v4.19.13 snapshot.
diff --git a/drivers/infiniband/hw/hfi1/uc.c b/drivers/infiniband/hw/hfi1/uc.c
new file mode 100644
index 0000000..e254dce
--- /dev/null
+++ b/drivers/infiniband/hw/hfi1/uc.c
@@ -0,0 +1,588 @@
+/*
+ * Copyright(c) 2015 - 2018 Intel Corporation.
+ *
+ * This file is provided under a dual BSD/GPLv2 license. When using or
+ * redistributing this file, you may do so under either license.
+ *
+ * GPL LICENSE SUMMARY
+ *
+ * This program is free software; you can redistribute it and/or modify
+ * it under the terms of version 2 of the GNU General Public License as
+ * published by the Free Software Foundation.
+ *
+ * This program is distributed in the hope that it will be useful, but
+ * WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+ * General Public License for more details.
+ *
+ * BSD LICENSE
+ *
+ * Redistribution and use in source and binary forms, with or without
+ * modification, are permitted provided that the following conditions
+ * are met:
+ *
+ * - Redistributions of source code must retain the above copyright
+ * notice, this list of conditions and the following disclaimer.
+ * - Redistributions in binary form must reproduce the above copyright
+ * notice, this list of conditions and the following disclaimer in
+ * the documentation and/or other materials provided with the
+ * distribution.
+ * - Neither the name of Intel Corporation nor the names of its
+ * contributors may be used to endorse or promote products derived
+ * from this software without specific prior written permission.
+ *
+ * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
+ * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
+ * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
+ * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
+ * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
+ * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
+ * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
+ * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
+ * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
+ * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
+ * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
+ *
+ */
+
+#include "hfi.h"
+#include "verbs_txreq.h"
+#include "qp.h"
+
+/* cut down ridiculously long IB macro names */
+#define OP(x) UC_OP(x)
+
+/**
+ * hfi1_make_uc_req - construct a request packet (SEND, RDMA write)
+ * @qp: a pointer to the QP
+ *
+ * Assume s_lock is held.
+ *
+ * Return 1 if constructed; otherwise, return 0.
+ */
+int hfi1_make_uc_req(struct rvt_qp *qp, struct hfi1_pkt_state *ps)
+{
+ struct hfi1_qp_priv *priv = qp->priv;
+ struct ib_other_headers *ohdr;
+ struct rvt_swqe *wqe;
+ u32 hwords;
+ u32 bth0 = 0;
+ u32 len;
+ u32 pmtu = qp->pmtu;
+ int middle = 0;
+
+ ps->s_txreq = get_txreq(ps->dev, qp);
+ if (!ps->s_txreq)
+ goto bail_no_tx;
+
+ if (!(ib_rvt_state_ops[qp->state] & RVT_PROCESS_SEND_OK)) {
+ if (!(ib_rvt_state_ops[qp->state] & RVT_FLUSH_SEND))
+ goto bail;
+ /* We are in the error state, flush the work request. */
+ if (qp->s_last == READ_ONCE(qp->s_head))
+ goto bail;
+ /* If DMAs are in progress, we can't flush immediately. */
+ if (iowait_sdma_pending(&priv->s_iowait)) {
+ qp->s_flags |= RVT_S_WAIT_DMA;
+ goto bail;
+ }
+ clear_ahg(qp);
+ wqe = rvt_get_swqe_ptr(qp, qp->s_last);
+ hfi1_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR);
+ goto done_free_tx;
+ }
+
+ if (priv->hdr_type == HFI1_PKT_TYPE_9B) {
+ /* header size in 32-bit words LRH+BTH = (8+12)/4. */
+ hwords = 5;
+ if (rdma_ah_get_ah_flags(&qp->remote_ah_attr) & IB_AH_GRH)
+ ohdr = &ps->s_txreq->phdr.hdr.ibh.u.l.oth;
+ else
+ ohdr = &ps->s_txreq->phdr.hdr.ibh.u.oth;
+ } else {
+ /* header size in 32-bit words 16B LRH+BTH = (16+12)/4. */
+ hwords = 7;
+ if ((rdma_ah_get_ah_flags(&qp->remote_ah_attr) & IB_AH_GRH) &&
+ (hfi1_check_mcast(rdma_ah_get_dlid(&qp->remote_ah_attr))))
+ ohdr = &ps->s_txreq->phdr.hdr.opah.u.l.oth;
+ else
+ ohdr = &ps->s_txreq->phdr.hdr.opah.u.oth;
+ }
+
+ /* Get the next send request. */
+ wqe = rvt_get_swqe_ptr(qp, qp->s_cur);
+ qp->s_wqe = NULL;
+ switch (qp->s_state) {
+ default:
+ if (!(ib_rvt_state_ops[qp->state] &
+ RVT_PROCESS_NEXT_SEND_OK))
+ goto bail;
+ /* Check if send work queue is empty. */
+ if (qp->s_cur == READ_ONCE(qp->s_head)) {
+ clear_ahg(qp);
+ goto bail;
+ }
+ /*
+ * Local operations are processed immediately
+ * after all prior requests have completed.
