6db4831e98
Android 14
119 lines
2.4 KiB
C
119 lines
2.4 KiB
C
/*
|
|
* Copyright (c) 2015-2016 Quantenna Communications, Inc.
|
|
* All rights reserved.
|
|
*
|
|
* This program is free software; you can redistribute it and/or
|
|
* modify it under the terms of the GNU General Public License
|
|
* as published by the Free Software Foundation; either version 2
|
|
* of the License, or (at your option) any later version.
|
|
*
|
|
* This program is distributed in the hope that it will be useful,
|
|
* but WITHOUT ANY WARRANTY; without even the implied warranty of
|
|
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
|
|
* GNU General Public License for more details.
|
|
*
|
|
*/
|
|
|
|
#include "util.h"
|
|
|
|
void qtnf_sta_list_init(struct qtnf_sta_list *list)
|
|
{
|
|
if (unlikely(!list))
|
|
return;
|
|
|
|
INIT_LIST_HEAD(&list->head);
|
|
atomic_set(&list->size, 0);
|
|
}
|
|
|
|
struct qtnf_sta_node *qtnf_sta_list_lookup(struct qtnf_sta_list *list,
|
|
const u8 *mac)
|
|
{
|
|
struct qtnf_sta_node *node;
|
|
|
|
if (unlikely(!mac))
|
|
return NULL;
|
|
|
|
list_for_each_entry(node, &list->head, list) {
|
|
if (ether_addr_equal(node->mac_addr, mac))
|
|
return node;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct qtnf_sta_node *qtnf_sta_list_lookup_index(struct qtnf_sta_list *list,
|
|
size_t index)
|
|
{
|
|
struct qtnf_sta_node *node;
|
|
|
|
if (qtnf_sta_list_size(list) <= index)
|
|
return NULL;
|
|
|
|
list_for_each_entry(node, &list->head, list) {
|
|
if (index-- == 0)
|
|
return node;
|
|
}
|
|
|
|
return NULL;
|
|
}
|
|
|
|
struct qtnf_sta_node *qtnf_sta_list_add(struct qtnf_vif *vif,
|
|
const u8 *mac)
|
|
{
|
|
struct qtnf_sta_list *list = &vif->sta_list;
|
|
struct qtnf_sta_node *node;
|
|
|
|
if (unlikely(!mac))
|
|
return NULL;
|
|
|
|
node = qtnf_sta_list_lookup(list, mac);
|
|
|
|
if (node)
|
|
goto done;
|
|
|
|
node = kzalloc(sizeof(*node), GFP_KERNEL);
|
|
if (unlikely(!node))
|
|
goto done;
|
|
|
|
ether_addr_copy(node->mac_addr, mac);
|
|
list_add_tail(&node->list, &list->head);
|
|
atomic_inc(&list->size);
|
|
++vif->generation;
|
|
|
|
done:
|
|
return node;
|
|
}
|
|
|
|
bool qtnf_sta_list_del(struct qtnf_vif *vif, const u8 *mac)
|
|
{
|
|
struct qtnf_sta_list *list = &vif->sta_list;
|
|
struct qtnf_sta_node *node;
|
|
bool ret = false;
|
|
|
|
node = qtnf_sta_list_lookup(list, mac);
|
|
|
|
if (node) {
|
|
list_del(&node->list);
|
|
atomic_dec(&list->size);
|
|
kfree(node);
|
|
++vif->generation;
|
|
ret = true;
|
|
}
|
|
|
|
return ret;
|
|
}
|
|
|
|
void qtnf_sta_list_free(struct qtnf_sta_list *list)
|
|
{
|
|
struct qtnf_sta_node *node, *tmp;
|
|
|
|
atomic_set(&list->size, 0);
|
|
|
|
list_for_each_entry_safe(node, tmp, &list->head, list) {
|
|
list_del(&node->list);
|
|
kfree(node);
|
|
}
|
|
|
|
INIT_LIST_HEAD(&list->head);
|
|
}
|