From 862b82c6f960cc61274d370aa78ce1112f92a83e Mon Sep 17 00:00:00 2001 From: Herbert Xu Date: Tue, 13 Nov 2007 21:43:11 -0800 Subject: [IPSEC]: Merge most of the output path As part of the work on asynchrnous cryptographic operations, we need to be able to resume from the spot where they occur. As such, it helps if we isolate them to one spot. This patch moves most of the remaining family-specific processing into the common output code. Signed-off-by: Herbert Xu Signed-off-by: David S. Miller --- net/ipv6/xfrm6_output.c | 77 +++++-------------------------------------------- 1 file changed, 7 insertions(+), 70 deletions(-) (limited to 'net/ipv6/xfrm6_output.c') diff --git a/net/ipv6/xfrm6_output.c b/net/ipv6/xfrm6_output.c index 0f0ff51f6dba..a0a924991c4f 100644 --- a/net/ipv6/xfrm6_output.c +++ b/net/ipv6/xfrm6_output.c @@ -66,6 +66,9 @@ int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb) return err; memset(IP6CB(skb), 0, sizeof(*IP6CB(skb))); +#ifdef CONFIG_NETFILTER + IP6CB(skb)->flags |= IP6SKB_XFRM_TRANSFORMED; +#endif skb->protocol = htons(ETH_P_IPV6); @@ -73,80 +76,14 @@ int xfrm6_prepare_output(struct xfrm_state *x, struct sk_buff *skb) } EXPORT_SYMBOL(xfrm6_prepare_output); -static inline int xfrm6_output_one(struct sk_buff *skb) -{ - int err; - - err = xfrm_output(skb); - if (err) - goto error_nolock; - - IP6CB(skb)->flags |= IP6SKB_XFRM_TRANSFORMED; - err = 0; - -out_exit: - return err; -error_nolock: - kfree_skb(skb); - goto out_exit; -} - -static int xfrm6_output_finish2(struct sk_buff *skb) -{ - int err; - - while (likely((err = xfrm6_output_one(skb)) == 0)) { - nf_reset(skb); - - err = __ip6_local_out(skb); - if (unlikely(err != 1)) - break; - - if (!skb->dst->xfrm) - return dst_output(skb); - - err = nf_hook(PF_INET6, NF_IP6_POST_ROUTING, skb, NULL, - skb->dst->dev, xfrm6_output_finish2); - if (unlikely(err != 1)) - break; - } - - return err; -} - static int xfrm6_output_finish(struct sk_buff *skb) { - struct sk_buff *segs; - - if (!skb_is_gso(skb)) - return xfrm6_output_finish2(skb); +#ifdef CONFIG_NETFILTER + IP6CB(skb)->flags |= IP6SKB_XFRM_TRANSFORMED; +#endif skb->protocol = htons(ETH_P_IPV6); - segs = skb_gso_segment(skb, 0); - kfree_skb(skb); - if (unlikely(IS_ERR(segs))) - return PTR_ERR(segs); - - do { - struct sk_buff *nskb = segs->next; - int err; - - segs->next = NULL; - err = xfrm6_output_finish2(segs); - - if (unlikely(err)) { - while ((segs = nskb)) { - nskb = segs->next; - segs->next = NULL; - kfree_skb(segs); - } - return err; - } - - segs = nskb; - } while (segs); - - return 0; + return xfrm_output(skb); } int xfrm6_output(struct sk_buff *skb) -- cgit v1.2.3-59-g8ed1b