2 #include <linux/inet.h>
3 #include <linux/list.h>
4 #include <linux/module.h>
6 #include <linux/proc_fs.h>
7 #include <linux/rculist.h>
8 #include <linux/seq_file.h>
9 #include <linux/socket.h>
10 #include <net/inet_sock.h>
12 #include <net/net_namespace.h>
13 #include <net/netns/generic.h>
17 struct kcm_seq_muxinfo {
19 const struct file_operations *seq_fops;
20 const struct seq_operations seq_ops;
23 static struct kcm_mux *kcm_get_first(struct seq_file *seq)
25 struct net *net = seq_file_net(seq);
26 struct kcm_net *knet = net_generic(net, kcm_net_id);
28 return list_first_or_null_rcu(&knet->mux_list,
29 struct kcm_mux, kcm_mux_list);
32 static struct kcm_mux *kcm_get_next(struct kcm_mux *mux)
34 struct kcm_net *knet = mux->knet;
36 return list_next_or_null_rcu(&knet->mux_list, &mux->kcm_mux_list,
37 struct kcm_mux, kcm_mux_list);
40 static struct kcm_mux *kcm_get_idx(struct seq_file *seq, loff_t pos)
42 struct net *net = seq_file_net(seq);
43 struct kcm_net *knet = net_generic(net, kcm_net_id);
46 list_for_each_entry_rcu(m, &knet->mux_list, kcm_mux_list) {
54 static void *kcm_seq_next(struct seq_file *seq, void *v, loff_t *pos)
58 if (v == SEQ_START_TOKEN)
59 p = kcm_get_first(seq);
66 static void *kcm_seq_start(struct seq_file *seq, loff_t *pos)
72 return SEQ_START_TOKEN;
74 return kcm_get_idx(seq, *pos - 1);
77 static void kcm_seq_stop(struct seq_file *seq, void *v)
83 struct kcm_proc_mux_state {
84 struct seq_net_private p;
88 static int kcm_seq_open(struct inode *inode, struct file *file)
90 struct kcm_seq_muxinfo *muxinfo = PDE_DATA(inode);
92 return seq_open_net(inode, file, &muxinfo->seq_ops,
93 sizeof(struct kcm_proc_mux_state));
96 static void kcm_format_mux_header(struct seq_file *seq)
98 struct net *net = seq_file_net(seq);
99 struct kcm_net *knet = net_generic(net, kcm_net_id);
102 "*** KCM statistics (%d MUX) ****\n",
106 "%-14s %-10s %-16s %-10s %-16s %-8s %-8s %-8s %-8s %s",
118 /* XXX: pdsts header stuff here */
122 static void kcm_format_sock(struct kcm_sock *kcm, struct seq_file *seq,
126 " kcm-%-7u %-10llu %-16llu %-10llu %-16llu %-8d %-8d %-8d %-8s ",
132 kcm->sk.sk_receive_queue.qlen,
133 sk_rmem_alloc_get(&kcm->sk),
134 kcm->sk.sk_write_queue.qlen,
138 seq_printf(seq, "Psck-%u ", kcm->tx_psock->index);
141 seq_puts(seq, "TxWait ");
143 if (kcm->tx_wait_more)
144 seq_puts(seq, "WMore ");
147 seq_puts(seq, "RxWait ");
152 static void kcm_format_psock(struct kcm_psock *psock, struct seq_file *seq,
156 " psock-%-5u %-10llu %-16llu %-10llu %-16llu %-8d %-8d %-8d %-8d ",
158 psock->strp.stats.rx_msgs,
159 psock->strp.stats.rx_bytes,
160 psock->stats.tx_msgs,
161 psock->stats.tx_bytes,
162 psock->sk->sk_receive_queue.qlen,
163 atomic_read(&psock->sk->sk_rmem_alloc),
164 psock->sk->sk_write_queue.qlen,
165 atomic_read(&psock->sk->sk_wmem_alloc));
168 seq_puts(seq, "Done ");
170 if (psock->tx_stopped)
171 seq_puts(seq, "TxStop ");
173 if (psock->strp.rx_stopped)
174 seq_puts(seq, "RxStop ");
177 seq_printf(seq, "Rsvd-%d ", psock->tx_kcm->index);
179 if (!psock->strp.rx_paused && !psock->ready_rx_msg) {
180 if (psock->sk->sk_receive_queue.qlen) {
181 if (psock->strp.rx_need_bytes)
182 seq_printf(seq, "RxWait=%u ",
183 psock->strp.rx_need_bytes);
185 seq_printf(seq, "RxWait ");
188 if (psock->strp.rx_paused)
189 seq_puts(seq, "RxPause ");
191 if (psock->ready_rx_msg)
192 seq_puts(seq, "RdyRx ");
199 kcm_format_mux(struct kcm_mux *mux, loff_t idx, struct seq_file *seq)
202 struct kcm_sock *kcm;
203 struct kcm_psock *psock;
205 /* mux information */
207 "%-6s%-8s %-10llu %-16llu %-10llu %-16llu %-8s %-8s %-8s %-8s ",
215 seq_printf(seq, "KCMs: %d, Psocks %d\n",
216 mux->kcm_socks_cnt, mux->psocks_cnt);
218 /* kcm sock information */
220 spin_lock_bh(&mux->lock);
221 list_for_each_entry(kcm, &mux->kcm_socks, kcm_sock_list) {
222 kcm_format_sock(kcm, seq, i, &len);
226 list_for_each_entry(psock, &mux->psocks, psock_list) {
227 kcm_format_psock(psock, seq, i, &len);
230 spin_unlock_bh(&mux->lock);
