} esp_decrypt_next_t;
-#define foreach_esp_decrypt_error \
- _(RX_PKTS, "ESP pkts received") \
- _(NO_BUFFER, "No buffer (packed dropped)") \
- _(DECRYPTION_FAILED, "ESP decryption failed") \
- _(INTEG_ERROR, "Integrity check failed") \
- _(REPLAY, "SA replayed packet") \
- _(NOT_IP, "Not IP packet (dropped)")
+#define foreach_esp_decrypt_error \
+ _(RX_PKTS, "ESP pkts received") \
+ _(DECRYPTION_FAILED, "ESP decryption failed") \
+ _(INTEG_ERROR, "Integrity check failed") \
+ _(CRYPTO_ENGINE_ERROR, "crypto engine error (packet dropped)") \
+ _(REPLAY, "SA replayed packet") \
+ _(CHAINED_BUFFER, "chained buffers (packet dropped)") \
+ _(OVERSIZED_HEADER, "buffer with oversized header (dropped)") \
+ _(NO_TAIL_SPACE, "no enough buffer tail space (dropped)")
typedef enum
typedef struct
{
+ u32 seq;
ipsec_crypto_alg_t crypto_alg;
ipsec_integ_alg_t integ_alg;
} esp_decrypt_trace_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",
+ s = format (s, "esp: crypto %U integrity %U seq %u",
format_ipsec_crypto_alg, t->crypto_alg,
- format_ipsec_integ_alg, t->integ_alg);
+ format_ipsec_integ_alg, t->integ_alg, t->seq);
return s;
}
-always_inline void
-esp_decrypt_cbc (vlib_main_t * vm, ipsec_sa_t * sa,
- u8 * in, u8 * out, size_t in_len, u8 * key, u8 * iv)
+typedef struct
{
- vnet_crypto_op_t _op, *op = &_op;
+ union
+ {
+ struct
+ {
+ u8 icv_sz;
+ u8 iv_sz;
+ ipsec_sa_flags_t flags:8;
+ u32 sa_index;
+ };
+ u64 sa_data;
+ };
- if (PREDICT_FALSE (sa->crypto_dec_op_type == VNET_CRYPTO_OP_NONE))
- return;
+ i16 current_data;
+ i16 current_length;
+ u16 hdr_sz;
+} esp_decrypt_packet_data_t;
- vnet_crypto_op_init (op, sa->crypto_dec_op_type);
- op->iv = iv;
- op->src = in;
- op->dst = out;
- op->len = in_len;
- op->key = key;
+STATIC_ASSERT_SIZEOF (esp_decrypt_packet_data_t, 2 * sizeof (u64));
- vnet_crypto_process_ops (vm, op, 1);
-}
+#define ESP_ENCRYPT_PD_F_FD_TRANSPORT (1 << 2)
always_inline uword
esp_decrypt_inline (vlib_main_t * vm,
int is_ip6)
{
ipsec_main_t *im = &ipsec_main;
+ u32 thread_index = vm->thread_index;
+ u16 buffer_data_size = vlib_buffer_get_default_data_size (vm);
+ u16 len;
+ ipsec_per_thread_data_t *ptd = vec_elt_at_index (im->ptd, thread_index);
u32 *from = vlib_frame_vector_args (from_frame);
- u32 n_left_from = from_frame->n_vectors;
- u32 new_bufs[VLIB_FRAME_SIZE];
- vlib_buffer_t *i_bufs[VLIB_FRAME_SIZE], **ib = i_bufs;
- vlib_buffer_t *o_bufs[VLIB_FRAME_SIZE], **ob = o_bufs;
+ u32 n, n_left = from_frame->n_vectors;
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
- u32 n_alloc, thread_index = vm->thread_index;
-
- n_alloc = vlib_buffer_alloc (vm, new_bufs, n_left_from);
- if (n_alloc != n_left_from)
+ esp_decrypt_packet_data_t pkt_data[VLIB_FRAME_SIZE], *pd = pkt_data;
+ esp_decrypt_packet_data_t cpd = { };
+ u32 current_sa_index = ~0, current_sa_bytes = 0, current_sa_pkts = 0;
+ const u8 esp_sz = sizeof (esp_header_t);
+ ipsec_sa_t *sa0 = 0;
+
+ vlib_get_buffers (vm, from, b, n_left);
