moonjuice/kernel_arpi
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

skbuff: Push status and refcounts into sock_zerocopy_callback

Browse Source 
Before this change, the caller of sock_zerocopy_callback would
need to save the zerocopy status, decrement and check the refcount,
and then call the callback function - the callback was only invoked
when the refcount reached zero.

Now, the caller just passes the status into the callback function,
which saves the status and handles its own refcounts.

This makes the behavior of the sock_zerocopy_callback identical
to the tpacket and vhost callbacks.

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 14:18:31 -08:00
committed by Jakub Kicinski
parent d6adf1b103
commit 75518851a2
2 changed files with 11 additions and 6 deletions
Download Patch File Download Diff File Expand all files Collapse all files

3
include/linux/skbuff.h
View File

@@ -1479,9 +1479,6 @@ static inline void skb_zcopy_clear(struct sk_buff *skb, bool zerocopy)
if (uarg) {
if (skb_zcopy_is_nouarg(skb)) {
/* no notification callback */
} else if (uarg->callback == sock_zerocopy_callback) {
uarg->zerocopy = uarg->zerocopy && zerocopy;
sock_zerocopy_put(uarg);
} else {
uarg->callback(uarg, zerocopy);
}