drivers/s390/net/qeth_core.h

   1 /*
   2  *    Copyright IBM Corp. 2007
   3  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   4  *               Frank Pavlic <fpavlic@de.ibm.com>,
   5  *               Thomas Spatzier <tspat@de.ibm.com>,
   6  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   7  */
   8
   9 #ifndef __QETH_CORE_H__
  10 #define __QETH_CORE_H__
  11
  12 #include <linux/if.h>
  13 #include <linux/if_arp.h>
  14 #include <linux/etherdevice.h>
  15 #include <linux/if_vlan.h>
  16 #include <linux/ctype.h>
  17 #include <linux/in6.h>
  18 #include <linux/bitops.h>
  19 #include <linux/seq_file.h>
  20 #include <linux/ethtool.h>
  21
  22 #include <net/ipv6.h>
  23 #include <net/if_inet6.h>
  24 #include <net/addrconf.h>
  25
  26 #include <asm/debug.h>
  27 #include <asm/qdio.h>
  28 #include <asm/ccwdev.h>
  29 #include <asm/ccwgroup.h>
  30 #include <asm/sysinfo.h>
  31
  32 #include "qeth_core_mpc.h"
  33
  34 /**
  35  * Debug Facility stuff
  36  */
  37 enum qeth_dbf_names {
  38         QETH_DBF_SETUP,
  39         QETH_DBF_MSG,
  40         QETH_DBF_CTRL,
  41         QETH_DBF_INFOS  /* must be last element */
  42 };
  43
  44 struct qeth_dbf_info {
  45         char name[DEBUG_MAX_NAME_LEN];
  46         int pages;
  47         int areas;
  48         int len;
  49         int level;
  50         struct debug_view *view;
  51         debug_info_t *id;
  52 };
  53
  54 #define QETH_DBF_CTRL_LEN 256
  55
  56 #define QETH_DBF_TEXT(name, level, text) \
  57         debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
  58
  59 #define QETH_DBF_HEX(name, level, addr, len) \
  60         debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
  61
  62 #define QETH_DBF_MESSAGE(level, text...) \
  63         debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
  64
  65 #define QETH_DBF_TEXT_(name, level, text...) \
  66         qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
  67
  68 #define QETH_CARD_TEXT(card, level, text) \
  69         debug_text_event(card->debug, level, text)
  70
  71 #define QETH_CARD_HEX(card, level, addr, len) \
  72         debug_event(card->debug, level, (void *)(addr), len)
  73
  74 #define QETH_CARD_MESSAGE(card, text...) \
  75         debug_sprintf_event(card->debug, level, text)
  76
  77 #define QETH_CARD_TEXT_(card, level, text...) \
  78         qeth_dbf_longtext(card->debug, level, text)
  79
  80 #define SENSE_COMMAND_REJECT_BYTE 0
  81 #define SENSE_COMMAND_REJECT_FLAG 0x80
  82 #define SENSE_RESETTING_EVENT_BYTE 1
  83 #define SENSE_RESETTING_EVENT_FLAG 0x80
  84
  85 /*
  86  * Common IO related definitions
  87  */
  88 #define CARD_RDEV(card) card->read.ccwdev
  89 #define CARD_WDEV(card) card->write.ccwdev
  90 #define CARD_DDEV(card) card->data.ccwdev
  91 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
  92 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
  93 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
  94 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
  95 #define CHANNEL_ID(channel) dev_name(&channel->ccwdev->dev)
  96
  97 /**
  98  * card stuff
  99  */
 100 struct qeth_perf_stats {
 101         unsigned int bufs_rec;
 102         unsigned int bufs_sent;
 103
 104         unsigned int skbs_sent_pack;
 105         unsigned int bufs_sent_pack;
 106
 107         unsigned int sc_dp_p;
 108         unsigned int sc_p_dp;
 109         /* qdio_cq_handler: number of times called, time spent in */
 110         __u64 cq_start_time;
 111         unsigned int cq_cnt;
 112         unsigned int cq_time;
 113         /* qdio_input_handler: number of times called, time spent in */
 114         __u64 inbound_start_time;
 115         unsigned int inbound_cnt;
