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i40iw: Send last streaming mode message for loopback connections

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Send a zero length last streaming mode message for loopback
connections to synchronize between accepting QP and connecting QP.
This avoids data transfer to start on the accepting QP before
the connecting QP is in RTS. Also remove function i40iw_loopback_nop()
as it is no longer used.

Fixes: f27b4746f3 ("i40iw: add connection management code")

Signed-off-by: Tatyana Nikolova <tatyana.e.nikolova@intel.com>
Signed-off-by: Shiraz Saleem <shiraz.saleem@intel.com>
Signed-off-by: Doug Ledford <dledford@redhat.com>
This commit is contained in:
Tatyana Nikolova 2016-08-24 13:59:17 -05:00 committed by Doug Ledford
parent 3c199b4523
commit 07c72d7d54
1 changed files with 1 additions and 21 deletions
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22
drivers/infiniband/hw/i40iw/i40iw_cm.c
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@ -3346,26 +3346,6 @@ int i40iw_cm_disconn(struct i40iw_qp *iwqp)
return 0;
}
/**
* i40iw_loopback_nop - Send a nop
* @qp: associated hw qp
*/
static void i40iw_loopback_nop(struct i40iw_sc_qp *qp)
{
u64 *wqe;
u64 header;
wqe = qp->qp_uk.sq_base->elem;
set_64bit_val(wqe, 0, 0);
set_64bit_val(wqe, 8, 0);
set_64bit_val(wqe, 16, 0);
header = LS_64(I40IWQP_OP_NOP, I40IWQPSQ_OPCODE) |
LS_64(0, I40IWQPSQ_SIGCOMPL) |
LS_64(qp->qp_uk.swqe_polarity, I40IWQPSQ_VALID);
set_64bit_val(wqe, 24, header);
}
/**
* i40iw_qp_disconnect - free qp and close cm
* @iwqp: associate qp for the connection
@ -3638,7 +3618,7 @@ int i40iw_accept(struct iw_cm_id *cm_id, struct iw_cm_conn_param *conn_param)
} else {
if (iwqp->page)
iwqp->sc_qp.qp_uk.sq_base = kmap(iwqp->page);
i40iw_loopback_nop(&iwqp->sc_qp);
dev->iw_priv_qp_ops->qp_send_lsmm(&iwqp->sc_qp, NULL, 0, 0);
}
if (iwqp->page)