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48 #include <linux/net.h>
49 #include <rdma/ib_smi.h>
53 #include "verbs_txreq.h"
57 * ud_loopback - handle send on loopback QPs
58 * @sqp: the sending QP
59 * @swqe: the send work request
61 * This is called from hfi1_make_ud_req() to forward a WQE addressed
63 * Note that the receive interrupt handler may be calling hfi1_ud_rcv()
64 * while this is being called.
66 static void ud_loopback(struct rvt_qp *sqp, struct rvt_swqe *swqe)
68 struct hfi1_ibport *ibp = to_iport(sqp->ibqp.device, sqp->port_num);
69 struct hfi1_pportdata *ppd;
71 struct ib_ah_attr *ah_attr;
73 struct rvt_sge_state ssge;
77 enum ib_qp_type sqptype, dqptype;
81 qp = rvt_lookup_qpn(ib_to_rvt(sqp->ibqp.device), &ibp->rvp,
82 swqe->ud_wr.remote_qpn);
84 ibp->rvp.n_pkt_drops++;
89 sqptype = sqp->ibqp.qp_type == IB_QPT_GSI ?
90 IB_QPT_UD : sqp->ibqp.qp_type;
91 dqptype = qp->ibqp.qp_type == IB_QPT_GSI ?
92 IB_QPT_UD : qp->ibqp.qp_type;
94 if (dqptype != sqptype ||
95 !(ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK)) {
96 ibp->rvp.n_pkt_drops++;
100 ah_attr = &ibah_to_rvtah(swqe->ud_wr.ah)->attr;
101 ppd = ppd_from_ibp(ibp);
103 if (qp->ibqp.qp_num > 1) {
106 u8 sc5 = ibp->sl_to_sc[ah_attr->sl];
108 pkey = hfi1_get_pkey(ibp, sqp->s_pkey_index);
109 slid = ppd->lid | (ah_attr->src_path_bits &
110 ((1 << ppd->lmc) - 1));
111 if (unlikely(ingress_pkey_check(ppd, pkey, sc5,
112 qp->s_pkey_index, slid))) {
113 hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_P_KEY, pkey,
115 sqp->ibqp.qp_num, qp->ibqp.qp_num,
116 slid, ah_attr->dlid);
122 * Check that the qkey matches (except for QP0, see 9.6.1.4.1).
123 * Qkeys with the high order bit set mean use the
124 * qkey from the QP context instead of the WR (see 10.2.5).
126 if (qp->ibqp.qp_num) {
129 qkey = (int)swqe->ud_wr.remote_qkey < 0 ?
130 sqp->qkey : swqe->ud_wr.remote_qkey;
131 if (unlikely(qkey != qp->qkey)) {
134 lid = ppd->lid | (ah_attr->src_path_bits &
135 ((1 << ppd->lmc) - 1));
136 hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_Q_KEY, qkey,
138 sqp->ibqp.qp_num, qp->ibqp.qp_num,
146 * A GRH is expected to precede the data even if not
147 * present on the wire.
149 length = swqe->length;
150 memset(&wc, 0, sizeof(wc));
151 wc.byte_len = length + sizeof(struct ib_grh);
153 if (swqe->wr.opcode == IB_WR_SEND_WITH_IMM) {
154 wc.wc_flags = IB_WC_WITH_IMM;
155 wc.ex.imm_data = swqe->wr.ex.imm_data;
158 spin_lock_irqsave(&qp->r_lock, flags);
161 * Get the next work request entry to find where to put the data.
