kernel-fxtec-pro1x/tools/testing
Benjamin Poirier 60845caf25 ipv6: Fix route replacement with dev-only route
[ Upstream commit e404b8c7cfb31654c9024d497cec58a501501692 ]

After commit 2759647247 ("ipv6: fix ECMP route replacement") it is no
longer possible to replace an ECMP-able route by a non ECMP-able route.
For example,
	ip route add 2001:db8::1/128 via fe80::1 dev dummy0
	ip route replace 2001:db8::1/128 dev dummy0
does not work as expected.

Tweak the replacement logic so that point 3 in the log of the above commit
becomes:
3. If the new route is not ECMP-able, and no matching non-ECMP-able route
exists, replace matching ECMP-able route (if any) or add the new route.

We can now summarize the entire replace semantics to:
When doing a replace, prefer replacing a matching route of the same
"ECMP-able-ness" as the replace argument. If there is no such candidate,
fallback to the first route found.

Fixes: 2759647247 ("ipv6: fix ECMP route replacement")
Signed-off-by: Benjamin Poirier <bpoirier@cumulusnetworks.com>
Reviewed-by: Michal Kubecek <mkubecek@suse.cz>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
2020-03-05 16:42:16 +01:00
..
fault-injection
ktest
nvdimm libnvdimm/nfit_test: Fix acpi_handle redefinition 2019-10-11 18:21:21 +02:00
radix-tree idr: Fix idr_get_next race with idr_remove 2019-11-24 08:19:11 +01:00
scatterlist
selftests ipv6: Fix route replacement with dev-only route 2020-03-05 16:42:16 +01:00
vsock