LXR linux/net/ncsi/internal.h

   1/* SPDX-License-Identifier: GPL-2.0-or-later */
   2/*
   3 * Copyright Gavin Shan, IBM Corporation 2016.
   4 */
   5
   6#ifndef __NCSI_INTERNAL_H__
   7#define __NCSI_INTERNAL_H__
   8
   9enum {
  10        NCSI_CAP_BASE           = 0,
  11        NCSI_CAP_GENERIC        = 0,
  12        NCSI_CAP_BC,
  13        NCSI_CAP_MC,
  14        NCSI_CAP_BUFFER,
  15        NCSI_CAP_AEN,
  16        NCSI_CAP_VLAN,
  17        NCSI_CAP_MAX
  18};
  19
  20enum {
  21        NCSI_CAP_GENERIC_HWA             = 0x01, /* HW arbitration           */
  22        NCSI_CAP_GENERIC_HDS             = 0x02, /* HNC driver status change */
  23        NCSI_CAP_GENERIC_FC              = 0x04, /* HNC to MC flow control   */
  24        NCSI_CAP_GENERIC_FC1             = 0x08, /* MC to HNC flow control   */
  25        NCSI_CAP_GENERIC_MC              = 0x10, /* Global MC filtering      */
  26        NCSI_CAP_GENERIC_HWA_UNKNOWN     = 0x00, /* Unknown HW arbitration   */
  27        NCSI_CAP_GENERIC_HWA_SUPPORT     = 0x20, /* Supported HW arbitration */
  28        NCSI_CAP_GENERIC_HWA_NOT_SUPPORT = 0x40, /* No HW arbitration        */
  29        NCSI_CAP_GENERIC_HWA_RESERVED    = 0x60, /* Reserved HW arbitration  */
  30        NCSI_CAP_GENERIC_HWA_MASK        = 0x60, /* Mask for HW arbitration  */
  31        NCSI_CAP_GENERIC_MASK            = 0x7f,
  32        NCSI_CAP_BC_ARP                  = 0x01, /* ARP packet filtering     */
  33        NCSI_CAP_BC_DHCPC                = 0x02, /* DHCP client filtering    */
  34        NCSI_CAP_BC_DHCPS                = 0x04, /* DHCP server filtering    */
  35        NCSI_CAP_BC_NETBIOS              = 0x08, /* NetBIOS packet filtering */
  36        NCSI_CAP_BC_MASK                 = 0x0f,
  37        NCSI_CAP_MC_IPV6_NEIGHBOR        = 0x01, /* IPv6 neighbor filtering  */
  38        NCSI_CAP_MC_IPV6_ROUTER          = 0x02, /* IPv6 router filering     */
  39        NCSI_CAP_MC_DHCPV6_RELAY         = 0x04, /* DHCPv6 relay / server MC */
  40        NCSI_CAP_MC_DHCPV6_WELL_KNOWN    = 0x08, /* DHCPv6 well-known MC     */
  41        NCSI_CAP_MC_IPV6_MLD             = 0x10, /* IPv6 MLD filtering       */
  42        NCSI_CAP_MC_IPV6_NEIGHBOR_S      = 0x20, /* IPv6 neighbour filtering */
  43        NCSI_CAP_MC_MASK                 = 0x3f,
  44        NCSI_CAP_AEN_LSC                 = 0x01, /* Link status change       */
  45        NCSI_CAP_AEN_CR                  = 0x02, /* Configuration required   */
  46        NCSI_CAP_AEN_HDS                 = 0x04, /* HNC driver status        */
  47        NCSI_CAP_AEN_MASK                = 0x07,
  48        NCSI_CAP_VLAN_ONLY               = 0x01, /* Filter VLAN packet only  */
  49        NCSI_CAP_VLAN_NO                 = 0x02, /* Filter VLAN and non-VLAN */
  50        NCSI_CAP_VLAN_ANY                = 0x04, /* Filter Any-and-non-VLAN  */
  51        NCSI_CAP_VLAN_MASK               = 0x07
  52};
  53
  54enum {
  55        NCSI_MODE_BASE          = 0,
  56        NCSI_MODE_ENABLE        = 0,
  57        NCSI_MODE_TX_ENABLE,
  58        NCSI_MODE_LINK,
  59        NCSI_MODE_VLAN,
  60        NCSI_MODE_BC,
  61        NCSI_MODE_MC,
  62        NCSI_MODE_AEN,
  63        NCSI_MODE_FC,
  64        NCSI_MODE_MAX
  65};
  66
  67/* Supported media status bits for Mellanox Mac affinity command.
