diff options
Diffstat (limited to 'drivers/infiniband')
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_qp.c | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_rc.c | 47 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_sdma.c | 2 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_uc.c | 6 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_ud.c | 17 | ||||
| -rw-r--r-- | drivers/infiniband/hw/qib/qib_verbs.c | 7 |
6 files changed, 26 insertions, 55 deletions
diff --git a/drivers/infiniband/hw/qib/qib_qp.c b/drivers/infiniband/hw/qib/qib_qp.c index e0f65e39076..6c39851d2de 100644 --- a/drivers/infiniband/hw/qib/qib_qp.c +++ b/drivers/infiniband/hw/qib/qib_qp.c @@ -450,7 +450,7 @@ static void clear_mr_refs(struct qib_qp *qp, int clr_sends) * * Flushes both send and receive work queues. * Returns true if last WQE event should be generated. - * The QP s_lock should be held and interrupts disabled. + * The QP r_lock and s_lock should be held and interrupts disabled. * If we are already in error state, just return. */ int qib_error_qp(struct qib_qp *qp, enum ib_wc_status err) diff --git a/drivers/infiniband/hw/qib/qib_rc.c b/drivers/infiniband/hw/qib/qib_rc.c index 40c0a373719..a0931119bd7 100644 --- a/drivers/infiniband/hw/qib/qib_rc.c +++ b/drivers/infiniband/hw/qib/qib_rc.c @@ -868,7 +868,7 @@ done: /* * Back up requester to resend the last un-ACKed request. - * The QP s_lock should be held and interrupts disabled. + * The QP r_lock and s_lock should be held and interrupts disabled. */ static void qib_restart_rc(struct qib_qp *qp, u32 psn, int wait) { @@ -911,7 +911,8 @@ static void rc_timeout(unsigned long arg) struct qib_ibport *ibp; unsigned long flags; - spin_lock_irqsave(&qp->s_lock, flags); + spin_lock_irqsave(&qp->r_lock, flags); + spin_lock(&qp->s_lock); if (qp->s_flags & QIB_S_TIMER) { ibp = to_iport(qp->ibqp.device, qp->port_num); ibp->n_rc_timeouts++; @@ -920,7 +921,8 @@ static void rc_timeout(unsigned long arg) qib_restart_rc(qp, qp->s_last_psn + 1, 1); qib_schedule_send(qp); } - spin_unlock_irqrestore(&qp->s_lock, flags); + spin_unlock(&qp->s_lock); + spin_unlock_irqrestore(&qp->r_lock, flags); } /* @@ -1414,10 +1416,6 @@ static void qib_rc_rcv_resp(struct qib_ibport *ibp, spin_lock_irqsave(&qp->s_lock, flags); - /* Double check we can process this now that we hold the s_lock. */ - if (!(ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK)) - goto ack_done; - /* Ignore invalid responses. */ if (qib_cmp24(psn, qp->s_next_psn) >= 0) goto ack_done; @@ -1661,9 +1659,6 @@ static int qib_rc_rcv_error(struct qib_other_headers *ohdr, ibp->n_rc_dupreq++; spin_lock_irqsave(&qp->s_lock, flags); - /* Double check we can process this now that we hold the s_lock. */ - if (!(ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK)) - goto unlock_done; for (i = qp->r_head_ack_queue; ; i = prev) { if (i == qp->s_tail_ack_queue) @@ -1878,9 +1873,6 @@ void qib_rc_rcv(struct qib_ctxtdata *rcd, struct qib_ib_header *hdr, psn = be32_to_cpu(ohdr->bth[2]); opcode >>= 24; - /* Prevent simultaneous processing after APM on different CPUs */ - spin_lock(&qp->r_lock); - /* * Process responses (ACKs) before anything else. Note that the * packet sequence number will be for something in the send work @@ -1891,14 +1883,14 @@ void qib_rc_rcv(struct qib_ctxtdata *rcd, struct qib_ib_header *hdr, opcode <= OP(ATOMIC_ACKNOWLEDGE)) { qib_rc_rcv_resp(ibp, ohdr, data, tlen, qp, opcode, psn, hdrsize, pmtu, rcd); - goto runlock; + return; } /* Compute 24 bits worth of difference. */ diff = qib_cmp24(psn, qp->r_psn); if (unlikely(diff)) { if (qib_rc_rcv_error(ohdr, data, qp, opcode, psn, diff, rcd)) - goto runlock; + return; goto send_ack; } @@ -2090,9 +2082,6 @@ send_last: if (next > QIB_MAX_RDMA_ATOMIC) next = 0; spin_lock_irqsave(&qp->s_lock, flags); - /* Double check we can process this while holding the s_lock. */ - if (!(ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK)) - goto srunlock; if (unlikely(next == qp->s_tail_ack_queue)) { if (!qp->s_ack_queue[next].sent) goto nack_inv_unlck; @@ -2146,7 +2135,7 @@ send_last: qp->s_flags |= QIB_S_RESP_PENDING; qib_schedule_send(qp); - goto srunlock; + goto sunlock; } case OP(COMPARE_SWAP): @@ -2165,9 +2154,6 @@ send_last: if (next > QIB_MAX_RDMA_ATOMIC) next = 0; spin_lock_irqsave(&qp->s_lock, flags); - /* Double check we can process this while holding the s_lock. */ - if (!(ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK)) - goto srunlock; if (unlikely(next == qp->s_tail_ack_queue)) { if (!qp->s_ack_queue[next].sent) goto nack_inv_unlck; @@ -2213,7 +2199,7 @@ send_last: qp->s_flags |= QIB_S_RESP_PENDING; qib_schedule_send(qp); - goto srunlock; + goto sunlock; } default: @@ -2227,7 +2213,7 @@ send_last: /* Send an ACK if requested or required. */ if (psn & (1 << 31)) goto send_ack; - goto runlock; + return; rnr_nak: qp->r_nak_state = IB_RNR_NAK | qp->r_min_rnr_timer; @@ -2238,7 +2224,7 @@ rnr_nak: atomic_inc(&qp->refcount); list_add_tail(&qp->rspwait, &rcd->qp_wait_list); } - goto runlock; + return; nack_op_err: qib_rc_error(qp, IB_WC_LOC_QP_OP_ERR); @@ -2250,7 +2236,7 @@ nack_op_err: atomic_inc(&qp->refcount); list_add_tail(&qp->rspwait, &rcd->qp_wait_list); } - goto runlock; + return; nack_inv_unlck: spin_unlock_irqrestore(&qp->s_lock, flags); @@ -2264,7 +2250,7 @@ nack_inv: atomic_inc(&qp->refcount); list_add_tail(&qp->rspwait, &rcd->qp_wait_list); } - goto runlock; + return; nack_acc_unlck: spin_unlock_irqrestore(&qp->s_lock, flags); @@ -2274,13 +2260,6 @@ nack_acc: qp->r_ack_psn = qp->r_psn; send_ack: qib_send_rc_ack(qp); -runlock: - spin_unlock(&qp->r_lock); - return; - -srunlock: - spin_unlock_irqrestore(&qp->s_lock, flags); - spin_unlock(&qp->r_lock); return; sunlock: diff --git a/drivers/infiniband/hw/qib/qib_sdma.c b/drivers/infiniband/hw/qib/qib_sdma.c index b8456881f7f..cad44491320 100644 --- a/drivers/infiniband/hw/qib/qib_sdma.c +++ b/drivers/infiniband/hw/qib/qib_sdma.c @@ -656,6 +656,7 @@ unmap: } qp = tx->qp; qib_put_txreq(tx); + spin_lock(&qp->r_lock); spin_lock(&qp->s_lock); if (qp->ibqp.qp_type == IB_QPT_RC) { /* XXX what about error sending RDMA read responses? */ @@ -664,6 +665,7 @@ unmap: } else if (qp->s_wqe) qib_send_complete(qp, qp->s_wqe, IB_WC_GENERAL_ERR); spin_unlock(&qp->s_lock); + spin_unlock(&qp->r_lock); /* return zero to process the next send work request */ goto unlock; diff --git a/drivers/infiniband/hw/qib/qib_uc.c