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net/sched: cls_flower: Properly handle classifier flags dumping 

Dump the classifier flags only if non zero and make sure to check
the return status of the handler that puts them into the netlink msg.

Signed-off-by: Or Gerlitz <ogerlitz@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Or Gerlitz 2017-02-16 10:31:10 +02:00 committed by David S. Miller
parent ad8e963ca6
commit 749e6720d2
1 changed files with 2 additions and 1 deletions
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3
net/sched/cls_flower.c
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@ -1229,7 +1229,8 @@ static int fl_dump(struct net *net, struct tcf_proto *tp, unsigned long fh,
if (fl_dump_key_flags(skb, key->control.flags, mask->control.flags))
goto nla_put_failure;
nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags);
if (f->flags && nla_put_u32(skb, TCA_FLOWER_FLAGS, f->flags))
goto nla_put_failure;
if (tcf_exts_dump(skb, &f->exts))
goto nla_put_failure;