From mboxrd@z Thu Jan 1 00:00:00 1970 Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.remote-ip=13.77.154.182 ARC-Seal: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; cv=none; t=1793365252; b=AVxStFMoqT6EUN9vrT4YZVZzIEMmTxC/czugu3O55JZCS9kzbXJnrF3Uj+qS620NXsXq lFbvdQtjtUS/g6tXKtsTDtnpu/d7Vn4pnPbqxd6PnsVx39R95iQoWUqhBcA/2nCyPoYO7 YbLZsFY6LAV5SLDFISf/g6EdNFkfldp9RbTyo9Vn9RL7hNa9rRMT2eM7595PsjWUNkV27 JA93m+XZfS8xQ5D7HqBdr0LgR5oG+diS9ywea6/ju+wpeFrw4gzcBMDbvt0q6ckA9hRSR LltGoEIHhfW37x+tIl3rObDt1Q2pyrurwAOQfqz16NBaEU233V74352FoQoSaqdBoWw== ARC-Message-Signature: i=1; d=subspace.kernel.org; s=arc20261015; a=rsa-sha256; c=relaxed/relaxed; t=1793365252; h=DMARC-Filter:Received:DKIM-Filter:DKIM-Signature:From:To:Cc:Subject: Date:Message-ID:X-Mailer:MIME-Version:Content-Transfer-Encoding; bh=FdQI/LAyKYbv+9FCjDCDMznPudCLTAfsdLXbDWfNWWI=; b=mGNm/X5LWgfB2mw2MQsdwkjmjT4h4kmDiql088CYrGJWl+v9vuv75Yyjid4du3tslC9F 3geDN0QCXNA3wY7Yg9MUFG572U4N2nU4sqCtiC3yh3QU3+S2FotqebdHU4mwRu2138TLW u0MB7YEJZ6x/S6bpN/RiVE0qsKbf1fSnFtNIyBOtHi7wRvjs//+MOhiT1WcUOZpWAUQck OYPch6ao0Oh8DAqhnPwMHBxl2wQ1BhtXZmeHxNTo8uv9q/OPeMDSMjp26rEFfHRoZlv9M HJTPRUOtbblqI4eUvZ2Vu84Y+iebluM3ByIAtn7EcIDc9A+YTyej6Hn2gLDEsUuuE+g== ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass header.from=linux.microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; dkim=pass header.d=linux.microsoft.com header.i=@linux.microsoft.com header.a=rsa-sha256 header.s=default header.b=BtXh44zZ; arc=none smtp.remote-ip=13.77.154.182 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id DA506606A321; Fri, 30 Oct 2026 13:00:51 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.2 smtp.subspace.kernel.org DA506606A321 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key, unprotected) header.d=linux.microsoft.com header.i=@linux.microsoft.com header.a=rsa-sha256 header.s=default header.b=BtXh44zZ Received: by linux.microsoft.com (Postfix, from userid 1186) id 657D120B7166; Fri, 30 Oct 2026 06:00:38 -0700 (PDT) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 657D120B7166 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linux.microsoft.com; s=default; t=1793365238; bh=FdQI/LAyKYbv+9FCjDCDMznPudCLTAfsdLXbDWfNWWI=; h=From:To:Cc:Subject:Date:From; b=BtXh44zZdO0mkuPy/0323D/VJ8j03p2F55DmNE5JlD7ct3+5NDuExWxMO9X+IcpfP JzV+J0T4l2Qj/vLmBPqoRg3XHAlE+iuk/J1ok1T5kBYjD1x7Vk1JiNDLBz5CFc/xzz sKYNpsF6pn3DyWxboMKFX8y5YbrQRcyCdw/VIpPY= From: Konstantin Taranov To: kotaranov@microsoft.com, snsanghvi@microsoft.com, longli@microsoft.com, jgg@ziepe.ca, leon@kernel.org Cc: linux-rdma@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH rdma-next v6 00/10] RDMA/mana_ib: Add kernel RC and fast registration support Date: Fri, 30 Oct 2026 06:00:28 -0700 Message-ID: <20261030130038.4040789-1-kotaranov@linux.microsoft.com> X-Mailer: git-send-email 2.43.7 X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Post: List-Help: List-Subscribe: List-Unsubscribe: List-Owner: Precedence: list MIME-Version: 1.0 Content-Transfer-Encoding: 8bit From: Konstantin Taranov Add kernel RC QPs and fast-registration MRs to the MANA