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authorDamjan Marion <damarion@cisco.com>2017-02-28 19:22:22 +0100
committerDave Barach <openvpp@barachs.net>2017-03-01 22:06:31 +0000
commitc3a814be9dc769be942ff8029c7b6eccd4b3af05 (patch)
treedd152b3e92281ab52f806ed2ad237c9fb0607e8b /src/vnet/devices/dpdk/ipsec/esp_decrypt.c
parentf71ef1dddfc7cf34944c510b85bec074f431bb12 (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_decrypt.c')
-rw-r--r--src/vnet/devices/dpdk/ipsec/esp_decrypt.c594
1 files changed, 0 insertions, 594 deletions
diff --git a/src/vnet/devices/dpdk/ipsec/esp_decrypt.c b/src/vnet/devices/dpdk/ipsec/esp_decrypt.c
deleted file mode 100644
index 760076093cb..00000000000
--- a/src/vnet/devices/dpdk/ipsec/esp_decrypt.c
+++ /dev/null
@@ -1,594 +0,0 @@
-/*
- * esp_decrypt.c : IPSec ESP Decrypt 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_decrypt_next \
-_(DROP, "error-drop") \
-_(IP4_INPUT, "ip4-input") \
-_(IP6_INPUT, "ip6-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") \
- _(DECRYPTION_FAILED, "ESP decryption failed") \
- _(REPLAY, "SA replayed packet") \
- _(NOT_IP, "Not IP packet (dropped)") \
- _(ENQ_FAIL, "Enqueue failed (buffer full)") \
- _(NO_CRYPTODEV, "Cryptodev not configured") \
- _(BAD_LEN, "Invalid ciphertext length") \
- _(UNSUPPORTED, "Cipher/Auth not supported")
-
-
-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 _
-};
-
-vlib_node_registration_t dpdk_esp_decrypt_node;
-
-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;
-}
-
-static uword
-dpdk_esp_decrypt_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))
- {
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
- ESP_DECRYPT_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_DECRYPT_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, sa_index0 = ~0, seq, icv_size, iv_size;
- vlib_buffer_t * b0;
- esp_header_t * esp0;
- ipsec_sa_t * sa0;
- struct rte_mbuf * mb0 = 0;
- const int BLOCK_SIZE = 16;
- crypto_sa_session_t * sa_sess;
- void * sess;
- u16 qp_index;
- struct rte_crypto_op * cop = 0;
-
- bi0 = from[0];
- from += 1;
- n_left_from -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
- esp0 = vlib_buffer_get_current (b0);
-
- sa_index0 = vnet_buffer(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, dpdk_esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_REPLAY, 1);
- to_next[0] = bi0;
- to_next += 1;
- n_left_to_next -= 1;
- goto trace;
- }
- }
-
- sa0->total_data_size += b0->current_length;
-
- if (PREDICT_FALSE(sa0->integ_alg == IPSEC_INTEG_ALG_NONE) ||
- PREDICT_FALSE(sa0->crypto_alg == IPSEC_CRYPTO_ALG_NONE))
- {
- clib_warning ("SPI %u : only cipher + auth supported", sa0->spi);
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_UNSUPPORTED, 1);
- to_next[0] = bi0;
- to_next += 1;
- n_left_to_next -= 1;
- goto trace;
- }
-
- sa_sess = pool_elt_at_index(cwm->sa_sess_d[0], sa_index0);
-
- if (PREDICT_FALSE(!sa_sess->sess))
- {
- int ret = create_sym_sess(sa0, sa_sess, 0);
