LXR linux/drivers/infiniband/ulp/opa_vnic/opa_vnic

   1#ifndef _OPA_VNIC_INTERNAL_H
   2#define _OPA_VNIC_INTERNAL_H
   3/*
   4 * Copyright(c) 2017 Intel Corporation.
   5 *
   6 * This file is provided under a dual BSD/GPLv2 license.  When using or
   7 * redistributing this file, you may do so under either license.
   8 *
   9 * GPL LICENSE SUMMARY
  10 *
  11 * This program is free software; you can redistribute it and/or modify
  12 * it under the terms of version 2 of the GNU General Public License as
  13 * published by the Free Software Foundation.
  14 *
  15 * This program is distributed in the hope that it will be useful, but
  16 * WITHOUT ANY WARRANTY; without even the implied warranty of
  17 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
  18 * General Public License for more details.
  19 *
  20 * BSD LICENSE
  21 *
  22 * Redistribution and use in source and binary forms, with or without
  23 * modification, are permitted provided that the following conditions
  24 * are met:
  25 *
  26 *  - Redistributions of source code must retain the above copyright
  27 *    notice, this list of conditions and the following disclaimer.
  28 *  - Redistributions in binary form must reproduce the above copyright
  29 *    notice, this list of conditions and the following disclaimer in
  30 *    the documentation and/or other materials provided with the
  31 *    distribution.
  32 *  - Neither the name of Intel Corporation nor the names of its
  33 *    contributors may be used to endorse or promote products derived
  34 *    from this software without specific prior written permission.
  35 *
  36 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS
  37 * "AS IS" AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT
  38 * LIMITED TO, THE IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR
  39 * A PARTICULAR PURPOSE ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT
  40 * OWNER OR CONTRIBUTORS BE LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL,
  41 * SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT
  42 * LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; LOSS OF USE,
  43 * DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND ON ANY
  44 * THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
  45 * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE
  46 * OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
  47 *
  48 */
  49
  50/*
  51 * This file contains OPA VNIC driver internal declarations
  52 */
  53
  54#include <linux/bitops.h>
  55#include <linux/etherdevice.h>
  56#include <linux/hashtable.h>
  57#include <linux/sizes.h>
  58#include <rdma/opa_vnic.h>
  59
  60#include "opa_vnic_encap.h"
  61
  62#define OPA_VNIC_VLAN_PCP(vlan_tci)  \
  63                        (((vlan_tci) & VLAN_PRIO_MASK) >> VLAN_PRIO_SHIFT)
  64
  65/* Flow to default port redirection table size */
  66#define OPA_VNIC_FLOW_TBL_SIZE    32
  67
  68/* Invalid port number */
  69#define OPA_VNIC_INVALID_PORT     0xff
  70
  71struct opa_vnic_adapter;
  72
  73/*
  74 * struct __opa_vesw_info - OPA vnic virtual switch info
  75 *
  76 * Same as opa_vesw_info without bitwise attribute.
  77 */
  78struct __opa_vesw_info {
  79        u16  fabric_id;
  80        u16  vesw_id;
  81
  82        u8   rsvd0[6];
  83        u16  def_port_mask;
  84
  85        u8   rsvd1[2];
  86        u16  pkey;
  87
  88        u8   rsvd2[4];
  89        u32  u_mcast_dlid;
  90        u32  u_ucast_dlid[OPA_VESW_MAX_NUM_DEF_PORT];
  91
  92        u32  rc;
  93
  94        u8   rsvd3[56];
  95        u16  eth_mtu;
  96        u8   rsvd4[2];
  97} __packed;
  98
  99/*
 100 * struct __opa_per_veswport_info - OPA vnic per port info
 101 *
 102 * Same as opa_per_veswport_info without bitwise attribute.
 103 */
 104struct __opa_per_veswport_info {
 105        u32  port_num;
 106
 107        u8   eth_link_status;
 108        u8   rsvd0[3];
 109
 110        u8   base_mac_addr[ETH_ALEN];
 111        u8   config_state;
 112        u8   oper_state;
 113
 114        u16  max_mac_tbl_ent;
 115        u16  max_smac_ent;
 116        u32  mac_tbl_digest;
 117        u8   rsvd1[4];
 118
 119        u32  encap_slid;
 120
 121        u8   pcp_to_sc_uc[OPA_VNIC_MAX_NUM_PCP];
 122        u8   pcp_to_vl_uc[OPA_VNIC_MAX_NUM_PCP];
 123        u8   pcp_to_sc_mc[OPA_VNIC_MAX_NUM_PCP];
 124        u8   pcp_to_vl_mc[OPA_VNIC_MAX_NUM_PCP];
 125
 126        u8   non_vlan_sc_uc;
 127        u8   non_vlan_vl_uc;
 128        u8   non_vlan_sc_mc;
 129        u8   non_vlan_vl_mc;
 130
 131        u8   rsvd2[48];
 132
 133        u16  uc_macs_gen_count;
 134        u16  mc_macs_gen_count;
 135
 136        u8   rsvd3[8];
 137} __packed;
 138
 139/*
 140 * struct __opa_veswport_info - OPA vnic port info
 141 *
 142 * Same as opa_veswport_info without bitwise attribute.
