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multicast_fanout.c
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multicast_fanout.c
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// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) B.A.T.M.A.N. contributors:
*
* Linus Lüssing <linus.luessing@c0d3.blue>
*
* License-Filename: LICENSES/preferred/GPL-2.0
*/
#include <errno.h>
#include <stddef.h>
#include <stdint.h>
#include <string.h>
#include "main.h"
#include "sys.h"
static struct multicast_fanout_data {
uint32_t multicast_fanout;
} multicast_fanout;
static int parse_multicast_fanout(struct state *state, int argc, char *argv[])
{
struct settings_data *settings = state->cmd->arg;
struct multicast_fanout_data *data = settings->data;
char *endptr;
if (argc != 2) {
fprintf(stderr, "Error - incorrect number of arguments (expected 1)\n");
return -EINVAL;
}
data->multicast_fanout = strtoul(argv[1], &endptr, 0);
if (!endptr || *endptr != '\0') {
fprintf(stderr, "Error - the supplied argument is invalid: %s\n", argv[1]);
return -EINVAL;
}
return 0;
}
static int print_multicast_fanout(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX + 1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct genlmsghdr *ghdr;
int *result = arg;
if (!genlmsg_valid_hdr(nlh, 0))
return NL_OK;
ghdr = nlmsg_data(nlh);
if (nla_parse(attrs, BATADV_ATTR_MAX, genlmsg_attrdata(ghdr, 0),
genlmsg_len(ghdr), batadv_netlink_policy)) {
return NL_OK;
}
if (!attrs[BATADV_ATTR_MULTICAST_FANOUT])
return NL_OK;
printf("%u\n", nla_get_u32(attrs[BATADV_ATTR_MULTICAST_FANOUT]));
*result = 0;
return NL_STOP;
}
static int get_multicast_fanout(struct state *state)
{
return sys_simple_nlquery(state, BATADV_CMD_GET_MESH,
NULL, print_multicast_fanout);
}
static int set_attrs_multicast_fanout(struct nl_msg *msg, void *arg)
{
struct state *state = arg;
struct settings_data *settings = state->cmd->arg;
struct multicast_fanout_data *data = settings->data;
nla_put_u32(msg, BATADV_ATTR_MULTICAST_FANOUT, data->multicast_fanout);
return 0;
}
static int set_multicast_fanout(struct state *state)
{
return sys_simple_nlquery(state, BATADV_CMD_SET_MESH,
set_attrs_multicast_fanout, NULL);
}
static struct settings_data batctl_settings_multicast_fanout = {
.data = &multicast_fanout,
.parse = parse_multicast_fanout,
.netlink_get = get_multicast_fanout,
.netlink_set = set_multicast_fanout,
};
COMMAND_NAMED(SUBCOMMAND_MIF, multicast_fanout, "mo", handle_sys_setting,
COMMAND_FLAG_MESH_IFACE | COMMAND_FLAG_NETLINK,
&batctl_settings_multicast_fanout,
"[fanout] \tdisplay or modify multicast_fanout setting");