-
- if (PREDICT_FALSE (ret))
- {
- to_next[0] = bi0;
- to_next += 1;
- n_left_to_next -= 1;
- goto trace;
- }
- }
-
- sess = sa_sess->sess;
- qp_index = sa_sess->qp_index;
-
- 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;
-
- rte_crypto_op_attach_sym_session(cop, sess);
-
- icv_size = em->esp_integ_algs[sa0->integ_alg].trunc_size;
- iv_size = em->esp_crypto_algs[sa0->crypto_alg].iv_len;
-
- /* Convert vlib buffer to mbuf */
- 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;
-
- /* Outer IP header has already been stripped */
- u16 payload_len = rte_pktmbuf_pkt_len(mb0) - sizeof (esp_header_t) -
- iv_size - icv_size;
-
- if ((payload_len & (BLOCK_SIZE - 1)) || (payload_len <= 0))
- {
- clib_warning ("payload %u not multiple of %d\n",
- payload_len, BLOCK_SIZE);
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_BAD_LEN, 1);
- vec_add (vec_elt (cwm->qp_data, qp_index).free_cops, &cop, 1);
- bi_to_enq[qp_index] -= 1;
- cops_to_enq[qp_index] -= 1;
- n_cop_qp[qp_index] -= 1;
- to_next[0] = bi0;
- to_next += 1;
- n_left_to_next -= 1;
- goto trace;
- }
-
- struct rte_crypto_sym_op *sym_cop = (struct rte_crypto_sym_op *)(cop + 1);
-
- sym_cop->m_src = mb0;
- sym_cop->cipher.data.offset = sizeof (esp_header_t) + iv_size;
- sym_cop->cipher.data.length = payload_len;
-
- u8 *iv = rte_pktmbuf_mtod_offset(mb0, void*, sizeof (esp_header_t));
- dpdk_cop_priv_t * priv = (dpdk_cop_priv_t *)(sym_cop + 1);
-
- if (sa0->crypto_alg == IPSEC_CRYPTO_ALG_AES_GCM_128)
- {
- dpdk_gcm_cnt_blk *icb = &priv->cb;
- icb->salt = sa0->salt;
- clib_memcpy(icb->iv, iv, 8);
- icb->cnt = clib_host_to_net_u32(1);
- sym_cop->cipher.iv.data = (u8 *)icb;
- sym_cop->cipher.iv.phys_addr = cop->phys_addr +
- (uintptr_t)icb - (uintptr_t)cop;
- sym_cop->cipher.iv.length = 16;
-
- u8 *aad = priv->aad;
- clib_memcpy(aad, iv - sizeof(esp_header_t), 8);
- sym_cop->auth.aad.data = aad;
- sym_cop->auth.aad.phys_addr = cop->phys_addr +
- (uintptr_t)aad - (uintptr_t)cop;
- if (sa0->use_esn)
- {
- *((u32*)&aad[8]) = sa0->seq_hi;
- sym_cop->auth.aad.length = 12;
- }
- else
- {
- sym_cop->auth.aad.length = 8;
- }
-
- sym_cop->auth.digest.data = rte_pktmbuf_mtod_offset(mb0, void*,
- rte_pktmbuf_pkt_len(mb0) - icv_size);
- sym_cop->auth.digest.phys_addr = rte_pktmbuf_mtophys_offset(mb0,
- rte_pktmbuf_pkt_len(mb0) - icv_size);
- sym_cop->auth.digest.length = icv_size;
-
- }
- else
- {
- sym_cop->cipher.iv.data = rte_pktmbuf_mtod_offset(mb0, void*,
- sizeof (esp_header_t));
- sym_cop->cipher.iv.phys_addr = rte_pktmbuf_mtophys_offset(mb0,
- sizeof (esp_header_t));
- sym_cop->cipher.iv.length = iv_size;
-
- if (sa0->use_esn)
- {
- dpdk_cop_priv_t* priv = (dpdk_cop_priv_t*) (sym_cop + 1);
- u8* payload_end = rte_pktmbuf_mtod_offset(
- mb0, u8*, sizeof(esp_header_t) + iv_size + payload_len);
-
- clib_memcpy (priv->icv, payload_end, icv_size);
- *((u32*) payload_end) = sa0->seq_hi;
- sym_cop->auth.data.offset = 0;
