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@@ -1,218 +0,0 @@
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-/*
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- * net/tipc/user_reg.c: TIPC user registry code
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- *
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- * Copyright (c) 2000-2006, Ericsson AB
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- * Copyright (c) 2004-2005, Wind River Systems
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- * All rights reserved.
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- *
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- * Redistribution and use in source and binary forms, with or without
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- * modification, are permitted provided that the following conditions are met:
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- *
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- * 1. Redistributions of source code must retain the above copyright
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- * notice, this list of conditions and the following disclaimer.
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- * 2. Redistributions in binary form must reproduce the above copyright
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- * notice, this list of conditions and the following disclaimer in the
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- * documentation and/or other materials provided with the distribution.
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- * 3. Neither the names of the copyright holders nor the names of its
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- * contributors may be used to endorse or promote products derived from
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- * this software without specific prior written permission.
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- *
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- * Alternatively, this software may be distributed under the terms of the
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- * GNU General Public License ("GPL") version 2 as published by the Free
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- * Software Foundation.
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- *
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- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
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- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
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- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
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- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
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- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
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- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
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- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
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- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
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- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
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- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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- * POSSIBILITY OF SUCH DAMAGE.
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- */
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-
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-#include "core.h"
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-#include "user_reg.h"
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-
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-/*
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- * TIPC user registry keeps track of users of the tipc_port interface.
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- *
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- * The registry utilizes an array of "TIPC user" entries;
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- * a user's ID is the index of their associated array entry.
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- * Array entry 0 is not used, so userid 0 is not valid;
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- * TIPC sometimes uses this value to denote an anonymous user.
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- * The list of free entries is initially chained from last entry to entry 1.
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- */
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-
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-/**
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- * struct tipc_user - registered TIPC user info
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- * @next: index of next free registry entry (or -1 for an allocated entry)
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- * @ports: list of user ports owned by the user
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- */
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-
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-struct tipc_user {
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- int next;
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- struct list_head ports;
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-};
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-
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-#define MAX_USERID 64
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-#define USER_LIST_SIZE ((MAX_USERID + 1) * sizeof(struct tipc_user))
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-
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-static struct tipc_user *users = NULL;
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-static u32 next_free_user = MAX_USERID + 1;
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-static DEFINE_SPINLOCK(reg_lock);
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-
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-/**
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- * reg_init - create TIPC user registry (but don't activate it)
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- *
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- * If registry has been pre-initialized it is left "as is".
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- * NOTE: This routine may be called when TIPC is inactive.
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- */
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-
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-static int reg_init(void)
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-{
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- u32 i;
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-
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- spin_lock_bh(®_lock);
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- if (!users) {
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- users = kzalloc(USER_LIST_SIZE, GFP_ATOMIC);
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- if (users) {
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- for (i = 1; i <= MAX_USERID; i++) {
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- users[i].next = i - 1;
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- }
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- next_free_user = MAX_USERID;
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- }
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- }
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- spin_unlock_bh(®_lock);
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- return users ? 0 : -ENOMEM;
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-}
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-
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-/**
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- * tipc_reg_start - activate TIPC user registry
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- */
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-
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-int tipc_reg_start(void)
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-{
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- return reg_init();
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-}
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-
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-/**
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- * tipc_reg_stop - shut down & delete TIPC user registry
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- */
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-
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-void tipc_reg_stop(void)
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-{
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- if (!users)
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- return;
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-
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- kfree(users);
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- users = NULL;
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-}
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-
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-/**
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- * tipc_attach - register a TIPC user
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- *
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- * NOTE: This routine may be called when TIPC is inactive.
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- */
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-
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-int tipc_attach(u32 *userid)
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-{
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- struct tipc_user *user_ptr;
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-
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- if (!users)
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- reg_init();
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-
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- spin_lock_bh(®_lock);
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- if (!next_free_user) {
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- spin_unlock_bh(®_lock);
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- return -EBUSY;
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- }
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- user_ptr = &users[next_free_user];
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- *userid = next_free_user;
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- next_free_user = user_ptr->next;
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- user_ptr->next = -1;
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- spin_unlock_bh(®_lock);
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-
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- INIT_LIST_HEAD(&user_ptr->ports);
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- atomic_inc(&tipc_user_count);
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-
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- return 0;
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-}
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-
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-/**
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- * tipc_detach - deregister a TIPC user
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- */
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-
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-void tipc_detach(u32 userid)
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-{
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- struct tipc_user *user_ptr;
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- struct list_head ports_temp;
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- struct user_port *up_ptr, *temp_up_ptr;
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-
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- if ((userid == 0) || (userid > MAX_USERID))
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- return;
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-
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- spin_lock_bh(®_lock);
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- if ((!users) || (users[userid].next >= 0)) {
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- spin_unlock_bh(®_lock);
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- return;
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- }
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-
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- user_ptr = &users[userid];
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- INIT_LIST_HEAD(&ports_temp);
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- list_splice(&user_ptr->ports, &ports_temp);
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- user_ptr->next = next_free_user;
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- next_free_user = userid;
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- spin_unlock_bh(®_lock);
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-
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- atomic_dec(&tipc_user_count);
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-
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- list_for_each_entry_safe(up_ptr, temp_up_ptr, &ports_temp, uport_list) {
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- tipc_deleteport(up_ptr->ref);
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- }
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-}
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-
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-/**
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- * tipc_reg_add_port - register a user's driver port
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- */
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-
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-int tipc_reg_add_port(struct user_port *up_ptr)
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-{
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- struct tipc_user *user_ptr;
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-
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- if (up_ptr->user_ref == 0)
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- return 0;
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- if (up_ptr->user_ref > MAX_USERID)
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- return -EINVAL;
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- if ((tipc_mode == TIPC_NOT_RUNNING) || !users )
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- return -ENOPROTOOPT;
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-
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- spin_lock_bh(®_lock);
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- user_ptr = &users[up_ptr->user_ref];
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- list_add(&up_ptr->uport_list, &user_ptr->ports);
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- spin_unlock_bh(®_lock);
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- return 0;
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-}
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-
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-/**
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- * tipc_reg_remove_port - deregister a user's driver port
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- */
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-
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-int tipc_reg_remove_port(struct user_port *up_ptr)
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-{
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- if (up_ptr->user_ref == 0)
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- return 0;
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- if (up_ptr->user_ref > MAX_USERID)
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- return -EINVAL;
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- if (!users )
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- return -ENOPROTOOPT;
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-
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- spin_lock_bh(®_lock);
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- list_del_init(&up_ptr->uport_list);
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- spin_unlock_bh(®_lock);
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- return 0;
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-}
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-
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Allan Stephens