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15#include <linux/module.h>
16#include <linux/slab.h>
17
18#include <linux/init.h>
19#include <linux/kernel.h>
20#include <linux/proc_fs.h>
21#include <linux/seq_file.h>
22#include <linux/sunrpc/clnt.h>
23#include <linux/sunrpc/svcsock.h>
24#include <linux/sunrpc/metrics.h>
25#include <linux/rcupdate.h>
26
27#include "netns.h"
28
29#define RPCDBG_FACILITY RPCDBG_MISC
30
31
32
33
34static int rpc_proc_show(struct seq_file *seq, void *v) {
35 const struct rpc_stat *statp = seq->private;
36 const struct rpc_program *prog = statp->program;
37 unsigned int i, j;
38
39 seq_printf(seq,
40 "net %u %u %u %u\n",
41 statp->netcnt,
42 statp->netudpcnt,
43 statp->nettcpcnt,
44 statp->nettcpconn);
45 seq_printf(seq,
46 "rpc %u %u %u\n",
47 statp->rpccnt,
48 statp->rpcretrans,
49 statp->rpcauthrefresh);
50
51 for (i = 0; i < prog->nrvers; i++) {
52 const struct rpc_version *vers = prog->version[i];
53 if (!vers)
54 continue;
55 seq_printf(seq, "proc%u %u",
56 vers->number, vers->nrprocs);
57 for (j = 0; j < vers->nrprocs; j++)
58 seq_printf(seq, " %u", vers->counts[j]);
59 seq_putc(seq, '\n');
60 }
61 return 0;
62}
63
64static int rpc_proc_open(struct inode *inode, struct file *file)
65{
66 return single_open(file, rpc_proc_show, PDE_DATA(inode));
67}
68
69static const struct file_operations rpc_proc_fops = {
70 .owner = THIS_MODULE,
71 .open = rpc_proc_open,
72 .read = seq_read,
73 .llseek = seq_lseek,
74 .release = single_release,
75};
76
77
78
79
80void svc_seq_show(struct seq_file *seq, const struct svc_stat *statp)
81{
82 const struct svc_program *prog = statp->program;
83 const struct svc_version *vers;
84 unsigned int i, j;
85
86 seq_printf(seq,
87 "net %u %u %u %u\n",
88 statp->netcnt,
89 statp->netudpcnt,
90 statp->nettcpcnt,
91 statp->nettcpconn);
92 seq_printf(seq,
93 "rpc %u %u %u %u %u\n",
94 statp->rpccnt,
95 statp->rpcbadfmt+statp->rpcbadauth+statp->rpcbadclnt,
96 statp->rpcbadfmt,
97 statp->rpcbadauth,
98 statp->rpcbadclnt);
99
100 for (i = 0; i < prog->pg_nvers; i++) {
101 vers = prog->pg_vers[i];
102 if (!vers)
103 continue;
104 seq_printf(seq, "proc%d %u", i, vers->vs_nproc);
105 for (j = 0; j < vers->vs_nproc; j++)
106 seq_printf(seq, " %u", vers->vs_count[j]);
107 seq_putc(seq, '\n');
108 }
109}
110EXPORT_SYMBOL_GPL(svc_seq_show);
111
112
113
114
115
116
117struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt)
118{
119 struct rpc_iostats *stats;
120 int i;
121
122 stats = kcalloc(clnt->cl_maxproc, sizeof(*stats), GFP_KERNEL);
123 if (stats) {
124 for (i = 0; i < clnt->cl_maxproc; i++)
125 spin_lock_init(&stats[i].om_lock);
126 }
127 return stats;
128}
129EXPORT_SYMBOL_GPL(rpc_alloc_iostats);
130
131
132
133
134
135
136void rpc_free_iostats(struct rpc_iostats *stats)
137{
138 kfree(stats);
139}
140EXPORT_SYMBOL_GPL(rpc_free_iostats);
141
142
143
144
145
146
147void rpc_count_iostats_metrics(const struct rpc_task *task,
148 struct rpc_iostats *op_metrics)
149{
150 struct rpc_rqst *req = task->tk_rqstp;
151 ktime_t delta, now;
152
153 if (!op_metrics || !req)
154 return;
155
156 now = ktime_get();
157 spin_lock(&op_metrics->om_lock);
158
159 op_metrics->om_ops++;
160
161 op_metrics->om_ntrans += max(req->rq_ntrans, 1);
162 op_metrics->om_timeouts += task->tk_timeouts;
163
164 op_metrics->om_bytes_sent += req->rq_xmit_bytes_sent;
165 op_metrics->om_bytes_recv += req->rq_reply_bytes_recvd;
166
167 if (ktime_to_ns(req->rq_xtime)) {
168 delta = ktime_sub(req->rq_xtime, task->tk_start);
169 op_metrics->om_queue = ktime_add(op_metrics->om_queue, delta);
170 }
171 op_metrics->om_rtt = ktime_add(op_metrics->om_rtt, req->rq_rtt);
