vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ u32 bi0, bi1, next0, next1, sw_if_index0, sw_if_index1;
+ const esp_header_t *esp0, *esp1;
+ const ip4_header_t *ip0, *ip1;
+ vlib_buffer_t *b0, *b1;
+ uword *p0, *p1;
+ u32 len0, len1;
+ u64 key0, key1;
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t *p2, *p3;
+
+ p2 = vlib_get_buffer (vm, from[2]);
+ p3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (p2, STORE);
+ vlib_prefetch_buffer_header (p3, STORE);
+
+ CLIB_PREFETCH (p2->data, sizeof (ip0[0]), STORE);
+ CLIB_PREFETCH (p3->data, sizeof (ip0[0]), STORE);
+ }
+
+ bi0 = to_next[0] = from[0];
+ bi1 = to_next[1] = from[1];
+
+ from += 2;
+ n_left_from -= 2;
+ to_next += 2;
+ n_left_to_next -= 2;
+ next0 = next1 = IPSEC_INPUT_NEXT_DROP;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+ ip0 = vlib_buffer_get_current (b0);
+ ip1 = vlib_buffer_get_current (b1);
+ esp0 = (const esp_header_t *) ((u8 *) ip0 + ip4_header_bytes (ip0));
+ esp1 = (const esp_header_t *) ((u8 *) ip1 + ip4_header_bytes (ip1));
+
+ key0 = (u64) ip0->src_address.as_u32 << 32 | (u64) esp0->spi;
+ key1 = (u64) ip1->src_address.as_u32 << 32 | (u64) esp1->spi;
+
+ p0 = hash_get (im->ipsec_if_pool_index_by_key, key0);
+ p1 = hash_get (im->ipsec_if_pool_index_by_key, key1);
+
+ /* stats for the tunnel include all the data after the IP header
+ just like a norml IP-IP tunnel */
+ vlib_buffer_advance (b0, ip4_header_bytes (ip0));
+ vlib_buffer_advance (b1, ip4_header_bytes (ip1));
+ len0 = vlib_buffer_length_in_chain (vm, b0);
+ len1 = vlib_buffer_length_in_chain (vm, b1);
+
+ if (PREDICT_TRUE (NULL != p0))
+ {
+ const ipsec_tunnel_if_t *t0;
+
+ t0 = pool_elt_at_index (im->tunnel_interfaces, p0[0]);
+ vnet_buffer (b0)->ipsec.sad_index = t0->input_sa_index;
+
+ if (PREDICT_TRUE (t0->hw_if_index != ~0))
+ {
+ vnet_buffer (b0)->ipsec.flags = 0;
+ sw_if_index0 = t0->sw_if_index;
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] = sw_if_index0;
+
+ if (PREDICT_FALSE
+ (!(t0->flags & VNET_HW_INTERFACE_FLAG_LINK_UP)))
+ {
+ vlib_increment_combined_counter
+ (drop_counter, thread_index, sw_if_index0, 1, len0);
+ b0->error = node->errors[IPSEC_IF_INPUT_ERROR_DISABLED];
+ n_disabled++;
+ goto pkt1;
+ }
+
+ if (PREDICT_TRUE (sw_if_index0 == last_sw_if_index))
+ {
+ n_packets++;
+ n_bytes += len0;
+ }
+ else
+ {
+ if (last_t)
+ {
+ vlib_increment_combined_counter
+ (rx_counter, thread_index, sw_if_index0,
+ n_packets, n_bytes);
+ }
+
+ last_sw_if_index = sw_if_index0;
+ last_t = t0;
+ n_packets = 1;
+ n_bytes = len0;
+ }
+ }
+ else
+ {
+ vnet_buffer (b0)->ipsec.flags = IPSEC_FLAG_IPSEC_GRE_TUNNEL;
+ }
+
+ next0 = im->esp4_decrypt_next_index;
+ }
+ else
+ {
+ b0->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL];
+ n_no_tunnel++;
+ }
+
+ pkt1:
+ if (PREDICT_TRUE (NULL != p1))
+ {
+ const ipsec_tunnel_if_t *t1;
+
+ t1 = pool_elt_at_index (im->tunnel_interfaces, p1[0]);
+ vnet_buffer (b1)->ipsec.sad_index = t1->input_sa_index;
+
+ if (PREDICT_TRUE (t1->hw_if_index != ~0))
+ {
+ vnet_buffer (b1)->ipsec.flags = 0;
+ sw_if_index1 = t1->sw_if_index;
+ vnet_buffer (b1)->sw_if_index[VLIB_RX] = sw_if_index1;
+
+ if (PREDICT_FALSE
+ (!(t1->flags & VNET_HW_INTERFACE_FLAG_LINK_UP)))
+ {
+ vlib_increment_combined_counter
+ (drop_counter, thread_index, sw_if_index1, 1, len1);
+ b1->error = node->errors[IPSEC_IF_INPUT_ERROR_DISABLED];
+ n_disabled++;
+ goto trace1;
+ }
+
+ if (PREDICT_TRUE (sw_if_index1 == last_sw_if_index))
+ {
+ n_packets++;
+ n_bytes += len1;
+ }
+ else
+ {
+ if (last_t)
+ {
+ vlib_increment_combined_counter
+ (rx_counter, thread_index, sw_if_index1,
+ n_packets, n_bytes);
+ }
+
+ last_sw_if_index = sw_if_index1;
+ last_t = t1;
+ n_packets = 1;
+ n_bytes = len1;
+ }
+ }
+ else
+ {
+ vnet_buffer (b1)->ipsec.flags = IPSEC_FLAG_IPSEC_GRE_TUNNEL;
+ }
+
+ next1 = im->esp4_decrypt_next_index;
+ }
+ else
+ {
+ b1->error = node->errors[IPSEC_IF_INPUT_ERROR_NO_TUNNEL];
+ n_no_tunnel++;
+ }
+
+ trace1:
+ if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ ipsec_if_input_trace_t *tr =
+ vlib_add_trace (vm, node, b0, sizeof (*tr));
+ tr->spi = clib_host_to_net_u32 (esp0->spi);
+ tr->seq = clib_host_to_net_u32 (esp0->seq);
+ }
+ if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
+ {
+ ipsec_if_input_trace_t *tr =
+ vlib_add_trace (vm, node, b1, sizeof (*tr));
+ tr->spi = clib_host_to_net_u32 (esp1->spi);
+ tr->seq = clib_host_to_net_u32 (esp1->seq);
+ }
+
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index, to_next,
+ n_left_to_next,
+ bi0, bi1, next0, next1);
+ }
while (n_left_from > 0 && n_left_to_next > 0)
{
u32 bi0, next0, sw_if_index0;
Code Review / vpp.git / blobdiff