X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fip%2Fip4_forward.c;h=ff582960ed09b5e3659b3e53cb9d8e51c2a58d4f;hb=acbde664374303027e261ac096647592ca929f03;hp=a0f3a4bfae0322ac67fd040921a925bbf3252bee;hpb=5368efa045c81b262a93f98a45a113e2af1441b8;p=vpp.git diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c old mode 100755 new mode 100644 index a0f3a4bfae0..ff582960ed0 --- a/src/vnet/ip/ip4_forward.c +++ b/src/vnet/ip/ip4_forward.c @@ -53,378 +53,7 @@ #include #include /* for mFIB table and entry creation */ -/** - * @file - * @brief IPv4 Forwarding. - * - * This file contains the source code for IPv4 forwarding. - */ - -always_inline uword -ip4_lookup_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, - vlib_frame_t * frame, - int lookup_for_responses_to_locally_received_packets) -{ - ip4_main_t *im = &ip4_main; - vlib_combined_counter_main_t *cm = &load_balance_main.lbm_to_counters; - u32 n_left_from, n_left_to_next, *from, *to_next; - ip_lookup_next_t next; - u32 thread_index = vlib_get_thread_index (); - - from = vlib_frame_vector_args (frame); - n_left_from = frame->n_vectors; - next = node->cached_next_index; - - while (n_left_from > 0) - { - vlib_get_next_frame (vm, node, next, to_next, n_left_to_next); - - while (n_left_from >= 8 && n_left_to_next >= 4) - { - vlib_buffer_t *p0, *p1, *p2, *p3; - ip4_header_t *ip0, *ip1, *ip2, *ip3; - ip_lookup_next_t next0, next1, next2, next3; - const load_balance_t *lb0, *lb1, *lb2, *lb3; - ip4_fib_mtrie_t *mtrie0, *mtrie1, *mtrie2, *mtrie3; - ip4_fib_mtrie_leaf_t leaf0, leaf1, leaf2, leaf3; - ip4_address_t *dst_addr0, *dst_addr1, *dst_addr2, *dst_addr3; - u32 pi0, fib_index0, lb_index0; - u32 pi1, fib_index1, lb_index1; - u32 pi2, fib_index2, lb_index2; - u32 pi3, fib_index3, lb_index3; - flow_hash_config_t flow_hash_config0, flow_hash_config1; - flow_hash_config_t flow_hash_config2, flow_hash_config3; - u32 hash_c0, hash_c1, hash_c2, hash_c3; - const dpo_id_t *dpo0, *dpo1, *dpo2, *dpo3; - - /* Prefetch next iteration. */ - { - vlib_buffer_t *p4, *p5, *p6, *p7; - - p4 = vlib_get_buffer (vm, from[4]); - p5 = vlib_get_buffer (vm, from[5]); - p6 = vlib_get_buffer (vm, from[6]); - p7 = vlib_get_buffer (vm, from[7]); - - vlib_prefetch_buffer_header (p4, LOAD); - vlib_prefetch_buffer_header (p5, LOAD); - vlib_prefetch_buffer_header (p6, LOAD); - vlib_prefetch_buffer_header (p7, LOAD); - - CLIB_PREFETCH (p4->data, sizeof (ip0[0]), LOAD); - CLIB_PREFETCH (p5->data, sizeof (ip0[0]), LOAD); - CLIB_PREFETCH (p6->data, sizeof (ip0[0]), LOAD); - CLIB_PREFETCH (p7->data, sizeof (ip0[0]), LOAD); - } - - pi0 = to_next[0] = from[0]; - pi1 = to_next[1] = from[1]; - pi2 = to_next[2] = from[2]; - pi3 = to_next[3] = from[3]; - - from += 4; - to_next += 4; - n_left_to_next -= 4; - n_left_from -= 4; - - p0 = vlib_get_buffer (vm, pi0); - p1 = vlib_get_buffer (vm, pi1); - p2 = vlib_get_buffer (vm, pi2); - p3 = vlib_get_buffer (vm, pi3); - - ip0 = vlib_buffer_get_current (p0); - ip1 = vlib_buffer_get_current (p1); - ip2 = vlib_buffer_get_current (p2); - ip3 = vlib_buffer_get_current (p3); - - dst_addr0 = &ip0->dst_address; - dst_addr1 = &ip1->dst_address; - dst_addr2 = &ip2->dst_address; - dst_addr3 = &ip3->dst_address; - - fib_index0 = - vec_elt (im->fib_index_by_sw_if_index, - vnet_buffer (p0)->sw_if_index[VLIB_RX]); - fib_index1 = - vec_elt (im->fib_index_by_sw_if_index, - vnet_buffer (p1)->sw_if_index[VLIB_RX]); - fib_index2 = - vec_elt (im->fib_index_by_sw_if_index, - vnet_buffer (p2)->sw_if_index[VLIB_RX]); - fib_index3 = - vec_elt (im->fib_index_by_sw_if_index, - vnet_buffer (p3)->sw_if_index[VLIB_RX]); - fib_index0 = - (vnet_buffer (p0)->sw_if_index[VLIB_TX] == - (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX]; - fib_index1 = - (vnet_buffer (p1)->sw_if_index[VLIB_TX] == - (u32) ~ 0) ? fib_index1 : vnet_buffer (p1)->sw_if_index[VLIB_TX]; - fib_index2 = - (vnet_buffer (p2)->sw_if_index[VLIB_TX] == - (u32) ~ 0) ? fib_index2 : vnet_buffer (p2)->sw_if_index[VLIB_TX]; - fib_index3 = - (vnet_buffer (p3)->sw_if_index[VLIB_TX] == - (u32) ~ 0) ? fib_index3 : vnet_buffer (p3)->sw_if_index[VLIB_TX]; - - - if (!lookup_for_responses_to_locally_received_packets) - { - mtrie0 = &ip4_fib_get (fib_index0)->mtrie; - mtrie1 = &ip4_fib_get (fib_index1)->mtrie; - mtrie2 = &ip4_fib_get (fib_index2)->mtrie; - mtrie3 = &ip4_fib_get (fib_index3)->mtrie; - - leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, dst_addr0); - leaf1 = ip4_fib_mtrie_lookup_step_one (mtrie1, dst_addr1); - leaf2 = ip4_fib_mtrie_lookup_step_one (mtrie2, dst_addr2); - leaf3 = ip4_fib_mtrie_lookup_step_one (mtrie3, dst_addr3); - } - - if (!lookup_for_responses_to_locally_received_packets) - { - leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2); - leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 2); - leaf2 = ip4_fib_mtrie_lookup_step (mtrie2, leaf2, dst_addr2, 2); - leaf3 = ip4_fib_mtrie_lookup_step (mtrie3, leaf3, dst_addr3, 2); - } - - if (!lookup_for_responses_to_locally_received_packets) - { - leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3); - leaf1 = ip4_fib_mtrie_lookup_step (mtrie1, leaf1, dst_addr1, 3); - leaf2 = ip4_fib_mtrie_lookup_step (mtrie2, leaf2, dst_addr2, 3); - leaf3 = ip4_fib_mtrie_lookup_step (mtrie3, leaf3, dst_addr3, 3); - } - - if (lookup_for_responses_to_locally_received_packets) - { - lb_index0 = vnet_buffer (p0)->ip.adj_index[VLIB_RX]; - lb_index1 = vnet_buffer (p1)->ip.adj_index[VLIB_RX]; - lb_index2 = vnet_buffer (p2)->ip.adj_index[VLIB_RX]; - lb_index3 = vnet_buffer (p3)->ip.adj_index[VLIB_RX]; - } - else - { - lb_index0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); - lb_index1 = ip4_fib_mtrie_leaf_get_adj_index (leaf1); - lb_index2 = ip4_fib_mtrie_leaf_get_adj_index (leaf2); - lb_index3 = ip4_fib_mtrie_leaf_get_adj_index (leaf3); - } - - ASSERT (lb_index0 && lb_index1 && lb_index2 && lb_index3); - lb0 = load_balance_get (lb_index0); - lb1 = load_balance_get (lb_index1); - lb2 = load_balance_get (lb_index2); - lb3 = load_balance_get (lb_index3); - - ASSERT (lb0->lb_n_buckets > 0); - ASSERT (is_pow2 (lb0->lb_n_buckets)); - ASSERT (lb1->lb_n_buckets > 0); - ASSERT (is_pow2 (lb1->lb_n_buckets)); - ASSERT (lb2->lb_n_buckets > 0); - ASSERT (is_pow2 (lb2->lb_n_buckets)); - ASSERT (lb3->lb_n_buckets > 0); - ASSERT (is_pow2 (lb3->lb_n_buckets)); - - /* Use flow hash to compute multipath adjacency. */ - hash_c0 = vnet_buffer (p0)->ip.flow_hash = 0; - hash_c1 = vnet_buffer (p1)->ip.flow_hash = 0; - hash_c2 = vnet_buffer (p2)->ip.flow_hash = 0; - hash_c3 = vnet_buffer (p3)->ip.flow_hash = 0; - if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) - { - flow_hash_config0 = lb0->lb_hash_config; - hash_c0 = vnet_buffer (p0)->ip.flow_hash = - ip4_compute_flow_hash (ip0, flow_hash_config0); - dpo0 = - load_balance_get_fwd_bucket (lb0, - (hash_c0 & - (lb0->lb_n_buckets_minus_1))); - } - else - { - dpo0 = load_balance_get_bucket_i (lb0, 0); - } - if (PREDICT_FALSE (lb1->lb_n_buckets > 1)) - { - flow_hash_config1 = lb1->lb_hash_config; - hash_c1 = vnet_buffer (p1)->ip.flow_hash = - ip4_compute_flow_hash (ip1, flow_hash_config1); - dpo1 = - load_balance_get_fwd_bucket (lb1, - (hash_c1 & - (lb1->lb_n_buckets_minus_1))); - } - else - { - dpo1 = load_balance_get_bucket_i (lb1, 0); - } - if (PREDICT_FALSE (lb2->lb_n_buckets > 1)) - { - flow_hash_config2 = lb2->lb_hash_config; - hash_c2 = vnet_buffer (p2)->ip.flow_hash = - ip4_compute_flow_hash (ip2, flow_hash_config2); - dpo2 = - load_balance_get_fwd_bucket (lb2, - (hash_c2 & - (lb2->lb_n_buckets_minus_1))); - } - else - { - dpo2 = load_balance_get_bucket_i (lb2, 0); - } - if (PREDICT_FALSE (lb3->lb_n_buckets > 1)) - { - flow_hash_config3 = lb3->lb_hash_config; - hash_c3 = vnet_buffer (p3)->ip.flow_hash = - ip4_compute_flow_hash (ip3, flow_hash_config3); - dpo3 = - load_balance_get_fwd_bucket (lb3, - (hash_c3 & - (lb3->lb_n_buckets_minus_1))); - } - else - { - dpo3 = load_balance_get_bucket_i (lb3, 0); - } - - next0 = dpo0->dpoi_next_node; - vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; - next1 = dpo1->dpoi_next_node; - vnet_buffer (p1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index; - next2 = dpo2->dpoi_next_node; - vnet_buffer (p2)->ip.adj_index[VLIB_TX] = dpo2->dpoi_index; - next3 = dpo3->dpoi_next_node; - vnet_buffer (p3)->ip.adj_index[VLIB_TX] = dpo3->dpoi_index; - - vlib_increment_combined_counter - (cm, thread_index, lb_index0, 1, - vlib_buffer_length_in_chain (vm, p0)); - vlib_increment_combined_counter - (cm, thread_index, lb_index1, 1, - vlib_buffer_length_in_chain (vm, p1)); - vlib_increment_combined_counter - (cm, thread_index, lb_index2, 1, - vlib_buffer_length_in_chain (vm, p2)); - vlib_increment_combined_counter - (cm, thread_index, lb_index3, 