net: skb->dst accessors

Define three accessors to get/set dst attached to a skb

struct dst_entry *skb_dst(const struct sk_buff *skb)

void skb_dst_set(struct sk_buff *skb, struct dst_entry *dst)

void skb_dst_drop(struct sk_buff *skb)
This one should replace occurrences of :
dst_release(skb->dst)
skb->dst = NULL;

Delete skb->dst field

Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 2 insertions, 2 deletions

diff --git a/security/selinux/hooks.c b/security/selinux/hooks.c
index 2fcad7c33eaf..4bfc6153ad4f 100644
--- a/security/selinux/hooks.c
+++ b/security/selinux/hooks.c
@@ -4503,7 +4503,7 @@ static unsigned int selinux_ip_postroute(struct sk_buff *skb, int ifindex,
          * when the packet is on it's final way out.
          * NOTE: there appear to be some IPv6 multicast cases where skb->dst
          *       is NULL, in this case go ahead and apply access control. */
-        if (skb->dst != NULL && skb->dst->xfrm != NULL)
+        if (skb_dst(skb) != NULL && skb_dst(skb)->xfrm != NULL)
                 return NF_ACCEPT;
 #endif
         secmark_active = selinux_secmark_enabled();
diff --git a/security/selinux/xfrm.c b/security/selinux/xfrm.c
index c0eb72013d67..72b18452e1a1 100644
--- a/security/selinux/xfrm.c
+++ b/security/selinux/xfrm.c
@@ -447,7 +447,7 @@ int selinux_xfrm_postroute_last(u32 isec_sid, struct sk_buff *skb,
         struct dst_entry *dst;
         int rc = 0;
 
-        dst = skb->dst;
+        dst = skb_dst(skb);
 
         if (dst) {
                 struct dst_entry *dst_test;