#!/bin/bash
# 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.
set -x
cat /etc/hostname
cat /etc/hosts
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
VIRL_SERVERS=("10.30.51.28" "10.30.51.29" "10.30.51.30")
VIRL_SERVER=""
VIRL_USERNAME=jenkins-in
VIRL_PKEY=priv_key
VIRL_SERVER_STATUS_FILE="status"
VIRL_SERVER_EXPECTED_STATUS="PRODUCTION"
JOB_ARCHIVE_ARTIFACTS=(log.html output.xml report.html honeycomb.log)
LOG_ARCHIVE_ARTIFACTS=(log.html output.xml report.html honeycomb.log)
JOB_ARCHIVE_DIR="archive"
LOG_ARCHIVE_DIR="$WORKSPACE/archives"
mkdir -p ${JOB_ARCHIVE_DIR}
mkdir -p ${LOG_ARCHIVE_DIR}
STREAM=$1
OS=$2
if [ -f "/etc/redhat-release" ]; then
DISTRO="CENTOS"
sudo yum install -y python-devel python-virtualenv
VIRL_TOPOLOGY=$(cat ${SCRIPT_DIR}/VIRL_TOPOLOGY_CENTOS)
VIRL_RELEASE=$(cat ${SCRIPT_DIR}/VIRL_RELEASE_CENTOS)
else
DISTRO="UBUNTU"
export DEBIAN_FRONTEND=noninteractive
sudo apt-get -y update
sudo apt-get -y install libpython2.7-dev python-virtualenv
VIRL_TOPOLOGY=$(cat ${SCRIPT_DIR}/VIRL_TOPOLOGY_UBUNTU)
VIRL_RELEASE=$(cat ${SCRIPT_DIR}/VIRL_RELEASE_UBUNTU)
fi
SSH_OPTIONS="-i ${VIRL_PKEY} -o StrictHostKeyChecking=no -o UserKnownHostsFile=/dev/null -o BatchMode=yes -o LogLevel=error"
function ssh_do() {
echo
echo "### " ssh $@
ssh ${SSH_OPTIONS} $@
}
rm -f ${VIRL_PKEY}
cat > ${VIRL_PKEY} <<EOF
-----BEGIN RSA PRIVATE KEY-----
MIIEpQIBAAKCAQEA+IHXq87GcqMR1C47rzx6Cbip5Ghq8pKrbqKrP5Nf41HcYrT6
GOXl9nFWKsMOzIlIn+8y7Il27eZh7csQGApbg8QLiHMtcYEmWNzKZpkqg4nuAPxX
VXwlKgnKX902SrET9Gp9TDayiHtCRWVfrlPPPSA0UEXW6BjLN/uHJ+W/Xzrrab+9
asBVa05vT2W6n0KJ66zfCaeDM912mQ6SttscAwFoWDmdHlegiVqrlIG2ABxOvxxz
L3dM3iSmlmQlzv9bThjo+nI4KFYh6m5wrZmAo5r/4q9CIJc21HVnTqkGOWJIZz6J
73lePJVSq5gYqaoGw3swFEA/MDkOx7baWKSoLQIDAQABAoIBAQCNBeolNp+JWJ76
gQ4fwLsknyXSV6sxYyhkDW4PEwwcTU06uqce0AAzXVffxne0fMe48x47+zqBgPbb
4huM+Pu8B9nfojUMr5TaYtl9Zbgpk3F8H7dT7LKOa6XrxvZTZrADSRc30+Z26zPN
e9zTaf42Gvt0/l0Zs1BHwbaOXqO+XuwJ3/F9Sf3PQYWXD3EOWjpHDP/X/1vAs6lV
SLkm6J/9KKE1m6I6LTYjIXuYt4SXybW6N2TSy54hhQtYcDUnIU2hR/PHVWKrGA0J
kELgrtTNTdbML27O5gFWU4PLUEYTZ9fN11D6qUZKxLcPOiPPHXkiILMRCCnG5DYI
ksBAU/YlAoGBAPxZO9VO18TYc8THV1nLKcvT2+1oSs1UcA2wNQMU55t910ZYinRa
MRwUhMOf8Mv5wOeiZaRICQB1PnVWtDVmGECgPpK6jUxqAwn8rgJcnoafLGL5YKMY
RVafTe6N5LXgCaOcJrk21wxs6v7ninEbUxxc575urOvZMBkymDw91dwbAoGBAPwa
YRhKhrzFKZzdK0RadVjnxKvolUllpoqqg3XuvmeAJHAOAnaOgVWq68NAcp5FZJv0
2D2Up7TX8pjf9MofP1SJbcraKBpK4NzfNkA0dSdEi+FhVofAJ9umB2o5LW1n7sab
UIrjsdzSJK/9Zb9yTTHPyibYzNEgaJV1HsbxfEFXAoGAYO2RmvRm0phll18OQVJV
IpKk9kLKAKZ/R/K32hAsikBC8SVPQTPniyaifFWx81diblalff2hX4ipTf7Yx24I
wMIMZuW7Im/R7QMef4+94G3Bad7p7JuE/qnAEHJ2OBnu+eYfxaK35XDsrq6XMazS
NqHE7hOq3giVfgg+C12hCKMCgYEAtu9dbYcG5owbehxzfRI2/OCRsjz/t1bv1seM
xVMND4XI6xb/apBWAZgZpIFrqrWoIBM3ptfsKipZe91ngBPUnL9s0Dolx452RVAj
yctHB8uRxWYgqDkjsxtzXf1HnZBBkBS8CUzYj+hdfuddoeKLaY3invXLCiV+PpXS
U4KAK9kCgYEAtSv0m5+Fg74BbAiFB6kCh11FYkW94YI6B/E2D/uVTD5dJhyEUFgZ
cWsudXjMki8734WSpMBqBp/J8wG3C9ZS6IpQD+U7UXA+roB7Qr+j4TqtWfM+87Rh
maOpG56uAyR0w5Z9BhwzA3VakibVk9KwDgZ29WtKFzuATLFnOtCS46E=
-----END RSA PRIVATE KEY-----
EOF
chmod 600 ${VIRL_PKEY}
#
# Pick a random host from the array of VIRL servers, and attempt
# to reach it and verify it's status.
#
# The server must be reachable, and have a "status" file with
# the content "PRODUCTION", to be selected.
#
# If the server is not reachable, or does not have the correct
# status, remove it from the array and start again.
#
# Abort if there are no more servers left in the array.
#
while [[ ! "$VIRL_SERVER" ]]
do
num_hosts=${#VIRL_SERVERS[@]}
if [ $num_hosts == 0 ]
then
echo "No more VIRL candidate hosts available, failing."
