aboutsummaryrefslogtreecommitdiff
path: root/net/tipc/core.c
diff options
context:
space:
mode:
Diffstat (limited to 'net/tipc/core.c')
-rw-r--r--net/tipc/core.c270
1 files changed, 88 insertions, 182 deletions
diff --git a/net/tipc/core.c b/net/tipc/core.c
index 3256bd7d398..676d18015dd 100644
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -1,8 +1,8 @@
/*
* net/tipc/core.c: TIPC module code
*
- * Copyright (c) 2003-2006, Ericsson AB
- * Copyright (c) 2005-2006, Wind River Systems
+ * Copyright (c) 2003-2006, 2013, Ericsson AB
+ * Copyright (c) 2005-2006, 2010-2013, Wind River Systems
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
@@ -34,181 +34,144 @@
* POSSIBILITY OF SUCH DAMAGE.
*/
-#include <linux/init.h>
-#include <linux/module.h>
-#include <linux/kernel.h>
-#include <linux/random.h>
-
#include "core.h"
-#include "dbg.h"
#include "ref.h"
-#include "net.h"
-#include "user_reg.h"
#include "name_table.h"
#include "subscr.h"
#include "config.h"
+#include "port.h"
-
-#define TIPC_MOD_VER "1.6.4"
-
-#ifndef CONFIG_TIPC_ZONES
-#define CONFIG_TIPC_ZONES 3
-#endif
-
-#ifndef CONFIG_TIPC_CLUSTERS
-#define CONFIG_TIPC_CLUSTERS 1
-#endif
-
-#ifndef CONFIG_TIPC_NODES
-#define CONFIG_TIPC_NODES 255
-#endif
-
-#ifndef CONFIG_TIPC_SLAVE_NODES
-#define CONFIG_TIPC_SLAVE_NODES 0
-#endif
-
-#ifndef CONFIG_TIPC_PORTS
-#define CONFIG_TIPC_PORTS 8191
-#endif
-
-#ifndef CONFIG_TIPC_LOG
-#define CONFIG_TIPC_LOG 0
-#endif
+#include <linux/module.h>
/* global variables used by multiple sub-systems within TIPC */
-
-int tipc_mode = TIPC_NOT_RUNNING;
-int tipc_random;
-atomic_t tipc_user_count = ATOMIC_INIT(0);
-
-const char tipc_alphabet[] =
- "ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789_.";
+int tipc_random __read_mostly;
/* configurable TIPC parameters */
-
-u32 tipc_own_addr;
-int tipc_max_zones;
-int tipc_max_clusters;
-int tipc_max_nodes;
-int tipc_max_slaves;
-int tipc_max_ports;
-int tipc_max_subscriptions;
-int tipc_max_publications;
-int tipc_net_id;
-int tipc_remote_management;
-
-
-int tipc_get_mode(void)
-{
- return tipc_mode;
-}
+u32 tipc_own_addr __read_mostly;
+int tipc_max_ports __read_mostly;
+int tipc_net_id __read_mostly;
+int sysctl_tipc_rmem[3] __read_mostly; /* min/default/max */
/**
- * tipc_core_stop_net - shut down TIPC networking sub-systems
- */
-
-void tipc_core_stop_net(void)
-{
- tipc_eth_media_stop();
- tipc_net_stop();
-}
-
-/**
- * start_net - start TIPC networking sub-systems
+ * tipc_buf_acquire - creates a TIPC message buffer
+ * @size: message size (including TIPC header)
+ *
+ * Returns a new buffer with data pointers set to the specified size.
+ *
+ * NOTE: Headroom is reserved to allow prepending of a data link header.
+ * There may also be unrequested tailroom present at the buffer's end.
