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
265
266
267
268
269
270
271
272
273
274
275
276
277
278
279
280
281
282
283
284
285
286
287
288
289
290
291
292
293
294
295
296
297
298
299
300
301
302
303
304
305
306
307
308
309
310
311
312
313
314
315
316
317
318
319
320
321
322
323
324
325
326
327
328
329
330
331
332
333
334
335
336
337
338
339
340
341
342
343
344
345
346
|
/*
*
* ===================================
* HARP | Host ATM Research Platform
* ===================================
*
*
* This Host ATM Research Platform ("HARP") file (the "Software") is
* made available by Network Computing Services, Inc. ("NetworkCS")
* "AS IS". NetworkCS does not provide maintenance, improvements or
* support of any kind.
*
* NETWORKCS MAKES NO WARRANTIES OR REPRESENTATIONS, EXPRESS OR IMPLIED,
* INCLUDING, BUT NOT LIMITED TO, IMPLIED WARRANTIES OF MERCHANTABILITY
* AND FITNESS FOR A PARTICULAR PURPOSE, AS TO ANY ELEMENT OF THE
* SOFTWARE OR ANY SUPPORT PROVIDED IN CONNECTION WITH THIS SOFTWARE.
* In no event shall NetworkCS be responsible for any damages, including
* but not limited to consequential damages, arising from or relating to
* any use of the Software or related support.
*
* Copyright 1994-1998 Network Computing Services, Inc.
*
* Copies of this Software may be made, however, the above copyright
* notice must be reproduced on all copies.
*
* @(#) $FreeBSD$
*
*/
/*
* FORE Systems 200-Series Adapter Support
* ---------------------------------------
*
* Virtual Channel Management
*
*/
#include <sys/param.h>
#include <sys/systm.h>
#include <sys/types.h>
#include <sys/errno.h>
#include <sys/time.h>
#include <sys/socket.h>
#include <sys/socketvar.h>
#include <net/if.h>
#include <netatm/port.h>
#include <netatm/queue.h>
#include <netatm/atm.h>
#include <netatm/atm_sys.h>
#include <netatm/atm_sap.h>
#include <netatm/atm_cm.h>
#include <netatm/atm_if.h>
#include <netatm/atm_vc.h>
#include <netatm/atm_stack.h>
#include <netatm/atm_pcb.h>
#include <netatm/atm_var.h>
#include <pci/pcivar.h>
#include <dev/hfa/fore.h>
#include <dev/hfa/fore_aali.h>
#include <dev/hfa/fore_slave.h>
#include <dev/hfa/fore_stats.h>
#include <dev/hfa/fore_var.h>
#include <dev/hfa/fore_include.h>
#ifndef lint
__RCSID("@(#) $FreeBSD$");
#endif
/*
* VCC Stack Instantiation
*
* This function is called via the common driver code during a device VCC
* stack instantiation. The common code has already validated some of
* the request so we just need to check a few more Fore-specific details.
*
* Called at splnet.
*
* Arguments:
* cup pointer to device common unit
* cvp pointer to common VCC entry
*
* Returns:
* 0 instantiation successful
* err instantiation failed - reason indicated
*
*/
int
fore_instvcc(cup, cvp)
Cmn_unit *cup;
Cmn_vcc *cvp;
{
Fore_vcc *fvp = (Fore_vcc *)cvp;
Atm_attributes *ap = &fvp->fv_connvc->cvc_attr;
/*
* Validate requested AAL
*/
switch (ap->aal.type) {
case ATM_AAL0:
fvp->fv_aal = FORE_AAL_0;
break;
case ATM_AAL3_4:
fvp->fv_aal = FORE_AAL_4;
if ((ap->aal.v.aal4.forward_max_SDU_size > FORE_IFF_MTU) ||
(ap->aal.v.aal4.backward_max_SDU_size > FORE_IFF_MTU))
return (EINVAL);
break;
case ATM_AAL5:
fvp->fv_aal = FORE_AAL_5;
if ((ap->aal.v.aal5.forward_max_SDU_size > FORE_IFF_MTU) ||
(ap->aal.v.aal5.backward_max_SDU_size > FORE_IFF_MTU))
return (EINVAL);
break;
default:
return (EINVAL);
}
return (0);
}
/*
* Open a VCC
*
* This function is called via the common driver code after receiving a
* stack *_INIT command. The common code has already validated most of
* the request so we just need to check a few more Fore-specific details.
* Then we just issue the command to the CP. Note that we can't wait around
* for the CP to process the command, so we return success for now and abort
* the connection if the command later fails.
*
* Called at splimp.
