net/ncsi/internal.h

   1 /*
   2  * Copyright Gavin Shan, IBM Corporation 2016.
   3  *
   4  * This program is free software; you can redistribute it and/or modify
   5  * it under the terms of the GNU General Public License as published by
   6  * the Free Software Foundation; either version 2 of the License, or
   7  * (at your option) any later version.
   8  */
   9
  10 #ifndef __NCSI_INTERNAL_H__
  11 #define __NCSI_INTERNAL_H__
  12
  13 enum {
  14         NCSI_CAP_BASE           = 0,
  15         NCSI_CAP_GENERIC        = 0,
  16         NCSI_CAP_BC,
  17         NCSI_CAP_MC,
  18         NCSI_CAP_BUFFER,
  19         NCSI_CAP_AEN,
  20         NCSI_CAP_VLAN,
  21         NCSI_CAP_MAX
  22 };
  23
  24 enum {
  25         NCSI_CAP_GENERIC_HWA             = 0x01, /* HW arbitration           */
  26         NCSI_CAP_GENERIC_HDS             = 0x02, /* HNC driver status change */
  27         NCSI_CAP_GENERIC_FC              = 0x04, /* HNC to MC flow control   */
  28         NCSI_CAP_GENERIC_FC1             = 0x08, /* MC to HNC flow control   */
  29         NCSI_CAP_GENERIC_MC              = 0x10, /* Global MC filtering      */
  30         NCSI_CAP_GENERIC_HWA_UNKNOWN     = 0x00, /* Unknown HW arbitration   */
  31         NCSI_CAP_GENERIC_HWA_SUPPORT     = 0x20, /* Supported HW arbitration */
  32         NCSI_CAP_GENERIC_HWA_NOT_SUPPORT = 0x40, /* No HW arbitration        */
  33         NCSI_CAP_GENERIC_HWA_RESERVED    = 0x60, /* Reserved HW arbitration  */
  34         NCSI_CAP_GENERIC_HWA_MASK        = 0x60, /* Mask for HW arbitration  */
  35         NCSI_CAP_GENERIC_MASK            = 0x7f,
  36         NCSI_CAP_BC_ARP                  = 0x01, /* ARP packet filtering     */
  37         NCSI_CAP_BC_DHCPC                = 0x02, /* DHCP client filtering    */
  38         NCSI_CAP_BC_DHCPS                = 0x04, /* DHCP server filtering    */
  39         NCSI_CAP_BC_NETBIOS              = 0x08, /* NetBIOS packet filtering */
  40         NCSI_CAP_BC_MASK                 = 0x0f,
  41         NCSI_CAP_MC_IPV6_NEIGHBOR        = 0x01, /* IPv6 neighbor filtering  */
  42         NCSI_CAP_MC_IPV6_ROUTER          = 0x02, /* IPv6 router filering     */
  43         NCSI_CAP_MC_DHCPV6_RELAY         = 0x04, /* DHCPv6 relay / server MC */
  44         NCSI_CAP_MC_DHCPV6_WELL_KNOWN    = 0x08, /* DHCPv6 well-known MC     */
  45         NCSI_CAP_MC_IPV6_MLD             = 0x10, /* IPv6 MLD filtering       */
  46         NCSI_CAP_MC_IPV6_NEIGHBOR_S      = 0x20, /* IPv6 neighbour filtering */
  47         NCSI_CAP_MC_MASK                 = 0x3f,
  48         NCSI_CAP_AEN_LSC                 = 0x01, /* Link status change       */
  49         NCSI_CAP_AEN_CR                  = 0x02, /* Configuration required   */
  50         NCSI_CAP_AEN_HDS                 = 0x04, /* HNC driver status        */
  51         NCSI_CAP_AEN_MASK                = 0x07,
  52         NCSI_CAP_VLAN_ONLY               = 0x01, /* Filter VLAN packet only  */
  53         NCSI_CAP_VLAN_NO                 = 0x02, /* Filter VLAN and non-VLAN */
  54         NCSI_CAP_VLAN_ANY                = 0x04, /* Filter Any-and-non-VLAN  */
  55         NCSI_CAP_VLAN_MASK               = 0x07
  56 };
  57
  58 enum {
  59         NCSI_MODE_BASE          = 0,
  60         NCSI_MODE_ENABLE        = 0,
  61         NCSI_MODE_TX_ENABLE,
  62         NCSI_MODE_LINK,
  63         NCSI_MODE_VLAN,
  64         NCSI_MODE_BC,
  65         NCSI_MODE_MC,
  66         NCSI_MODE_AEN,
  67         NCSI_MODE_FC,
  68         NCSI_MODE_MAX
  69 };
  70
  71 enum {
  72         NCSI_FILTER_BASE        = 0,
  73         NCSI_FILTER_VLAN        = 0,
  74         NCSI_FILTER_UC,
  75         NCSI_FILTER_MC,
