29824a55c0
The routing API data structure contains several function pointers that can easily be grouped together based on the component they work with. Split the API in subobjects in order to improve definition readability. At the same time, remove the "bat_" prefix from the API object and its fields names. These are batman-adv private structs and there is no need to always prepend such prefix, which only makes function invocations much much longer. Signed-off-by: Antonio Quartulli <a@unstable.cc> Reviewed-by: Sven Eckelmann <sven@narfation.org> Signed-off-by: Marek Lindner <mareklindner@neomailbox.ch> Signed-off-by: Simon Wunderlich <sw@simonwunderlich.de>
141 lines
3.6 KiB
C
141 lines
3.6 KiB
C
/* Copyright (C) 2007-2016 B.A.T.M.A.N. contributors:
|
|
*
|
|
* Marek Lindner, Simon Wunderlich
|
|
*
|
|
* 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, see <http://www.gnu.org/licenses/>.
|
|
*/
|
|
|
|
#include "main.h"
|
|
|
|
#include <linux/errno.h>
|
|
#include <linux/list.h>
|
|
#include <linux/moduleparam.h>
|
|
#include <linux/printk.h>
|
|
#include <linux/seq_file.h>
|
|
#include <linux/stddef.h>
|
|
#include <linux/string.h>
|
|
|
|
#include "bat_algo.h"
|
|
|
|
char batadv_routing_algo[20] = "BATMAN_IV";
|
|
static struct hlist_head batadv_algo_list;
|
|
|
|
/**
|
|
* batadv_algo_init - Initialize batman-adv algorithm management data structures
|
|
*/
|
|
void batadv_algo_init(void)
|
|
{
|
|
INIT_HLIST_HEAD(&batadv_algo_list);
|
|
}
|
|
|
|
static struct batadv_algo_ops *batadv_algo_get(char *name)
|
|
{
|
|
struct batadv_algo_ops *bat_algo_ops = NULL, *bat_algo_ops_tmp;
|
|
|
|
hlist_for_each_entry(bat_algo_ops_tmp, &batadv_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 batadv_algo_register(struct batadv_algo_ops *bat_algo_ops)
|
|
{
|
|
struct batadv_algo_ops *bat_algo_ops_tmp;
|
|
|
|
bat_algo_ops_tmp = batadv_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);
|
|
return -EEXIST;
|
|
}
|
|
|
|
/* all algorithms must implement all ops (for now) */
|
|
if (!bat_algo_ops->iface.enable ||
|
|
!bat_algo_ops->iface.disable ||
|
|
!bat_algo_ops->iface.update_mac ||
|
|
!bat_algo_ops->iface.primary_set ||
|
|
!bat_algo_ops->neigh.cmp ||
|
|
!bat_algo_ops->neigh.is_similar_or_better) {
|
|
pr_info("Routing algo '%s' does not implement required ops\n",
|
|
bat_algo_ops->name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
INIT_HLIST_NODE(&bat_algo_ops->list);
|
|
hlist_add_head(&bat_algo_ops->list, &batadv_algo_list);
|
|
|
|
return 0;
|
|
}
|
|
|
|
int batadv_algo_select(struct batadv_priv *bat_priv, char *name)
|
|
{
|
|
struct batadv_algo_ops *bat_algo_ops;
|
|
|
|
bat_algo_ops = batadv_algo_get(name);
|
|
if (!bat_algo_ops)
|
|
return -EINVAL;
|
|
|
|
bat_priv->algo_ops = bat_algo_ops;
|
|
|
|
return 0;
|
|
}
|
|
|
|
int batadv_algo_seq_print_text(struct seq_file *seq, void *offset)
|
|
{
|
|
struct batadv_algo_ops *bat_algo_ops;
|
|
|
|
seq_puts(seq, "Available routing algorithms:\n");
|
|
|
|
hlist_for_each_entry(bat_algo_ops, &batadv_algo_list, list) {
|
|
seq_printf(seq, " * %s\n", bat_algo_ops->name);
|
|
}
|
|
|
|
return 0;
|
|
}
|
|
|
|
static int batadv_param_set_ra(const char *val, const struct kernel_param *kp)
|
|
{
|
|
struct batadv_algo_ops *bat_algo_ops;
|
|
char *algo_name = (char *)val;
|
|
size_t name_len = strlen(algo_name);
|
|
|
|
if (name_len > 0 && algo_name[name_len - 1] == '\n')
|
|
algo_name[name_len - 1] = '\0';
|
|
|
|
bat_algo_ops = batadv_algo_get(algo_name);
|
|
if (!bat_algo_ops) {
|
|
pr_err("Routing algorithm '%s' is not supported\n", algo_name);
|
|
return -EINVAL;
|
|
}
|
|
|
|
return param_set_copystring(algo_name, kp);
|
|
}
|
|
|
|
static const struct kernel_param_ops batadv_param_ops_ra = {
|
|
.set = batadv_param_set_ra,
|
|
.get = param_get_string,
|
|
};
|
|
|
|
static struct kparam_string batadv_param_string_ra = {
|
|
.maxlen = sizeof(batadv_routing_algo),
|
|
.string = batadv_routing_algo,
|
|
};
|
|
|
|
module_param_cb(routing_algo, &batadv_param_ops_ra, &batadv_param_string_ra,
|
|
0644);
|