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
117
118
119
120
121
122
123
124
125
126
127
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
/* Copyright (c) 2015, The Linux Foundation. All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are
* met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * 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.
* * Neither the name of The Linux Foundation nor the names of its
* contributors may be used to endorse or promote products derived
* from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED "AS IS" AND ANY EXPRESS OR IMPLIED
* WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND NON-INFRINGEMENT
* 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 <stdint.h>
#include <stdlib.h>
#include "sync.h"
#include "wifi_hal.h"
#include "common.h"
#include "ring_buffer.h"
#include "rb_wrapper.h"
#define LOG_TAG "WifiHAL"
wifi_error rb_init(hal_info *info, struct rb_info *rb_info, int id,
size_t size_of_buf, int num_bufs, char *name)
{
rb_info->rb_ctx = ring_buffer_init(size_of_buf, num_bufs);
if (rb_info->rb_ctx == NULL) {
ALOGE("Failed to init ring buffer");
return WIFI_ERROR_OUT_OF_MEMORY;
}
strlcpy(rb_info->name, name, MAX_RB_NAME_SIZE);
rb_info->ctx = info;
rb_info->id = id;
/* Initialize last_push_time */
gettimeofday(&rb_info->last_push_time, NULL);
return WIFI_SUCCESS;
}
void rb_deinit(struct rb_info *rb_info)
{
if (rb_info->rb_ctx) {
ring_buffer_deinit(rb_info->rb_ctx);
rb_info->rb_ctx = NULL;
}
rb_info->name[0] = '\0';
}
void get_rb_status(struct rb_info *rb_info, wifi_ring_buffer_status *rbs)
{
struct rb_stats rb_stats;
strlcpy((char *)rbs->name, rb_info->name, MAX_RB_NAME_SIZE);
rbs->flags = rb_info->flags;
rbs->ring_id = rb_info->id;
rbs->verbose_level = rb_info->verbose_level;
rb_get_stats(rb_info->rb_ctx, &rb_stats);
rbs->ring_buffer_byte_size = rb_stats.max_num_bufs *
rb_stats.each_buf_size;
rbs->written_bytes = rb_stats.total_bytes_written;
rbs->read_bytes = rb_stats.total_bytes_read;
rbs->written_records = rb_info->written_records;
}
int is_rb_name_match(struct rb_info *rb_info, char *name)
{
return (strncmp(rb_info->name, name, MAX_RB_NAME_SIZE) == 0);
}
wifi_error ring_buffer_write(struct rb_info *rb_info, u8 *buf, size_t length,
int no_of_records, size_t record_length)
{
enum rb_status status;
status = rb_write(rb_info->rb_ctx, buf, length, 0, record_length);
if ((status == RB_FULL) || (status == RB_RETRY)) {
push_out_rb_data(rb_info);
/* Try writing the data after reading it out */
status = rb_write(rb_info->rb_ctx, buf, length, 0, record_length);
if (status != RB_SUCCESS) {
ALOGE("Failed to rewrite %zu bytes to rb %s with error %d", length,
rb_info->name, status);
return WIFI_ERROR_UNKNOWN;
}
} else if (status == RB_FAILURE) {
ALOGE("Failed to write %zu bytes to rb %s with error %d", length,
rb_info->name, status);
return WIFI_ERROR_UNKNOWN;
}
rb_info->written_records += no_of_records;
return WIFI_SUCCESS;
}
void push_out_rb_data(void *cb_ctx)
{
struct rb_info *rb_info = (struct rb_info *)cb_ctx;
hal_info *info = (hal_info *)rb_info->ctx;
wifi_ring_buffer_status rbs;
wifi_ring_buffer_data_handler handler;
while (1) {
size_t length = 0;
u8 *buf;
buf = rb_get_read_buf(rb_info->rb_ctx, &length);
if (buf == NULL) {
break;
}
get_rb_status(rb_info, &rbs);
pthread_mutex_lock(&info->lh_lock);
handler.on_ring_buffer_data = info->on_ring_buffer_data;
pthread_mutex_unlock(&info->lh_lock);
if (handler.on_ring_buffer_data) {
handler.on_ring_buffer_data(rb_info->name, (char *)buf,
length, &rbs);
}
free(buf);
};
gettimeofday(&rb_info->last_push_time, NULL);
}
wifi_error rb_start_logging(struct rb_info *rb_info, u32 verbose_level,
u32 flags, u32 max_interval_sec, u32 min_data_size)
{
rb_info->verbose_level = verbose_level;
rb_info->flags = flags;
rb_info->max_interval_sec = max_interval_sec;
rb_config_threshold(rb_info->rb_ctx, min_data_size, push_out_rb_data, rb_info);
return WIFI_SUCCESS;
}
void rb_check_for_timeout(struct rb_info *rb_info, struct timeval *now)
{
if (rb_info->max_interval_sec == 0) {
return;
}
if (now->tv_sec >=
(rb_info->last_push_time.tv_sec +
(__kernel_time_t)rb_info->max_interval_sec)) {
push_out_rb_data(rb_info);
}
}
|
