IB/{hfi1, qib, rdmavt}: Move ruc_loopback to rdmavt
This patch moves ruc_loopback() from hfi1 into rdmavt for code sharing with the qib driver. Reviewed-by: Brian Welty <brian.welty@intel.com> Reviewed-by: Mike Marciniszyn <mike.marciniszyn@intel.com> Reviewed-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Venkata Sandeep Dhanalakota <venkata.s.dhanalakota@intel.com> Signed-off-by: Harish Chegondi <harish.chegondi@intel.com> Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com> Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
This commit is contained in:
Venkata Sandeep Dhanalakota
Jason Gunthorpe
parent
116aa0330e
commit
1570346153
@ -155,334 +155,6 @@ int hfi1_ruc_check_hdr(struct hfi1_ibport *ibp, struct hfi1_packet *packet)
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return 0;
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return 0;
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}
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}
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/**
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* ruc_loopback - handle UC and RC loopback requests
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* @sqp: the sending QP
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*
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* This is called from hfi1_do_send() to
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* forward a WQE addressed to the same HFI.
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* Note that although we are single threaded due to the send engine, we still
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* have to protect against post_send(). We don't have to worry about
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* receive interrupts since this is a connected protocol and all packets
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* will pass through here.
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*/
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static void ruc_loopback(struct rvt_qp *sqp)
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{
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struct hfi1_ibport *ibp = to_iport(sqp->ibqp.device, sqp->port_num);
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struct rvt_qp *qp;
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struct rvt_swqe *wqe;
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struct rvt_sge *sge;
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unsigned long flags;
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struct ib_wc wc;
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u64 sdata;
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atomic64_t *maddr;
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enum ib_wc_status send_status;
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bool release;
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int ret;
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bool copy_last = false;
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int local_ops = 0;
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rcu_read_lock();
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/*
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* Note that we check the responder QP state after
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* checking the requester's state.
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*/
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qp = rvt_lookup_qpn(ib_to_rvt(sqp->ibqp.device), &ibp->rvp,
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sqp->remote_qpn);
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spin_lock_irqsave(&sqp->s_lock, flags);
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/* Return if we are already busy processing a work request. */
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if ((sqp->s_flags & (RVT_S_BUSY | HFI1_S_ANY_WAIT)) ||
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!(ib_rvt_state_ops[sqp->state] & RVT_PROCESS_OR_FLUSH_SEND))
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goto unlock;
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sqp->s_flags |= RVT_S_BUSY;
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again:
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if (sqp->s_last == READ_ONCE(sqp->s_head))
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goto clr_busy;
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wqe = rvt_get_swqe_ptr(sqp, sqp->s_last);
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/* Return if it is not OK to start a new work request. */
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if (!(ib_rvt_state_ops[sqp->state] & RVT_PROCESS_NEXT_SEND_OK)) {
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if (!(ib_rvt_state_ops[sqp->state] & RVT_FLUSH_SEND))
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goto clr_busy;
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/* We are in the error state, flush the work request. */
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send_status = IB_WC_WR_FLUSH_ERR;
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goto flush_send;
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}
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/*
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* We can rely on the entry not changing without the s_lock
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* being held until we update s_last.
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* We increment s_cur to indicate s_last is in progress.
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*/
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if (sqp->s_last == sqp->s_cur) {
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if (++sqp->s_cur >= sqp->s_size)
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sqp->s_cur = 0;
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}
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spin_unlock_irqrestore(&sqp->s_lock, flags);
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if (!qp || !(ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK) ||
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qp->ibqp.qp_type != sqp->ibqp.qp_type) {
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ibp->rvp.n_pkt_drops++;
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/*
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* For RC, the requester would timeout and retry so
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* shortcut the timeouts and just signal too many retries.
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*/
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if (sqp->ibqp.qp_type == IB_QPT_RC)
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send_status = IB_WC_RETRY_EXC_ERR;
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else
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send_status = IB_WC_SUCCESS;
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goto serr;
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}
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memset(&wc, 0, sizeof(wc));
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send_status = IB_WC_SUCCESS;
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release = true;
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sqp->s_sge.sge = wqe->sg_list[0];
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sqp->s_sge.sg_list = wqe->sg_list + 1;
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sqp->s_sge.num_sge = wqe->wr.num_sge;
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sqp->s_len = wqe->length;
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switch (wqe->wr.opcode) {
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case IB_WR_REG_MR:
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goto send_comp;
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case IB_WR_LOCAL_INV:
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if (!(wqe->wr.send_flags & RVT_SEND_COMPLETION_ONLY)) {
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if (rvt_invalidate_rkey(sqp,
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wqe->wr.ex.invalidate_rkey))
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send_status = IB_WC_LOC_PROT_ERR;
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local_ops = 1;
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}
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goto send_comp;
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case IB_WR_SEND_WITH_INV:
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if (!rvt_invalidate_rkey(qp, wqe->wr.ex.invalidate_rkey)) {
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wc.wc_flags = IB_WC_WITH_INVALIDATE;
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wc.ex.invalidate_rkey = wqe->wr.ex.invalidate_rkey;
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}
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goto send;
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case IB_WR_SEND_WITH_IMM:
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wc.wc_flags = IB_WC_WITH_IMM;
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wc.ex.imm_data = wqe->wr.ex.imm_data;
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/* FALLTHROUGH */
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case IB_WR_SEND:
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send:
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ret = rvt_get_rwqe(qp, false);
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if (ret < 0)
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goto op_err;
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if (!ret)
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goto rnr_nak;
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break;
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case IB_WR_RDMA_WRITE_WITH_IMM:
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if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_WRITE)))
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goto inv_err;
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wc.wc_flags = IB_WC_WITH_IMM;
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wc.ex.imm_data = wqe->wr.ex.imm_data;
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ret = rvt_get_rwqe(qp, true);
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if (ret < 0)
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goto op_err;
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if (!ret)
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goto rnr_nak;
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/* skip copy_last set and qp_access_flags recheck */
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goto do_write;
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case IB_WR_RDMA_WRITE:
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copy_last = rvt_is_user_qp(qp);
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if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_WRITE)))
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goto inv_err;
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do_write:
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if (wqe->length == 0)
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break;
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if (unlikely(!rvt_rkey_ok(qp, &qp->r_sge.sge, wqe->length,
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wqe->rdma_wr.remote_addr,
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wqe->rdma_wr.rkey,
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IB_ACCESS_REMOTE_WRITE)))
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goto acc_err;
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qp->r_sge.sg_list = NULL;
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qp->r_sge.num_sge = 1;
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qp->r_sge.total_len = wqe->length;
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break;
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case IB_WR_RDMA_READ:
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if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_READ)))
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goto inv_err;
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if (unlikely(!rvt_rkey_ok(qp, &sqp->s_sge.sge, wqe->length,
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wqe->rdma_wr.remote_addr,
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wqe->rdma_wr.rkey,
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IB_ACCESS_REMOTE_READ)))
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goto acc_err;
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release = false;
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sqp->s_sge.sg_list = NULL;
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sqp->s_sge.num_sge = 1;
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qp->r_sge.sge = wqe->sg_list[0];
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qp->r_sge.sg_list = wqe->sg_list + 1;
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qp->r_sge.num_sge = wqe->wr.num_sge;
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qp->r_sge.total_len = wqe->length;
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break;
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case IB_WR_ATOMIC_CMP_AND_SWP:
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case IB_WR_ATOMIC_FETCH_AND_ADD:
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if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC)))
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goto inv_err;
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if (unlikely(!rvt_rkey_ok(qp, &qp->r_sge.sge, sizeof(u64),
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wqe->atomic_wr.remote_addr,
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wqe->atomic_wr.rkey,
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IB_ACCESS_REMOTE_ATOMIC)))
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goto acc_err;
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/* Perform atomic OP and save result. */
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maddr = (atomic64_t *)qp->r_sge.sge.vaddr;
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sdata = wqe->atomic_wr.compare_add;
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*(u64 *)sqp->s_sge.sge.vaddr =
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(wqe->wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD) ?
