snapshot: sagernet/gvisor v0.0.0-20250811.0-sing-box-mod.1

Содержимое пина, зафиксированного в go.mod sing-box-lx, одним коммитом
без истории. Полная история SagerNet/gvisor — 1.45 ГБ и клонируется в
каждой CI-джобе; наша дельта — одна вставка в одну функцию, история для
неё не нужна.

Module path github.com/sagernet/gvisor сохранён намеренно: на него
опирается replace-директива суперпроекта.

Патч поверх — отдельным коммитом, чтобы дельта читалась одним git show
и переносилась на новый пин копированием.

SPECS/TASKS/048-GVISOR_HANDSHAKE_NIL_CRASH

pkg/tcpip/stack/nic_stats.go

@@ -0,0 +1,84 @@
+// Copyright 2021 The gVisor Authors.
+//
+// Licensed under the Apache License, Version 2.0 (the "License");
+// you may not use this file except in compliance with the License.
+// You may obtain a copy of the License at
+//
+//     http://www.apache.org/licenses/LICENSE-2.0
+//
+// Unless required by applicable law or agreed to in writing, software
+// distributed under the License is distributed on an "AS IS" BASIS,
+// WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+// See the License for the specific language governing permissions and
+// limitations under the License.
+
+package stack
+
+import (
+	"github.com/sagernet/gvisor/pkg/tcpip"
+)
+
+// +stateify savable
+type sharedStats struct {
+	local tcpip.NICStats
+	multiCounterNICStats
+}
+
+// LINT.IfChange(multiCounterNICPacketStats)
+
+// +stateify savable
+type multiCounterNICPacketStats struct {
+	packets tcpip.MultiCounterStat
+	bytes   tcpip.MultiCounterStat
+}
+
+func (m *multiCounterNICPacketStats) init(a, b *tcpip.NICPacketStats) {
+	m.packets.Init(a.Packets, b.Packets)
+	m.bytes.Init(a.Bytes, b.Bytes)
+}
+
+// LINT.ThenChange(../tcpip.go:NICPacketStats)
+
+// LINT.IfChange(multiCounterNICNeighborStats)
+
+// +stateify savable
+type multiCounterNICNeighborStats struct {
+	unreachableEntryLookups                    tcpip.MultiCounterStat
+	droppedConfirmationForNoninitiatedNeighbor tcpip.MultiCounterStat
+	droppedInvalidLinkAddressConfirmations     tcpip.MultiCounterStat
+}
+
+func (m *multiCounterNICNeighborStats) init(a, b *tcpip.NICNeighborStats) {
+	m.unreachableEntryLookups.Init(a.UnreachableEntryLookups, b.UnreachableEntryLookups)
+	m.droppedConfirmationForNoninitiatedNeighbor.Init(a.DroppedConfirmationForNoninitiatedNeighbor, b.DroppedConfirmationForNoninitiatedNeighbor)
+	m.droppedInvalidLinkAddressConfirmations.Init(a.DroppedInvalidLinkAddressConfirmations, b.DroppedInvalidLinkAddressConfirmations)
+}
+
+// LINT.ThenChange(../tcpip.go:NICNeighborStats)
+
+// LINT.IfChange(multiCounterNICStats)
+
+// +stateify savable
+type multiCounterNICStats struct {
+	unknownL3ProtocolRcvdPacketCounts tcpip.MultiIntegralStatCounterMap
+	unknownL4ProtocolRcvdPacketCounts tcpip.MultiIntegralStatCounterMap
+	malformedL4RcvdPackets            tcpip.MultiCounterStat
+	tx                                multiCounterNICPacketStats
+	txPacketsDroppedNoBufferSpace     tcpip.MultiCounterStat
+	rx                                multiCounterNICPacketStats
+	disabledRx                        multiCounterNICPacketStats
+	neighbor                          multiCounterNICNeighborStats
+}
+
+func (m *multiCounterNICStats) init(a, b *tcpip.NICStats) {
+	m.unknownL3ProtocolRcvdPacketCounts.Init(a.UnknownL3ProtocolRcvdPacketCounts, b.UnknownL3ProtocolRcvdPacketCounts)
+	m.unknownL4ProtocolRcvdPacketCounts.Init(a.UnknownL4ProtocolRcvdPacketCounts, b.UnknownL4ProtocolRcvdPacketCounts)
+	m.malformedL4RcvdPackets.Init(a.MalformedL4RcvdPackets, b.MalformedL4RcvdPackets)
+	m.tx.init(&a.Tx, &b.Tx)
+	m.txPacketsDroppedNoBufferSpace.Init(a.TxPacketsDroppedNoBufferSpace, b.TxPacketsDroppedNoBufferSpace)
+	m.rx.init(&a.Rx, &b.Rx)
+	m.disabledRx.init(&a.DisabledRx, &b.DisabledRx)
+	m.neighbor.init(&a.Neighbor, &b.Neighbor)
+}
+
+// LINT.ThenChange(../tcpip.go:NICStats)