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mpls: Return error for RTA_GATEWAY attribute

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[ Upstream commit be48220edd ]

MPLS does not support nexthops with an MPLS address family.
Specifically, it does not handle RTA_GATEWAY attribute. Make it
clear by returning an error.

Fixes: 03c0566542 ("mpls: Netlink commands to add, remove, and dump routes")
Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
David Ahern 2019-02-26 09:00:04 -08:00 • committed by Greg Kroah-Hartman
commit 4f3221dee1
1 changed files with 3 additions and 0 deletions
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3
net/mpls/af_mpls.c
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@ -1822,6 +1822,9 @@ static int rtm_to_route_config(struct sk_buff *skb,
goto errout;
break;
}
case RTA_GATEWAY:
NL_SET_ERR_MSG(extack, "MPLS does not support RTA_GATEWAY attribute");
goto errout;
case RTA_VIA:
{
if (nla_get_via(nla, &cfg->rc_via_alen,