diff options
| author | Sriharsha Basavapatna <sriharsha.basavapatna@broadcom.com> | 2026-03-02 14:00:36 +0300 |
|---|---|---|
| committer | Jason Gunthorpe <jgg@nvidia.com> | 2026-03-08 13:20:25 +0300 |
| commit | a06165a705eefff4b524ad72c50c9ad82bdf4fae (patch) | |
| tree | a6c2ffdc86215494c3f8c958f16cfb5398f2e199 /include | |
| parent | cec5157b6c73e3e43ce868b7726dfece8891c1f8 (diff) | |
| download | linux-a06165a705eefff4b524ad72c50c9ad82bdf4fae.tar.xz | |
RDMA/bnxt_re: Support application specific CQs
This patch supports application allocated memory for CQs.
The application allocates and manages the CQs directly. To support
this, the driver exports a new comp_mask to indicate direct control
of the CQ. When this comp_mask bit is set in the ureq, the driver
maps this application allocated CQ memory into hardware. As the
application manages this memory, the CQ depth ('cqe') passed by it
must be used as is and the driver shouldn't update it.
For CQs, ib_core supports pinning dmabuf based application memory,
specified through provider attributes. This umem is mananged by the
ib_core and is available in ib_cq. Register 'create_cq_user' devop
to process this umem. The driver also supports the legacy interface
that allocates umem internally.
Link: https://patch.msgid.link/r/20260302110036.36387-7-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>
Diffstat (limited to 'include')
| -rw-r--r-- | include/uapi/rdma/bnxt_re-abi.h | 7 |
1 files changed, 6 insertions, 1 deletions
diff --git a/include/uapi/rdma/bnxt_re-abi.h b/include/uapi/rdma/bnxt_re-abi.h index ef14e24836b1..40955eaba32e 100644 --- a/include/uapi/rdma/bnxt_re-abi.h +++ b/include/uapi/rdma/bnxt_re-abi.h @@ -102,12 +102,17 @@ struct bnxt_re_pd_resp { struct bnxt_re_cq_req { __aligned_u64 cq_va; __aligned_u64 cq_handle; + __aligned_u64 comp_mask; }; -enum bnxt_re_cq_mask { +enum bnxt_re_resp_cq_mask { BNXT_RE_CQ_TOGGLE_PAGE_SUPPORT = 0x1, }; +enum bnxt_re_req_cq_mask { + BNXT_RE_CQ_FIXED_NUM_CQE_ENABLE = 0x1, +}; + struct bnxt_re_cq_resp { __u32 cqid; __u32 tail; |