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 40BE843CEEB for ; Thu, 4 Jun 2026 11:46:33 +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=1780573594; cv=none; b=afGp0hDEKeYRsX2GF5SywNrQMDlzF1c0TSrbeD5W3vtfeC9VwL2hvSDlQaeOgb0GhypV22LiWSy/NhOQW59d6Qac2j4l5v2ujrseZkY5yVixF6KBZiu3LiKuuw7/hEdlCiO4M6lguMDThxZBTecSNvzv1iRzC2mIIhY3nV7vzX8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1780573594; c=relaxed/simple; bh=E20/aU/l/snsfFoZCP68irf2Q3+4Rml6jSZbv/YdvZ8=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=fTr8VLjcSrHcuZDdPIRUXu1t6tWxTi4PmufvWuuYmI9RV3AgKFQMg/8tqybWhWKGrT8O49wkESg9PF5hTYM1QD+oHGMbq1dCDlI60361oPVX+ZmiPYo+ABho+9SKIrgov/aXbMyfSt5XTUBvxrbkzW1/acZWSHSYPhMiwlyykqM= 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=kMQLuKEx; 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="kMQLuKEx" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazoncorp2; t=1780573593; x=1812109593; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=Sup+nCKnLt1QZQeaRAhI5R/g9wBvQ/sZgzsyF8zzFcQ=; b=kMQLuKEx8XXK+fzPj2nnkRBO3UhrzFqUAJm5hiCrwyi5YFD1h0E5Af6o /0d//e6ZYnMTqPiB8tq3j+QBc0qa7jzWq3YIyX1ZRIFqViTdAN4EqdOjT NB9uGTZZUWRiASRGZBXopL0Gzi2JDDyZkGy2J3yBXfyboOElzZwkwnJxy djEOMTmh3x8His1Y3FOXkQvzTyTn3raYdyHKeSMNS69hgi/O7xgpeQO5q BJT9hbvuK3QVOF1lJr6DvdSJCIxDx7AGRLLI2Nbth9e8cQwhRTMj4aq3U kXMqVdfV8q6ilU44dR516Z+76z7U5c5hKhMUyDG/Rx+n3EVAojz1osuKv Q==; X-CSE-ConnectionGUID: KBFOtg6dQ+qUZM8juaSvLA== X-CSE-MsgGUID: ujBnKIGGQDek23tN+Y5fEA== X-IronPort-AV: E=Sophos;i="6.24,187,1774310400"; d="scan'208";a="21080189" Received: from ip-10-5-6-203.us-west-2.compute.internal (HELO smtpout.naws.us-west-2.prod.farcaster.email.amazon.dev) ([10.5.6.203]) by internal-pdx-out-004.esa.us-west-2.outbound.mail-perimeter.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 04 Jun 2026 11:46:30 +0000 Received: from EX19MTAUWC001.ant.amazon.com [205.251.233.105:6327] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.40.245:2525] with esmtp (Farcaster) id 81f04ecc-e82e-4825-81dd-81aa36928dd6; Thu, 4 Jun 2026 11:46:30 +0000 (UTC) X-Farcaster-Flow-ID: 81f04ecc-e82e-4825-81dd-81aa36928dd6 Received: from EX19D001UWA001.ant.amazon.com (10.13.138.214) by EX19MTAUWC001.ant.amazon.com (10.250.64.174) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA) id 15.2.2562.37; Thu, 4 Jun 2026 11:46:30 +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; Thu, 4 Jun 2026 11:46:29 +0000 From: Michael Margolin To: , , CC: , , Subject: [PATCH for-next v6 0/5] Introduce Completion Counters Date: Thu, 4 Jun 2026 11:46:22 +0000 Message-ID: <20260604114627.6086-1-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: EX19D044UWA003.ant.amazon.com (10.13.139.43) 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 support 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 --- Chnages in v6: - Moved to using ib_umem_get_attr util - Resolved additional Sashiko comments - Link to v5: https://lore.kernel.org/all/20260526090712.17575-1-mrgolin@amazon.com/ Changes in v5: - Fixed Sashiko findings - Minor naming improvements - Link to v4: https://lore.kernel.org/all/20260511223721.18365-1-mrgolin@amazon.com/ 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/ 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 | 182 ++++++++++++++++ drivers/infiniband/core/uverbs_std_types_qp.c | 64 +++++- drivers/infiniband/core/uverbs_uapi.c | 1 + drivers/infiniband/core/verbs.c | 8 + drivers/infiniband/hw/efa/efa.h | 17 +- .../infiniband/hw/efa/efa_admin_cmds_defs.h | 185 +++++++++++++++- drivers/infiniband/hw/efa/efa_com_cmd.c | 110 ++++++++++ drivers/infiniband/hw/efa/efa_com_cmd.h | 36 ++++ drivers/infiniband/hw/efa/efa_io_defs.h | 63 +++++- drivers/infiniband/hw/efa/efa_main.c | 7 +- drivers/infiniband/hw/efa/efa_verbs.c | 199 ++++++++++++++++++ include/rdma/ib_verbs.h | 44 ++++ include/rdma/restrack.h | 4 + include/uapi/rdma/efa-abi.h | 6 + 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, 987 insertions(+), 10 deletions(-) create mode 100644 drivers/infiniband/core/uverbs_std_types_comp_cntr.c -- 2.47.3