diff options
Diffstat (limited to 'net/ipv4/xfrm4_mode_tunnel.c')
| -rw-r--r-- | net/ipv4/xfrm4_mode_tunnel.c | 37 |
1 files changed, 11 insertions, 26 deletions
diff --git a/net/ipv4/xfrm4_mode_tunnel.c b/net/ipv4/xfrm4_mode_tunnel.c index 68a9f56ff09..cc8bbb274e3 100644 --- a/net/ipv4/xfrm4_mode_tunnel.c +++ b/net/ipv4/xfrm4_mode_tunnel.c @@ -36,53 +36,37 @@ static inline void ipip6_ecn_decapsulate(struct iphdr *iph, struct sk_buff *skb) static int xfrm4_tunnel_output(struct xfrm_state *x, struct sk_buff *skb) { struct dst_entry *dst = skb->dst; - struct xfrm_dst *xdst = (struct xfrm_dst*)dst; - struct iphdr *iph, *top_iph; + struct iphdr *top_iph; int flags; - iph = ip_hdr(skb); - skb_set_network_header(skb, -x->props.header_len); skb->mac_header = skb->network_header + offsetof(struct iphdr, protocol); - skb->transport_header = skb->network_header + sizeof(*iph); + skb->transport_header = skb->network_header + sizeof(*top_iph); top_iph = ip_hdr(skb); top_iph->ihl = 5; top_iph->version = 4; - flags = x->props.flags; + top_iph->protocol = x->inner_mode->afinfo->proto; /* DS disclosed */ - if (xdst->route->ops->family == AF_INET) { - top_iph->protocol = IPPROTO_IPIP; - top_iph->tos = INET_ECN_encapsulate(iph->tos, iph->tos); - top_iph->frag_off = (flags & XFRM_STATE_NOPMTUDISC) ? - 0 : (iph->frag_off & htons(IP_DF)); - } -#if defined(CONFIG_IPV6) || defined (CONFIG_IPV6_MODULE) - else { - struct ipv6hdr *ipv6h = (struct ipv6hdr*)iph; - top_iph->protocol = IPPROTO_IPV6; - top_iph->tos = INET_ECN_encapsulate(iph->tos, ipv6_get_dsfield(ipv6h)); - top_iph->frag_off = 0; - } -#endif + top_iph->tos = INET_ECN_encapsulate(XFRM_MODE_SKB_CB(skb)->tos, + XFRM_MODE_SKB_CB(skb)->tos); + flags = x->props.flags; if (flags & XFRM_STATE_NOECN) IP_ECN_clear(top_iph); - if (!top_iph->frag_off) - __ip_select_ident(top_iph, dst->child, 0); + top_iph->frag_off = (flags & XFRM_STATE_NOPMTUDISC) ? + 0 : XFRM_MODE_SKB_CB(skb)->frag_off; + ip_select_ident(top_iph, dst->child, NULL); top_iph->ttl = dst_metric(dst->child, RTAX_HOPLIMIT); top_iph->saddr = x->props.saddr.a4; top_iph->daddr = x->id.daddr.a4; - skb->protocol = htons(ETH_P_IP); - - memset(&(IPCB(skb)->opt), 0, sizeof(struct ip_options)); return 0; } @@ -136,7 +120,8 @@ out: static struct xfrm_mode xfrm4_tunnel_mode = { .input = xfrm4_tunnel_input, - .output = xfrm4_tunnel_output, + .output2 = xfrm4_tunnel_output, + .output = xfrm4_prepare_output, .owner = THIS_MODULE, .encap = XFRM_MODE_TUNNEL, .flags = XFRM_MODE_FLAG_TUNNEL, |