| /* /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, |
| }; |