 143 */
 144struct __opa_veswport_info {
 145        struct __opa_vesw_info            vesw;
 146        struct __opa_per_veswport_info    vport;
 147};
 148
 149/*
 150 * struct __opa_veswport_trap - OPA vnic trap info
 151 *
 152 * Same as opa_veswport_trap without bitwise attribute.
 153 */
 154struct __opa_veswport_trap {
 155        u16     fabric_id;
 156        u16     veswid;
 157        u32     veswportnum;
 158        u16     opaportnum;
 159        u8      veswportindex;
 160        u8      opcode;
 161        u32     reserved;
 162} __packed;
 163
 164/**
 165 * struct opa_vnic_ctrl_port - OPA virtual NIC control port
 166 * @ibdev: pointer to ib device
 167 * @ops: opa vnic control operations
 168 * @num_ports: number of opa ports
 169 */
 170struct opa_vnic_ctrl_port {
 171        struct ib_device           *ibdev;
 172        struct opa_vnic_ctrl_ops   *ops;
 173        u8                          num_ports;
 174};
 175
 176/**
 177 * struct opa_vnic_adapter - OPA VNIC netdev private data structure
 178 * @netdev: pointer to associated netdev
 179 * @ibdev: ib device
 180 * @cport: pointer to opa vnic control port
 181 * @rn_ops: rdma netdev's net_device_ops
 182 * @port_num: OPA port number
 183 * @vport_num: vesw port number
 184 * @lock: adapter lock
 185 * @info: virtual ethernet switch port information
 186 * @vema_mac_addr: mac address configured by vema
 187 * @umac_hash: unicast maclist hash
 188 * @mmac_hash: multicast maclist hash
 189 * @mactbl: hash table of MAC entries
 190 * @mactbl_lock: mac table lock
 191 * @stats_lock: statistics lock
 192 * @flow_tbl: flow to default port redirection table
 193 * @trap_timeout: trap timeout
 194 * @trap_count: no. of traps allowed within timeout period
 195 */
 196struct opa_vnic_adapter {
 197        struct net_device             *netdev;
 198        struct ib_device              *ibdev;
 199        struct opa_vnic_ctrl_port     *cport;
 200        const struct net_device_ops   *rn_ops;
 201
 202        u8 port_num;
 203        u8 vport_num;
 204
 205        /* Lock used around concurrent updates to netdev */
 206        struct mutex lock;
 207
 208        struct __opa_veswport_info  info;
 209        u8                          vema_mac_addr[ETH_ALEN];
 210        u32                         umac_hash;
 211        u32                         mmac_hash;
 212        struct hlist_head  __rcu   *mactbl;
 213
 214        /* Lock used to protect updates to mac table */
 215        struct mutex mactbl_lock;
 216
 217        /* Lock used to protect access to vnic counters */
 218        spinlock_t stats_lock;
 219
 220        u8 flow_tbl[OPA_VNIC_FLOW_TBL_SIZE];
 221
 222        unsigned long trap_timeout;
 223        u8            trap_count;
 224};
 225
 226/* Same as opa_veswport_mactable_entry, but without bitwise attribute */
 227struct __opa_vnic_mactable_entry {
 228        u8  mac_addr[ETH_ALEN];
 229        u8  mac_addr_mask[ETH_ALEN];
 230        u32 dlid_sd;
 231} __packed;
 232
 233/**
 234 * struct opa_vnic_mac_tbl_node - OPA VNIC mac table node
 235 * @hlist: hash list handle
 236 * @index: index of entry in the mac table
 237 * @entry: entry in the table
 238 */
 239struct opa_vnic_mac_tbl_node {
 240        struct hlist_node                    hlist;
 241        u16                                  index;
 242        struct __opa_vnic_mactable_entry     entry;
 243};
 244
 245#define v_dbg(format, arg...) \
 246        netdev_dbg(adapter->netdev, format, ## arg)
 247#define v_err(format, arg...) \
 248        netdev_err(adapter->netdev, format, ## arg)
 249#define v_info(format, arg...) \
 250        netdev_info(adapter->netdev, format, ## arg)
 251#define v_warn(format, arg...) \
 252        netdev_warn(adapter->netdev, format, ## arg)
 253
 254#define c_err(format, arg...) \
 255        dev_err(&cport->ibdev->dev, format, ## arg)
 256#define c_info(format, arg...) \
 257        dev_info(&cport->ibdev->dev, format, ## arg)
 258#define c_dbg(format, arg...) \
 259        dev_dbg(&cport->ibdev->dev, format, ## arg)
 260
 261/* The maximum allowed entries in the mac table */
