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 /* Copyright (c) 1990 Mentat Inc. */
26
27 /*
28 * An implementation of the IPoIB-CM standard based on PSARC 2009/593.
29 */
30 #include <sys/types.h>
31 #include <sys/conf.h>
32 #include <sys/ddi.h>
33 #include <sys/sunddi.h>
34 #include <sys/modctl.h>
35 #include <sys/stropts.h>
36 #include <sys/stream.h>
37 #include <sys/strsun.h>
38 #include <sys/strsubr.h>
39 #include <sys/dlpi.h>
40 #include <sys/mac_provider.h>
41
42 #include <sys/pattr.h> /* for HCK_FULLCKSUM */
43 #include <sys/atomic.h> /* for atomic_add*() */
44 #include <sys/ethernet.h> /* for ETHERTYPE_IP */
45 #include <netinet/in.h> /* for netinet/ip.h below */
46 #include <netinet/ip.h> /* for struct ip */
47 #include <inet/common.h> /* for inet/ip.h below */
48 #include <inet/ip.h> /* for ipha_t */
49 #include <inet/ip_if.h> /* for ETHERTYPE_IPV6 */
50 #include <inet/ip6.h> /* for ip6_t */
51 #include <netinet/icmp6.h> /* for icmp6_t */
52
53 #include <sys/ib/clients/ibd/ibd.h>
54
55 extern ibd_global_state_t ibd_gstate;
56 extern int ibd_rc_conn_timeout;
57 uint_t ibd_rc_tx_softintr = 1;
58 /*
59 * If the number of WRs in receive queue of each RC connection less than
60 * IBD_RC_RX_WR_THRESHOLD, we will post more receive WRs into it.
61 */
62 #define IBD_RC_RX_WR_THRESHOLD 0x20
63
64 /*
65 * If the number of free SWQEs (or large Tx buf) is larger than or equal to
66 * IBD_RC_TX_FREE_THRESH, we will call mac_tx_update to notify GLD to continue
67 * transmitting packets.
68 */
69 #define IBD_RC_TX_FREE_THRESH 8
70
71 #define IBD_RC_QPN_TO_SID(qpn) \
72 ((uint64_t)(IBD_RC_SERVICE_ID | ((qpn) & 0xffffff)))
73
74 /* For interop with legacy OFED */
75 #define IBD_RC_QPN_TO_SID_OFED_INTEROP(qpn) \
76 ((uint64_t)(IBD_RC_SERVICE_ID_OFED_INTEROP | ((qpn) & 0xffffff)))
77
78 /* Internet Header + 64 bits of Data Datagram. Refer to RFC 792 */
79 #define IBD_RC_IP_ICMP_RETURN_DATA_BYTES 64
80
81
82 /* Functions for Reliable Connected Mode */
83 /* Connection Setup/Close Functions */
84 static ibt_cm_status_t ibd_rc_dispatch_pass_mad(void *,
85 ibt_cm_event_t *, ibt_cm_return_args_t *, void *, ibt_priv_data_len_t);
86 static ibt_cm_status_t ibd_rc_dispatch_actv_mad(void *,
87 ibt_cm_event_t *, ibt_cm_return_args_t *, void *, ibt_priv_data_len_t);
88 static void ibd_rc_act_close(ibd_rc_chan_t *, boolean_t);
89
90 static inline void ibd_rc_add_to_chan_list(ibd_rc_chan_list_t *,
91 ibd_rc_chan_t *);
92 static inline ibd_rc_chan_t *ibd_rc_rm_header_chan_list(
93 ibd_rc_chan_list_t *);
94 static inline ibd_rc_chan_t *ibd_rc_rm_from_chan_list(ibd_rc_chan_list_t *,
95 ibd_rc_chan_t *);
96
97 /* CQ handlers */
98 static void ibd_rc_rcq_handler(ibt_cq_hdl_t, void *);
99 static void ibd_rc_scq_handler(ibt_cq_hdl_t, void *);
100 static void ibd_rc_poll_rcq(ibd_rc_chan_t *, ibt_cq_hdl_t);
101
102 /* Receive Functions */
103 static int ibd_rc_post_srq(ibd_state_t *, ibd_rwqe_t *);
104 static void ibd_rc_srq_freemsg_cb(char *);
105 static void ibd_rc_srq_free_rwqe(ibd_state_t *, ibd_rwqe_t *);
106
107 static int ibd_rc_post_rwqe(ibd_rc_chan_t *, ibd_rwqe_t *);
108 static void ibd_rc_freemsg_cb(char *);
109 static void ibd_rc_process_rx(ibd_rc_chan_t *, ibd_rwqe_t *, ibt_wc_t *);
110 static void ibd_rc_free_rwqe(ibd_rc_chan_t *, ibd_rwqe_t *);
111 static void ibd_rc_fini_rxlist(ibd_rc_chan_t *);
112
113
114 /* Send Functions */
115 static void ibd_rc_release_swqe(ibd_rc_chan_t *, ibd_swqe_t *);
116 static int ibd_rc_init_txlist(ibd_rc_chan_t *);
117 static void ibd_rc_fini_txlist(ibd_rc_chan_t *);
118 static uint_t ibd_rc_tx_recycle(caddr_t);
119
120
121 void
122 ibd_async_rc_close_act_chan(ibd_state_t *state, ibd_req_t *req)
123 {
124 ibd_rc_chan_t *rc_chan = req->rq_ptr;
125 ibd_ace_t *ace;
126
127 while (rc_chan != NULL) {
128 ace = rc_chan->ace;
129 ASSERT(ace != NULL);
130 /* Close old RC channel */
131 ibd_rc_act_close(rc_chan, B_TRUE);
132 mutex_enter(&state->id_ac_mutex);
133 ASSERT(ace->ac_ref != 0);
134 atomic_dec_32(&ace->ac_ref);
135 ace->ac_chan = NULL;
136 if ((ace->ac_ref == 0) || (ace->ac_ref == CYCLEVAL)) {
137 IBD_ACACHE_INSERT_FREE(state, ace);
138 ace->ac_ref = 0;
139 } else {
140 ace->ac_ref |= CYCLEVAL;
141 state->rc_delay_ace_recycle++;
142 }
143 mutex_exit(&state->id_ac_mutex);
144 rc_chan = ibd_rc_rm_header_chan_list(
145 &state->rc_obs_act_chan_list);
146 }
147 }
148
149 void
150 ibd_async_rc_recycle_ace(ibd_state_t *state, ibd_req_t *req)
151 {
152 ibd_ace_t *ace = req->rq_ptr;
153 ibd_rc_chan_t *rc_chan;
154
155 ASSERT(ace != NULL);
156 rc_chan = ace->ac_chan;
157 ASSERT(rc_chan != NULL);
158 /* Close old RC channel */
159 ibd_rc_act_close(rc_chan, B_TRUE);
160 mutex_enter(&state->id_ac_mutex);
161 ASSERT(ace->ac_ref != 0);
162 atomic_dec_32(&ace->ac_ref);
163 ace->ac_chan = NULL;
164 if ((ace->ac_ref == 0) || (ace->ac_ref == CYCLEVAL)) {
165 IBD_ACACHE_INSERT_FREE(state, ace);
166 ace->ac_ref = 0;
167 } else {
168 ace->ac_ref |= CYCLEVAL;
169 state->rc_delay_ace_recycle++;
170 }
171 mutex_exit(&state->id_ac_mutex);
172 mutex_enter(&state->rc_ace_recycle_lock);
173 state->rc_ace_recycle = NULL;
174 mutex_exit(&state->rc_ace_recycle_lock);
175 }
176
177 /* Simple ICMP IP Header Template */
178 static const ipha_t icmp_ipha = {
179 IP_SIMPLE_HDR_VERSION, 0, 0, 0, 0, 0, IPPROTO_ICMP
180 };
181
182 /* Packet is too big. Send ICMP packet to GLD to request a smaller MTU */
183 void
184 ibd_async_rc_process_too_big(ibd_state_t *state, ibd_req_t *req)
185 {
186 mblk_t *mp = req->rq_ptr;
187 ibd_ace_t *ace = req->rq_ptr2;
188 uint16_t mtu = state->id_mtu - IPOIB_HDRSIZE;
189 uint_t len_needed;
190 size_t msg_len;
191 mblk_t *pmtu_mp;
192 ushort_t sap;
193 ib_header_info_t *ibha; /* ib header for pmtu_pkt */
194 /*
195 * ipha: IP header for pmtu_pkt
196 * old_ipha: IP header for old packet
197 */
198 ipha_t *ipha, *old_ipha;
199 icmph_t *icmph;
200
201 sap = ntohs(((ipoib_hdr_t *)mp->b_rptr)->ipoib_type);
202
203 if (!pullupmsg(mp, -1)) {
204 DPRINT(40, "ibd_async_rc_process_too_big: pullupmsg fail");
205 goto too_big_fail;
206 }
207 /* move to IP header. */
208 mp->b_rptr += IPOIB_HDRSIZE;
209 old_ipha = (ipha_t *)mp->b_rptr;
210
211 len_needed = IPH_HDR_LENGTH(old_ipha);
212 if (old_ipha->ipha_protocol == IPPROTO_ENCAP) {
213 len_needed += IPH_HDR_LENGTH(((uchar_t *)old_ipha +
214 len_needed));
215 } else if (old_ipha->ipha_protocol == IPPROTO_IPV6) {
216 ip6_t *ip6h = (ip6_t *)((uchar_t *)old_ipha
217 + len_needed);
218 len_needed += ip_hdr_length_v6(mp, ip6h);
219 }
220 len_needed += IBD_RC_IP_ICMP_RETURN_DATA_BYTES;
221 msg_len = msgdsize(mp);
222 if (msg_len > len_needed) {
223 (void) adjmsg(mp, len_needed - msg_len);
224 msg_len = len_needed;
225 }
226
227 if ((pmtu_mp = allocb(sizeof (ib_header_info_t) + sizeof (ipha_t)
228 + sizeof (icmph_t), BPRI_MED)) == NULL) {
229 DPRINT(40, "ibd_async_rc_process_too_big: allocb fail");
230 goto too_big_fail;
231 }
232 pmtu_mp->b_cont = mp;
233 pmtu_mp->b_wptr = pmtu_mp->b_rptr + sizeof (ib_header_info_t)
234 + sizeof (ipha_t) + sizeof (icmph_t);
235
236 ibha = (ib_header_info_t *)pmtu_mp->b_rptr;
237
238 /* Fill IB header */
239 bcopy(&state->id_macaddr, &ibha->ib_dst, IPOIB_ADDRL);
240 /*
241 * If the GRH is not valid, indicate to GLDv3 by setting
242 * the VerTcFlow field to 0.
243 */
244 ibha->ib_grh.ipoib_vertcflow = 0;
245 ibha->ipib_rhdr.ipoib_type = htons(sap);
246 ibha->ipib_rhdr.ipoib_mbz = 0;
247
248 /* Fill IP header */
249 ipha = (ipha_t *)&ibha[1];
250 *ipha = icmp_ipha;
251 ipha->ipha_src = old_ipha->ipha_dst;
252 ipha->ipha_dst = old_ipha->ipha_src;
253 ipha->ipha_ttl = old_ipha->ipha_ttl;
254 msg_len += sizeof (icmp_ipha) + sizeof (icmph_t);
255 if (msg_len > IP_MAXPACKET) {
256 ibd_print_warn(state, "ibd_rc_process_too_big_pkt: msg_len(%d) "
257 "> IP_MAXPACKET", (uint32_t)msg_len);
258 (void) adjmsg(mp, IP_MAXPACKET - msg_len);
259 msg_len = IP_MAXPACKET;
260 }
261 ipha->ipha_length = htons((uint16_t)msg_len);
262 ipha->ipha_hdr_checksum = 0;
263 ipha->ipha_hdr_checksum = (uint16_t)ip_csum_hdr(ipha);
264
265 /* Fill ICMP body */
266 icmph = (icmph_t *)&ipha[1];
267 bzero(icmph, sizeof (icmph_t));
268 icmph->icmph_type = ICMP_DEST_UNREACHABLE;
269 icmph->icmph_code = ICMP_FRAGMENTATION_NEEDED;
270 icmph->icmph_du_mtu = htons(mtu);
271 icmph->icmph_checksum = 0;
272 icmph->icmph_checksum = IP_CSUM(pmtu_mp,
273 (int32_t)sizeof (ib_header_info_t) + (int32_t)sizeof (ipha_t), 0);
274
275 (void) hcksum_assoc(pmtu_mp, NULL, NULL, 0, 0, 0, 0,
276 HCK_FULLCKSUM | HCK_FULLCKSUM_OK, 0);
277
278 DPRINT(30, "ibd_async_rc_process_too_big: sap=0x%x, ip_src=0x%x, "
279 "ip_dst=0x%x, ttl=%d, len_needed=%d, msg_len=%d",
280 sap, ipha->ipha_src, ipha->ipha_dst, ipha->ipha_ttl,
281 len_needed, (uint32_t)msg_len);
282
283 mac_rx(state->id_mh, state->id_rh, pmtu_mp);
284
285 mutex_enter(&ace->tx_too_big_mutex);
286 ace->tx_too_big_ongoing = B_FALSE;
287 mutex_exit(&ace->tx_too_big_mutex);
288 return;
289
290 too_big_fail:
291 /* Drop packet */
292 freemsg(mp);
293 mutex_enter(&ace->tx_too_big_mutex);
294 ace->tx_too_big_ongoing = B_FALSE;
295 mutex_exit(&ace->tx_too_big_mutex);
296 }
297
298 /*
299 * Check all active/passive channels. If any ative/passive
300 * channel has not been used for a long time, close it.
301 */
302 void
303 ibd_rc_conn_timeout_call(void *carg)
304 {
305 ibd_state_t *state = carg;
306 ibd_ace_t *ace, *pre_ace;
307 ibd_rc_chan_t *chan, *pre_chan, *next_chan;
308 ibd_req_t *req;
309
310 /* Check all active channels. If chan->is_used == B_FALSE, close it */
311 mutex_enter(&state->id_ac_mutex);
312 ace = list_head(&state->id_ah_active);
313 while ((pre_ace = ace) != NULL) {
314 ace = list_next(&state->id_ah_active, ace);
315 if (pre_ace->ac_chan != NULL) {
316 chan = pre_ace->ac_chan;
317 ASSERT(state->id_enable_rc == B_TRUE);
318 if (chan->chan_state == IBD_RC_STATE_ACT_ESTAB) {
319 if (chan->is_used == B_FALSE) {
320 state->rc_timeout_act++;
321 INC_REF(pre_ace, 1);
322 IBD_ACACHE_PULLOUT_ACTIVE(state,
323 pre_ace);
324 chan->chan_state =
325 IBD_RC_STATE_ACT_CLOSING;
326 ibd_rc_signal_act_close(state, pre_ace);
327 } else {
328 chan->is_used = B_FALSE;
329 }
330 }
331 }
332 }
333 mutex_exit(&state->id_ac_mutex);
334
335 /* Check all passive channels. If chan->is_used == B_FALSE, close it */
336 mutex_enter(&state->rc_pass_chan_list.chan_list_mutex);
337 next_chan = state->rc_pass_chan_list.chan_list;
338 pre_chan = NULL;
339 while ((chan = next_chan) != NULL) {
340 next_chan = chan->next;
341 if (chan->is_used == B_FALSE) {
342 req = kmem_cache_alloc(state->id_req_kmc, KM_NOSLEEP);
343 if (req != NULL) {
344 /* remove it */
345 state->rc_timeout_pas++;
346 req->rq_ptr = chan;
347 ibd_queue_work_slot(state, req,
348 IBD_ASYNC_RC_CLOSE_PAS_CHAN);
349 } else {
350 ibd_print_warn(state, "ibd_rc_conn_timeout: "
351 "alloc ibd_req_t fail");
352 if (pre_chan == NULL) {
353 state->rc_pass_chan_list.chan_list =
354 chan;
355 } else {
356 pre_chan->next = chan;
357 }
358 pre_chan = chan;
359 }
360 } else {
361 if (pre_chan == NULL) {
362 state->rc_pass_chan_list.chan_list = chan;
363 } else {
364 pre_chan->next = chan;
365 }
366 pre_chan = chan;
367 chan->is_used = B_FALSE;
368 }
369 }
370 if (pre_chan != NULL) {
371 pre_chan->next = NULL;
372 } else {
373 state->rc_pass_chan_list.chan_list = NULL;
374 }
375 mutex_exit(&state->rc_pass_chan_list.chan_list_mutex);
376
377 mutex_enter(&state->rc_timeout_lock);
378 if (state->rc_timeout_start == B_TRUE) {
379 state->rc_timeout = timeout(ibd_rc_conn_timeout_call, state,
380 SEC_TO_TICK(ibd_rc_conn_timeout));
381 }
382 mutex_exit(&state->rc_timeout_lock);
383 }
384
385 #ifdef DEBUG
386 /*
387 * ibd_rc_update_stats - update driver private kstat counters
388 *
389 * This routine will dump the internal statistics counters for ibd's
390 * Reliable Connected Mode. The current stats dump values will
391 * be sent to the kernel status area.
