xref: /illumos-gate/usr/src/uts/common/io/ib/mgt/ibcm/ibcm_arp.c (revision 5bb86dd8f405a48942aaaab3ca1f410ed7e6db4d)
1 /*
2  * CDDL HEADER START
3  *
4  * The contents of this file are subject to the terms of the
5  * Common Development and Distribution License (the "License").
6  * You may not use this file except in compliance with the License.
7  *
8  * You can obtain a copy of the license at usr/src/OPENSOLARIS.LICENSE
9  * or http://www.opensolaris.org/os/licensing.
10  * See the License for the specific language governing permissions
11  * and limitations under the License.
12  *
13  * When distributing Covered Code, include this CDDL HEADER in each
14  * file and include the License file at usr/src/OPENSOLARIS.LICENSE.
15  * If applicable, add the following below this CDDL HEADER, with the
16  * fields enclosed by brackets "[]" replaced with your own identifying
17  * information: Portions Copyright [yyyy] [name of copyright owner]
18  *
19  * CDDL HEADER END
20  */
21 /*
22  * Copyright 2007 Sun Microsystems, Inc.  All rights reserved.
23  * Use is subject to license terms.
24  */
25 
26 #pragma ident	"%Z%%M%	%I%	%E% SMI"
27 
28 #include <sys/types.h>
29 #include <sys/ddi.h>
30 #include <sys/sunddi.h>
31 #include <sys/stropts.h>
32 #include <sys/stream.h>
33 #include <sys/strsun.h>
34 #include <sys/strsubr.h>
35 #include <sys/socket.h>
36 #include <sys/stat.h>
37 #include <net/if_arp.h>
38 #include <sys/file.h>
39 #include <sys/sockio.h>
40 #include <sys/pathname.h>
41 #include <inet/arp.h>
42 #include <sys/modctl.h>
43 
44 #include <sys/ib/mgt/ibcm/ibcm_arp.h>
45 
46 #include <sys/kstr.h>
47 #include <sys/tiuser.h>
48 #include <sys/t_kuser.h>
49 
50 extern char cmlog[];
51 
52 extern int ibcm_arp_pr_lookup(ibcm_arp_streams_t *ib_s, ibt_ip_addr_t *dst_addr,
53     ibt_ip_addr_t *src_addr, uint8_t localroute, uint32_t bound_dev_if,
54     ibcm_arp_pr_comp_func_t func);
55 extern void ibcm_arp_pr_arp_ack(mblk_t *mp);
56 extern void ibcm_arp_prwqn_delete(ibcm_arp_prwqn_t *wqnp);
57 
58 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", datab))
59 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", ibt_ip_addr_s))
60 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", ibcm_arp_ip_t))
61 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", ibcm_arp_ibd_insts_t))
62 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", ibcm_arp_prwqn_t))
63 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", iocblk))
64 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", msgb))
65 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", queue))
66 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", sockaddr_in))
67 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", sockaddr_in6))
68 
69 /*
70  * ibcm_arp_get_ibaddr_cb
71  */
72 static int
73 ibcm_arp_get_ibaddr_cb(void *arg, int status)
74 {
75 	ibcm_arp_prwqn_t	*wqnp = (ibcm_arp_prwqn_t *)arg;
76 	ibcm_arp_streams_t	*ib_s = (ibcm_arp_streams_t *)wqnp->arg;
77 
78 	IBTF_DPRINTF_L4(cmlog, "ibcm_arp_get_ibaddr_cb(ib_s: %p wqnp: %p)",
79 	    ib_s, wqnp);
80 
81 	mutex_enter(&ib_s->lock);
82 	ib_s->status = status;
83 	ib_s->done = B_TRUE;
84 
85 	IBTF_DPRINTF_L3(cmlog, "ibcm_arp_get_ibaddr_cb: SGID %llX:%llX "
86 	    "DGID: %llX:%llX", wqnp->sgid.gid_prefix, wqnp->sgid.gid_guid,
87 	    wqnp->dgid.gid_prefix, wqnp->dgid.gid_guid);
88 
89 	/* lock is held by the caller. */
90 	cv_signal(&ib_s->cv);
91 	mutex_exit(&ib_s->lock);
92 	return (0);
93 }
94 
95 /*
96  * Lower read service procedure (messages coming back from arp/ip).
