net: increase preallocated size of nlmsg to accomodate for IFLA_STATS64

When more data is stuffed into an nlmsg than initially projected, an
extra allocation needs to be done. Reserve enough for IFLA_STATS64 so
that this does not to needlessy happen.

Signed-off-by: Jan Engelhardt <jengelh@medozas.de>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 1 insertions, 0 deletions

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index ed0766f0181a..bf919b6acea2 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -653,6 +653,7 @@ static inline size_t if_nlmsg_size(const struct net_device *dev)
                + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */
                + nla_total_size(sizeof(struct rtnl_link_ifmap))
                + nla_total_size(sizeof(struct rtnl_link_stats))
+               + nla_total_size(sizeof(struct rtnl_link_stats64))
                + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
                + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */
                + nla_total_size(4) /* IFLA_TXQLEN */