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RDMA/bnxt_re: Fix the max WQE size for static WQE support

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When variable size WQE is supported, max_qp_sges reported
is more than 6. For devices that supports variable size WQE,
the Send WQE size calculation is wrong when an an older library
that doesn't support variable size WQE is used.

Set the WQE size to 128 when static WQE is supported.

Fixes: de1d364c38 ("RDMA/bnxt_re: Add support for Variable WQE in Genp7 adapters")
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1725444253-13221-3-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Selvin Xavier 2024-09-04 03:04:13 -07:00 committed by Leon Romanovsky
parent c6b2b5c86d
commit 227f51743b
2 changed files with 12 additions and 11 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

21
drivers/infiniband/hw/bnxt_re/ib_verbs.c
View File

@ -1006,23 +1006,22 @@ static int bnxt_re_setup_swqe_size(struct bnxt_re_qp *qp,
align = sizeof(struct sq_send_hdr);
ilsize = ALIGN(init_attr->cap.max_inline_data, align);
sq->wqe_size = bnxt_re_get_wqe_size(ilsize, sq->max_sge);
if (sq->wqe_size > bnxt_re_get_swqe_size(dev_attr->max_qp_sges))
return -EINVAL;
/* For gen p4 and gen p5 backward compatibility mode
* wqe size is fixed to 128 bytes
/* For gen p4 and gen p5 fixed wqe compatibility mode
* wqe size is fixed to 128 bytes - ie 6 SGEs
*/
if (sq->wqe_size < bnxt_re_get_swqe_size(dev_attr->max_qp_sges) &&
qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC)
sq->wqe_size = bnxt_re_get_swqe_size(dev_attr->max_qp_sges);
if (qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC) {
sq->wqe_size = bnxt_re_get_swqe_size(BNXT_STATIC_MAX_SGE);
sq->max_sge = BNXT_STATIC_MAX_SGE;
} else {
sq->wqe_size = bnxt_re_get_wqe_size(ilsize, sq->max_sge);
if (sq->wqe_size > bnxt_re_get_swqe_size(dev_attr->max_qp_sges))
return -EINVAL;
}
if (init_attr->cap.max_inline_data) {
qplqp->max_inline_data = sq->wqe_size -
sizeof(struct sq_send_hdr);
init_attr->cap.max_inline_data = qplqp->max_inline_data;
if (qplqp->wqe_mode == BNXT_QPLIB_WQE_MODE_STATIC)
sq->max_sge = qplqp->max_inline_data /
sizeof(struct sq_sge);
}
return 0;

2
drivers/infiniband/hw/bnxt_re/qplib_sp.h
View File

@ -358,4 +358,6 @@ int bnxt_qplib_modify_cc(struct bnxt_qplib_res *res,
#define BNXT_VAR_MAX_SGE 13
#define BNXT_RE_MAX_RQ_WQES 65536
#define BNXT_STATIC_MAX_SGE 6
#endif /* __BNXT_QPLIB_SP_H__*/