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authorPaul Vinciguerra <pvinci@vinciconsulting.com>2018-12-06 07:46:13 -0800
committerOle Trøan <otroan@employees.org>2018-12-20 12:43:38 +0000
commitdefde0f87067eb473660794cbd4a2da69fdd191d (patch)
tree41a8e78df46ab9483aaf772622e1ba1e5e2e56c1 /extras/vagrant/vcl_test.sh
parent57f170bdf9967e3f8ea6e937a70c7f86187f95a2 (diff)
Tests: Cleanup @skip decorator.
The runnning environment is static as of module load time, so only evalute the conditions once at module load time. Track-by: VPP-1518 Change-Id: I73b0d17ae1ff90789e70307f168d43921829aec8 Signed-off-by: Paul Vinciguerra <pvinci@vinciconsulting.com>
Diffstat (limited to 'extras/vagrant/vcl_test.sh')
0 files changed, 0 insertions, 0 deletions
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/*
 * Copyright (c) 2018 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.
 */
/**
 * @file syslog protocol UDP transport layer implementation (RFC5426)
 */

#include <vnet/syslog/syslog_udp.h>
#include <vnet/ip/ip4.h>
#include <vnet/udp/udp_packet.h>

void
syslog_add_udp_transport (vlib_main_t * vm, u32 bi)
{
  syslog_main_t *sm = &syslog_main;
  vlib_buffer_t *b = vlib_get_buffer (vm, bi);
  ip4_header_t *ip;
  udp_header_t *udp;

  vlib_buffer_advance (b, -(sizeof (ip4_header_t) + sizeof (udp_header_t)));

  b->flags |= VNET_BUFFER_F_LOCALLY_ORIGINATED;
  vnet_buffer (b)->sw_if_index[VLIB_RX] = 0;
  vnet_buffer (b)->sw_if_index[VLIB_TX] = sm->fib_index;

  ip = vlib_buffer_get_current (b);
  clib_memset (ip, 0, sizeof (*ip));
  udp = (udp_header_t *) (ip + 1);
  clib_memset (udp, 0, sizeof (*udp));

  ip->ip_version_and_header_length = 0x45;
  ip->flags_and_fragment_offset =
    clib_host_to_net_u16 (IP4_HEADER_FLAG_DONT_FRAGMENT);
  ip->ttl = 255;
  ip->protocol = IP_PROTOCOL_UDP;
  ip->src_address.as_u32 = sm->src_address.as_u32;
  ip->dst_address.as_u32 = sm->collector.as_u32;

  udp->src_port = udp->dst_port = clib_host_to_net_u16 (sm->collector_port);

  const u16 ip_length = vlib_buffer_length_in_chain (vm, b);
  ip->length = clib_host_to_net_u16 (ip_length);
  ip->checksum = ip4_header_checksum (ip);

  const u16 udp_length = ip_length - (sizeof (ip4_header_t));
  udp->length = clib_host_to_net_u16 (udp_length);
  /* RFC5426 3.6. */
  udp->checksum = ip4_tcp_udp_compute_checksum (vm, b, ip);
  if (udp->checksum == 0)
    udp->checksum = 0xffff;

  b->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
}

/*
 * fd.io coding-style-patch-verification: ON
 *
 * Local Variables:
 * eval: (c-set-style "gnu")
 * End:
 */