ci: run linter on all supported platforms (#3816)

* only define packetInfo.ifIndex on platforms where it's actually used

* fix comment and stylecheck for IP_DONTFRAGMENT on Windows

* fix build flags on test file

* ci: run golangci-lint on multiple platforms

.github/workflows/lint.yml

@@ -7,6 +7,7 @@ jobs:
       - uses: actions/checkout@v3
       - uses: actions/setup-go@v3
         with:
+          skip-pkg-cache: true
           go-version: "1.20.x"
       - name: Check that no non-test files import Ginkgo or Gomega
         run: .github/workflows/no_ginkgo.sh
@@ -28,8 +29,45 @@ jobs:
       - uses: actions/setup-go@v3
         with:
           go-version: "1.20.x"
-      - name: golangci-lint
+      - name: golangci-lint (Linux)
         uses: golangci/golangci-lint-action@v3
         with:
+          skip-pkg-cache: true
+          args: --timeout=3m
+          version: v1.52.2
+      - name: golangci-lint (Windows)
+        if: success() || failure() # run this step even if the previous one failed
+        uses: golangci/golangci-lint-action@v3
+        env:
+          GOOS: "windows"
+        with:
+          skip-pkg-cache: true
+          args: --timeout=3m
+          version: v1.52.2
+      - name: golangci-lint (OSX)
+        if: success() || failure() # run this step even if the previous one failed
+        uses: golangci/golangci-lint-action@v3
+        env:
+          GOOS: "darwin"
+        with:
+          skip-pkg-cache: true
+          args: --timeout=3m
+          version: v1.52.2
+      - name: golangci-lint (FreeBSD)
+        if: success() || failure() # run this step even if the previous one failed
+        uses: golangci/golangci-lint-action@v3
+        env:
+          GOOS: "freebsd"
+        with:
+          skip-pkg-cache: true
+          args: --timeout=3m
+          version: v1.52.2
+      - name: golangci-lint (others)
+        if: success() || failure() # run this step even if the previous one failed
+        uses: golangci/golangci-lint-action@v3
+        env:
+          GOOS: "solaris" # some OS that we don't have any build tags for
+        with:
+          skip-pkg-cache: true
           args: --timeout=3m
           version: v1.52.2