Messages in this thread Patch in this message | | | From | xiaohui.xin@intel ... | Subject | [PATCH v13 06/16]Use callback to deal with skb_release_data() specially. | Date | Fri, 15 Oct 2010 17:12:07 +0800 |
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From: Xin Xiaohui <xiaohui.xin@intel.com>
If buffer is external, then use the callback to destruct buffers.
Signed-off-by: Xin Xiaohui <xiaohui.xin@intel.com> Signed-off-by: Zhao Yu <yzhao81new@gmail.com> Reviewed-by: Jeff Dike <jdike@linux.intel.com> --- net/core/skbuff.c | 8 ++++++++ 1 files changed, 8 insertions(+), 0 deletions(-)
diff --git a/net/core/skbuff.c b/net/core/skbuff.c index c83b421..5e6d69c 100644 --- a/net/core/skbuff.c +++ b/net/core/skbuff.c @@ -210,6 +210,7 @@ struct sk_buff *__alloc_skb(unsigned int size, gfp_t gfp_mask, /* make sure we initialize shinfo sequentially */ shinfo = skb_shinfo(skb); + shinfo->destructor_arg = NULL; memset(shinfo, 0, offsetof(struct skb_shared_info, dataref)); atomic_set(&shinfo->dataref, 1); @@ -343,6 +344,13 @@ static void skb_release_data(struct sk_buff *skb) if (skb_has_frags(skb)) skb_drop_fraglist(skb); + if (skb->dev && dev_is_mpassthru(skb->dev)) { + struct skb_ext_page *ext_page = + skb_shinfo(skb)->destructor_arg; + if (ext_page && ext_page->dtor) + ext_page->dtor(ext_page); + } + kfree(skb->head); } } -- 1.7.3
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