- sym_cop->auth.data.length = sizeof(esp_header_t) + iv_size
- + payload_len + sizeof(sa0->seq_hi);
- sym_cop->auth.digest.data = priv->icv;
- sym_cop->auth.digest.phys_addr = cop->phys_addr
- + (uintptr_t) priv->icv - (uintptr_t) cop;
- sym_cop->auth.digest.length = icv_size;
- }
- else
- {
- sym_cop->auth.data.offset = 0;
- sym_cop->auth.data.length = sizeof(esp_header_t) +
- iv_size + payload_len;
-
- sym_cop->auth.digest.data = rte_pktmbuf_mtod_offset(mb0, void*,
- rte_pktmbuf_pkt_len(mb0) - icv_size);
- sym_cop->auth.digest.phys_addr = rte_pktmbuf_mtophys_offset(mb0,
- rte_pktmbuf_pkt_len(mb0) - icv_size);
- sym_cop->auth.digest.length = icv_size;
- }
- }
-
-trace:
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- esp_decrypt_trace_t *tr = vlib_add_trace (vm, node, b0, sizeof (*tr));
- 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_decrypt_node.index,
- ESP_DECRYPT_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_decrypt_node.index,
- ESP_DECRYPT_ERROR_ENQ_FAIL,
- n_cop_qp[i] - enq);
- }
- }
- /* *INDENT-ON* */
-
- return from_frame->n_vectors;
-}
-
-VLIB_REGISTER_NODE (dpdk_esp_decrypt_node) = {
- .function = dpdk_esp_decrypt_node_fn,
- .name = "dpdk-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 _
- },
-};
-
-VLIB_NODE_FUNCTION_MULTIARCH (dpdk_esp_decrypt_node, dpdk_esp_decrypt_node_fn)
-
-/*
- * Decrypt Post Node
- */
-
-#define foreach_esp_decrypt_post_error \
- _(PKTS, "ESP post pkts")
-
-typedef enum {
-#define _(sym,str) ESP_DECRYPT_POST_ERROR_##sym,
- foreach_esp_decrypt_post_error
-#undef _
- ESP_DECRYPT_POST_N_ERROR,
-} esp_decrypt_post_error_t;
-
-static char * esp_decrypt_post_error_strings[] = {
-#define _(sym,string) string,
- foreach_esp_decrypt_post_error
-#undef _
-};
-
-vlib_node_registration_t dpdk_esp_decrypt_post_node;
-
-static u8 * format_esp_decrypt_post_trace (u8 * s, va_list * args)
-{
- return s;
-}
-
-static uword
-dpdk_esp_decrypt_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;
- ipsec_sa_t * sa0;
- u32 sa_index0 = ~0;
- ipsec_main_t *im = &ipsec_main;
- dpdk_esp_main_t *em = &dpdk_esp_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)
- {
- esp_footer_t * f0;
- u32 bi0, next0, icv_size, iv_size;
- vlib_buffer_t * b0 = 0;
- ip4_header_t *ih4 = 0, *oh4 = 0;
- ip6_header_t *ih6 = 0, *oh6 = 0;
- u8 tunnel_mode = 1;
- u8 transport_ip6 = 0;
-
- next0 = ESP_DECRYPT_NEXT_DROP;
-
- bi0 = from[0];
- from += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
-
- sa_index0 = vnet_buffer(b0)->ipsec.sad_index;
- sa0 = pool_elt_at_index (im->sad, sa_index0);
-
- to_next[0] = bi0;
- to_next += 1;
-
- icv_size = em->esp_integ_algs[sa0->integ_alg].trunc_size;
- iv_size = em->esp_crypto_algs[sa0->crypto_alg].iv_len;
-
- if (sa0->use_anti_replay)
- {
- esp_header_t * esp0 = vlib_buffer_get_current (b0);
- u32 seq;
- seq = clib_host_to_net_u32(esp0->seq);
- if (PREDICT_TRUE(sa0->use_esn))
- esp_replay_advance_esn(sa0, seq);
- else
- esp_replay_advance(sa0, seq);
- }
-