172
173 delta = ktime_sub(now, task->tk_start);
174 op_metrics->om_execute = ktime_add(op_metrics->om_execute, delta);
175
176 spin_unlock(&op_metrics->om_lock);
177}
178EXPORT_SYMBOL_GPL(rpc_count_iostats_metrics);
179
180
181
182
183
184
185
186
187void rpc_count_iostats(const struct rpc_task *task, struct rpc_iostats *stats)
188{
189 rpc_count_iostats_metrics(task,
190 &stats[task->tk_msg.rpc_proc->p_statidx]);
191}
192EXPORT_SYMBOL_GPL(rpc_count_iostats);
193
194static void _print_name(struct seq_file *seq, unsigned int op,
195 const struct rpc_procinfo *procs)
196{
197 if (procs[op].p_name)
198 seq_printf(seq, "\t%12s: ", procs[op].p_name);
199 else if (op == 0)
200 seq_printf(seq, "\t NULL: ");
201 else
202 seq_printf(seq, "\t%12u: ", op);
203}
204
205void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt)
206{
207 struct rpc_iostats *stats = clnt->cl_metrics;
208 struct rpc_xprt *xprt;
209 unsigned int op, maxproc = clnt->cl_maxproc;
210
211 if (!stats)
212 return;
213
214 seq_printf(seq, "\tRPC iostats version: %s ", RPC_IOSTATS_VERS);
215 seq_printf(seq, "p/v: %u/%u (%s)\n",
216 clnt->cl_prog, clnt->cl_vers, clnt->cl_program->name);
217
218 rcu_read_lock();
219 xprt = rcu_dereference(clnt->cl_xprt);
220 if (xprt)
221 xprt->ops->print_stats(xprt, seq);
222 rcu_read_unlock();
223
224 seq_printf(seq, "\tper-op statistics\n");
225 for (op = 0; op < maxproc; op++) {
226 struct rpc_iostats *metrics = &stats[op];
227 _print_name(seq, op, clnt->cl_procinfo);
228 seq_printf(seq, "%lu %lu %lu %Lu %Lu %Lu %Lu %Lu\n",
229 metrics->om_ops,
230 metrics->om_ntrans,
231 metrics->om_timeouts,
232 metrics->om_bytes_sent,
233 metrics->om_bytes_recv,
234 ktime_to_ms(metrics->om_queue),
235 ktime_to_ms(metrics->om_rtt),
236 ktime_to_ms(metrics->om_execute));
237 }
238}
239EXPORT_SYMBOL_GPL(rpc_print_iostats);
240
241
242
243
244static inline struct proc_dir_entry *
245do_register(struct net *net, const char *name, void *data,
246 const struct file_operations *fops)
247{
248 struct sunrpc_net *sn;
249
250 dprintk("RPC: registering /proc/net/rpc/%s\n", name);
251 sn = net_generic(net, sunrpc_net_id);
252 return proc_create_data(name, 0, sn->proc_net_rpc, fops, data);
253}
254
255struct proc_dir_entry *
256rpc_proc_register(struct net *net, struct rpc_stat *statp)
257{
258 return do_register(net, statp->program->name, statp, &rpc_proc_fops);
259}
260EXPORT_SYMBOL_GPL(rpc_proc_register);
261
262void
263rpc_proc_unregister(struct net *net, const char *name)
264{
265 struct sunrpc_net *sn;
266
267 sn = net_generic(net, sunrpc_net_id);
268 remove_proc_entry(name, sn->proc_net_rpc);
269}
270EXPORT_SYMBOL_GPL(rpc_proc_unregister);
271
272struct proc_dir_entry *
273svc_proc_register(struct net *net, struct svc_stat *statp, const struct file_operations *fops)
274{
275 return do_register(net, statp->program->pg_name, statp, fops);
276}
277EXPORT_SYMBOL_GPL(svc_proc_register);
278
279void
280svc_proc_unregister(struct net *net, const char *name)
281{
282 struct sunrpc_net *sn;
283
284 sn = net_generic(net, sunrpc_net_id);
285 remove_proc_entry(name, sn->proc_net_rpc);
286}
287EXPORT_SYMBOL_GPL(svc_proc_unregister);
288
289int rpc_proc_init(struct net *net)
290{
291 struct sunrpc_net *sn;
292
293 dprintk("RPC: registering /proc/net/rpc\n");
294 sn = net_generic(net, sunrpc_net_id);
295 sn->proc_net_rpc = proc_mkdir("rpc", net->proc_net);
296 if (sn->proc_net_rpc == NULL)
297 return -ENOMEM;
298
299 return 0;
300}
301
302void rpc_proc_exit(struct net *net)
303{
304 dprintk("RPC: unregistering /proc/net/rpc\n");
305 remove_proc_entry("rpc", net->proc_net);
306}
307
308
