summaryrefslogtreecommitdiffstats
path: root/sys/netatm/ipatm/ipatm_usrreq.c
blob: 9fcc20c48a7a1d4a1d6c9b2b1f7c8409dff71aff (plain)
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
347
348
349
350
351
352
353
354
355
356
357
358
359
360
361
362
363
364
365
366
367
368
369
370
371
372
373
374
375
376
377
378
379
380
381
382
383
384
385
386
387
388
389
390
391
392
393
394
395
396
397
398
399
400
401
402
403
404
405
406
407
408
409
410
411
412
413
414
415
416
417
418
419
420
421
422
423
424
425
426
427
428
429
430
431
432
433
434
435
436
437
438
439
440
441
442
443
444
445
446
447
448
449
450
451
452
453
454
455
456
457
458
459
460
461
462
463
464
465
466
467
468
469
470
471
472
473
474
475
476
477
478
479
480
481
482
483
484
485
486
487
488
489
490
491
492
493
494
495
496
497
498
499
500
501
502
503
504
505
506
507
/*-
 * ===================================
 * 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.
 */

/*
 * IP Over ATM Support
 * -------------------
 *
 * Process user requests
 */

#include <sys/cdefs.h>
__FBSDID("$FreeBSD$");

#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 <netinet/in.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_ioctl.h>
#include <netatm/atm_stack.h>
#include <netatm/atm_pcb.h>
#include <netatm/atm_var.h>

#include <netatm/ipatm/ipatm_var.h>
#include <netatm/ipatm/ipatm_serv.h>

/*
 * Process IP PF_ATM ioctls
 * 
 * Called at splnet.
 *
 * Arguments:
 *	code	PF_ATM sub-operation code
 *	data	pointer to code specific parameter data area
 *	arg1	pointer to code specific argument
 *
 * Returns:
 *	0 	request procesed
 *	errno	error processing request - reason indicated
 *
 */
int
ipatm_ioctl(code, data, arg1)
	int		code;
	caddr_t		data;
	caddr_t		arg1;
{
	struct atmaddreq	*aap;
	struct atmdelreq	*adp;
	struct atminfreq	*aip;
	struct air_ip_vcc_rsp	aivr;
	struct atm_nif	*nip;
	struct ip_nif	*inp;
	struct ipvcc	*ivp;
	struct vccb	*vcp;
	struct ipatmpvc	pv;
	caddr_t		cp;
	struct in_addr	ip;
	int err = 0;
	size_t space;
	struct t_atm_traffic *traf;


	switch (code) {

	case AIOCS_ADD_PVC:
		/*
		 * Add an IP PVC
		 */
		aap = (struct atmaddreq *)data;

		/*
		 * Find the IP network interface
		 */
		if ((nip = atm_nifname(aap->aar_pvc_intf)) == NULL) {
			err = ENXIO;
			break;
		}

		for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
			if (inp->inf_nif == nip)
				break;
		}
		if (inp == NULL) {
			err = ENXIO;
			break;
		}

		/*
		 * Validate PVC params
		 */
		if (aap->aar_pvc_aal == ATM_AAL5) {
			if ((aap->aar_pvc_encaps != ATM_ENC_LLC) &&
			    (aap->aar_pvc_encaps != ATM_ENC_NULL)) {
				err = EINVAL;
				break;
			}
		} else if (aap->aar_pvc_aal == ATM_AAL3_4) {
			if (aap->aar_pvc_encaps != ATM_ENC_NULL) {
				err = EINVAL;
				break;
			}
		} else {
			err = EINVAL;
			break;
		}

		if (aap->aar_pvc_flags & PVC_DYN) {
			/*
			 * For dynamic PVC destination addressing, the
			 * network interface must have support for this
			 */
			if ((inp->inf_serv == NULL) ||
			    (inp->inf_serv->is_arp_pvcopen == NULL)) {
				err = EDESTADDRREQ;
				break;
			}
		} else {
			u_long	dst = ((struct sockaddr_in *)&aap->aar_pvc_dst)
						->sin_addr.s_addr;

			if (dst == INADDR_ANY) {
				err = EINVAL;
				break;
			}
		}

		/*
		 * Validate PVC traffic
		 */
#define MAXVAL(bits)	((1 << bits) - 1)
#define MAXMASK(bits)	(~MAXVAL(bits))
		traf = &aap->aar_pvc_traffic;
		switch (aap->aar_pvc_traffic_type) {

		  case T_ATM_CBR:
		  case T_ATM_UBR:
			/*
			 * PCR is a value between 0 to the PIF's PCR
			 */
			if (traf->forward.PCR_high_priority == T_ATM_ABSENT ||
			    (traf->forward.PCR_high_priority & MAXMASK(24))) {
				err = EINVAL;
				break;
			}
			if (traf->forward.PCR_all_traffic == T_ATM_ABSENT ||
			    (traf->forward.PCR_all_traffic & MAXMASK(24))) {
				err = EINVAL;
				break;
			}

