wireguard-go/conn, branch master

conn: don't enable GRO on Linux < 5.12

2025-05-21T23:43:39Z

Kernels below 5.12 are missing this: commit 98184612aca0a9ee42b8eb0262a49900ee9eef0d Author: Norman Maurer Date: Thu Apr 1 08:59:17 2021 net: udp: Add support for getsockopt(..., ..., UDP_GRO, ..., ...); Support for UDP_GRO was added in the past but the implementation for getsockopt was missed which did lead to an error when we tried to retrieve the setting for UDP_GRO. This patch adds the missing switch case for UDP_GRO Fixes: e20cf8d3f1f7 ("udp: implement GRO for plain UDP sockets.") Signed-off-by: Norman Maurer Reviewed-by: David Ahern Signed-off-by: David S. Miller That means we can't set the option and then read it back later. Given how buggy UDP_GRO is in general on odd kernels, just disable it on older kernels all together. Signed-off-by: Jason A. Donenfeld

global: replaced unused function params with _

2025-05-05T13:10:08Z

Signed-off-by: Jason A. Donenfeld

global: bump copyright notice

2025-05-05T13:05:35Z

Signed-off-by: Jason A. Donenfeld

conn: set unused OOB to zero length

2023-10-21T17:32:07Z

Otherwise in the event that we're using GSO without sticky sockets, we pass garbage OOB buffers to sendmmsg, making a EINVAL, when GSO doesn't set its header. Signed-off-by: Jason A. Donenfeld

conn: fix cmsg data padding calculation for gso

2023-10-21T17:06:38Z

Signed-off-by: Jason A. Donenfeld

conn: separate gso and sticky control

2023-10-21T16:44:01Z

Android wants GSO but not sticky. Signed-off-by: Jason A. Donenfeld

conn: harmonize GOOS checks between "linux" and "android"

2023-10-18T19:14:13Z

Otherwise GRO gets enabled on Android, but the conn doesn't use it, resulting in bundled packets being discarded. Signed-off-by: Jason A. Donenfeld

conn: simplify supportsUDPOffload

2023-10-18T19:02:52Z

This allows a kernel to support UDP_GRO while not supporting UDP_SEGMENT. Signed-off-by: Jason A. Donenfeld

conn, device: use UDP GSO and GRO on Linux

2023-10-10T13:07:36Z

StdNetBind probes for UDP GSO and GRO support at runtime. UDP GSO is dependent on checksum offload support on the egress netdev. UDP GSO will be disabled in the event sendmmsg() returns EIO, which is a strong signal that the egress netdev does not support checksum offload. The iperf3 results below demonstrate the effect of this commit between two Linux computers with i5-12400 CPUs. There is roughly ~13us of round trip latency between them. The first result is from commit 052af4a without UDP GSO or GRO. Starting Test: protocol: TCP, 1 streams, 131072 byte blocks [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 9.85 GBytes 8.46 Gbits/sec 1139 3.01 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 9.85 GBytes 8.46 Gbits/sec 1139 sender [ 5] 0.00-10.04 sec 9.85 GBytes 8.42 Gbits/sec receiver The second result is with UDP GSO and GRO. Starting Test: protocol: TCP, 1 streams, 131072 byte blocks [ ID] Interval Transfer Bitrate Retr Cwnd [ 5] 0.00-10.00 sec 12.3 GBytes 10.6 Gbits/sec 232 3.15 MBytes - - - - - - - - - - - - - - - - - - - - - - - - - Test Complete. Summary Results: [ ID] Interval Transfer Bitrate Retr [ 5] 0.00-10.00 sec 12.3 GBytes 10.6 Gbits/sec 232 sender [ 5] 0.00-10.04 sec 12.3 GBytes 10.6 Gbits/sec receiver Reviewed-by: Adrian Dewhurst Signed-off-by: Jordan Whited Signed-off-by: Jason A. Donenfeld

all: adjust build tags for wasip1/wasm

2023-07-04T13:54:42Z

Signed-off-by: Brad Fitzpatrick Signed-off-by: Jason A. Donenfeld