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RDMA/bnxt_re: Fix reporting maximum SRQs on P7 chips

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Firmware reports support for additional SRQs in the max_srq_ext field.
In CREQ_QUERY_FUNC response, if MAX_SRQ_EXTENDED flag is set, driver
should derive the total number of max SRQs by the summation of
"max_srq" and "max_srq_ext" fields.

Fixes: b1b66ae094 ("bnxt_en: Use FW defined resource limits for RoCE")
Reviewed-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Preethi G <preethi.gurusiddalingeswaraswamy@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1741021178-2569-4-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Preethi G 2025-03-03 08:59:38 -08:00 committed by Leon Romanovsky
parent 67ee8d4965
commit e8e6087c2f
3 changed files with 10 additions and 1 deletions
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5
drivers/infiniband/hw/bnxt_re/qplib_res.h
View File

@ -607,4 +607,9 @@ static inline bool _is_cq_coalescing_supported(u16 dev_cap_ext_flags2)
return dev_cap_ext_flags2 & CREQ_QUERY_FUNC_RESP_SB_CQ_COALESCING_SUPPORTED;
}
static inline bool _is_max_srq_ext_supported(u16 dev_cap_ext_flags_2)
{
return !!(dev_cap_ext_flags_2 & CREQ_QUERY_FUNC_RESP_SB_MAX_SRQ_EXTENDED);
}
#endif /* __BNXT_QPLIB_RES_H__ */

3
drivers/infiniband/hw/bnxt_re/qplib_sp.c
View File

@ -176,6 +176,9 @@ int bnxt_qplib_get_dev_attr(struct bnxt_qplib_rcfw *rcfw)
attr->dev_cap_flags = le16_to_cpu(sb->dev_cap_flags);
attr->dev_cap_flags2 = le16_to_cpu(sb->dev_cap_ext_flags_2);
if (_is_max_srq_ext_supported(attr->dev_cap_flags2))
attr->max_srq += le16_to_cpu(sb->max_srq_ext);
bnxt_qplib_query_version(rcfw, attr->fw_ver);
for (i = 0; i < MAX_TQM_ALLOC_REQ / 4; i++) {

3
drivers/infiniband/hw/bnxt_re/roce_hsi.h
View File

@ -2215,11 +2215,12 @@ struct creq_query_func_resp_sb {
#define CREQ_QUERY_FUNC_RESP_SB_REQ_RETRANSMISSION_SUPPORT_IQM_MSN_TABLE (0x2UL << 4)
#define CREQ_QUERY_FUNC_RESP_SB_REQ_RETRANSMISSION_SUPPORT_LAST \
CREQ_QUERY_FUNC_RESP_SB_REQ_RETRANSMISSION_SUPPORT_IQM_MSN_TABLE
#define CREQ_QUERY_FUNC_RESP_SB_MAX_SRQ_EXTENDED 0x40UL
#define CREQ_QUERY_FUNC_RESP_SB_MIN_RNR_RTR_RTS_OPT_SUPPORTED 0x1000UL
__le16 max_xp_qp_size;
__le16 create_qp_batch_size;
__le16 destroy_qp_batch_size;
__le16 reserved16;
__le16 max_srq_ext;
__le64 reserved64;
};