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authorHerbert Xu <herbert@gondor.apana.org.au>2007-11-13 21:43:11 -0800
committerDavid S. Miller <davem@davemloft.net>2008-01-28 14:53:48 -0800
commit862b82c6f960cc61274d370aa78ce1112f92a83e (patch)
tree51e252e1525dd7d02a695d428890a4c37fae2442 /net/ipv4
parentef76bc23ef2acf20c8f7f841a542d8ab74c827c6 (diff)
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[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 <herbert@gondor.apana.org.au> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/ipv4')
-rw-r--r--net/ipv4/route.c1
-rw-r--r--net/ipv4/xfrm4_output.c76
-rw-r--r--net/ipv4/xfrm4_policy.c1
-rw-r--r--net/ipv4/xfrm4_state.c2
4 files changed, 8 insertions, 72 deletions
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 137b8eb..94ef788 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -166,6 +166,7 @@ static struct dst_ops ipv4_dst_ops = {
.negative_advice = ipv4_negative_advice,
.link_failure = ipv4_link_failure,
.update_pmtu = ip_rt_update_pmtu,
+ .local_out = ip_local_out,
.entry_size = sizeof(struct rtable),
};
diff --git a/net/ipv4/xfrm4_output.c b/net/ipv4/xfrm4_output.c
index 0ffc3d0..2fb4efa 100644
--- a/net/ipv4/xfrm4_output.c
+++ b/net/ipv4/xfrm4_output.c
@@ -59,7 +59,7 @@ int xfrm4_prepare_output(struct xfrm_state *x, struct sk_buff *skb)
return err;
memset(IPCB(skb), 0, sizeof(*IPCB(skb)));
- IPCB(skb)->flags |= IPSKB_XFRM_TUNNEL_SIZE;
+ IPCB(skb)->flags |= IPSKB_XFRM_TUNNEL_SIZE | IPSKB_XFRM_TRANSFORMED;
skb->protocol = htons(ETH_P_IP);
@@ -67,87 +67,19 @@ int xfrm4_prepare_output(struct xfrm_state *x, struct sk_buff *skb)
}
EXPORT_SYMBOL(xfrm4_prepare_output);
-static inline int xfrm4_output_one(struct sk_buff *skb)
-{
- int err;
-
- err = xfrm_output(skb);
- if (err)
- goto error_nolock;
-
- IPCB(skb)->flags |= IPSKB_XFRM_TRANSFORMED;
- err = 0;
-
-out_exit:
- return err;
-error_nolock:
- kfree_skb(skb);
- goto out_exit;
-}
-
-static int xfrm4_output_finish2(struct sk_buff *skb)
-{
- int err;
-
- while (likely((err = xfrm4_output_one(skb)) == 0)) {
- nf_reset(skb);
-
- err = __ip_local_out(skb);
- if (unlikely(err != 1))
- break;
-
- if (!skb->dst->xfrm)
- return dst_output(skb);
-
- err = nf_hook(PF_INET, NF_IP_POST_ROUTING, skb, NULL,
- skb->dst->dev, xfrm4_output_finish2);
- if (unlikely(err != 1))
- break;
- }
-
- return err;
-}
-
static int xfrm4_output_finish(struct sk_buff *skb)
{
- struct sk_buff *segs;
-
#ifdef CONFIG_NETFILTER
if (!skb->dst->xfrm) {
IPCB(skb)->flags |= IPSKB_REROUTED;
return dst_output(skb);
}
-#endif
- if (!skb_is_gso(skb))
- return xfrm4_output_finish2(skb);
+ IPCB(skb)->flags |= IPSKB_XFRM_TRANSFORMED;
+#endif
skb->protocol = htons(ETH_P_IP);
- 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 = xfrm4_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 xfrm4_output(struct sk_buff *skb)
diff --git a/net/ipv4/xfrm4_policy.c b/net/ipv4/xfrm4_policy.c
index 1d75243..b4948c1 100644
--- a/net/ipv4/xfrm4_policy.c
+++ b/net/ipv4/xfrm4_policy.c
@@ -237,6 +237,7 @@ static struct dst_ops xfrm4_dst_ops = {
.update_pmtu = xfrm4_update_pmtu,
.destroy = xfrm4_dst_destroy,
.ifdown = xfrm4_dst_ifdown,
+ .local_out = __ip_local_out,
.gc_thresh = 1024,
.entry_size = sizeof(struct xfrm_dst),
};
diff --git a/net/ipv4/xfrm4_state.c b/net/ipv4/xfrm4_state.c
index 85f04b7..80292fb 100644
--- a/net/ipv4/xfrm4_state.c
+++ b/net/ipv4/xfrm4_state.c
@@ -11,6 +11,7 @@
#include <net/xfrm.h>
#include <linux/pfkeyv2.h>
#include <linux/ipsec.h>
+#include <linux/netfilter_ipv4.h>
static struct xfrm_state_afinfo xfrm4_state_afinfo;
@@ -66,6 +67,7 @@ static struct xfrm_state_afinfo xfrm4_state_afinfo = {
.family = AF_INET,
.proto = IPPROTO_IPIP,
.eth_proto = htons(ETH_P_IP),
+ .nf_post_routing = NF_IP_POST_ROUTING,
.owner = THIS_MODULE,
.init_flags = xfrm4_init_flags,
.init_tempsel = __xfrm4_init_tempsel,