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authorFlorian Westphal <fw@strlen.de>2019-05-03 17:46:18 +0200
committerSteffen Klassert <steffen.klassert@secunet.com>2019-06-06 08:34:50 +0200
commit4c203b0454b5b6bfafe2c4ab1b5472d4a7a8a0f2 (patch)
tree96cd1a45372a6602c24216c696d6c5b32658fa9b /net/xfrm/xfrm_input.c
parentxfrm: remove state and template sort indirections from xfrm_state_afinfo (diff)
downloadlinux-4c203b0454b5b6bfafe2c4ab1b5472d4a7a8a0f2.tar.xz
linux-4c203b0454b5b6bfafe2c4ab1b5472d4a7a8a0f2.zip
xfrm: remove eth_proto value from xfrm_state_afinfo
xfrm_prepare_input needs to lookup the state afinfo backend again to fetch the address family ethernet protocol value. There are only two address families, so a switch statement is simpler. While at it, use u8 for family and proto and remove the owner member -- its not used anywhere. Signed-off-by: Florian Westphal <fw@strlen.de> Signed-off-by: Steffen Klassert <steffen.klassert@secunet.com>
Diffstat (limited to 'net/xfrm/xfrm_input.c')
-rw-r--r--net/xfrm/xfrm_input.c24
1 files changed, 12 insertions, 12 deletions
diff --git a/net/xfrm/xfrm_input.c b/net/xfrm/xfrm_input.c
index 314973aaa414..8a00cc94c32c 100644
--- a/net/xfrm/xfrm_input.c
+++ b/net/xfrm/xfrm_input.c
@@ -359,28 +359,28 @@ static int xfrm_prepare_input(struct xfrm_state *x, struct sk_buff *skb)
afinfo = xfrm_state_afinfo_get_rcu(x->outer_mode.family);
if (likely(afinfo))
err = afinfo->extract_input(x, skb);
+ rcu_read_unlock();
- if (err) {
- rcu_read_unlock();
+ if (err)
return err;
- }
if (x->sel.family == AF_UNSPEC) {
inner_mode = xfrm_ip2inner_mode(x, XFRM_MODE_SKB_CB(skb)->protocol);
- if (!inner_mode) {
- rcu_read_unlock();
+ if (!inner_mode)
return -EAFNOSUPPORT;
- }
}
- afinfo = xfrm_state_afinfo_get_rcu(inner_mode->family);
- if (unlikely(!afinfo)) {
- rcu_read_unlock();
- return -EAFNOSUPPORT;
+ switch (inner_mode->family) {
+ case AF_INET:
+ skb->protocol = htons(ETH_P_IP);
+ break;
+ case AF_INET6:
+ skb->protocol = htons(ETH_P_IPV6);
+ default:
+ WARN_ON_ONCE(1);
+ break;
}
- skb->protocol = afinfo->eth_proto;
- rcu_read_unlock();
return xfrm_inner_mode_encap_remove(x, inner_mode, skb);
}