+ */
+ if (wqe->wr.opcode == IB_WR_REG_MR ||
+ wqe->wr.opcode == IB_WR_LOCAL_INV) {
+ int local_ops = 0;
+ int err = 0;
+
+ if (qp->s_last != qp->s_cur)
+ goto bail;
+ if (++qp->s_cur == qp->s_size)
+ qp->s_cur = 0;
+ if (!(wqe->wr.send_flags & RVT_SEND_COMPLETION_ONLY)) {
+ err = rvt_invalidate_rkey(
+ qp, wqe->wr.ex.invalidate_rkey);
+ local_ops = 1;
+ }
+ hfi1_send_complete(qp, wqe, err ? IB_WC_LOC_PROT_ERR
+ : IB_WC_SUCCESS);
+ if (local_ops)
+ atomic_dec(&qp->local_ops_pending);
+ goto done_free_tx;
+ }
+ /*
+ * Start a new request.
+ */
+ qp->s_psn = wqe->psn;
+ qp->s_sge.sge = wqe->sg_list[0];
+ qp->s_sge.sg_list = wqe->sg_list + 1;
+ qp->s_sge.num_sge = wqe->wr.num_sge;
+ qp->s_sge.total_len = wqe->length;
+ len = wqe->length;
+ qp->s_len = len;
+ switch (wqe->wr.opcode) {
+ case IB_WR_SEND:
+ case IB_WR_SEND_WITH_IMM:
+ if (len > pmtu) {
+ qp->s_state = OP(SEND_FIRST);
+ len = pmtu;
+ break;
+ }
+ if (wqe->wr.opcode == IB_WR_SEND) {
+ qp->s_state = OP(SEND_ONLY);
+ } else {
+ qp->s_state =
+ OP(SEND_ONLY_WITH_IMMEDIATE);
+ /* Immediate data comes after the BTH */
+ ohdr->u.imm_data = wqe->wr.ex.imm_data;
+ hwords += 1;
+ }
+ if (wqe->wr.send_flags & IB_SEND_SOLICITED)
+ bth0 |= IB_BTH_SOLICITED;
+ qp->s_wqe = wqe;
+ if (++qp->s_cur >= qp->s_size)
+ qp->s_cur = 0;
+ break;
+
+ case IB_WR_RDMA_WRITE:
+ case IB_WR_RDMA_WRITE_WITH_IMM:
+ ohdr->u.rc.reth.vaddr =
+ cpu_to_be64(wqe->rdma_wr.remote_addr);
+ ohdr->u.rc.reth.rkey =
+ cpu_to_be32(wqe->rdma_wr.rkey);
+ ohdr->u.rc.reth.length = cpu_to_be32(len);
+ hwords += sizeof(struct ib_reth) / 4;
+ if (len > pmtu) {
+ qp->s_state = OP(RDMA_WRITE_FIRST);
+ len = pmtu;
+ break;
+ }
+ if (wqe->wr.opcode == IB_WR_RDMA_WRITE) {
+ qp->s_state = OP(RDMA_WRITE_ONLY);
+ } else {
+ qp->s_state =
+ OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE);
+ /* Immediate data comes after the RETH */
+ ohdr->u.rc.imm_data = wqe->wr.ex.imm_data;
+ hwords += 1;
+ if (wqe->wr.send_flags & IB_SEND_SOLICITED)
+ bth0 |= IB_BTH_SOLICITED;
+ }
+ qp->s_wqe = wqe;
+ if (++qp->s_cur >= qp->s_size)
+ qp->s_cur = 0;
+ break;
+
+ default:
+ goto bail;
+ }
+ break;
+
+ case OP(SEND_FIRST):
+ qp->s_state = OP(SEND_MIDDLE);
+ /* FALLTHROUGH */
+ case OP(SEND_MIDDLE):
+ len = qp->s_len;
+ if (len > pmtu) {
+ len = pmtu;
+ middle = HFI1_CAP_IS_KSET(SDMA_AHG);
+ break;
+ }
+ if (wqe->wr.opcode == IB_WR_SEND) {
+ qp->s_state = OP(SEND_LAST);
+ } else {
+ qp->s_state = OP(SEND_LAST_WITH_IMMEDIATE);
+ /* Immediate data comes after the BTH */
+ ohdr->u.imm_data = wqe->wr.ex.imm_data;
+ hwords += 1;
+ }
+ if (wqe->wr.send_flags & IB_SEND_SOLICITED)
+ bth0 |= IB_BTH_SOLICITED;
+ qp->s_wqe = wqe;
+ if (++qp->s_cur >= qp->s_size)
+ qp->s_cur = 0;
+ break;
+
+ case OP(RDMA_WRITE_FIRST):
+ qp->s_state = OP(RDMA_WRITE_MIDDLE);
+ /* FALLTHROUGH */
+ case OP(RDMA_WRITE_MIDDLE):
+ len = qp->s_len;
+ if (len > pmtu) {
+ len = pmtu;
+ middle = HFI1_CAP_IS_KSET(SDMA_AHG);
+ break;
+ }
+ if (wqe->wr.opcode == IB_WR_RDMA_WRITE) {
+ qp->s_state = OP(RDMA_WRITE_LAST);
+ } else {
+ qp->s_state =
+ OP(RDMA_WRITE_LAST_WITH_IMMEDIATE);
+ /* Immediate data comes after the BTH */
+ ohdr->u.imm_data = wqe->wr.ex.imm_data;
+ hwords += 1;
+ if (wqe->wr.send_flags & IB_SEND_SOLICITED)
+ bth0 |= IB_BTH_SOLICITED;
+ }
+ qp->s_wqe = wqe;
+ if (++qp->s_cur >= qp->s_size)
+ qp->s_cur = 0;
+ break;
+ }
+ qp->s_len -= len;
+ ps->s_txreq->hdr_dwords = hwords;
+ ps->s_txreq->sde = priv->s_sde;
+ ps->s_txreq->ss = &qp->s_sge;
+ ps->s_txreq->s_cur_size = len;
+ hfi1_make_ruc_header(qp, ohdr, bth0 | (qp->s_state << 24),
+ mask_psn(qp->s_psn++), middle, ps);
+ return 1;
+
+done_free_tx:
+ hfi1_put_txreq(ps->s_txreq);
+ ps->s_txreq = NULL;
+ return 1;
+
+bail:
+ hfi1_put_txreq(ps->s_txreq);
+
+bail_no_tx:
+ ps->s_txreq = NULL;
+ qp->s_flags &= ~RVT_S_BUSY;
+ return 0;
+}
+
+/**
+ * hfi1_uc_rcv - handle an incoming UC packet
+ * @ibp: the port the packet came in on
+ * @hdr: the header of the packet
+ * @rcv_flags: flags relevant to rcv processing
+ * @data: the packet data
+ * @tlen: the length of the packet
+ * @qp: the QP for this packet.
