From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from pdx-out-002.esa.us-west-2.outbound.mail-perimeter.amazon.com (pdx-out-002.esa.us-west-2.outbound.mail-perimeter.amazon.com [44.246.1.125]) (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 D2B984D90BF for ; Mon, 11 May 2026 21:35:57 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=44.246.1.125 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778535359; cv=none; b=DhTfavYt51NTbag+xF8C1AE34S/uD2x7ZrNqb1cRTPrQaxaHHh4KI5efbcKxCU363oLfasSJHCBTkkbDKPNhrclEZJePQMO/5zi9JyNxFtUGmlBPVGm3uajlgKmFU1/CDzHTfjxlcB60XrBNy+mEkn6BnSRz7ojKTraCD/JA8T8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1778535359; c=relaxed/simple; bh=2lh1JxscjI/JPNbzMJoehpwVuxBEBs4qwVyiuXN5x/I=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=aeCnhlTU8S5V0rTsJs1JM0m+qW16gCHv/tA0ZbvPsPQD6Owfm1dwmxI6EZf2DcLYow1kjTW/Zt4P41Cd3q2sKntZp29LfqZHp2MZPLE/lEJ4yEavV2syeat4eJZFX3UCmWj6tSSVfMksdkVKWxfnlr8tX0UTwSvUuKF7B8fa9CE= 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=tywiAdkf; arc=none smtp.client-ip=44.246.1.125 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="tywiAdkf" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=amazon.com; i=@amazon.com; q=dns/txt; s=amazoncorp2; t=1778535357; x=1810071357; h=from:to:cc:subject:date:message-id:mime-version: content-transfer-encoding; bh=iskYTQm+jOW+tX+HPkah7bwFchJFvmgIplWxI91KJJk=; b=tywiAdkfFGyIi2tiEnBtLjtyDm8sF9qkvLjnvtpM27ZuGdq7zAGlsAVS GzWm5G2AvC6LwgL3U+ZT8aoBHEj34NmE6x2qoLhs5M20p/JPkE12s0sdl +PKQ1X3sqoJVrAF9I69cVNIpoDs59EntoXMQGAN+L5cmtfcsfeAU47SLn n8rSDAucAMO2jqKl3QMRmruNgc/7DwkwHL25PiCKTr/ojtOEBm1q4X0Ni VlbB5EjES4yNlJ01aVRZcM7G0F5dWU+QJf4TYICHS0dsogHYaZRbjMa3C 5kZ1oD7yYDgTp3rWjjxOdLeOn7eODmre3S8vAkRuuZIDRLby+dVEZ9kgz w==; X-CSE-ConnectionGUID: f+43HD/0S8KNsfWcCVsiWg== X-CSE-MsgGUID: N1GuB8gsRbG3Nbe4Uc1Z4Q== X-IronPort-AV: E=Sophos;i="6.23,229,1770595200"; d="scan'208";a="19393964" 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-002.esa.us-west-2.outbound.mail-perimeter.amazon.com with ESMTP/TLS/ECDHE-RSA-AES256-GCM-SHA384; 11 May 2026 21:35:55 +0000 Received: from EX19MTAUWA002.ant.amazon.com [205.251.233.178:23093] by smtpin.naws.us-west-2.prod.farcaster.email.amazon.dev [10.0.41.42:2525] with esmtp (Farcaster) id 60461f19-6965-4e79-8cbc-caab62cd2bac; Mon, 11 May 2026 21:35:55 +0000 (UTC) X-Farcaster-Flow-ID: 60461f19-6965-4e79-8cbc-caab62cd2bac Received: from EX19D001UWA001.ant.amazon.com (10.13.138.214) by EX19MTAUWA002.ant.amazon.com (10.250.64.202) 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 21:35:52 +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 21:35:51 +0000 From: Michael Margolin To: , , CC: , , Subject: [PATCH for-next v3 0/5] Introduce Completion Counters Date: Mon, 11 May 2026 21:35:39 +0000 Message-ID: <20260511213549.594-1-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: EX19D040UWA003.ant.amazon.com (10.13.139.6) 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 v3: - 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 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 | 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