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mlxsw: spectrum_router: Prevent ipv6 gateway with v4 route via replace and append

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mlxsw currently does not support v6 gateways with v4 routes. Commit
19a9d136f1 ("ipv4: Flag fib_info with a fib_nh using IPv6 gateway")
prevents a route from being added, but nothing stops the replace or
append. Add a catch for them too.
    $ ip  ro add 172.16.2.0/24 via 10.99.1.2
    $ ip  ro replace 172.16.2.0/24 via inet6 fe80::202:ff:fe00:b dev swp1s0
    Error: mlxsw_spectrum: IPv6 gateway with IPv4 route is not supported.
    $ ip  ro append 172.16.2.0/24 via inet6 fe80::202:ff:fe00:b dev swp1s0
    Error: mlxsw_spectrum: IPv6 gateway with IPv4 route is not supported.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern 2019-04-23 16:03:29 -07:00 committed by David S. Miller
parent 08308f149b
commit 7973d9e767
1 changed files with 2 additions and 0 deletions
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2
drivers/net/ethernet/mellanox/mlxsw/spectrum_router.c
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@ -6105,6 +6105,8 @@ static int mlxsw_sp_router_fib_event(struct notifier_block *nb,
return notifier_from_errno(err);
break;
case FIB_EVENT_ENTRY_ADD:
case FIB_EVENT_ENTRY_REPLACE: /* fall through */
case FIB_EVENT_ENTRY_APPEND: /* fall through */
if (router->aborted) {
NL_SET_ERR_MSG_MOD(info->extack, "FIB offload was aborted. Not configuring route");
return notifier_from_errno(-EINVAL);