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
   9 enum {
  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
  20 enum {
  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
  54 enum {
  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 /* OEM Vendor Manufacture ID */
  68 #define NCSI_OEM_MFR_MLX_ID             0x8119
  69 #define NCSI_OEM_MFR_BCM_ID             0x113d
  70 /* Broadcom specific OEM Command */
  71 #define NCSI_OEM_BCM_CMD_GMA            0x01   /* CMD ID for Get MAC */
  72 /* Mellanox specific OEM Command */
  73 #define NCSI_OEM_MLX_CMD_GMA            0x00   /* CMD ID for Get MAC */
  74 #define NCSI_OEM_MLX_CMD_GMA_PARAM      0x1b   /* Parameter for GMA  */
  75 /* OEM Command payload lengths*/
  76 #define NCSI_OEM_BCM_CMD_GMA_LEN        12
  77 #define NCSI_OEM_MLX_CMD_GMA_LEN        8
  78 /* Mac address offset in OEM response */
  79 #define BCM_MAC_ADDR_OFFSET             28
  80 #define MLX_MAC_ADDR_OFFSET             8
  81
  82
  83 struct ncsi_channel_version {
  84         u32 version;            /* Supported BCD encoded NCSI version */
  85         u32 alpha2;             /* Supported BCD encoded NCSI version */
  86         u8  fw_name[12];        /* Firware name string                */
  87         u32 fw_version;         /* Firmware version                   */
  88         u16 pci_ids[4];         /* PCI identification                 */
  89         u32 mf_id;              /* Manufacture ID                     */
  90 };
  91
  92 struct ncsi_channel_cap {
  93         u32 index;      /* Index of channel capabilities */
  94         u32 cap;        /* NCSI channel capability       */
  95 };
  96
  97 struct ncsi_channel_mode {
  98         u32 index;      /* Index of channel modes      */
  99         u32 enable;     /* Enabled or disabled         */
 100         u32 size;       /* Valid entries in ncm_data[] */
 101         u32 data[8];    /* Data entries                */
 102 };
 103
 104 struct ncsi_channel_mac_filter {
 105         u8      n_uc;
 106         u8      n_mc;
 107         u8      n_mixed;
 108         u64     bitmap;
 109         unsigned char   *addrs;
 110 };
 111
 112 struct ncsi_channel_vlan_filter {
 113         u8      n_vids;
 114         u64     bitmap;
 115         u16     *vids;
 116 };
 117
 118 struct ncsi_channel_stats {
 119         u32 hnc_cnt_hi;         /* Counter cleared            */
 120         u32 hnc_cnt_lo;         /* Counter cleared            */
 121         u32 hnc_rx_bytes;       /* Rx bytes                   */
 122         u32 hnc_tx_bytes;       /* Tx bytes                   */
 123         u32 hnc_rx_uc_pkts;     /* Rx UC packets              */
 124         u32 hnc_rx_mc_pkts;     /* Rx MC packets              */
 125         u32 hnc_rx_bc_pkts;     /* Rx BC packets              */
 126         u32 hnc_tx_uc_pkts;     /* Tx UC packets              */
 127         u32 hnc_tx_mc_pkts;     /* Tx MC packets              */
 128         u32 hnc_tx_bc_pkts;     /* Tx BC packets              */
 129         u32 hnc_fcs_err;        /* FCS errors                 */
 130         u32 hnc_align_err;      /* Alignment errors           */
 131         u32 hnc_false_carrier;  /* False carrier detection    */
 132         u32 hnc_runt_pkts;      /* Rx runt packets            */
 133         u32 hnc_jabber_pkts;    /* Rx jabber packets          */
 134         u32 hnc_rx_pause_xon;   /* Rx pause XON frames        */
 135         u32 hnc_rx_pause_xoff;  /* Rx XOFF frames             */
 136         u32 hnc_tx_pause_xon;   /* Tx XON frames              */
 137         u32 hnc_tx_pause_xoff;  /* Tx XOFF frames             */
 138         u32 hnc_tx_s_collision; /* Single collision frames    */
 139         u32 hnc_tx_m_collision; /* Multiple collision frames  */
 140         u32 hnc_l_collision;    /* Late collision frames      */
 141         u32 hnc_e_collision;    /* Excessive collision frames */
 142         u32 hnc_rx_ctl_frames;  /* Rx control frames          */
 143         u32 hnc_rx_64_frames;   /* Rx 64-bytes frames         */
 144         u32 hnc_rx_127_frames;  /* Rx 65-127 bytes frames     */
 145         u32 hnc_rx_255_frames;  /* Rx 128-255 bytes frames    */
 146         u32 hnc_rx_511_frames;  /* Rx 256-511 bytes frames    */
