aboutsummaryrefslogtreecommitdiffstats
path: root/net/sunrpc/stats.c
blob: 4979f226e285f57117cc8daa71667f64549b0b7a (plain)
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
163
164
165
166
167
168
169
170
171
172
173
174
175
/*
 * linux/net/sunrpc/stats.c
 *
 * procfs-based user access to generic RPC statistics. The stats files
 * reside in /proc/net/rpc.
 *
 * The read routines assume that the buffer passed in is just big enough.
 * If you implement an RPC service that has its own stats routine which
 * appends the generic RPC stats, make sure you don't exceed the PAGE_SIZE
 * limit.
 *
 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de>
 */

#include <linux/module.h>

#include <linux/init.h>
#include <linux/kernel.h>
#include <linux/sched.h>
#include <linux/proc_fs.h>
#include <linux/seq_file.h>
#include <linux/sunrpc/clnt.h>
#include <linux/sunrpc/svcsock.h>

#define RPCDBG_FACILITY	RPCDBG_MISC

struct proc_dir_entry	*proc_net_rpc = NULL;

/*
 * Get RPC client stats
 */
static int rpc_proc_show(struct seq_file *seq, void *v) {
	const struct rpc_stat	*statp = seq->private;
	const struct rpc_program *prog = statp->program;
	int		i, j;

	seq_printf(seq,
		"net %u %u %u %u\n",
			statp->netcnt,
			statp->netudpcnt,
			statp->nettcpcnt,
			statp->nettcpconn);
	seq_printf(seq,
		"rpc %u %u %u\n",
			statp->rpccnt,
			statp->rpcretrans,
			statp->rpcauthrefresh);

	for (i = 0; i < prog->nrvers; i++) {
		const struct rpc_version *vers = prog->version[i];
		if (!vers)
			continue;
		seq_printf(seq, "proc%u %u",
					vers->number, vers->nrprocs);
		for (j = 0; j < vers->nrprocs; j++)
			seq_printf(seq, " %u",
					vers->procs[j].p_count);
		seq_putc(seq, '\n');
	}
	return 0;
}

static int rpc_proc_open(struct inode *inode, struct file *file)
{
	return single_open(file, rpc_proc_show, PDE(inode)->data);
}

static struct file_operations rpc_proc_fops = {
	.owner = THIS_MODULE,
	.open = rpc_proc_open,
	.read  = seq_read,
	.llseek = seq_lseek,
	.release = single_release,
};

/*
 * Get RPC server stats
 */
void svc_seq_show(struct seq_file *seq, const struct svc_stat *statp) {
	const struct svc_program *prog = statp->program;
	const struct svc_procedure *proc;
	const struct svc_version *vers;
	int		i, j;

	seq_printf(seq,
		"net %u %u %u %u\n",
			statp->netcnt,
			statp->netudpcnt,
			statp->nettcpcnt,
			statp->nettcpconn);
	seq_printf(seq,
		"rpc %u %u %u %u %u\n",
			statp->rpccnt,
			statp->rpcbadfmt+statp->rpcbadauth+statp->rpcbadclnt,
			statp->rpcbadfmt,
			statp->rpcbadauth,
			statp->rpcbadclnt);

	for (i = 0; i < prog->pg_nvers; i++) {
		if (!(vers = prog->pg_vers[i]) || !(proc = vers->vs_proc))
			continue;
		seq_printf(seq, "proc%d %u", i, vers->vs_nproc);
		for (j = 0; j < vers->vs_nproc; j++, proc++)
			seq_printf(seq, " %u", proc->pc_count);
		seq_putc(seq, '\n');
	}
}

/*
 * Register/unregister RPC proc files
 */
static inline struct proc_dir_entry *
do_register(const char *name, void *data, struct file_operations *fops)
{
	struct proc_dir_entry *ent;

	rpc_proc_init();
	dprintk("RPC: registering /proc/net/rpc/%s\n", name);

	ent = create_proc_entry(name, 0, proc_net_rpc);
	if (ent) {
		ent->proc_fops = fops;
		ent->data = data;
	}
	return ent;
}

struct proc_dir_entry *
rpc_proc_register(struct rpc_stat *statp)
{
	return do_register(statp->program->name, statp, &rpc_proc_fops);
}

void
rpc_proc_unregister(const char *name)
{
	remove_proc_entry(name, proc_net_rpc);
}

struct proc_dir_entry *
svc_proc_register(struct svc_stat *statp, struct file_operations *fops)
{
	return do_register(statp->program->pg_name, statp, fops);
}

void
svc_proc_unregister(const char *name)
{
	remove_proc_entry(name, proc_net_rpc);
}

void
rpc_proc_init(void)
{
	dprintk("RPC: registering /proc/net/rpc\n");
	if (!proc_net_rpc) {
		struct proc_dir_entry *ent;
		ent = proc_mkdir("rpc", proc_net);
		if (ent) {
			ent->owner = THIS_MODULE;
			proc_net_rpc = ent;
		}
	}
}

void
rpc_proc_exit(void)
{
	dprintk("RPC: unregistering /proc/net/rpc\n");
	if (proc_net_rpc) {
		proc_net_rpc = NULL;
		remove_proc_entry("net/rpc", NULL);
	}
}