selftests: fcnal: Test SO_DONTROUTE on raw and ping sockets.
authorGuillaume Nault <gnault@redhat.com>
Thu, 11 May 2023 14:39:46 +0000 (16:39 +0200)
committerDavid S. Miller <davem@davemloft.net>
Fri, 12 May 2023 08:43:56 +0000 (09:43 +0100)
commitceec9f272432b03168376d6487e7e7817d215f07
tree911c977a69ebbd16ebe2c7d253a8cb71cbc3c2cb
parenta431327c4faacf978defa94dd0da1710d0c69801
selftests: fcnal: Test SO_DONTROUTE on raw and ping sockets.

Use ping -r to test the kernel behaviour with raw and ping sockets
having the SO_DONTROUTE option.

Since ipv4_ping_novrf() is called with different values of
net.ipv4.ping_group_range, then it tests both raw and ping sockets
(ping uses ping sockets if its user ID belongs to ping_group_range
and raw sockets otherwise).

With both socket types, sending packets to a neighbour (on link) host,
should work. When the host is behind a router, sending should fail.

Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
tools/testing/selftests/net/fcnal-test.sh