exit 127
fi
element=$[ $RANDOM % $num_hosts ]
virl_server_candidate=${VIRL_SERVERS[$element]}
virl_server_status=$(ssh ${SSH_OPTIONS} ${VIRL_USERNAME}@${virl_server_candidate} cat $VIRL_SERVER_STATUS_FILE 2>&1)
echo VIRL HOST $virl_server_candidate status is \"$virl_server_status\"
if [ "$virl_server_status" == "$VIRL_SERVER_EXPECTED_STATUS" ]
then
# Candidate is in good status. Select this server.
VIRL_SERVER="$virl_server_candidate"
else
# Candidate is in bad status. Remove from array.
VIRL_SERVERS=("${VIRL_SERVERS[@]:0:$element}" "${VIRL_SERVERS[@]:$[$element+1]}")
fi
done
SCRIPT_DIR="$( cd "$( dirname "${BASH_SOURCE[0]}" )" && pwd )"
# Download VPP and HC packages from the current branch
echo Downloading packages...
bash ${SCRIPT_DIR}/resources/tools/scripts/download_hc_pkgs.sh ${STREAM} ${OS}
if [ "${OS}" == "centos7" ]; then
VPP_PKGS=(*.rpm)
else
VPP_PKGS=(*.deb)
fi
echo ${VPP_PKGS[@]}
VIRL_DIR_LOC="/tmp"
VPP_PKGS_FULL=(${VPP_PKGS[@]})
# Prepend directory location at remote host to package file list
for index in "${!VPP_PKGS_FULL[@]}"; do
VPP_PKGS_FULL[${index}]=${VIRL_DIR_LOC}/${VPP_PKGS_FULL[${index}]}
done
echo "Updated file names: " ${VPP_PKGS_FULL[@]}
cat ${VIRL_PKEY}
# Copy the files to VIRL hosts
DONE=""
for index in "${!VIRL_SERVER[@]}"; do
# Do not copy files in case they have already been copied to the VIRL host
[[ "${DONE[@]}" =~ "${VIRL_SERVER[${index}]}" ]] && copy=0 || copy=1
if [ "${copy}" -eq "0" ]; then
echo "files have already been copied to the VIRL host ${VIRL_SERVER[${index}]}"
else
if [ "${OS}" == "centos7" ]; then
scp ${SSH_OPTIONS} *.rpm \
${VIRL_USERNAME}@${VIRL_SERVER[${index}]}:${VIRL_DIR_LOC}/
else
scp ${SSH_OPTIONS} *.deb \
${VIRL_USERNAME}@${VIRL_SERVER[${index}]}:${VIRL_DIR_LOC}/
fi
result=$?
if [ "${result}" -ne "0" ]; then
echo "Failed to copy files to VIRL host ${VIRL_SERVER[${index}]}"
echo ${result}
exit
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/*
* decap.c: vxlan tunnel decap packet processing
*
* Copyright (c) 2013 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/pg/pg.h>
#include <vnet/vxlan/vxlan.h>
vlib_node_registration_t vxlan4_input_node;
vlib_node_registration_t vxlan6_input_node;
typedef struct {
u32 next_index;
u32 tunnel_index;
u32 error;
u32 vni;
} vxlan_rx_trace_t;
static u8 * format_vxlan_rx_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_rx_trace_t * t = va_arg (*args, vxlan_rx_trace_t *);
if (t->tunnel_index != ~0)
{
s = format (s, "VXLAN decap from vxlan_tunnel%d vni %d next %d error %d",
t->tunnel_index, t->vni, t->next_index, t->error);
}
else
{
s = format (s, "VXLAN decap error - tunnel for vni %d does not exist",
t->vni);
}
return s;
}
always_inline u32
validate_vxlan_fib (vlib_buffer_t *b, vxlan_tunnel_t *t, u32 is_ip4)
{
u32 fib_index, sw_if_index;
sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
if (is_ip4)
fib_index = (vnet_buffer (b)->sw_if_index[VLIB_TX] == (u32) ~ 0) ?
vec_elt (ip4_main.fib_index_by_sw_if_index, sw_if_index) :
vnet_buffer (b)->sw_if_index[VLIB_TX];
else
fib_index = (vnet_buffer (b)->sw_if_index[VLIB_TX] == (u32) ~ 0) ?
