xref: /illumos-gate/usr/src/uts/common/io/ib/clients/eoib/enx_fip.c (revision 6a634c9dca3093f3922e4b7ab826d7bdf17bf78e)
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 /*
23  * Copyright (c) 2010, Oracle and/or its affiliates. All rights reserved.
24  */
25 
26 #include <sys/types.h>
27 #include <sys/ddi.h>
28 #include <sys/sunddi.h>
29 #include <sys/ksynch.h>
30 #include <sys/byteorder.h>
31 
32 #include <sys/ib/clients/eoib/enx_impl.h>
33 
34 const char fip_vendor_mellanox[] = {
35 	0x4d, 0x65, 0x6c, 0x6c, 0x61, 0x6e, 0x6f, 0x78
36 };
37 
38 /*
39  * HW/FW workaround
40  *
41  * Verification of descriptor list length in the received packets is
42  * disabled, since experimentation shows that BX does not set the desc
43  * list length correctly.
44  */
45 int enx_wa_no_desc_list_len = 1;
46 
47 /*
48  * Static function declarations
49  */
50 static int eibnx_fip_make_solicit_pkt(eibnx_thr_info_t *, eibnx_wqe_t *);
51 static int eibnx_fip_send_solicit_pkt(eibnx_thr_info_t *, eibnx_wqe_t *,
52     eibnx_gw_addr_t *);
53 static int eibnx_fip_parse_advt_pkt(uint8_t *, eibnx_gw_msg_t *);
54 static void eibnx_rb_fip_make_solicit_pkt(eibnx_wqe_t *);
55 
56 /*
57  * Prepare and send a solicit multicast packet to the All-EoIB-GWs-GID
58  */
59 int
eibnx_fip_solicit_mcast(eibnx_thr_info_t * info)60 eibnx_fip_solicit_mcast(eibnx_thr_info_t *info)
61 {
62 	eibnx_wqe_t *swqe;
63 	int ret;
64 
65 	if ((swqe = eibnx_acquire_swqe(info, KM_SLEEP)) == NULL)
66 		return (ENX_E_FAILURE);
67 
68 	ret = eibnx_fip_make_solicit_pkt(info, swqe);
69 	if (ret != ENX_E_SUCCESS) {
70 		eibnx_release_swqe(swqe);
71 		return (ENX_E_FAILURE);
72 	}
73 
74 	ret = eibnx_fip_send_solicit_pkt(info, swqe, NULL);
75 	if (ret != ENX_E_SUCCESS) {
76 		eibnx_rb_fip_make_solicit_pkt(swqe);
77 		eibnx_release_swqe(swqe);
78 		return (ENX_E_FAILURE);
79 	}
80 
81 	return (ENX_E_SUCCESS);
82 }
83 
84 /*
85  * Go through the list of already discovered gateways and send
86  * a unicast solicitation to each gateway.  This is required by
87  * the EoIB specification ostensibly to receive updated
88  * advertisements.
89  */
90 int
eibnx_fip_solicit_ucast(eibnx_thr_info_t * info,clock_t * solicit_period_ticks)91 eibnx_fip_solicit_ucast(eibnx_thr_info_t *info, clock_t *solicit_period_ticks)
92 {
93 	eibnx_gw_info_t *gw;
94 	eibnx_wqe_t *swqe;
95 	clock_t min_solicit_period_msec;
96 	int ret;
97 
98 	/*
99 	 * We want to read the gwlist and send a unicast to each
100 	 * destination.  Now, the only places where the gw list pointers
101 	 * are updated are when we're adding a new gw item to the list
102 	 * and when the list is being torn down and freed.
103 	 *
104 	 * Since new GWs are always inserted at the head of the list,
105 	 * we're guaranteed that any tail subchain of the list will
106 	 * not change by the addition of a new gw item coming into
107 	 * the list.
108 	 *
109 	 * Also, since the gw list is torn down only by the port-monitor
110 	 * thread (i.e. ourselves), we are also protected against the
111 	 * list itself going away while we're here.
112 	 *
113 	 * Given these two constraints, we can safely read the list
114 	 * of gateways without the gw list lock in this routine.
