1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
|
// SPDX-License-Identifier: GPL-2.0
/* Copyright (C) B.A.T.M.A.N. contributors:
*
* Simon Wunderlich <sw@simonwunderlich.de>
*
* License-Filename: LICENSES/preferred/GPL-2.0
*/
#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 "batadv_packet_compat.h"
#include "batman_adv.h"
#include "bat-hosts.h"
#include "debug.h"
#include "functions.h"
#include "main.h"
#include "netlink.h"
static const int bla_backbone_mandatory[] = {
BATADV_ATTR_BLA_VID,
BATADV_ATTR_BLA_BACKBONE,
BATADV_ATTR_BLA_CRC,
BATADV_ATTR_LAST_SEEN_MSECS,
};
static int bla_backbone_callback(struct nl_msg *msg, void *arg)
{
struct nlattr *attrs[BATADV_ATTR_MAX + 1];
struct nlmsghdr *nlh = nlmsg_hdr(msg);
struct print_opts *opts = arg;
struct bat_host *bat_host;
struct genlmsghdr *ghdr;
uint16_t backbone_crc;
int last_seen_msecs;
int last_seen_secs;
uint8_t *backbone;
uint16_t vid;
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_BLA_BACKBONE)
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, bla_backbone_mandatory,
ARRAY_SIZE(bla_backbone_mandatory))) {
fputs("Missing attributes from kernel\n", stderr);
exit(1);
}
/* don't show own backbones */
if (attrs[BATADV_ATTR_BLA_OWN])
return NL_OK;
vid = nla_get_u16(attrs[BATADV_ATTR_BLA_VID]);
backbone = nla_data(attrs[BATADV_ATTR_BLA_BACKBONE]);
backbone_crc = nla_get_u16(attrs[BATADV_ATTR_BLA_CRC]);
last_seen_msecs = nla_get_u32(attrs[BATADV_ATTR_LAST_SEEN_MSECS]);
last_seen_secs = last_seen_msecs / 1000;
last_seen_msecs = last_seen_msecs % 1000;
bat_host = bat_hosts_find_by_mac((char *)backbone);
if (!(opts->read_opt & USE_BAT_HOSTS) || !bat_host)
printf("%02x:%02x:%02x:%02x:%02x:%02x ",
backbone[0], backbone[1], backbone[2],
backbone[3], backbone[4], backbone[5]);
else
printf("%17s ", bat_host->name);
printf("on %5d %4i.%03is (0x%04x)\n",
BATADV_PRINT_VID(vid), last_seen_secs, last_seen_msecs,
backbone_crc);
return NL_OK;
}
static int netlink_print_bla_backbone(struct state *state, char *orig_iface,
int read_opts, float orig_timeout,
float watch_interval)
{
return netlink_print_common(state, orig_iface, read_opts,
orig_timeout, watch_interval,
"Originator VID last seen (CRC )\n",
BATADV_CMD_GET_BLA_BACKBONE,
bla_backbone_callback);
}
static struct debug_table_data batctl_debug_table_backbonetable = {
.netlink_fn = netlink_print_bla_backbone,
};
COMMAND_NAMED(DEBUGTABLE, backbonetable, "bbt", handle_debug_table,
COMMAND_FLAG_MESH_IFACE | COMMAND_FLAG_NETLINK,
&batctl_debug_table_backbonetable, "");
|
