TUN-5547: Bump golang x/net package to fix http2 transport bugs

vendor/golang.org/x/net/http2/server.go

@@ -719,7 +719,15 @@ func (sc *serverConn) canonicalHeader(v string) string {
 		sc.canonHeader = make(map[string]string)
 	}
 	cv = http.CanonicalHeaderKey(v)
-	sc.canonHeader[v] = cv
+	// maxCachedCanonicalHeaders is an arbitrarily-chosen limit on the number of
+	// entries in the canonHeader cache. This should be larger than the number
+	// of unique, uncommon header keys likely to be sent by the peer, while not
+	// so high as to permit unreasonable memory usage if the peer sends an unbounded
+	// number of unique header keys.
+	const maxCachedCanonicalHeaders = 32
+	if len(sc.canonHeader) < maxCachedCanonicalHeaders {
+		sc.canonHeader[v] = cv
+	}
 	return cv
 }
 

vendor/golang.org/x/net/http2/transport.go

@@ -1124,36 +1124,49 @@ func (cc *ClientConn) RoundTrip(req *http.Request) (*http.Response, error) {
 		}
 	}
 
+	handleResponseHeaders := func() (*http.Response, error) {
+		res := cs.res
+		if res.StatusCode > 299 {
+			// On error or status code 3xx, 4xx, 5xx, etc abort any
+			// ongoing write, assuming that the server doesn't care
+			// about our request body. If the server replied with 1xx or
+			// 2xx, however, then assume the server DOES potentially
+			// want our body (e.g. full-duplex streaming:
+			// golang.org/issue/13444). If it turns out the server
+			// doesn't, they'll RST_STREAM us soon enough. This is a
+			// heuristic to avoid adding knobs to Transport. Hopefully
+			// we can keep it.
+			cs.abortRequestBodyWrite()
+		}
+		res.Request = req
+		res.TLS = cc.tlsState
+		if res.Body == noBody && actualContentLength(req) == 0 {
+			// If there isn't a request or response body still being
+			// written, then wait for the stream to be closed before
+			// RoundTrip returns.
+			if err := waitDone(); err != nil {
+				return nil, err
+			}
+		}
+		return res, nil
+	}
+
 	for {
 		select {
 		case <-cs.respHeaderRecv:
-			res := cs.res
-			if res.StatusCode > 299 {
-				// On error or status code 3xx, 4xx, 5xx, etc abort any
-				// ongoing write, assuming that the server doesn't care
-				// about our request body. If the server replied with 1xx or
-				// 2xx, however, then assume the server DOES potentially
-				// want our body (e.g. full-duplex streaming:
-				// golang.org/issue/13444). If it turns out the server
-				// doesn't, they'll RST_STREAM us soon enough. This is a
-				// heuristic to avoid adding knobs to Transport. Hopefully
-				// we can keep it.
-				cs.abortRequestBodyWrite()
-			}
-			res.Request = req
-			res.TLS = cc.tlsState
-			if res.Body == noBody && actualContentLength(req) == 0 {
-				// If there isn't a request or response body still being
-				// written, then wait for the stream to be closed before
-				// RoundTrip returns.
-				if err := waitDone(); err != nil {
-					return nil, err
-				}
-			}
-			return res, nil
+			return handleResponseHeaders()
 		case <-cs.abort:
-			waitDone()
-			return nil, cs.abortErr
+			select {
+			case <-cs.respHeaderRecv:
+				// If both cs.respHeaderRecv and cs.abort are signaling,
+				// pick respHeaderRecv. The server probably wrote the
+				// response and immediately reset the stream.
+				// golang.org/issue/49645
+				return handleResponseHeaders()
+			default:
+				waitDone()
+				return nil, cs.abortErr
+			}
 		case <-ctx.Done():
 			err := ctx.Err()
 			cs.abortStream(err)
@@ -1213,6 +1226,9 @@ func (cs *clientStream) writeRequest(req *http.Request) (err error) {
 		return err
 	}
 	cc.addStreamLocked(cs) // assigns stream ID
+	if isConnectionCloseRequest(req) {
+		cc.doNotReuse = true
+	}
 	cc.mu.Unlock()
 
