/* * esp_encrypt.c : IPSec ESP encrypt node using DPDK Cryptodev * * Copyright (c) 2017 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/ipsec/esp.h> #include <vnet/udp/udp.h> #include <dpdk/buffer.h> #include <dpdk/ipsec/ipsec.h> #include <dpdk/device/dpdk.h> #include <dpdk/device/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 to crypto device") \ _(DISCARD, "Not enough crypto operations, discarding frame") \ _(SESSION, "Failed to get crypto session") \ _(NOSUP, "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 _ }; extern vlib_node_registration_t dpdk_esp4_encrypt_node; extern vlib_node_registration_t dpdk_esp6_encrypt_node; typedef struct { ipsec_crypto_alg_t crypto_alg; ipsec_integ_alg_t integ_alg; u8 packet_data[64]; } 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 *); ip4_header_t *ih4 = (ip4_header_t *) t->packet_data; u32 indent = format_get_indent (s), offset; s = format (s, "cipher %U auth %U\n", format_ipsec_crypto_alg, t->crypto_alg, format_ipsec_integ_alg, t->integ_alg); if ((ih4->ip_version_and_header_length & 0xF0) == 0x60) { s = format (s, "%U%U", format_white_space, indent, format_ip6_header, ih4); offset = sizeof (ip6_header_t); } else { s = format (s, "%U%U", format_white_space, indent, format_ip4_header, ih4); offset = ip4_header_bytes (ih4); } s = format (s, "\n%U%U", format_white_space, indent, format_esp_header, t->packet_data + offset); return s; } always_inline uword dpdk_esp_encrypt_inline (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame, int is_ip6, int is_tun) { u32 n_left_from, *from, *to_next, next_index, thread_index; ipsec_main_t *im = &ipsec_main; vnet_main_t *vnm = im->vnet_main; vnet_interface_main_t *vim = &vnm->interface_main; u32 thread_idx = vlib_get_thread_index (); dpdk_crypto_main_t *dcm = &dpdk_crypto_main; crypto_resource_t *res = 0; ipsec_sa_t *sa0 = 0; crypto_alg_t *cipher_alg = 0, *auth_alg = 0; struct rte_cryptodev_sym_session *session = 0; u32 ret, last_sa_index = ~0; u8 numa = rte_socket_id (); u8 is_aead = 0; crypto_worker_main_t *cwm = vec_elt_at_index (dcm->workers_main, thread_idx); struct rte_crypto_op **ops = cwm->ops; from = vlib_frame_vector_args (from_frame); n_left_from = from_frame->n_vectors; thread_index = vm->thread_index; ret = crypto_alloc_ops (numa, ops, n_left_from); if (ret) { if (is_ip6) vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index, ESP_ENCRYPT_ERROR_DISCARD, 1); else vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index, ESP_ENCRYPT_ERROR_DISCARD, 1); /* Discard whole frame */ return n_left_from; } 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) { clib_error_t *error; u32 bi0, bi1; vlib_buffer_t *b0, *b1; u32 sa_index0; ip4_and_esp_header_t *ih0, *oh0 = 0; ip6_and_esp_header_t *ih6_0, *oh6_0 = 0; ip4_and_udp_and_esp_header_t *ouh0 = 0; esp_header_t *esp0; esp_footer_t *f0; u8 next_hdr_type; u32 iv_size; u16 orig_sz; u8 trunc_size; u16 rewrite_len; u16 udp_encap_adv = 0; struct rte_mbuf *mb0; struct rte_crypto_op *op; u16 res_idx; bi0 = from[0]; from += 1; n_left_from -= 1; b0 = vlib_get_buffer (vm, bi0); ih0 = vlib_buffer_get_current (b0); mb0 = rte_mbuf_from_vlib_buffer (b0); /* ih0/ih6_0 */ CLIB_PREFETCH (ih0, sizeof (ih6_0[0]), LOAD); /* f0 */ CLIB_PREFETCH (vlib_buffer_get_tail (b0), 20, STORE); /* mb0 */ CLIB_PREFETCH (mb0, CLIB_CACHE_LINE_BYTES, STORE); if (n_left_from > 1) { bi1 = from[1]; b1 = vlib_get_buffer (vm, bi1); CLIB_PREFETCH (b1, CLIB_CACHE_LINE_BYTES, LOAD); CLIB_PREFETCH (b1->data - CLIB_CACHE_LINE_BYTES, CLIB_CACHE_LINE_BYTES, STORE); } op = ops[0]; ops += 1; ASSERT (op->status == RTE_CRYPTO_OP_STATUS_NOT_PROCESSED); dpdk_op_priv_t *priv = crypto_op_get_priv (op); /* store bi in op private */ priv->bi = bi0; priv->encrypt = 1; u16 op_len = sizeof (op[0]) + sizeof (op[0].sym[0]) + sizeof (priv[0]); CLIB_PREFETCH (op, op_len, STORE); if (is_tun) { u32 tmp; /* we are on a ipsec tunnel's feature arc */ sa_index0 = *(u32 *) vnet_feature_next_with_data (&tmp, b0, sizeof (sa_index0)); } else sa_index0 = vnet_buffer (b0)->ipsec.sad_index; if (sa_index0 != last_sa_index) { sa0 = pool_elt_at_index (im->sad, sa_index0); cipher_alg = vec_elt_at_index (dcm->cipher_algs, sa0->crypto_alg); auth_alg = vec_elt_at_index (dcm->auth_algs, sa0->integ_alg); is_aead = (cipher_alg->type == RTE_CRYPTO_SYM_XFORM_AEAD); if (is_aead) auth_alg = cipher_alg; res_idx = get_resource (cwm, sa0); if (PREDICT_FALSE (res_idx == (u16) ~ 0)) { clib_warning ("unsupported SA by thread index %u", thread_idx); if (is_ip6) vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index, ESP_ENCRYPT_ERROR_NOSUP, 1); else vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index, ESP_ENCRYPT_ERROR_NOSUP, 1); to_next[0] = bi0; to_next += 1; n_left_to_next -= 1; goto trace; } res = vec_elt_at_index (dcm->resource, res_idx); error = crypto_get_session (&session, sa_index0, res, cwm, 1); if (PREDICT_FALSE (error || !session)) { clib_warning ("failed to get crypto session"); if (is_ip6) vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index, ESP_ENCRYPT_ERROR_SESSION, 1); else vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index, ESP_ENCRYPT_ERROR_SESSION, 1); to_next[0] = bi0; to_next += 1; n_left_to_next -= 1; goto trace; } last_sa_index = sa_index0; } if (PREDICT_FALSE (esp_seq_advance (sa0))) { clib_warning ("sequence number counter has cycled SPI %u (0x%08x)", sa0->spi, sa0->spi); if (is_ip6) vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index, ESP_ENCRYPT_ERROR_SEQ_CYCLED, 1); else vlib_node_increment_counter (vm, dpdk_esp4_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; } orig_sz = b0->current_length; /* TODO multi-seg support - total_length_not_including_first_buffer */ vlib_increment_combined_counter (&ipsec_sa_counters, thread_index, sa_index0, 1, b0->current_length); /* Update tunnel interface tx counters */ if (is_tun) vlib_increment_combined_counter (vim->combined_sw_if_counters + VNET_INTERFACE_COUNTER_TX, thread_index, vnet_buffer (b0)->sw_if_index[VLIB_TX], 1, b0->current_length); res->ops[res->n_ops] = op; res->bi[res->n_ops] = bi0; res->n_ops += 1; dpdk_gcm_cnt_blk *icb = &priv->cb; crypto_set_icb (icb, sa0->salt, sa0->seq, sa0->seq_hi); iv_size = cipher_alg->iv_len; trunc_size = auth_alg->trunc_size; /* if UDP encapsulation is used adjust the address of the IP header */ if (ipsec_sa_is_set_UDP_ENCAP (sa0) && !is_ip6) udp_encap_adv = sizeof (udp_header_t); if (ipsec_sa_is_set_IS_TUNNEL (sa0)) { rewrite_len = 0; if (!is_ip6 && !ipsec_sa_is_set_IS_TUNNEL_V6 (sa0)) /* ip4inip4 */ { /* in tunnel mode send it back to FIB */ priv->next = DPDK_CRYPTO_INPUT_NEXT_IP4_LOOKUP; u8 adv = sizeof (ip4_header_t) + udp_encap_adv + sizeof (esp_header_t) + iv_size; vlib_buffer_advance (b0, -adv); oh0 = vlib_buffer_get_current (b0); ouh0 = vlib_buffer_get_current (b0); next_hdr_type = IP_PROTOCOL_IP_IN_IP; /* * 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.checksum_data_64[0] = clib_host_to_net_u64 (0x45ULL << 56); /* * oh0->ip4.ttl = 254; * oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP; */ oh0->ip4.checksum_data_32[2] = clib_host_to_net_u32 (0xfe320000); 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; if (ipsec_sa_is_set_UDP_ENCAP (sa0)) { oh0->ip4.protocol = IP_PROTOCOL_UDP; esp0 = &ouh0->esp; } else esp0 = &oh0->esp; esp0->spi = clib_host_to_net_u32 (sa0->spi); esp0->seq = clib_host_to_net_u32 (sa0->seq); } else if (is_ip6 && ipsec_sa_is_set_IS_TUNNEL_V6 (sa0)) { /* ip6inip6 */ /* in tunnel mode send it back to FIB */ priv->next = DPDK_CRYPTO_INPUT_NEXT_IP6_LOOKUP; u8 