 116         unsigned int inbound_time;
 117         /* qeth_send_packet: number of times called, time spent in */
 118         __u64 outbound_start_time;
 119         unsigned int outbound_cnt;
 120         unsigned int outbound_time;
 121         /* qdio_output_handler: number of times called, time spent in */
 122         __u64 outbound_handler_start_time;
 123         unsigned int outbound_handler_cnt;
 124         unsigned int outbound_handler_time;
 125         /* number of calls to and time spent in do_QDIO for inbound queue */
 126         __u64 inbound_do_qdio_start_time;
 127         unsigned int inbound_do_qdio_cnt;
 128         unsigned int inbound_do_qdio_time;
 129         /* number of calls to and time spent in do_QDIO for outbound queues */
 130         __u64 outbound_do_qdio_start_time;
 131         unsigned int outbound_do_qdio_cnt;
 132         unsigned int outbound_do_qdio_time;
 133         unsigned int large_send_bytes;
 134         unsigned int large_send_cnt;
 135         unsigned int sg_skbs_sent;
 136         unsigned int sg_frags_sent;
 137         /* initial values when measuring starts */
 138         unsigned long initial_rx_packets;
 139         unsigned long initial_tx_packets;
 140         /* inbound scatter gather data */
 141         unsigned int sg_skbs_rx;
 142         unsigned int sg_frags_rx;
 143         unsigned int sg_alloc_page_rx;
 144         unsigned int tx_csum;
 145         unsigned int tx_lin;
 146 };
 147
 148 /* Routing stuff */
 149 struct qeth_routing_info {
 150         enum qeth_routing_types type;
 151 };
 152
 153 /* IPA stuff */
 154 struct qeth_ipa_info {
 155         __u32 supported_funcs;
 156         __u32 enabled_funcs;
 157 };
 158
 159 /* SETBRIDGEPORT stuff */
 160 enum qeth_sbp_roles {
 161         QETH_SBP_ROLE_NONE      = 0,
 162         QETH_SBP_ROLE_PRIMARY   = 1,
 163         QETH_SBP_ROLE_SECONDARY = 2,
 164 };
 165
 166 enum qeth_sbp_states {
 167         QETH_SBP_STATE_INACTIVE = 0,
 168         QETH_SBP_STATE_STANDBY  = 1,
 169         QETH_SBP_STATE_ACTIVE   = 2,
 170 };
 171
 172 #define QETH_SBP_HOST_NOTIFICATION 1
 173
 174 struct qeth_sbp_info {
 175         __u32 supported_funcs;
 176         enum qeth_sbp_roles role;
 177         __u32 hostnotification:1;
 178         __u32 reflect_promisc:1;
 179         __u32 reflect_promisc_primary:1;
 180 };
 181
 182 static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
 183                 enum qeth_ipa_funcs func)
 184 {
 185         return (ipa->supported_funcs & func);
 186 }
 187
 188 static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
 189                 enum qeth_ipa_funcs func)
 190 {
 191         return (ipa->supported_funcs & ipa->enabled_funcs & func);
 192 }
 193
 194 #define qeth_adp_supported(c, f) \
 195         qeth_is_ipa_supported(&c->options.adp, f)
 196 #define qeth_adp_enabled(c, f) \
 197         qeth_is_ipa_enabled(&c->options.adp, f)
 198 #define qeth_is_supported(c, f) \
 199         qeth_is_ipa_supported(&c->options.ipa4, f)
 200 #define qeth_is_enabled(c, f) \
 201         qeth_is_ipa_enabled(&c->options.ipa4, f)
 202 #define qeth_is_supported6(c, f) \
 203         qeth_is_ipa_supported(&c->options.ipa6, f)
 204 #define qeth_is_enabled6(c, f) \
 205         qeth_is_ipa_enabled(&c->options.ipa6, f)
 206 #define qeth_is_ipafunc_supported(c, prot, f) \
 207          ((prot == QETH_PROT_IPV6) ? \
 208                 qeth_is_supported6(c, f) : qeth_is_supported(c, f))
 209 #define qeth_is_ipafunc_enabled(c, prot, f) \
 210          ((prot == QETH_PROT_IPV6) ? \
 211                 qeth_is_enabled6(c, f) : qeth_is_enabled(c, f))
 212
 213 #define QETH_IDX_FUNC_LEVEL_OSD          0x0101
