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authorFlorian Westphal <fw@strlen.de>2018-12-18 19:15:27 +0300
committerDavid S. Miller <davem@davemloft.net>2018-12-19 22:21:38 +0300
commit4165079ba328dd47262a2183049d3591f0a750b1 (patch)
tree6c37280ad8ba6e1d028962bfb2e3ace1f590d3fc /Documentation/networking
parenta84e3f533324e40e4a99f50dee2188bf140d8098 (diff)
downloadlinux-4165079ba328dd47262a2183049d3591f0a750b1.tar.xz
net: switch secpath to use skb extension infrastructure
Remove skb->sp and allocate secpath storage via extension infrastructure. This also reduces sk_buff by 8 bytes on x86_64. Total size of allyesconfig kernel is reduced slightly, as there is less inlined code (one conditional atomic op instead of two on skb_clone). No differences in throughput in following ipsec performance tests: - transport mode with aes on 10GB link - tunnel mode between two network namespaces with aes and null cipher Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation/networking')
-rw-r--r--Documentation/networking/xfrm_device.txt7
1 files changed, 4 insertions, 3 deletions
diff --git a/Documentation/networking/xfrm_device.txt b/Documentation/networking/xfrm_device.txt
index 267f55b5f54a..a1c904dc70dc 100644
--- a/Documentation/networking/xfrm_device.txt
+++ b/Documentation/networking/xfrm_device.txt
@@ -111,9 +111,10 @@ the stack in xfrm_input().
xfrm_state_hold(xs);
store the state information into the skb
- skb->sp = secpath_dup(skb->sp);
- skb->sp->xvec[skb->sp->len++] = xs;
- skb->sp->olen++;
+ sp = secpath_set(skb);
+ if (!sp) return;
+ sp->xvec[sp->len++] = xs;
+ sp->olen++;
indicate the success and/or error status of the offload
xo = xfrm_offload(skb);