 	// TODO(bradfitz): this is a copy of the logic in net/http. Unify somewhere?
@@ -1236,12 +1252,12 @@ func (cs *clientStream) writeRequest(req *http.Request) (err error) {
 	}
 
 	continueTimeout := cc.t.expectContinueTimeout()
-	if continueTimeout != 0 &&
-		!httpguts.HeaderValuesContainsToken(
-			req.Header["Expect"],
-			"100-continue") {
-		continueTimeout = 0
-		cs.on100 = make(chan struct{}, 1)
+	if continueTimeout != 0 {
+		if !httpguts.HeaderValuesContainsToken(req.Header["Expect"], "100-continue") {
+			continueTimeout = 0
+		} else {
+			cs.on100 = make(chan struct{}, 1)
+		}
 	}
 
 	// Past this point (where we send request headers), it is possible for
@@ -1310,6 +1326,7 @@ func (cs *clientStream) writeRequest(req *http.Request) (err error) {
 		case <-respHeaderTimer:
 			return errTimeout
 		case <-respHeaderRecv:
+			respHeaderRecv = nil
 			respHeaderTimer = nil // keep waiting for END_STREAM
 		case <-cs.abort:
 			return cs.abortErr
@@ -2313,7 +2330,7 @@ func (rl *clientConnReadLoop) handleResponse(cs *clientStream, f *MetaHeadersFra
 	cs.bytesRemain = res.ContentLength
 	res.Body = transportResponseBody{cs}
 
-	if cs.requestedGzip && res.Header.Get("Content-Encoding") == "gzip" {
+	if cs.requestedGzip && asciiEqualFold(res.Header.Get("Content-Encoding"), "gzip") {
 		res.Header.Del("Content-Encoding")
 		res.Header.Del("Content-Length")
 		res.ContentLength = -1
@@ -2452,7 +2469,10 @@ func (b transportResponseBody) Close() error {
 	select {
 	case <-cs.donec:
 	case <-cs.ctx.Done():
-		return cs.ctx.Err()
+		// See golang/go#49366: The net/http package can cancel the
+		// request context after the response body is fully read.
+		// Don't treat this as an error.
+		return nil
 	case <-cs.reqCancel:
 		return errRequestCanceled
 	}

vendor/golang.org/x/net/http2/writesched.go

@@ -32,7 +32,8 @@ type WriteScheduler interface {
 
 	// Pop dequeues the next frame to write. Returns false if no frames can
 	// be written. Frames with a given wr.StreamID() are Pop'd in the same
-	// order they are Push'd. No frames should be discarded except by CloseStream.
+	// order they are Push'd, except RST_STREAM frames. No frames should be
+	// discarded except by CloseStream.
 	Pop() (wr FrameWriteRequest, ok bool)
 }
 
@@ -52,6 +53,7 @@ type FrameWriteRequest struct {
 
 	// stream is the stream on which this frame will be written.
 	// nil for non-stream frames like PING and SETTINGS.
+	// nil for RST_STREAM streams, which use the StreamError.StreamID field instead.
 	stream *stream
 
 	// done, if non-nil, must be a buffered channel with space for

vendor/golang.org/x/net/http2/writesched_random.go

@@ -45,11 +45,11 @@ func (ws *randomWriteScheduler) AdjustStream(streamID uint32, priority PriorityP
 }
 
 func (ws *randomWriteScheduler) Push(wr FrameWriteRequest) {
-	id := wr.StreamID()
-	if id == 0 {
+	if wr.isControl() {
 		ws.zero.push(wr)
 		return
 	}
+	id := wr.StreamID()
 	q, ok := ws.sq[id]
 	if !ok {
 		q = ws.queuePool.get()
@@ -59,7 +59,7 @@ func (ws *randomWriteScheduler) Push(wr FrameWriteRequest) {
 }
 
 func (ws *randomWriteScheduler) Pop() (FrameWriteRequest, bool) {
-	// Control frames first.
+	// Control and RST_STREAM frames first.
 	if !ws.zero.empty() {
 		return ws.zero.shift(), true
 	}

vendor/golang.org/x/net/internal/socket/cmsghdr_linux_64bit.go

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build (arm64 || amd64 || ppc64 || ppc64le || mips64 || mips64le || riscv64 || s390x) && linux
-// +build arm64 amd64 ppc64 ppc64le mips64 mips64le riscv64 s390x
+//go:build (arm64 || amd64 || loong64 || ppc64 || ppc64le || mips64 || mips64le || riscv64 || s390x) && linux
+// +build arm64 amd64 loong64 ppc64 ppc64le mips64 mips64le riscv64 s390x
 // +build linux
 
 package socket

vendor/golang.org/x/net/internal/socket/empty.s

@@ -2,6 +2,7 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
+//go:build darwin && go1.12
 // +build darwin,go1.12
 