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(u64)atomic64_add_return(sdata, maddr) - sdata :
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(u64)cmpxchg((u64 *)qp->r_sge.sge.vaddr,
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sdata, wqe->atomic_wr.swap);
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rvt_put_mr(qp->r_sge.sge.mr);
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qp->r_sge.num_sge = 0;
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goto send_comp;
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default:
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send_status = IB_WC_LOC_QP_OP_ERR;
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goto serr;
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}
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sge = &sqp->s_sge.sge;
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while (sqp->s_len) {
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u32 len = sqp->s_len;
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if (len > sge->length)
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len = sge->length;
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if (len > sge->sge_length)
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len = sge->sge_length;
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WARN_ON_ONCE(len == 0);
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rvt_copy_sge(qp, &qp->r_sge, sge->vaddr,
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len, release, copy_last);
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sge->vaddr += len;
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sge->length -= len;
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sge->sge_length -= len;
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if (sge->sge_length == 0) {
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if (!release)
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rvt_put_mr(sge->mr);
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if (--sqp->s_sge.num_sge)
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*sge = *sqp->s_sge.sg_list++;
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} else if (sge->length == 0 && sge->mr->lkey) {
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if (++sge->n >= RVT_SEGSZ) {
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if (++sge->m >= sge->mr->mapsz)
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break;
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sge->n = 0;
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}
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sge->vaddr =
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sge->mr->map[sge->m]->segs[sge->n].vaddr;
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sge->length =
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sge->mr->map[sge->m]->segs[sge->n].length;
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}
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sqp->s_len -= len;
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}
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if (release)
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rvt_put_ss(&qp->r_sge);
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if (!test_and_clear_bit(RVT_R_WRID_VALID, &qp->r_aflags))
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goto send_comp;
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if (wqe->wr.opcode == IB_WR_RDMA_WRITE_WITH_IMM)
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wc.opcode = IB_WC_RECV_RDMA_WITH_IMM;
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else
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wc.opcode = IB_WC_RECV;
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wc.wr_id = qp->r_wr_id;
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wc.status = IB_WC_SUCCESS;
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wc.byte_len = wqe->length;
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wc.qp = &qp->ibqp;
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wc.src_qp = qp->remote_qpn;
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wc.slid = rdma_ah_get_dlid(&qp->remote_ah_attr) & U16_MAX;
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wc.sl = rdma_ah_get_sl(&qp->remote_ah_attr);
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wc.port_num = 1;
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/* Signal completion event if the solicited bit is set. */
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rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc,
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wqe->wr.send_flags & IB_SEND_SOLICITED);
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send_comp:
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spin_lock_irqsave(&sqp->s_lock, flags);
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ibp->rvp.n_loop_pkts++;
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flush_send:
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sqp->s_rnr_retry = sqp->s_rnr_retry_cnt;
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rvt_send_complete(sqp, wqe, send_status);
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if (local_ops) {
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atomic_dec(&sqp->local_ops_pending);
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local_ops = 0;
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}
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goto again;
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rnr_nak:
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/* Handle RNR NAK */
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if (qp->ibqp.qp_type == IB_QPT_UC)
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goto send_comp;
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ibp->rvp.n_rnr_naks++;
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/*
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* Note: we don't need the s_lock held since the BUSY flag
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* makes this single threaded.