97  * Process messages based on queue type.
98  */
99 static int
100 ibcm_arp_lrsrv(queue_t *q)
101 {
102 	mblk_t *mp;
103 	ibcm_arp_streams_t *ib_s = q->q_ptr;
104 
105 	IBTF_DPRINTF_L4(cmlog, "ibcm_arp_lrsrv(%p, ibd_s: 0x%p)", q, ib_s);
106 
107 	if (WR(q) == ib_s->arpqueue) {
108 		while (mp = getq(q)) {
109 			ibcm_arp_pr_arp_ack(mp);
110 		}
111 	} else {
112 		freemsg(mp);
113 	}
114 
115 	return (0);
116 }
117 
118 /*
119  * Lower write service procedure.
120  * Used when lower streams are flow controlled.
121  */
122 static int
123 ibcm_arp_lwsrv(queue_t *q)
124 {
125 	mblk_t *mp;
126 
127 	IBTF_DPRINTF_L4(cmlog, "ibcm_arp_lwsrv(%p)", q);
128 
129 	while (mp = getq(q)) {
130 		if (canputnext(q)) {
131 			putnext(q, mp);
132 		} else {
133 			(void) putbq(q, mp);
134 			qenable(q);
135 			break;
136 		}
137 	}
138 
139 	return (0);
140 }
141 
142 /*
143  * Lower read put procedure. Arp/ip messages come here.
144  */
145 static int
146 ibcm_arp_lrput(queue_t *q, mblk_t *mp)
147 {
148 	IBTF_DPRINTF_L4(cmlog, "ibcm_arp_lrput(0x%p, db_type: %d)",
149 	    q, DB_TYPE(mp));
150 
151 	switch (DB_TYPE(mp)) {
152 		case M_FLUSH:
153 			/*
154 			 * Turn around
155 			 */
156 			if (*mp->b_rptr & FLUSHW) {
157 				*mp->b_rptr &= ~FLUSHR;
158 				qreply(q, mp);
159 				return (0);
160 			}
161 			freemsg(mp);
162 			break;
163 		case M_IOCACK:
164 		case M_IOCNAK:
165 		case M_DATA:
166 			/*
167 			 * This could be in interrupt context.
168 			 * Some of the ibt calls cannot be called in
169 			 * interrupt context, so
170 			 * put it in the queue and the message will be
171 			 * processed by service proccedure
172 			 */
173 			(void) putq(q, mp);
174 			qenable(q);
175 			break;
176 		default:
177 			IBTF_DPRINTF_L2(cmlog, "ibcm_arp_lrput: "
178 			    "got unknown msg <0x%x>\n", mp->b_datap->db_type);
179 			ASSERT(0);
180 			break;
181 	}
182 
183 	return (0);
184 }
185 
186 /*
187  * Streams write queue module info
188  */
189 static struct module_info ibcm_arp_winfo = {
190 	0,		/* module ID number */
191 	"ibcm",		/* module name */
192 	0,		/* min packet size */
193 	INFPSZ,
194 	49152,		/* STREAM queue high water mark -- 49152 */
195 	12		/* STREAM queue low water mark -- 12 */
196 };
197 
198 /*
199  * Streams lower write queue, for ibcm/ip requests.
200  */
201 static struct qinit ibcm_arp_lwinit = {
202 	NULL,		/* qi_putp */
203 	ibcm_arp_lwsrv,	/* qi_srvp */
204 	NULL,		/* qi_qopen */
205 	NULL,		/* qi_qclose */
206 	NULL,		/* qi_qadmin */
207 	&ibcm_arp_winfo,	/* module info */
208 	NULL,		/* module statistics struct */
209 	NULL,
210 	NULL,
211 	STRUIOT_NONE	/* stream uio type is standard uiomove() */
212 };
213 
214 /*
215  * Streams lower read queue: read reply messages from ibcm/ip.