  68 * Bit (0-2) for different protocol support; Bit 1 for RBT support,
  69 * bit 1 for SMBUS support and bit 2 for PCIE support. Bit (3-5)
  70 * for different protocol availability. Bit 4 for RBT, bit 4 for
  71 * SMBUS and bit 5 for PCIE.
  72 */
  73enum {
  74        MLX_MC_RBT_SUPPORT  = 0x01, /* MC supports RBT         */
  75        MLX_MC_RBT_AVL      = 0x08, /* RBT medium is available */
  76};
  77
  78/* OEM Vendor Manufacture ID */
  79#define NCSI_OEM_MFR_MLX_ID             0x8119
  80#define NCSI_OEM_MFR_BCM_ID             0x113d
  81/* Broadcom specific OEM Command */
  82#define NCSI_OEM_BCM_CMD_GMA            0x01   /* CMD ID for Get MAC */
  83/* Mellanox specific OEM Command */
  84#define NCSI_OEM_MLX_CMD_GMA            0x00   /* CMD ID for Get MAC */
  85#define NCSI_OEM_MLX_CMD_GMA_PARAM      0x1b   /* Parameter for GMA  */
  86#define NCSI_OEM_MLX_CMD_SMAF           0x01   /* CMD ID for Set MC Affinity */
  87#define NCSI_OEM_MLX_CMD_SMAF_PARAM     0x07   /* Parameter for SMAF         */
  88/* OEM Command payload lengths*/
  89#define NCSI_OEM_BCM_CMD_GMA_LEN        12
  90#define NCSI_OEM_MLX_CMD_GMA_LEN        8
  91#define NCSI_OEM_MLX_CMD_SMAF_LEN        60
  92/* Offset in OEM request */
  93#define MLX_SMAF_MAC_ADDR_OFFSET         8     /* Offset for MAC in SMAF    */
  94#define MLX_SMAF_MED_SUPPORT_OFFSET      14    /* Offset for medium in SMAF */
  95/* Mac address offset in OEM response */
  96#define BCM_MAC_ADDR_OFFSET             28
  97#define MLX_MAC_ADDR_OFFSET             8
  98
  99
 100struct ncsi_channel_version {
 101        u32 version;            /* Supported BCD encoded NCSI version */
 102        u32 alpha2;             /* Supported BCD encoded NCSI version */
 103        u8  fw_name[12];        /* Firmware name string                */
 104        u32 fw_version;         /* Firmware version                   */
 105        u16 pci_ids[4];         /* PCI identification                 */
 106        u32 mf_id;              /* Manufacture ID                     */
 107};
 108
 109struct ncsi_channel_cap {
 110        u32 index;      /* Index of channel capabilities */
 111        u32 cap;        /* NCSI channel capability       */
 112};
 113
 114struct ncsi_channel_mode {
 115        u32 index;      /* Index of channel modes      */
 116        u32 enable;     /* Enabled or disabled         */
 117        u32 size;       /* Valid entries in ncm_data[] */
 118        u32 data[8];    /* Data entries                */
 119};
 120
 121struct ncsi_channel_mac_filter {
 122        u8      n_uc;
 123        u8      n_mc;
 124        u8      n_mixed;
 125        u64     bitmap;
 126        unsigned char   *addrs;
 127};
 128
 129struct ncsi_channel_vlan_filter {
 130        u8      n_vids;
 131        u64     bitmap;
 132        u16     *vids;
 133};
 134
 135struct ncsi_channel_stats {
 136        u32 hnc_cnt_hi;         /* Counter cleared            */
 137        u32 hnc_cnt_lo;         /* Counter cleared            */
 138        u32 hnc_rx_bytes;       /* Rx bytes                   */
 139        u32 hnc_tx_bytes;       /* Tx bytes                   */
 140        u32 hnc_rx_uc_pkts;     /* Rx UC packets              */
 141        u32 hnc_rx_mc_pkts;     /* Rx MC packets              */
 142        u32 hnc_rx_bc_pkts;     /* Rx BC packets              */
 143        u32 hnc_tx_uc_pkts;     /* Tx UC packets              */
 144        u32 hnc_tx_mc_pkts;     /* Tx MC packets              */