  76         NCSI_FILTER_MIXED,
  77         NCSI_FILTER_MAX
  78 };
  79
  80 struct ncsi_channel_version {
  81         u32 version;            /* Supported BCD encoded NCSI version */
  82         u32 alpha2;             /* Supported BCD encoded NCSI version */
  83         u8  fw_name[12];        /* Firware name string                */
  84         u32 fw_version;         /* Firmware version                   */
  85         u16 pci_ids[4];         /* PCI identification                 */
  86         u32 mf_id;              /* Manufacture ID                     */
  87 };
  88
  89 struct ncsi_channel_cap {
  90         u32 index;      /* Index of channel capabilities */
  91         u32 cap;        /* NCSI channel capability       */
  92 };
  93
  94 struct ncsi_channel_mode {
  95         u32 index;      /* Index of channel modes      */
  96         u32 enable;     /* Enabled or disabled         */
  97         u32 size;       /* Valid entries in ncm_data[] */
  98         u32 data[8];    /* Data entries                */
  99 };
 100
 101 struct ncsi_channel_filter {
 102         u32 index;      /* Index of channel filters          */
 103         u32 total;      /* Total entries in the filter table */
 104         u64 bitmap;     /* Bitmap of valid entries           */
 105         u32 data[];     /* Data for the valid entries        */
 106 };
 107
 108 struct ncsi_channel_stats {
 109         u32 hnc_cnt_hi;         /* Counter cleared            */
 110         u32 hnc_cnt_lo;         /* Counter cleared            */
 111         u32 hnc_rx_bytes;       /* Rx bytes                   */
 112         u32 hnc_tx_bytes;       /* Tx bytes                   */
 113         u32 hnc_rx_uc_pkts;     /* Rx UC packets              */
 114         u32 hnc_rx_mc_pkts;     /* Rx MC packets              */
 115         u32 hnc_rx_bc_pkts;     /* Rx BC packets              */
 116         u32 hnc_tx_uc_pkts;     /* Tx UC packets              */
 117         u32 hnc_tx_mc_pkts;     /* Tx MC packets              */
 118         u32 hnc_tx_bc_pkts;     /* Tx BC packets              */
 119         u32 hnc_fcs_err;        /* FCS errors                 */
 120         u32 hnc_align_err;      /* Alignment errors           */
 121         u32 hnc_false_carrier;  /* False carrier detection    */
 122         u32 hnc_runt_pkts;      /* Rx runt packets            */
 123         u32 hnc_jabber_pkts;    /* Rx jabber packets          */
 124         u32 hnc_rx_pause_xon;   /* Rx pause XON frames        */
 125         u32 hnc_rx_pause_xoff;  /* Rx XOFF frames             */
 126         u32 hnc_tx_pause_xon;   /* Tx XON frames              */
 127         u32 hnc_tx_pause_xoff;  /* Tx XOFF frames             */
 128         u32 hnc_tx_s_collision; /* Single collision frames    */
 129         u32 hnc_tx_m_collision; /* Multiple collision frames  */
 130         u32 hnc_l_collision;    /* Late collision frames      */
 131         u32 hnc_e_collision;    /* Excessive collision frames */
 132         u32 hnc_rx_ctl_frames;  /* Rx control frames          */
 133         u32 hnc_rx_64_frames;   /* Rx 64-bytes frames         */
 134         u32 hnc_rx_127_frames;  /* Rx 65-127 bytes frames     */
 135         u32 hnc_rx_255_frames;  /* Rx 128-255 bytes frames    */
 136         u32 hnc_rx_511_frames;  /* Rx 256-511 bytes frames    */
 137         u32 hnc_rx_1023_frames; /* Rx 512-1023 bytes frames   */
 138         u32 hnc_rx_1522_frames; /* Rx 1024-1522 bytes frames  */
 139         u32 hnc_rx_9022_frames; /* Rx 1523-9022 bytes frames  */
 140         u32 hnc_tx_64_frames;   /* Tx 64-bytes frames         */
 141         u32 hnc_tx_127_frames;  /* Tx 65-127 bytes frames     */
