[PATCH] aoe [1/3]: support multiple AoE listeners

Always clone incoming skbs, allowing other AoE listeners
to exist in the kernel.

Signed-off-by: "Ed L. Cashin" <ecashin@coraid.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>

1 files changed, 5 insertions, 17 deletions

diff --git a/drivers/block/aoe/aoenet.c b/drivers/block/aoe/aoenet.c
index 4be976940f69..fdff774b8ab9 100644
--- a/drivers/block/aoe/aoenet.c
+++ b/drivers/block/aoe/aoenet.c
@@ -92,18 +92,6 @@ mac_addr(char addr[6])
         return __be64_to_cpu(n);
 }
 
-static struct sk_buff *
-skb_check(struct sk_buff *skb)
-{
-        if (skb_is_nonlinear(skb))
-        if ((skb = skb_share_check(skb, GFP_ATOMIC)))
-        if (skb_linearize(skb, GFP_ATOMIC) < 0) {
-                dev_kfree_skb(skb);
-                return NULL;
-        }
-        return skb;
-}
-
 void
 aoenet_xmit(struct sk_buff *sl)
 {
@@ -125,14 +113,14 @@ aoenet_rcv(struct sk_buff *skb, struct net_device *ifp, struct packet_type *pt,
         struct aoe_hdr *h;
         u32 n;
 
-        skb = skb_check(skb);
-        if (!skb)
+        skb = skb_share_check(skb, GFP_ATOMIC);
+        if (skb == NULL)
                 return 0;
-
+        if (skb_is_nonlinear(skb))
+        if (skb_linearize(skb, GFP_ATOMIC) < 0)
+                goto exit;
         if (!is_aoe_netif(ifp))
                 goto exit;
-
-        //skb->len += ETH_HLEN; /* (1) */
         skb_push(skb, ETH_HLEN);        /* (1) */
 
         h = (struct aoe_hdr *) skb->mac.raw;