 145        u32 hnc_tx_bc_pkts;     /* Tx BC packets              */
 146        u32 hnc_fcs_err;        /* FCS errors                 */
 147        u32 hnc_align_err;      /* Alignment errors           */
 148        u32 hnc_false_carrier;  /* False carrier detection    */
 149        u32 hnc_runt_pkts;      /* Rx runt packets            */
 150        u32 hnc_jabber_pkts;    /* Rx jabber packets          */
 151        u32 hnc_rx_pause_xon;   /* Rx pause XON frames        */
 152        u32 hnc_rx_pause_xoff;  /* Rx XOFF frames             */
 153        u32 hnc_tx_pause_xon;   /* Tx XON frames              */
 154        u32 hnc_tx_pause_xoff;  /* Tx XOFF frames             */
 155        u32 hnc_tx_s_collision; /* Single collision frames    */
 156        u32 hnc_tx_m_collision; /* Multiple collision frames  */
 157        u32 hnc_l_collision;    /* Late collision frames      */
 158        u32 hnc_e_collision;    /* Excessive collision frames */
 159        u32 hnc_rx_ctl_frames;  /* Rx control frames          */
 160        u32 hnc_rx_64_frames;   /* Rx 64-bytes frames         */
 161        u32 hnc_rx_127_frames;  /* Rx 65-127 bytes frames     */
 162        u32 hnc_rx_255_frames;  /* Rx 128-255 bytes frames    */
 163        u32 hnc_rx_511_frames;  /* Rx 256-511 bytes frames    */
 164        u32 hnc_rx_1023_frames; /* Rx 512-1023 bytes frames   */
 165        u32 hnc_rx_1522_frames; /* Rx 1024-1522 bytes frames  */
 166        u32 hnc_rx_9022_frames; /* Rx 1523-9022 bytes frames  */
 167        u32 hnc_tx_64_frames;   /* Tx 64-bytes frames         */
 168        u32 hnc_tx_127_frames;  /* Tx 65-127 bytes frames     */
 169        u32 hnc_tx_255_frames;  /* Tx 128-255 bytes frames    */
 170        u32 hnc_tx_511_frames;  /* Tx 256-511 bytes frames    */
 171        u32 hnc_tx_1023_frames; /* Tx 512-1023 bytes frames   */
 172        u32 hnc_tx_1522_frames; /* Tx 1024-1522 bytes frames  */
 173        u32 hnc_tx_9022_frames; /* Tx 1523-9022 bytes frames  */
 174        u32 hnc_rx_valid_bytes; /* Rx valid bytes             */
 175        u32 hnc_rx_runt_pkts;   /* Rx error runt packets      */
 176        u32 hnc_rx_jabber_pkts; /* Rx error jabber packets    */
 177        u32 ncsi_rx_cmds;       /* Rx NCSI commands           */
 178        u32 ncsi_dropped_cmds;  /* Dropped commands           */
 179        u32 ncsi_cmd_type_errs; /* Command type errors        */
 180        u32 ncsi_cmd_csum_errs; /* Command checksum errors    */
 181        u32 ncsi_rx_pkts;       /* Rx NCSI packets            */
 182        u32 ncsi_tx_pkts;       /* Tx NCSI packets            */
 183        u32 ncsi_tx_aen_pkts;   /* Tx AEN packets             */
 184        u32 pt_tx_pkts;         /* Tx packets                 */
 185        u32 pt_tx_dropped;      /* Tx dropped packets         */
 186        u32 pt_tx_channel_err;  /* Tx channel errors          */
 187        u32 pt_tx_us_err;       /* Tx undersize errors        */
 188        u32 pt_rx_pkts;         /* Rx packets                 */
 189        u32 pt_rx_dropped;      /* Rx dropped packets         */
 190        u32 pt_rx_channel_err;  /* Rx channel errors          */
 191        u32 pt_rx_us_err;       /* Rx undersize errors        */
 192        u32 pt_rx_os_err;       /* Rx oversize errors         */
 193};
 194
 195struct ncsi_dev_priv;
 196struct ncsi_package;
 197
 198#define NCSI_PACKAGE_SHIFT      5
 199#define NCSI_PACKAGE_INDEX(c)   (((c) >> NCSI_PACKAGE_SHIFT) & 0x7)
 200#define NCSI_RESERVED_CHANNEL   0x1f