adv = sizeof (ip6_header_t) + sizeof (esp_header_t) + iv_size; vlib_buffer_advance (b0, -adv); ih6_0 = (ip6_and_esp_header_t *) ih0; oh6_0 = vlib_buffer_get_current (b0); 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; oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP; oh6_0->ip6.hop_limit = 254; 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]; esp0 = &oh6_0->esp; oh6_0->esp.spi = clib_host_to_net_u32 (sa0->spi); oh6_0->esp.seq = clib_host_to_net_u32 (sa0->seq); } else /* unsupported ip4inip6, ip6inip4 */ { if (is_ip6) vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index, ESP_ENCRYPT_ERROR_NOSUP, 1); else vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index, ESP_ENCRYPT_ERROR_NOSUP, 1); to_next[0] = bi0; to_next += 1; n_left_to_next -= 1; goto trace; } vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32) ~ 0; } else /* transport mode */ { priv->next = DPDK_CRYPTO_INPUT_NEXT_INTERFACE_OUTPUT; rewrite_len = vnet_buffer (b0)->ip.save_rewrite_length; u16 adv = sizeof (esp_header_t) + iv_size + udp_encap_adv; vlib_buffer_advance (b0, -adv - rewrite_len); u8 *src = ((u8 *) ih0) - rewrite_len; u8 *dst = vlib_buffer_get_current (b0); oh0 = vlib_buffer_get_current (b0) + rewrite_len; if (is_ip6) { orig_sz -= sizeof (ip6_header_t); ih6_0 = (ip6_and_esp_header_t *) ih0; next_hdr_type = ih6_0->ip6.protocol; memmove (dst, src, rewrite_len + sizeof (ip6_header_t)); oh6_0 = (ip6_and_esp_header_t *) oh0; oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_ESP; esp0 = &oh6_0->esp; } else /* ipv4 */ { u16 ip_size = ip4_header_bytes (&ih0->ip4); orig_sz -= ip_size; next_hdr_type = ih0->ip4.protocol; memmove (dst, src, rewrite_len + ip_size); oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP; esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size); if (ipsec_sa_is_set_UDP_ENCAP (sa0)) { oh0->ip4.protocol = IP_PROTOCOL_UDP; esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size + udp_encap_adv); } else { oh0->ip4.protocol = IP_PROTOCOL_IPSEC_ESP; esp0 = (esp_header_t *) (((u8 *) oh0) + ip_size); } } esp0->spi = clib_host_to_net_u32 (sa0->spi); esp0->seq = clib_host_to_net_u32 (sa0->seq); } if (ipsec_sa_is_set_UDP_ENCAP (sa0) && ouh0) { ouh0->udp.src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec); ouh0->udp.dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipsec); ouh0->udp.checksum = 0; } ASSERT (is_pow2 (cipher_alg->boundary)); u16 mask = cipher_alg->boundary - 1; u16 pad_payload_len = ((orig_sz + 2) + mask) & ~mask; u8 pad_bytes = pad_payload_len - 2 - orig_sz; u8 *padding = vlib_buffer_put_uninit (b0, pad_bytes + 2 + trunc_size); /* The extra pad bytes would be overwritten by the digest */ if (pad_bytes) clib_memcpy_fast (padding, pad_data, 16); f0 = (esp_footer_t *) (padding + pad_bytes); f0->pad_length = pad_bytes; f0->next_header = next_hdr_type; if (is_ip6) { u16 len = b0->current_length - sizeof (ip6_header_t); oh6_0->ip6.payload_length = clib_host_to_net_u16 (len - rewrite_len); } else { oh0->ip4.length = clib_host_to_net_u16 (b0->current_length - rewrite_len); oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4); if (ipsec_sa_is_set_UDP_ENCAP (sa0) && ouh0) { ouh0->udp.length = clib_host_to_net_u16 (clib_net_to_host_u16 (ouh0->ip4.length) - ip4_header_bytes (&ouh0->ip4)); } } b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID; /* mbuf packet starts at ESP header */ mb0->data_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0); mb0->pkt_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0); mb0->data_off = ((void *) esp0) - mb0->buf_addr; u32 cipher_off, cipher_len, auth_len = 0; u32 *aad = NULL; u8 *digest = vlib_buffer_get_tail (b0) - trunc_size; u64 digest_paddr = mb0->buf_physaddr + digest - ((u8 *) mb0->buf_addr); if (!is_aead && cipher_alg->alg == RTE_CRYPTO_CIPHER_AES_CBC) { cipher_off = sizeof (esp_header_t); cipher_len = iv_size + pad_payload_len; } else /* CTR/GCM */ { u32 *esp_iv = (u32 *) (esp0 + 1); esp_iv[0] = sa0->seq; esp_iv[1] = sa0->seq_hi; cipher_off = sizeof (esp_header_t) + iv_size; cipher_len = pad_payload_len; } if (is_aead) { aad = (u32 *) priv->aad; aad[0] = clib_host_to_net_u32 (sa0->spi); aad[1] = clib_host_to_net_u32 (sa0->seq); /* aad[3] should always be 0 */ if (PREDICT_FALSE (ipsec_sa_is_set_USE_ESN (sa0))) aad[2] = clib_host_to_net_u32 (sa0->seq_hi); else aad[2] = 0; } else { auth_len = vlib_buffer_get_tail (b0) - ((u8 *) esp0) - trunc_size; if (ipsec_sa_is_set_USE_ESN (sa0)) { u32 *_digest = (u32 *) digest; _digest[0] = clib_host_to_net_u32 (sa0->seq_hi); auth_len += 4; } } crypto_op_setup (is_aead, mb0, op, session, cipher_off, cipher_len, 0, auth_len, (u8 *) aad, digest, digest_paddr); trace: if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED)) { esp_encrypt_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr)); tr->crypto_alg = sa0->crypto_alg; tr->integ_alg = sa0->integ_alg; u8 *p = vlib_buffer_get_current (b0); if (!ipsec_sa_is_set_IS_TUNNEL (sa0)) p += vnet_buffer (b0)->ip.save_rewrite_length; clib_memcpy_fast (tr->packet_data, p, sizeof (tr->packet_data)); } } vlib_put_next_frame (vm, node, next_index, n_left_to_next); } if (is_ip6) { vlib_node_increment_counter (vm, dpdk_esp6_encrypt_node.index, ESP_ENCRYPT_ERROR_RX_PKTS, from_frame->n_vectors); crypto_enqueue_ops (vm, cwm, dpdk_esp6_encrypt_node.index, ESP_ENCRYPT_ERROR_ENQ_FAIL, numa, 1 /* encrypt */ ); } else { vlib_node_increment_counter (vm, dpdk_esp4_encrypt_node.index, ESP_ENCRYPT_ERROR_RX_PKTS, from_frame->n_vectors); crypto_enqueue_ops (vm, cwm, dpdk_esp4_encrypt_node.index, ESP_ENCRYPT_ERROR_ENQ_FAIL, numa, 1 /* encrypt */ ); } crypto_free_ops (numa, ops, cwm->ops + from_frame->n_vectors - ops); return from_frame->n_vectors; } VLIB_NODE_FN (dpdk_esp4_encrypt_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return dpdk_esp_encrypt_inline (vm, node, from_frame, 0 /*is_ip6 */ , 0); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (dpdk_esp4_encrypt_node) = { .name = "dpdk-esp4-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", } }; /* *INDENT-ON* */ VLIB_NODE_FN (dpdk_esp6_encrypt_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return dpdk_esp_encrypt_inline (vm, node, from_frame, 1 /*is_ip6 */ , 0); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (dpdk_esp6_encrypt_node) = { .name = "dpdk-esp6-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", } }; /* *INDENT-ON* */ VLIB_NODE_FN (dpdk_esp4_encrypt_tun_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return dpdk_esp_encrypt_inline (vm, node, from_frame, 0 /*is_ip6 */ , 1); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (dpdk_esp4_encrypt_tun_node) = { .name = "dpdk-esp4-encrypt-tun", .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", } }; VNET_FEATURE_INIT (dpdk_esp4_encrypt_tun_feat_node, static) = { .arc_name = "ip4-output", .node_name = "dpdk-esp4-encrypt-tun", .runs_before = VNET_FEATURES ("adj-midchain-tx"), }; /* *INDENT-ON* */ VLIB_NODE_FN (dpdk_esp6_encrypt_tun_node) (vlib_main_t * vm, vlib_node_runtime_t * node, vlib_frame_t * from_frame) { return dpdk_esp_encrypt_inline (vm, node, from_frame, 1 /*is_ip6 */ , 1); } /* *INDENT-OFF* */ VLIB_REGISTER_NODE (dpdk_esp6_encrypt_tun_node) = { .name = "dpdk-esp6-encrypt-tun", .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", } }; VNET_FEATURE_INIT (dpdk_esp6_encrypt_tun_feat_node, static) = { .arc_name = "ip6-output", .node_name = "dpdk-esp6-encrypt-tun", .runs_before = VNET_FEATURES ("adj-midchain-tx"), }; /* *INDENT-ON* */ /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */