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// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) B.A.T.M.A.N. contributors:
*
* Andrew Lunn <andrew@lunn.ch>
* Sven Eckelmann <sven@narfation.org>
*
* License-Filename: LICENSES/preferred/GPL-2.0
*/
#include <errno.h>
#include <net/if.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 <stdint.h>
#include <string.h>
#include "batman_adv.h"
#include "bat-hosts.h"
#include "debug.h"
#include "functions.h"
#include "main.h"
#include "netlink.h"
static const int originators_mandatory[] = {
BATADV_ATTR_ORIG_ADDRESS,
BATADV_ATTR_NEIGH_ADDRESS,
BATADV_ATTR_HARD_IFINDEX,
BATADV_ATTR_LAST_SEEN_MSECS,
};
static int originators_callback(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX + 1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
unsigned int throughput_mbits;
unsigned int throughput_kbits;
struct print_opts *opts = arg;
char ifname_buf[IF_NAMESIZE];
struct bat_host *bat_host;
struct genlmsghdr *ghdr;
int last_seen_msecs;
int last_seen_secs;
uint32_t ifindex;
float last_seen;
uint8_t *neigh;
uint8_t *orig;
char *ifname;
char c = ' ';
uint8_t tq;
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_ORIGINATORS)
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, originators_mandatory,
ARRAY_SIZE(originators_mandatory))) {
fputs("Missing attributes from kernel\n", stderr);
exit(1);
}
orig = nla_data(attrs[BATADV_ATTR_ORIG_ADDRESS]);
neigh = nla_data(attrs[BATADV_ATTR_NEIGH_ADDRESS]);
if (attrs[BATADV_ATTR_HARD_IFNAME]) {
ifname = nla_get_string(attrs[BATADV_ATTR_HARD_IFNAME]);
} else {
/* compatibility for Linux < 5.14/batman-adv < 2021.2 */
ifindex = nla_get_u32(attrs[BATADV_ATTR_HARD_IFINDEX]);
if (!if_indextoname(ifindex, ifname_buf))
ifname_buf[0] = '\0';
ifname = ifname_buf;
}
if (attrs[BATADV_ATTR_FLAG_BEST])
c = '*';
last_seen_msecs = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]);
last_seen = (float)last_seen_msecs / 1000.0;
last_seen_secs = last_seen_msecs / 1000;
last_seen_msecs = last_seen_msecs % 1000;
/* skip timed out originators */
if (opts->read_opt & NO_OLD_ORIGS)
if (last_seen > opts->orig_timeout)
return NL_OK;
if (attrs[BATADV_ATTR_THROUGHPUT]) {
throughput_kbits = nla_get_u32(attrs[BATADV_ATTR_THROUGHPUT]);
throughput_mbits = throughput_kbits / 1000;
throughput_kbits = throughput_kbits % 1000;
if (!(opts->read_opt & USE_BAT_HOSTS)) {
printf(" %c %02x:%02x:%02x:%02x:%02x:%02x %4i.%03is (%9u.%1u) %02x:%02x:%02x:%02x:%02x:%02x [%10s]\n",
c,
orig[0], orig[1], orig[2],
orig[3], orig[4], orig[5],
last_seen_secs, last_seen_msecs,
throughput_mbits, throughput_kbits / 100,
neigh[0], neigh[1], neigh[2],
neigh[3], neigh[4], neigh[5],
ifname);
} else {
bat_host = bat_hosts_find_by_mac((char *)orig);
if (bat_host)
printf(" %c %17s ", c, bat_host->name);
else
printf(" %c %02x:%02x:%02x:%02x:%02x:%02x ",
c,
orig[0], orig[1], orig[2],
orig[3], orig[4], orig[5]);
printf("%4i.%03is (%9u.%1u) ",
last_seen_secs, last_seen_msecs,
throughput_mbits, throughput_kbits / 100);
bat_host = bat_hosts_find_by_mac((char *)neigh);
if (bat_host)
printf(" %c %17s ", c, bat_host->name);
else
printf(" %02x:%02x:%02x:%02x:%02x:%02x ",
neigh[0], neigh[1], neigh[2],
neigh[3], neigh[4], neigh[5]);
printf("[%10s]\n", ifname);
}
}
if (attrs[BATADV_ATTR_TQ]) {
tq = nla_get_u8(attrs[BATADV_ATTR_TQ]);
if (!(opts->read_opt & USE_BAT_HOSTS)) {
printf(" %c %02x:%02x:%02x:%02x:%02x:%02x %4i.%03is (%3i) %02x:%02x:%02x:%02x:%02x:%02x [%10s]\n",
c,
orig[0], orig[1], orig[2],
orig[3], orig[4], orig[5],
last_seen_secs, last_seen_msecs, tq,
neigh[0], neigh[1], neigh[2],
neigh[3], neigh[4], neigh[5],
ifname);
} else {
bat_host = bat_hosts_find_by_mac((char *)orig);
if (bat_host)
printf(" %c %17s ", c, bat_host->name);
else
printf(" %c %02x:%02x:%02x:%02x:%02x:%02x ",
c,
orig[0], orig[1], orig[2],
orig[3], orig[4], orig[5]);
printf("%4i.%03is (%3i) ",
last_seen_secs, last_seen_msecs, tq);
bat_host = bat_hosts_find_by_mac((char *)neigh);
if (bat_host)
printf("%17s ", bat_host->name);
else
printf("%02x:%02x:%02x:%02x:%02x:%02x ",
neigh[0], neigh[1], neigh[2],
neigh[3], neigh[4], neigh[5]);
printf("[%10s]\n", ifname);
}
}
return NL_OK;
}
static int netlink_print_originators(struct state *state, char *orig_iface,
int read_opts, float orig_timeout,
float watch_interval)
{
char *header = NULL;
char *info_header;
/* only parse routing algorithm name */
last_err = -EINVAL;
info_header = netlink_get_info(state, BATADV_CMD_GET_ORIGINATORS, NULL);
free(info_header);
if (strlen(algo_name_buf) == 0)
return last_err;
if (!strcmp("BATMAN_IV", algo_name_buf))
header = " Originator last-seen (#/255) Nexthop [outgoingIF]\n";
if (!strcmp("BATMAN_V", algo_name_buf))
header = " Originator last-seen ( throughput) Nexthop [outgoingIF]\n";
if (!header)
return -EINVAL;
return netlink_print_common(state, orig_iface, read_opts,
orig_timeout, watch_interval, header,
BATADV_CMD_GET_ORIGINATORS,
originators_callback);
}
static struct debug_table_data batctl_debug_table_originators = {
.netlink_fn = netlink_print_originators,
.option_timeout_interval = 1,
.option_orig_iface = 1,
};
COMMAND_NAMED(DEBUGTABLE, originators, "o", handle_debug_table,
COMMAND_FLAG_MESH_IFACE | COMMAND_FLAG_NETLINK,
&batctl_debug_table_originators, "");
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