[PATCH 5.2 01/85] bridge/mdb: remove wrong use of NLM_F_MULTI

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From: Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>

[ Upstream commit 94a72b3f024fc7e9ab640897a1e38583a470659d ]

NLM_F_MULTI must be used only when a NLMSG_DONE message is sent at the end.
In fact, NLMSG_DONE is sent only at the end of a dump.

Libraries like libnl will wait forever for NLMSG_DONE.

Fixes: 949f1e39a617 ("bridge: mdb: notify on router port add and del")
CC: Nikolay Aleksandrov <nikolay@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@xxxxxxxxx>
Acked-by: Nikolay Aleksandrov <nikolay@xxxxxxxxxxxxxxxxxxx>
Signed-off-by: David S. Miller <davem@xxxxxxxxxxxxx>
Signed-off-by: Greg Kroah-Hartman <gregkh@xxxxxxxxxxxxxxxxxxx>
---
 net/bridge/br_mdb.c |    2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -437,7 +437,7 @@ static int nlmsg_populate_rtr_fill(struc
 	struct nlmsghdr *nlh;
 	struct nlattr *nest;
 
-	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*bpm), NLM_F_MULTI);
+	nlh = nlmsg_put(skb, pid, seq, type, sizeof(*bpm), 0);
 	if (!nlh)
 		return -EMSGSIZE;
 





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