+ vec_reset_length (ptd->crypto_ops);
+ vec_reset_length (ptd->integ_ops);
+ clib_memset_u16 (nexts, -1, n_left);
+
+ while (n_left > 0)
{
- vlib_node_increment_counter (vm, node->node_index,
- ESP_DECRYPT_ERROR_NO_BUFFER,
- n_left_from - n_alloc);
- if (n_alloc == 0)
- goto done;
- n_left_from = n_alloc;
- }
+ u8 *payload;
- vlib_get_buffers (vm, from, ib, n_left_from);
- vlib_get_buffers (vm, new_bufs, ob, n_left_from);
+ if (n_left > 2)
+ {
+ u8 *p;
+ vlib_prefetch_buffer_header (b[2], LOAD);
+ p = vlib_buffer_get_current (b[1]);
+ CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD);
+ p -= CLIB_CACHE_LINE_BYTES;
+ CLIB_PREFETCH (p, CLIB_CACHE_LINE_BYTES, LOAD);
+ }
- while (n_left_from > 0)
- {
- esp_header_t *esp0;
- ipsec_sa_t *sa0;
- u32 sa_index0 = ~0;
- ip4_header_t *ih4 = 0, *oh4 = 0;
- ip6_header_t *ih6 = 0, *oh6 = 0;
- u8 tunnel_mode = 1;
+ if (vlib_buffer_chain_linearize (vm, b[0]) != 1)
+ {
+ b[0]->error = node->errors[ESP_DECRYPT_ERROR_CHAINED_BUFFER];
+ next[0] = ESP_DECRYPT_NEXT_DROP;
+ goto next;
+ }
- next[0] = ESP_DECRYPT_NEXT_DROP;
+ if (vnet_buffer (b[0])->ipsec.sad_index != current_sa_index)
+ {
+ current_sa_index = vnet_buffer (b[0])->ipsec.sad_index;
+ sa0 = pool_elt_at_index (im->sad, current_sa_index);
+ cpd.icv_sz = sa0->integ_trunc_size;
+ cpd.iv_sz = sa0->crypto_iv_size;
+ cpd.flags = sa0->flags;
+ cpd.sa_index = current_sa_index;
+
+ vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
+ current_sa_index, current_sa_pkts,
+ current_sa_bytes);
+
+ current_sa_bytes = current_sa_pkts = 0;
+ }
- esp0 = vlib_buffer_get_current (ib[0]);
- sa_index0 = vnet_buffer (ib[0])->ipsec.sad_index;
- sa0 = pool_elt_at_index (im->sad, sa_index0);
+ /* store packet data for next round for easier prefetch */
+ pd->sa_data = cpd.sa_data;
+ pd->current_data = b[0]->current_data;
+ pd->current_length = b[0]->current_length;
+ pd->hdr_sz = pd->current_data - vnet_buffer (b[0])->l3_hdr_offset;
+ payload = b[0]->data + pd->current_data;
- /* anti-replay check */
- if (ipsec_sa_anti_replay_check (sa0, &esp0->seq))
+ /* we need 4 extra bytes for HMAC calculation when ESN are used */
+ if ((sa0->flags & IPSEC_SA_FLAG_USE_ESN) && pd->icv_sz &&
+ (pd->current_data + pd->current_length + 4 > buffer_data_size))
{
- u32 tmp, off = n_alloc - n_left_from;
- /* send original packet to drop node */
- tmp = from[off];
- from[off] = new_bufs[off];
- new_bufs[off] = tmp;
- ib[0]->error = node->errors[ESP_DECRYPT_ERROR_REPLAY];
+ b[0]->error = node->errors[ESP_DECRYPT_ERROR_NO_TAIL_SPACE];
next[0] = ESP_DECRYPT_NEXT_DROP;
- goto trace;
+ goto next;
}
- vlib_increment_combined_counter
- (&ipsec_sa_counters, thread_index, sa_index0,
- 1, ib[0]->current_length);
-
- if (PREDICT_TRUE (sa0->integ_alg != IPSEC_INTEG_ALG_NONE))
+ /* anti-reply check */
+ if (ipsec_sa_anti_replay_check (sa0, &((esp_header_t *) payload)->seq))
{
- u8 sig[64];
- int icv_size = sa0->integ_trunc_size;
