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1 | /* SCTP kernel reference Implementation |
2 | * Copyright (c) 2003 International Business Machines, Corp. | |
3 | * | |
4 | * This file is part of the SCTP kernel reference Implementation | |
5 | * | |
6 | * The SCTP reference implementation is free software; | |
7 | * you can redistribute it and/or modify it under the terms of | |
8 | * the GNU General Public License as published by | |
9 | * the Free Software Foundation; either version 2, or (at your option) | |
10 | * any later version. | |
11 | * | |
12 | * The SCTP reference implementation is distributed in the hope that it | |
13 | * will be useful, but WITHOUT ANY WARRANTY; without even the implied | |
14 | * ************************ | |
15 | * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. | |
16 | * See the GNU General Public License for more details. | |
17 | * | |
18 | * You should have received a copy of the GNU General Public License | |
19 | * along with GNU CC; see the file COPYING. If not, write to | |
20 | * the Free Software Foundation, 59 Temple Place - Suite 330, | |
21 | * Boston, MA 02111-1307, USA. | |
22 | * | |
23 | * Please send any bug reports or fixes you make to the | |
24 | * email address(es): | |
25 | * lksctp developers <lksctp-developers@lists.sourceforge.net> | |
26 | * | |
27 | * Or submit a bug report through the following website: | |
28 | * http://www.sf.net/projects/lksctp | |
29 | * | |
30 | * Written or modified by: | |
31 | * Sridhar Samudrala <sri@us.ibm.com> | |
32 | * | |
33 | * Any bugs reported given to us we will try to fix... any fixes shared will | |
34 | * be incorporated into the next SCTP release. | |
35 | */ | |
36 | ||
37 | #include <linux/types.h> | |
38 | #include <linux/seq_file.h> | |
39 | #include <linux/init.h> | |
40 | #include <net/sctp/sctp.h> | |
41 | ||
42 | static struct snmp_mib sctp_snmp_list[] = { | |
43 | SNMP_MIB_ITEM("SctpCurrEstab", SCTP_MIB_CURRESTAB), | |
44 | SNMP_MIB_ITEM("SctpActiveEstabs", SCTP_MIB_ACTIVEESTABS), | |
45 | SNMP_MIB_ITEM("SctpPassiveEstabs", SCTP_MIB_PASSIVEESTABS), | |
46 | SNMP_MIB_ITEM("SctpAborteds", SCTP_MIB_ABORTEDS), | |
47 | SNMP_MIB_ITEM("SctpShutdowns", SCTP_MIB_SHUTDOWNS), | |
48 | SNMP_MIB_ITEM("SctpOutOfBlues", SCTP_MIB_OUTOFBLUES), | |
49 | SNMP_MIB_ITEM("SctpChecksumErrors", SCTP_MIB_CHECKSUMERRORS), | |
50 | SNMP_MIB_ITEM("SctpOutCtrlChunks", SCTP_MIB_OUTCTRLCHUNKS), | |
51 | SNMP_MIB_ITEM("SctpOutOrderChunks", SCTP_MIB_OUTORDERCHUNKS), | |
52 | SNMP_MIB_ITEM("SctpOutUnorderChunks", SCTP_MIB_OUTUNORDERCHUNKS), | |
53 | SNMP_MIB_ITEM("SctpInCtrlChunks", SCTP_MIB_INCTRLCHUNKS), | |
54 | SNMP_MIB_ITEM("SctpInOrderChunks", SCTP_MIB_INORDERCHUNKS), | |
55 | SNMP_MIB_ITEM("SctpInUnorderChunks", SCTP_MIB_INUNORDERCHUNKS), | |
56 | SNMP_MIB_ITEM("SctpFragUsrMsgs", SCTP_MIB_FRAGUSRMSGS), | |
57 | SNMP_MIB_ITEM("SctpReasmUsrMsgs", SCTP_MIB_REASMUSRMSGS), | |
58 | SNMP_MIB_ITEM("SctpOutSCTPPacks", SCTP_MIB_OUTSCTPPACKS), | |
59 | SNMP_MIB_ITEM("SctpInSCTPPacks", SCTP_MIB_INSCTPPACKS), | |
60 | }; | |
61 | ||
62 | /* Return the current value of a particular entry in the mib by adding its | |
63 | * per cpu counters. | |
64 | */ | |
65 | static unsigned long | |
66 | fold_field(void *mib[], int nr) | |
67 | { | |
68 | unsigned long res = 0; | |
69 | int i; | |
70 | ||
71 | for (i = 0; i < NR_CPUS; i++) { | |
72 | if (!cpu_possible(i)) | |
73 | continue; | |
74 | res += | |
75 | *((unsigned long *) (((void *) per_cpu_ptr(mib[0], i)) + | |
76 | sizeof (unsigned long) * nr)); | |
77 | res += | |
