From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from linux.microsoft.com (linux.microsoft.com [13.77.154.182]) by smtp.subspace.kernel.org (Postfix) with ESMTP id 5550B3254B2; Sat, 7 Mar 2026 01:47:33 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=13.77.154.182 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772848054; cv=none; b=WZrbRfHAq0LkMLeZ12mqMMWRJEolX/0RuuWy40q368ewtC1HcHNslOtKAwPj6XxbRLmjIQW/9pwbn0iRFnxIdEwdE658bx3151IDGXGi5rdzUa+wI0d1xIeb8w0g/bNkvo8O0kR8ad/xUpJ8jzCV5mwdorpxTCg6j9UCSFZKjNA= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1772848054; c=relaxed/simple; bh=G5JUmQnoDfSaDwdB0ooqXdCrFcaPKNLXU+xVMpdoZEw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=CayPe1Faiq6o8cyFeZrojmEx5UTpXfrSrW8U2NggaiYp5zU1/GRn9fH0RkOQV9NQoIoDgXVusuXji+HRq8yPfEV6bqaZ4E2132eDf2ov2m+Pu35EE6ps+JUYNe60/2IGXW423R3Z+UrCVNywOWwW9SK+ZunDsC9H+luwMPcSf10= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microsoft.com; spf=pass smtp.mailfrom=linux.microsoft.com; arc=none smtp.client-ip=13.77.154.182 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microsoft.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=linux.microsoft.com Received: by linux.microsoft.com (Postfix, from userid 1202) id 526C620B6F02; Fri, 6 Mar 2026 17:47:33 -0800 (PST) DKIM-Filter: OpenDKIM Filter v2.11.0 linux.microsoft.com 526C620B6F02 From: Long Li To: Long Li , Konstantin Taranov , Jakub Kicinski , "David S . Miller" , Paolo Abeni , Eric Dumazet , Andrew Lunn , Jason Gunthorpe , Leon Romanovsky , Haiyang Zhang , "K . Y . Srinivasan" , Wei Liu , Dexuan Cui Cc: Simon Horman , netdev@vger.kernel.org, linux-rdma@vger.kernel.org, linux-hyperv@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH rdma-next 1/8] RDMA/mana_ib: Track ucontext per device Date: Fri, 6 Mar 2026 17:47:15 -0800 Message-ID: <20260307014723.556523-2-longli@microsoft.com> X-Mailer: git-send-email 2.43.7 In-Reply-To: <20260307014723.556523-1-longli@microsoft.com> References: <20260307014723.556523-1-longli@microsoft.com> Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Add per-device tracking of ucontext objects. Each ucontext is added to the device's ucontext_list on allocation and removed on deallocation. A mutex protects the list and a per-ucontext lock protects resource lists that will be added in subsequent patches. This enables iterating over all active ucontexts during service reset cleanup. Signed-off-by: Long Li --- drivers/infiniband/hw/mana/device.c | 2 ++ drivers/infiniband/hw/mana/main.c | 10 ++++++++++ drivers/infiniband/hw/mana/mana_ib.h | 6 ++++++ 3 files changed, 18 insertions(+) diff --git a/drivers/infiniband/hw/mana/device.c b/drivers/infiniband/hw/mana/device.c index ccc2279ca63c..149e8d4d5b8e 100644 --- a/drivers/infiniband/hw/mana/device.c +++ b/drivers/infiniband/hw/mana/device.c @@ -132,6 +132,8 @@ static int mana_ib_probe(struct auxiliary_device *adev, dev->ib_dev.dev.parent = gc->dev; dev->gdma_dev = mdev; xa_init_flags(&dev->qp_table_wq, XA_FLAGS_LOCK_IRQ); + mutex_init(&dev->ucontext_lock); + INIT_LIST_HEAD(&dev->ucontext_list); if (mana_ib_is_rnic(dev)) { dev->ib_dev.phys_port_cnt = 1; diff --git a/drivers/infiniband/hw/mana/main.c b/drivers/infiniband/hw/mana/main.c index 8d99cd00f002..fc28bdafcfd6 100644 --- a/drivers/infiniband/hw/mana/main.c +++ b/drivers/infiniband/hw/mana/main.c @@ -221,6 +221,12 @@ int mana_ib_alloc_ucontext(struct ib_ucontext *ibcontext, ucontext->doorbell = doorbell_page; + mutex_init(&ucontext->lock); + + mutex_lock(&mdev->ucontext_lock); + list_add_tail(&ucontext->dev_list, &mdev->ucontext_list); + mutex_unlock(&mdev->ucontext_lock); + return 0; } @@ -236,6 +242,10 @@ void mana_ib_dealloc_ucontext(struct ib_ucontext *ibcontext) mdev = container_of(ibdev, struct mana_ib_dev, ib_dev); gc = mdev_to_gc(mdev); + mutex_lock(&mdev->ucontext_lock); + list_del_init(&mana_ucontext->dev_list); + mutex_unlock(&mdev->ucontext_lock); + ret = mana_gd_destroy_doorbell_page(gc, mana_ucontext->doorbell); if (ret) ibdev_dbg(ibdev, "Failed to destroy doorbell page %d\n", ret); diff --git a/drivers/infiniband/hw/mana/mana_ib.h b/drivers/infiniband/hw/mana/mana_ib.h index a7c8c0fd7019..c7e333d3e9d8 100644 --- a/drivers/infiniband/hw/mana/mana_ib.h +++ b/drivers/infiniband/hw/mana/mana_ib.h @@ -83,6 +83,9 @@ struct mana_ib_dev { struct dma_pool *av_pool; netdevice_tracker dev_tracker; struct notifier_block nb; + /* Protects ucontext_list */ + struct mutex ucontext_lock; + struct list_head ucontext_list; }; struct mana_ib_wq { @@ -197,6 +200,9 @@ struct mana_ib_qp { struct mana_ib_ucontext { struct ib_ucontext ibucontext; u32 doorbell; + struct list_head dev_list; + /* Protects resource lists below */ + struct mutex lock; }; struct mana_ib_rwq_ind_table { -- 2.43.0