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
163
164
165
166
167
168
169
170
171
172
173
174
175
176
177
178
179
180
181
182
183
184
185
186
187
188
189
190
191
192
193
194
195
196
197
198
199
200
201
202
203
204
205
206
207
208
209
210
211
212
213
214
215
216
217
218
219
220
221
222
223
224
225
226
227
228
229
230
231
232
233
234
235
236
237
238
239
240
241
242
243
244
245
246
247
248
249
250
251
252
253
254
255
256
257
258
259
260
261
262
263
264
|
/*
* control.c
*
* send and receive control packet and handle it
*/
#include "headers.h"
u_int control_init(struct net_adapter *adapter)
{
queue_init_list(adapter->ctl.q_received.head);
spin_lock_init(&adapter->ctl.q_received.lock);
queue_init_list(adapter->ctl.apps.process_list);
spin_lock_init(&adapter->ctl.apps.lock);
adapter->ctl.apps.ready = TRUE;
return STATUS_SUCCESS;
}
void control_remove(struct net_adapter *adapter)
{
struct buffer_descriptor *dsc;
struct process_descriptor *process;
unsigned long flags;
/* Free the received control packets queue */
while (!queue_empty(adapter->ctl.q_received.head)) {
/* queue is not empty */
dump_debug("Freeing Control Receive Queue");
dsc = (struct buffer_descriptor *)
queue_get_head(adapter->ctl.q_received.head);
if (!dsc) {
dump_debug("Fail...node is null");
continue;
}
queue_remove_head(adapter->ctl.q_received.head);
if (dsc->buffer)
kfree(dsc->buffer);
if (dsc)
kfree(dsc);
}
/* process list */
if (adapter->ctl.apps.ready) {
if (!queue_empty(adapter->ctl.apps.process_list)) {
/* first time gethead needed to get the dsc nodes */
process = (struct process_descriptor *)queue_get_head(adapter->ctl.apps.process_list);
spin_lock_irqsave(&adapter->ctl.apps.lock, flags);
while (process != NULL) {
if (process->irp) {
process->irp = FALSE;
wake_up_interruptible(&process->read_wait);
}
process = (struct process_descriptor *)process->node.next;
dump_debug("sangam dbg : waking processes");
}
spin_unlock_irqrestore(&adapter->ctl.apps.lock, flags);
/* delay for the process release */
msleep(100);
}
}
adapter->ctl.apps.ready = FALSE;
}
/* add received packet to pending list */
static void control_enqueue_buffer(struct net_adapter *adapter,
u_short type, void *buffer, u_long length)
{
struct buffer_descriptor *dsc;
struct process_descriptor *process;
/* Queue and wake read only if process exist. */
process = process_by_type(adapter, type);
if (process) {
dsc = (struct buffer_descriptor *)
kmalloc(sizeof(struct buffer_descriptor),
GFP_ATOMIC);
if (dsc == NULL) {
dump_debug("dsc Memory Alloc Failure *****");
return;
}
dsc->buffer = kmalloc(length, GFP_ATOMIC);
if (dsc->buffer == NULL) {
kfree(dsc);
dump_debug("dsc->buffer Memory Alloc Failure *****");
return;
}
memcpy(dsc->buffer, buffer, length);
/* fill out descriptor */
dsc->length = length;
dsc->type = type;
/* add to pending list */
queue_put_tail(adapter->ctl.q_received.head, dsc->node)
if (process->irp) {
process->irp = FALSE;
wake_up_interruptible(&process->read_wait);
}
} else
dump_debug("Waiting process not found skip the packet");
}
/* receive control data */
void control_recv(struct net_adapter *adapter, void *buffer, u_long length)
{
struct eth_header *hdr;
/* dump rx control frame */
if (adapter->pdata->g_cfg->enable_dump_msg == 1)
dump_buffer("Control Rx", (u_char *)buffer + 12, length - 12);
/* check halt flag */
if (adapter->halted)
return;
hdr = (struct eth_header *)buffer;
/* not found, add to pending buffers list */
spin_lock(&adapter->ctl.q_received.lock);
control_enqueue_buffer(adapter, hdr->type, buffer, length);
