From patchwork Tue Apr 4 19:17:27 2017 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Leon Romanovsky X-Patchwork-Id: 9662467 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id 780AB6032D for ; Tue, 4 Apr 2017 19:17:28 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 6B5451FF27 for ; Tue, 4 Apr 2017 19:17:28 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 5F5EA20881; Tue, 4 Apr 2017 19:17:28 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=ham version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id ED2F01FF27 for ; Tue, 4 Apr 2017 19:17:27 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1754136AbdDDTR1 (ORCPT ); Tue, 4 Apr 2017 15:17:27 -0400 Received: from mail.kernel.org ([198.145.29.136]:51118 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753511AbdDDTR0 (ORCPT ); Tue, 4 Apr 2017 15:17:26 -0400 Received: from mail.kernel.org (localhost [127.0.0.1]) by mail.kernel.org (Postfix) with ESMTP id 130A1200D0; Tue, 4 Apr 2017 19:17:25 +0000 (UTC) Received: from localhost (unknown [213.57.247.46]) (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 F28B0201BC; Tue, 4 Apr 2017 19:17:22 +0000 (UTC) From: Leon Romanovsky To: Doug Ledford Cc: linux-rdma@vger.kernel.org, Niranjana Vishwanathapura , Alex Vesker , Erez Shitrit Subject: [PATCH rdma-next 1/6] IB/IPoIB: Introduce RDMA netdev interface and IPoIB structs Date: Tue, 4 Apr 2017 22:17:27 +0300 Message-Id: <20170404191732.31895-2-leon@kernel.org> X-Mailer: git-send-email 2.12.0 In-Reply-To: <20170404191732.31895-1-leon@kernel.org> References: <20170404191732.31895-1-leon@kernel.org> X-Virus-Scanned: ClamAV using ClamSMTP Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-rdma@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Add RDMA netdev interface to ib device structure allowing RDMA netdev devices to be allocated by ib clients. The idea is to allow to providers to optimize IPoIB data path. New struct that includes functions and data member is exposed. It exposes set of callback functions for handling data path flows in IPoIB driver. Each provider can support these set of functions in order to optimize its specific data path, and let IPoIB to leverage its data path. There is an assumption, that providers should give the full set of functions and not only part of them, in order to work properly. Signed-off-by: Niranjana Vishwanathapura Signed-off-by: Erez Shitrit Signed-off-by: Leon Romanovsky --- include/rdma/ib_verbs.h | 41 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 41 insertions(+) diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index 0f1813c13687..d3b104a96b58 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -55,6 +55,7 @@ #include #include #include +#include #include #include @@ -1862,7 +1863,38 @@ struct ib_port_immutable { u32 max_mad_size; }; +/* rdma netdev type - specifies protocol type */ +enum rdma_netdev_t { + RDMA_NETDEV_IPOIB, +}; + +/* + * struct rdma_netdev - rdma netdev + * For cases where netstack interfacing is required. + */ +struct rdma_netdev { + void *clnt_priv; + + /* control functions */ + void (*set_id)(struct net_device *netdev, int id); + /* send packet */ + int (*send)(struct net_device *dev, struct sk_buff *skb, + struct ib_ah *address, u32 dqpn); + /* multicast */ + int (*attach_mcast)(struct net_device *dev, struct ib_device *hca, + union ib_gid *gid, u16 mlid, + int set_qkey, u32 qkey); + int (*detach_mcast)(struct net_device *dev, struct ib_device *hca, + union ib_gid *gid, u16 mlid); + + /* rdma-netdev private members */ + struct ib_device *hca; +}; + struct ib_device { + /* Do not access @dma_device directly from ULP nor from HW drivers. */ + struct device *dma_device; + char name[IB_DEVICE_NAME_MAX]; struct list_head event_handler_list; @@ -2112,6 +2144,15 @@ struct ib_device { struct ib_rwq_ind_table_init_attr *init_attr, struct ib_udata *udata); int (*destroy_rwq_ind_table)(struct ib_rwq_ind_table *wq_ind_table); + /* rdma netdev operations */ + struct net_device *(*alloc_rdma_netdev)( + struct ib_device *device, + u8 port_num, + enum rdma_netdev_t type, + const char *name, + unsigned char name_assign_type, + void (*setup)(struct net_device *)); + void (*free_rdma_netdev)(struct net_device *netdev); struct module *owner; struct device dev;