/* /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) { rcu_read_lock(); read_lock(&rxrpc_call_lock); return seq_list_start_head(&rxrpc_calls, *_pos); } static void *rxrpc_call_seq_next(struct seq_file *seq, void *v, loff_t *pos) { return seq_list_next(v, &rxrpc_calls, pos); } static void rxrpc_call_seq_stop(struct seq_file *seq, void *v) { read_unlock(&rxrpc_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; rxrpc_seq_t tx_hard_ack, rx_hard_ack; char lbuff[50], rbuff[50]; if (v == &rxrpc_calls) { seq_puts(seq, "Proto Local " " Remote " " SvID ConnID CallID End Use State Abort " " UserID\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"); 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 %lx %08x %02x %08x %02x\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->user_call_ID, tx_hard_ack, READ_ONCE(call->tx_top) - tx_hard_ack, rx_hard_ack, READ_ONCE(call->rx_top) - rx_hard_ack); return 0; } static 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, }; static int rxrpc_call_seq_open(struct inode *inode, struct file *file) { return seq_open(file, &rxrpc_call_seq_ops); } const struct file_operations rxrpc_call_seq_fops = { .owner = THIS_MODULE, .open = rxrpc_call_seq_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, }; /* * 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) { read_lock(&rxrpc_connection_lock); return seq_list_start_head(&rxrpc_connection_proc_list, *_pos); } static void *rxrpc_connection_seq_next(struct seq_file *seq, void *v, loff_t *pos) { return seq_list_next(v, &rxrpc_connection_proc_list, pos); } static void rxrpc_connection_seq_stop(struct seq_file *seq, void *v) { read_unlock(&rxrpc_connection_lock); } static int rxrpc_connection_seq_show(struct seq_file *seq, void *v) { struct rxrpc_connection *conn; char lbuff[50], rbuff[50]; if (v == &rxrpc_connection_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\n", lbuff, rbuff, conn->params.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); return 0; } static 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, }; static int rxrpc_connection_seq_open(struct inode *inode, struct file *file) { return seq_open(file, &rxrpc_connection_seq_ops); } const struct file_operations rxrpc_connection_seq_fops = { .owner = THIS_MODULE, .open = rxrpc_connection_seq_open, .read = seq_read, .llseek = seq_lseek, .release = seq_release, };