vec_elt (ip6_main.fib_index_by_sw_if_index, sw_if_index) :
vnet_buffer (b)->sw_if_index[VLIB_TX];
return (fib_index == t->encap_fib_index);
}
always_inline uword
vxlan_input (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame,
u32 is_ip4)
{
u32 n_left_from, next_index, * from, * to_next;
vxlan_main_t * vxm = &vxlan_main;
vnet_main_t * vnm = vxm->vnet_main;
vnet_interface_main_t * im = &vnm->interface_main;
u32 last_tunnel_index = ~0;
vxlan4_tunnel_key_t last_key4;
vxlan6_tunnel_key_t last_key6;
u32 pkts_decapsulated = 0;
u32 thread_index = vlib_get_thread_index();
u32 stats_sw_if_index, stats_n_packets, stats_n_bytes;
if (is_ip4)
last_key4.as_u64 = ~0;
else
memset (&last_key6, 0xff, sizeof (last_key6));
from = vlib_frame_vector_args (from_frame);
n_left_from = from_frame->n_vectors;
next_index = node->cached_next_index;
stats_sw_if_index = node->runtime_data[0];
stats_n_packets = stats_n_bytes = 0;
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;
ip4_header_t * ip4_0, * ip4_1;
ip6_header_t * ip6_0, * ip6_1;
vxlan_header_t * vxlan0, * vxlan1;
uword * p0, * p1;
u32 tunnel_index0, tunnel_index1;
vxlan_tunnel_t * t0, * t1, * mt0 = NULL, * mt1 = NULL;
vxlan4_tunnel_key_t key4_0, key4_1;
vxlan6_tunnel_key_t key6_0, key6_1;
u32 error0, error1;
u32 sw_if_index0, sw_if_index1, len0, len1;
/* 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);
/* udp leaves current_data pointing at the vxlan header */
vxlan0 = vlib_buffer_get_current (b0);
vxlan1 = vlib_buffer_get_current (b1);
if (is_ip4) {
vlib_buffer_advance
(b0, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t)));
vlib_buffer_advance
(b1, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t)));
ip4_0 = vlib_buffer_get_current (b0);
ip4_1 = vlib_buffer_get_current (b1);
} else {
vlib_buffer_advance
(b0, -(word)(sizeof(udp_header_t)+sizeof(ip6_header_t)));
vlib_buffer_advance
(b1, -(word)(sizeof(udp_header_t)+sizeof(ip6_header_t)));
ip6_0 = vlib_buffer_get_current (b0);
ip6_1 = vlib_buffer_get_current (b1);
}
/* pop (ip, udp, vxlan) */
if (is_ip4) {
vlib_buffer_advance
(b0, sizeof(*ip4_0)+sizeof(udp_header_t)+sizeof(*vxlan0));
vlib_buffer_advance
(b1, sizeof(*ip4_1)+sizeof(udp_header_t)+sizeof(*vxlan1));
} else {
vlib_buffer_advance
(b0, sizeof(*ip6_0)+sizeof(udp_header_t)+sizeof(*vxlan0));
vlib_buffer_advance
(b1, sizeof(*ip6_1)+sizeof(udp_header_t)+sizeof(*vxlan1));
}
tunnel_index0 = ~0;
error0 = 0;
tunnel_index1 = ~0;
error1 = 0;
if (PREDICT_FALSE (vxlan0->flags != VXLAN_FLAGS_I))
{
error0 = VXLAN_ERROR_BAD_FLAGS;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace0;
}
if (is_ip4) {
key4_0.src = ip4_0->src_address.as_u32;
key4_0.vni = vxlan0->vni_reserved;
/* Make sure VXLAN tunnel exist according to packet SIP and VNI */
if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
{
p0 = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
if (PREDICT_FALSE (p0 == NULL))
{
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace0;
}
last_key4.as_u64 = key4_0.as_u64;
tunnel_index0 = last_tunnel_index = p0[0];
}
else
tunnel_index0 = last_tunnel_index;
t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
/* Validate VXLAN tunnel encap-fib index agaist packet */
if (PREDICT_FALSE (validate_vxlan_fib (b0, t0, is_ip4) == 0))
{
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace0;
}
/* Validate VXLAN tunnel SIP against packet DIP */
if (PREDICT_TRUE (ip4_0->dst_address.as_u32 == t0->src.ip4.as_u32))
goto next0; /* valid packet */
if (PREDICT_FALSE (ip4_address_is_multicast (&ip4_0->dst_address)))
{
key4_0.src = ip4_0->dst_address.as_u32;
key4_0.vni = vxlan0->vni_reserved;
/* Make sure mcast VXLAN tunnel exist by packet DIP and VNI */
p0 = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
if (PREDICT_TRUE (p0 != NULL))
{
mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
goto next0; /* valid packet */
}
}
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace0;
} else /* !is_ip4 */ {
key6_0.src.as_u64[0] = ip6_0->src_address.as_u64[0];
key6_0.src.as_u64[1] = ip6_0->src_address.as_u64[1];
key6_0.vni = vxlan0->vni_reserved;
/* Make sure VXLAN tunnel exist according to packet SIP and VNI */
if (PREDICT_FALSE (memcmp(&key6_0, &last_key6, sizeof(last_key6)) != 0))
{
p0 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
if (PREDICT_FALSE (p0 == NULL))
{
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace0;
}
clib_memcpy (&last_key6, &key6_0, sizeof(key6_0));
tunnel_index0 = last_tunnel_index = p0[0];
}
else
tunnel_index0 = last_tunnel_index;
t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
/* Validate VXLAN tunnel encap-fib index agaist packet */
if (PREDICT_FALSE (validate_vxlan_fib (b0, t0, is_ip4) == 0))
{
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace0;
}
/* Validate VXLAN tunnel SIP against packet DIP */
if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address,
&t0->src.ip6)))
goto next0; /* valid packet */
if (PREDICT_FALSE (ip6_address_is_multicast (&ip6_0->dst_address)))
{
key6_0.src.as_u64[0] = ip6_0->dst_address.as_u64[0];
key6_0.src.as_u64[1] = ip6_0->dst_address.as_u64[1];
key6_0.vni = vxlan0->vni_reserved;
p0 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
if (PREDICT_TRUE (p0 != NULL))
{
mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
goto next0; /* valid packet */
}
}
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace0;
}
next0:
next0 = t0->decap_next_index;
sw_if_index0 = t0->sw_if_index;