115 	 */
116 	min_solicit_period_msec = drv_hztousec(*solicit_period_ticks) / 1000;
117 	for (gw = info->ti_gw; gw; gw = gw->gw_next) {
118 
119 		if (eibnx_is_gw_dead(gw))
120 			continue;
121 
122 		swqe = gw->gw_swqe;
123 		ASSERT(swqe != NULL);
124 
125 		mutex_enter(&swqe->qe_lock);
126 		if (swqe->qe_type != ENX_QETYP_SWQE) {
127 			ENX_DPRINTF_DEBUG("eibnx_fip_solicit_ucast: "
128 			    "gw wqe type (0x%lx) indicates this is not an "
129 			    "swqe!, cannot send solicitation to gw",
130 			    swqe->qe_type);
131 			mutex_exit(&swqe->qe_lock);
132 			continue;
133 		} else if ((swqe->qe_flags & ENX_QEFL_INUSE) !=
134 		    ENX_QEFL_INUSE) {
135 			ENX_DPRINTF_DEBUG("eibnx_fip_solicit_ucast: "
136 			    "gw swqe flags (0x%lx) indicate swqe is free!, "
137 			    "cannot send solicitation to gw", swqe->qe_flags);
138 			mutex_exit(&swqe->qe_lock);
139 			continue;
140 		} else if ((swqe->qe_flags & ENX_QEFL_POSTED) ==
141 		    ENX_QEFL_POSTED) {
142 			ENX_DPRINTF_DEBUG("eibnx_fip_solicit_ucast: gw swqe "
143 			    "flags (0x%lx) indicate swqe is still with HCA!, "
144 			    "cannot send solicitation to gw", swqe->qe_flags);
145 			mutex_exit(&swqe->qe_lock);
146 			continue;
147 		}
148 		mutex_exit(&swqe->qe_lock);
149 
150 		/*
151 		 * EoIB spec requires that each host send solicitation
152 		 * to discovered gateways atleast every 4 * GW_ADV_PERIOD.
153 		 * We make sure we send a solicitation to all gateways
154 		 * every 4 * GW_ADV_PERIOD of the smallest value of
155 		 * GW_ADV_PERIOD that we have in our gw list.
156 		 */
157 		if ((gw->gw_adv_period * 4) < min_solicit_period_msec)
158 			min_solicit_period_msec = gw->gw_adv_period * 4;
159 
160 		ret = eibnx_fip_make_solicit_pkt(info, swqe);
161 		if (ret != ENX_E_SUCCESS)
162 			continue;
163 
164 		ret = eibnx_fip_send_solicit_pkt(info, swqe, &gw->gw_addr);
165 		if (ret != ENX_E_SUCCESS)
166 			eibnx_rb_fip_make_solicit_pkt(swqe);
167 	}
168 
169 	*solicit_period_ticks = drv_usectohz(min_solicit_period_msec * 1000);
170 
171 	return (ENX_E_SUCCESS);
172 }
173 
174 /*
175  * Given a send wqe and an eibnx_thr_info_t pointer, fill in the
176  * send buffer with a solicit packet in the network byte order.
177  */
178 static int
eibnx_fip_make_solicit_pkt(eibnx_thr_info_t * info,eibnx_wqe_t * swqe)179 eibnx_fip_make_solicit_pkt(eibnx_thr_info_t *info, eibnx_wqe_t *swqe)
180 {
181 	fip_solicit_t *solicit;
182 	fip_proto_t *proto;
183 	fip_basic_hdr_t *hdr;
184 	fip_desc_iba_t *iba;
185 	ib_gid_t port_gid;
186 	ib_guid_t port_guid;
187 
188 	uint8_t *pkt = (uint8_t *)(uintptr_t)(swqe->qe_sgl.ds_va);
189 	uint_t pktsz = swqe->qe_sgl.ds_len;
190 	uint_t solicit_sz = sizeof (fip_solicit_t);
191 
192 	if (pktsz < solicit_sz) {
193 		ENX_DPRINTF_ERR("swqe bufsize too small for pkt, "
194 		    "pktsz=%x < expsz=%x", pktsz, solicit_sz);
195 		return (ENX_E_FAILURE);
196 	}
197 
198 	/*
199 	 * Lint complains that there may be an alignment issue here,
200 	 * but we know that the "pkt" is atleast double-word aligned,
201 	 * so it's ok.