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*/
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if (sqp->s_rnr_retry == 0) {
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send_status = IB_WC_RNR_RETRY_EXC_ERR;
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goto serr;
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}
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if (sqp->s_rnr_retry_cnt < 7)
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sqp->s_rnr_retry--;
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spin_lock_irqsave(&sqp->s_lock, flags);
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if (!(ib_rvt_state_ops[sqp->state] & RVT_PROCESS_RECV_OK))
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goto clr_busy;
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rvt_add_rnr_timer(sqp, qp->r_min_rnr_timer <<
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IB_AETH_CREDIT_SHIFT);
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goto clr_busy;
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op_err:
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send_status = IB_WC_REM_OP_ERR;
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wc.status = IB_WC_LOC_QP_OP_ERR;
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goto err;
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inv_err:
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send_status = IB_WC_REM_INV_REQ_ERR;
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wc.status = IB_WC_LOC_QP_OP_ERR;
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goto err;
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acc_err:
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send_status = IB_WC_REM_ACCESS_ERR;
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wc.status = IB_WC_LOC_PROT_ERR;
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err:
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/* responder goes to error state */
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rvt_rc_error(qp, wc.status);
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serr:
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spin_lock_irqsave(&sqp->s_lock, flags);
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rvt_send_complete(sqp, wqe, send_status);
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if (sqp->ibqp.qp_type == IB_QPT_RC) {
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int lastwqe = rvt_error_qp(sqp, IB_WC_WR_FLUSH_ERR);
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sqp->s_flags &= ~RVT_S_BUSY;
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spin_unlock_irqrestore(&sqp->s_lock, flags);
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if (lastwqe) {
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struct ib_event ev;
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ev.device = sqp->ibqp.device;
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ev.element.qp = &sqp->ibqp;
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ev.event = IB_EVENT_QP_LAST_WQE_REACHED;
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sqp->ibqp.event_handler(&ev, sqp->ibqp.qp_context);
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}
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goto done;
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}
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clr_busy:
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sqp->s_flags &= ~RVT_S_BUSY;
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unlock:
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spin_unlock_irqrestore(&sqp->s_lock, flags);
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done:
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rcu_read_unlock();
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}
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/**
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/**
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* hfi1_make_grh - construct a GRH header
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* hfi1_make_grh - construct a GRH header
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* @ibp: a pointer to the IB port
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* @ibp: a pointer to the IB port
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||||||
@ -860,7 +532,7 @@ void hfi1_do_send(struct rvt_qp *qp, bool in_thread)
|
|||||||
if (!loopback && ((rdma_ah_get_dlid(&qp->remote_ah_attr) &
|
if (!loopback && ((rdma_ah_get_dlid(&qp->remote_ah_attr) &
|
||||||
~((1 << ps.ppd->lmc) - 1)) ==
|
~((1 << ps.ppd->lmc) - 1)) ==
|
||||||
ps.ppd->lid)) {
|
ps.ppd->lid)) {
|
||||||
ruc_loopback(qp);
|
rvt_ruc_loopback(qp);
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
make_req = hfi1_make_rc_req;
|
make_req = hfi1_make_rc_req;
|
||||||
@ -870,7 +542,7 @@ void hfi1_do_send(struct rvt_qp *qp, bool in_thread)
|
|||||||
if (!loopback && ((rdma_ah_get_dlid(&qp->remote_ah_attr) &
|
if (!loopback && ((rdma_ah_get_dlid(&qp->remote_ah_attr) &
|
||||||
~((1 << ps.ppd->lmc) - 1)) ==
|
~((1 << ps.ppd->lmc) - 1)) ==
|
||||||
ps.ppd->lid)) {
|
ps.ppd->lid)) {
|
||||||
ruc_loopback(qp);
|
rvt_ruc_loopback(qp);
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
make_req = hfi1_make_uc_req;
|
make_req = hfi1_make_uc_req;
|
||||||
|
|||||||
@ -170,307 +170,6 @@ err:
|
|||||||
return 1;
|
return 1;
|
||||||
}
|
}
|
||||||
|
|
||||||
/**
|
|
||||||
* qib_ruc_loopback - handle UC and RC lookback requests
|
|
||||||
* @sqp: the sending QP
|
|
||||||
*
|
|
||||||
* This is called from qib_do_send() to
|
|
||||||
* forward a WQE addressed to the same HCA.
|
|
||||||
* Note that although we are single threaded due to the tasklet, we still
|
|
||||||
* have to protect against post_send(). We don't have to worry about
|
|
||||||
* receive interrupts since this is a connected protocol and all packets
|
|
||||||
* will pass through here.
|
|
||||||
*/
|
|
||||||
static void qib_ruc_loopback(struct rvt_qp *sqp)
|
|
||||||
{
|
|
||||||
struct qib_ibport *ibp = to_iport(sqp->ibqp.device, sqp->port_num);
|
|
||||||
struct qib_pportdata *ppd = ppd_from_ibp(ibp);
|
|
||||||
struct qib_devdata *dd = ppd->dd;
|
|
||||||
struct rvt_dev_info *rdi = &dd->verbs_dev.rdi;
|
|
||||||
struct rvt_qp *qp;
|
|
||||||
struct rvt_swqe *wqe;
|
|
||||||
struct rvt_sge *sge;
|
|
||||||
unsigned long flags;
|
|
||||||
struct ib_wc wc;
|
|
||||||
u64 sdata;
|
|
||||||
atomic64_t *maddr;
|
|
||||||
enum ib_wc_status send_status;
|
|
||||||
int release;
|
|
||||||
int ret;
|
|
||||||
|
|
||||||
rcu_read_lock();
|
|
||||||
/*
|
|
||||||
* Note that we check the responder QP state after
|
|
||||||
* checking the requester's state.
|
|
||||||
*/
|
|
||||||
qp = rvt_lookup_qpn(rdi, &ibp->rvp, sqp->remote_qpn);
|
|
||||||
if (!qp)
|
|
||||||
goto done;
|
|
||||||
|
|
||||||
spin_lock_irqsave(&sqp->s_lock, flags);
|
|
||||||
|
|
||||||
/* Return if we are already busy processing a work request. */
|
|
||||||
if ((sqp->s_flags & (RVT_S_BUSY | RVT_S_ANY_WAIT)) ||
|
|
||||||
!(ib_rvt_state_ops[sqp->state] & RVT_PROCESS_OR_FLUSH_SEND))
|
|
||||||
goto unlock;
|
|
||||||
|
|
||||||
sqp->s_flags |= RVT_S_BUSY;
|
|
||||||
|
|
||||||
again:
|
|
||||||
if (sqp->s_last == READ_ONCE(sqp->s_head))
|
|
||||||
goto clr_busy;
|
|
||||||
wqe = rvt_get_swqe_ptr(sqp, sqp->s_last);
|
|
||||||
|
|
||||||
/* Return if it is not OK to start a new work reqeust. */
|
|
||||||
if (!(ib_rvt_state_ops[sqp->state] & RVT_PROCESS_NEXT_SEND_OK)) {
|
|
||||||
if (!(ib_rvt_state_ops[sqp->state] & RVT_FLUSH_SEND))
|
|
||||||
goto clr_busy;
|
|
||||||
/* We are in the error state, flush the work request. */
|
|
||||||
send_status = IB_WC_WR_FLUSH_ERR;
|
|
||||||
goto flush_send;
|
|
||||||
}
|
|
||||||
|
|
||||||
/*
|
|
||||||
* We can rely on the entry not changing without the s_lock
|
|
||||||
* being held until we update s_last.
|
|
||||||
* We increment s_cur to indicate s_last is in progress.
|
|
||||||
*/
|
|
||||||
if (sqp->s_last == sqp->s_cur) {
|
|
||||||
if (++sqp->s_cur >= sqp->s_size)
|
|
||||||
sqp->s_cur = 0;
|
|
||||||
}
|
|
||||||
spin_unlock_irqrestore(&sqp->s_lock, flags);
|
|
||||||
|
|
||||||
if (!qp || !(ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK) ||
|
|
||||||
qp->ibqp.qp_type != sqp->ibqp.qp_type) {
|
|
||||||
ibp->rvp.n_pkt_drops++;
|
|
||||||
/*
|
|
||||||
* For RC, the requester would timeout and retry so
|
|
||||||
* shortcut the timeouts and just signal too many retries.