			if (traf->backward.PCR_high_priority == T_ATM_ABSENT ||
			    (traf->backward.PCR_high_priority & MAXMASK(24))) {
				err = EINVAL;
				break;
			}
			if (traf->backward.PCR_all_traffic == T_ATM_ABSENT  ||
			    (traf->backward.PCR_all_traffic & MAXMASK(24))) {
				err = EINVAL;
				break;
			}
			break;

		  case T_ATM_VBR:
			/*
			 * PCR, SCR and MBS are required
			 */
			if (traf->forward.PCR_high_priority == T_ATM_ABSENT ||
			    (traf->forward.PCR_high_priority & MAXMASK(24)) ||
			    traf->forward.PCR_all_traffic == T_ATM_ABSENT ||
			    (traf->forward.PCR_all_traffic & MAXMASK(24))) {
				err = EINVAL;
				break;
			}
			if (traf->forward.SCR_high_priority == T_ATM_ABSENT ||
			    (traf->forward.SCR_high_priority & MAXMASK(24)) ||
			    traf->forward.SCR_all_traffic == T_ATM_ABSENT ||
			    (traf->forward.SCR_all_traffic & MAXMASK(24))) {
				err = EINVAL;
				break;
			}
			if (traf->forward.MBS_high_priority == T_ATM_ABSENT ||
			    (traf->forward.MBS_high_priority & MAXMASK(24)) ||
			    traf->forward.MBS_all_traffic == T_ATM_ABSENT ||
			    (traf->forward.MBS_all_traffic & MAXMASK(24))) {
				err = EINVAL;
				break;
			}

			if (traf->backward.PCR_high_priority == T_ATM_ABSENT ||
			    (traf->backward.PCR_high_priority & MAXMASK(24)) ||
			    traf->backward.PCR_all_traffic == T_ATM_ABSENT ||
			    (traf->backward.PCR_all_traffic & MAXMASK(24))) {
				err = EINVAL;
				break;
			}
			if (traf->backward.SCR_high_priority == T_ATM_ABSENT ||
			    (traf->backward.SCR_high_priority & MAXMASK(24)) ||
			    traf->backward.SCR_all_traffic == T_ATM_ABSENT ||
			    (traf->backward.SCR_all_traffic & MAXMASK(24))) {
				err = EINVAL;
				break;
			}
			if (traf->backward.MBS_high_priority == T_ATM_ABSENT ||
			    (traf->backward.MBS_high_priority & MAXMASK(24)) ||
			    traf->backward.MBS_all_traffic == T_ATM_ABSENT ||
			    (traf->backward.MBS_all_traffic & MAXMASK(24))) {
				err = EINVAL;
				break;
			}
			break;

		  case T_ATM_NULL:
			/*
			 * No PVC traffic type
			 */
			break;

		  default:
			err = EINVAL;
			break;
		}
		if (err != 0)
			break;

		/*
		 * Build connection request
		 */
		pv.ipp_ipnif = inp;
		pv.ipp_vpi = aap->aar_pvc_vpi;
		pv.ipp_vci = aap->aar_pvc_vci;
		pv.ipp_traffic_type = aap->aar_pvc_traffic_type;
		pv.ipp_traffic = aap->aar_pvc_traffic;
		pv.ipp_encaps = aap->aar_pvc_encaps;
		pv.ipp_aal = aap->aar_pvc_aal;
		if (aap->aar_pvc_flags & PVC_DYN) {
			pv.ipp_dst.sin_addr.s_addr = INADDR_ANY;
		} else
			pv.ipp_dst = *(struct sockaddr_in *)&aap->aar_pvc_dst;

		/*
		 * Open a new VCC
		 */
		err = ipatm_openpvc(&pv, &ivp);
		break;

	case AIOCS_ADD_ARP:
		/*
		 * Add an ARP mapping
		 */
		aap = (struct atmaddreq *)data;

		/*
		 * Validate IP address
		 */
		if (aap->aar_arp_dst.sa_family != AF_INET) {
			err = EAFNOSUPPORT;
			break;
		}
		ip = SATOSIN(&aap->aar_arp_dst)->sin_addr;

		if (aap->aar_arp_intf[0] == '\0') {
			/*
			 * Find the IP network interface associated with
			 * the supplied IP address
			 */
			for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
				if (ipatm_chknif(ip, inp) == 0)
					break;
			}
			if (inp == NULL) {
				err = EADDRNOTAVAIL;
				break;
			}
		} else {
			/*
			 * Find the specified IP network interface
			 */
			if ((nip = atm_nifname(aap->aar_arp_intf)) == NULL) {
				err = ENXIO;
				break;
			}
			for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
				if (inp->inf_nif == nip)
					break;
			}
			if (inp == NULL) {
				err = ENXIO;
				break;
			}
		}

		if ((ip.s_addr == INADDR_ANY) ||
		    in_broadcast(ip, &inp->inf_nif->nif_if) ||
		    IN_MULTICAST(ntohl(ip.s_addr))) {
			err = EADDRNOTAVAIL;
			break;
		}

