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RDMA/bnxt_re: Update msn table size for app allocated QPs

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For app allocated QPs, the driver shouldn't use slots/round-up logic
to compute the msn table size. The application handles this logic
and computes 'sq_npsn' and passes it to the driver using a new uapi
parameter.

Link: https://patch.msgid.link/r/20260519150041.7251-5-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 20:30:36 +05:30 committed by Jason Gunthorpe
parent 6e27c30bfd
commit 9ce2a8c81c
2 changed files with 40 additions and 22 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

61
drivers/infiniband/hw/bnxt_re/ib_verbs.c
View File

@ -1159,29 +1159,39 @@ static int bnxt_re_setup_sginfo(struct bnxt_re_dev *rdev,
static int bnxt_re_get_psn_bytes(struct bnxt_re_dev *rdev,
struct bnxt_re_ucontext *cntx,
struct bnxt_qplib_qp *qplib_qp,
struct bnxt_re_qp_req *ureq)
struct bnxt_re_qp_req *ureq,
bool fixed_que_attr)
{
int psn_sz, psn_nume;
psn_sz = bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx) ?
sizeof(struct sq_psn_search_ext) :
sizeof(struct sq_psn_search);
if (cntx && bnxt_re_is_var_size_supported(rdev, cntx)) {
psn_nume = ureq->sq_slots;
if (rdev->dev_attr &&
_is_host_msn_table(rdev->dev_attr->dev_cap_flags2))
psn_sz = sizeof(struct sq_msn_search);
else
psn_sz = bnxt_qplib_is_chip_gen_p5_p7(rdev->chip_ctx) ?
sizeof(struct sq_psn_search_ext) :
sizeof(struct sq_psn_search);
if (!fixed_que_attr) {
if (cntx && bnxt_re_is_var_size_supported(rdev, cntx)) {
psn_nume = ureq->sq_slots;
} else {
psn_nume = (qplib_qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
qplib_qp->sq.max_wqe : ((qplib_qp->sq.max_wqe * qplib_qp->sq.wqe_size) /
sizeof(struct bnxt_qplib_sge));
}
if (_is_host_msn_table(rdev->qplib_res.dattr->dev_cap_flags2))
psn_nume = roundup_pow_of_two(psn_nume);
} else {
psn_nume = (qplib_qp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) ?
qplib_qp->sq.max_wqe : ((qplib_qp->sq.max_wqe * qplib_qp->sq.wqe_size) /
sizeof(struct bnxt_qplib_sge));
psn_nume = ureq->sq_npsn;
}
if (_is_host_msn_table(rdev->qplib_res.dattr->dev_cap_flags2))
psn_nume = roundup_pow_of_two(psn_nume);
return psn_nume * psn_sz;
}
static int bnxt_re_init_user_qp(struct bnxt_re_dev *rdev, struct bnxt_re_pd *pd,
struct bnxt_re_qp *qp, struct bnxt_re_ucontext *cntx,
struct bnxt_re_qp_req *ureq)
struct bnxt_re_qp_req *ureq,
bool fixed_que_attr)
{
struct bnxt_qplib_qp *qplib_qp;
struct ib_umem *umem;
@ -1193,7 +1203,7 @@ static int bnxt_re_init_user_qp(struct bnxt_re_dev *rdev, struct bnxt_re_pd *pd,
bytes = (qplib_qp->sq.max_wqe * qplib_qp->sq.wqe_size);
/* Consider mapping PSN search memory only for RC QPs. */
if (qplib_qp->type == CMDQ_CREATE_QP_TYPE_RC)
bytes += bnxt_re_get_psn_bytes(rdev, cntx, qplib_qp, ureq);
bytes += bnxt_re_get_psn_bytes(rdev, cntx, qplib_qp, ureq, fixed_que_attr);
bytes = PAGE_ALIGN(bytes);
umem = ib_umem_get(&rdev->ibdev, ureq->qpsva, bytes,
@ -1647,7 +1657,9 @@ static int bnxt_re_init_qp_type(struct bnxt_re_dev *rdev,
return qptype;
}
static void bnxt_re_qp_calculate_msn_psn_size(struct bnxt_re_qp *qp)
static void bnxt_re_qp_calculate_msn_psn_size(struct bnxt_re_qp *qp,
bool fixed_que_attr,
struct bnxt_re_qp_req *req)
{
struct bnxt_qplib_qp *qplib_qp = &qp->qplib_qp;
struct bnxt_qplib_q *sq = &qplib_qp->sq;
@ -1670,12 +1682,17 @@ static void bnxt_re_qp_calculate_msn_psn_size(struct bnxt_re_qp *qp)
/* Update msn tbl size */
if (qplib_qp->is_host_msn_tbl && qplib_qp->psn_sz) {
if (wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC)
qplib_qp->msn_tbl_sz =
roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, wqe_mode));
else
qplib_qp->msn_tbl_sz =
roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, wqe_mode)) / 2;
if (!fixed_que_attr) {
if (wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC)
qplib_qp->msn_tbl_sz =
roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, wqe_mode));
else
qplib_qp->msn_tbl_sz =
roundup_pow_of_two(bnxt_qplib_set_sq_size(sq, wqe_mode))
/ 2;
} else {
qplib_qp->msn_tbl_sz = req->sq_npsn;
}
qplib_qp->msn = 0;
}
}
@ -1750,12 +1767,12 @@ static int bnxt_re_init_qp_attr(struct bnxt_re_qp *qp, struct bnxt_re_pd *pd,
bnxt_re_adjust_gsi_sq_attr(qp, init_attr, uctx);
if (uctx) { /* This will update DPI and qp_handle */
rc = bnxt_re_init_user_qp(rdev, pd, qp, uctx, ureq);
rc = bnxt_re_init_user_qp(rdev, pd, qp, uctx, ureq, fixed_que_attr);
if (rc)
return rc;
}
bnxt_re_qp_calculate_msn_psn_size(qp);
bnxt_re_qp_calculate_msn_psn_size(qp, fixed_que_attr, ureq);
rc = bnxt_re_setup_qp_hwqs(qp);
if (rc)

1
include/uapi/rdma/bnxt_re-abi.h
View File

@ -135,6 +135,7 @@ struct bnxt_re_qp_req {
__aligned_u64 qp_handle;
__aligned_u64 comp_mask;
__u32 sq_slots;
__u32 sq_npsn;
};
struct bnxt_re_qp_resp {