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
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
|
/*
* INET An implementation of the TCP/IP protocol suite for the LINUX
* operating system. INET is implemented using the BSD Socket
* interface as the means of communication with the user level.
*
* This file implements the various access functions for the
* PROC file system. It is mainly used for debugging and
* statistics.
*
* Version: @(#)proc.c 1.0.5 05/27/93
*
* Authors: Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
* Gerald J. Heim, <heim@peanuts.informatik.uni-tuebingen.de>
* Fred Baumgarten, <dc6iq@insu1.etec.uni-karlsruhe.de>
* Erik Schoenfelder, <schoenfr@ibr.cs.tu-bs.de>
*
* Fixes:
* Alan Cox : UDP sockets show the rxqueue/txqueue
* using hint flag for the netinfo.
* Pauline Middelink : identd support
* Alan Cox : Make /proc safer.
* Erik Schoenfelder : /proc/net/snmp
* Alan Cox : Handle dead sockets properly.
*
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
* 2 of the License, or (at your option) any later version.
*/
#include <asm/system.h>
#include <linux/autoconf.h>
#include <linux/sched.h>
#include <linux/socket.h>
#include <linux/net.h>
#include <linux/un.h>
#include <linux/in.h>
#include <linux/param.h>
#include <linux/inet.h>
#include <linux/netdevice.h>
#include "ip.h"
#include "icmp.h"
#include "protocol.h"
#include "tcp.h"
#include "udp.h"
#include <linux/skbuff.h>
#include "sock.h"
#include "raw.h"
/*
* Get__netinfo returns the length of that string.
*
* KNOWN BUGS
* As in get_unix_netinfo, the buffer might be too small. If this
* happens, get__netinfo returns only part of the available infos.
*/
static int
get__netinfo(struct proto *pro, char *buffer, int format, char **start, off_t offset, int length)
{
struct sock **s_array;
struct sock *sp;
int i;
int timer_active;
unsigned long dest, src;
unsigned short destp, srcp;
int len=0;
off_t pos=0;
off_t begin=0;
s_array = pro->sock_array;
len+=sprintf(buffer, "sl local_address rem_address st tx_queue rx_queue tr tm->when uid\n");
/*
* This was very pretty but didn't work when a socket is destroyed at the wrong moment
* (eg a syn recv socket getting a reset), or a memory timer destroy. Instead of playing
* with timers we just concede defeat and cli().
*/
for(i = 0; i < SOCK_ARRAY_SIZE; i++)
{
cli();
sp = s_array[i];
while(sp != NULL)
{
dest = sp->daddr;
src = sp->saddr;
destp = sp->dummy_th.dest;
srcp = sp->dummy_th.source;
/* Since we are Little Endian we need to swap the bytes :-( */
destp = ntohs(destp);
srcp = ntohs(srcp);
timer_active = del_timer(&sp->timer);
if (!timer_active)
sp->timer.expires = 0;
len+=sprintf(buffer+len, "%2d: %08lX:%04X %08lX:%04X %02X %08lX:%08lX %02X:%08lX %08X %d %d\n",
i, src, srcp, dest, destp, sp->state,
format==0?sp->write_seq-sp->rcv_ack_seq:sp->rmem_alloc,
format==0?sp->acked_seq-sp->copied_seq:sp->wmem_alloc,
timer_active, sp->timer.expires, (unsigned) sp->retransmits,
sp->socket?SOCK_INODE(sp->socket)->i_uid:0,
timer_active?sp->timeout:0);
if (timer_active)
add_timer(&sp->timer);
/*
* All sockets with (port mod SOCK_ARRAY_SIZE) = i
* are kept in sock_array[i], so we must follow the
* 'next' link to get them all.
*/
sp = sp->next;
pos=begin+len;
if(pos<offset)
{
len=0;
begin=pos;
}
if(pos>offset+length)
break;
}
sti(); /* We only turn interrupts back on for a moment, but because the interrupt queues anything built up
before this will clear before we jump back and cli, so it's not as bad as it looks */
if(pos>offset+length)
break;
}
*start=buffer+(offset-begin);
len-=(offset-begin);
if(len>length)
len=length;
return len;
}
int tcp_get_info(char *buffer, char **start, off_t offset, int length)
{
return get__netinfo(&tcp_prot, buffer,0, start, offset, length);
}
int udp_get_info(char *buffer, char **start, off_t offset, int length)
{
return get__netinfo(&udp_prot, buffer,1, start, offset, length);
}
int raw_get_info(char *buffer, char **start, off_t offset, int length)
{
return get__netinfo(&raw_prot, buffer,1, start, offset, length);
}
/*
* Report socket allocation statistics [mea@utu.fi]
*/
int afinet_get_info(char *buffer, char **start, off_t offset, int length)
{
/* From net/socket.c */
extern int socket_get_info(char *, char **, off_t, int);
#ifndef _HURD_
extern struct proto packet_prot;
int len = socket_get_info(buffer,start,offset,length);
#else
int len = 0;
#endif
len += sprintf(buffer+len,"SOCK_ARRAY_SIZE=%d\n",SOCK_ARRAY_SIZE);
len += sprintf(buffer+len,"TCP: inuse %d highest %d\n",
tcp_prot.inuse, tcp_prot.highestinuse);
len += sprintf(buffer+len,"UDP: inuse %d highest %d\n",
udp_prot.inuse, udp_prot.highestinuse);
len += sprintf(buffer+len,"RAW: inuse %d highest %d\n",
raw_prot.inuse, raw_prot.highestinuse);
#ifndef _HURD_
len += sprintf(buffer+len,"PAC: inuse %d highest %d\n",
packet_prot.inuse, packet_prot.highestinuse);
#endif
*start = buffer + offset;
len -= offset;
if (len > length)
len = length;
return len;
}
/*
* Called from the PROCfs module. This outputs /proc/net/snmp.