 214 #define QETH_IDX_FUNC_LEVEL_IQD          0x4108
 215
 216 #define QETH_MODELLIST_ARRAY \
 217         {{0x1731, 0x01, 0x1732, QETH_CARD_TYPE_OSD, QETH_MAX_QUEUES, 0}, \
 218          {0x1731, 0x05, 0x1732, QETH_CARD_TYPE_IQD, QETH_MAX_QUEUES, 0x103}, \
 219          {0x1731, 0x06, 0x1732, QETH_CARD_TYPE_OSN, QETH_MAX_QUEUES, 0}, \
 220          {0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSM, QETH_MAX_QUEUES, 0}, \
 221          {0x1731, 0x02, 0x1732, QETH_CARD_TYPE_OSX, QETH_MAX_QUEUES, 0}, \
 222          {0, 0, 0, 0, 0, 0} }
 223 #define QETH_CU_TYPE_IND        0
 224 #define QETH_CU_MODEL_IND       1
 225 #define QETH_DEV_TYPE_IND       2
 226 #define QETH_DEV_MODEL_IND      3
 227 #define QETH_QUEUE_NO_IND       4
 228 #define QETH_MULTICAST_IND      5
 229
 230 #define QETH_REAL_CARD          1
 231 #define QETH_VLAN_CARD          2
 232 #define QETH_BUFSIZE            4096
 233
 234 /**
 235  * some more defs
 236  */
 237 #define QETH_TX_TIMEOUT         100 * HZ
 238 #define QETH_RCD_TIMEOUT        60 * HZ
 239 #define QETH_RECLAIM_WORK_TIME  HZ
 240 #define QETH_HEADER_SIZE        32
 241 #define QETH_MAX_PORTNO         15
 242
 243 /*IPv6 address autoconfiguration stuff*/
 244 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
 245 #define UNIQUE_ID_NOT_BY_CARD           0x10000
 246
 247 /*****************************************************************************/
 248 /* QDIO queue and buffer handling                                            */
 249 /*****************************************************************************/
 250 #define QETH_MAX_QUEUES 4
 251 #define QETH_IN_BUF_SIZE_DEFAULT 65536
 252 #define QETH_IN_BUF_COUNT_DEFAULT 64
 253 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
 254 #define QETH_IN_BUF_COUNT_MIN 8
 255 #define QETH_IN_BUF_COUNT_MAX 128
 256 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
 257 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
 258                  ((card)->qdio.in_buf_pool.buf_count / 2)
 259
 260 /* buffers we have to be behind before we get a PCI */
 261 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
 262 /*enqueued free buffers left before we get a PCI*/
 263 #define QETH_PCI_THRESHOLD_B(card) 0
 264 /*not used unless the microcode gets patched*/
 265 #define QETH_PCI_TIMER_VALUE(card) 3
 266
 267 /* priority queing */
 268 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
 269 #define QETH_DEFAULT_QUEUE    2
 270 #define QETH_NO_PRIO_QUEUEING 0
 271 #define QETH_PRIO_Q_ING_PREC  1
 272 #define QETH_PRIO_Q_ING_TOS   2
 273 #define QETH_PRIO_Q_ING_SKB   3
 274 #define QETH_PRIO_Q_ING_VLAN  4
 275
 276 /* Packing */
 277 #define QETH_LOW_WATERMARK_PACK  2
 278 #define QETH_HIGH_WATERMARK_PACK 5
 279 #define QETH_WATERMARK_PACK_FUZZ 1
 280
 281 #define QETH_IP_HEADER_SIZE 40
 282
 283 /* large receive scatter gather copy break */
 284 #define QETH_RX_SG_CB (PAGE_SIZE >> 1)
 285 #define QETH_RX_PULL_LEN 256
 286
 287 struct qeth_hdr_layer3 {
 288         __u8  id;
 289         __u8  flags;
 290         __u16 inbound_checksum; /*TSO:__u16 seqno */
 291         __u32 token;            /*TSO: __u32 reserved */
 292         __u16 length;
 293         __u8  vlan_prio;
 294         __u8  ext_flags;
 295         __u16 vlan_id;
 296         __u16 frame_offset;
 297         __u8  dest_addr[16];
 298 } __attribute__ ((packed));
 299
 300 struct qeth_hdr_layer2 {
 301         __u8 id;
 302         __u8 flags[3];
 303         __u8 port_no;
 304         __u8 hdr_length;
 305         __u16 pkt_length;
 306         __u16 seq_no;
 307         __u16 vlan_id;
 308         __u32 reserved;
 309         __u8 reserved2[16];
 310 } __attribute__ ((packed));
 311
 312 struct qeth_hdr_osn {