 262#define OPA_VNIC_MAC_TBL_MAX_ENTRIES  2048
 263/* Limit of smac entries in mac table */
 264#define OPA_VNIC_MAX_SMAC_LIMIT       256
 265
 266/* The last octet of the MAC address is used as the key to the hash table */
 267#define OPA_VNIC_MAC_HASH_IDX         5
 268
 269/* The VNIC MAC hash table is of size 2^8 */
 270#define OPA_VNIC_MAC_TBL_HASH_BITS    8
 271#define OPA_VNIC_MAC_TBL_SIZE  BIT(OPA_VNIC_MAC_TBL_HASH_BITS)
 272
 273/* VNIC HASH MACROS */
 274#define vnic_hash_init(hashtable) __hash_init(hashtable, OPA_VNIC_MAC_TBL_SIZE)
 275
 276#define vnic_hash_add(hashtable, node, key)                                   \
 277        hlist_add_head(node,                                                  \
 278                &hashtable[hash_min(key, ilog2(OPA_VNIC_MAC_TBL_SIZE))])
 279
 280#define vnic_hash_for_each_safe(name, bkt, tmp, obj, member)                  \
 281        for ((bkt) = 0, obj = NULL;                                           \
 282                    !obj && (bkt) < OPA_VNIC_MAC_TBL_SIZE; (bkt)++)           \
 283                hlist_for_each_entry_safe(obj, tmp, &name[bkt], member)
 284
 285#define vnic_hash_for_each_possible(name, obj, member, key)                   \
 286        hlist_for_each_entry(obj,                                             \
 287                &name[hash_min(key, ilog2(OPA_VNIC_MAC_TBL_SIZE))], member)
 288
 289#define vnic_hash_for_each(name, bkt, obj, member)                            \
 290        for ((bkt) = 0, obj = NULL;                                           \
 291                    !obj && (bkt) < OPA_VNIC_MAC_TBL_SIZE; (bkt)++)           \
 292                hlist_for_each_entry(obj, &name[bkt], member)
 293
 294extern char opa_vnic_driver_name[];
 295
 296struct opa_vnic_adapter *opa_vnic_add_netdev(struct ib_device *ibdev,
 297                                             u8 port_num, u8 vport_num);
 298void opa_vnic_rem_netdev(struct opa_vnic_adapter *adapter);
 299void opa_vnic_encap_skb(struct opa_vnic_adapter *adapter, struct sk_buff *skb);
 300u8 opa_vnic_get_vl(struct opa_vnic_adapter *adapter, struct sk_buff *skb);
 301u8 opa_vnic_calc_entropy(struct sk_buff *skb);
 302void opa_vnic_process_vema_config(struct opa_vnic_adapter *adapter);
 303void opa_vnic_release_mac_tbl(struct opa_vnic_adapter *adapter);
 304void opa_vnic_query_mac_tbl(struct opa_vnic_adapter *adapter,
 305                            struct opa_veswport_mactable *tbl);
 306int opa_vnic_update_mac_tbl(struct opa_vnic_adapter *adapter,
 307                            struct opa_veswport_mactable *tbl);
 308void opa_vnic_query_ucast_macs(struct opa_vnic_adapter *adapter,
 309                               struct opa_veswport_iface_macs *macs);
 310void opa_vnic_query_mcast_macs(struct opa_vnic_adapter *adapter,
 311                               struct opa_veswport_iface_macs *macs);
 312void opa_vnic_get_summary_counters(struct opa_vnic_adapter *adapter,
 313                                   struct opa_veswport_summary_counters *cntrs);
 314void opa_vnic_get_error_counters(struct opa_vnic_adapter *adapter,
 315                                 struct opa_veswport_error_counters *cntrs);
 316void opa_vnic_get_vesw_info(struct opa_vnic_adapter *adapter,
 317                            struct opa_vesw_info *info);
 318void opa_vnic_set_vesw_info(struct opa_vnic_adapter *adapter,
 319                            struct opa_vesw_info *info);
 320void opa_vnic_get_per_veswport_info(struct opa_vnic_adapter *adapter,
 321                                    struct opa_per_veswport_info *info);
 322void opa_vnic_set_per_veswport_info(struct opa_vnic_adapter *adapter,
 323                                    struct opa_per_veswport_info *info);
 324void opa_vnic_vema_report_event(struct opa_vnic_adapter *adapter, u8 event);
 325void opa_vnic_set_ethtool_ops(struct net_device *netdev);
 326void opa_vnic_vema_send_trap(struct opa_vnic_adapter *adapter,
 327                             struct __opa_veswport_trap *data, u32 lid);
 328
 329#endif /* _OPA_VNIC_INTERNAL_H */
 330