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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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8
include/net/ip.h
View File

@ -37,11 +37,9 @@ struct inet_skb_parm
struct ip_options opt; /* Compiled IP options */ struct ip_options opt; /* Compiled IP options */
unsigned char flags; unsigned char flags;
#define IPSKB_MASQUERADED 1 #define IPSKB_FORWARDED 1
#define IPSKB_TRANSLATED 2 #define IPSKB_XFRM_TUNNEL_SIZE 2
#define IPSKB_FORWARDED 4 #define IPSKB_FRAG_COMPLETE 4
#define IPSKB_XFRM_TUNNEL_SIZE 8
#define IPSKB_FRAG_COMPLETE 16
}; };
struct ipcm_cookie struct ipcm_cookie

1
net/ipv4/ip_gre.c
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->h.raw = skb->nh.raw;
skb->nh.raw = skb_push(skb, gre_hlen); skb->nh.raw = skb_push(skb, gre_hlen);
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt)); memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
IPCB(skb)->flags &= ~IPSKB_XFRM_TUNNEL_SIZE;
dst_release(skb->dst); dst_release(skb->dst);
skb->dst = &rt->u.dst; skb->dst = &rt->u.dst;

1
net/ipv4/ipip.c
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->h.raw = skb->nh.raw;
skb->nh.raw = skb_push(skb, sizeof(struct iphdr)); skb->nh.raw = skb_push(skb, sizeof(struct iphdr));
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt)); memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
IPCB(skb)->flags &= ~IPSKB_XFRM_TUNNEL_SIZE;
dst_release(skb->dst); dst_release(skb->dst);
skb->dst = &rt->u.dst; skb->dst = &rt->u.dst;

2
net/ipv6/sit.c
View File

@ -381,6 +381,7 @@ static int ipip6_rcv(struct sk_buff *skb)
skb->mac.raw = skb->nh.raw; skb->mac.raw = skb->nh.raw;
skb->nh.raw = skb->data; skb->nh.raw = skb->data;
memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options)); memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options));
IPCB(skb)->flags = 0;
skb->protocol = htons(ETH_P_IPV6); skb->protocol = htons(ETH_P_IPV6);
skb->pkt_type = PACKET_HOST; skb->pkt_type = PACKET_HOST;
tunnel->stat.rx_packets++; 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->h.raw = skb->nh.raw;
skb->nh.raw = skb_push(skb, sizeof(struct iphdr)); skb->nh.raw = skb_push(skb, sizeof(struct iphdr));
memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt)); memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
IPCB(skb)->flags = 0;
dst_release(skb->dst); dst_release(skb->dst);
skb->dst = &rt->u.dst; skb->dst = &rt->u.dst;