392 */
393 static int
394 ibd_rc_update_stats(kstat_t *ksp, int rw)
395 {
396 ibd_state_t *state;
397 ibd_rc_stat_t *ibd_rc_ksp;
398
399 if (rw == KSTAT_WRITE)
400 return (EACCES);
401
402 state = (ibd_state_t *)ksp->ks_private;
403 ASSERT(state != NULL);
404 ibd_rc_ksp = (ibd_rc_stat_t *)ksp->ks_data;
405
406 ibd_rc_ksp->rc_rcv_trans_byte.value.ul = state->rc_rcv_trans_byte;
407 ibd_rc_ksp->rc_rcv_trans_pkt.value.ul = state->rc_rcv_trans_pkt;
408 ibd_rc_ksp->rc_rcv_copy_byte.value.ul = state->rc_rcv_copy_byte;
409 ibd_rc_ksp->rc_rcv_copy_pkt.value.ul = state->rc_rcv_copy_pkt;
410 ibd_rc_ksp->rc_rcv_alloc_fail.value.ul = state->rc_rcv_alloc_fail;
411
412 ibd_rc_ksp->rc_rcq_err.value.ul = state->rc_rcq_err;
413
414 ibd_rc_ksp->rc_rwqe_short.value.ul = state->rc_rwqe_short;
415
416 ibd_rc_ksp->rc_xmt_bytes.value.ul = state->rc_xmt_bytes;
417 ibd_rc_ksp->rc_xmt_small_pkt.value.ul = state->rc_xmt_small_pkt;
418 ibd_rc_ksp->rc_xmt_fragmented_pkt.value.ul =
419 state->rc_xmt_fragmented_pkt;
420 ibd_rc_ksp->rc_xmt_map_fail_pkt.value.ul = state->rc_xmt_map_fail_pkt;
421 ibd_rc_ksp->rc_xmt_map_succ_pkt.value.ul = state->rc_xmt_map_succ_pkt;
422 ibd_rc_ksp->rc_ace_not_found.value.ul = state->rc_ace_not_found;
423
424 ibd_rc_ksp->rc_scq_no_swqe.value.ul = state->rc_scq_no_swqe;
425 ibd_rc_ksp->rc_scq_no_largebuf.value.ul = state->rc_scq_no_largebuf;
426 ibd_rc_ksp->rc_swqe_short.value.ul = state->rc_swqe_short;
427 ibd_rc_ksp->rc_swqe_mac_update.value.ul = state->rc_swqe_mac_update;
428 ibd_rc_ksp->rc_xmt_buf_short.value.ul = state->rc_xmt_buf_short;
429 ibd_rc_ksp->rc_xmt_buf_mac_update.value.ul =
430 state->rc_xmt_buf_mac_update;
431
432 ibd_rc_ksp->rc_conn_succ.value.ul = state->rc_conn_succ;
433 ibd_rc_ksp->rc_conn_fail.value.ul = state->rc_conn_fail;
434 ibd_rc_ksp->rc_null_conn.value.ul = state->rc_null_conn;
435 ibd_rc_ksp->rc_no_estab_conn.value.ul = state->rc_no_estab_conn;
436
437 ibd_rc_ksp->rc_act_close.value.ul = state->rc_act_close;
438 ibd_rc_ksp->rc_pas_close.value.ul = state->rc_pas_close;
439 ibd_rc_ksp->rc_delay_ace_recycle.value.ul = state->rc_delay_ace_recycle;
440 ibd_rc_ksp->rc_act_close_simultaneous.value.ul =
441 state->rc_act_close_simultaneous;
442 ibd_rc_ksp->rc_reset_cnt.value.ul = state->rc_reset_cnt;
443 ibd_rc_ksp->rc_timeout_act.value.ul = state->rc_timeout_act;
444 ibd_rc_ksp->rc_timeout_pas.value.ul = state->rc_timeout_pas;
445
446 return (0);
447 }
448
449
450 /*
451 * ibd_rc_init_stats - initialize kstat data structures
452 *
453 * This routine will create and initialize the driver private
454 * statistics counters.
455 */
456 int
457 ibd_rc_init_stats(ibd_state_t *state)
458 {
459 kstat_t *ksp;
460 ibd_rc_stat_t *ibd_rc_ksp;
461 char stat_name[KSTAT_STRLEN];
462 int inst;
463
464 /*
465 * Create and init kstat
466 */
467 inst = ddi_get_instance(state->id_dip);
468 (void) snprintf(stat_name, KSTAT_STRLEN, "statistics%d_%x_%u", inst,
469 state->id_pkey, state->id_plinkid);
470 ksp = kstat_create("ibd", 0, stat_name, "net", KSTAT_TYPE_NAMED,
471 sizeof (ibd_rc_stat_t) / sizeof (kstat_named_t), 0);
472
473 if (ksp == NULL) {
474 ibd_print_warn(state, "ibd_rc_init_stats: Could not create "
475 "kernel statistics");
476 return (DDI_FAILURE);
477 }
478
479 state->rc_ksp = ksp; /* Fill in the ksp of ibd over RC mode */
480
481 ibd_rc_ksp = (ibd_rc_stat_t *)ksp->ks_data;
482
483 /*
484 * Initialize all the statistics
485 */
486 kstat_named_init(&ibd_rc_ksp->rc_rcv_trans_byte, "RC: Rx Bytes, "
487 "transfer mode", KSTAT_DATA_ULONG);
488 kstat_named_init(&ibd_rc_ksp->rc_rcv_trans_pkt, "RC: Rx Pkts, "
489 "transfer mode", KSTAT_DATA_ULONG);
490 kstat_named_init(&ibd_rc_ksp->rc_rcv_copy_byte, "RC: Rx Bytes, "
491 "copy mode", KSTAT_DATA_ULONG);
492 kstat_named_init(&ibd_rc_ksp->rc_rcv_copy_pkt, "RC: Rx Pkts, "
493 "copy mode", KSTAT_DATA_ULONG);
494 kstat_named_init(&ibd_rc_ksp->rc_rcv_alloc_fail, "RC: Rx alloc fail",
495 KSTAT_DATA_ULONG);
496
497 kstat_named_init(&ibd_rc_ksp->rc_rcq_err, "RC: fail in Recv CQ handler",
498 KSTAT_DATA_ULONG);
499
500 kstat_named_init(&ibd_rc_ksp->rc_rwqe_short, "RC: Short rwqe",
501 KSTAT_DATA_ULONG);
502
503 kstat_named_init(&ibd_rc_ksp->rc_xmt_bytes, "RC: Sent Bytes",
504 KSTAT_DATA_ULONG);
505 kstat_named_init(&ibd_rc_ksp->rc_xmt_small_pkt,
506 "RC: Tx pkt small size", KSTAT_DATA_ULONG);
507 kstat_named_init(&ibd_rc_ksp->rc_xmt_fragmented_pkt,
508 "RC: Tx pkt fragmentary", KSTAT_DATA_ULONG);
509 kstat_named_init(&ibd_rc_ksp->rc_xmt_map_fail_pkt,
510 "RC: Tx pkt fail ibt_map_mem_iov()", KSTAT_DATA_ULONG);
511 kstat_named_init(&ibd_rc_ksp->rc_xmt_map_succ_pkt,
512 "RC: Tx pkt succ ibt_map_mem_iov()", KSTAT_DATA_ULONG);
513 kstat_named_init(&ibd_rc_ksp->rc_ace_not_found, "RC: ace not found",
514 KSTAT_DATA_ULONG);
515
516 kstat_named_init(&ibd_rc_ksp->rc_scq_no_swqe, "RC: No swqe after "
517 "recycle", KSTAT_DATA_ULONG);
518 kstat_named_init(&ibd_rc_ksp->rc_scq_no_largebuf, "RC: No large tx buf "
519 "after recycle", KSTAT_DATA_ULONG);
520 kstat_named_init(&ibd_rc_ksp->rc_swqe_short, "RC: No swqe in ibd_send",
521 KSTAT_DATA_ULONG);
522 kstat_named_init(&ibd_rc_ksp->rc_swqe_mac_update, "RC: mac_tx_update "
523 "#, swqe available", KSTAT_DATA_ULONG);
524 kstat_named_init(&ibd_rc_ksp->rc_xmt_buf_short, "RC: No buf in "
525 "ibd_send", KSTAT_DATA_ULONG);
526 kstat_named_init(&ibd_rc_ksp->rc_xmt_buf_mac_update, "RC: "
527 "mac_tx_update #, buf available", KSTAT_DATA_ULONG);
528
529 kstat_named_init(&ibd_rc_ksp->rc_conn_succ, "RC: succ connected",
530 KSTAT_DATA_ULONG);
531 kstat_named_init(&ibd_rc_ksp->rc_conn_fail, "RC: fail connect",
532 KSTAT_DATA_ULONG);
533 kstat_named_init(&ibd_rc_ksp->rc_null_conn, "RC: null conn for unicast "
534 "pkt", KSTAT_DATA_ULONG);
535 kstat_named_init(&ibd_rc_ksp->rc_no_estab_conn, "RC: not in act estab "
536 "state", KSTAT_DATA_ULONG);
537
538 kstat_named_init(&ibd_rc_ksp->rc_act_close, "RC: call ibd_rc_act_close",
539 KSTAT_DATA_ULONG);
540 kstat_named_init(&ibd_rc_ksp->rc_pas_close, "RC: call ibd_rc_pas_close",
541 KSTAT_DATA_ULONG);
542 kstat_named_init(&ibd_rc_ksp->rc_delay_ace_recycle, "RC: delay ace "
543 "recycle", KSTAT_DATA_ULONG);
544 kstat_named_init(&ibd_rc_ksp->rc_act_close_simultaneous, "RC: "
545 "simultaneous ibd_rc_act_close", KSTAT_DATA_ULONG);
546 kstat_named_init(&ibd_rc_ksp->rc_reset_cnt, "RC: Reset RC channel",
547 KSTAT_DATA_ULONG);
548 kstat_named_init(&ibd_rc_ksp->rc_act_close, "RC: timeout act side",
549 KSTAT_DATA_ULONG);
550 kstat_named_init(&ibd_rc_ksp->rc_pas_close, "RC: timeout pas side",
551 KSTAT_DATA_ULONG);
552
553 /*
554 * Function to provide kernel stat update on demand
555 */
556 ksp->ks_update = ibd_rc_update_stats;
557
558 /*
559 * Pointer into provider's raw statistics
560 */
561 ksp->ks_private = (void *)state;
562
563 /*
564 * Add kstat to systems kstat chain
565 */
566 kstat_install(ksp);
567
568 return (DDI_SUCCESS);
569 }
570 #endif
571
572 static ibt_status_t
573 ibd_rc_alloc_chan(ibd_rc_chan_t **ret_chan, ibd_state_t *state,
574 boolean_t is_tx_chan)
575 {
576 ibt_status_t result;
577 ibd_rc_chan_t *chan;
578 ibt_rc_chan_alloc_args_t alloc_args;
579 ibt_chan_alloc_flags_t alloc_flags;
580 ibt_chan_sizes_t sizes;
581 ibt_cq_attr_t cq_atts;
582 int rv;
583
584 chan = kmem_zalloc(sizeof (ibd_rc_chan_t), KM_SLEEP);
585
586 chan->state = state;
587 mutex_init(&chan->rx_wqe_list.dl_mutex, NULL, MUTEX_DRIVER, NULL);
588 mutex_init(&chan->rx_free_list.dl_mutex, NULL, MUTEX_DRIVER, NULL);
589 mutex_init(&chan->tx_wqe_list.dl_mutex, NULL, MUTEX_DRIVER, NULL);
590 mutex_init(&chan->tx_rel_list.dl_mutex, NULL, MUTEX_DRIVER, NULL);
591 mutex_init(&chan->tx_post_lock, NULL, MUTEX_DRIVER, NULL);
592 mutex_init(&chan->tx_poll_lock, NULL, MUTEX_DRIVER, NULL);
593
594 /* Allocate IB structures for a new RC channel. */
595 if (is_tx_chan) {
596 chan->scq_size = state->id_rc_num_swqe;
597 chan->rcq_size = IBD_RC_MIN_CQ_SIZE;
598 } else {
599 chan->scq_size = IBD_RC_MIN_CQ_SIZE;
600 chan->rcq_size = state->id_rc_num_rwqe;
601 }
602 cq_atts.cq_size = chan->scq_size;
603 cq_atts.cq_sched = NULL;
604 cq_atts.cq_flags = IBT_CQ_NO_FLAGS;
605 result = ibt_alloc_cq(state->id_hca_hdl, &cq_atts, &chan->scq_hdl,
606 &chan->scq_size);
607 if (result != IBT_SUCCESS) {
608 DPRINT(40, "ibd_rc_alloc_chan: error <%d>"
609 "create scq completion queue (size <%d>)",
610 result, chan->scq_size);
611 goto alloc_scq_err;
612 } /* if failure to alloc cq */
613
614 if (ibt_modify_cq(chan->scq_hdl, state->id_rc_tx_comp_count,
615 state->id_rc_tx_comp_usec, 0) != IBT_SUCCESS) {
616 DPRINT(30, "ibd_rc_alloc_chan: Send CQ "
617 "interrupt moderation failed");
618 }
619
620 ibt_set_cq_private(chan->scq_hdl, (void *) (uintptr_t)chan);
621 ibt_set_cq_handler(chan->scq_hdl, ibd_rc_scq_handler,
622 (void *) (uintptr_t)chan);
623
624 cq_atts.cq_size = chan->rcq_size;
625 cq_atts.cq_sched = NULL;
626 cq_atts.cq_flags = IBT_CQ_NO_FLAGS;
627 result = ibt_alloc_cq(state->id_hca_hdl, &cq_atts, &chan->rcq_hdl,
628 &chan->rcq_size);
629 if (result != IBT_SUCCESS) {
630 ibd_print_warn(state, "ibd_rc_alloc_chan: error <%d> creating "
631 "rx completion queue (size <%d>)", result, chan->rcq_size);
632 goto alloc_rcq_err;
633 } /* if failure to alloc cq */
634
635 if (ibt_modify_cq(chan->rcq_hdl, state->id_rc_rx_comp_count,
636 state->id_rc_rx_comp_usec, 0) != IBT_SUCCESS) {
637 DPRINT(30, "ibd_rc_alloc_chan: Receive CQ "
638 "interrupt moderation failed");
639 }
640
641 ibt_set_cq_private(chan->rcq_hdl, (void *) (uintptr_t)chan);
642 ibt_set_cq_handler(chan->rcq_hdl, ibd_rc_rcq_handler,
643 (void *)(uintptr_t)chan);
644
645 if (is_tx_chan) {
646 chan->is_tx_chan = B_TRUE;
647 if (ibd_rc_init_txlist(chan) != DDI_SUCCESS) {
648 ibd_print_warn(state, "ibd_rc_alloc_chan: "
649 "ibd_rc_init_txlist failed");
650 goto init_txlist_err;
651 }
652 if (ibd_rc_tx_softintr == 1) {
653 if ((rv = ddi_add_softintr(state->id_dip,
654 DDI_SOFTINT_LOW, &chan->scq_softintr, NULL, NULL,
655 ibd_rc_tx_recycle, (caddr_t)chan)) !=
656 DDI_SUCCESS) {
657 DPRINT(10, "ibd_rc_alloc_chan: failed in "
658 "ddi_add_softintr(scq_softintr), ret=%d",
659 rv);
660 goto alloc_softintr_err;
661 }
662 }
663 } else {
664 chan->is_tx_chan = B_FALSE;
665 }
666
667 /*
668 * enable completions
669 */
670 result = ibt_enable_cq_notify(chan->scq_hdl, IBT_NEXT_COMPLETION);
671 if (result != IBT_SUCCESS) {
672 ibd_print_warn(state, "ibd_rc_alloc_chan: ibt_enable_cq_notify"
673 "(scq) failed: status %d\n", result);
674 goto alloc_scq_enable_err;
675 }
676
677 /* We will enable chan->rcq_hdl later. */
678
679 /* alloc a RC channel */
680 bzero(&alloc_args, sizeof (ibt_rc_chan_alloc_args_t));
681 bzero(&sizes, sizeof (ibt_chan_sizes_t));
682
683 alloc_args.rc_flags = IBT_WR_SIGNALED;
684 alloc_args.rc_control = IBT_CEP_NO_FLAGS;
685
686 alloc_args.rc_scq = chan->scq_hdl;
687 alloc_args.rc_rcq = chan->rcq_hdl;
688 alloc_args.rc_pd = state->id_pd_hdl;
689
690 alloc_args.rc_hca_port_num = state->id_port;
691 alloc_args.rc_clone_chan = NULL;
692
693 /* scatter/gather */
694 alloc_args.rc_sizes.cs_sq_sgl = state->rc_tx_max_sqseg;
695
696 /*
697 * For the number of SGL elements in receive side, I think it
698 * should be 1. Because ibd driver allocates a whole block memory
699 * for each ibt_post_recv().