 // This exists solely so we can linkname in symbols from syscall.

vendor/golang.org/x/net/internal/socket/iovec_64bit.go

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build (arm64 || amd64 || ppc64 || ppc64le || mips64 || mips64le || riscv64 || s390x) && (aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || zos)
-// +build arm64 amd64 ppc64 ppc64le mips64 mips64le riscv64 s390x
+//go:build (arm64 || amd64 || loong64 || ppc64 || ppc64le || mips64 || mips64le || riscv64 || s390x) && (aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || zos)
+// +build arm64 amd64 loong64 ppc64 ppc64le mips64 mips64le riscv64 s390x
 // +build aix darwin dragonfly freebsd linux netbsd openbsd zos
 
 package socket

vendor/golang.org/x/net/internal/socket/msghdr_linux_64bit.go

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build (arm64 || amd64 || ppc64 || ppc64le || mips64 || mips64le || riscv64 || s390x) && linux
-// +build arm64 amd64 ppc64 ppc64le mips64 mips64le riscv64 s390x
+//go:build (arm64 || amd64 || loong64 || ppc64 || ppc64le || mips64 || mips64le || riscv64 || s390x) && linux
+// +build arm64 amd64 loong64 ppc64 ppc64le mips64 mips64le riscv64 s390x
 // +build linux
 
 package socket

vendor/golang.org/x/net/internal/socket/sys_bsd.go

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build aix || darwin || dragonfly || freebsd || openbsd
-// +build aix darwin dragonfly freebsd openbsd
+//go:build aix || darwin || dragonfly || freebsd || openbsd || solaris
+// +build aix darwin dragonfly freebsd openbsd solaris
 
 package socket
 

vendor/golang.org/x/net/internal/socket/sys_linkname.go

@@ -1,43 +0,0 @@
-// Copyright 2018 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-//go:build aix || (go1.12 && darwin)
-// +build aix go1.12,darwin
-
-package socket
-
-import (
-	"syscall"
-	"unsafe"
-)
-
-//go:linkname syscall_getsockopt syscall.getsockopt
-func syscall_getsockopt(s int, level int, name int, val unsafe.Pointer, vallen *uint32) error
-
-func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
-	l := uint32(len(b))
-	err := syscall_getsockopt(int(s), level, name, unsafe.Pointer(&b[0]), &l)
-	return int(l), err
-}
-
-//go:linkname syscall_setsockopt syscall.setsockopt
-func syscall_setsockopt(s int, level int, name int, val unsafe.Pointer, vallen uintptr) error
-
-func setsockopt(s uintptr, level, name int, b []byte) error {
-	return syscall_setsockopt(int(s), level, name, unsafe.Pointer(&b[0]), uintptr(len(b)))
-}
-
-//go:linkname syscall_recvmsg syscall.recvmsg
-func syscall_recvmsg(s int, msg *syscall.Msghdr, flags int) (n int, err error)
-
-func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
-	return syscall_recvmsg(int(s), (*syscall.Msghdr)(unsafe.Pointer(h)), flags)
-}
-
-//go:linkname syscall_sendmsg syscall.sendmsg
-func syscall_sendmsg(s int, msg *syscall.Msghdr, flags int) (n int, err error)
-
-func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
-	return syscall_sendmsg(int(s), (*syscall.Msghdr)(unsafe.Pointer(h)), flags)
-}

vendor/golang.org/x/net/internal/socket/sys_linux_386.go

@@ -10,38 +10,13 @@ import (
 )
 
 const (
-	sysSETSOCKOPT = 0xe
-	sysGETSOCKOPT = 0xf
-	sysSENDMSG    = 0x10
-	sysRECVMSG    = 0x11
-	sysRECVMMSG   = 0x13
-	sysSENDMMSG   = 0x14
+	sysRECVMMSG = 0x13
+	sysSENDMMSG = 0x14
 )
 
 func socketcall(call, a0, a1, a2, a3, a4, a5 uintptr) (uintptr, syscall.Errno)
 func rawsocketcall(call, a0, a1, a2, a3, a4, a5 uintptr) (uintptr, syscall.Errno)
 
-func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
-	l := uint32(len(b))
-	_, errno := socketcall(sysGETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0)
-	return int(l), errnoErr(errno)
-}
-
-func setsockopt(s uintptr, level, name int, b []byte) error {
-	_, errno := socketcall(sysSETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0)
-	return errnoErr(errno)
-}
-
-func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
-	n, errno := socketcall(sysRECVMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
-	return int(n), errnoErr(errno)
-}
-
-func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
-	n, errno := socketcall(sysSENDMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
-	return int(n), errnoErr(errno)
-}
-
 func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
 	n, errno := socketcall(sysRECVMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
 	return int(n), errnoErr(errno)

vendor/golang.org/x/net/internal/socket/sys_linux_loong64.go

@@ -0,0 +1,13 @@
+// Copyright 2021 The Go Authors. All rights reserved.
+// Use of this source code is governed by a BSD-style
+// license that can be found in the LICENSE file.
+
+//go:build loong64
+// +build loong64
+
+package socket
+
+const (
+	sysRECVMMSG = 0xf3
+	sysSENDMMSG = 0x10d
+)

vendor/golang.org/x/net/internal/socket/sys_linux_s390x.go

@@ -10,38 +10,13 @@ import (
 )
 
 const (
-	sysSETSOCKOPT = 0xe
-	sysGETSOCKOPT = 0xf
-	sysSENDMSG    = 0x10
-	sysRECVMSG    = 0x11
-	sysRECVMMSG   = 0x13
-	sysSENDMMSG   = 0x14
+	sysRECVMMSG = 0x13
+	sysSENDMMSG = 0x14
 )
 
 func socketcall(call, a0, a1, a2, a3, a4, a5 uintptr) (uintptr, syscall.Errno)
 func rawsocketcall(call, a0, a1, a2, a3, a4, a5 uintptr) (uintptr, syscall.Errno)
 
-func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
-	l := uint32(len(b))
-	_, errno := socketcall(sysGETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0)
-	return int(l), errnoErr(errno)
-}
-
-func setsockopt(s uintptr, level, name int, b []byte) error {
-	_, errno := socketcall(sysSETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0)
-	return errnoErr(errno)
-}
-
-func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
-	n, errno := socketcall(sysRECVMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
-	return int(n), errnoErr(errno)
-}
-
-func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
-	n, errno := socketcall(sysSENDMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
-	return int(n), errnoErr(errno)
-}
-
 func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
 	n, errno := socketcall(sysRECVMMSG, s, uintptr(unsafe.Pointer(&hs[0])), uintptr(len(hs)), uintptr(flags), 0, 0)
 	return int(n), errnoErr(errno)

vendor/golang.org/x/net/internal/socket/sys_solaris.go

@@ -1,59 +0,0 @@
-// Copyright 2017 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-package socket
-
-import (
-	"syscall"
-	"unsafe"
-)
-
-//go:cgo_import_dynamic libc___xnet_getsockopt __xnet_getsockopt "libsocket.so"
-//go:cgo_import_dynamic libc_setsockopt setsockopt "libsocket.so"
-//go:cgo_import_dynamic libc___xnet_recvmsg __xnet_recvmsg "libsocket.so"
-//go:cgo_import_dynamic libc___xnet_sendmsg __xnet_sendmsg "libsocket.so"
-
-//go:linkname procGetsockopt libc___xnet_getsockopt
-//go:linkname procSetsockopt libc_setsockopt
-//go:linkname procRecvmsg libc___xnet_recvmsg
-//go:linkname procSendmsg libc___xnet_sendmsg
-
-var (
-	procGetsockopt uintptr
-	procSetsockopt uintptr
-	procRecvmsg    uintptr
-	procSendmsg    uintptr
-)
-
-func sysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (uintptr, uintptr, syscall.Errno)
-func rawSysvicall6(trap, nargs, a1, a2, a3, a4, a5, a6 uintptr) (uintptr, uintptr, syscall.Errno)
-
-func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
-	l := uint32(len(b))
-	_, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procGetsockopt)), 5, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0)
-	return int(l), errnoErr(errno)
-}
-
-func setsockopt(s uintptr, level, name int, b []byte) error {
-	_, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procSetsockopt)), 5, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0)
-	return errnoErr(errno)
-}
-
-func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
-	n, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procRecvmsg)), 3, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
-	return int(n), errnoErr(errno)
-}
-
-func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
-	n, _, errno := sysvicall6(uintptr(unsafe.Pointer(&procSendmsg)), 3, s, uintptr(unsafe.Pointer(h)), uintptr(flags), 0, 0, 0)
-	return int(n), errnoErr(errno)
-}
-
-func recvmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
-	return 0, errNotImplemented
-}
-
-func sendmmsg(s uintptr, hs []mmsghdr, flags int) (int, error) {
-	return 0, errNotImplemented
-}

