drivers/infiniband/ulp/opa_vnic/opa_vnic_internal.h

   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
  71 struct 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  */
  78 struct __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  */
 104 struct __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  */
 144 struct __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  */
 154 struct __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  */
 170 struct 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  */
 196 struct 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 */
 227 struct __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  */
 239 struct 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
 294 extern char opa_vnic_driver_name[];
 295
 296 struct opa_vnic_adapter *opa_vnic_add_netdev(struct ib_device *ibdev,
 297                                              u8 port_num, u8 vport_num);
 298 void opa_vnic_rem_netdev(struct opa_vnic_adapter *adapter);
 299 void opa_vnic_encap_skb(struct opa_vnic_adapter *adapter, struct sk_buff *skb);
 300 u8 opa_vnic_get_vl(struct opa_vnic_adapter *adapter, struct sk_buff *skb);
 301 u8 opa_vnic_calc_entropy(struct sk_buff *skb);
 302 void opa_vnic_process_vema_config(struct opa_vnic_adapter *adapter);
 303 void opa_vnic_release_mac_tbl(struct opa_vnic_adapter *adapter);
 304 void opa_vnic_query_mac_tbl(struct opa_vnic_adapter *adapter,
 305                             struct opa_veswport_mactable *tbl);
 306 int opa_vnic_update_mac_tbl(struct opa_vnic_adapter *adapter,
 307                             struct opa_veswport_mactable *tbl);
 308 void opa_vnic_query_ucast_macs(struct opa_vnic_adapter *adapter,
 309                                struct opa_veswport_iface_macs *macs);
 310 void opa_vnic_query_mcast_macs(struct opa_vnic_adapter *adapter,
 311                                struct opa_veswport_iface_macs *macs);
 312 void opa_vnic_get_summary_counters(struct opa_vnic_adapter *adapter,
 313                                    struct opa_veswport_summary_counters *cntrs);
 314 void opa_vnic_get_error_counters(struct opa_vnic_adapter *adapter,
 315                                  struct opa_veswport_error_counters *cntrs);
 316 void opa_vnic_get_vesw_info(struct opa_vnic_adapter *adapter,
 317                             struct opa_vesw_info *info);
 318 void opa_vnic_set_vesw_info(struct opa_vnic_adapter *adapter,
 319                             struct opa_vesw_info *info);
 320 void opa_vnic_get_per_veswport_info(struct opa_vnic_adapter *adapter,
 321                                     struct opa_per_veswport_info *info);
 322 void opa_vnic_set_per_veswport_info(struct opa_vnic_adapter *adapter,
 323                                     struct opa_per_veswport_info *info);
 324 void opa_vnic_vema_report_event(struct opa_vnic_adapter *adapter, u8 event);
 325 void opa_vnic_set_ethtool_ops(struct net_device *netdev);
 326 void 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 */