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| author | Arnd Bergmann <arnd@arndb.de> | 2011-07-28 15:25:46 +0000 |
|---|---|---|
| committer | Arnd Bergmann <arnd@arndb.de> | 2011-07-28 15:25:46 +0000 |
| commit | 6124a4e430b64d1577438c8648c59e996d02e73e (patch) | |
| tree | 49cfafad785d1c9e403a5b0d755298b9af2c260f /net/ipv4/gre.c | |
| parent | 8e267f3da5f117d2f1316cf6ddf740f93f1c73aa (diff) | |
| parent | 580975d7f48d7d047e22bb0f42adf7557801d8d4 (diff) | |
| download | op-kernel-dev-6124a4e430b64d1577438c8648c59e996d02e73e.zip op-kernel-dev-6124a4e430b64d1577438c8648c59e996d02e73e.tar.gz | |
Merge branch 'imx/dt' into next/dt
Diffstat (limited to 'net/ipv4/gre.c')
| -rw-r--r-- | net/ipv4/gre.c | 21 |
1 files changed, 6 insertions, 15 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 = { |