len0 = vlib_buffer_length_in_chain (vm, b0);
/* Required to make the l2 tag push / pop code work on l2 subifs */
if (PREDICT_TRUE(next0 == VXLAN_INPUT_NEXT_L2_INPUT))
vnet_update_l2_len (b0);
/* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
vnet_buffer(b0)->sw_if_index[VLIB_RX] = sw_if_index0;
sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;
pkts_decapsulated ++;
stats_n_packets += 1;
stats_n_bytes += len0;
/* Batch stats increment on the same vxlan tunnel so counter
is not incremented per packet */
if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
{
stats_n_packets -= 1;
stats_n_bytes -= len0;
if (stats_n_packets)
vlib_increment_combined_counter
(im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
thread_index, stats_sw_if_index,
stats_n_packets, stats_n_bytes);
stats_n_packets = 1;
stats_n_bytes = len0;
stats_sw_if_index = sw_if_index0;
}
trace0:
b0->error = error0 ? node->errors[error0] : 0;
if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
{
vxlan_rx_trace_t *tr
= vlib_add_trace (vm, node, b0, sizeof (*tr));
tr->next_index = next0;
tr->error = error0;
tr->tunnel_index = tunnel_index0;
tr->vni = vnet_get_vni (vxlan0);
}
if (PREDICT_FALSE (vxlan1->flags != VXLAN_FLAGS_I))
{
error1 = VXLAN_ERROR_BAD_FLAGS;
next1 = VXLAN_INPUT_NEXT_DROP;
goto trace1;
}
if (is_ip4) {
key4_1.src = ip4_1->src_address.as_u32;
key4_1.vni = vxlan1->vni_reserved;
/* Make sure unicast VXLAN tunnel exist by packet SIP and VNI */
if (PREDICT_FALSE (key4_1.as_u64 != last_key4.as_u64))
{
p1 = hash_get (vxm->vxlan4_tunnel_by_key, key4_1.as_u64);
if (PREDICT_FALSE (p1 == NULL))
{
error1 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next1 = VXLAN_INPUT_NEXT_DROP;
goto trace1;
}
last_key4.as_u64 = key4_1.as_u64;
tunnel_index1 = last_tunnel_index = p1[0];
}
else
tunnel_index1 = last_tunnel_index;
t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
/* Validate VXLAN tunnel encap-fib index agaist packet */
if (PREDICT_FALSE (validate_vxlan_fib (b1, t1, is_ip4) == 0))
{
error1 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next1 = VXLAN_INPUT_NEXT_DROP;
goto trace1;
}
/* Validate VXLAN tunnel SIP against packet DIP */
if (PREDICT_TRUE (ip4_1->dst_address.as_u32 == t1->src.ip4.as_u32))
goto next1; /* valid packet */
if (PREDICT_FALSE (ip4_address_is_multicast (&ip4_1->dst_address)))
{
key4_1.src = ip4_1->dst_address.as_u32;
key4_1.vni = vxlan1->vni_reserved;
/* Make sure mcast VXLAN tunnel exist by packet DIP and VNI */
p1 = hash_get (vxm->vxlan4_tunnel_by_key, key4_1.as_u64);
if (PREDICT_TRUE (p1 != NULL))
{
mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
goto next1; /* valid packet */
}
}
error1 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next1 = VXLAN_INPUT_NEXT_DROP;
goto trace1;
} else /* !is_ip4 */ {
key6_1.src.as_u64[0] = ip6_1->src_address.as_u64[0];
key6_1.src.as_u64[1] = ip6_1->src_address.as_u64[1];
key6_1.vni = vxlan1->vni_reserved;
/* Make sure VXLAN tunnel exist according to packet SIP and VNI */
if (PREDICT_FALSE (memcmp(&key6_1, &last_key6, sizeof(last_key6)) != 0))
{
p1 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_1);
if (PREDICT_FALSE (p1 == NULL))
{
error1 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next1 = VXLAN_INPUT_NEXT_DROP;
goto trace1;
}
clib_memcpy (&last_key6, &key6_1, sizeof(key6_1));
tunnel_index1 = last_tunnel_index = p1[0];
}
else
tunnel_index1 = last_tunnel_index;
t1 = pool_elt_at_index (vxm->tunnels, tunnel_index1);
/* Validate VXLAN tunnel encap-fib index agaist packet */
if (PREDICT_FALSE (validate_vxlan_fib (b1, t1, is_ip4) == 0))
{
error1 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next1 = VXLAN_INPUT_NEXT_DROP;
goto trace1;
}
/* Validate VXLAN tunnel SIP against packet DIP */
if (PREDICT_TRUE (ip6_address_is_equal (&ip6_1->dst_address,
&t1->src.ip6)))
goto next1; /* valid packet */
if (PREDICT_FALSE (ip6_address_is_multicast (&ip6_1->dst_address)))
{
key6_1.src.as_u64[0] = ip6_1->dst_address.as_u64[0];
key6_1.src.as_u64[1] = ip6_1->dst_address.as_u64[1];
key6_1.vni = vxlan1->vni_reserved;
p1 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_1);
if (PREDICT_TRUE (p1 != NULL))
{
mt1 = pool_elt_at_index (vxm->tunnels, p1[0]);
goto next1; /* valid packet */
}
}
error1 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next1 = VXLAN_INPUT_NEXT_DROP;
goto trace1;
}
next1:
next1 = t1->decap_next_index;
sw_if_index1 = t1->sw_if_index;
len1 = vlib_buffer_length_in_chain (vm, b1);
/* Required to make the l2 tag push / pop code work on l2 subifs */
if (PREDICT_TRUE(next1 == VXLAN_INPUT_NEXT_L2_INPUT))
vnet_update_l2_len (b1);
/* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
vnet_buffer(b1)->sw_if_index[VLIB_RX] = sw_if_index1;
sw_if_index1 = (mt1) ? mt1->sw_if_index : sw_if_index1;
pkts_decapsulated ++;
stats_n_packets += 1;
stats_n_bytes += len1;
/* Batch stats increment on the same vxlan tunnel so counter
is not incremented per packet */
if (PREDICT_FALSE (sw_if_index1 != stats_sw_if_index))
{
stats_n_packets -= 1;
stats_n_bytes -= len1;
if (stats_n_packets)
vlib_increment_combined_counter
(im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
thread_index, stats_sw_if_index,
stats_n_packets, stats_n_bytes);
stats_n_packets = 1;
stats_n_bytes = len1;
stats_sw_if_index = sw_if_index1;
}
trace1:
b1->error = error1 ? node->errors[error1] : 0;
if (PREDICT_FALSE(b1->flags & VLIB_BUFFER_IS_TRACED))
{
vxlan_rx_trace_t *tr
