From 0883ae0e5599656b5f3b0e9ce474e01dee7dfee4 Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Sun, 30 Dec 2007 21:10:14 -0800 Subject: [PATCH] [IPSEC]: Fix transport-mode async resume on intput without netfilter When netfilter is off the transport-mode async resumption doesn't work because we don't push back the IP header. This patch fixes that by moving most of the code outside of ifdef NETFILTER since the only part that's not common is the short-circuit in the protocol handler. Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- net/ipv4/xfrm4_input.c | 12 +++++------- net/ipv6/xfrm6_input.c | 12 +++++------- 2 files changed, 10 insertions(+), 14 deletions(-) diff --git a/net/ipv4/xfrm4_input.c b/net/ipv4/xfrm4_input.c index 33f990d56c91..390dcb1354a5 100644 --- a/net/ipv4/xfrm4_input.c +++ b/net/ipv4/xfrm4_input.c @@ -51,7 +51,11 @@ int xfrm4_transport_finish(struct sk_buff *skb, int async) iph->protocol = XFRM_MODE_SKB_CB(skb)->protocol; -#ifdef CONFIG_NETFILTER +#ifndef CONFIG_NETFILTER + if (!async) + return -iph->protocol; +#endif + __skb_push(skb, skb->data - skb_network_header(skb)); iph->tot_len = htons(skb->len); ip_send_check(iph); @@ -59,12 +63,6 @@ int xfrm4_transport_finish(struct sk_buff *skb, int async) NF_HOOK(PF_INET, NF_INET_PRE_ROUTING, skb, skb->dev, NULL, xfrm4_rcv_encap_finish); return 0; -#else - if (async) - return xfrm4_rcv_encap_finish(skb); - - return -iph->protocol; -#endif } /* If it's a keepalive packet, then just eat it. diff --git a/net/ipv6/xfrm6_input.c b/net/ipv6/xfrm6_input.c index 063ce6ed1bd0..a4714d76ae6b 100644 --- a/net/ipv6/xfrm6_input.c +++ b/net/ipv6/xfrm6_input.c @@ -34,19 +34,17 @@ int xfrm6_transport_finish(struct sk_buff *skb, int async) skb_network_header(skb)[IP6CB(skb)->nhoff] = XFRM_MODE_SKB_CB(skb)->protocol; -#ifdef CONFIG_NETFILTER +#ifndef CONFIG_NETFILTER + if (!async) + return 1; +#endif + ipv6_hdr(skb)->payload_len = htons(skb->len); __skb_push(skb, skb->data - skb_network_header(skb)); NF_HOOK(PF_INET6, NF_INET_PRE_ROUTING, skb, skb->dev, NULL, ip6_rcv_finish); return -1; -#else - if (async) - return ip6_rcv_finish(skb); - - return 1; -#endif } int xfrm6_rcv(struct sk_buff *skb) -- 2.20.1