diff options
| author | Jason A. Donenfeld <Jason@zx2c4.com> | 2023-07-03 04:27:04 +0300 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@linuxfoundation.org> | 2023-07-19 17:22:17 +0300 |
| commit | 561aaadf0d07ce0503a3ec8e684004345be5c93f (patch) | |
| tree | 8eb6e2ce9e8f905e092ed19ae6564fc31386e99c /drivers/net/wireguard/send.c | |
| parent | 40f83dd66a823400d8592e3b71e190e3ad978eb5 (diff) | |
| download | linux-561aaadf0d07ce0503a3ec8e684004345be5c93f.tar.xz | |
wireguard: queueing: use saner cpu selection wrapping
commit 7387943fa35516f6f8017a3b0e9ce48a3bef9faa upstream.
Using `% nr_cpumask_bits` is slow and complicated, and not totally
robust toward dynamic changes to CPU topologies. Rather than storing the
next CPU in the round-robin, just store the last one, and also return
that value. This simplifies the loop drastically into a much more common
pattern.
Fixes: e7096c131e51 ("net: WireGuard secure network tunnel")
Cc: stable@vger.kernel.org
Reported-by: Linus Torvalds <torvalds@linux-foundation.org>
Tested-by: Manuel Leiner <manuel.leiner@gmx.de>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
Diffstat (limited to 'drivers/net/wireguard/send.c')
| -rw-r--r-- | drivers/net/wireguard/send.c | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/drivers/net/wireguard/send.c b/drivers/net/wireguard/send.c index 5368f7c35b4b..95c853b59e1d 100644 --- a/drivers/net/wireguard/send.c +++ b/drivers/net/wireguard/send.c @@ -318,7 +318,7 @@ static void wg_packet_create_data(struct wg_peer *peer, struct sk_buff *first) goto err; ret = wg_queue_enqueue_per_device_and_peer(&wg->encrypt_queue, &peer->tx_queue, first, - wg->packet_crypt_wq, &wg->encrypt_queue.last_cpu); + wg->packet_crypt_wq); if (unlikely(ret == -EPIPE)) wg_queue_enqueue_per_peer_tx(first, PACKET_STATE_DEAD); err: |