*/
-
-int tipc_core_start_net(unsigned long addr)
+struct sk_buff *tipc_buf_acquire(u32 size)
{
- int res;
-
- if ((res = tipc_net_start(addr)) ||
- (res = tipc_eth_media_start())) {
- tipc_core_stop_net();
+ struct sk_buff *skb;
+ unsigned int buf_size = (BUF_HEADROOM + size + 3) & ~3u;
+
+ skb = alloc_skb_fclone(buf_size, GFP_ATOMIC);
+ if (skb) {
+ skb_reserve(skb, BUF_HEADROOM);
+ skb_put(skb, size);
+ skb->next = NULL;
}
- return res;
+ return skb;
}
/**
* tipc_core_stop - switch TIPC from SINGLE NODE to NOT RUNNING mode
*/
-
-void tipc_core_stop(void)
+static void tipc_core_stop(void)
{
- if (tipc_mode != TIPC_NODE_MODE)
- return;
-
- tipc_mode = TIPC_NOT_RUNNING;
-
+ tipc_net_stop();
+ tipc_bearer_cleanup();
tipc_netlink_stop();
- tipc_handler_stop();
- tipc_cfg_stop();
tipc_subscr_stop();
- tipc_reg_stop();
tipc_nametbl_stop();
tipc_ref_table_stop();
tipc_socket_stop();
+ tipc_unregister_sysctl();
}
/**
* tipc_core_start - switch TIPC from NOT RUNNING to SINGLE NODE mode
*/
-
-int tipc_core_start(void)
+static int tipc_core_start(void)
{
- int res;
-
- if (tipc_mode != TIPC_NOT_RUNNING)
- return -ENOPROTOOPT;
+ int err;
get_random_bytes(&tipc_random, sizeof(tipc_random));
- tipc_mode = TIPC_NODE_MODE;
- if ((res = tipc_handler_start()) ||
- (res = tipc_ref_table_init(tipc_max_ports, tipc_random)) ||
- (res = tipc_reg_start()) ||
- (res = tipc_nametbl_init()) ||
- (res = tipc_k_signal((Handler)tipc_subscr_start, 0)) ||
- (res = tipc_k_signal((Handler)tipc_cfg_init, 0)) ||
- (res = tipc_netlink_start()) ||
- (res = tipc_socket_init())) {
- tipc_core_stop();
- }
- return res;
-}
+ err = tipc_ref_table_init(tipc_max_ports, tipc_random);
+ if (err)
+ goto out_reftbl;
+
+ err = tipc_nametbl_init();
+ if (err)
+ goto out_nametbl;
+
+ err = tipc_netlink_start();
+ if (err)
+ goto out_netlink;
+
+ err = tipc_socket_init();
+ if (err)
+ goto out_socket;
+
+ err = tipc_register_sysctl();
+ if (err)
+ goto out_sysctl;
+
+ err = tipc_subscr_start();
+ if (err)
+ goto out_subscr;
+ err = tipc_bearer_setup();
+ if (err)
+ goto out_bearer;
+
+ return 0;
+out_bearer:
+ tipc_subscr_stop();
+out_subscr:
+ tipc_unregister_sysctl();
+out_sysctl:
+ tipc_socket_stop();
+out_socket:
+ tipc_netlink_stop();
+out_netlink:
+ tipc_nametbl_stop();
+out_nametbl:
+ tipc_ref_table_stop();
+out_reftbl:
+ return err;
+}
static int __init tipc_init(void)
{
int res;
- tipc_log_resize(CONFIG_TIPC_LOG);
- info("Activated (version " TIPC_MOD_VER
- " compiled " __DATE__ " " __TIME__ ")\n");
+ pr_info("Activated (version " TIPC_MOD_VER ")\n");
tipc_own_addr = 0;
- tipc_remote_management = 1;
- tipc_max_publications = 10000;
- tipc_max_subscriptions = 2000;
- tipc_max_ports = delimit(CONFIG_TIPC_PORTS, 127, 65536);
- tipc_max_zones = delimit(CONFIG_TIPC_ZONES, 1, 255);
- tipc_max_clusters = delimit(CONFIG_TIPC_CLUSTERS, 1, 1);
- tipc_max_nodes = delimit(CONFIG_TIPC_NODES, 8, 2047);
