From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pdx-out-011.esa.us-west-2.outbound.mail-perimeter.amazon.com (pdx-out-011.esa.us-west-2.outbound.mail-perimeter.amazon.com [52.35.192.45]) (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 EFE4F42315B for ; Wed, 1 Jul 2026 10:34:54 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=52.35.192.45 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782902100; cv=none; b=ArBGjUgitonR6GPkjorIhyiMSf8LJhLKSTYFt+bn9xG3qJr9FuW7FYFoaRWlJhohBdMi8I4wsYJIwOkbaMRJT9JzlCNhS5lxkyAM2pvojsZkiJelB6HnfvGE9PcIGjbe2IGQ01evSmrdOnBRdCFgt6FlFbZpdXiYaBBYuEEFvmA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782902100; c=relaxed/simple; bh=bBdYGxhd3klCZw51B4iBPmdK/NYngSTsaP1FZVIQgyY=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=LBCzzakVeiYfYBspHM5M5WhUI7+BGHKZKAXcfclEUsZm+OrJdOO28+7O2yywM4bP/5kQo8w20Xk5zbV0Lo0Rv3M5Kya5cP3VJ0aUVFRVUTeYU4bC8XpUtmyUvsEOriAnbEArh0szxfzUzr+EGtW2JpjoA2A+lImNv62PrXw7uuA= 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=XJtCAUAB; arc=none smtp.client-ip=52.35.192.45 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="XJtCAUAB" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazoncorp2; t=1782902095; x=1814438095; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=mYtz4d3gR1XyKG2PCPnhBMPj4lQ/o6B53taffPcQexY=; b=XJtCAUABwIdLEb0kj54c5th2eo1nlzyFxWJY2XHgCn/RvHxDtg+ovgGh Di8BDAByrCnYTLpF+UjeFXEZKYtAhB/F83ZEk3NeYFkcPuLdBBeRsd2sf BS3cqVUSOkGasmdmORMSbn0WAWcjihRbspaOruCe8mK82JrLOfx0HOqaF oSvXJstpBnu7eFmdA3ndVfgdnevQtJnPs6r/dOmPL4PZIcwO/DvI4cBsS XLrIeqtrAJmDNXEJOhx3/F7EZjDXczlSy6NVkG4qyY7o+rnOJ4X8+6NjE VM+A1hH+fBdMIwrspn76mM/rYkJI+oAjQNHfNTNZrRKcgzkNqjHC1xLxB g==; X-CSE-ConnectionGUID: NlD4otbaQl6gKd6PRCgTmw== X-CSE-MsgGUID: enJgY4C7T56Ot/XNHfADBQ== X-IronPort-AV: E=Sophos;i="6.25,141,1779148800"; d="scan'208";a="22613279" Received: from ip-10-5-9-48.us-west-2.compute.internal (HELO smtpout.naws.us-west-2.prod.farcaster.email.amazon.dev) ([10.5.9.48]) by internal-pdx-out-011.esa.us-west-2.outbound.mail-perimeter.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 01 Jul 2026 10:34:51 +0000 Received: from EX19MTAUWC001.ant.amazon.com [205.251.233.105:12364] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.41.143:2525] with esmtp (Farcaster) id 402461da-8607-4ef3-8bd3-830af624e937; Wed, 1 Jul 2026 10:34:51 +0000 (UTC) X-Farcaster-Flow-ID: 402461da-8607-4ef3-8bd3-830af624e937 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 15.2.2562.43; Wed, 1 Jul 2026 10:34:51 +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 15.2.2562.43; Wed, 1 Jul 2026 10:34:50 +0000 From: Michael Margolin To: , , CC: , , Subject: [PATCH for-next v7 0/5] Introduce Completion Counters Date: Wed, 1 Jul 2026 10:34:43 +0000 Message-ID: <20260701103448.17895-1-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: EX19D032UWA002.ant.amazon.com (10.13.139.81) 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 --- Changes in v7: - Rebased on latest rdma for-next - Link to v6: https://lore.kernel.org/all/20260604114627.6086-1-mrgolin@amazon.com/ Changes 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