+++ /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/ip/udp.h>
-#include <vnet/ethernet/ethernet.h>
-#include <vnet/vxlan-gpe/vxlan_gpe.h>
-#include <ioam/lib-vxlan-gpe/vxlan_gpe_ioam_packet.h>
-#include <ioam/lib-vxlan-gpe/vxlan_gpe_ioam.h>
-#include <ioam/lib-vxlan-gpe/vxlan_gpe_ioam_util.h>
-#include <vnet/fib/ip6_fib.h>
-#include <vnet/fib/ip4_fib.h>
-#include <vnet/fib/fib_entry.h>
-
-/* Statistics (not really errors) */
-#define foreach_vxlan_gpe_transit_ioam_error \
-_(ENCAPSULATED, "good packets encapsulated")
-
-static char *vxlan_gpe_transit_ioam_error_strings[] = {
-#define _(sym,string) string,
- foreach_vxlan_gpe_transit_ioam_error
-#undef _
-};
-
-typedef enum
-{
-#define _(sym,str) VXLAN_GPE_TRANSIT_IOAM_ERROR_##sym,
- foreach_vxlan_gpe_transit_ioam_error
-#undef _
- VXLAN_GPE_TRANSIT_IOAM_N_ERROR,
-} vxlan_gpe_transit_ioam_error_t;
-
-typedef enum
-{
- VXLAN_GPE_TRANSIT_IOAM_NEXT_OUTPUT,
- VXLAN_GPE_TRANSIT_IOAM_NEXT_DROP,
- VXLAN_GPE_TRANSIT_IOAM_N_NEXT
-} vxlan_gpe_transit_ioam_next_t;
-
-
-/* *INDENT-OFF* */
-VNET_FEATURE_INIT (vxlan_gpe_transit_ioam, static) =
-{
- .arc_name = "ip4-output",
- .node_name = "vxlan-gpe-transit-ioam",
- .runs_before = VNET_FEATURES ("interface-output"),
-};
-/* *INDENT-ON* */
-
-static uword
-vxlan_gpe_transit_ioam (vlib_main_t * vm,
- vlib_node_runtime_t * node, vlib_frame_t * from_frame)
-{
- u32 n_left_from, next_index, *from, *to_next;
-
- 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 > 0 && n_left_to_next > 0)
- {
- u32 bi0;
- vlib_buffer_t *b0;
- u32 next0 = VXLAN_GPE_TRANSIT_IOAM_NEXT_OUTPUT;
-
- bi0 = from[0];
- to_next[0] = bi0;
- from += 1;
- to_next += 1;
- n_left_from -= 1;
- n_left_to_next -= 1;
- ip4_header_t *ip0;
- u32 iph_offset = 0;
-
- b0 = vlib_get_buffer (vm, bi0);
- iph_offset = vnet_buffer (b0)->ip.save_rewrite_length;
- ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0)
- + iph_offset);
-
- /* just forward non ipv4 packets */
- if (PREDICT_FALSE
- ((ip0->ip_version_and_header_length & 0xF0) == 0x40))
- {
- /* ipv4 packets */
- udp_header_t *udp_hdr0 = (udp_header_t *) (ip0 + 1);
- if (PREDICT_FALSE
- ((ip0->protocol == IP_PROTOCOL_UDP) &&
- (clib_net_to_host_u16 (udp_hdr0->dst_port) ==
- UDP_DST_PORT_vxlan_gpe)))
- {
-
- /* Check the iOAM header */
- vxlan_gpe_header_t *gpe_hdr0 =
- (vxlan_gpe_header_t *) (udp_hdr0 + 1);
-
- if (PREDICT_FALSE
- (gpe_hdr0->protocol == VXLAN_GPE_PROTOCOL_IOAM))
- {
- uword *t = NULL;
- vxlan_gpe_ioam_main_t *hm = &vxlan_gpe_ioam_main;
- fib_prefix_t key4;
- memset (&key4, 0, sizeof (key4));
- key4.fp_proto = FIB_PROTOCOL_IP4;
- key4.fp_addr.ip4.as_u32 = ip0->dst_address.as_u32;
- t = hash_get_mem (hm->dst_by_ip4, &key4);
- if (t)
- {
-
-
- vlib_buffer_advance (b0,
- (word) (sizeof
- (ethernet_header_t)));
- vxlan_gpe_encap_decap_ioam_v4_one_inline (vm, node,
- b0,
- &next0,
- VXLAN_GPE_TRANSIT_IOAM_NEXT_DROP,
- 1
- /* use_adj */
- );
- vlib_buffer_advance (b0,
- -(word) (sizeof
- (ethernet_header_t)));
- }
- }
- }
- }
-
- 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;
-}
-
-/* *INDENT-OFF* */
-VLIB_REGISTER_NODE (vxlan_gpe_transit_ioam_node) = {
- .function = vxlan_gpe_transit_ioam,
- .name = "vxlan-gpe-transit-ioam",
- .vector_size = sizeof (u32),
- .format_trace = format_vxlan_gpe_ioam_v4_trace,
- .type = VLIB_NODE_TYPE_INTERNAL,
-
- .n_errors = ARRAY_LEN(vxlan_gpe_transit_ioam_error_strings),
- .error_strings = vxlan_gpe_transit_ioam_error_strings,
-
- .n_next_nodes = VXLAN_GPE_TRANSIT_IOAM_N_NEXT,
-
- .next_nodes = {
- [VXLAN_GPE_TRANSIT_IOAM_NEXT_OUTPUT] = "interface-output",
- [VXLAN_GPE_TRANSIT_IOAM_NEXT_DROP] = "error-drop",
- },
-
-};
-/* *INDENT-ON* */
-
-
-/*
- * fd.io coding-style-patch-verification: ON
- *
- * Local Variables:
- * eval: (c-set-style "gnu")
- * End:
- */
Code Review / vpp.git / blobdiff