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skbuff: simplify sock_zerocopy_put

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All 'struct ubuf_info' users should have a callback defined
as of commit 0a4a060bb204 ("sock: fix zerocopy_success regression
with msg_zerocopy").

Remove the dead code path to consume_skb(), which makes
assumptions about how the structure was allocated.

Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Jonathan Lemon 2021-01-06 14:18:30 -08:00 committed by Jakub Kicinski
parent 424f481f06
commit d6adf1b103
1 changed files with 2 additions and 6 deletions
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8
net/core/skbuff.c
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@ -1245,12 +1245,8 @@ EXPORT_SYMBOL_GPL(sock_zerocopy_callback);
void sock_zerocopy_put(struct ubuf_info *uarg)
{
if (uarg && refcount_dec_and_test(&uarg->refcnt)) {
if (uarg->callback)
uarg->callback(uarg, uarg->zerocopy);
else
consume_skb(skb_from_uarg(uarg));
}
if (uarg && refcount_dec_and_test(&uarg->refcnt))
uarg->callback(uarg, uarg->zerocopy);
}
EXPORT_SYMBOL_GPL(sock_zerocopy_put);