700 */
701 alloc_args.rc_sizes.cs_rq_sgl = 1;
702
703 /* The send queue size and the receive queue size */
704 alloc_args.rc_sizes.cs_sq = chan->scq_size;
705 alloc_args.rc_sizes.cs_rq = chan->rcq_size;
706
707 if (state->id_hca_res_lkey_capab) {
708 alloc_args.rc_flags = IBT_FAST_REG_RES_LKEY;
709 } else {
710 DPRINT(40, "ibd_rc_alloc_chan: not support reserved lkey");
711 }
712
713 if (state->rc_enable_srq) {
714 alloc_flags = IBT_ACHAN_USES_SRQ;
715 alloc_args.rc_srq = state->rc_srq_hdl;
716 } else {
717 alloc_flags = IBT_ACHAN_NO_FLAGS;
718 }
719
720 result = ibt_alloc_rc_channel(state->id_hca_hdl,
721 alloc_flags, &alloc_args, &chan->chan_hdl, &sizes);
722 if (result != IBT_SUCCESS) {
723 ibd_print_warn(state, "ibd_rc_alloc_chan: ibd_rc_open_channel"
724 " fail:<%d>", result);
725 goto alloc_scq_enable_err;
726 }
727
728 if (is_tx_chan)
729 atomic_inc_32(&state->rc_num_tx_chan);
730 else
731 atomic_inc_32(&state->rc_num_rx_chan);
732
733 /* For the connection reaper routine ibd_rc_conn_timeout_call() */
734 chan->is_used = B_TRUE;
735
736 *ret_chan = chan;
737 return (IBT_SUCCESS);
738
739 alloc_scq_enable_err:
740 if (is_tx_chan) {
741 if (ibd_rc_tx_softintr == 1) {
742 ddi_remove_softintr(chan->scq_softintr);
743 }
744 }
745 alloc_softintr_err:
746 if (is_tx_chan) {
747 ibd_rc_fini_txlist(chan);
748 }
749 init_txlist_err:
750 (void) ibt_free_cq(chan->rcq_hdl);
751 alloc_rcq_err:
752 (void) ibt_free_cq(chan->scq_hdl);
753 alloc_scq_err:
754 mutex_destroy(&chan->tx_poll_lock);
755 mutex_destroy(&chan->tx_post_lock);
756 mutex_destroy(&chan->tx_rel_list.dl_mutex);
757 mutex_destroy(&chan->tx_wqe_list.dl_mutex);
758 mutex_destroy(&chan->rx_free_list.dl_mutex);
759 mutex_destroy(&chan->rx_wqe_list.dl_mutex);
760 kmem_free(chan, sizeof (ibd_rc_chan_t));
761 return (result);
762 }
763
764 static void
765 ibd_rc_free_chan(ibd_rc_chan_t *chan)
766 {
767 ibt_status_t ret;
768
769 /* DPRINT(30, "ibd_rc_free_chan: chan=%p", chan); */
770
771 if (chan->chan_hdl != NULL) {
772 ret = ibt_free_channel(chan->chan_hdl);
773 if (ret != IBT_SUCCESS) {
774 DPRINT(40, "ib_rc_free_chan: ibt_free_channel failed, "
775 "chan=%p, returned: %d", chan, ret);
776 return;
777 }
778 chan->chan_hdl = NULL;
779 }
780
781 if (chan->rcq_hdl != NULL) {
782 ret = ibt_free_cq(chan->rcq_hdl);
783 if (ret != IBT_SUCCESS) {
784 DPRINT(40, "ib_rc_free_chan: ibt_free_cq(rcq) failed, "
785 "chan=%p, returned: %d", chan, ret);
786 return;
787 }
788 chan->rcq_hdl = NULL;
789 }
790
791 if (chan->scq_hdl != NULL) {
792 ret = ibt_free_cq(chan->scq_hdl);
793 if (ret != IBT_SUCCESS) {
794 DPRINT(40, "ib_rc_free_chan: ibt_free_cq(scq) failed, "
795 "chan=%p, returned: %d", chan, ret);
796 return;
797 }
798 chan->scq_hdl = NULL;
799 }
800
801 /* Free buffers */
802 if (chan->is_tx_chan) {
803 ibd_rc_fini_txlist(chan);
804 if (ibd_rc_tx_softintr == 1) {
805 ddi_remove_softintr(chan->scq_softintr);
806 }
807 atomic_dec_32(&chan->state->rc_num_tx_chan);
808 } else {
809 if (!chan->state->rc_enable_srq) {
810 ibd_rc_fini_rxlist(chan);
811 }
812 atomic_dec_32(&chan->state->rc_num_rx_chan);
813 }
814
815 mutex_destroy(&chan->tx_poll_lock);
816 mutex_destroy(&chan->tx_post_lock);
817 mutex_destroy(&chan->tx_rel_list.dl_mutex);
818 mutex_destroy(&chan->tx_wqe_list.dl_mutex);
819 mutex_destroy(&chan->rx_free_list.dl_mutex);
820 mutex_destroy(&chan->rx_wqe_list.dl_mutex);
821
822 /*
823 * If it is a passive channel, must make sure it has been removed
824 * from chan->state->rc_pass_chan_list
825 */
826 kmem_free(chan, sizeof (ibd_rc_chan_t));
827 }
828
829 /* Add a RC channel */
830 static inline void
831 ibd_rc_add_to_chan_list(ibd_rc_chan_list_t *list, ibd_rc_chan_t *chan)
832 {
833 mutex_enter(&list->chan_list_mutex);
834 if (list->chan_list == NULL) {
835 list->chan_list = chan;
836 chan->next = NULL;
837 } else {
838 chan->next = list->chan_list;
839 list->chan_list = chan;
840 }
841 mutex_exit(&list->chan_list_mutex);
842 }
843
844 static boolean_t
845 ibd_rc_re_add_to_pas_chan_list(ibd_rc_chan_t *chan)
846 {
847 ibd_state_t *state = chan->state;
848
849 mutex_enter(&state->rc_pass_chan_list.chan_list_mutex);
850 if ((state->id_mac_state & IBD_DRV_STARTED) == 0) {
851 mutex_exit(&state->rc_pass_chan_list.chan_list_mutex);
852 return (B_FALSE);
853 } else {
854 if (state->rc_pass_chan_list.chan_list == NULL) {
855 state->rc_pass_chan_list.chan_list = chan;
856 chan->next = NULL;
857 } else {
858 chan->next = state->rc_pass_chan_list.chan_list;
859 state->rc_pass_chan_list.chan_list = chan;
860 }
861 mutex_exit(&state->rc_pass_chan_list.chan_list_mutex);
862 return (B_TRUE);
863 }
864 }
865
866 /* Remove a RC channel */
867 static inline ibd_rc_chan_t *
868 ibd_rc_rm_from_chan_list(ibd_rc_chan_list_t *list, ibd_rc_chan_t *chan)
869 {
870 ibd_rc_chan_t *pre_chan;
871
872 mutex_enter(&list->chan_list_mutex);
873 if (list->chan_list == chan) {
874 DPRINT(30, "ibd_rc_rm_from_chan_list(first): found chan(%p)"
875 " in chan_list", chan);
876 list->chan_list = chan->next;
877 } else {
878 pre_chan = list->chan_list;
879 while (pre_chan != NULL) {
880 if (pre_chan->next == chan) {
881 DPRINT(30, "ibd_rc_rm_from_chan_list"
882 "(middle): found chan(%p)", chan);
883 pre_chan->next = chan->next;
884 break;
885 }
886 pre_chan = pre_chan->next;
887 }
888 if (pre_chan == NULL)
889 chan = NULL;
890 }
891 mutex_exit(&list->chan_list_mutex);
892 return (chan);
893 }
894
895 static inline ibd_rc_chan_t *
896 ibd_rc_rm_header_chan_list(ibd_rc_chan_list_t *list)
897 {
898 ibd_rc_chan_t *rc_chan;
899
900 mutex_enter(&list->chan_list_mutex);
901 rc_chan = list->chan_list;
902 if (rc_chan != NULL) {
903 list->chan_list = rc_chan->next;
904 }
905 mutex_exit(&list->chan_list_mutex);
906 return (rc_chan);
907 }
908
909 static int
910 ibd_rc_alloc_srq_copybufs(ibd_state_t *state)
911 {
912 ibt_mr_attr_t mem_attr;
913 uint_t rc_rx_bufs_sz;
914
915 /*
916 * Allocate one big chunk for all regular rx copy bufs
917 */
918 rc_rx_bufs_sz = (state->rc_mtu + IPOIB_GRH_SIZE) * state->rc_srq_size;
919
920 state->rc_srq_rx_bufs = kmem_zalloc(rc_rx_bufs_sz, KM_SLEEP);
921
922 state->rc_srq_rwqes = kmem_zalloc(state->rc_srq_size *
923 sizeof (ibd_rwqe_t), KM_SLEEP);
924
925 /*
926 * Do one memory registration on the entire rxbuf area
927 */
928 mem_attr.mr_vaddr = (uint64_t)(uintptr_t)state->rc_srq_rx_bufs;
929 mem_attr.mr_len = rc_rx_bufs_sz;
930 mem_attr.mr_as = NULL;
931 mem_attr.mr_flags = IBT_MR_SLEEP | IBT_MR_ENABLE_LOCAL_WRITE;
932 if (ibt_register_mr(state->id_hca_hdl, state->id_pd_hdl, &mem_attr,
933 &state->rc_srq_rx_mr_hdl, &state->rc_srq_rx_mr_desc)
934 != IBT_SUCCESS) {
935 DPRINT(40, "ibd_rc_alloc_srq_copybufs: ibt_register_mr() "
936 "failed");
937 kmem_free(state->rc_srq_rwqes,
938 state->rc_srq_size * sizeof (ibd_rwqe_t));
939 kmem_free(state->rc_srq_rx_bufs, rc_rx_bufs_sz);
940 state->rc_srq_rx_bufs = NULL;
941 state->rc_srq_rwqes = NULL;
942 return (DDI_FAILURE);
943 }
944
945 return (DDI_SUCCESS);
946 }
947
948 static void
949 ibd_rc_free_srq_copybufs(ibd_state_t *state)
950 {
951 uint_t rc_rx_buf_sz;
952
953 /*
954 * Don't change the value of state->rc_mtu at the period from call
955 * ibd_rc_alloc_srq_copybufs() to call ibd_rc_free_srq_copybufs().
956 */
957 rc_rx_buf_sz = state->rc_mtu + IPOIB_GRH_SIZE;
958
959 /*
960 * Unregister rxbuf mr
961 */
962 if (ibt_deregister_mr(state->id_hca_hdl,
963 state->rc_srq_rx_mr_hdl) != IBT_SUCCESS) {
964 DPRINT(40, "ibd_rc_free_srq_copybufs: ibt_deregister_mr()"
965 " failed");
966 }
967 state->rc_srq_rx_mr_hdl = NULL;
968
969 /*
970 * Free rxbuf memory
971 */
972 kmem_free(state->rc_srq_rwqes,
973 state->rc_srq_size * sizeof (ibd_rwqe_t));
974 kmem_free(state->rc_srq_rx_bufs, state->rc_srq_size * rc_rx_buf_sz);
975 state->rc_srq_rwqes = NULL;
976 state->rc_srq_rx_bufs = NULL;
977 }
978
979 /*
980 * Allocate and post a certain number of SRQ receive buffers and WRs.
981 */
982 int
983 ibd_rc_init_srq_list(ibd_state_t *state)
984 {
985 ibd_rwqe_t *rwqe;
986 ibt_lkey_t lkey;
987 int i;
988 uint_t len;
989 uint8_t *bufaddr;
990 ibt_srq_sizes_t srq_sizes;
991 ibt_srq_sizes_t srq_real_sizes;
992 ibt_status_t ret;
993
994 srq_sizes.srq_sgl_sz = 1;
995 srq_sizes.srq_wr_sz = state->id_rc_num_srq;
996 ret = ibt_alloc_srq(state->id_hca_hdl, IBT_SRQ_NO_FLAGS,
997 state->id_pd_hdl, &srq_sizes, &state->rc_srq_hdl, &srq_real_sizes);
998 if (ret != IBT_SUCCESS) {
999 /*
1000 * The following code is for CR 6932460 (can't configure ibd
1001 * interface on 32 bits x86 systems). 32 bits x86 system has
1002 * less memory resource than 64 bits x86 system. If current
1003 * resource request can't be satisfied, we request less
1004 * resource here.
1005 */
1006 len = state->id_rc_num_srq;
1007 while ((ret == IBT_HCA_WR_EXCEEDED) &&
1008 (len >= 2 * IBD_RC_MIN_CQ_SIZE)) {
1009 len = len/2;
1010 srq_sizes.srq_sgl_sz = 1;
1011 srq_sizes.srq_wr_sz = len;
1012 ret = ibt_alloc_srq(state->id_hca_hdl,
1013 IBT_SRQ_NO_FLAGS, state->id_pd_hdl, &srq_sizes,
1014 &state->rc_srq_hdl, &srq_real_sizes);
1015 }
1016 if (ret != IBT_SUCCESS) {
1017 DPRINT(10, "ibd_rc_init_srq_list: ibt_alloc_srq failed."
1018 "req_sgl_sz=%d, req_wr_sz=0x%x, final_req_wr_sz="
1019 "0x%x, ret=%d", srq_sizes.srq_sgl_sz,
1020 srq_sizes.srq_wr_sz, len, ret);
1021 return (DDI_FAILURE);
1022 }
1023 state->id_rc_num_srq = len;
1024 state->id_rc_num_rwqe = state->id_rc_num_srq + 1;
1025 }
1026
1027 state->rc_srq_size = srq_real_sizes.srq_wr_sz;
1028 if (ibd_rc_alloc_srq_copybufs(state) != DDI_SUCCESS) {
1029 ret = ibt_free_srq(state->rc_srq_hdl);
1030 if (ret != IBT_SUCCESS) {
1031 ibd_print_warn(state, "ibd_rc_init_srq_list: "
1032 "ibt_free_srq fail, ret=%d", ret);
1033 }
1034 return (DDI_FAILURE);
1035 }
1036
1037 /*
1038 * Allocate and setup the rwqe list
1039 */
1040 lkey = state->rc_srq_rx_mr_desc.md_lkey;
1041 rwqe = state->rc_srq_rwqes;
1042 bufaddr = state->rc_srq_rx_bufs;
1043 len = state->rc_mtu + IPOIB_GRH_SIZE;
1044 state->rc_srq_rwqe_list.dl_cnt = 0;
1045 state->rc_srq_rwqe_list.dl_bufs_outstanding = 0;
1046 for (i = 0; i < state->rc_srq_size; i++, rwqe++, bufaddr += len) {
1047 rwqe->w_state = state;
1048 rwqe->w_freeing_wqe = B_FALSE;
1049 rwqe->w_freemsg_cb.free_func = ibd_rc_srq_freemsg_cb;
1050 rwqe->w_freemsg_cb.free_arg = (char *)rwqe;
1051 rwqe->rwqe_copybuf.ic_bufaddr = bufaddr;
1052
1053 if ((rwqe->rwqe_im_mblk = desballoc(bufaddr, len, 0,
1054 &rwqe->w_freemsg_cb)) == NULL) {
1055 DPRINT(40, "ibd_rc_init_srq_list : desballoc() failed");
1056 rwqe->rwqe_copybuf.ic_bufaddr = NULL;
1057 if (atomic_dec_32_nv(&state->id_running) != 0) {
1058 cmn_err(CE_WARN, "ibd_rc_init_srq_list: "
1059 "id_running was not 1\n");
1060 }
1061 ibd_rc_fini_srq_list(state);
1062 atomic_inc_32(&state->id_running);
1063 return (DDI_FAILURE);
1064 }
1065
1066 rwqe->rwqe_copybuf.ic_sgl.ds_key = lkey;
1067 /* Leave IPOIB_GRH_SIZE space */
1068 rwqe->rwqe_copybuf.ic_sgl.ds_va =
1069 (ib_vaddr_t)(uintptr_t)(bufaddr + IPOIB_GRH_SIZE);
1070 rwqe->rwqe_copybuf.ic_sgl.ds_len = state->rc_mtu;
1071 rwqe->w_rwr.wr_id = (ibt_wrid_t)(uintptr_t)rwqe;
1072 rwqe->w_rwr.wr_nds = 1;
1073 rwqe->w_rwr.wr_sgl = &rwqe->rwqe_copybuf.ic_sgl;
1074 (void) ibd_rc_post_srq(state, rwqe);
1075 }
1076
1077 mutex_enter(&state->rc_srq_free_list.dl_mutex);
1078 state->rc_srq_free_list.dl_head = NULL;
1079 state->rc_srq_free_list.dl_cnt = 0;
1080 mutex_exit(&state->rc_srq_free_list.dl_mutex);
1081
1082 return (DDI_SUCCESS);
1083 }
1084
1085 /*
1086 * Free the statically allocated Rx buffer list for SRQ.
1087 */
1088 void
1089 ibd_rc_fini_srq_list(ibd_state_t *state)
1090 {
1091 ibd_rwqe_t *rwqe;
1092 int i;
1093 ibt_status_t ret;
1094
1095 ASSERT(state->id_running == 0);
1096 ret = ibt_free_srq(state->rc_srq_hdl);
1097 if (ret != IBT_SUCCESS) {
1098 ibd_print_warn(state, "ibd_rc_fini_srq_list: "
1099 "ibt_free_srq fail, ret=%d", ret);
1100 }
1101
1102 mutex_enter(&state->rc_srq_rwqe_list.dl_mutex);
1103 rwqe = state->rc_srq_rwqes;
1104 for (i = 0; i < state->rc_srq_size; i++, rwqe++) {
1105 if (rwqe->rwqe_im_mblk != NULL) {
1106 rwqe->w_freeing_wqe = B_TRUE;
1107 freemsg(rwqe->rwqe_im_mblk);
1108 }
1109 }
1110 mutex_exit(&state->rc_srq_rwqe_list.dl_mutex);
1111
1112 ibd_rc_free_srq_copybufs(state);
1113 }
1114
1115 /* Repost the elements in state->ib_rc_free_list */
1116 int
1117 ibd_rc_repost_srq_free_list(ibd_state_t *state)
1118 {
1119 ibd_rwqe_t *rwqe;
1120 ibd_wqe_t *list;
1121 uint_t len;
1122
1123 mutex_enter(&state->rc_srq_free_list.dl_mutex);
1124 if (state->rc_srq_free_list.dl_head != NULL) {
1125 /* repost them */
1126 len = state->rc_mtu + IPOIB_GRH_SIZE;
1127 list = state->rc_srq_free_list.dl_head;
1128 state->rc_srq_free_list.dl_head = NULL;
1129 state->rc_srq_free_list.dl_cnt = 0;
1130 mutex_exit(&state->rc_srq_free_list.dl_mutex);
1131 while (list != NULL) {
1132 rwqe = WQE_TO_RWQE(list);
1133 if ((rwqe->rwqe_im_mblk == NULL) &&
1134 ((rwqe->rwqe_im_mblk = desballoc(
1135 rwqe->rwqe_copybuf.ic_bufaddr, len, 0,
1136 &rwqe->w_freemsg_cb)) == NULL)) {
1137 DPRINT(40, "ibd_rc_repost_srq_free_list: "
1138 "failed in desballoc()");
1139 do {
1140 ibd_rc_srq_free_rwqe(state, rwqe);
1141 list = list->w_next;
1142 rwqe = WQE_TO_RWQE(list);
1143 } while (list != NULL);
1144 return (DDI_FAILURE);
1145 }
1146 if (ibd_rc_post_srq(state, rwqe) == DDI_FAILURE) {
1147 ibd_rc_srq_free_rwqe(state, rwqe);
1148 }
1149 list = list->w_next;
1150 }
1151 return (DDI_SUCCESS);
1152 }
1153 mutex_exit(&state->rc_srq_free_list.dl_mutex);
1154 return (DDI_SUCCESS);
1155 }
1156
1157 /*
1158 * Free an allocated recv wqe.
1159 */
1160 static void
1161 ibd_rc_srq_free_rwqe(ibd_state_t *state, ibd_rwqe_t *rwqe)
1162 {
1163 /*
1164 * desballoc() failed (no memory) or the posting of rwqe failed.
1165 *
1166 * This rwqe is placed on a free list so that it
1167 * can be reinstated in future.
1168 *
1169 * NOTE: no code currently exists to reinstate
1170 * these "lost" rwqes.
1171 */
1172 mutex_enter(&state->rc_srq_free_list.dl_mutex);
1173 state->rc_srq_free_list.dl_cnt++;
1174 rwqe->rwqe_next = state->rc_srq_free_list.dl_head;
1175 state->rc_srq_free_list.dl_head = RWQE_TO_WQE(rwqe);
1176 mutex_exit(&state->rc_srq_free_list.dl_mutex);
1177 }
1178
1179 static void
1180 ibd_rc_srq_freemsg_cb(char *arg)
1181 {
1182 ibd_rwqe_t *rwqe = (ibd_rwqe_t *)arg;
1183 ibd_state_t *state = rwqe->w_state;
1184
1185 ASSERT(state->rc_enable_srq);
1186
1187 /*
1188 * If the driver is stopped, just free the rwqe.
1189 */
1190 if (atomic_add_32_nv(&state->id_running, 0) == 0) {
1191 if (!rwqe->w_freeing_wqe) {
1192 atomic_dec_32(
1193 &state->rc_srq_rwqe_list.dl_bufs_outstanding);
1194 DPRINT(6, "ibd_rc_srq_freemsg_cb: wqe being freed");
1195 rwqe->rwqe_im_mblk = NULL;
1196 ibd_rc_srq_free_rwqe(state, rwqe);
1197 }
1198 return;
1199 }
1200
1201 atomic_dec_32(&state->rc_srq_rwqe_list.dl_bufs_outstanding);
1202
1203 ASSERT(state->rc_srq_rwqe_list.dl_cnt < state->rc_srq_size);
1204 ASSERT(!rwqe->w_freeing_wqe);
1205
1206 /*
1207 * Upper layer has released held mblk, so we have
1208 * no more use for keeping the old pointer in
1209 * our rwqe.
1210 */
1211 rwqe->rwqe_im_mblk = desballoc(rwqe->rwqe_copybuf.ic_bufaddr,
1212 state->rc_mtu + IPOIB_GRH_SIZE, 0, &rwqe->w_freemsg_cb);
1213 if (rwqe->rwqe_im_mblk == NULL) {
1214 DPRINT(40, "ibd_rc_srq_freemsg_cb: desballoc failed");
1215 ibd_rc_srq_free_rwqe(state, rwqe);
1216 return;
1217 }
1218
1219 if (ibd_rc_post_srq(state, rwqe) == DDI_FAILURE) {
1220 ibd_print_warn(state, "ibd_rc_srq_freemsg_cb: ibd_rc_post_srq"
1221 " failed");
1222 ibd_rc_srq_free_rwqe(state, rwqe);
1223 return;
1224 }
1225 }
1226
1227 /*
1228 * Post a rwqe to the hardware and add it to the Rx list.
