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
112
113
114
115
116
117
118
119
120
121
122
123
124
|
/*-
* Copyright (c) 2005 Christian S.J. Peron
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions
* are met:
* 1. Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* 2. Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
*
* THIS SOFTWARE IS PROVIDED BY THE AUTHOR AND CONTRIBUTORS ``AS IS'' AND
* ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE AUTHOR OR CONTRIBUTORS BE LIABLE
* FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL
* DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS
* OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION)
* HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT
* LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY
* OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF
* SUCH DAMAGE.
*
* $FreeBSD$
*/
#include <sys/types.h>
#include <sys/protosw.h>
#include <sys/socket.h>
#include <sys/sysctl.h>
#include <sys/param.h>
#include <sys/user.h>
#include <net/if.h>
#include <net/if_var.h>
#include <net/bpfdesc.h>
#include <arpa/inet.h>
#include <err.h>
#include <errno.h>
#include <stdio.h>
#include <stdlib.h>
#include <string.h>
#include <unistd.h>
#include "netstat.h"
/* print bpf stats */
static char *
bpf_pidname(pid_t pid)
{
struct kinfo_proc newkp;
int error, mib[4];
size_t size;
mib[0] = CTL_KERN;
mib[1] = KERN_PROC;
mib[2] = KERN_PROC_PID;
mib[3] = pid;
size = sizeof(newkp);
error = sysctl(mib, 4, &newkp, &size, NULL, 0);
if (error < 0) {
warn("kern.proc.pid failed");
return (strdup("??????"));
}
return (strdup(newkp.ki_comm));
}
static void
bpf_flags(struct xbpf_d *bd, char *flagbuf)
{
*flagbuf++ = bd->bd_promisc ? 'p' : '-';
*flagbuf++ = bd->bd_immediate ? 'i' : '-';
*flagbuf++ = bd->bd_hdrcmplt ? '-' : 'f';
*flagbuf++ = bd->bd_seesent ? 's' : '-';
*flagbuf++ = bd->bd_async ? 'a' : '-';
*flagbuf++ = bd->bd_locked ? 'l' : '-';
*flagbuf++ = '\0';
}
void
bpf_stats(char *interface)
{
struct xbpf_d *d, *bd;
char *pname, flagbuf[12];
size_t size;
if (sysctlbyname("net.bpf.stats", NULL, &size,
NULL, 0) < 0) {
warn("net.bpf.stats");
return;
}
if (size == 0)
return;
bd = malloc(size);
if (bd == NULL) {
warn("malloc failed");
return;
}
if (sysctlbyname("net.bpf.stats", bd, &size,
NULL, 0) < 0) {
warn("net.bpf.stats");
free(bd);
return;
}
printf("%5s %6s %6s %9s %9s %9s %5s %5s %s\n",
"Pid", "Netif", "Flags", "Recv", "Drop", "Match", "Sblen",
"Hblen", "Command");
for (d = &bd[0]; d < &bd[size / sizeof(*d)]; d++) {
if (interface && strcmp(interface, d->bd_ifname) != 0)
continue;
bpf_flags(d, flagbuf);
pname = bpf_pidname(d->bd_pid);
printf("%5d %6s %6s %9lu %9lu %9lu %5d %5d %s\n",
d->bd_pid, d->bd_ifname, flagbuf,
d->bd_rcount, d->bd_dcount, d->bd_fcount,
d->bd_slen, d->bd_hlen, pname);
free(pname);
}
free(bd);
}
|
