+++ /dev/null
-/*
- * 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.
- */
-#include <vlib/vlib.h>
-#include <vnet/vnet.h>
-#include <vppinfra/error.h>
-#include <srv6-un/un.h>
-
-
-/******************************* Packet tracing *******************************/
-typedef struct
-{
- u32 localsid_index;
-} srv6_un_localsid_trace_t;
-
-
-static u8 *
-format_srv6_un_localsid_trace (u8 * s, va_list * args)
-{
- CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
- CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
- srv6_un_localsid_trace_t *t = va_arg (*args, srv6_un_localsid_trace_t *);
-
- return format (s, "SRv6-uN-localsid: localsid_index %d", t->localsid_index);
-}
-
-/********************************* Next nodes *********************************/
-typedef enum
-{
- SRV6_UN_LOCALSID_NEXT_ERROR,
- SRV6_UN_LOCALSID_NEXT_IP6LOOKUP,
- SRV6_UN_LOCALSID_N_NEXT,
-} srv6_un_localsid_next_t;
-
-/******************************* Local SID node *******************************/
-
-/**
- * @brief Graph node for applying SRv6 uN.
- */
-static uword
-srv6_un_localsid_fn (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * frame)
-{
- ip6_sr_main_t *sm = &sr_main;
- u32 n_left_from, next_index, *from, *to_next;
-
- from = vlib_frame_vector_args (frame);
- n_left_from = frame->n_vectors;
- next_index = node->cached_next_index;
-
- u32 thread_index = vm->thread_index;
-
- while (n_left_from > 0)
- {
- u32 n_left_to_next;
- vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
-
- /* Quad - Loop */
- while (n_left_from >= 8 && n_left_to_next >= 4)
- {
- u32 bi0, bi1, bi2, bi3;
- vlib_buffer_t *b0, *b1, *b2, *b3;
- ip6_header_t *ip0, *ip1, *ip2, *ip3;
- u32 next0, next1, next2, next3;
- next0 = next1 = next2 = next3 = SRV6_UN_LOCALSID_NEXT_IP6LOOKUP;
- ip6_sr_localsid_t *ls0, *ls1, *ls2, *ls3;
-
- /* 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]);
-
- /* Prefetch the buffer header and packet for the N+4 loop iteration */
- 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, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (p5->data, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (p6->data, CLIB_CACHE_LINE_BYTES, STORE);
- CLIB_PREFETCH (p7->data, CLIB_CACHE_LINE_BYTES, STORE);
- }
-
- to_next[0] = bi0 = from[0];
- to_next[1] = bi1 = from[1];
- to_next[2] = bi2 = from[2];
- to_next[3] = bi3 = from[3];
- from += 4;
- to_next += 4;
- n_left_from -= 4;
- n_left_to_next -= 4;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
- b2 = vlib_get_buffer (vm, bi2);
- b3 = vlib_get_buffer (vm, bi3);
-
- ls0 =
- pool_elt_at_index (sm->localsids,
- vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
- ls1 =
- pool_elt_at_index (sm->localsids,
- vnet_buffer (b1)->ip.adj_index[VLIB_TX]);
- ls2 =
- pool_elt_at_index (sm->localsids,
- vnet_buffer (b2)->ip.adj_index[VLIB_TX]);
- ls3 =
- pool_elt_at_index (sm->localsids,
- vnet_buffer (b3)->ip.adj_index[VLIB_TX]);
-
- ip0 = vlib_buffer_get_current (b0);
- ip1 = vlib_buffer_get_current (b1);
- ip2 = vlib_buffer_get_current (b2);
- ip3 = vlib_buffer_get_current (b3);
-
- /* Set Destination Address to Last Segment (index 0) */
- ip0->dst_address.as_u16[2] = ip0->dst_address.as_u16[3];
- ip0->dst_address.as_u16[3] = ip0->dst_address.as_u16[4];
- ip0->dst_address.as_u16[4] = ip0->dst_address.as_u16[5];
- ip0->dst_address.as_u16[5] = ip0->dst_address.as_u16[6];
- ip0->dst_address.as_u16[6] = ip0->dst_address.as_u16[7];
- ip0->dst_address.as_u16[7] = 0x0000;
-
- ip1->dst_address.as_u16[2] = ip1->dst_address.as_u16[3];
- ip1->dst_address.as_u16[3] = ip1->dst_address.as_u16[4];
- ip1->dst_address.as_u16[4] = ip1->dst_address.as_u16[5];
- ip1->dst_address.as_u16[5] = ip1->dst_address.as_u16[6];
- ip1->dst_address.as_u16[6] = ip1->dst_address.as_u16[7];
- ip1->dst_address.as_u16[7] = 0x0000;
-
- ip2->dst_address.as_u16[2] = ip2->dst_address.as_u16[3];
- ip2->dst_address.as_u16[3] = ip2->dst_address.as_u16[4];
- ip2->dst_address.as_u16[4] = ip2->dst_address.as_u16[5];
- ip2->dst_address.as_u16[5] = ip2->dst_address.as_u16[6];
