init

src/internal/qmmonitor/network.go

@@ -0,0 +1,77 @@
+package qmmonitor
+
+import (
+	"strconv"
+	"strings"
+)
+
+// NICInfo holds parsed network interface info from "info network".
+type NICInfo struct {
+	Netdev  string
+	Queues  int
+	Type    string
+	Model   string
+	Macaddr string
+	Ifname  string
+}
+
+// ParseNetworkInfo parses the output of "info network" from qm monitor.
+// Format: "net0: index=0,type=tap,ifname=tap100i0,model=virtio-net-pci,macaddr=AA:BB:CC:DD:EE:FF"
+// Multiqueue lines: " \ net0: index=1,type=tap,ifname=tap100i0"
+// For multiqueue, same netdev appears multiple times with increasing index; queues = max(index)+1.
+func ParseNetworkInfo(raw string) []NICInfo {
+	nicsMap := make(map[string]map[string]string)
+
+	lines := strings.Split(raw, "\n")
+	for _, line := range lines {
+		line = strings.TrimSpace(line)
+		// Strip leading "\ " from continuation lines
+		line = strings.TrimPrefix(line, "\\ ")
+		line = strings.TrimSpace(line)
+		if line == "" {
+			continue
+		}
+
+		colonIdx := strings.Index(line, ": ")
+		if colonIdx < 0 {
+			continue
+		}
+		netdev := line[:colonIdx]
+		if !strings.HasPrefix(netdev, "net") {
+			continue
+		}
+
+		cfg := line[colonIdx+2:]
+		if _, ok := nicsMap[netdev]; !ok {
+			nicsMap[netdev] = make(map[string]string)
+		}
+		for _, pair := range strings.Split(cfg, ",") {
+			pair = strings.TrimSpace(pair)
+			if pair == "" {
+				continue
+			}
+			eqIdx := strings.Index(pair, "=")
+			if eqIdx < 0 {
+				continue
+			}
+			key := pair[:eqIdx]
+			value := pair[eqIdx+1:]
+			// Overwrite so last index wins (for multiqueue)
+			nicsMap[netdev][key] = value
+		}
+	}
+
+	var result []NICInfo
+	for netdev, cfg := range nicsMap {
+		idx, _ := strconv.Atoi(cfg["index"])
+		result = append(result, NICInfo{
+			Netdev:  netdev,
+			Queues:  idx + 1,
+			Type:    cfg["type"],
+			Model:   cfg["model"],
+			Macaddr: cfg["macaddr"],
+			Ifname:  cfg["ifname"],
+		})
+	}
+	return result
+}