 201#define NCSI_CHANNEL_INDEX(c)   ((c) & ((1 << NCSI_PACKAGE_SHIFT) - 1))
 202#define NCSI_TO_CHANNEL(p, c)   (((p) << NCSI_PACKAGE_SHIFT) | (c))
 203#define NCSI_MAX_PACKAGE        8
 204#define NCSI_MAX_CHANNEL        32
 205
 206struct ncsi_channel {
 207        unsigned char               id;
 208        int                         state;
 209#define NCSI_CHANNEL_INACTIVE           1
 210#define NCSI_CHANNEL_ACTIVE             2
 211#define NCSI_CHANNEL_INVISIBLE          3
 212        bool                        reconfigure_needed;
 213        spinlock_t                  lock;       /* Protect filters etc */
 214        struct ncsi_package         *package;
 215        struct ncsi_channel_version version;
 216        struct ncsi_channel_cap     caps[NCSI_CAP_MAX];
 217        struct ncsi_channel_mode    modes[NCSI_MODE_MAX];
 218        /* Filtering Settings */
 219        struct ncsi_channel_mac_filter  mac_filter;
 220        struct ncsi_channel_vlan_filter vlan_filter;
 221        struct ncsi_channel_stats   stats;
 222        struct {
 223                struct timer_list   timer;
 224                bool                enabled;
 225                unsigned int        state;
 226#define NCSI_CHANNEL_MONITOR_START      0
 227#define NCSI_CHANNEL_MONITOR_RETRY      1
 228#define NCSI_CHANNEL_MONITOR_WAIT       2
 229#define NCSI_CHANNEL_MONITOR_WAIT_MAX   5
 230        } monitor;
 231        struct list_head            node;
 232        struct list_head            link;
 233};
 234
 235struct ncsi_package {
 236        unsigned char        id;          /* NCSI 3-bits package ID */
 237        unsigned char        uuid[16];    /* UUID                   */
 238        struct ncsi_dev_priv *ndp;        /* NCSI device            */
 239        spinlock_t           lock;        /* Protect the package    */
 240        unsigned int         channel_num; /* Number of channels     */
 241        struct list_head     channels;    /* List of chanels        */
 242        struct list_head     node;        /* Form list of packages  */
 243
 244        bool                 multi_channel; /* Enable multiple channels  */
 245        u32                  channel_whitelist; /* Channels to configure */
 246        struct ncsi_channel  *preferred_channel; /* Primary channel      */
 247};
 248
 249struct ncsi_request {
 250        unsigned char        id;      /* Request ID - 0 to 255           */
 251        bool                 used;    /* Request that has been assigned  */
 252        unsigned int         flags;   /* NCSI request property           */
 253#define NCSI_REQ_FLAG_EVENT_DRIVEN      1
 254#define NCSI_REQ_FLAG_NETLINK_DRIVEN    2
 255        struct ncsi_dev_priv *ndp;    /* Associated NCSI device          */
 256        struct sk_buff       *cmd;    /* Associated NCSI command packet  */
 257        struct sk_buff       *rsp;    /* Associated NCSI response packet */
 258        struct timer_list    timer;   /* Timer on waiting for response   */
 259        bool                 enabled; /* Time has been enabled or not    */
 260        u32                  snd_seq;     /* netlink sending sequence number */
 261        u32                  snd_portid;  /* netlink portid of sender        */
 262        struct nlmsghdr      nlhdr;       /* netlink message header          */
 263};
 264
 265enum {
 266        ncsi_dev_state_major            = 0xff00,
 267        ncsi_dev_state_minor            = 0x00ff,
 268        ncsi_dev_state_probe_deselect   = 0x0201,
 269        ncsi_dev_state_probe_package,
