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net: Don't return invalid table id error when dumping all families

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When doing a route dump across all address families, do not error out
if the table does not exist. This allows a route dump for AF_UNSPEC
with a table id that may only exist for some of the families.

Do return the table does not exist error if dumping routes for a
specific family and the table does not exist.

Signed-off-by: David Ahern <dsahern@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
David Ahern
2018-10-24 12:59:01 -07:00
committed by David S. Miller
parent 242afaa696
commit ae677bbb44
5 changed files with 14 additions and 0 deletions
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3
net/ipv4/ipmr.c
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@@ -2542,6 +2542,9 @@ static int ipmr_rtm_dumproute(struct sk_buff *skb, struct netlink_callback *cb)
mrt = ipmr_get_table(sock_net(skb->sk), filter.table_id);
if (!mrt) {
if (filter.dump_all_families)
return skb->len;
NL_SET_ERR_MSG(cb->extack, "ipv4: MR table does not exist");
return -ENOENT;
}