- ih4 = (ip4_header_t *) (b0->data + sizeof(ethernet_header_t));
- vlib_buffer_advance (b0, sizeof (esp_header_t) + iv_size);
-
- b0->current_length -= (icv_size + 2);
- b0->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
- f0 = (esp_footer_t *) ((u8 *) vlib_buffer_get_current (b0) +
- b0->current_length);
- b0->current_length -= f0->pad_length;
-
- /* transport mode */
- if (PREDICT_FALSE(!sa0->is_tunnel && !sa0->is_tunnel_ip6))
- {
- tunnel_mode = 0;
-
- 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;
- else
- {
- clib_warning("next header: 0x%x", f0->next_header);
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_NOT_IP, 1);
- goto trace;
- }
- }
- }
-
- if (PREDICT_TRUE (tunnel_mode))
- {
- if (PREDICT_TRUE(f0->next_header == IP_PROTOCOL_IP_IN_IP))
- next0 = ESP_DECRYPT_NEXT_IP4_INPUT;
- 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, dpdk_esp_decrypt_node.index,
- ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
- 1);
- goto trace;
- }
- }
- /* transport mode */
- else
- {
- if (PREDICT_FALSE(transport_ip6))
- {
- ih6 = (ip6_header_t *) (b0->data + sizeof(ethernet_header_t));
- vlib_buffer_advance (b0, -sizeof(ip6_header_t));
- oh6 = vlib_buffer_get_current (b0);
- memmove(oh6, ih6, sizeof(ip6_header_t));
-
- next0 = ESP_DECRYPT_NEXT_IP6_INPUT;
- oh6->protocol = f0->next_header;
- oh6->payload_length =
- clib_host_to_net_u16 (
- vlib_buffer_length_in_chain(vm, b0) -
- sizeof (ip6_header_t));
- }
- else
- {
- vlib_buffer_advance (b0, -sizeof(ip4_header_t));
- oh4 = vlib_buffer_get_current (b0);
- memmove(oh4, ih4, sizeof(ip4_header_t));
-
- next0 = ESP_DECRYPT_NEXT_IP4_INPUT;
- oh4->ip_version_and_header_length = 0x45;
- oh4->fragment_id = 0;
- oh4->flags_and_fragment_offset = 0;
- oh4->protocol = f0->next_header;
- oh4->length = clib_host_to_net_u16 (
- vlib_buffer_length_in_chain (vm, b0));
- oh4->checksum = ip4_header_checksum (oh4);
- }
- }
-
- vnet_buffer (b0)->sw_if_index[VLIB_TX] = (u32)~0;
-
-trace:
- if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- esp_decrypt_trace_t *tr = vlib_add_trace (vm, node, 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, bi0, next0);
- }
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
- vlib_node_increment_counter (vm, dpdk_esp_decrypt_post_node.index,
- ESP_DECRYPT_POST_ERROR_PKTS,
- from_frame->n_vectors);
-
- return from_frame->n_vectors;
-}
-
-VLIB_REGISTER_NODE (dpdk_esp_decrypt_post_node) = {
- .function = dpdk_esp_decrypt_post_node_fn,
- .name = "dpdk-esp-decrypt-post",
- .vector_size = sizeof (u32),
- .format_trace = format_esp_decrypt_post_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(esp_decrypt_post_error_strings),
- .error_strings = esp_decrypt_post_error_strings,
-
- .n_next_nodes = ESP_DECRYPT_N_NEXT,
- .next_nodes = {
-#define _(s,n) [ESP_DECRYPT_NEXT_##s] = n,
- foreach_esp_decrypt_next
-#undef _
- },
-};
-
-VLIB_NODE_FUNCTION_MULTIARCH (dpdk_esp_decrypt_post_node, dpdk_esp_decrypt_post_node_fn)