--- /dev/null
+/*
+ * esp_decrypt.c : IPSec ESP Decrypt 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 opy 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 <dpdk/buffer.h>
+#include <dpdk/ipsec/ipsec.h>
+#include <dpdk/device/dpdk.h>
+#include <dpdk/device/dpdk_priv.h>
+
+#define foreach_esp_decrypt_next \
+_(DROP, "error-drop") \
+_(IP4_INPUT, "ip4-input-no-checksum") \
+_(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 decrypt failed (queue full)") \
+ _(DISCARD, "Not enough crypto operations") \
+ _(BAD_LEN, "Invalid ciphertext length") \
+ _(SESSION, "Failed to get crypto session") \
+ _(NOSUP, "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 _
+};
+
+extern vlib_node_registration_t dpdk_esp4_decrypt_node;
+extern vlib_node_registration_t dpdk_esp6_decrypt_node;
+
+typedef struct
+{
+ ipsec_crypto_alg_t crypto_alg;
+ ipsec_integ_alg_t integ_alg;
+ u8 packet_data[64];
+} 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 *);
+ u32 indent = format_get_indent (s);
+
+ s = format (s, "cipher %U auth %U\n",
+ format_ipsec_crypto_alg, t->crypto_alg,
+ format_ipsec_integ_alg, t->integ_alg);
+ s = format (s, "%U%U",
+ format_white_space, indent, format_esp_header, t->packet_data);
+ return s;
+}
+
+always_inline uword
+dpdk_esp_decrypt_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame, int is_ip6)
+{
+ u32 n_left_from, *from, *to_next, next_index, thread_index;
+ 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_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DISCARD, n_left_from);
+ else
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DISCARD, n_left_from);
+ /* Discard whole frame */
+ vlib_buffer_free (vm, from, n_left_from);
+ return n_left_from;
+ }
+
+ 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)
+ {
+ clib_error_t *error;
+ u32 bi0, sa_index0, iv_size;
+ u8 trunc_size;
+ vlib_buffer_t *b0;
+ esp_header_t *esp0;
+ 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);
+ mb0 = rte_mbuf_from_vlib_buffer (b0);
+ esp0 = vlib_buffer_get_current (b0);
+
+ /* ih0/ih6_0 */
+ CLIB_PREFETCH (esp0, sizeof (esp0[0]) + 16, LOAD);
+ /* mb0 */
+ CLIB_PREFETCH (mb0, 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 = 0;
+
+ u16 op_len =
+ sizeof (op[0]) + sizeof (op[0].sym[0]) + sizeof (priv[0]);
+ CLIB_PREFETCH (op, op_len, STORE);
+
+ sa_index0 = vnet_buffer (b0)->ipsec.sad_index;
+ vlib_prefetch_combined_counter (&ipsec_sa_counters,
+ thread_index, sa_index0);
+
+ if (sa_index0 != last_sa_index)
+ {
+ sa0 = ipsec_sa_get (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))
+ {
+ if (is_ip6)
+ vlib_node_increment_counter (vm,
+ dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_NOSUP, 1);
+ else
+ vlib_node_increment_counter (vm,
+ dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_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, 0);
+ if (PREDICT_FALSE (error || !session))
+ {
+ if (is_ip6)
+ vlib_node_increment_counter (vm,
+ dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_SESSION,
+ 1);
+ else
+ vlib_node_increment_counter (vm,
+ dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_SESSION,
+ 1);
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+ goto trace;
+ }
+
+ last_sa_index = sa_index0;
+ }
