134096FAA3BF4296D830E9A7C209E0C6497517ABD" + "5A8A9D306BCF67ED91F9E6725B4758C022E0B1EF4275BF7B" + "6C5BFC11D45F9088B941F54EB1E59BB8BC39A0BF12307F5C" + "4FDB70C581B23F76B63ACAE1CAA6B7902D52526735488A0E" + "F13C6D9A51BFA4AB3AD8347796524D8EF6A167B5A41825D9" + "67E144E5140564251CCACB83E6B486F6B3CA3F7971506026" + "C0B857F689962856DED4010ABD0BE621C3A3960A54E710C3" + "75F26375D7014103A4B54330C198AF126116D2276E11715F" + "693877FAD7EF09CADB094AE91E1A1597"; +static const char modp_dh_2048_256_generator[] = + "3FB32C9B73134D0B2E77506660EDBD484CA7B18F21EF2054" + "07F4793A1A0BA12510DBC15077BE463FFF4FED4AAC0BB555" + "BE3A6C1B0C6B47B1BC3773BF7E8C6F62901228F8C28CBB18" + "A55AE31341000A650196F931C77A57F2DDF463E5E9EC144B" + "777DE62AAAB8A8628AC376D282D6ED3864E67982428EBC83" + "1D14348F6F2F9193B5045AF2767164E1DFC967C1FB3F2E55" + "A4BD1BFFE83B9C80D052B985D182EA0ADB2A3B7313D3FE14" + "C8484B1E052588B9B7D2BBD2DF016199ECD06E1557CD0915" + "B3353BBB64E0EC377FD028370DF92B52C7891428CDC67EB6" + "184B523D1DB246C32F63078490F00EF8D647D148D4795451" + "5E2327CFEF98C582664B4C0F6CC41659"; + +v8 * +ikev2_calc_prf (ikev2_sa_transform_t * tr, v8 * key, v8 * data) +{ + HMAC_CTX ctx; + v8 *prf; + unsigned int len = 0; + + prf = vec_new (u8, tr->key_trunc); + HMAC_CTX_init (&ctx); + HMAC_Init_ex (&ctx, key, vec_len (key), tr->md, NULL); + HMAC_Update (&ctx, data, vec_len (data)); + HMAC_Final (&ctx, prf, &len); + HMAC_CTX_cleanup (&ctx); + + ASSERT (len == tr->key_trunc); + + return prf; +} + +u8 * +ikev2_calc_prfplus (ikev2_sa_transform_t * tr, u8 * key, u8 * seed, int len) +{ + v8 *t = 0, *s = 0, *tmp = 0, *ret = 0; + u8 x = 0; + + /* prf+ (K,S) = T1 | T2 | T3 | T4 | ... + + where: + T1 = prf (K, S | 0x01) + T2 = prf (K, T1 | S | 0x02) + T3 = prf (K, T2 | S | 0x03) + T4 = prf (K, T3 | S | 0x04) + */ + + while (vec_len (ret) < len && x < 255) + { + if (t) + { + vec_append (s, t); + vec_free (t); + } + + vec_append (s, seed); + vec_add2 (s, tmp, 1); + *tmp = x + 1; + t = ikev2_calc_prf (tr, key, s); + vec_append (ret, t); + vec_free (s); + x++; + } + + vec_free (t); + + if (x == 255) + { + vec_free (ret); + } + + return ret; +} + +v8 * +ikev2_calc_integr (ikev2_sa_transform_t * tr, v8 * key, u8 * data, int len) +{ + v8 *r; + HMAC_CTX hctx; + unsigned int l; + + ASSERT (tr->type == IKEV2_TRANSFORM_TYPE_INTEG); + + r = vec_new (u8, tr->key_len); + + /* verify integrity of data */ + HMAC_CTX_init (&hctx); + HMAC_Init (&hctx, key, vec_len (key), tr->md); + HMAC_Update (&hctx, (const u8 *) data, len); + HMAC_Final (&hctx, r, &l); + HMAC_CTX_cleanup (&hctx); + + ASSERT (l == tr->key_len); + + return r; +} + +v8 * +ikev2_decrypt_data (ikev2_sa_t * sa, u8 * data, int len) +{ + EVP_CIPHER_CTX ctx; + v8 *r; + int out_len = 0, block_size; + ikev2_sa_transform_t *tr_encr; + + tr_encr = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + block_size = tr_encr->block_size; + + /* check if data is multiplier of cipher block size */ + if (len % block_size) + { + clib_warning ("wrong data length"); + return 0; + } + + EVP_CIPHER_CTX_init (&ctx); + r = vec_new (u8, len - block_size); + EVP_DecryptInit_ex (&ctx, tr_encr->cipher, NULL, sa->sk_ei, data); + EVP_DecryptUpdate (&ctx, r, &out_len, data + block_size, len - block_size); + EVP_DecryptFinal_ex (&ctx, r + out_len, &out_len); + + /* remove padding */ + _vec_len (r) -= r[vec_len (r) - 1] + 1; + + EVP_CIPHER_CTX_cleanup (&ctx); + return r; +} + +int +ikev2_encrypt_data (ikev2_sa_t * sa, v8 * src, u8 * dst) +{ + EVP_CIPHER_CTX ctx; + int out_len; + int bs; + ikev2_sa_transform_t *tr_encr; + + tr_encr = + ikev2_sa_get_td_for_type (sa->r_proposals, IKEV2_TRANSFORM_TYPE_ENCR); + bs = tr_encr->block_size; + + /* generate IV */ + RAND_bytes (dst, bs); + + EVP_CIPHER_CTX_init (&ctx); + + EVP_EncryptInit_ex (&ctx, tr_encr->cipher, NULL, sa->sk_er, dst /* dst */ ); + EVP_EncryptUpdate (&ctx, dst + bs, &out_len, src, vec_len (src)); + + EVP_CIPHER_CTX_cleanup (&ctx); + + ASSERT (vec_len (src) == out_len); + + return out_len + bs; +} + +void +ikev2_generate_dh (ikev2_sa_t * sa, ikev2_sa_transform_t * t) +{ + int r; + + if (t->dh_group == IKEV2_DH_GROUP_MODP) + { + DH *dh = DH_new (); + BN_hex2bn (&dh->p, t->dh_p); + BN_hex2bn (&dh->g, t->dh_g); + DH_generate_key (dh); + + sa->r_dh_data = vec_new (u8, t->key_len); + r = BN_bn2bin (dh->pub_key, sa->r_dh_data); + ASSERT (r == t->key_len); + + BIGNUM *ex; + sa->dh_shared_key = vec_new (u8, t->key_len); + ex = BN_bin2bn (sa->i_dh_data, vec_len (sa->i_dh_data), NULL); + r = DH_compute_key (sa->dh_shared_key, ex, dh); + ASSERT (r == t->key_len); + BN_clear_free (ex); + DH_free (dh); + } + else if (t->dh_group == IKEV2_DH_GROUP_ECP) + { + EC_KEY *ec = EC_KEY_new_by_curve_name (t->nid); + ASSERT (ec); + + EC_KEY_generate_key (ec); + + const EC_POINT *r_point = EC_KEY_get0_public_key (ec); + const EC_GROUP *group = EC_KEY_get0_group (ec); + BIGNUM *x = NULL, *y = NULL; + BN_CTX *bn_ctx = BN_CTX_new (); + u16 x_off, y_off, len; + EC_POINT *i_point = EC_POINT_new (group); + EC_POINT *shared_point = EC_POINT_new (group); + + x = BN_new (); + y = BN_new (); + len = t->key_len / 2; + + EC_POINT_get_affine_coordinates_GFp (group, r_point, x, y, bn_ctx); + sa->r_dh_data = vec_new (u8, t->key_len); + x_off = len - BN_num_bytes (x); + memset (sa->r_dh_data, 0, x_off); + BN_bn2bin (x, sa->r_dh_data + x_off); + y_off = t->key_len - BN_num_bytes (y); + memset (sa->r_dh_data + len, 0, y_off - len); + BN_bn2bin (y, sa->r_dh_data + y_off); + + x = BN_bin2bn (sa->i_dh_data, len, x); + y = BN_bin2bn (sa->i_dh_data + len, len, y); + EC_POINT_set_affine_coordinates_GFp (group, i_point, x, y, bn_ctx); + sa->dh_shared_key = vec_new (u8, t->key_len); + EC_POINT_mul (group, shared_point, NULL, i_point, + EC_KEY_get0_private_key (ec), NULL); + EC_POINT_get_affine_coordinates_GFp (group, shared_point, x, y, bn_ctx); + x_off = len - BN_num_bytes (x); + memset (sa->dh_shared_key, 0, x_off); + BN_bn2bin (x, sa->dh_shared_key + x_off); + y_off = t->key_len - BN_num_bytes (y); + memset (sa->dh_shared_key + len, 0, y_off - len); + BN_bn2bin (y, sa->dh_shared_key + y_off); + + EC_KEY_free (ec); + BN_free (x); + BN_free (y); + BN_CTX_free (bn_ctx); + EC_POINT_free (i_point); + EC_POINT_free (shared_point); + } +} + +int +ikev2_verify_sign (EVP_PKEY * pkey, u8 * sigbuf, u8 * data) +{ + EVP_MD_CTX md_ctx; + + EVP_VerifyInit (&md_ctx, EVP_sha1 ()); + EVP_VerifyUpdate (&md_ctx, data, vec_len (data)); + + return EVP_VerifyFinal (&md_ctx, sigbuf, vec_len (sigbuf), pkey); +} + +u8 * +ikev2_calc_sign (EVP_PKEY * pkey, u8 * data) +{ + EVP_MD_CTX md_ctx; + unsigned int sig_len = 0; + u8 *sign; + + EVP_SignInit (&md_ctx, EVP_sha1 ()); + EVP_SignUpdate (&md_ctx, data, vec_len (data)); + /* get sign len */ + EVP_SignFinal (&md_ctx, NULL, &sig_len, pkey); + sign = vec_new (u8, sig_len); + /* calc sign */ + EVP_SignFinal (&md_ctx, sign, &sig_len, pkey); + + return sign; +} + +EVP_PKEY * +ikev2_load_cert_file (u8 * file) +{ + FILE *fp; + X509 *x509; + EVP_PKEY *pkey = NULL; + + fp = fopen ((char *) file, "r"); + if (!fp) + { + clib_warning ("open %s failed", file); + goto end; + } + + x509 = PEM_read_X509 (fp, NULL, NULL, NULL); + fclose (fp); + if (x509 == NULL) + { + clib_warning ("read cert %s failed", file); + goto end; + } + + pkey = X509_get_pubkey (x509); + if (pkey == NULL) + clib_warning ("get pubkey %s failed", file); + +end: + return pkey; +} + +EVP_PKEY * +ikev2_load_key_file (u8 * file) +{ + FILE *fp; + EVP_PKEY *pkey = NULL; + + fp = fopen ((char *) file, "r"); + if (!fp) + { + clib_warning ("open %s failed", file); + goto end; + } + + pkey = PEM_read_PrivateKey (fp, NULL, NULL, NULL); + fclose (fp); + if (pkey == NULL) + clib_warning ("read %s failed", file); + +end: + return pkey; +} + +void +ikev2_crypto_init (ikev2_main_t * km) +{ + ikev2_sa_transform_t *tr; + + /* vector of supported transforms - in order of preference */ + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_ENCR; + tr->encr_type = IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC; + tr->key_len = 256 / 8; + tr->block_size = 128 / 8; + tr->cipher = EVP_aes_256_cbc (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_ENCR; + tr->encr_type = IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC; + tr->key_len = 192 / 8; + tr->block_size = 128 / 8; + tr->cipher = EVP_aes_192_cbc (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_ENCR; + tr->encr_type = IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC; + tr->key_len = 128 / 8; + tr->block_size = 128 / 8; + tr->cipher = EVP_aes_128_cbc (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_PRF; + tr->prf_type = IKEV2_TRANSFORM_PRF_TYPE_PRF_HMAC_SHA1; + tr->key_len = 160 / 8; + tr->key_trunc = 160 / 8; + tr->md = EVP_sha1 (); + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_INTEG; + tr->integ_type = IKEV2_TRANSFORM_INTEG_TYPE_AUTH_HMAC_SHA1_96; + tr->key_len = 160 / 8; + tr->key_trunc = 96 / 8; + tr->md = EVP_sha1 (); + +#if defined(OPENSSL_NO_CISCO_FECDH) + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_BRAINPOOL_512; + tr->key_len = (512 * 2) / 8; + tr->nid = NID_brainpoolP512r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_BRAINPOOL_384; + tr->key_len = (384 * 2) / 8; + tr->nid = NID_brainpoolP384r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_BRAINPOOL_256; + tr->key_len = (256 * 2) / 8; + tr->nid = NID_brainpoolP256r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_BRAINPOOL_224; + tr->key_len = (224 * 2) / 8; + tr->nid = NID_brainpoolP224r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_ECP_224; + tr->key_len = (224 * 2) / 8; + tr->nid = NID_secp224r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; +#endif + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_ECP_521; + tr->key_len = (528 * 2) / 8; + tr->nid = NID_secp521r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_ECP_384; + tr->key_len = (384 * 2) / 8; + tr->nid = NID_secp384r1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_ECP_256; + tr->key_len = (256 * 2) / 8; + tr->nid = NID_X9_62_prime256v1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_ECP_192; + tr->key_len = (192 * 2) / 8; + tr->nid = NID_X9_62_prime192v1; + tr->dh_group = IKEV2_DH_GROUP_ECP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_2048_256; + tr->key_len = 2048 / 8; + tr->dh_p = (const char *) &modp_dh_2048_256_prime; + tr->dh_g = (const char *) &modp_dh_2048_256_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_2048_224; + tr->key_len = 2048 / 8; + tr->dh_p = (const char *) &modp_dh_2048_224_prime; + tr->dh_g = (const char *) &modp_dh_2048_224_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_1024_160; + tr->key_len = 1024 / 8; + tr->dh_p = (const char *) &modp_dh_1024_160_prime; + tr->dh_g = (const char *) &modp_dh_1024_160_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_8192; + tr->key_len = 8192 / 8; + tr->dh_p = (const char *) &modp_dh_8192_prime; + tr->dh_g = (const char *) &modp_dh_8192_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_6144; + tr->key_len = 6144 / 8; + tr->dh_p = (const char *) &modp_dh_6144_prime; + tr->dh_g = (const char *) &modp_dh_6144_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_4096; + tr->key_len = 4096 / 8; + tr->dh_p = (const char *) &modp_dh_4096_prime; + tr->dh_g = (const char *) &modp_dh_4096_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_3072; + tr->key_len = 3072 / 8; + tr->dh_p = (const char *) &modp_dh_3072_prime; + tr->dh_g = (const char *) &modp_dh_3072_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_2048; + tr->key_len = 2048 / 8; + tr->dh_p = (const char *) &modp_dh_2048_prime; + tr->dh_g = (const char *) &modp_dh_2048_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_1536; + tr->key_len = 1536 / 8; + tr->dh_p = (const char *) &modp_dh_1536_prime; + tr->dh_g = (const char *) &modp_dh_1536_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_1024; + tr->key_len = 1024 / 8; + tr->dh_p = (const char *) &modp_dh_1024_prime; + tr->dh_g = (const char *) &modp_dh_1024_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_DH; + tr->dh_type = IKEV2_TRANSFORM_DH_TYPE_MODP_768; + tr->key_len = 768 / 8; + tr->dh_p = (const char *) &modp_dh_768_prime; + tr->dh_g = (const char *) &modp_dh_768_generator; + tr->dh_group = IKEV2_DH_GROUP_MODP; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_ESN; + tr->esn_type = IKEV2_TRANSFORM_ESN_TYPE_ESN; + + vec_add2 (km->supported_transforms, tr, 1); + tr->type = IKEV2_TRANSFORM_TYPE_ESN; + tr->esn_type = IKEV2_TRANSFORM_ESN_TYPE_NO_ESN; +} + + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ikev2_format.c b/src/vnet/ipsec/ikev2_format.c new file mode 100644 index 00000000000..4d7a007f80d --- /dev/null +++ b/src/vnet/ipsec/ikev2_format.c @@ -0,0 +1,155 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#include +#include +#include +#include + +#include +#include +#include + +u8 * +format_ikev2_sa_transform (u8 * s, va_list * args) +{ + ikev2_sa_transform_t *tr = va_arg (*args, ikev2_sa_transform_t *); + + if (!tr) + return s; + + if (tr->type >= IKEV2_TRANSFORM_NUM_TYPES) + return s; + + s = format (s, "%U:", format_ikev2_transform_type, tr->type); + + switch (tr->type) + { + case IKEV2_TRANSFORM_TYPE_ENCR: + s = format (s, "%U", format_ikev2_transform_encr_type, tr->encr_type); + break; + case IKEV2_TRANSFORM_TYPE_PRF: + s = format (s, "%U", format_ikev2_transform_prf_type, tr->prf_type); + break; + case IKEV2_TRANSFORM_TYPE_INTEG: + s = format (s, "%U", format_ikev2_transform_integ_type, tr->integ_type); + break; + case IKEV2_TRANSFORM_TYPE_DH: + s = format (s, "%U", format_ikev2_transform_dh_type, tr->dh_type); + break; + case IKEV2_TRANSFORM_TYPE_ESN: + s = format (s, "%U", format_ikev2_transform_esn_type, tr->esn_type); + break; + default: + break; + } + + if (tr->type == IKEV2_TRANSFORM_TYPE_ENCR && + tr->encr_type == IKEV2_TRANSFORM_ENCR_TYPE_AES_CBC && tr->key_len) + s = format (s, "-%u", tr->key_len * 8); + else if (vec_len (tr->attrs) == 4 && tr->attrs[0] == 0x80 + && tr->attrs[1] == 0x0e) + s = format (s, "-%u", tr->attrs[2] * 256 + tr->attrs[3]); + else if (vec_len (tr->attrs)) + s = format (s, "(unknown attr %U)", format_hex_bytes, + tr->attrs, vec_len (tr->attrs)); + + return s; +} + +#define MACRO_FORMAT(lc) \ +u8 * format_ikev2_##lc (u8 * s, va_list * args) \ +{ \ + u32 i = va_arg (*args, u32); \ + char * t = 0; \ + switch (i) { \ + foreach_ikev2_##lc \ + default: \ + return format (s, "unknown (%u)", i); \ + } \ + s = format (s, "%s", t); \ + return s; \ +} + +#define MACRO_UNFORMAT(lc) \ +uword \ +unformat_ikev2_##lc (unformat_input_t * input, \ + va_list * args) \ +{ \ + u32 * r = va_arg (*args, u32 *); \ + if (0) ; \ + foreach_ikev2_##lc \ + else \ + return 0; \ + return 1; \ +} + +#define _(v,f,str) case IKEV2_AUTH_METHOD_##f: t = str; break; +MACRO_FORMAT (auth_method) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_AUTH_METHOD_##f; + MACRO_UNFORMAT (auth_method) +#undef _ +#define _(v,f,str) case IKEV2_TRANSFORM_TYPE_##f: t = str; break; + MACRO_FORMAT (transform_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_TYPE_##f; + MACRO_UNFORMAT (transform_type) +#undef _ +#define _(v,f) case IKEV2_NOTIFY_MSG_##f: t = #f; break; + MACRO_FORMAT (notify_msg_type) +#undef _ +#define _(v,f,str) case IKEV2_ID_TYPE_##f: t = str; break; + MACRO_FORMAT (id_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_ID_TYPE_##f; + MACRO_UNFORMAT (id_type) +#undef _ +#define _(v,f,str) case IKEV2_TRANSFORM_ENCR_TYPE_##f: t = str; break; + MACRO_FORMAT (transform_encr_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_ENCR_TYPE_##f; + MACRO_UNFORMAT (transform_encr_type) +#undef _ +#define _(v,f,str) case IKEV2_TRANSFORM_PRF_TYPE_##f: t = str; break; + MACRO_FORMAT (transform_prf_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_PRF_TYPE_##f; + MACRO_UNFORMAT (transform_prf_type) +#undef _ +#define _(v,f,str) case IKEV2_TRANSFORM_INTEG_TYPE_##f: t = str; break; + MACRO_FORMAT (transform_integ_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_INTEG_TYPE_##f; + MACRO_UNFORMAT (transform_integ_type) +#undef _ +#define _(v,f,str) case IKEV2_TRANSFORM_DH_TYPE_##f: t = str; break; + MACRO_FORMAT (transform_dh_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_DH_TYPE_##f; + MACRO_UNFORMAT (transform_dh_type) +#undef _ +#define _(v,f,str) case IKEV2_TRANSFORM_ESN_TYPE_##f: t = str; break; + MACRO_FORMAT (transform_esn_type) +#undef _ +#define _(v,f,str) else if (unformat (input, str)) *r = IKEV2_TRANSFORM_ESN_TYPE_##f; + MACRO_UNFORMAT (transform_esn_type) +#undef _ +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ikev2_payload.c b/src/vnet/ipsec/ikev2_payload.c new file mode 100644 index 00000000000..dd14812b550 --- /dev/null +++ b/src/vnet/ipsec/ikev2_payload.c @@ -0,0 +1,535 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include + +#include +#include +#include +#include + +#include +#include +#include + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct + { + u8 nextpayload; + u8 flags; + u16 length; + u8 protocol_id; + u8 spi_size; + u16 msg_type; + u8 payload[0];}) ike_notify_payload_header_t; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct + { + u8 ts_type; + u8 protocol_id; + u16 selector_len; + u16 start_port; + u16 end_port; + ip4_address_t start_addr; + ip4_address_t end_addr;}) ikev2_ts_payload_entry_t; +/* *INDENT-OFF* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct + { + u8 nextpayload; + u8 flags; + u16 length; + u8 num_ts; + u8 reserved[3]; + ikev2_ts_payload_entry_t ts[0];}) + ike_ts_payload_header_t; +/* *INDENT-OFF* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 last_or_more; + u8 reserved; + u16 proposal_len; + u8 proposal_num; + u8 protocol_id; + u8 spi_size; + u8 num_transforms; u32 spi[0]; +}) ike_sa_proposal_data_t; +/* *INDENT-OFF* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 last_or_more; + u8 reserved; + u16 transform_len; + u8 transform_type; + u8 reserved2; + u16 transform_id; + u8 attributes[0]; +}) ike_sa_transform_data_t; +/* *INDENT-OFF* */ + +/* *INDENT-OFF* */ +typedef CLIB_PACKED (struct { + u8 nextpayload; + u8 flags; + u16 length; + u8 protocol_id; + u8 spi_size; + u16 num_of_spi; + u32 spi[0]; +}) ike_delete_payload_header_t; +/* *INDENT-OFF* */ + +static ike_payload_header_t * +ikev2_payload_add_hdr (ikev2_payload_chain_t * c, u8 payload_type, int len) +{ + ike_payload_header_t *hdr = + (ike_payload_header_t *) & c->data[c->last_hdr_off]; + u8 *tmp; + + if (c->data) + hdr->nextpayload = payload_type; + else + c->first_payload_type = payload_type; + + c->last_hdr_off = vec_len (c->data); + vec_add2 (c->data, tmp, len); + hdr = (ike_payload_header_t *) tmp; + memset (hdr, 0, len); + + hdr->length = clib_host_to_net_u16 (len); + + return hdr; +} + +static void +ikev2_payload_add_data (ikev2_payload_chain_t * c, u8 * data) +{ + u16 len; + ike_payload_header_t *hdr; + + vec_append (c->data, data); + hdr = (ike_payload_header_t *) & c->data[c->last_hdr_off]; + len = clib_net_to_host_u16 (hdr->length); + hdr->length = clib_host_to_net_u16 (len + vec_len (data)); +} + +void +ikev2_payload_add_notify (ikev2_payload_chain_t * c, u16 msg_type, u8 * data) +{ + ike_notify_payload_header_t *n; + + n = + (ike_notify_payload_header_t *) ikev2_payload_add_hdr (c, + IKEV2_PAYLOAD_NOTIFY, + sizeof (*n)); + n->msg_type = clib_host_to_net_u16 (msg_type); + ikev2_payload_add_data (c, data); +} + +void +ikev2_payload_add_sa (ikev2_payload_chain_t * c, + ikev2_sa_proposal_t * proposals) +{ + ike_payload_header_t *ph; + ike_sa_proposal_data_t *prop; + ike_sa_transform_data_t *tr; + ikev2_sa_proposal_t *p; + ikev2_sa_transform_t *t; + + u8 *tmp; + u8 *pr_data = 0; + u8 *tr_data = 0; + + ikev2_payload_add_hdr (c, IKEV2_PAYLOAD_SA, sizeof (*ph)); + + vec_foreach (p, proposals) + { + int spi_size = (p->protocol_id == IKEV2_PROTOCOL_ESP) ? 