202 	 */
203 	solicit = (fip_solicit_t *)pkt;
204 
205 	/*
206 	 * Fill in the FIP protocol version
207 	 */
208 	proto = &solicit->sl_proto_version;
209 	proto->pr_version = FIP_PROTO_VERSION;
210 
211 	/*
212 	 * Fill in the basic header
213 	 */
214 	hdr = &solicit->sl_fip_hdr;
215 	hdr->hd_opcode = htons(FIP_OPCODE_EOIB);
216 	hdr->hd_subcode = FIP_SUBCODE_H_SOLICIT;
217 	hdr->hd_desc_list_len = htons((solicit_sz >> 2) - 2);
218 	hdr->hd_flags = 0;
219 	hdr->hd_type = FIP_DESC_TYPE_VENDOR_ID;
220 	hdr->hd_len = FIP_DESC_LEN_VENDOR_ID;
221 	bcopy(fip_vendor_mellanox, hdr->hd_vendor_id, FIP_VENDOR_LEN);
222 
223 	/*
224 	 * Fill in the Infiniband Address descriptor
225 	 */
226 	iba = &solicit->sl_iba;
227 	iba->ia_type = FIP_DESC_TYPE_IBA;
228 	iba->ia_len = FIP_DESC_LEN_IBA;
229 	bcopy(fip_vendor_mellanox, iba->ia_vendor_id, FIP_VENDOR_LEN);
230 	iba->ia_qpn = htonl(info->ti_qpn);
231 	iba->ia_sl_portid = 0;
232 	iba->ia_lid = htons(info->ti_pi->p_base_lid);
233 	port_gid = info->ti_pi->p_sgid_tbl[0];
234 	port_guid = htonll(port_gid.gid_guid);
235 	bcopy(&port_guid, iba->ia_guid, FIP_GUID_LEN);
236 
237 	/*
238 	 * Adjust the ds_len in the sgl to indicate the size of the
239 	 * solicit pkt before returning
240 	 */
241 	swqe->qe_sgl.ds_len = solicit_sz;
242 
243 	return (ENX_E_SUCCESS);
244 }
245 
246 static int
eibnx_setup_ud_dest(eibnx_thr_info_t * info,eibnx_wqe_t * swqe,eibnx_gw_addr_t * gw_addr)247 eibnx_setup_ud_dest(eibnx_thr_info_t *info, eibnx_wqe_t *swqe,
248     eibnx_gw_addr_t *gw_addr)
249 {
250 	eibnx_t *ss = enx_global_ss;
251 	ibt_path_attr_t attr;
252 	ibt_path_info_t path;
253 	ibt_status_t ret;
254 
255 	/*
256 	 * If this a multicast send, we'll have the gateway address NULL,
257 	 * and we'll need to modify the UD destination to send to the
258 	 * solicit mcg.
259 	 */
260 	if (gw_addr == NULL) {
261 		ret = ibt_modify_ud_dest(swqe->qe_wr.send.wr.ud.udwr_dest,
262 		    info->ti_solicit_mcg->mc_qkey, IB_MC_QPN,
263 		    &info->ti_solicit_mcg->mc_adds_vect);
264 		if (ret != IBT_SUCCESS) {
265 			ENX_DPRINTF_ERR("ibt_modify_ud_dest() failed with "
266 			    "ret=%d, qkey=%x, qpn=%x", ret,
267 			    info->ti_solicit_mcg->mc_qkey, IB_MC_QPN);
268 			return (ENX_E_FAILURE);
269 		}
270 
271 		return (ENX_E_SUCCESS);
272 	}
273 
274 	/*
275 	 * If this is a unicast send, but we already have the gw address
276 	 * vector, the ud destination handle has already been set up for
277 	 * this gateway, so we can return.