vendor/golang.org/x/net/internal/socket/sys_solaris_amd64.s

@@ -1,11 +0,0 @@
-// Copyright 2016 The Go Authors. All rights reserved.
-// Use of this source code is governed by a BSD-style
-// license that can be found in the LICENSE file.
-
-#include "textflag.h"
-
-TEXT	·sysvicall6(SB),NOSPLIT,$0-88
-	JMP	syscall·sysvicall6(SB)
-
-TEXT	·rawSysvicall6(SB),NOSPLIT,$0-88
-	JMP	syscall·rawSysvicall6(SB)

vendor/golang.org/x/net/internal/socket/sys_unix.go

@@ -2,8 +2,8 @@
 // Use of this source code is governed by a BSD-style
 // license that can be found in the LICENSE file.
 
-//go:build dragonfly || freebsd || (linux && !s390x && !386) || netbsd || openbsd
-// +build dragonfly freebsd linux,!s390x,!386 netbsd openbsd
+//go:build aix || darwin || dragonfly || freebsd || linux || netbsd || openbsd || solaris
+// +build aix darwin dragonfly freebsd linux netbsd openbsd solaris
 
 package socket
 
@@ -12,23 +12,32 @@ import (
 	"unsafe"
 )
 
+//go:linkname syscall_getsockopt syscall.getsockopt
+func syscall_getsockopt(s, level, name int, val unsafe.Pointer, vallen *uint32) error
+
+//go:linkname syscall_setsockopt syscall.setsockopt
+func syscall_setsockopt(s, level, name int, val unsafe.Pointer, vallen uintptr) error
+
+//go:linkname syscall_recvmsg syscall.recvmsg
+func syscall_recvmsg(s int, msg *syscall.Msghdr, flags int) (int, error)
+
+//go:linkname syscall_sendmsg syscall.sendmsg
+func syscall_sendmsg(s int, msg *syscall.Msghdr, flags int) (int, error)
+
 func getsockopt(s uintptr, level, name int, b []byte) (int, error) {
 	l := uint32(len(b))
-	_, _, errno := syscall.Syscall6(syscall.SYS_GETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(unsafe.Pointer(&l)), 0)
-	return int(l), errnoErr(errno)
+	err := syscall_getsockopt(int(s), level, name, unsafe.Pointer(&b[0]), &l)
+	return int(l), err
 }
 
 func setsockopt(s uintptr, level, name int, b []byte) error {
-	_, _, errno := syscall.Syscall6(syscall.SYS_SETSOCKOPT, s, uintptr(level), uintptr(name), uintptr(unsafe.Pointer(&b[0])), uintptr(len(b)), 0)
-	return errnoErr(errno)
+	return syscall_setsockopt(int(s), level, name, unsafe.Pointer(&b[0]), uintptr(len(b)))
 }
 
 func recvmsg(s uintptr, h *msghdr, flags int) (int, error) {
-	n, _, errno := syscall.Syscall(syscall.SYS_RECVMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags))
-	return int(n), errnoErr(errno)
+	return syscall_recvmsg(int(s), (*syscall.Msghdr)(unsafe.Pointer(h)), flags)
 }
 
 func sendmsg(s uintptr, h *msghdr, flags int) (int, error) {
-	n, _, errno := syscall.Syscall(syscall.SYS_SENDMSG, s, uintptr(unsafe.Pointer(h)), uintptr(flags))
-	return int(n), errnoErr(errno)
+	return syscall_sendmsg(int(s), (*syscall.Msghdr)(unsafe.Pointer(h)), flags)
 }