216  */
217 static struct qinit ibcm_arp_lrinit = {
218 	ibcm_arp_lrput,	/* qi_putp */
219 	ibcm_arp_lrsrv,	/* qi_srvp */
220 	NULL,		/* qi_qopen */
221 	NULL,		/* qi_qclose */
222 	NULL,		/* qi_qadmin */
223 	&ibcm_arp_winfo,	/* module info */
224 	NULL,		/* module statistics struct */
225 	NULL,
226 	NULL,
227 	STRUIOT_NONE /* stream uio type is standard uiomove() */
228 };
229 
230 
231 static int
232 ibcm_arp_link_driver(ibcm_arp_streams_t *ib_s, char *path, queue_t **q,
233     vnode_t **dev_vp)
234 {
235 	struct stdata *dev_stp;
236 	vnode_t *vp;
237 	int error;
238 	queue_t *rq;
239 
240 	IBTF_DPRINTF_L4(cmlog, "ibcm_arp_link_driver: Enter: %s", path);
241 
242 	/* open the driver from inside the kernel */
243 	error = vn_open(path, UIO_SYSSPACE, FREAD|FWRITE, 0, &vp,
244 	    0, NULL);
245 	if (error) {
246 		IBTF_DPRINTF_L2(cmlog, "ibcm_arp_link_driver: "
247 		    "vn_open('%s') failed\n", path);
248 		return (error);
249 	}
250 	*dev_vp = vp;
251 
252 	dev_stp = vp->v_stream;
253 	*q = dev_stp->sd_wrq;
254 
255 	VN_HOLD(vp);
256 
257 	rq = RD(dev_stp->sd_wrq);
258 	RD(rq)->q_ptr = WR(rq)->q_ptr = ib_s;
259 	setq(rq, &ibcm_arp_lrinit, &ibcm_arp_lwinit, NULL, QMTSAFE,
260 	    SQ_CI|SQ_CO, B_FALSE);
261 
262 	return (0);
263 }
264 
265 extern struct qinit strdata;
266 extern struct qinit stwdata;
267 
268 /*
269  * Unlink ip, ibcm, icmp6 drivers
270  */
271 /* ARGSUSED */
272 static int
273 ibcm_arp_unlink_driver(queue_t **q, vnode_t **dev_vp)
274 {
275 	vnode_t *vp = *dev_vp;
276 	struct stdata *dev_stp = vp->v_stream;
277 	queue_t *wrq, *rq;
278 	int	rc;
279 
280 	IBTF_DPRINTF_L4(cmlog, "ibcm_arp_unlink_driver: Enter: 0x%p", q);
281 
282 	wrq = dev_stp->sd_wrq;
283 	rq = RD(wrq);
284 
285 	disable_svc(rq);
286 	wait_svc(rq);
287 	flushq(rq, FLUSHALL);
288 	flushq(WR(rq), FLUSHALL);
289 
290 	rq->q_ptr = wrq->q_ptr = dev_stp;
291 
292 	setq(rq, &strdata, &stwdata, NULL, QMTSAFE, SQ_CI|SQ_CO, B_TRUE);
293 
294 	if ((rc = VOP_CLOSE(vp, FREAD, 1, (offset_t)0, CRED(), NULL)) != 0) {
295 		IBTF_DPRINTF_L2(cmlog, "ibcm_arp_unlink_driver: VOP_CLOSE "
296 		    "failed %d\n", rc);
297 	}
298 	vn_rele(vp);
299 
300 	return (0);
301 }
302 
303 static int
304 ibcm_arp_unlink_drivers(ibcm_arp_streams_t *ib_s)
305 {
306 	IBTF_DPRINTF_L4(cmlog, "ibcm_arp_unlink_drivers(%p)", ib_s);
307 
308 	if (ib_s->arpqueue) {
309 		(void) ibcm_arp_unlink_driver(&ib_s->arpqueue, &ib_s->arp_vp);
310 	}
311 
312 	return (0);
313 }
314 
315 /*
316  * Link ip, ibtl drivers below ibtl
317  */
318 static int
319 ibcm_arp_link_drivers(ibcm_arp_streams_t *ib_s)
320 {
321 	int	rc;
322 
323 	IBTF_DPRINTF_L4(cmlog, "ibcm_arp_link_drivers(%p)", ib_s);
324 
325 	if ((rc = ibcm_arp_link_driver(ib_s, "/dev/arp", &ib_s->arpqueue,
326 	    &ib_s->arp_vp)) != 0) {