163 if (qp->r_flags & RVT_R_REUSE_SGE) {
164 qp->r_flags &= ~RVT_R_REUSE_SGE;
168 ret = hfi1_rvt_get_rwqe(qp, 0);
170 hfi1_rc_error(qp, IB_WC_LOC_QP_OP_ERR);
174 if (qp->ibqp.qp_num == 0)
175 ibp->rvp.n_vl15_dropped++;
179 /* Silently drop packets which are too big. */
180 if (unlikely(wc.byte_len > qp->r_len)) {
181 qp->r_flags |= RVT_R_REUSE_SGE;
182 ibp->rvp.n_pkt_drops++;
186 if (ah_attr->ah_flags & IB_AH_GRH) {
187 hfi1_copy_sge(&qp->r_sge, &ah_attr->grh,
188 sizeof(struct ib_grh), 1, 0);
189 wc.wc_flags |= IB_WC_GRH;
191 hfi1_skip_sge(&qp->r_sge, sizeof(struct ib_grh), 1);
193 ssge.sg_list = swqe->sg_list + 1;
194 ssge.sge = *swqe->sg_list;
195 ssge.num_sge = swqe->wr.num_sge;
198 u32 len = sge->length;
202 if (len > sge->sge_length)
203 len = sge->sge_length;
204 WARN_ON_ONCE(len == 0);
205 hfi1_copy_sge(&qp->r_sge, sge->vaddr, len, 1, 0);
208 sge->sge_length -= len;
209 if (sge->sge_length == 0) {
211 *sge = *ssge.sg_list++;
212 } else if (sge->length == 0 && sge->mr->lkey) {
213 if (++sge->n >= RVT_SEGSZ) {
214 if (++sge->m >= sge->mr->mapsz)
219 sge->mr->map[sge->m]->segs[sge->n].vaddr;
221 sge->mr->map[sge->m]->segs[sge->n].length;
225 rvt_put_ss(&qp->r_sge);
226 if (!test_and_clear_bit(RVT_R_WRID_VALID, &qp->r_aflags))
228 wc.wr_id = qp->r_wr_id;
229 wc.status = IB_WC_SUCCESS;
230 wc.opcode = IB_WC_RECV;
232 wc.src_qp = sqp->ibqp.qp_num;
233 if (qp->ibqp.qp_type == IB_QPT_GSI || qp->ibqp.qp_type == IB_QPT_SMI) {
234 if (sqp->ibqp.qp_type == IB_QPT_GSI ||
235 sqp->ibqp.qp_type == IB_QPT_SMI)
236 wc.pkey_index = swqe->ud_wr.pkey_index;
238 wc.pkey_index = sqp->s_pkey_index;
242 wc.slid = ppd->lid | (ah_attr->src_path_bits & ((1 << ppd->lmc) - 1));
243 /* Check for loopback when the port lid is not set */
244 if (wc.slid == 0 && sqp->ibqp.qp_type == IB_QPT_GSI)
245 wc.slid = be16_to_cpu(IB_LID_PERMISSIVE);
247 wc.dlid_path_bits = ah_attr->dlid & ((1 << ppd->lmc) - 1);
248 wc.port_num = qp->port_num;
249 /* Signal completion event if the solicited bit is set. */
250 rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc,
251 swqe->wr.send_flags & IB_SEND_SOLICITED);
252 ibp->rvp.n_loop_pkts++;
254 spin_unlock_irqrestore(&qp->r_lock, flags);
260 * hfi1_make_ud_req - construct a UD request packet
263 * Assume s_lock is held.
265 * Return 1 if constructed; otherwise, return 0.
267 int hfi1_make_ud_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
269 struct hfi1_qp_priv *priv = qp->priv;
270 struct hfi1_other_headers *ohdr;
271 struct ib_ah_attr *ah_attr;
272 struct hfi1_pportdata *ppd;
273 struct hfi1_ibport *ibp;
274 struct rvt_swqe *wqe;
283 ps->s_txreq = get_txreq(ps->dev, qp);
284 if (IS_ERR(ps->s_txreq))
287 if (!(ib_rvt_state_ops[qp->state] & RVT_PROCESS_NEXT_SEND_OK)) {
288 if (!(ib_rvt_state_ops[qp->state] & RVT_FLUSH_SEND))
290 /* We are in the error state, flush the work request. */
291 smp_read_barrier_depends(); /* see post_one_send */
292 if (qp->s_last == ACCESS_ONCE(qp->s_head))
294 /* If DMAs are in progress, we can't flush immediately. */
295 if (iowait_sdma_pending(&priv->s_iowait)) {
296 qp->s_flags |= RVT_S_WAIT_DMA;
299 wqe = rvt_get_swqe_ptr(qp, qp->s_last);
300 hfi1_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR);
304 /* see post_one_send() */
305 smp_read_barrier_depends();
306 if (qp->s_cur == ACCESS_ONCE(qp->s_head))
309 wqe = rvt_get_swqe_ptr(qp, qp->s_cur);
310 next_cur = qp->s_cur + 1;
311 if (next_cur >= qp->s_size)
314 /* Construct the header. */
315 ibp = to_iport(qp->ibqp.device, qp->port_num);
316 ppd = ppd_from_ibp(ibp);
317 ah_attr = &ibah_to_rvtah(wqe->ud_wr.ah)->attr;
318 if (ah_attr->dlid < be16_to_cpu(IB_MULTICAST_LID_BASE) ||
319 ah_attr->dlid == be16_to_cpu(IB_LID_PERMISSIVE)) {
320 lid = ah_attr->dlid & ~((1 << ppd->lmc) - 1);
321 if (unlikely(!loopback &&
323 (lid == be16_to_cpu(IB_LID_PERMISSIVE) &&
324 qp->ibqp.qp_type == IB_QPT_GSI)))) {
325 unsigned long tflags = ps->flags;
327 * If DMAs are in progress, we can't generate
328 * a completion for the loopback packet since
329 * it would be out of order.