+ *
+ * This is called from qp_rcv() to process an incoming UC packet
+ * for the given QP.
+ * Called at interrupt level.
+ */
+void hfi1_uc_rcv(struct hfi1_packet *packet)
+{
+ struct hfi1_ibport *ibp = rcd_to_iport(packet->rcd);
+ void *data = packet->payload;
+ u32 tlen = packet->tlen;
+ struct rvt_qp *qp = packet->qp;
+ struct ib_other_headers *ohdr = packet->ohdr;
+ u32 opcode = packet->opcode;
+ u32 hdrsize = packet->hlen;
+ u32 psn;
+ u32 pad = packet->pad;
+ struct ib_wc wc;
+ u32 pmtu = qp->pmtu;
+ struct ib_reth *reth;
+ int ret;
+ u8 extra_bytes = pad + packet->extra_byte + (SIZE_OF_CRC << 2);
+
+ if (hfi1_ruc_check_hdr(ibp, packet))
+ return;
+
+ process_ecn(qp, packet, true);
+
+ psn = ib_bth_get_psn(ohdr);
+ /* Compare the PSN verses the expected PSN. */
+ if (unlikely(cmp_psn(psn, qp->r_psn) != 0)) {
+ /*
+ * Handle a sequence error.
+ * Silently drop any current message.
+ */
+ qp->r_psn = psn;
+inv:
+ if (qp->r_state == OP(SEND_FIRST) ||
+ qp->r_state == OP(SEND_MIDDLE)) {
+ set_bit(RVT_R_REWIND_SGE, &qp->r_aflags);
+ qp->r_sge.num_sge = 0;
+ } else {
+ rvt_put_ss(&qp->r_sge);
+ }
+ qp->r_state = OP(SEND_LAST);
+ switch (opcode) {
+ case OP(SEND_FIRST):
+ case OP(SEND_ONLY):
+ case OP(SEND_ONLY_WITH_IMMEDIATE):
+ goto send_first;
+
+ case OP(RDMA_WRITE_FIRST):
+ case OP(RDMA_WRITE_ONLY):
+ case OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE):
+ goto rdma_first;
+
+ default:
+ goto drop;
+ }
+ }
+
+ /* Check for opcode sequence errors. */
+ switch (qp->r_state) {
+ case OP(SEND_FIRST):
+ case OP(SEND_MIDDLE):
+ if (opcode == OP(SEND_MIDDLE) ||
+ opcode == OP(SEND_LAST) ||
+ opcode == OP(SEND_LAST_WITH_IMMEDIATE))
+ break;
+ goto inv;
+
+ case OP(RDMA_WRITE_FIRST):
+ case OP(RDMA_WRITE_MIDDLE):
+ if (opcode == OP(RDMA_WRITE_MIDDLE) ||
+ opcode == OP(RDMA_WRITE_LAST) ||
+ opcode == OP(RDMA_WRITE_LAST_WITH_IMMEDIATE))
+ break;
+ goto inv;
+
+ default:
+ if (opcode == OP(SEND_FIRST) ||
+ opcode == OP(SEND_ONLY) ||
+ opcode == OP(SEND_ONLY_WITH_IMMEDIATE) ||
+ opcode == OP(RDMA_WRITE_FIRST) ||
+ opcode == OP(RDMA_WRITE_ONLY) ||
+ opcode == OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE))
+ break;
+ goto inv;
+ }
+
+ if (qp->state == IB_QPS_RTR && !(qp->r_flags & RVT_R_COMM_EST))
+ rvt_comm_est(qp);
+
+ /* OK, process the packet. */
+ switch (opcode) {
+ case OP(SEND_FIRST):
+ case OP(SEND_ONLY):
+ case OP(SEND_ONLY_WITH_IMMEDIATE):
+send_first:
+ if (test_and_clear_bit(RVT_R_REWIND_SGE, &qp->r_aflags)) {
+ qp->r_sge = qp->s_rdma_read_sge;
+ } else {
+ ret = rvt_get_rwqe(qp, false);
+ if (ret < 0)
+ goto op_err;
+ if (!ret)
+ goto drop;
+ /*
+ * qp->s_rdma_read_sge will be the owner
+ * of the mr references.
