AH_ENCRYPT_N_NEXT,
} ah_encrypt_next_t;
-#define foreach_ah_encrypt_error \
- _(RX_PKTS, "AH pkts received") \
+#define foreach_ah_encrypt_error \
+ _(RX_PKTS, "AH pkts received") \
+ _(CRYPTO_ENGINE_ERROR, "crypto engine error (packet dropped)") \
_(SEQ_CYCLED, "sequence number cycled")
return s;
}
+static_always_inline void
+ah_process_ops (vlib_main_t * vm, vlib_node_runtime_t * node,
+ vnet_crypto_op_t * ops, vlib_buffer_t * b[], u16 * nexts)
+{
+ u32 n_fail, n_ops = vec_len (ops);
+ vnet_crypto_op_t *op = ops;
+
+ if (n_ops == 0)
+ return;
+
+ n_fail = n_ops - vnet_crypto_process_ops (vm, op, n_ops);
+
+ while (n_fail)
+ {
+ ASSERT (op - ops < n_ops);
+
+ if (op->status != VNET_CRYPTO_OP_STATUS_COMPLETED)
+ {
+ u32 bi = op->user_data;
+ b[bi]->error = node->errors[AH_ENCRYPT_ERROR_CRYPTO_ENGINE_ERROR];
+ nexts[bi] = AH_ENCRYPT_NEXT_DROP;
+ n_fail--;
+ }
+ op++;
+ }
+}
+
+typedef struct
+{
+ union
+ {
+ struct
+ {
+ u8 hop_limit;
+ u32 ip_version_traffic_class_and_flow_label;
+ };
+
+ struct
+ {
+ u8 ttl;
+ u8 tos;
+ };
+ };
+ i16 current_data;
+ u8 skip;
+ u32 sa_index;
+} ah_encrypt_packet_data_t;
+
always_inline uword
ah_encrypt_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * from_frame,
+ vlib_node_runtime_t * node, vlib_frame_t * frame,
int is_ip6)
{
- u32 n_left_from, *from, *to_next = 0, next_index, thread_index;
+ u32 n_left, *from, thread_index;
int icv_size = 0;
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
+ from = vlib_frame_vector_args (frame);
+ n_left = frame->n_vectors;
ipsec_main_t *im = &ipsec_main;
- next_index = node->cached_next_index;
+ ah_encrypt_packet_data_t pkt_data[VLIB_FRAME_SIZE], *pd = pkt_data;
thread_index = vm->thread_index;
-
- while (n_left_from > 0)
+ vlib_buffer_t *bufs[VLIB_FRAME_SIZE], **b = bufs;
+ u16 nexts[VLIB_FRAME_SIZE], *next = nexts;
+ ipsec_per_thread_data_t *ptd = vec_elt_at_index (im->ptd, thread_index);
+ ipsec_sa_t *sa0 = 0;
+ ip4_and_ah_header_t *ih0, *oh0 = 0;
+ ip6_and_ah_header_t *ih6_0, *oh6_0 = 0;
+ u32 current_sa_index = ~0, current_sa_bytes = 0, current_sa_pkts = 0;
+ const static ip4_header_t ip4_hdr_template = {
+ .ip_version_and_header_length = 0x45,
+ .protocol = IP_PROTOCOL_IPSEC_AH,
+ };
+ const static ip6_header_t ip6_hdr_template = {
+ .ip_version_traffic_class_and_flow_label = 0x60,
+ .protocol = IP_PROTOCOL_IPSEC_AH,
+ };
+
+ clib_memset (pkt_data, 0, VLIB_FRAME_SIZE * sizeof (pkt_data[0]));
+ vlib_get_buffers (vm, from, b, n_left);
+ vec_reset_length (ptd->crypto_ops);
+ vec_reset_length (ptd->integ_ops);
+
+ while (n_left > 0)
{
- u32 n_left_to_next;
+ u8 ip_hdr_size;
+ u8 next_hdr_type;
+
+ 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);
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ 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;
+ }
+
+ pd->sa_index = current_sa_index;
