diff options
| author | Mitko Haralanov <mitko.haralanov@intel.com> | 2018-02-01 10:46:07 -0800 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@mellanox.com> | 2018-02-01 15:24:32 -0700 |
| commit | 9636258f103bac6853e280beecf9e85674736a6a (patch) | |
| tree | d74a14a1f7ea52ee2c51a717e3761ffef353fb5b /drivers/infiniband/hw/hfi1/qp.c | |
| parent | 2b1e7fe16124e86ee9242aeeee859c79a843e3a2 (diff) | |
IB/hfi1: Remove dependence on qp->s_hdrwords
The s_hdrwords variable was used to indicate whether a
packet was already built on a previous iteration of the
send engine. This variable assumed the protection of the
QP's RVT_S_BUSY flag, which was required since the the
QP's s_lock was dropped just prior to the packet being
queued on the one of the egress mechanisms.
Support for multiple send engine instantiations require
that the field not be used due to concurency issues.
The ps.txreq signals the "already built" without the
potential concurency issues.
Fix by getting rid of all s_hdrword usage. A wrapper
is added to test for the already built case that used to
use s_hdrwords.
What used to be stored in s_hdrwords is now in the txreq.
The PBC is not counted, but is added in the pio/sdma code
paths prior to posting the packet.
Reviewed-by: Don Hiatt <don.hiatt@intel.com>
Signed-off-by: Mitko Haralanov <mitko.haralanov@intel.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@intel.com>
Signed-off-by: Dennis Dalessandro <dennis.dalessandro@intel.com>
Signed-off-by: Jason Gunthorpe <jgg@mellanox.com>
Diffstat (limited to 'drivers/infiniband/hw/hfi1/qp.c')
| -rw-r--r-- | drivers/infiniband/hw/hfi1/qp.c | 4 |
1 files changed, 1 insertions, 3 deletions
diff --git a/drivers/infiniband/hw/hfi1/qp.c b/drivers/infiniband/hw/hfi1/qp.c index 5507910e8b8a..d30dd1a5b0a6 100644 --- a/drivers/infiniband/hw/hfi1/qp.c +++ b/drivers/infiniband/hw/hfi1/qp.c @@ -565,7 +565,7 @@ void qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter) if (qp->s_ack_queue) e = &qp->s_ack_queue[qp->s_tail_ack_queue]; seq_printf(s, - "N %d %s QP %x R %u %s %u %u %u f=%x %u %u %u %u %u %u SPSN %x %x %x %x %x RPSN %x S(%u %u %u %u %u %u %u) R(%u %u %u) RQP %x LID %x SL %u MTU %u %u %u %u %u SDE %p,%u SC %p,%u SCQ %u %u PID %d OS %x %x E %x %x %x RNR %d %s %d\n", + "N %d %s QP %x R %u %s %u %u f=%x %u %u %u %u %u %u SPSN %x %x %x %x %x RPSN %x S(%u %u %u %u %u %u %u) R(%u %u %u) RQP %x LID %x SL %u MTU %u %u %u %u %u SDE %p,%u SC %p,%u SCQ %u %u PID %d OS %x %x E %x %x %x RNR %d %s %d\n", iter->n, qp_idle(qp) ? "I" : "B", qp->ibqp.qp_num, @@ -573,7 +573,6 @@ void qp_iter_print(struct seq_file *s, struct rvt_qp_iter *iter) qp_type_str[qp->ibqp.qp_type], qp->state, wqe ? wqe->wr.opcode : 0, - qp->s_hdrwords, qp->s_flags, iowait_sdma_pending(&priv->s_iowait), iowait_pio_pending(&priv->s_iowait), @@ -795,7 +794,6 @@ void notify_error_qp(struct rvt_qp *qp) } if (!(qp->s_flags & RVT_S_BUSY)) { - qp->s_hdrwords = 0; if (qp->s_rdma_mr) { rvt_put_mr(qp->s_rdma_mr); qp->s_rdma_mr = NULL; |