+ */
+ qp->s_rdma_read_sge = qp->r_sge;
+ }
+ qp->r_rcv_len = 0;
+ if (opcode == OP(SEND_ONLY))
+ goto no_immediate_data;
+ else if (opcode == OP(SEND_ONLY_WITH_IMMEDIATE))
+ goto send_last_imm;
+ /* FALLTHROUGH */
+ case OP(SEND_MIDDLE):
+ /* Check for invalid length PMTU or posted rwqe len. */
+ /*
+ * There will be no padding for 9B packet but 16B packets
+ * will come in with some padding since we always add
+ * CRC and LT bytes which will need to be flit aligned
+ */
+ if (unlikely(tlen != (hdrsize + pmtu + extra_bytes)))
+ goto rewind;
+ qp->r_rcv_len += pmtu;
+ if (unlikely(qp->r_rcv_len > qp->r_len))
+ goto rewind;
+ hfi1_copy_sge(&qp->r_sge, data, pmtu, false, false);
+ break;
+
+ case OP(SEND_LAST_WITH_IMMEDIATE):
+send_last_imm:
+ wc.ex.imm_data = ohdr->u.imm_data;
+ wc.wc_flags = IB_WC_WITH_IMM;
+ goto send_last;
+ case OP(SEND_LAST):
+no_immediate_data:
+ wc.ex.imm_data = 0;
+ wc.wc_flags = 0;
+send_last:
+ /* Check for invalid length. */
+ /* LAST len should be >= 1 */
+ if (unlikely(tlen < (hdrsize + extra_bytes)))
+ goto rewind;
+ /* Don't count the CRC. */
+ tlen -= (hdrsize + extra_bytes);
+ wc.byte_len = tlen + qp->r_rcv_len;
+ if (unlikely(wc.byte_len > qp->r_len))
+ goto rewind;
+ wc.opcode = IB_WC_RECV;
+ hfi1_copy_sge(&qp->r_sge, data, tlen, false, false);
+ rvt_put_ss(&qp->s_rdma_read_sge);
+last_imm:
+ wc.wr_id = qp->r_wr_id;
+ wc.status = IB_WC_SUCCESS;
+ wc.qp = &qp->ibqp;
+ wc.src_qp = qp->remote_qpn;
+ wc.slid = rdma_ah_get_dlid(&qp->remote_ah_attr) & U16_MAX;
+ /*
+ * It seems that IB mandates the presence of an SL in a
+ * work completion only for the UD transport (see section
+ * 11.4.2 of IBTA Vol. 1).
+ *
+ * However, the way the SL is chosen below is consistent
+ * with the way that IB/qib works and is trying avoid
+ * introducing incompatibilities.
+ *
+ * See also OPA Vol. 1, section 9.7.6, and table 9-17.