327 		IBTF_DPRINTF_L2(cmlog, "ibcm_arp_link_drivers: "
328 		    "ibcm_arp_link_driver failed: %d\n", rc);
329 		return (rc);
330 	}
331 
332 	return (0);
333 }
334 
335 ibt_status_t
336 ibcm_arp_get_ibaddr(ipaddr_t srcip, ipaddr_t destip, ib_gid_t *sgid,
337     ib_gid_t *dgid)
338 {
339 	ibcm_arp_streams_t	*ib_s;
340 	ibt_ip_addr_t		srcaddr, destaddr;
341 	int			ret = 0;
342 
343 	IBTF_DPRINTF_L4(cmlog, "ibcm_arp_get_ibaddr(%lX, %lX, %p, %p)",
344 	    htonl(srcip), htonl(destip), sgid, dgid);
345 
346 	ib_s = (ibcm_arp_streams_t *)kmem_zalloc(sizeof (ibcm_arp_streams_t),
347 	    KM_SLEEP);
348 
349 	mutex_init(&ib_s->lock, NULL, MUTEX_DEFAULT, NULL);
350 	cv_init(&ib_s->cv, NULL, CV_DRIVER, NULL);
351 
352 	ret = ibcm_arp_link_drivers(ib_s);
353 	if (ret != 0) {
354 		IBTF_DPRINTF_L3(cmlog, "ibcm_arp_get_ibaddr: "
355 		    "ibcm_arp_link_drivers failed %d", ret);
356 		goto arp_ibaddr_error;
357 	}
358 
359 	bzero(&destaddr, sizeof (ibt_ip_addr_t));
360 	bzero(&srcaddr, sizeof (ibt_ip_addr_t));
361 
362 	mutex_enter(&ib_s->lock);
363 	ib_s->done = B_FALSE;
364 	mutex_exit(&ib_s->lock);
365 
366 	destaddr.family = AF_INET_OFFLOAD;
367 	destaddr.un.ip4addr = htonl(destip);
368 	srcaddr.family = AF_INET_OFFLOAD;
369 	srcaddr.un.ip4addr = htonl(srcip);
370 
371 	IBTF_DPRINTF_L3(cmlog, "ibcm_arp_get_ibaddr: SrcIP %lX, DstIP %lX",
372 	    srcaddr.un.ip4addr, destaddr.un.ip4addr);
373 	ret = ibcm_arp_pr_lookup(ib_s, &destaddr, &srcaddr, 0, NULL,
374 	    ibcm_arp_get_ibaddr_cb);
375 
376 	IBTF_DPRINTF_L3(cmlog, "ibcm_arp_get_ibaddr: ibcm_arp_pr_lookup "
377 	    "returned: %d", ret);
378 	if (ret == 0) {
379 		mutex_enter(&ib_s->lock);
380 		while (ib_s->done != B_TRUE)
381 			cv_wait(&ib_s->cv, &ib_s->lock);
382 		mutex_exit(&ib_s->lock);
383 	}
384 
385 	(void) ibcm_arp_unlink_drivers(ib_s);
386 	mutex_enter(&ib_s->lock);
387 	ret = ib_s->status;
388 	if (ret == 0) {
389 		ibcm_arp_prwqn_t *wqnp = ib_s->wqnp;
390 		if (sgid)
391 			*sgid = ib_s->wqnp->sgid;
392 		if (dgid)
393 			*dgid = ib_s->wqnp->dgid;
394 
395 		IBTF_DPRINTF_L4(cmlog, "ibcm_arp_get_ibaddr: SGID: %llX:%llX"
396 		    " DGID: %llX:%llX",
397 		    ib_s->wqnp->sgid.gid_prefix, ib_s->wqnp->sgid.gid_guid,
398 		    ib_s->wqnp->dgid.gid_prefix, ib_s->wqnp->dgid.gid_guid);
399 
400 		mutex_exit(&ib_s->lock);
401 		ibcm_arp_prwqn_delete(wqnp);
402 		mutex_enter(&ib_s->lock);
403 	}
404 	mutex_exit(&ib_s->lock);
405 
406 arp_ibaddr_error:
407 
408 	mutex_destroy(&ib_s->lock);
409 	cv_destroy(&ib_s->cv);
410 	kmem_free(ib_s, sizeof (ibcm_arp_streams_t));
411 
412 	if (ret)
413 		return (IBT_FAILURE);
414 	else
415 		return (IBT_SUCCESS);
416 }
417 
418 
419 /*
420  * Routine to get list of "local" IP-ADDR to GID/P_KEY mapping information.