1229 */
1230 static int
1231 ibd_rc_post_srq(ibd_state_t *state, ibd_rwqe_t *rwqe)
1232 {
1233 /*
1234 * Here we should add dl_cnt before post recv, because
1235 * we would have to make sure dl_cnt is updated before
1236 * the corresponding ibd_rc_process_rx() is called.
1237 */
1238 ASSERT(state->rc_srq_rwqe_list.dl_cnt < state->rc_srq_size);
1239 atomic_add_32(&state->rc_srq_rwqe_list.dl_cnt, 1);
1240 if (ibt_post_srq(state->rc_srq_hdl, &rwqe->w_rwr, 1, NULL) !=
1241 IBT_SUCCESS) {
1242 atomic_dec_32(&state->rc_srq_rwqe_list.dl_cnt);
1243 DPRINT(40, "ibd_rc_post_srq : ibt_post_srq() failed");
1244 return (DDI_FAILURE);
1245 }
1246
1247 return (DDI_SUCCESS);
1248 }
1249
1250 /*
1251 * Post a rwqe to the hardware and add it to the Rx list.
1252 */
1253 static int
1254 ibd_rc_post_rwqe(ibd_rc_chan_t *chan, ibd_rwqe_t *rwqe)
1255 {
1256 /*
1257 * Here we should add dl_cnt before post recv, because we would
1258 * have to make sure dl_cnt has already updated before
1259 * corresponding ibd_rc_process_rx() is called.
1260 */
1261 atomic_add_32(&chan->rx_wqe_list.dl_cnt, 1);
1262 if (ibt_post_recv(chan->chan_hdl, &rwqe->w_rwr, 1, NULL) !=
1263 IBT_SUCCESS) {
1264 atomic_dec_32(&chan->rx_wqe_list.dl_cnt);
1265 DPRINT(40, "ibd_rc_post_rwqe : failed in ibt_post_recv()");
1266 return (DDI_FAILURE);
1267 }
1268 return (DDI_SUCCESS);
1269 }
1270
1271 static int
1272 ibd_rc_alloc_rx_copybufs(ibd_rc_chan_t *chan)
1273 {
1274 ibd_state_t *state = chan->state;
1275 ibt_mr_attr_t mem_attr;
1276 uint_t rc_rx_bufs_sz;
1277
1278 /*
1279 * Allocate one big chunk for all regular rx copy bufs
1280 */
1281 rc_rx_bufs_sz = (state->rc_mtu + IPOIB_GRH_SIZE) * chan->rcq_size;
1282
1283 chan->rx_bufs = kmem_zalloc(rc_rx_bufs_sz, KM_SLEEP);
1284
1285 chan->rx_rwqes = kmem_zalloc(chan->rcq_size *
1286 sizeof (ibd_rwqe_t), KM_SLEEP);
1287
1288 /*
1289 * Do one memory registration on the entire rxbuf area
1290 */
1291 mem_attr.mr_vaddr = (uint64_t)(uintptr_t)chan->rx_bufs;
1292 mem_attr.mr_len = rc_rx_bufs_sz;
1293 mem_attr.mr_as = NULL;
1294 mem_attr.mr_flags = IBT_MR_SLEEP | IBT_MR_ENABLE_LOCAL_WRITE;
1295 if (ibt_register_mr(state->id_hca_hdl, state->id_pd_hdl, &mem_attr,
1296 &chan->rx_mr_hdl, &chan->rx_mr_desc) != IBT_SUCCESS) {
1297 DPRINT(40, "ibd_rc_alloc_srq_copybufs: ibt_register_mr failed");
1298 kmem_free(chan->rx_rwqes, chan->rcq_size * sizeof (ibd_rwqe_t));
1299 kmem_free(chan->rx_bufs, rc_rx_bufs_sz);
1300 chan->rx_bufs = NULL;
1301 chan->rx_rwqes = NULL;
1302 return (DDI_FAILURE);
1303 }
1304
1305 return (DDI_SUCCESS);
1306 }
1307
1308 static void
1309 ibd_rc_free_rx_copybufs(ibd_rc_chan_t *chan)
1310 {
1311 ibd_state_t *state = chan->state;
1312 uint_t rc_rx_buf_sz;
1313
1314 ASSERT(!state->rc_enable_srq);
1315 ASSERT(chan->rx_rwqes != NULL);
1316 ASSERT(chan->rx_bufs != NULL);
1317
1318 /*
1319 * Don't change the value of state->rc_mtu at the period from call
1320 * ibd_rc_alloc_rx_copybufs() to call ibd_rc_free_rx_copybufs().
1321 */
1322 rc_rx_buf_sz = state->rc_mtu + IPOIB_GRH_SIZE;
1323
1324 /*
1325 * Unregister rxbuf mr
1326 */
1327 if (ibt_deregister_mr(state->id_hca_hdl,
1328 chan->rx_mr_hdl) != IBT_SUCCESS) {
1329 DPRINT(40, "ibd_rc_free_rx_copybufs: ibt_deregister_mr failed");
1330 }
1331 chan->rx_mr_hdl = NULL;
1332
1333 /*
1334 * Free rxbuf memory
1335 */
1336 kmem_free(chan->rx_rwqes, chan->rcq_size * sizeof (ibd_rwqe_t));
1337 chan->rx_rwqes = NULL;
1338
1339 kmem_free(chan->rx_bufs, chan->rcq_size * rc_rx_buf_sz);
1340 chan->rx_bufs = NULL;
1341 }
1342
1343 /*
1344 * Post a certain number of receive buffers and WRs on a RC channel.
1345 */
1346 static int
1347 ibd_rc_init_rxlist(ibd_rc_chan_t *chan)
1348 {
1349 ibd_state_t *state = chan->state;
1350 ibd_rwqe_t *rwqe;
1351 ibt_lkey_t lkey;
1352 int i;
1353 uint_t len;
1354 uint8_t *bufaddr;
1355
1356 ASSERT(!state->rc_enable_srq);
1357 if (ibd_rc_alloc_rx_copybufs(chan) != DDI_SUCCESS)
1358 return (DDI_FAILURE);
1359
1360 /*
1361 * Allocate and setup the rwqe list
1362 */
1363 lkey = chan->rx_mr_desc.md_lkey;
1364 rwqe = chan->rx_rwqes;
1365 bufaddr = chan->rx_bufs;
1366 len = state->rc_mtu + IPOIB_GRH_SIZE;
1367 for (i = 0; i < chan->rcq_size; i++, rwqe++, bufaddr += len) {
1368 rwqe->w_state = state;
1369 rwqe->w_chan = chan;
1370 rwqe->w_freeing_wqe = B_FALSE;
1371 rwqe->w_freemsg_cb.free_func = ibd_rc_freemsg_cb;
1372 rwqe->w_freemsg_cb.free_arg = (char *)rwqe;
1373 rwqe->rwqe_copybuf.ic_bufaddr = bufaddr;
1374
1375 if ((rwqe->rwqe_im_mblk = desballoc(bufaddr, len, 0,
1376 &rwqe->w_freemsg_cb)) == NULL) {
1377 DPRINT(40, "ibd_rc_init_srq_list: desballoc() failed");
1378 rwqe->rwqe_copybuf.ic_bufaddr = NULL;
1379 ibd_rc_fini_rxlist(chan);
1380 return (DDI_FAILURE);
1381 }
1382
1383 rwqe->rwqe_copybuf.ic_sgl.ds_key = lkey;
1384 rwqe->rwqe_copybuf.ic_sgl.ds_va =
1385 (ib_vaddr_t)(uintptr_t)(bufaddr + IPOIB_GRH_SIZE);
1386 rwqe->rwqe_copybuf.ic_sgl.ds_len = state->rc_mtu;
1387 rwqe->w_rwr.wr_id = (ibt_wrid_t)(uintptr_t)rwqe;
1388 rwqe->w_rwr.wr_nds = 1;
1389 rwqe->w_rwr.wr_sgl = &rwqe->rwqe_copybuf.ic_sgl;
1390 (void) ibd_rc_post_rwqe(chan, rwqe);
1391 }
1392
1393 return (DDI_SUCCESS);
1394 }
1395
1396 /*
1397 * Free the statically allocated Rx buffer list for SRQ.
1398 */
1399 static void
1400 ibd_rc_fini_rxlist(ibd_rc_chan_t *chan)
1401 {
1402 ibd_rwqe_t *rwqe;
1403 int i;
1404
1405 if (chan->rx_bufs == NULL) {
1406 DPRINT(40, "ibd_rc_fini_rxlist: empty chan->rx_bufs, quit");
1407 return;
1408 }
1409
1410 /* bufs_outstanding must be 0 */
1411 ASSERT((chan->rx_wqe_list.dl_head == NULL) ||
1412 (chan->rx_wqe_list.dl_bufs_outstanding == 0));
1413
1414 mutex_enter(&chan->rx_wqe_list.dl_mutex);
1415 rwqe = chan->rx_rwqes;
1416 for (i = 0; i < chan->rcq_size; i++, rwqe++) {
1417 if (rwqe->rwqe_im_mblk != NULL) {
1418 rwqe->w_freeing_wqe = B_TRUE;
1419 freemsg(rwqe->rwqe_im_mblk);
1420 }
1421 }
1422 mutex_exit(&chan->rx_wqe_list.dl_mutex);
1423
1424 ibd_rc_free_rx_copybufs(chan);
1425 }
1426
1427 /*
1428 * Free an allocated recv wqe.
1429 */
1430 static void
1431 ibd_rc_free_rwqe(ibd_rc_chan_t *chan, ibd_rwqe_t *rwqe)
1432 {
1433 /*
1434 * desballoc() failed (no memory) or the posting of rwqe failed.
1435 *
1436 * This rwqe is placed on a free list so that it
1437 * can be reinstated in future.
1438 *
1439 * NOTE: no code currently exists to reinstate
1440 * these "lost" rwqes.
1441 */
1442 mutex_enter(&chan->rx_free_list.dl_mutex);
1443 chan->rx_free_list.dl_cnt++;
1444 rwqe->rwqe_next = chan->rx_free_list.dl_head;
1445 chan->rx_free_list.dl_head = RWQE_TO_WQE(rwqe);
1446 mutex_exit(&chan->rx_free_list.dl_mutex);
1447 }
1448
1449 /*
1450 * Processing to be done after receipt of a packet; hand off to GLD
1451 * in the format expected by GLD.
1452 */
1453 static void
1454 ibd_rc_process_rx(ibd_rc_chan_t *chan, ibd_rwqe_t *rwqe, ibt_wc_t *wc)
1455 {
1456 ibd_state_t *state = chan->state;
1457 ib_header_info_t *phdr;
1458 ipoib_hdr_t *ipibp;
1459 mblk_t *mp;
1460 mblk_t *mpc;
1461 int rxcnt;
1462 ip6_t *ip6h;
1463 int len;
1464
1465 /*
1466 * Track number handed to upper layer, and number still
1467 * available to receive packets.
1468 */
1469 if (state->rc_enable_srq) {
1470 rxcnt = atomic_dec_32_nv(&state->rc_srq_rwqe_list.dl_cnt);
1471 } else {
1472 rxcnt = atomic_dec_32_nv(&chan->rx_wqe_list.dl_cnt);
1473 }
1474
1475 /*
1476 * It can not be a IBA multicast packet.
1477 */
1478 ASSERT(!wc->wc_flags & IBT_WC_GRH_PRESENT);
1479
1480 /* For the connection reaper routine ibd_rc_conn_timeout_call() */
1481 chan->is_used = B_TRUE;
1482
1483 #ifdef DEBUG
1484 if (rxcnt < state->id_rc_rx_rwqe_thresh) {
1485 state->rc_rwqe_short++;
1486 }
1487 #endif
1488
1489 /*
1490 * Possibly replenish the Rx pool if needed.
1491 */
1492 if ((rxcnt >= state->id_rc_rx_rwqe_thresh) &&
1493 (wc->wc_bytes_xfer > state->id_rc_rx_copy_thresh)) {
1494 atomic_add_64(&state->rc_rcv_trans_byte, wc->wc_bytes_xfer);
1495 atomic_inc_64(&state->rc_rcv_trans_pkt);
1496
1497 /*
1498 * Record how many rwqe has been occupied by upper
1499 * network layer
1500 */
1501 if (state->rc_enable_srq) {
1502 atomic_add_32(&state->rc_srq_rwqe_list.
1503 dl_bufs_outstanding, 1);
1504 } else {
1505 atomic_add_32(&chan->rx_wqe_list.
1506 dl_bufs_outstanding, 1);
1507 }
1508 mp = rwqe->rwqe_im_mblk;
1509 } else {
1510 atomic_add_64(&state->rc_rcv_copy_byte, wc->wc_bytes_xfer);
1511 atomic_inc_64(&state->rc_rcv_copy_pkt);
1512
1513 if ((mp = allocb(wc->wc_bytes_xfer + IPOIB_GRH_SIZE,
1514 BPRI_HI)) == NULL) { /* no memory */
1515 DPRINT(40, "ibd_rc_process_rx: allocb() failed");
1516 state->rc_rcv_alloc_fail++;
1517 if (state->rc_enable_srq) {
1518 if (ibd_rc_post_srq(state, rwqe) ==
1519 DDI_FAILURE) {
1520 ibd_rc_srq_free_rwqe(state, rwqe);
1521 }
1522 } else {
1523 if (ibd_rc_post_rwqe(chan, rwqe) ==
1524 DDI_FAILURE) {
1525 ibd_rc_free_rwqe(chan, rwqe);
1526 }
1527 }
1528 return;
1529 }
1530
1531 bcopy(rwqe->rwqe_im_mblk->b_rptr + IPOIB_GRH_SIZE,
1532 mp->b_wptr + IPOIB_GRH_SIZE, wc->wc_bytes_xfer);
1533
1534 if (state->rc_enable_srq) {
1535 if (ibd_rc_post_srq(state, rwqe) == DDI_FAILURE) {
1536 ibd_rc_srq_free_rwqe(state, rwqe);
1537 }
1538 } else {
1539 if (ibd_rc_post_rwqe(chan, rwqe) == DDI_FAILURE) {
1540 ibd_rc_free_rwqe(chan, rwqe);
1541 }
1542 }
1543 }
1544
1545 ipibp = (ipoib_hdr_t *)((uchar_t *)mp->b_rptr + IPOIB_GRH_SIZE);
1546 if (ntohs(ipibp->ipoib_type) == ETHERTYPE_IPV6) {
1547 ip6h = (ip6_t *)((uchar_t *)ipibp + sizeof (ipoib_hdr_t));
1548 len = ntohs(ip6h->ip6_plen);
1549 if (ip6h->ip6_nxt == IPPROTO_ICMPV6) {
1550 /* LINTED: E_CONSTANT_CONDITION */
1551 IBD_PAD_NSNA(ip6h, len, IBD_RECV);
1552 }
1553 }
1554
1555 phdr = (ib_header_info_t *)mp->b_rptr;
1556 phdr->ib_grh.ipoib_vertcflow = 0;
1557 ovbcopy(&state->id_macaddr, &phdr->ib_dst,
1558 sizeof (ipoib_mac_t));
1559 mp->b_wptr = mp->b_rptr + wc->wc_bytes_xfer+ IPOIB_GRH_SIZE;
1560
1561 /*
1562 * Can RC mode in IB guarantee its checksum correctness?
1563 *
1564 * (void) hcksum_assoc(mp, NULL, NULL, 0, 0, 0, 0,
1565 * HCK_FULLCKSUM | HCK_FULLCKSUM_OK, 0);
1566 */
1567
1568 /*
1569 * Make sure this is NULL or we're in trouble.
1570 */
1571 if (mp->b_next != NULL) {
1572 ibd_print_warn(state,
1573 "ibd_rc_process_rx: got duplicate mp from rcq?");
1574 mp->b_next = NULL;
1575 }
1576
1577 /*
1578 * Add this mp to the list of processed mp's to send to
1579 * the nw layer
1580 */
1581 if (state->rc_enable_srq) {
1582 mutex_enter(&state->rc_rx_lock);
1583 if (state->rc_rx_mp) {
1584 ASSERT(state->rc_rx_mp_tail != NULL);
1585 state->rc_rx_mp_tail->b_next = mp;
1586 } else {
1587 ASSERT(state->rc_rx_mp_tail == NULL);
1588 state->rc_rx_mp = mp;
1589 }
1590
1591 state->rc_rx_mp_tail = mp;
1592 state->rc_rx_mp_len++;
1593
1594 if (state->rc_rx_mp_len >= IBD_MAX_RX_MP_LEN) {
1595 mpc = state->rc_rx_mp;
1596
1597 state->rc_rx_mp = NULL;
1598 state->rc_rx_mp_tail = NULL;
1599 state->rc_rx_mp_len = 0;
1600 mutex_exit(&state->rc_rx_lock);
1601 mac_rx(state->id_mh, NULL, mpc);
1602 } else {
1603 mutex_exit(&state->rc_rx_lock);
1604 }
1605 } else {
1606 mutex_enter(&chan->rx_lock);
1607 if (chan->rx_mp) {
1608 ASSERT(chan->rx_mp_tail != NULL);
1609 chan->rx_mp_tail->b_next = mp;
1610 } else {
1611 ASSERT(chan->rx_mp_tail == NULL);
1612 chan->rx_mp = mp;
1613 }
1614
1615 chan->rx_mp_tail = mp;
1616 chan->rx_mp_len++;
1617
1618 if (chan->rx_mp_len >= IBD_MAX_RX_MP_LEN) {
1619 mpc = chan->rx_mp;
1620
1621 chan->rx_mp = NULL;
1622 chan->rx_mp_tail = NULL;
1623 chan->rx_mp_len = 0;
1624 mutex_exit(&chan->rx_lock);
1625 mac_rx(state->id_mh, NULL, mpc);
1626 } else {
1627 mutex_exit(&chan->rx_lock);
1628 }
1629 }
1630 }
1631
1632 /*
1633 * Callback code invoked from STREAMs when the recv data buffer is free
1634 * for recycling.
1635 */
1636 static void
1637 ibd_rc_freemsg_cb(char *arg)
1638 {
1639 ibd_rwqe_t *rwqe = (ibd_rwqe_t *)arg;
1640 ibd_rc_chan_t *chan = rwqe->w_chan;
1641 ibd_state_t *state = rwqe->w_state;
1642
1643 /*
1644 * If the wqe is being destructed, do not attempt recycling.