+ */
+ wc.sl = rdma_ah_get_sl(&qp->remote_ah_attr);
+ /* zero fields that are N/A */
+ wc.vendor_err = 0;
+ wc.pkey_index = 0;
+ wc.dlid_path_bits = 0;
+ wc.port_num = 0;
+ /* Signal completion event if the solicited bit is set. */
+ rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc,
+ ib_bth_is_solicited(ohdr));
+ break;
+
+ case OP(RDMA_WRITE_FIRST):
+ case OP(RDMA_WRITE_ONLY):
+ case OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE): /* consume RWQE */
+rdma_first:
+ if (unlikely(!(qp->qp_access_flags &
+ IB_ACCESS_REMOTE_WRITE))) {
+ goto drop;
+ }
+ reth = &ohdr->u.rc.reth;
+ qp->r_len = be32_to_cpu(reth->length);
+ qp->r_rcv_len = 0;
+ qp->r_sge.sg_list = NULL;
+ if (qp->r_len != 0) {
+ u32 rkey = be32_to_cpu(reth->rkey);
+ u64 vaddr = be64_to_cpu(reth->vaddr);
+ int ok;
+
+ /* Check rkey */
+ ok = rvt_rkey_ok(qp, &qp->r_sge.sge, qp->r_len,
+ vaddr, rkey, IB_ACCESS_REMOTE_WRITE);
+ if (unlikely(!ok))
+ goto drop;
+ qp->r_sge.num_sge = 1;
+ } else {
+ qp->r_sge.num_sge = 0;
+ qp->r_sge.sge.mr = NULL;
+ qp->r_sge.sge.vaddr = NULL;
+ qp->r_sge.sge.length = 0;
+ qp->r_sge.sge.sge_length = 0;
+ }
+ if (opcode == OP(RDMA_WRITE_ONLY)) {
+ goto rdma_last;
+ } else if (opcode == OP(RDMA_WRITE_ONLY_WITH_IMMEDIATE)) {
+ wc.ex.imm_data = ohdr->u.rc.imm_data;
+ goto rdma_last_imm;
+ }
+ /* FALLTHROUGH */
+ case OP(RDMA_WRITE_MIDDLE):
+ /* Check for invalid length PMTU or posted rwqe len. */
+ if (unlikely(tlen != (hdrsize + pmtu + 4)))
+ goto drop;
+ qp->r_rcv_len += pmtu;
+ if (unlikely(qp->r_rcv_len > qp->r_len))
+ goto drop;
+ hfi1_copy_sge(&qp->r_sge, data, pmtu, true, false);
+ break;
+
+ case OP(RDMA_WRITE_LAST_WITH_IMMEDIATE):
+ wc.ex.imm_data = ohdr->u.imm_data;
+rdma_last_imm:
+ wc.wc_flags = IB_WC_WITH_IMM;
+
+ /* Check for invalid length. */
+ /* LAST len should be >= 1 */
+ if (unlikely(tlen < (hdrsize + pad + 4)))
+ goto drop;
+ /* Don't count the CRC. */
+ tlen -= (hdrsize + extra_bytes);
+ if (unlikely(tlen + qp->r_rcv_len != qp->r_len))
+ goto drop;
+ if (test_and_clear_bit(RVT_R_REWIND_SGE, &qp->r_aflags)) {
+ rvt_put_ss(&qp->s_rdma_read_sge);
+ } else {
+ ret = rvt_get_rwqe(qp, true);
+ if (ret < 0)
+ goto op_err;
+ if (!ret)
+ goto drop;
+ }
+ wc.byte_len = qp->r_len;
+ wc.opcode = IB_WC_RECV_RDMA_WITH_IMM;
+ hfi1_copy_sge(&qp->r_sge, data, tlen, true, false);
+ rvt_put_ss(&qp->r_sge);
+ goto last_imm;
+
+ case OP(RDMA_WRITE_LAST):
+rdma_last:
+ /* Check for invalid length. */
+ /* LAST len should be >= 1 */
+ if (unlikely(tlen < (hdrsize + pad + 4)))
+ goto drop;
+ /* Don't count the CRC. */
+ tlen -= (hdrsize + extra_bytes);
+ if (unlikely(tlen + qp->r_rcv_len != qp->r_len))
+ goto drop;
+ hfi1_copy_sge(&qp->r_sge, data, tlen, true, false);
+ rvt_put_ss(&qp->r_sge);
+ break;
+
+ default:
+ /* Drop packet for unknown opcodes. */
+ goto drop;
+ }
+ qp->r_psn++;
+ qp->r_state = opcode;
+ return;
+
+rewind:
+ set_bit(RVT_R_REWIND_SGE, &qp->r_aflags);
+ qp->r_sge.num_sge = 0;
+drop:
+ ibp->rvp.n_pkt_drops++;
+ return;
+
+op_err:
+ rvt_rc_error(qp, IB_WC_LOC_QP_OP_ERR);
+}