*/
int snmp_get_info(char *buffer, char **start, off_t offset, int length)
{
extern struct tcp_mib tcp_statistics;
extern struct udp_mib udp_statistics;
int len;
/*
extern unsigned long tcp_rx_miss, tcp_rx_hit1,tcp_rx_hit2;
*/
len = sprintf (buffer,
"Ip: Forwarding DefaultTTL InReceives InHdrErrors InAddrErrors ForwDatagrams InUnknownProtos InDiscards InDelivers OutRequests OutDiscards OutNoRoutes ReasmTimeout ReasmReqds ReasmOKs ReasmFails FragOKs FragFails FragCreates\n"
"Ip: %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
ip_statistics.IpForwarding, ip_statistics.IpDefaultTTL,
ip_statistics.IpInReceives, ip_statistics.IpInHdrErrors,
ip_statistics.IpInAddrErrors, ip_statistics.IpForwDatagrams,
ip_statistics.IpInUnknownProtos, ip_statistics.IpInDiscards,
ip_statistics.IpInDelivers, ip_statistics.IpOutRequests,
ip_statistics.IpOutDiscards, ip_statistics.IpOutNoRoutes,
ip_statistics.IpReasmTimeout, ip_statistics.IpReasmReqds,
ip_statistics.IpReasmOKs, ip_statistics.IpReasmFails,
ip_statistics.IpFragOKs, ip_statistics.IpFragFails,
ip_statistics.IpFragCreates);
len += sprintf (buffer + len,
"Icmp: InMsgs InErrors InDestUnreachs InTimeExcds InParmProbs InSrcQuenchs InRedirects InEchos InEchoReps InTimestamps InTimestampReps InAddrMasks InAddrMaskReps OutMsgs OutErrors OutDestUnreachs OutTimeExcds OutParmProbs OutSrcQuenchs OutRedirects OutEchos OutEchoReps OutTimestamps OutTimestampReps OutAddrMasks OutAddrMaskReps\n"
"Icmp: %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
icmp_statistics.IcmpInMsgs, icmp_statistics.IcmpInErrors,
icmp_statistics.IcmpInDestUnreachs, icmp_statistics.IcmpInTimeExcds,
icmp_statistics.IcmpInParmProbs, icmp_statistics.IcmpInSrcQuenchs,
icmp_statistics.IcmpInRedirects, icmp_statistics.IcmpInEchos,
icmp_statistics.IcmpInEchoReps, icmp_statistics.IcmpInTimestamps,
icmp_statistics.IcmpInTimestampReps, icmp_statistics.IcmpInAddrMasks,
icmp_statistics.IcmpInAddrMaskReps, icmp_statistics.IcmpOutMsgs,
icmp_statistics.IcmpOutErrors, icmp_statistics.IcmpOutDestUnreachs,
icmp_statistics.IcmpOutTimeExcds, icmp_statistics.IcmpOutParmProbs,
icmp_statistics.IcmpOutSrcQuenchs, icmp_statistics.IcmpOutRedirects,
icmp_statistics.IcmpOutEchos, icmp_statistics.IcmpOutEchoReps,
icmp_statistics.IcmpOutTimestamps, icmp_statistics.IcmpOutTimestampReps,
icmp_statistics.IcmpOutAddrMasks, icmp_statistics.IcmpOutAddrMaskReps);
len += sprintf (buffer + len,
"Tcp: RtoAlgorithm RtoMin RtoMax MaxConn ActiveOpens PassiveOpens AttemptFails EstabResets CurrEstab InSegs OutSegs RetransSegs\n"
"Tcp: %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu %lu\n",
tcp_statistics.TcpRtoAlgorithm, tcp_statistics.TcpRtoMin,
tcp_statistics.TcpRtoMax, tcp_statistics.TcpMaxConn,
tcp_statistics.TcpActiveOpens, tcp_statistics.TcpPassiveOpens,
tcp_statistics.TcpAttemptFails, tcp_statistics.TcpEstabResets,
tcp_statistics.TcpCurrEstab, tcp_statistics.TcpInSegs,
tcp_statistics.TcpOutSegs, tcp_statistics.TcpRetransSegs);
len += sprintf (buffer + len,
"Udp: InDatagrams NoPorts InErrors OutDatagrams\nUdp: %lu %lu %lu %lu\n",
udp_statistics.UdpInDatagrams, udp_statistics.UdpNoPorts,
udp_statistics.UdpInErrors, udp_statistics.UdpOutDatagrams);
/*
len += sprintf( buffer + len,
"TCP fast path RX: H2: %ul H1: %ul L: %ul\n",
tcp_rx_hit2,tcp_rx_hit1,tcp_rx_miss);
*/
if (offset >= len)
{
*start = buffer;
return 0;
}
*start = buffer + offset;
len -= offset;
if (len > length)
len = length;
return len;
}
|
