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-rw-r--r--net/rxrpc/proc.c617
1 files changed, 617 insertions, 0 deletions
diff --git a/net/rxrpc/proc.c b/net/rxrpc/proc.c
new file mode 100644
index 00000000000..3b5ecd8e240
--- /dev/null
+++ b/net/rxrpc/proc.c
@@ -0,0 +1,617 @@
+/* proc.c: /proc interface for RxRPC
+ *
+ * Copyright (C) 2002 Red Hat, Inc. All Rights Reserved.
+ * Written by David Howells (dhowells@redhat.com)
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License
+ * as published by the Free Software Foundation; either version
+ * 2 of the License, or (at your option) any later version.
+ */
+
+#include <linux/sched.h>
+#include <linux/slab.h>
+#include <linux/module.h>
+#include <linux/proc_fs.h>
+#include <linux/seq_file.h>
+#include <rxrpc/rxrpc.h>
+#include <rxrpc/transport.h>
+#include <rxrpc/peer.h>
+#include <rxrpc/connection.h>
+#include <rxrpc/call.h>
+#include <rxrpc/message.h>
+#include "internal.h"
+
+static struct proc_dir_entry *proc_rxrpc;
+
+static int rxrpc_proc_transports_open(struct inode *inode, struct file *file);
+static void *rxrpc_proc_transports_start(struct seq_file *p, loff_t *pos);
+static void *rxrpc_proc_transports_next(struct seq_file *p, void *v, loff_t *pos);
+static void rxrpc_proc_transports_stop(struct seq_file *p, void *v);
+static int rxrpc_proc_transports_show(struct seq_file *m, void *v);
+
+static struct seq_operations rxrpc_proc_transports_ops = {
+ .start = rxrpc_proc_transports_start,
+ .next = rxrpc_proc_transports_next,
+ .stop = rxrpc_proc_transports_stop,
+ .show = rxrpc_proc_transports_show,
+};
+
+static struct file_operations rxrpc_proc_transports_fops = {
+ .open = rxrpc_proc_transports_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static int rxrpc_proc_peers_open(struct inode *inode, struct file *file);
+static void *rxrpc_proc_peers_start(struct seq_file *p, loff_t *pos);
+static void *rxrpc_proc_peers_next(struct seq_file *p, void *v, loff_t *pos);
+static void rxrpc_proc_peers_stop(struct seq_file *p, void *v);
+static int rxrpc_proc_peers_show(struct seq_file *m, void *v);
+
+static struct seq_operations rxrpc_proc_peers_ops = {
+ .start = rxrpc_proc_peers_start,
+ .next = rxrpc_proc_peers_next,
+ .stop = rxrpc_proc_peers_stop,
+ .show = rxrpc_proc_peers_show,
+};
+
+static struct file_operations rxrpc_proc_peers_fops = {
+ .open = rxrpc_proc_peers_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static int rxrpc_proc_conns_open(struct inode *inode, struct file *file);
+static void *rxrpc_proc_conns_start(struct seq_file *p, loff_t *pos);
+static void *rxrpc_proc_conns_next(struct seq_file *p, void *v, loff_t *pos);
+static void rxrpc_proc_conns_stop(struct seq_file *p, void *v);
+static int rxrpc_proc_conns_show(struct seq_file *m, void *v);
+
+static struct seq_operations rxrpc_proc_conns_ops = {
+ .start = rxrpc_proc_conns_start,
+ .next = rxrpc_proc_conns_next,
+ .stop = rxrpc_proc_conns_stop,
+ .show = rxrpc_proc_conns_show,
+};
+
+static struct file_operations rxrpc_proc_conns_fops = {
+ .open = rxrpc_proc_conns_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static int rxrpc_proc_calls_open(struct inode *inode, struct file *file);
+static void *rxrpc_proc_calls_start(struct seq_file *p, loff_t *pos);
+static void *rxrpc_proc_calls_next(struct seq_file *p, void *v, loff_t *pos);
+static void rxrpc_proc_calls_stop(struct seq_file *p, void *v);
