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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",
59 vers->procs[j].p_count);
60 seq_putc(seq, '\n');
61 }
62 return 0;
63}
64
65static int rpc_proc_open(struct inode *inode, struct file *file)
66{
67 return single_open(file, rpc_proc_show, PDE_DATA(inode));
68}
69
70static const struct file_operations rpc_proc_fops = {
71 .owner = THIS_MODULE,
72 .open = rpc_proc_open,
73 .read = seq_read,
74 .llseek = seq_lseek,
75 .release = single_release,
76};
77
78
79
80
81void svc_seq_show(struct seq_file *seq, const struct svc_stat *statp) {
82 const struct svc_program *prog = statp->program;
83 const struct svc_procedure *proc;
84 const struct svc_version *vers;
85 unsigned int i, j;
86
87 seq_printf(seq,
88 "net %u %u %u %u\n",
89 statp->netcnt,
90 statp->netudpcnt,
91 statp->nettcpcnt,
92 statp->nettcpconn);
93 seq_printf(seq,
94 "rpc %u %u %u %u %u\n",
95 statp->rpccnt,
96 statp->rpcbadfmt+statp->rpcbadauth+statp->rpcbadclnt,
97 statp->rpcbadfmt,
98 statp->rpcbadauth,
99 statp->rpcbadclnt);
100
101 for (i = 0; i < prog->pg_nvers; i++) {
102 if (!(vers = prog->pg_vers[i]) || !(proc = vers->vs_proc))
103 continue;
104 seq_printf(seq, "proc%d %u", i, vers->vs_nproc);
105 for (j = 0; j < vers->vs_nproc; j++, proc++)
106 seq_printf(seq, " %u", proc->pc_count);
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 return kcalloc(clnt->cl_maxproc, sizeof(struct rpc_iostats), GFP_KERNEL);
120}
121EXPORT_SYMBOL_GPL(rpc_alloc_iostats);
122
123
124
125
126
127
128void rpc_free_iostats(struct rpc_iostats *stats)
129{
130 kfree(stats);
131}
132EXPORT_SYMBOL_GPL(rpc_free_iostats);
133
134
135
136
137
138
139
140
141void rpc_count_iostats(const struct rpc_task *task, struct rpc_iostats *stats)
142{
143 struct rpc_rqst *req = task->tk_rqstp;
144 struct rpc_iostats *op_metrics;
145 ktime_t delta;
146
147 if (!stats || !req)
148 return;
149
150 op_metrics = &stats[task->tk_msg.rpc_proc->p_statidx];
151
152 op_metrics->om_ops++;
153 op_metrics->om_ntrans += req->rq_ntrans;
154 op_metrics->om_timeouts += task->tk_timeouts;
155
156 op_metrics->om_bytes_sent += req->rq_xmit_bytes_sent;
157 op_metrics->om_bytes_recv += req->rq_reply_bytes_recvd;
158
159 delta = ktime_sub(req->rq_xtime, task->tk_start);
160 op_metrics->om_queue = ktime_add(op_metrics->om_queue, delta);
161
162 op_metrics->om_rtt = ktime_add(op_metrics->om_rtt, req->rq_rtt);
163
164 delta = ktime_sub(ktime_get(), task->tk_start);
165 op_metrics->om_execute = ktime_add(op_metrics->om_execute, delta);
166}
167EXPORT_SYMBOL_GPL(rpc_count_iostats);
168
169static void _print_name(struct seq_file *seq, unsigned int op,
170 struct rpc_procinfo *procs)
171{
172 if (procs[op].p_name)
173 seq_printf(seq, "\t%12s: ", procs[op].p_name);
174 else if (op == 0)
175 seq_printf(seq, "\t NULL: ");
176 else
177 seq_printf(seq, "\t%12u: ", op);
178}
179
180void rpc_print_iostats(struct seq_file *seq, struct rpc_clnt *clnt)
181{
182 struct rpc_iostats *stats = clnt->cl_metrics;
183 struct rpc_xprt *xprt;
184 unsigned int op, maxproc = clnt->cl_maxproc;
185
186 if (!stats)
187 return;
188
189 seq_printf(seq, "\tRPC iostats version: %s ", RPC_IOSTATS_VERS);
190 seq_printf(seq, "p/v: %u/%u (%s)\n",
191 clnt->cl_prog, clnt->cl_vers, clnt->cl_protname);
192
193 rcu_read_lock();
194 xprt = rcu_dereference(clnt->cl_xprt);
195 if (xprt)
196 xprt->ops->print_stats(xprt, seq);
197 rcu_read_unlock();
198
199 seq_printf(seq, "\tper-op statistics\n");
200 for (op = 0; op < maxproc; op++) {
201 struct rpc_iostats *metrics = &stats[op];
202 _print_name(seq, op, clnt->cl_procinfo);
203 seq_printf(seq, "%lu %lu %lu %Lu %Lu %Lu %Lu %Lu\n",
204 metrics->om_ops,
205 metrics->om_ntrans,
206 metrics->om_timeouts,
207 metrics->om_bytes_sent,
208 metrics->om_bytes_recv,
209 ktime_to_ms(metrics->om_queue),
210 ktime_to_ms(metrics->om_rtt),
211 ktime_to_ms(metrics->om_execute));
212 }
213}
214EXPORT_SYMBOL_GPL(rpc_print_iostats);
215
216
217
218
219static inline struct proc_dir_entry *
220do_register(struct net *net, const char *name, void *data,
221 const struct file_operations *fops)
222{
223 struct sunrpc_net *sn;
224
225 dprintk("RPC: registering /proc/net/rpc/%s\n", name);
226 sn = net_generic(net, sunrpc_net_id);
227 return proc_create_data(name, 0, sn->proc_net_rpc, fops, data);
228}
229
230struct proc_dir_entry *
231rpc_proc_register(struct net *net, struct rpc_stat *statp)
232{
233 return do_register(net, statp->program->name, statp, &rpc_proc_fops);
234}
235EXPORT_SYMBOL_GPL(rpc_proc_register);
236
237void
238rpc_proc_unregister(struct net *net, const char *name)
239{
240 struct sunrpc_net *sn;
241
242 sn = net_generic(net, sunrpc_net_id);
243 remove_proc_entry(name, sn->proc_net_rpc);
244}
245EXPORT_SYMBOL_GPL(rpc_proc_unregister);
246
247struct proc_dir_entry *
248svc_proc_register(struct net *net, struct svc_stat *statp, const struct file_operations *fops)
249{
250 return do_register(net, statp->program->pg_name, statp, fops);
251}
252EXPORT_SYMBOL_GPL(svc_proc_register);
253
254void
255svc_proc_unregister(struct net *net, const char *name)
256{
257 struct sunrpc_net *sn;
258
259 sn = net_generic(net, sunrpc_net_id);
260 remove_proc_entry(name, sn->proc_net_rpc);
261}
262EXPORT_SYMBOL_GPL(svc_proc_unregister);
263
264int rpc_proc_init(struct net *net)
265{
266 struct sunrpc_net *sn;
267
268 dprintk("RPC: registering /proc/net/rpc\n");
269 sn = net_generic(net, sunrpc_net_id);
270 sn->proc_net_rpc = proc_mkdir("rpc", net->proc_net);
271 if (sn->proc_net_rpc == NULL)
272 return -ENOMEM;
273
274 return 0;
275}
276
277void rpc_proc_exit(struct net *net)
278{
279 dprintk("RPC: unregistering /proc/net/rpc\n");
280 remove_proc_entry("rpc", net->proc_net);
281}
282
283