spin_unlock(&adapter->ctl.q_received.lock);
}
u_int control_send(struct net_adapter *adapter, void *buffer, u_long length)
{
if ((length + sizeof(struct hw_packet_header)) >= WIMAX_MAX_TOTAL_SIZE)
return STATUS_RESOURCES;
/* changed from SUCCESS return status */
return hw_send_data(adapter, buffer, length, CONTROL_PACKET);
}
struct process_descriptor *process_by_id(struct net_adapter *adapter, u_int id)
{
struct process_descriptor *process;
if (queue_empty(adapter->ctl.apps.process_list)) {
dump_debug("process_by_id: Empty process list");
return NULL;
}
/* first time gethead needed to get the dsc nodes */
process = (struct process_descriptor *)
queue_get_head(adapter->ctl.apps.process_list);
while (process != NULL) {
if (process->id == id) /* process found */
return process;
process = (struct process_descriptor *)process->node.next;
}
dump_debug("process_by_id: process not found");
return NULL;
}
struct process_descriptor *process_by_type(struct net_adapter *adapter,
u_short type)
{
struct process_descriptor *process;
if (queue_empty(adapter->ctl.apps.process_list)) {
dump_debug("process_by_type: Empty process list");
return NULL;
}
/* first time gethead needed to get the dsc nodes */
process = (struct process_descriptor *)
queue_get_head(adapter->ctl.apps.process_list);
while (process != NULL) {
if (process->type == type) /* process found */
return process;
process = (struct process_descriptor *)process->node.next;
}
dump_debug("process_by_type: process not found");
return NULL;
}
void remove_process(struct net_adapter *adapter, u_int id)
{
struct process_descriptor *curElem;
struct process_descriptor *prevElem = NULL;
if (queue_empty(adapter->ctl.apps.process_list))
return;
/* first time get head needed to get the dsc nodes */
curElem = (struct process_descriptor *)
queue_get_head(adapter->ctl.apps.process_list);
for ( ; curElem != NULL; prevElem = curElem,
curElem = (struct process_descriptor *)
curElem->node.next) {
if (curElem->id == id) { /* process found */
if (prevElem == NULL) {
/* only one node present */
(adapter->ctl.apps.process_list).next =
(((struct list_head *)curElem)->next);
if (!((adapter->ctl.apps.process_list).next)) {
/*rechain list pointer to next link*/
dump_debug("sangam dbg first and only process delete");
(adapter->ctl.apps.process_list).prev = NULL;
}
} else if (((struct list_head *)curElem)->next ==
NULL) {
/* last node */
dump_debug("sangam dbg only last packet");
((struct list_head *)prevElem)->next = NULL;
(adapter->ctl.apps.process_list).prev =
(struct list_head *)(prevElem);
} else {
/* middle node */
dump_debug("sangam dbg middle node");
((struct list_head *)prevElem)->next =
((struct list_head *)curElem)->next;
}
kfree(curElem);
break;
}
}
}
/* find buffer by buffer type */
struct buffer_descriptor *buffer_by_type(struct list_head ListHead,
u_short type)
{
struct buffer_descriptor *dsc;
if (queue_empty(ListHead))
return NULL;
/* first time gethead needed to get the dsc nodes */
dsc = (struct buffer_descriptor *)queue_get_head(ListHead);
while (dsc != NULL) {
if (dsc->type == type) /* process found */
return dsc;
dsc = (struct buffer_descriptor *)dsc->node.next;
}
return NULL;
}
void dump_buffer(const char *desc, u_char *buffer, u_int len)
{
char print_buf[256] = {0};
char chr[8] = {0};
int i;
/* dump packets */
u_char *b = buffer;
dump_debug("%s (%d) =>", desc, len);
for (i = 0; i < len; i++) {
sprintf(chr, " %02x", b[i]);
strcat(print_buf, chr);
if (((i + 1) != len) && (i % 16 == 15)) {
dump_debug(print_buf);
memset(print_buf, 0x0, 256);
}
}
dump_debug(print_buf);
}
|
