summaryrefslogtreecommitdiff
path: root/net/tipc/udp_media.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/tipc/udp_media.c')
-rw-r--r--net/tipc/udp_media.c5
1 files changed, 5 insertions, 0 deletions
diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index 9bc0b1e515fa..0021c01dec17 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -52,6 +52,8 @@
/* IANA assigned UDP port */
#define UDP_PORT_DEFAULT 6118
+#define UDP_MIN_HEADROOM 28
+
static const struct nla_policy tipc_nl_udp_policy[TIPC_NLA_UDP_MAX + 1] = {
[TIPC_NLA_UDP_UNSPEC] = {.type = NLA_UNSPEC},
[TIPC_NLA_UDP_LOCAL] = {.type = NLA_BINARY,
@@ -156,6 +158,9 @@ static int tipc_udp_send_msg(struct net *net, struct sk_buff *skb,
struct sk_buff *clone;
struct rtable *rt;
+ if (skb_headroom(skb) < UDP_MIN_HEADROOM)
+ pskb_expand_head(skb, UDP_MIN_HEADROOM, 0, GFP_ATOMIC);
+
clone = skb_clone(skb, GFP_ATOMIC);
skb_set_inner_protocol(clone, htons(ETH_P_TIPC));
ub = rcu_dereference_rtnl(b->media_ptr);