421  * Optionally, if "gid" and/or "p_key" info are specified, then retrieve the
422  * IP-ADDR info for that attribute only.
423  */
424 
425 static ibcm_arp_ip_t *
426 ibcm_arp_ibd_gid2mac(ib_gid_t *gid, ib_pkey_t pkey, ibcm_arp_ibd_insts_t *ibdp)
427 {
428 	ibcm_arp_ip_t		*ipp;
429 	int			i;
430 
431 	for (i = 0, ipp = ibdp->ibcm_arp_ip; i < ibdp->ibcm_arp_ibd_cnt;
432 	    i++, ipp++) {
433 		if ((ipp->ip_port_gid.gid_prefix == gid->gid_prefix) &&
434 		    (ipp->ip_port_gid.gid_guid == gid->gid_guid)) {
435 			if (pkey) {
436 				if (ipp->ip_pkey == pkey)
437 					return (ipp);
438 				else
439 					continue;
440 			}
441 			return (ipp);
442 		}
443 	}
444 	return (NULL);
445 }
446 
447 static ibt_status_t
448 ibcm_arp_ibd_mac2gid(ibcm_arp_ibd_insts_t *ibdp, ipaddr_t srcip,
449     ib_gid_t *sgid)
450 {
451 	ibcm_arp_ip_t		*ipp;
452 	int			i;
453 
454 	for (i = 0, ipp = ibdp->ibcm_arp_ip; i < ibdp->ibcm_arp_ibd_cnt;
455 	    i++, ipp++) {
456 
457 		IBTF_DPRINTF_L4(cmlog, "ibcm_arp_ibd_mac2gid: Is %lX == %lX "
458 		    "GID %llX:%llX", srcip, ipp->ip_cm_sin.sin_addr,
459 		    ipp->ip_port_gid.gid_prefix, ipp->ip_port_gid.gid_guid);
460 
461 		if (bcmp(&srcip, &ipp->ip_cm_sin.sin_addr, sizeof (in_addr_t))
462 		    == 0) {
463 			*sgid = ipp->ip_port_gid;
464 
465 			IBTF_DPRINTF_L4(cmlog, "ibcm_arp_ibd_mac2gid: Found "
466 			    "GID %llX:%llX", sgid->gid_prefix, sgid->gid_guid);
467 			return (IBT_SUCCESS);
468 		}
469 	}
470 	IBTF_DPRINTF_L3(cmlog, "ibcm_arp_ibd_mac2gid: Matching SRC info "
471 	    "NOT Found");
472 	return (IBT_SRC_IP_NOT_FOUND);
473 }
474 
475 static int
476 ibcm_arp_get_ibd_insts_cb(dev_info_t *dip, void *arg)
477 {
478 	ibcm_arp_ibd_insts_t *ibds = (ibcm_arp_ibd_insts_t *)arg;
479 	ibcm_arp_ip_t	*ipp;
480 	ib_pkey_t	pkey;
481 	uint8_t		port;
482 	ib_guid_t	hca_guid;
483 	ib_gid_t	port_gid;
484 
485 	if (i_ddi_devi_attached(dip) &&
486 	    (strcmp(ddi_node_name(dip), "ibport") == 0) &&
487 	    (strstr(ddi_get_name_addr(dip), "ipib") != NULL)) {
488 
489 		if (ibds->ibcm_arp_ibd_cnt >= ibds->ibcm_arp_ibd_alloc) {
490 			ibcm_arp_ip_t	*tmp = NULL;
491 			int		new_count = 0;
492 
493 			new_count = ibds->ibcm_arp_ibd_alloc +
494 			    IBCM_ARP_IBD_INSTANCES;
495 
496 			tmp = (ibcm_arp_ip_t *)kmem_zalloc(
497 			    new_count * sizeof (ibcm_arp_ip_t), KM_SLEEP);