 270        ncsi_dev_state_probe_channel,
 271        ncsi_dev_state_probe_mlx_gma,
 272        ncsi_dev_state_probe_mlx_smaf,
 273        ncsi_dev_state_probe_cis,
 274        ncsi_dev_state_probe_gvi,
 275        ncsi_dev_state_probe_gc,
 276        ncsi_dev_state_probe_gls,
 277        ncsi_dev_state_probe_dp,
 278        ncsi_dev_state_config_sp        = 0x0301,
 279        ncsi_dev_state_config_cis,
 280        ncsi_dev_state_config_oem_gma,
 281        ncsi_dev_state_config_clear_vids,
 282        ncsi_dev_state_config_svf,
 283        ncsi_dev_state_config_ev,
 284        ncsi_dev_state_config_sma,
 285        ncsi_dev_state_config_ebf,
 286        ncsi_dev_state_config_dgmf,
 287        ncsi_dev_state_config_ecnt,
 288        ncsi_dev_state_config_ec,
 289        ncsi_dev_state_config_ae,
 290        ncsi_dev_state_config_gls,
 291        ncsi_dev_state_config_done,
 292        ncsi_dev_state_suspend_select   = 0x0401,
 293        ncsi_dev_state_suspend_gls,
 294        ncsi_dev_state_suspend_dcnt,
 295        ncsi_dev_state_suspend_dc,
 296        ncsi_dev_state_suspend_deselect,
 297        ncsi_dev_state_suspend_done
 298};
 299
 300struct vlan_vid {
 301        struct list_head list;
 302        __be16 proto;
 303        u16 vid;
 304};
 305
 306struct ncsi_dev_priv {
 307        struct ncsi_dev     ndev;            /* Associated NCSI device     */
 308        unsigned int        flags;           /* NCSI device flags          */
 309#define NCSI_DEV_PROBED         1            /* Finalized NCSI topology    */
 310#define NCSI_DEV_HWA            2            /* Enabled HW arbitration     */
 311#define NCSI_DEV_RESHUFFLE      4
 312#define NCSI_DEV_RESET          8            /* Reset state of NC          */
 313        unsigned int        gma_flag;        /* OEM GMA flag               */
 314        spinlock_t          lock;            /* Protect the NCSI device    */
 315        unsigned int        package_probe_id;/* Current ID during probe    */
 316        unsigned int        package_num;     /* Number of packages         */
 317        struct list_head    packages;        /* List of packages           */
 318        struct ncsi_channel *hot_channel;    /* Channel was ever active    */
 319        struct ncsi_request requests[256];   /* Request table              */
 320        unsigned int        request_id;      /* Last used request ID       */
 321#define NCSI_REQ_START_IDX      1
 322        unsigned int        pending_req_num; /* Number of pending requests */
 323        struct ncsi_package *active_package; /* Currently handled package  */
 324        struct ncsi_channel *active_channel; /* Currently handled channel  */
 325        struct list_head    channel_queue;   /* Config queue of channels   */
 326        struct work_struct  work;            /* For channel management     */
 327        struct packet_type  ptype;           /* NCSI packet Rx handler     */
 328        struct list_head    node;            /* Form NCSI device list      */
 329#define NCSI_MAX_VLAN_VIDS      15
 330        struct list_head    vlan_vids;       /* List of active VLAN IDs */
 331
 332        bool                multi_package;   /* Enable multiple packages   */
 333        bool                mlx_multi_host;  /* Enable multi host Mellanox */
 334        u32                 package_whitelist; /* Packages to configure    */
 335};
 336
 337struct ncsi_cmd_arg {
 338        struct ncsi_dev_priv *ndp;        /* Associated NCSI device        */