 142         u32 hnc_tx_255_frames;  /* Tx 128-255 bytes frames    */
 143         u32 hnc_tx_511_frames;  /* Tx 256-511 bytes frames    */
 144         u32 hnc_tx_1023_frames; /* Tx 512-1023 bytes frames   */
 145         u32 hnc_tx_1522_frames; /* Tx 1024-1522 bytes frames  */
 146         u32 hnc_tx_9022_frames; /* Tx 1523-9022 bytes frames  */
 147         u32 hnc_rx_valid_bytes; /* Rx valid bytes             */
 148         u32 hnc_rx_runt_pkts;   /* Rx error runt packets      */
 149         u32 hnc_rx_jabber_pkts; /* Rx error jabber packets    */
 150         u32 ncsi_rx_cmds;       /* Rx NCSI commands           */
 151         u32 ncsi_dropped_cmds;  /* Dropped commands           */
 152         u32 ncsi_cmd_type_errs; /* Command type errors        */
 153         u32 ncsi_cmd_csum_errs; /* Command checksum errors    */
 154         u32 ncsi_rx_pkts;       /* Rx NCSI packets            */
 155         u32 ncsi_tx_pkts;       /* Tx NCSI packets            */
 156         u32 ncsi_tx_aen_pkts;   /* Tx AEN packets             */
 157         u32 pt_tx_pkts;         /* Tx packets                 */
 158         u32 pt_tx_dropped;      /* Tx dropped packets         */
 159         u32 pt_tx_channel_err;  /* Tx channel errors          */
 160         u32 pt_tx_us_err;       /* Tx undersize errors        */
 161         u32 pt_rx_pkts;         /* Rx packets                 */
 162         u32 pt_rx_dropped;      /* Rx dropped packets         */
 163         u32 pt_rx_channel_err;  /* Rx channel errors          */
 164         u32 pt_rx_us_err;       /* Rx undersize errors        */
 165         u32 pt_rx_os_err;       /* Rx oversize errors         */
 166 };
 167
 168 struct ncsi_dev_priv;
 169 struct ncsi_package;
 170
 171 #define NCSI_PACKAGE_SHIFT      5
 172 #define NCSI_PACKAGE_INDEX(c)   (((c) >> NCSI_PACKAGE_SHIFT) & 0x7)
 173 #define NCSI_RESERVED_CHANNEL   0x1f
 174 #define NCSI_CHANNEL_INDEX(c)   ((c) & ((1 << NCSI_PACKAGE_SHIFT) - 1))
 175 #define NCSI_TO_CHANNEL(p, c)   (((p) << NCSI_PACKAGE_SHIFT) | (c))
 176
 177 struct ncsi_channel {
 178         unsigned char               id;
 179         int                         state;
 180 #define NCSI_CHANNEL_INACTIVE           1
 181 #define NCSI_CHANNEL_ACTIVE             2
 182 #define NCSI_CHANNEL_INVISIBLE          3
 183         bool                        reconfigure_needed;
 184         spinlock_t                  lock;       /* Protect filters etc */
 185         struct ncsi_package         *package;
 186         struct ncsi_channel_version version;
 187         struct ncsi_channel_cap     caps[NCSI_CAP_MAX];
 188         struct ncsi_channel_mode    modes[NCSI_MODE_MAX];
 189         struct ncsi_channel_filter  *filters[NCSI_FILTER_MAX];
 190         struct ncsi_channel_stats   stats;
 191         struct {
 192                 struct timer_list   timer;
 193                 bool                enabled;
 194                 unsigned int        state;
 195 #define NCSI_CHANNEL_MONITOR_START      0
 196 #define NCSI_CHANNEL_MONITOR_RETRY      1
 197 #define NCSI_CHANNEL_MONITOR_WAIT       2
 198 #define NCSI_CHANNEL_MONITOR_WAIT_MAX   5
 199         } monitor;
 200         struct list_head            node;
 201         struct list_head            link;
 202 };
 203
 204 struct ncsi_package {
 205         unsigned char        id;          /* NCSI 3-bits package ID */
 206         unsigned char        uuid[16];    /* UUID                   */
 207         struct ncsi_dev_priv *ndp;        /* NCSI device            */
 208         spinlock_t           lock;        /* Protect the package    */
 209         unsigned int         channel_num; /* Number of channels     */