 147         u32 hnc_rx_1023_frames; /* Rx 512-1023 bytes frames   */
 148         u32 hnc_rx_1522_frames; /* Rx 1024-1522 bytes frames  */
 149         u32 hnc_rx_9022_frames; /* Rx 1523-9022 bytes frames  */
 150         u32 hnc_tx_64_frames;   /* Tx 64-bytes frames         */
 151         u32 hnc_tx_127_frames;  /* Tx 65-127 bytes frames     */
 152         u32 hnc_tx_255_frames;  /* Tx 128-255 bytes frames    */
 153         u32 hnc_tx_511_frames;  /* Tx 256-511 bytes frames    */
 154         u32 hnc_tx_1023_frames; /* Tx 512-1023 bytes frames   */
 155         u32 hnc_tx_1522_frames; /* Tx 1024-1522 bytes frames  */
 156         u32 hnc_tx_9022_frames; /* Tx 1523-9022 bytes frames  */
 157         u32 hnc_rx_valid_bytes; /* Rx valid bytes             */
 158         u32 hnc_rx_runt_pkts;   /* Rx error runt packets      */
 159         u32 hnc_rx_jabber_pkts; /* Rx error jabber packets    */
 160         u32 ncsi_rx_cmds;       /* Rx NCSI commands           */
 161         u32 ncsi_dropped_cmds;  /* Dropped commands           */
 162         u32 ncsi_cmd_type_errs; /* Command type errors        */
 163         u32 ncsi_cmd_csum_errs; /* Command checksum errors    */
 164         u32 ncsi_rx_pkts;       /* Rx NCSI packets            */
 165         u32 ncsi_tx_pkts;       /* Tx NCSI packets            */
 166         u32 ncsi_tx_aen_pkts;   /* Tx AEN packets             */
 167         u32 pt_tx_pkts;         /* Tx packets                 */
 168         u32 pt_tx_dropped;      /* Tx dropped packets         */
 169         u32 pt_tx_channel_err;  /* Tx channel errors          */
 170         u32 pt_tx_us_err;       /* Tx undersize errors        */
 171         u32 pt_rx_pkts;         /* Rx packets                 */
 172         u32 pt_rx_dropped;      /* Rx dropped packets         */
 173         u32 pt_rx_channel_err;  /* Rx channel errors          */
 174         u32 pt_rx_us_err;       /* Rx undersize errors        */
 175         u32 pt_rx_os_err;       /* Rx oversize errors         */
 176 };
 177
 178 struct ncsi_dev_priv;
 179 struct ncsi_package;
 180
 181 #define NCSI_PACKAGE_SHIFT      5
 182 #define NCSI_PACKAGE_INDEX(c)   (((c) >> NCSI_PACKAGE_SHIFT) & 0x7)
 183 #define NCSI_RESERVED_CHANNEL   0x1f
 184 #define NCSI_CHANNEL_INDEX(c)   ((c) & ((1 << NCSI_PACKAGE_SHIFT) - 1))
 185 #define NCSI_TO_CHANNEL(p, c)   (((p) << NCSI_PACKAGE_SHIFT) | (c))
 186 #define NCSI_MAX_PACKAGE        8
 187 #define NCSI_MAX_CHANNEL        32
 188
 189 struct ncsi_channel {
 190         unsigned char               id;
 191         int                         state;
 192 #define NCSI_CHANNEL_INACTIVE           1
 193 #define NCSI_CHANNEL_ACTIVE             2
 194 #define NCSI_CHANNEL_INVISIBLE          3
 195         bool                        reconfigure_needed;
 196         spinlock_t                  lock;       /* Protect filters etc */
 197         struct ncsi_package         *package;
 198         struct ncsi_channel_version version;
 199         struct ncsi_channel_cap     caps[NCSI_CAP_MAX];
 200         struct ncsi_channel_mode    modes[NCSI_MODE_MAX];
 201         /* Filtering Settings */
 202         struct ncsi_channel_mac_filter  mac_filter;
 203         struct ncsi_channel_vlan_filter vlan_filter;
 204         struct ncsi_channel_stats   stats;
 205         struct {
 206                 struct timer_list   timer;
 207                 bool                enabled;
 208                 unsigned int        state;
 209 #define NCSI_CHANNEL_MONITOR_START      0
 210 #define NCSI_CHANNEL_MONITOR_RETRY      1
 211 #define NCSI_CHANNEL_MONITOR_WAIT       2
 212 #define NCSI_CHANNEL_MONITOR_WAIT_MAX   5
 213         } monitor;
 214         struct list_head            node;
 215         struct list_head            link;
 216 };
 217
 218 struct ncsi_package {
 219         unsigned char        id;          /* NCSI 3-bits package ID */
 220         unsigned char        uuid[16];    /* UUID                   */
 221         struct ncsi_dev_priv *ndp;        /* NCSI device            */
 222         spinlock_t           lock;        /* Protect the package    */
 223         unsigned int         channel_num; /* Number of channels     */
 224         struct list_head     channels;    /* List of chanels        */
 225         struct list_head     node;        /* Form list of packages  */