278 	 */
279 	if (gw_addr->ga_vect)
280 		return (ENX_E_SUCCESS);
281 
282 	/*
283 	 * Get the reversible path information for this gateway
284 	 */
285 	bzero(&attr, sizeof (ibt_path_info_t));
286 	attr.pa_dgids = &gw_addr->ga_gid;
287 	attr.pa_num_dgids = 1;
288 	attr.pa_sgid = info->ti_pi->p_sgid_tbl[0];
289 	attr.pa_pkey = gw_addr->ga_pkey;
290 
291 	bzero(&path, sizeof (ibt_path_info_t));
292 	ret = ibt_get_paths(ss->nx_ibt_hdl, IBT_PATH_PKEY,
293 	    &attr, 1, &path, NULL);
294 	if ((ret != IBT_SUCCESS) || (path.pi_hca_guid == 0)) {
295 		ENX_DPRINTF_ERR("ibt_get_paths() failed with "
296 		    "ret=%d, gid_prefix=%llx, gid_guid=%llx", ret,
297 		    gw_addr->ga_gid.gid_prefix, gw_addr->ga_gid.gid_guid);
298 		return (ENX_E_FAILURE);
299 	}
300 
301 	/*
302 	 * And save the address vector
303 	 */
304 	gw_addr->ga_vect = kmem_zalloc(sizeof (ibt_adds_vect_t), KM_SLEEP);
305 	bcopy(&path.pi_prim_cep_path.cep_adds_vect, gw_addr->ga_vect,
306 	    sizeof (ibt_adds_vect_t));
307 
308 	/*
309 	 * Modify the UD destination handle on this swqe entry to address
310 	 * this gateway
311 	 */
312 	ret = ibt_modify_ud_dest(swqe->qe_wr.send.wr.ud.udwr_dest,
313 	    gw_addr->ga_qkey, gw_addr->ga_qpn, gw_addr->ga_vect);
314 	if (ret != IBT_SUCCESS) {
315 		ENX_DPRINTF_ERR("ibt_modify_ud_dest() failed with "
316 		    "ret=%d, qkey=%x, qpn=%x", ret, gw_addr->ga_qkey,
317 		    gw_addr->ga_qpn);
318 		kmem_free(gw_addr->ga_vect, sizeof (ibt_adds_vect_t));
319 		gw_addr->ga_vect = NULL;
320 		return (ENX_E_FAILURE);
321 	}
322 
323 	return (ENX_E_SUCCESS);
324 }
325 
326 /*
327  * Send a solicit packet to the appropriate destination: if the
328  * destination gw addr is specified, send a unicast message to it;
329  * if not, send a multicast using the solicit mcg address.
330  */
331 static int
eibnx_fip_send_solicit_pkt(eibnx_thr_info_t * info,eibnx_wqe_t * swqe,eibnx_gw_addr_t * gw_addr)332 eibnx_fip_send_solicit_pkt(eibnx_thr_info_t *info, eibnx_wqe_t *swqe,
333     eibnx_gw_addr_t *gw_addr)
334 {
335 	ibt_status_t ret;
336 
337 	if (eibnx_setup_ud_dest(info, swqe, gw_addr) != ENX_E_SUCCESS)
338 		return (ENX_E_FAILURE);
339 
340 	mutex_enter(&swqe->qe_lock);
341 
342 	/*
343 	 * Note that if the post send fails, we don't really need to undo
344 	 * anything we did in setting up the ud destination; we can always
345 	 * use it for the next time.
346 	 */
347 	ret = ibt_post_send(info->ti_chan, &(swqe->qe_wr.send), 1, NULL);
348 	if (ret != IBT_SUCCESS) {
349 		mutex_exit(&swqe->qe_lock);
350 		ENX_DPRINTF_ERR("ibt_post_send() failed for solicit, "
351 		    "ret=%d", ret);
352 		return (ENX_E_FAILURE);
353 	}
354 
355 	/*
356 	 * Set the 'posted' flag for the send wqe. If this is an unicast
357 	 * send, the wqe is attached to a specific gw entry and we should
358 	 * not release the wqe back to the pool on the send completion.
