From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-10.1 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,INCLUDES_PATCH,MAILING_LIST_MULTI,SIGNED_OFF_BY, SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 71939C5B57E for ; Sun, 30 Jun 2019 16:24:13 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 3E0F820828 for ; Sun, 30 Jun 2019 16:24:13 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561911853; bh=Llw08yT9b00HV55RRDdgcrxmNSAqk/dKbBY0zBjL8P0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=ehMRI29H82Mw5WRdqoWihH+mSuLLXHfnWP9Cbd0n/by2VdsadBHh5mst0Zobccj1P 8iZPPSrVZK2EwOceHjSbYHMr2ELSKgrHcGZ6H1lwQMxy1y5YRYoUVB5OE20Mb+any7 vXaUjYkID1sm/YXOD7MWr8TGaKBdfpnPG1O5mwHY= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726835AbfF3QYM (ORCPT ); Sun, 30 Jun 2019 12:24:12 -0400 Received: from mail.kernel.org ([198.145.29.99]:52618 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726557AbfF3QYM (ORCPT ); Sun, 30 Jun 2019 12:24:12 -0400 Received: from localhost (unknown [37.142.3.125]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9269120673; Sun, 30 Jun 2019 16:24:09 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1561911850; bh=Llw08yT9b00HV55RRDdgcrxmNSAqk/dKbBY0zBjL8P0=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=sf9dreCbW97WPpjxnTwTb7BCjHuX5jZQC1luyrZDH+imbpE95g77/03uX28b2nUq+ XzLZ40pzf3ZaBWennt37OG+WLcqGqQQJrWo6FQjDWuuT6w6qtaP/1at5xEqu082nRI KWsEG9V7LCnyHosW/0yuqX1noxAokkplo7FCADG4= From: Leon Romanovsky To: Doug Ledford , Jason Gunthorpe Cc: Leon Romanovsky , RDMA mailing list , Saeed Mahameed , Yishai Hadas , linux-netdev Subject: [PATCH rdma-next v2 08/13] IB/mlx5: Introduce MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD Date: Sun, 30 Jun 2019 19:23:29 +0300 Message-Id: <20190630162334.22135-9-leon@kernel.org> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20190630162334.22135-1-leon@kernel.org> References: <20190630162334.22135-1-leon@kernel.org> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit Sender: netdev-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: netdev@vger.kernel.org From: Yishai Hadas Introduce MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD and its initial implementation. This object is from type class FD and will be used to read DEVX async events. Signed-off-by: Yishai Hadas Signed-off-by: Leon Romanovsky --- drivers/infiniband/hw/mlx5/devx.c | 95 +++++++++++++++++++++++ include/uapi/rdma/mlx5_user_ioctl_cmds.h | 10 +++ include/uapi/rdma/mlx5_user_ioctl_verbs.h | 4 + 3 files changed, 109 insertions(+) diff --git a/drivers/infiniband/hw/mlx5/devx.c b/drivers/infiniband/hw/mlx5/devx.c index 80b42d069328..89947b4f4f6f 100644 --- a/drivers/infiniband/hw/mlx5/devx.c +++ b/drivers/infiniband/hw/mlx5/devx.c @@ -33,6 +33,17 @@ struct devx_async_data { struct mlx5_ib_uapi_devx_async_cmd_hdr hdr; }; +struct devx_async_event_file { + struct ib_uobject uobj; + /* Head of events that are subscribed to this FD */ + struct list_head subscribed_events_list; + spinlock_t lock; + wait_queue_head_t poll_wait; + struct list_head event_list; + struct mlx5_ib_dev *dev; + u8 omit_data:1; +}; + #define MLX5_MAX_DESTROY_INBOX_SIZE_DW MLX5_ST_SZ_DW(delete_fte_in) struct devx_obj { struct mlx5_core_dev *mdev; @@ -1375,6 +1386,37 @@ static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC)( return 0; } +static int UVERBS_HANDLER(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC)( + struct uverbs_attr_bundle *attrs) +{ + struct ib_uobject *uobj = uverbs_attr_get_uobject( + attrs, MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE); + struct devx_async_event_file *ev_file; + struct mlx5_ib_ucontext *c = rdma_udata_to_drv_context( + &attrs->driver_udata, struct mlx5_ib_ucontext, ibucontext); + struct mlx5_ib_dev *dev = to_mdev(c->ibucontext.device); + u32 flags; + int err; + + err = uverbs_get_flags32(&flags, attrs, + MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS, + MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA); + + if (err) + return err; + + ev_file = container_of(uobj, struct devx_async_event_file, + uobj); + spin_lock_init(&ev_file->lock); + INIT_LIST_HEAD(&ev_file->event_list); + init_waitqueue_head(&ev_file->poll_wait); + if (flags & MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA) + ev_file->omit_data = 1; + INIT_LIST_HEAD(&ev_file->subscribed_events_list); + ev_file->dev = dev; + return 0; +} + static void devx_query_callback(int status, struct mlx5_async_work *context) { struct devx_async_data *async_data = @@ -1729,6 +1771,32 @@ static const struct file_operations devx_async_cmd_event_fops = { .llseek = no_llseek, }; +static ssize_t devx_async_event_read(struct file *filp, char __user *buf, + size_t count, loff_t *pos) +{ + return -EINVAL; +} + +static __poll_t devx_async_event_poll(struct file *filp, + struct poll_table_struct *wait) +{ + return 0; +} + +static int devx_async_event_close(struct inode *inode, struct file *filp) +{ + uverbs_close_fd(filp); + return 0; +} + +static const struct file_operations devx_async_event_fops = { + .owner = THIS_MODULE, + .read = devx_async_event_read, + .poll = devx_async_event_poll, + .release = devx_async_event_close, + .llseek = no_llseek, +}; + static int devx_hot_unplug_async_cmd_event_file(struct ib_uobject *uobj, enum rdma_remove_reason why) { @@ -1748,6 +1816,12 @@ static int devx_hot_unplug_async_cmd_event_file(struct ib_uobject *uobj, return 0; }; +static int devx_hot_unplug_async_event_file(struct ib_uobject *uobj, + enum rdma_remove_reason why) +{ + return 0; +}; + DECLARE_UVERBS_NAMED_METHOD( MLX5_IB_METHOD_DEVX_UMEM_REG, UVERBS_ATTR_IDR(MLX5_IB_ATTR_DEVX_UMEM_REG_HANDLE, @@ -1913,6 +1987,24 @@ DECLARE_UVERBS_NAMED_OBJECT( O_RDONLY), &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC)); +DECLARE_UVERBS_NAMED_METHOD( + MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC, + UVERBS_ATTR_FD(MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE, + MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, + UVERBS_ACCESS_NEW, + UA_MANDATORY), + UVERBS_ATTR_FLAGS_IN(MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS, + enum mlx5_ib_uapi_devx_create_event_channel_flags, + UA_MANDATORY)); + +DECLARE_UVERBS_NAMED_OBJECT( + MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, + UVERBS_TYPE_ALLOC_FD(sizeof(struct devx_async_event_file), + devx_hot_unplug_async_event_file, + &devx_async_event_fops, "[devx_async_event]", + O_RDONLY), + &UVERBS_METHOD(MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC)); + static bool devx_is_supported(struct ib_device *device) { struct mlx5_ib_dev *dev = to_mdev(device); @@ -1933,5 +2025,8 @@ const struct uapi_definition mlx5_ib_devx_defs[] = { UAPI_DEF_CHAIN_OBJ_TREE_NAMED( MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), + UAPI_DEF_CHAIN_OBJ_TREE_NAMED( + MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, + UAPI_DEF_IS_OBJ_SUPPORTED(devx_is_supported)), {}, }; diff --git a/include/uapi/rdma/mlx5_user_ioctl_cmds.h b/include/uapi/rdma/mlx5_user_ioctl_cmds.h index d404c951954c..6ad8f4f11ddd 100644 --- a/include/uapi/rdma/mlx5_user_ioctl_cmds.h +++ b/include/uapi/rdma/mlx5_user_ioctl_cmds.h @@ -127,16 +127,26 @@ enum mlx5_ib_devx_async_cmd_fd_alloc_attrs { MLX5_IB_ATTR_DEVX_ASYNC_CMD_FD_ALLOC_HANDLE = (1U << UVERBS_ID_NS_SHIFT), }; +enum mlx5_ib_devx_async_event_fd_alloc_attrs { + MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_HANDLE = (1U << UVERBS_ID_NS_SHIFT), + MLX5_IB_ATTR_DEVX_ASYNC_EVENT_FD_ALLOC_FLAGS, +}; + enum mlx5_ib_devx_async_cmd_fd_methods { MLX5_IB_METHOD_DEVX_ASYNC_CMD_FD_ALLOC = (1U << UVERBS_ID_NS_SHIFT), }; +enum mlx5_ib_devx_async_event_fd_methods { + MLX5_IB_METHOD_DEVX_ASYNC_EVENT_FD_ALLOC = (1U << UVERBS_ID_NS_SHIFT), +}; + enum mlx5_ib_objects { MLX5_IB_OBJECT_DEVX = (1U << UVERBS_ID_NS_SHIFT), MLX5_IB_OBJECT_DEVX_OBJ, MLX5_IB_OBJECT_DEVX_UMEM, MLX5_IB_OBJECT_FLOW_MATCHER, MLX5_IB_OBJECT_DEVX_ASYNC_CMD_FD, + MLX5_IB_OBJECT_DEVX_ASYNC_EVENT_FD, }; enum mlx5_ib_flow_matcher_create_attrs { diff --git a/include/uapi/rdma/mlx5_user_ioctl_verbs.h b/include/uapi/rdma/mlx5_user_ioctl_verbs.h index a8f34c237458..b44691315d39 100644 --- a/include/uapi/rdma/mlx5_user_ioctl_verbs.h +++ b/include/uapi/rdma/mlx5_user_ioctl_verbs.h @@ -63,5 +63,9 @@ enum mlx5_ib_uapi_dm_type { MLX5_IB_UAPI_DM_TYPE_HEADER_MODIFY_SW_ICM, }; +enum mlx5_ib_uapi_devx_create_event_channel_flags { + MLX5_IB_UAPI_DEVX_CR_EV_CH_FLAGS_OMIT_DATA = 1 << 0, +}; + #endif -- 2.20.1