|
|
||||||
*/
|
|
||||||
if (sqp->ibqp.qp_type == IB_QPT_RC)
|
|
||||||
send_status = IB_WC_RETRY_EXC_ERR;
|
|
||||||
else
|
|
||||||
send_status = IB_WC_SUCCESS;
|
|
||||||
goto serr;
|
|
||||||
}
|
|
||||||
|
|
||||||
memset(&wc, 0, sizeof(wc));
|
|
||||||
send_status = IB_WC_SUCCESS;
|
|
||||||
|
|
||||||
release = 1;
|
|
||||||
sqp->s_sge.sge = wqe->sg_list[0];
|
|
||||||
sqp->s_sge.sg_list = wqe->sg_list + 1;
|
|
||||||
sqp->s_sge.num_sge = wqe->wr.num_sge;
|
|
||||||
sqp->s_len = wqe->length;
|
|
||||||
switch (wqe->wr.opcode) {
|
|
||||||
case IB_WR_SEND_WITH_IMM:
|
|
||||||
wc.wc_flags = IB_WC_WITH_IMM;
|
|
||||||
wc.ex.imm_data = wqe->wr.ex.imm_data;
|
|
||||||
/* FALLTHROUGH */
|
|
||||||
case IB_WR_SEND:
|
|
||||||
ret = rvt_get_rwqe(qp, false);
|
|
||||||
if (ret < 0)
|
|
||||||
goto op_err;
|
|
||||||
if (!ret)
|
|
||||||
goto rnr_nak;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case IB_WR_RDMA_WRITE_WITH_IMM:
|
|
||||||
if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_WRITE)))
|
|
||||||
goto inv_err;
|
|
||||||
wc.wc_flags = IB_WC_WITH_IMM;
|
|
||||||
wc.ex.imm_data = wqe->wr.ex.imm_data;
|
|
||||||
ret = rvt_get_rwqe(qp, true);
|
|
||||||
if (ret < 0)
|
|
||||||
goto op_err;
|
|
||||||
if (!ret)
|
|
||||||
goto rnr_nak;
|
|
||||||
/* FALLTHROUGH */
|
|
||||||
case IB_WR_RDMA_WRITE:
|
|
||||||
if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_WRITE)))
|
|
||||||
goto inv_err;
|
|
||||||
if (wqe->length == 0)
|
|
||||||
break;
|
|
||||||
if (unlikely(!rvt_rkey_ok(qp, &qp->r_sge.sge, wqe->length,
|
|
||||||
wqe->rdma_wr.remote_addr,
|
|
||||||
wqe->rdma_wr.rkey,
|
|
||||||
IB_ACCESS_REMOTE_WRITE)))
|
|
||||||
goto acc_err;
|
|
||||||
qp->r_sge.sg_list = NULL;
|
|
||||||
qp->r_sge.num_sge = 1;
|
|
||||||
qp->r_sge.total_len = wqe->length;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case IB_WR_RDMA_READ:
|
|
||||||
if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_READ)))
|
|
||||||
goto inv_err;
|
|
||||||
if (unlikely(!rvt_rkey_ok(qp, &sqp->s_sge.sge, wqe->length,
|
|
||||||
wqe->rdma_wr.remote_addr,
|
|
||||||
wqe->rdma_wr.rkey,
|
|
||||||
IB_ACCESS_REMOTE_READ)))
|
|
||||||
goto acc_err;
|
|
||||||
release = 0;
|
|
||||||
sqp->s_sge.sg_list = NULL;
|
|
||||||
sqp->s_sge.num_sge = 1;
|
|
||||||
qp->r_sge.sge = wqe->sg_list[0];
|
|
||||||
qp->r_sge.sg_list = wqe->sg_list + 1;
|
|
||||||
qp->r_sge.num_sge = wqe->wr.num_sge;
|
|
||||||
qp->r_sge.total_len = wqe->length;
|
|
||||||
break;
|
|
||||||
|
|
||||||
case IB_WR_ATOMIC_CMP_AND_SWP:
|
|
||||||
case IB_WR_ATOMIC_FETCH_AND_ADD:
|
|
||||||
if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC)))
|
|
||||||
goto inv_err;
|
|
||||||
if (unlikely(!rvt_rkey_ok(qp, &qp->r_sge.sge, sizeof(u64),
|
|
||||||
wqe->atomic_wr.remote_addr,
|
|
||||||
wqe->atomic_wr.rkey,
|
|
||||||
IB_ACCESS_REMOTE_ATOMIC)))
|
|
||||||
goto acc_err;
|
|
||||||
/* Perform atomic OP and save result. */
|
|
||||||
maddr = (atomic64_t *) qp->r_sge.sge.vaddr;
|
|
||||||
sdata = wqe->atomic_wr.compare_add;
|
|
||||||
*(u64 *) sqp->s_sge.sge.vaddr =
|
|
||||||
(wqe->atomic_wr.wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD) ?
|
|
||||||
(u64) atomic64_add_return(sdata, maddr) - sdata :
|
|
||||||
(u64) cmpxchg((u64 *) qp->r_sge.sge.vaddr,
|
|
||||||
sdata, wqe->atomic_wr.swap);
|
|
||||||
rvt_put_mr(qp->r_sge.sge.mr);
|
|
||||||
qp->r_sge.num_sge = 0;
|
|
||||||
goto send_comp;
|
|
||||||
|
|
||||||
default:
|
|
||||||
send_status = IB_WC_LOC_QP_OP_ERR;
|
|
||||||
goto serr;
|
|
||||||
}
|
|
||||||
|
|
||||||
sge = &sqp->s_sge.sge;
|
|
||||||
while (sqp->s_len) {
|
|
||||||
u32 len = sqp->s_len;
|
|
||||||
|
|
||||||
if (len > sge->length)
|
|
||||||
len = sge->length;
|
|
||||||
if (len > sge->sge_length)
|
|
||||||
len = sge->sge_length;
|
|
||||||
BUG_ON(len == 0);
|
|
||||||
rvt_copy_sge(qp, &qp->r_sge, sge->vaddr, len, release, false);
|
|
||||||
sge->vaddr += len;
|
|
||||||
sge->length -= len;
|
|
||||||
sge->sge_length -= len;
|
|
||||||
if (sge->sge_length == 0) {
|
|
||||||
if (!release)
|
|
||||||
rvt_put_mr(sge->mr);
|
|
||||||
if (--sqp->s_sge.num_sge)
|
|
||||||
*sge = *sqp->s_sge.sg_list++;
|
|
||||||
} else if (sge->length == 0 && sge->mr->lkey) {
|
|
||||||
if (++sge->n >= RVT_SEGSZ) {
|
|
||||||
if (++sge->m >= sge->mr->mapsz)
|
|
||||||
break;
|
|
||||||
sge->n = 0;
|
|
||||||
}
|
|
||||||
sge->vaddr =
|
|
||||||
sge->mr->map[sge->m]->segs[sge->n].vaddr;
|
|
||||||
sge->length =
|
|
||||||
sge->mr->map[sge->m]->segs[sge->n].length;
|
|
||||||
}
|
|
||||||
sqp->s_len -= len;
|
|
||||||
}