498 			bcopy(ibds->ibcm_arp_ip, tmp,
499 			    ibds->ibcm_arp_ibd_alloc * sizeof (ibcm_arp_ip_t));
500 			kmem_free(ibds->ibcm_arp_ip,
501 			    ibds->ibcm_arp_ibd_alloc * sizeof (ibcm_arp_ip_t));
502 			ibds->ibcm_arp_ibd_alloc = new_count;
503 			ibds->ibcm_arp_ip = tmp;
504 		}
505 
506 		if (((hca_guid = ddi_prop_get_int64(DDI_DEV_T_ANY, dip, 0,
507 		    "hca-guid", 0)) == 0) ||
508 		    ((port = ddi_prop_get_int(DDI_DEV_T_ANY, dip, 0,
509 		    "port-number", 0)) == 0) ||
510 		    (ibt_get_port_state_byguid(hca_guid, port, &port_gid,
511 		    NULL) != IBT_SUCCESS) ||
512 		    ((pkey = ddi_prop_get_int(DDI_DEV_T_ANY, dip, 0,
513 		    "port-pkey", IB_PKEY_INVALID_LIMITED)) <=
514 		    IB_PKEY_INVALID_FULL)) {
515 			return (DDI_WALK_CONTINUE);
516 		}
517 
518 		ipp = &ibds->ibcm_arp_ip[ibds->ibcm_arp_ibd_cnt];
519 		ipp->ip_inst = ddi_get_instance(dip);
520 		ipp->ip_pkey = pkey;
521 		ipp->ip_hca_guid = hca_guid;
522 		ipp->ip_port_gid = port_gid;
523 		ibds->ibcm_arp_ibd_cnt++;
524 	}
525 	return (DDI_WALK_CONTINUE);
526 }
527 
528 static void
529 ibcm_arp_get_ibd_insts(ibcm_arp_ibd_insts_t *ibds)
530 {
531 	ddi_walk_devs(ddi_root_node(), ibcm_arp_get_ibd_insts_cb, ibds);
532 }
533 
534 /*
535  * Return ibd interfaces and ibd instances.
536  */
537 static int
538 ibcm_arp_get_ibd_ipaddr(ibcm_arp_ibd_insts_t *ibds)
539 {
540 	TIUSER			*tiptr;
541 	vnode_t			*kvp;
542 	vnode_t			*vp = NULL;
543 	struct strioctl		iocb;
544 	struct lifreq		lif_req;
545 	int			k, ip_cnt;
546 	ibcm_arp_ip_t		*ipp;
547 
548 	if (lookupname("/dev/udp", UIO_SYSSPACE, FOLLOW, NULLVPP, &kvp) == 0) {
549 		if (t_kopen((file_t *)NULL, kvp->v_rdev, FREAD|FWRITE,
550 		    &tiptr, CRED()) == 0) {
551 			vp = tiptr->fp->f_vnode;
552 		} else {
553 			VN_RELE(kvp);
554 		}
555 	}
556 
557 	if (vp == NULL)
558 		return (-1);
559 
560 	/* Get ibd ip's */
561 	ip_cnt = 0;
562 	for (k = 0, ipp = ibds->ibcm_arp_ip; k < ibds->ibcm_arp_ibd_cnt;
563 	    k++, ipp++) {
564 
565 		(void) bzero((void *)&lif_req, sizeof (struct lifreq));
566 		(void) snprintf(lif_req.lifr_name, sizeof (lif_req.lifr_name),
567 		    "%s%d", IBCM_ARP_IBD_NAME, ipp->ip_inst);
568 
569 		(void) bzero((void *)&iocb, sizeof (struct strioctl));
570 		iocb.ic_cmd = SIOCGLIFADDR;
571 		iocb.ic_timout = 0;
572 		iocb.ic_len = sizeof (struct lifreq);
573 		iocb.ic_dp = (caddr_t)&lif_req;
