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Message-Id: <20241004165518.120567-1-daniel@iogearbox.net>
Date: Fri, 4 Oct 2024 18:55:18 +0200
From: Daniel Borkmann <daniel@...earbox.net>
To: kuba@...nel.org
Cc: edumazet@...gle.com,
Jason@...c4.com,
aspsk@...valent.com,
m@...bda.lt,
netdev@...r.kernel.org,
wireguard@...ts.zx2c4.com
Subject: [PATCH net-next v2] wireguard: Wire-up big tcp support
Advertise GSO_MAX_SIZE as TSO max size in order support BIG TCP for wireguard.
This helps to improve wireguard performance a bit when enabled as it allows
wireguard to aggregate larger skbs in wg_packet_consume_data_done() via
napi_gro_receive(), but also allows the stack to build larger skbs on xmit
where the driver then segments them before encryption inside wg_xmit().
Signed-off-by: Daniel Borkmann <daniel@...earbox.net>
Cc: Jason A. Donenfeld <Jason@...c4.com>
Cc: Anton Protopopov <aspsk@...valent.com>
Cc: Martynas Pumputis <m@...bda.lt>
---
v2: fixed up my gitconfig and Cc's now
drivers/net/wireguard/device.c | 1 +
1 file changed, 1 insertion(+)
diff --git a/drivers/net/wireguard/device.c b/drivers/net/wireguard/device.c
index 45e9b908dbfb..79be517b2216 100644
--- a/drivers/net/wireguard/device.c
+++ b/drivers/net/wireguard/device.c
@@ -301,6 +301,7 @@ static void wg_setup(struct net_device *dev)
/* We need to keep the dst around in case of icmp replies. */
netif_keep_dst(dev);
+ netif_set_tso_max_size(dev, GSO_MAX_SIZE);
memset(wg, 0, sizeof(*wg));
wg->dev = dev;
--
2.43.0
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