1 /*
2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
5 *
6 * This file implements the various access functions for the
7 * PROC file system. This is very similar to the IPv4 version,
8 * except it reports the sockets in the INET6 address family.
9 *
10 * Version: $Id: proc.c,v 1.15 2000/07/07 22:29:42 davem Exp $
11 *
12 * Authors: David S. Miller (davem@caip.rutgers.edu)
13 *
14 * This program is free software; you can redistribute it and/or
15 * modify it under the terms of the GNU General Public License
16 * as published by the Free Software Foundation; either version
17 * 2 of the License, or (at your option) any later version.
18 */
19 #include <linux/sched.h>
20 #include <linux/socket.h>
21 #include <linux/net.h>
22 #include <linux/in6.h>
23 #include <linux/stddef.h>
24 #include <net/sock.h>
25 #include <net/tcp.h>
26 #include <net/transp_v6.h>
27 #include <net/ipv6.h>
28
29 static int fold_prot_inuse(struct proto *proto)
30 {
31 int res = 0;
32 int cpu;
33
34 for (cpu=0; cpu<smp_num_cpus; cpu++)
35 res += proto->stats[cpu_logical_map(cpu)].inuse;
36
37 return res;
38 }
39
40 int afinet6_get_info(char *buffer, char **start, off_t offset, int length, int dummy)
41 {
42 int len = 0;
43 len += sprintf(buffer+len, "TCP6: inuse %d\n",
44 fold_prot_inuse(&tcpv6_prot));
45 len += sprintf(buffer+len, "UDP6: inuse %d\n",
46 fold_prot_inuse(&udpv6_prot));
47 len += sprintf(buffer+len, "RAW6: inuse %d\n",
48 fold_prot_inuse(&rawv6_prot));
49 len += sprintf(buffer+len, "FRAG6: inuse %d memory %d\n",
50 ip6_frag_nqueues, atomic_read(&ip6_frag_mem));
51 *start = buffer + offset;
52 len -= offset;
53 if(len > length)
54 len = length;
55 return len;
56 }
57
58
59 struct snmp6_item
60 {
61 char *name;
62 unsigned long *ptr;
63 int mibsize;
64 } snmp6_list[] = {
65 /* ipv6 mib according to draft-ietf-ipngwg-ipv6-mib-04 */
66 #define SNMP6_GEN(x) { #x , &ipv6_statistics[0].x, sizeof(struct ipv6_mib)/sizeof(unsigned long) }
67 SNMP6_GEN(Ip6InReceives),
68 SNMP6_GEN(Ip6InHdrErrors),
69 SNMP6_GEN(Ip6InTooBigErrors),
70 SNMP6_GEN(Ip6InNoRoutes),
71 SNMP6_GEN(Ip6InAddrErrors),
72 SNMP6_GEN(Ip6InUnknownProtos),
73 SNMP6_GEN(Ip6InTruncatedPkts),
74 SNMP6_GEN(Ip6InDiscards),
75 SNMP6_GEN(Ip6InDelivers),
76 SNMP6_GEN(Ip6OutForwDatagrams),
77 SNMP6_GEN(Ip6OutRequests),
78 SNMP6_GEN(Ip6OutDiscards),
79 SNMP6_GEN(Ip6OutNoRoutes),
80 SNMP6_GEN(Ip6ReasmTimeout),
81 SNMP6_GEN(Ip6ReasmReqds),
82 SNMP6_GEN(Ip6ReasmOKs),
83 SNMP6_GEN(Ip6ReasmFails),
84 SNMP6_GEN(Ip6FragOKs),
85 SNMP6_GEN(Ip6FragFails),
86 SNMP6_GEN(Ip6FragCreates),
87 SNMP6_GEN(Ip6InMcastPkts),
88 SNMP6_GEN(Ip6OutMcastPkts),
89 #undef SNMP6_GEN
90 /* icmpv6 mib according to draft-ietf-ipngwg-ipv6-icmp-mib-02
91
92 Exceptions: {In|Out}AdminProhibs are removed, because I see
93 no good reasons to account them separately
94 of another dest.unreachs.