 313         __u8 id;
 314         __u8 reserved;
 315         __u16 seq_no;
 316         __u16 reserved2;
 317         __u16 control_flags;
 318         __u16 pdu_length;
 319         __u8 reserved3[18];
 320         __u32 ccid;
 321 } __attribute__ ((packed));
 322
 323 struct qeth_hdr {
 324         union {
 325                 struct qeth_hdr_layer2 l2;
 326                 struct qeth_hdr_layer3 l3;
 327                 struct qeth_hdr_osn    osn;
 328         } hdr;
 329 } __attribute__ ((packed));
 330
 331 /*TCP Segmentation Offload header*/
 332 struct qeth_hdr_ext_tso {
 333         __u16 hdr_tot_len;
 334         __u8  imb_hdr_no;
 335         __u8  reserved;
 336         __u8  hdr_type;
 337         __u8  hdr_version;
 338         __u16 hdr_len;
 339         __u32 payload_len;
 340         __u16 mss;
 341         __u16 dg_hdr_len;
 342         __u8  padding[16];
 343 } __attribute__ ((packed));
 344
 345 struct qeth_hdr_tso {
 346         struct qeth_hdr hdr;    /*hdr->hdr.l3.xxx*/
 347         struct qeth_hdr_ext_tso ext;
 348 } __attribute__ ((packed));
 349
 350
 351 /* flags for qeth_hdr.flags */
 352 #define QETH_HDR_PASSTHRU 0x10
 353 #define QETH_HDR_IPV6     0x80
 354 #define QETH_HDR_CAST_MASK 0x07
 355 enum qeth_cast_flags {
 356         QETH_CAST_UNICAST   = 0x06,
 357         QETH_CAST_MULTICAST = 0x04,
 358         QETH_CAST_BROADCAST = 0x05,
 359         QETH_CAST_ANYCAST   = 0x07,
 360         QETH_CAST_NOCAST    = 0x00,
 361 };
 362
 363 enum qeth_layer2_frame_flags {
 364         QETH_LAYER2_FLAG_MULTICAST = 0x01,
 365         QETH_LAYER2_FLAG_BROADCAST = 0x02,
 366         QETH_LAYER2_FLAG_UNICAST   = 0x04,
 367         QETH_LAYER2_FLAG_VLAN      = 0x10,
 368 };
 369
 370 enum qeth_header_ids {
 371         QETH_HEADER_TYPE_LAYER3 = 0x01,
 372         QETH_HEADER_TYPE_LAYER2 = 0x02,
 373         QETH_HEADER_TYPE_TSO    = 0x03,
 374         QETH_HEADER_TYPE_OSN    = 0x04,
 375 };
 376 /* flags for qeth_hdr.ext_flags */
 377 #define QETH_HDR_EXT_VLAN_FRAME       0x01
 378 #define QETH_HDR_EXT_TOKEN_ID         0x02
 379 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
 380 #define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
 381 #define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
 382 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
 383 #define QETH_HDR_EXT_UDP              0x40 /*bit off for TCP*/
 384
 385 enum qeth_qdio_buffer_states {
 386         /*
 387          * inbound: read out by driver; owned by hardware in order to be filled
 388          * outbound: owned by driver in order to be filled
 389          */
 390         QETH_QDIO_BUF_EMPTY,
 391         /*
 392          * inbound: filled by hardware; owned by driver in order to be read out
 393          * outbound: filled by driver; owned by hardware in order to be sent
 394          */
 395         QETH_QDIO_BUF_PRIMED,
 396         /*
 397          * inbound: not applicable
 398          * outbound: identified to be pending in TPQ
 399          */
 400         QETH_QDIO_BUF_PENDING,
 401         /*
 402          * inbound: not applicable
 403          * outbound: found in completion queue
 404          */
 405         QETH_QDIO_BUF_IN_CQ,
 406         /*
 407          * inbound: not applicable
 408          * outbound: handled via transfer pending / completion queue
 409          */
 410         QETH_QDIO_BUF_HANDLED_DELAYED,
 411 };
 412
 413 enum qeth_qdio_info_states {
 414         QETH_QDIO_UNINITIALIZED,
 415         QETH_QDIO_ALLOCATED,
 416         QETH_QDIO_ESTABLISHED,
 417         QETH_QDIO_CLEANING
 418 };
 419
 420 struct qeth_buffer_pool_entry {
 421         struct list_head list;
 422         struct list_head init_list;
