Commit f831c963 authored by Allan Stephens's avatar Allan Stephens Committed by Paul Gortmaker
Browse files

tipc: Eliminate configuration for maximum number of cluster nodes 



Gets rid of the need for users to specify the maximum number of
cluster nodes supported by TIPC. TIPC now automatically provides
support for all 4K nodes allowed by its addressing scheme.

Note: This change sets TIPC's memory usage to the amount used by
a maximum size node table with 4K entries.  An upcoming patch that
converts the node table from a linear array to a hash table will
compact the node table to a more efficient design, but for clarity
it is nice to have all the Kconfig infrastruture go away separately.

Signed-off-by: default avatarAllan Stephens <Allan.Stephens@windriver.com>
Signed-off-by: default avatarPaul Gortmaker <paul.gortmaker@windriver.com>
parent d1bcb115

include/linux/tipc_config.h

+2 −2
Original line number Diff line number Diff line
@@ -89,7 +89,7 @@ 
#define  TIPC_CMD_GET_MAX_SUBSCR    0x4006    /* tx none, rx unsigned */

#define  TIPC_CMD_GET_MAX_ZONES     0x4007    /* obsoleted */

#define  TIPC_CMD_GET_MAX_CLUSTERS  0x4008    /* obsoleted */

#define  TIPC_CMD_GET_MAX_NODES     0x4009    /* tx none, rx unsigned */

#define  TIPC_CMD_GET_MAX_NODES     0x4009    /* obsoleted */

#define  TIPC_CMD_GET_MAX_SLAVES    0x400A    /* obsoleted */

#define  TIPC_CMD_GET_NETID         0x400B    /* tx none, rx unsigned */
@@ -115,7 +115,7 @@ 
#define  TIPC_CMD_SET_MAX_SUBSCR    0x8006    /* tx unsigned, rx none */

#define  TIPC_CMD_SET_MAX_ZONES     0x8007    /* obsoleted */

#define  TIPC_CMD_SET_MAX_CLUSTERS  0x8008    /* obsoleted */

#define  TIPC_CMD_SET_MAX_NODES     0x8009    /* tx unsigned, rx none */

#define  TIPC_CMD_SET_MAX_NODES     0x8009    /* obsoleted */

#define  TIPC_CMD_SET_MAX_SLAVES    0x800A    /* obsoleted */

#define  TIPC_CMD_SET_NETID         0x800B    /* tx unsigned, rx none */

net/tipc/Kconfig

+0 −12
Original line number Diff line number Diff line
@@ -29,18 +29,6 @@ config TIPC_ADVANCED 
	  Saying Y here will open some advanced configuration for TIPC.

	  Most users do not need to bother; if unsure, just say N.



config TIPC_NODES

	int "Maximum number of nodes in a cluster"

	depends on TIPC_ADVANCED

	range 8 2047

	default "255"

	help

	  Specifies how many nodes can be supported in a TIPC cluster.

	  Can range from 8 to 2047 nodes; default is 255.



	  Setting this to a smaller value saves some memory;

	  setting it to higher allows for more nodes.



config TIPC_PORTS

	int "Maximum number of ports in a node"

	depends on TIPC_ADVANCED

net/tipc/addr.c

+3 −8
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ 
 * net/tipc/addr.c: TIPC address utility routines

 *

 * Copyright (c) 2000-2006, Ericsson AB

 * Copyright (c) 2004-2005, Wind River Systems

 * Copyright (c) 2004-2005, 2010-2011, Wind River Systems

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without
@@ -41,7 +41,7 @@ 
 * tipc_addr_domain_valid - validates a network domain address

 *

 * Accepts <Z.C.N>, <Z.C.0>, <Z.0.0>, and <0.0.0>,

 * where Z, C, and N are non-zero and do not exceed the configured limits.

 * where Z, C, and N are non-zero.