|
|
||||||
if (release)
|
|
||||||
rvt_put_ss(&qp->r_sge);
|
|
||||||
|
|
||||||
if (!test_and_clear_bit(RVT_R_WRID_VALID, &qp->r_aflags))
|
|
||||||
goto send_comp;
|
|
||||||
|
|
||||||
if (wqe->wr.opcode == IB_WR_RDMA_WRITE_WITH_IMM)
|
|
||||||
wc.opcode = IB_WC_RECV_RDMA_WITH_IMM;
|
|
||||||
else
|
|
||||||
wc.opcode = IB_WC_RECV;
|
|
||||||
wc.wr_id = qp->r_wr_id;
|
|
||||||
wc.status = IB_WC_SUCCESS;
|
|
||||||
wc.byte_len = wqe->length;
|
|
||||||
wc.qp = &qp->ibqp;
|
|
||||||
wc.src_qp = qp->remote_qpn;
|
|
||||||
wc.slid = rdma_ah_get_dlid(&qp->remote_ah_attr);
|
|
||||||
wc.sl = rdma_ah_get_sl(&qp->remote_ah_attr);
|
|
||||||
wc.port_num = 1;
|
|
||||||
/* Signal completion event if the solicited bit is set. */
|
|
||||||
rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc,
|
|
||||||
wqe->wr.send_flags & IB_SEND_SOLICITED);
|
|
||||||
|
|
||||||
send_comp:
|
|
||||||
spin_lock_irqsave(&sqp->s_lock, flags);
|
|
||||||
ibp->rvp.n_loop_pkts++;
|
|
||||||
flush_send:
|
|
||||||
sqp->s_rnr_retry = sqp->s_rnr_retry_cnt;
|
|
||||||
rvt_send_complete(sqp, wqe, send_status);
|
|
||||||
goto again;
|
|
||||||
|
|
||||||
rnr_nak:
|
|
||||||
/* Handle RNR NAK */
|
|
||||||
if (qp->ibqp.qp_type == IB_QPT_UC)
|
|
||||||
goto send_comp;
|
|
||||||
ibp->rvp.n_rnr_naks++;
|
|
||||||
/*
|
|
||||||
* Note: we don't need the s_lock held since the BUSY flag
|
|
||||||
* makes this single threaded.
|
|
||||||
*/
|
|
||||||
if (sqp->s_rnr_retry == 0) {
|
|
||||||
send_status = IB_WC_RNR_RETRY_EXC_ERR;
|
|
||||||
goto serr;
|
|
||||||
}
|
|
||||||
if (sqp->s_rnr_retry_cnt < 7)
|
|
||||||
sqp->s_rnr_retry--;
|
|
||||||
spin_lock_irqsave(&sqp->s_lock, flags);
|
|
||||||
if (!(ib_rvt_state_ops[sqp->state] & RVT_PROCESS_RECV_OK))
|
|
||||||
goto clr_busy;
|
|
||||||
rvt_add_rnr_timer(sqp, qp->r_min_rnr_timer <<
|
|
||||||
IB_AETH_CREDIT_SHIFT);
|
|
||||||
goto clr_busy;
|
|
||||||
|
|
||||||
op_err:
|
|
||||||
send_status = IB_WC_REM_OP_ERR;
|
|
||||||
wc.status = IB_WC_LOC_QP_OP_ERR;
|
|
||||||
goto err;
|
|
||||||
|
|
||||||
inv_err:
|
|
||||||
send_status = IB_WC_REM_INV_REQ_ERR;
|
|
||||||
wc.status = IB_WC_LOC_QP_OP_ERR;
|
|
||||||
goto err;
|
|
||||||
|
|
||||||
acc_err:
|
|
||||||
send_status = IB_WC_REM_ACCESS_ERR;
|
|
||||||
wc.status = IB_WC_LOC_PROT_ERR;
|
|
||||||
err:
|
|
||||||
/* responder goes to error state */
|
|
||||||
rvt_rc_error(qp, wc.status);
|
|
||||||
|
|
||||||
serr:
|
|
||||||
spin_lock_irqsave(&sqp->s_lock, flags);
|
|
||||||
rvt_send_complete(sqp, wqe, send_status);
|
|
||||||
if (sqp->ibqp.qp_type == IB_QPT_RC) {
|
|
||||||
int lastwqe = rvt_error_qp(sqp, IB_WC_WR_FLUSH_ERR);
|
|
||||||
|
|
||||||
sqp->s_flags &= ~RVT_S_BUSY;
|
|
||||||
spin_unlock_irqrestore(&sqp->s_lock, flags);
|
|
||||||
if (lastwqe) {
|
|
||||||
struct ib_event ev;
|
|
||||||
|
|
||||||
ev.device = sqp->ibqp.device;
|
|
||||||
ev.element.qp = &sqp->ibqp;
|
|
||||||
ev.event = IB_EVENT_QP_LAST_WQE_REACHED;
|
|
||||||
sqp->ibqp.event_handler(&ev, sqp->ibqp.qp_context);
|
|
||||||
}
|
|
||||||
goto done;
|
|
||||||
}
|
|
||||||
clr_busy:
|
|
||||||
sqp->s_flags &= ~RVT_S_BUSY;
|
|
||||||
unlock:
|
|
||||||
spin_unlock_irqrestore(&sqp->s_lock, flags);
|
|
||||||
done:
|
|
||||||
rcu_read_unlock();
|
|
||||||
}
|
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* qib_make_grh - construct a GRH header
|
* qib_make_grh - construct a GRH header
|
||||||
* @ibp: a pointer to the IB port
|
* @ibp: a pointer to the IB port
|
||||||
@ -573,7 +272,7 @@ void qib_do_send(struct rvt_qp *qp)
|
|||||||
qp->ibqp.qp_type == IB_QPT_UC) &&
|
qp->ibqp.qp_type == IB_QPT_UC) &&
|
||||||
(rdma_ah_get_dlid(&qp->remote_ah_attr) &
|
(rdma_ah_get_dlid(&qp->remote_ah_attr) &
|
||||||
~((1 << ppd->lmc) - 1)) == ppd->lid) {
|
~((1 << ppd->lmc) - 1)) == ppd->lid) {
|
||||||
qib_ruc_loopback(qp);
|
rvt_ruc_loopback(qp);
|
||||||
return;
|
return;
|
||||||
}
|
}
|
||||||
|
|
||||||
|
|||||||
@ -2777,3 +2777,334 @@ again:
|
|||||||
}
|
}
|
||||||
}
|
}
|
||||||
EXPORT_SYMBOL(rvt_copy_sge);
|
EXPORT_SYMBOL(rvt_copy_sge);
|
||||||
|
|
||||||
|
/**
|
||||||
|
* ruc_loopback - handle UC and RC loopback requests
|
||||||
|
* @sqp: the sending QP
|
||||||
|
*
|
||||||
|
* This is called from rvt_do_send() to forward a WQE addressed to the same HFI
|
||||||
|
* Note that although we are single threaded due to the send engine, we still
|
||||||
|
* have to protect against post_send(). We don't have to worry about
|
||||||
|
* receive interrupts since this is a connected protocol and all packets
|
||||||
|
* will pass through here.