+
+ /* anti-replay check */
+ if (ipsec_sa_anti_replay_check
+ (sa0, clib_host_to_net_u32 (esp0->seq)))
+ {
+ if (is_ip6)
+ vlib_node_increment_counter (vm,
+ dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_REPLAY, 1);
+ else
+ vlib_node_increment_counter (vm,
+ dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_REPLAY, 1);
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+ goto trace;
+ }
+
+ if (is_ip6)
+ priv->next = DPDK_CRYPTO_INPUT_NEXT_DECRYPT6_POST;
+ else
+ {
+ priv->next = DPDK_CRYPTO_INPUT_NEXT_DECRYPT4_POST;
+ b0->flags |= VNET_BUFFER_F_IS_IP4;
+ }
+
+ /* FIXME multi-seg */
+ vlib_increment_combined_counter
+ (&ipsec_sa_counters, thread_index, sa_index0,
+ 1, b0->current_length);
+
+ res->ops[res->n_ops] = op;
+ res->bi[res->n_ops] = bi0;
+ res->n_ops += 1;
+
+ /* Convert vlib buffer to mbuf */
+ mb0->data_len = b0->current_length;
+ mb0->pkt_len = b0->current_length;
+ mb0->data_off = RTE_PKTMBUF_HEADROOM + b0->current_data;
+
+ trunc_size = auth_alg->trunc_size;
+ iv_size = cipher_alg->iv_len;
+
+ /* Outer IP header has already been stripped */
+ u16 payload_len =
+ b0->current_length - sizeof (esp_header_t) - iv_size - trunc_size;
+
+ ASSERT (payload_len >= 4);
+
+ if (payload_len & (cipher_alg->boundary - 1))
+ {
+ if (is_ip6)
+ vlib_node_increment_counter (vm, dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_BAD_LEN, 1);
+ else
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_BAD_LEN, 1);
+ res->n_ops -= 1;
+ to_next[0] = bi0;
+ to_next += 1;
+ n_left_to_next -= 1;
+ goto trace;
+ }
+
+ u32 cipher_off, cipher_len;
+ u32 auth_len = 0;
+ u8 *aad = NULL;
+
+ u8 *iv = (u8 *) (esp0 + 1);
+
+ dpdk_gcm_cnt_blk *icb = &priv->cb;
+
+ cipher_off = sizeof (esp_header_t) + iv_size;
+ cipher_len = payload_len;
+
+ u8 *digest = vlib_buffer_get_tail (b0) - trunc_size;
+ u64 digest_paddr = mb0->buf_iova + digest - ((u8 *) mb0->buf_addr);
+
+ if (!is_aead && cipher_alg->alg == RTE_CRYPTO_CIPHER_AES_CBC)
+ clib_memcpy_fast (icb, iv, 16);
+ else /* CTR/GCM */
+ {
+ u32 *_iv = (u32 *) iv;
+
+ crypto_set_icb (icb, sa0->salt, _iv[0], _iv[1]);
+ }
+
+ if (is_aead)
+ {
+ aad = priv->aad;
+ u32 *_aad = (u32 *) aad;
+ clib_memcpy_fast (aad, esp0, 8);
+
+ /* _aad[3] should always be 0 */
+ if (PREDICT_FALSE (ipsec_sa_is_set_USE_ESN (sa0)))
+ {
+ _aad[2] = _aad[1];
+ _aad[1] = clib_host_to_net_u32 (sa0->seq_hi);
+ }
+ else
+ _aad[2] = 0;
+ }
+ else
+ {
+ auth_len = sizeof (esp_header_t) + iv_size + payload_len;
+
+ if (ipsec_sa_is_set_USE_ESN (sa0))
+ {
+ clib_memcpy_fast (priv->icv, digest, trunc_size);
+ u32 *_digest = (u32 *) digest;
+ _digest[0] = clib_host_to_net_u32 (sa0->seq_hi);
+ auth_len += sizeof (sa0->seq_hi);
+
+ digest = priv->icv;
+ digest_paddr =
+ op->phys_addr + (uintptr_t) priv->icv - (uintptr_t) op;
+ }
+ }
+
+ crypto_op_setup (is_aead, mb0, op, session, cipher_off, cipher_len,
+ 0, auth_len, aad, digest, digest_paddr);
+ 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;
+ clib_memcpy_fast (tr->packet_data, vlib_buffer_get_current (b0),
+ sizeof (esp_header_t));
+ }
+ }
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+
+ if (is_ip6)
+ {
+ vlib_node_increment_counter (vm, dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
+