= vlib_add_trace (vm, node, b1, sizeof (*tr));
tr->next_index = next1;
tr->error = error1;
tr->tunnel_index = tunnel_index1;
tr->vni = vnet_get_vni (vxlan1);
}
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;
ip4_header_t * ip4_0;
ip6_header_t * ip6_0;
vxlan_header_t * vxlan0;
uword * p0;
u32 tunnel_index0;
vxlan_tunnel_t * t0, * mt0 = NULL;
vxlan4_tunnel_key_t key4_0;
vxlan6_tunnel_key_t key6_0;
u32 error0;
u32 sw_if_index0, len0;
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);
/* udp leaves current_data pointing at the vxlan header */
vxlan0 = vlib_buffer_get_current (b0);
if (is_ip4) {
vlib_buffer_advance
(b0, -(word)(sizeof(udp_header_t)+sizeof(ip4_header_t)));
ip4_0 = vlib_buffer_get_current (b0);
} else {
vlib_buffer_advance
(b0, -(word)(sizeof(udp_header_t)+sizeof(ip6_header_t)));
ip6_0 = vlib_buffer_get_current (b0);
}
/* pop (ip, udp, vxlan) */
if (is_ip4) {
vlib_buffer_advance
(b0, sizeof(*ip4_0)+sizeof(udp_header_t)+sizeof(*vxlan0));
} else {
vlib_buffer_advance
(b0, sizeof(*ip6_0)+sizeof(udp_header_t)+sizeof(*vxlan0));
}
tunnel_index0 = ~0;
error0 = 0;
if (PREDICT_FALSE (vxlan0->flags != VXLAN_FLAGS_I))
{
error0 = VXLAN_ERROR_BAD_FLAGS;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace00;
}
if (is_ip4) {
key4_0.src = ip4_0->src_address.as_u32;
key4_0.vni = vxlan0->vni_reserved;
/* Make sure unicast VXLAN tunnel exist by packet SIP and VNI */
if (PREDICT_FALSE (key4_0.as_u64 != last_key4.as_u64))
{
p0 = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
if (PREDICT_FALSE (p0 == NULL))
{
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace00;
}
last_key4.as_u64 = key4_0.as_u64;
tunnel_index0 = last_tunnel_index = p0[0];
}
else
tunnel_index0 = last_tunnel_index;
t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
/* Validate VXLAN tunnel encap-fib index agaist packet */
if (PREDICT_FALSE (validate_vxlan_fib (b0, t0, is_ip4) == 0))
{
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace00;
}
/* Validate VXLAN tunnel SIP against packet DIP */
if (PREDICT_TRUE (ip4_0->dst_address.as_u32 == t0->src.ip4.as_u32))
goto next00; /* valid packet */
if (PREDICT_FALSE (ip4_address_is_multicast (&ip4_0->dst_address)))
{
key4_0.src = ip4_0->dst_address.as_u32;
key4_0.vni = vxlan0->vni_reserved;
/* Make sure mcast VXLAN tunnel exist by packet DIP and VNI */
p0 = hash_get (vxm->vxlan4_tunnel_by_key, key4_0.as_u64);
if (PREDICT_TRUE (p0 != NULL))
{
mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
goto next00; /* valid packet */
}
}
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace00;
} else /* !is_ip4 */ {
key6_0.src.as_u64[0] = ip6_0->src_address.as_u64[0];
key6_0.src.as_u64[1] = ip6_0->src_address.as_u64[1];
key6_0.vni = vxlan0->vni_reserved;
/* Make sure VXLAN tunnel exist according to packet SIP and VNI */
if (PREDICT_FALSE (memcmp(&key6_0, &last_key6, sizeof(last_key6)) != 0))
{
p0 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
if (PREDICT_FALSE (p0 == NULL))
{
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace00;
}
clib_memcpy (&last_key6, &key6_0, sizeof(key6_0));
tunnel_index0 = last_tunnel_index = p0[0];
}
else
tunnel_index0 = last_tunnel_index;
t0 = pool_elt_at_index (vxm->tunnels, tunnel_index0);
/* Validate VXLAN tunnel encap-fib index agaist packet */
if (PREDICT_FALSE (validate_vxlan_fib (b0, t0, is_ip4) == 0))
{
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace00;
}
/* Validate VXLAN tunnel SIP against packet DIP */
if (PREDICT_TRUE (ip6_address_is_equal (&ip6_0->dst_address,
&t0->src.ip6)))
goto next00; /* valid packet */
if (PREDICT_FALSE (ip6_address_is_multicast (&ip6_0->dst_address)))
{
key6_0.src.as_u64[0] = ip6_0->dst_address.as_u64[0];
key6_0.src.as_u64[1] = ip6_0->dst_address.as_u64[1];
key6_0.vni = vxlan0->vni_reserved;
p0 = hash_get_mem (vxm->vxlan6_tunnel_by_key, &key6_0);
if (PREDICT_TRUE (p0 != NULL))
{
mt0 = pool_elt_at_index (vxm->tunnels, p0[0]);
goto next00; /* valid packet */
}
}
error0 = VXLAN_ERROR_NO_SUCH_TUNNEL;
next0 = VXLAN_INPUT_NEXT_DROP;
goto trace00;
}
next00:
next0 = t0->decap_next_index;
sw_if_index0 = t0->sw_if_index;
len0 = vlib_buffer_length_in_chain (vm, b0);
/* Required to make the l2 tag push / pop code work on l2 subifs */
if (PREDICT_TRUE(next0 == VXLAN_INPUT_NEXT_L2_INPUT))
vnet_update_l2_len (b0);
/* Set packet input sw_if_index to unicast VXLAN tunnel for learning */
vnet_buffer(b0)->sw_if_index[VLIB_RX] = sw_if_index0;
sw_if_index0 = (mt0) ? mt0->sw_if_index : sw_if_index0;
pkts_decapsulated ++;
stats_n_packets += 1;
stats_n_bytes += len0;
/* Batch stats increment on the same vxlan tunnel so counter
is not incremented per packet */
if (PREDICT_FALSE (sw_if_index0 != stats_sw_if_index))
{
stats_n_packets -= 1;
stats_n_bytes -= len0;
if (stats_n_packets)
vlib_increment_combined_counter
(im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
thread_index, stats_sw_if_index,
stats_n_packets, stats_n_bytes);
stats_n_packets = 1;
stats_n_bytes = len0;
stats_sw_if_index = sw_if_index0;
}
trace00:
b0->error = error0 ? node->errors[error0] : 0;
if (PREDICT_FALSE(b0->flags & VLIB_BUFFER_IS_TRACED))
{
vxlan_rx_trace_t *tr
= vlib_add_trace (vm, node, b0, sizeof (*tr));
tr->next_index = next0;
tr->error = error0;
tr->tunnel_index = tunnel_index0;
tr->vni = vnet_get_vni (vxlan0);
}
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);
}
/* Do we still need this now that tunnel tx stats is kept? */
vlib_node_increment_counter (vm, is_ip4?