95 OutErrs is zero identically.
96 OutEchos too.
97 OutRouterAdvertisements too.
98 OutGroupMembQueries too.
99 */
100 #define SNMP6_GEN(x) { #x , &icmpv6_statistics[0].x, sizeof(struct icmpv6_mib)/sizeof(unsigned long) }
101 SNMP6_GEN(Icmp6InMsgs),
102 SNMP6_GEN(Icmp6InErrors),
103 SNMP6_GEN(Icmp6InDestUnreachs),
104 SNMP6_GEN(Icmp6InPktTooBigs),
105 SNMP6_GEN(Icmp6InTimeExcds),
106 SNMP6_GEN(Icmp6InParmProblems),
107 SNMP6_GEN(Icmp6InEchos),
108 SNMP6_GEN(Icmp6InEchoReplies),
109 SNMP6_GEN(Icmp6InGroupMembQueries),
110 SNMP6_GEN(Icmp6InGroupMembResponses),
111 SNMP6_GEN(Icmp6InGroupMembReductions),
112 SNMP6_GEN(Icmp6InRouterSolicits),
113 SNMP6_GEN(Icmp6InRouterAdvertisements),
114 SNMP6_GEN(Icmp6InNeighborSolicits),
115 SNMP6_GEN(Icmp6InNeighborAdvertisements),
116 SNMP6_GEN(Icmp6InRedirects),
117 SNMP6_GEN(Icmp6OutMsgs),
118 SNMP6_GEN(Icmp6OutDestUnreachs),
119 SNMP6_GEN(Icmp6OutPktTooBigs),
120 SNMP6_GEN(Icmp6OutTimeExcds),
121 SNMP6_GEN(Icmp6OutParmProblems),
122 SNMP6_GEN(Icmp6OutEchoReplies),
123 SNMP6_GEN(Icmp6OutRouterSolicits),
124 SNMP6_GEN(Icmp6OutNeighborSolicits),
125 SNMP6_GEN(Icmp6OutNeighborAdvertisements),
126 SNMP6_GEN(Icmp6OutRedirects),
127 SNMP6_GEN(Icmp6OutGroupMembResponses),
128 SNMP6_GEN(Icmp6OutGroupMembReductions),
129 #undef SNMP6_GEN
130 #define SNMP6_GEN(x) { "Udp6" #x , &udp_stats_in6[0].Udp##x, sizeof(struct udp_mib)/sizeof(unsigned long) }
131 SNMP6_GEN(InDatagrams),
132 SNMP6_GEN(NoPorts),
133 SNMP6_GEN(InErrors),
134 SNMP6_GEN(OutDatagrams)
135 #undef SNMP6_GEN
136 };
137
138 static unsigned long fold_field(unsigned long *ptr, int size)
139 {
140 unsigned long res = 0;
141 int i;
142
143 for (i=0; i<smp_num_cpus; i++) {
144 res += ptr[2*cpu_logical_map(i)*size];
145 res += ptr[(2*cpu_logical_map(i)+1)*size];
146 }
147
148 return res;
149 }
150
151 int afinet6_get_snmp(char *buffer, char **start, off_t offset, int length)
152 {
153 int len = 0;
154 int i;
155
156 for (i=0; i<sizeof(snmp6_list)/sizeof(snmp6_list[0]); i++)
157 len += sprintf(buffer+len, "%-32s\t%ld\n", snmp6_list[i].name,
158 fold_field(snmp6_list[i].ptr, snmp6_list[i].mibsize));
159
160 len -= offset;
161
162 if (len > length)
163 len = length;
164 if(len < 0)
165 len = 0;
166
167 *start = buffer + offset;
168
169 return len;
170 }
171
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