+static int rxrpc_proc_calls_show(struct seq_file *m, void *v);
+
+static struct seq_operations rxrpc_proc_calls_ops = {
+ .start = rxrpc_proc_calls_start,
+ .next = rxrpc_proc_calls_next,
+ .stop = rxrpc_proc_calls_stop,
+ .show = rxrpc_proc_calls_show,
+};
+
+static struct file_operations rxrpc_proc_calls_fops = {
+ .open = rxrpc_proc_calls_open,
+ .read = seq_read,
+ .llseek = seq_lseek,
+ .release = seq_release,
+};
+
+static const char *rxrpc_call_states7[] = {
+ "complet",
+ "error ",
+ "rcv_op ",
+ "rcv_arg",
+ "got_arg",
+ "snd_rpl",
+ "fin_ack",
+ "snd_arg",
+ "rcv_rpl",
+ "got_rpl"
+};
+
+static const char *rxrpc_call_error_states7[] = {
+ "no_err ",
+ "loc_abt",
+ "rmt_abt",
+ "loc_err",
+ "rmt_err"
+};
+
+/*****************************************************************************/
+/*
+ * initialise the /proc/net/rxrpc/ directory
+ */
+int rxrpc_proc_init(void)
+{
+ struct proc_dir_entry *p;
+
+ proc_rxrpc = proc_mkdir("rxrpc", proc_net);
+ if (!proc_rxrpc)
+ goto error;
+ proc_rxrpc->owner = THIS_MODULE;
+
+ p = create_proc_entry("calls", 0, proc_rxrpc);
+ if (!p)
+ goto error_proc;
+ p->proc_fops = &rxrpc_proc_calls_fops;
+ p->owner = THIS_MODULE;
+
+ p = create_proc_entry("connections", 0, proc_rxrpc);
+ if (!p)
+ goto error_calls;
+ p->proc_fops = &rxrpc_proc_conns_fops;
+ p->owner = THIS_MODULE;
+
+ p = create_proc_entry("peers", 0, proc_rxrpc);
+ if (!p)
+ goto error_calls;
+ p->proc_fops = &rxrpc_proc_peers_fops;
+ p->owner = THIS_MODULE;
+
+ p = create_proc_entry("transports", 0, proc_rxrpc);
+ if (!p)
+ goto error_conns;
+ p->proc_fops = &rxrpc_proc_transports_fops;
+ p->owner = THIS_MODULE;
+
+ return 0;
+
+ error_conns:
+ remove_proc_entry("connections", proc_rxrpc);
+ error_calls:
+ remove_proc_entry("calls", proc_rxrpc);
+ error_proc:
+ remove_proc_entry("rxrpc", proc_net);
+ error:
+ return -ENOMEM;
+} /* end rxrpc_proc_init() */
+
+/*****************************************************************************/
+/*
+ * clean up the /proc/net/rxrpc/ directory
+ */
+void rxrpc_proc_cleanup(void)
+{
+ remove_proc_entry("transports", proc_rxrpc);
+ remove_proc_entry("peers", proc_rxrpc);
+ remove_proc_entry("connections", proc_rxrpc);
+ remove_proc_entry("calls", proc_rxrpc);
+
+ remove_proc_entry("rxrpc", proc_net);
+
+} /* end rxrpc_proc_cleanup() */
+
+/*****************************************************************************/
+/*
+ * open "/proc/net/rxrpc/transports" which provides a summary of extant transports
+ */
+static int rxrpc_proc_transports_open(struct inode *inode, struct file *file)
+{
+ struct seq_file *m;
+ int ret;
+
+ ret = seq_open(file, &rxrpc_proc_transports_ops);
+ if (ret < 0)
+ return ret;
+
+ m = file->private_data;
+ m->private = PDE(inode)->data;
+
+ return 0;
+} /* end rxrpc_proc_transports_open() */
+
+/*****************************************************************************/
+/*
+ * set up the iterator to start reading from the transports list and return the first item
+ */
+static void *rxrpc_proc_transports_start(struct seq_file *m, loff_t *_pos)
+{
+ struct list_head *_p;
+ loff_t pos = *_pos;
+
+ /* lock the list against modification */
+ down_read(&rxrpc_proc_transports_sem);
+
+ /* allow for the header line */
+ if (!pos)
+ return SEQ_START_TOKEN;
+ pos--;
+
+ /* find the n'th element in the list */
