Release 4.11 drivers/staging/rtl8192u/ieee80211/ieee80211_crypt.c
/*
* Host AP crypto routines
*
* Copyright (c) 2002-2003, Jouni Malinen <jkmaline@cc.hut.fi>
* Portions Copyright (C) 2004, Intel Corporation <jketreno@linux.intel.com>
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
* published by the Free Software Foundation. See README and COPYING for
* more details.
*
*/
#include <linux/module.h>
#include <linux/init.h>
#include <linux/slab.h>
#include <linux/string.h>
#include <linux/errno.h>
#include "ieee80211.h"
MODULE_AUTHOR("Jouni Malinen");
MODULE_DESCRIPTION("HostAP crypto");
MODULE_LICENSE("GPL");
struct ieee80211_crypto_alg {
struct list_head list;
struct ieee80211_crypto_ops *ops;
};
struct ieee80211_crypto {
struct list_head algs;
spinlock_t lock;
};
static struct ieee80211_crypto *hcrypt;
void ieee80211_crypt_deinit_entries(struct ieee80211_device *ieee,
int force)
{
struct list_head *ptr, *n;
struct ieee80211_crypt_data *entry;
for (ptr = ieee->crypt_deinit_list.next, n = ptr->next;
ptr != &ieee->crypt_deinit_list; ptr = n, n = ptr->next) {
entry = list_entry(ptr, struct ieee80211_crypt_data, list);
if (atomic_read(&entry->refcnt) != 0 && !force)
continue;
list_del(ptr);
if (entry->ops)
entry->ops->deinit(entry->priv);
kfree(entry);
}
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jerry Chuang | 116 | 100.00% | 1 | 100.00% |
Total | 116 | 100.00% | 1 | 100.00% |
void ieee80211_crypt_deinit_handler(unsigned long data)
{
struct ieee80211_device *ieee = (struct ieee80211_device *)data;
unsigned long flags;
spin_lock_irqsave(&ieee->lock, flags);
ieee80211_crypt_deinit_entries(ieee, 0);
if (!list_empty(&ieee->crypt_deinit_list)) {
netdev_dbg(ieee->dev, "%s: entries remaining in delayed crypt deletion list\n",
ieee->dev->name);
ieee->crypt_deinit_timer.expires = jiffies + HZ;
add_timer(&ieee->crypt_deinit_timer);
}
spin_unlock_irqrestore(&ieee->lock, flags);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jerry Chuang | 92 | 93.88% | 1 | 33.33% |
Ksenija Stanojevic | 5 | 5.10% | 1 | 33.33% |
Dilek Uzulmez | 1 | 1.02% | 1 | 33.33% |
Total | 98 | 100.00% | 3 | 100.00% |
void ieee80211_crypt_delayed_deinit(struct ieee80211_device *ieee,
struct ieee80211_crypt_data **crypt)
{
struct ieee80211_crypt_data *tmp;
unsigned long flags;
if (!(*crypt))
return;
tmp = *crypt;
*crypt = NULL;
/* must not run ops->deinit() while there may be pending encrypt or
* decrypt operations. Use a list of delayed deinits to avoid needing
* locking.
*/
spin_lock_irqsave(&ieee->lock, flags);
list_add(&tmp->list, &ieee->crypt_deinit_list);
if (!timer_pending(&ieee->crypt_deinit_timer)) {
ieee->crypt_deinit_timer.expires = jiffies + HZ;
add_timer(&ieee->crypt_deinit_timer);
}
spin_unlock_irqrestore(&ieee->lock, flags);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jerry Chuang | 105 | 96.33% | 1 | 33.33% |
simran singhal | 3 | 2.75% | 1 | 33.33% |
Derek Robson | 1 | 0.92% | 1 | 33.33% |
Total | 109 | 100.00% | 3 | 100.00% |
int ieee80211_register_crypto_ops(struct ieee80211_crypto_ops *ops)
{
unsigned long flags;
struct ieee80211_crypto_alg *alg;
if (!hcrypt)
return -1;
alg = kzalloc(sizeof(*alg), GFP_KERNEL);
if (!alg)
return -ENOMEM;
alg->ops = ops;
spin_lock_irqsave(&hcrypt->lock, flags);
list_add(&alg->list, &hcrypt->algs);
spin_unlock_irqrestore(&hcrypt->lock, flags);
pr_debug("ieee80211_crypt: registered algorithm '%s'\n",
ops->name);
return 0;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jerry Chuang | 97 | 96.04% | 1 | 25.00% |
simran singhal | 2 | 1.98% | 1 | 25.00% |
Julia Lawall | 1 | 0.99% | 1 | 25.00% |
Ksenija Stanojevic | 1 | 0.99% | 1 | 25.00% |
Total | 101 | 100.00% | 4 | 100.00% |
int ieee80211_unregister_crypto_ops(struct ieee80211_crypto_ops *ops)
{
unsigned long flags;
