diff options
| author | Selvin Xavier <selvin.xavier@broadcom.com> | 2023-12-13 22:31:24 -0800 |
|---|---|---|
| committer | Leon Romanovsky <leon@kernel.org> | 2023-12-17 15:35:58 +0200 |
| commit | e275919d96693c5ca964b20d73a33d52a7e57f04 (patch) | |
| tree | 740cda6ce4659cb6466459085e191ee190453054 /include/uapi/rdma | |
| parent | 9b0a7a2cb87d9c430a3588d7d2b6e471200b86ad (diff) | |
RDMA/bnxt_re: Share a page to expose per CQ info with userspace
Gen P7 adapters needs to share a toggle bits information received
in kernel driver with the user space. User space needs this
info during the request notify call back to arm the CQ.
User space application can get this page using the
UAPI routines. Library will mmap this page and get the
toggle bits to be used in the next ARM Doorbell.
Uses a hash list to map the CQ structure from the CQ ID.
CQ structure is retrieved from the hash list while the
library calls the UAPI routine to get the toggle page
mapping. Currently the full page is mapped per CQ. This
can be optimized to enable multiple CQs from the same
application share the same page and different offsets
in the page.
Signed-off-by: Selvin Xavier <selvin.xavier@broadcom.com>
Link: https://lore.kernel.org/r/1702535484-26844-3-git-send-email-selvin.xavier@broadcom.com
Signed-off-by: Leon Romanovsky <leon@kernel.org>
Diffstat (limited to 'include/uapi/rdma')
| -rw-r--r-- | include/uapi/rdma/bnxt_re-abi.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/uapi/rdma/bnxt_re-abi.h b/include/uapi/rdma/bnxt_re-abi.h index 9b9eb10cb5e5..c0c34aca90ec 100644 --- a/include/uapi/rdma/bnxt_re-abi.h +++ b/include/uapi/rdma/bnxt_re-abi.h @@ -102,11 +102,16 @@ struct bnxt_re_cq_req { __aligned_u64 cq_handle; }; +enum bnxt_re_cq_mask { + BNXT_RE_CQ_TOGGLE_PAGE_SUPPORT = 0x1, +}; + struct bnxt_re_cq_resp { __u32 cqid; __u32 tail; __u32 phase; __u32 rsvd; + __aligned_u64 comp_mask; }; struct bnxt_re_resize_cq_req { |