 339        unsigned char        type;        /* Command in the NCSI packet    */
 340        unsigned char        id;          /* Request ID (sequence number)  */
 341        unsigned char        package;     /* Destination package ID        */
 342        unsigned char        channel;     /* Detination channel ID or 0x1f */
 343        unsigned short       payload;     /* Command packet payload length */
 344        unsigned int         req_flags;   /* NCSI request properties       */
 345        union {
 346                unsigned char  bytes[16]; /* Command packet specific data  */
 347                unsigned short words[8];
 348                unsigned int   dwords[4];
 349        };
 350        unsigned char        *data;       /* NCSI OEM data                 */
 351        struct genl_info     *info;       /* Netlink information           */
 352};
 353
 354extern struct list_head ncsi_dev_list;
 355extern spinlock_t ncsi_dev_lock;
 356
 357#define TO_NCSI_DEV_PRIV(nd) \
 358        container_of(nd, struct ncsi_dev_priv, ndev)
 359#define NCSI_FOR_EACH_DEV(ndp) \
 360        list_for_each_entry_rcu(ndp, &ncsi_dev_list, node)
 361#define NCSI_FOR_EACH_PACKAGE(ndp, np) \
 362        list_for_each_entry_rcu(np, &ndp->packages, node)
 363#define NCSI_FOR_EACH_CHANNEL(np, nc) \
 364        list_for_each_entry_rcu(nc, &np->channels, node)
 365
 366/* Resources */
 367int ncsi_reset_dev(struct ncsi_dev *nd);
 368void ncsi_start_channel_monitor(struct ncsi_channel *nc);
 369void ncsi_stop_channel_monitor(struct ncsi_channel *nc);
 370struct ncsi_channel *ncsi_find_channel(struct ncsi_package *np,
 371                                       unsigned char id);
 372struct ncsi_channel *ncsi_add_channel(struct ncsi_package *np,
 373                                      unsigned char id);
 374struct ncsi_package *ncsi_find_package(struct ncsi_dev_priv *ndp,
 375                                       unsigned char id);
 376struct ncsi_package *ncsi_add_package(struct ncsi_dev_priv *ndp,
 377                                      unsigned char id);
 378void ncsi_remove_package(struct ncsi_package *np);
 379void ncsi_find_package_and_channel(struct ncsi_dev_priv *ndp,
 380                                   unsigned char id,
 381                                   struct ncsi_package **np,
 382                                   struct ncsi_channel **nc);
 383struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp,
 384                                        unsigned int req_flags);
 385void ncsi_free_request(struct ncsi_request *nr);
 386struct ncsi_dev *ncsi_find_dev(struct net_device *dev);
 387int ncsi_process_next_channel(struct ncsi_dev_priv *ndp);
 388bool ncsi_channel_has_link(struct ncsi_channel *channel);
 389bool ncsi_channel_is_last(struct ncsi_dev_priv *ndp,
 390                          struct ncsi_channel *channel);
 391int ncsi_update_tx_channel(struct ncsi_dev_priv *ndp,
 392                           struct ncsi_package *np,
 393                           struct ncsi_channel *disable,
 394                           struct ncsi_channel *enable);
 395
 396/* Packet handlers */
 397u32 ncsi_calculate_checksum(unsigned char *data, int len);
 398int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca);
 399int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
 400                 struct packet_type *pt, struct net_device *orig_dev);
 401int ncsi_aen_handler(struct ncsi_dev_priv *ndp, struct sk_buff *skb);
 402
 403#endif /* __NCSI_INTERNAL_H__ */
 404