diff mbox series

[net-next,4/4] wireguard: device: support big tcp GSO

Message ID 20241117212030.629159-5-Jason@zx2c4.com (mailing list archive)
State New
Delegated to: Netdev Maintainers
Headers show
Series wireguard updates and fixes for 6.13 | expand

Checks

Context Check Description
netdev/series_format success Posting correctly formatted
netdev/tree_selection success Clearly marked for net-next
netdev/ynl success Generated files up to date; no warnings/errors; no diff in generated;
netdev/fixes_present success Fixes tag not required for -next series
netdev/header_inline success No static functions without inline keyword in header files
netdev/build_32bit success Errors and warnings before: 3 this patch: 3
netdev/build_tools success No tools touched, skip
netdev/cc_maintainers warning 3 maintainers not CCed: andrew+netdev@lunn.ch edumazet@google.com wireguard@lists.zx2c4.com
netdev/build_clang success Errors and warnings before: 3 this patch: 3
netdev/verify_signedoff success Signed-off-by tag matches author and committer
netdev/deprecated_api success None detected
netdev/check_selftest success No net selftest shell script
netdev/verify_fixes success No Fixes tag
netdev/build_allmodconfig_warn success Errors and warnings before: 4 this patch: 4
netdev/checkpatch success total: 0 errors, 0 warnings, 0 checks, 8 lines checked
netdev/build_clang_rust success No Rust files in patch. Skipping build
netdev/kdoc success Errors and warnings before: 0 this patch: 0
netdev/source_inline success Was 0 now: 0
netdev/contest pending net-next-2024-11-18--00-00 (tests: 0)

Commit Message

Jason A. Donenfeld Nov. 17, 2024, 9:20 p.m. UTC 
From: Daniel Borkmann <daniel@iogearbox.net>

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().
We've seen a 15% improvement in TCP stream performance.

Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: Jason A. Donenfeld <Jason@zx2c4.com>
---
 drivers/net/wireguard/device.c | 2 ++
 1 file changed, 2 insertions(+)
diff mbox series

Patch

diff --git a/drivers/net/wireguard/device.c b/drivers/net/wireguard/device.c
index a2ba71fbbed4..6cf173a008e7 100644
--- a/drivers/net/wireguard/device.c
+++ b/drivers/net/wireguard/device.c
@@ -302,6 +302,8 @@  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);
+
 	wg->dev = dev;
 }