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path: root/drivers/infiniband/hw/ipath/ipath_uc.c
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Diffstat (limited to 'drivers/infiniband/hw/ipath/ipath_uc.c')
-rw-r--r--drivers/infiniband/hw/ipath/ipath_uc.c57
1 files changed, 38 insertions, 19 deletions
diff --git a/drivers/infiniband/hw/ipath/ipath_uc.c b/drivers/infiniband/hw/ipath/ipath_uc.c
index bfe8926b5514..7fd18e833907 100644
--- a/drivers/infiniband/hw/ipath/ipath_uc.c
+++ b/drivers/infiniband/hw/ipath/ipath_uc.c
@@ -1,5 +1,5 @@
/*
- * Copyright (c) 2006, 2007 QLogic Corporation. All rights reserved.
+ * Copyright (c) 2006, 2007, 2008 QLogic Corporation. All rights reserved.
* Copyright (c) 2005, 2006 PathScale, Inc. All rights reserved.
*
* This software is available to you under a choice of one of two
@@ -47,14 +47,30 @@ int ipath_make_uc_req(struct ipath_qp *qp)
{
struct ipath_other_headers *ohdr;
struct ipath_swqe *wqe;
+ unsigned long flags;
u32 hwords;
u32 bth0;
u32 len;
u32 pmtu = ib_mtu_enum_to_int(qp->path_mtu);
int ret = 0;
- if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK))
+ spin_lock_irqsave(&qp->s_lock, flags);
+
+ if (!(ib_ipath_state_ops[qp->state] & IPATH_PROCESS_SEND_OK)) {
+ if (!(ib_ipath_state_ops[qp->state] & IPATH_FLUSH_SEND))
+ goto bail;
+ /* We are in the error state, flush the work request. */
+ if (qp->s_last == qp->s_head)
+ goto bail;
+ /* If DMAs are in progress, we can't flush immediately. */
+ if (atomic_read(&qp->s_dma_busy)) {
+ qp->s_flags |= IPATH_S_WAIT_DMA;
+ goto bail;
+ }
+ wqe = get_swqe_ptr(qp, qp->s_last);
+ ipath_send_complete(qp, wqe, IB_WC_WR_FLUSH_ERR);
goto done;
+ }
ohdr = &qp->s_hdr.u.oth;
if (qp->remote_ah_attr.ah_flags & IB_AH_GRH)
@@ -69,9 +85,12 @@ int ipath_make_uc_req(struct ipath_qp *qp)
qp->s_wqe = NULL;
switch (qp->s_state) {
default:
+ if (!(ib_ipath_state_ops[qp->state] &
+ IPATH_PROCESS_NEXT_SEND_OK))
+ goto bail;
/* Check if send work queue is empty. */
if (qp->s_cur == qp->s_head)
- goto done;
+ goto bail;
/*
* Start a new request.
*/
@@ -134,7 +153,7 @@ int ipath_make_uc_req(struct ipath_qp *qp)
break;
default:
- goto done;
+ goto bail;
}
break;
@@ -194,9 +213,14 @@ int ipath_make_uc_req(struct ipath_qp *qp)
ipath_make_ruc_header(to_idev(qp->ibqp.device),
qp, ohdr, bth0 | (qp->s_state << 24),
qp->s_next_psn++ & IPATH_PSN_MASK);
+done:
ret = 1;
+ goto unlock;
-done:
+bail:
+ qp->s_flags &= ~IPATH_S_BUSY;
+unlock:
+ spin_unlock_irqrestore(&qp->s_lock, flags);
return ret;
}
@@ -258,8 +282,7 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
*/
opcode = be32_to_cpu(ohdr->bth[0]) >> 24;
- wc.imm_data = 0;
- wc.wc_flags = 0;
+ memset(&wc, 0, sizeof wc);
/* Compare the PSN verses the expected PSN. */
if (unlikely(ipath_cmp24(psn, qp->r_psn) != 0)) {
@@ -322,8 +345,8 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
case OP(SEND_ONLY):
case OP(SEND_ONLY_WITH_IMMEDIATE):
send_first:
- if (qp->r_reuse_sge) {
- qp->r_reuse_sge = 0;
+ if (qp->r_flags & IPATH_R_REUSE_SGE) {
+ qp->r_flags &= ~IPATH_R_REUSE_SGE;
qp->r_sge = qp->s_rdma_read_sge;
} else if (!ipath_get_rwqe(qp, 0)) {
dev->n_pkt_drops++;
@@ -340,13 +363,13 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
case OP(SEND_MIDDLE):
/* Check for invalid length PMTU or posted rwqe len. */
if (unlikely(tlen != (hdrsize + pmtu + 4))) {
- qp->r_reuse_sge = 1;
+ qp->r_flags |= IPATH_R_REUSE_SGE;
dev->n_pkt_drops++;
goto done;
}
qp->r_rcv_len += pmtu;
if (unlikely(qp->r_rcv_len > qp->r_len)) {
- qp->r_reuse_sge = 1;
+ qp->r_flags |= IPATH_R_REUSE_SGE;
dev->n_pkt_drops++;
goto done;
}
@@ -372,7 +395,7 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
/* Check for invalid length. */
/* XXX LAST len should be >= 1 */
if (unlikely(tlen < (hdrsize + pad + 4))) {
- qp->r_reuse_sge = 1;
+ qp->r_flags |= IPATH_R_REUSE_SGE;
dev->n_pkt_drops++;
goto done;
}
@@ -380,7 +403,7 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
tlen -= (hdrsize + pad + 4);
wc.byte_len = tlen + qp->r_rcv_len;
if (unlikely(wc.byte_len > qp->r_len)) {
- qp->r_reuse_sge = 1;
+ qp->r_flags |= IPATH_R_REUSE_SGE;
dev->n_pkt_drops++;
goto done;
}
@@ -390,14 +413,10 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
wc.wr_id = qp->r_wr_id;
wc.status = IB_WC_SUCCESS;
wc.opcode = IB_WC_RECV;
- wc.vendor_err = 0;
wc.qp = &qp->ibqp;
wc.src_qp = qp->remote_qpn;
- wc.pkey_index = 0;
wc.slid = qp->remote_ah_attr.dlid;
wc.sl = qp->remote_ah_attr.sl;
- wc.dlid_path_bits = 0;
- wc.port_num = 0;
/* Signal completion event if the solicited bit is set. */
ipath_cq_enter(to_icq(qp->ibqp.recv_cq), &wc,
(ohdr->bth[0] &
@@ -488,8 +507,8 @@ void ipath_uc_rcv(struct ipath_ibdev *dev, struct ipath_ib_header *hdr,
dev->n_pkt_drops++;
goto done;
}
- if (qp->r_reuse_sge)
- qp->r_reuse_sge = 0;
+ if (qp->r_flags & IPATH_R_REUSE_SGE)
+ qp->r_flags &= ~IPATH_R_REUSE_SGE;
else if (!ipath_get_rwqe(qp, 1)) {
dev->n_pkt_drops++;
goto done;
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