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skbuff: Call skb_zcopy_clear() before unref'ing fragments

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RX zerocopy fragment pages which are not allocated from the
system page pool require special handling.  Give the callback
in skb_zcopy_clear() a chance to process them first.

Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jonathan Lemon 2021-01-06 14:18:36 -08:00 committed by Jakub Kicinski
parent 236a6b1cd5
commit 70c4316749
1 changed files with 2 additions and 1 deletions
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3
net/core/skbuff.c
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@ -605,13 +605,14 @@ static void skb_release_data(struct sk_buff *skb)
&shinfo->dataref))
return;
skb_zcopy_clear(skb, true);
for (i = 0; i < shinfo->nr_frags; i++)
__skb_frag_unref(&shinfo->frags[i]);
if (shinfo->frag_list)
kfree_skb_list(shinfo->frag_list);
skb_zcopy_clear(skb, true);
skb_free_head(skb);
}