From patchwork Fri Dec 21 14:40:16 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Yuval Shaia X-Patchwork-Id: 1017550 Return-Path: X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=pass (mailfrom) smtp.mailfrom=nongnu.org (client-ip=2001:4830:134:3::11; helo=lists.gnu.org; envelope-from=qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org; receiver=) Authentication-Results: ozlabs.org; dmarc=fail (p=none dis=none) header.from=oracle.com Authentication-Results: ozlabs.org; dkim=fail reason="signature verification failed" (2048-bit key; unprotected) header.d=oracle.com header.i=@oracle.com header.b="hCT9OVTP"; dkim-atps=neutral Received: from lists.gnu.org (lists.gnu.org [IPv6:2001:4830:134:3::11]) (using TLSv1 with cipher DHE-RSA-AES256-SHA (256/256 bits)) (No client certificate requested) by ozlabs.org (Postfix) with ESMTPS id 43Lrtc4KChz9sCr for ; Sat, 22 Dec 2018 01:42:00 +1100 (AEDT) Received: from localhost ([::1]:46048 helo=lists.gnu.org) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gaLzy-0000KX-9b for incoming@patchwork.ozlabs.org; Fri, 21 Dec 2018 09:41:58 -0500 Received: from eggs.gnu.org ([2001:4830:134:3::10]:55303) by lists.gnu.org with esmtp (Exim 4.71) (envelope-from ) id 1gaLz9-0000Gn-JH for qemu-devel@nongnu.org; Fri, 21 Dec 2018 09:41:10 -0500 Received: from Debian-exim by eggs.gnu.org with spam-scanned (Exim 4.71) (envelope-from ) id 1gaLz4-0008Un-4K for qemu-devel@nongnu.org; Fri, 21 Dec 2018 09:41:07 -0500 Received: from aserp2130.oracle.com ([141.146.126.79]:58772) by eggs.gnu.org with esmtps (TLS1.0:RSA_AES_256_CBC_SHA1:32) (Exim 4.71) (envelope-from ) id 1gaLz3-0008U8-QM for qemu-devel@nongnu.org; Fri, 21 Dec 2018 09:41:02 -0500 Received: from pps.filterd (aserp2130.oracle.com [127.0.0.1]) by aserp2130.oracle.com (8.16.0.22/8.16.0.22) with SMTP id wBLEYA6q073102; Fri, 21 Dec 2018 14:41:00 GMT DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=oracle.com; h=from : to : subject : date : message-id : in-reply-to : references; s=corp-2018-07-02; bh=alwWU6gNwr0kHeqiYfaHXj7SlqfLYrB8DJ+fgx2smJg=; b=hCT9OVTPVo6TRjpOsqUDCRN08aXyxuRM2mXa0v2MWEdShn1PzE2HtiBK+Em4/fntecYp zfMUhSBbDfoKIriKvSzdsrDRi/2e24PbS/yaLHCvyjbTdkEDD8HcsiAoguWyiBisskXs ZrBIbvj27RLW2hbQvUVC2g9Gr1REOj6PmfQRn8atUz0zLawQIPZIg8imQFoaiAQbErrZ teoBJWFp6D53YfZ+5e3rvncu49kwZ0scixQxW14wFId8FQlnt9gnl76bn8WQJuH5/6HU vK3Y9DKb89gEx05PpwOU7YrHs9oc3t+5ejYHTJUk4CrIjQjPYSRhXSLiekCBJ01J0ZAq uQ== Received: from userv0022.oracle.com (userv0022.oracle.com [156.151.31.74]) by aserp2130.oracle.com with ESMTP id 2pf8gfpg0s-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 21 Dec 2018 14:41:00 +0000 Received: from userv0121.oracle.com (userv0121.oracle.com [156.151.31.72]) by userv0022.oracle.com (8.14.4/8.14.4) with ESMTP id wBLEesf5025218 (version=TLSv1/SSLv3 cipher=DHE-RSA-AES256-GCM-SHA384 bits=256 verify=OK); Fri, 21 Dec 2018 14:40:54 GMT Received: from abhmp0015.oracle.com (abhmp0015.oracle.com [141.146.116.21]) by userv0121.oracle.com (8.14.4/8.13.8) with ESMTP id wBLEerIK026437; Fri, 21 Dec 2018 14:40:53 GMT Received: from localhost.localdomain (/77.138.186.148) by default (Oracle Beehive Gateway v4.0) with ESMTP ; Fri, 21 Dec 2018 06:40:53 -0800 From: Yuval Shaia To: yuval.shaia@oracle.com, marcel.apfelbaum@gmail.com, dmitry.fleytman@gmail.com, jasowang@redhat.com, eblake@redhat.com, armbru@redhat.com, pbonzini@redhat.com, qemu-devel@nongnu.org, shamir.rabinovitch@oracle.com, cohuck@redhat.com Date: Fri, 21 Dec 2018 16:40:16 +0200 Message-Id: <20181221144037.10290-3-yuval.shaia@oracle.com> X-Mailer: git-send-email 2.17.2 In-Reply-To: <20181221144037.10290-1-yuval.shaia@oracle.com> References: <20181221144037.10290-1-yuval.shaia@oracle.com> X-Proofpoint-Virus-Version: vendor=nai engine=5900 definitions=9113 signatures=668680 X-Proofpoint-Spam-Details: rule=notspam policy=default score=0 suspectscore=0 malwarescore=0 phishscore=0 bulkscore=0 spamscore=0 mlxscore=0 mlxlogscore=584 adultscore=0 classifier=spam adjust=0 reason=mlx scancount=1 engine=8.0.1-1810050000 definitions=main-1812210115 X-detected-operating-system: by eggs.gnu.org: GNU/Linux 3.x [generic] [fuzzy] X-Received-From: 141.146.126.79 Subject: [Qemu-devel] [PATCH v9 02/23] hw/rdma: Add ability to force notification without re-arm X-BeenThere: qemu-devel@nongnu.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: qemu-devel-bounces+incoming=patchwork.ozlabs.org@nongnu.org Sender: "Qemu-devel" Upon completion of incoming packet the device pushes CQE to driver's RX ring and notify the driver (msix). While for data-path incoming packets the driver needs the ability to control whether it wished to receive interrupts or not, for control-path packets such as incoming MAD the driver needs to be notified anyway, it even do not need to re-arm the notification bit. Enhance the notification field to support this. Signed-off-by: Yuval Shaia Reviewed-by: Marcel Apfelbaum --- hw/rdma/rdma_rm.c | 12 ++++++++++-- hw/rdma/rdma_rm_defs.h | 8 +++++++- hw/rdma/vmw/pvrdma_qp_ops.c | 6 ++++-- 3 files changed, 21 insertions(+), 5 deletions(-) diff --git a/hw/rdma/rdma_rm.c b/hw/rdma/rdma_rm.c index 8d59a42cd1..4f10fcabcc 100644 --- a/hw/rdma/rdma_rm.c +++ b/hw/rdma/rdma_rm.c @@ -263,7 +263,7 @@ int rdma_rm_alloc_cq(RdmaDeviceResources *dev_res, RdmaBackendDev *backend_dev, } cq->opaque = opaque; - cq->notify = false; + cq->notify = CNT_CLEAR; rc = rdma_backend_create_cq(backend_dev, &cq->backend_cq, cqe); if (rc) { @@ -291,7 +291,10 @@ void rdma_rm_req_notify_cq(RdmaDeviceResources *dev_res, uint32_t cq_handle, return; } - cq->notify = notify; + if (cq->notify != CNT_SET) { + cq->notify = notify ? CNT_ARM : CNT_CLEAR; + } + pr_dbg("notify=%d\n", cq->notify); } @@ -349,6 +352,11 @@ int rdma_rm_alloc_qp(RdmaDeviceResources *dev_res, uint32_t pd_handle, return -EINVAL; } + if (qp_type == IBV_QPT_GSI) { + scq->notify = CNT_SET; + rcq->notify = CNT_SET; + } + qp = res_tbl_alloc(&dev_res->qp_tbl, &rm_qpn); if (!qp) { return -ENOMEM; diff --git a/hw/rdma/rdma_rm_defs.h b/hw/rdma/rdma_rm_defs.h index 7228151239..9b399063d3 100644 --- a/hw/rdma/rdma_rm_defs.h +++ b/hw/rdma/rdma_rm_defs.h @@ -49,10 +49,16 @@ typedef struct RdmaRmPD { uint32_t ctx_handle; } RdmaRmPD; +typedef enum CQNotificationType { + CNT_CLEAR, + CNT_ARM, + CNT_SET, +} CQNotificationType; + typedef struct RdmaRmCQ { RdmaBackendCQ backend_cq; void *opaque; - bool notify; + CQNotificationType notify; } RdmaRmCQ; /* MR (DMA region) */ diff --git a/hw/rdma/vmw/pvrdma_qp_ops.c b/hw/rdma/vmw/pvrdma_qp_ops.c index c668afd0ed..762700a205 100644 --- a/hw/rdma/vmw/pvrdma_qp_ops.c +++ b/hw/rdma/vmw/pvrdma_qp_ops.c @@ -89,8 +89,10 @@ static int pvrdma_post_cqe(PVRDMADev *dev, uint32_t cq_handle, pvrdma_ring_write_inc(&dev->dsr_info.cq); pr_dbg("cq->notify=%d\n", cq->notify); - if (cq->notify) { - cq->notify = false; + if (cq->notify != CNT_CLEAR) { + if (cq->notify == CNT_ARM) { + cq->notify = CNT_CLEAR; + } post_interrupt(dev, INTR_VEC_CMD_COMPLETION_Q); }