 423         void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
 424 };
 425
 426 struct qeth_qdio_buffer_pool {
 427         struct list_head entry_list;
 428         int buf_count;
 429 };
 430
 431 struct qeth_qdio_buffer {
 432         struct qdio_buffer *buffer;
 433         /* the buffer pool entry currently associated to this buffer */
 434         struct qeth_buffer_pool_entry *pool_entry;
 435         struct sk_buff *rx_skb;
 436 };
 437
 438 struct qeth_qdio_q {
 439         struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 440         struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
 441         int next_buf_to_init;
 442 };
 443
 444 struct qeth_qdio_out_buffer {
 445         struct qdio_buffer *buffer;
 446         atomic_t state;
 447         int next_element_to_fill;
 448         struct sk_buff_head skb_list;
 449         int is_header[16];
 450
 451         struct qaob *aob;
 452         struct qeth_qdio_out_q *q;
 453         struct qeth_qdio_out_buffer *next_pending;
 454 };
 455
 456 struct qeth_card;
 457
 458 enum qeth_out_q_states {
 459        QETH_OUT_Q_UNLOCKED,
 460        QETH_OUT_Q_LOCKED,
 461        QETH_OUT_Q_LOCKED_FLUSH,
 462 };
 463
 464 struct qeth_qdio_out_q {
 465         struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 466         struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
 467         struct qdio_outbuf_state *bufstates; /* convenience pointer */
 468         int queue_no;
 469         struct qeth_card *card;
 470         atomic_t state;
 471         int do_pack;
 472         /*
 473          * index of buffer to be filled by driver; state EMPTY or PACKING
 474          */
 475         int next_buf_to_fill;
 476         /*
 477          * number of buffers that are currently filled (PRIMED)
 478          * -> these buffers are hardware-owned
 479          */
 480         atomic_t used_buffers;
 481         /* indicates whether PCI flag must be set (or if one is outstanding) */
 482         atomic_t set_pci_flags_count;
 483 };
 484
 485 struct qeth_qdio_info {
 486         atomic_t state;
 487         /* input */
 488         int no_in_queues;
 489         struct qeth_qdio_q *in_q;
 490         struct qeth_qdio_q *c_q;
 491         struct qeth_qdio_buffer_pool in_buf_pool;
 492         struct qeth_qdio_buffer_pool init_pool;
 493         int in_buf_size;
 494
 495         /* output */
 496         int no_out_queues;
 497         struct qeth_qdio_out_q **out_qs;
 498         struct qdio_outbuf_state *out_bufstates;
 499
 500         /* priority queueing */
 501         int do_prio_queueing;
 502         int default_out_queue;
 503 };
 504
 505 enum qeth_send_errors {
 506         QETH_SEND_ERROR_NONE,
 507         QETH_SEND_ERROR_LINK_FAILURE,
 508         QETH_SEND_ERROR_RETRY,
 509         QETH_SEND_ERROR_KICK_IT,
 510 };
 511
 512 #define QETH_ETH_MAC_V4      0x0100 /* like v4 */
 513 #define QETH_ETH_MAC_V6      0x3333 /* like v6 */
 514 /* tr mc mac is longer, but that will be enough to detect mc frames */
 515 #define QETH_TR_MAC_NC       0xc000 /* non-canonical */
 516 #define QETH_TR_MAC_C        0x0300 /* canonical */
 517
 518 #define DEFAULT_ADD_HHLEN 0
 519 #define MAX_ADD_HHLEN 1024
 520
 521 /**
 522  * buffer stuff for read channel
 523  */
 524 #define QETH_CMD_BUFFER_NO      8
 525
 526 /**
 527  *  channel state machine
 528  */
 529 enum qeth_channel_states {
 530         CH_STATE_UP,
 531         CH_STATE_DOWN,
 532         CH_STATE_ACTIVATING,
 533         CH_STATE_HALTED,
 534         CH_STATE_STOPPED,
 535         CH_STATE_RCD,
 536         CH_STATE_RCD_DONE,
 537 };
 538 /**
 539  * card state machine
 540  */
 541 enum qeth_card_states {
 542         CARD_STATE_DOWN,
