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![Julia Lawall](/assets/img/avatar_default.png)
Use kcalloc or kzalloc rather than the combination of kmalloc and memset. The semantic patch that makes this change is as follows: (http://coccinelle.lip6.fr/) // <smpl> @@ expression x,y,flags; statement S; type T; @@ x = - kmalloc + kcalloc ( - y * sizeof(T), + y, sizeof(T), flags); if (x == NULL) S -memset(x, 0, y * sizeof(T)); @@ expression x,size,flags; statement S; @@ -x = kmalloc(size,flags); +x = kzalloc(size,flags); if (x == NULL) S -memset(x, 0, size); // </smpl> Signed-off-by: Julia Lawall <julia@diku.dk>
207 lines
5.4 KiB
C
207 lines
5.4 KiB
C
/*******************************************************************************
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Copyright(c) 2004 Intel Corporation. All rights reserved.
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Portions of this file are based on the WEP enablement code provided by the
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Host AP project hostap-drivers v0.1.3
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Copyright (c) 2001-2002, SSH Communications Security Corp and Jouni Malinen
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<jkmaline@cc.hut.fi>
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Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
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This program is free software; you can redistribute it and/or modify it
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under the terms of version 2 of the GNU General Public License as
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published by the Free Software Foundation.
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This program is distributed in the hope that it will be useful, but WITHOUT
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ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
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FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License for
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more details.
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You should have received a copy of the GNU General Public License along with
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this program; if not, write to the Free Software Foundation, Inc., 59
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Temple Place - Suite 330, Boston, MA 02111-1307, USA.
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The full GNU General Public License is included in this distribution in the
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file called LICENSE.
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Contact Information:
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James P. Ketrenos <ipw2100-admin@linux.intel.com>
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Intel Corporation, 5200 N.E. Elam Young Parkway, Hillsboro, OR 97124-6497
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*******************************************************************************/
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#include <linux/compiler.h>
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//#include <linux/config.h>
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#include <linux/errno.h>
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#include <linux/if_arp.h>
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#include <linux/in6.h>
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#include <linux/in.h>
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#include <linux/ip.h>
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#include <linux/kernel.h>
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#include <linux/module.h>
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#include <linux/netdevice.h>
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#include <linux/pci.h>
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#include <linux/proc_fs.h>
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#include <linux/skbuff.h>
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#include <linux/slab.h>
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#include <linux/tcp.h>
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#include <linux/types.h>
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#include <linux/version.h>
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#include <linux/wireless.h>
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#include <linux/etherdevice.h>
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#include <asm/uaccess.h>
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#include <net/arp.h>
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#include <net/net_namespace.h>
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#include "ieee80211.h"
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MODULE_DESCRIPTION("802.11 data/management/control stack");
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MODULE_AUTHOR("Copyright (C) 2004 Intel Corporation <jketreno@linux.intel.com>");
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MODULE_LICENSE("GPL");
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#define DRV_NAME "ieee80211"
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static inline int ieee80211_networks_allocate(struct ieee80211_device *ieee)
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{
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if (ieee->networks)
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return 0;
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ieee->networks = kcalloc(
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MAX_NETWORK_COUNT, sizeof(struct ieee80211_network),
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GFP_KERNEL);
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if (!ieee->networks) {
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printk(KERN_WARNING "%s: Out of memory allocating beacons\n",
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ieee->dev->name);
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return -ENOMEM;
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}
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return 0;
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}
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static inline void ieee80211_networks_free(struct ieee80211_device *ieee)
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{
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if (!ieee->networks)
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return;
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kfree(ieee->networks);
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ieee->networks = NULL;
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}
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static inline void ieee80211_networks_initialize(struct ieee80211_device *ieee)
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{
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int i;
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INIT_LIST_HEAD(&ieee->network_free_list);
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INIT_LIST_HEAD(&ieee->network_list);
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for (i = 0; i < MAX_NETWORK_COUNT; i++)
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list_add_tail(&ieee->networks[i].list, &ieee->network_free_list);
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}
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struct net_device *alloc_ieee80211(int sizeof_priv)
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{
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struct ieee80211_device *ieee;
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struct net_device *dev;
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int i,err;
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IEEE80211_DEBUG_INFO("Initializing...\n");
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dev = alloc_etherdev(sizeof(struct ieee80211_device) + sizeof_priv);
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if (!dev) {
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IEEE80211_ERROR("Unable to network device.\n");
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goto failed;
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}
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ieee = netdev_priv(dev);
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ieee->dev = dev;
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err = ieee80211_networks_allocate(ieee);
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if (err) {
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IEEE80211_ERROR("Unable to allocate beacon storage: %d\n",
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err);
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goto failed;
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}
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ieee80211_networks_initialize(ieee);
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/* Default fragmentation threshold is maximum payload size */
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ieee->fts = DEFAULT_FTS;
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ieee->scan_age = DEFAULT_MAX_SCAN_AGE;
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ieee->open_wep = 1;
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/* Default to enabling full open WEP with host based encrypt/decrypt */
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ieee->host_encrypt = 1;
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ieee->host_decrypt = 1;
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ieee->ieee802_1x = 1; /* Default to supporting 802.1x */
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INIT_LIST_HEAD(&ieee->crypt_deinit_list);
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init_timer(&ieee->crypt_deinit_timer);
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ieee->crypt_deinit_timer.data = (unsigned long)ieee;
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ieee->crypt_deinit_timer.function = ieee80211_crypt_deinit_handler;
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spin_lock_init(&ieee->lock);
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spin_lock_init(&ieee->wpax_suitlist_lock);
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ieee->wpax_type_set = 0;
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ieee->wpa_enabled = 0;
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ieee->tkip_countermeasures = 0;
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ieee->drop_unencrypted = 0;
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ieee->privacy_invoked = 0;
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ieee->ieee802_1x = 1;
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ieee->raw_tx = 0;
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ieee80211_softmac_init(ieee);
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for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++)
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INIT_LIST_HEAD(&ieee->ibss_mac_hash[i]);
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for (i = 0; i < 17; i++) {
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ieee->last_rxseq_num[i] = -1;
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ieee->last_rxfrag_num[i] = -1;
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ieee->last_packet_time[i] = 0;
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}
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//These function were added to load crypte module autoly
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ieee80211_tkip_null();
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ieee80211_wep_null();
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ieee80211_ccmp_null();
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return dev;
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failed:
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if (dev)
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free_netdev(dev);
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return NULL;
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}
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void free_ieee80211(struct net_device *dev)
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{
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struct ieee80211_device *ieee = netdev_priv(dev);
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int i;
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struct list_head *p, *q;
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ieee80211_softmac_free(ieee);
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del_timer_sync(&ieee->crypt_deinit_timer);
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ieee80211_crypt_deinit_entries(ieee, 1);
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for (i = 0; i < WEP_KEYS; i++) {
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struct ieee80211_crypt_data *crypt = ieee->crypt[i];
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if (crypt) {
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if (crypt->ops)
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crypt->ops->deinit(crypt->priv);
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kfree(crypt);
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ieee->crypt[i] = NULL;
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}
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}
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ieee80211_networks_free(ieee);
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for (i = 0; i < IEEE_IBSS_MAC_HASH_SIZE; i++) {
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list_for_each_safe(p, q, &ieee->ibss_mac_hash[i]) {
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kfree(list_entry(p, struct ieee_ibss_seq, list));
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list_del(p);
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}
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}
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free_netdev(dev);
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}
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