Update golangci-lint

.github/workflows/lint.yml

@@ -20,21 +20,17 @@ jobs:
     runs-on: ubuntu-latest
     steps:
       - name: Checkout
-        uses: actions/checkout@v4
+        uses: actions/checkout@08c6903cd8c0fde910a37f88322edcfb5dd907a8 # v5
         with:
           fetch-depth: 0
       - name: Setup Go
         uses: actions/setup-go@v5
         with:
-          go-version: ^1.23
+          go-version: ^1.25
-      - name: Cache go module
-        uses: actions/cache@v4
-        with:
-          path: |
-            ~/go/pkg/mod
-          key: go-${{ hashFiles('**/go.sum') }}
       - name: golangci-lint
-        uses: golangci/golangci-lint-action@v6
+        uses: golangci/golangci-lint-action@v8
         with:
           version: latest
-          args: .
+          args: --timeout=30m
+          install-mode: binary
+          verify: false

.gitignore

@@ -1,3 +1,5 @@
 /.idea/
 /vendor/
 .DS_Store
+!/README.md
+/*.md

.golangci.yml

@@ -1,20 +1,49 @@
-linters:
+version: "2"
-  disable-all: true
-  enable:
-    - gofumpt
-    - govet
-    - gci
-    - staticcheck
-    - paralleltest
-    - ineffassign
-
-linters-settings:
-  gci:
-    custom-order: true
-    sections:
-      - standard
-      - prefix(github.com/sagernet/)
-      - default
-
 run:
-  go: "1.23"
+  go: "1.25"
+linters:
+  default: none
+  enable:
+    - govet
+    - ineffassign
+    - paralleltest
+    - staticcheck
+  settings:
+    staticcheck:
+      checks:
+        - all
+        - -S1000
+        - -S1008
+        - -S1017
+        - -ST1003
+        - -QF1001
+        - -QF1003
+        - -QF1008
+  exclusions:
+    generated: lax
+    presets:
+      - comments
+      - common-false-positives
+      - legacy
+      - std-error-handling
+    paths:
+      - third_party$
+      - builtin$
+      - examples$
+formatters:
+  enable:
+    - gci
+    - gofumpt
+  settings:
+    gci:
+      sections:
+        - standard
+        - prefix(github.com/sagernet/)
+        - default
+      custom-order: true
+  exclusions:
+    generated: lax
+    paths:
+      - third_party$
+      - builtin$
+      - examples$

tun_offload_linux.go

@@ -149,12 +149,12 @@ func (t *tcpGROTable) insert(pkt []byte, srcAddrOffset, dstAddrOffset, tcphOffse
 }
 
 func (t *tcpGROTable) updateAt(item tcpGROItem, i int) {
-	items, _ := t.itemsByFlow[item.key]
+	items := t.itemsByFlow[item.key]
 	items[i] = item
 }
 
 func (t *tcpGROTable) deleteAt(key tcpFlowKey, i int) {
-	items, _ := t.itemsByFlow[key]
+	items := t.itemsByFlow[key]
 	items = append(items[:i], items[i+1:]...)
 	t.itemsByFlow[key] = items
 }
@@ -254,7 +254,7 @@ func (u *udpGROTable) insert(pkt []byte, srcAddrOffset, dstAddrOffset, udphOffse
 }
 
 func (u *udpGROTable) updateAt(item udpGROItem, i int) {
-	items, _ := u.itemsByFlow[item.key]
+	items := u.itemsByFlow[item.key]
 	items[i] = item
 }