vxlan4_input_node.index:vxlan6_input_node.index,
VXLAN_ERROR_DECAPSULATED,
pkts_decapsulated);
/* Increment any remaining batch stats */
if (stats_n_packets)
{
vlib_increment_combined_counter
(im->combined_sw_if_counters + VNET_INTERFACE_COUNTER_RX,
thread_index, stats_sw_if_index, stats_n_packets, stats_n_bytes);
node->runtime_data[0] = stats_sw_if_index;
}
return from_frame->n_vectors;
}
static uword
vxlan4_input (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
return vxlan_input(vm, node, from_frame, /* is_ip4 */ 1);
}
static uword
vxlan6_input (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * from_frame)
{
return vxlan_input(vm, node, from_frame, /* is_ip4 */ 0);
}
static char * vxlan_error_strings[] = {
#define vxlan_error(n,s) s,
#include <vnet/vxlan/vxlan_error.def>
#undef vxlan_error
#undef _
};
VLIB_REGISTER_NODE (vxlan4_input_node) = {
.function = vxlan4_input,
.name = "vxlan4-input",
/* Takes a vector of packets. */
.vector_size = sizeof (u32),
.n_errors = VXLAN_N_ERROR,
.error_strings = vxlan_error_strings,
.n_next_nodes = VXLAN_INPUT_N_NEXT,
.next_nodes = {
#define _(s,n) [VXLAN_INPUT_NEXT_##s] = n,
foreach_vxlan_input_next
#undef _
},
//temp .format_buffer = format_vxlan_header,
.format_trace = format_vxlan_rx_trace,
// $$$$ .unformat_buffer = unformat_vxlan_header,
};
VLIB_NODE_FUNCTION_MULTIARCH (vxlan4_input_node, vxlan4_input)
VLIB_REGISTER_NODE (vxlan6_input_node) = {
.function = vxlan6_input,
.name = "vxlan6-input",
/* Takes a vector of packets. */
.vector_size = sizeof (u32),
.n_errors = VXLAN_N_ERROR,
.error_strings = vxlan_error_strings,
.n_next_nodes = VXLAN_INPUT_N_NEXT,
.next_nodes = {
#define _(s,n) [VXLAN_INPUT_NEXT_##s] = n,
foreach_vxlan_input_next
#undef _
},
//temp .format_buffer = format_vxlan_header,
.format_trace = format_vxlan_rx_trace,
// $$$$ .unformat_buffer = unformat_vxlan_header,
};
VLIB_NODE_FUNCTION_MULTIARCH (vxlan6_input_node, vxlan6_input)
typedef enum {
IP_VXLAN_BYPASS_NEXT_DROP,
IP_VXLAN_BYPASS_NEXT_VXLAN,
IP_VXLAN_BYPASS_N_NEXT,
} ip_vxan_bypass_next_t;
always_inline uword
ip_vxlan_bypass_inline (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame,
u32 is_ip4)
{
vxlan_main_t * vxm = &vxlan_main;
u32 * from, * to_next, n_left_from, n_left_to_next, next_index;
vlib_node_runtime_t * error_node = vlib_node_get_runtime (vm, ip4_input_node.index);
ip4_address_t addr4; /* last IPv4 address matching a local VTEP address */
ip6_address_t addr6; /* last IPv6 address matching a local VTEP address */
from = vlib_frame_vector_args (frame);
n_left_from = frame->n_vectors;
next_index = node->cached_next_index;
if (node->flags & VLIB_NODE_FLAG_TRACE)
ip4_forward_next_trace (vm, node, frame, VLIB_TX);
if (is_ip4) addr4.data_u32 = ~0;
else ip6_address_set_zero (&addr6);
while (n_left_from > 0)
{
vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
while (n_left_from >= 4 && n_left_to_next >= 2)
{
vlib_buffer_t * b0, * b1;
ip4_header_t * ip40, * ip41;
ip6_header_t * ip60, * ip61;
udp_header_t * udp0, * udp1;
u32 bi0, ip_len0, udp_len0, flags0, next0;
u32 bi1, ip_len1, udp_len1, flags1, next1;
i32 len_diff0, len_diff1;
u8 error0, good_udp0, proto0;
u8 error1, good_udp1, proto1;
/* 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 = to_next[0] = from[0];
bi1 = to_next[1] = from[1];
from += 2;
n_left_from -= 2;
to_next += 2;
n_left_to_next -= 2;
b0 = vlib_get_buffer (vm, bi0);
b1 = vlib_get_buffer (vm, bi1);
if (is_ip4)
{
ip40 = vlib_buffer_get_current (b0);
ip41 = vlib_buffer_get_current (b1);
}
else
{
ip60 = vlib_buffer_get_current (b0);
ip61 = vlib_buffer_get_current (b1);
}
/* Setup packet for next IP feature */
vnet_feature_next(vnet_buffer(b0)->sw_if_index[VLIB_RX], &next0, b0);
vnet_feature_next(vnet_buffer(b1)->sw_if_index[VLIB_RX], &next1, b1);
if (is_ip4)
{
/* Treat IP frag packets as "experimental" protocol for now