330 * Instead of waiting, we could queue a
331 * zero length descriptor so we get a callback.
333 if (iowait_sdma_pending(&priv->s_iowait)) {
334 qp->s_flags |= RVT_S_WAIT_DMA;
337 qp->s_cur = next_cur;
338 spin_unlock_irqrestore(&qp->s_lock, tflags);
339 ud_loopback(qp, wqe);
340 spin_lock_irqsave(&qp->s_lock, tflags);
342 hfi1_send_complete(qp, wqe, IB_WC_SUCCESS);
347 qp->s_cur = next_cur;
348 extra_bytes = -wqe->length & 3;
349 nwords = (wqe->length + extra_bytes) >> 2;
351 /* header size in 32-bit words LRH+BTH+DETH = (8+12+8)/4. */
353 qp->s_cur_size = wqe->length;
354 qp->s_cur_sge = &qp->s_sge;
355 qp->s_srate = ah_attr->static_rate;
356 qp->srate_mbps = ib_rate_to_mbps(qp->s_srate);
358 qp->s_sge.sge = wqe->sg_list[0];
359 qp->s_sge.sg_list = wqe->sg_list + 1;
360 qp->s_sge.num_sge = wqe->wr.num_sge;
361 qp->s_sge.total_len = wqe->length;
363 if (ah_attr->ah_flags & IB_AH_GRH) {
364 /* Header size in 32-bit words. */
365 qp->s_hdrwords += hfi1_make_grh(ibp,
366 &ps->s_txreq->phdr.hdr.u.l.grh,
368 qp->s_hdrwords, nwords);
370 ohdr = &ps->s_txreq->phdr.hdr.u.l.oth;
372 * Don't worry about sending to locally attached multicast
373 * QPs. It is unspecified by the spec. what happens.
376 /* Header size in 32-bit words. */
378 ohdr = &ps->s_txreq->phdr.hdr.u.oth;
380 if (wqe->wr.opcode == IB_WR_SEND_WITH_IMM) {
382 ohdr->u.ud.imm_data = wqe->wr.ex.imm_data;
383 bth0 = IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE << 24;
385 bth0 = IB_OPCODE_UD_SEND_ONLY << 24;
387 sc5 = ibp->sl_to_sc[ah_attr->sl];
388 lrh0 |= (ah_attr->sl & 0xf) << 4;
389 if (qp->ibqp.qp_type == IB_QPT_SMI) {
390 lrh0 |= 0xF000; /* Set VL (see ch. 13.5.3.1) */
393 lrh0 |= (sc5 & 0xf) << 12;
396 priv->s_sde = qp_to_sdma_engine(qp, priv->s_sc);
397 ps->s_txreq->sde = priv->s_sde;
398 priv->s_sendcontext = qp_to_send_context(qp, priv->s_sc);
399 ps->s_txreq->psc = priv->s_sendcontext;
400 ps->s_txreq->phdr.hdr.lrh[0] = cpu_to_be16(lrh0);
401 ps->s_txreq->phdr.hdr.lrh[1] = cpu_to_be16(ah_attr->dlid);
402 ps->s_txreq->phdr.hdr.lrh[2] =
403 cpu_to_be16(qp->s_hdrwords + nwords + SIZE_OF_CRC);
404 if (ah_attr->dlid == be16_to_cpu(IB_LID_PERMISSIVE)) {
405 ps->s_txreq->phdr.hdr.lrh[3] = IB_LID_PERMISSIVE;
409 lid |= ah_attr->src_path_bits & ((1 << ppd->lmc) - 1);
410 ps->s_txreq->phdr.hdr.lrh[3] = cpu_to_be16(lid);
412 ps->s_txreq->phdr.hdr.lrh[3] = IB_LID_PERMISSIVE;
415 if (wqe->wr.send_flags & IB_SEND_SOLICITED)
416 bth0 |= IB_BTH_SOLICITED;
417 bth0 |= extra_bytes << 20;
418 if (qp->ibqp.qp_type == IB_QPT_GSI || qp->ibqp.qp_type == IB_QPT_SMI)
419 bth0 |= hfi1_get_pkey(ibp, wqe->ud_wr.pkey_index);
421 bth0 |= hfi1_get_pkey(ibp, qp->s_pkey_index);
422 ohdr->bth[0] = cpu_to_be32(bth0);
423 ohdr->bth[1] = cpu_to_be32(wqe->ud_wr.remote_qpn);
424 ohdr->bth[2] = cpu_to_be32(mask_psn(wqe->psn));
426 * Qkeys with the high order bit set mean use the
427 * qkey from the QP context instead of the WR (see 10.2.5).