 *

 * Returns 1 if domain address is valid, otherwise 0

 */
@@ -51,10 +51,6 @@ int tipc_addr_domain_valid(u32 addr) 
	u32 n = tipc_node(addr);

	u32 c = tipc_cluster(addr);

	u32 z = tipc_zone(addr);

	u32 max_nodes = tipc_max_nodes;



	if (n > max_nodes)

		return 0;



	if (n && (!z || !c))

		return 0;
@@ -66,8 +62,7 @@ int tipc_addr_domain_valid(u32 addr) 
/**

 * tipc_addr_node_valid - validates a proposed network address for this node

 *

 * Accepts <Z.C.N>, where Z, C, and N are non-zero and do not exceed

 * the configured limits.

 * Accepts <Z.C.N>, where Z, C, and N are non-zero.

 *

 * Returns 1 if address can be used, otherwise 0

 */

net/tipc/config.c

+3 −26
Original line number Diff line number Diff line
@@ -2,7 +2,7 @@ 
 * net/tipc/config.c: TIPC configuration management code

 *

 * Copyright (c) 2002-2006, Ericsson AB

 * Copyright (c) 2004-2007, Wind River Systems

 * Copyright (c) 2004-2007, 2010-2011, Wind River Systems

 * All rights reserved.

 *

 * Redistribution and use in source and binary forms, with or without
@@ -260,25 +260,6 @@ static struct sk_buff *cfg_set_max_ports(void) 
	return tipc_cfg_reply_none();

}



static struct sk_buff *cfg_set_max_nodes(void)

{

	u32 value;



	if (!TLV_CHECK(req_tlv_area, req_tlv_space, TIPC_TLV_UNSIGNED))

		return tipc_cfg_reply_error_string(TIPC_CFG_TLV_ERROR);

	value = ntohl(*(__be32 *)TLV_DATA(req_tlv_area));

	if (value == tipc_max_nodes)

		return tipc_cfg_reply_none();

	if (value != delimit(value, 8, 2047))

		return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE

						   " (max nodes must be 8-2047)");

	if (tipc_mode == TIPC_NET_MODE)

		return tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED

			" (cannot change max nodes once TIPC has joined a network)");

	tipc_max_nodes = value;

	return tipc_cfg_reply_none();

}



static struct sk_buff *cfg_set_netid(void)

{

	u32 value;
@@ -397,9 +378,6 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area 
	case TIPC_CMD_SET_MAX_SUBSCR:

		rep_tlv_buf = cfg_set_max_subscriptions();

		break;

	case TIPC_CMD_SET_MAX_NODES:

		rep_tlv_buf = cfg_set_max_nodes();

		break;

	case TIPC_CMD_SET_NETID:

		rep_tlv_buf = cfg_set_netid();

		break;
@@ -415,9 +393,6 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area 
	case TIPC_CMD_GET_MAX_SUBSCR:

		rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_subscriptions);

		break;

	case TIPC_CMD_GET_MAX_NODES:

		rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_nodes);

		break;

	case TIPC_CMD_GET_NETID:

		rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_net_id);

		break;
@@ -431,6 +406,8 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area 
	case TIPC_CMD_GET_MAX_SLAVES:

	case TIPC_CMD_SET_MAX_CLUSTERS:

	case TIPC_CMD_GET_MAX_CLUSTERS:

	case TIPC_CMD_SET_MAX_NODES:

	case TIPC_CMD_GET_MAX_NODES:

		rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED

							  " (obsolete command)");

		break;

net/tipc/core.c

+0 −6
Original line number Diff line number Diff line
@@ -41,10 +41,6 @@ 
#include "config.h"





#ifndef CONFIG_TIPC_NODES

#define CONFIG_TIPC_NODES 255

#endif



#ifndef CONFIG_TIPC_PORTS

#define CONFIG_TIPC_PORTS 8191

#endif
@@ -64,7 +60,6 @@ const char tipc_alphabet[] = 
/* configurable TIPC parameters */



u32 tipc_own_addr;

int tipc_max_nodes;

int tipc_max_ports;

int tipc_max_subscriptions;

int tipc_max_publications;
@@ -192,7 +187,6 @@ static int __init tipc_init(void) 
	tipc_max_publications = 10000;

	tipc_max_subscriptions = 2000;

	tipc_max_ports = CONFIG_TIPC_PORTS;

	tipc_max_nodes = CONFIG_TIPC_NODES;

	tipc_net_id = 4711;



	res = tipc_core_start();

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