This commit is contained in:
2026-03-24 15:39:02 +08:00
8 changed files with 155 additions and 38 deletions

View File

@@ -15,10 +15,11 @@ import (
)
const (
linuxTimestampControlBufferSize = 256 // 控制消息缓冲区。
linuxTXTimestampWaitTimeout = 250 * time.Millisecond // 等待 TX 时间戳的上限
linuxTXTimestampPollInterval = time.Millisecond // 轮询 errqueue 的间隔
linuxDataPollInterval = time.Millisecond // 轮询普通收发的间隔。
linuxTimestampControlBufferSize = 2048 // 控制消息缓冲区。
linuxSocketWriteBufferSize = 10 * 1024 * 1024 // 请求把 socket 发送缓冲区调到 10 MiB
linuxTXTimestampWaitTimeout = 5000 * time.Millisecond // 等待 TX 时间戳的上限
linuxTXTimestampPollInterval = time.Millisecond // 轮询 errqueue 的间隔。
linuxDataPollInterval = time.Millisecond // 轮询普通收发的间隔。
linuxSOTimestampingNew = 0x41
linuxSCMTimestampingNew = linuxSOTimestampingNew
@@ -88,6 +89,10 @@ func (c *TCPConn) initLinuxTimestamping() error {
return fmt.Errorf("transport: missing syscall conn")
}
if err := configureLinuxSocketWriteBuffer(rawConn); err != nil {
return fmt.Errorf("transport: configure socket write buffer: %w", err)
}
//socket是否可以成功打开 timestamping 取决于内核版本和配置,尝试多个 flag 组合直到成功或遇到非 EINVAL 错误。
if err := enableLinuxTimestamping(rawConn); err != nil {
return fmt.Errorf("transport: enable linux timestamping: %w", err)
@@ -97,6 +102,20 @@ func (c *TCPConn) initLinuxTimestamping() error {
return nil
}
// 设置 TCP缓冲区buffer size
func configureLinuxSocketWriteBuffer(rawConn syscall.RawConn) error {
var lastErr error
err := rawConn.Control(func(fd uintptr) {
lastErr = syscall.SetsockoptInt(int(fd), syscall.SOL_SOCKET, syscall.SO_SNDBUF, linuxSocketWriteBufferSize)
})
if err != nil {
return err
}
return lastErr
}
// 给 socket开权限打开TX software timestamping。
func enableLinuxTimestamping(rawConn syscall.RawConn) error {
flagCandidates := []int{ //不同linux版本可能支持不同的 flag 组合,尝试多个组合直到成功。

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@@ -182,7 +182,7 @@ func TestSelectTXTimestampEventsFallsBackToHighestObservedID(t *testing.T) {
func TestLinuxTimestampingDebugLoggerCapturesChunkAndErrqueueEvents(t *testing.T) {
clientConn, serverConn := newTCPPair(t)
setTCPWriteBuffer(t, clientConn, 4096)
setTCPWriteBuffer(t, clientConn, 10*1024*1024)
debugLogger := &recordingTXTimestampDebugLogger{}
senderLogger := &recordingLogger{}