|
||||||
|
*/
|
||||||
|
void rvt_ruc_loopback(struct rvt_qp *sqp)
|
||||||
|
{
|
||||||
|
struct rvt_ibport *rvp = NULL;
|
||||||
|
struct rvt_dev_info *rdi = ib_to_rvt(sqp->ibqp.device);
|
||||||
|
struct rvt_qp *qp;
|
||||||
|
struct rvt_swqe *wqe;
|
||||||
|
struct rvt_sge *sge;
|
||||||
|
unsigned long flags;
|
||||||
|
struct ib_wc wc;
|
||||||
|
u64 sdata;
|
||||||
|
atomic64_t *maddr;
|
||||||
|
enum ib_wc_status send_status;
|
||||||
|
bool release;
|
||||||
|
int ret;
|
||||||
|
bool copy_last = false;
|
||||||
|
int local_ops = 0;
|
||||||
|
|
||||||
|
rcu_read_lock();
|
||||||
|
rvp = rdi->ports[sqp->port_num - 1];
|
||||||
|
|
||||||
|
/*
|
||||||
|
* Note that we check the responder QP state after
|
||||||
|
* checking the requester's state.
|
||||||
|
*/
|
||||||
|
|
||||||
|
qp = rvt_lookup_qpn(ib_to_rvt(sqp->ibqp.device), rvp,
|
||||||
|
sqp->remote_qpn);
|
||||||
|
|
||||||
|
spin_lock_irqsave(&sqp->s_lock, flags);
|
||||||
|
|
||||||
|
/* Return if we are already busy processing a work request. */
|
||||||
|
if ((sqp->s_flags & (RVT_S_BUSY | RVT_S_ANY_WAIT)) ||
|
||||||
|
!(ib_rvt_state_ops[sqp->state] & RVT_PROCESS_OR_FLUSH_SEND))
|
||||||
|
goto unlock;
|
||||||
|
|
||||||
|
sqp->s_flags |= RVT_S_BUSY;
|
||||||
|
|
||||||
|
again:
|
||||||
|
if (sqp->s_last == READ_ONCE(sqp->s_head))
|
||||||
|
goto clr_busy;
|
||||||
|
wqe = rvt_get_swqe_ptr(sqp, sqp->s_last);
|
||||||
|
|
||||||
|
/* Return if it is not OK to start a new work request. */
|
||||||
|
if (!(ib_rvt_state_ops[sqp->state] & RVT_PROCESS_NEXT_SEND_OK)) {
|
||||||
|
if (!(ib_rvt_state_ops[sqp->state] & RVT_FLUSH_SEND))
|
||||||
|
goto clr_busy;
|
||||||
|
/* We are in the error state, flush the work request. */
|
||||||
|
send_status = IB_WC_WR_FLUSH_ERR;
|
||||||
|
goto flush_send;
|
||||||
|
}
|
||||||
|
|
||||||
|
/*
|
||||||
|
* We can rely on the entry not changing without the s_lock
|
||||||
|
* being held until we update s_last.
|
||||||
|
* We increment s_cur to indicate s_last is in progress.
|
||||||
|
*/
|
||||||
|
if (sqp->s_last == sqp->s_cur) {
|
||||||
|
if (++sqp->s_cur >= sqp->s_size)
|
||||||
|
sqp->s_cur = 0;
|
||||||
|
}
|
||||||
|
spin_unlock_irqrestore(&sqp->s_lock, flags);
|
||||||
|
|
||||||
|
if (!qp || !(ib_rvt_state_ops[qp->state] & RVT_PROCESS_RECV_OK) ||
|
||||||
|
qp->ibqp.qp_type != sqp->ibqp.qp_type) {
|
||||||
|
rvp->n_pkt_drops++;
|
||||||
|
/*
|
||||||
|
* For RC, the requester would timeout and retry so
|
||||||
|
* shortcut the timeouts and just signal too many retries.