struct list_head *ptr;
struct ieee80211_crypto_alg *del_alg = NULL;
if (!hcrypt)
return -1;
spin_lock_irqsave(&hcrypt->lock, flags);
for (ptr = hcrypt->algs.next; ptr != &hcrypt->algs; ptr = ptr->next) {
struct ieee80211_crypto_alg *alg =
(struct ieee80211_crypto_alg *)ptr;
if (alg->ops == ops) {
list_del(&alg->list);
del_alg = alg;
break;
}
}
spin_unlock_irqrestore(&hcrypt->lock, flags);
if (del_alg) {
pr_debug("ieee80211_crypt: unregistered algorithm '%s'\n",
ops->name);
kfree(del_alg);
}
return del_alg ? 0 : -1;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jerry Chuang | 140 | 97.90% | 1 | 25.00% |
simran singhal | 1 | 0.70% | 1 | 25.00% |
Ksenija Stanojevic | 1 | 0.70% | 1 | 25.00% |
Dilek Uzulmez | 1 | 0.70% | 1 | 25.00% |
Total | 143 | 100.00% | 4 | 100.00% |
struct ieee80211_crypto_ops *ieee80211_get_crypto_ops(const char *name)
{
unsigned long flags;
struct list_head *ptr;
struct ieee80211_crypto_alg *found_alg = NULL;
if (!hcrypt)
return NULL;
spin_lock_irqsave(&hcrypt->lock, flags);
for (ptr = hcrypt->algs.next; ptr != &hcrypt->algs; ptr = ptr->next) {
struct ieee80211_crypto_alg *alg =
(struct ieee80211_crypto_alg *)ptr;
if (strcmp(alg->ops->name, name) == 0) {
found_alg = alg;
break;
}
}
spin_unlock_irqrestore(&hcrypt->lock, flags);
if (found_alg)
return found_alg->ops;
return NULL;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jerry Chuang | 126 | 99.21% | 1 | 50.00% |
simran singhal | 1 | 0.79% | 1 | 50.00% |
Total | 127 | 100.00% | 2 | 100.00% |
static void *ieee80211_crypt_null_init(int keyidx) { return (void *) 1; }
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jerry Chuang | 17 | 100.00% | 1 | 100.00% |
Total | 17 | 100.00% | 1 | 100.00% |
static void ieee80211_crypt_null_deinit(void *priv) {}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jerry Chuang | 9 | 100.00% | 1 | 100.00% |
Total | 9 | 100.00% | 1 | 100.00% |
static struct ieee80211_crypto_ops ieee80211_crypt_null = {
.name = "NULL",
.init = ieee80211_crypt_null_init,
.deinit = ieee80211_crypt_null_deinit,
.encrypt_mpdu = NULL,
.decrypt_mpdu = NULL,
.encrypt_msdu = NULL,
.decrypt_msdu = NULL,
.set_key = NULL,
.get_key = NULL,
.extra_prefix_len = 0,
.extra_postfix_len = 0,
.owner = THIS_MODULE,
};
int __init ieee80211_crypto_init(void)
{
int ret = -ENOMEM;
hcrypt = kzalloc(sizeof(*hcrypt), GFP_KERNEL);
if (!hcrypt)
goto out;
INIT_LIST_HEAD(&hcrypt->algs);
spin_lock_init(&hcrypt->lock);
ret = ieee80211_register_crypto_ops(&ieee80211_crypt_null);
if (ret < 0) {
kfree(hcrypt);
hcrypt = NULL;
}
out:
return ret;
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jerry Chuang | 80 | 98.77% | 1 | 50.00% |
Julia Lawall | 1 | 1.23% | 1 | 50.00% |
Total | 81 | 100.00% | 2 | 100.00% |
void __exit ieee80211_crypto_deinit(void)
{
struct list_head *ptr, *n;
if (!hcrypt)
return;
for (ptr = hcrypt->algs.next, n = ptr->next; ptr != &hcrypt->algs;
ptr = n, n = ptr->next) {
struct ieee80211_crypto_alg *alg =
(struct ieee80211_crypto_alg *)ptr;
list_del(ptr);
pr_debug("ieee80211_crypt: unregistered algorithm '%s' (deinit)\n",
alg->ops->name);
kfree(alg);
}
kfree(hcrypt);
}
Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jerry Chuang | 92 | 96.84% | 1 | 25.00% |
Ksenija Stanojevic | 1 | 1.05% | 1 | 25.00% |
Dilek Uzulmez | 1 | 1.05% | 1 | 25.00% |
simran singhal | 1 | 1.05% | 1 | 25.00% |
Total | 95 | 100.00% | 4 | 100.00% |
Overall Contributors
Person | Tokens | Prop | Commits | CommitProp |
Jerry Chuang | 1005 | 97.67% | 1 | 14.29% |
Ksenija Stanojevic | 10 | 0.97% | 2 | 28.57% |
simran singhal | 8 | 0.78% | 1 | 14.29% |
Dilek Uzulmez | 3 | 0.29% | 1 | 14.29% |
Julia Lawall | 2 | 0.19% | 1 | 14.29% |
Derek Robson | 1 | 0.10% | 1 | 14.29% |
Total | 1029 | 100.00% | 7 | 100.00% |
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