[v3,39/42] batctl: Move routing_algo specific code it command source file

diff --git a/debug.c b/debug.c
index b908e00..2979dff 100644
--- a/debug.c
+++ b/debug.c
@@ -183,18 +183,3 @@  int handle_debug_table(struct state *state, int argc, char **argv)
 			 read_opt, orig_timeout, watch_interval,
 			 debug_table->header_lines);
 }
-
-int debug_print_routing_algos(void)
-{
-	char full_path[MAX_PATH+1];
-	char *debugfs_mnt;
-
-	debugfs_mnt = debugfs_mount(NULL);
-	if (!debugfs_mnt) {
-		fprintf(stderr, "Error - can't mount or find debugfs\n");
-		return -1;
-	}
-
-	debugfs_make_path(DEBUG_BATIF_PATH_FMT, "", full_path, sizeof(full_path));
-	return read_file(full_path, DEBUG_ROUTING_ALGOS, 0, 0, 0, 0);
-}
diff --git a/debug.h b/debug.h
index 525a46b..2dac1b7 100644
--- a/debug.h
+++ b/debug.h
@@ -48,6 +48,5 @@  struct debug_table_data {
 };
 
 int handle_debug_table(struct state *state, int argc, char **argv);
-int debug_print_routing_algos(void);
 
 #endif
diff --git a/functions.c b/functions.c
index 0a7b587..bdede8b 100644
--- a/functions.c
+++ b/functions.c
@@ -905,16 +905,6 @@  int vlan_get_link(const char *ifname, char **parent)
 	return arg.vid;
 }
 
-int print_routing_algos(void)
-{
-	int err;
-
-	err = netlink_print_routing_algos();
-	if (err == -EOPNOTSUPP)
-		err = debug_print_routing_algos();
-	return err;
-}
-
 int query_rtnl_link(int ifindex, nl_recvmsg_msg_cb_t func, void *arg)
 {
 	struct ifinfomsg rt_hdr = {
diff --git a/functions.h b/functions.h
index d3144d0..c16ba2e 100644
--- a/functions.h
+++ b/functions.h
@@ -57,7 +57,6 @@  int check_mesh_iface_ownership(char *mesh_iface, char *hard_iface);
 void get_random_bytes(void *buf, size_t buflen);
 void check_root_or_die(const char *cmd);
 
-int print_routing_algos(void);
 extern char *line_ptr;
 
 enum {
diff --git a/netlink.c b/netlink.c
index 8268037..5285759 100644
--- a/netlink.c
+++ b/netlink.c
@@ -179,9 +179,8 @@  int missing_mandatory_attrs(struct nlattr *attrs[], const int mandatory[],
 	return 0;
 }
 
-static int print_error(struct sockaddr_nl *nla __maybe_unused,
-		       struct nlmsgerr *nlerr,
-		       void *arg __maybe_unused)
+int netlink_print_error(struct sockaddr_nl *nla __maybe_unused,
+			struct nlmsgerr *nlerr,	void *arg __maybe_unused)
 {
 	if (nlerr->error != -EOPNOTSUPP)
 		fprintf(stderr, "Error received: %s\n",
@@ -192,7 +191,7 @@  static int print_error(struct sockaddr_nl *nla __maybe_unused,
 	return NL_STOP;
 }
 
-static int stop_callback(struct nl_msg *msg, void *arg __maybe_unused)
+int netlink_stop_callback(struct nl_msg *msg, void *arg __maybe_unused)
 {
 	struct nlmsghdr *nlh = nlmsg_hdr(msg);
 	int *error = nlmsg_data(nlh);
@@ -381,7 +380,7 @@  char *netlink_get_info(int ifindex, uint8_t nl_cmd, const char *header)
 		goto err_free_sock;
 
 	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, info_callback, &opts);
-	nl_cb_err(cb, NL_CB_CUSTOM, print_error, NULL);
+	nl_cb_err(cb, NL_CB_CUSTOM, netlink_print_error, NULL);
 
 	nl_recvmsgs(sock, cb);
 
@@ -391,7 +390,7 @@  char *netlink_get_info(int ifindex, uint8_t nl_cmd, const char *header)
 	return opts.remaining_header;
 }
 
-static void netlink_print_remaining_header(struct print_opts *opts)
+void netlink_print_remaining_header(struct print_opts *opts)
 {
 	if (!opts->remaining_header)
 		return;
@@ -401,7 +400,7 @@  static void netlink_print_remaining_header(struct print_opts *opts)
 	opts->remaining_header = NULL;
 }
 
-static int netlink_print_common_cb(struct nl_msg *msg, void *arg)
+int netlink_print_common_cb(struct nl_msg *msg, void *arg)
 {
 	struct print_opts *opts = arg;
 
@@ -410,105 +409,6 @@  static int netlink_print_common_cb(struct nl_msg *msg, void *arg)
 	return opts->callback(msg, arg);
 }
 
-static const int routing_algos_mandatory[] = {
-	BATADV_ATTR_ALGO_NAME,
-};
-
-static int routing_algos_callback(struct nl_msg *msg, void *arg __maybe_unused)
-{
-	struct nlattr *attrs[BATADV_ATTR_MAX+1];
-	struct nlmsghdr *nlh = nlmsg_hdr(msg);
-	struct genlmsghdr *ghdr;
-	const char *algo_name;
-
-	if (!genlmsg_valid_hdr(nlh, 0)) {
-		fputs("Received invalid data from kernel.\n", stderr);
-		exit(1);
-	}
-
-	ghdr = nlmsg_data(nlh);
-
-	if (ghdr->cmd != BATADV_CMD_GET_ROUTING_ALGOS)
-		return NL_OK;
-
-	if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
-		      genlmsg_len(ghdr), batadv_netlink_policy)) {
-		fputs("Received invalid data from kernel.\n", stderr);
-		exit(1);
-	}
-
-	if (missing_mandatory_attrs(attrs, routing_algos_mandatory,
-				    ARRAY_SIZE(routing_algos_mandatory))) {
-		fputs("Missing attributes from kernel\n", stderr);
-		exit(1);
-	}
-
-	algo_name = nla_get_string(attrs[BATADV_ATTR_ALGO_NAME]);
-
-	printf(" * %s\n", algo_name);
-
-	return NL_OK;
-}
-
-int netlink_print_routing_algos(void)
-{
-	struct nl_sock *sock;
-	struct nl_msg *msg;
-	struct nl_cb *cb;
-	int family;
-	struct print_opts opts = {
-		.callback = routing_algos_callback,
-	};
-
-	sock = nl_socket_alloc();
-	if (!sock)
-		return -ENOMEM;
-
-	genl_connect(sock);
-
-	family = genl_ctrl_resolve(sock, BATADV_NL_NAME);
-	if (family < 0) {
-		last_err = -EOPNOTSUPP;
-		goto err_free_sock;
-	}
-
-	msg = nlmsg_alloc();
-	if (!msg) {
-		last_err = -ENOMEM;
-		goto err_free_sock;
-	}
-
-	genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, NLM_F_DUMP,
-		    BATADV_CMD_GET_ROUTING_ALGOS, 1);
-
-	nl_send_auto_complete(sock, msg);
-
-	nlmsg_free(msg);
-
-	opts.remaining_header = strdup("Available routing algorithms:\n");
-
-	cb = nl_cb_alloc(NL_CB_DEFAULT);
-	if (!cb) {
-		last_err = -ENOMEM;
-		goto err_free_sock;
-	}
-
-	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, netlink_print_common_cb,
-		  &opts);
-	nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, stop_callback, NULL);
-	nl_cb_err(cb, NL_CB_CUSTOM, print_error, NULL);
-
-	nl_recvmsgs(sock, cb);
-
-err_free_sock:
-	nl_socket_free(sock);
-
-	if (!last_err)
-		netlink_print_remaining_header(&opts);
-
-	return last_err;
-}
-
 int netlink_print_common(struct state *state, char *orig_iface, int read_opt,
 			 float orig_timeout, float watch_interval,
 			 const char *header, uint8_t nl_cmd,
@@ -550,8 +450,8 @@  int netlink_print_common(struct state *state, char *orig_iface, int read_opt,
 	bat_hosts_init(read_opt);
 
