diff options
Diffstat (limited to 'vnet/vnet/ipsec/ipsec_output.c')
| -rw-r--r-- | vnet/vnet/ipsec/ipsec_output.c | 478 |
1 files changed, 0 insertions, 478 deletions
diff --git a/vnet/vnet/ipsec/ipsec_output.c b/vnet/vnet/ipsec/ipsec_output.c deleted file mode 100644 index 97977899132..00000000000 --- a/vnet/vnet/ipsec/ipsec_output.c +++ /dev/null @@ -1,478 +0,0 @@ -/* - * 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 <vnet/vnet.h> -#include <vnet/api_errno.h> -#include <vnet/ip/ip.h> - -#include <vnet/ipsec/ipsec.h> - -#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: - */ |