+ crypto_enqueue_ops (vm, cwm, dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_ENQ_FAIL, numa, 0 /* encrypt */ );
+ }
+ else
+ {
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_RX_PKTS,
+ from_frame->n_vectors);
+
+ crypto_enqueue_ops (vm, cwm, dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_ENQ_FAIL, numa, 0 /* encrypt */ );
+ }
+
+ crypto_free_ops (numa, ops, cwm->ops + from_frame->n_vectors - ops);
+
+ return from_frame->n_vectors;
+}
+
+VLIB_NODE_FN (dpdk_esp4_decrypt_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return dpdk_esp_decrypt_inline (vm, node, from_frame, 0 /*is_ip6 */ );
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dpdk_esp4_decrypt_node) = {
+ .name = "dpdk-esp4-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_FN (dpdk_esp6_decrypt_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return dpdk_esp_decrypt_inline (vm, node, from_frame, 1 /*is_ip6 */ );
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dpdk_esp6_decrypt_node) = {
+ .name = "dpdk-esp6-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* */
+
+/*
+ * 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 _
+};
+
+extern vlib_node_registration_t dpdk_esp4_decrypt_post_node;
+extern vlib_node_registration_t dpdk_esp6_decrypt_post_node;
+
+static u8 *
+format_esp_decrypt_post_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 *);
+ u32 indent = format_get_indent (s);
+
+ s = format (s, "cipher %U auth %U\n",
+ format_ipsec_crypto_alg, t->crypto_alg,
+ format_ipsec_integ_alg, t->integ_alg);
+
+ ip4_header_t *ih4 = (ip4_header_t *) t->packet_data;
+ if ((ih4->ip_version_and_header_length & 0xF0) == 0x60)
+ s =
+ format (s, "%U%U", format_white_space, indent, format_ip6_header, ih4);
+ else
+ s =
+ format (s, "%U%U", format_white_space, indent, format_ip4_header, ih4);
+
+ return s;
+}
+
+always_inline uword
+dpdk_esp_decrypt_post_inline (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame, int is_ip6)
+{
+ u32 n_left_from, *from, *to_next = 0, next_index;
+ ipsec_sa_t *sa0;
+ u32 sa_index0 = ~0;
+ dpdk_crypto_main_t *dcm = &dpdk_crypto_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, iv_size, next0;
+ vlib_buffer_t *b0 = 0;
+ ip4_header_t *ih4 = 0, *oh4 = 0;
+ ip6_header_t *ih6 = 0, *oh6 = 0;
+ crypto_alg_t *cipher_alg, *auth_alg;
+ esp_header_t *esp0;
+ u8 trunc_size, is_aead;
+ u16 udp_encap_adv = 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);
+ esp0 = vlib_buffer_get_current (b0);
+
+ sa_index0 = vnet_buffer (b0)->ipsec.sad_index;
+ sa0 = ipsec_sa_get (sa_index0);
+
+ to_next[0] = bi0;
+ to_next += 1;
+
+ 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;
+
+ trunc_size = auth_alg->trunc_size;
+
+ iv_size = cipher_alg->iv_len;
+
+ ipsec_sa_anti_replay_advance (sa0,
+ clib_host_to_net_u32 (esp0->seq));
+
+ /* if UDP encapsulation is used adjust the address of the IP header */
+ if (ipsec_sa_is_set_UDP_ENCAP (sa0)
+ && (b0->flags & VNET_BUFFER_F_IS_IP4))
+ {
+ udp_encap_adv = sizeof (udp_header_t);
+ }
+
+ if (b0->flags & VNET_BUFFER_F_IS_IP4)
+ ih4 = (ip4_header_t *)
+ ((u8 *) esp0 - udp_encap_adv - sizeof (ip4_header_t));
+ else
+ ih4 = (ip4_header_t *) ((u8 *) esp0 - sizeof (ip6_header_t));
+
+ vlib_buffer_advance (b0, sizeof (esp_header_t) + iv_size);
