+int get_linklayer(unsigned *val, const char *arg)
+{
+ int res;
+
+ if (matches(arg, "ethernet") == 0)
+ res = LINKLAYER_ETHERNET;
+ else if (matches(arg, "atm") == 0)
+ res = LINKLAYER_ATM;
+ else if (matches(arg, "adsl") == 0)
+ res = LINKLAYER_ATM;
+ else
+ return -1; /* Indicate error */
+
+ *val = res;
+ return 0;
+}
+
+void print_linklayer(char *buf, int len, unsigned linklayer)
+{
+ switch (linklayer) {
+ case LINKLAYER_UNSPEC:
+ snprintf(buf, len, "%s", "unspec");
+ return;
+ case LINKLAYER_ETHERNET:
+ snprintf(buf, len, "%s", "ethernet");
+ return;
+ case LINKLAYER_ATM:
+ snprintf(buf, len, "%s", "atm");
+ return;
+ default:
+ snprintf(buf, len, "%s", "unknown");
+ return;
+ }
+}
+
+char *sprint_linklayer(unsigned linklayer, char *buf)
+{
+ print_linklayer(buf, SPRINT_BSIZE-1, linklayer);
+ return buf;
+}
+