- clib_memset (sig, 0, sizeof (sig));
- u8 *icv = vlib_buffer_get_current (ib[0]) + ib[0]->current_length -
- icv_size;
- ib[0]->current_length -= icv_size;
+ b[0]->error = node->errors[ESP_DECRYPT_ERROR_REPLAY];
+ next[0] = ESP_DECRYPT_NEXT_DROP;
+ goto next;
+ }
- hmac_calc (vm, sa0, (u8 *) esp0, ib[0]->current_length, sig);
+ len = pd->current_length - cpd.icv_sz;
+ current_sa_pkts += 1;
+ current_sa_bytes += pd->current_length;
- if (PREDICT_FALSE (memcmp (icv, sig, icv_size)))
+ if (PREDICT_TRUE (cpd.icv_sz > 0))
+ {
+ vnet_crypto_op_t *op;
+ vec_add2_aligned (ptd->integ_ops, op, 1, CLIB_CACHE_LINE_BYTES);
+
+ vnet_crypto_op_init (op, sa0->integ_op_type);
+ op->key = sa0->integ_key.data;
+ op->key_len = sa0->integ_key.len;
+ op->src = payload;
+ op->hmac_trunc_len = cpd.icv_sz;
+ op->flags = VNET_CRYPTO_OP_FLAG_HMAC_CHECK;
+ op->user_data = b - bufs;
+ op->dst = payload + len;
+ op->len = len;
+ if (PREDICT_TRUE (sa0->flags & IPSEC_SA_FLAG_USE_ESN))
{
- u32 tmp, off = n_alloc - n_left_from;
- /* send original packet to drop node */
- tmp = from[off];
- from[off] = new_bufs[off];
- new_bufs[off] = tmp;
- ib[0]->error = node->errors[ESP_DECRYPT_ERROR_INTEG_ERROR];
- next[0] = ESP_DECRYPT_NEXT_DROP;
- goto trace;
+ /* shift ICV for 4 bytes to insert ESN */
+ u8 tmp[ESP_MAX_ICV_SIZE], sz = sizeof (sa0->seq_hi);
+ clib_memcpy_fast (tmp, payload + len, ESP_MAX_ICV_SIZE);
+ clib_memcpy_fast (payload + len, &sa0->seq_hi, sz);
+ clib_memcpy_fast (payload + len + sz, tmp, ESP_MAX_ICV_SIZE);
+ op->len += sz;
+ op->dst += sz;
}
}
- ipsec_sa_anti_replay_advance (sa0, &esp0->seq);
+ payload += esp_sz;
+ len -= esp_sz;
- if ((sa0->crypto_alg >= IPSEC_CRYPTO_ALG_AES_CBC_128 &&
- sa0->crypto_alg <= IPSEC_CRYPTO_ALG_AES_CBC_256) ||
- (sa0->crypto_alg >= IPSEC_CRYPTO_ALG_DES_CBC &&
- sa0->crypto_alg <= IPSEC_CRYPTO_ALG_3DES_CBC))
+ if (sa0->crypto_enc_op_type != VNET_CRYPTO_OP_NONE)
{
- const int BLOCK_SIZE = sa0->crypto_block_size;
- const int IV_SIZE = sa0->crypto_block_size;
- esp_footer_t *f0;
- u8 ip_hdr_size = 0;
+ vnet_crypto_op_t *op;
+ vec_add2_aligned (ptd->crypto_ops, op, 1, CLIB_CACHE_LINE_BYTES);
+ vnet_crypto_op_init (op, sa0->crypto_dec_op_type);
+ op->key = sa0->crypto_key.data;
+ op->iv = payload;
+ op->src = op->dst = payload += cpd.iv_sz;
+ op->len = len;
+ op->user_data = b - bufs;
+ }
- int blocks =
- (ib[0]->current_length - sizeof (esp_header_t) -
- IV_SIZE) / BLOCK_SIZE;
+ /* next */
+ next:
+ n_left -= 1;
+ next += 1;
+ pd += 1;
+ b += 1;
+ }
- ob[0]->current_data = sizeof (ethernet_header_t);
+ vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
+ current_sa_index, current_sa_pkts,
+ current_sa_bytes);
- /* transport mode */
- if (PREDICT_FALSE (!ipsec_sa_is_set_IS_TUNNEL (sa0) &&
- !ipsec_sa_is_set_IS_TUNNEL_V6 (sa0)))
+ if ((n = vec_len (ptd->integ_ops)))
+ {
+ vnet_crypto_op_t *op = ptd->integ_ops;
+ n -= vnet_crypto_process_ops (vm, op, n);
+ while (n)
+ {
+ ASSERT (op - ptd->integ_ops < vec_len (ptd->integ_ops));
