![David Howells](/assets/img/avatar_default.png)
Show a call's hard-ACK cursors in /proc/net/rxrpc_calls so that a call's progress can be more easily monitored. Signed-off-by: David Howells <dhowells@redhat.com>
210 lines
5.4 KiB
C
210 lines
5.4 KiB
C
/* /proc/net/ support for AF_RXRPC
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*
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* Copyright (C) 2007 Red Hat, Inc. All Rights Reserved.
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* Written by David Howells (dhowells@redhat.com)
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*
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* This program is free software; you can redistribute it and/or
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* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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*/
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#include <linux/module.h>
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#include <net/sock.h>
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#include <net/af_rxrpc.h>
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#include "ar-internal.h"
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static const char *const rxrpc_conn_states[RXRPC_CONN__NR_STATES] = {
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[RXRPC_CONN_UNUSED] = "Unused ",
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[RXRPC_CONN_CLIENT] = "Client ",
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[RXRPC_CONN_SERVICE_PREALLOC] = "SvPrealc",
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[RXRPC_CONN_SERVICE_UNSECURED] = "SvUnsec ",
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[RXRPC_CONN_SERVICE_CHALLENGING] = "SvChall ",
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[RXRPC_CONN_SERVICE] = "SvSecure",
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[RXRPC_CONN_REMOTELY_ABORTED] = "RmtAbort",
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[RXRPC_CONN_LOCALLY_ABORTED] = "LocAbort",
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};
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/*
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* generate a list of extant and dead calls in /proc/net/rxrpc_calls
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*/
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static void *rxrpc_call_seq_start(struct seq_file *seq, loff_t *_pos)
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{
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rcu_read_lock();
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read_lock(&rxrpc_call_lock);
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return seq_list_start_head(&rxrpc_calls, *_pos);
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}
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static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos)
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{
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return seq_list_next(v, &rxrpc_calls, pos);
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}
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static void rxrpc_call_seq_stop(struct seq_file *seq, void *v)
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{
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read_unlock(&rxrpc_call_lock);
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rcu_read_unlock();
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}
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static int rxrpc_call_seq_show(struct seq_file *seq, void *v)
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{
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struct rxrpc_local *local;
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struct rxrpc_sock *rx;
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struct rxrpc_peer *peer;
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struct rxrpc_call *call;
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rxrpc_seq_t tx_hard_ack, rx_hard_ack;
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char lbuff[50], rbuff[50];
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if (v == &rxrpc_calls) {
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seq_puts(seq,
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"Proto Local "
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" Remote "
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" SvID ConnID CallID End Use State Abort "
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" UserID\n");
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return 0;
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}
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call = list_entry(v, struct rxrpc_call, link);
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rx = rcu_dereference(call->socket);
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if (rx) {
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local = READ_ONCE(rx->local);
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if (local)
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sprintf(lbuff, "%pISpc", &local->srx.transport);
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else
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strcpy(lbuff, "no_local");
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} else {
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strcpy(lbuff, "no_socket");
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}
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peer = call->peer;
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if (peer)
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sprintf(rbuff, "%pISpc", &peer->srx.transport);
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else
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strcpy(rbuff, "no_connection");
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tx_hard_ack = READ_ONCE(call->tx_hard_ack);
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rx_hard_ack = READ_ONCE(call->rx_hard_ack);
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seq_printf(seq,
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"UDP %-47.47s %-47.47s %4x %08x %08x %s %3u"
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" %-8.8s %08x %lx %08x %02x %08x %02x\n",
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lbuff,
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rbuff,
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call->service_id,
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call->cid,
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call->call_id,
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rxrpc_is_service_call(call) ? "Svc" : "Clt",
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atomic_read(&call->usage),
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rxrpc_call_states[call->state],
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call->abort_code,
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call->user_call_ID,
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tx_hard_ack, READ_ONCE(call->tx_top) - tx_hard_ack,
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rx_hard_ack, READ_ONCE(call->rx_top) - rx_hard_ack);
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return 0;
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}
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static const struct seq_operations rxrpc_call_seq_ops = {
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.start = rxrpc_call_seq_start,
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.next = rxrpc_call_seq_next,
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.stop = rxrpc_call_seq_stop,
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.show = rxrpc_call_seq_show,
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};
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static int rxrpc_call_seq_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &rxrpc_call_seq_ops);
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}
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const struct file_operations rxrpc_call_seq_fops = {
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.owner = THIS_MODULE,
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.open = rxrpc_call_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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/*
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* generate a list of extant virtual connections in /proc/net/rxrpc_conns
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*/
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static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos)
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{
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read_lock(&rxrpc_connection_lock);
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return seq_list_start_head(&rxrpc_connection_proc_list, *_pos);
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}
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static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v,
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loff_t *pos)
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{
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return seq_list_next(v, &rxrpc_connection_proc_list, pos);
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}
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static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v)
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{
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read_unlock(&rxrpc_connection_lock);
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}
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static int rxrpc_connection_seq_show(struct seq_file *seq, void *v)
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{
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struct rxrpc_connection *conn;
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char lbuff[50], rbuff[50];
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if (v == &rxrpc_connection_proc_list) {
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seq_puts(seq,
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"Proto Local "
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" Remote "
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" SvID ConnID End Use State Key "
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" Serial ISerial\n"
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);
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return 0;
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}
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conn = list_entry(v, struct rxrpc_connection, proc_link);
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if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) {
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strcpy(lbuff, "no_local");
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strcpy(rbuff, "no_connection");
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goto print;
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}
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sprintf(lbuff, "%pISpc", &conn->params.local->srx.transport);
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sprintf(rbuff, "%pISpc", &conn->params.peer->srx.transport);
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print:
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seq_printf(seq,
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"UDP %-47.47s %-47.47s %4x %08x %s %3u"
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" %s %08x %08x %08x\n",
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lbuff,
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rbuff,
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conn->params.service_id,
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conn->proto.cid,
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rxrpc_conn_is_service(conn) ? "Svc" : "Clt",
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atomic_read(&conn->usage),
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rxrpc_conn_states[conn->state],
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key_serial(conn->params.key),
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atomic_read(&conn->serial),
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conn->hi_serial);
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return 0;
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}
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static const struct seq_operations rxrpc_connection_seq_ops = {
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.start = rxrpc_connection_seq_start,
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.next = rxrpc_connection_seq_next,
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.stop = rxrpc_connection_seq_stop,
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.show = rxrpc_connection_seq_show,
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};
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static int rxrpc_connection_seq_open(struct inode *inode, struct file *file)
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{
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return seq_open(file, &rxrpc_connection_seq_ops);
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}
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const struct file_operations rxrpc_connection_seq_fops = {
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.owner = THIS_MODULE,
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.open = rxrpc_connection_seq_open,
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.read = seq_read,
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.llseek = seq_lseek,
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.release = seq_release,
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};
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