net: reduce structures when XFRM=n

ifdef out
* struct sk_buff::sp		(pointer)
* struct dst_entry::xfrm	(pointer)
* struct sock::sk_policy	(2 pointers)

Signed-off-by: Alexey Dobriyan <adobriyan@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 1 deletions

diff --git a/net/ipv6/icmp.c b/net/ipv6/icmp.c
index 9b7d19ae5ced..508a713ac045 100644
--- a/net/ipv6/icmp.c
+++ b/net/ipv6/icmp.c
@@ -646,9 +646,10 @@ static int icmpv6_rcv(struct sk_buff *skb)
         int type;
 
         if (!xfrm6_policy_check(NULL, XFRM_POLICY_IN, skb)) {
+                struct sec_path *sp = skb_sec_path(skb);
                 int nh;
 
-                if (!(skb->sp && skb->sp->xvec[skb->sp->len - 1]->props.flags &
+                if (!(sp && sp->xvec[sp->len - 1]->props.flags &
                                  XFRM_STATE_ICMP))
                         goto drop_no_count;