359 	 */
360 	swqe->qe_flags |= ENX_QEFL_POSTED;
361 	if (gw_addr == NULL) {
362 		swqe->qe_flags |= ENX_QEFL_RELONCOMP;
363 		info->ti_mcast_done = 1;
364 	}
365 
366 	mutex_exit(&swqe->qe_lock);
367 
368 	return (ENX_E_SUCCESS);
369 }
370 
371 /*
372  * Parse a received packet from the gateway into the
373  * eibnx_gw_msg_t argument.  Note that at this point, this
374  * driver only expects to receive advertisements from the
375  * GW, nothing else.
376  */
377 int
eibnx_fip_parse_pkt(uint8_t * pkt,eibnx_gw_msg_t * msg)378 eibnx_fip_parse_pkt(uint8_t *pkt, eibnx_gw_msg_t *msg)
379 {
380 	fip_basic_hdr_t *hdr;
381 	uint16_t opcode;
382 	uint8_t subcode;
383 	int ret = ENX_E_FAILURE;
384 
385 	/*
386 	 * Lint complains about potential alignment problem here,
387 	 * but the fip_* structures are all packed and each of them
388 	 * is aligned on a word boundary, so we're ok.
389 	 */
390 	hdr = (fip_basic_hdr_t *)(pkt + sizeof (fip_proto_t));
391 
392 	/*
393 	 * Verify that the opcode is EoIB
394 	 */
395 	if ((opcode = ntohs(hdr->hd_opcode)) != FIP_OPCODE_EOIB) {
396 		ENX_DPRINTF_WARN("unsupported opcode (%x) found in "
397 		    "gw advertisement, ignoring", opcode);
398 		return (ENX_E_FAILURE);
399 	}
400 
401 	/*
402 	 * We only handle GW advertisements in the eibnx driver code.  However,
403 	 * the BridgeX gateway software currently sends login acknowledgements
404 	 * to the one who did the solicitation instead of the one who actually
405 	 * made the login request, so we need to do something about this as
406 	 * well.
407 	 */
408 	subcode = hdr->hd_subcode;
409 	switch (subcode) {
410 	case FIP_SUBCODE_G_ADVERTISE:
411 		ret = eibnx_fip_parse_advt_pkt(pkt, msg);
412 		break;
413 
414 	case FIP_SUBCODE_G_VNIC_LOGIN_ACK:
415 		msg->gm_type = FIP_VNIC_LOGIN_ACK;
416 		ret = ENX_E_SUCCESS;
417 		break;
418 
419 	default:
420 		ENX_DPRINTF_WARN("unsupported subcode (%x) found in "
421 		    "gw advertisement, ignoring", subcode);
422 		ret = ENX_E_FAILURE;
423 		break;
424 	}
425 
426 	return (ret);
427 }
428 
429 /*
430  * Parse and validate a packet known to be an advertisement from
431  * the GW.
432  */
433 static int
eibnx_fip_parse_advt_pkt(uint8_t * pkt,eibnx_gw_msg_t * msg)434 eibnx_fip_parse_advt_pkt(uint8_t *pkt, eibnx_gw_msg_t *msg)
435 {
436 	fip_advertise_t *advertise;
437 	fip_basic_hdr_t *hdr;
438 	fip_desc_iba_t *desc_iba;
439 	fip_desc_gwinfo_t *desc_gwinfo;
440 	fip_desc_gwid_t *desc_gwid;
441 	fip_desc_keepalive_t *desc_ka;
442 	eibnx_gw_info_t *gwi;
443 	ib_guid_t guid;
444 	uint16_t rss_qpn_num_net_vnics;
445 	uint16_t sl_portid;
446 	uint16_t flags;
447 
448 	/*
449 	 * Lint complains about potential alignment problem here,
450 	 * but we know that "pkt" is always atleast double-word
451 	 * aligned when it's passed to us, so we're ok.
452 	 */
453 	advertise = (fip_advertise_t *)pkt;
454 
455 	/*
456 	 * Verify if the descriptor list length in the received
457 	 * packet is valid.  Currently disabled.
458 	 *
459 	 * Experimentation shows that BX doesn't set the desc list
460 	 * length correctly, so we also simply ignore it and move
461 	 * on.  If and when BX fixes this problem, we'll need to
462 	 * enable the warning+failure below.
