bridge/mdb: remove wrong use of NLM_F_MULTI

[ 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@cumulusnetworks.com>
Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Acked-by: Nikolay Aleksandrov <nikolay@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>

diff --git a/net/bridge/br_mdb.c b/net/bridge/br_mdb.c
index cd8deea2d074e6af6172968c60cdd4128d40b16c..db6b65a5f8115b26fd09d3d45357dd0ee0437eb0 100644 (file)
--- a/net/bridge/br_mdb.c
+++ b/net/bridge/br_mdb.c
@@ -256,7 +256,7 @@ static int nlmsg_populate_rtr_fill(struct sk_buff *skb,
        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;