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authorLi RongQing <roy.qing.li@gmail.com>2014-10-16 09:17:18 +0800
committerDavid S. Miller <davem@davemloft.net>2014-10-15 23:33:23 -0400
commit91269e390d062b526432f2ef1352b8df82e0e0bc (patch)
tree3928c4ef40d25a2f6e5987cb67b2578844fc6588 /drivers/net/vxlan.c
parentce6502a8f9572179f044a4d62667c4645256d6e4 (diff)
vxlan: using pskb_may_pull as early as possible
pskb_may_pull should be used to check if skb->data has enough space, skb->len can not ensure that. Cc: Cong Wang <xiyou.wangcong@gmail.com> Signed-off-by: Li RongQing <roy.qing.li@gmail.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/vxlan.c')
-rw-r--r--drivers/net/vxlan.c6
1 files changed, 2 insertions, 4 deletions
diff --git a/drivers/net/vxlan.c b/drivers/net/vxlan.c
index faf1bd1f1ecf..77ab844cd8ae 100644
--- a/drivers/net/vxlan.c
+++ b/drivers/net/vxlan.c
@@ -1437,9 +1437,6 @@ static int neigh_reduce(struct net_device *dev, struct sk_buff *skb)
if (!in6_dev)
goto out;
- if (!pskb_may_pull(skb, skb->len))
- goto out;
-
iphdr = ipv6_hdr(skb);
saddr = &iphdr->saddr;
daddr = &iphdr->daddr;
@@ -1880,7 +1877,8 @@ static netdev_tx_t vxlan_xmit(struct sk_buff *skb, struct net_device *dev)
return arp_reduce(dev, skb);
#if IS_ENABLED(CONFIG_IPV6)
else if (ntohs(eth->h_proto) == ETH_P_IPV6 &&
- skb->len >= sizeof(struct ipv6hdr) + sizeof(struct nd_msg) &&
+ pskb_may_pull(skb, sizeof(struct ipv6hdr)
+ + sizeof(struct nd_msg)) &&
ipv6_hdr(skb)->nexthdr == IPPROTO_ICMPV6) {
struct nd_msg *msg;