diff options
Diffstat (limited to 'src/vnet/ip')
| -rw-r--r--[-rwxr-xr-x] | src/vnet/ip/ip4_forward.c | 373 | ||||
| -rw-r--r-- | src/vnet/ip/ip4_forward.h | 427 | ||||
| -rw-r--r-- | src/vnet/ip/ip6_forward.c | 277 | ||||
| -rw-r--r-- | src/vnet/ip/ip6_forward.h | 330 |
4 files changed, 759 insertions, 648 deletions
diff --git a/src/vnet/ip/ip4_forward.c b/src/vnet/ip/ip4_forward.c index a0f3a4bfae0..ff582960ed0 100755..100644 --- a/src/vnet/ip/ip4_forward.c +++ b/src/vnet/ip/ip4_forward.c @@ -53,378 +53,7 @@ #include <vnet/dpo/classify_dpo.h> #include <vnet/mfib/mfib_table.h> /* 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 <vnet/ip/ip4_forward.h> /** @brief IPv4 lookup node. @node ip4-lookup diff --git a/src/vnet/ip/ip4_forward.h b/src/vnet/ip/ip4_forward.h new file mode 100644 index 00000000000..71f58f14e6d --- /dev/null +++ b/src/vnet/ip/ip4_forward.h @@ -0,0 +1,427 @@ +/* + * Copyright (c) 2015 Cisco 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 copy 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. + */ +/* + * ip/ip4_forward.h: IP v4 forwarding + * + * Copyright (c) 2008 Eliot Dresselhaus + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef __included_ip4_forward_h__ +#define __included_ip4_forward_h__ + +#include <vnet/fib/ip4_fib.h> +#include <vnet/dpo/load_balance_map.h> + +/** + * @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; +} + +#endif /* __included_ip4_forward_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ diff --git a/src/vnet/ip/ip6_forward.c b/src/vnet/ip/ip6_forward.c index fc71c3d2d97..4fd7129e408 100644 --- a/src/vnet/ip/ip6_forward.c +++ b/src/vnet/ip/ip6_forward.c @@ -50,286 +50,11 @@ #include <vnet/dpo/classify_dpo.h> #include <vppinfra/bihash_template.c> +#include <vnet/ip/ip6_forward.h> /* Flag used by IOAM code. Classifier sets it pop-hop-by-hop checks it */ #define OI_DECAP 0x80000000 -/** - * @file - * @brief IPv6 Forwarding. - * - * This file contains the source code for IPv6 forwarding. - */ - - -always_inline uword -ip6_lookup_inline (vlib_main_t * vm, - vlib_node_runtime_t * node, vlib_frame_t * frame) -{ - ip6_main_t *im = &ip6_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 >= 4 && n_left_to_next >= 2) - { - vlib_buffer_t *p0, *p1; - u32 pi0, pi1, lbi0, lbi1, wrong_next; - ip_lookup_next_t next0, next1; - ip6_header_t *ip0, *ip1; - ip6_address_t *dst_addr0, *dst_addr1; - u32 fib_index0, fib_index1; - u32 flow_hash_config0, flow_hash_config1; - const dpo_id_t *dpo0, *dpo1; - const load_balance_t *lb0, *lb1; - - /* 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, LOAD); - vlib_prefetch_buffer_header (p3, LOAD); - CLIB_PREFETCH (p2->data, sizeof (ip0[0]), LOAD); - CLIB_PREFETCH (p3->data, sizeof (ip0[0]), LOAD); - } - - pi0 = to_next[0] = from[0]; - pi1 = to_next[1] = from[1]; - - p0 = vlib_get_buffer (vm, pi0); - p1 = vlib_get_buffer (vm, pi1); - - ip0 = vlib_buffer_get_current (p0); - ip1 = vlib_buffer_get_current (p1); - - dst_addr0 = &ip0->dst_address; - dst_addr1 = &ip1->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_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]; - - lbi0 = ip6_fib_table_fwding_lookup (im, fib_index0, dst_addr0); - lbi1 = ip6_fib_table_fwding_lookup (im, fib_index1, dst_addr1); - - lb0 = load_balance_get (lbi0); - lb1 = load_balance_get (lbi1); - ASSERT (lb0->lb_n_buckets > 0); - ASSERT (lb1->lb_n_buckets > 0); - ASSERT (is_pow2 (lb0->lb_n_buckets)); - ASSERT (is_pow2 (lb1->lb_n_buckets)); - - vnet_buffer (p0)->ip.flow_hash = vnet_buffer (p1)->ip.flow_hash = 0; - - if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) - { - flow_hash_config0 = lb0->lb_hash_config; - vnet_buffer (p0)->ip.flow_hash = - ip6_compute_flow_hash (ip0, flow_hash_config0); - dpo0 = - load_balance_get_fwd_bucket (lb0, - (vnet_buffer (p0)->ip.flow_hash & - (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; - vnet_buffer (p1)->ip.flow_hash = - ip6_compute_flow_hash (ip1, flow_hash_config1); - dpo1 = - load_balance_get_fwd_bucket (lb1, - (vnet_buffer (p1)->ip.flow_hash & - (lb1->lb_n_buckets_minus_1))); - } - else - { - dpo1 = load_balance_get_bucket_i (lb1, 0); - } - next0 = dpo0->dpoi_next_node; - next1 = dpo1->dpoi_next_node; - - /* Only process the HBH Option Header if explicitly configured to do so */ - if (PREDICT_FALSE - (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)) - { - next0 = (dpo_is_adj (dpo0) && im->hbh_enabled) ? - (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next0; - } - if (PREDICT_FALSE - (ip1->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)) - { - next1 = (dpo_is_adj (dpo1) && im->hbh_enabled) ? - (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next1; - } - vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; - vnet_buffer (p1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index; - - vlib_increment_combined_counter - (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, p0)); - vlib_increment_combined_counter - (cm, thread_index, lbi1, 1, vlib_buffer_length_in_chain (vm, p1)); - - from += 2; - to_next += 2; - n_left_to_next -= 2; - n_left_from -= 2; - - wrong_next = (next0 != next) + 2 * (next1 != next); - if (PREDICT_FALSE (wrong_next != 0)) - { - switch (wrong_next) - { - case 1: - /* A B A */ - to_next[-2] = pi1; - to_next -= 1; - n_left_to_next += 1; - vlib_set_next_frame_buffer (vm, node, next0, pi0); - break; - - case 2: - /* A A B */ - to_next -= 1; - n_left_to_next += 1; - vlib_set_next_frame_buffer (vm, node, next1, pi1); - break; - - case 3: - /* A B C */ - to_next -= 2; - n_left_to_next += 2; - vlib_set_next_frame_buffer (vm, node, next0, pi0); - vlib_set_next_frame_buffer (vm, node, next1, pi1); - if (next0 == next1) - { - /* A B B */ - vlib_put_next_frame (vm, node, next, n_left_to_next); - next = next1; - vlib_get_next_frame (vm, node, next, to_next, - n_left_to_next); - } - } - } - } - - while (n_left_from > 0 && n_left_to_next > 0) - { - vlib_buffer_t *p0; - ip6_header_t *ip0; - u32 pi0, lbi0; - ip_lookup_next_t next0; - load_balance_t *lb0; - ip6_address_t *dst_addr0; - u32 fib_index0, flow_hash_config0; - const dpo_id_t *dpo0; - - 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]; - - lbi0 = ip6_fib_table_fwding_lookup (im, fib_index0, dst_addr0); - - lb0 = load_balance_get (lbi0); - flow_hash_config0 = lb0->lb_hash_config; - - vnet_buffer (p0)->ip.flow_hash = 0; - ASSERT (lb0->lb_n_buckets > 0); - ASSERT (is_pow2 (lb0->lb_n_buckets)); - - if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) - { - flow_hash_config0 = lb0->lb_hash_config; - vnet_buffer (p0)->ip.flow_hash = - ip6_compute_flow_hash (ip0, flow_hash_config0); - dpo0 = - load_balance_get_fwd_bucket (lb0, - (vnet_buffer (p0)->ip.flow_hash & - (lb0->lb_n_buckets_minus_1))); - } - else - { - dpo0 = load_balance_get_bucket_i (lb0, 0); - } - - dpo0 = load_balance_get_bucket_i (lb0, - (vnet_buffer (p0)->ip.flow_hash & - lb0->lb_n_buckets_minus_1)); - next0 = dpo0->dpoi_next_node; - - /* Only process the HBH Option Header if explicitly configured to do so */ - if (PREDICT_FALSE - (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)) - { - next0 = (dpo_is_adj (dpo0) && im->hbh_enabled) ? - (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next0; - } - 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) - ip6_forward_next_trace (vm, node, frame, VLIB_TX); - - return