diff options
| author | Krishna Kumar <krkumar2@in.ibm.com> | 2009-12-09 20:59:58 +0000 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2011-01-07 14:43:14 -0800 |
| commit | 60a517cab5e8885d8873bfa3acc2a138fbb7fb9c (patch) | |
| tree | bb93cabeed8dda74af879dda010df074e60ef6b1 | |
| parent | 8edb98f38b17e10d64f87b0eafd2612597896a82 (diff) | |
net: release dst entry while cache-hot for GSO case too
commit 068a2de57ddf4f472e32e7af868613c574ad1d88 upstream.
Non-GSO code drops dst entry for performance reasons, but
the same is missing for GSO code. Drop dst while cache-hot
for GSO case too.
Signed-off-by: Krishna Kumar <krkumar2@in.ibm.com>
Acked-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Andrey Vagin <avagin@openvz.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
| -rw-r--r-- | net/core/dev.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/net/core/dev.c b/net/core/dev.c index d04cd93f22b5..fd4c1e78154c 100644 --- a/net/core/dev.c +++ b/net/core/dev.c @@ -1747,6 +1747,14 @@ gso: skb->next = nskb->next; nskb->next = NULL; + + /* + * If device doesnt 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); + rc = ops->ndo_start_xmit(nskb, dev); if (unlikely(rc != NETDEV_TX_OK)) { nskb->next = skb->next; |