4 : 0; + pr_data = vec_new (u8, sizeof (ike_sa_proposal_data_t) + spi_size); + prop = (ike_sa_proposal_data_t *) pr_data; + prop->last_or_more = proposals - p + 1 < vec_len (proposals) ? 2 : 0; + prop->protocol_id = p->protocol_id; + prop->proposal_num = p->proposal_num; + prop->spi_size = spi_size; + prop->num_transforms = vec_len (p->transforms); + + if (spi_size) + prop->spi[0] = clib_host_to_net_u32 (p->spi); + + DBG_PLD ("proposal num %u protocol_id %u last_or_more %u spi_size %u%s%U", + prop->proposal_num, prop->protocol_id, prop->last_or_more, + prop->spi_size, prop->spi_size ? " spi_data " : "", + format_hex_bytes, prop->spi, prop->spi_size); + + vec_foreach (t, p->transforms) + { + vec_add2 (tr_data, tmp, sizeof (*tr) + vec_len (t->attrs)); + tr = (ike_sa_transform_data_t *) tmp; + tr->last_or_more = + ((t - p->transforms) + 1 < vec_len (p->transforms)) ? 3 : 0; + tr->transform_type = t->type; + tr->transform_id = clib_host_to_net_u16 (t->transform_id); + tr->transform_len = + clib_host_to_net_u16 (sizeof (*tr) + vec_len (t->attrs)); + + if (vec_len (t->attrs) > 0) + clib_memcpy (tr->attributes, t->attrs, vec_len (t->attrs)); + + DBG_PLD + ("transform type %U transform_id %u last_or_more %u attr_size %u%s%U", + format_ikev2_transform_type, tr->transform_type, t->transform_id, + tr->last_or_more, vec_len (t->attrs), + vec_len (t->attrs) ? " attrs " : "", format_hex_bytes, + tr->attributes, vec_len (t->attrs)); + } + + prop->proposal_len = + clib_host_to_net_u16 (vec_len (tr_data) + vec_len (pr_data)); + ikev2_payload_add_data (c, pr_data); + ikev2_payload_add_data (c, tr_data); + vec_free (pr_data); + vec_free (tr_data); + } +} + +void +ikev2_payload_add_ke (ikev2_payload_chain_t * c, u16 dh_group, u8 * dh_data) +{ + ike_ke_payload_header_t *ke; + ke = (ike_ke_payload_header_t *) ikev2_payload_add_hdr (c, IKEV2_PAYLOAD_KE, + sizeof (*ke)); + + ke->dh_group = clib_host_to_net_u16 (dh_group); + ikev2_payload_add_data (c, dh_data); +} + +void +ikev2_payload_add_nonce (ikev2_payload_chain_t * c, u8 * nonce) +{ + ikev2_payload_add_hdr (c, IKEV2_PAYLOAD_NONCE, + sizeof (ike_payload_header_t)); + ikev2_payload_add_data (c, nonce); +} + +void +ikev2_payload_add_id (ikev2_payload_chain_t * c, ikev2_id_t * id, u8 type) +{ + ike_id_payload_header_t *idp; + idp = + (ike_id_payload_header_t *) ikev2_payload_add_hdr (c, type, + sizeof (*idp)); + + idp->id_type = id->type; + ikev2_payload_add_data (c, id->data); +} + +void +ikev2_payload_add_delete (ikev2_payload_chain_t * c, ikev2_delete_t * d) +{ + ike_delete_payload_header_t *dp; + u16 num_of_spi = vec_len (d); + ikev2_delete_t *d2; + dp = + (ike_delete_payload_header_t *) ikev2_payload_add_hdr (c, + IKEV2_PAYLOAD_DELETE, + sizeof (*dp)); + + if (d[0].protocol_id == IKEV2_PROTOCOL_IKE) + { + dp->protocol_id = 1; + } + else + { + dp->protocol_id = d[0].protocol_id; + dp->spi_size = 4; + dp->num_of_spi = clib_host_to_net_u16 (num_of_spi); + vec_foreach (d2, d) + { + u8 *data = vec_new (u8, 4); + u32 spi = clib_host_to_net_u32 (d2->spi); + clib_memcpy (data, &spi, 4); + ikev2_payload_add_data (c, data); + vec_free (data); + } + } +} + +void +ikev2_payload_add_auth (ikev2_payload_chain_t * c, ikev2_auth_t * auth) +{ + ike_auth_payload_header_t *ap; + ap = + (ike_auth_payload_header_t *) ikev2_payload_add_hdr (c, + IKEV2_PAYLOAD_AUTH, + sizeof (*ap)); + + ap->auth_method = auth->method; + ikev2_payload_add_data (c, auth->data); +} + +void +ikev2_payload_add_ts (ikev2_payload_chain_t * c, ikev2_ts_t * ts, u8 type) +{ + ike_ts_payload_header_t *tsh; + ikev2_ts_t *ts2; + u8 *data = 0, *tmp; + + tsh = + (ike_ts_payload_header_t *) ikev2_payload_add_hdr (c, type, + sizeof (*tsh)); + tsh->num_ts = vec_len (ts); + + vec_foreach (ts2, ts) + { + ASSERT (ts2->ts_type == 7); /*TS_IPV4_ADDR_RANGE */ + ikev2_ts_payload_entry_t *entry; + vec_add2 (data, tmp, sizeof (*entry)); + entry = (ikev2_ts_payload_entry_t *) tmp; + entry->ts_type = ts2->ts_type; + entry->protocol_id = ts2->protocol_id; + entry->selector_len = clib_host_to_net_u16 (16); + entry->start_port = clib_host_to_net_u16 (ts2->start_port); + entry->end_port = clib_host_to_net_u16 (ts2->end_port); + entry->start_addr.as_u32 = ts2->start_addr.as_u32; + entry->end_addr.as_u32 = ts2->end_addr.as_u32; + } + + ikev2_payload_add_data (c, data); + vec_free (data); +} + +void +ikev2_payload_chain_add_padding (ikev2_payload_chain_t * c, int bs) +{ + u8 *tmp __attribute__ ((unused)); + u8 pad_len = (vec_len (c->data) / bs + 1) * bs - vec_len (c->data); + vec_add2 (c->data, tmp, pad_len); + c->data[vec_len (c->data) - 1] = pad_len - 1; +} + +ikev2_sa_proposal_t * +ikev2_parse_sa_payload (ike_payload_header_t * ikep) +{ + ikev2_sa_proposal_t *v = 0; + ikev2_sa_proposal_t *proposal; + ikev2_sa_transform_t *transform; + + u32 plen = clib_net_to_host_u16 (ikep->length); + + ike_sa_proposal_data_t *sap; + int proposal_ptr = 0; + + do + { + sap = (ike_sa_proposal_data_t *) & ikep->payload[proposal_ptr]; + int i; + int transform_ptr; + + DBG_PLD ("proposal num %u len %u last_or_more %u id %u " + "spi_size %u num_transforms %u", + sap->proposal_num, clib_net_to_host_u16 (sap->proposal_len), + sap->last_or_more, sap->protocol_id, sap->spi_size, + sap->num_transforms); + + /* IKE proposal should not have SPI */ + if (sap->protocol_id == IKEV2_PROTOCOL_IKE && sap->spi_size != 0) + goto data_corrupted; + + /* IKE proposal should not have SPI */ + if (sap->protocol_id == IKEV2_PROTOCOL_ESP && sap->spi_size != 4) + goto data_corrupted; + + transform_ptr = proposal_ptr + sizeof (*sap) + sap->spi_size; + + vec_add2 (v, proposal, 1); + proposal->proposal_num = sap->proposal_num; + proposal->protocol_id = sap->protocol_id; + + if (sap->spi_size == 4) + { + proposal->spi = clib_net_to_host_u32 (sap->spi[0]); + } + + for (i = 0; i < sap->num_transforms; i++) + { + ike_sa_transform_data_t *tr = + (ike_sa_transform_data_t *) & ikep->payload[transform_ptr]; + u16 tlen = clib_net_to_host_u16 (tr->transform_len); + + if (tlen < sizeof (*tr)) + goto data_corrupted; + + vec_add2 (proposal->transforms, transform, 1); + + transform->type = tr->transform_type; + transform->transform_id = clib_net_to_host_u16 (tr->transform_id); + if (tlen > sizeof (*tr)) + vec_add (transform->attrs, tr->attributes, tlen - sizeof (*tr)); + + DBG_PLD + ("transform num %u len %u last_or_more %u type %U id %u%s%U", i, + tlen, tr->last_or_more, format_ikev2_sa_transform, transform, + clib_net_to_host_u16 (tr->transform_id), + tlen > sizeof (*tr) ? " attrs " : "", format_hex_bytes, + tr->attributes, tlen - sizeof (*tr)); + + transform_ptr += tlen; + } + + proposal_ptr += clib_net_to_host_u16 (sap->proposal_len); + } + while (proposal_ptr < (plen - sizeof (*ikep)) && sap->last_or_more == 2); + + /* data validation */ + if (proposal_ptr != (plen - sizeof (*ikep)) || sap->last_or_more) + goto data_corrupted; + + return v; + +data_corrupted: + DBG_PLD ("SA payload data corrupted"); + ikev2_sa_free_proposal_vector (&v); + return 0; +} + +ikev2_ts_t * +ikev2_parse_ts_payload (ike_payload_header_t * ikep) +{ + ike_ts_payload_header_t *tsp = (ike_ts_payload_header_t *) ikep; + ikev2_ts_t *r = 0, *ts; + u8 i; + + for (i = 0; i < tsp->num_ts; i++) + { + if (tsp->ts[i].ts_type != 7) /* TS_IPV4_ADDR_RANGE */ + { + DBG_PLD ("unsupported TS type received (%u)", tsp->ts[i].ts_type); + continue; + } + + vec_add2 (r, ts, 1); + ts->ts_type = tsp->ts[i].ts_type; + ts->protocol_id = tsp->ts[i].protocol_id; + ts->start_port = tsp->ts[i].start_port; + ts->end_port = tsp->ts[i].end_port; + ts->start_addr.as_u32 = tsp->ts[i].start_addr.as_u32; + ts->end_addr.as_u32 = tsp->ts[i].end_addr.as_u32; + } + return r; +} + +ikev2_notify_t * +ikev2_parse_notify_payload (ike_payload_header_t * ikep) +{ + ike_notify_payload_header_t *n = (ike_notify_payload_header_t *) ikep; + u32 plen = clib_net_to_host_u16 (ikep->length); + ikev2_notify_t *r = 0; + u32 spi; + + DBG_PLD ("msg_type %U len %u%s%U", + format_ikev2_notify_msg_type, clib_net_to_host_u16 (n->msg_type), + plen, plen > sizeof (*n) ? " data " : "", + format_hex_bytes, n->payload, plen - sizeof (*n)); + + r = vec_new (ikev2_notify_t, 1); + r->msg_type = clib_net_to_host_u16 (n->msg_type); + r->protocol_id = n->protocol_id; + + if (n->spi_size == 4) + { + clib_memcpy (&spi, n->payload, n->spi_size); + r->spi = clib_net_to_host_u32 (spi); + DBG_PLD ("spi %lx", r->spi); + } + else if (n->spi_size == 0) + { + r->spi = 0; + } + else + { + clib_warning ("invalid SPI Size %d", n->spi_size); + } + + if (plen > (sizeof (*n) + n->spi_size)) + { + vec_add (r->data, n->payload + n->spi_size, + plen - sizeof (*n) - n->spi_size); + } + + return r; +} + +void +ikev2_parse_vendor_payload (ike_payload_header_t * ikep) +{ + u32 plen = clib_net_to_host_u16 (ikep->length); + int i; + int is_string = 1; + + for (i = 0; i < plen - 4; i++) + if (!isprint (ikep->payload[i])) + is_string = 0; + + DBG_PLD ("len %u data %s:%U", + plen, + is_string ? "string" : "hex", + is_string ? format_ascii_bytes : format_hex_bytes, + ikep->payload, plen - sizeof (*ikep)); +} + +ikev2_delete_t * +ikev2_parse_delete_payload (ike_payload_header_t * ikep) +{ + ike_delete_payload_header_t *d = (ike_delete_payload_header_t *) ikep; + u32 plen = clib_net_to_host_u16 (ikep->length); + ikev2_delete_t *r = 0, *del; + u16 num_of_spi = clib_net_to_host_u16 (d->num_of_spi); + u16 i = 0; + + DBG_PLD ("protocol_id %u spi_size %u num_of_spi %u len %u%s%U", + d->protocol_id, d->spi_size, num_of_spi, + plen, plen > sizeof (d) ? " data " : "", + format_hex_bytes, d->spi, plen - sizeof (*d)); + + if (d->protocol_id == IKEV2_PROTOCOL_IKE) + { + r = vec_new (ikev2_delete_t, 1); + r->protocol_id = 1; + } + else + { + r = vec_new (ikev2_delete_t, num_of_spi); + vec_foreach (del, r) + { + del->protocol_id = d->protocol_id; + del->spi = clib_net_to_host_u32 (d->spi[i++]); + } + } + + return r; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ikev2_priv.h b/src/vnet/ipsec/ikev2_priv.h new file mode 100644 index 00000000000..9f67ad2ae6f --- /dev/null +++ b/src/vnet/ipsec/ikev2_priv.h @@ -0,0 +1,321 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef __included_ikev2_priv_h__ +#define __included_ikev2_priv_h__ + +#include +#include +#include + +#include + +#include +#include +#include + +#include +#include +#include +#include + +#define IKEV2_DEBUG_PAYLOAD 1 + +#if IKEV2_DEBUG_PAYLOAD == 1 +#define DBG_PLD(my_args...) clib_warning(my_args) +#else +#define DBG_PLD(my_args...) +#endif + +typedef enum +{ + IKEV2_STATE_UNKNOWN, + IKEV2_STATE_SA_INIT, + IKEV2_STATE_DELETED, + IKEV2_STATE_AUTH_FAILED, + IKEV2_STATE_AUTHENTICATED, + IKEV2_STATE_NOTIFY_AND_DELETE, + IKEV2_STATE_TS_UNACCEPTABLE, + IKEV2_STATE_NO_PROPOSAL_CHOSEN, +} ikev2_state_t; + +typedef struct +{ + ikev2_auth_method_t method:8; + u8 *data; + u8 hex; /* hex encoding of the shared secret */ + EVP_PKEY *key; +} ikev2_auth_t; + +typedef enum +{ + IKEV2_DH_GROUP_MODP = 0, + IKEV2_DH_GROUP_ECP = 1, +} ikev2_dh_group_t; + +typedef struct +{ + ikev2_transform_type_t type; + union + { + u16 transform_id; + ikev2_transform_encr_type_t encr_type:16; + ikev2_transform_prf_type_t prf_type:16; + ikev2_transform_integ_type_t integ_type:16; + ikev2_transform_dh_type_t dh_type:16; + ikev2_transform_esn_type_t esn_type:16; + }; + u8 *attrs; + u16 key_len; + u16 key_trunc; + u16 block_size; + u8 dh_group; + int nid; + const char *dh_p; + const char *dh_g; + const void *md; + const void *cipher; +} ikev2_sa_transform_t; + +typedef struct +{ + u8 proposal_num; + ikev2_protocol_id_t protocol_id:8; + u32 spi; + ikev2_sa_transform_t *transforms; +} ikev2_sa_proposal_t; + +typedef struct +{ + u8 ts_type; + u8 protocol_id; + u16 selector_len; + u16 start_port; + u16 end_port; + ip4_address_t start_addr; + ip4_address_t end_addr; +} ikev2_ts_t; + +typedef struct +{ + ikev2_id_type_t type:8; + u8 *data; +} ikev2_id_t; + +typedef struct +{ + /* sa proposals vectors */ + ikev2_sa_proposal_t *i_proposals; + ikev2_sa_proposal_t *r_proposals; + + /* Traffic Selectors */ + ikev2_ts_t *tsi; + ikev2_ts_t *tsr; + + /* keys */ + u8 *sk_ai; + u8 *sk_ar; + u8 *sk_ei; + u8 *sk_er; +} ikev2_child_sa_t; + +typedef struct +{ + u8 protocol_id; + u32 spi; /*for ESP and AH SPI size is 4, for IKE size is 0 */ +} ikev2_delete_t; + +typedef struct +{ + u8 protocol_id; + u32 spi; + ikev2_sa_proposal_t *i_proposal; + ikev2_sa_proposal_t *r_proposal; + ikev2_ts_t *tsi; + ikev2_ts_t *tsr; +} ikev2_rekey_t; + +typedef struct +{ + u16 msg_type; + u8 protocol_id; + u32 spi; + u8 *data; +} ikev2_notify_t; + + +typedef struct +{ + ikev2_state_t state; + u8 unsupported_cp; + u8 initial_contact; + ip4_address_t iaddr; + ip4_address_t raddr; + u64 ispi; + u64 rspi; + u8 *i_nonce; + u8 *r_nonce; + + /* DH data */ + u16 dh_group; + u8 *dh_shared_key; + u8 *i_dh_data; + u8 *r_dh_data; + + /* sa proposals vectors */ + ikev2_sa_proposal_t *i_proposals; + ikev2_sa_proposal_t *r_proposals; + + /* keys */ + u8 *sk_d; + u8 *sk_ai; + u8 *sk_ar; + u8 *sk_ei; + u8 *sk_er; + u8 *sk_pi; + u8 *sk_pr; + + /* auth */ + ikev2_auth_t i_auth; + ikev2_auth_t r_auth; + + /* ID */ + ikev2_id_t i_id; + ikev2_id_t r_id; + + /* pending deletes */ + ikev2_delete_t *del; + + /* pending rekeyings */ + ikev2_rekey_t *rekey; + + /* packet data */ + u8 *last_sa_init_req_packet_data; + u8 *last_sa_init_res_packet_data; + + /* retransmit */ + u32 last_msg_id; + u8 *last_res_packet_data; + + ikev2_child_sa_t *childs; +} ikev2_sa_t; + +typedef struct +{ + u8 *name; + u8 is_enabled; + + ikev2_auth_t auth; + ikev2_id_t loc_id; + ikev2_id_t rem_id; + ikev2_ts_t loc_ts; + ikev2_ts_t rem_ts; +} ikev2_profile_t; + +typedef struct +{ + /* pool of IKEv2 Security Associations */ + ikev2_sa_t *sas; + + /* hash */ + uword *sa_by_rspi; +} ikev2_main_per_thread_data_t; + +typedef struct +{ + /* pool of IKEv2 profiles */ + ikev2_profile_t *profiles; + + /* vector of supported transform types */ + ikev2_sa_transform_t *supported_transforms; + + /* hash */ + mhash_t profile_index_by_name; + + /* local private key */ + EVP_PKEY *pkey; + + /* convenience */ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; + + ikev2_main_per_thread_data_t *per_thread_data; + +} ikev2_main_t; + +ikev2_main_t ikev2_main; + +void ikev2_sa_free_proposal_vector (ikev2_sa_proposal_t ** v); +ikev2_sa_transform_t *ikev2_sa_get_td_for_type (ikev2_sa_proposal_t * p, + ikev2_transform_type_t type); + +/* ikev2_crypto.c */ +v8 *ikev2_calc_prf (ikev2_sa_transform_t * tr, v8 * key, v8 * data); +u8 *ikev2_calc_prfplus (ikev2_sa_transform_t * tr, u8 * key, u8 * seed, + int len); +v8 *ikev2_calc_integr (ikev2_sa_transform_t * tr, v8 * key, u8 * data, + int len); +v8 *ikev2_decrypt_data (ikev2_sa_t * sa, u8 * data, int len); +int ikev2_encrypt_data (ikev2_sa_t * sa, v8 * src, u8 * dst); +void ikev2_generate_dh (ikev2_sa_t * sa, ikev2_sa_transform_t * t); +int ikev2_verify_sign (EVP_PKEY * pkey, u8 * sigbuf, u8 * data); +u8 *ikev2_calc_sign (EVP_PKEY * pkey, u8 * data); +EVP_PKEY *ikev2_load_cert_file (u8 * file); +EVP_PKEY *ikev2_load_key_file (u8 * file); +void ikev2_crypto_init (ikev2_main_t * km); + +/* ikev2_payload.c */ +typedef struct +{ + u8 first_payload_type; + u16 last_hdr_off; + u8 *data; +} ikev2_payload_chain_t; + +#define ikev2_payload_new_chain(V) vec_validate (V, 0) +#define ikev2_payload_destroy_chain(V) do { \ + vec_free((V)->data); \ + vec_free(V); \ +} while (0) + +void ikev2_payload_add_notify (ikev2_payload_chain_t * c, u16 msg_type, + u8 * data); +void ikev2_payload_add_sa (ikev2_payload_chain_t * c, + ikev2_sa_proposal_t * proposals); +void ikev2_payload_add_ke (ikev2_payload_chain_t * c, u16 dh_group, + u8 * dh_data); +void ikev2_payload_add_nonce (ikev2_payload_chain_t * c, u8 * nonce); +void ikev2_payload_add_id (ikev2_payload_chain_t * c, ikev2_id_t * id, + u8 type); +void ikev2_payload_add_auth (ikev2_payload_chain_t * c, ikev2_auth_t * auth); +void ikev2_payload_add_ts (ikev2_payload_chain_t * c, ikev2_ts_t * ts, + u8 type); +void ikev2_payload_add_delete (ikev2_payload_chain_t * c, ikev2_delete_t * d); +void ikev2_payload_chain_add_padding (ikev2_payload_chain_t * c, int bs); +void ikev2_parse_vendor_payload (ike_payload_header_t * ikep); +ikev2_sa_proposal_t *ikev2_parse_sa_payload (ike_payload_header_t * ikep); +ikev2_ts_t *ikev2_parse_ts_payload (ike_payload_header_t * ikep); +ikev2_delete_t *ikev2_parse_delete_payload (ike_payload_header_t * ikep); +ikev2_notify_t *ikev2_parse_notify_payload (ike_payload_header_t * ikep); + +#endif /* __included_ikev2_priv_h__ */ + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ipsec.api b/src/vnet/ipsec/ipsec.api new file mode 100644 index 00000000000..178bb757168 --- /dev/null +++ b/src/vnet/ipsec/ipsec.api @@ -0,0 +1,457 @@ +/* + * Copyright (c) 2015-2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +/** \brief IPsec: Add/delete Security Policy Database + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add SPD if non-zero, else delete + @param spd_id - SPD instance id (control plane allocated) +*/ + +define ipsec_spd_add_del +{ + u32 client_index; + u32 context; + u8 is_add; + u32 spd_id; +}; + +/** \brief Reply for IPsec: Add/delete Security Policy Database entry + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ + +define ipsec_spd_add_del_reply +{ + u32 context; + i32 retval; +}; + +/** \brief IPsec: Add/delete SPD from interface + + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add security mode if non-zero, else delete + @param sw_if_index - index of the interface + @param spd_id - SPD instance id to use for lookups +*/ + + +define ipsec_interface_add_del_spd +{ + u32 client_index; + u32 context; + + u8 is_add; + u32 sw_if_index; + u32 spd_id; +}; + +/** \brief Reply for IPsec: Add/delete SPD from interface + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ + +define ipsec_interface_add_del_spd_reply +{ + u32 context; + i32 retval; +}; + +/** \brief IPsec: Add/delete Security Policy Database entry + + See RFC 4301, 4.4.1.1 on how to match packet to selectors + + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add SPD if non-zero, else delete + @param spd_id - SPD instance id (control plane allocated) + @param priority - priority of SPD entry (non-unique value). Used to order SPD matching - higher priorities match before lower + @param is_outbound - entry applies to outbound traffic if non-zero, otherwise applies to inbound traffic + @param is_ipv6 - remote/local address are IPv6 if non-zero, else IPv4 + @param remote_address_start - start of remote address range to match + @param remote_address_stop - end of remote address range to match + @param local_address_start - start of local address range to match + @param local_address_stop - end of local address range to match + @param protocol - protocol type to match [0 means any] + @param remote_port_start - start of remote port range to match ... + @param remote_port_stop - end of remote port range to match [0 to 65535 means ANY, 65535 to 0 means OPAQUE] + @param local_port_start - start of local port range to match ... + @param local_port_stop - end of remote port range to match [0 to 65535 means ANY, 65535 to 0 means OPAQUE] + @param policy - 0 = bypass (no IPsec processing), 1 = discard (discard packet with ICMP processing), 2 = resolve (send request to control plane for SA resolving, and discard without ICMP processing), 3 = protect (apply IPsec policy using following parameters) + @param sa_id - SAD instance id (control plane allocated) + +*/ + +define ipsec_spd_add_del_entry +{ + u32 client_index; + u32 context; + u8 is_add; + + u32 spd_id; + i32 priority; + u8 is_outbound; + + // Selector + u8 is_ipv6; + u8 is_ip_any; + u8 remote_address_start[16]; + u8 remote_address_stop[16]; + u8 local_address_start[16]; + u8 local_address_stop[16]; + + u8 protocol; + + u16 remote_port_start; + u16 remote_port_stop; + u16 local_port_start; + u16 local_port_stop; + + // Policy + u8 policy; + u32 sa_id; +}; + +/** \brief Reply for IPsec: Add/delete Security Policy Database entry + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ + +define ipsec_spd_add_del_entry_reply +{ + u32 context; + i32 retval; +}; + +/** \brief IPsec: Add/delete Security Association Database entry + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param is_add - add SAD entry if non-zero, else delete + + @param sad_id - sad id + + @param spi - security parameter index + + @param protocol - 0 = AH, 1 = ESP + + @param crypto_algorithm - 0 = Null, 1 = AES-CBC-128, 2 = AES-CBC-192, 3 = AES-CBC-256, 4 = 3DES-CBC + @param crypto_key_length - length of crypto_key in bytes + @param crypto_key - crypto keying material + + @param integrity_algorithm - 0 = None, 1 = MD5-96, 2 = SHA1-96, 3 = SHA-256, 4 = SHA-384, 5=SHA-512 + @param integrity_key_length - length of integrity_key in bytes + @param integrity_key - integrity keying material + + @param use_extended_sequence_number - use ESN when non-zero + + @param is_tunnel - IPsec tunnel mode if non-zero, else transport mode + @param is_tunnel_ipv6 - IPsec tunnel mode is IPv6 if non-zero, else IPv4 tunnel only valid if is_tunnel is non-zero + @param tunnel_src_address - IPsec tunnel source address IPv6 if is_tunnel_ipv6 is non-zero, else IPv4. Only valid if is_tunnel is non-zero + @param tunnel_dst_address - IPsec tunnel destination address IPv6 if is_tunnel_ipv6 is non-zero, else IPv4. Only valid if is_tunnel is non-zero + + To be added: + Anti-replay + IPsec tunnel address copy mode (to support GDOI) + */ + +define ipsec_sad_add_del_entry +{ + u32 client_index; + u32 context; + u8 is_add; + + u32 sad_id; + + u32 spi; + + u8 protocol; + + u8 crypto_algorithm; + u8 crypto_key_length; + u8 crypto_key[128]; + + u8 integrity_algorithm; + u8 integrity_key_length; + u8 integrity_key[128]; + + u8 use_extended_sequence_number; + + u8 is_tunnel; + u8 is_tunnel_ipv6; + u8 tunnel_src_address[16]; + u8 tunnel_dst_address[16]; +}; + +/** \brief Reply for IPsec: Add/delete Security Association Database entry + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ + +define ipsec_sad_add_del_entry_reply +{ + u32 context; + i32 retval; +}; + +/** \brief IPsec: Update Security Association keys + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param sa_id - sa id + + @param crypto_key_length - length of crypto_key in bytes + @param crypto_key - crypto keying material + + @param integrity_key_length - length of integrity_key in bytes + @param integrity_key - integrity keying material +*/ + +define ipsec_sa_set_key +{ + u32 client_index; + u32 context; + + u32 sa_id; + + u8 crypto_key_length; + u8 crypto_key[128]; + + u8 integrity_key_length; + u8 integrity_key[128]; +}; + +/** \brief Reply for IPsec: Update Security Association keys + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ + +define ipsec_sa_set_key_reply +{ + u32 context; + i32 retval; +}; + +/** \brief IKEv2: Add/delete profile + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + @param is_add - Add IKEv2 profile if non-zero, else delete +*/ +define ikev2_profile_add_del +{ + u32 client_index; + u32 context; + + u8 name[64]; + u8 is_add; +}; + +/** \brief Reply for IKEv2: Add/delete profile + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define ikev2_profile_add_del_reply +{ + u32 context; + i32 retval; +}; + +/** \brief IKEv2: Set IKEv2 profile authentication method + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + @param auth_method - IKEv2 authentication method (shared-key-mic/rsa-sig) + @param is_hex - Authentication data in hex format if non-zero, else string + @param data_len - Authentication data length + @param data - Authentication data (for rsa-sig cert file path) +*/ +define ikev2_profile_set_auth +{ + u32 client_index; + u32 context; + + u8 name[64]; + u8 auth_method; + u8 is_hex; + u32 data_len; + u8 data[0]; +}; + +/** \brief Reply for IKEv2: Set IKEv2 profile authentication method + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define ikev2_profile_set_auth_reply +{ + u32 context; + i32 retval; +}; + +/** \brief IKEv2: Set IKEv2 profile local/remote identification + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + @param is_local - Identification is local if non-zero, else remote + @param id_type - Identification type + @param data_len - Identification data length + @param data - Identification data +*/ +define ikev2_profile_set_id +{ + u32 client_index; + u32 context; + + u8 name[64]; + u8 is_local; + u8 id_type; + u32 data_len; + u8 data[0]; +}; + +/** \brief Reply for IKEv2: + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define ikev2_profile_set_id_reply +{ + u32 context; + i32 retval; +}; + +/** \brief IKEv2: Set IKEv2 profile traffic selector parameters + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param name - IKEv2 profile name + @param is_local - Traffic selector is local if non-zero, else remote + @param proto - Traffic selector IP protocol (if zero not relevant) + @param start_port - The smallest port number allowed by traffic selector + @param end_port - The largest port number allowed by traffic selector + @param start_addr - The smallest address included in traffic selector + @param end_addr - The largest address included in traffic selector +*/ +define ikev2_profile_set_ts +{ + u32 client_index; + u32 context; + + u8 name[64]; + u8 is_local; + u8 proto; + u16 start_port; + u16 end_port; + u32 start_addr; + u32 end_addr; +}; + +/** \brief Reply for IKEv2: Set IKEv2 profile traffic selector parameters + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define ikev2_profile_set_ts_reply +{ + u32 context; + i32 retval; +}; + +/** \brief IKEv2: Set IKEv2 local RSA private key + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + + @param key_file - Key file absolute path +*/ +define ikev2_set_local_key +{ + u32 client_index; + u32 context; + + u8 key_file[256]; +}; + +/** \brief Reply for IKEv2: Set IKEv2 local key + @param context - returned sender context, to match reply w/ request + @param retval - return code +*/ +define ikev2_set_local_key_reply +{ + u32 context; + i32 retval; +}; + +/** \brief Dump ipsec policy database data + @param client_index - opaque cookie to identify the sender + @param context - sender context, to match reply w/ request + @param spd_id - SPD instance id + @param sa_id - SA id, optional, set to ~0 to see all policies in SPD +*/ +define ipsec_spd_dump { + u32 client_index; + u32 context; + u32 spd_id; + u32 sa_id; +}; + +/** \brief IPsec policy database response + @param context - sender context which was passed in the request + @param spd_id - SPD instance id + @param priority - numeric value to control policy evaluation order + @param is_outbound - [1|0] to indicate if direction is [out|in]bound + @param is_ipv6 - [1|0] to indicate if address family is ipv[6|4] + @param local_start_addr - first address in local traffic selector range + @param local_stop_addr - last address in local traffic selector range + @param local_start_port - first port in local traffic selector range + @param local_stop_port - last port in local traffic selector range + @param remote_start_addr - first address in remote traffic selector range + @param remote_stop_addr - last address in remote traffic selector range + @param remote_start_port - first port in remote traffic selector range + @param remote_stop_port - last port in remote traffic selector range + @param protocol - traffic selector protocol + @param policy - policy action + @param sa_id - SA id + @param bytes - byte count of packets matching this policy + @param packets - count of packets matching this policy +*/ + +define ipsec_spd_details { + u32 context; + u32 spd_id; + i32 priority; + u8 is_outbound; + u8 is_ipv6; + u8 local_start_addr[16]; + u8 local_stop_addr[16]; + u16 local_start_port; + u16 local_stop_port; + u8 remote_start_addr[16]; + u8 remote_stop_addr[16]; + u16 remote_start_port; + u16 remote_stop_port; + u8 protocol; + u8 policy; + u32 sa_id; + u64 bytes; + u64 packets; +}; + +/* + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ + \ No newline at end of file diff --git a/src/vnet/ipsec/ipsec.c b/src/vnet/ipsec/ipsec.c new file mode 100644 index 00000000000..ee85c402e86 --- /dev/null +++ b/src/vnet/ipsec/ipsec.c @@ -0,0 +1,581 @@ +/* + * decap.c : IPSec tunnel support + * + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include +#include + +#include +#include + +#if DPDK_CRYPTO==1 +#include +#define ESP_NODE "dpdk-esp-encrypt" +#else +#include +#define ESP_NODE "esp-encrypt" +#endif + +#if DPDK_CRYPTO==0 +/* dummy function */ +static int +add_del_sa_sess (u32 sa_index, u8 is_add) +{ + return 0; +} +#endif + +u32 +ipsec_get_sa_index_by_sa_id (u32 sa_id) +{ + ipsec_main_t *im = &ipsec_main; + uword *p = hash_get (im->sa_index_by_sa_id, sa_id); + if (!p) + return ~0; + + return p[0]; +} + +int +ipsec_set_interface_spd (vlib_main_t * vm, u32 sw_if_index, u32 spd_id, + int is_add) +{ + ipsec_main_t *im = &ipsec_main; + ip4_ipsec_config_t config; + + u32 spd_index; + uword *p; + + p = hash_get (im->spd_index_by_spd_id, spd_id); + if (!p) + return VNET_API_ERROR_SYSCALL_ERROR_1; /* no such spd-id */ + + spd_index = p[0]; + + p = hash_get (im->spd_index_by_sw_if_index, sw_if_index); + if (p && is_add) + return VNET_API_ERROR_SYSCALL_ERROR_1; /* spd already assigned */ + + if (is_add) + { + hash_set (im->spd_index_by_sw_if_index, sw_if_index, spd_index); + } + else + { + hash_unset (im->spd_index_by_sw_if_index, sw_if_index); + } + + clib_warning ("sw_if_index %u spd_id %u spd_index %u", + sw_if_index, spd_id, spd_index); + + /* enable IPsec on TX */ + vnet_feature_enable_disable ("ip4-output", "ipsec-output-ip4", sw_if_index, + is_add, 0, 0); + vnet_feature_enable_disable ("ip6-output", "ipsec-output-ip6", sw_if_index, + is_add, 0, 0); + + /* enable IPsec on RX */ + vnet_feature_enable_disable ("ip4-unicast", "ipsec-input-ip4", sw_if_index, + is_add, &config, sizeof (config)); + vnet_feature_enable_disable ("ip6-unicast", "ipsec-input-ip6", sw_if_index, + is_add, &config, sizeof (config)); + + return 0; +} + +int +ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add) +{ + ipsec_main_t *im = &ipsec_main; + ipsec_spd_t *spd = 0; + uword *p; + u32 spd_index, k, v; + + p = hash_get (im->spd_index_by_spd_id, spd_id); + if (p && is_add) + return VNET_API_ERROR_INVALID_VALUE; + if (!p && !is_add) + return VNET_API_ERROR_INVALID_VALUE; + + if (!is_add) /* delete */ + { + spd_index = p[0]; + spd = pool_elt_at_index (im->spds, spd_index); + if (!spd) + return VNET_API_ERROR_INVALID_VALUE; + /* *INDENT-OFF* */ + hash_foreach (k, v, im->spd_index_by_sw_if_index, ({ + if (v == spd_index) + ipsec_set_interface_spd(vm, k, spd_id, 0); + })); + /* *INDENT-ON* */ + hash_unset (im->spd_index_by_spd_id, spd_id); + pool_free (spd->policies); + vec_free (spd->ipv4_outbound_policies); + vec_free (spd->ipv6_outbound_policies); + vec_free (spd->ipv4_inbound_protect_policy_indices); + vec_free (spd->ipv4_inbound_policy_discard_and_bypass_indices); + pool_put (im->spds, spd); + } + else /* create new SPD */ + { + pool_get (im->spds, spd); + memset (spd, 0, sizeof (*spd)); + spd_index = spd - im->spds; + spd->id = spd_id; + hash_set (im->spd_index_by_spd_id, spd_id, spd_index); + } + return 0; +} + +static int +ipsec_spd_entry_sort (void *a1, void *a2) +{ + ipsec_main_t *im = &ipsec_main; + u32 *id1 = a1; + u32 *id2 = a2; + ipsec_spd_t *spd; + ipsec_policy_t *p1, *p2; + + /* *INDENT-OFF* */ + pool_foreach (spd, im->spds, ({ + p1 = pool_elt_at_index(spd->policies, *id1); + p2 = pool_elt_at_index(spd->policies, *id2); + if (p1 && p2) + return p2->priority - p1->priority; + })); + /* *INDENT-ON* */ + + return 0; +} + +int +ipsec_add_del_policy (vlib_main_t * vm, ipsec_policy_t * policy, int is_add) +{ + ipsec_main_t *im = &ipsec_main; + ipsec_spd_t *spd = 0; + ipsec_policy_t *vp; + uword *p; + u32 spd_index; + + clib_warning ("policy-id %u priority %d is_outbound %u", policy->id, + policy->priority, policy->is_outbound); + + if (policy->policy == IPSEC_POLICY_ACTION_PROTECT) + { + p = hash_get (im->sa_index_by_sa_id, policy->sa_id); + if (!p) + return VNET_API_ERROR_SYSCALL_ERROR_1; + policy->sa_index = p[0]; + } + + p = hash_get (im->spd_index_by_spd_id, policy->id); + + if (!p) + return VNET_API_ERROR_SYSCALL_ERROR_1; + + spd_index = p[0]; + spd = pool_elt_at_index (im->spds, spd_index); + if (!spd) + return VNET_API_ERROR_SYSCALL_ERROR_1; + + if (is_add) + { + u32 policy_index; + + pool_get (spd->policies, vp); + clib_memcpy (vp, policy, sizeof (*vp)); + policy_index = vp - spd->policies; + + if (policy->is_outbound) + { + if (policy->is_ipv6) + { + vec_add1 (spd->ipv6_outbound_policies, policy_index); + clib_memcpy (vp, policy, sizeof (ipsec_policy_t)); + vec_sort_with_function (spd->ipv6_outbound_policies, + ipsec_spd_entry_sort); + } + else + { + vec_add1 (spd->ipv4_outbound_policies, policy_index); + clib_memcpy (vp, policy, sizeof (ipsec_policy_t)); + vec_sort_with_function (spd->ipv4_outbound_policies, + ipsec_spd_entry_sort); + } + } + else + { + if (policy->is_ipv6) + { + if (policy->policy == IPSEC_POLICY_ACTION_PROTECT) + { + vec_add1 (spd->ipv6_inbound_protect_policy_indices, + policy_index); + clib_memcpy (vp, policy, sizeof (ipsec_policy_t)); + vec_sort_with_function + (spd->ipv6_inbound_protect_policy_indices, + ipsec_spd_entry_sort); + } + else + { + vec_add1 + (spd->ipv6_inbound_policy_discard_and_bypass_indices, + policy_index); + clib_memcpy (vp, policy, sizeof (ipsec_policy_t)); + vec_sort_with_function + (spd->ipv6_inbound_policy_discard_and_bypass_indices, + ipsec_spd_entry_sort); + } + } + else + { + if (policy->policy == IPSEC_POLICY_ACTION_PROTECT) + { + vec_add1 (spd->ipv4_inbound_protect_policy_indices, + policy_index); + clib_memcpy (vp, policy, sizeof (ipsec_policy_t)); + vec_sort_with_function + (spd->ipv4_inbound_protect_policy_indices, + ipsec_spd_entry_sort); + } + else + { + vec_add1 + (spd->ipv4_inbound_policy_discard_and_bypass_indices, + policy_index); + clib_memcpy (vp, policy, sizeof (ipsec_policy_t)); + vec_sort_with_function + (spd->ipv4_inbound_policy_discard_and_bypass_indices, + ipsec_spd_entry_sort); + } + } + } + + } + else + { + u32 i, j; + /* *INDENT-OFF* */ + pool_foreach_index(i, spd->policies, ({ + vp = pool_elt_at_index(spd->policies, i); + if (vp->priority != policy->priority) + continue; + if (vp->is_outbound != policy->is_outbound) + continue; + if (vp->policy != policy->policy) + continue; + if (vp->sa_id != policy->sa_id) + continue; + if (vp->protocol != policy->protocol) + continue; + if (vp->lport.start != policy->lport.start) + continue; + if (vp->lport.stop != policy->lport.stop) + continue; + if (vp->rport.start != policy->rport.start) + continue; + if (vp->rport.stop != policy->rport.stop) + continue; + if (vp->is_ipv6 != policy->is_ipv6) + continue; + if (policy->is_ipv6) + { + if (vp->laddr.start.ip6.as_u64[0] != policy->laddr.start.ip6.as_u64[0]) + continue; + if (vp->laddr.start.ip6.as_u64[1] != policy->laddr.start.ip6.as_u64[1]) + continue; + if (vp->laddr.stop.ip6.as_u64[0] != policy->laddr.stop.ip6.as_u64[0]) + continue; + if (vp->laddr.stop.ip6.as_u64[1] != policy->laddr.stop.ip6.as_u64[1]) + continue; + if (vp->raddr.start.ip6.as_u64[0] != policy->raddr.start.ip6.as_u64[0]) + continue; + if (vp->raddr.start.ip6.as_u64[1] != policy->raddr.start.ip6.as_u64[1]) + continue; + if (vp->raddr.stop.ip6.as_u64[0] != policy->raddr.stop.ip6.as_u64[0]) + continue; + if (vp->laddr.stop.ip6.as_u64[1] != policy->laddr.stop.ip6.as_u64[1]) + continue; + if (policy->is_outbound) + { + vec_foreach_index(j, spd->ipv6_outbound_policies) { + if (vec_elt(spd->ipv6_outbound_policies, j) == i) { + vec_del1 (spd->ipv6_outbound_policies, j); + break; + } + } + } + else + { + if (policy->policy == IPSEC_POLICY_ACTION_PROTECT) + { + vec_foreach_index(j, spd->ipv6_inbound_protect_policy_indices) { + if (vec_elt(spd->ipv6_inbound_protect_policy_indices, j) == i) { + vec_del1 (spd->ipv6_inbound_protect_policy_indices, j); + break; + } + } + } + else + { + vec_foreach_index(j, spd->ipv6_inbound_policy_discard_and_bypass_indices) { + if (vec_elt(spd->ipv6_inbound_policy_discard_and_bypass_indices, j) == i) { + vec_del1 (spd->ipv6_inbound_policy_discard_and_bypass_indices, j); + break; + } + } + } + } + } + else + { + if (vp->laddr.start.ip4.as_u32 != policy->laddr.start.ip4.as_u32) + continue; + if (vp->laddr.stop.ip4.as_u32 != policy->laddr.stop.ip4.as_u32) + continue; + if (vp->raddr.start.ip4.as_u32 != policy->raddr.start.ip4.as_u32) + continue; + if (vp->raddr.stop.ip4.as_u32 != policy->raddr.stop.ip4.as_u32) + continue; + if (policy->is_outbound) + { + vec_foreach_index(j, spd->ipv4_outbound_policies) { + if (vec_elt(spd->ipv4_outbound_policies, j) == i) { + vec_del1 (spd->ipv4_outbound_policies, j); + break; + } + } + } + else + { + if (policy->policy == IPSEC_POLICY_ACTION_PROTECT) + { + vec_foreach_index(j, spd->ipv4_inbound_protect_policy_indices) { + if (vec_elt(spd->ipv4_inbound_protect_policy_indices, j) == i) { + vec_del1 (spd->ipv4_inbound_protect_policy_indices, j); + break; + } + } + } + else + { + vec_foreach_index(j, spd->ipv4_inbound_policy_discard_and_bypass_indices) { + if (vec_elt(spd->ipv4_inbound_policy_discard_and_bypass_indices, j) == i) { + vec_del1 (spd->ipv4_inbound_policy_discard_and_bypass_indices, j); + break; + } + } + } + } + pool_put (spd->policies, vp); + break; + } + })); + /* *INDENT-ON* */ + } + + return 0; +} + +static u8 +ipsec_is_sa_used (u32 sa_index) +{ + ipsec_main_t *im = &ipsec_main; + ipsec_spd_t *spd; + ipsec_policy_t *p; + ipsec_tunnel_if_t *t; + + /* *INDENT-OFF* */ + pool_foreach(spd, im->spds, ({ + pool_foreach(p, spd->policies, ({ + if (p->policy == IPSEC_POLICY_ACTION_PROTECT) + { + if (p->sa_index == sa_index) + return 1; + } + })); + })); + + pool_foreach(t, im->tunnel_interfaces, ({ + if (t->input_sa_index == sa_index) + return 1; + if (t->output_sa_index == sa_index) + return 1; + })); + /* *INDENT-ON* */ + + return 0; +} + +int +ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add) +{ + ipsec_main_t *im = &ipsec_main; + ipsec_sa_t *sa = 0; + uword *p; + u32 sa_index; + + clib_warning ("id %u spi %u", new_sa->id, new_sa->spi); + + p = hash_get (im->sa_index_by_sa_id, new_sa->id); + if (p && is_add) + return VNET_API_ERROR_SYSCALL_ERROR_1; /* already exists */ + if (!p && !is_add) + return VNET_API_ERROR_SYSCALL_ERROR_1; + + if (!is_add) /* delete */ + { + sa_index = p[0]; + sa = pool_elt_at_index (im->sad, sa_index); + if (ipsec_is_sa_used (sa_index)) + { + clib_warning ("sa_id %u used in policy", sa->id); + return VNET_API_ERROR_SYSCALL_ERROR_1; /* sa used in policy */ + } + hash_unset (im->sa_index_by_sa_id, sa->id); + add_del_sa_sess (sa_index, is_add); + pool_put (im->sad, sa); + } + else /* create new SA */ + { + pool_get (im->sad, sa); + clib_memcpy (sa, new_sa, sizeof (*sa)); + sa_index = sa - im->sad; + hash_set (im->sa_index_by_sa_id, sa->id, sa_index); + if (add_del_sa_sess (sa_index, is_add) < 0) + return VNET_API_ERROR_SYSCALL_ERROR_1; + } + return 0; +} + +int +ipsec_set_sa_key (vlib_main_t * vm, ipsec_sa_t * sa_update) +{ + ipsec_main_t *im = &ipsec_main; + uword *p; + u32 sa_index; + ipsec_sa_t *sa = 0; + + p = hash_get (im->sa_index_by_sa_id, sa_update->id); + if (!p) + return VNET_API_ERROR_SYSCALL_ERROR_1; /* no such sa-id */ + + sa_index = p[0]; + sa = pool_elt_at_index (im->sad, sa_index); + + /* new crypto key */ + if (0 < sa_update->crypto_key_len) + { + clib_memcpy (sa->crypto_key, sa_update->crypto_key, + sa_update->crypto_key_len); + sa->crypto_key_len = sa_update->crypto_key_len; + } + + /* new integ key */ + if (0 < sa_update->integ_key_len) + { + clib_memcpy (sa->integ_key, sa_update->integ_key, + sa_update->integ_key_len); + sa->integ_key_len = sa_update->integ_key_len; + } + + if (sa->crypto_key_len + sa->integ_key_len > 0) + { + if (add_del_sa_sess (sa_index, 0) < 0) + return VNET_API_ERROR_SYSCALL_ERROR_1; + } + + return 0; +} + +static void +ipsec_rand_seed (void) +{ + struct + { + time_t time; + pid_t pid; + void *p; + } seed_data; + + seed_data.time = time (NULL); + seed_data.pid = getpid (); + seed_data.p = (void *) &seed_data; + + RAND_seed ((const void *) &seed_data, sizeof (seed_data)); +} + +static clib_error_t * +ipsec_init (vlib_main_t * vm) +{ + clib_error_t *error; + ipsec_main_t *im = &ipsec_main; + vlib_thread_main_t *tm = vlib_get_thread_main (); + vlib_node_t *node; + + ipsec_rand_seed (); + + memset (im, 0, sizeof (im[0])); + + im->vnet_main = vnet_get_main (); + im->vlib_main = vm; + + im->spd_index_by_spd_id = hash_create (0, sizeof (uword)); + im->sa_index_by_sa_id = hash_create (0, sizeof (uword)); + im->spd_index_by_sw_if_index = hash_create (0, sizeof (uword)); + + vec_validate_aligned (im->empty_buffers, tm->n_vlib_mains - 1, + CLIB_CACHE_LINE_BYTES); + + node = vlib_get_node_by_name (vm, (u8 *) "error-drop"); + ASSERT (node); + im->error_drop_node_index = node->index; + + node = vlib_get_node_by_name (vm, (u8 *) ESP_NODE); + + ASSERT (node); + im->esp_encrypt_node_index = node->index; + + node = vlib_get_node_by_name (vm, (u8 *) "ip4-lookup"); + ASSERT (node); + im->ip4_lookup_node_index = node->index; + + if ((error = vlib_call_init_function (vm, ipsec_cli_init))) + return error; + + if ((error = vlib_call_init_function (vm, ipsec_tunnel_if_init))) + return error; + + esp_init (); + + if ((error = ikev2_init (vm))) + return error; + + return 0; +} + +VLIB_INIT_FUNCTION (ipsec_init); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ipsec.h b/src/vnet/ipsec/ipsec.h new file mode 100644 index 00000000000..32c7edfc29d --- /dev/null +++ b/src/vnet/ipsec/ipsec.h @@ -0,0 +1,344 @@ +/* + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ +#ifndef __IPSEC_H__ +#define __IPSEC_H__ + +#define IPSEC_FLAG_IPSEC_GRE_TUNNEL (1 << 0) + +#define foreach_ipsec_policy_action \ + _(0, BYPASS, "bypass") \ + _(1, DISCARD, "discard") \ + _(2, RESOLVE, "resolve") \ + _(3, PROTECT, "protect") + +typedef enum +{ +#define _(v,f,s) IPSEC_POLICY_ACTION_##f = v, + foreach_ipsec_policy_action +#undef _ + IPSEC_POLICY_N_ACTION, +} ipsec_policy_action_t; + +#if DPDK_CRYPTO==1 +#define foreach_ipsec_crypto_alg \ + _(0, NONE, "none") \ + _(1, AES_CBC_128, "aes-cbc-128") \ + _(2, AES_CBC_192, "aes-cbc-192") \ + _(3, AES_CBC_256, "aes-cbc-256") \ + _(4, AES_GCM_128, "aes-gcm-128") +#else +#define foreach_ipsec_crypto_alg \ + _(0, NONE, "none") \ + _(1, AES_CBC_128, "aes-cbc-128") \ + _(2, AES_CBC_192, "aes-cbc-192") \ + _(3, AES_CBC_256, "aes-cbc-256") +#endif + +typedef enum +{ +#define _(v,f,s) IPSEC_CRYPTO_ALG_##f = v, + foreach_ipsec_crypto_alg +#undef _ + IPSEC_CRYPTO_N_ALG, +} ipsec_crypto_alg_t; + +#if DPDK_CRYPTO==1 +#define foreach_ipsec_integ_alg \ + _(0, NONE, "none") \ + _(1, MD5_96, "md5-96") /* RFC2403 */ \ + _(2, SHA1_96, "sha1-96") /* RFC2404 */ \ + _(3, SHA_256_96, "sha-256-96") /* draft-ietf-ipsec-ciph-sha-256-00 */ \ + _(4, SHA_256_128, "sha-256-128") /* RFC4868 */ \ + _(5, SHA_384_192, "sha-384-192") /* RFC4868 */ \ + _(6, SHA_512_256, "sha-512-256") /* RFC4868 */ \ + _(7, AES_GCM_128, "aes-gcm-128") +#else +#define foreach_ipsec_integ_alg \ + _(0, NONE, "none") \ + _(1, MD5_96, "md5-96") /* RFC2403 */ \ + _(2, SHA1_96, "sha1-96") /* RFC2404 */ \ + _(3, SHA_256_96, "sha-256-96") /* draft-ietf-ipsec-ciph-sha-256-00 */ \ + _(4, SHA_256_128, "sha-256-128") /* RFC4868 */ \ + _(5, SHA_384_192, "sha-384-192") /* RFC4868 */ \ + _(6, SHA_512_256, "sha-512-256") /* RFC4868 */ +#endif + +typedef enum +{ +#define _(v,f,s) IPSEC_INTEG_ALG_##f = v, + foreach_ipsec_integ_alg +#undef _ + IPSEC_INTEG_N_ALG, +} ipsec_integ_alg_t; + +typedef enum +{ + IPSEC_PROTOCOL_AH = 0, + IPSEC_PROTOCOL_ESP = 1 +} ipsec_protocol_t; + +typedef struct +{ + u32 id; + u32 spi; + ipsec_protocol_t protocol; + + ipsec_crypto_alg_t crypto_alg; + u8 crypto_key_len; + u8 crypto_key[128]; + + ipsec_integ_alg_t integ_alg; + u8 integ_key_len; + u8 integ_key[128]; + + u8 use_esn; + u8 use_anti_replay; + + u8 is_tunnel; + u8 is_tunnel_ip6; + ip46_address_t tunnel_src_addr; + ip46_address_t tunnel_dst_addr; + + u32 salt; + + /* runtime */ + u32 seq; + u32 seq_hi; + u32 last_seq; + u32 last_seq_hi; + u64 replay_window; +} ipsec_sa_t; + +typedef struct +{ + ip46_address_t start, stop; +} ip46_address_range_t; + +typedef struct +{ + u16 start, stop; +} port_range_t; + +typedef struct +{ + u8 is_add; + u8 esn; + u8 anti_replay; + ip4_address_t local_ip, remote_ip; + u32 local_spi; + u32 remote_spi; + ipsec_crypto_alg_t crypto_alg; + u8 local_crypto_key_len; + u8 local_crypto_key[128]; + u8 remote_crypto_key_len; + u8 remote_crypto_key[128]; + ipsec_integ_alg_t integ_alg; + u8 local_integ_key_len; + u8 local_integ_key[128]; + u8 remote_integ_key_len; + u8 remote_integ_key[128]; +} ipsec_add_del_tunnel_args_t; + +typedef struct +{ + u8 is_add; + u32 local_sa_id; + u32 remote_sa_id; + ip4_address_t local_ip; + ip4_address_t remote_ip; +} ipsec_add_del_ipsec_gre_tunnel_args_t; + +typedef enum +{ + IPSEC_IF_SET_KEY_TYPE_NONE, + IPSEC_IF_SET_KEY_TYPE_LOCAL_CRYPTO, + IPSEC_IF_SET_KEY_TYPE_REMOTE_CRYPTO, + IPSEC_IF_SET_KEY_TYPE_LOCAL_INTEG, + IPSEC_IF_SET_KEY_TYPE_REMOTE_INTEG, +} ipsec_if_set_key_type_t; + +typedef struct +{ + u32 id; + i32 priority; + u8 is_outbound; + + // Selector + u8 is_ipv6; + ip46_address_range_t laddr; + ip46_address_range_t raddr; + u8 protocol; + port_range_t lport; + port_range_t rport; + + // Policy + u8 policy; + u32 sa_id; + u32 sa_index; + + // Counter + vlib_counter_t counter; +} ipsec_policy_t; + +typedef struct +{ + u32 id; + /* pool of policies */ + ipsec_policy_t *policies; + /* vectors of policy indices */ + u32 *ipv4_outbound_policies; + u32 *ipv6_outbound_policies; + u32 *ipv4_inbound_protect_policy_indices; + u32 *ipv4_inbound_policy_discard_and_bypass_indices; + u32 *ipv6_inbound_protect_policy_indices; + u32 *ipv6_inbound_policy_discard_and_bypass_indices; +} ipsec_spd_t; + +typedef struct +{ + u32 spd_index; +} ip4_ipsec_config_t; + +typedef struct +{ + u32 spd_index; +} ip6_ipsec_config_t; + +typedef struct +{ + u32 input_sa_index; + u32 output_sa_index; + u32 hw_if_index; +} ipsec_tunnel_if_t; + +typedef struct +{ + /* pool of tunnel instances */ + ipsec_spd_t *spds; + ipsec_sa_t *sad; + + /* pool of tunnel interfaces */ + ipsec_tunnel_if_t *tunnel_interfaces; + u32 *free_tunnel_if_indices; + + u32 **empty_buffers; + + uword *tunnel_index_by_key; + + /* convenience */ + vlib_main_t *vlib_main; + vnet_main_t *vnet_main; + + /* next node indices */ + u32 feature_next_node_index[32]; + + /* hashes */ + uword *spd_index_by_spd_id; + uword *spd_index_by_sw_if_index; + uword *sa_index_by_sa_id; + uword *ipsec_if_pool_index_by_key; + + /* node indexes */ + u32 error_drop_node_index; + u32 ip4_lookup_node_index; + u32 esp_encrypt_node_index; + +} ipsec_main_t; + +ipsec_main_t ipsec_main; + +extern vlib_node_registration_t esp_encrypt_node; +extern vlib_node_registration_t esp_decrypt_node; +extern vlib_node_registration_t ipsec_if_output_node; +extern vlib_node_registration_t ipsec_if_input_node; + + +/* + * functions + */ +int ipsec_set_interface_spd (vlib_main_t * vm, u32 sw_if_index, u32 spd_id, + int is_add); +int ipsec_add_del_spd (vlib_main_t * vm, u32 spd_id, int is_add); +int ipsec_add_del_policy (vlib_main_t * vm, ipsec_policy_t * policy, + int is_add); +int ipsec_add_del_sa (vlib_main_t * vm, ipsec_sa_t * new_sa, int is_add); +int ipsec_set_sa_key (vlib_main_t * vm, ipsec_sa_t * sa_update); + +u32 ipsec_get_sa_index_by_sa_id (u32 sa_id); +u8 *format_ipsec_if_output_trace (u8 * s, va_list * args); +u8 *format_ipsec_policy_action (u8 * s, va_list * args); +u8 *format_ipsec_crypto_alg (u8 * s, va_list * args); +u8 *format_ipsec_integ_alg (u8 * s, va_list * args); +u8 *format_ipsec_replay_window (u8 * s, va_list * args); +uword unformat_ipsec_policy_action (unformat_input_t * input, va_list * args); +uword unformat_ipsec_crypto_alg (unformat_input_t * input, va_list * args); +uword unformat_ipsec_integ_alg (unformat_input_t * input, va_list * args); + +/*u32 ipsec_add_del_tunnel_if (vnet_main_t * vnm, ipsec_add_del_tunnel_args_t * args); */ +int ipsec_add_del_tunnel_if (ipsec_add_del_tunnel_args_t * args); +int ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm, + ipsec_add_del_ipsec_gre_tunnel_args_t * + args); +int ipsec_set_interface_key (vnet_main_t * vnm, u32 hw_if_index, + ipsec_if_set_key_type_t type, u8 alg, u8 * key); + + +/* + * inline functions + */ + +always_inline void +ipsec_alloc_empty_buffers (vlib_main_t * vm, ipsec_main_t * im) +{ + u32 cpu_index = os_get_cpu_number (); + uword l = vec_len (im->empty_buffers[cpu_index]); + uword n_alloc = 0; + + if (PREDICT_FALSE (l < VLIB_FRAME_SIZE)) + { + if (!im->empty_buffers[cpu_index]) + { + vec_alloc (im->empty_buffers[cpu_index], 2 * VLIB_FRAME_SIZE); + } + + n_alloc = vlib_buffer_alloc (vm, im->empty_buffers[cpu_index] + l, + 2 * VLIB_FRAME_SIZE - l); + + _vec_len (im->empty_buffers[cpu_index]) = l + n_alloc; + } +} + +static_always_inline u32 +get_next_output_feature_node_index (vlib_buffer_t * b, + vlib_node_runtime_t * nr) +{ + u32 next; + u32 sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX]; + vlib_main_t *vm = vlib_get_main (); + vlib_node_t *node = vlib_get_node (vm, nr->node_index); + + vnet_feature_next (sw_if_index, &next, b); + return node->next_nodes[next]; +} + +#endif /* __IPSEC_H__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ipsec_api.c b/src/vnet/ipsec/ipsec_api.c new file mode 100644 index 00000000000..30cc5bd2421 --- /dev/null +++ b/src/vnet/ipsec/ipsec_api.c @@ -0,0 +1,537 @@ +/* + *------------------------------------------------------------------ + * ipsec_api.c - ipsec api + * + * Copyright (c) 2016 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + *------------------------------------------------------------------ + */ + +#include +#include + +#include +#include +#include + +#include + +#if IPSEC > 0 +#include +#include +#endif /* IPSEC */ + +#define vl_typedefs /* define message structures */ +#include +#undef vl_typedefs + +#define vl_endianfun /* define message structures */ +#include +#undef vl_endianfun + +/* instantiate all the print functions we know about */ +#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__) +#define vl_printfun +#include +#undef vl_printfun + +#include + +#define foreach_vpe_api_msg \ +_(IPSEC_SPD_ADD_DEL, ipsec_spd_add_del) \ +_(IPSEC_INTERFACE_ADD_DEL_SPD, ipsec_interface_add_del_spd) \ +_(IPSEC_SPD_ADD_DEL_ENTRY, ipsec_spd_add_del_entry) \ +_(IPSEC_SAD_ADD_DEL_ENTRY, ipsec_sad_add_del_entry) \ +_(IPSEC_SA_SET_KEY, ipsec_sa_set_key) \ +_(IPSEC_SPD_DUMP, ipsec_spd_dump) \ +_(IKEV2_PROFILE_ADD_DEL, ikev2_profile_add_del) \ +_(IKEV2_PROFILE_SET_AUTH, ikev2_profile_set_auth) \ +_(IKEV2_PROFILE_SET_ID, ikev2_profile_set_id) \ +_(IKEV2_PROFILE_SET_TS, ikev2_profile_set_ts) \ +_(IKEV2_SET_LOCAL_KEY, ikev2_set_local_key) + +static void vl_api_ipsec_spd_add_del_t_handler + (vl_api_ipsec_spd_add_del_t * mp) +{ +#if IPSEC == 0 + clib_warning ("unimplemented"); +#else + + vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); + vl_api_ipsec_spd_add_del_reply_t *rmp; + int rv; + +#if DPDK > 0 + rv = ipsec_add_del_spd (vm, ntohl (mp->spd_id), mp->is_add); +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IPSEC_SPD_ADD_DEL_REPLY); +#endif +} + +static void vl_api_ipsec_interface_add_del_spd_t_handler + (vl_api_ipsec_interface_add_del_spd_t * mp) +{ + vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); + vl_api_ipsec_interface_add_del_spd_reply_t *rmp; + int rv; + u32 sw_if_index __attribute__ ((unused)); + u32 spd_id __attribute__ ((unused)); + + sw_if_index = ntohl (mp->sw_if_index); + spd_id = ntohl (mp->spd_id); + + VALIDATE_SW_IF_INDEX (mp); + +#if IPSEC > 0 + rv = ipsec_set_interface_spd (vm, sw_if_index, spd_id, mp->is_add); +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + BAD_SW_IF_INDEX_LABEL; + + REPLY_MACRO (VL_API_IPSEC_INTERFACE_ADD_DEL_SPD_REPLY); +} + +static void vl_api_ipsec_spd_add_del_entry_t_handler + (vl_api_ipsec_spd_add_del_entry_t * mp) +{ + vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); + vl_api_ipsec_spd_add_del_entry_reply_t *rmp; + int rv; + +#if IPSEC > 0 + ipsec_policy_t p; + + memset (&p, 