+ next[0] = AH_ENCRYPT_NEXT_DROP;
- while (n_left_from > 0 && n_left_to_next > 0)
+ if (PREDICT_FALSE (esp_seq_advance (sa0)))
{
- u32 i_bi0, next0;
- vlib_buffer_t *i_b0 = 0;
- u32 sa_index0;
- ipsec_sa_t *sa0;
- ip4_and_ah_header_t *ih0, *oh0 = 0;
- ip6_and_ah_header_t *ih6_0, *oh6_0 = 0;
- u8 ip_hdr_size;
- u8 next_hdr_type;
- u8 tos = 0;
- u8 ttl = 0;
- u8 hop_limit = 0;
- u32 ip_version_traffic_class_and_flow_label = 0;
-
- i_bi0 = from[0];
- from += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
- next0 = AH_ENCRYPT_NEXT_DROP;
-
- i_b0 = vlib_get_buffer (vm, i_bi0);
- to_next[0] = i_bi0;
- to_next += 1;
- sa_index0 = vnet_buffer (i_b0)->ipsec.sad_index;
- sa0 = pool_elt_at_index (im->sad, sa_index0);
-
- if (PREDICT_FALSE (esp_seq_advance (sa0)))
- {
- i_b0->error = node->errors[AH_ENCRYPT_ERROR_SEQ_CYCLED];
- goto trace;
- }
- vlib_increment_combined_counter
- (&ipsec_sa_counters, thread_index, sa_index0,
- 1, i_b0->current_length);
+ b[0]->error = node->errors[AH_ENCRYPT_ERROR_SEQ_CYCLED];
+ pd->skip = 1;
+ goto next;
+ }
+
+ current_sa_pkts += 1;
+ current_sa_bytes += b[0]->current_length;
- ssize_t adv;
- ih0 = vlib_buffer_get_current (i_b0);
- ttl = ih0->ip4.ttl;
- tos = ih0->ip4.tos;
+ ssize_t adv;
+ ih0 = vlib_buffer_get_current (b[0]);
+ pd->ttl = ih0->ip4.ttl;
+ pd->tos = ih0->ip4.tos;
+ if (PREDICT_TRUE (ipsec_sa_is_set_IS_TUNNEL (sa0)))
+ {
+ if (is_ip6)
+ adv = -sizeof (ip6_and_ah_header_t);
+ else
+ adv = -sizeof (ip4_and_ah_header_t);
+ }
+ else
+ {
+ adv = -sizeof (ah_header_t);
+ }
+
+ icv_size = sa0->integ_icv_size;
+ const u8 padding_len = ah_calc_icv_padding_len (icv_size, is_ip6);
+ adv -= padding_len;
+ /* transport mode save the eth header before it is overwritten */
+ if (PREDICT_FALSE (!ipsec_sa_is_set_IS_TUNNEL (sa0)))
+ {
+ ethernet_header_t *ieh0 = (ethernet_header_t *)
+ ((u8 *) vlib_buffer_get_current (b[0]) -
+ sizeof (ethernet_header_t));
+ ethernet_header_t *oeh0 =
+ (ethernet_header_t *) ((u8 *) ieh0 + (adv - icv_size));
+ clib_memcpy_fast (oeh0, ieh0, sizeof (ethernet_header_t));
+ }
+
+ vlib_buffer_advance (b[0], adv - icv_size);
+
+ if (is_ip6)
+ {
+ ih6_0 = (ip6_and_ah_header_t *) ih0;
+ ip_hdr_size = sizeof (ip6_header_t);
+ oh6_0 = vlib_buffer_get_current (b[0]);
+ pd->current_data = b[0]->current_data;
+
+ pd->hop_limit = ih6_0->ip6.hop_limit;
+ pd->ip_version_traffic_class_and_flow_label =
+ ih6_0->ip6.ip_version_traffic_class_and_flow_label;
if (PREDICT_TRUE (ipsec_sa_is_set_IS_TUNNEL (sa0)))
{
- if (is_ip6)
- adv = -sizeof (ip6_and_ah_header_t);
- else
- adv = -sizeof (ip4_and_ah_header_t);
+ next_hdr_type = IP_PROTOCOL_IPV6;
}
else
{
- adv = -sizeof (ah_header_t);
- }
-
- icv_size = sa0->integ_icv_size;
- const u8 padding_len = ah_calc_icv_padding_len (icv_size, is_ip6);
- adv -= padding_len;