*
* Arguments:
* cup pointer to device common unit
* cvp pointer to common VCC entry
*
* Returns:
* 0 open successful
* else open failed
*
*/
int
fore_openvcc(cup, cvp)
Cmn_unit *cup;
Cmn_vcc *cvp;
{
Fore_unit *fup = (Fore_unit *)cup;
Fore_vcc *fvp = (Fore_vcc *)cvp;
H_cmd_queue *hcp;
Cmd_queue *cqp;
struct vccb *vcp;
vcp = fvp->fv_connvc->cvc_vcc;
ATM_DEBUG4("fore_openvcc: fup=%p, fvp=%p, vcc=(%d,%d)\n",
fup, fvp, vcp->vc_vpi, vcp->vc_vci);
/*
* Validate the VPI and VCI values
*/
if ((vcp->vc_vpi > fup->fu_pif.pif_maxvpi) ||
(vcp->vc_vci > fup->fu_pif.pif_maxvci)) {
return (1);
}
/*
* Only need to tell the CP about incoming VCCs
*/
if ((vcp->vc_type & VCC_IN) == 0) {
DEVICE_LOCK((Cmn_unit *)fup);
fup->fu_open_vcc++;
fvp->fv_state = CVS_ACTIVE;
DEVICE_UNLOCK((Cmn_unit *)fup);
return (0);
}
/*
* Queue command at end of command queue
*/
hcp = fup->fu_cmd_tail;
if ((*hcp->hcq_status) & QSTAT_FREE) {
/*
* Queue entry available, so set our view of things up
*/
hcp->hcq_code = CMD_ACT_VCCIN;
hcp->hcq_arg = fvp;
fup->fu_cmd_tail = hcp->hcq_next;
fvp->fv_flags |= FVF_ACTCMD;
/*
* Now set the CP-resident queue entry - the CP will grab
* the command when the op-code is set.
*/
cqp = hcp->hcq_cpelem;
(*hcp->hcq_status) = QSTAT_PENDING;
cqp->cmdq_act.act_vccid = CP_WRITE(vcp->vc_vci);
if (fvp->fv_aal == FORE_AAL_0)
cqp->cmdq_act.act_batch = CP_WRITE(1);
cqp->cmdq_act.act_spec = CP_WRITE(
ACT_SET_SPEC(BUF_STRAT_1, fvp->fv_aal,
CMD_ACT_VCCIN | CMD_INTR_REQ));
} else {
/*
* Command queue full
*/
fup->fu_stats->st_drv.drv_cm_full++;
return (1);
}
return (0);
}
/*
* Close a VCC
*
* This function is called via the common driver code after receiving a
* stack *_TERM command. The common code has already validated most of
* the request so we just need to check a few more Fore-specific details.
* Then we just issue the command to the CP. Note that we can't wait around
* for the CP to process the command, so we return success for now and whine
* if the command later fails.
*
* Called at splimp.
*
* Arguments:
* cup pointer to device common unit
* cvp pointer to common VCC entry
*
* Returns:
* 0 close successful
* else close failed
*
*/
int
fore_closevcc(cup, cvp)
Cmn_unit *cup;
Cmn_vcc *cvp;
{
Fore_unit *fup = (Fore_unit *)cup;
Fore_vcc *fvp = (Fore_vcc *)cvp;
H_xmit_queue *hxp;
H_cmd_queue *hcp;
Cmd_queue *cqp;
struct vccb *vcp;
int i, err = 0;
vcp = fvp->fv_connvc->cvc_vcc;
ATM_DEBUG4("fore_closevcc: fup=%p, fvp=%p, vcc=(%d,%d)\n",
fup, fvp, vcp->vc_vpi, vcp->vc_vci);
DEVICE_LOCK((Cmn_unit *)fup);
/*
* Clear any references to this VCC in our transmit queue
*/
for (hxp = fup->fu_xmit_head, i = 0;
(*hxp->hxq_status != QSTAT_FREE) && (i < XMIT_QUELEN);
hxp = hxp->hxq_next, i++) {
if (hxp->hxq_vcc == fvp) {
hxp->hxq_vcc = NULL;
}
}
/*
* Clear any references to this VCC in our command queue
*/
for (hcp = fup->fu_cmd_head, i = 0;
(*hcp->hcq_status != QSTAT_FREE) && (i < CMD_QUELEN);
hcp = hcp->hcq_next, i++) {
switch (hcp->hcq_code) {
case CMD_ACT_VCCIN:
case CMD_ACT_VCCOUT:
if (hcp->hcq_arg == fvp) {
hcp->hcq_arg = NULL;
}
break;
}
}
/*
* If this VCC has been previously activated, then we need to tell
* the CP to deactivate it.
*/
if (fvp->fv_flags & FVF_ACTCMD) {
/*
* Queue command at end of command queue
*/
hcp = fup->fu_cmd_tail;
if ((*hcp->hcq_status) & QSTAT_FREE) {
/*
* Queue entry available, so set our view of things up
*/
hcp->hcq_code = CMD_DACT_VCCIN;
hcp->hcq_arg = fvp;
fup->fu_cmd_tail = hcp->hcq_next;
/*
* Now set the CP-resident queue entry - the CP will
* grab the command when the op-code is set.
*/
cqp = hcp->hcq_cpelem;
(*hcp->hcq_status) = QSTAT_PENDING;
cqp->cmdq_dact.dact_vccid = CP_WRITE(vcp->vc_vci);
cqp->cmdq_dact.dact_cmd =
CP_WRITE(CMD_DACT_VCCIN|CMD_INTR_REQ);
} else {
/*
* Command queue full
*
* If we get here, we'll be getting out-of-sync with
* the CP because we can't (for now at least) do
* anything about close errors in the common code.
* This won't be too bad, since we'll just toss any
* PDUs received from the VCC and the sigmgr's will
* always get open failures when trying to use this
* (vpi,vci)...oh, well...always gotta have that one
* last bug to fix! XXX
*/
fup->fu_stats->st_drv.drv_cm_full++;
err = 1;
}
}
/*
* Finish up...
*/
if (fvp->fv_state == CVS_ACTIVE)
fup->fu_open_vcc--;
DEVICE_UNLOCK((Cmn_unit *)fup);
return (err);
}
|