frame->n_vectors; -} - static void ip6_add_interface_routes (vnet_main_t * vnm, u32 sw_if_index, ip6_main_t * im, u32 fib_index, diff --git a/src/vnet/ip/ip6_forward.h b/src/vnet/ip/ip6_forward.h new file mode 100644 index 00000000000..790a2bb1ac1 --- /dev/null +++ b/src/vnet/ip/ip6_forward.h @@ -0,0 +1,330 @@ +/* + * Copyright (c) 2016 Cisco 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 copy 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. + */ +/* + * ip/ip6_forward.h: IP v6 forwarding + * + * Copyright (c) 2008 Eliot Dresselhaus + * + * Permission is hereby granted, free of charge, to any person obtaining + * a copy of this software and associated documentation files (the + * "Software"), to deal in the Software without restriction, including + * without limitation the rights to use, copy, modify, merge, publish, + * distribute, sublicense, and/or sell copies of the Software, and to + * permit persons to whom the Software is furnished to do so, subject to + * the following conditions: + * + * The above copyright notice and this permission notice shall be + * included in all copies or substantial portions of the Software. + * + * THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, + * EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF + * MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND + * NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE + * LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION + * OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION + * WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE. + */ + +#ifndef __included_ip6_forward_h__ +#define __included_ip6_forward_h__ + +#include <vnet/fib/ip6_fib.h> +#include <vnet/dpo/load_balance_map.h> + +/** + * @file + * @brief IPv6 Forwarding. + * + * This file contains the source code for IPv6 forwarding. + */ + + +always_inline uword +ip6_lookup_inline (vlib_main_t * vm, + vlib_node_runtime_t * node, vlib_frame_t * frame) +{ + ip6_main_t *im = &ip6_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 >= 4 && n_left_to_next >= 2) + { + vlib_buffer_t *p0, *p1; + u32 pi0, pi1, lbi0, lbi1, wrong_next; + ip_lookup_next_t next0, next1; + ip6_header_t *ip0, *ip1; + ip6_address_t *dst_addr0, *dst_addr1; + u32 fib_index0, fib_index1; + u32 flow_hash_config0, flow_hash_config1; + const dpo_id_t *dpo0, *dpo1; + const load_balance_t *lb0, *lb1; + + /* 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, LOAD); + vlib_prefetch_buffer_header (p3, LOAD); + CLIB_PREFETCH (p2->data, sizeof (ip0[0]), LOAD); + CLIB_PREFETCH (p3->data, sizeof (ip0[0]), LOAD); + } + + pi0 = to_next[0] = from[0]; + pi1 = to_next[1] = from[1]; + + p0 = vlib_get_buffer (vm, pi0); + p1 = vlib_get_buffer (vm, pi1); + + ip0 = vlib_buffer_get_current (p0); + ip1 = vlib_buffer_get_current (p1); + + dst_addr0 = &ip0->dst_address; + dst_addr1 = &ip1->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_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]; + + lbi0 = ip6_fib_table_fwding_lookup (im, fib_index0, dst_addr0); + lbi1 = ip6_fib_table_fwding_lookup (im, fib_index1, dst_addr1); + + lb0 = load_balance_get (lbi0); + lb1 = load_balance_get (lbi1); + ASSERT (lb0->lb_n_buckets > 0); + ASSERT (lb1->lb_n_buckets > 0); + ASSERT (is_pow2 (lb0->lb_n_buckets)); + ASSERT (is_pow2 (lb1->lb_n_buckets)); + + vnet_buffer (p0)->ip.flow_hash = vnet_buffer (p1)->ip.flow_hash = 0; + + if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) + { + flow_hash_config0 = lb0->lb_hash_config; + vnet_buffer (p0)->ip.flow_hash = + ip6_compute_flow_hash (ip0, flow_hash_config0); + dpo0 = + load_balance_get_fwd_bucket (lb0, + (vnet_buffer (p0)->ip.flow_hash & + (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; + vnet_buffer (p1)->ip.flow_hash = + ip6_compute_flow_hash (ip1, flow_hash_config1); + dpo1 = + load_balance_get_fwd_bucket (lb1, + (vnet_buffer (p1)->ip.flow_hash & + (lb1->lb_n_buckets_minus_1))); + } + else + { + dpo1 = load_balance_get_bucket_i (lb1, 0); + } + next0 = dpo0->dpoi_next_node; + next1 = dpo1->dpoi_next_node; + + /* Only process the HBH Option Header if explicitly configured to do so */ + if (PREDICT_FALSE + (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)) + { + next0 = (dpo_is_adj (dpo0) && im->hbh_enabled) ? + (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next0; + } + if (PREDICT_FALSE + (ip1->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)) + { + next1 = (dpo_is_adj (dpo1) && im->hbh_enabled) ? + (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next1; + } + vnet_buffer (p0)->ip.adj_index[VLIB_TX] = dpo0->dpoi_index; + vnet_buffer (p1)->ip.adj_index[VLIB_TX] = dpo1->dpoi_index; + + vlib_increment_combined_counter + (cm, thread_index, lbi0, 1, vlib_buffer_length_in_chain (vm, p0)); + vlib_increment_combined_counter + (cm, thread_index, lbi1, 1, vlib_buffer_length_in_chain (vm, p1)); + + from += 2; + to_next += 2; + n_left_to_next -= 2; + n_left_from -= 2; + + wrong_next = (next0 != next) + 2 * (next1 != next); + if (PREDICT_FALSE (wrong_next != 0)) + { + switch (wrong_next) + { + case 1: + /* A B A */ + to_next[-2] = pi1; + to_next -= 1; + n_left_to_next += 1; + vlib_set_next_frame_buffer (vm, node, next0, pi0); + break; + + case 2: + /* A A B */ + to_next -= 1; + n_left_to_next += 1; + vlib_set_next_frame_buffer (vm, node, next1, pi1); + break; + + case 3: + /* A B C */ + to_next -= 2; + n_left_to_next += 2; + vlib_set_next_frame_buffer (vm, node, next0, pi0); + vlib_set_next_frame_buffer (vm, node, next1, pi1); + if (next0 == next1) + { + /* A B B */ + vlib_put_next_frame (vm, node, next, n_left_to_next); + next = next1; + vlib_get_next_frame (vm, node, next, to_next, + n_left_to_next); + } + } + } + } + + while (n_left_from > 0 && n_left_to_next > 0) + { + vlib_buffer_t *p0; + ip6_header_t *ip0; + u32 pi0, lbi0; + ip_lookup_next_t next0; + load_balance_t *lb0; + ip6_address_t *dst_addr0; + u32 fib_index0, flow_hash_config0; + const dpo_id_t *dpo0; + + 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]; + + lbi0 = ip6_fib_table_fwding_lookup (im, fib_index0, dst_addr0); + + lb0 = load_balance_get (lbi0); + flow_hash_config0 = lb0->lb_hash_config; + + vnet_buffer (p0)->ip.flow_hash = 0; + ASSERT (lb0->lb_n_buckets > 0); + ASSERT (is_pow2 (lb0->lb_n_buckets)); + + if (PREDICT_FALSE (lb0->lb_n_buckets > 1)) + { + flow_hash_config0 = lb0->lb_hash_config; + vnet_buffer (p0)->ip.flow_hash = + ip6_compute_flow_hash (ip0, flow_hash_config0); + dpo0 = + load_balance_get_fwd_bucket (lb0, + (vnet_buffer (p0)->ip.flow_hash & + (lb0->lb_n_buckets_minus_1))); + } + else + { + dpo0 = load_balance_get_bucket_i (lb0, 0); + } + + dpo0 = load_balance_get_bucket_i (lb0, + (vnet_buffer (p0)->ip.flow_hash & + lb0->lb_n_buckets_minus_1)); + next0 = dpo0->dpoi_next_node; + + /* Only process the HBH Option Header if explicitly configured to do so */ + if (PREDICT_FALSE + (ip0->protocol == IP_PROTOCOL_IP6_HOP_BY_HOP_OPTIONS)) + { + next0 = (dpo_is_adj (dpo0) && im->hbh_enabled) ? + (ip_lookup_next_t) IP6_LOOKUP_NEXT_HOP_BY_HOP : next0; + } + 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) + ip6_forward_next_trace (vm, node, frame, VLIB_TX); + + return frame->n_vectors; +} + +#endif /*__included_ip6_forward_h__ */ + +/* + * fd.io coding-style-patch-verification: ON + * + * Local Variables: + * eval: (c-set-style "gnu") + * End: + */ |