429 ohdr->u.ud.deth[0] = cpu_to_be32((int)wqe->ud_wr.remote_qkey < 0 ?
430 qp->qkey : wqe->ud_wr.remote_qkey);
431 ohdr->u.ud.deth[1] = cpu_to_be32(qp->ibqp.qp_num);
433 priv->s_hdr->ahgcount = 0;
434 priv->s_hdr->ahgidx = 0;
435 priv->s_hdr->tx_flags = 0;
436 priv->s_hdr->sde = NULL;
438 ps->s_txreq->hdr_dwords = qp->s_hdrwords + 2;
443 hfi1_put_txreq(ps->s_txreq);
448 hfi1_put_txreq(ps->s_txreq);
452 qp->s_flags &= ~RVT_S_BUSY;
458 * Hardware can't check this so we do it here.
460 * This is a slightly different algorithm than the standard pkey check. It
461 * special cases the management keys and allows for 0x7fff and 0xffff to be in
462 * the table at the same time.
464 * @returns the index found or -1 if not found
466 int hfi1_lookup_pkey_idx(struct hfi1_ibport *ibp, u16 pkey)
468 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
471 if (pkey == FULL_MGMT_P_KEY || pkey == LIM_MGMT_P_KEY) {
472 unsigned lim_idx = -1;
474 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); ++i) {
475 /* here we look for an exact match */
476 if (ppd->pkeys[i] == pkey)
478 if (ppd->pkeys[i] == LIM_MGMT_P_KEY)
482 /* did not find 0xffff return 0x7fff idx if found */
483 if (pkey == FULL_MGMT_P_KEY)
490 pkey &= 0x7fff; /* remove limited/full membership bit */
492 for (i = 0; i < ARRAY_SIZE(ppd->pkeys); ++i)
493 if ((ppd->pkeys[i] & 0x7fff) == pkey)
497 * Should not get here, this means hardware failed to validate pkeys.
502 void return_cnp(struct hfi1_ibport *ibp, struct rvt_qp *qp, u32 remote_qpn,
503 u32 pkey, u32 slid, u32 dlid, u8 sc5,
504 const struct ib_grh *old_grh)
506 u64 pbc, pbc_flags = 0;
507 u32 bth0, plen, vl, hwords = 5;
509 u8 sl = ibp->sc_to_sl[sc5];
510 struct hfi1_ib_header hdr;
511 struct hfi1_other_headers *ohdr;
512 struct pio_buf *pbuf;
513 struct send_context *ctxt = qp_to_send_context(qp, sc5);
514 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
517 struct ib_grh *grh = &hdr.u.l.grh;
519 grh->version_tclass_flow = old_grh->version_tclass_flow;
520 grh->paylen = cpu_to_be16((hwords - 2 + SIZE_OF_CRC) << 2);
521 grh->hop_limit = 0xff;
522 grh->sgid = old_grh->dgid;
523 grh->dgid = old_grh->sgid;
526 hwords += sizeof(struct ib_grh) / sizeof(u32);
532 lrh0 |= (sc5 & 0xf) << 12 | sl << 4;
534 bth0 = pkey | (IB_OPCODE_CNP << 24);
535 ohdr->bth[0] = cpu_to_be32(bth0);
537 ohdr->bth[1] = cpu_to_be32(remote_qpn | (1 << HFI1_BECN_SHIFT));
538 ohdr->bth[2] = 0; /* PSN 0 */
540 hdr.lrh[0] = cpu_to_be16(lrh0);
541 hdr.lrh[1] = cpu_to_be16(dlid);
542 hdr.lrh[2] = cpu_to_be16(hwords + SIZE_OF_CRC);
543 hdr.lrh[3] = cpu_to_be16(slid);
545 plen = 2 /* PBC */ + hwords;
546 pbc_flags |= (!!(sc5 & 0x10)) << PBC_DC_INFO_SHIFT;
547 vl = sc_to_vlt(ppd->dd, sc5);
548 pbc = create_pbc(ppd, pbc_flags, qp->srate_mbps, vl, plen);
550 pbuf = sc_buffer_alloc(ctxt, plen, NULL, NULL);
552 ppd->dd->pio_inline_send(ppd->dd, pbuf, pbc,
558 * opa_smp_check() - Do the regular pkey checking, and the additional
559 * checks for SMPs specified in OPAv1 rev 0.90, section 9.10.26
560 * ("SMA Packet Checks").