- tipc_max_slaves = delimit(CONFIG_TIPC_SLAVE_NODES, 0, 2047);
+ tipc_max_ports = CONFIG_TIPC_PORTS;
tipc_net_id = 4711;
- if ((res = tipc_core_start()))
- err("Unable to start in single node mode\n");
+ sysctl_tipc_rmem[0] = TIPC_CONN_OVERLOAD_LIMIT >> 4 <<
+ TIPC_LOW_IMPORTANCE;
+ sysctl_tipc_rmem[1] = TIPC_CONN_OVERLOAD_LIMIT >> 4 <<
+ TIPC_CRITICAL_IMPORTANCE;
+ sysctl_tipc_rmem[2] = TIPC_CONN_OVERLOAD_LIMIT;
+
+ res = tipc_core_start();
+ if (res)
+ pr_err("Unable to start in single node mode\n");
else
- info("Started in single node mode\n");
+ pr_info("Started in single node mode\n");
return res;
}
static void __exit tipc_exit(void)
{
- tipc_core_stop_net();
tipc_core_stop();
- info("Deactivated\n");
- tipc_log_resize(0);
+ pr_info("Deactivated\n");
}
module_init(tipc_init);
@@ -217,60 +180,3 @@ module_exit(tipc_exit);
MODULE_DESCRIPTION("TIPC: Transparent Inter Process Communication");
MODULE_LICENSE("Dual BSD/GPL");
MODULE_VERSION(TIPC_MOD_VER);
-
-/* Native TIPC API for kernel-space applications (see tipc.h) */
-
-EXPORT_SYMBOL(tipc_attach);
-EXPORT_SYMBOL(tipc_detach);
-EXPORT_SYMBOL(tipc_get_addr);
-EXPORT_SYMBOL(tipc_get_mode);
-EXPORT_SYMBOL(tipc_createport);
-EXPORT_SYMBOL(tipc_deleteport);
-EXPORT_SYMBOL(tipc_ownidentity);
-EXPORT_SYMBOL(tipc_portimportance);
-EXPORT_SYMBOL(tipc_set_portimportance);
-EXPORT_SYMBOL(tipc_portunreliable);
-EXPORT_SYMBOL(tipc_set_portunreliable);
-EXPORT_SYMBOL(tipc_portunreturnable);
-EXPORT_SYMBOL(tipc_set_portunreturnable);
-EXPORT_SYMBOL(tipc_publish);
-EXPORT_SYMBOL(tipc_withdraw);
-EXPORT_SYMBOL(tipc_connect2port);
-EXPORT_SYMBOL(tipc_disconnect);
-EXPORT_SYMBOL(tipc_shutdown);
-EXPORT_SYMBOL(tipc_isconnected);
-EXPORT_SYMBOL(tipc_peer);
-EXPORT_SYMBOL(tipc_ref_valid);
-EXPORT_SYMBOL(tipc_send);
-EXPORT_SYMBOL(tipc_send_buf);
-EXPORT_SYMBOL(tipc_send2name);
-EXPORT_SYMBOL(tipc_forward2name);
-EXPORT_SYMBOL(tipc_send_buf2name);
-EXPORT_SYMBOL(tipc_forward_buf2name);
-EXPORT_SYMBOL(tipc_send2port);
-EXPORT_SYMBOL(tipc_forward2port);
-EXPORT_SYMBOL(tipc_send_buf2port);
-EXPORT_SYMBOL(tipc_forward_buf2port);
-EXPORT_SYMBOL(tipc_multicast);
-/* EXPORT_SYMBOL(tipc_multicast_buf); not available yet */
-EXPORT_SYMBOL(tipc_ispublished);
-EXPORT_SYMBOL(tipc_available_nodes);
-
-/* TIPC API for external bearers (see tipc_bearer.h) */
-
-EXPORT_SYMBOL(tipc_block_bearer);
-EXPORT_SYMBOL(tipc_continue);
-EXPORT_SYMBOL(tipc_disable_bearer);
-EXPORT_SYMBOL(tipc_enable_bearer);
-EXPORT_SYMBOL(tipc_recv_msg);
-EXPORT_SYMBOL(tipc_register_media);
-
-/* TIPC API for external APIs (see tipc_port.h) */
-
-EXPORT_SYMBOL(tipc_createport_raw);
-EXPORT_SYMBOL(tipc_reject_msg);
-EXPORT_SYMBOL(tipc_send_buf_fast);
-EXPORT_SYMBOL(tipc_acknowledge);
-EXPORT_SYMBOL(tipc_get_port);
-EXPORT_SYMBOL(tipc_get_handle);
-
generated by cgit v1.2.3-70-g09d2 (git 2.46.0) at 2025-11-09 06:57:35 +0000