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

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[ Upstream commit 227f51743b61fe3f6fc481f0fb8086bf8c49b8c9 ]

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: de1d364c3815 ("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>
Signed-off-by: Sasha Levin <sashal@kernel.org>
This commit is contained in:
Selvin Xavier
2024-09-04 03:04:13 -07:00
committed by Greg Kroah-Hartman
parent c3b5a7d6a1
commit 36e1b6890f
2 changed files with 12 additions and 11 deletions
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21
drivers/infiniband/hw/bnxt_re/ib_verbs.c
View File

@@ -992,23 +992,22 @@ 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__*/