 226
 227         bool                 multi_channel; /* Enable multiple channels  */
 228         u32                  channel_whitelist; /* Channels to configure */
 229         struct ncsi_channel  *preferred_channel; /* Primary channel      */
 230 };
 231
 232 struct ncsi_request {
 233         unsigned char        id;      /* Request ID - 0 to 255           */
 234         bool                 used;    /* Request that has been assigned  */
 235         unsigned int         flags;   /* NCSI request property           */
 236 #define NCSI_REQ_FLAG_EVENT_DRIVEN      1
 237 #define NCSI_REQ_FLAG_NETLINK_DRIVEN    2
 238         struct ncsi_dev_priv *ndp;    /* Associated NCSI device          */
 239         struct sk_buff       *cmd;    /* Associated NCSI command packet  */
 240         struct sk_buff       *rsp;    /* Associated NCSI response packet */
 241         struct timer_list    timer;   /* Timer on waiting for response   */
 242         bool                 enabled; /* Time has been enabled or not    */
 243         u32                  snd_seq;     /* netlink sending sequence number */
 244         u32                  snd_portid;  /* netlink portid of sender        */
 245         struct nlmsghdr      nlhdr;       /* netlink message header          */
 246 };
 247
 248 enum {
 249         ncsi_dev_state_major            = 0xff00,
 250         ncsi_dev_state_minor            = 0x00ff,
 251         ncsi_dev_state_probe_deselect   = 0x0201,
 252         ncsi_dev_state_probe_package,
 253         ncsi_dev_state_probe_channel,
 254         ncsi_dev_state_probe_cis,
 255         ncsi_dev_state_probe_gvi,
 256         ncsi_dev_state_probe_gc,
 257         ncsi_dev_state_probe_gls,
 258         ncsi_dev_state_probe_dp,
 259         ncsi_dev_state_config_sp        = 0x0301,
 260         ncsi_dev_state_config_cis,
 261         ncsi_dev_state_config_oem_gma,
 262         ncsi_dev_state_config_clear_vids,
 263         ncsi_dev_state_config_svf,
 264         ncsi_dev_state_config_ev,
 265         ncsi_dev_state_config_sma,
 266         ncsi_dev_state_config_ebf,
 267 #if IS_ENABLED(CONFIG_IPV6)
 268         ncsi_dev_state_config_egmf,
 269 #endif
 270         ncsi_dev_state_config_ecnt,
 271         ncsi_dev_state_config_ec,
 272         ncsi_dev_state_config_ae,
 273         ncsi_dev_state_config_gls,
 274         ncsi_dev_state_config_done,
 275         ncsi_dev_state_suspend_select   = 0x0401,
 276         ncsi_dev_state_suspend_gls,
 277         ncsi_dev_state_suspend_dcnt,
 278         ncsi_dev_state_suspend_dc,
 279         ncsi_dev_state_suspend_deselect,
 280         ncsi_dev_state_suspend_done
 281 };
 282
 283 struct vlan_vid {
 284         struct list_head list;
 285         __be16 proto;
 286         u16 vid;
 287 };
 288
 289 struct ncsi_dev_priv {
 290         struct ncsi_dev     ndev;            /* Associated NCSI device     */
 291         unsigned int        flags;           /* NCSI device flags          */
 292 #define NCSI_DEV_PROBED         1            /* Finalized NCSI topology    */
 293 #define NCSI_DEV_HWA            2            /* Enabled HW arbitration     */
 294 #define NCSI_DEV_RESHUFFLE      4
 295 #define NCSI_DEV_RESET          8            /* Reset state of NC          */
 296         unsigned int        gma_flag;        /* OEM GMA flag               */
 297         spinlock_t          lock;            /* Protect the NCSI device    */
 298 #if IS_ENABLED(CONFIG_IPV6)
 299         unsigned int        inet6_addr_num;  /* Number of IPv6 addresses   */
 300 #endif
 301         unsigned int        package_probe_id;/* Current ID during probe    */
 302         unsigned int        package_num;     /* Number of packages         */
 303         struct list_head    packages;        /* List of packages           */
 304         struct ncsi_channel *hot_channel;    /* Channel was ever active    */
 305         struct ncsi_request requests[256];   /* Request table              */
 306         unsigned int        request_id;      /* Last used request ID       */
 307 #define NCSI_REQ_START_IDX      1
 308         unsigned int        pending_req_num; /* Number of pending requests */
 309         struct ncsi_package *active_package; /* Currently handled package  */
 310         struct ncsi_channel *active_channel; /* Currently handled channel  */