 543         CARD_STATE_HARDSETUP,
 544         CARD_STATE_SOFTSETUP,
 545         CARD_STATE_UP,
 546         CARD_STATE_RECOVER,
 547 };
 548
 549 /**
 550  * Protocol versions
 551  */
 552 enum qeth_prot_versions {
 553         QETH_PROT_IPV4 = 0x0004,
 554         QETH_PROT_IPV6 = 0x0006,
 555 };
 556
 557 enum qeth_ip_types {
 558         QETH_IP_TYPE_NORMAL,
 559         QETH_IP_TYPE_VIPA,
 560         QETH_IP_TYPE_RXIP,
 561         QETH_IP_TYPE_DEL_ALL_MC,
 562 };
 563
 564 enum qeth_cmd_buffer_state {
 565         BUF_STATE_FREE,
 566         BUF_STATE_LOCKED,
 567         BUF_STATE_PROCESSED,
 568 };
 569
 570 enum qeth_cq {
 571         QETH_CQ_DISABLED = 0,
 572         QETH_CQ_ENABLED = 1,
 573         QETH_CQ_NOTAVAILABLE = 2,
 574 };
 575
 576 struct qeth_ipato {
 577         int enabled;
 578         int invert4;
 579         int invert6;
 580         struct list_head entries;
 581 };
 582
 583 struct qeth_channel;
 584
 585 struct qeth_cmd_buffer {
 586         enum qeth_cmd_buffer_state state;
 587         struct qeth_channel *channel;
 588         unsigned char *data;
 589         int rc;
 590         void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
 591 };
 592
 593 /**
 594  * definition of a qeth channel, used for read and write
 595  */
 596 struct qeth_channel {
 597         enum qeth_channel_states state;
 598         struct ccw1 ccw;
 599         spinlock_t iob_lock;
 600         wait_queue_head_t wait_q;
 601         struct ccw_device *ccwdev;
 602 /*command buffer for control data*/
 603         struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
 604         atomic_t irq_pending;
 605         int io_buf_no;
 606         int buf_no;
 607 };
 608
 609 /**
 610  *  OSA card related definitions
 611  */
 612 struct qeth_token {
 613         __u32 issuer_rm_w;
 614         __u32 issuer_rm_r;
 615         __u32 cm_filter_w;
 616         __u32 cm_filter_r;
 617         __u32 cm_connection_w;
 618         __u32 cm_connection_r;
 619         __u32 ulp_filter_w;
 620         __u32 ulp_filter_r;
 621         __u32 ulp_connection_w;
 622         __u32 ulp_connection_r;
 623 };
 624
 625 struct qeth_seqno {
 626         __u32 trans_hdr;
 627         __u32 pdu_hdr;
 628         __u32 pdu_hdr_ack;
 629         __u16 ipa;
 630         __u32 pkt_seqno;
 631 };
 632
 633 struct qeth_reply {
 634         struct list_head list;
 635         wait_queue_head_t wait_q;
 636         int (*callback)(struct qeth_card *, struct qeth_reply *,
 637                 unsigned long);
 638         u32 seqno;
 639         unsigned long offset;
 640         atomic_t received;
 641         int rc;
 642         void *param;
 643         struct qeth_card *card;
 644         atomic_t refcnt;
 645 };
 646
 647
 648 struct qeth_card_blkt {
 649         int time_total;
 650         int inter_packet;
 651         int inter_packet_jumbo;
 652 };
 653
 654 #define QETH_BROADCAST_WITH_ECHO    0x01
 655 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
 656 #define QETH_LAYER2_MAC_READ        0x01
 657 #define QETH_LAYER2_MAC_REGISTERED  0x02
 658 struct qeth_card_info {
 659         unsigned short unit_addr2;
 660         unsigned short cula;
 661         unsigned short chpid;
 662         __u16 func_level;
 663         char mcl_level[QETH_MCL_LENGTH + 1];
 664         int guestlan;
 665         int mac_bits;
 666         int portname_required;
 667         int portno;
 668         char portname[9];
 669         enum qeth_card_types type;
 670         enum qeth_link_types link_type;
 671         int is_multicast_different;
 672         int initial_mtu;
 673         int max_mtu;
 674         int broadcast_capable;
 675         int unique_id;
 676         struct qeth_card_blkt blkt;
