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RDMA/bnxt_re: Add support for optimized modify QP

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Modify QP improvements are for state transitions
from INIT -> RTR and RTR -> RTS.
In order to support the Modify QP Optimization feature,
the driver is expected to check for the feature support
in the CMDQ_QUERY_FUNC and register its support for this
feature with the FW in CMDQ_INITIALIZE_FIRMWARE.

Additionally, the driver is required to specify the new
fields and attribute masks for the transitions as follows:
1. INIT -> RTR:
   - New fields: srq_used, type.
   - enable srq_used when RC QP is configured to use SRQ.
   - set the type based on the QP type.
   - Mandatory masks:
     - RC: CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS,
           CMDQ_MODIFY_QP_MODIFY_MASK_PKEY
     - UD QP and QP1: CMDQ_MODIFY_QP_MODIFY_MASK_PKEY,
                      CMDQ_MODIFY_QP_MODIFY_MASK_QKEY
2. RTR -> RTS:
   - New fields: type
   - set the type based on the QP type.
   - Mandatory masks:
     - RC: CMDQ_MODIFY_QP_MODIFY_MASK_ACCESS
     - UD QP and QP1: CMDQ_MODIFY_QP_MODIFY_MASK_QKEY

Reviewed-by: Saravanan Vajravel <saravanan.vajravel@broadcom.com>
Reviewed-by: Tushar Rane <tushar.rane@broadcom.com>
Signed-off-by: Kalesh AP <kalesh-anakkur.purayil@broadcom.com>
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://patch.msgid.link/1729065346-1364-2-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
This commit is contained in:
Kalesh AP 2024-10-16 00:55:42 -07:00 • committed by Leon Romanovsky
commit 82c32d2192
4 changed files with 52 additions and 1 deletions
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