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15#include <linux/module.h>
16
17#include <linux/init.h>
18#include <linux/kernel.h>
19#include <linux/proc_fs.h>
20#include <linux/seq_file.h>
21#include <linux/sunrpc/clnt.h>
22#include <linux/sunrpc/svcsock.h>
23#include <linux/sunrpc/metrics.h>
24#include <net/net_namespace.h>
25
26#define RPCDBG_FACILITY RPCDBG_MISC
27
28struct proc_dir_entry *proc_net_rpc = NULL;
29
30
31
32
33static int rpc_proc_show(struct seq_file *seq, void *v) {
34 const struct rpc_stat *statp = seq->private;
35 const struct rpc_program *prog = statp->program;
36 unsigned int i, j;
37
38 seq_printf(seq,
39 "net %u %u %u %u\n",
40 statp->netcnt,
41 statp->netudpcnt,
42 statp->nettcpcnt,
43 statp->nettcpconn);
44 seq_printf(seq,
45 "rpc %u %u %u\n",
46 statp->rpccnt,
47 statp->rpcretrans,
48 statp->rpcauthrefresh);
49
50 for (i = 0; i < prog->nrvers; i++) {
51 const struct rpc_version *vers = prog->version[i];
52 if (!vers)
53 continue;
54 seq_printf(seq, "proc%u %u",
55 vers->number, vers->nrprocs);
56 for (j = 0; j < vers->nrprocs; j++)
57 seq_printf(seq, " %u",
58 vers->procs[j].p_count);
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(inode)->data);
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 const struct svc_program *prog = statp->program;
82 const struct svc_procedure *proc;
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 if (!(vers = prog->pg_vers[i]) || !(proc = vers->vs_proc))
102 continue;
103 seq_printf(seq, "proc%d %u", i, vers->vs_nproc);
104 for (j = 0; j < vers->vs_nproc; j++, proc++)
105 seq_printf(seq, " %u", proc->pc_count);
106 seq_putc(seq, '\n');
107 }
108}
109EXPORT_SYMBOL_GPL(svc_seq_show);
110
111
112
113
114
115
116struct rpc_iostats *rpc_alloc_iostats(struct rpc_clnt *clnt)
117{
118 struct rpc_iostats *new;
119 new = kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL);
120 return new;
121}
122EXPORT_SYMBOL_GPL(rpc_alloc_iostats);
123
124
125
126
127
128
129void rpc_free_iostats(struct rpc_iostats *stats)
130{
131 kfree(stats);
132}
133EXPORT_SYMBOL_GPL(rpc_free_iostats);
134
135
136
137
138
139
140
141void rpc_count_iostats(struct rpc_task *task)
142{
143 struct rpc_rqst *req = task->tk_rqstp;
144 struct rpc_iostats *stats;
145 struct rpc_iostats *op_metrics;
146 long rtt, execute, queue;
147
148 if (!task->tk_client || !task->tk_client->cl_metrics || !req)
149 return;
150
151 stats = task->tk_client->cl_metrics;
152 op_metrics = &stats[task->tk_msg.rpc_proc->p_statidx];
153
154 op_metrics->om_ops++;
155 op_metrics->om_ntrans += req->rq_ntrans;
156 op_metrics->om_timeouts += task->tk_timeouts;
157
158 op_metrics->om_bytes_sent += task->tk_bytes_sent;
159 op_metrics->om_bytes_recv += req->rq_reply_bytes_recvd;
160
161 queue = (long)req->rq_xtime - task->tk_start;
162 if (queue < 0)
163 queue = -queue;
164 op_metrics->om_queue += queue;
165
166 rtt = task->tk_rtt;
167 if (rtt < 0)
168 rtt = -rtt;
169 op_metrics->om_rtt += rtt;
170
171 execute = (long)jiffies - task->tk_start;
172 if (execute < 0)
173 execute = -execute;
174 op_metrics->om_execute += execute;
175}
176
177static void _print_name(struct seq_file *seq, unsigned int op,
178 struct rpc_procinfo *procs)
179{
180 if (procs[op].p_name)
181 seq_printf(seq, "\t%12s: ", procs[op].p_name);
182 else if (op == 0)
183 seq_printf(seq, "\t NULL: ");
184 else
185 seq_printf(seq, "\t%12u: ", op);
186}
187
188#define MILLISECS_PER_JIFFY (1000 / HZ)
189
190void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt)
191{
192 struct rpc_iostats *stats = clnt->cl_metrics;
193 struct rpc_xprt *xprt = clnt->cl_xprt;
194 unsigned int op, maxproc = clnt->cl_maxproc;
195
196 if (!stats)
197 return;
198
199 seq_printf(seq, "\tRPC iostats version: %s ", RPC_IOSTATS_VERS);
200 seq_printf(seq, "p/v: %u/%u (%s)\n",
201 clnt->cl_prog, clnt->cl_vers, clnt->cl_protname);
202
203 if (xprt)
204 xprt->ops->print_stats(xprt, seq);
205
206 seq_printf(seq, "\tper-op statistics\n");
207 for (op = 0; op < maxproc; op++) {
208 struct rpc_iostats *metrics = &stats[op];
209 _print_name(seq, op, clnt->cl_procinfo);
210 seq_printf(seq, "%lu %lu %lu %Lu %Lu %Lu %Lu %Lu\n",
211 metrics->om_ops,
212 metrics->om_ntrans,
213 metrics->om_timeouts,
214 metrics->om_bytes_sent,
215 metrics->om_bytes_recv,
216 metrics->om_queue * MILLISECS_PER_JIFFY,
217 metrics->om_rtt * MILLISECS_PER_JIFFY,
218 metrics->om_execute * MILLISECS_PER_JIFFY);
219 }
220}
221EXPORT_SYMBOL_GPL(rpc_print_iostats);
222
223
224
225
226static inline struct proc_dir_entry *
227do_register(const char *name, void *data, const struct file_operations *fops)
228{
229 rpc_proc_init();
230 dprintk("RPC: registering /proc/net/rpc/%s\n", name);
231
232 return proc_create_data(name, 0, proc_net_rpc, fops, data);
233}
234
235struct proc_dir_entry *
236rpc_proc_register(struct rpc_stat *statp)
237{
238 return do_register(statp->program->name, statp, &rpc_proc_fops);
239}
240EXPORT_SYMBOL_GPL(rpc_proc_register);
241
242void
243rpc_proc_unregister(const char *name)
244{
245 remove_proc_entry(name, proc_net_rpc);
246}
247EXPORT_SYMBOL_GPL(rpc_proc_unregister);
248
249struct proc_dir_entry *
250svc_proc_register(struct svc_stat *statp, const struct file_operations *fops)
251{
252 return do_register(statp->program->pg_name, statp, fops);
253}
254EXPORT_SYMBOL_GPL(svc_proc_register);
255
256void
257svc_proc_unregister(const char *name)
258{
259 remove_proc_entry(name, proc_net_rpc);
260}
261EXPORT_SYMBOL_GPL(svc_proc_unregister);
262
263void
264rpc_proc_init(void)
265{
266 dprintk("RPC: registering /proc/net/rpc\n");
267 if (!proc_net_rpc)
268 proc_net_rpc = proc_mkdir("rpc", init_net.proc_net);
269}
270
271void
272rpc_proc_exit(void)
273{
274 dprintk("RPC: unregistering /proc/net/rpc\n");
275 if (proc_net_rpc) {
276 proc_net_rpc = NULL;
277 remove_proc_entry("rpc", init_net.proc_net);
278 }
279}
280
281