233 static int kcm_seq_show(struct seq_file *seq, void *v)
235 struct kcm_proc_mux_state *mux_state;
237 mux_state = seq->private;
238 if (v == SEQ_START_TOKEN) {
240 kcm_format_mux_header(seq);
242 kcm_format_mux(v, mux_state->idx, seq);
248 static const struct file_operations kcm_seq_fops = {
249 .owner = THIS_MODULE,
250 .open = kcm_seq_open,
253 .release = seq_release_net,
256 static struct kcm_seq_muxinfo kcm_seq_muxinfo = {
258 .seq_fops = &kcm_seq_fops,
260 .show = kcm_seq_show,
261 .start = kcm_seq_start,
262 .next = kcm_seq_next,
263 .stop = kcm_seq_stop,
267 static int kcm_proc_register(struct net *net, struct kcm_seq_muxinfo *muxinfo)
269 struct proc_dir_entry *p;
272 p = proc_create_data(muxinfo->name, S_IRUGO, net->proc_net,
273 muxinfo->seq_fops, muxinfo);
278 EXPORT_SYMBOL(kcm_proc_register);
280 static void kcm_proc_unregister(struct net *net,
281 struct kcm_seq_muxinfo *muxinfo)
283 remove_proc_entry(muxinfo->name, net->proc_net);
285 EXPORT_SYMBOL(kcm_proc_unregister);
287 static int kcm_stats_seq_show(struct seq_file *seq, void *v)
289 struct kcm_psock_stats psock_stats;
290 struct kcm_mux_stats mux_stats;
291 struct strp_aggr_stats strp_stats;
293 struct kcm_psock *psock;
294 struct net *net = seq->private;
295 struct kcm_net *knet = net_generic(net, kcm_net_id);
297 memset(&mux_stats, 0, sizeof(mux_stats));
298 memset(&psock_stats, 0, sizeof(psock_stats));
299 memset(&strp_stats, 0, sizeof(strp_stats));
301 mutex_lock(&knet->mutex);
303 aggregate_mux_stats(&knet->aggregate_mux_stats, &mux_stats);
304 aggregate_psock_stats(&knet->aggregate_psock_stats,
306 aggregate_strp_stats(&knet->aggregate_strp_stats,
309 list_for_each_entry_rcu(mux, &knet->mux_list, kcm_mux_list) {
310 spin_lock_bh(&mux->lock);
311 aggregate_mux_stats(&mux->stats, &mux_stats);
312 aggregate_psock_stats(&mux->aggregate_psock_stats,
314 aggregate_strp_stats(&mux->aggregate_strp_stats,
316 list_for_each_entry(psock, &mux->psocks, psock_list) {
317 aggregate_psock_stats(&psock->stats, &psock_stats);
318 save_strp_stats(&psock->strp, &strp_stats);
321 spin_unlock_bh(&mux->lock);
324 mutex_unlock(&knet->mutex);
327 "%-8s %-10s %-16s %-10s %-16s %-10s %-10s %-10s %-10s %-10s\n",
340 "%-8s %-10llu %-16llu %-10llu %-16llu %-10u %-10u %-10u %-10u %-10u\n",
346 mux_stats.tx_retries,
347 mux_stats.psock_attach,
348 mux_stats.psock_unattach_rsvd,
349 mux_stats.psock_unattach,
350 mux_stats.rx_ready_drops);
353 "%-8s %-10s %-16s %-10s %-16s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s %-10s\n",
372 "%-8s %-10llu %-16llu %-10llu %-16llu %-10llu %-10llu %-10u %-10u %-10u %-10u %-10u %-10u %-10u %-10u %-10u\n",
377 psock_stats.tx_bytes,
378 psock_stats.reserved,
379 psock_stats.unreserved,
380 strp_stats.rx_aborts,
381 strp_stats.rx_interrupted,
382 strp_stats.rx_unrecov_intr,
383 strp_stats.rx_mem_fail,
384 strp_stats.rx_need_more_hdr,
385 strp_stats.rx_bad_hdr_len,
386 strp_stats.rx_msg_too_big,
387 strp_stats.rx_msg_timeouts,
388 psock_stats.tx_aborts);
393 static int kcm_stats_seq_open(struct inode *inode, struct file *file)
395 return single_open_net(inode, file, kcm_stats_seq_show);
398 static const struct file_operations kcm_stats_seq_fops = {
399 .owner = THIS_MODULE,
400 .open = kcm_stats_seq_open,
403 .release = single_release_net,
406 static int kcm_proc_init_net(struct net *net)
410 if (!proc_create("kcm_stats", S_IRUGO, net->proc_net,
411 &kcm_stats_seq_fops)) {
416 err = kcm_proc_register(net, &kcm_seq_muxinfo);
423 remove_proc_entry("kcm_stats", net->proc_net);
428 static void kcm_proc_exit_net(struct net *net)
430 kcm_proc_unregister(net, &kcm_seq_muxinfo);
431 remove_proc_entry("kcm_stats", net->proc_net);
434 static struct pernet_operations kcm_net_ops = {
435 .init = kcm_proc_init_net,
436 .exit = kcm_proc_exit_net,
439 int __init kcm_proc_init(void)
441 return register_pernet_subsys(&kcm_net_ops);
444 void __exit kcm_proc_exit(void)
446 unregister_pernet_subsys(&kcm_net_ops);
449 #endif /* CONFIG_PROC_FS */