+++ /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 <vppinfra/error.h>
-#include <vppinfra/hash.h>
-#include <vnet/vnet.h>
-#include <vnet/ip/ip.h>
-#include <vnet/ethernet/ethernet.h>
-#include <vnet/vxlan-gpe/vxlan_gpe.h>
-#include <ioam/lib-vxlan-gpe/vxlan_gpe_ioam.h>
-
-/* Statistics (not really errors) */
-#define foreach_vxlan_gpe_pop_ioam_v4_error \
-_(POPPED, "good packets popped")
-
-static char *vxlan_gpe_pop_ioam_v4_error_strings[] = {
-#define _(sym,string) string,
- foreach_vxlan_gpe_pop_ioam_v4_error
-#undef _
-};
-
-typedef enum
-{
-#define _(sym,str) VXLAN_GPE_POP_IOAM_V4_ERROR_##sym,
- foreach_vxlan_gpe_pop_ioam_v4_error
-#undef _
- VXLAN_GPE_POP_IOAM_V4_N_ERROR,
-} vxlan_gpe_pop_ioam_v4_error_t;
-
-typedef struct
-{
- ioam_trace_t fmt_trace;
-} vxlan_gpe_pop_ioam_v4_trace_t;
-
-
-u8 *
-format_vxlan_gpe_pop_ioam_v4_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 *);
- vxlan_gpe_pop_ioam_v4_trace_t *t1
- = va_arg (*args, vxlan_gpe_pop_ioam_v4_trace_t *);
- ioam_trace_t *t = &(t1->fmt_trace);
- vxlan_gpe_ioam_option_t *fmt_trace0;
- vxlan_gpe_ioam_option_t *opt0, *limit0;
- vxlan_gpe_ioam_main_t *hm = &vxlan_gpe_ioam_main;
-
- u8 type0;
-
- fmt_trace0 = (vxlan_gpe_ioam_option_t *) t->option_data;
-
- s = format (s, "VXLAN_GPE_IOAM_POP: next_index %d len %d traced %d",
- t->next_index, fmt_trace0->length, t->trace_len);
-
- opt0 = (vxlan_gpe_ioam_option_t *) (fmt_trace0 + 1);
- limit0 = (vxlan_gpe_ioam_option_t *) ((u8 *) fmt_trace0) + t->trace_len;
-
- while (opt0 < limit0)
- {
- type0 = opt0->type;
- switch (type0)
- {
- case 0: /* Pad, just stop */
- opt0 = (vxlan_gpe_ioam_option_t *) ((u8 *) opt0) + 1;
- break;
-
- default:
- if (hm->trace[type0])
- {
- s = (*hm->trace[type0]) (s, opt0);
- }
- else
- {
- s =
- format (s, "\n unrecognized option %d length %d", type0,
- opt0->length);
- }
- opt0 =
- (vxlan_gpe_ioam_option_t *) (((u8 *) opt0) + opt0->length +
- sizeof (vxlan_gpe_ioam_option_t));
- break;
- }
- }
-
- return s;
-}
-
-always_inline void
-vxlan_gpe_ioam_pop_v4 (vlib_main_t * vm, vlib_node_runtime_t * node,
- vlib_buffer_t * b0)
-{
- ip4_header_t *ip0;
- udp_header_t *udp_hdr0;
- vxlan_gpe_header_t *gpe_hdr0;
- vxlan_gpe_ioam_hdr_t *gpe_ioam0;
-
- ip0 = vlib_buffer_get_current (b0);
-
- udp_hdr0 = (udp_header_t *) (ip0 + 1);
- gpe_hdr0 = (vxlan_gpe_header_t *) (udp_hdr0 + 1);
- gpe_ioam0 = (vxlan_gpe_ioam_hdr_t *) (gpe_hdr0 + 1);
-
- /* Pop the iOAM data */
- vlib_buffer_advance (b0,
- (word) (sizeof (udp_header_t) +
- sizeof (ip4_header_t) +
- sizeof (vxlan_gpe_header_t) +
- gpe_ioam0->length));
-
- return;
-}
-
-
-
-always_inline void
-vxlan_gpe_pop_ioam_v4_one_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vxlan_gpe_main_t * ngm,
- vlib_buffer_t * b0, u32 * next0)
-{
- CLIB_UNUSED (ip4_header_t * ip0);
- CLIB_UNUSED (udp_header_t * udp_hdr0);
- CLIB_UNUSED (vxlan_gpe_header_t * gpe_hdr0);
- CLIB_UNUSED (vxlan_gpe_ioam_hdr_t * gpe_ioam0);
- CLIB_UNUSED (vxlan_gpe_ioam_option_t * opt0);
- CLIB_UNUSED (vxlan_gpe_ioam_option_t * limit0);
- vxlan_gpe_ioam_main_t *hm = &vxlan_gpe_ioam_main;
-
-
- /* Pop the iOAM header */
- ip0 = vlib_buffer_get_current (b0);
- udp_hdr0 = (udp_header_t *) (ip0 + 1);
- gpe_hdr0 = (vxlan_gpe_header_t *) (udp_hdr0 + 1);
- gpe_ioam0 = (vxlan_gpe_ioam_hdr_t *) (gpe_hdr0 + 1);
- opt0 = (vxlan_gpe_ioam_option_t *) (gpe_ioam0 + 1);
- limit0 = (vxlan_gpe_ioam_option_t *) ((u8 *) gpe_ioam0 + gpe_ioam0->length);
-
- /*
- * Basic validity checks
- */
- if (gpe_ioam0->length > clib_net_to_host_u16 (ip0->length))
- {
- next0[0] = VXLAN_GPE_INPUT_NEXT_DROP;
- goto trace00;
- }
-
- /* Scan the set of h-b-h options, process ones that we understand */
- while (opt0 < limit0)
- {
- u8 type0;
- type0 = opt0->type;
- switch (type0)
- {
- case 0: /* Pad1 */
- opt0 = (vxlan_gpe_ioam_option_t *) ((u8 *) opt0) + 1;
- continue;
- case 1: /* PadN */
- break;
- default:
- if (hm->pop_options[type0])
- {
- if ((*hm->pop_options[type0]) (ip0, opt0) < 0)
- {
- next0[0] = VXLAN_GPE_INPUT_NEXT_DROP;
- goto trace00;
- }
- }
- break;
- }
- opt0 =
- (vxlan_gpe_ioam_option_t *) (((u8 *) opt0) + opt0->length +
- sizeof (vxlan_gpe_ioam_hdr_t));
- }
-
-
- next0[0] =
- (gpe_ioam0->protocol < VXLAN_GPE_PROTOCOL_MAX) ?
