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authorMINOURA Makoto / 箕浦 真 <minoura@valinux.co.jp>2016-02-25 08:20:48 +0300
committerDavid S. Miller <davem@davemloft.net>2016-02-26 23:04:02 +0300
commit472681d57a5dde7c6d16b05469be57f1c4ed9d99 (patch)
tree2163ac3883c3c89c2a77abc356139edac189d966 /net/switchdev
parent4c0b6eaf373a5323f03a3a20c42fc435715b073d (diff)
downloadlinux-472681d57a5dde7c6d16b05469be57f1c4ed9d99.tar.xz
net: ndo_fdb_dump should report -EMSGSIZE to rtnl_fdb_dump.
When the send skbuff reaches the end, nlmsg_put and friends returns -EMSGSIZE but it is silently thrown away in ndo_fdb_dump. It is called within a for_each_netdev loop and the first fdb entry of a following netdev could fit in the remaining skbuff. This breaks the mechanism of cb->args[0] and idx to keep track of the entries that are already dumped, which results missing entries in bridge fdb show command. Signed-off-by: Minoura Makoto <minoura@valinux.co.jp> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/switchdev')
-rw-r--r--net/switchdev/switchdev.c5
1 files changed, 4 insertions, 1 deletions
diff --git a/net/switchdev/switchdev.c b/net/switchdev/switchdev.c
index 47f7da58a7f0..8b5833c1ff2e 100644
--- a/net/switchdev/switchdev.c
+++ b/net/switchdev/switchdev.c
@@ -1093,8 +1093,11 @@ int switchdev_port_fdb_dump(struct sk_buff *skb, struct netlink_callback *cb,
.cb = cb,
.idx = idx,
};
+ int err;
- switchdev_port_obj_dump(dev, &dump.fdb.obj, switchdev_port_fdb_dump_cb);
+ err = switchdev_port_obj_dump(dev, &dump.fdb.obj,
+ switchdev_port_fdb_dump_cb);
+ cb->args[1] = err;
return dump.idx;
}
EXPORT_SYMBOL_GPL(switchdev_port_fdb_dump);