until support of IP frag reassembly is implemented */
proto0 = ip4_is_fragment(ip40) ? 0xfe : ip40->protocol;
proto1 = ip4_is_fragment(ip41) ? 0xfe : ip41->protocol;
}
else
{
proto0 = ip60->protocol;
proto1 = ip61->protocol;
}
/* Process packet 0 */
if (proto0 != IP_PROTOCOL_UDP)
goto exit0; /* not UDP packet */
if (is_ip4)
udp0 = ip4_next_header (ip40);
else
udp0 = ip6_next_header (ip60);
if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan))
goto exit0; /* not VXLAN packet */
/* Validate DIP against VTEPs*/
if (is_ip4)
{
if (addr4.as_u32 != ip40->dst_address.as_u32)
{
if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
goto exit0; /* no local VTEP for VXLAN packet */
addr4 = ip40->dst_address;
}
}
else
{
if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
{
if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
goto exit0; /* no local VTEP for VXLAN packet */
addr6 = ip60->dst_address;
}
}
flags0 = b0->flags;
good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
/* Don't verify UDP checksum for packets with explicit zero checksum. */
good_udp0 |= udp0->checksum == 0;
/* Verify UDP length */
if (is_ip4)
ip_len0 = clib_net_to_host_u16 (ip40->length);
else
ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
udp_len0 = clib_net_to_host_u16 (udp0->length);
len_diff0 = ip_len0 - udp_len0;
/* Verify UDP checksum */
if (PREDICT_FALSE (!good_udp0))
{
if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
{
if (is_ip4)
flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
else
flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
good_udp0 =
(flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
}
}
if (is_ip4)
{
error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
}
else
{
error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
}
next0 = error0 ?
IP_VXLAN_BYPASS_NEXT_DROP : IP_VXLAN_BYPASS_NEXT_VXLAN;
b0->error = error0 ? error_node->errors[error0] : 0;
/* vxlan-input node expect current at VXLAN header */
if (is_ip4)
vlib_buffer_advance (b0, sizeof(ip4_header_t)+sizeof(udp_header_t));
else
vlib_buffer_advance (b0, sizeof(ip6_header_t)+sizeof(udp_header_t));
exit0:
/* Process packet 1 */
if (proto1 != IP_PROTOCOL_UDP)
goto exit1; /* not UDP packet */
if (is_ip4)
udp1 = ip4_next_header (ip41);
else
udp1 = ip6_next_header (ip61);
if (udp1->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan))
goto exit1; /* not VXLAN packet */
/* Validate DIP against VTEPs*/
if (is_ip4)
{
if (addr4.as_u32 != ip41->dst_address.as_u32)
{
if (!hash_get (vxm->vtep4, ip41->dst_address.as_u32))
goto exit1; /* no local VTEP for VXLAN packet */
addr4 = ip41->dst_address;
}
}
else
{
if (!ip6_address_is_equal (&addr6, &ip61->dst_address))
{
if (!hash_get_mem (vxm->vtep6, &ip61->dst_address))
goto exit1; /* no local VTEP for VXLAN packet */
addr6 = ip61->dst_address;
}
}
flags1 = b1->flags;
good_udp1 = (flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
/* Don't verify UDP checksum for packets with explicit zero checksum. */
good_udp1 |= udp1->checksum == 0;
/* Verify UDP length */
if (is_ip4)
ip_len1 = clib_net_to_host_u16 (ip41->length);
else
ip_len1 = clib_net_to_host_u16 (ip61->payload_length);
udp_len1 = clib_net_to_host_u16 (udp1->length);
len_diff1 = ip_len1 - udp_len1;
/* Verify UDP checksum */
if (PREDICT_FALSE (!good_udp1))
{
if ((flags1 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
{
if (is_ip4)
flags1 = ip4_tcp_udp_validate_checksum (vm, b1);
else
flags1 = ip6_tcp_udp_icmp_validate_checksum (vm, b1);
good_udp1 =
(flags1 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
}
}
if (is_ip4)
{
error1 = good_udp1 ? 0 : IP4_ERROR_UDP_CHECKSUM;
error1 = (len_diff1 >= 0) ? error1 : IP4_ERROR_UDP_LENGTH;
}
else
{
error1 = good_udp1 ? 0 : IP6_ERROR_UDP_CHECKSUM;
error1 = (len_diff1 >= 0) ? error1 : IP6_ERROR_UDP_LENGTH;
}
next1 = error1 ?