463 	 */
464 	hdr = &(advertise->ad_fip_header);
465 	if (!enx_wa_no_desc_list_len) {
466 		uint_t pkt_data_sz;
467 
468 		pkt_data_sz = (ntohs(hdr->hd_desc_list_len) + 2) << 2;
469 		if (pkt_data_sz < sizeof (fip_advertise_t)) {
470 			ENX_DPRINTF_WARN("advertisement from gw too small; "
471 			    "expected %x, got %x", sizeof (fip_advertise_t),
472 			    pkt_data_sz);
473 			return (ENX_E_FAILURE);
474 		}
475 	}
476 
477 	/*
478 	 * Validate all the header and descriptor types and lengths
479 	 */
480 
481 	if (hdr->hd_type != FIP_DESC_TYPE_VENDOR_ID ||
482 	    hdr->hd_len != FIP_DESC_LEN_VENDOR_ID) {
483 		ENX_DPRINTF_WARN("invalid type/len in fip basic header; "
484 		    "expected (%x,%x), got (%x,%x)", FIP_DESC_TYPE_VENDOR_ID,
485 		    FIP_DESC_LEN_VENDOR_ID, hdr->hd_type, hdr->hd_len);
486 		return (ENX_E_FAILURE);
487 	}
488 
489 	desc_iba = &(advertise->ad_iba);
490 	if (desc_iba->ia_type != FIP_DESC_TYPE_IBA ||
491 	    desc_iba->ia_len != FIP_DESC_LEN_IBA) {
492 		ENX_DPRINTF_WARN("invalid type/len in fip iba desc; "
493 		    "expected (%x,%x), got (%x,%x)", FIP_DESC_TYPE_IBA,
494 		    FIP_DESC_LEN_IBA, desc_iba->ia_type, desc_iba->ia_len);
495 		return (ENX_E_FAILURE);
496 	}
497 
498 	desc_gwinfo = &(advertise->ad_gwinfo);
499 	if (desc_gwinfo->gi_type != FIP_DESC_TYPE_EOIB_GW_INFO ||
500 	    desc_gwinfo->gi_len != FIP_DESC_LEN_EOIB_GW_INFO) {
501 		ENX_DPRINTF_WARN("invalid type/len in fip gwinfo desc; "
502 		    "expected (%x,%x), got (%x,%x)",
503 		    FIP_DESC_TYPE_EOIB_GW_INFO, FIP_DESC_LEN_EOIB_GW_INFO,
504 		    desc_gwinfo->gi_type, desc_gwinfo->gi_len);
505 		return (ENX_E_FAILURE);
506 	}
507 
508 	desc_gwid = &(advertise->ad_gwid);
509 	if (desc_gwid->id_type != FIP_DESC_TYPE_GW_ID ||
510 	    desc_gwid->id_len != FIP_DESC_LEN_GW_ID) {
511 		ENX_DPRINTF_WARN("invalid type/len in fip gwid desc; "
512 		    "expected (%x,%x), got (%x,%x)",
513 		    FIP_DESC_TYPE_GW_ID, FIP_DESC_LEN_GW_ID,
514 		    desc_gwid->id_type, desc_gwid->id_len);
515 		return (ENX_E_FAILURE);
516 	}
517 
518 	desc_ka = &(advertise->ad_keep_alive);
519 	if (desc_ka->ka_type != FIP_DESC_TYPE_KEEP_ALIVE ||
520 	    desc_ka->ka_len != FIP_DESC_LEN_KEEP_ALIVE) {
521 		ENX_DPRINTF_WARN("invalid type/len in fip ka desc; "
522 		    "expected (%x,%x), got (%x,%x)",
523 		    FIP_DESC_TYPE_KEEP_ALIVE, FIP_DESC_LEN_KEEP_ALIVE,
524 		    desc_ka->ka_type, desc_ka->ka_len);
525 		return (ENX_E_FAILURE);
526 	}
527 
528 	/*
529 	 * Record if the gw is available for login ('A' bit in the header)
530 	 */
531 	flags = ntohs(hdr->hd_flags);
532 	gwi = &(msg->u.gm_info);
533 	gwi->gw_flag_available = (flags & FIP_BHFLAG_GWAVAIL) ? 1 : 0;
534 
535 	/*
536 	 * Record if this was in response to a solicit request (unicast
537 	 * advertisement) or not ('S' bit in the header)
538 	 */
539 	gwi->gw_flag_ucast_advt = (flags & FIP_BHFLAG_SLCTMSG) ? 1 : 0;
540 	msg->gm_type = (gwi->gw_flag_ucast_advt) ?