- /* transport mode save the eth header before it is overwritten */
- if (PREDICT_FALSE (!ipsec_sa_is_set_IS_TUNNEL (sa0)))
- {
- ethernet_header_t *ieh0 = (ethernet_header_t *)
- ((u8 *) vlib_buffer_get_current (i_b0) -
- sizeof (ethernet_header_t));
- ethernet_header_t *oeh0 =
- (ethernet_header_t *) ((u8 *) ieh0 + (adv - icv_size));
- clib_memcpy_fast (oeh0, ieh0, sizeof (ethernet_header_t));
+ next_hdr_type = ih6_0->ip6.protocol;
+ memmove (oh6_0, ih6_0, sizeof (ip6_header_t));
}
- vlib_buffer_advance (i_b0, adv - icv_size);
+ clib_memcpy_fast (&oh6_0->ip6, &ip6_hdr_template, 8);
+ oh6_0->ah.reserved = 0;
+ oh6_0->ah.nexthdr = next_hdr_type;
+ oh6_0->ah.spi = clib_net_to_host_u32 (sa0->spi);
+ oh6_0->ah.seq_no = clib_net_to_host_u32 (sa0->seq);
+ oh6_0->ip6.payload_length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b[0]) -
+ sizeof (ip6_header_t));
+ oh6_0->ah.hdrlen =
+ (sizeof (ah_header_t) + icv_size + padding_len) / 4 - 2;
+ }
+ else
+ {
+ ip_hdr_size = sizeof (ip4_header_t);
+ oh0 = vlib_buffer_get_current (b[0]);
+ clib_memset (oh0, 0, sizeof (ip4_and_ah_header_t));
+ pd->current_data = b[0]->current_data;
- if (is_ip6)
+ if (PREDICT_TRUE (ipsec_sa_is_set_IS_TUNNEL (sa0)))
{
- ih6_0 = (ip6_and_ah_header_t *) ih0;
- ip_hdr_size = sizeof (ip6_header_t);
- oh6_0 = vlib_buffer_get_current (i_b0);
-
- hop_limit = ih6_0->ip6.hop_limit;
- ip_version_traffic_class_and_flow_label =
- ih6_0->ip6.ip_version_traffic_class_and_flow_label;
- if (PREDICT_TRUE (ipsec_sa_is_set_IS_TUNNEL (sa0)))
- {
- next_hdr_type = IP_PROTOCOL_IPV6;
- }
- else
- {
- next_hdr_type = ih6_0->ip6.protocol;
- memmove (oh6_0, ih6_0, sizeof (ip6_header_t));
- }
-
- oh6_0->ip6.protocol = IP_PROTOCOL_IPSEC_AH;
- oh6_0->ip6.hop_limit = 0;
- oh6_0->ip6.ip_version_traffic_class_and_flow_label = 0x60;
- oh6_0->ah.reserved = 0;
- oh6_0->ah.nexthdr = next_hdr_type;
- oh6_0->ah.spi = clib_net_to_host_u32 (sa0->spi);
- oh6_0->ah.seq_no = clib_net_to_host_u32 (sa0->seq);
- oh6_0->ip6.payload_length =
- clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, i_b0) -
- sizeof (ip6_header_t));
- oh6_0->ah.hdrlen =
- (sizeof (ah_header_t) + icv_size + padding_len) / 4 - 2;
+ next_hdr_type = IP_PROTOCOL_IP_IN_IP;
}
else
{
- ip_hdr_size = sizeof (ip4_header_t);
- oh0 = vlib_buffer_get_current (i_b0);
- clib_memset (oh0, 0, sizeof (ip4_and_ah_header_t));
-
- if (PREDICT_TRUE (ipsec_sa_is_set_IS_TUNNEL (sa0)))
- {
- next_hdr_type = IP_PROTOCOL_IP_IN_IP;
- }
- else
- {
- next_hdr_type = ih0->ip4.protocol;
- memmove (oh0, ih0, sizeof (ip4_header_t));
- }
-
- oh0->ip4.length =
- clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, i_b0));
- oh0->ip4.ip_version_and_header_length = 0x45;
- oh0->ip4.fragment_id = 0;
- oh0->ip4.flags_and_fragment_offset = 0;
- oh0->ip4.ttl = 0;
- oh0->ip4.tos = 0;
