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Diffstat (limited to 'net/tipc/udp_media.c')
-rw-r--r--net/tipc/udp_media.c13
1 files changed, 12 insertions, 1 deletions
diff --git a/net/tipc/udp_media.c b/net/tipc/udp_media.c
index 66deebc66..cd7c5f131 100644
--- a/net/tipc/udp_media.c
+++ b/net/tipc/udp_media.c
@@ -48,10 +48,13 @@
#include <linux/tipc_netlink.h>
#include "core.h"
#include "bearer.h"
+#include "msg.h"
/* 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 +159,9 @@ 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);
@@ -194,7 +200,8 @@ static int tipc_udp_send_msg(struct net *net, struct sk_buff *skb,
.saddr = src->ipv6,
.flowi6_proto = IPPROTO_UDP
};
- err = ipv6_stub->ipv6_dst_lookup(ub->ubsock->sk, &ndst, &fl6);
+ err = ipv6_stub->ipv6_dst_lookup(net, ub->ubsock->sk, &ndst,
+ &fl6);
if (err)
goto tx_error;
ttl = ip6_dst_hoplimit(ndst);
@@ -216,6 +223,10 @@ static int tipc_udp_recv(struct sock *sk, struct sk_buff *skb)
{
struct udp_bearer *ub;
struct tipc_bearer *b;
+ int usr = msg_user(buf_msg(skb));
+
+ if ((usr == LINK_PROTOCOL) || (usr == NAME_DISTRIBUTOR))
+ skb_linearize(skb);
ub = rcu_dereference_sk_user_data(sk);
if (!ub) {