net: remove redundant code in dev_hard_start_xmit()

This reverts commit 068a2de57ddf4f4 (net: release dst entry while
cache-hot for GSO case too)

Before GSO packet segmentation, we already take care of skb->dst if it
can be released.

There is no point adding extra test for every segment in the gso loop.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Krishna Kumar <krkumar2@in.ibm.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/net/core/dev.c b/net/core/dev.c
index 9e26b8d..7c30dce 100644 (file)
--- a/net/core/dev.c
+++ b/net/core/dev.c
@@ -2546,13 +2546,6 @@ gso:
                skb->next = nskb->next;
                nskb->next = NULL;
 
-               /*
-                * If device doesn't need nskb->dst, release it right now while
-                * its hot in this cpu cache
-                */
-               if (dev->priv_flags & IFF_XMIT_DST_RELEASE)
-                       skb_dst_drop(nskb);
-
                if (!list_empty(&ptype_all))
                        dev_queue_xmit_nit(nskb, dev);