+ if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
{
- tunnel_mode = 0;
-
- if (is_ip6)
- {
- ip_hdr_size = sizeof (ip6_header_t);
- ih6 = (ip6_header_t *) ((u8 *) esp0 - ip_hdr_size);
- oh6 = vlib_buffer_get_current (ob[0]);
- }
+ u32 err, bi = op->user_data;
+ if (op->status == VNET_CRYPTO_OP_STATUS_FAIL_BAD_HMAC)
+ err = ESP_DECRYPT_ERROR_INTEG_ERROR;
else
- {
- ip_hdr_size = sizeof (ip4_header_t);
- if (ipsec_sa_is_set_UDP_ENCAP (sa0))
- ih4 = (ip4_header_t *) ((u8 *) esp0 - ip_hdr_size -
- sizeof (udp_header_t));
- else
- ih4 = (ip4_header_t *) ((u8 *) esp0 - ip_hdr_size);
- oh4 = vlib_buffer_get_current (ob[0]);
- }
+ err = ESP_DECRYPT_ERROR_CRYPTO_ENGINE_ERROR;
+ bufs[bi]->error = node->errors[err];
+ nexts[bi] = ESP_DECRYPT_NEXT_DROP;
+ n--;
}
+ op++;
+ }
+ }
- esp_decrypt_cbc (vm, sa0, esp0->data + IV_SIZE,
- (u8 *) vlib_buffer_get_current (ob[0]) +
- ip_hdr_size, BLOCK_SIZE * blocks,
- sa0->crypto_key.data, esp0->data);
+ if ((n = vec_len (ptd->crypto_ops)))
+ {
+ vnet_crypto_op_t *op = ptd->crypto_ops;
+ n -= vnet_crypto_process_ops (vm, op, n);
+ while (n)
+ {
+ ASSERT (op - ptd->crypto_ops < vec_len (ptd->crypto_ops));
+ if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
+ {
+ u32 bi = op->user_data;
+ u32 err = ESP_DECRYPT_ERROR_CRYPTO_ENGINE_ERROR;
+ bufs[bi]->error = node->errors[err];
+ nexts[bi] = ESP_DECRYPT_NEXT_DROP;
+ n--;
+ }
+ op++;
+ }
+ }
- ob[0]->current_length = (blocks * BLOCK_SIZE) - 2 + ip_hdr_size;
- ob[0]->flags = VLIB_BUFFER_TOTAL_LENGTH_VALID;
- f0 = (esp_footer_t *) ((u8 *) vlib_buffer_get_current (ob[0]) +
- ob[0]->current_length);
- ob[0]->current_length -= f0->pad_length;
+ /* Post decryption ronud - adjust packet data start and length and next
+ node */
- /* tunnel mode */
- if (PREDICT_TRUE (tunnel_mode))
+ n_left = from_frame->n_vectors;
+ next = nexts;
+ pd = pkt_data;
+ b = bufs;
+
+ while (n_left)
+ {
+ const u8 tun_flags = IPSEC_SA_FLAG_IS_TUNNEL |
+ IPSEC_SA_FLAG_IS_TUNNEL_V6;
+
+ if (n_left >= 2)
+ {
+ void *data = b[1]->data + pd[1].current_data;
+
+ /* buffer metadata */
+ vlib_prefetch_buffer_header (b[1], LOAD);
+
+ /* esp_footer_t */
+ CLIB_PREFETCH (data + pd[1].current_length - pd[1].icv_sz - 2,
+ CLIB_CACHE_LINE_BYTES, LOAD);
+
+ /* packet headers */
+ CLIB_PREFETCH (data - CLIB_CACHE_LINE_BYTES,
+ CLIB_CACHE_LINE_BYTES * 2, LOAD);
+ }
+
+ if (next[0] < ESP_DECRYPT_N_NEXT)
+ goto trace;
+
+ sa0 = vec_elt_at_index (im->sad, pd->sa_index);
+ u8 *payload = b[0]->data + pd->current_data;
+
+ ipsec_sa_anti_replay_advance (sa0, &((esp_header_t *) payload)->seq);
+
+ esp_footer_t *f = (esp_footer_t *) (b[0]->data + pd->current_data +
+ pd->current_length - sizeof (*f) -
+ pd->icv_sz);
+ u16 adv = pd->iv_sz + esp_sz;
+ u16 tail = sizeof (esp_footer_t) + f->pad_length + pd->icv_sz;
+
+ if ((pd->flags & tun_flags) == 0) /* transport mode */
+ {
+ u8 udp_sz = (is_ip6 == 0 && pd->flags & IPSEC_SA_FLAG_UDP_ENCAP) ?