- ngm->
- decap_next_node_list[gpe_ioam0->protocol] : VXLAN_GPE_INPUT_NEXT_DROP;
-
-trace00:
- if (PREDICT_FALSE (b0->flags & VLIB_BUFFER_IS_TRACED))
- {
- vxlan_gpe_pop_ioam_v4_trace_t *t =
- vlib_add_trace (vm, node, b0, sizeof (*t));
- u32 trace_len = gpe_ioam0->length;
- t->fmt_trace.next_index = next0[0];
- /* Capture the h-b-h option verbatim */
- trace_len =
- trace_len <
- ARRAY_LEN (t->fmt_trace.
- option_data) ? trace_len : ARRAY_LEN (t->fmt_trace.
- option_data);
- t->fmt_trace.trace_len = trace_len;
- clib_memcpy (&(t->fmt_trace.option_data), gpe_ioam0, trace_len);
- }
-
- /* Remove the iOAM header inside the VxLAN-GPE header */
- vxlan_gpe_ioam_pop_v4 (vm, node, b0);
- return;
-}
-
-always_inline void
-vxlan_gpe_pop_ioam_v4_two_inline (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vxlan_gpe_main_t * ngm,
- vlib_buffer_t * b0, vlib_buffer_t * b1,
- u32 * next0, u32 * next1)
-{
-
- vxlan_gpe_pop_ioam_v4_one_inline (vm, node, ngm, b0, next0);
- vxlan_gpe_pop_ioam_v4_one_inline (vm, node, ngm, b1, next1);
-}
-
-
-
-static uword
-vxlan_gpe_pop_ioam (vlib_main_t * vm,
- vlib_node_runtime_t * node,
- vlib_frame_t * from_frame, u8 is_ipv6)
-{
- u32 n_left_from, next_index, *from, *to_next;
- vxlan_gpe_main_t *ngm = &vxlan_gpe_main;
-
- from = vlib_frame_vector_args (from_frame);
- n_left_from = from_frame->n_vectors;
-
- next_index = node->cached_next_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);
-
- while (n_left_from >= 4 && n_left_to_next >= 2)
- {
- u32 bi0, bi1;
- vlib_buffer_t *b0, *b1;
- u32 next0, next1;
-
- /* 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, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
- CLIB_PREFETCH (p3->data, 2 * CLIB_CACHE_LINE_BYTES, LOAD);
- }
-
- bi0 = from[0];
- bi1 = from[1];
- to_next[0] = bi0;
- to_next[1] = bi1;
- from += 2;
- to_next += 2;
- n_left_to_next -= 2;
- n_left_from -= 2;
-
- b0 = vlib_get_buffer (vm, bi0);
- b1 = vlib_get_buffer (vm, bi1);
-
- vxlan_gpe_pop_ioam_v4_two_inline (vm, node, ngm, b0, b1, &next0,
- &next1);
-
-
- 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;
- vlib_buffer_t *b0;
- u32 next0;
-
- 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);
-
- vxlan_gpe_pop_ioam_v4_one_inline (vm, node, ngm, b0, &next0);
-
-
- 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 from_frame->n_vectors;
-}
-
-
-static uword
-vxlan_gpe_pop_ioam_v4 (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * from_frame)
-{
- return vxlan_gpe_pop_ioam (vm, node, from_frame, 0);
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (vxlan_gpe_pop_ioam_v4_node) = {
- .function = vxlan_gpe_pop_ioam_v4,
- .name = "vxlan-gpe-pop-ioam-v4",
- .vector_size = sizeof (u32),
- .format_trace = format_vxlan_gpe_pop_ioam_v4_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(vxlan_gpe_pop_ioam_v4_error_strings),
- .error_strings = vxlan_gpe_pop_ioam_v4_error_strings,
-
- .n_next_nodes = VXLAN_GPE_INPUT_N_NEXT,
-
- .next_nodes = {
-#define _(s,n) [VXLAN_GPE_INPUT_NEXT_##s] = n,
- foreach_vxlan_gpe_input_next
-#undef _
- },
-};
-/* *INDENT-ON* */
-
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff