batman-adv: add infrastructure to change routing algorithm at runtime (1c280471) · Commits · e / devices / android_kernel_fairphone_FP5

net/batman-adv/bat_algo.h

0 → 100644

+27 −0

Original line number	Diff line number	Diff line
		/*
		* Copyright (C) 2011 B.A.T.M.A.N. contributors:
		*
		* Marek Lindner
		*
		* This program is free software; you can redistribute it and/or
		* modify it under the terms of version 2 of the GNU General Public
		* License as published by the Free Software Foundation.
		*
		* This program is distributed in the hope that it will be useful, but
		* WITHOUT ANY WARRANTY; without even the implied warranty of
		* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
		* General Public License for more details.
		*
		* You should have received a copy of the GNU General Public License
		* along with this program; if not, write to the Free Software
		* Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA
		* 02110-1301, USA
		*
		*/

		#ifndef _NET_BATMAN_ADV_BAT_ALGO_H_
		#define _NET_BATMAN_ADV_BAT_ALGO_H_

		int bat_iv_init(void);

		#endif /* _NET_BATMAN_ADV_BAT_ALGO_H_ */

net/batman-adv/bat_debugfs.c

+22 −0

Original line number	Diff line number	Diff line
		@@ -221,6 +221,11 @@ static void debug_log_cleanup(struct bat_priv *bat_priv)
		}
		#endif

		static int bat_algorithms_open(struct inode inode, struct file file)
		{
		return single_open(file, bat_algo_seq_print_text, NULL);
		}

		static int originators_open(struct inode inode, struct file file)
		{
		struct net_device net_dev = (struct net_device )inode->i_private;
		@@ -274,6 +279,7 @@ struct bat_debuginfo bat_debuginfo_##_name = { \
		} \
		};

		static BAT_DEBUGINFO(routing_algos, S_IRUGO, bat_algorithms_open);
		static BAT_DEBUGINFO(originators, S_IRUGO, originators_open);
		static BAT_DEBUGINFO(gateways, S_IRUGO, gateways_open);
		static BAT_DEBUGINFO(softif_neigh, S_IRUGO, softif_neigh_open);
		@@ -293,9 +299,25 @@ static struct bat_debuginfo *mesh_debuginfos[] = {

		void debugfs_init(void)
		{
		struct bat_debuginfo *bat_debug;
		struct dentry *file;

		bat_debugfs = debugfs_create_dir(DEBUGFS_BAT_SUBDIR, NULL);
		if (bat_debugfs == ERR_PTR(-ENODEV))
		bat_debugfs = NULL;

		if (!bat_debugfs)
		goto out;

		bat_debug = &bat_debuginfo_routing_algos;
		file = debugfs_create_file(bat_debug->attr.name,
		S_IFREG \| bat_debug->attr.mode,
		bat_debugfs, NULL, &bat_debug->fops);
		if (!file)
		pr_err("Can't add debugfs file: %s\n", bat_debug->attr.name);

		out:
		return;
		}

		void debugfs_destroy(void)

net/batman-adv/bat_iv_ogm.c

+10 −0

Original line number	Diff line number	Diff line
		@@ -29,6 +29,7 @@
		#include "gateway_client.h"
		#include "hard-interface.h"
		#include "send.h"
		#include "bat_algo.h"

		void bat_ogm_init(struct hard_iface *hard_iface)
		{
		@@ -1172,3 +1173,12 @@ void bat_ogm_receive(struct hard_iface if_incoming, struct sk_buff skb)
		} while (bat_ogm_aggr_packet(buff_pos, packet_len,
		batman_ogm_packet->tt_num_changes));
		}

		static struct bat_algo_ops batman_iv __read_mostly = {
		.name = "BATMAN IV",
		};

		int __init bat_iv_init(void)
		{
		return bat_algo_register(&batman_iv);
		}

net/batman-adv/main.c

+72 −0

Original line number	Diff line number	Diff line
		@@ -32,11 +32,14 @@
		#include "gateway_client.h"
		#include "vis.h"
		#include "hash.h"
		#include "bat_algo.h"


		/* List manipulations on hardif_list have to be rtnl_lock()'ed,
		* list traversals just rcu-locked */
		struct list_head hardif_list;
		char bat_routing_algo[20] = "BATMAN IV";
		static struct hlist_head bat_algo_list;

		unsigned char broadcast_addr[] = {0xff, 0xff, 0xff, 0xff, 0xff, 0xff};

		@@ -45,6 +48,9 @@ struct workqueue_struct *bat_event_workqueue;
		static int __init batman_init(void)
		{
		INIT_LIST_HEAD(&hardif_list);
		INIT_HLIST_HEAD(&bat_algo_list);

		bat_iv_init();

		/* the name should not be longer than 10 chars - see
		* http://lwn.net/Articles/23634/ */
		@@ -172,6 +178,72 @@ int is_my_mac(const uint8_t *addr)
		return 0;
		}

		static struct bat_algo_ops bat_algo_get(char name)
		{
		struct bat_algo_ops bat_algo_ops = NULL, bat_algo_ops_tmp;
		struct hlist_node *node;

		hlist_for_each_entry(bat_algo_ops_tmp, node, &bat_algo_list, list) {
		if (strcmp(bat_algo_ops_tmp->name, name) != 0)
		continue;

		bat_algo_ops = bat_algo_ops_tmp;
		break;
		}

		return bat_algo_ops;
		}

		int bat_algo_register(struct bat_algo_ops *bat_algo_ops)
		{
		struct bat_algo_ops *bat_algo_ops_tmp;
		int ret = -1;

		bat_algo_ops_tmp = bat_algo_get(bat_algo_ops->name);
		if (bat_algo_ops_tmp) {
		pr_info("Trying to register already registered routing "
		"algorithm: %s\n", bat_algo_ops->name);
		goto out;
		}

		INIT_HLIST_NODE(&bat_algo_ops->list);
		hlist_add_head(&bat_algo_ops->list, &bat_algo_list);
		ret = 0;

		out:
		return ret;
		}

		int bat_algo_select(struct bat_priv bat_priv, char name)
		{
		struct bat_algo_ops *bat_algo_ops;
		int ret = -1;

		bat_algo_ops = bat_algo_get(name);
		if (!bat_algo_ops)
		goto out;

		bat_priv->bat_algo_ops = bat_algo_ops;
		ret = 0;

		out:
		return ret;
		}

		int bat_algo_seq_print_text(struct seq_file seq, void offset)
		{
		struct bat_algo_ops *bat_algo_ops;
		struct hlist_node *node;

		seq_printf(seq, "Available routing algorithms:\n");

		hlist_for_each_entry(bat_algo_ops, node, &bat_algo_list, list) {
		seq_printf(seq, "%s\n", bat_algo_ops->name);
		}

		return 0;
		}

		module_init(batman_init);
		module_exit(batman_exit);

net/batman-adv/main.h

+4 −0

Original line number	Diff line number	Diff line
		@@ -147,6 +147,7 @@ enum dbg_level {
		#include <linux/seq_file.h>
		#include "types.h"

		extern char bat_routing_algo[];
		extern struct list_head hardif_list;

		extern unsigned char broadcast_addr[];
		@@ -157,6 +158,9 @@ void mesh_free(struct net_device *soft_iface);
		void inc_module_count(void);
		void dec_module_count(void);
		int is_my_mac(const uint8_t *addr);
		int bat_algo_register(struct bat_algo_ops *bat_algo_ops);
		int bat_algo_select(struct bat_priv bat_priv, char name);
		int bat_algo_seq_print_text(struct seq_file seq, void offset);

		#ifdef CONFIG_BATMAN_ADV_DEBUG
		int debug_log(struct bat_priv bat_priv, const char fmt, ...) __printf(2, 3);