[PATCH net] nexthop: Fix attribute checking for groups

[David Ahern <dsahern@kernel.org>]

From: David Ahern <dsahern@gmail.com>

For nexthop groups, attributes after NHA_GROUP_TYPE are invalid, but
nh_check_attr_group starts checking at NHA_GROUP. The group type defaults
to multipath and the NHA_GROUP_TYPE is currently optional so this has
slipped through so far. Fix the attribute checking to handle support of
new group types.

Fixes: 430a049190de ("nexthop: Add support for nexthop groups")
Signed-off-by: ASSOGBA Emery <assogba.emery@gmail.com>
Signed-off-by: David Ahern <dsahern@gmail.com>
---
 net/ipv4/nexthop.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/net/ipv4/nexthop.c b/net/ipv4/nexthop.c
index fdfca534d094..2a31c4af845e 100644
--- a/net/ipv4/nexthop.c
+++ b/net/ipv4/nexthop.c
@@ -433,7 +433,7 @@ static int nh_check_attr_group(struct net *net, struct nlattr *tb[],
 		if (!valid_group_nh(nh, len, extack))
 			return -EINVAL;
 	}
-	for (i = NHA_GROUP + 1; i < __NHA_MAX; ++i) {
+	for (i = NHA_GROUP_TYPE + 1; i < __NHA_MAX; ++i) {
 		if (!tb[i])
 			continue;
 
-- 
2.21.1 (Apple Git-122.3)