1645 */
1646 if (rwqe->w_freeing_wqe == B_TRUE) {
1647 return;
1648 }
1649
1650 ASSERT(!state->rc_enable_srq);
1651 ASSERT(chan->rx_wqe_list.dl_cnt < chan->rcq_size);
1652
1653 rwqe->rwqe_im_mblk = desballoc(rwqe->rwqe_copybuf.ic_bufaddr,
1654 state->rc_mtu + IPOIB_GRH_SIZE, 0, &rwqe->w_freemsg_cb);
1655 if (rwqe->rwqe_im_mblk == NULL) {
1656 DPRINT(40, "ibd_rc_freemsg_cb: desballoc() failed");
1657 ibd_rc_free_rwqe(chan, rwqe);
1658 return;
1659 }
1660
1661 /*
1662 * Post back to h/w. We could actually have more than
1663 * id_num_rwqe WQEs on the list if there were multiple
1664 * ibd_freemsg_cb() calls outstanding (since the lock is
1665 * not held the entire time). This will start getting
1666 * corrected over subsequent ibd_freemsg_cb() calls.
1667 */
1668 if (ibd_rc_post_rwqe(chan, rwqe) == DDI_FAILURE) {
1669 ibd_rc_free_rwqe(chan, rwqe);
1670 return;
1671 }
1672 atomic_add_32(&chan->rx_wqe_list.dl_bufs_outstanding, -1);
1673 }
1674
1675 /*
1676 * Common code for interrupt handling as well as for polling
1677 * for all completed wqe's while detaching.
1678 */
1679 static void
1680 ibd_rc_poll_rcq(ibd_rc_chan_t *chan, ibt_cq_hdl_t cq_hdl)
1681 {
1682 ibd_wqe_t *wqe;
1683 ibt_wc_t *wc, *wcs;
1684 uint_t numwcs, real_numwcs;
1685 int i;
1686
1687 wcs = chan->rx_wc;
1688 numwcs = IBD_RC_MAX_CQ_WC;
1689
1690 while (ibt_poll_cq(cq_hdl, wcs, numwcs, &real_numwcs) == IBT_SUCCESS) {
1691 for (i = 0, wc = wcs; i < real_numwcs; i++, wc++) {
1692 wqe = (ibd_wqe_t *)(uintptr_t)wc->wc_id;
1693 if (wc->wc_status != IBT_WC_SUCCESS) {
1694 chan->state->rc_rcq_err++;
1695 /*
1696 * Channel being torn down.
1697 */
1698 DPRINT(40, "ibd_rc_poll_rcq: wc_status(%d) != "
1699 "SUCC, chan=%p", wc->wc_status, chan);
1700 if (wc->wc_status == IBT_WC_WR_FLUSHED_ERR) {
1701 /*
1702 * Do not invoke Rx handler because
1703 * it might add buffers to the Rx pool
1704 * when we are trying to deinitialize.
1705 */
1706 continue;
1707 }
1708 }
1709 ibd_rc_process_rx(chan, WQE_TO_RWQE(wqe), wc);
1710 }
1711 }
1712 }
1713
1714 /* Receive CQ handler */
1715 /* ARGSUSED */
1716 static void
1717 ibd_rc_rcq_handler(ibt_cq_hdl_t cq_hdl, void *arg)
1718 {
1719 ibd_rc_chan_t *chan = (ibd_rc_chan_t *)arg;
1720 ibd_state_t *state = chan->state;
1721
1722 atomic_inc_32(&chan->rcq_invoking);
1723 ASSERT(chan->chan_state == IBD_RC_STATE_PAS_ESTAB);
1724
1725 /*
1726 * Poll for completed entries; the CQ will not interrupt any
1727 * more for incoming (or transmitted) packets.
1728 */
1729 ibd_rc_poll_rcq(chan, chan->rcq_hdl);
1730
1731 /*
1732 * Now enable CQ notifications; all packets that arrive now
1733 * (or complete transmission) will cause new interrupts.
1734 */
1735 if (ibt_enable_cq_notify(chan->rcq_hdl, IBT_NEXT_COMPLETION) !=
1736 IBT_SUCCESS) {
1737 /*
1738 * We do not expect a failure here.
1739 */
1740 DPRINT(40, "ibd_rc_rcq_handler: ibt_enable_cq_notify() failed");
1741 }
1742
1743 /*
1744 * Repoll to catch all packets that might have arrived after
1745 * we finished the first poll loop and before interrupts got
1746 * armed.
1747 */
1748 ibd_rc_poll_rcq(chan, chan->rcq_hdl);
1749
1750 if (state->rc_enable_srq) {
1751 mutex_enter(&state->rc_rx_lock);
1752
1753 if (state->rc_rx_mp != NULL) {
1754 mblk_t *mpc;
1755 mpc = state->rc_rx_mp;
1756
1757 state->rc_rx_mp = NULL;
1758 state->rc_rx_mp_tail = NULL;
1759 state->rc_rx_mp_len = 0;
1760
1761 mutex_exit(&state->rc_rx_lock);
1762 mac_rx(state->id_mh, NULL, mpc);
1763 } else {
1764 mutex_exit(&state->rc_rx_lock);
1765 }
1766 } else {
1767 mutex_enter(&chan->rx_lock);
1768
1769 if (chan->rx_mp != NULL) {
1770 mblk_t *mpc;
1771 mpc = chan->rx_mp;
1772
1773 chan->rx_mp = NULL;
1774 chan->rx_mp_tail = NULL;
1775 chan->rx_mp_len = 0;
1776
1777 mutex_exit(&chan->rx_lock);
1778 mac_rx(state->id_mh, NULL, mpc);
1779 } else {
1780 mutex_exit(&chan->rx_lock);
1781 }
1782 }
1783 atomic_dec_32(&chan->rcq_invoking);
1784 }
1785
1786 /*
1787 * Allocate the statically allocated Tx buffer list.
1788 */
1789 int
1790 ibd_rc_init_tx_largebuf_list(ibd_state_t *state)
1791 {
1792 ibd_rc_tx_largebuf_t *lbufp;
1793 ibd_rc_tx_largebuf_t *tail;
1794 uint8_t *memp;
1795 ibt_mr_attr_t mem_attr;
1796 uint32_t num_swqe;
1797 size_t mem_size;
1798 int i;
1799
1800 num_swqe = state->id_rc_num_swqe - 1;
1801
1802 /*
1803 * Allocate one big chunk for all Tx large copy bufs
1804 */
1805 /* Don't transfer IPOIB_GRH_SIZE bytes (40 bytes) */
1806 mem_size = num_swqe * state->rc_mtu;
1807 state->rc_tx_mr_bufs = kmem_zalloc(mem_size, KM_SLEEP);
1808
1809 mem_attr.mr_len = mem_size;
1810 mem_attr.mr_vaddr = (uint64_t)(uintptr_t)state->rc_tx_mr_bufs;
1811 mem_attr.mr_as = NULL;
1812 mem_attr.mr_flags = IBT_MR_SLEEP;
1813 if (ibt_register_mr(state->id_hca_hdl, state->id_pd_hdl, &mem_attr,
1814 &state->rc_tx_mr_hdl, &state->rc_tx_mr_desc) != IBT_SUCCESS) {
1815 DPRINT(40, "ibd_rc_init_tx_largebuf_list: ibt_register_mr "
1816 "failed");
1817 kmem_free(state->rc_tx_mr_bufs, mem_size);
1818 state->rc_tx_mr_bufs = NULL;
1819 return (DDI_FAILURE);
1820 }
1821
1822 state->rc_tx_largebuf_desc_base = kmem_zalloc(num_swqe *
1823 sizeof (ibd_rc_tx_largebuf_t), KM_SLEEP);
1824
1825 /*
1826 * Set up the buf chain
1827 */
1828 memp = state->rc_tx_mr_bufs;
1829 mutex_enter(&state->rc_tx_large_bufs_lock);
1830 lbufp = state->rc_tx_largebuf_desc_base;
1831 for (i = 0; i < num_swqe; i++) {
1832 lbufp->lb_buf = memp;
1833 lbufp->lb_next = lbufp + 1;
1834
1835 tail = lbufp;
1836
1837 memp += state->rc_mtu;
1838 lbufp++;
1839 }
1840 tail->lb_next = NULL;
1841
1842 /*
1843 * Set up the buffer information in ibd state
1844 */
1845 state->rc_tx_largebuf_free_head = state->rc_tx_largebuf_desc_base;
1846 state->rc_tx_largebuf_nfree = num_swqe;
1847 mutex_exit(&state->rc_tx_large_bufs_lock);
1848 return (DDI_SUCCESS);
1849 }
1850
1851 void
1852 ibd_rc_fini_tx_largebuf_list(ibd_state_t *state)
1853 {
1854 uint32_t num_swqe;
1855
1856 num_swqe = state->id_rc_num_swqe - 1;
1857
1858 if (ibt_deregister_mr(state->id_hca_hdl,
1859 state->rc_tx_mr_hdl) != IBT_SUCCESS) {
1860 DPRINT(40, "ibd_rc_fini_tx_largebuf_list: ibt_deregister_mr() "
1861 "failed");
1862 }
1863 state->rc_tx_mr_hdl = NULL;
1864
1865 kmem_free(state->rc_tx_mr_bufs, num_swqe * state->rc_mtu);
1866 state->rc_tx_mr_bufs = NULL;
1867
1868 kmem_free(state->rc_tx_largebuf_desc_base,
1869 num_swqe * sizeof (ibd_rc_tx_largebuf_t));
1870 state->rc_tx_largebuf_desc_base = NULL;
1871 }
1872
1873 static int
1874 ibd_rc_alloc_tx_copybufs(ibd_rc_chan_t *chan)
1875 {
1876 ibt_mr_attr_t mem_attr;
1877 ibd_state_t *state;
1878
1879 state = chan->state;
1880 ASSERT(state != NULL);
1881
1882 /*
1883 * Allocate one big chunk for all regular tx copy bufs
1884 */
1885 mem_attr.mr_len = chan->scq_size * state->id_rc_tx_copy_thresh;
1886
1887 chan->tx_mr_bufs = kmem_zalloc(mem_attr.mr_len, KM_SLEEP);
1888
1889 /*
1890 * Do one memory registration on the entire txbuf area
1891 */
1892 mem_attr.mr_vaddr = (uint64_t)(uintptr_t)chan->tx_mr_bufs;
1893 mem_attr.mr_as = NULL;
1894 mem_attr.mr_flags = IBT_MR_SLEEP;
1895 if (ibt_register_mr(state->id_hca_hdl, state->id_pd_hdl, &mem_attr,
1896 &chan->tx_mr_hdl, &chan->tx_mr_desc) != IBT_SUCCESS) {
1897 DPRINT(40, "ibd_rc_alloc_tx_copybufs: ibt_register_mr failed");
1898 ASSERT(mem_attr.mr_len ==
1899 chan->scq_size * state->id_rc_tx_copy_thresh);
1900 kmem_free(chan->tx_mr_bufs, mem_attr.mr_len);
1901 chan->tx_mr_bufs = NULL;
1902 return (DDI_FAILURE);
1903 }
1904
1905 return (DDI_SUCCESS);
1906 }
1907
1908 /*
1909 * Allocate the statically allocated Tx buffer list.
1910 */
1911 static int
1912 ibd_rc_init_txlist(ibd_rc_chan_t *chan)
1913 {
1914 ibd_swqe_t *swqe;
1915 int i;
1916 ibt_lkey_t lkey;
1917 ibd_state_t *state = chan->state;
1918
1919 if (ibd_rc_alloc_tx_copybufs(chan) != DDI_SUCCESS)
1920 return (DDI_FAILURE);
1921
1922 /*
1923 * Allocate and setup the swqe list
1924 */
1925 lkey = chan->tx_mr_desc.md_lkey;
1926 chan->tx_wqes = kmem_zalloc(chan->scq_size *
1927 sizeof (ibd_swqe_t), KM_SLEEP);
1928 swqe = chan->tx_wqes;
1929 for (i = 0; i < chan->scq_size; i++, swqe++) {
1930 swqe->swqe_next = NULL;
1931 swqe->swqe_im_mblk = NULL;
1932
1933 swqe->swqe_copybuf.ic_sgl.ds_key = lkey;
1934 swqe->swqe_copybuf.ic_sgl.ds_len = 0; /* set in send */
1935
1936 swqe->w_swr.wr_id = (ibt_wrid_t)(uintptr_t)swqe;
1937 swqe->w_swr.wr_flags = IBT_WR_SEND_SIGNAL;
1938 swqe->swqe_copybuf.ic_sgl.ds_va = (ib_vaddr_t)(uintptr_t)
1939 (chan->tx_mr_bufs + i * state->id_rc_tx_copy_thresh);
1940 swqe->w_swr.wr_trans = IBT_RC_SRV;
1941
1942 /* Add to list */
1943 mutex_enter(&chan->tx_wqe_list.dl_mutex);
1944 chan->tx_wqe_list.dl_cnt++;
1945 swqe->swqe_next = chan->tx_wqe_list.dl_head;
1946 chan->tx_wqe_list.dl_head = SWQE_TO_WQE(swqe);
1947 mutex_exit(&chan->tx_wqe_list.dl_mutex);
1948 }
1949
1950 return (DDI_SUCCESS);
1951 }
1952
1953 /*
1954 * Free the statically allocated Tx buffer list.
1955 */
1956 static void
1957 ibd_rc_fini_txlist(ibd_rc_chan_t *chan)
1958 {
1959 ibd_state_t *state = chan->state;
1960 if (chan->tx_mr_hdl != NULL) {
1961 if (ibt_deregister_mr(chan->state->id_hca_hdl,
1962 chan->tx_mr_hdl) != IBT_SUCCESS) {
1963 DPRINT(40, "ibd_rc_fini_txlist: ibt_deregister_mr "
1964 "failed");
1965 }
1966 chan->tx_mr_hdl = NULL;
1967 }
1968
1969 if (chan->tx_mr_bufs != NULL) {
1970 kmem_free(chan->tx_mr_bufs, chan->scq_size *
1971 state->id_rc_tx_copy_thresh);
1972 chan->tx_mr_bufs = NULL;
1973 }
1974
1975 if (chan->tx_wqes != NULL) {
1976 kmem_free(chan->tx_wqes, chan->scq_size *
1977 sizeof (ibd_swqe_t));
1978 chan->tx_wqes = NULL;
1979 }
1980 }
1981
1982 /*
1983 * Acquire send wqe from free list.
1984 * Returns error number and send wqe pointer.
1985 */
1986 ibd_swqe_t *
1987 ibd_rc_acquire_swqes(ibd_rc_chan_t *chan)
1988 {
1989 ibd_swqe_t *wqe;
1990
1991 mutex_enter(&chan->tx_rel_list.dl_mutex);
1992 if (chan->tx_rel_list.dl_head != NULL) {
1993 /* transfer id_tx_rel_list to id_tx_list */
1994 chan->tx_wqe_list.dl_head =
1995 chan->tx_rel_list.dl_head;
1996 chan->tx_wqe_list.dl_cnt =
1997 chan->tx_rel_list.dl_cnt;
1998 chan->tx_wqe_list.dl_pending_sends = B_FALSE;
1999
2000 /* clear id_tx_rel_list */
2001 chan->tx_rel_list.dl_head = NULL;
2002 chan->tx_rel_list.dl_cnt = 0;
2003 mutex_exit(&chan->tx_rel_list.dl_mutex);
2004
2005 wqe = WQE_TO_SWQE(chan->tx_wqe_list.dl_head);
2006 chan->tx_wqe_list.dl_cnt -= 1;
2007 chan->tx_wqe_list.dl_head = wqe->swqe_next;
2008 } else { /* no free swqe */
2009 mutex_exit(&chan->tx_rel_list.dl_mutex);
2010 chan->tx_wqe_list.dl_pending_sends = B_TRUE;
2011 wqe = NULL;
2012 }
2013 return (wqe);
2014 }
2015
2016 /*
2017 * Release send wqe back into free list.
2018 */
2019 static void
2020 ibd_rc_release_swqe(ibd_rc_chan_t *chan, ibd_swqe_t *swqe)
2021 {
2022 /*
2023 * Add back on Tx list for reuse.
2024 */
2025 swqe->swqe_next = NULL;
2026 mutex_enter(&chan->tx_rel_list.dl_mutex);
2027 chan->tx_rel_list.dl_pending_sends = B_FALSE;
2028 swqe->swqe_next = chan->tx_rel_list.dl_head;
2029 chan->tx_rel_list.dl_head = SWQE_TO_WQE(swqe);
2030 chan->tx_rel_list.dl_cnt++;
2031 mutex_exit(&chan->tx_rel_list.dl_mutex);
2032 }
2033
2034 void
2035 ibd_rc_post_send(ibd_rc_chan_t *chan, ibd_swqe_t *node)
2036 {
2037 uint_t i;
2038 uint_t num_posted;
2039 uint_t n_wrs;
2040 ibt_status_t ibt_status;
2041 ibt_send_wr_t wrs[IBD_MAX_TX_POST_MULTIPLE];
2042 ibd_swqe_t *tx_head, *elem;
2043 ibd_swqe_t *nodes[IBD_MAX_TX_POST_MULTIPLE];
2044
2045 /* post the one request, then check for more */
2046 ibt_status = ibt_post_send(chan->chan_hdl,
2047 &node->w_swr, 1, NULL);
2048 if (ibt_status != IBT_SUCCESS) {
2049 ibd_print_warn(chan->state, "ibd_post_send: "
2050 "posting one wr failed: ret=%d", ibt_status);
2051 ibd_rc_tx_cleanup(node);
2052 }
2053
2054 tx_head = NULL;
2055 for (;;) {
2056 if (tx_head == NULL) {
2057 mutex_enter(&chan->tx_post_lock);
2058 tx_head = chan->tx_head;
2059 if (tx_head == NULL) {
2060 chan->tx_busy = 0;
2061 mutex_exit(&chan->tx_post_lock);
2062 return;
2063 }
2064 chan->tx_head = NULL;
2065 mutex_exit(&chan->tx_post_lock);
2066 }
2067
2068 /*
2069 * Collect pending requests, IBD_MAX_TX_POST_MULTIPLE wrs
2070 * at a time if possible, and keep posting them.
2071 */
2072 for (n_wrs = 0, elem = tx_head;
2073 (elem) && (n_wrs < IBD_MAX_TX_POST_MULTIPLE);
2074 elem = WQE_TO_SWQE(elem->swqe_next), n_wrs++) {
2075 nodes[n_wrs] = elem;
2076 wrs[n_wrs] = elem->w_swr;
2077 }
2078 tx_head = elem;
2079
2080 ASSERT(n_wrs != 0);
2081
2082 /*
2083 * If posting fails for some reason, we'll never receive
2084 * completion intimation, so we'll need to cleanup. But
2085 * we need to make sure we don't clean up nodes whose
2086 * wrs have been successfully posted. We assume that the
2087 * hca driver returns on the first failure to post and
2088 * therefore the first 'num_posted' entries don't need
2089 * cleanup here.