+ sizeof (udp_header_t) : 0;
+ u16 ip_hdr_sz = pd->hdr_sz - udp_sz;
+ u8 *old_ip = b[0]->data + pd->current_data - ip_hdr_sz - udp_sz;
+ u8 *ip = old_ip + adv + udp_sz;
+
+ if (is_ip6 && ip_hdr_sz > 64)
+ memmove (ip, old_ip, ip_hdr_sz);
+ else
+ clib_memcpy_le64 (ip, old_ip, ip_hdr_sz);
+
+ b[0]->current_data = pd->current_data + adv - ip_hdr_sz;
+ b[0]->current_length = pd->current_length + ip_hdr_sz - tail - adv;
+
+ if (is_ip6)
{
- if (PREDICT_TRUE (f0->next_header == IP_PROTOCOL_IP_IN_IP))
- {
- next[0] = ESP_DECRYPT_NEXT_IP4_INPUT;
- oh4 = vlib_buffer_get_current (ob[0]);
- }
- else if (f0->next_header == IP_PROTOCOL_IPV6)
- next[0] = ESP_DECRYPT_NEXT_IP6_INPUT;
- else
- {
- vlib_node_increment_counter (vm, node->node_index,
- ESP_DECRYPT_ERROR_DECRYPTION_FAILED,
- 1);
- ob[0] = 0;
- goto trace;
- }
+ ip6_header_t *ip6 = (ip6_header_t *) ip;
+ u16 len = clib_net_to_host_u16 (ip6->payload_length);
+ len -= adv + tail;
+ ip6->payload_length = clib_host_to_net_u16 (len);
+ ip6->protocol = f->next_header;
+ next[0] = ESP_DECRYPT_NEXT_IP6_INPUT;
}
- /* transport mode */
else
{
- u32 len = vlib_buffer_length_in_chain (vm, ob[0]);
- if (is_ip6)
- {
- next[0] = ESP_DECRYPT_NEXT_IP6_INPUT;
- oh6->ip_version_traffic_class_and_flow_label =
- ih6->ip_version_traffic_class_and_flow_label;
- oh6->protocol = f0->next_header;
- oh6->hop_limit = ih6->hop_limit;
- oh6->src_address.as_u64[0] = ih6->src_address.as_u64[0];
- oh6->src_address.as_u64[1] = ih6->src_address.as_u64[1];
- oh6->dst_address.as_u64[0] = ih6->dst_address.as_u64[0];
- oh6->dst_address.as_u64[1] = ih6->dst_address.as_u64[1];
- len -= sizeof (ip6_header_t);
- oh6->payload_length = clib_host_to_net_u16 (len);
- }
- else
- {
- next[0] = ESP_DECRYPT_NEXT_IP4_INPUT;
- oh4->ip_version_and_header_length = 0x45;
- oh4->tos = ih4->tos;
- oh4->fragment_id = 0;
- oh4->flags_and_fragment_offset = 0;
- oh4->ttl = ih4->ttl;
- oh4->protocol = f0->next_header;
- oh4->src_address.as_u32 = ih4->src_address.as_u32;
- oh4->dst_address.as_u32 = ih4->dst_address.as_u32;
- oh4->length = clib_host_to_net_u16 (len);
- oh4->checksum = ip4_header_checksum (oh4);
- }
+ ip4_header_t *ip4 = (ip4_header_t *) ip;
+ ip_csum_t sum = ip4->checksum;
+ u16 len = clib_net_to_host_u16 (ip4->length);
+ len = clib_host_to_net_u16 (len - adv - tail - udp_sz);
+ sum = ip_csum_update (sum, ip4->protocol, f->next_header,
+ ip4_header_t, protocol);
+ sum = ip_csum_update (sum, ip4->length, len,
+ ip4_header_t, length);
