add goreleaser and github action

.github/workflows/goreleaser.yml

@@ -0,0 +1,33 @@
+name: goreleaser
+
+on:
+  push:
+    tags:
+      - v*
+
+jobs:
+  goreleaser:
+    runs-on: ubuntu-latest
+    steps:
+      - name: Checkout
+        uses: actions/checkout@v3
+        with:
+          fetch-depth: 0
+
+      - name: Set up environment variables
+        run: |
+          echo "VERSION=$(git describe --tags $(git rev-list --tags --max-count=1))" >> $GITHUB_ENV
+
+      - name: Set up Go
+        uses: actions/setup-go@v2
+        with:
+          go-version: 1.19
+
+      - name: Run GoReleaser
+        uses: goreleaser/goreleaser-action@v2
+        with:
+          version: latest
+          args: release --clean
+        env:
+          GITHUB_TOKEN: ${{ secrets.GITHUB_TOKEN }}
+

.goreleaser.yml

@@ -0,0 +1,35 @@
+before:
+  hooks:
+    - go mod download
+
+builds:
+  - id: skbdump
+    binary: skbdump
+    env:
+      - CGO_ENABLED=0
+    goos:
+      - linux
+    goarch:
+      - amd64
+
+archives:
+  - replacements:
+      linux: Linux
+      amd64: x86_64
+
+checksum:
+  name_template: 'checksums.txt'
+
+release:
+  prerelease: auto
+
+snapshot:
+  name_template: "{{ .Tag }}-next"
+
+changelog:
+  sort: asc
+  filters:
+    exclude:
+    - '^docs:'
+    - '^test:'
+

config.go

@@ -0,0 +1,26 @@
+package main
+
+import (
+	"strings"
+
+	flag "github.com/spf13/pflag"
+)
+
+type Config struct {
+	Iface         string
+	Priority      uint32
+	SkbFilename   string
+	PcapFilename  string
+	PcapFilterExp string
+}
+
+var config Config
+
+func initConfig() {
+	flag.StringVarP(&config.Iface, "interface", "i", "lo", "interface to capture")
+	flag.Uint32VarP(&config.Priority, "priority", "p", 1, "filter priority")
+	flag.StringVarP(&config.SkbFilename, "skb-filename", "s", "skbdump.skb", "output skb filename")
+	flag.StringVarP(&config.PcapFilename, "pcap-filename", "w", "skbdump.pcap", "output pcap filename")
+	flag.Parse()
+	config.PcapFilterExp = strings.Join(flag.Args(), " ")
+}