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authorLinus Torvalds <torvalds@linux-foundation.org>2011-01-06 23:30:19 +0300
committerLinus Torvalds <torvalds@linux-foundation.org>2011-01-06 23:30:19 +0300
commitabb359450f20c32ae03039d8736f12b1d561caf5 (patch)
tree6e8723885feb66a138f19f0ff31615dc13a8d859 /net/tipc/user_reg.c
parentcb600d2f83c854ec3d6660063e4466431999489b (diff)
parent4e3dbdb1392a83bd21a6ff8f6bc785495058d37c (diff)
downloadlinux-abb359450f20c32ae03039d8736f12b1d561caf5.tar.xz
Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6
* git://git.kernel.org/pub/scm/linux/kernel/git/davem/net-next-2.6: (1436 commits) cassini: Use local-mac-address prom property for Cassini MAC address net: remove the duplicate #ifdef __KERNEL__ net: bridge: check the length of skb after nf_bridge_maybe_copy_header() netconsole: clarify stopping message netconsole: don't announce stopping if nothing happened cnic: Fix the type field in SPQ messages netfilter: fix export secctx error handling netfilter: fix the race when initializing nf_ct_expect_hash_rnd ipv4: IP defragmentation must be ECN aware net: r6040: Return proper error for r6040_init_one dcb: use after free in dcb_flushapp() dcb: unlock on error in dcbnl_ieee_get() net: ixp4xx_eth: Return proper error for eth_init_one include/linux/if_ether.h: Add #define ETH_P_LINK_CTL for HPNA and wlan local tunnel net: add POLLPRI to sock_def_readable() af_unix: Avoid socket->sk NULL OOPS in stream connect security hooks. net_sched: pfifo_head_drop problem mac80211: remove stray extern mac80211: implement off-channel TX using hw r-o-c offload mac80211: implement hardware offload for remain-on-channel ...
Diffstat (limited to 'net/tipc/user_reg.c')
-rw-r--r--net/tipc/user_reg.c264
1 files changed, 0 insertions, 264 deletions
diff --git a/net/tipc/user_reg.c b/net/tipc/user_reg.c
deleted file mode 100644
index 506928803162..000000000000
--- a/net/tipc/user_reg.c
+++ /dev/null
@@ -1,264 +0,0 @@
-/*
- * net/tipc/user_reg.c: TIPC user registry code
- *
- * Copyright (c) 2000-2006, Ericsson AB
- * Copyright (c) 2004-2005, Wind River Systems
- * All rights reserved.
- *
- * Redistribution and use in source and binary forms, with or without
- * modification, are permitted provided that the following conditions are met:
- *
- * 1. Redistributions of source code must retain the above copyright
- * notice, this list of conditions and the following disclaimer.
- * 2. Redistributions in binary form must reproduce the above copyright
- * notice, this list of conditions and the following disclaimer in the
- * documentation and/or other materials provided with the distribution.
- * 3. Neither the names of the copyright holders nor the names of its
- * contributors may be used to endorse or promote products derived from
- * this software without specific prior written permission.
- *
- * Alternatively, this software may be distributed under the terms of the
- * GNU General Public License ("GPL") version 2 as published by the Free
- * Software Foundation.
- *
- * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
- * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
- * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
- * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
- * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
- * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
- * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
- * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
- * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
- * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
- * POSSIBILITY OF SUCH DAMAGE.
- */
-
-#include "core.h"
-#include "user_reg.h"
-
-/*
- * TIPC user registry keeps track of users of the tipc_port interface.
- *
- * The registry utilizes an array of "TIPC user" entries;
- * a user's ID is the index of their associated array entry.
- * Array entry 0 is not used, so userid 0 is not valid;
- * TIPC sometimes uses this value to denote an anonymous user.
- * The list of free entries is initially chained from last entry to entry 1.
- */
-
-/**
- * struct tipc_user - registered TIPC user info
- * @next: index of next free registry entry (or -1 for an allocated entry)
- * @callback: ptr to routine to call when TIPC mode changes (NULL if none)
- * @usr_handle: user-defined value passed to callback routine
- * @ports: list of user ports owned by the user
- */
-
-struct tipc_user {
- int next;
- tipc_mode_event callback;
- void *usr_handle;
- struct list_head ports;
-};
-
-#define MAX_USERID 64
-#define USER_LIST_SIZE ((MAX_USERID + 1) * sizeof(struct tipc_user))
-
-static struct tipc_user *users = NULL;
-static u32 next_free_user = MAX_USERID + 1;
-static DEFINE_SPINLOCK(reg_lock);
-
-/**
- * reg_init - create TIPC user registry (but don't activate it)
- *
- * If registry has been pre-initialized it is left "as is".
- * NOTE: This routine may be called when TIPC is inactive.
