diff options
Diffstat (limited to 'drivers/infiniband/hw/hfi1')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/tid_rdma.c | 63 | ||||
| -rw-r--r-- | drivers/infiniband/hw/hfi1/verbs.h | 1 |
2 files changed, 58 insertions, 6 deletions
diff --git a/drivers/infiniband/hw/hfi1/tid_rdma.c b/drivers/infiniband/hw/hfi1/tid_rdma.c index 1901d5b6bbb9..cb6321b0d2c9 100644 --- a/drivers/infiniband/hw/hfi1/tid_rdma.c +++ b/drivers/infiniband/hw/hfi1/tid_rdma.c @@ -3059,8 +3059,9 @@ void hfi1_tid_rdma_restart_req(struct rvt_qp *qp, struct rvt_swqe *wqe, { struct tid_rdma_request *req = wqe_to_tid_req(wqe); struct tid_rdma_flow *flow; - int diff; - u32 tididx = 0; + struct hfi1_qp_priv *qpriv = qp->priv; + int diff, delta_pkts; + u32 tididx = 0, i; u16 fidx; if (wqe->wr.opcode == IB_WR_TID_RDMA_READ) { @@ -3076,11 +3077,20 @@ void hfi1_tid_rdma_restart_req(struct rvt_qp *qp, struct rvt_swqe *wqe, return; } } else { - return; + fidx = req->acked_tail; + flow = &req->flows[fidx]; + *bth2 = mask_psn(req->r_ack_psn); } + if (wqe->wr.opcode == IB_WR_TID_RDMA_READ) + delta_pkts = delta_psn(*bth2, flow->flow_state.ib_spsn); + else + delta_pkts = delta_psn(*bth2, + full_flow_psn(flow, + flow->flow_state.spsn)); + trace_hfi1_tid_flow_restart_req(qp, fidx, flow); - diff = delta_psn(*bth2, flow->flow_state.ib_spsn); + diff = delta_pkts + flow->resync_npkts; flow->sent = 0; flow->pkt = 0; @@ -3104,6 +3114,18 @@ void hfi1_tid_rdma_restart_req(struct rvt_qp *qp, struct rvt_swqe *wqe, break; } } + if (wqe->wr.opcode == IB_WR_TID_RDMA_WRITE) { + rvt_skip_sge(&qpriv->tid_ss, (req->cur_seg * req->seg_len) + + flow->sent, 0); + /* + * Packet PSN is based on flow_state.spsn + flow->pkt. However, + * during a RESYNC, the generation is incremented and the + * sequence is reset to 0. Since we've adjusted the npkts in the + * flow and the SGE has been sufficiently advanced, we have to + * adjust flow->pkt in order to calculate the correct PSN. + */ + flow->pkt -= flow->resync_npkts; + } if (flow->tid_offset == EXP_TID_GET(flow->tid_entry[tididx], LEN) * PAGE_SIZE) { @@ -3111,13 +3133,42 @@ void hfi1_tid_rdma_restart_req(struct rvt_qp *qp, struct rvt_swqe *wqe, flow->tid_offset = 0; } flow->tid_idx = tididx; - /* Move flow_idx to correct index */ - req->flow_idx = fidx; + if (wqe->wr.opcode == IB_WR_TID_RDMA_READ) + /* Move flow_idx to correct index */ + req->flow_idx = fidx; + else + req->clear_tail = fidx; trace_hfi1_tid_flow_restart_req(qp, fidx, flow); trace_hfi1_tid_req_restart_req(qp, 0, wqe->wr.opcode, wqe->psn, wqe->lpsn, req); req->state = TID_REQUEST_ACTIVE; + if (wqe->wr.opcode == IB_WR_TID_RDMA_WRITE) { + /* Reset all the flows that we are going to resend */ + fidx = CIRC_NEXT(fidx, MAX_FLOWS); + i = qpriv->s_tid_tail; + do { + for (; CIRC_CNT(req->setup_head, fidx, MAX_FLOWS); + fidx = CIRC_NEXT(fidx, MAX_FLOWS)) { + req->flows[fidx].sent = 0; + req->flows[fidx].pkt = 0; + req->flows[fidx].tid_idx = 0; + req->flows[fidx].tid_offset = 0; + req->flows[fidx].resync_npkts = 0; + } + if (i == qpriv->s_tid_cur) + break; + do { + i = (++i == qp->s_size ? 0 : i); + wqe = rvt_get_swqe_ptr(qp, i); + } while (wqe->wr.opcode != IB_WR_TID_RDMA_WRITE); + req = wqe_to_tid_req(wqe); + req->cur_seg = req->ack_seg; + fidx = req->acked_tail; + /* Pull req->clear_tail back */ + req->clear_tail = fidx; + } while (1); + } } void hfi1_qp_kern_exp_rcv_clear_all(struct rvt_qp *qp) diff --git a/drivers/infiniband/hw/hfi1/verbs.h b/drivers/infiniband/hw/hfi1/verbs.h index bfd642e831f7..ce40ea9f43c3 100644 --- a/drivers/infiniband/hw/hfi1/verbs.h +++ b/drivers/infiniband/hw/hfi1/verbs.h @@ -171,6 +171,7 @@ struct hfi1_qp_priv { struct tid_rdma_qp_params tid_rdma; struct rvt_qp *owner; u8 hdr_type; /* 9B or 16B */ + struct rvt_sge_state tid_ss; /* SGE state pointer for 2nd leg */ atomic_t n_tid_requests; /* # of sent TID RDMA requests */ unsigned long tid_timer_timeout_jiffies; unsigned long tid_retry_timeout_jiffies; |