563 * - Checks are done using the pkey directly from the packet's BTH,
564 * and specifically _not_ the pkey that we attach to the completion,
565 * which may be different.
566 * - These checks are specifically for "non-local" SMPs (i.e., SMPs
567 * which originated on another node). SMPs which are sent from, and
568 * destined to this node are checked in opa_local_smp_check().
570 * At the point where opa_smp_check() is called, we know:
571 * - destination QP is QP0
573 * opa_smp_check() returns 0 if all checks succeed, 1 otherwise.
575 static int opa_smp_check(struct hfi1_ibport *ibp, u16 pkey, u8 sc5,
576 struct rvt_qp *qp, u16 slid, struct opa_smp *smp)
578 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
581 * I don't think it's possible for us to get here with sc != 0xf,
582 * but check it to be certain.
587 if (rcv_pkey_check(ppd, pkey, sc5, slid))
591 * At this point we know (and so don't need to check again) that
592 * the pkey is either LIM_MGMT_P_KEY, or FULL_MGMT_P_KEY
593 * (see ingress_pkey_check).
595 if (smp->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE &&
596 smp->mgmt_class != IB_MGMT_CLASS_SUBN_LID_ROUTED) {
597 ingress_pkey_table_fail(ppd, pkey, slid);
602 * SMPs fall into one of four (disjoint) categories:
603 * SMA request, SMA response, trap, or trap repress.
604 * Our response depends, in part, on which type of
605 * SMP we're processing.
607 * If this is not an SMA request, or trap repress:
608 * - accept MAD if the port is running an SM
609 * - pkey == FULL_MGMT_P_KEY =>
610 * reply with unsupported method (i.e., just mark
611 * the smp's status field here, and let it be
612 * processed normally)
613 * - pkey != LIM_MGMT_P_KEY =>
614 * increment port recv constraint errors, drop MAD
615 * If this is an SMA request or trap repress:
616 * - pkey != FULL_MGMT_P_KEY =>
617 * increment port recv constraint errors, drop MAD
619 switch (smp->method) {
620 case IB_MGMT_METHOD_GET:
621 case IB_MGMT_METHOD_SET:
622 case IB_MGMT_METHOD_REPORT:
623 case IB_MGMT_METHOD_TRAP_REPRESS:
624 if (pkey != FULL_MGMT_P_KEY) {
625 ingress_pkey_table_fail(ppd, pkey, slid);
629 case IB_MGMT_METHOD_SEND:
630 case IB_MGMT_METHOD_TRAP:
631 case IB_MGMT_METHOD_GET_RESP:
632 case IB_MGMT_METHOD_REPORT_RESP:
633 if (ibp->rvp.port_cap_flags & IB_PORT_SM)
635 if (pkey == FULL_MGMT_P_KEY) {
636 smp->status |= IB_SMP_UNSUP_METHOD;
639 if (pkey != LIM_MGMT_P_KEY) {
640 ingress_pkey_table_fail(ppd, pkey, slid);
651 * hfi1_ud_rcv - receive an incoming UD packet
652 * @ibp: the port the packet came in on
653 * @hdr: the packet header
654 * @rcv_flags: flags relevant to rcv processing
655 * @data: the packet data
656 * @tlen: the packet length
657 * @qp: the QP the packet came on
659 * This is called from qp_rcv() to process an incoming UD packet
661 * Called at interrupt level.
