net: RTNETLINK adjusting values of min_ifinfo_dump_size

Setting link parameters on a netdevice changes the value
of if_nlmsg_size(), therefore it is necessary to recalculate
min_ifinfo_dump_size.

Signed-off-by: Stefan Gula <steweg@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index f16444bc6cbb1ca25e57df0d18e7d267ceedf1f9..65aebd45002786f4c00f6a5b4bc6ac45026f7f86 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -1509,6 +1509,9 @@ errout:
 
        if (send_addr_notify)
                call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
+       min_ifinfo_dump_size = max_t(u16, if_nlmsg_size(dev),
+                                    min_ifinfo_dump_size);
+
        return err;
 }