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[IPV4]: reset IPCB flags when neccessary

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Reset IPSKB_XFRM_TUNNEL_SIZE flags in ipip and ip_gre hard_start_xmit
function before the packet reenters IP. This is neccessary so the
encapsulated packets are checked not to be oversized in xfrm4_output.c
again. Reset all flags in sit when a packet changes its address family.

Also remove some obsolete IPSKB flags.

Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Patrick McHardy
2006-01-06 23:04:01 -08:00
committed by David S. Miller
parent b05e106698
commit 8cdfab8a43
4 changed files with 7 additions and 5 deletions
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net/ipv4/ip_gre.c
+1
View File
@@ -832,6 +832,7 @@ static int ipgre_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
skb->h.raw = skb->nh.raw;
skb->nh.raw = skb_push(skb, gre_hlen);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
IPCB(skb)->flags &= ~IPSKB_XFRM_TUNNEL_SIZE;
dst_release(skb->dst);
skb->dst = &rt->u.dst;
net/ipv4/ipip.c
+1
View File
@@ -621,6 +621,7 @@ static int ipip_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
skb->h.raw = skb->nh.raw;
skb->nh.raw = skb_push(skb, sizeof(struct iphdr));
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
IPCB(skb)->flags &= ~IPSKB_XFRM_TUNNEL_SIZE;
dst_release(skb->dst);
skb->dst = &rt->u.dst;
net/ipv6/sit.c
+2
View File
@@ -381,6 +381,7 @@ static int ipip6_rcv(struct sk_buff *skb)
skb->mac.raw = skb->nh.raw;
skb->nh.raw = skb->data;
memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options));
IPCB(skb)->flags = 0;
skb->protocol = htons(ETH_P_IPV6);
skb->pkt_type = PACKET_HOST;
tunnel->stat.rx_packets++;
@@ -552,6 +553,7 @@ static int ipip6_tunnel_xmit(struct sk_buff *skb, struct net_device *dev)
skb->h.raw = skb->nh.raw;
skb->nh.raw = skb_push(skb, sizeof(struct iphdr));
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
IPCB(skb)->flags = 0;
dst_release(skb->dst);
skb->dst = &rt->u.dst;