UbiquitousOS
/
OpenCloudOS-Kernel
mirror of https://gitee.com/OpenCloudOS/OpenCloudOS-Kernel.git
11
0
Fork 0
Code Issues Projects Releases Wiki Activity

selftests: forwarding: Add test cases for unresolved multicast routes 

Add IPv4 and IPv6 test cases for unresolved multicast routes, testing
that queued packets are forwarded after installing a matching (S, G)
route.

The test cases can be used to reproduce the bugs fixed in "ipmr: Always
call ip{,6}_mr_forward() from RCU read-side critical section".

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Ido Schimmel 2022-09-14 10:53:39 +03:00 committed by Jakub Kicinski
parent b07a9b26e2
commit 2b5a8c8f59
1 changed files with 91 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

92
tools/testing/selftests/net/forwarding/router_multicast.sh
View File

@ -28,7 +28,7 @@
# +------------------+ +------------------+
#
ALL_TESTS="mcast_v4 mcast_v6 rpf_v4 rpf_v6"
ALL_TESTS="mcast_v4 mcast_v6 rpf_v4 rpf_v6 unres_v4 unres_v6"
NUM_NETIFS=6
source lib.sh
source tc_common.sh
@ -406,6 +406,96 @@ rpf_v6()
log_test "RPF IPv6"
}
unres_v4()
{
# Send a multicast packet not corresponding to an installed route,
# causing the kernel to queue the packet for resolution and emit an
# IGMPMSG_NOCACHE notification. smcrouted will react to this
# notification by consulting its (*, G) list and installing an (S, G)
# route, which will be used to forward the queued packet.
RET=0
tc filter add dev $h2 ingress protocol ip pref 1 handle 1 flower \
dst_ip 225.1.2.3 ip_proto udp dst_port 12345 action drop
tc filter add dev $h3 ingress protocol ip pref 1 handle 1 flower \
dst_ip 225.1.2.3 ip_proto udp dst_port 12345 action drop
# Forwarding should fail before installing a matching (*, G).
$MZ $h1 -c 1 -p 128 -t udp "ttl=10,sp=54321,dp=12345" \
-a 00:11:22:33:44:55 -b 01:00:5e:01:02:03 \
-A 198.51.100.2 -B 225.1.2.3 -q
tc_check_packets "dev $h2 ingress" 1 0
check_err $? "Multicast received on first host when should not"
tc_check_packets "dev $h3 ingress" 1 0
check_err $? "Multicast received on second host when should not"
# Create (*, G). Will not be installed in the kernel.
create_mcast_sg $rp1 0.0.0.0 225.1.2.3 $rp2 $rp3
$MZ $h1 -c 1 -p 128 -t udp "ttl=10,sp=54321,dp=12345" \
-a 00:11:22:33:44:55 -b 01:00:5e:01:02:03 \
-A 198.51.100.2 -B 225.1.2.3 -q
tc_check_packets "dev $h2 ingress" 1 1
check_err $? "Multicast not received on first host"
tc_check_packets "dev $h3 ingress" 1 1
check_err $? "Multicast not received on second host"
delete_mcast_sg $rp1 0.0.0.0 225.1.2.3 $rp2 $rp3
tc filter del dev $h3 ingress protocol ip pref 1 handle 1 flower
tc filter del dev $h2 ingress protocol ip pref 1 handle 1 flower
log_test "Unresolved queue IPv4"
}
unres_v6()
{
# Send a multicast packet not corresponding to an installed route,
# causing the kernel to queue the packet for resolution and emit an
# MRT6MSG_NOCACHE notification. smcrouted will react to this
# notification by consulting its (*, G) list and installing an (S, G)
# route, which will be used to forward the queued packet.
RET=0
tc filter add dev $h2 ingress protocol ipv6 pref 1 handle 1 flower \
dst_ip ff0e::3 ip_proto udp dst_port 12345 action drop
tc filter add dev $h3 ingress protocol ipv6 pref 1 handle 1 flower \
dst_ip ff0e::3 ip_proto udp dst_port 12345 action drop
# Forwarding should fail before installing a matching (*, G).
$MZ $h1 -6 -c 1 -p 128 -t udp "ttl=10,sp=54321,dp=12345" \
-a 00:11:22:33:44:55 -b 33:33:00:00:00:03 \
-A 2001:db8:1::2 -B ff0e::3 -q
tc_check_packets "dev $h2 ingress" 1 0
check_err $? "Multicast received on first host when should not"
tc_check_packets "dev $h3 ingress" 1 0
check_err $? "Multicast received on second host when should not"
# Create (*, G). Will not be installed in the kernel.
create_mcast_sg $rp1 :: ff0e::3 $rp2 $rp3
$MZ $h1 -6 -c 1 -p 128 -t udp "ttl=10,sp=54321,dp=12345" \
-a 00:11:22:33:44:55 -b 33:33:00:00:00:03 \
-A 2001:db8:1::2 -B ff0e::3 -q
tc_check_packets "dev $h2 ingress" 1 1
check_err $? "Multicast not received on first host"
tc_check_packets "dev $h3 ingress" 1 1
check_err $? "Multicast not received on second host"
delete_mcast_sg $rp1 :: ff0e::3 $rp2 $rp3
tc filter del dev $h3 ingress protocol ipv6 pref 1 handle 1 flower
tc filter del dev $h2 ingress protocol ipv6 pref 1 handle 1 flower
log_test "Unresolved queue IPv6"
}
trap cleanup EXIT
setup_prepare