 	nl_cb_set(state->cb, NL_CB_VALID, NL_CB_CUSTOM, netlink_print_common_cb, &opts);
-	nl_cb_set(state->cb, NL_CB_FINISH, NL_CB_CUSTOM, stop_callback, NULL);
-	nl_cb_err(state->cb, NL_CB_CUSTOM, print_error, NULL);
+	nl_cb_set(state->cb, NL_CB_FINISH, NL_CB_CUSTOM, netlink_stop_callback, NULL);
+	nl_cb_err(state->cb, NL_CB_CUSTOM, netlink_print_error, NULL);
 
 	do {
 		if (read_opt & CLR_CONT_READ)
diff --git a/netlink.h b/netlink.h
index 2526b07..b91ca10 100644
--- a/netlink.h
+++ b/netlink.h
@@ -44,8 +44,6 @@  struct ether_addr;
 int netlink_create(struct state *state);
 void netlink_destroy(struct state *state);
 
-int netlink_print_routing_algos(void);
-
 char *netlink_get_info(int ifindex, uint8_t nl_cmd, const char *header);
 int translate_mac_netlink(const char *mesh_iface, const struct ether_addr *mac,
 			  struct ether_addr *mac_out);
@@ -62,6 +60,12 @@  int netlink_print_common(struct state *state, char *orig_iface, int read_opt,
 			 const char *header, uint8_t nl_cmd,
 			 nl_recvmsg_msg_cb_t callback);
 
+int netlink_print_common_cb(struct nl_msg *msg, void *arg);
+int netlink_stop_callback(struct nl_msg *msg, void *arg);
+int netlink_print_error(struct sockaddr_nl *nla, struct nlmsgerr *nlerr,
+			void *arg);
+void netlink_print_remaining_header(struct print_opts *opts);
+
 extern char algo_name_buf[256];
 extern int last_err;
 extern int64_t mcast_flags;
diff --git a/routing_algo.c b/routing_algo.c
index ded9284..18d9ef7 100644
--- a/routing_algo.c
+++ b/routing_algo.c
@@ -23,12 +23,21 @@ 
 #include <dirent.h>
 #include <errno.h>
 #include <getopt.h>
+#include <netinet/if_ether.h>
+#include <netlink/netlink.h>
+#include <netlink/genl/genl.h>
+#include <netlink/genl/ctrl.h>
 #include <stdio.h>
 #include <stdlib.h>
 #include <string.h>
 
+#include "batadv_packet.h"
+#include "batman_adv.h"
+#include "debug.h"
+#include "debugfs.h"
 #include "functions.h"
 #include "main.h"
+#include "netlink.h"
 #include "sys.h"
 
 #define SYS_SELECTED_RA_PATH	"/sys/module/batman_adv/parameters/routing_algo"
@@ -41,6 +50,130 @@  static void ra_mode_usage(void)
 	fprintf(stderr, " \t -h print this help\n");
 }
 