- oh0->ip4.protocol = IP_PROTOCOL_IPSEC_AH;
- oh0->ah.spi = clib_net_to_host_u32 (sa0->spi);
- oh0->ah.seq_no = clib_net_to_host_u32 (sa0->seq);
- oh0->ip4.checksum = 0;
- oh0->ah.nexthdr = next_hdr_type;
- oh0->ah.hdrlen =
- (sizeof (ah_header_t) + icv_size + padding_len) / 4 - 2;
+ next_hdr_type = ih0->ip4.protocol;
+ memmove (oh0, ih0, sizeof (ip4_header_t));
}
+ clib_memcpy_fast (&oh0->ip4, &ip4_hdr_template,
+ sizeof (ip4_header_t) -
+ sizeof (ip4_address_pair_t));
+
+ oh0->ip4.length =
+ clib_host_to_net_u16 (vlib_buffer_length_in_chain (vm, b[0]));
+ oh0->ah.spi = clib_net_to_host_u32 (sa0->spi);
+ oh0->ah.seq_no = clib_net_to_host_u32 (sa0->seq);
+ oh0->ah.nexthdr = next_hdr_type;
+ oh0->ah.hdrlen =
+ (sizeof (ah_header_t) + icv_size + padding_len) / 4 - 2;
+ }
- if (PREDICT_TRUE (!is_ip6 && ipsec_sa_is_set_IS_TUNNEL (sa0) &&
- !ipsec_sa_is_set_IS_TUNNEL_V6 (sa0)))
- {
- 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 (PREDICT_TRUE (!is_ip6 && ipsec_sa_is_set_IS_TUNNEL (sa0) &&
+ !ipsec_sa_is_set_IS_TUNNEL_V6 (sa0)))
+ {
+ clib_memcpy_fast (&oh0->ip4.address_pair,
+ &sa0->ip4_hdr.address_pair,
+ sizeof (ip4_address_t));
- next0 = sa0->dpo[IPSEC_PROTOCOL_AH].dpoi_next_node;
- vnet_buffer (i_b0)->ip.adj_index[VLIB_TX] =
- sa0->dpo[IPSEC_PROTOCOL_AH].dpoi_index;
- }
- else if (is_ip6 && ipsec_sa_is_set_IS_TUNNEL (sa0) &&
- ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
+ next[0] = sa0->dpo[IPSEC_PROTOCOL_AH].dpoi_next_node;
+ vnet_buffer (b[0])->ip.adj_index[VLIB_TX] =
+ sa0->dpo[IPSEC_PROTOCOL_AH].dpoi_index;
+ }
+ else if (is_ip6 && ipsec_sa_is_set_IS_TUNNEL (sa0) &&
+ ipsec_sa_is_set_IS_TUNNEL_V6 (sa0))
+ {
+ clib_memcpy_fast (&oh6_0->ip6.src_address,
+ &sa0->ip6_hdr.src_address,
+ sizeof (ip6_address_t) * 2);
+ next[0] = sa0->dpo[IPSEC_PROTOCOL_AH].dpoi_next_node;
+ vnet_buffer (b[0])->ip.adj_index[VLIB_TX] =
+ sa0->dpo[IPSEC_PROTOCOL_AH].dpoi_index;
+ }
+
+ if (PREDICT_TRUE (sa0->integ_op_id))
+ {
+ 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_id);
+ op->src = vlib_buffer_get_current (b[0]);
+ op->len = b[0]->current_length;
+ op->digest = vlib_buffer_get_current (b[0]) + ip_hdr_size +
+ sizeof (ah_header_t);
+ clib_memset (op->digest, 0, icv_size);
+ op->digest_len = icv_size;
+ op->key_index = sa0->integ_key_index;
+ op->user_data = b - bufs;
+ if (ipsec_sa_is_set_USE_ESN (sa0))
{
- 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];
-
- next0 = sa0->dpo[IPSEC_PROTOCOL_AH].dpoi_next_node;
- vnet_buffer (i_b0)->ip.adj_index[VLIB_TX] =
- sa0->dpo[IPSEC_PROTOCOL_AH].dpoi_index;
+ u32 seq_hi = clib_host_to_net_u32 (sa0->seq_hi);
+
+ op->len += sizeof (seq_hi);
+ clib_memcpy (op->src + b[0]->current_length, &seq_hi,
+ sizeof (seq_hi));
}
+ }
- u8 sig[64];
+ if (!ipsec_sa_is_set_IS_TUNNEL (sa0))
+ {
+ next[0] = AH_ENCRYPT_NEXT_INTERFACE_OUTPUT;