- ip2->dst_address.as_u16[6] = ip2->dst_address.as_u16[7];
- ip2->dst_address.as_u16[7] = 0x0000;
-
- ip3->dst_address.as_u16[2] = ip3->dst_address.as_u16[3];
- ip3->dst_address.as_u16[3] = ip3->dst_address.as_u16[4];
- ip3->dst_address.as_u16[4] = ip3->dst_address.as_u16[5];
- ip3->dst_address.as_u16[5] = ip3->dst_address.as_u16[6];
- ip3->dst_address.as_u16[6] = ip3->dst_address.as_u16[7];
- ip3->dst_address.as_u16[7] = 0x0000;
-
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- srv6_un_localsid_trace_t *tr =
- vlib_add_trace (vm, node, b0, sizeof (*tr));
- tr->localsid_index = ls0 - sm->localsids;
- }
-
- if (PREDICT_FALSE (b1->flags & VLIB_BUFFER_IS_TRACED))
- {
- srv6_un_localsid_trace_t *tr =
- vlib_add_trace (vm, node, b1, sizeof (*tr));
- tr->localsid_index = ls1 - sm->localsids;
- }
-
- if (PREDICT_FALSE (b2->flags & VLIB_BUFFER_IS_TRACED))
- {
- srv6_un_localsid_trace_t *tr =
- vlib_add_trace (vm, node, b2, sizeof (*tr));
- tr->localsid_index = ls2 - sm->localsids;
- }
-
- if (PREDICT_FALSE (b3->flags & VLIB_BUFFER_IS_TRACED))
- {
- srv6_un_localsid_trace_t *tr =
- vlib_add_trace (vm, node, b3, sizeof (*tr));
- tr->localsid_index = ls3 - sm->localsids;
- }
-
- vlib_increment_combined_counter
- (&(sm->sr_ls_valid_counters),
- thread_index, ls0 - sm->localsids,
- 1, vlib_buffer_length_in_chain (vm, b0));
-
- vlib_increment_combined_counter
- (&(sm->sr_ls_valid_counters),
- thread_index, ls1 - sm->localsids,
- 1, vlib_buffer_length_in_chain (vm, b1));
-
- vlib_increment_combined_counter
- (&(sm->sr_ls_valid_counters),
- thread_index, ls2 - sm->localsids,
- 1, vlib_buffer_length_in_chain (vm, b2));
-
- vlib_increment_combined_counter
- (&(sm->sr_ls_valid_counters),
- thread_index, ls3 - sm->localsids,
- 1, vlib_buffer_length_in_chain (vm, b3));
-
- vlib_validate_buffer_enqueue_x4 (vm, node, next_index, to_next,
- n_left_to_next, bi0, bi1, bi2, bi3,
- next0, next1, next2, next3);
- }
-
- while (n_left_from > 0 && n_left_to_next > 0)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- ip6_header_t *ip0 = 0;
- u32 next0 = SRV6_UN_LOCALSID_NEXT_IP6LOOKUP;
- ip6_sr_localsid_t *ls0;
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
-
- b0 = vlib_get_buffer (vm, bi0);
- ip0 = vlib_buffer_get_current (b0);
-
- /* Lookup the SR End behavior based on IP DA (adj) */
- ls0 =
- pool_elt_at_index (sm->localsids,
- vnet_buffer (b0)->ip.adj_index[VLIB_TX]);
-
- /* Set Destination Address to Last Segment (index 0) */
- ip0->dst_address.as_u16[2] = ip0->dst_address.as_u16[3];
- ip0->dst_address.as_u16[3] = ip0->dst_address.as_u16[4];
- ip0->dst_address.as_u16[4] = ip0->dst_address.as_u16[5];
- ip0->dst_address.as_u16[5] = ip0->dst_address.as_u16[6];
- ip0->dst_address.as_u16[6] = ip0->dst_address.as_u16[7];
- ip0->dst_address.as_u16[7] = 0x0000;
-
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- srv6_un_localsid_trace_t *tr =
- vlib_add_trace (vm, node, b0, sizeof (*tr));
- tr->localsid_index = ls0 - sm->localsids;
- }
-
- /* This increments the SRv6 per LocalSID counters. */
- vlib_increment_combined_counter
- (&(sm->sr_ls_valid_counters),
- thread_index, ls0 - sm->localsids,
- 1, vlib_buffer_length_in_chain (vm, b0));
-
- vlib_validate_buffer_enqueue_x1 (vm, node, next_index, to_next,
- n_left_to_next, bi0, next0);
-
- }
-
- vlib_put_next_frame (vm, node, next_index, n_left_to_next);
- }
-
- return frame->n_vectors;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (srv6_un_localsid_node) = {
- .function = srv6_un_localsid_fn,
- .name = "srv6-un-localsid",
- .vector_size = sizeof (u32),
- .format_trace = format_srv6_un_localsid_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
- .n_next_nodes = SRV6_UN_LOCALSID_N_NEXT,
- .next_nodes = {
- [SRV6_UN_LOCALSID_NEXT_IP6LOOKUP] = "ip6-lookup",
- [SRV6_UN_LOCALSID_NEXT_ERROR] = "error-drop",
- },
-};
-/* *INDENT-ON* */
-
-/*
-* fd.io coding-style-patch-verification: ON
-*
-* Local Variables:
-* eval: (c-set-style "gnu")
-* End:
-*/
Code Review / vpp.git / blobdiff