78 | *((unsigned long *) (((void *) per_cpu_ptr(mib[1], i)) + | |
79 | sizeof (unsigned long) * nr)); | |
80 | } | |
81 | return res; | |
82 | } | |
83 | ||
84 | /* Display sctp snmp mib statistics(/proc/net/sctp/snmp). */ | |
85 | static int sctp_snmp_seq_show(struct seq_file *seq, void *v) | |
86 | { | |
87 | int i; | |
88 | ||
89 | for (i = 0; sctp_snmp_list[i].name != NULL; i++) | |
90 | seq_printf(seq, "%-32s\t%ld\n", sctp_snmp_list[i].name, | |
91 | fold_field((void **)sctp_statistics, | |
92 | sctp_snmp_list[i].entry)); | |
93 | ||
94 | return 0; | |
95 | } | |
96 | ||
97 | /* Initialize the seq file operations for 'snmp' object. */ | |
98 | static int sctp_snmp_seq_open(struct inode *inode, struct file *file) | |
99 | { | |
100 | return single_open(file, sctp_snmp_seq_show, NULL); | |
101 | } | |
102 | ||
103 | static struct file_operations sctp_snmp_seq_fops = { | |
104 | .owner = THIS_MODULE, | |
105 | .open = sctp_snmp_seq_open, | |
106 | .read = seq_read, | |
107 | .llseek = seq_lseek, | |
108 | .release = single_release, | |
109 | }; | |
110 | ||
111 | /* Set up the proc fs entry for 'snmp' object. */ | |
112 | int __init sctp_snmp_proc_init(void) | |
113 | { | |
114 | struct proc_dir_entry *p; | |
115 | ||
116 | p = create_proc_entry("snmp", S_IRUGO, proc_net_sctp); | |
117 | if (!p) | |
118 | return -ENOMEM; | |
119 | ||
120 | p->proc_fops = &sctp_snmp_seq_fops; | |
121 | ||
122 | return 0; | |
123 | } | |
124 | ||
125 | /* Cleanup the proc fs entry for 'snmp' object. */ | |
126 | void sctp_snmp_proc_exit(void) | |
127 | { | |
128 | remove_proc_entry("snmp", proc_net_sctp); | |
129 | } | |
130 | ||
131 | /* Dump local addresses of an association/endpoint. */ | |
132 | static void sctp_seq_dump_local_addrs(struct seq_file *seq, struct sctp_ep_common *epb) | |
133 | { | |
134 | struct list_head *pos; | |
135 | struct sctp_sockaddr_entry *laddr; | |
136 | union sctp_addr *addr; | |
137 | struct sctp_af *af; | |
138 | ||
139 | list_for_each(pos, &epb->bind_addr.address_list) { | |
140 | laddr = list_entry(pos, struct sctp_sockaddr_entry, list); | |
141 | addr = (union sctp_addr *)&laddr->a; | |
142 | af = sctp_get_af_specific(addr->sa.sa_family); | |
143 | af->seq_dump_addr(seq, addr); | |
144 | } | |
145 | } | |
146 | ||
147 | /* Dump remote addresses of an association. */ | |
148 | static void sctp_seq_dump_remote_addrs(struct seq_file *seq, struct sctp_association *assoc) | |
149 | { | |
150 | struct list_head *pos; | |
151 | struct sctp_transport *transport; | |
152 | union sctp_addr *addr; | |
153 | struct sctp_af *af; | |
154 | ||
155 | list_for_each(pos, &assoc->peer.transport_addr_list) { | |
156 | transport = list_entry(pos, struct sctp_transport, transports); | |
157 | addr = (union sctp_addr *)&transport->ipaddr; | |
158 | af = sctp_get_af_specific(addr->sa.sa_family); | |
159 | af->seq_dump_addr(seq, addr); | |
160 | } | |
161 | } | |
162 | ||
163 | /* Display sctp endpoints (/proc/net/sctp/eps). */ | |
164 | static int sctp_eps_seq_show(struct seq_file *seq, void *v) | |
165 | { | |
166 | struct sctp_hashbucket *head; | |
167 | struct sctp_ep_common *epb; | |
168 | struct sctp_endpoint *ep; | |
169 | struct sock *sk; | |
170 | int hash; | |
171 | ||
172 | seq_printf(seq, " ENDPT SOCK STY SST HBKT LPORT LADDRS\n"); | |
173 | for (hash = 0; hash < sctp_ep_hashsize; hash++) { | |
174 | head = &sctp_ep_hashtable[hash]; | |
175 | read_lock(&head->lock); | |
176 | for (epb = head->chain; epb; epb = epb->next) { | |
177 | ep = sctp_ep(epb); | |
178 | sk = epb->sk; | |