+static const int routing_algos_mandatory[] = {
+	BATADV_ATTR_ALGO_NAME,
+};
+
+static int routing_algos_callback(struct nl_msg *msg, void *arg __maybe_unused)
+{
+	struct nlattr *attrs[BATADV_ATTR_MAX+1];
+	struct nlmsghdr *nlh = nlmsg_hdr(msg);
+	struct genlmsghdr *ghdr;
+	const char *algo_name;
+
+	if (!genlmsg_valid_hdr(nlh, 0)) {
+		fputs("Received invalid data from kernel.\n", stderr);
+		exit(1);
+	}
+
+	ghdr = nlmsg_data(nlh);
+
+	if (ghdr->cmd != BATADV_CMD_GET_ROUTING_ALGOS)
+		return NL_OK;
+
+	if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
+		      genlmsg_len(ghdr), batadv_netlink_policy)) {
+		fputs("Received invalid data from kernel.\n", stderr);
+		exit(1);
+	}
+
+	if (missing_mandatory_attrs(attrs, routing_algos_mandatory,
+				    ARRAY_SIZE(routing_algos_mandatory))) {
+		fputs("Missing attributes from kernel\n", stderr);
+		exit(1);
+	}
+
+	algo_name = nla_get_string(attrs[BATADV_ATTR_ALGO_NAME]);
+
+	printf(" * %s\n", algo_name);
+
+	return NL_OK;
+}
+
+static int netlink_print_routing_algos(void)
+{
+	struct nl_sock *sock;
+	struct nl_msg *msg;
+	struct nl_cb *cb;
+	int family;
+	struct print_opts opts = {
+		.callback = routing_algos_callback,
+	};
+
+	sock = nl_socket_alloc();
+	if (!sock)
+		return -ENOMEM;
+
+	genl_connect(sock);
+
+	family = genl_ctrl_resolve(sock, BATADV_NL_NAME);
+	if (family < 0) {
+		last_err = -EOPNOTSUPP;
+		goto err_free_sock;
+	}
+
+	msg = nlmsg_alloc();
+	if (!msg) {
+		last_err = -ENOMEM;
+		goto err_free_sock;
+	}
+
+	genlmsg_put(msg, NL_AUTO_PID, NL_AUTO_SEQ, family, 0, NLM_F_DUMP,
+		    BATADV_CMD_GET_ROUTING_ALGOS, 1);
+
+	nl_send_auto_complete(sock, msg);
+
+	nlmsg_free(msg);
+
+	opts.remaining_header = strdup("Available routing algorithms:\n");
+
+	cb = nl_cb_alloc(NL_CB_DEFAULT);
+	if (!cb) {
+		last_err = -ENOMEM;
+		goto err_free_sock;
+	}
+
+	nl_cb_set(cb, NL_CB_VALID, NL_CB_CUSTOM, netlink_print_common_cb,
+		  &opts);
+	nl_cb_set(cb, NL_CB_FINISH, NL_CB_CUSTOM, netlink_stop_callback, NULL);
+	nl_cb_err(cb, NL_CB_CUSTOM, netlink_print_error, NULL);
+
+	nl_recvmsgs(sock, cb);
+
+err_free_sock:
+	nl_socket_free(sock);
+
+	if (!last_err)
+		netlink_print_remaining_header(&opts);
+
+	return last_err;
+}
+
+static int debug_print_routing_algos(void)
+{
+	char full_path[MAX_PATH+1];
+	char *debugfs_mnt;
+
+	debugfs_mnt = debugfs_mount(NULL);
+	if (!debugfs_mnt) {
+		fprintf(stderr, "Error - can't mount or find debugfs\n");
+		return -1;
+	}
+
+	debugfs_make_path(DEBUG_BATIF_PATH_FMT, "", full_path, sizeof(full_path));
+	return read_file(full_path, DEBUG_ROUTING_ALGOS, 0, 0, 0, 0);
+}
+
+static int print_routing_algos(void)
+{
+	int err;
+
+	err = netlink_print_routing_algos();
+	if (err == -EOPNOTSUPP)
+		err = debug_print_routing_algos();
+	return err;
+}
+
 static int routing_algo(struct state *state __maybe_unused, int argc, char **argv)
 {
 	DIR *iface_base_dir;