1 /* 2 * linux/net/sunrpc/stats.c 3 * 4 * procfs-based user access to generic RPC statistics. The stats files 5 * reside in /proc/net/rpc. 6 * 7 * The read routines assume that the buffer passed in is just big enough. 8 * If you implement an RPC service that has its own stats routine which 9 * appends the generic RPC stats, make sure you don't exceed the PAGE_SIZE 10 * limit. 11 * 12 * Copyright (C) 1995, 1996, 1997 Olaf Kirch <okir@monad.swb.de> 13 */ 14 15 #include <linux/module.h> 16 17 #include <linux/init.h> 18 #include <linux/kernel.h> 19 #include <linux/sched.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 25 #define RPCDBG_FACILITY RPCDBG_MISC 26 27 struct proc_dir_entry *proc_net_rpc = NULL; 28 29 /* 30 * Get RPC client stats 31 */ 32 static int rpc_proc_show(struct seq_file *seq, void *v) { 33 const struct rpc_stat *statp = seq->private; 34 const struct rpc_program *prog = statp->program; 35 int i, j; 36 37 seq_printf(seq, 38 "net %u %u %u %u\n", 39 statp->netcnt, 40 statp->netudpcnt, 41 statp->nettcpcnt, 42 statp->nettcpconn); 43 seq_printf(seq, 44 "rpc %u %u %u\n", 45 statp->rpccnt, 46 statp->rpcretrans, 47 statp->rpcauthrefresh); 48 49 for (i = 0; i < prog->nrvers; i++) { 50 const struct rpc_version *vers = prog->version[i]; 51 if (!vers) 52 continue; 53 seq_printf(seq, "proc%u %u", 54 vers->number, vers->nrprocs); 55 for (j = 0; j < vers->nrprocs; j++) 56 seq_printf(seq, " %u", 57 vers->procs[j].p_count); 58 seq_putc(seq, '\n'); 59 } 60 return 0; 61 } 62 63 static int rpc_proc_open(struct inode *inode, struct file *file) 64 { 65 return single_open(file, rpc_proc_show, PDE(inode)->data); 66 } 67 68 static struct file_operations rpc_proc_fops = { 69 .owner = THIS_MODULE, 70 .open = rpc_proc_open, 71 .read = seq_read, 72 .llseek = seq_lseek, 73 .release = single_release, 74 }; 75 76 /* 77 * Get RPC server stats 78 */ 79 void svc_seq_show(struct seq_file *seq, const struct svc_stat *statp) { 80 const struct svc_program *prog = statp->program; 81 const struct svc_procedure *proc; 82 const struct svc_version *vers; 83 int i, j; 84 85 seq_printf(seq, 86 "net %u %u %u %u\n", 87 statp->netcnt, 88 statp->netudpcnt, 89 statp->nettcpcnt, 90 statp->nettcpconn); 91 seq_printf(seq, 92 "rpc %u %u %u %u %u\n", 93 statp->rpccnt, 94 statp->rpcbadfmt+statp->rpcbadauth+statp->rpcbadclnt, 95 statp->rpcbadfmt, 96 statp->rpcbadauth, 97 statp->rpcbadclnt); 98 99 for (i = 0; i < prog->pg_nvers; i++) { 100 if (!(vers = prog->pg_vers[i]) || !(proc = vers->vs_proc)) 101 continue; 102 seq_printf(seq, "proc%d %u", i, vers->vs_nproc); 103 for (j = 0; j < vers->vs_nproc; j++, proc++) 104 seq_printf(seq, " %u", proc->pc_count); 105 seq_putc(seq, '\n'); 106 } 107 } 108 109 /* 110 * Register/unregister RPC proc files 111 */ 112 static inline struct proc_dir_entry * 113 do_register(const char *name, void *data, struct file_operations *fops) 114 { 115 struct proc_dir_entry *ent; 116 117 rpc_proc_init(); 118 dprintk("RPC: registering /proc/net/rpc/%s\n", name); 119 120 ent = create_proc_entry(name, 0, proc_net_rpc); 121 if (ent) { 122 ent->proc_fops = fops; 123 ent->data = data; 124 } 125 return ent; 126 } 127 128 struct proc_dir_entry * 129 rpc_proc_register(struct rpc_stat *statp) 130 { 131 return do_register(statp->program->name, statp, &rpc_proc_fops); 132 } 133 134 void 135 rpc_proc_unregister(const char *name) 136 { 137 remove_proc_entry(name, proc_net_rpc); 138 } 139 140 struct proc_dir_entry * 141 svc_proc_register(struct svc_stat *statp, struct file_operations *fops) 142 { 143 return do_register(statp->program->pg_name, statp, fops); 144 } 145 146 void 147 svc_proc_unregister(const char *name) 148 { 149 remove_proc_entry(name, proc_net_rpc); 150 } 151 152 void 153 rpc_proc_init(void) 154 { 155 dprintk("RPC: registering /proc/net/rpc\n"); 156 if (!proc_net_rpc) { 157 struct proc_dir_entry *ent; 158 ent = proc_mkdir("rpc", proc_net); 159 if (ent) { 160 ent->owner = THIS_MODULE; 161 proc_net_rpc = ent; 162 } 163 } 164 } 165 166 void 167 rpc_proc_exit(void) 168 { 169 dprintk("RPC: unregistering /proc/net/rpc\n"); 170 if (proc_net_rpc) { 171 proc_net_rpc = NULL; 172 remove_proc_entry("net/rpc", NULL); 173 } 174 } 175 176