|
||||||
|
*/
|
||||||
|
if (sqp->ibqp.qp_type == IB_QPT_RC)
|
||||||
|
send_status = IB_WC_RETRY_EXC_ERR;
|
||||||
|
else
|
||||||
|
send_status = IB_WC_SUCCESS;
|
||||||
|
goto serr;
|
||||||
|
}
|
||||||
|
|
||||||
|
memset(&wc, 0, sizeof(wc));
|
||||||
|
send_status = IB_WC_SUCCESS;
|
||||||
|
|
||||||
|
release = true;
|
||||||
|
sqp->s_sge.sge = wqe->sg_list[0];
|
||||||
|
sqp->s_sge.sg_list = wqe->sg_list + 1;
|
||||||
|
sqp->s_sge.num_sge = wqe->wr.num_sge;
|
||||||
|
sqp->s_len = wqe->length;
|
||||||
|
switch (wqe->wr.opcode) {
|
||||||
|
case IB_WR_REG_MR:
|
||||||
|
goto send_comp;
|
||||||
|
|
||||||
|
case IB_WR_LOCAL_INV:
|
||||||
|
if (!(wqe->wr.send_flags & RVT_SEND_COMPLETION_ONLY)) {
|
||||||
|
if (rvt_invalidate_rkey(sqp,
|
||||||
|
wqe->wr.ex.invalidate_rkey))
|
||||||
|
send_status = IB_WC_LOC_PROT_ERR;
|
||||||
|
local_ops = 1;
|
||||||
|
}
|
||||||
|
goto send_comp;
|
||||||
|
|
||||||
|
case IB_WR_SEND_WITH_INV:
|
||||||
|
if (!rvt_invalidate_rkey(qp, wqe->wr.ex.invalidate_rkey)) {
|
||||||
|
wc.wc_flags = IB_WC_WITH_INVALIDATE;
|
||||||
|
wc.ex.invalidate_rkey = wqe->wr.ex.invalidate_rkey;
|
||||||
|
}
|
||||||
|
goto send;
|
||||||
|
|
||||||
|
case IB_WR_SEND_WITH_IMM:
|
||||||
|
wc.wc_flags = IB_WC_WITH_IMM;
|
||||||
|
wc.ex.imm_data = wqe->wr.ex.imm_data;
|
||||||
|
/* FALLTHROUGH */
|
||||||
|
case IB_WR_SEND:
|
||||||
|
send:
|
||||||
|
ret = rvt_get_rwqe(qp, false);
|
||||||
|
if (ret < 0)
|
||||||
|
goto op_err;
|
||||||
|
if (!ret)
|
||||||
|
goto rnr_nak;
|
||||||
|
break;
|
||||||
|
|
||||||
|
case IB_WR_RDMA_WRITE_WITH_IMM:
|
||||||
|
if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_WRITE)))
|
||||||
|
goto inv_err;
|
||||||
|
wc.wc_flags = IB_WC_WITH_IMM;
|
||||||
|
wc.ex.imm_data = wqe->wr.ex.imm_data;
|
||||||
|
ret = rvt_get_rwqe(qp, true);
|
||||||
|
if (ret < 0)
|
||||||
|
goto op_err;
|
||||||
|
if (!ret)
|
||||||
|
goto rnr_nak;
|
||||||
|
/* skip copy_last set and qp_access_flags recheck */
|
||||||
|
goto do_write;
|
||||||
|
case IB_WR_RDMA_WRITE:
|
||||||
|
copy_last = rvt_is_user_qp(qp);
|
||||||
|
if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_WRITE)))
|
||||||
|
goto inv_err;
|
||||||
|
do_write:
|
||||||
|
if (wqe->length == 0)
|
||||||
|
break;
|
||||||
|
if (unlikely(!rvt_rkey_ok(qp, &qp->r_sge.sge, wqe->length,
|
||||||
|
wqe->rdma_wr.remote_addr,
|
||||||
|
wqe->rdma_wr.rkey,
|
||||||
|
IB_ACCESS_REMOTE_WRITE)))
|
||||||
|
goto acc_err;
|
||||||
|
qp->r_sge.sg_list = NULL;
|
||||||
|
qp->r_sge.num_sge = 1;
|
||||||
|
qp->r_sge.total_len = wqe->length;
|
||||||
|
break;
|
||||||
|
|
||||||
|
case IB_WR_RDMA_READ:
|
||||||
|
if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_READ)))
|
||||||
|
goto inv_err;
|
||||||
|
if (unlikely(!rvt_rkey_ok(qp, &sqp->s_sge.sge, wqe->length,
|
||||||
|
wqe->rdma_wr.remote_addr,
|
||||||
|
wqe->rdma_wr.rkey,
|
||||||
|
IB_ACCESS_REMOTE_READ)))
|
||||||
|
goto acc_err;
|
||||||
|
release = false;
|
||||||
|
sqp->s_sge.sg_list = NULL;
|
||||||
|
sqp->s_sge.num_sge = 1;
|
||||||
|
qp->r_sge.sge = wqe->sg_list[0];
|
||||||
|
qp->r_sge.sg_list = wqe->sg_list + 1;
|
||||||
|
qp->r_sge.num_sge = wqe->wr.num_sge;
|
||||||
|
qp->r_sge.total_len = wqe->length;
|
||||||
|
break;
|
||||||
|
|
||||||
|
case IB_WR_ATOMIC_CMP_AND_SWP:
|
||||||
|
case IB_WR_ATOMIC_FETCH_AND_ADD:
|
||||||
|
if (unlikely(!(qp->qp_access_flags & IB_ACCESS_REMOTE_ATOMIC)))
|
||||||
|
goto inv_err;
|
||||||
|
if (unlikely(!rvt_rkey_ok(qp, &qp->r_sge.sge, sizeof(u64),
|
||||||
|
wqe->atomic_wr.remote_addr,
|
||||||
|
wqe->atomic_wr.rkey,
|
||||||
|
IB_ACCESS_REMOTE_ATOMIC)))
|
||||||
|
goto acc_err;
|
||||||
|
/* Perform atomic OP and save result. */
|
||||||
|
maddr = (atomic64_t *)qp->r_sge.sge.vaddr;
|
||||||
|
sdata = wqe->atomic_wr.compare_add;
|
||||||
|
*(u64 *)sqp->s_sge.sge.vaddr =
|
||||||
|
(wqe->wr.opcode == IB_WR_ATOMIC_FETCH_AND_ADD) ?
|
||||||
|
(u64)atomic64_add_return(sdata, maddr) - sdata :
|
||||||
|
(u64)cmpxchg((u64 *)qp->r_sge.sge.vaddr,
|
||||||
|
sdata, wqe->atomic_wr.swap);
|
||||||
|
rvt_put_mr(qp->r_sge.sge.mr);
|
||||||
|
qp->r_sge.num_sge = 0;
|
||||||
|
goto send_comp;
|
||||||
|
|
||||||
|
default:
|
||||||
|
send_status = IB_WC_LOC_QP_OP_ERR;
|
||||||
|
goto serr;
|
||||||
|
}
|
||||||
|
|
||||||
|
sge = &sqp->s_sge.sge;
|
||||||
|
while (sqp->s_len) {
|
||||||
|
u32 len = sqp->s_len;
|
||||||
|
|
||||||
|
if (len > sge->length)
|
||||||
|
len = sge->length;
|
||||||
|
if (len > sge->sge_length)
|
||||||
|
len = sge->sge_length;
|
||||||
|
WARN_ON_ONCE(len == 0);
|
||||||
|
rvt_copy_sge(qp, &qp->r_sge, sge->vaddr,
|
||||||
|
len, release, copy_last);
|
||||||
|
sge->vaddr += len;
|
||||||
|