+ ip4->checksum = ip_csum_fold (sum);
+ ip4->protocol = f->next_header;
+ ip4->length = len;
+ next[0] = ESP_DECRYPT_NEXT_IP4_INPUT;
}
-
- /* for IPSec-GRE tunnel next node is ipsec-gre-input */
- if (PREDICT_FALSE
- ((vnet_buffer (ib[0])->ipsec.flags) &
- IPSEC_FLAG_IPSEC_GRE_TUNNEL))
- next[0] = ESP_DECRYPT_NEXT_IPSEC_GRE_INPUT;
-
- vnet_buffer (ob[0])->sw_if_index[VLIB_TX] = (u32) ~ 0;
- vnet_buffer (ob[0])->sw_if_index[VLIB_RX] =
- vnet_buffer (ib[0])->sw_if_index[VLIB_RX];
}
-
- trace:
- if (PREDICT_FALSE (ib[0]->flags & VLIB_BUFFER_IS_TRACED))
+ else
{
- if (ob[0])
+ if (PREDICT_TRUE (f->next_header == IP_PROTOCOL_IP_IN_IP))
+ {
+ next[0] = ESP_DECRYPT_NEXT_IP4_INPUT;
+ b[0]->current_data = pd->current_data + adv;
+ b[0]->current_length = pd->current_length + adv - tail;
+ }
+ else if (f->next_header == IP_PROTOCOL_IPV6)
+ {
+ next[0] = ESP_DECRYPT_NEXT_IP6_INPUT;
+ b[0]->current_data = pd->current_data + adv;
+ b[0]->current_length = pd->current_length + adv - tail;
+ }
+ else
{
- ob[0]->flags |= VLIB_BUFFER_IS_TRACED;
- ob[0]->trace_index = ib[0]->trace_index;
- esp_decrypt_trace_t *tr =
- vlib_add_trace (vm, node, ob[0], sizeof (*tr));
- tr->crypto_alg = sa0->crypto_alg;
- tr->integ_alg = sa0->integ_alg;
+ next[0] = ESP_DECRYPT_NEXT_DROP;
+ b[0]->error = node->errors[ESP_DECRYPT_ERROR_DECRYPTION_FAILED];
}
}
+ if (vnet_buffer (b[0])->ipsec.flags & IPSEC_FLAG_IPSEC_GRE_TUNNEL)
+ next[0] = ESP_DECRYPT_NEXT_IPSEC_GRE_INPUT;
+
+ trace:
+ if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ esp_decrypt_trace_t *tr;
+ u8 *payload = b[0]->data + pd->current_data;
+ tr = vlib_add_trace (vm, node, b[0], sizeof (*tr));
+ sa0 = pool_elt_at_index (im->sad,
+ vnet_buffer (b[0])->ipsec.sad_index);
+ tr->crypto_alg = sa0->crypto_alg;
+ tr->integ_alg = sa0->integ_alg;
+ tr->seq = clib_host_to_net_u32 (((esp_header_t *) payload)->seq);
+ }
+
/* next */
- n_left_from -= 1;
- ib += 1;
- ob += 1;
+ n_left -= 1;
next += 1;
+ pd += 1;
+ b += 1;
}
+ n_left = from_frame->n_vectors;
vlib_node_increment_counter (vm, node->node_index,
- ESP_DECRYPT_ERROR_RX_PKTS, n_alloc);
+ ESP_DECRYPT_ERROR_RX_PKTS, n_left);
+
+ vlib_buffer_enqueue_to_next (vm, node, from, nexts, n_left);
- vlib_buffer_enqueue_to_next (vm, node, new_bufs, nexts, n_alloc);
-done:
- vlib_buffer_free (vm, from, from_frame->n_vectors);
- return n_alloc;
+ b = bufs;
+ return n_left;
}
VLIB_NODE_FN (esp4_decrypt_node) (vlib_main_t * vm,
Code Review / vpp.git / commitdiff