From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pdx-out-004.esa.us-west-2.outbound.mail-perimeter.amazon.com (pdx-out-004.esa.us-west-2.outbound.mail-perimeter.amazon.com [44.246.77.92]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 82142308F23 for ; Mon, 11 May 2026 22:37:29 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=44.246.77.92 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778539050; cv=none; b=rwnaK4KwCzll1amqNLqVmpP8C+b3W/m95GfBEQz8FAHW8BpT3/8RNe4AJKT+vvwEH2G0eQcA/3L4dD4s7WW8gP2z0TIlRwGGCDJs5vzpwPnCom7yKB66DEnbNfc/wL/g+7CN+y1Ev0EhMAdS4M2TxkWmTEnhQx1eU+7JDr5UyJE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778539050; c=relaxed/simple; bh=fGZ7vndGMyQxPWgHTfFbCZq4FPuVSp81LZiKOtTYYF8=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=H5el4rcE6NPeyATcwmavieTGHgAjJqNR5iZRMSlwaq6ja6FB08iYAs7fS+vnkJ5s0lBEXcQu64cMa+uss5dCMNkoROg6vTENZoHu0LCRztwondO+HRTrq2evKmZs+iPwirAc/nQCnfzxpq8+RIvJ44uoYRQ9u0qi6+5kKRS68sE= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amazon.com; spf=pass smtp.mailfrom=amazon.com; dkim=pass (2048-bit key) header.d=amazon.com header.i=@amazon.com header.b=g+t5ZZwk; arc=none smtp.client-ip=44.246.77.92 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=amazon.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=amazon.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=amazon.com header.i=@amazon.com header.b="g+t5ZZwk" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazoncorp2; t=1778539049; x=1810075049; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=+NlWsrNVIjYDams0OfdFclAGv8sZpWxF20Zgm85SWU4=; b=g+t5ZZwkLCZnKGDRmGKacdVnIeGda2AX0iV7yesEavTWPXjcYTVleAHA +2Ks2NqKE+ymMC2loOSnkmUCHhm8i4m8Rre4+5e7wj+kCV57m56t32ssR qA6k8kvUoYTfmgX+c2cweZ8Be14tGdgwhbUXOQ7MzzDi0x13C6PNhxKbI FY6sTXk///yqr5okUUZgwYo1hf5H6f+rzIRQcrAj5x+j2n7IxJSKRQuMm B8cdlzfT0rKcgeGu6VFD9Vwm48wDYb+OXrhdtTSrRAbsQdwAgLesSF+Nd cCyHQs194Z+TLWt/tw9fHLCXVKebFlZ0XtBQNf8AonVM0dUmfAQAeTfiv Q==; X-CSE-ConnectionGUID: gAJHMyW9QuSQ0cBxQVD+Wg== X-CSE-MsgGUID: MWx+59WUSkSGL5ZddIypAQ== X-IronPort-AV: E=Sophos;i="6.23,229,1770595200"; d="scan'208";a="19392964" Received: from ip-10-5-0-115.us-west-2.compute.internal (HELO smtpout.naws.us-west-2.prod.farcaster.email.amazon.dev) ([10.5.0.115]) by internal-pdx-out-004.esa.us-west-2.outbound.mail-perimeter.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 May 2026 22:37:25 +0000 Received: from EX19MTAUWA001.ant.amazon.com [205.251.233.182:25353] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.52.175:2525] with esmtp (Farcaster) id 3042bacd-02c3-4d56-9c22-96a069dc0ca6; Mon, 11 May 2026 22:37:25 +0000 (UTC) X-Farcaster-Flow-ID: 3042bacd-02c3-4d56-9c22-96a069dc0ca6 Received: from EX19D001UWA001.ant.amazon.com (10.13.138.214) by EX19MTAUWA001.ant.amazon.com (10.250.64.218) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.37; Mon, 11 May 2026 22:37:24 +0000 Received: from dev-dsk-mrgolin-1c-b2091117.eu-west-1.amazon.com (10.253.103.172) by EX19D001UWA001.ant.amazon.com (10.13.138.214) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.37; Mon, 11 