IP_VXLAN_BYPASS_NEXT_DROP : IP_VXLAN_BYPASS_NEXT_VXLAN;
b1->error = error1 ? error_node->errors[error1] : 0;
/* vxlan-input node expect current at VXLAN header */
if (is_ip4)
vlib_buffer_advance (b1, sizeof(ip4_header_t)+sizeof(udp_header_t));
else
vlib_buffer_advance (b1, sizeof(ip6_header_t)+sizeof(udp_header_t));
exit1:
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)
{
vlib_buffer_t * b0;
ip4_header_t * ip40;
ip6_header_t * ip60;
udp_header_t * udp0;
u32 bi0, ip_len0, udp_len0, flags0, next0;
i32 len_diff0;
u8 error0, good_udp0, proto0;
bi0 = to_next[0] = from[0];
from += 1;
n_left_from -= 1;
to_next += 1;
n_left_to_next -= 1;
b0 = vlib_get_buffer (vm, bi0);
if (is_ip4)
ip40 = vlib_buffer_get_current (b0);
else
ip60 = vlib_buffer_get_current (b0);
/* Setup packet for next IP feature */
vnet_feature_next(vnet_buffer(b0)->sw_if_index[VLIB_RX], &next0, b0);
if (is_ip4)
/* Treat IP4 frag packets as "experimental" protocol for now
until support of IP frag reassembly is implemented */
proto0 = ip4_is_fragment(ip40) ? 0xfe : ip40->protocol;
else
proto0 = ip60->protocol;
if (proto0 != IP_PROTOCOL_UDP)
goto exit; /* not UDP packet */
if (is_ip4)
udp0 = ip4_next_header (ip40);
else
udp0 = ip6_next_header (ip60);
if (udp0->dst_port != clib_host_to_net_u16 (UDP_DST_PORT_vxlan))
goto exit; /* not VXLAN packet */
/* Validate DIP against VTEPs*/
if (is_ip4)
{
if (addr4.as_u32 != ip40->dst_address.as_u32)
{
if (!hash_get (vxm->vtep4, ip40->dst_address.as_u32))
goto exit; /* no local VTEP for VXLAN packet */
addr4 = ip40->dst_address;
}
}
else
{
if (!ip6_address_is_equal (&addr6, &ip60->dst_address))
{
if (!hash_get_mem (vxm->vtep6, &ip60->dst_address))
goto exit; /* no local VTEP for VXLAN packet */
addr6 = ip60->dst_address;
}
}
flags0 = b0->flags;
good_udp0 = (flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
/* Don't verify UDP checksum for packets with explicit zero checksum. */
good_udp0 |= udp0->checksum == 0;
/* Verify UDP length */
if (is_ip4)
ip_len0 = clib_net_to_host_u16 (ip40->length);
else
ip_len0 = clib_net_to_host_u16 (ip60->payload_length);
udp_len0 = clib_net_to_host_u16 (udp0->length);
len_diff0 = ip_len0 - udp_len0;
/* Verify UDP checksum */
if (PREDICT_FALSE (!good_udp0))
{
if ((flags0 & VNET_BUFFER_F_L4_CHECKSUM_COMPUTED) == 0)
{
if (is_ip4)
flags0 = ip4_tcp_udp_validate_checksum (vm, b0);
else
flags0 = ip6_tcp_udp_icmp_validate_checksum (vm, b0);
good_udp0 =
(flags0 & VNET_BUFFER_F_L4_CHECKSUM_CORRECT) != 0;
}
}
if (is_ip4)
{
error0 = good_udp0 ? 0 : IP4_ERROR_UDP_CHECKSUM;
error0 = (len_diff0 >= 0) ? error0 : IP4_ERROR_UDP_LENGTH;
}
else
{
error0 = good_udp0 ? 0 : IP6_ERROR_UDP_CHECKSUM;
error0 = (len_diff0 >= 0) ? error0 : IP6_ERROR_UDP_LENGTH;
}
next0 = error0 ?
IP_VXLAN_BYPASS_NEXT_DROP : IP_VXLAN_BYPASS_NEXT_VXLAN;
b0->error = error0 ? error_node->errors[error0] : 0;
/* vxlan-input node expect current at VXLAN header */
if (is_ip4)
vlib_buffer_advance (b0, sizeof(ip4_header_t)+sizeof(udp_header_t));
else
vlib_buffer_advance (b0, sizeof(ip6_header_t)+sizeof(udp_header_t));
exit:
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;
}
static uword
ip4_vxlan_bypass (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
return ip_vxlan_bypass_inline (vm, node, frame, /* is_ip4 */ 1);
}
VLIB_REGISTER_NODE (ip4_vxlan_bypass_node) = {
.function = ip4_vxlan_bypass,
.name = "ip4-vxlan-bypass",
.vector_size = sizeof (u32),
.n_next_nodes = IP_VXLAN_BYPASS_N_NEXT,
.next_nodes = {
[IP_VXLAN_BYPASS_NEXT_DROP] = "error-drop",
[IP_VXLAN_BYPASS_NEXT_VXLAN] = "vxlan4-input",
},
.format_buffer = format_ip4_header,
.format_trace = format_ip4_forward_next_trace,
};
VLIB_NODE_FUNCTION_MULTIARCH (ip4_vxlan_bypass_node,ip4_vxlan_bypass)
/* Dummy init function to get us linked in. */
clib_error_t * ip4_vxlan_bypass_init (vlib_main_t * vm)
{ return 0; }
VLIB_INIT_FUNCTION (ip4_vxlan_bypass_init);
static uword
ip6_vxlan_bypass (vlib_main_t * vm,
vlib_node_runtime_t * node,
vlib_frame_t * frame)
{
return ip_vxlan_bypass_inline (vm, node, frame, /* is_ip4 */ 0);
}
VLIB_REGISTER_NODE (ip6_vxlan_bypass_node) = {
.function = ip6_vxlan_bypass,
.name = "ip6-vxlan-bypass",
.vector_size = sizeof (u32),
.n_next_nodes = IP_VXLAN_BYPASS_N_NEXT,
.next_nodes = {
[IP_VXLAN_BYPASS_NEXT_DROP] = "error-drop",
[IP_VXLAN_BYPASS_NEXT_VXLAN] = "vxlan6-input",
},
.format_buffer = format_ip6_header,
.format_trace = format_ip6_forward_next_trace,
};
VLIB_NODE_FUNCTION_MULTIARCH (ip6_vxlan_bypass_node,ip6_vxlan_bypass)
/* Dummy init function to get us linked in. */
clib_error_t * ip6_vxlan_bypass_init (vlib_main_t * vm)
{ return 0; }
VLIB_INIT_FUNCTION (ip6_vxlan_bypass_init);