 210         struct list_head     channels;    /* List of chanels        */
 211         struct list_head     node;        /* Form list of packages  */
 212 };
 213
 214 struct ncsi_request {
 215         unsigned char        id;      /* Request ID - 0 to 255           */
 216         bool                 used;    /* Request that has been assigned  */
 217         unsigned int         flags;   /* NCSI request property           */
 218 #define NCSI_REQ_FLAG_EVENT_DRIVEN      1
 219         struct ncsi_dev_priv *ndp;    /* Associated NCSI device          */
 220         struct sk_buff       *cmd;    /* Associated NCSI command packet  */
 221         struct sk_buff       *rsp;    /* Associated NCSI response packet */
 222         struct timer_list    timer;   /* Timer on waiting for response   */
 223         bool                 enabled; /* Time has been enabled or not    */
 224 };
 225
 226 enum {
 227         ncsi_dev_state_major            = 0xff00,
 228         ncsi_dev_state_minor            = 0x00ff,
 229         ncsi_dev_state_probe_deselect   = 0x0201,
 230         ncsi_dev_state_probe_package,
 231         ncsi_dev_state_probe_channel,
 232         ncsi_dev_state_probe_cis,
 233         ncsi_dev_state_probe_gvi,
 234         ncsi_dev_state_probe_gc,
 235         ncsi_dev_state_probe_gls,
 236         ncsi_dev_state_probe_dp,
 237         ncsi_dev_state_config_sp        = 0x0301,
 238         ncsi_dev_state_config_cis,
 239         ncsi_dev_state_config_clear_vids,
 240         ncsi_dev_state_config_svf,
 241         ncsi_dev_state_config_ev,
 242         ncsi_dev_state_config_sma,
 243         ncsi_dev_state_config_ebf,
 244 #if IS_ENABLED(CONFIG_IPV6)
 245         ncsi_dev_state_config_egmf,
 246 #endif
 247         ncsi_dev_state_config_ecnt,
 248         ncsi_dev_state_config_ec,
 249         ncsi_dev_state_config_ae,
 250         ncsi_dev_state_config_gls,
 251         ncsi_dev_state_config_done,
 252         ncsi_dev_state_suspend_select   = 0x0401,
 253         ncsi_dev_state_suspend_gls,
 254         ncsi_dev_state_suspend_dcnt,
 255         ncsi_dev_state_suspend_dc,
 256         ncsi_dev_state_suspend_deselect,
 257         ncsi_dev_state_suspend_done
 258 };
 259
 260 struct vlan_vid {
 261         struct list_head list;
 262         __be16 proto;
 263         u16 vid;
 264 };
 265
 266 struct ncsi_dev_priv {
 267         struct ncsi_dev     ndev;            /* Associated NCSI device     */
 268         unsigned int        flags;           /* NCSI device flags          */
 269 #define NCSI_DEV_PROBED         1            /* Finalized NCSI topology    */
 270 #define NCSI_DEV_HWA            2            /* Enabled HW arbitration     */
 271 #define NCSI_DEV_RESHUFFLE      4
 272         spinlock_t          lock;            /* Protect the NCSI device    */
 273 #if IS_ENABLED(CONFIG_IPV6)
 274         unsigned int        inet6_addr_num;  /* Number of IPv6 addresses   */
 275 #endif
 276         unsigned int        package_num;     /* Number of packages         */
 277         struct list_head    packages;        /* List of packages           */
 278         struct ncsi_channel *hot_channel;    /* Channel was ever active    */
 279         struct ncsi_request requests[256];   /* Request table              */
 280         unsigned int        request_id;      /* Last used request ID       */
 281 #define NCSI_REQ_START_IDX      1
 282         unsigned int        pending_req_num; /* Number of pending requests */
 283         struct ncsi_package *active_package; /* Currently handled package  */
 284         struct ncsi_channel *active_channel; /* Currently handled channel  */