663 void hfi1_ud_rcv(struct hfi1_packet *packet)
665 struct hfi1_other_headers *ohdr = packet->ohdr;
667 u32 hdrsize = packet->hlen;
673 int mgmt_pkey_idx = -1;
674 struct hfi1_ibport *ibp = &packet->rcd->ppd->ibport_data;
675 struct hfi1_ib_header *hdr = packet->hdr;
676 u32 rcv_flags = packet->rcv_flags;
677 void *data = packet->ebuf;
678 u32 tlen = packet->tlen;
679 struct rvt_qp *qp = packet->qp;
680 bool has_grh = rcv_flags & HFI1_HAS_GRH;
681 bool sc4_bit = has_sc4_bit(packet);
685 struct ib_grh *grh = NULL;
687 qkey = be32_to_cpu(ohdr->u.ud.deth[0]);
688 src_qp = be32_to_cpu(ohdr->u.ud.deth[1]) & RVT_QPN_MASK;
689 dlid = be16_to_cpu(hdr->lrh[1]);
690 is_mcast = (dlid > be16_to_cpu(IB_MULTICAST_LID_BASE)) &&
691 (dlid != be16_to_cpu(IB_LID_PERMISSIVE));
692 bth1 = be32_to_cpu(ohdr->bth[1]);
693 if (unlikely(bth1 & HFI1_BECN_SMASK)) {
695 * In pre-B0 h/w the CNP_OPCODE is handled via an
698 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
699 u32 lqpn = be32_to_cpu(ohdr->bth[1]) & RVT_QPN_MASK;
702 sc5 = (be16_to_cpu(hdr->lrh[0]) >> 12) & 0xf;
704 sl = ibp->sc_to_sl[sc5];
706 process_becn(ppd, sl, 0, lqpn, 0, IB_CC_SVCTYPE_UD);
710 * The opcode is in the low byte when its in network order
711 * (top byte when in host order).
713 opcode = be32_to_cpu(ohdr->bth[0]) >> 24;
716 pkey = (u16)be32_to_cpu(ohdr->bth[0]);
718 if (!is_mcast && (opcode != IB_OPCODE_CNP) && bth1 & HFI1_FECN_SMASK) {
719 u16 slid = be16_to_cpu(hdr->lrh[3]);
722 sc5 = (be16_to_cpu(hdr->lrh[0]) >> 12) & 0xf;
725 return_cnp(ibp, qp, src_qp, pkey, dlid, slid, sc5, grh);
728 * Get the number of bytes the message was padded by
729 * and drop incomplete packets.
731 pad = (be32_to_cpu(ohdr->bth[0]) >> 20) & 3;
732 if (unlikely(tlen < (hdrsize + pad + 4)))
735 tlen -= hdrsize + pad + 4;
738 * Check that the permissive LID is only used on QP0
739 * and the QKEY matches (see 9.6.1.4.1 and 9.6.1.5.1).
741 if (qp->ibqp.qp_num) {
742 if (unlikely(hdr->lrh[1] == IB_LID_PERMISSIVE ||
743 hdr->lrh[3] == IB_LID_PERMISSIVE))
745 if (qp->ibqp.qp_num > 1) {
746 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
750 sc5 = (be16_to_cpu(hdr->lrh[0]) >> 12) & 0xf;
753 slid = be16_to_cpu(hdr->lrh[3]);
754 if (unlikely(rcv_pkey_check(ppd, pkey, sc5, slid))) {
756 * Traps will not be sent for packets dropped
757 * by the HW. This is fine, as sending trap
758 * for invalid pkeys is optional according to
759 * IB spec (release 1.3, section 10.9.4)
761 hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_P_KEY,
763 (be16_to_cpu(hdr->lrh[0]) >> 4) &
765 src_qp, qp->ibqp.qp_num,
766 be16_to_cpu(hdr->lrh[3]),
767 be16_to_cpu(hdr->lrh[1]));
772 mgmt_pkey_idx = hfi1_lookup_pkey_idx(ibp, pkey);
773 if (mgmt_pkey_idx < 0)
776 if (unlikely(qkey != qp->qkey)) {
777 hfi1_bad_pqkey(ibp, OPA_TRAP_BAD_Q_KEY, qkey,
