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>

1 files changed, 4 insertions, 4 deletions

diff --git a/net/sched/cls_flow.c b/net/sched/cls_flow.c
index 0ef4e3065bcd..9402a7fd3785 100644
--- a/net/sched/cls_flow.c
+++ b/net/sched/cls_flow.c
@@ -84,7 +84,7 @@ static u32 flow_get_dst(const struct sk_buff *skb)
         case htons(ETH_P_IPV6):
                 return ntohl(ipv6_hdr(skb)->daddr.s6_addr32[3]);
         default:
-                return addr_fold(skb->dst) ^ (__force u16)skb->protocol;
+                return addr_fold(skb_dst(skb)) ^ (__force u16)skb->protocol;
         }
 }
 
@@ -163,7 +163,7 @@ static u32 flow_get_proto_dst(const struct sk_buff *skb)
                 break;
         }
         default:
-                res = addr_fold(skb->dst) ^ (__force u16)skb->protocol;
+                res = addr_fold(skb_dst(skb)) ^ (__force u16)skb->protocol;
         }
 
         return res;
@@ -251,8 +251,8 @@ fallback:
 static u32 flow_get_rtclassid(const struct sk_buff *skb)
 {
 #ifdef CONFIG_NET_CLS_ROUTE
-        if (skb->dst)
-                return skb->dst->tclassid;
+        if (skb_dst(skb))
+                return skb_dst(skb)->tclassid;
 #endif
         return 0;
 }