1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
|
/* SPDX-License-Identifier: GPL-2.0-only */
/*
* Copyright (C) 2016 Felix Fietkau <nbd@nbd.name>
* Copyright (C) 2004 - 2009 Ivo van Doorn <IvDoorn@gmail.com>
*/
#ifndef __MT76_UTIL_H
#define __MT76_UTIL_H
#include <linux/skbuff.h>
#include <linux/bitops.h>
#include <linux/bitfield.h>
#include <net/mac80211.h>
struct mt76_worker
{
struct task_struct *task;
void (*fn)(struct mt76_worker *);
unsigned long state;
};
enum {
MT76_WORKER_SCHEDULED,
MT76_WORKER_RUNNING,
};
#define MT76_INCR(_var, _size) \
(_var = (((_var) + 1) % (_size)))
int mt76_wcid_alloc(u32 *mask, int size);
static inline void
mt76_wcid_mask_set(u32 *mask, int idx)
{
mask[idx / 32] |= BIT(idx % 32);
}
static inline void
mt76_wcid_mask_clear(u32 *mask, int idx)
{
mask[idx / 32] &= ~BIT(idx % 32);
}
static inline void
mt76_skb_set_moredata(struct sk_buff *skb, bool enable)
{
struct ieee80211_hdr *hdr = (struct ieee80211_hdr *)skb->data;
if (enable)
hdr->frame_control |= cpu_to_le16(IEEE80211_FCTL_MOREDATA);
else
hdr->frame_control &= ~cpu_to_le16(IEEE80211_FCTL_MOREDATA);
}
int __mt76_worker_fn(void *ptr);
static inline int
mt76_worker_setup(struct ieee80211_hw *hw, struct mt76_worker *w,
void (*fn)(struct mt76_worker *),
const char *name)
{
const char *dev_name = wiphy_name(hw->wiphy);
int ret;
if (fn)
w->fn = fn;
w->task = kthread_run(__mt76_worker_fn, w,
"mt76-%s %s", name, dev_name);
if (IS_ERR(w->task)) {
ret = PTR_ERR(w->task);
w->task = NULL;
return ret;
}
return 0;
}
static inline void mt76_worker_schedule(struct mt76_worker *w)
{
if (!w->task)
return;
if (!test_and_set_bit(MT76_WORKER_SCHEDULED, &w->state) &&
!test_bit(MT76_WORKER_RUNNING, &w->state))
wake_up_process(w->task);
}
static inline void mt76_worker_disable(struct mt76_worker *w)
{
if (!w->task)
return;
kthread_park(w->task);
WRITE_ONCE(w->state, 0);
}
static inline void mt76_worker_enable(struct mt76_worker *w)
{
if (!w->task)
return;
kthread_unpark(w->task);
mt76_worker_schedule(w);
}
static inline void mt76_worker_teardown(struct mt76_worker *w)
{
if (!w->task)
return;
kthread_stop(w->task);
w->task = NULL;
}
#endif
|