541 	    FIP_GW_ADVERTISE_UCAST : FIP_GW_ADVERTISE_MCAST;
542 
543 	/*
544 	 * Record all info from the Infiniband Address descriptor
545 	 */
546 	gwi->gw_ctrl_qpn = (ntohl(desc_iba->ia_qpn) & FIP_IBA_QPN_MASK);
547 
548 	sl_portid = ntohs(desc_iba->ia_sl_portid);
549 	gwi->gw_portid = (sl_portid & FIP_IBA_PORTID_MASK);
550 	gwi->gw_sl = ((sl_portid & FIP_IBA_SL_MASK) >> FIP_IBA_SL_SHIFT);
551 
552 	gwi->gw_lid = ntohs(desc_iba->ia_lid);
553 
554 	bcopy(desc_iba->ia_guid, &guid, sizeof (ib_guid_t));
555 	gwi->gw_guid = ntohll(guid);
556 
557 	/*
558 	 * Record all info from the EoIB GW Information descriptor
559 	 */
560 	if (desc_gwinfo->gi_flags & FIP_GWI_HOST_ADMIND_VNICS_MASK)
561 		gwi->gw_is_host_adm_vnics = 1;
562 	else
563 		gwi->gw_is_host_adm_vnics = 0;
564 
565 	rss_qpn_num_net_vnics = ntohs(desc_gwinfo->gi_rss_qpn_num_net_vnics);
566 	gwi->gw_num_net_vnics = (rss_qpn_num_net_vnics &
567 	    FIP_GWI_NUM_NET_VNICS_MASK);
568 	gwi->gw_n_rss_qpn = ((rss_qpn_num_net_vnics &
569 	    FIP_GWI_RSS_QPN_MASK) >> FIP_GWI_RSS_QPN_SHIFT);
570 	bcopy(desc_gwinfo->gi_vendor_id, gwi->gw_vendor_id, FIP_VENDOR_LEN);
571 	(gwi->gw_vendor_id)[FIP_VENDOR_LEN] = '\0';
572 
573 	/*
574 	 * Record all info from the Gateway Identifier descriptor
575 	 */
576 	bcopy(desc_gwid->id_guid, &guid, sizeof (ib_guid_t));
577 	gwi->gw_system_guid = ntohll(guid);
578 	bcopy(desc_gwid->id_sysname, gwi->gw_system_name, FIP_SYSNAME_LEN);
579 	(gwi->gw_system_name)[FIP_SYSNAME_LEN] = '\0';
580 	bcopy(desc_gwid->id_portname, gwi->gw_port_name, FIP_PORTNAME_LEN);
581 	(gwi->gw_port_name)[FIP_PORTNAME_LEN] = '\0';
582 
583 	/*
584 	 * Record all info from the Keep Alive descriptor
585 	 */
586 	gwi->gw_adv_period = ntohl(desc_ka->ka_gw_adv_period);
587 	gwi->gw_ka_period = ntohl(desc_ka->ka_gw_ka_period);
588 	gwi->gw_vnic_ka_period = ntohl(desc_ka->ka_vnic_ka_period);
589 
590 	gwi->gw_next = NULL;
591 
592 	return (ENX_E_SUCCESS);
593 }
594 
595 /*
596  * Rollback whatever we did for making a solicit packet
597  */
598 static void
eibnx_rb_fip_make_solicit_pkt(eibnx_wqe_t * swqe)599 eibnx_rb_fip_make_solicit_pkt(eibnx_wqe_t *swqe)
600 {
601 	uint8_t *pkt = (uint8_t *)(uintptr_t)(swqe->qe_sgl.ds_va);
602 
603 	bzero(pkt, sizeof (fip_solicit_t));
604 	swqe->qe_sgl.ds_len = swqe->qe_bufsz;
605 }
606