+ list_for_each(_p, &rxrpc_proc_transports)
+ if (!pos--)
+ break;
+
+ return _p != &rxrpc_proc_transports ? _p : NULL;
+} /* end rxrpc_proc_transports_start() */
+
+/*****************************************************************************/
+/*
+ * move to next call in transports list
+ */
+static void *rxrpc_proc_transports_next(struct seq_file *p, void *v, loff_t *pos)
+{
+ struct list_head *_p;
+
+ (*pos)++;
+
+ _p = v;
+ _p = (v == SEQ_START_TOKEN) ? rxrpc_proc_transports.next : _p->next;
+
+ return _p != &rxrpc_proc_transports ? _p : NULL;
+} /* end rxrpc_proc_transports_next() */
+
+/*****************************************************************************/
+/*
+ * clean up after reading from the transports list
+ */
+static void rxrpc_proc_transports_stop(struct seq_file *p, void *v)
+{
+ up_read(&rxrpc_proc_transports_sem);
+
+} /* end rxrpc_proc_transports_stop() */
+
+/*****************************************************************************/
+/*
+ * display a header line followed by a load of call lines
+ */
+static int rxrpc_proc_transports_show(struct seq_file *m, void *v)
+{
+ struct rxrpc_transport *trans =
+ list_entry(v, struct rxrpc_transport, proc_link);
+
+ /* display header on line 1 */
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(m, "LOCAL USE\n");
+ return 0;
+ }
+
+ /* display one transport per line on subsequent lines */
+ seq_printf(m, "%5hu %3d\n",
+ trans->port,
+ atomic_read(&trans->usage)
+ );
+
+ return 0;
+} /* end rxrpc_proc_transports_show() */
+
+/*****************************************************************************/
+/*
+ * open "/proc/net/rxrpc/peers" which provides a summary of extant peers
+ */
+static int rxrpc_proc_peers_open(struct inode *inode, struct file *file)
+{
+ struct seq_file *m;
+ int ret;
+
+ ret = seq_open(file, &rxrpc_proc_peers_ops);
+ if (ret < 0)
+ return ret;
+
+ m = file->private_data;
+ m->private = PDE(inode)->data;
+
+ return 0;
+} /* end rxrpc_proc_peers_open() */
+
+/*****************************************************************************/
+/*
+ * set up the iterator to start reading from the peers list and return the
+ * first item
+ */
+static void *rxrpc_proc_peers_start(struct seq_file *m, loff_t *_pos)
+{
+ struct list_head *_p;
+ loff_t pos = *_pos;
+
+ /* lock the list against modification */
+ down_read(&rxrpc_peers_sem);
+
+ /* allow for the header line */
+ if (!pos)
+ return SEQ_START_TOKEN;
+ pos--;
+
+ /* find the n'th element in the list */
+ list_for_each(_p, &rxrpc_peers)
+ if (!pos--)
+ break;
+
+ return _p != &rxrpc_peers ? _p : NULL;
+} /* end rxrpc_proc_peers_start() */
+
+/*****************************************************************************/
+/*
+ * move to next conn in peers list
+ */
+static void *rxrpc_proc_peers_next(struct seq_file *p, void *v, loff_t *pos)
+{
+ struct list_head *_p;
+
+ (*pos)++;
+
+ _p = v;
+ _p = (v == SEQ_START_TOKEN) ? rxrpc_peers.next : _p->next;
+
+ return _p != &rxrpc_peers ? _p : NULL;
+} /* end rxrpc_proc_peers_next() */
+
+/*****************************************************************************/
+/*
+ * clean up after reading from the peers list
+ */
+static void rxrpc_proc_peers_stop(struct seq_file *p, void *v)
+{
+ up_read(&rxrpc_peers_sem);
+
+} /* end rxrpc_proc_peers_stop() */
+
+/*****************************************************************************/
+/*