778 (be16_to_cpu(hdr->lrh[0]) >> 4) & 0xF,
779 src_qp, qp->ibqp.qp_num,
780 be16_to_cpu(hdr->lrh[3]),
781 be16_to_cpu(hdr->lrh[1]));
784 /* Drop invalid MAD packets (see 13.5.3.1). */
785 if (unlikely(qp->ibqp.qp_num == 1 &&
787 (be16_to_cpu(hdr->lrh[0]) >> 12) == 15)))
790 /* Received on QP0, and so by definition, this is an SMP */
791 struct opa_smp *smp = (struct opa_smp *)data;
792 u16 slid = be16_to_cpu(hdr->lrh[3]);
795 sc5 = (be16_to_cpu(hdr->lrh[0]) >> 12) & 0xf;
798 if (opa_smp_check(ibp, pkey, sc5, qp, slid, smp))
803 if ((hdr->lrh[1] == IB_LID_PERMISSIVE ||
804 hdr->lrh[3] == IB_LID_PERMISSIVE) &&
805 smp->mgmt_class != IB_MGMT_CLASS_SUBN_DIRECTED_ROUTE)
808 /* look up SMI pkey */
809 mgmt_pkey_idx = hfi1_lookup_pkey_idx(ibp, pkey);
810 if (mgmt_pkey_idx < 0)
814 if (qp->ibqp.qp_num > 1 &&
815 opcode == IB_OPCODE_UD_SEND_ONLY_WITH_IMMEDIATE) {
816 wc.ex.imm_data = ohdr->u.ud.imm_data;
817 wc.wc_flags = IB_WC_WITH_IMM;
819 } else if (opcode == IB_OPCODE_UD_SEND_ONLY) {
827 * A GRH is expected to precede the data even if not
828 * present on the wire.
830 wc.byte_len = tlen + sizeof(struct ib_grh);
833 * Get the next work request entry to find where to put the data.
835 if (qp->r_flags & RVT_R_REUSE_SGE) {
836 qp->r_flags &= ~RVT_R_REUSE_SGE;
840 ret = hfi1_rvt_get_rwqe(qp, 0);
842 hfi1_rc_error(qp, IB_WC_LOC_QP_OP_ERR);
846 if (qp->ibqp.qp_num == 0)
847 ibp->rvp.n_vl15_dropped++;
851 /* Silently drop packets which are too big. */
852 if (unlikely(wc.byte_len > qp->r_len)) {
853 qp->r_flags |= RVT_R_REUSE_SGE;
857 hfi1_copy_sge(&qp->r_sge, &hdr->u.l.grh,
858 sizeof(struct ib_grh), 1, 0);
859 wc.wc_flags |= IB_WC_GRH;
861 hfi1_skip_sge(&qp->r_sge, sizeof(struct ib_grh), 1);
863 hfi1_copy_sge(&qp->r_sge, data, wc.byte_len - sizeof(struct ib_grh),
865 rvt_put_ss(&qp->r_sge);
866 if (!test_and_clear_bit(RVT_R_WRID_VALID, &qp->r_aflags))
868 wc.wr_id = qp->r_wr_id;
869 wc.status = IB_WC_SUCCESS;
870 wc.opcode = IB_WC_RECV;
875 if (qp->ibqp.qp_type == IB_QPT_GSI ||
876 qp->ibqp.qp_type == IB_QPT_SMI) {
877 if (mgmt_pkey_idx < 0) {
878 if (net_ratelimit()) {
879 struct hfi1_pportdata *ppd = ppd_from_ibp(ibp);
880 struct hfi1_devdata *dd = ppd->dd;
882 dd_dev_err(dd, "QP type %d mgmt_pkey_idx < 0 and packet not dropped???\n",
887 wc.pkey_index = (unsigned)mgmt_pkey_idx;
892 wc.slid = be16_to_cpu(hdr->lrh[3]);
893 sc = (be16_to_cpu(hdr->lrh[0]) >> 12) & 0xf;
895 wc.sl = ibp->sc_to_sl[sc];
898 * Save the LMC lower bits if the destination LID is a unicast LID.
900 wc.dlid_path_bits = dlid >= be16_to_cpu(IB_MULTICAST_LID_BASE) ? 0 :
901 dlid & ((1 << ppd_from_ibp(ibp)->lmc) - 1);
902 wc.port_num = qp->port_num;
903 /* Signal completion event if the solicited bit is set. */
904 rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc,
906 cpu_to_be32(IB_BTH_SOLICITED)) != 0);
910 ibp->rvp.n_pkt_drops++;