574 
575 		if (kstr_ioctl(vp, I_STR, (intptr_t)&iocb) == 0) {
576 			ipp->ip_inet_family = AF_INET;
577 			bcopy(&lif_req.lifr_addr, &ipp->ip_cm_sin,
578 			    sizeof (struct sockaddr_in));
579 			ip_cnt++;
580 			continue;
581 		}
582 	}
583 
584 	(void) t_kclose(tiptr, 0);
585 	VN_RELE(kvp);
586 
587 	if (ip_cnt == 0)
588 		return (-1);
589 	else
590 		return (0);
591 }
592 
593 ibt_status_t
594 ibcm_arp_get_ibds(ibcm_arp_ibd_insts_t *ibdp)
595 {
596 	IBTF_DPRINTF_L4(cmlog, "ibcm_arp_get_ibds(%p)", ibdp);
597 
598 	ibcm_arp_get_ibd_insts(ibdp);
599 
600 	IBTF_DPRINTF_L3(cmlog, "ibcm_arp_get_ibds: Found %d ibd instances",
601 	    ibdp->ibcm_arp_ibd_cnt);
602 
603 	if (ibdp->ibcm_arp_ibd_cnt == 0)
604 		return (IBT_SRC_IP_NOT_FOUND);
605 
606 	/* Get the IP addresses of active ports. */
607 	if (ibcm_arp_get_ibd_ipaddr(ibdp) != 0) {
608 		IBTF_DPRINTF_L2(cmlog, "ibcm_arp_get_ibds: failed to get "
609 		    "ibd instance: IBT_SRC_IP_NOT_FOUND");
610 		return (IBT_SRC_IP_NOT_FOUND);
611 	}
612 
613 	return (IBT_SUCCESS);
614 }
615 
616 _NOTE(SCHEME_PROTECTS_DATA("Unshared data", ibtl_cm_port_list_t))
617 
618 ibt_status_t
619 ibcm_arp_get_srcip_plist(ibt_ip_path_attr_t *ipattr, ibt_path_flags_t flags,
620     ibtl_cm_port_list_t **port_list_p)
621 {
622 	ibt_path_attr_t		attr;
623 	ibt_status_t		ret;
624 	ibcm_arp_ibd_insts_t	ibds;
625 	ibcm_arp_ip_t		*ipp;
626 	ibtl_cm_port_list_t	*plistp;
627 	ib_gid_t		sgid;
628 
629 	IBTF_DPRINTF_L4(cmlog, "ibcm_arp_get_srcip_plist(%p, %llX)",
630 	    ipattr, flags);
631 
632 	sgid.gid_prefix = sgid.gid_guid = 0;
633 	bzero(&ibds, sizeof (ibcm_arp_ibd_insts_t));
634 	ibds.ibcm_arp_ibd_alloc = IBCM_ARP_IBD_INSTANCES;
635 	ibds.ibcm_arp_ibd_cnt = 0;
636 	ibds.ibcm_arp_ip = (ibcm_arp_ip_t *)kmem_zalloc(
637 	    ibds.ibcm_arp_ibd_alloc * sizeof (ibcm_arp_ip_t), KM_SLEEP);
638 
639 	ret = ibcm_arp_get_ibds(&ibds);
640 	if (ret != IBT_SUCCESS) {
641 		IBTF_DPRINTF_L2(cmlog, "ibcm_arp_get_srcip_plist: "
642 		    "ibcm_arp_get_ibds failed : 0x%x", ret);
643 		goto srcip_plist_end;
644 	}
645 
646 	if (ipattr->ipa_src_ip.family != AF_UNSPEC) {
647 		ret = ibcm_arp_ibd_mac2gid(&ibds,
648 		    htonl(ipattr->ipa_src_ip.un.ip4addr), &sgid);
649 		if (ret != IBT_SUCCESS) {
650 			IBTF_DPRINTF_L2(cmlog, "ibcm_arp_get_srcip_plist: "
651 			    "SGID for the specified SRCIP Not found %X", ret);
