diff options
author | Damjan Marion <damarion@cisco.com> | 2017-02-28 19:22:22 +0100 |
---|---|---|
committer | Dave Barach <openvpp@barachs.net> | 2017-03-01 22:06:31 +0000 |
commit | c3a814be9dc769be942ff8029c7b6eccd4b3af05 (patch) | |
tree | dd152b3e92281ab52f806ed2ad237c9fb0607e8b /src/vnet/devices/dpdk/ipsec/esp_encrypt.c | |
parent | f71ef1dddfc7cf34944c510b85bec074f431bb12 (diff) |
dpdk: be a plugin
Change-Id: I238258cdeb77035adc5e88903d824593d0a1da90
Signed-off-by: Damjan Marion <damarion@cisco.com>
Diffstat (limited to 'src/vnet/devices/dpdk/ipsec/esp_encrypt.c')
-rw-r--r-- | src/vnet/devices/dpdk/ipsec/esp_encrypt.c | 609 |
1 files changed, 0 insertions, 609 deletions
diff --git a/src/vnet/devices/dpdk/ipsec/esp_encrypt.c b/src/vnet/devices/dpdk/ipsec/esp_encrypt.c deleted file mode 100644 index 6eb1afc9501..00000000000 --- a/src/vnet/devices/dpdk/ipsec/esp_encrypt.c +++ /dev/null @@ -1,609 +0,0 @@ -/* - * esp_encrypt.c : IPSec ESP encrypt node using DPDK Cryptodev - * - * Copyright (c) 2016 Intel 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 <vnet/vnet.h> -#include <vnet/api_errno.h> -#include <vnet/ip/ip.h> - -#include <vnet/ipsec/ipsec.h> -#include <vnet/devices/dpdk/ipsec/ipsec.h> -#include <vnet/devices/dpdk/ipsec/esp.h> -#include <vnet/devices/dpdk/dpdk.h> -#include <vnet/devices/dpdk/dpdk_priv.h> - -#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") \ - _(SEQ_CYCLED, "sequence number cycled") \ - _(ENQ_FAIL, "Enqueue failed (buffer full)") \ - _(NO_CRYPTODEV, "Cryptodev not configured") \ - _(UNSUPPORTED, "Cipher/Auth not supported") - - -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 dpdk_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; -} - -static uword -dpdk_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, next_index; - ipsec_main_t *im = &ipsec_main; - u32 cpu_index = os_get_cpu_number (); - dpdk_crypto_main_t *dcm = &dpdk_crypto_main; - dpdk_esp_main_t *em = &dpdk_esp_main; - u32 i; - - from = vlib_frame_vector_args (from_frame); - n_left_from = from_frame->n_vectors; - - if (PREDICT_FALSE (!dcm->workers_main)) - { - /* Likely there are not enough cryptodevs, so drop frame */ - vlib_node_increment_counter (vm, dpdk_esp_encrypt_node.index, - ESP_ENCRYPT_ERROR_NO_CRYPTODEV, - n_left_from); - vlib_buffer_free (vm, from, n_left_from); - return n_left_from; - } - - crypto_worker_main_t *cwm = vec_elt_at_index (dcm->workers_main, cpu_index); - u32 n_qps = vec_len (cwm->qp_data); - struct rte_crypto_op **cops_to_enq[n_qps]; - u32 n_cop_qp[n_qps], *bi_to_enq[n_qps]; - - for (i = 0; i < n_qps; i++) - { - bi_to_enq[i] = cwm->qp_data[i].bi; - cops_to_enq[i] = cwm->qp_data[i].cops; - } - - memset (n_cop_qp, 0, n_qps * sizeof (u32)); - - crypto_alloc_cops (); - - next_index = ESP_ENCRYPT_NEXT_DROP; - - 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 = 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; - struct rte_mbuf *mb0 = 0; - esp_footer_t *f0; - u8 is_ipv6; - u8 ip_hdr_size; - u8 next_hdr_type; - u8 transport_mode = 0; - const int BLOCK_SIZE = 16; - u32 iv_size; - u16 orig_sz; - crypto_sa_session_t *sa_sess; - void *sess; - struct rte_crypto_op *cop = 0; - u16 qp_index; - - bi0 = from[0]; - from += 1; - n_left_from -= 1; - - b0 = vlib_get_buffer (vm, bi0); - sa_index0 = vnet_buffer (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, dpdk_esp_encrypt_node.index, - ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1); - //TODO: rekey SA - to_next[0] = bi0; - to_next += 1; - n_left_to_next -= 1; - goto trace; - } - - sa0->total_data_size += b0->current_length; - - sa_sess = pool_elt_at_index (cwm->sa_sess_d[1], sa_index0); - if (PREDICT_FALSE (!sa_sess->sess)) - { - int ret = create_sym_sess (sa0, sa_sess, 1); - - if (PREDICT_FALSE (ret)) - { - to_next[0] = bi0; - to_next += 1; - n_left_to_next -= 1; - goto trace; - } - } - - qp_index = sa_sess->qp_index; - sess = sa_sess->sess; - - ASSERT (vec_len (vec_elt (cwm->qp_data, qp_index).free_cops) > 0); - cop = vec_pop (vec_elt (cwm->qp_data, qp_index).free_cops); - ASSERT (cop->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED); - - cops_to_enq[qp_index][0] = cop; - cops_to_enq[qp_index] += 1; - n_cop_qp[qp_index] += 1; - bi_to_enq[qp_index][0] = bi0; - bi_to_enq[qp_index] += 1; - - ssize_t adv; - iv_size = em->esp_crypto_algs[sa0->crypto_alg].iv_len; - ih0 = vlib_buffer_get_current (b0); - orig_sz = b0->current_length; - is_ipv6 = (ih0->ip4.ip_version_and_header_length & 0xF0) == 0x60; - /* is ipv6 */ - if (PREDICT_TRUE (sa0->is_tunnel)) - { - if (PREDICT_TRUE (!is_ipv6)) - adv = -sizeof (ip4_and_esp_header_t); - else - adv = -sizeof (ip6_and_esp_header_t); - } - else - { - adv = -sizeof (esp_header_t); - if (PREDICT_TRUE (!is_ipv6)) - orig_sz -= sizeof (ip4_header_t); - else - orig_sz -= sizeof (ip6_header_t); - } - - /*transport mode save the eth header before it is overwritten */ - if (PREDICT_FALSE (!sa0->is_tunnel)) - { - ethernet_header_t *ieh0 = (ethernet_header_t *) - ((u8 *) vlib_buffer_get_current (b0) - - sizeof (ethernet_header_t)); - ethernet_header_t *oeh0 = - (ethernet_header_t *) ((u8 *) ieh0 + (adv - iv_size)); - clib_memcpy (oeh0, ieh0, sizeof (ethernet_header_t)); - } - - vlib_buffer_advance (b0, adv - iv_size); - - /* XXX IP6/ip4 and IP4/IP6 not supported, only IP4/IP4 and IP6/IP6 */ - - /* is ipv6 */ - if (PREDICT_FALSE (is_ipv6)) - { - ih6_0 = (ip6_and_esp_header_t *) ih0; - ip_hdr_size = sizeof (ip6_header_t); - oh6_0 = vlib_buffer_get_current (b0); - - if (PREDICT_TRUE (sa0->is_tunnel)) - { - next_hdr_type = IP_PROTOCOL_IPV6; - oh6_0->ip6.ip_version_traffic_class_and_flow_label = - ih6_0->ip6.ip_version_traffic_class_and_flow_label; - } - else - { - next_hdr_type = ih6_0->ip6.protocol; - memmove (oh6_0, ih6_0, sizeof (ip6_header_t)); - } - - oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP; - oh6_0->ip6.hop_limit = 254; - oh6_0->esp.spi = clib_net_to_host_u32 (sa0->spi); - oh6_0->esp.seq = clib_net_to_host_u32 (sa0->seq); - } - else - { - ip_hdr_size = sizeof (ip4_header_t); - oh0 = vlib_buffer_get_current (b0); - - if (PREDICT_TRUE (sa0->is_tunnel)) - { - next_hdr_type = IP_PROTOCOL_IP_IN_IP; - oh0->ip4.tos = ih0->ip4.tos; - } - else - { - next_hdr_type = ih0->ip4.protocol; - memmove (oh0, ih0, sizeof (ip4_header_t)); - } - - oh0->ip4.ip_version_and_header_length = 0x45; - oh0->ip4.fragment_id = 0; - oh0->ip4.flags_and_fragment_offset = 0; - oh0->ip4.ttl = 254; - oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP; - oh0->esp.spi = clib_net_to_host_u32 (sa0->spi); - oh0->esp.seq = clib_net_to_host_u32 (sa0->seq); - } - - if (PREDICT_TRUE (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; - - /* in tunnel mode send it back to FIB */ - next0 = ESP_ENCRYPT_NEXT_IP4_LOOKUP; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; - } - else if (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]; - - /* in tunnel mode send it back to FIB */ - next0 = ESP_ENCRYPT_NEXT_IP6_LOOKUP; - vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; - } - else - { - next0 = ESP_ENCRYPT_NEXT_INTERFACE_OUTPUT; - transport_mode = 1; - } - - ASSERT (sa0->crypto_alg < IPSEC_CRYPTO_N_ALG); - ASSERT (sa0->crypto_alg != IPSEC_CRYPTO_ALG_NONE); - - int blocks = 1 + (orig_sz + 1) / BLOCK_SIZE; - - /* pad packet in input buffer */ - u8 pad_bytes = BLOCK_SIZE * blocks - 2 - orig_sz; - u8 i; - u8 *padding = vlib_buffer_get_current (b0) + b0->current_length; - - for (i = 0; i < pad_bytes; ++i) - padding[i] = i + 1; - - f0 = vlib_buffer_get_current (b0) + b0->current_length + pad_bytes; - f0->pad_length = pad_bytes; - f0->next_header = next_hdr_type; - b0->current_length += pad_bytes + 2 + - em->esp_integ_algs[sa0->integ_alg].trunc_size; - - vnet_buffer (b0)->sw_if_index[VLIB_RX] = - vnet_buffer (b0)->sw_if_index[VLIB_RX]; - b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID; - - struct rte_crypto_sym_op *sym_cop; - sym_cop = (struct rte_crypto_sym_op *) (cop + 1); - - dpdk_cop_priv_t *priv = (dpdk_cop_priv_t *) (sym_cop + 1); - - vnet_buffer (b0)->unused[0] = next0; - - mb0 = rte_mbuf_from_vlib_buffer (b0); - mb0->data_len = b0->current_length; - mb0->pkt_len = b0->current_length; - mb0->data_off = RTE_PKTMBUF_HEADROOM + b0->current_data; - - rte_crypto_op_attach_sym_session (cop, sess); - - sym_cop->m_src = mb0; - - dpdk_gcm_cnt_blk *icb = &priv->cb; - icb->salt = sa0->salt; - icb->iv[0] = sa0->seq; - icb->iv[1] = sa0->seq_hi; - - if (sa0->crypto_alg == IPSEC_CRYPTO_ALG_AES_GCM_128) - { - icb->cnt = clib_host_to_net_u32 (1); - clib_memcpy (vlib_buffer_get_current (b0) + ip_hdr_size + - sizeof (esp_header_t), icb->iv, 8); - sym_cop->cipher.data.offset = - ip_hdr_size + sizeof (esp_header_t) + iv_size; - sym_cop->cipher.data.length = BLOCK_SIZE * blocks; - sym_cop->cipher.iv.length = 16; - } - else - { - sym_cop->cipher.data.offset = - ip_hdr_size + sizeof (esp_header_t); - sym_cop->cipher.data.length = BLOCK_SIZE * blocks + iv_size; - sym_cop->cipher.iv.length = iv_size; - } - - sym_cop->cipher.iv.data = (u8 *) icb; - sym_cop->cipher.iv.phys_addr = cop->phys_addr + (uintptr_t) icb - - (uintptr_t) cop; - - - ASSERT (sa0->integ_alg < IPSEC_INTEG_N_ALG); - ASSERT (sa0->integ_alg != IPSEC_INTEG_ALG_NONE); - - if (PREDICT_FALSE (sa0->integ_alg == IPSEC_INTEG_ALG_AES_GCM_128)) - { - u8 *aad = priv->aad; - clib_memcpy (aad, vlib_buffer_get_current (b0) + ip_hdr_size, - 8); - sym_cop->auth.aad.data = aad; - sym_cop->auth.aad.phys_addr = cop->phys_addr + - (uintptr_t) aad - (uintptr_t) cop; - - if (PREDICT_FALSE (sa0->use_esn)) - { - *((u32 *) & aad[8]) = sa0->seq_hi; - sym_cop->auth.aad.length = 12; - } - else - { - sym_cop->auth.aad.length = 8; - } - } - else - { - sym_cop->auth.data.offset = ip_hdr_size; - sym_cop->auth.data.length = b0->current_length - ip_hdr_size - - em->esp_integ_algs[sa0->integ_alg].trunc_size; - - if (PREDICT_FALSE (sa0->use_esn)) - { - u8 *payload_end = - vlib_buffer_get_current (b0) + b0->current_length; - *((u32 *) payload_end) = sa0->seq_hi; - sym_cop->auth.data.length += sizeof (sa0->seq_hi); - } - } - sym_cop->auth.digest.data = vlib_buffer_get_current (b0) + - b0->current_length - - em->esp_integ_algs[sa0->integ_alg].trunc_size; - sym_cop->auth.digest.phys_addr = rte_pktmbuf_mtophys_offset (mb0, - b0->current_length - - - em->esp_integ_algs - [sa0->integ_alg].trunc_size); - sym_cop->auth.digest.length = - em->esp_integ_algs[sa0->integ_alg].trunc_size; - - - if (PREDICT_FALSE (is_ipv6)) - { - oh6_0->ip6.payload_length = - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0) - - sizeof (ip6_header_t)); - } - else - { - oh0->ip4.length = - clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b0)); - oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4); - } - - if (transport_mode) - vlib_buffer_advance (b0, -sizeof (ethernet_header_t)); - - trace: - if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) - { - esp_encrypt_trace_t *tr = - vlib_add_trace (vm, node, 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_put_next_frame (vm, node, next_index, n_left_to_next); - } - vlib_node_increment_counter (vm, dpdk_esp_encrypt_node.index, - ESP_ENCRYPT_ERROR_RX_PKTS, - from_frame->n_vectors); - crypto_qp_data_t *qpd; - /* *INDENT-OFF* */ - vec_foreach_index (i, cwm->qp_data) - { - u32 enq; - - qpd = vec_elt_at_index(cwm->qp_data, i); - enq = rte_cryptodev_enqueue_burst(qpd->dev_id, qpd->qp_id, - qpd->cops, n_cop_qp[i]); - qpd->inflights += enq; - - if (PREDICT_FALSE(enq < n_cop_qp[i])) - { - crypto_free_cop (qpd, &qpd->cops[enq], n_cop_qp[i] - enq); - vlib_buffer_free (vm, &qpd->bi[enq], n_cop_qp[i] - enq); - - vlib_node_increment_counter (vm, dpdk_esp_encrypt_node.index, - ESP_ENCRYPT_ERROR_ENQ_FAIL, - n_cop_qp[i] - enq); - } - } - /* *INDENT-ON* */ - - return from_frame->n_vectors; -} - -VLIB_REGISTER_NODE (dpdk_esp_encrypt_node) = -{ - .function = dpdk_esp_encrypt_node_fn,.name = "dpdk-esp-encrypt",.flags = - VLIB_NODE_FLAG_IS_OUTPUT,.vector_size = sizeof (u32),.format_trace = - format_esp_encrypt_trace,.n_errors = - ARRAY_LEN (esp_encrypt_error_strings),.error_strings = - esp_encrypt_error_strings,.n_next_nodes = 1,.next_nodes = - { - [ESP_ENCRYPT_NEXT_DROP] = "error-drop",} -}; - -VLIB_NODE_FUNCTION_MULTIARCH (dpdk_esp_encrypt_node, dpdk_esp_encrypt_node_fn) -/* - * ESP Encrypt Post Node - */ -#define foreach_esp_encrypt_post_error \ - _(PKTS, "ESP post pkts") - typedef enum - { -#define _(sym,str) ESP_ENCRYPT_POST_ERROR_##sym, - foreach_esp_encrypt_post_error -#undef _ - ESP_ENCRYPT_POST_N_ERROR, - } esp_encrypt_post_error_t; - - static char *esp_encrypt_post_error_strings[] = { -#define _(sym,string) string, - foreach_esp_encrypt_post_error -#undef _ - }; - -vlib_node_registration_t dpdk_esp_encrypt_post_node; - -static u8 * -format_esp_encrypt_post_trace (u8 * s, va_list * args) -{ - return s; -} - -static uword -dpdk_esp_encrypt_post_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; - - 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 = 0; - - bi0 = from[0]; - from += 1; - n_left_from -= 1; - n_left_to_next -= 1; - - b0 = vlib_get_buffer (vm, bi0); - - to_next[0] = bi0; - to_next += 1; - - next0 = vnet_buffer (b0)->unused[0]; - - 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, dpdk_esp_encrypt_post_node.index, - ESP_ENCRYPT_POST_ERROR_PKTS, - from_frame->n_vectors); - - return from_frame->n_vectors; -} - -VLIB_REGISTER_NODE (dpdk_esp_encrypt_post_node) = -{ - .function = dpdk_esp_encrypt_post_node_fn,.name = - "dpdk-esp-encrypt-post",.vector_size = sizeof (u32),.format_trace = - format_esp_encrypt_post_trace,.type = VLIB_NODE_TYPE_INTERNAL,.n_errors = - ARRAY_LEN (esp_encrypt_post_error_strings),.error_strings = - esp_encrypt_post_error_strings,.n_next_nodes = - ESP_ENCRYPT_N_NEXT,.next_nodes = - { -#define _(s,n) [ESP_ENCRYPT_NEXT_##s] = n, - foreach_esp_encrypt_next -#undef _ - } -}; - -VLIB_NODE_FUNCTION_MULTIARCH (dpdk_esp_encrypt_post_node, - dpdk_esp_encrypt_post_node_fn) -/* - * fd.io coding-style-patch-verification: ON - * - * Local Variables: - * eval: (c-set-style "gnu") - * End: - */ |