+ * display a header line followed by a load of conn lines
+ */
+static int rxrpc_proc_peers_show(struct seq_file *m, void *v)
+{
+ struct rxrpc_peer *peer = list_entry(v, struct rxrpc_peer, proc_link);
+ signed long timeout;
+
+ /* display header on line 1 */
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(m, "LOCAL REMOTE USAGE CONNS TIMEOUT"
+ " MTU RTT(uS)\n");
+ return 0;
+ }
+
+ /* display one peer per line on subsequent lines */
+ timeout = 0;
+ if (!list_empty(&peer->timeout.link))
+ timeout = (signed long) peer->timeout.timo_jif -
+ (signed long) jiffies;
+
+ seq_printf(m, "%5hu %08x %5d %5d %8ld %5Zu %7lu\n",
+ peer->trans->port,
+ ntohl(peer->addr.s_addr),
+ atomic_read(&peer->usage),
+ atomic_read(&peer->conn_count),
+ timeout,
+ peer->if_mtu,
+ (long) peer->rtt
+ );
+
+ return 0;
+} /* end rxrpc_proc_peers_show() */
+
+/*****************************************************************************/
+/*
+ * open "/proc/net/rxrpc/connections" which provides a summary of extant
+ * connections
+ */
+static int rxrpc_proc_conns_open(struct inode *inode, struct file *file)
+{
+ struct seq_file *m;
+ int ret;
+
+ ret = seq_open(file, &rxrpc_proc_conns_ops);
+ if (ret < 0)
+ return ret;
+
+ m = file->private_data;
+ m->private = PDE(inode)->data;
+
+ return 0;
+} /* end rxrpc_proc_conns_open() */
+
+/*****************************************************************************/
+/*
+ * set up the iterator to start reading from the conns list and return the
+ * first item
+ */
+static void *rxrpc_proc_conns_start(struct seq_file *m, loff_t *_pos)
+{
+ struct list_head *_p;
+ loff_t pos = *_pos;
+
+ /* lock the list against modification */
+ down_read(&rxrpc_conns_sem);
+
+ /* allow for the header line */
+ if (!pos)
+ return SEQ_START_TOKEN;
+ pos--;
+
+ /* find the n'th element in the list */
+ list_for_each(_p, &rxrpc_conns)
+ if (!pos--)
+ break;
+
+ return _p != &rxrpc_conns ? _p : NULL;
+} /* end rxrpc_proc_conns_start() */
+
+/*****************************************************************************/
+/*
+ * move to next conn in conns list
+ */
+static void *rxrpc_proc_conns_next(struct seq_file *p, void *v, loff_t *pos)
+{
+ struct list_head *_p;
+
+ (*pos)++;
+
+ _p = v;
+ _p = (v == SEQ_START_TOKEN) ? rxrpc_conns.next : _p->next;
+
+ return _p != &rxrpc_conns ? _p : NULL;
+} /* end rxrpc_proc_conns_next() */
+
+/*****************************************************************************/
+/*
+ * clean up after reading from the conns list
+ */
+static void rxrpc_proc_conns_stop(struct seq_file *p, void *v)
+{
+ up_read(&rxrpc_conns_sem);
+
+} /* end rxrpc_proc_conns_stop() */
+
+/*****************************************************************************/
+/*
+ * display a header line followed by a load of conn lines
+ */
+static int rxrpc_proc_conns_show(struct seq_file *m, void *v)
+{
+ struct rxrpc_connection *conn;
+ signed long timeout;
+
+ conn = list_entry(v, struct rxrpc_connection, proc_link);
+
+ /* display header on line 1 */
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(m,
+ "LOCAL REMOTE RPORT SRVC CONN END SERIALNO "
+ "CALLNO MTU TIMEOUT"
+ "\n");
+ return 0;
+ }
+
+ /* display one conn per line on subsequent lines */
+ timeout = 0;
+ if (!list_empty(&conn->timeout.link))
+ timeout = (signed long) conn->timeout.timo_jif -
+ (signed long) jiffies;
+
+ seq_printf(m,