sge->length -= len;
|
||||||
|
sge->sge_length -= len;
|
||||||
|
if (sge->sge_length == 0) {
|
||||||
|
if (!release)
|
||||||
|
rvt_put_mr(sge->mr);
|
||||||
|
if (--sqp->s_sge.num_sge)
|
||||||
|
*sge = *sqp->s_sge.sg_list++;
|
||||||
|
} else if (sge->length == 0 && sge->mr->lkey) {
|
||||||
|
if (++sge->n >= RVT_SEGSZ) {
|
||||||
|
if (++sge->m >= sge->mr->mapsz)
|
||||||
|
break;
|
||||||
|
sge->n = 0;
|
||||||
|
}
|
||||||
|
sge->vaddr =
|
||||||
|
sge->mr->map[sge->m]->segs[sge->n].vaddr;
|
||||||
|
sge->length =
|
||||||
|
sge->mr->map[sge->m]->segs[sge->n].length;
|
||||||
|
}
|
||||||
|
sqp->s_len -= len;
|
||||||
|
}
|
||||||
|
if (release)
|
||||||
|
rvt_put_ss(&qp->r_sge);
|
||||||
|
|
||||||
|
if (!test_and_clear_bit(RVT_R_WRID_VALID, &qp->r_aflags))
|
||||||
|
goto send_comp;
|
||||||
|
|
||||||
|
if (wqe->wr.opcode == IB_WR_RDMA_WRITE_WITH_IMM)
|
||||||
|
wc.opcode = IB_WC_RECV_RDMA_WITH_IMM;
|
||||||
|
else
|
||||||
|
wc.opcode = IB_WC_RECV;
|
||||||
|
wc.wr_id = qp->r_wr_id;
|
||||||
|
wc.status = IB_WC_SUCCESS;
|
||||||
|
wc.byte_len = wqe->length;
|
||||||
|
wc.qp = &qp->ibqp;
|
||||||
|
wc.src_qp = qp->remote_qpn;
|
||||||
|
wc.slid = rdma_ah_get_dlid(&qp->remote_ah_attr) & U16_MAX;
|
||||||
|
wc.sl = rdma_ah_get_sl(&qp->remote_ah_attr);
|
||||||
|
wc.port_num = 1;
|
||||||
|
/* Signal completion event if the solicited bit is set. */
|
||||||
|
rvt_cq_enter(ibcq_to_rvtcq(qp->ibqp.recv_cq), &wc,
|
||||||
|
wqe->wr.send_flags & IB_SEND_SOLICITED);
|
||||||
|
|
||||||
|
send_comp:
|
||||||
|
spin_lock_irqsave(&sqp->s_lock, flags);
|
||||||
|
rvp->n_loop_pkts++;
|
||||||
|
flush_send:
|
||||||
|
sqp->s_rnr_retry = sqp->s_rnr_retry_cnt;
|
||||||
|
rvt_send_complete(sqp, wqe, send_status);
|
||||||
|
if (local_ops) {
|
||||||
|
atomic_dec(&sqp->local_ops_pending);
|
||||||
|
local_ops = 0;
|
||||||
|
}
|
||||||
|
goto again;
|
||||||
|
|
||||||
|
rnr_nak:
|
||||||
|
/* Handle RNR NAK */
|
||||||
|
if (qp->ibqp.qp_type == IB_QPT_UC)
|
||||||
|
goto send_comp;
|
||||||
|
rvp->n_rnr_naks++;
|
||||||
|
/*
|
||||||
|
* Note: we don't need the s_lock held since the BUSY flag
|
||||||
|
* makes this single threaded.
|
||||||
|
*/
|
||||||
|
if (sqp->s_rnr_retry == 0) {
|
||||||
|
send_status = IB_WC_RNR_RETRY_EXC_ERR;
|
||||||
|
goto serr;
|
||||||
|
}
|
||||||
|
if (sqp->s_rnr_retry_cnt < 7)
|
||||||
|
sqp->s_rnr_retry--;
|
||||||
|
spin_lock_irqsave(&sqp->s_lock, flags);
|
||||||
|
if (!(ib_rvt_state_ops[sqp->state] & RVT_PROCESS_RECV_OK))
|
||||||
|
goto clr_busy;
|
||||||
|
rvt_add_rnr_timer(sqp, qp->r_min_rnr_timer <<
|
||||||
|
IB_AETH_CREDIT_SHIFT);
|
||||||
|
goto clr_busy;
|
||||||
|
|
||||||
|
op_err:
|
||||||
|
send_status = IB_WC_REM_OP_ERR;
|
||||||
|
wc.status = IB_WC_LOC_QP_OP_ERR;
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
inv_err:
|
||||||
|
send_status = IB_WC_REM_INV_REQ_ERR;
|
||||||
|
wc.status = IB_WC_LOC_QP_OP_ERR;
|
||||||
|
goto err;
|
||||||
|
|
||||||
|
acc_err:
|
||||||
|
send_status = IB_WC_REM_ACCESS_ERR;
|
||||||
|
wc.status = IB_WC_LOC_PROT_ERR;
|
||||||
|
err:
|
||||||
|
/* responder goes to error state */
|
||||||
|
rvt_rc_error(qp, wc.status);
|
||||||
|
|
||||||
|
serr:
|
||||||
|
spin_lock_irqsave(&sqp->s_lock, flags);
|
||||||
|
rvt_send_complete(sqp, wqe, send_status);
|
||||||
|
if (sqp->ibqp.qp_type == IB_QPT_RC) {
|
||||||
|
int lastwqe = rvt_error_qp(sqp, IB_WC_WR_FLUSH_ERR);
|
||||||
|
|
||||||
|
sqp->s_flags &= ~RVT_S_BUSY;
|
||||||
|
spin_unlock_irqrestore(&sqp->s_lock, flags);
|
||||||
|
if (lastwqe) {
|
||||||
|
struct ib_event ev;
|
||||||
|
|
||||||
|
ev.device = sqp->ibqp.device;
|
||||||
|
ev.element.qp = &sqp->ibqp;
|
||||||
|
ev.event = IB_EVENT_QP_LAST_WQE_REACHED;
|
||||||
|
sqp->ibqp.event_handler(&ev, sqp->ibqp.qp_context);
|
||||||
|
}
|
||||||
|
goto done;
|
||||||
|
}
|
||||||
|
clr_busy:
|
||||||
|
sqp->s_flags &= ~RVT_S_BUSY;
|
||||||
|
unlock:
|
||||||
|
spin_unlock_irqrestore(&sqp->s_lock, flags);
|
||||||
|
done:
|
||||||
|
rcu_read_unlock();
|
||||||
|
}
|
||||||
|
EXPORT_SYMBOL(rvt_ruc_loopback);
|
||||||
|
|||||||
@ -683,6 +683,7 @@ void rvt_copy_sge(struct rvt_qp *qp, struct rvt_sge_state *ss,
|
|||||||
bool release, bool copy_last);
|
bool release, bool copy_last);
|
||||||
void rvt_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe,
|
void rvt_send_complete(struct rvt_qp *qp, struct rvt_swqe *wqe,
|
||||||
enum ib_wc_status status);
|
enum ib_wc_status status);
|
||||||
|
void rvt_ruc_loopback(struct rvt_qp *qp);
|
||||||
|
|
||||||
/**
|
/**
|
||||||
* struct rvt_qp_iter - the iterator for QPs
|
* struct rvt_qp_iter - the iterator for QPs
|
||||||
|
|||||||
Loading…
Reference in New Issue
Block a user