1, - vlib_buffer_length_in_chain (vm, p3)); - - vlib_validate_buffer_enqueue_x4 (vm, node, next, - to_next, n_left_to_next, - pi0, pi1, pi2, pi3, - next0, next1, next2, next3); - } - - while (n_left_from > 0 && n_left_to_next > 0) - { - vlib_buffer_t *p0; - ip4_header_t *ip0; - ip_lookup_next_t next0; - const load_balance_t *lb0; - ip4_fib_mtrie_t *mtrie0; - ip4_fib_mtrie_leaf_t leaf0; - ip4_address_t *dst_addr0; - u32 pi0, fib_index0, lbi0; - flow_hash_config_t flow_hash_config0; - const dpo_id_t *dpo0; - u32 hash_c0; - - pi0 = from[0]; - to_next[0] = pi0; - - p0 = vlib_get_buffer (vm, pi0); - - ip0 = vlib_buffer_get_current (p0); - - dst_addr0 = &ip0->dst_address; - - fib_index0 = - vec_elt (im->fib_index_by_sw_if_index, - vnet_buffer (p0)->sw_if_index[VLIB_RX]); - fib_index0 = - (vnet_buffer (p0)->sw_if_index[VLIB_TX] == - (u32) ~ 0) ? fib_index0 : vnet_buffer (p0)->sw_if_index[VLIB_TX]; - - if (!lookup_for_responses_to_locally_received_packets) - { - mtrie0 = &ip4_fib_get (fib_index0)->mtrie; - - leaf0 = ip4_fib_mtrie_lookup_step_one (mtrie0, dst_addr0); - } - - if (!lookup_for_responses_to_locally_received_packets) - leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 2); - - if (!lookup_for_responses_to_locally_received_packets) - leaf0 = ip4_fib_mtrie_lookup_step (mtrie0, leaf0, dst_addr0, 3); - - if (lookup_for_responses_to_locally_received_packets) - lbi0 = vnet_buffer (p0)->ip.adj_index[VLIB_RX]; - else - { - /* Handle default route. */ - lbi0 = ip4_fib_mtrie_leaf_get_adj_index (leaf0); - } - - ASSERT (lbi0); - lb0 = load_balance_get (lbi0); - - ASSERT (lb0->lb_n_buckets > 0); - ASSERT (is_pow2 (lb0->lb_n_buckets)); - - /* Use flow hash to compute multipath adjacency. */ - hash_c0 = vnet_buffer (p0)->ip.flow_hash = 0; - if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) - { - flow_hash_config0 = lb0->lb_hash_config; - - hash_c0 = vnet_buffer (p0)->ip.flow_hash = - ip4_compute_flow_hash (ip0, flow_hash_config0); - dpo0 = - load_balance_get_fwd_bucket (lb0, - (hash_c0 & - (lb0->lb_n_buckets_minus_1))); - } - else - { - dpo0 = load_balance_get_bucket_i (lb0, 0); - } - - next0 = dpo0->dpoi_next_node; - vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; - - vlib_increment_combined_counter (cm, thread_index, lbi0, 1, - vlib_buffer_length_in_chain (vm, - p0)); - - from += 1; - to_next += 1; - n_left_to_next -= 1; - n_left_from -= 1; - - if (PREDICT_FALSE (next0 != next)) - { - n_left_to_next += 1; - vlib_put_next_frame (vm, node, next, n_left_to_next); - next = next0; - vlib_get_next_frame (vm, node, next, to_next, n_left_to_next); - to_next[0] = pi0; - to_next += 1; - n_left_to_next -= 1; - } - } - - vlib_put_next_frame (vm, node, next, n_left_to_next); - } - - if (node->flags & VLIB_NODE_FLAG_TRACE) - ip4_forward_next_trace (vm, node, frame, VLIB_TX); - - return frame->n_vectors; -} +#include /** @brief IPv4 lookup node. @node ip4-lookup