+ "%5hu %08x %5hu %04hx %08x %-3.3s %08x %08x %5Zu %8ld\n",
+ conn->trans->port,
+ ntohl(conn->addr.sin_addr.s_addr),
+ ntohs(conn->addr.sin_port),
+ ntohs(conn->service_id),
+ ntohl(conn->conn_id),
+ conn->out_clientflag ? "CLT" : "SRV",
+ conn->serial_counter,
+ conn->call_counter,
+ conn->mtu_size,
+ timeout
+ );
+
+ return 0;
+} /* end rxrpc_proc_conns_show() */
+
+/*****************************************************************************/
+/*
+ * open "/proc/net/rxrpc/calls" which provides a summary of extant calls
+ */
+static int rxrpc_proc_calls_open(struct inode *inode, struct file *file)
+{
+ struct seq_file *m;
+ int ret;
+
+ ret = seq_open(file, &rxrpc_proc_calls_ops);
+ if (ret < 0)
+ return ret;
+
+ m = file->private_data;
+ m->private = PDE(inode)->data;
+
+ return 0;
+} /* end rxrpc_proc_calls_open() */
+
+/*****************************************************************************/
+/*
+ * set up the iterator to start reading from the calls list and return the
+ * first item
+ */
+static void *rxrpc_proc_calls_start(struct seq_file *m, loff_t *_pos)
+{
+ struct list_head *_p;
+ loff_t pos = *_pos;
+
+ /* lock the list against modification */
+ down_read(&rxrpc_calls_sem);
+
+ /* allow for the header line */
+ if (!pos)
+ return SEQ_START_TOKEN;
+ pos--;
+
+ /* find the n'th element in the list */
+ list_for_each(_p, &rxrpc_calls)
+ if (!pos--)
+ break;
+
+ return _p != &rxrpc_calls ? _p : NULL;
+} /* end rxrpc_proc_calls_start() */
+
+/*****************************************************************************/
+/*
+ * move to next call in calls list
+ */
+static void *rxrpc_proc_calls_next(struct seq_file *p, void *v, loff_t *pos)
+{
+ struct list_head *_p;
+
+ (*pos)++;
+
+ _p = v;
+ _p = (v == SEQ_START_TOKEN) ? rxrpc_calls.next : _p->next;
+
+ return _p != &rxrpc_calls ? _p : NULL;
+} /* end rxrpc_proc_calls_next() */
+
+/*****************************************************************************/
+/*
+ * clean up after reading from the calls list
+ */
+static void rxrpc_proc_calls_stop(struct seq_file *p, void *v)
+{
+ up_read(&rxrpc_calls_sem);
+
+} /* end rxrpc_proc_calls_stop() */
+
+/*****************************************************************************/
+/*
+ * display a header line followed by a load of call lines
+ */
+static int rxrpc_proc_calls_show(struct seq_file *m, void *v)
+{
+ struct rxrpc_call *call = list_entry(v, struct rxrpc_call, call_link);
+
+ /* display header on line 1 */
+ if (v == SEQ_START_TOKEN) {
+ seq_puts(m,
+ "LOCAL REMOT SRVC CONN CALL DIR USE "
+ " L STATE OPCODE ABORT ERRNO\n"
+ );
+ return 0;
+ }
+
+ /* display one call per line on subsequent lines */
+ seq_printf(m,
+ "%5hu %5hu %04hx %08x %08x %s %3u%c"
+ " %c %-7.7s %6d %08x %5d\n",
+ call->conn->trans->port,
+ ntohs(call->conn->addr.sin_port),
+ ntohs(call->conn->service_id),
+ ntohl(call->conn->conn_id),
+ ntohl(call->call_id),
+ call->conn->service ? "SVC" : "CLT",
+ atomic_read(&call->usage),
+ waitqueue_active(&call->waitq) ? 'w' : ' ',
+ call->app_last_rcv ? 'Y' : '-',
+ (call->app_call_state!=RXRPC_CSTATE_ERROR ?
+ rxrpc_call_states7[call->app_call_state] :
+ rxrpc_call_error_states7[call->app_err_state]),
+ call->app_opcode,
+ call->app_abort_code,
+ call->app_errno
+ );
+
+ return 0;
+} /* end rxrpc_proc_calls_show() */
generated by cgit v1.2.3 (git 2.39.1) at 2024-04-20 11:54:51 +0000