tipc: eliminate configuration for maximum number of name subscriptions

Gets rid of the need for users to specify the maximum number of
name subscriptions supported by TIPC. TIPC now automatically provides
support for the maximum number of name subscriptions to 65535.

Signed-off-by: Ying Xue <ying.xue@windriver.com>
Signed-off-by: Jon Maloy <jon.maloy@ericsson.com>
Signed-off-by: Paul Gortmaker <paul.gortmaker@windriver.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

diff --git a/include/linux/tipc_config.h b/include/linux/tipc_config.h
index c98928420100962e005aabc73ecfd9b73d395fea..8dd8305c26c5d6897591a5b40e3ecf974a34c0d4 100644 (file)
--- a/include/linux/tipc_config.h
+++ b/include/linux/tipc_config.h
@@ -90,7 +90,7 @@
 #define  TIPC_CMD_GET_REMOTE_MNG    0x4003    /* tx none, rx unsigned */
 #define  TIPC_CMD_GET_MAX_PORTS     0x4004    /* tx none, rx unsigned */
 #define  TIPC_CMD_GET_MAX_PUBL      0x4005    /* tx none, rx unsigned */
-#define  TIPC_CMD_GET_MAX_SUBSCR    0x4006    /* tx none, rx unsigned */
+#define  TIPC_CMD_GET_MAX_SUBSCR    0x4006    /* obsoleted */
 #define  TIPC_CMD_GET_MAX_ZONES     0x4007    /* obsoleted */
 #define  TIPC_CMD_GET_MAX_CLUSTERS  0x4008    /* obsoleted */
 #define  TIPC_CMD_GET_MAX_NODES     0x4009    /* obsoleted */
@@ -116,7 +116,7 @@
 #define  TIPC_CMD_SET_REMOTE_MNG    0x8003    /* tx unsigned, rx none */
 #define  TIPC_CMD_SET_MAX_PORTS     0x8004    /* tx unsigned, rx none */
 #define  TIPC_CMD_SET_MAX_PUBL      0x8005    /* tx unsigned, rx none */
-#define  TIPC_CMD_SET_MAX_SUBSCR    0x8006    /* tx unsigned, rx none */
+#define  TIPC_CMD_SET_MAX_SUBSCR    0x8006    /* obsoleted */
 #define  TIPC_CMD_SET_MAX_ZONES     0x8007    /* obsoleted */
 #define  TIPC_CMD_SET_MAX_CLUSTERS  0x8008    /* obsoleted */
 #define  TIPC_CMD_SET_MAX_NODES     0x8009    /* obsoleted */

diff --git a/net/tipc/config.c b/net/tipc/config.c
index a056a3852f71f0a63109c7fe5188f8117e7144c7..7a1275863c8aca675f58e266927a9e08f05e3971 100644 (file)
--- a/net/tipc/config.c
+++ b/net/tipc/config.c
@@ -2,7 +2,7 @@
  * net/tipc/config.c: TIPC configuration management code
  *
  * Copyright (c) 2002-2006, Ericsson AB
- * Copyright (c) 2004-2007, 2010-2011, Wind River Systems
+ * Copyright (c) 2004-2007, 2010-2012, Wind River Systems
  * All rights reserved.
  *
  * Redistribution and use in source and binary forms, with or without
@@ -223,21 +223,6 @@ static struct sk_buff *cfg_set_max_publications(void)
        return tipc_cfg_reply_none();
 }
 