vendor/golang.org/x/net/internal/socket/zsys_linux_loong64.go

@@ -0,0 +1,40 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+//go:build loong64
+// +build loong64
+
+package socket
+
+type iovec struct {
+	Base *byte
+	Len  uint64
+}
+
+type msghdr struct {
+	Name       *byte
+	Namelen    uint32
+	Iov        *iovec
+	Iovlen     uint64
+	Control    *byte
+	Controllen uint64
+	Flags      int32
+	Pad_cgo_0  [4]byte
+}
+
+type mmsghdr struct {
+	Hdr       msghdr
+	Len       uint32
+	Pad_cgo_0 [4]byte
+}
+
+type cmsghdr struct {
+	Len   uint64
+	Level int32
+	Type  int32
+}
+
+const (
+	sizeofIovec  = 0x10
+	sizeofMsghdr = 0x38
+)

vendor/golang.org/x/net/ipv4/zsys_linux_loong64.go

@@ -0,0 +1,77 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+//go:build loong64
+// +build loong64
+
+package ipv4
+
+const (
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet          = 0x10
+	sizeofInetPktinfo           = 0xc
+	sizeofSockExtendedErr       = 0x10
+
+	sizeofIPMreq         = 0x8
+	sizeofIPMreqSource   = 0xc
+	sizeofGroupReq       = 0x88
+	sizeofGroupSourceReq = 0x108
+
+	sizeofICMPFilter = 0x4
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet struct {
+	Family uint16
+	Port   uint16
+	Addr   [4]byte /* in_addr */
+	X__pad [8]uint8
+}
+
+type inetPktinfo struct {
+	Ifindex  int32
+	Spec_dst [4]byte /* in_addr */
+	Addr     [4]byte /* in_addr */
+}
+
+type sockExtendedErr struct {
+	Errno  uint32
+	Origin uint8
+	Type   uint8
+	Code   uint8
+	Pad    uint8
+	Info   uint32
+	Data   uint32
+}
+
+type ipMreq struct {
+	Multiaddr [4]byte /* in_addr */
+	Interface [4]byte /* in_addr */
+}
+
+type ipMreqSource struct {
+	Multiaddr  uint32
+	Interface  uint32
+	Sourceaddr uint32
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpFilter struct {
+	Data uint32
+}

vendor/golang.org/x/net/ipv6/zsys_linux_loong64.go

@@ -0,0 +1,77 @@
+// Code generated by cmd/cgo -godefs; DO NOT EDIT.
+// cgo -godefs defs_linux.go
+
+//go:build loong64
+// +build loong64
+
+package ipv6
+
+const (
+	sizeofKernelSockaddrStorage = 0x80
+	sizeofSockaddrInet6         = 0x1c
+	sizeofInet6Pktinfo          = 0x14
+	sizeofIPv6Mtuinfo           = 0x20
+	sizeofIPv6FlowlabelReq      = 0x20
+
+	sizeofIPv6Mreq       = 0x14
+	sizeofGroupReq       = 0x88
+	sizeofGroupSourceReq = 0x108
+
+	sizeofICMPv6Filter = 0x20
+)
+
+type kernelSockaddrStorage struct {
+	Family  uint16
+	X__data [126]int8
+}
+
+type sockaddrInet6 struct {
+	Family   uint16
+	Port     uint16
+	Flowinfo uint32
+	Addr     [16]byte /* in6_addr */
+	Scope_id uint32
+}
+
+type inet6Pktinfo struct {
+	Addr    [16]byte /* in6_addr */
+	Ifindex int32
+}
+
+type ipv6Mtuinfo struct {
+	Addr sockaddrInet6
+	Mtu  uint32
+}
+
+type ipv6FlowlabelReq struct {
+	Dst        [16]byte /* in6_addr */
+	Label      uint32
+	Action     uint8
+	Share      uint8
+	Flags      uint16
+	Expires    uint16
+	Linger     uint16
+	X__flr_pad uint32
+}
+
+type ipv6Mreq struct {
+	Multiaddr [16]byte /* in6_addr */
+	Ifindex   int32
+}
+
+type groupReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+}
+
+type groupSourceReq struct {
+	Interface uint32
+	Pad_cgo_0 [4]byte
+	Group     kernelSockaddrStorage
+	Source    kernelSockaddrStorage
+}
+
+type icmpv6Filter struct {
+	Data [8]uint32
+}