0, sizeof (p)); + + p.id = ntohl (mp->spd_id); + p.priority = ntohl (mp->priority); + p.is_outbound = mp->is_outbound; + p.is_ipv6 = mp->is_ipv6; + + if (mp->is_ipv6 || mp->is_ip_any) + { + clib_memcpy (&p.raddr.start, mp->remote_address_start, 16); + clib_memcpy (&p.raddr.stop, mp->remote_address_stop, 16); + clib_memcpy (&p.laddr.start, mp->local_address_start, 16); + clib_memcpy (&p.laddr.stop, mp->local_address_stop, 16); + } + else + { + clib_memcpy (&p.raddr.start.ip4.data, mp->remote_address_start, 4); + clib_memcpy (&p.raddr.stop.ip4.data, mp->remote_address_stop, 4); + clib_memcpy (&p.laddr.start.ip4.data, mp->local_address_start, 4); + clib_memcpy (&p.laddr.stop.ip4.data, mp->local_address_stop, 4); + } + p.protocol = mp->protocol; + p.rport.start = ntohs (mp->remote_port_start); + p.rport.stop = ntohs (mp->remote_port_stop); + p.lport.start = ntohs (mp->local_port_start); + p.lport.stop = ntohs (mp->local_port_stop); + /* policy action resolve unsupported */ + if (mp->policy == IPSEC_POLICY_ACTION_RESOLVE) + { + clib_warning ("unsupported action: 'resolve'"); + rv = VNET_API_ERROR_UNIMPLEMENTED; + goto out; + } + p.policy = mp->policy; + p.sa_id = ntohl (mp->sa_id); + + rv = ipsec_add_del_policy (vm, &p, mp->is_add); + if (rv) + goto out; + + if (mp->is_ip_any) + { + p.is_ipv6 = 1; + rv = ipsec_add_del_policy (vm, &p, mp->is_add); + } +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; + goto out; +#endif + +out: + REPLY_MACRO (VL_API_IPSEC_SPD_ADD_DEL_ENTRY_REPLY); +} + +static void vl_api_ipsec_sad_add_del_entry_t_handler + (vl_api_ipsec_sad_add_del_entry_t * mp) +{ + vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); + vl_api_ipsec_sad_add_del_entry_reply_t *rmp; + int rv; +#if IPSEC > 0 + ipsec_sa_t sa; + + memset (&sa, 0, sizeof (sa)); + + sa.id = ntohl (mp->sad_id); + sa.spi = ntohl (mp->spi); + /* security protocol AH unsupported */ + if (mp->protocol == IPSEC_PROTOCOL_AH) + { + clib_warning ("unsupported security protocol 'AH'"); + rv = VNET_API_ERROR_UNIMPLEMENTED; + goto out; + } + sa.protocol = mp->protocol; + /* check for unsupported crypto-alg */ + if (mp->crypto_algorithm < IPSEC_CRYPTO_ALG_AES_CBC_128 || + mp->crypto_algorithm >= IPSEC_CRYPTO_N_ALG) + { + clib_warning ("unsupported crypto-alg: '%U'", format_ipsec_crypto_alg, + mp->crypto_algorithm); + rv = VNET_API_ERROR_UNIMPLEMENTED; + goto out; + } + sa.crypto_alg = mp->crypto_algorithm; + sa.crypto_key_len = mp->crypto_key_length; + clib_memcpy (&sa.crypto_key, mp->crypto_key, sizeof (sa.crypto_key)); + /* check for unsupported integ-alg */ +#if DPDK_CRYPTO==1 + if (mp->integrity_algorithm < IPSEC_INTEG_ALG_NONE || +#else + if (mp->integrity_algorithm < IPSEC_INTEG_ALG_SHA1_96 || +#endif + mp->integrity_algorithm >= IPSEC_INTEG_N_ALG) + { + clib_warning ("unsupported integ-alg: '%U'", format_ipsec_integ_alg, + mp->integrity_algorithm); + rv = VNET_API_ERROR_UNIMPLEMENTED; + goto out; + } + +#if DPDK_CRYPTO==1 + /*Special cases, aes-gcm-128 encryption */ + if (mp->crypto_algorithm == IPSEC_CRYPTO_ALG_AES_GCM_128) + { + if (mp->integrity_algorithm != IPSEC_INTEG_ALG_NONE + && mp->integrity_algorithm != IPSEC_INTEG_ALG_AES_GCM_128) + { + clib_warning + ("unsupported: aes-gcm-128 crypto-alg needs none as integ-alg"); + rv = VNET_API_ERROR_UNIMPLEMENTED; + goto out; + } + else /*set integ-alg internally to aes-gcm-128 */ + mp->integrity_algorithm = IPSEC_INTEG_ALG_AES_GCM_128; + } + else if (mp->integrity_algorithm == IPSEC_INTEG_ALG_AES_GCM_128) + { + clib_warning ("unsupported integ-alg: aes-gcm-128"); + rv = VNET_API_ERROR_UNIMPLEMENTED; + goto out; + } + else if (mp->integrity_algorithm == IPSEC_INTEG_ALG_NONE) + { + clib_warning ("unsupported integ-alg: none"); + rv = VNET_API_ERROR_UNIMPLEMENTED; + goto out; + } +#endif + + sa.integ_alg = mp->integrity_algorithm; + sa.integ_key_len = mp->integrity_key_length; + clib_memcpy (&sa.integ_key, mp->integrity_key, sizeof (sa.integ_key)); + sa.use_esn = mp->use_extended_sequence_number; + sa.is_tunnel = mp->is_tunnel; + sa.is_tunnel_ip6 = mp->is_tunnel_ipv6; + if (sa.is_tunnel_ip6) + { + clib_memcpy (&sa.tunnel_src_addr, mp->tunnel_src_address, 16); + clib_memcpy (&sa.tunnel_dst_addr, mp->tunnel_dst_address, 16); + } + else + { + clib_memcpy (&sa.tunnel_src_addr.ip4.data, mp->tunnel_src_address, 4); + clib_memcpy (&sa.tunnel_dst_addr.ip4.data, mp->tunnel_dst_address, 4); + } + + rv = ipsec_add_del_sa (vm, &sa, mp->is_add); +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; + goto out; +#endif + +out: + REPLY_MACRO (VL_API_IPSEC_SAD_ADD_DEL_ENTRY_REPLY); +} + +static void +send_ipsec_spd_details (ipsec_policy_t * p, unix_shared_memory_queue_t * q, + u32 context) +{ + vl_api_ipsec_spd_details_t *mp; + + mp = vl_msg_api_alloc (sizeof (*mp)); + memset (mp, 0, sizeof (*mp)); + mp->_vl_msg_id = ntohs (VL_API_IPSEC_SPD_DETAILS); + mp->context = context; + + mp->spd_id = htonl (p->id); + mp->priority = htonl (p->priority); + mp->is_outbound = p->is_outbound; + mp->is_ipv6 = p->is_ipv6; + if (p->is_ipv6) + { + memcpy (mp->local_start_addr, &p->laddr.start.ip6, 16); + memcpy (mp->local_stop_addr, &p->laddr.stop.ip6, 16); + memcpy (mp->remote_start_addr, &p->raddr.start.ip6, 16); + memcpy (mp->remote_stop_addr, &p->raddr.stop.ip6, 16); + } + else + { + memcpy (mp->local_start_addr, &p->laddr.start.ip4, 4); + memcpy (mp->local_stop_addr, &p->laddr.stop.ip4, 4); + memcpy (mp->remote_start_addr, &p->raddr.start.ip4, 4); + memcpy (mp->remote_stop_addr, &p->raddr.stop.ip4, 4); + } + mp->local_start_port = htons (p->lport.start); + mp->local_stop_port = htons (p->lport.stop); + mp->remote_start_port = htons (p->rport.start); + mp->remote_stop_port = htons (p->rport.stop); + mp->protocol = p->protocol; + mp->policy = p->policy; + mp->sa_id = htonl (p->sa_id); + mp->bytes = clib_host_to_net_u64 (p->counter.bytes); + mp->packets = clib_host_to_net_u64 (p->counter.packets); + + vl_msg_api_send_shmem (q, (u8 *) & mp); +} + +static void +vl_api_ipsec_spd_dump_t_handler (vl_api_ipsec_spd_dump_t * mp) +{ + unix_shared_memory_queue_t *q; + ipsec_main_t *im = &ipsec_main; + ipsec_policy_t *policy; + ipsec_spd_t *spd; + uword *p; + u32 spd_index; +#if IPSEC > 0 + q = vl_api_client_index_to_input_queue (mp->client_index); + if (q == 0) + return; + + p = hash_get (im->spd_index_by_spd_id, ntohl (mp->spd_id)); + if (!p) + return; + + spd_index = p[0]; + spd = pool_elt_at_index (im->spds, spd_index); + + /* *INDENT-OFF* */ + pool_foreach (policy, spd->policies, + ({ + if (mp->sa_id == ~(0) || ntohl (mp->sa_id) == policy->sa_id) + send_ipsec_spd_details (policy, q, + mp->context);} + )); + /* *INDENT-ON* */ +#else + clib_warning ("unimplemented"); +#endif +} + +static void +vl_api_ipsec_sa_set_key_t_handler (vl_api_ipsec_sa_set_key_t * mp) +{ + vlib_main_t *vm __attribute__ ((unused)) = vlib_get_main (); + vl_api_ipsec_sa_set_key_reply_t *rmp; + int rv; +#if IPSEC > 0 + ipsec_sa_t sa; + sa.id = ntohl (mp->sa_id); + sa.crypto_key_len = mp->crypto_key_length; + clib_memcpy (&sa.crypto_key, mp->crypto_key, sizeof (sa.crypto_key)); + sa.integ_key_len = mp->integrity_key_length; + clib_memcpy (&sa.integ_key, mp->integrity_key, sizeof (sa.integ_key)); + + rv = ipsec_set_sa_key (vm, &sa); +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IPSEC_SA_SET_KEY_REPLY); +} + +static void +vl_api_ikev2_profile_add_del_t_handler (vl_api_ikev2_profile_add_del_t * mp) +{ + vl_api_ikev2_profile_add_del_reply_t *rmp; + int rv = 0; + +#if IPSEC > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + u8 *tmp = format (0, "%s", mp->name); + error = ikev2_add_del_profile (vm, tmp, mp->is_add); + vec_free (tmp); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_PROFILE_ADD_DEL_REPLY); +} + +static void + vl_api_ikev2_profile_set_auth_t_handler + (vl_api_ikev2_profile_set_auth_t * mp) +{ + vl_api_ikev2_profile_set_auth_reply_t *rmp; + int rv = 0; + +#if IPSEC > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + u8 *tmp = format (0, "%s", mp->name); + u8 *data = vec_new (u8, mp->data_len); + clib_memcpy (data, mp->data, mp->data_len); + error = ikev2_set_profile_auth (vm, tmp, mp->auth_method, data, mp->is_hex); + vec_free (tmp); + vec_free (data); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_PROFILE_SET_AUTH_REPLY); +} + +static void +vl_api_ikev2_profile_set_id_t_handler (vl_api_ikev2_profile_set_id_t * mp) +{ + vl_api_ikev2_profile_add_del_reply_t *rmp; + int rv = 0; + +#if IPSEC > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + u8 *tmp = format (0, "%s", mp->name); + u8 *data = vec_new (u8, mp->data_len); + clib_memcpy (data, mp->data, mp->data_len); + error = ikev2_set_profile_id (vm, tmp, mp->id_type, data, mp->is_local); + vec_free (tmp); + vec_free (data); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_PROFILE_SET_ID_REPLY); +} + +static void +vl_api_ikev2_profile_set_ts_t_handler (vl_api_ikev2_profile_set_ts_t * mp) +{ + vl_api_ikev2_profile_set_ts_reply_t *rmp; + int rv = 0; + +#if IPSEC > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + u8 *tmp = format (0, "%s", mp->name); + error = ikev2_set_profile_ts (vm, tmp, mp->proto, mp->start_port, + mp->end_port, (ip4_address_t) mp->start_addr, + (ip4_address_t) mp->end_addr, mp->is_local); + vec_free (tmp); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_PROFILE_SET_TS_REPLY); +} + +static void +vl_api_ikev2_set_local_key_t_handler (vl_api_ikev2_set_local_key_t * mp) +{ + vl_api_ikev2_profile_set_ts_reply_t *rmp; + int rv = 0; + +#if IPSEC > 0 + vlib_main_t *vm = vlib_get_main (); + clib_error_t *error; + + error = ikev2_set_local_key (vm, mp->key_file); + if (error) + rv = VNET_API_ERROR_UNSPECIFIED; +#else + rv = VNET_API_ERROR_UNIMPLEMENTED; +#endif + + REPLY_MACRO (VL_API_IKEV2_SET_LOCAL_KEY_REPLY); +} + +/* + * ipsec_api_hookup + * Add vpe's API message handlers to the table. + * vlib has alread mapped shared memory and + * added the client registration handlers. + * See .../vlib-api/vlibmemory/memclnt_vlib.c:memclnt_process() + */ +#define vl_msg_name_crc_list +#include +#undef vl_msg_name_crc_list + +static void +setup_message_id_table (api_main_t * am) +{ +#define _(id,n,crc) vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id); + foreach_vl_msg_name_crc_ipsec; +#undef _ +} + +static clib_error_t * +ipsec_api_hookup (vlib_main_t * vm) +{ + api_main_t *am = &api_main; + +#define _(N,n) \ + vl_msg_api_set_handlers(VL_API_##N, #n, \ + vl_api_##n##_t_handler, \ + vl_noop_handler, \ + vl_api_##n##_t_endian, \ + vl_api_##n##_t_print, \ + sizeof(vl_api_##n##_t), 1); + foreach_vpe_api_msg; +#undef _ + + /* + * Set up the (msg_name, crc, message-id) table + */ + setup_message_id_table (am); + + return 0; +} + +VLIB_API_INIT_FUNCTION (ipsec_api_hookup); + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ipsec_cli.c b/src/vnet/ipsec/ipsec_cli.c new file mode 100644 index 00000000000..7ab85d4aefb --- /dev/null +++ b/src/vnet/ipsec/ipsec_cli.c @@ -0,0 +1,807 @@ +/* + * decap.c : IPSec tunnel support + * + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include +#include + +#include + +static clib_error_t * +set_interface_spd_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + ipsec_main_t *im = &ipsec_main; + u32 sw_if_index = (u32) ~ 0; + u32 spd_id; + int is_add = 1; + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + if (unformat + (line_input, "%U %u", unformat_vnet_sw_interface, im->vnet_main, + &sw_if_index, &spd_id)) + ; + else if (unformat (line_input, "del")) + is_add = 0; + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + + unformat_free (line_input); + + ipsec_set_interface_spd (vm, sw_if_index, spd_id, is_add); + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (set_interface_spd_command, static) = { + .path = "set interface ipsec spd", + .short_help = + "set interface ipsec spd ", + .function = set_interface_spd_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +ipsec_sa_add_del_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + ipsec_sa_t sa; + int is_add = ~0; + u8 *ck = 0, *ik = 0; + + memset (&sa, 0, sizeof (sa)); + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "add %u", &sa.id)) + is_add = 1; + else if (unformat (line_input, "del %u", &sa.id)) + is_add = 0; + else if (unformat (line_input, "spi %u", &sa.spi)) + ; + else if (unformat (line_input, "esp")) + sa.protocol = IPSEC_PROTOCOL_ESP; + else if (unformat (line_input, "ah")) + //sa.protocol = IPSEC_PROTOCOL_AH; + return clib_error_return (0, "unsupported security protocol 'AH'"); + else + if (unformat (line_input, "crypto-key %U", unformat_hex_string, &ck)) + sa.crypto_key_len = vec_len (ck); + else + if (unformat + (line_input, "crypto-alg %U", unformat_ipsec_crypto_alg, + &sa.crypto_alg)) + { + if (sa.crypto_alg < IPSEC_CRYPTO_ALG_AES_CBC_128 || + sa.crypto_alg >= IPSEC_CRYPTO_N_ALG) + return clib_error_return (0, "unsupported crypto-alg: '%U'", + format_ipsec_crypto_alg, sa.crypto_alg); + } + else + if (unformat (line_input, "integ-key %U", unformat_hex_string, &ik)) + sa.integ_key_len = vec_len (ik); + else if (unformat (line_input, "integ-alg %U", unformat_ipsec_integ_alg, + &sa.integ_alg)) + { +#if DPDK_CRYPTO==1 + if (sa.integ_alg < IPSEC_INTEG_ALG_NONE || +#else + if (sa.integ_alg < IPSEC_INTEG_ALG_SHA1_96 || +#endif + sa.integ_alg >= IPSEC_INTEG_N_ALG) + return clib_error_return (0, "unsupported integ-alg: '%U'", + format_ipsec_integ_alg, sa.integ_alg); + } + else if (unformat (line_input, "tunnel-src %U", + unformat_ip4_address, &sa.tunnel_src_addr.ip4)) + sa.is_tunnel = 1; + else if (unformat (line_input, "tunnel-dst %U", + unformat_ip4_address, &sa.tunnel_dst_addr.ip4)) + sa.is_tunnel = 1; + else if (unformat (line_input, "tunnel-src %U", + unformat_ip6_address, &sa.tunnel_src_addr.ip6)) + { + sa.is_tunnel = 1; + sa.is_tunnel_ip6 = 1; + } + else if (unformat (line_input, "tunnel-dst %U", + unformat_ip6_address, &sa.tunnel_dst_addr.ip6)) + { + sa.is_tunnel = 1; + sa.is_tunnel_ip6 = 1; + } + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + +#if DPDK_CRYPTO==1 + /*Special cases, aes-gcm-128 encryption */ + if (sa.crypto_alg == IPSEC_CRYPTO_ALG_AES_GCM_128) + { + if (sa.integ_alg != IPSEC_INTEG_ALG_NONE + && sa.integ_alg != IPSEC_INTEG_ALG_AES_GCM_128) + return clib_error_return (0, + "unsupported: aes-gcm-128 crypto-alg needs none as integ-alg"); + else /*set integ-alg internally to aes-gcm-128 */ + sa.integ_alg = IPSEC_INTEG_ALG_AES_GCM_128; + } + else if (sa.integ_alg == IPSEC_INTEG_ALG_AES_GCM_128) + return clib_error_return (0, "unsupported integ-alg: aes-gcm-128"); + else if (sa.integ_alg == IPSEC_INTEG_ALG_NONE) + return clib_error_return (0, "unsupported integ-alg: none"); +#endif + + unformat_free (line_input); + + if (sa.crypto_key_len > sizeof (sa.crypto_key)) + sa.crypto_key_len = sizeof (sa.crypto_key); + + if (sa.integ_key_len > sizeof (sa.integ_key)) + sa.integ_key_len = sizeof (sa.integ_key); + + if (ck) + strncpy ((char *) sa.crypto_key, (char *) ck, sa.crypto_key_len); + + if (ik) + strncpy ((char *) sa.integ_key, (char *) ik, sa.integ_key_len); + + ipsec_add_del_sa (vm, &sa, is_add); + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (ipsec_sa_add_del_command, static) = { + .path = "ipsec sa", + .short_help = + "ipsec sa [add|del]", + .function = ipsec_sa_add_del_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +ipsec_spd_add_del_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + u32 spd_id = ~0; + int is_add = ~0; + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "add")) + is_add = 1; + else if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "%u", &spd_id)) + ; + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + + unformat_free (line_input); + + if (spd_id == ~0) + return clib_error_return (0, "please specify SPD ID"); + + ipsec_add_del_spd (vm, spd_id, is_add); + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (ipsec_spd_add_del_command, static) = { + .path = "ipsec spd", + .short_help = + "ipsec spd [add|del] ", + .function = ipsec_spd_add_del_command_fn, +}; +/* *INDENT-ON* */ + + +static clib_error_t * +ipsec_policy_add_del_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + ipsec_policy_t p; + int is_add = 0; + int is_ip_any = 1; + u32 tmp, tmp2; + + memset (&p, 0, sizeof (p)); + p.lport.stop = p.rport.stop = ~0; + p.laddr.stop.ip4.as_u32 = p.raddr.stop.ip4.as_u32 = (u32) ~ 0; + p.laddr.stop.ip6.as_u64[0] = p.laddr.stop.ip6.as_u64[1] = (u64) ~ 0; + p.raddr.stop.ip6.as_u64[0] = p.raddr.stop.ip6.as_u64[1] = (u64) ~ 0; + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "add")) + is_add = 1; + else if (unformat (line_input, "del")) + is_add = 0; + else if (unformat (line_input, "spd %u", &p.id)) + ; + else if (unformat (line_input, "inbound")) + p.is_outbound = 0; + else if (unformat (line_input, "outbound")) + p.is_outbound = 1; + else if (unformat (line_input, "priority %d", &p.priority)) + ; + else if (unformat (line_input, "protocol %u", &tmp)) + p.protocol = (u8) tmp; + else + if (unformat + (line_input, "action %U", unformat_ipsec_policy_action, + &p.policy)) + { + if (p.policy == IPSEC_POLICY_ACTION_RESOLVE) + return clib_error_return (0, "unsupported action: 'resolve'"); + } + else if (unformat (line_input, "sa %u", &p.sa_id)) + ; + else if (unformat (line_input, "local-ip-range %U - %U", + unformat_ip4_address, &p.laddr.start.ip4, + unformat_ip4_address, &p.laddr.stop.ip4)) + is_ip_any = 0; + else if (unformat (line_input, "remote-ip-range %U - %U", + unformat_ip4_address, &p.raddr.start.ip4, + unformat_ip4_address, &p.raddr.stop.ip4)) + is_ip_any = 0; + else if (unformat (line_input, "local-ip-range %U - %U", + unformat_ip6_address, &p.laddr.start.ip6, + unformat_ip6_address, &p.laddr.stop.ip6)) + { + p.is_ipv6 = 1; + is_ip_any = 0; + } + else if (unformat (line_input, "remote-ip-range %U - %U", + unformat_ip6_address, &p.raddr.start.ip6, + unformat_ip6_address, &p.raddr.stop.ip6)) + { + p.is_ipv6 = 1; + is_ip_any = 0; + } + else if (unformat (line_input, "local-port-range %u - %u", &tmp, &tmp2)) + { + p.lport.start = tmp; + p.lport.stop = tmp2; + } + else + if (unformat (line_input, "remote-port-range %u - %u", &tmp, &tmp2)) + { + p.rport.start = tmp; + p.rport.stop = tmp2; + } + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + + unformat_free (line_input); + + ipsec_add_del_policy (vm, &p, is_add); + if (is_ip_any) + { + p.is_ipv6 = 1; + ipsec_add_del_policy (vm, &p, is_add); + } + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (ipsec_policy_add_del_command, static) = { + .path = "ipsec policy", + .short_help = + "ipsec policy [add|del] spd priority ", + .function = ipsec_policy_add_del_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +set_ipsec_sa_key_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + ipsec_sa_t sa; + u8 *ck = 0, *ik = 0; + + memset (&sa, 0, sizeof (sa)); + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "%u", &sa.id)) + ; + else + if (unformat (line_input, "crypto-key %U", unformat_hex_string, &ck)) + sa.crypto_key_len = vec_len (ck); + else + if (unformat (line_input, "integ-key %U", unformat_hex_string, &ik)) + sa.integ_key_len = vec_len (ik); + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + + unformat_free (line_input); + + if (sa.crypto_key_len > sizeof (sa.crypto_key)) + sa.crypto_key_len = sizeof (sa.crypto_key); + + if (sa.integ_key_len > sizeof (sa.integ_key)) + sa.integ_key_len = sizeof (sa.integ_key); + + if (ck) + strncpy ((char *) sa.crypto_key, (char *) ck, sa.crypto_key_len); + + if (ik) + strncpy ((char *) sa.integ_key, (char *) ik, sa.integ_key_len); + + ipsec_set_sa_key (vm, &sa); + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (set_ipsec_sa_key_command, static) = { + .path = "set ipsec sa", + .short_help = + "set ipsec sa crypto-key integ-key ", + .function = set_ipsec_sa_key_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +show_ipsec_command_fn (vlib_main_t * vm, + unformat_input_t * input, vlib_cli_command_t * cmd) +{ + ipsec_spd_t *spd; + ipsec_sa_t *sa; + ipsec_policy_t *p; + ipsec_main_t *im = &ipsec_main; + u32 *i; + ipsec_tunnel_if_t *t; + vnet_hw_interface_t *hi; + + /* *INDENT-OFF* */ + pool_foreach (sa, im->sad, ({ + if (sa->id) { + vlib_cli_output(vm, "sa %u spi %u mode %s protocol %s", sa->id, sa->spi, + sa->is_tunnel ? "tunnel" : "transport", + sa->protocol ? "esp" : "ah"); + if (sa->protocol == IPSEC_PROTOCOL_ESP) { + vlib_cli_output(vm, " crypto alg %U%s%U integrity alg %U%s%U", + format_ipsec_crypto_alg, sa->crypto_alg, + sa->crypto_alg ? " key " : "", + format_hex_bytes, sa->crypto_key, sa->crypto_key_len, + format_ipsec_integ_alg, sa->integ_alg, + sa->integ_alg ? " key " : "", + format_hex_bytes, sa->integ_key, sa->integ_key_len); + } + if (sa->is_tunnel && sa->is_tunnel_ip6) { + vlib_cli_output(vm, " tunnel src %U dst %U", + format_ip6_address, &sa->tunnel_src_addr.ip6, + format_ip6_address, &sa->tunnel_dst_addr.ip6); + } else if (sa->is_tunnel) { + vlib_cli_output(vm, " tunnel src %U dst %U", + format_ip4_address, &sa->tunnel_src_addr.ip4, + format_ip4_address, &sa->tunnel_dst_addr.ip4); + } + } + })); + /* *INDENT-ON* */ + + /* *INDENT-OFF* */ + pool_foreach (spd, im->spds, ({ + vlib_cli_output(vm, "spd %u", spd->id); + + vlib_cli_output(vm, " outbound policies"); + vec_foreach(i, spd->ipv4_outbound_policies) + { + p = pool_elt_at_index(spd->policies, *i); + vlib_cli_output(vm, " priority %d action %U protocol %s%s", + p->priority, + format_ipsec_policy_action, p->policy, + p->protocol ? + format(0, "%U", format_ip_protocol, p->protocol) : + (u8 *) "any", + p->policy == IPSEC_POLICY_ACTION_PROTECT ? + format(0, " sa %u", p->sa_id) : + (u8 *) ""); + vlib_cli_output(vm, " local addr range %U - %U port range %u - %u", + format_ip4_address, &p->laddr.start.ip4, + format_ip4_address, &p->laddr.stop.ip4, + p->lport.start, p->lport.stop); + vlib_cli_output(vm, " remte addr range %U - %U port range %u - %u", + format_ip4_address, &p->raddr.start.ip4, + format_ip4_address, &p->raddr.stop.ip4, + p->rport.start, p->rport.stop); + vlib_cli_output(vm, " packets %u bytes %u", p->counter.packets, + p->counter.bytes); + }; + vec_foreach(i, spd->ipv6_outbound_policies) + { + p = pool_elt_at_index(spd->policies, *i); + vlib_cli_output(vm, " priority %d action %U protocol %s%s", + p->priority, + format_ipsec_policy_action, p->policy, + p->protocol ? + format(0, "%U", format_ip_protocol, p->protocol) : + (u8 *) "any", + p->policy == IPSEC_POLICY_ACTION_PROTECT ? + format(0, " sa %u", p->sa_id) : + (u8 *) ""); + vlib_cli_output(vm, " local addr range %U - %U port range %u - %u", + format_ip6_address, &p->laddr.start.ip6, + format_ip6_address, &p->laddr.stop.ip6, + p->lport.start, p->lport.stop); + vlib_cli_output(vm, " remote addr range %U - %U port range %u - %u", + format_ip6_address, &p->raddr.start.ip6, + format_ip6_address, &p->raddr.stop.ip6, + p->rport.start, p->rport.stop); + vlib_cli_output(vm, " packets %u bytes %u", p->counter.packets, + p->counter.bytes); + }; + vlib_cli_output(vm, " inbound policies"); + vec_foreach(i, spd->ipv4_inbound_protect_policy_indices) + { + p = pool_elt_at_index(spd->policies, *i); + vlib_cli_output(vm, " priority %d action %U protocol %s%s", + p->priority, + format_ipsec_policy_action, p->policy, + p->protocol ? + format(0, "%U", format_ip_protocol, p->protocol) : + (u8 *) "any", + p->policy == IPSEC_POLICY_ACTION_PROTECT ? + format(0, " sa %u", p->sa_id) : + (u8 *) ""); + vlib_cli_output(vm, " local addr range %U - %U port range %u - %u", + format_ip4_address, &p->laddr.start.ip4, + format_ip4_address, &p->laddr.stop.ip4, + p->lport.start, p->lport.stop); + vlib_cli_output(vm, " remte addr range %U - %U port range %u - %u", + format_ip4_address, &p->raddr.start.ip4, + format_ip4_address, &p->raddr.stop.ip4, + p->rport.start, p->rport.stop); + vlib_cli_output(vm, " packets %u bytes %u", p->counter.packets, + p->counter.bytes); + }; + vec_foreach(i, spd->ipv4_inbound_policy_discard_and_bypass_indices) + { + p = pool_elt_at_index(spd->policies, *i); + vlib_cli_output(vm, " priority %d action %U protocol %s%s", + p->priority, + format_ipsec_policy_action, p->policy, + p->protocol ? + format(0, "%U", format_ip_protocol, p->protocol) : + (u8 *) "any", + p->policy == IPSEC_POLICY_ACTION_PROTECT ? + format(0, " sa %u", p->sa_id) : + (u8 *) ""); + vlib_cli_output(vm, " local addr range %U - %U port range %u - %u", + format_ip4_address, &p->laddr.start.ip4, + format_ip4_address, &p->laddr.stop.ip4, + p->lport.start, p->lport.stop); + vlib_cli_output(vm, " remte addr range %U - %U port range %u - %u", + format_ip4_address, &p->raddr.start.ip4, + format_ip4_address, &p->raddr.stop.ip4, + p->rport.start, p->rport.stop); + vlib_cli_output(vm, " packets %u bytes %u", p->counter.packets, + p->counter.bytes); + }; + vec_foreach(i, spd->ipv6_inbound_protect_policy_indices) + { + p = pool_elt_at_index(spd->policies, *i); + vlib_cli_output(vm, " priority %d action %U protocol %s%s", + p->priority, + format_ipsec_policy_action, p->policy, + p->protocol ? + format(0, "%U", format_ip_protocol, p->protocol) : + (u8 *) "any", + p->policy == IPSEC_POLICY_ACTION_PROTECT ? + format(0, " sa %u", p->sa_id) : + (u8 *) ""); + vlib_cli_output(vm, " local addr range %U - %U port range %u - %u", + format_ip6_address, &p->laddr.start.ip6, + format_ip6_address, &p->laddr.stop.ip6, + p->lport.start, p->lport.stop); + vlib_cli_output(vm, " remote addr range %U - %U port range %u - %u", + format_ip6_address, &p->raddr.start.ip6, + format_ip6_address, &p->raddr.stop.ip6, + p->rport.start, p->rport.stop); + vlib_cli_output(vm, " packets %u bytes %u", p->counter.packets, + p->counter.bytes); + }; + vec_foreach(i, spd->ipv6_inbound_policy_discard_and_bypass_indices) + { + p = pool_elt_at_index(spd->policies, *i); + vlib_cli_output(vm, " priority %d action %U protocol %s%s", + p->priority, + format_ipsec_policy_action, p->policy, + p->protocol ? + format(0, "%U", format_ip_protocol, p->protocol) : + (u8 *) "any", + p->policy == IPSEC_POLICY_ACTION_PROTECT ? + format(0, " sa %u", p->sa_id) : + (u8 *) ""); + vlib_cli_output(vm, " local addr range %U - %U port range %u - %u", + format_ip6_address, &p->laddr.start.ip6, + format_ip6_address, &p->laddr.stop.ip6, + p->lport.start, p->lport.stop); + vlib_cli_output(vm, " remote addr range %U - %U port range %u - %u", + format_ip6_address, &p->raddr.start.ip6, + format_ip6_address, &p->raddr.stop.ip6, + p->rport.start, p->rport.stop); + vlib_cli_output(vm, " packets %u bytes %u", p->counter.packets, + p->counter.bytes); + }; + })); + /* *INDENT-ON* */ + + vlib_cli_output (vm, "tunnel interfaces"); + /* *INDENT-OFF* */ + pool_foreach (t, im->tunnel_interfaces, ({ + if (t->hw_if_index == ~0) + continue; + hi = vnet_get_hw_interface (im->vnet_main, t->hw_if_index); + vlib_cli_output(vm, " %s seq", hi->name); + sa = pool_elt_at_index(im->sad, t->output_sa_index); + vlib_cli_output(vm, " seq %u seq-hi %u esn %u anti-replay %u", + sa->seq, sa->seq_hi, sa->use_esn, sa->use_anti_replay); + vlib_cli_output(vm, " local-spi %u local-ip %U", sa->spi, + format_ip4_address, &sa->tunnel_src_addr.ip4); + vlib_cli_output(vm, " local-crypto %U %U", + format_ipsec_crypto_alg, sa->crypto_alg, + format_hex_bytes, sa->crypto_key, sa->crypto_key_len); + vlib_cli_output(vm, " local-integrity %U %U", + format_ipsec_integ_alg, sa->integ_alg, + format_hex_bytes, sa->integ_key, sa->integ_key_len); + sa = pool_elt_at_index(im->sad, t->input_sa_index); + vlib_cli_output(vm, " last-seq %u last-seq-hi %u esn %u anti-replay %u window %U", + sa->last_seq, sa->last_seq_hi, sa->use_esn, + sa->use_anti_replay, + format_ipsec_replay_window, sa->replay_window); + vlib_cli_output(vm, " remote-spi %u remote-ip %U", sa->spi, + format_ip4_address, &sa->tunnel_src_addr.ip4); + vlib_cli_output(vm, " remote-crypto %U %U", + format_ipsec_crypto_alg, sa->crypto_alg, + format_hex_bytes, sa->crypto_key, sa->crypto_key_len); + vlib_cli_output(vm, " remote-integrity %U %U", + format_ipsec_integ_alg, sa->integ_alg, + format_hex_bytes, sa->integ_key, sa->integ_key_len); + })); + /* *INDENT-ON* */ + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (show_ipsec_command, static) = { + .path = "show ipsec", + .short_help = "show ipsec", + .function = show_ipsec_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +clear_ipsec_counters_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + ipsec_main_t *im = &ipsec_main; + ipsec_spd_t *spd; + ipsec_policy_t *p; + + /* *INDENT-OFF* */ + pool_foreach (spd, im->spds, ({ + pool_foreach(p, spd->policies, ({ + p->counter.packets = p->counter.bytes = 0; + })); + })); + /* *INDENT-ON* */ + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (clear_ipsec_counters_command, static) = { + .path = "clear ipsec counters", + .short_help = "clear ipsec counters", + .function = clear_ipsec_counters_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +create_ipsec_tunnel_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + ipsec_add_del_tunnel_args_t a; + int rv; + u32 num_m_args = 0; + + memset (&a, 0, sizeof (a)); + a.is_add = 1; + + /* Get a line of input. */ + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat + (line_input, "local-ip %U", unformat_ip4_address, &a.local_ip)) + num_m_args++; + else + if (unformat + (line_input, "remote-ip %U", unformat_ip4_address, &a.remote_ip)) + num_m_args++; + else if (unformat (line_input, "local-spi %u", &a.local_spi)) + num_m_args++; + else if (unformat (line_input, "remote-spi %u", &a.remote_spi)) + num_m_args++; + else if (unformat (line_input, "del")) + a.is_add = 0; + else + return clib_error_return (0, "unknown input `%U'", + format_unformat_error, input); + } + unformat_free (line_input); + + if (num_m_args < 4) + return clib_error_return (0, "mandatory argument(s) missing"); + + rv = ipsec_add_del_tunnel_if (&a); + + switch (rv) + { + case 0: + break; + case VNET_API_ERROR_INVALID_VALUE: + if (a.is_add) + return clib_error_return (0, + "IPSec tunnel interface already exists..."); + else + return clib_error_return (0, "IPSec tunnel interface not exists..."); + default: + return clib_error_return (0, "ipsec_register_interface returned %d", + rv); + } + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (create_ipsec_tunnel_command, static) = { + .path = "create ipsec tunnel", + .short_help = "create ipsec tunnel local-ip local-spi remote-ip remote-spi ", + .function = create_ipsec_tunnel_command_fn, +}; +/* *INDENT-ON* */ + +static clib_error_t * +set_interface_key_command_fn (vlib_main_t * vm, + unformat_input_t * input, + vlib_cli_command_t * cmd) +{ + unformat_input_t _line_input, *line_input = &_line_input; + ipsec_main_t *im = &ipsec_main; + ipsec_if_set_key_type_t type = IPSEC_IF_SET_KEY_TYPE_NONE; + u32 hw_if_index = (u32) ~ 0; + u32 alg; + u8 *key = 0; + + if (!unformat_user (input, unformat_line_input, line_input)) + return 0; + + while (unformat_check_input (line_input) != UNFORMAT_END_OF_INPUT) + { + if (unformat (line_input, "%U", + unformat_vnet_hw_interface, im->vnet_main, &hw_if_index)) + ; + else + if (unformat + (line_input, "local crypto %U", unformat_ipsec_crypto_alg, &alg)) + type = IPSEC_IF_SET_KEY_TYPE_LOCAL_CRYPTO; + else + if (unformat + (line_input, "remote crypto %U", unformat_ipsec_crypto_alg, &alg)) + type = IPSEC_IF_SET_KEY_TYPE_REMOTE_CRYPTO; + else + if (unformat + (line_input, "local integ %U", unformat_ipsec_integ_alg, &alg)) + type = IPSEC_IF_SET_KEY_TYPE_LOCAL_INTEG; + else + if (unformat + (line_input, "remote integ %U", unformat_ipsec_integ_alg, &alg)) + type = IPSEC_IF_SET_KEY_TYPE_REMOTE_INTEG; + else if (unformat (line_input, "%U", unformat_hex_string, &key)) + ; + else + return clib_error_return (0, "parse error: '%U'", + format_unformat_error, line_input); + } + + unformat_free (line_input); + + if (type == IPSEC_IF_SET_KEY_TYPE_NONE) + return clib_error_return (0, "unknown key type"); + + if (alg > 0 && vec_len (key) == 0) + return clib_error_return (0, "key is not specified"); + + if (hw_if_index == (u32) ~ 0) + return clib_error_return (0, "interface not specified"); + + ipsec_set_interface_key (im->vnet_main, hw_if_index, type, alg, key); + vec_free (key); + + return 0; +} + +/* *INDENT-OFF* */ +VLIB_CLI_COMMAND (set_interface_key_command, static) = { + .path = "set interface ipsec key", + .short_help = + "set interface ipsec key ", + .function = set_interface_key_command_fn, +}; +/* *INDENT-ON* */ + +clib_error_t * +ipsec_cli_init (vlib_main_t * vm) +{ + return 0; +} + +VLIB_INIT_FUNCTION (ipsec_cli_init); + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ipsec_format.c b/src/vnet/ipsec/ipsec_format.c new file mode 100644 index 00000000000..38aed79a155 --- /dev/null +++ b/src/vnet/ipsec/ipsec_format.c @@ -0,0 +1,141 @@ +/* + * decap.c : IPSec tunnel support + * + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include +#include + +#include + +u8 * +format_ipsec_policy_action (u8 * s, va_list * args) +{ + u32 i = va_arg (*args, u32); + char *t = 0; + + switch (i) + { +#define _(v,f,str) case IPSEC_POLICY_ACTION_##f: t = str; break; + foreach_ipsec_policy_action +#undef _ + default: + s = format (s, "unknown"); + } + s = format (s, "%s", t); + return s; +} + +uword +unformat_ipsec_policy_action (unformat_input_t * input, va_list * args) +{ + u32 *r = va_arg (*args, u32 *); + + if (0); +#define _(v,f,s) else if (unformat (input, s)) *r = IPSEC_POLICY_ACTION_##f; + foreach_ipsec_policy_action +#undef _ + else + return 0; + return 1; +} + +u8 * +format_ipsec_crypto_alg (u8 * s, va_list * args) +{ + u32 i = va_arg (*args, u32); + u8 *t = 0; + + switch (i) + { +#define _(v,f,str) case IPSEC_CRYPTO_ALG_##f: t = (u8 *) str; break; + foreach_ipsec_crypto_alg +#undef _ + default: + s = format (s, "unknown"); + } + s = format (s, "%s", t); + return s; +} + +uword +unformat_ipsec_crypto_alg (unformat_input_t * input, va_list * args) +{ + u32 *r = va_arg (*args, u32 *); + + if (0); +#define _(v,f,s) else if (unformat (input, s)) *r = IPSEC_CRYPTO_ALG_##f; + foreach_ipsec_crypto_alg +#undef _ + else + return 0; + return 1; +} + +u8 * +format_ipsec_integ_alg (u8 * s, va_list * args) +{ + u32 i = va_arg (*args, u32); + u8 *t = 0; + + switch (i) + { +#define _(v,f,str) case IPSEC_INTEG_ALG_##f: t = (u8 *) str; break; + foreach_ipsec_integ_alg +#undef _ + default: + s = format (s, "unknown"); + } + s = format (s, "%s", t); + return s; +} + +uword +unformat_ipsec_integ_alg (unformat_input_t * input, va_list * args) +{ + u32 *r = va_arg (*args, u32 *); + + if (0); +#define _(v,f,s) else if (unformat (input, s)) *r = IPSEC_INTEG_ALG_##f; + foreach_ipsec_integ_alg +#undef _ + else + return 0; + return 1; +} + +u8 * +format_ipsec_replay_window (u8 * s, va_list * args) +{ + u64 w = va_arg (*args, u64); + u8 i; + + for (i = 0; i < 64; i++) + { + s = format (s, "%u", w & (1ULL << i) ? 