2090 */
2091 num_posted = 0;
2092 ibt_status = ibt_post_send(chan->chan_hdl,
2093 wrs, n_wrs, &num_posted);
2094 if (ibt_status != IBT_SUCCESS) {
2095 ibd_print_warn(chan->state, "ibd_post_send: "
2096 "posting multiple wrs failed: "
2097 "requested=%d, done=%d, ret=%d",
2098 n_wrs, num_posted, ibt_status);
2099
2100 for (i = num_posted; i < n_wrs; i++)
2101 ibd_rc_tx_cleanup(nodes[i]);
2102 }
2103 }
2104 }
2105
2106 /*
2107 * Common code that deals with clean ups after a successful or
2108 * erroneous transmission attempt.
2109 */
2110 void
2111 ibd_rc_tx_cleanup(ibd_swqe_t *swqe)
2112 {
2113 ibd_ace_t *ace = swqe->w_ahandle;
2114 ibd_state_t *state;
2115
2116 ASSERT(ace != NULL);
2117 ASSERT(ace->ac_chan != NULL);
2118
2119 state = ace->ac_chan->state;
2120
2121 /*
2122 * If this was a dynamic registration in ibd_send(),
2123 * deregister now.
2124 */
2125 if (swqe->swqe_im_mblk != NULL) {
2126 ASSERT(swqe->w_buftype == IBD_WQE_MAPPED);
2127 if (swqe->w_buftype == IBD_WQE_MAPPED) {
2128 ibd_unmap_mem(state, swqe);
2129 }
2130 freemsg(swqe->swqe_im_mblk);
2131 swqe->swqe_im_mblk = NULL;
2132 } else {
2133 ASSERT(swqe->w_buftype != IBD_WQE_MAPPED);
2134 }
2135
2136 if (swqe->w_buftype == IBD_WQE_RC_COPYBUF) {
2137 ibd_rc_tx_largebuf_t *lbufp;
2138
2139 lbufp = swqe->w_rc_tx_largebuf;
2140 ASSERT(lbufp != NULL);
2141
2142 mutex_enter(&state->rc_tx_large_bufs_lock);
2143 lbufp->lb_next = state->rc_tx_largebuf_free_head;
2144 state->rc_tx_largebuf_free_head = lbufp;
2145 state->rc_tx_largebuf_nfree ++;
2146 mutex_exit(&state->rc_tx_large_bufs_lock);
2147 swqe->w_rc_tx_largebuf = NULL;
2148 }
2149
2150
2151 /*
2152 * Release the send wqe for reuse.
2153 */
2154 ibd_rc_release_swqe(ace->ac_chan, swqe);
2155
2156 /*
2157 * Drop the reference count on the AH; it can be reused
2158 * now for a different destination if there are no more
2159 * posted sends that will use it. This can be eliminated
2160 * if we can always associate each Tx buffer with an AH.
2161 * The ace can be null if we are cleaning up from the
2162 * ibd_send() error path.
2163 */
2164 ibd_dec_ref_ace(state, ace);
2165 }
2166
2167 void
2168 ibd_rc_drain_scq(ibd_rc_chan_t *chan, ibt_cq_hdl_t cq_hdl)
2169 {
2170 ibd_state_t *state = chan->state;
2171 ibd_wqe_t *wqe;
2172 ibt_wc_t *wc, *wcs;
2173 ibd_ace_t *ace;
2174 uint_t numwcs, real_numwcs;
2175 int i;
2176 boolean_t encount_error;
2177
2178 wcs = chan->tx_wc;
2179 numwcs = IBD_RC_MAX_CQ_WC;
2180 encount_error = B_FALSE;
2181
2182 while (ibt_poll_cq(cq_hdl, wcs, numwcs, &real_numwcs) == IBT_SUCCESS) {
2183 for (i = 0, wc = wcs; i < real_numwcs; i++, wc++) {
2184 wqe = (ibd_wqe_t *)(uintptr_t)wc->wc_id;
2185 if (wc->wc_status != IBT_WC_SUCCESS) {
2186 if (encount_error == B_FALSE) {
2187 /*
2188 * This RC channle is in error status,
2189 * remove it.
2190 */
2191 encount_error = B_TRUE;
2192 mutex_enter(&state->id_ac_mutex);
2193 if ((chan->chan_state ==
2194 IBD_RC_STATE_ACT_ESTAB) &&
2195 (chan->state->id_link_state ==
2196 LINK_STATE_UP) &&
2197 ((ace = ibd_acache_find(state,
2198 &chan->ace->ac_mac, B_FALSE, 0))
2199 != NULL) && (ace == chan->ace)) {
2200 ASSERT(ace->ac_mce == NULL);
2201 INC_REF(ace, 1);
2202 IBD_ACACHE_PULLOUT_ACTIVE(
2203 state, ace);
2204 chan->chan_state =
2205 IBD_RC_STATE_ACT_CLOSING;
2206 mutex_exit(&state->id_ac_mutex);
2207 state->rc_reset_cnt++;
2208 DPRINT(30, "ibd_rc_drain_scq: "
2209 "wc_status(%d) != SUCC, "
2210 "chan=%p, ace=%p, "
2211 "link_state=%d"
2212 "reset RC channel",
2213 wc->wc_status, chan,
2214 chan->ace, chan->state->
2215 id_link_state);
2216 ibd_rc_signal_act_close(
2217 state, ace);
2218 } else {
2219 mutex_exit(&state->id_ac_mutex);
2220 state->
2221 rc_act_close_simultaneous++;
2222 DPRINT(40, "ibd_rc_drain_scq: "
2223 "wc_status(%d) != SUCC, "
2224 "chan=%p, chan_state=%d,"
2225 "ace=%p, link_state=%d."
2226 "other thread is closing "
2227 "it", wc->wc_status, chan,
2228 chan->chan_state, chan->ace,
2229 chan->state->id_link_state);
2230 }
2231 }
2232 }
2233 ibd_rc_tx_cleanup(WQE_TO_SWQE(wqe));
2234 }
2235
2236 mutex_enter(&state->id_sched_lock);
2237 if (state->id_sched_needed == 0) {
2238 mutex_exit(&state->id_sched_lock);
2239 } else if (state->id_sched_needed & IBD_RSRC_RC_SWQE) {
2240 mutex_enter(&chan->tx_wqe_list.dl_mutex);
2241 mutex_enter(&chan->tx_rel_list.dl_mutex);
2242 if ((chan->tx_rel_list.dl_cnt +
2243 chan->tx_wqe_list.dl_cnt) > IBD_RC_TX_FREE_THRESH) {
2244 state->id_sched_needed &= ~IBD_RSRC_RC_SWQE;
2245 mutex_exit(&chan->tx_rel_list.dl_mutex);
2246 mutex_exit(&chan->tx_wqe_list.dl_mutex);
2247 mutex_exit(&state->id_sched_lock);
2248 state->rc_swqe_mac_update++;
2249 mac_tx_update(state->id_mh);
2250 } else {
2251 state->rc_scq_no_swqe++;
2252 mutex_exit(&chan->tx_rel_list.dl_mutex);
2253 mutex_exit(&chan->tx_wqe_list.dl_mutex);
2254 mutex_exit(&state->id_sched_lock);
2255 }
2256 } else if (state->id_sched_needed & IBD_RSRC_RC_TX_LARGEBUF) {
2257 mutex_enter(&state->rc_tx_large_bufs_lock);
2258 if (state->rc_tx_largebuf_nfree >
2259 IBD_RC_TX_FREE_THRESH) {
2260 ASSERT(state->rc_tx_largebuf_free_head != NULL);
2261 state->id_sched_needed &=
2262 ~IBD_RSRC_RC_TX_LARGEBUF;
2263 mutex_exit(&state->rc_tx_large_bufs_lock);
2264 mutex_exit(&state->id_sched_lock);
2265 state->rc_xmt_buf_mac_update++;
2266 mac_tx_update(state->id_mh);
2267 } else {
2268 state->rc_scq_no_largebuf++;
2269 mutex_exit(&state->rc_tx_large_bufs_lock);
2270 mutex_exit(&state->id_sched_lock);
2271 }
2272 } else if (state->id_sched_needed & IBD_RSRC_SWQE) {
2273 mutex_enter(&state->id_tx_list.dl_mutex);
2274 mutex_enter(&state->id_tx_rel_list.dl_mutex);
2275 if ((state->id_tx_list.dl_cnt +
2276 state->id_tx_rel_list.dl_cnt)
2277 > IBD_FREE_SWQES_THRESH) {
2278 state->id_sched_needed &= ~IBD_RSRC_SWQE;
2279 state->id_sched_cnt++;
2280 mutex_exit(&state->id_tx_rel_list.dl_mutex);
2281 mutex_exit(&state->id_tx_list.dl_mutex);
2282 mutex_exit(&state->id_sched_lock);
2283 mac_tx_update(state->id_mh);
2284 } else {
2285 mutex_exit(&state->id_tx_rel_list.dl_mutex);
2286 mutex_exit(&state->id_tx_list.dl_mutex);
2287 mutex_exit(&state->id_sched_lock);
2288 }
2289 } else {
2290 mutex_exit(&state->id_sched_lock);
2291 }
2292 }
2293 }
2294
2295 /* Send CQ handler, call ibd_rx_tx_cleanup to recycle Tx buffers */
2296 /* ARGSUSED */
2297 static void
2298 ibd_rc_scq_handler(ibt_cq_hdl_t cq_hdl, void *arg)
2299 {
2300 ibd_rc_chan_t *chan = (ibd_rc_chan_t *)arg;
2301
2302 if (ibd_rc_tx_softintr == 1) {
2303 mutex_enter(&chan->tx_poll_lock);
2304 if (chan->tx_poll_busy & IBD_CQ_POLLING) {
2305 chan->tx_poll_busy |= IBD_REDO_CQ_POLLING;
2306 mutex_exit(&chan->tx_poll_lock);
2307 return;
2308 } else {
2309 mutex_exit(&chan->tx_poll_lock);
2310 ddi_trigger_softintr(chan->scq_softintr);
2311 }
2312 } else
2313 (void) ibd_rc_tx_recycle(arg);
2314 }
2315
2316 static uint_t
2317 ibd_rc_tx_recycle(caddr_t arg)
2318 {
2319 ibd_rc_chan_t *chan = (ibd_rc_chan_t *)arg;
2320 ibd_state_t *state = chan->state;
2321 int flag, redo_flag;
2322 int redo = 1;
2323
2324 flag = IBD_CQ_POLLING;
2325 redo_flag = IBD_REDO_CQ_POLLING;
2326
2327 mutex_enter(&chan->tx_poll_lock);
2328 if (chan->tx_poll_busy & flag) {
2329 ibd_print_warn(state, "ibd_rc_tx_recycle: multiple polling "
2330 "threads");
2331 chan->tx_poll_busy |= redo_flag;
2332 mutex_exit(&chan->tx_poll_lock);
2333 return (DDI_INTR_CLAIMED);
2334 }
2335 chan->tx_poll_busy |= flag;
2336 mutex_exit(&chan->tx_poll_lock);
2337
2338 /*
2339 * Poll for completed entries; the CQ will not interrupt any
2340 * more for completed packets.
2341 */
2342 ibd_rc_drain_scq(chan, chan->scq_hdl);
2343
2344 /*
2345 * Now enable CQ notifications; all completions originating now
2346 * will cause new interrupts.
2347 */
2348 do {
2349 if (ibt_enable_cq_notify(chan->scq_hdl, IBT_NEXT_COMPLETION) !=
2350 IBT_SUCCESS) {
2351 /*
2352 * We do not expect a failure here.
2353 */
2354 DPRINT(40, "ibd_rc_scq_handler: ibt_enable_cq_notify()"
2355 " failed");
2356 }
2357
2358 ibd_rc_drain_scq(chan, chan->scq_hdl);
2359
2360 mutex_enter(&chan->tx_poll_lock);
2361 if (chan->tx_poll_busy & redo_flag)
2362 chan->tx_poll_busy &= ~redo_flag;
2363 else {
2364 chan->tx_poll_busy &= ~flag;
2365 redo = 0;
2366 }
2367 mutex_exit(&chan->tx_poll_lock);
2368
2369 } while (redo);
2370
2371 return (DDI_INTR_CLAIMED);
2372 }
2373
2374 static ibt_status_t
2375 ibd_register_service(ibt_srv_desc_t *srv, ib_svc_id_t sid,
2376 int num_sids, ibt_srv_hdl_t *srv_hdl, ib_svc_id_t *ret_sid)
2377 {
2378 ibd_service_t *p;
2379 ibt_status_t status;
2380
2381 mutex_enter(&ibd_gstate.ig_mutex);
2382 for (p = ibd_gstate.ig_service_list; p != NULL; p = p->is_link) {
2383 if (p->is_sid == sid) {
2384 p->is_ref_cnt++;
2385 *srv_hdl = p->is_srv_hdl;
2386 *ret_sid = sid;
2387 mutex_exit(&ibd_gstate.ig_mutex);
2388 return (IBT_SUCCESS);
2389 }
2390 }
2391 status = ibt_register_service(ibd_gstate.ig_ibt_hdl, srv, sid,
2392 num_sids, srv_hdl, ret_sid);
2393 if (status == IBT_SUCCESS) {
2394 p = kmem_alloc(sizeof (*p), KM_SLEEP);
2395 p->is_srv_hdl = *srv_hdl;
2396 p->is_sid = sid;
2397 p->is_ref_cnt = 1;
2398 p->is_link = ibd_gstate.ig_service_list;
2399 ibd_gstate.ig_service_list = p;
2400 }
2401 mutex_exit(&ibd_gstate.ig_mutex);
2402 return (status);
2403 }
2404
2405 static ibt_status_t
2406 ibd_deregister_service(ibt_srv_hdl_t srv_hdl)
2407 {
2408 ibd_service_t *p, **pp;
2409 ibt_status_t status;
2410
2411 mutex_enter(&ibd_gstate.ig_mutex);
2412 for (pp = &ibd_gstate.ig_service_list; *pp != NULL;
2413 pp = &((*pp)->is_link)) {
2414 p = *pp;
2415 if (p->is_srv_hdl == srv_hdl) { /* Found it */
2416 if (--p->is_ref_cnt == 0) {
2417 status = ibt_deregister_service(
2418 ibd_gstate.ig_ibt_hdl, srv_hdl);
2419 *pp = p->is_link; /* link prev to next */
2420 kmem_free(p, sizeof (*p));
2421 } else {
2422 status = IBT_SUCCESS;
2423 }
2424 mutex_exit(&ibd_gstate.ig_mutex);
2425 return (status);
2426 }
2427 }
2428 /* Should not ever get here */
2429 mutex_exit(&ibd_gstate.ig_mutex);
2430 return (IBT_FAILURE);
2431 }
2432
2433 /* Listen with corresponding service ID */
2434 ibt_status_t
2435 ibd_rc_listen(ibd_state_t *state)
2436 {
2437 ibt_srv_desc_t srvdesc;
2438 ib_svc_id_t ret_sid;
2439 ibt_status_t status;
2440 ib_gid_t gid;
2441
2442 if (state->rc_listen_hdl != NULL) {
2443 DPRINT(40, "ibd_rc_listen: rc_listen_hdl should be NULL");
2444 return (IBT_FAILURE);
2445 }
2446
2447 bzero(&srvdesc, sizeof (ibt_srv_desc_t));
2448 srvdesc.sd_handler = ibd_rc_dispatch_pass_mad;
2449 srvdesc.sd_flags = IBT_SRV_NO_FLAGS;
2450
2451 /*
2452 * Register the service with service id
2453 * Incoming connection requests should arrive on this service id.
2454 */
2455 status = ibd_register_service(&srvdesc,
2456 IBD_RC_QPN_TO_SID(state->id_qpnum),
2457 1, &state->rc_listen_hdl, &ret_sid);
2458 if (status != IBT_SUCCESS) {
2459 DPRINT(40, "ibd_rc_listen: Service Registration Failed, "
2460 "ret=%d", status);
2461 return (status);
2462 }
2463
2464 gid = state->id_sgid;
2465
2466 /* pass state as cm_private */
2467 status = ibt_bind_service(state->rc_listen_hdl,
2468 gid, NULL, state, &state->rc_listen_bind);
2469 if (status != IBT_SUCCESS) {
2470 DPRINT(40, "ibd_rc_listen:"
2471 " fail to bind port: <%d>", status);
2472 (void) ibd_deregister_service(state->rc_listen_hdl);
2473 return (status);
2474 }
2475
2476 /*
2477 * Legacy OFED had used a wrong service ID (one additional zero digit)
2478 * for many years. To interop with legacy OFED, we support this wrong
2479 * service ID here.
2480 */
2481 ASSERT(state->rc_listen_hdl_OFED_interop == NULL);
2482
2483 bzero(&srvdesc, sizeof (ibt_srv_desc_t));
2484 srvdesc.sd_handler = ibd_rc_dispatch_pass_mad;
2485 srvdesc.sd_flags = IBT_SRV_NO_FLAGS;
2486
2487 /*
2488 * Register the service with service id
2489 * Incoming connection requests should arrive on this service id.