		/*
		 * Notify the responsible ARP service
		 *
		 * XXX: if there is one.  No idea how this happens, but at
		 * least don't panic on a NULL pointer if it does.
		 */
		if (inp->inf_serv == NULL) {
			err = ENXIO;
			break;
		}
		err = (*inp->inf_serv->is_ioctl)(code, data, inp->inf_isintf);
		break;

	case AIOCS_DEL_ARP:
		/*
		 * Delete an ARP mapping
		 */
		adp = (struct atmdelreq *)data;

		/*
		 * Validate IP address
		 */
		if (adp->adr_arp_dst.sa_family != AF_INET) {
			err = EAFNOSUPPORT;
			break;
		}
		ip = SATOSIN(&adp->adr_arp_dst)->sin_addr;

		if (adp->adr_arp_intf[0] == '\0') {
			/*
			 * Find the IP network interface associated with
			 * the supplied IP address
			 */
			for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
				if (ipatm_chknif(ip, inp) == 0)
					break;
			}
			if (inp == NULL) {
				err = EADDRNOTAVAIL;
				break;
			}
		} else {
			/*
			 * Find the specified IP network interface
			 */
			if ((nip = atm_nifname(adp->adr_arp_intf)) == NULL) {
				err = ENXIO;
				break;
			}
			for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
				if (inp->inf_nif == nip)
					break;
			}
			if (inp == NULL) {
				err = ENXIO;
				break;
			}
		}

		if ((ip.s_addr == INADDR_ANY) ||
		    in_broadcast(ip, &inp->inf_nif->nif_if) ||
		    IN_MULTICAST(ntohl(ip.s_addr))) {
			err = EADDRNOTAVAIL;
			break;
		}

		/*
		 * Notify the responsible ARP service
		 */
		err = (*inp->inf_serv->is_ioctl)(code, data, inp->inf_isintf);
		break;

	case AIOCS_INF_IPM:
		/*
		 * Get IP VCC information
		 */
		aip = (struct atminfreq *)data;

		if (aip->air_ip_addr.sa_family != AF_INET)
			break;
		ip = SATOSIN(&aip->air_ip_addr)->sin_addr;

		cp = aip->air_buf_addr;
		space = aip->air_buf_len;

		/*
		 * Loop through all our interfaces
		 */
		for (inp = ipatm_nif_head; inp; inp = inp->inf_next) {
			/*
			 * Check out each VCC
			 */
			for (ivp = Q_HEAD(inp->inf_vcq, struct ipvcc); ivp;
				    ivp = Q_NEXT(ivp, struct ipvcc, iv_elem)) {

				if ((ip.s_addr != INADDR_ANY) &&
				    (ip.s_addr != ivp->iv_dst.s_addr))
					continue;

				/*
				 * Make sure there's room in user buffer
				 */
				if (space < sizeof(aivr)) {
					err = ENOSPC;
					break;
				}

				/*
				 * Fill in info to be returned
				 */
				bzero((caddr_t)&aivr, sizeof(aivr));
				SATOSIN(&aivr.aip_dst_addr)->sin_family = 
					AF_INET;
				SATOSIN(&aivr.aip_dst_addr)->sin_addr.s_addr = 
					ivp->iv_dst.s_addr;
				strlcpy(aivr.aip_intf,
				    inp->inf_nif->nif_if.if_xname,
				    sizeof(aivr.aip_intf));
				if ((ivp->iv_conn) &&
				    (ivp->iv_conn->co_connvc) &&
				    (vcp = ivp->iv_conn->co_connvc->cvc_vcc)) {
					aivr.aip_vpi = vcp->vc_vpi;
					aivr.aip_vci = vcp->vc_vci;
					aivr.aip_sig_proto = vcp->vc_proto;
				} 
				aivr.aip_flags = ivp->iv_flags;
				aivr.aip_state = ivp->iv_state;

				/*
				 * Copy data to user buffer and 
				 * update buffer controls
				 */
				err = copyout((caddr_t)&aivr, cp, sizeof(aivr));
				if (err)
					break;
				cp += sizeof(aivr);
				space -= sizeof(aivr);
			}
			if (err)
				break;
		}

		/*
		 * Update buffer pointer/count
		 */
		aip->air_buf_addr = cp;
		aip->air_buf_len = space;
		break;

	default:
		err = EOPNOTSUPP;
	}

	return (err);
}


/*
 * Get Connection's Application/Owner Name
 * 
 * Arguments:
 *	tok	ipatm connection token (pointer to ipvcc)
 *
 * Returns:
 *	addr	pointer to string containing our name
 *
 */
caddr_t
ipatm_getname(tok)
	void		*tok;
{
	return ("IP");
}

OpenPOWER on IntegriCloud