652 			goto srcip_plist_end;
653 		}
654 		IBTF_DPRINTF_L4(cmlog, "ibcm_arp_get_srcip_plist: SGID "
655 		    "%llX:%llX", sgid.gid_prefix, sgid.gid_guid);
656 	}
657 
658 	bzero(&attr, sizeof (ibt_path_attr_t));
659 	attr.pa_hca_guid = ipattr->ipa_hca_guid;
660 	attr.pa_hca_port_num = ipattr->ipa_hca_port_num;
661 	attr.pa_sgid = sgid;
662 	bcopy(&ipattr->ipa_mtu,  &attr.pa_mtu, sizeof (ibt_mtu_req_t));
663 	bcopy(&ipattr->ipa_srate,  &attr.pa_srate, sizeof (ibt_srate_req_t));
664 	bcopy(&ipattr->ipa_pkt_lt,  &attr.pa_pkt_lt, sizeof (ibt_pkt_lt_req_t));
665 
666 	ret = ibtl_cm_get_active_plist(&attr, flags, port_list_p);
667 	if (ret == IBT_SUCCESS) {
668 		int		i;
669 
670 		plistp = port_list_p[0];
671 		for (i = 0; i < plistp->p_count; i++, plistp++) {
672 			ipp = ibcm_arp_ibd_gid2mac(&plistp->p_sgid, 0, &ibds);
673 			if (ipp == NULL)
674 				plistp->p_src_ip.family = AF_UNSPEC;
675 			else {
676 				IBTF_DPRINTF_L4(cmlog,
677 				    "ibcm_arp_get_srcip_plist: GID %llX:%llX",
678 				    plistp->p_sgid.gid_prefix,
679 				    plistp->p_sgid.gid_guid);
680 				if (ipp->ip_inet_family == AF_INET) {
681 					plistp->p_src_ip.family = AF_INET;
682 					bcopy(&ipp->ip_cm_sin.sin_addr,
683 					    &plistp->p_src_ip.un.ip4addr,
684 					    sizeof (in_addr_t));
685 
686 					IBTF_DPRINTF_L4(cmlog,
687 					    "ibcm_arp_get_srcip_plist: SrcIP: "
688 					    "%lX", plistp->p_src_ip.un.ip4addr);
689 				} else if (ipp->ip_inet_family == AF_INET6) {
690 					plistp->p_src_ip.family = AF_INET6;
691 					bcopy(&ipp->ip_cm_sin6.sin6_addr,
692 					    &plistp->p_src_ip.un.ip6addr,
693 					    sizeof (in6_addr_t));
694 				}
695 			}
696 		}
697 	}
698 
699 srcip_plist_end:
700 	if (ibds.ibcm_arp_ip)
701 		kmem_free(ibds.ibcm_arp_ip, ibds.ibcm_arp_ibd_alloc *
702 		    sizeof (ibcm_arp_ip_t));
703 
704 	return (ret);
705 }
706 /* Routines for warlock */
707 
708 /* ARGSUSED */
709 static int
710 ibcm_arp_dummy_ibaddr_hdl(void *arg, int status)
711 {
712 	ibcm_arp_prwqn_t		dummy_wqn1;
713 	ibcm_arp_prwqn_t		dummy_wqn2;
714 
715 	dummy_wqn1.func = ibcm_arp_get_ibaddr_cb;
716 	dummy_wqn2.func = ibcm_arp_dummy_ibaddr_hdl;
717 
718 	IBTF_DPRINTF_L5(cmlog, "ibcm_arp_dummy_ibaddr_hdl: "
719 	    "dummy_wqn1.func %p %p", dummy_wqn1.func, dummy_wqn2.func);
720 
721 	return (0);
722 }
723