-static struct sk_buff *cfg_set_max_subscriptions(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 < 1 || value > 65535)
-               return tipc_cfg_reply_error_string(TIPC_CFG_INVALID_VALUE
-                                                  " (max subscriptions must be 1-65535");
-       tipc_max_subscriptions = value;
-       return tipc_cfg_reply_none();
-}
-
 static struct sk_buff *cfg_set_max_ports(void)
 {
        u32 value;
@@ -360,9 +345,6 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area
        case TIPC_CMD_SET_MAX_PUBL:
                rep_tlv_buf = cfg_set_max_publications();
                break;
-       case TIPC_CMD_SET_MAX_SUBSCR:
-               rep_tlv_buf = cfg_set_max_subscriptions();
-               break;
        case TIPC_CMD_SET_NETID:
                rep_tlv_buf = cfg_set_netid();
                break;
@@ -375,9 +357,6 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area
        case TIPC_CMD_GET_MAX_PUBL:
                rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_publications);
                break;
-       case TIPC_CMD_GET_MAX_SUBSCR:
-               rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_max_subscriptions);
-               break;
        case TIPC_CMD_GET_NETID:
                rep_tlv_buf = tipc_cfg_reply_unsigned(tipc_net_id);
                break;
@@ -393,6 +372,8 @@ struct sk_buff *tipc_cfg_do_cmd(u32 orig_node, u16 cmd, const void *request_area
        case TIPC_CMD_GET_MAX_CLUSTERS:
        case TIPC_CMD_SET_MAX_NODES:
        case TIPC_CMD_GET_MAX_NODES:
+       case TIPC_CMD_SET_MAX_SUBSCR:
+       case TIPC_CMD_GET_MAX_SUBSCR:
        case TIPC_CMD_SET_LOG_SIZE:
        case TIPC_CMD_DUMP_LOG:
                rep_tlv_buf = tipc_cfg_reply_error_string(TIPC_CFG_NOT_SUPPORTED

diff --git a/net/tipc/core.c b/net/tipc/core.c
index b858f2003523e7a94b2c62bcb7c9e9110a03e2d0..73e5eac2073556b26c56f7d861fdf4eb138db807 100644 (file)
--- a/net/tipc/core.c
+++ b/net/tipc/core.c
@@ -53,7 +53,6 @@ int tipc_random __read_mostly;
 /* configurable TIPC parameters */
 u32 tipc_own_addr __read_mostly;
 int tipc_max_ports __read_mostly;
-int tipc_max_subscriptions;
 int tipc_max_publications;
 int tipc_net_id __read_mostly;
 int tipc_remote_management __read_mostly;
@@ -157,7 +156,6 @@ static int __init tipc_init(void)
        tipc_own_addr = 0;
        tipc_remote_management = 1;
        tipc_max_publications = 10000;
-       tipc_max_subscriptions = 2000;
        tipc_max_ports = CONFIG_TIPC_PORTS;
        tipc_net_id = 4711;
 

diff --git a/net/tipc/core.h b/net/tipc/core.h
index 4c5705ac8a5a3c2464801e463ac5046c3636766c..ef01412b098964fad436cd79ada82aae02ee84df 100644 (file)
--- a/net/tipc/core.h
+++ b/net/tipc/core.h
@@ -60,7 +60,8 @@
 
 #define TIPC_MOD_VER "2.0.0"
 
-#define ULTRA_STRING_MAX_LEN 32768
+#define ULTRA_STRING_MAX_LEN   32768
+#define TIPC_MAX_SUBSCRIPTIONS 65535
 
 struct tipc_msg;       /* msg.h */
 
@@ -76,7 +77,6 @@ int tipc_snprintf(char *buf, int len, const char *fmt, ...);
  */
 extern u32 tipc_own_addr __read_mostly;
 extern int tipc_max_ports __read_mostly;
-extern int tipc_max_subscriptions;
 extern int tipc_max_publications;
 extern int tipc_net_id __read_mostly;
 extern int tipc_remote_management __read_mostly;

diff --git a/net/tipc/subscr.c b/net/tipc/subscr.c
index 5ed5965eb0bee40ec7e475d814370426b1e45a88..0f7d0d007e22b9cbe94665c19b1d1ac2d6328f02 100644 (file)
--- a/net/tipc/subscr.c
+++ b/net/tipc/subscr.c
@@ -304,9 +304,9 @@ static struct tipc_subscription *subscr_subscribe(struct tipc_subscr *s,
        }
 
        /* Refuse subscription if global limit exceeded */
-       if (atomic_read(&topsrv.subscription_count) >= tipc_max_subscriptions) {
+       if (atomic_read(&topsrv.subscription_count) >= TIPC_MAX_SUBSCRIPTIONS) {
                pr_warn("Subscription rejected, limit reached (%u)\n",
-                       tipc_max_subscriptions);
+                       TIPC_MAX_SUBSCRIPTIONS);
                subscr_terminate(subscriber);
                return NULL;
        }