 311         struct list_head    channel_queue;   /* Config queue of channels   */
 312         struct work_struct  work;            /* For channel management     */
 313         struct packet_type  ptype;           /* NCSI packet Rx handler     */
 314         struct list_head    node;            /* Form NCSI device list      */
 315 #define NCSI_MAX_VLAN_VIDS      15
 316         struct list_head    vlan_vids;       /* List of active VLAN IDs */
 317
 318         bool                multi_package;   /* Enable multiple packages   */
 319         u32                 package_whitelist; /* Packages to configure    */
 320 };
 321
 322 struct ncsi_cmd_arg {
 323         struct ncsi_dev_priv *ndp;        /* Associated NCSI device        */
 324         unsigned char        type;        /* Command in the NCSI packet    */
 325         unsigned char        id;          /* Request ID (sequence number)  */
 326         unsigned char        package;     /* Destination package ID        */
 327         unsigned char        channel;     /* Detination channel ID or 0x1f */
 328         unsigned short       payload;     /* Command packet payload length */
 329         unsigned int         req_flags;   /* NCSI request properties       */
 330         union {
 331                 unsigned char  bytes[16]; /* Command packet specific data  */
 332                 unsigned short words[8];
 333                 unsigned int   dwords[4];
 334         };
 335         unsigned char        *data;       /* NCSI OEM data                 */
 336         struct genl_info     *info;       /* Netlink information           */
 337 };
 338
 339 extern struct list_head ncsi_dev_list;
 340 extern spinlock_t ncsi_dev_lock;
 341
 342 #define TO_NCSI_DEV_PRIV(nd) \
 343         container_of(nd, struct ncsi_dev_priv, ndev)
 344 #define NCSI_FOR_EACH_DEV(ndp) \
 345         list_for_each_entry_rcu(ndp, &ncsi_dev_list, node)
 346 #define NCSI_FOR_EACH_PACKAGE(ndp, np) \
 347         list_for_each_entry_rcu(np, &ndp->packages, node)
 348 #define NCSI_FOR_EACH_CHANNEL(np, nc) \
 349         list_for_each_entry_rcu(nc, &np->channels, node)
 350
 351 /* Resources */
 352 int ncsi_reset_dev(struct ncsi_dev *nd);
 353 void ncsi_start_channel_monitor(struct ncsi_channel *nc);
 354 void ncsi_stop_channel_monitor(struct ncsi_channel *nc);
 355 struct ncsi_channel *ncsi_find_channel(struct ncsi_package *np,
 356                                        unsigned char id);
 357 struct ncsi_channel *ncsi_add_channel(struct ncsi_package *np,
 358                                       unsigned char id);
 359 struct ncsi_package *ncsi_find_package(struct ncsi_dev_priv *ndp,
 360                                        unsigned char id);
 361 struct ncsi_package *ncsi_add_package(struct ncsi_dev_priv *ndp,
 362                                       unsigned char id);
 363 void ncsi_remove_package(struct ncsi_package *np);
 364 void ncsi_find_package_and_channel(struct ncsi_dev_priv *ndp,
 365                                    unsigned char id,
 366                                    struct ncsi_package **np,
 367                                    struct ncsi_channel **nc);
 368 struct ncsi_request *ncsi_alloc_request(struct ncsi_dev_priv *ndp,
 369                                         unsigned int req_flags);
 370 void ncsi_free_request(struct ncsi_request *nr);
 371 struct ncsi_dev *ncsi_find_dev(struct net_device *dev);
 372 int ncsi_process_next_channel(struct ncsi_dev_priv *ndp);
 373 bool ncsi_channel_has_link(struct ncsi_channel *channel);
 374 bool ncsi_channel_is_last(struct ncsi_dev_priv *ndp,
 375                           struct ncsi_channel *channel);
 376 int ncsi_update_tx_channel(struct ncsi_dev_priv *ndp,
 377                            struct ncsi_package *np,
 378                            struct ncsi_channel *disable,
 379                            struct ncsi_channel *enable);
 380
 381 /* Packet handlers */
 382 u32 ncsi_calculate_checksum(unsigned char *data, int len);
 383 int ncsi_xmit_cmd(struct ncsi_cmd_arg *nca);
 384 int ncsi_rcv_rsp(struct sk_buff *skb, struct net_device *dev,
 385                  struct packet_type *pt, struct net_device *orig_dev);
 386 int ncsi_aen_handler(struct ncsi_dev_priv *ndp, struct sk_buff *skb);
 387
 388 #endif /* __NCSI_INTERNAL_H__ */