RDMA driver for kernel consumers such as NVMe/RDMA and NFS/RDMA. Implement QP creation and state management, work request posting, completion processing, error handling, and queue draining. Kernel RC QPs require extended-WQE and power-of-two-SQ hardware support. Tested with krping, NVMe/RDMA, and NFS/RDMA, including RC send and receive error recovery with krping and NVMe/RDMA. v6: - Patch 08: Notify software flushes after posting to error-listed QPs. Add reporting pending software flush for IB_CQ_REPORT_MISSED_EVENTS. - Patch 09: Check fenced WQEs on error cqes to prevent flushing completed WQEs. Add mana_ib_cq_clean on QP reset to discard stale CQEs. QID 0 is an invalid value for RNIC and safe dor discarding. Add error_pending flag to prevent a deffered ERR request to error reset QPs. v5: - Patch 01: Reject max_num_sg above MANA_MAX_FMR_PAGES. - Patch 02: Validate kernel QP queue sizes and SGE limits to prevent overflows. Ensure that queue size cannnot be 0. - Patch 06: Preserve fence flags on unsignaled WQEs. Check message length and read sges before posting a wqe. - Patch 08: Remove the unused QP state field. v4: - Patch 01: Use an explicit 64-byte FMR MST alignment - Patch 02: Validate that the RNIC firmware reports at least two send SGEs and subtract the reserved SGE only for RNIC-based mana_ib. - Patch 07: Add missing wqe_size to shadow wqe for SEND/Write, and return a missed-event hint for cached CQEs when CQ is armed v3: - Patch 07: Mask arm_psn to 24 bits before ringing the doorbell. - Patch 08: Exclude userspace QPs from kernel software-state handling and CQ error-list insertion, and unlink UC QPs during destruction. v2: - Patch 03: Validate fixed-WQE capacity for the header, OOB and SGEs. - Patch 04: Preserve UC QP modification support. - Patch 08: Skip software CQ notifications for direct-polling CQs. - Patch 09: Flush that ERR work during QP teardown. - Patch 10: Limit drain callbacks to RC QPs and avoid completion callbacks for direct-polling CQs. Konstantin Taranov (10): RDMA/mana_ib: Allocate and map fast-registration MRs RDMA/mana: Create and destroy kernel RC QPs net/mana: Extend GDMA encoding for new RDMA WQEs RDMA/mana_ib: Maintain kernel RC QP state RDMA/mana_ib: Post receive WRs on kernel RC QPs RDMA/mana_ib: Post send and memory-management WRs on RC QPs RDMA/mana_ib: Poll RC completions using PSN and FSN progress RDMA/mana_ib: Flush and notify CQs when kernel QPs enter ERR RDMA/mana_ib: Handle error CQEs for RC QPs RDMA/mana_ib: Drain kernel receive and send queues drivers/infiniband/hw/mana/cq.c | 354 +++++++++++++++++-- drivers/infiniband/hw/mana/device.c | 4 + drivers/infiniband/hw/mana/main.c | 15 +- drivers/infiniband/hw/mana/mana_ib.h | 137 +++++++- drivers/infiniband/hw/mana/mr.c | 87 ++++- drivers/infiniband/hw/mana/qp.c | 427 +++++++++++++++++++++-- drivers/infiniband/hw/mana/shadow_queue.h | 22 ++ drivers/infiniband/hw/mana/wr.c | 433 +++++++++++++++++++++++- drivers/net/ethernet/microsoft/mana/gdma_main.c | 55 ++- include/net/mana/gdma.h | 38 ++- 10 files changed, 1506 insertions(+), 66 deletions(-) -- 2.43.0