+
+ b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ f0 = (esp_footer_t *) (vlib_buffer_get_tail (b0) - trunc_size - 2);
+ b0->current_length -= (f0->pad_length + trunc_size + 2);
+#if 0
+ /* check padding */
+ const u8 *padding = vlib_buffer_get_tail (b0);
+ if (PREDICT_FALSE (memcmp (padding, pad_data, f0->pad_length)))
+ {
+ clib_warning ("bad padding");
+ vlib_node_increment_counter (vm, dpdk_esp_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
+ goto trace;
+ }
+#endif
+ if (ipsec_sa_is_set_IS_TUNNEL (sa0))
+ {
+ if (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);
+ if (is_ip6)
+ vlib_node_increment_counter (vm,
+ dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
+ else
+ vlib_node_increment_counter (vm,
+ dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
+ goto trace;
+ }
+ }
+ else /* transport mode */
+ {
+ if ((ih4->ip_version_and_header_length & 0xF0) == 0x40)
+ {
+ u16 ih4_len = ip4_header_bytes (ih4);
+ vlib_buffer_advance (b0, -ih4_len);
+ next0 = ESP_DECRYPT_NEXT_IP4_INPUT;
+
+ oh4 = vlib_buffer_get_current (b0);
+ memmove (oh4, ih4, ih4_len);
+ oh4->protocol = f0->next_header;
+ oh4->length = clib_host_to_net_u16 (b0->current_length);
+ oh4->checksum = ip4_header_checksum (oh4);
+ }
+ else if ((ih4->ip_version_and_header_length & 0xF0) == 0x60)
+ {
+ ih6 = (ip6_header_t *) ih4;
+ 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;
+ u16 len = b0->current_length - sizeof (ip6_header_t);
+ oh6->payload_length = clib_host_to_net_u16 (len);
+ }
+ else
+ {
+ clib_warning ("next header: 0x%x", f0->next_header);
+ if (is_ip6)
+ vlib_node_increment_counter (vm,
+ dpdk_esp6_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
+ else
+ vlib_node_increment_counter (vm,
+ dpdk_esp4_decrypt_node.index,
+ ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
+ 1);
+ goto trace;
+ }
+ }
+
+ 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;
+ ih4 = vlib_buffer_get_current (b0);
+ clib_memcpy_fast (tr->packet_data, ih4, sizeof (ip6_header_t));
+ }
+
+ 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);
+ }
+
+ if (is_ip6)
+ vlib_node_increment_counter (vm, dpdk_esp6_decrypt_post_node.index,
+ ESP_DECRYPT_POST_ERROR_PKTS,
+ from_frame->n_vectors);
+ else
+ vlib_node_increment_counter (vm, dpdk_esp4_decrypt_post_node.index,
+ ESP_DECRYPT_POST_ERROR_PKTS,
+ from_frame->n_vectors);
+
+ return from_frame->n_vectors;
+}
+
+VLIB_NODE_FN (dpdk_esp4_decrypt_post_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return dpdk_esp_decrypt_post_inline (vm, node, from_frame, 0 /*is_ip6 */ );
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dpdk_esp4_decrypt_post_node) = {
+ .name = "dpdk-esp4-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 _
+ },
+};
+/* *INDENT-ON* */
+
+VLIB_NODE_FN (dpdk_esp6_decrypt_post_node) (vlib_main_t * vm,
+ vlib_node_runtime_t * node,
+ vlib_frame_t * from_frame)
+{
+ return dpdk_esp_decrypt_post_inline (vm, node, from_frame, 0 /*is_ip6 */ );
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (dpdk_esp6_decrypt_post_node) = {
+ .name = "dpdk-esp6-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 _
+ },
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
Code Review / vpp.git / blobdiff