179 | seq_printf(seq, "%8p %8p %-3d %-3d %-4d %-5d ", ep, sk, | |
180 | sctp_sk(sk)->type, sk->sk_state, hash, | |
181 | epb->bind_addr.port); | |
182 | sctp_seq_dump_local_addrs(seq, epb); | |
183 | seq_printf(seq, "\n"); | |
184 | } | |
185 | read_unlock(&head->lock); | |
186 | } | |
187 | ||
188 | return 0; | |
189 | } | |
190 | ||
191 | /* Initialize the seq file operations for 'eps' object. */ | |
192 | static int sctp_eps_seq_open(struct inode *inode, struct file *file) | |
193 | { | |
194 | return single_open(file, sctp_eps_seq_show, NULL); | |
195 | } | |
196 | ||
197 | static struct file_operations sctp_eps_seq_fops = { | |
198 | .open = sctp_eps_seq_open, | |
199 | .read = seq_read, | |
200 | .llseek = seq_lseek, | |
201 | .release = single_release, | |
202 | }; | |
203 | ||
204 | /* Set up the proc fs entry for 'eps' object. */ | |
205 | int __init sctp_eps_proc_init(void) | |
206 | { | |
207 | struct proc_dir_entry *p; | |
208 | ||
209 | p = create_proc_entry("eps", S_IRUGO, proc_net_sctp); | |
210 | if (!p) | |
211 | return -ENOMEM; | |
212 | ||
213 | p->proc_fops = &sctp_eps_seq_fops; | |
214 | ||
215 | return 0; | |
216 | } | |
217 | ||
218 | /* Cleanup the proc fs entry for 'eps' object. */ | |
219 | void sctp_eps_proc_exit(void) | |
220 | { | |
221 | remove_proc_entry("eps", proc_net_sctp); | |
222 | } | |
223 | ||
224 | /* Display sctp associations (/proc/net/sctp/assocs). */ | |
225 | static int sctp_assocs_seq_show(struct seq_file *seq, void *v) | |
226 | { | |
227 | struct sctp_hashbucket *head; | |
228 | struct sctp_ep_common *epb; | |
229 | struct sctp_association *assoc; | |
230 | struct sock *sk; | |
231 | int hash; | |
232 | ||
233 | seq_printf(seq, " ASSOC SOCK STY SST ST HBKT LPORT RPORT " | |
234 | "LADDRS <-> RADDRS\n"); | |
235 | for (hash = 0; hash < sctp_assoc_hashsize; hash++) { | |
236 | head = &sctp_assoc_hashtable[hash]; | |
237 | read_lock(&head->lock); | |
238 | for (epb = head->chain; epb; epb = epb->next) { | |
239 | assoc = sctp_assoc(epb); | |
240 | sk = epb->sk; | |
241 | seq_printf(seq, | |
242 | "%8p %8p %-3d %-3d %-2d %-4d %-5d %-5d ", | |
243 | assoc, sk, sctp_sk(sk)->type, sk->sk_state, | |
244 | assoc->state, hash, epb->bind_addr.port, | |
245 | assoc->peer.port); | |
246 | sctp_seq_dump_local_addrs(seq, epb); | |
247 | seq_printf(seq, "<-> "); | |
248 | sctp_seq_dump_remote_addrs(seq, assoc); | |
249 | seq_printf(seq, "\n"); | |
250 | } | |
251 | read_unlock(&head->lock); | |
252 | } | |
253 | ||
254 | return 0; | |
255 | } | |
256 | ||
257 | /* Initialize the seq file operations for 'assocs' object. */ | |
258 | static int sctp_assocs_seq_open(struct inode *inode, struct file *file) | |
259 | { | |
260 | return single_open(file, sctp_assocs_seq_show, NULL); | |
261 | } | |
262 | ||
263 | static struct file_operations sctp_assocs_seq_fops = { | |
264 | .open = sctp_assocs_seq_open, | |
265 | .read = seq_read, | |
266 | .llseek = seq_lseek, | |
267 | .release = single_release, | |
268 | }; | |
269 | ||
270 | /* Set up the proc fs entry for 'assocs' object. */ | |
271 | int __init sctp_assocs_proc_init(void) | |
272 | { | |
273 | struct proc_dir_entry *p; | |
274 | ||
275 | p = create_proc_entry("assocs", S_IRUGO, proc_net_sctp); | |
276 | if (!p) | |
277 | return -ENOMEM; | |
278 | ||
279 | p->proc_fops = &sctp_assocs_seq_fops; | |
280 | ||
281 | return 0; | |
282 | } | |
283 | ||
284 | /* Cleanup the proc fs entry for 'assocs' object. */ | |
285 | void sctp_assocs_proc_exit(void) | |
286 | { | |
287 | remove_proc_entry("assocs", proc_net_sctp); | |
288 | } |