[RFC,v3,02/11] IB/hfi-vnic: Virtual Network Interface Controller (VNIC) interface

Message ID	1486498990-76562-3-git-send-email-niranjana.vishwanathapura@intel.com (mailing list archive)
State	Superseded
Headers	show Return-Path: <linux-rdma-owner@kernel.org> From: "Vishwanathapura, Niranjana" <niranjana.vishwanathapura@intel.com> To: dledford@redhat.com Cc: linux-rdma@vger.kernel.org, netdev@vger.kernel.org, dennis.dalessandro@intel.com, ira.weiny@intel.com, Niranjana Vishwanathapura <niranjana.vishwanathapura@intel.com> Subject: [RFC v3 02/11] IB/hfi-vnic: Virtual Network Interface Controller (VNIC) interface Date: Tue, 7 Feb 2017 12:23:01 -0800 Message-Id: <1486498990-76562-3-git-send-email-niranjana.vishwanathapura@intel.com> In-Reply-To: <1486498990-76562-1-git-send-email-niranjana.vishwanathapura@intel.com> References: <1486498990-76562-1-git-send-email-niranjana.vishwanathapura@intel.com> Sender: linux-rdma-owner@vger.kernel.org Precedence: bulk

diff --git a/include/rdma/ib_verbs.h b/include/rdma/ib_verbs.h index b1ac973..b9897d9d 100644 --- a/include/rdma/ib_verbs.h +++ b/include/rdma/ib_verbs.h @@ -55,6 +55,7 @@ #include <net/ip.h> #include <linux/string.h> #include <linux/slab.h> +#include <linux/netdevice.h> #include <linux/if_link.h> #include <linux/atomic.h> @@ -221,6 +222,7 @@ enum ib_device_cap_flags { IB_DEVICE_SG_GAPS_REG = (1ULL << 32), IB_DEVICE_VIRTUAL_FUNCTION = (1ULL << 33), IB_DEVICE_RAW_SCATTER_FCS = (1ULL << 34), + IB_DEVICE_RDMA_NETDEV_HFI_VNIC = (1ULL << 35), }; enum ib_signature_prot_cap { @@ -1844,6 +1846,22 @@ struct ib_port_immutable { u32 max_mad_size; }; +/* rdma netdev type - specifies protocol type */ +enum rdma_netdev_t { + RDMA_NETDEV_HFI_VNIC +}; + +/** + * 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); +}; + struct ib_device { struct device *dma_device; @@ -2096,6 +2114,15 @@ 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 ib_dma_mapping_ops *dma_ops; struct module *owner; diff --git a/include/rdma/opa_hfi.h b/include/rdma/opa_hfi.h new file mode 100644 index 0000000..f357d04 --- /dev/null +++ b/include/rdma/opa_hfi.h @@ -0,0 +1,147 @@ +#ifndef _OPA_HFI_H +#define _OPA_HFI_H +/* + * Copyright(c) 2017 Intel Corporation. + * + * This file is provided under a dual BSD/GPLv2 license. When using or + * redistributing this file, you may do so under either license. + * + * GPL LICENSE SUMMARY + * + * This program is free software; you can redistribute it and/or modify + * it under the terms of version 2 of the GNU General Public License as + * published by the Free Software Foundation. + * + * This program is distributed in the hope that it will be useful, but + * WITHOUT ANY WARRANTY; without even the implied warranty of + * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU + * General Public License for more details. + * + * BSD LICENSE + * + * Redistribution and use in source and binary forms, with or without + * modification, are permitted provided that the following conditions + * are met: + * + * - Redistributions of source code must retain the above copyright + * notice, this list of conditions and the following disclaimer. + * - Redistributions in binary form must reproduce the above copyright + * notice, this list of conditions and the following disclaimer in + * the documentation and/or other materials provided with the + * distribution. + * - Neither the name of Intel Corporation nor the names of its + * contributors may be used to endorse or promote products derived + * from this software without specific prior written permission. + * + * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS + * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT + * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR + * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT + * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, + * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT + * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, + * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY + * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT + * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE + * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. + * + */ + +/* + * This file contains Intel Omni-Path (OPA) Host Fabric Interface (HFI) + * specific declarations. + */ + +#include <rdma/ib_verbs.h> + +#define HFI_MAX_NUM_VNICS 255 + +/* VNIC uses 16B header format */ +#define HFI_VNIC_L2_TYPE 0x2 + +/* 16 header bytes + 2 reserved bytes */ +#define HFI_VNIC_L2_HDR_LEN (16 + 2) + +#define HFI_VNIC_L4_HDR_LEN 2 + +#define HFI_VNIC_HDR_LEN (HFI_VNIC_L2_HDR_LEN + \ + HFI_VNIC_L4_HDR_LEN) + +#define HFI_VNIC_L4_ETHR 0x78 + +#define HFI_VNIC_ICRC_LEN 4 +#define HFI_VNIC_TAIL_LEN 1 +#define HFI_VNIC_ICRC_TAIL_LEN (HFI_VNIC_ICRC_LEN + HFI_VNIC_TAIL_LEN) + +/* VNIC configured and operational state values */ +#define HFI_VNIC_STATE_DROP_ALL 0x1 +#define HFI_VNIC_STATE_FORWARDING 0x3 + +#define HFI_VNIC_SKB_MDATA_LEN 4 +#define HFI_VNIC_SKB_MDATA_ENCAP_ERR 0x1 + +/* hfi vnic rdma netdev's private data structure */ +struct hfi_vnic_rdma_netdev { + struct rdma_netdev rn; /* keep this first */ + /* followed by device private data */ + char *dev_priv[0]; +}; + +static inline void *hfi_vnic_priv(const struct net_device *dev) +{ + struct rdma_netdev *rn = netdev_priv(dev); + + return rn->clnt_priv; +} + +static inline void *hfi_vnic_dev_priv(const struct net_device *dev) +{ + struct rdma_netdev *rn = netdev_priv(dev); + + return rn + 1; +} + +/* hfi_vnic skb meta data structrue */ +struct hfi_vnic_skb_mdata { + u8 vl; + u8 entropy; + u8 flags; + u8 rsvd; +} __packed; + +/* HFI VNIC group statistics */ +struct hfi_vnic_grp_stats { + u64 unicast; + u64 mcastbcast; + u64 untagged; + u64 vlan; + u64 s_64; + u64 s_65_127; + u64 s_128_255; + u64 s_256_511; + u64 s_512_1023; + u64 s_1024_1518; + u64 s_1519_max; +}; + +struct hfi_vnic_stats { + /* standard netdev statistics */ + struct rtnl_link_stats64 netstats; + + /* HFI VNIC statistics */ + struct hfi_vnic_grp_stats tx_grp; + struct hfi_vnic_grp_stats rx_grp; + u64 tx_dlid_zero; + u64 tx_drop_state; + u64 rx_drop_state; + u64 rx_runt; + u64 rx_oversize; +}; + +static inline bool rdma_cap_hfi_vnic(struct ib_device *device) +{ + return !!(device->attrs.device_cap_flags & + IB_DEVICE_RDMA_NETDEV_HFI_VNIC); +} + +#endif /* _OPA_HFI_H */

[RFC,v3,02/11] IB/hfi-vnic: Virtual Network Interface Controller (VNIC) interface

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