- */
-
-static int reg_init(void)
-{
- u32 i;
-
- spin_lock_bh(&reg_lock);
- if (!users) {
- users = kzalloc(USER_LIST_SIZE, GFP_ATOMIC);
- if (users) {
- for (i = 1; i <= MAX_USERID; i++) {
- users[i].next = i - 1;
- }
- next_free_user = MAX_USERID;
- }
- }
- spin_unlock_bh(&reg_lock);
- return users ? 0 : -ENOMEM;
-}
-
-/**
- * reg_callback - inform TIPC user about current operating mode
- */
-
-static void reg_callback(struct tipc_user *user_ptr)
-{
- tipc_mode_event cb;
- void *arg;
-
- spin_lock_bh(&reg_lock);
- cb = user_ptr->callback;
- arg = user_ptr->usr_handle;
- spin_unlock_bh(&reg_lock);
-
- if (cb)
- cb(arg, tipc_mode, tipc_own_addr);
-}
-
-/**
- * tipc_reg_start - activate TIPC user registry
- */
-
-int tipc_reg_start(void)
-{
- u32 u;
- int res;
-
- if ((res = reg_init()))
- return res;
-
- for (u = 1; u <= MAX_USERID; u++) {
- if (users[u].callback)
- tipc_k_signal((Handler)reg_callback,
- (unsigned long)&users[u]);
- }
- return 0;
-}
-
-/**
- * tipc_reg_stop - shut down & delete TIPC user registry
- */
-
-void tipc_reg_stop(void)
-{
- int id;
-
- if (!users)
- return;
-
- for (id = 1; id <= MAX_USERID; id++) {
- if (users[id].callback)
- reg_callback(&users[id]);
- }
- kfree(users);
- users = NULL;
-}
-
-/**
- * tipc_attach - register a TIPC user
- *
- * NOTE: This routine may be called when TIPC is inactive.
- */
-
-int tipc_attach(u32 *userid, tipc_mode_event cb, void *usr_handle)
-{
- struct tipc_user *user_ptr;
-
- if ((tipc_mode == TIPC_NOT_RUNNING) && !cb)
- return -ENOPROTOOPT;
- if (!users)
- reg_init();
-
- spin_lock_bh(&reg_lock);
- if (!next_free_user) {
- spin_unlock_bh(&reg_lock);
- return -EBUSY;
- }
- user_ptr = &users[next_free_user];
- *userid = next_free_user;
- next_free_user = user_ptr->next;
- user_ptr->next = -1;
- spin_unlock_bh(&reg_lock);
-
- user_ptr->callback = cb;
- user_ptr->usr_handle = usr_handle;
- INIT_LIST_HEAD(&user_ptr->ports);
- atomic_inc(&tipc_user_count);
-
- if (cb && (tipc_mode != TIPC_NOT_RUNNING))
- tipc_k_signal((Handler)reg_callback, (unsigned long)user_ptr);
- return 0;
-}
-
-/**
- * tipc_detach - deregister a TIPC user
- */
-
-void tipc_detach(u32 userid)
-{
- struct tipc_user *user_ptr;
- struct list_head ports_temp;
- struct user_port *up_ptr, *temp_up_ptr;
-
- if ((userid == 0) || (userid > MAX_USERID))
- return;
-
- spin_lock_bh(&reg_lock);
- if ((!users) || (users[userid].next >= 0)) {
- spin_unlock_bh(&reg_lock);
- return;
- }
-
- user_ptr = &users[userid];
- user_ptr->callback = NULL;
- INIT_LIST_HEAD(&ports_temp);
- list_splice(&user_ptr->ports, &ports_temp);
- user_ptr->next = next_free_user;
- next_free_user = userid;
- spin_unlock_bh(&reg_lock);
-
- atomic_dec(&tipc_user_count);
-
- list_for_each_entry_safe(up_ptr, temp_up_ptr, &ports_temp, uport_list) {
- tipc_deleteport(up_ptr->ref);
- }
-}
-
-/**
- * tipc_reg_add_port - register a user's driver port
- */
-
-int tipc_reg_add_port(struct user_port *up_ptr)
-{
- struct tipc_user *user_ptr;
-
- if (up_ptr->user_ref == 0)
- return 0;
- if (up_ptr->user_ref > MAX_USERID)
- return -EINVAL;
- if ((tipc_mode == TIPC_NOT_RUNNING) || !users )
- return -ENOPROTOOPT;
-
- spin_lock_bh(&reg_lock);
- user_ptr = &users[up_ptr->user_ref];
- list_add(&up_ptr->uport_list, &user_ptr->ports);
- spin_unlock_bh(&reg_lock);
- return 0;
-}
-
-/**
- * tipc_reg_remove_port - deregister a user's driver port
- */
-
-int tipc_reg_remove_port(struct user_port *up_ptr)
-{
- if (up_ptr->user_ref == 0)
- return 0;
- if (up_ptr->user_ref > MAX_USERID)
- return -EINVAL;
- if (!users )
- return -ENOPROTOOPT;
-
- spin_lock_bh(&reg_lock);
- list_del_init(&up_ptr->uport_list);
- spin_unlock_bh(&reg_lock);
- return 0;
-}
-