May 2026 22:37:22 +0000 From: Michael Margolin To: , , CC: , , Subject: [PATCH for-next v4 0/5] Introduce Completion Counters Date: Mon, 11 May 2026 22:37:16 +0000 Message-ID: <20260511223721.18365-1-mrgolin@amazon.com> X-Mailer: git-send-email 2.47.3 Precedence: bulk X-Mailing-List: linux-rdma@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Content-Type: text/plain X-ClientProxiedBy: EX19D031UWC003.ant.amazon.com (10.13.139.252) To EX19D001UWA001.ant.amazon.com (10.13.138.214) Add core infrastructure for Completion Counters, a light-weight alternative to polling CQ for tracking operation completions. The related rdma-core interface proposal is linked in [1]. Define the UVERBS_OBJECT_COMP_CNTR ioctl object with create, destroy, modify and read methods for both success and error counters. Add a QP attach method on the QP object to associate a completion counter with a queue pair. Add EFA Completion Counters support as first implementer. [1] https://github.com/linux-rdma/rdma-core/pull/1701 --- Changes in v4: - Replaced inc and set commands by a single modify command - Changed to passing buffers as EFA specific attributes using desc struct aligned with the suggested common method of passing and consuming umem in RDMA drivers - Link to v2: https://lore.kernel.org/all/20260416212327.18191-1-mrgolin@amazon.com/ Changes in v3: - Skipped this version because of a wrong patch list Changes in v2: - United set, inc and read flows for successful and error completions counters - Added comp_cntr usage count - Minor cleanups - Link to v1: https://lore.kernel.org/all/20260407115424.13359-1-mrgolin@amazon.com/ *** BLURB HERE *** Michael Margolin (5): RDMA/core: Add Completion Counters support RDMA/core: Prevent destroying in-use completion counters RDMA/core: Add Completion Counters to resource tracking RDMA/efa: Update device interface RDMA/efa: Add Completion Counters support drivers/infiniband/core/Makefile | 1 + drivers/infiniband/core/device.c | 6 + drivers/infiniband/core/nldev.c | 1 + drivers/infiniband/core/rdma_core.h | 1 + drivers/infiniband/core/restrack.c | 2 + drivers/infiniband/core/uverbs_cmd.c | 1 + .../core/uverbs_std_types_comp_cntr.c | 183 ++++++++++++++ drivers/infiniband/core/uverbs_std_types_qp.c | 65 ++++- drivers/infiniband/core/uverbs_uapi.c | 1 + drivers/infiniband/core/verbs.c | 1 + drivers/infiniband/hw/efa/efa.h | 17 +- .../infiniband/hw/efa/efa_admin_cmds_defs.h | 187 +++++++++++++- drivers/infiniband/hw/efa/efa_com_cmd.c | 106 ++++++++ drivers/infiniband/hw/efa/efa_com_cmd.h | 36 +++ drivers/infiniband/hw/efa/efa_io_defs.h | 64 ++++- drivers/infiniband/hw/efa/efa_main.c | 7 +- drivers/infiniband/hw/efa/efa_verbs.c | 229 ++++++++++++++++++ include/rdma/ib_verbs.h | 44 ++++ include/rdma/restrack.h | 4 + include/uapi/rdma/efa-abi.h | 19 ++ include/uapi/rdma/ib_user_ioctl_cmds.h | 38 +++ include/uapi/rdma/ib_user_ioctl_verbs.h | 19 ++ include/uapi/rdma/ib_user_verbs.h | 2 +- 23 files changed, 1024 insertions(+), 10 deletions(-) create mode 100644 drivers/infiniband/core/uverbs_std_types_comp_cntr.c -- 2.47.3