diff options
Diffstat (limited to 'net/rxrpc/proc.c')
| -rw-r--r-- | net/rxrpc/proc.c | 214 |
1 files changed, 214 insertions, 0 deletions
diff --git a/net/rxrpc/proc.c b/net/rxrpc/proc.c new file mode 100644 index 000000000..81a765dd8 --- /dev/null +++ b/net/rxrpc/proc.c @@ -0,0 +1,214 @@ +/* /proc/net/ support for AF_RXRPC + * + * Copyright (C) 2007 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/module.h> +#include <net/sock.h> +#include <net/af_rxrpc.h> +#include "ar-internal.h" + +static const char *const rxrpc_conn_states[RXRPC_CONN__NR_STATES] = { + [RXRPC_CONN_UNUSED] = "Unused ", + [RXRPC_CONN_CLIENT] = "Client ", + [RXRPC_CONN_SERVICE_PREALLOC] = "SvPrealc", + [RXRPC_CONN_SERVICE_UNSECURED] = "SvUnsec ", + [RXRPC_CONN_SERVICE_CHALLENGING] = "SvChall ", + [RXRPC_CONN_SERVICE] = "SvSecure", + [RXRPC_CONN_REMOTELY_ABORTED] = "RmtAbort", + [RXRPC_CONN_LOCALLY_ABORTED] = "LocAbort", +}; + +/* + * generate a list of extant and dead calls in /proc/net/rxrpc_calls + */ +static void *rxrpc_call_seq_start(struct seq_file *seq, loff_t *_pos) + __acquires(rcu) + __acquires(rxnet->call_lock) +{ + struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); + + rcu_read_lock(); + read_lock(&rxnet->call_lock); + return seq_list_start_head(&rxnet->calls, *_pos); +} + +static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos) +{ + struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); + + return seq_list_next(v, &rxnet->calls, pos); +} + +static void rxrpc_call_seq_stop(struct seq_file *seq, void *v) + __releases(rxnet->call_lock) + __releases(rcu) +{ + struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); + + read_unlock(&rxnet->call_lock); + rcu_read_unlock(); +} + +static int rxrpc_call_seq_show(struct seq_file *seq, void *v) +{ + struct rxrpc_local *local; + struct rxrpc_sock *rx; + struct rxrpc_peer *peer; + struct rxrpc_call *call; + struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); + unsigned long timeout = 0; + rxrpc_seq_t tx_hard_ack, rx_hard_ack; + char lbuff[50], rbuff[50]; + + if (v == &rxnet->calls) { + seq_puts(seq, + "Proto Local " + " Remote " + " SvID ConnID CallID End Use State Abort " + " DebugId TxSeq TW RxSeq RW RxSerial RxTimo\n"); + return 0; + } + + call = list_entry(v, struct rxrpc_call, link); + + rx = rcu_dereference(call->socket); + if (rx) { + local = READ_ONCE(rx->local); + if (local) + sprintf(lbuff, "%pISpc", &local->srx.transport); + else + strcpy(lbuff, "no_local"); + } else { + strcpy(lbuff, "no_socket"); + } + + peer = call->peer; + if (peer) + sprintf(rbuff, "%pISpc", &peer->srx.transport); + else + strcpy(rbuff, "no_connection"); + + if (call->state != RXRPC_CALL_SERVER_PREALLOC) { + timeout = READ_ONCE(call->expect_rx_by); + timeout -= jiffies; + } + + tx_hard_ack = READ_ONCE(call->tx_hard_ack); + rx_hard_ack = READ_ONCE(call->rx_hard_ack); + seq_printf(seq, + "UDP %-47.47s %-47.47s %4x %08x %08x %s %3u" + " %-8.8s %08x %08x %08x %02x %08x %02x %08x %06lx\n", + lbuff, + rbuff, + call->service_id, + call->cid, + call->call_id, + rxrpc_is_service_call(call) ? "Svc" : "Clt", + atomic_read(&call->usage), + rxrpc_call_states[call->state], + call->abort_code, + call->debug_id, + tx_hard_ack, READ_ONCE(call->tx_top) - tx_hard_ack, + rx_hard_ack, READ_ONCE(call->rx_top) - rx_hard_ack, + call->rx_serial, + timeout); + + return 0; +} + +const struct seq_operations rxrpc_call_seq_ops = { + .start = rxrpc_call_seq_start, + .next = rxrpc_call_seq_next, + .stop = rxrpc_call_seq_stop, + .show = rxrpc_call_seq_show, +}; + +/* + * generate a list of extant virtual connections in /proc/net/rxrpc_conns + */ +static void *rxrpc_connection_seq_start(struct seq_file *seq, loff_t *_pos) + __acquires(rxnet->conn_lock) +{ + struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); + + read_lock(&rxnet->conn_lock); + return seq_list_start_head(&rxnet->conn_proc_list, *_pos); +} + +static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v, + loff_t *pos) +{ + struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); + + return seq_list_next(v, &rxnet->conn_proc_list, pos); +} + +static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v) + __releases(rxnet->conn_lock) +{ + struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); + + read_unlock(&rxnet->conn_lock); +} + +static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) +{ + struct rxrpc_connection *conn; + struct rxrpc_net *rxnet = rxrpc_net(seq_file_net(seq)); + char lbuff[50], rbuff[50]; + + if (v == &rxnet->conn_proc_list) { + seq_puts(seq, + "Proto Local " + " Remote " + " SvID ConnID End Use State Key " + " Serial ISerial\n" + ); + return 0; + } + + conn = list_entry(v, struct rxrpc_connection, proc_link); + if (conn->state == RXRPC_CONN_SERVICE_PREALLOC) { + strcpy(lbuff, "no_local"); + strcpy(rbuff, "no_connection"); + goto print; + } + + sprintf(lbuff, "%pISpc", &conn->params.local->srx.transport); + + sprintf(rbuff, "%pISpc", &conn->params.peer->srx.transport); +print: + seq_printf(seq, + "UDP %-47.47s %-47.47s %4x %08x %s %3u" + " %s %08x %08x %08x %08x %08x %08x %08x\n", + lbuff, + rbuff, + conn->service_id, + conn->proto.cid, + rxrpc_conn_is_service(conn) ? "Svc" : "Clt", + atomic_read(&conn->usage), + rxrpc_conn_states[conn->state], + key_serial(conn->params.key), + atomic_read(&conn->serial), + conn->hi_serial, + conn->channels[0].call_id, + conn->channels[1].call_id, + conn->channels[2].call_id, + conn->channels[3].call_id); + + return 0; +} + +const struct seq_operations rxrpc_connection_seq_ops = { + .start = rxrpc_connection_seq_start, + .next = rxrpc_connection_seq_next, + .stop = rxrpc_connection_seq_stop, + .show = rxrpc_connection_seq_show, +}; |