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RDMA/bnxt_re: Update sq depth for app allocated QPs

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For app allocated QPs, there's no need to reserve extra slots.
The application accounts for this while allocating the SQ.

Link: https://patch.msgid.link/r/20260519150041.7251-4-sriharsha.basavapatna@broadcom.com
Signed-off-by: Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com>
Reviewed-by: Selvin Xavier <selvin.xavier@broadcom.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
This commit is contained in:
Sriharsha Basavapatna 2026-05-19 20:30:35 +05:30 committed by Jason Gunthorpe
parent a3d27ad018
commit 6e27c30bfd
1 changed files with 15 additions and 9 deletions
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24
drivers/infiniband/hw/bnxt_re/ib_verbs.c
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@ -1541,7 +1541,8 @@ static void bnxt_re_adjust_gsi_rq_attr(struct bnxt_re_qp *qp)
static int bnxt_re_init_sq_attr(struct bnxt_re_qp *qp,
struct ib_qp_init_attr *init_attr,
struct bnxt_re_ucontext *uctx,
struct bnxt_re_qp_req *ureq)
struct bnxt_re_qp_req *ureq,
bool fixed_que_attr)
{
struct bnxt_qplib_dev_attr *dev_attr;
struct bnxt_qplib_qp *qplqp;
@ -1582,13 +1583,18 @@ static int bnxt_re_init_sq_attr(struct bnxt_re_qp *qp,
sq->max_sw_wqe = sq->max_wqe;
}
sq->q_full_delta = diff + 1;
/*
* Reserving one slot for Phantom WQE. Application can
* post one extra entry in this case. But allowing this to avoid
* unexpected Queue full condition
*/
qplqp->sq.q_full_delta -= 1;
if (!fixed_que_attr) {
sq->q_full_delta = diff + 1;
/*
* Reserving one slot for Phantom WQE. Application can
* post one extra entry in this case. But allowing this to avoid
* unexpected Queue full condition
*/
qplqp->sq.q_full_delta -= 1;
} else {
sq->q_full_delta = 0;
}
qplqp->sq.sg_info.pgsize = PAGE_SIZE;
qplqp->sq.sg_info.pgshft = PAGE_SHIFT;
@ -1737,7 +1743,7 @@ static int bnxt_re_init_qp_attr(struct bnxt_re_qp *qp, struct bnxt_re_pd *pd,
bnxt_re_adjust_gsi_rq_attr(qp);
/* Setup SQ */
rc = bnxt_re_init_sq_attr(qp, init_attr, uctx, ureq);
rc = bnxt_re_init_sq_attr(qp, init_attr, uctx, ureq, fixed_que_attr);
if (rc)
return rc;
if (init_attr->qp_type == IB_QPT_GSI)