3 files changed, 8 insertions, 17 deletions
diff --git a/net/ipv4/gre.c b/net/ipv4/gre.c
index 9dbe108..dbfc21d 100644
--- a/net/ipv4/gre.c
+++ b/net/ipv4/gre.c
@@ -15,6 +15,7 @@
 #include <linux/kmod.h>
 #include <linux/skbuff.h>
 #include <linux/in.h>
+#include <linux/ip.h>
 #include <linux/netdevice.h>
 #include <linux/spinlock.h>
 #include <net/protocol.h>
@@ -96,27 +97,17 @@ drop:
 static void gre_err(struct sk_buff *skb, u32 info)
 {
 	const struct gre_protocol *proto;
-	u8 ver;
-
-	if (!pskb_may_pull(skb, 12))
-		goto drop;
+	const struct iphdr *iph = (const struct iphdr *)skb->data;
+	u8 ver = skb->data[(iph->ihl<<2) + 1]&0x7f;
 
-	ver = skb->data[1]&0x7f;
 	if (ver >= GREPROTO_MAX)
-		goto drop;
+		return;
 
 	rcu_read_lock();
 	proto = rcu_dereference(gre_proto[ver]);
-	if (!proto || !proto->err_handler)
-		goto drop_unlock;
-	proto->err_handler(skb, info);
-	rcu_read_unlock();
-	return;
-
-drop_unlock:
+	if (proto && proto->err_handler)
+		proto->err_handler(skb, info);
 	rcu_read_unlock();
-drop:
-	kfree_skb(skb);
 }
 
 static const struct net_protocol net_gre_protocol = {
diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index aae2bd8..58e8791 100644
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -1796,7 +1796,7 @@ static struct mr_table *ipmr_rt_fib_lookup(struct net *net, struct sk_buff *skb)
 	struct flowi4 fl4 = {
 		.daddr = iph->daddr,
 		.saddr = iph->saddr,
-		.flowi4_tos = iph->tos,
+		.flowi4_tos = RT_TOS(iph->tos),
 		.flowi4_oif = rt->rt_oif,
 		.flowi4_iif = rt->rt_iif,
 		.flowi4_mark = rt->rt_mark,
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 3313730..1730689 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -1740,7 +1740,7 @@ void ip_rt_get_source(u8 *addr, struct sk_buff *skb, struct rtable *rt)
 		memset(&fl4, 0, sizeof(fl4));
 		fl4.daddr = iph->daddr;
 		fl4.saddr = iph->saddr;
-		fl4.flowi4_tos = iph->tos;
+		fl4.flowi4_tos = RT_TOS(iph->tos);
 		fl4.flowi4_oif = rt->dst.dev->ifindex;
 		fl4.flowi4_iif = skb->dev->ifindex;
 		fl4.flowi4_mark = skb->mark;