add "swconfig list" support

Signed-off-by: John Crispin <blogic@openwrt.org>

SVN-Revision: 36282

package/network/config/swconfig/src/cli.c

@@ -167,6 +167,7 @@ show_vlan(struct switch_dev *dev, int vlan, bool all)
 static void
 print_usage(void)
 {
+	printf("swconfig list\n");
 	printf("swconfig dev <dev> [port <port>|vlan <vlan>] (help|set <key> <value>|get <key>|load <config>|show)\n");
 	exit(1);
 }
@@ -214,6 +215,11 @@ int main(int argc, char **argv)
 	char *ckey = NULL;
 	char *cvalue = NULL;
 
+	if((argc == 2) && !strcmp(argv[1], "list")) {
+		swlib_list();
+		return 0;
+	}
+
 	if(argc < 4)
 		print_usage();
 

package/network/config/swconfig/src/swlib.c

@@ -624,6 +624,36 @@ done:
 	return NL_SKIP;
 }
 
+static int
+list_switch(struct nl_msg *msg, void *arg)
+{
+	struct swlib_scan_arg *sa = arg;
+	struct genlmsghdr *gnlh = nlmsg_data(nlmsg_hdr(msg));
+	struct switch_dev *dev;
+	const char *name;
+	const char *alias;
+
+	if (nla_parse(tb, SWITCH_ATTR_MAX, genlmsg_attrdata(gnlh, 0), genlmsg_attrlen(gnlh, 0), NULL) < 0)
+		goto done;
+
+	if (!tb[SWITCH_ATTR_DEV_NAME] || !tb[SWITCH_ATTR_NAME])
+		goto done;
+
+	printf("Found: %s - %s\n", nla_get_string(tb[SWITCH_ATTR_DEV_NAME]),
+		nla_get_string(tb[SWITCH_ATTR_ALIAS]));
+
+done:
+	return NL_SKIP;
+}
+
+void
+swlib_list(void)
+{
+	if (swlib_priv_init() < 0)
+		return;
+	swlib_call(SWITCH_CMD_GET_SWITCH, list_switch, NULL, NULL);
+	swlib_priv_free();
+}
 
 struct switch_dev *
 swlib_connect(const char *name)

package/network/config/swconfig/src/swlib.h

@@ -154,6 +154,11 @@ struct switch_port {
 	unsigned int flags;
 };
 
+/**
+ * swlib_list: list all switches
+ */
+void swlib_list(void);
+
 /**
  * swlib_connect: connect to the switch through netlink
  * @name: name of the ethernet interface,