b/drivers/infiniband/hw/qib/qib_uc.c index 6c7fe78cca6..b9c8b6346c1 100644 --- a/drivers/infiniband/hw/qib/qib_uc.c +++ b/drivers/infiniband/hw/qib/qib_uc.c @@ -272,9 +272,6 @@ void qib_uc_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr, opcode >>= 24; memset(&wc, 0, sizeof wc); - /* Prevent simultaneous processing after APM on different CPUs */ - spin_lock(&qp->r_lock); - /* Compare the PSN verses the expected PSN. */ if (unlikely(qib_cmp24(psn, qp->r_psn) != 0)) { /* @@ -534,7 +531,6 @@ rdma_last: } qp->r_psn++; qp->r_state = opcode; - spin_unlock(&qp->r_lock); return; rewind: @@ -542,12 +538,10 @@ rewind: qp->r_sge.num_sge = 0; drop: ibp->n_pkt_drops++; - spin_unlock(&qp->r_lock); return; op_err: qib_rc_error(qp, IB_WC_LOC_QP_OP_ERR); - spin_unlock(&qp->r_lock); return; sunlock: diff --git a/drivers/infiniband/hw/qib/qib_ud.c b/drivers/infiniband/hw/qib/qib_ud.c index c838cda7334..e1b3da2a1f8 100644 --- a/drivers/infiniband/hw/qib/qib_ud.c +++ b/drivers/infiniband/hw/qib/qib_ud.c @@ -535,13 +535,6 @@ void qib_ud_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr, wc.byte_len = tlen + sizeof(struct ib_grh); /* - * We need to serialize getting a receive work queue entry and - * generating a completion for it against QPs sending to this QP - * locally. - */ - spin_lock(&qp->r_lock); - - /* * Get the next work request entry to find where to put the data. */ if (qp->r_flags & QIB_R_REUSE_SGE) @@ -552,19 +545,19 @@ void qib_ud_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr, ret = qib_get_rwqe(qp, 0); if (ret < 0) { qib_rc_error(qp, IB_WC_LOC_QP_OP_ERR); - goto bail_unlock; + return; } if (!ret) { if (qp->ibqp.qp_num == 0) ibp->n_vl15_dropped++; - goto bail_unlock; + return; } } /* Silently drop packets which are too big. */ if (unlikely(wc.byte_len > qp->r_len)) { qp->r_flags |= QIB_R_REUSE_SGE; ibp->n_pkt_drops++; - goto bail_unlock; + return; } if (has_grh) { qib_copy_sge(&qp->r_sge, &hdr->u.l.grh, @@ -579,7 +572,7 @@ void qib_ud_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr, qp->r_sge.sge = *qp->r_sge.sg_list++; } if (!test_and_clear_bit(QIB_R_WRID_VALID, &qp->r_aflags)) - goto bail_unlock; + return; wc.wr_id = qp->r_wr_id; wc.status = IB_WC_SUCCESS; wc.opcode = IB_WC_RECV; @@ -601,7 +594,5 @@ void qib_ud_rcv(struct qib_ibport *ibp, struct qib_ib_header *hdr, qib_cq_enter(to_icq(qp->ibqp.recv_cq), &wc, (ohdr->bth[0] & cpu_to_be32(IB_BTH_SOLICITED)) != 0); -bail_unlock: - spin_unlock(&qp->r_lock); bail:; } diff --git a/drivers/infiniband/hw/qib/qib_verbs.c b/drivers/infiniband/hw/qib/qib_verbs.c index cda8f4173d2..9fab4048885 100644 --- a/drivers/infiniband/hw/qib/qib_verbs.c +++ b/drivers/infiniband/hw/qib/qib_verbs.c @@ -550,10 +550,12 @@ static void qib_qp_rcv(struct qib_ctxtdata *rcd, struct qib_ib_header *hdr, { struct qib_ibport *ibp = &rcd->ppd->ibport_data; + spin_lock(&qp->r_lock); + /* Check for valid receive state. */ if (!(ib_qib_state_ops[qp->state] & QIB_PROCESS_RECV_OK)) { ibp->n_pkt_drops++; - return; + goto unlock; } switch (qp->ibqp.qp_type) { @@ -577,6 +579,9 @@ static void qib_qp_rcv(struct qib_ctxtdata *rcd, struct qib_ib_header *hdr, default: break; } + +unlock: + spin_unlock(&qp->r_lock); } /** |