1 : 0); + } + + return s; +} + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ipsec_if.c b/src/vnet/ipsec/ipsec_if.c new file mode 100644 index 00000000000..a8da046f1a8 --- /dev/null +++ b/src/vnet/ipsec/ipsec_if.c @@ -0,0 +1,372 @@ +/* + * ipsec_if.c : IPSec interface support + * + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include + +#include +#if DPDK_CRYPTO==1 +#include +#else +#include +#endif + +#if DPDK_CRYPTO==0 +/* dummy function */ +static int +add_del_sa_sess (u32 sa_index, u8 is_add) +{ + return 0; +} +#endif + +void vl_api_rpc_call_main_thread (void *fp, u8 * data, u32 data_length); + +static u8 * +format_ipsec_name (u8 * s, va_list * args) +{ + u32 dev_instance = va_arg (*args, u32); + return format (s, "ipsec%d", dev_instance); +} + +static uword +dummy_interface_tx (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame) +{ + clib_warning ("you shouldn't be here, leaking buffers..."); + return frame->n_vectors; +} + +/* *INDENT-OFF* */ +VNET_DEVICE_CLASS (ipsec_device_class, static) = +{ + .name = "IPSec", + .format_device_name = format_ipsec_name, + .format_tx_trace = format_ipsec_if_output_trace, + .tx_function = dummy_interface_tx, +}; +/* *INDENT-ON* */ + +/* *INDENT-OFF* */ +VNET_HW_INTERFACE_CLASS (ipsec_hw_class) = +{ + .name = "IPSec", + .build_rewrite = default_build_rewrite, +}; +/* *INDENT-ON* */ + +static int +ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm, + ipsec_add_del_tunnel_args_t * args); + +static int +ipsec_add_del_tunnel_if_rpc_callback (ipsec_add_del_tunnel_args_t * a) +{ + vnet_main_t *vnm = vnet_get_main (); + ASSERT (os_get_cpu_number () == 0); + + return ipsec_add_del_tunnel_if_internal (vnm, a); +} + +int +ipsec_add_del_tunnel_if (ipsec_add_del_tunnel_args_t * args) +{ + vl_api_rpc_call_main_thread (ipsec_add_del_tunnel_if_rpc_callback, + (u8 *) args, sizeof (*args)); + return 0; +} + +int +ipsec_add_del_tunnel_if_internal (vnet_main_t * vnm, + ipsec_add_del_tunnel_args_t * args) +{ + ipsec_tunnel_if_t *t; + ipsec_main_t *im = &ipsec_main; + vnet_hw_interface_t *hi; + u32 hw_if_index = ~0; + uword *p; + ipsec_sa_t *sa; + + u64 key = (u64) args->remote_ip.as_u32 << 32 | (u64) args->remote_spi; + p = hash_get (im->ipsec_if_pool_index_by_key, key); + + if (args->is_add) + { + /* check if same src/dst pair exists */ + if (p) + return VNET_API_ERROR_INVALID_VALUE; + + pool_get_aligned (im->tunnel_interfaces, t, CLIB_CACHE_LINE_BYTES); + memset (t, 0, sizeof (*t)); + + pool_get (im->sad, sa); + memset (sa, 0, sizeof (*sa)); + t->input_sa_index = sa - im->sad; + sa->spi = args->remote_spi; + sa->tunnel_src_addr.ip4.as_u32 = args->remote_ip.as_u32; + sa->tunnel_dst_addr.ip4.as_u32 = args->local_ip.as_u32; + sa->is_tunnel = 1; + sa->use_esn = args->esn; + sa->use_anti_replay = args->anti_replay; + sa->integ_alg = args->integ_alg; + if (args->remote_integ_key_len <= sizeof (args->remote_integ_key)) + { + sa->integ_key_len = args->remote_integ_key_len; + clib_memcpy (sa->integ_key, args->remote_integ_key, + args->remote_integ_key_len); + } + sa->crypto_alg = args->crypto_alg; + if (args->remote_crypto_key_len <= sizeof (args->remote_crypto_key)) + { + sa->crypto_key_len = args->remote_crypto_key_len; + clib_memcpy (sa->crypto_key, args->remote_crypto_key, + args->remote_crypto_key_len); + } + + add_del_sa_sess (t->input_sa_index, args->is_add); + + pool_get (im->sad, sa); + memset (sa, 0, sizeof (*sa)); + t->output_sa_index = sa - im->sad; + sa->spi = args->local_spi; + sa->tunnel_src_addr.ip4.as_u32 = args->local_ip.as_u32; + sa->tunnel_dst_addr.ip4.as_u32 = args->remote_ip.as_u32; + sa->is_tunnel = 1; + sa->seq = 1; + sa->use_esn = args->esn; + sa->use_anti_replay = args->anti_replay; + sa->integ_alg = args->integ_alg; + if (args->local_integ_key_len <= sizeof (args->local_integ_key)) + { + sa->integ_key_len = args->local_integ_key_len; + clib_memcpy (sa->integ_key, args->local_integ_key, + args->local_integ_key_len); + } + sa->crypto_alg = args->crypto_alg; + if (args->local_crypto_key_len <= sizeof (args->local_crypto_key)) + { + sa->crypto_key_len = args->local_crypto_key_len; + clib_memcpy (sa->crypto_key, args->local_crypto_key, + args->local_crypto_key_len); + } + + add_del_sa_sess (t->output_sa_index, args->is_add); + + hash_set (im->ipsec_if_pool_index_by_key, key, + t - im->tunnel_interfaces); + + if (vec_len (im->free_tunnel_if_indices) > 0) + { + hw_if_index = + im->free_tunnel_if_indices[vec_len (im->free_tunnel_if_indices) - + 1]; + _vec_len (im->free_tunnel_if_indices) -= 1; + } + else + { + hw_if_index = + vnet_register_interface (vnm, ipsec_device_class.index, + t - im->tunnel_interfaces, + ipsec_hw_class.index, + t - im->tunnel_interfaces); + + hi = vnet_get_hw_interface (vnm, hw_if_index); + hi->output_node_index = ipsec_if_output_node.index; + } + t->hw_if_index = hw_if_index; + + /*1st interface, register protocol */ + if (pool_elts (im->tunnel_interfaces) == 1) + ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP, + ipsec_if_input_node.index); + + return hw_if_index; + } + else + { + /* check if exists */ + if (!p) + return VNET_API_ERROR_INVALID_VALUE; + + t = pool_elt_at_index (im->tunnel_interfaces, p[0]); + hi = vnet_get_hw_interface (vnm, t->hw_if_index); + vnet_sw_interface_set_flags (vnm, hi->sw_if_index, 0); /* admin down */ + vec_add1 (im->free_tunnel_if_indices, t->hw_if_index); + + /* delete input and output SA */ + sa = pool_elt_at_index (im->sad, t->input_sa_index); + + if (add_del_sa_sess (t->input_sa_index, args->is_add) < 0) + return VNET_API_ERROR_SYSCALL_ERROR_1; + + pool_put (im->sad, sa); + + sa = pool_elt_at_index (im->sad, t->output_sa_index); + + if (add_del_sa_sess (t->output_sa_index, args->is_add) < 0) + return VNET_API_ERROR_SYSCALL_ERROR_1; + + pool_put (im->sad, sa); + + hash_unset (im->ipsec_if_pool_index_by_key, key); + pool_put (im->tunnel_interfaces, t); + } + return 0; +} + +int +ipsec_add_del_ipsec_gre_tunnel (vnet_main_t * vnm, + ipsec_add_del_ipsec_gre_tunnel_args_t * args) +{ + ipsec_tunnel_if_t *t = 0; + ipsec_main_t *im = &ipsec_main; + uword *p; + ipsec_sa_t *sa; + u64 key; + u32 isa, osa; + + p = hash_get (im->sa_index_by_sa_id, args->local_sa_id); + if (!p) + return VNET_API_ERROR_INVALID_VALUE; + isa = p[0]; + + p = hash_get (im->sa_index_by_sa_id, args->remote_sa_id); + if (!p) + return VNET_API_ERROR_INVALID_VALUE; + osa = p[0]; + sa = pool_elt_at_index (im->sad, p[0]); + + if (sa->is_tunnel) + key = (u64) sa->tunnel_dst_addr.ip4.as_u32 << 32 | (u64) sa->spi; + else + key = (u64) args->remote_ip.as_u32 << 32 | (u64) sa->spi; + + p = hash_get (im->ipsec_if_pool_index_by_key, key); + + if (args->is_add) + { + /* check if same src/dst pair exists */ + if (p) + return VNET_API_ERROR_INVALID_VALUE; + + pool_get_aligned (im->tunnel_interfaces, t, CLIB_CACHE_LINE_BYTES); + memset (t, 0, sizeof (*t)); + + t->input_sa_index = isa; + t->output_sa_index = osa; + t->hw_if_index = ~0; + hash_set (im->ipsec_if_pool_index_by_key, key, + t - im->tunnel_interfaces); + + /*1st interface, register protocol */ + if (pool_elts (im->tunnel_interfaces) == 1) + ip4_register_protocol (IP_PROTOCOL_IPSEC_ESP, + ipsec_if_input_node.index); + } + else + { + /* check if exists */ + if (!p) + return VNET_API_ERROR_INVALID_VALUE; + + t = pool_elt_at_index (im->tunnel_interfaces, p[0]); + hash_unset (im->ipsec_if_pool_index_by_key, key); + pool_put (im->tunnel_interfaces, t); + } + return 0; +} + +int +ipsec_set_interface_key (vnet_main_t * vnm, u32 hw_if_index, + ipsec_if_set_key_type_t type, u8 alg, u8 * key) +{ + ipsec_main_t *im = &ipsec_main; + vnet_hw_interface_t *hi; + ipsec_tunnel_if_t *t; + ipsec_sa_t *sa; + + hi = vnet_get_hw_interface (vnm, hw_if_index); + t = pool_elt_at_index (im->tunnel_interfaces, hi->dev_instance); + + if (type == IPSEC_IF_SET_KEY_TYPE_LOCAL_CRYPTO) + { + sa = pool_elt_at_index (im->sad, t->output_sa_index); + sa->crypto_alg = alg; + sa->crypto_key_len = vec_len (key); + clib_memcpy (sa->crypto_key, key, vec_len (key)); + + if (add_del_sa_sess (t->input_sa_index, 0) < 0) + return VNET_API_ERROR_SYSCALL_ERROR_1; + } + else if (type == IPSEC_IF_SET_KEY_TYPE_LOCAL_INTEG) + { + sa = pool_elt_at_index (im->sad, t->output_sa_index); + sa->integ_alg = alg; + sa->integ_key_len = vec_len (key); + clib_memcpy (sa->integ_key, key, vec_len (key)); + + if (add_del_sa_sess (t->output_sa_index, 0) < 0) + return VNET_API_ERROR_SYSCALL_ERROR_1; + } + else if (type == IPSEC_IF_SET_KEY_TYPE_REMOTE_CRYPTO) + { + sa = pool_elt_at_index (im->sad, t->input_sa_index); + sa->crypto_alg = alg; + sa->crypto_key_len = vec_len (key); + clib_memcpy (sa->crypto_key, key, vec_len (key)); + + if (add_del_sa_sess (t->input_sa_index, 0) < 0) + return VNET_API_ERROR_SYSCALL_ERROR_1; + } + else if (type == IPSEC_IF_SET_KEY_TYPE_REMOTE_INTEG) + { + sa = pool_elt_at_index (im->sad, t->input_sa_index); + sa->integ_alg = alg; + sa->integ_key_len = vec_len (key); + clib_memcpy (sa->integ_key, key, vec_len (key)); + + if (add_del_sa_sess (t->output_sa_index, 0) < 0) + return VNET_API_ERROR_SYSCALL_ERROR_1; + } + else + return VNET_API_ERROR_INVALID_VALUE; + + return 0; +} + + +clib_error_t * +ipsec_tunnel_if_init (vlib_main_t * vm) +{ + ipsec_main_t *im = &ipsec_main; + + im->ipsec_if_pool_index_by_key = hash_create (0, sizeof (uword)); + + return 0; +} + +VLIB_INIT_FUNCTION (ipsec_tunnel_if_init); + + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ipsec_if_in.c b/src/vnet/ipsec/ipsec_if_in.c new file mode 100644 index 00000000000..db75ab92da9 --- /dev/null +++ b/src/vnet/ipsec/ipsec_if_in.c @@ -0,0 +1,175 @@ +/* + * ipsec_if_in.c : IPSec interface input node + * + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include + +#include +#include + +#if DPDK_CRYPTO==1 +#define ESP_NODE "dpdk-esp-decrypt" +#else +#define ESP_NODE "esp-decrypt" +#endif + +/* Statistics (not really errors) */ +#define foreach_ipsec_if_input_error \ +_(RX, "good packets received") + +static char *ipsec_if_input_error_strings[] = { +#define _(sym,string) string, + foreach_ipsec_if_input_error +#undef _ +}; + +typedef enum +{ +#define _(sym,str) IPSEC_IF_INPUT_ERROR_##sym, + foreach_ipsec_if_input_error +#undef _ + IPSEC_IF_INPUT_N_ERROR, +} ipsec_if_input_error_t; + +typedef enum +{ + IPSEC_IF_INPUT_NEXT_ESP_DECRYPT, + IPSEC_IF_INPUT_NEXT_DROP, + IPSEC_IF_INPUT_N_NEXT, +} ipsec_if_input_next_t; + +typedef struct +{ + u32 spi; + u32 seq; +} ipsec_if_input_trace_t; + + +u8 * +format_ipsec_if_input_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + ipsec_if_input_trace_t *t = va_arg (*args, ipsec_if_input_trace_t *); + + s = format (s, "IPSec: spi %u seq %u", t->spi, t->seq); + return s; +} + +static uword +ipsec_if_input_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + u32 *from, *to_next = 0, next_index; + u32 n_left_from; + + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0, next0; + vlib_buffer_t *b0; + ip4_header_t *ip0; + esp_header_t *esp0; + uword *p; + + bi0 = to_next[0] = from[0]; + from += 1; + n_left_from -= 1; + to_next += 1; + n_left_to_next -= 1; + b0 = vlib_get_buffer (vm, bi0); + ip0 = vlib_buffer_get_current (b0); + esp0 = (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0)); + + next0 = IPSEC_IF_INPUT_NEXT_DROP; + + u64 key = (u64) ip0->src_address.as_u32 << 32 | + (u64) clib_net_to_host_u32 (esp0->spi); + + p = hash_get (im->ipsec_if_pool_index_by_key, key); + + if (p) + { + ipsec_tunnel_if_t *t; + t = pool_elt_at_index (im->tunnel_interfaces, p[0]); + vnet_buffer (b0)->ipsec.sad_index = t->input_sa_index; + vnet_buffer (b0)->ipsec.flags = + t->hw_if_index == ~0 ? IPSEC_FLAG_IPSEC_GRE_TUNNEL : 0; + vlib_buffer_advance (b0, ip4_header_bytes (ip0)); + next0 = IPSEC_IF_INPUT_NEXT_ESP_DECRYPT; + } + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + ipsec_if_input_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + tr->spi = clib_host_to_net_u32 (esp0->spi); + tr->seq = clib_host_to_net_u32 (esp0->seq); + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + vlib_node_increment_counter (vm, ipsec_if_input_node.index, + IPSEC_IF_INPUT_ERROR_RX, + from_frame->n_vectors); + + return from_frame->n_vectors; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (ipsec_if_input_node) = { + .function = ipsec_if_input_node_fn, + .name = "ipsec-if-input", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_if_input_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(ipsec_if_input_error_strings), + .error_strings = ipsec_if_input_error_strings, + + .n_next_nodes = IPSEC_IF_INPUT_N_NEXT, + + .next_nodes = { + [IPSEC_IF_INPUT_NEXT_ESP_DECRYPT] = ESP_NODE, + [IPSEC_IF_INPUT_NEXT_DROP] = "error-drop", + }, +}; +/* *INDENT-ON* */ + +VLIB_NODE_FUNCTION_MULTIARCH (ipsec_if_input_node, ipsec_if_input_node_fn) +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ipsec_if_out.c b/src/vnet/ipsec/ipsec_if_out.c new file mode 100644 index 00000000000..8f062828413 --- /dev/null +++ b/src/vnet/ipsec/ipsec_if_out.c @@ -0,0 +1,161 @@ +/* + * ipsec_if_out.c : IPSec interface output node + * + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include + +#include + +#if DPDK_CRYPTO==1 +#define ESP_NODE "dpdk-esp-encrypt" +#else +#define ESP_NODE "esp-encrypt" +#endif + +/* Statistics (not really errors) */ +#define foreach_ipsec_if_output_error \ +_(TX, "good packets transmitted") + +static char *ipsec_if_output_error_strings[] = { +#define _(sym,string) string, + foreach_ipsec_if_output_error +#undef _ +}; + +typedef enum +{ +#define _(sym,str) IPSEC_IF_OUTPUT_ERROR_##sym, + foreach_ipsec_if_output_error +#undef _ + IPSEC_IF_OUTPUT_N_ERROR, +} ipsec_if_output_error_t; + +typedef enum +{ + IPSEC_IF_OUTPUT_NEXT_ESP_ENCRYPT, + IPSEC_IF_OUTPUT_NEXT_DROP, + IPSEC_IF_OUTPUT_N_NEXT, +} ipsec_if_output_next_t; + +typedef struct +{ + u32 spi; + u32 seq; +} ipsec_if_output_trace_t; + + +u8 * +format_ipsec_if_output_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + ipsec_if_output_trace_t *t = va_arg (*args, ipsec_if_output_trace_t *); + + s = format (s, "IPSec: spi %u seq %u", t->spi, t->seq); + return s; +} + +static uword +ipsec_if_output_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + ipsec_main_t *im = &ipsec_main; + vnet_main_t *vnm = im->vnet_main; + u32 *from, *to_next = 0, next_index; + u32 n_left_from, sw_if_index0; + + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0, next0; + vlib_buffer_t *b0; + ipsec_tunnel_if_t *t0; + vnet_hw_interface_t *hi0; + + bi0 = to_next[0] = from[0]; + from += 1; + n_left_from -= 1; + to_next += 1; + n_left_to_next -= 1; + b0 = vlib_get_buffer (vm, bi0); + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + hi0 = vnet_get_sup_hw_interface (vnm, sw_if_index0); + t0 = pool_elt_at_index (im->tunnel_interfaces, hi0->dev_instance); + vnet_buffer (b0)->ipsec.sad_index = t0->output_sa_index; + next0 = IPSEC_IF_OUTPUT_NEXT_ESP_ENCRYPT; + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + ipsec_if_output_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + ipsec_sa_t *sa0 = + pool_elt_at_index (im->sad, t0->output_sa_index); + tr->spi = sa0->spi; + tr->seq = sa0->seq; + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + + vlib_node_increment_counter (vm, ipsec_if_output_node.index, + IPSEC_IF_OUTPUT_ERROR_TX, + from_frame->n_vectors); + + return from_frame->n_vectors; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (ipsec_if_output_node) = { + .function = ipsec_if_output_node_fn, + .name = "ipsec-if-output", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_if_output_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(ipsec_if_output_error_strings), + .error_strings = ipsec_if_output_error_strings, + + .n_next_nodes = IPSEC_IF_OUTPUT_N_NEXT, + + .next_nodes = { + [IPSEC_IF_OUTPUT_NEXT_ESP_ENCRYPT] = ESP_NODE, + [IPSEC_IF_OUTPUT_NEXT_DROP] = "error-drop", + }, +}; +/* *INDENT-ON* */ + +VLIB_NODE_FUNCTION_MULTIARCH (ipsec_if_output_node, ipsec_if_output_node_fn) +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ipsec_input.c b/src/vnet/ipsec/ipsec_input.c new file mode 100644 index 00000000000..4662c1a1cf0 --- /dev/null +++ b/src/vnet/ipsec/ipsec_input.c @@ -0,0 +1,455 @@ +/* + * decap.c : IPSec tunnel decapsulation + * + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include +#include + +#include +#include + +#if DPDK_CRYPTO==1 +#define ESP_NODE "dpdk-esp-decrypt" +#else +#define ESP_NODE "esp-decrypt" +#endif + +#define foreach_ipsec_input_next \ +_(DROP, "error-drop") \ +_(ESP_DECRYPT, ESP_NODE) + +#define _(v, s) IPSEC_INPUT_NEXT_##v, +typedef enum +{ + foreach_ipsec_input_next +#undef _ + IPSEC_INPUT_N_NEXT, +} ipsec_input_next_t; + + +#define foreach_ipsec_input_error \ + _(RX_PKTS, "IPSEC pkts received") \ + _(DECRYPTION_FAILED, "IPSEC decryption failed") + + +typedef enum +{ +#define _(sym,str) IPSEC_INPUT_ERROR_##sym, + foreach_ipsec_input_error +#undef _ + IPSEC_INPUT_N_ERROR, +} ipsec_input_error_t; + +static char *ipsec_input_error_strings[] = { +#define _(sym,string) string, + foreach_ipsec_input_error +#undef _ +}; + +typedef struct +{ + u32 sa_id; + u32 spi; + u32 seq; +} ipsec_input_trace_t; + +/* packet trace format function */ +static u8 * +format_ipsec_input_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + ipsec_input_trace_t *t = va_arg (*args, ipsec_input_trace_t *); + + if (t->spi == 0 && t->seq == 0) + { + s = format (s, "esp: no esp packet"); + return s; + } + + if (t->sa_id != 0) + { + s = format (s, "esp: sa_id %u spi %u seq %u", t->sa_id, t->spi, t->seq); + } + else + { + s = format (s, "esp: no sa spi %u seq %u", t->spi, t->seq); + } + return s; +} + +always_inline ipsec_policy_t * +ipsec_input_protect_policy_match (ipsec_spd_t * spd, u32 sa, u32 da, u32 spi) +{ + ipsec_main_t *im = &ipsec_main; + ipsec_policy_t *p; + ipsec_sa_t *s; + u32 *i; + + vec_foreach (i, spd->ipv4_inbound_protect_policy_indices) + { + p = pool_elt_at_index (spd->policies, *i); + s = pool_elt_at_index (im->sad, p->sa_index); + + if (spi != s->spi) + continue; + + if (s->is_tunnel) + { + if (da != clib_net_to_host_u32 (s->tunnel_dst_addr.ip4.as_u32)) + continue; + + if (sa != clib_net_to_host_u32 (s->tunnel_src_addr.ip4.as_u32)) + continue; + + return p; + } + + if (da < clib_net_to_host_u32 (p->laddr.start.ip4.as_u32)) + continue; + + if (da > clib_net_to_host_u32 (p->laddr.stop.ip4.as_u32)) + continue; + + if (sa < clib_net_to_host_u32 (p->raddr.start.ip4.as_u32)) + continue; + + if (sa > clib_net_to_host_u32 (p->raddr.stop.ip4.as_u32)) + continue; + + return p; + } + return 0; +} + +always_inline uword +ip6_addr_match_range (ip6_address_t * a, ip6_address_t * la, + ip6_address_t * ua) +{ + if ((memcmp (a->as_u64, la->as_u64, 2 * sizeof (u64)) >= 0) && + (memcmp (a->as_u64, ua->as_u64, 2 * sizeof (u64)) <= 0)) + return 1; + return 0; +} + +always_inline ipsec_policy_t * +ipsec_input_ip6_protect_policy_match (ipsec_spd_t * spd, + ip6_address_t * sa, + ip6_address_t * da, u32 spi) +{ + ipsec_main_t *im = &ipsec_main; + ipsec_policy_t *p; + ipsec_sa_t *s; + u32 *i; + + vec_foreach (i, spd->ipv6_inbound_protect_policy_indices) + { + p = pool_elt_at_index (spd->policies, *i); + s = pool_elt_at_index (im->sad, p->sa_index); + + if (spi != s->spi) + continue; + + if (s->is_tunnel) + { + if (!ip6_address_is_equal (sa, &s->tunnel_src_addr.ip6)) + continue; + + if (!ip6_address_is_equal (da, &s->tunnel_dst_addr.ip6)) + continue; + + return p; + } + + if (!ip6_addr_match_range (sa, &p->raddr.start.ip6, &p->raddr.stop.ip6)) + continue; + + if (!ip6_addr_match_range (da, &p->laddr.start.ip6, &p->laddr.stop.ip6)) + continue; + + return p; + } + return 0; +} + +static vlib_node_registration_t ipsec_input_ip4_node; + +static uword +ipsec_input_ip4_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + u32 n_left_from, *from, next_index, *to_next; + ipsec_main_t *im = &ipsec_main; + + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0, next0; + vlib_buffer_t *b0; + ip4_header_t *ip0; + esp_header_t *esp0; + ip4_ipsec_config_t *c0; + ipsec_spd_t *spd0; + ipsec_policy_t *p0 = 0; + + bi0 = to_next[0] = from[0]; + from += 1; + n_left_from -= 1; + to_next += 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + c0 = + vnet_feature_next_with_data (vnet_buffer (b0)->sw_if_index + [VLIB_RX], &next0, b0, + sizeof (c0[0])); + + spd0 = pool_elt_at_index (im->spds, c0->spd_index); + + ip0 = vlib_buffer_get_current (b0); + esp0 = (esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0)); + + if (PREDICT_TRUE (ip0->protocol == IP_PROTOCOL_IPSEC_ESP)) + { +#if 0 + clib_warning + ("packet received from %U to %U spi %u size %u spd_id %u", + format_ip4_address, ip0->src_address.as_u8, + format_ip4_address, ip0->dst_address.as_u8, + clib_net_to_host_u32 (esp0->spi), + clib_net_to_host_u16 (ip0->length), spd0->id); +#endif + + p0 = ipsec_input_protect_policy_match (spd0, + clib_net_to_host_u32 + (ip0->src_address. + as_u32), + clib_net_to_host_u32 + (ip0->dst_address. + as_u32), + clib_net_to_host_u32 + (esp0->spi)); + + if (PREDICT_TRUE (p0 != 0)) + { + p0->counter.packets++; + p0->counter.bytes += clib_net_to_host_u16 (ip0->length); + vnet_buffer (b0)->ipsec.sad_index = p0->sa_index; + vnet_buffer (b0)->ipsec.flags = 0; + next0 = IPSEC_INPUT_NEXT_ESP_DECRYPT; + vlib_buffer_advance (b0, ip4_header_bytes (ip0)); + goto trace0; + } + } + + /* FIXME bypass and discard */ + + trace0: + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + ipsec_input_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + if (ip0->protocol == IP_PROTOCOL_IPSEC_ESP) + { + if (p0) + tr->sa_id = p0->sa_id; + tr->spi = clib_host_to_net_u32 (esp0->spi); + tr->seq = clib_host_to_net_u32 (esp0->seq); + } + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, + to_next, n_left_to_next, bi0, + next0); + } + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + vlib_node_increment_counter (vm, ipsec_input_ip4_node.index, + IPSEC_INPUT_ERROR_RX_PKTS, + from_frame->n_vectors); + + return from_frame->n_vectors; +} + + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (ipsec_input_ip4_node,static) = { + .function = ipsec_input_ip4_node_fn, + .name = "ipsec-input-ip4", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_input_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(ipsec_input_error_strings), + .error_strings = ipsec_input_error_strings, + + .n_next_nodes = IPSEC_INPUT_N_NEXT, + .next_nodes = { +#define _(s,n) [IPSEC_INPUT_NEXT_##s] = n, + foreach_ipsec_input_next +#undef _ + }, +}; +/* *INDENT-ON* */ + +VLIB_NODE_FUNCTION_MULTIARCH (ipsec_input_ip4_node, ipsec_input_ip4_node_fn) + static vlib_node_registration_t ipsec_input_ip6_node; + + static uword + ipsec_input_ip6_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, + vlib_frame_t * from_frame) +{ + u32 n_left_from, *from, next_index, *to_next; + ipsec_main_t *im = &ipsec_main; + + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + + next_index = node->cached_next_index; + + while (n_left_from > 0) + { + u32 n_left_to_next; + + vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next); + + while (n_left_from > 0 && n_left_to_next > 0) + { + u32 bi0, next0; + vlib_buffer_t *b0; + ip6_header_t *ip0; + esp_header_t *esp0; + ip4_ipsec_config_t *c0; + ipsec_spd_t *spd0; + ipsec_policy_t *p0 = 0; + u32 header_size = sizeof (ip0[0]); + + bi0 = to_next[0] = from[0]; + from += 1; + n_left_from -= 1; + to_next += 1; + n_left_to_next -= 1; + + b0 = vlib_get_buffer (vm, bi0); + c0 = + vnet_feature_next_with_data (vnet_buffer (b0)->sw_if_index + [VLIB_RX], &next0, b0, + sizeof (c0[0])); + + spd0 = pool_elt_at_index (im->spds, c0->spd_index); + + ip0 = vlib_buffer_get_current (b0); + esp0 = (esp_header_t *) ((u8 *) ip0 + header_size); + + if (PREDICT_TRUE (ip0->protocol == IP_PROTOCOL_IPSEC_ESP)) + { +#if 0 + clib_warning + ("packet received from %U to %U spi %u size %u spd_id %u", + format_ip6_address, &ip0->src_address, format_ip6_address, + &ip0->dst_address, clib_net_to_host_u32 (esp0->spi), + clib_net_to_host_u16 (ip0->payload_length) + header_size, + spd0->id); +#endif + p0 = ipsec_input_ip6_protect_policy_match (spd0, + &ip0->src_address, + &ip0->dst_address, + clib_net_to_host_u32 + (esp0->spi)); + + if (PREDICT_TRUE (p0 != 0)) + { + p0->counter.packets++; + p0->counter.bytes += + clib_net_to_host_u16 (ip0->payload_length); + p0->counter.bytes += header_size; + vnet_buffer (b0)->ipsec.sad_index = p0->sa_index; + vnet_buffer (b0)->ipsec.flags = 0; + next0 = IPSEC_INPUT_NEXT_ESP_DECRYPT; + vlib_buffer_advance (b0, header_size); + goto trace0; + } + } + + trace0: + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + ipsec_input_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + if (ip0->protocol == IP_PROTOCOL_IPSEC_ESP) + { + if (p0) + tr->sa_id = p0->sa_id; + tr->spi = clib_host_to_net_u32 (esp0->spi); + tr->seq = clib_host_to_net_u32 (esp0->seq); + } + } + + vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next, + n_left_to_next, bi0, next0); + } + vlib_put_next_frame (vm, node, next_index, n_left_to_next); + } + vlib_node_increment_counter (vm, ipsec_input_ip6_node.index, + IPSEC_INPUT_ERROR_RX_PKTS, + from_frame->n_vectors); + + return from_frame->n_vectors; +} + + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (ipsec_input_ip6_node,static) = { + .function = ipsec_input_ip6_node_fn, + .name = "ipsec-input-ip6", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_input_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(ipsec_input_error_strings), + .error_strings = ipsec_input_error_strings, + + .n_next_nodes = IPSEC_INPUT_N_NEXT, + .next_nodes = { +#define _(s,n) [IPSEC_INPUT_NEXT_##s] = n, + foreach_ipsec_input_next +#undef _ + }, +}; +/* *INDENT-ON* */ + +VLIB_NODE_FUNCTION_MULTIARCH (ipsec_input_ip6_node, ipsec_input_ip6_node_fn) +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ipsec/ipsec_output.c b/src/vnet/ipsec/ipsec_output.c new file mode 100644 index 00000000000..97977899132 --- /dev/null +++ b/src/vnet/ipsec/ipsec_output.c @@ -0,0 +1,478 @@ +/* + * ipsec_output.c : IPSec output node + * + * Copyright (c) 2015 Cisco and/or its affiliates. + * Licensed under the Apache License, Version 2.0 (the "License"); + * you may not use this file except in compliance with the License. + * You may obtain a copy of the License at: + * + * http://www.apache.org/licenses/LICENSE-2.0 + * + * Unless required by applicable law or agreed to in writing, software + * distributed under the License is distributed on an "AS IS" BASIS, + * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. + * See the License for the specific language governing permissions and + * limitations under the License. + */ + +#include +#include +#include + +#include + +#if DPDK_CRYPTO==1 +#define ESP_NODE "dpdk-esp-encrypt" +#else +#define ESP_NODE "esp-encrypt" +#endif + +#if IPSEC > 0 + +#define foreach_ipsec_output_next \ +_(DROP, "error-drop") \ +_(ESP_ENCRYPT, ESP_NODE) + +#define _(v, s) IPSEC_OUTPUT_NEXT_##v, +typedef enum +{ + foreach_ipsec_output_next +#undef _ + IPSEC_OUTPUT_N_NEXT, +} ipsec_output_next_t; + + +#define foreach_ipsec_output_error \ + _(RX_PKTS, "IPSec pkts received") \ + _(POLICY_DISCARD, "IPSec policy discard") \ + _(POLICY_NO_MATCH, "IPSec policy (no match)") \ + _(POLICY_PROTECT, "IPSec policy protect") \ + _(POLICY_BYPASS, "IPSec policy bypass") \ + _(ENCAPS_FAILED, "IPSec encapsulation failed") + + +typedef enum +{ +#define _(sym,str) IPSEC_OUTPUT_ERROR_##sym, + foreach_ipsec_output_error +#undef _ + IPSEC_DECAP_N_ERROR, +} ipsec_output_error_t; + +static char *ipsec_output_error_strings[] = { +#define _(sym,string) string, + foreach_ipsec_output_error +#undef _ +}; + +static vlib_node_registration_t ipsec_output_ip4_node; +static vlib_node_registration_t ipsec_output_ip6_node; + +typedef struct +{ + u32 spd_id; +} ipsec_output_trace_t; + +/* packet trace format function */ +static u8 * +format_ipsec_output_trace (u8 * s, va_list * args) +{ + CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *); + CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *); + ipsec_output_trace_t *t = va_arg (*args, ipsec_output_trace_t *); + + if (t->spd_id != ~0) + { + s = format (s, "spd %u ", t->spd_id); + } + else + { + s = format (s, "no spd"); + } + return s; +} + +always_inline ipsec_policy_t * +ipsec_output_policy_match (ipsec_spd_t * spd, u8 pr, u32 la, u32 ra, u16 lp, + u16 rp) +{ + ipsec_policy_t *p; + u32 *i; + + if (!spd) + return 0; + + vec_foreach (i, spd->ipv4_outbound_policies) + { + p = pool_elt_at_index (spd->policies, *i); + if (PREDICT_FALSE (p->protocol && (p->protocol != pr))) + continue; + + if (la < clib_net_to_host_u32 (p->laddr.start.ip4.as_u32)) + continue; + + if (la > clib_net_to_host_u32 (p->laddr.stop.ip4.as_u32)) + continue; + + if (ra < clib_net_to_host_u32 (p->raddr.start.ip4.as_u32)) + continue; + + if (ra > clib_net_to_host_u32 (p->raddr.stop.ip4.as_u32)) + continue; + + if (PREDICT_FALSE ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP))) + return p; + + if (lp < p->lport.start) + continue; + + if (lp > p->lport.stop) + continue; + + if (rp < p->rport.start) + continue; + + if (rp > p->rport.stop) + continue; + + return p; + } + return 0; +} + +always_inline uword +ip6_addr_match_range (ip6_address_t * a, ip6_address_t * la, + ip6_address_t * ua) +{ + if ((memcmp (a->as_u64, la->as_u64, 2 * sizeof (u64)) >= 0) && + (memcmp (a->as_u64, ua->as_u64, 2 * sizeof (u64)) <= 0)) + return 1; + return 0; +} + +always_inline ipsec_policy_t * +ipsec_output_ip6_policy_match (ipsec_spd_t * spd, + ip6_address_t * la, + ip6_address_t * ra, u16 lp, u16 rp, u8 pr) +{ + ipsec_policy_t *p; + u32 *i; + + if (!spd) + return 0; + + vec_foreach (i, spd->ipv6_outbound_policies) + { + p = pool_elt_at_index (spd->policies, *i); + if (PREDICT_FALSE (p->protocol && (p->protocol != pr))) + continue; + + if (!ip6_addr_match_range (ra, &p->raddr.start.ip6, &p->raddr.stop.ip6)) + continue; + + if (!ip6_addr_match_range (la, &p->laddr.start.ip6, &p->laddr.stop.ip6)) + continue; + + if (PREDICT_FALSE ((pr != IP_PROTOCOL_TCP) && (pr != IP_PROTOCOL_UDP))) + return p; + + if (lp < p->lport.start) + continue; + + if (lp > p->lport.stop) + continue; + + if (rp < p->rport.start) + continue; + + if (rp > p->rport.stop) + continue; + + return p; + } + + return 0; +} + +static inline uword +ipsec_output_inline (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * from_frame, int is_ipv6) +{ + ipsec_main_t *im = &ipsec_main; + + u32 *from, *to_next = 0; + u32 n_left_from, sw_if_index0, last_sw_if_index = (u32) ~ 0; + u32 next_node_index = (u32) ~ 0, last_next_node_index = (u32) ~ 0; + vlib_frame_t *f = 0; + u32 spd_index0 = ~0; + ipsec_spd_t *spd0 = 0; + u64 nc_protect = 0, nc_bypass = 0, nc_discard = 0, nc_nomatch = 0; + + from = vlib_frame_vector_args (from_frame); + n_left_from = from_frame->n_vectors; + + while (n_left_from > 0) + { + u32 bi0; + vlib_buffer_t *b0; + ipsec_policy_t *p0; + ip4_header_t *ip0; + ip6_header_t *ip6_0 = 0; + udp_header_t *udp0; + u32 iph_offset = 0; + + bi0 = from[0]; + b0 = vlib_get_buffer (vm, bi0); + sw_if_index0 = vnet_buffer (b0)->sw_if_index[VLIB_TX]; + iph_offset = vnet_buffer (b0)->ip.save_rewrite_length; + ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) + + iph_offset); + + /* lookup for SPD only if sw_if_index is changed */ + if (PREDICT_FALSE (last_sw_if_index != sw_if_index0)) + { + uword *p = hash_get (im->spd_index_by_sw_if_index, sw_if_index0); + ASSERT (p); + spd_index0 = p[0]; + spd0 = pool_elt_at_index (im->spds, spd_index0); + last_sw_if_index = sw_if_index0; + } + + if (is_ipv6) + { + ip6_0 = (ip6_header_t *) ((u8 *) vlib_buffer_get_current (b0) + + iph_offset); + + udp0 = ip6_next_header (ip6_0); +#if 0 + clib_warning + ("packet received from %U port %u to %U port %u spd_id %u", + format_ip6_address, &ip6_0->src_address, + clib_net_to_host_u16 (udp0->src_port), format_ip6_address, + &ip6_0->dst_address, clib_net_to_host_u16 (udp0->dst_port), + spd0->id); +#endif + + p0 = ipsec_output_ip6_policy_match (spd0, + &ip6_0->src_address, + &ip6_0->dst_address, + clib_net_to_host_u16 + (udp0->src_port), + clib_net_to_host_u16 + (udp0->dst_port), + ip6_0->protocol); + } + else + { + udp0 = (udp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0)); + +#if 0 + clib_warning ("packet received from %U to %U port %u", + format_ip4_address, ip0->src_address.as_u8, + format_ip4_address, ip0->dst_address.as_u8, + clib_net_to_host_u16 (udp0->dst_port)); + clib_warning ("sw_if_index0 %u spd_index0 %u spd_id %u", + sw_if_index0, spd_index0, spd0->id); +#endif + + p0 = ipsec_output_policy_match (spd0, ip0->protocol, + clib_net_to_host_u32 + (ip0->src_address.as_u32), + clib_net_to_host_u32 + (ip0->dst_address.as_u32), + clib_net_to_host_u16 + (udp0->src_port), + clib_net_to_host_u16 + (udp0->dst_port)); + } + + if (PREDICT_TRUE (p0 != NULL)) + { + if (p0->policy == IPSEC_POLICY_ACTION_PROTECT) + { + nc_protect++; + next_node_index = im->esp_encrypt_node_index; + vnet_buffer (b0)->ipsec.sad_index = p0->sa_index; + vlib_buffer_advance (b0, iph_offset); + p0->counter.packets++; + if (is_ipv6) + { + p0->counter.bytes += + clib_net_to_host_u16 (ip6_0->payload_length); + p0->counter.bytes += sizeof (ip6_header_t); + } + else + { + p0->counter.bytes += clib_net_to_host_u16 (ip0->length); + } + } + else if (p0->policy == IPSEC_POLICY_ACTION_BYPASS) + { + nc_bypass++; + next_node_index = get_next_output_feature_node_index (b0, node); + p0->counter.packets++; + if (is_ipv6) + { + p0->counter.bytes += + clib_net_to_host_u16 (ip6_0->payload_length); + p0->counter.bytes += sizeof (ip6_header_t); + } + else + { + p0->counter.bytes += clib_net_to_host_u16 (ip0->length); + } + } + else + { + nc_discard++; + p0->counter.packets++; + if (is_ipv6) + { + p0->counter.bytes += + clib_net_to_host_u16 (ip6_0->payload_length); + p0->counter.bytes += sizeof (ip6_header_t); + } + else + { + p0->counter.bytes += clib_net_to_host_u16 (ip0->length); + } + next_node_index = im->error_drop_node_index; + } + } + else + { + nc_nomatch++; + next_node_index = im->error_drop_node_index; + } + + from += 1; + n_left_from -= 1; + + if (PREDICT_FALSE ((last_next_node_index != next_node_index) || f == 0)) + { + /* if this is not 1st frame */ + if (f) + vlib_put_frame_to_node (vm, last_next_node_index, f); + + last_next_node_index = next_node_index; + + f = vlib_get_frame_to_node (vm, next_node_index); + to_next = vlib_frame_vector_args (f); + } + + to_next[0] = bi0; + to_next += 1; + f->n_vectors++; + + if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) + { + ipsec_output_trace_t *tr = + vlib_add_trace (vm, node, b0, sizeof (*tr)); + if (spd0) + tr->spd_id = spd0->id; + } + } + + vlib_put_frame_to_node (vm, next_node_index, f); + vlib_node_increment_counter (vm, node->node_index, + IPSEC_OUTPUT_ERROR_POLICY_PROTECT, nc_protect); + vlib_node_increment_counter (vm, node->node_index, + IPSEC_OUTPUT_ERROR_POLICY_BYPASS, nc_bypass); + vlib_node_increment_counter (vm, node->node_index, + IPSEC_OUTPUT_ERROR_POLICY_DISCARD, nc_discard); + vlib_node_increment_counter (vm, node->node_index, + IPSEC_OUTPUT_ERROR_POLICY_NO_MATCH, + nc_nomatch); + return from_frame->n_vectors; +} + +static uword +ipsec_output_ip4_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return ipsec_output_inline (vm, node, frame, 0); +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (ipsec_output_ip4_node,static) = { + .function = ipsec_output_ip4_node_fn, + .name = "ipsec-output-ip4", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_output_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(ipsec_output_error_strings), + .error_strings = ipsec_output_error_strings, + + .n_next_nodes = IPSEC_OUTPUT_N_NEXT, + .next_nodes = { +#define _(s,n) [IPSEC_OUTPUT_NEXT_##s] = n, + foreach_ipsec_output_next +#undef _ + }, +}; +/* *INDENT-ON* */ + +VLIB_NODE_FUNCTION_MULTIARCH (ipsec_output_ip4_node, ipsec_output_ip4_node_fn) + static uword + ipsec_output_ip6_node_fn (vlib_main_t * vm, vlib_node_runtime_t * node, + vlib_frame_t * frame) +{ + return ipsec_output_inline (vm, node, frame, 1); +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (ipsec_output_ip6_node,static) = { + .function = ipsec_output_ip6_node_fn, + .name = "ipsec-output-ip6", + .vector_size = sizeof (u32), + .format_trace = format_ipsec_output_trace, + .type = VLIB_NODE_TYPE_INTERNAL, + + .n_errors = ARRAY_LEN(ipsec_output_error_strings), + .error_strings = ipsec_output_error_strings, + + .n_next_nodes = IPSEC_OUTPUT_N_NEXT, + .next_nodes = { +#define _(s,n) [IPSEC_OUTPUT_NEXT_##s] = n, + foreach_ipsec_output_next +#undef _ + }, +}; +/* *INDENT-ON* */ + +VLIB_NODE_FUNCTION_MULTIARCH (ipsec_output_ip6_node, ipsec_output_ip6_node_fn) +#else /* IPSEC > 1 */ + +/* Dummy ipsec output node, in case when IPSec is disabled */ + +static uword +ipsec_output_node_fn (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame) +{ + clib_warning ("IPSec disabled"); + return 0; +} + +/* *INDENT-OFF* */ +VLIB_REGISTER_NODE (ipsec_output_node) = { + .vector_size = sizeof (u32), + .function = ipsec_output_node_fn, + .name = "ipsec-output-ip4", +}; + +VLIB_REGISTER_NODE (ipsec_output_node) = { + .vector_size = sizeof (u32), + .function = ipsec_output_node_fn, + .name = "ipsec-output-ip6", +}; +/* *INDENT-ON* */ +#endif + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ -- cgit 1.2.3-korg