2490 */
2491 status = ibd_register_service(&srvdesc,
2492 IBD_RC_QPN_TO_SID_OFED_INTEROP(state->id_qpnum),
2493 1, &state->rc_listen_hdl_OFED_interop, &ret_sid);
2494 if (status != IBT_SUCCESS) {
2495 DPRINT(40,
2496 "ibd_rc_listen: Service Registration for Legacy OFED "
2497 "Failed %d", status);
2498 (void) ibt_unbind_service(state->rc_listen_hdl,
2499 state->rc_listen_bind);
2500 (void) ibd_deregister_service(state->rc_listen_hdl);
2501 return (status);
2502 }
2503
2504 gid = state->id_sgid;
2505
2506 /* pass state as cm_private */
2507 status = ibt_bind_service(state->rc_listen_hdl_OFED_interop,
2508 gid, NULL, state, &state->rc_listen_bind_OFED_interop);
2509 if (status != IBT_SUCCESS) {
2510 DPRINT(40, "ibd_rc_listen: fail to bind port: <%d> for "
2511 "Legacy OFED listener", status);
2512 (void) ibd_deregister_service(
2513 state->rc_listen_hdl_OFED_interop);
2514 (void) ibt_unbind_service(state->rc_listen_hdl,
2515 state->rc_listen_bind);
2516 (void) ibd_deregister_service(state->rc_listen_hdl);
2517 return (status);
2518 }
2519
2520 return (IBT_SUCCESS);
2521 }
2522
2523 void
2524 ibd_rc_stop_listen(ibd_state_t *state)
2525 {
2526 int ret;
2527
2528 /* Disable incoming connection requests */
2529 if (state->rc_listen_hdl != NULL) {
2530 ret = ibt_unbind_all_services(state->rc_listen_hdl);
2531 if (ret != 0) {
2532 DPRINT(40, "ibd_rc_stop_listen:"
2533 "ibt_unbind_all_services() failed, ret=%d", ret);
2534 }
2535 ret = ibd_deregister_service(state->rc_listen_hdl);
2536 if (ret != 0) {
2537 DPRINT(40, "ibd_rc_stop_listen:"
2538 "ibd_deregister_service() failed, ret=%d", ret);
2539 } else {
2540 state->rc_listen_hdl = NULL;
2541 }
2542 }
2543
2544 /* Disable incoming connection requests */
2545 if (state->rc_listen_hdl_OFED_interop != NULL) {
2546 ret = ibt_unbind_all_services(
2547 state->rc_listen_hdl_OFED_interop);
2548 if (ret != 0) {
2549 DPRINT(40, "ibd_rc_stop_listen:"
2550 "ibt_unbind_all_services() failed: %d", ret);
2551 }
2552 ret = ibd_deregister_service(state->rc_listen_hdl_OFED_interop);
2553 if (ret != 0) {
2554 DPRINT(40, "ibd_rc_stop_listen:"
2555 "ibd_deregister_service() failed: %d", ret);
2556 } else {
2557 state->rc_listen_hdl_OFED_interop = NULL;
2558 }
2559 }
2560 }
2561
2562 void
2563 ibd_rc_close_all_chan(ibd_state_t *state)
2564 {
2565 ibd_rc_chan_t *rc_chan;
2566 ibd_ace_t *ace, *pre_ace;
2567 uint_t attempts;
2568
2569 /* Disable all Rx routines */
2570 mutex_enter(&state->rc_pass_chan_list.chan_list_mutex);
2571 rc_chan = state->rc_pass_chan_list.chan_list;
2572 while (rc_chan != NULL) {
2573 ibt_set_cq_handler(rc_chan->rcq_hdl, 0, 0);
2574 rc_chan = rc_chan->next;
2575 }
2576 mutex_exit(&state->rc_pass_chan_list.chan_list_mutex);
2577
2578 if (state->rc_enable_srq) {
2579 attempts = 10;
2580 while (state->rc_srq_rwqe_list.dl_bufs_outstanding > 0) {
2581 DPRINT(30, "ibd_rc_close_all_chan: outstanding > 0");
2582 delay(drv_usectohz(100000));
2583 if (--attempts == 0) {
2584 /*
2585 * There are pending bufs with the network
2586 * layer and we have no choice but to wait
2587 * for them to be done with. Reap all the
2588 * Tx/Rx completions that were posted since
2589 * we turned off the notification and
2590 * return failure.
2591 */
2592 break;
2593 }
2594 }
2595 }
2596
2597 /* Close all passive RC channels */
2598 rc_chan = ibd_rc_rm_header_chan_list(&state->rc_pass_chan_list);
2599 while (rc_chan != NULL) {
2600 (void) ibd_rc_pas_close(rc_chan, B_TRUE, B_FALSE);
2601 rc_chan = ibd_rc_rm_header_chan_list(&state->rc_pass_chan_list);
2602 }
2603
2604 /* Close all active RC channels */
2605 mutex_enter(&state->id_ac_mutex);
2606 state->id_ac_hot_ace = NULL;
2607 ace = list_head(&state->id_ah_active);
2608 while ((pre_ace = ace) != NULL) {
2609 ace = list_next(&state->id_ah_active, ace);
2610 if (pre_ace->ac_chan != NULL) {
2611 INC_REF(pre_ace, 1);
2612 IBD_ACACHE_PULLOUT_ACTIVE(state, pre_ace);
2613 pre_ace->ac_chan->chan_state = IBD_RC_STATE_ACT_CLOSING;
2614 ibd_rc_add_to_chan_list(&state->rc_obs_act_chan_list,
2615 pre_ace->ac_chan);
2616 }
2617 }
2618 mutex_exit(&state->id_ac_mutex);
2619
2620 rc_chan = ibd_rc_rm_header_chan_list(&state->rc_obs_act_chan_list);
2621 while (rc_chan != NULL) {
2622 ace = rc_chan->ace;
2623 ibd_rc_act_close(rc_chan, B_TRUE);
2624 if (ace != NULL) {
2625 mutex_enter(&state->id_ac_mutex);
2626 ASSERT(ace->ac_ref != 0);
2627 atomic_dec_32(&ace->ac_ref);
2628 ace->ac_chan = NULL;
2629 if ((ace->ac_ref == 0) || (ace->ac_ref == CYCLEVAL)) {
2630 IBD_ACACHE_INSERT_FREE(state, ace);
2631 ace->ac_ref = 0;
2632 } else {
2633 ace->ac_ref |= CYCLEVAL;
2634 state->rc_delay_ace_recycle++;
2635 }
2636 mutex_exit(&state->id_ac_mutex);
2637 }
2638 rc_chan = ibd_rc_rm_header_chan_list(
2639 &state->rc_obs_act_chan_list);
2640 }
2641
2642 attempts = 400;
2643 while (((state->rc_num_tx_chan != 0) ||
2644 (state->rc_num_rx_chan != 0)) && (attempts > 0)) {
2645 /* Other thread is closing CM channel, wait it */
2646 delay(drv_usectohz(100000));
2647 attempts--;
2648 }
2649 }
2650
2651 void
2652 ibd_rc_try_connect(ibd_state_t *state, ibd_ace_t *ace, ibt_path_info_t *path)
2653 {
2654 ibt_status_t status;
2655
2656 if ((state->id_mac_state & IBD_DRV_STARTED) == 0)
2657 return;
2658
2659 status = ibd_rc_connect(state, ace, path,
2660 IBD_RC_SERVICE_ID_OFED_INTEROP);
2661
2662 if (status != IBT_SUCCESS) {
2663 /* wait peer side remove stale channel */
2664 delay(drv_usectohz(10000));
2665 if ((state->id_mac_state & IBD_DRV_STARTED) == 0)
2666 return;
2667 status = ibd_rc_connect(state, ace, path,
2668 IBD_RC_SERVICE_ID_OFED_INTEROP);
2669 }
2670
2671 if (status != IBT_SUCCESS) {
2672 /* wait peer side remove stale channel */
2673 delay(drv_usectohz(10000));
2674 if ((state->id_mac_state & IBD_DRV_STARTED) == 0)
2675 return;
2676 (void) ibd_rc_connect(state, ace, path,
2677 IBD_RC_SERVICE_ID);
2678 }
2679 }
2680
2681 /*
2682 * Allocates channel and sets the ace->ac_chan to it.
2683 * Opens the channel.
2684 */
2685 ibt_status_t
2686 ibd_rc_connect(ibd_state_t *state, ibd_ace_t *ace, ibt_path_info_t *path,
2687 uint64_t ietf_cm_service_id)
2688 {
2689 ibt_status_t status = 0;
2690 ibt_rc_returns_t open_returns;
2691 ibt_chan_open_args_t open_args;
2692 ibd_rc_msg_hello_t hello_req_msg;
2693 ibd_rc_msg_hello_t *hello_ack_msg;
2694 ibd_rc_chan_t *chan;
2695 ibt_ud_dest_query_attr_t dest_attrs;
2696
2697 ASSERT(ace != NULL);
2698 ASSERT(ace->ac_mce == NULL);
2699 ASSERT(ace->ac_chan == NULL);
2700
2701 if ((status = ibd_rc_alloc_chan(&chan, state, B_TRUE)) != IBT_SUCCESS) {
2702 DPRINT(10, "ibd_rc_connect: ibd_rc_alloc_chan() failed");
2703 return (status);
2704 }
2705
2706 ace->ac_chan = chan;
2707 chan->state = state;
2708 chan->ace = ace;
2709
2710 ibt_set_chan_private(chan->chan_hdl, (void *)(uintptr_t)ace);
2711
2712 hello_ack_msg = kmem_zalloc(sizeof (ibd_rc_msg_hello_t), KM_SLEEP);
2713
2714 /*
2715 * open the channels
2716 */
2717 bzero(&open_args, sizeof (ibt_chan_open_args_t));
2718 bzero(&open_returns, sizeof (ibt_rc_returns_t));
2719
2720 open_args.oc_cm_handler = ibd_rc_dispatch_actv_mad;
2721 open_args.oc_cm_clnt_private = (void *)(uintptr_t)ace;
2722
2723 /*
2724 * update path record with the SID
2725 */
2726 if ((status = ibt_query_ud_dest(ace->ac_dest, &dest_attrs))
2727 != IBT_SUCCESS) {
2728 DPRINT(40, "ibd_rc_connect: ibt_query_ud_dest() failed, "
2729 "ret=%d", status);
2730 return (status);
2731 }
2732
2733 path->pi_sid =
2734 ietf_cm_service_id | ((dest_attrs.ud_dst_qpn) & 0xffffff);
2735
2736
2737 /* pre-allocate memory for hello ack message */
2738 open_returns.rc_priv_data_len = sizeof (ibd_rc_msg_hello_t);
2739 open_returns.rc_priv_data = hello_ack_msg;
2740
2741 open_args.oc_path = path;
2742
2743 open_args.oc_path_rnr_retry_cnt = 1;
2744 open_args.oc_path_retry_cnt = 1;
2745
2746 /* We don't do RDMA */
2747 open_args.oc_rdma_ra_out = 0;
2748 open_args.oc_rdma_ra_in = 0;
2749
2750 hello_req_msg.reserved_qpn = htonl(state->id_qpnum);
2751 hello_req_msg.rx_mtu = htonl(state->rc_mtu);
2752 open_args.oc_priv_data_len = sizeof (ibd_rc_msg_hello_t);
2753 open_args.oc_priv_data = (void *)(&hello_req_msg);
2754
2755 ASSERT(open_args.oc_priv_data_len <= IBT_REQ_PRIV_DATA_SZ);
2756 ASSERT(open_returns.rc_priv_data_len <= IBT_REP_PRIV_DATA_SZ);
2757 ASSERT(open_args.oc_cm_handler != NULL);
2758
2759 status = ibt_open_rc_channel(chan->chan_hdl, IBT_OCHAN_NO_FLAGS,
2760 IBT_BLOCKING, &open_args, &open_returns);
2761
2762 if (status == IBT_SUCCESS) {
2763 /* Success! */
2764 DPRINT(2, "ibd_rc_connect: call ibt_open_rc_channel succ!");
2765 state->rc_conn_succ++;
2766 kmem_free(hello_ack_msg, sizeof (ibd_rc_msg_hello_t));
2767 return (IBT_SUCCESS);
2768 }
2769
2770 /* failure */
2771 (void) ibt_flush_channel(chan->chan_hdl);
2772 ibd_rc_free_chan(chan);
2773 ace->ac_chan = NULL;
2774
2775 /* check open_returns report error and exit */
2776 DPRINT(30, "ibd_rc_connect: call ibt_open_rc_chan fail."
2777 "ret status = %d, reason=%d, ace=%p, mtu=0x%x, qpn=0x%x,"
2778 " peer qpn=0x%x", status, (int)open_returns.rc_status, ace,
2779 hello_req_msg.rx_mtu, hello_req_msg.reserved_qpn,
2780 dest_attrs.ud_dst_qpn);
2781 kmem_free(hello_ack_msg, sizeof (ibd_rc_msg_hello_t));
2782 return (status);
2783 }
2784
2785 void
2786 ibd_rc_signal_act_close(ibd_state_t *state, ibd_ace_t *ace)
2787 {
2788 ibd_req_t *req;
2789
2790 req = kmem_cache_alloc(state->id_req_kmc, KM_NOSLEEP);
2791 if (req == NULL) {
2792 ibd_print_warn(state, "ibd_rc_signal_act_close: alloc "
2793 "ibd_req_t fail");
2794 mutex_enter(&state->rc_obs_act_chan_list.chan_list_mutex);
2795 ace->ac_chan->next = state->rc_obs_act_chan_list.chan_list;
2796 state->rc_obs_act_chan_list.chan_list = ace->ac_chan;
2797 mutex_exit(&state->rc_obs_act_chan_list.chan_list_mutex);
2798 } else {
2799 req->rq_ptr = ace->ac_chan;
2800 ibd_queue_work_slot(state, req, IBD_ASYNC_RC_CLOSE_ACT_CHAN);
2801 }
2802 }
2803
2804 void
2805 ibd_rc_signal_ace_recycle(ibd_state_t *state, ibd_ace_t *ace)
2806 {
2807 ibd_req_t *req;
2808
2809 mutex_enter(&state->rc_ace_recycle_lock);
2810 if (state->rc_ace_recycle != NULL) {
2811 mutex_exit(&state->rc_ace_recycle_lock);
2812 return;
2813 }
2814
2815 req = kmem_cache_alloc(state->id_req_kmc, KM_NOSLEEP);
2816 if (req == NULL) {
2817 mutex_exit(&state->rc_ace_recycle_lock);
2818 return;
2819 }
2820
2821 state->rc_ace_recycle = ace;
2822 mutex_exit(&state->rc_ace_recycle_lock);
2823 ASSERT(ace->ac_mce == NULL);
2824 INC_REF(ace, 1);
2825 IBD_ACACHE_PULLOUT_ACTIVE(state, ace);
2826 req->rq_ptr = ace;
2827 ibd_queue_work_slot(state, req, IBD_ASYNC_RC_RECYCLE_ACE);
2828 }
2829
2830 /*
2831 * Close an active channel
2832 *
2833 * is_close_rc_chan: if B_TRUE, we will call ibt_close_rc_channel()
2834 */
2835 static void
2836 ibd_rc_act_close(ibd_rc_chan_t *chan, boolean_t is_close_rc_chan)
2837 {
2838 ibd_state_t *state;
2839 ibd_ace_t *ace;
2840 uint_t times;
2841 ibt_status_t ret;
2842
2843 ASSERT(chan != NULL);
2844
2845 chan->state->rc_act_close++;
2846 switch (chan->chan_state) {
2847 case IBD_RC_STATE_ACT_CLOSING: /* stale, close it */
2848 case IBD_RC_STATE_ACT_ESTAB:
2849 DPRINT(30, "ibd_rc_act_close-1: close and free chan, "
2850 "act_state=%d, chan=%p", chan->chan_state, chan);
2851 chan->chan_state = IBD_RC_STATE_ACT_CLOSED;
2852 ibt_set_cq_handler(chan->rcq_hdl, 0, 0);
2853 /*
2854 * Wait send queue empty. Its old value is 50 (5 seconds). But
2855 * in my experiment, 5 seconds is not enough time to let IBTL
2856 * return all buffers and ace->ac_ref. I tried 25 seconds, it
2857 * works well. As another evidence, I saw IBTL takes about 17
2858 * seconds every time it cleans a stale RC channel.
2859 */
2860 times = 250;
2861 ace = chan->ace;
2862 ASSERT(ace != NULL);
2863 state = chan->state;
2864 ASSERT(state != NULL);
2865 mutex_enter(&state->id_ac_mutex);
2866 mutex_enter(&chan->tx_wqe_list.dl_mutex);
2867 mutex_enter(&chan->tx_rel_list.dl_mutex);
2868 while (((chan->tx_wqe_list.dl_cnt + chan->tx_rel_list.dl_cnt)
2869 != chan->scq_size) || ((ace->ac_ref != 1) &&
2870 (ace->ac_ref != (CYCLEVAL+1)))) {
2871 mutex_exit(&chan->tx_rel_list.dl_mutex);
2872 mutex_exit(&chan->tx_wqe_list.dl_mutex);
2873 mutex_exit(&state->id_ac_mutex);
2874 times--;
2875 if (times == 0) {
2876 state->rc_act_close_not_clean++;
2877 DPRINT(40, "ibd_rc_act_close: dl_cnt(tx_wqe_"
2878 "list=%d, tx_rel_list=%d) != chan->"
2879 "scq_size=%d, OR ac_ref(=%d) not clean",
2880 chan->tx_wqe_list.dl_cnt,
2881 chan->tx_rel_list.dl_cnt,
2882 chan->scq_size, ace->ac_ref);
2883 break;
2884 }
2885 mutex_enter(&chan->tx_poll_lock);
2886 if (chan->tx_poll_busy & IBD_CQ_POLLING) {
2887 DPRINT(40, "ibd_rc_act_close: multiple "
2888 "polling threads");
2889 mutex_exit(&chan->tx_poll_lock);
2890 } else {
2891 chan->tx_poll_busy = IBD_CQ_POLLING;
2892 mutex_exit(&chan->tx_poll_lock);
2893 ibd_rc_drain_scq(chan, chan->scq_hdl);
2894 mutex_enter(&chan->tx_poll_lock);
2895 chan->tx_poll_busy = 0;
2896 mutex_exit(&chan->tx_poll_lock);
2897 }
2898 delay(drv_usectohz(100000));
2899 mutex_enter(&state->id_ac_mutex);
2900 mutex_enter(&chan->tx_wqe_list.dl_mutex);
2901 mutex_enter(&chan->tx_rel_list.dl_mutex);
2902 }
2903 if (times != 0) {
2904 mutex_exit(&chan->tx_rel_list.dl_mutex);
2905 mutex_exit(&chan->tx_wqe_list.dl_mutex);
2906 mutex_exit(&state->id_ac_mutex);
2907 }
2908
2909 ibt_set_cq_handler(chan->scq_hdl, 0, 0);
2910 if (is_close_rc_chan) {
2911 ret = ibt_close_rc_channel(chan->chan_hdl,
2912 IBT_BLOCKING|IBT_NOCALLBACKS, NULL, 0, NULL, NULL,
2913 0);
2914 if (ret != IBT_SUCCESS) {
2915 DPRINT(40, "ibd_rc_act_close: ibt_close_rc_"
2916 "channel fail, chan=%p, ret=%d",
2917 chan, ret);
2918 } else {
2919 DPRINT(30, "ibd_rc_act_close: ibt_close_rc_"
2920 "channel succ, chan=%p", chan);
2921 }
2922 }
2923
2924 ibd_rc_free_chan(chan);
2925 break;
2926 case IBD_RC_STATE_ACT_REP_RECV:
2927 chan->chan_state = IBD_RC_STATE_ACT_CLOSED;
2928 (void) ibt_flush_channel(chan->chan_hdl);
2929 ibd_rc_free_chan(chan);
2930 break;
2931 case IBD_RC_STATE_ACT_ERROR:
2932 DPRINT(40, "ibd_rc_act_close: IBD_RC_STATE_ERROR branch");
2933 break;
2934 default:
2935 DPRINT(40, "ibd_rc_act_close: default branch, act_state=%d, "
2936 "chan=%p", chan->chan_state, chan);
2937 }
2938 }
2939
2940 /*
2941 * Close a passive channel
2942 *
2943 * is_close_rc_chan: if B_TRUE, we will call ibt_close_rc_channel()
2944 *
2945 * is_timeout_close: if B_TRUE, this function is called by the connection
2946 * reaper (refer to function ibd_rc_conn_timeout_call). When the connection
2947 * reaper calls ibd_rc_pas_close(), and if it finds that dl_bufs_outstanding
2948 * or chan->rcq_invoking is non-zero, then it can simply put that channel back
2949 * on the passive channels list and move on, since it might be an indication
2950 * that the channel became active again by the time we started it's cleanup.
