TencentOS-kernel/tools/testing
Sean Tranchetti 0e9504950e tools: selftests: add test for changing routes with PTMU exceptions
[ Upstream commit 5316a7c0130acf09bfc8bb0092407006010fcccc ]

Adds new 2 new tests to the PTMU script: pmtu_ipv4/6_route_change.

These tests explicitly test for a recently discovered problem in the
IPv6 routing framework where PMTU exceptions were not properly released
when replacing a route via "ip route change ...".

After creating PMTU exceptions, the route from the device A to R1 will be
replaced with a new route, then device A will be deleted. If the PMTU
exceptions were properly cleaned up by the kernel, this device deletion
will succeed. Otherwise, the unregistration of the device will stall, and
messages such as the following will be logged in dmesg:

unregister_netdevice: waiting for veth_A-R1 to become free. Usage count = 4

Signed-off-by: Sean Tranchetti <stranche@codeaurora.org>
Reviewed-by: David Ahern <dsahern@kernel.org>
Link: https://lore.kernel.org/r/1609892546-11389-2-git-send-email-stranche@quicinc.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2021-04-12 12:51:16 +08:00
..
fault-injection Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
ktest ktest.pl: If size of log is too big to email, email error message 2021-03-16 16:42:19 +08:00
nvdimm tools/test/nvdimm: Fix out of tree build 2021-03-16 16:26:45 +08:00
radix-tree ida: Free allocated bitmap in error path 2021-03-16 16:38:50 +08:00
scatterlist Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00
selftests tools: selftests: add test for changing routes with PTMU exceptions 2021-04-12 12:51:16 +08:00
vsock Init Repo base on linux 5.4.32 long term, and add base tlinux kernel interfaces. 2021-03-16 11:01:34 +08:00