+ vlib_buffer_advance (b[0], -sizeof (ethernet_header_t));
+ }
- u8 *digest =
- vlib_buffer_get_current (i_b0) + ip_hdr_size +
- sizeof (ah_header_t);
- clib_memset (digest, 0, icv_size);
+ next:
+ n_left -= 1;
+ next += 1;
+ pd += 1;
+ b += 1;
+ }
- unsigned size = hmac_calc (vm, sa0, vlib_buffer_get_current (i_b0),
- i_b0->current_length, sig);
+ n_left = frame->n_vectors;
+ next = nexts;
+ pd = pkt_data;
+ b = bufs;
- memcpy (digest, sig, size);
- if (is_ip6)
- {
- oh6_0->ip6.hop_limit = hop_limit;
- oh6_0->ip6.ip_version_traffic_class_and_flow_label =
- ip_version_traffic_class_and_flow_label;
- }
- else
- {
- oh0->ip4.ttl = ttl;
- oh0->ip4.tos = tos;
- oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4);
- }
+ vlib_node_increment_counter (vm, node->node_index,
+ AH_ENCRYPT_ERROR_RX_PKTS, n_left);
+ vlib_increment_combined_counter (&ipsec_sa_counters, thread_index,
+ current_sa_index, current_sa_pkts,
+ current_sa_bytes);
- if (!ipsec_sa_is_set_IS_TUNNEL (sa0))
- {
- next0 = AH_ENCRYPT_NEXT_INTERFACE_OUTPUT;
- vlib_buffer_advance (i_b0, -sizeof (ethernet_header_t));
- }
+ ah_process_ops (vm, node, ptd->integ_ops, bufs, nexts);
- trace:
- if (PREDICT_FALSE (i_b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- ah_encrypt_trace_t *tr =
- vlib_add_trace (vm, node, i_b0, sizeof (*tr));
- tr->spi = sa0->spi;
- tr->seq_lo = sa0->seq;
- tr->seq_hi = sa0->seq_hi;
- tr->integ_alg = sa0->integ_alg;
- tr->sa_index = sa_index0;
- }
+ while (n_left)
+ {
+ if (pd->skip)
+ goto trace;
+
+ if (is_ip6)
+ {
+ oh6_0 = (ip6_and_ah_header_t *) (b[0]->data + pd->current_data);
+ oh6_0->ip6.hop_limit = pd->hop_limit;
+ oh6_0->ip6.ip_version_traffic_class_and_flow_label =
+ pd->ip_version_traffic_class_and_flow_label;
+ }
+ else
+ {
+ oh0 = (ip4_and_ah_header_t *) (b[0]->data + pd->current_data);
+ oh0->ip4.ttl = pd->ttl;
+ oh0->ip4.tos = pd->tos;
+ oh0->ip4.checksum = ip4_header_checksum (&oh0->ip4);
+ }
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
- to_next, n_left_to_next, i_bi0,
- next0);
+ trace:
+ if (PREDICT_FALSE (b[0]->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ sa0 = vec_elt_at_index (im->sad, pd->sa_index);
+ ah_encrypt_trace_t *tr =
+ vlib_add_trace (vm, node, b[0], sizeof (*tr));
+ tr->spi = sa0->spi;
+ tr->seq_lo = sa0->seq;
+ tr->seq_hi = sa0->seq_hi;
+ tr->integ_alg = sa0->integ_alg;
+ tr->sa_index = pd->sa_index;
}
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+
+ n_left -= 1;
+ next += 1;
+ pd += 1;
+ b += 1;
}
- vlib_node_increment_counter (vm, node->node_index,
- AH_ENCRYPT_ERROR_RX_PKTS,
- from_frame->n_vectors);
- return from_frame->n_vectors;
+ n_left = frame->n_vectors;
+ vlib_buffer_enqueue_to_next (vm, node, from, nexts, n_left);
+
+ return n_left;
}
VLIB_NODE_FN (ah4_encrypt_node) (vlib_main_t * vm,
Code Review / vpp.git / commitdiff