diff options
Diffstat (limited to 'net')
| -rw-r--r-- | net/batching/conn_linux.go | 14 |
1 files changed, 10 insertions, 4 deletions
diff --git a/net/batching/conn_linux.go b/net/batching/conn_linux.go index bd7ac25be..2bb002995 100644 --- a/net/batching/conn_linux.go +++ b/net/batching/conn_linux.go @@ -20,6 +20,7 @@ import ( "golang.org/x/net/ipv4" "golang.org/x/net/ipv6" "golang.org/x/sys/unix" + "tailscale.com/envknob" "tailscale.com/hostinfo" "tailscale.com/net/neterror" "tailscale.com/net/packet" @@ -328,10 +329,15 @@ func tryEnableUDPOffload(pconn nettype.PacketConn) (hasTX bool, hasRX bool) { return } err = rc.Control(func(fd uintptr) { - _, errSyscall := syscall.GetsockoptInt(int(fd), unix.IPPROTO_UDP, unix.UDP_SEGMENT) - hasTX = errSyscall == nil - errSyscall = syscall.SetsockoptInt(int(fd), unix.IPPROTO_UDP, unix.UDP_GRO, 1) - hasRX = errSyscall == nil + var errSyscall error + if !envknob.Bool("TS_DEBUG_DISABLE_UDP_GSO") { + _, errSyscall = syscall.GetsockoptInt(int(fd), unix.IPPROTO_UDP, unix.UDP_SEGMENT) + hasTX = errSyscall == nil + } + if !envknob.Bool("TS_DEBUG_DISABLE_UDP_GRO") { + errSyscall = syscall.SetsockoptInt(int(fd), unix.IPPROTO_UDP, unix.UDP_GRO, 1) + hasRX = errSyscall == nil + } }) if err != nil { return false, false |