2951 * It is costlier to do the cleanup and then reinitiate the channel
2952 * establishment and hence it will help to be conservative when we do the
2953 * cleanup.
2954 */
2955 int
2956 ibd_rc_pas_close(ibd_rc_chan_t *chan, boolean_t is_close_rc_chan,
2957 boolean_t is_timeout_close)
2958 {
2959 uint_t times;
2960 ibt_status_t ret;
2961
2962 ASSERT(chan != NULL);
2963 chan->state->rc_pas_close++;
2964
2965 switch (chan->chan_state) {
2966 case IBD_RC_STATE_PAS_ESTAB:
2967 if (is_timeout_close) {
2968 if ((chan->rcq_invoking != 0) ||
2969 ((!chan->state->rc_enable_srq) &&
2970 (chan->rx_wqe_list.dl_bufs_outstanding > 0))) {
2971 if (ibd_rc_re_add_to_pas_chan_list(chan)) {
2972 return (DDI_FAILURE);
2973 }
2974 }
2975 }
2976 /*
2977 * First, stop receive interrupts; this stops the
2978 * connection from handing up buffers to higher layers.
2979 * Wait for receive buffers to be returned; give up
2980 * after 5 seconds.
2981 */
2982 ibt_set_cq_handler(chan->rcq_hdl, 0, 0);
2983 /* Wait 0.01 second to let ibt_set_cq_handler() take effect */
2984 delay(drv_usectohz(10000));
2985 if (!chan->state->rc_enable_srq) {
2986 times = 50;
2987 while (chan->rx_wqe_list.dl_bufs_outstanding > 0) {
2988 delay(drv_usectohz(100000));
2989 if (--times == 0) {
2990 DPRINT(40, "ibd_rc_pas_close : "
2991 "reclaiming failed");
2992 ibd_rc_poll_rcq(chan, chan->rcq_hdl);
2993 ibt_set_cq_handler(chan->rcq_hdl,
2994 ibd_rc_rcq_handler,
2995 (void *)(uintptr_t)chan);
2996 return (DDI_FAILURE);
2997 }
2998 }
2999 }
3000 times = 50;
3001 while (chan->rcq_invoking != 0) {
3002 delay(drv_usectohz(100000));
3003 if (--times == 0) {
3004 DPRINT(40, "ibd_rc_pas_close : "
3005 "rcq handler is being invoked");
3006 chan->state->rc_pas_close_rcq_invoking++;
3007 break;
3008 }
3009 }
3010 ibt_set_cq_handler(chan->scq_hdl, 0, 0);
3011 chan->chan_state = IBD_RC_STATE_PAS_CLOSED;
3012 DPRINT(30, "ibd_rc_pas_close-1: close and free chan, "
3013 "chan_state=%d, chan=%p", chan->chan_state, chan);
3014 if (is_close_rc_chan) {
3015 ret = ibt_close_rc_channel(chan->chan_hdl,
3016 IBT_BLOCKING|IBT_NOCALLBACKS, NULL, 0, NULL, NULL,
3017 0);
3018 if (ret != IBT_SUCCESS) {
3019 DPRINT(40, "ibd_rc_pas_close: ibt_close_rc_"
3020 "channel() fail, chan=%p, ret=%d", chan,
3021 ret);
3022 } else {
3023 DPRINT(30, "ibd_rc_pas_close: ibt_close_rc_"
3024 "channel() succ, chan=%p", chan);
3025 }
3026 }
3027 ibd_rc_free_chan(chan);
3028 break;
3029 case IBD_RC_STATE_PAS_REQ_RECV:
3030 chan->chan_state = IBD_RC_STATE_PAS_CLOSED;
3031 (void) ibt_flush_channel(chan->chan_hdl);
3032 ibd_rc_free_chan(chan);
3033 break;
3034 default:
3035 DPRINT(40, "ibd_rc_pas_close: default, chan_state=%d, chan=%p",
3036 chan->chan_state, chan);
3037 }
3038 return (DDI_SUCCESS);
3039 }
3040
3041 /*
3042 * Passive Side:
3043 * Handle an incoming CM REQ from active side.
3044 *
3045 * If success, this function allocates an ibd_rc_chan_t, then
3046 * assigns it to "*ret_conn".
3047 */
3048 static ibt_cm_status_t
3049 ibd_rc_handle_req(void *arg, ibd_rc_chan_t **ret_conn,
3050 ibt_cm_event_t *ibt_cm_event, ibt_cm_return_args_t *ret_args,
3051 void *ret_priv_data)
3052 {
3053 ibd_rc_msg_hello_t *hello_msg;
3054 ibd_state_t *state = (ibd_state_t *)arg;
3055 ibd_rc_chan_t *chan;
3056
3057 if (ibd_rc_alloc_chan(&chan, state, B_FALSE) != IBT_SUCCESS) {
3058 DPRINT(40, "ibd_rc_handle_req: ibd_rc_alloc_chan() failed");
3059 return (IBT_CM_REJECT);
3060 }
3061
3062 ibd_rc_add_to_chan_list(&state->rc_pass_chan_list, chan);
3063
3064 ibt_set_chan_private(chan->chan_hdl, (void *)(uintptr_t)chan);
3065
3066 if (!state->rc_enable_srq) {
3067 if (ibd_rc_init_rxlist(chan) != DDI_SUCCESS) {
3068 ibd_rc_free_chan(chan);
3069 DPRINT(40, "ibd_rc_handle_req: ibd_rc_init_rxlist() "
3070 "failed");
3071 return (IBT_CM_REJECT);
3072 }
3073 }
3074
3075 ret_args->cm_ret.rep.cm_channel = chan->chan_hdl;
3076
3077 /* We don't do RDMA */
3078 ret_args->cm_ret.rep.cm_rdma_ra_out = 0;
3079 ret_args->cm_ret.rep.cm_rdma_ra_in = 0;
3080
3081 ret_args->cm_ret.rep.cm_rnr_retry_cnt = 7;
3082 ret_args->cm_ret_len = sizeof (ibd_rc_msg_hello_t);
3083
3084 hello_msg = (ibd_rc_msg_hello_t *)ibt_cm_event->cm_priv_data;
3085 DPRINT(30, "ibd_rc_handle_req(): peer qpn=0x%x, peer mtu=0x%x",
3086 ntohl(hello_msg->reserved_qpn), ntohl(hello_msg->rx_mtu));
3087
3088 hello_msg = (ibd_rc_msg_hello_t *)ret_priv_data;
3089 hello_msg->reserved_qpn = htonl(state->id_qpnum);
3090 hello_msg->rx_mtu = htonl(state->rc_mtu);
3091
3092 chan->chan_state = IBD_RC_STATE_PAS_REQ_RECV; /* ready to receive */
3093 *ret_conn = chan;
3094
3095 return (IBT_CM_ACCEPT);
3096 }
3097
3098 /*
3099 * ibd_rc_handle_act_estab -- handler for connection established completion
3100 * for active side.
3101 */
3102 static ibt_cm_status_t
3103 ibd_rc_handle_act_estab(ibd_ace_t *ace)
3104 {
3105 ibt_status_t result;
3106
3107 switch (ace->ac_chan->chan_state) {
3108 case IBD_RC_STATE_ACT_REP_RECV:
3109 ace->ac_chan->chan_state = IBD_RC_STATE_ACT_ESTAB;
3110 result = ibt_enable_cq_notify(ace->ac_chan->rcq_hdl,
3111 IBT_NEXT_COMPLETION);
3112 if (result != IBT_SUCCESS) {
3113 DPRINT(40, "ibd_rc_handle_act_estab: "
3114 "ibt_enable_cq_notify(rcq) "
3115 "failed: status %d", result);
3116 return (IBT_CM_REJECT);
3117 }
3118 break;
3119 default:
3120 DPRINT(40, "ibd_rc_handle_act_estab: default "
3121 "branch, act_state=%d", ace->ac_chan->chan_state);
3122 return (IBT_CM_REJECT);
3123 }
3124 return (IBT_CM_ACCEPT);
3125 }
3126
3127 /*
3128 * ibd_rc_handle_pas_estab -- handler for connection established completion
3129 * for passive side.
3130 */
3131 static ibt_cm_status_t
3132 ibd_rc_handle_pas_estab(ibd_rc_chan_t *chan)
3133 {
3134 ibt_status_t result;
3135
3136 switch (chan->chan_state) {
3137 case IBD_RC_STATE_PAS_REQ_RECV:
3138 chan->chan_state = IBD_RC_STATE_PAS_ESTAB;
3139
3140 result = ibt_enable_cq_notify(chan->rcq_hdl,
3141 IBT_NEXT_COMPLETION);
3142 if (result != IBT_SUCCESS) {
3143 DPRINT(40, "ibd_rc_handle_pas_estab: "
3144 "ibt_enable_cq_notify(rcq) "
3145 "failed: status %d", result);
3146 return (IBT_CM_REJECT);
3147 }
3148 break;
3149 default:
3150 DPRINT(40, "ibd_rc_handle_pas_estab: default "
3151 "branch, chan_state=%d", chan->chan_state);
3152 return (IBT_CM_REJECT);
3153 }
3154 return (IBT_CM_ACCEPT);
3155 }
3156
3157 /* ARGSUSED */
3158 static ibt_cm_status_t
3159 ibd_rc_dispatch_actv_mad(void *arg, ibt_cm_event_t *ibt_cm_event,
3160 ibt_cm_return_args_t *ret_args, void *ret_priv_data,
3161 ibt_priv_data_len_t ret_len_max)
3162 {
3163 ibt_cm_status_t result = IBT_CM_ACCEPT;
3164 ibd_ace_t *ace = (ibd_ace_t *)(uintptr_t)arg;
3165 ibd_rc_chan_t *rc_chan;
3166 ibd_state_t *state;
3167 ibd_rc_msg_hello_t *hello_ack;
3168
3169 switch (ibt_cm_event->cm_type) {
3170 case IBT_CM_EVENT_REP_RCV:
3171 ASSERT(ace->ac_chan != NULL);
3172 ASSERT(ace->ac_chan->chan_state == IBD_RC_STATE_INIT);
3173 hello_ack = (ibd_rc_msg_hello_t *)ibt_cm_event->cm_priv_data;
3174 DPRINT(30, "ibd_rc_handle_rep: hello_ack->mtu=0x%x, "
3175 "hello_ack->qpn=0x%x", ntohl(hello_ack->rx_mtu),
3176 ntohl(hello_ack->reserved_qpn));
3177 ace->ac_chan->chan_state = IBD_RC_STATE_ACT_REP_RECV;
3178 break;
3179
3180 case IBT_CM_EVENT_CONN_EST:
3181 ASSERT(ace->ac_chan != NULL);
3182 DPRINT(30, "ibd_rc_dispatch_actv_mad: IBT_CM_EVENT_CONN_EST, "
3183 "ace=%p, act_state=%d, chan=%p",
3184 ace, ace->ac_chan->chan_state, ace->ac_chan);
3185 result = ibd_rc_handle_act_estab(ace);
3186 break;
3187
3188 case IBT_CM_EVENT_CONN_CLOSED:
3189 rc_chan = ace->ac_chan;
3190 if (rc_chan == NULL) {
3191 DPRINT(40, "ibd_rc_dispatch_actv_mad: "
3192 "rc_chan==NULL, IBT_CM_EVENT_CONN_CLOSED");
3193 return (IBT_CM_ACCEPT);
3194 }
3195 state = rc_chan->state;
3196 mutex_enter(&state->id_ac_mutex);
3197 if ((rc_chan->chan_state == IBD_RC_STATE_ACT_ESTAB) &&
3198 ((ace = ibd_acache_find(state, &ace->ac_mac, B_FALSE, 0))
3199 != NULL) && (ace == rc_chan->ace)) {
3200 rc_chan->chan_state = IBD_RC_STATE_ACT_CLOSING;
3201 ASSERT(ace->ac_mce == NULL);
3202 INC_REF(ace, 1);
3203 IBD_ACACHE_PULLOUT_ACTIVE(state, ace);
3204 mutex_exit(&state->id_ac_mutex);
3205 DPRINT(30, "ibd_rc_dispatch_actv_mad: "
3206 "IBT_CM_EVENT_CONN_CLOSED, ace=%p, chan=%p, "
3207 "reason=%d", ace, rc_chan,
3208 ibt_cm_event->cm_event.closed);
3209 } else {
3210 mutex_exit(&state->id_ac_mutex);
3211 state->rc_act_close_simultaneous++;
3212 DPRINT(40, "ibd_rc_dispatch_actv_mad: other thread "
3213 "is closing it, IBT_CM_EVENT_CONN_CLOSED, "
3214 "chan_state=%d", rc_chan->chan_state);
3215 return (IBT_CM_ACCEPT);
3216 }
3217 ibd_rc_act_close(rc_chan, B_FALSE);
3218 mutex_enter(&state->id_ac_mutex);
3219 ace->ac_chan = NULL;
3220 ASSERT(ace->ac_ref != 0);
3221 atomic_dec_32(&ace->ac_ref);
3222 if ((ace->ac_ref == 0) || (ace->ac_ref == CYCLEVAL)) {
3223 IBD_ACACHE_INSERT_FREE(state, ace);
3224 ace->ac_ref = 0;
3225 } else {
3226 ace->ac_ref |= CYCLEVAL;
3227 state->rc_delay_ace_recycle++;
3228 }
3229 mutex_exit(&state->id_ac_mutex);
3230 break;
3231
3232 case IBT_CM_EVENT_FAILURE:
3233 DPRINT(30, "ibd_rc_dispatch_actv_mad: IBT_CM_EVENT_FAILURE,"
3234 "ace=%p, chan=%p, code: %d, msg: %d, reason=%d",
3235 ace, ace->ac_chan,
3236 ibt_cm_event->cm_event.failed.cf_code,
3237 ibt_cm_event->cm_event.failed.cf_msg,
3238 ibt_cm_event->cm_event.failed.cf_reason);
3239 /*
3240 * Don't need free resource here. The resource is freed
3241 * at function ibd_rc_connect()
3242 */
3243 break;
3244
3245 case IBT_CM_EVENT_MRA_RCV:
3246 DPRINT(40, "ibd_rc_dispatch_actv_mad: IBT_CM_EVENT_MRA_RCV");
3247 break;
3248 case IBT_CM_EVENT_LAP_RCV:
3249 DPRINT(40, "ibd_rc_dispatch_actv_mad: LAP message received");
3250 break;
3251 case IBT_CM_EVENT_APR_RCV:
3252 DPRINT(40, "ibd_rc_dispatch_actv_mad: APR message received");
3253 break;
3254 default:
3255 DPRINT(40, "ibd_rc_dispatch_actv_mad: default branch, "
3256 "ibt_cm_event->cm_type=%d", ibt_cm_event->cm_type);
3257 break;
3258 }
3259
3260 return (result);
3261 }
3262
3263 /* ARGSUSED */
3264 static ibt_cm_status_t
3265 ibd_rc_dispatch_pass_mad(void *arg, ibt_cm_event_t *ibt_cm_event,
3266 ibt_cm_return_args_t *ret_args, void *ret_priv_data,
3267 ibt_priv_data_len_t ret_len_max)
3268 {
3269 ibt_cm_status_t result = IBT_CM_ACCEPT;
3270 ibd_rc_chan_t *chan;
3271
3272 if (ibt_cm_event->cm_type == IBT_CM_EVENT_REQ_RCV) {
3273 DPRINT(30, "ibd_rc_dispatch_pass_mad: IBT_CM_EVENT_REQ_RCV,"
3274 "req_pkey=%x", ibt_cm_event->cm_event.req.req_pkey);
3275 /* Receive an incoming CM REQ from active side */
3276 result = ibd_rc_handle_req(arg, &chan, ibt_cm_event, ret_args,
3277 ret_priv_data);
3278 return (result);
3279 }
3280
3281 if (ibt_cm_event->cm_channel == 0) {
3282 DPRINT(30, "ibd_rc_dispatch_pass_mad: "
3283 "ERROR ibt_cm_event->cm_channel == 0");
3284 return (IBT_CM_REJECT);
3285 }
3286
3287 chan =
3288 (ibd_rc_chan_t *)ibt_get_chan_private(ibt_cm_event->cm_channel);
3289 if (chan == NULL) {
3290 DPRINT(40, "ibd_rc_dispatch_pass_mad: conn == 0");
3291 return (IBT_CM_REJECT);
3292 }
3293
3294 switch (ibt_cm_event->cm_type) {
3295 case IBT_CM_EVENT_CONN_EST:
3296 DPRINT(30, "ibd_rc_dispatch_pass_mad: IBT_CM_EVENT_CONN_EST, "
3297 "chan=%p", chan);
3298 result = ibd_rc_handle_pas_estab(chan);
3299 break;
3300 case IBT_CM_EVENT_CONN_CLOSED:
3301 DPRINT(30, "ibd_rc_dispatch_pass_mad: IBT_CM_EVENT_CONN_CLOSED,"
3302 " chan=%p, reason=%d", chan, ibt_cm_event->cm_event.closed);
3303 chan = ibd_rc_rm_from_chan_list(&chan->state->rc_pass_chan_list,
3304 chan);
3305 if (chan != NULL)
3306 (void) ibd_rc_pas_close(chan, B_FALSE, B_FALSE);
3307 break;
3308 case IBT_CM_EVENT_FAILURE:
3309 DPRINT(30, "ibd_rc_dispatch_pass_mad: IBT_CM_EVENT_FAILURE,"
3310 " chan=%p, code: %d, msg: %d, reason=%d", chan,
3311 ibt_cm_event->cm_event.failed.cf_code,
3312 ibt_cm_event->cm_event.failed.cf_msg,
3313 ibt_cm_event->cm_event.failed.cf_reason);
3314 chan = ibd_rc_rm_from_chan_list(&chan->state->rc_pass_chan_list,
3315 chan);
3316 if (chan != NULL)
3317 (void) ibd_rc_pas_close(chan, B_FALSE, B_FALSE);
3318 return (IBT_CM_ACCEPT);
3319 case IBT_CM_EVENT_MRA_RCV:
3320 DPRINT(40, "ibd_rc_dispatch_pass_mad: IBT_CM_EVENT_MRA_RCV");
3321 break;
3322 case IBT_CM_EVENT_LAP_RCV:
3323 DPRINT(40, "ibd_rc_dispatch_pass_mad: LAP message received");
3324 break;
3325 case IBT_CM_EVENT_APR_RCV:
3326 DPRINT(40, "ibd_rc_dispatch_pass_mad: APR message received");
3327 break;
3328 default:
3329 DPRINT(40, "ibd_rc_dispatch_pass_mad: default, type=%d, "
3330 "chan=%p", ibt_cm_event->cm_type, chan);
3331 break;
3332 }
3333
3334 return (result);
3335 }