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Date: Sat, 25 Sep 2010 12:27:27 +0800 From: xiaohui.xin@...el.com To: netdev@...r.kernel.org, kvm@...r.kernel.org, linux-kernel@...r.kernel.org, mingo@...e.hu, davem@...emloft.net, herbert@...dor.hengli.com.au, jdike@...ux.intel.com Cc: Xin Xiaohui <xiaohui.xin@...el.com> Subject: [PATCH v11 09/17] Don't do skb recycle, if device use external buffer. From: Xin Xiaohui <xiaohui.xin@...el.com> Signed-off-by: Xin Xiaohui <xiaohui.xin@...el.com> Signed-off-by: Zhao Yu <yzhao81new@...il.com> Reviewed-by: Jeff Dike <jdike@...ux.intel.com> --- net/core/skbuff.c | 6 ++++++ 1 files changed, 6 insertions(+), 0 deletions(-) diff --git a/net/core/skbuff.c b/net/core/skbuff.c index bbf4707..9b156bb 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -565,6 +565,12 @@ int skb_recycle_check(struct sk_buff *skb, int skb_size) if (skb_shared(skb) || skb_cloned(skb)) return 0; + /* if the device wants to do mediate passthru, the skb may + * get external buffer, so don't recycle + */ + if (dev_is_mpassthru(skb->dev)) + return 0; + skb_release_head_state(skb); shinfo = skb_shinfo(skb); atomic_set(&shinfo->dataref, 1); -- 1.7.3 -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
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