 285         struct list_head    channel_queue;   /* Config queue of channels   */
 286         struct work_struct  work;            /* For channel management     */
 287         struct packet_type  ptype;           /* NCSI packet Rx handler     */
 288         struct list_head    node;            /* Form NCSI device list      */
 289 #define NCSI_MAX_VLAN_VIDS      15
 290         struct list_head    vlan_vids;       /* List of active VLAN IDs */
 291 };
 292
 293 struct ncsi_cmd_arg {
 294         struct ncsi_dev_priv *ndp;        /* Associated NCSI device        */
 295         unsigned char        type;        /* Command in the NCSI packet    */
 296         unsigned char        id;          /* Request ID (sequence number)  */
 297         unsigned char        package;     /* Destination package ID        */
 298         unsigned char        channel;     /* Detination channel ID or 0x1f */
 299         unsigned short       payload;     /* Command packet payload length */
 300         unsigned int         req_flags;   /* NCSI request properties       */
 301         union {
 302                 unsigned char  bytes[16]; /* Command packet specific data  */
 303                 unsigned short words[8];
 304                 unsigned int   dwords[4];
 305         };
 306 };
 307
 308 extern struct list_head ncsi_dev_list;
 309 extern spinlock_t ncsi_dev_lock;
 310
 311 #define TO_NCSI_DEV_PRIV(nd) \
 312         container_of(nd, struct ncsi_dev_priv, ndev)
 313 #define NCSI_FOR_EACH_DEV(ndp) \
 314         list_for_each_entry_rcu(ndp, &ncsi_dev_list, node)
 315 #define NCSI_FOR_EACH_PACKAGE(ndp, np) \
 316         list_for_each_entry_rcu(np, &ndp->packages, node)
 317 #define NCSI_FOR_EACH_CHANNEL(np, nc) \
 318         list_for_each_entry_rcu(nc, &np->channels, node)
 319
 320 /* Resources */
 321 int ncsi_find_filter(struct ncsi_channel *nc, int table, void *data);
 322 int ncsi_add_filter(struct ncsi_channel *nc, int table, void *data);
 323 int ncsi_remove_filter(struct ncsi_channel *nc, int table, int index);
 324 void ncsi_start_channel_monitor(struct ncsi_channel *nc);
 325 void ncsi_stop_channel_monitor(struct ncsi_channel *nc);
 326 struct ncsi_channel *ncsi_find_channel(struct ncsi_package *np,
 327                                        unsigned char id);
 328 struct ncsi_channel *ncsi_add_channel(struct ncsi_package *np,
 329                                       unsigned char id);
 330 struct ncsi_package *ncsi_find_package(struct ncsi_dev_priv *ndp,
 331                                        unsigned char id);
 332 struct ncsi_package *ncsi_add_package(struct ncsi_dev_priv *ndp,
 333                                       unsigned char id);
 334 void ncsi_remove_package(struct ncsi_package *np);
 335 void ncsi_find_package_and_channel(struct ncsi_dev_priv *ndp,
 336                                    unsigned char id,
 337                                    struct ncsi_package **np,
 338                                    struct ncsi_channel **nc);
 339 struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp,
 340                                         unsigned int req_flags);
 341 void ncsi_free_request(struct ncsi_request *nr);
 342 struct ncsi_dev *ncsi_find_dev(struct net_device *dev);
 343 int ncsi_process_next_channel(struct ncsi_dev_priv *ndp);
 344
 345 /* Packet handlers */
 346 u32 ncsi_calculate_checksum(unsigned char *data, int len);
 347 int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca);
 348 int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
 349                  struct packet_type *pt, struct net_device *orig_dev);
 350 int ncsi_aen_handler(struct ncsi_dev_priv *ndp, struct sk_buff *skb);
 351
 352 #endif /* __NCSI_INTERNAL_H__ */