 677         __u32 csum_mask;
 678         __u32 tx_csum_mask;
 679         enum qeth_ipa_promisc_modes promisc_mode;
 680         __u32 diagass_support;
 681         __u32 hwtrap;
 682 };
 683
 684 struct qeth_card_options {
 685         struct qeth_routing_info route4;
 686         struct qeth_ipa_info ipa4;
 687         struct qeth_ipa_info adp; /*Adapter parameters*/
 688         struct qeth_routing_info route6;
 689         struct qeth_ipa_info ipa6;
 690         struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
 691         int fake_broadcast;
 692         int add_hhlen;
 693         int layer2;
 694         int performance_stats;
 695         int rx_sg_cb;
 696         enum qeth_ipa_isolation_modes isolation;
 697         enum qeth_ipa_isolation_modes prev_isolation;
 698         int sniffer;
 699         enum qeth_cq cq;
 700         char hsuid[9];
 701 };
 702
 703 /*
 704  * thread bits for qeth_card thread masks
 705  */
 706 enum qeth_threads {
 707         QETH_RECOVER_THREAD = 1,
 708 };
 709
 710 struct qeth_osn_info {
 711         int (*assist_cb)(struct net_device *dev, void *data);
 712         int (*data_cb)(struct sk_buff *skb);
 713 };
 714
 715 enum qeth_discipline_id {
 716         QETH_DISCIPLINE_LAYER3 = 0,
 717         QETH_DISCIPLINE_LAYER2 = 1,
 718 };
 719
 720 struct qeth_discipline {
 721         void (*start_poll)(struct ccw_device *, int, unsigned long);
 722         qdio_handler_t *input_handler;
 723         qdio_handler_t *output_handler;
 724         int (*recover)(void *ptr);
 725         int (*setup) (struct ccwgroup_device *);
 726         void (*remove) (struct ccwgroup_device *);
 727         int (*set_online) (struct ccwgroup_device *);
 728         int (*set_offline) (struct ccwgroup_device *);
 729         void (*shutdown)(struct ccwgroup_device *);
 730         int (*prepare) (struct ccwgroup_device *);
 731         void (*complete) (struct ccwgroup_device *);
 732         int (*freeze)(struct ccwgroup_device *);
 733         int (*thaw) (struct ccwgroup_device *);
 734         int (*restore)(struct ccwgroup_device *);
 735         int (*control_event_handler)(struct qeth_card *card,
 736                                         struct qeth_ipa_cmd *cmd);
 737 };
 738
 739 struct qeth_vlan_vid {
 740         struct list_head list;
 741         unsigned short vid;
 742 };
 743
 744 struct qeth_mc_mac {
 745         struct list_head list;
 746         __u8 mc_addr[MAX_ADDR_LEN];
 747         unsigned char mc_addrlen;
 748         int is_vmac;
 749 };
 750
 751 struct qeth_rx {
 752         int b_count;
 753         int b_index;
 754         struct qdio_buffer_element *b_element;
 755         int e_offset;
 756         int qdio_err;
 757 };
 758
 759 struct carrier_info {
 760         __u8  card_type;
 761         __u16 port_mode;
 762         __u32 port_speed;
 763 };
 764
 765 struct qeth_switch_info {
 766         __u32 capabilities;
 767         __u32 settings;
 768 };
 769
 770 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
 771
 772 struct qeth_card {
 773         struct list_head list;
 774         enum qeth_card_states state;
 775         int lan_online;
 776         spinlock_t lock;
 777         struct ccwgroup_device *gdev;
 778         struct qeth_channel read;
 779         struct qeth_channel write;
 780         struct qeth_channel data;
 781
 782         struct net_device *dev;
 783         struct net_device_stats stats;
 784
 785         struct qeth_card_info info;
 786         struct qeth_token token;
 787         struct qeth_seqno seqno;
 788         struct qeth_card_options options;
 789
 790         wait_queue_head_t wait_q;
 791         spinlock_t vlanlock;
 792         spinlock_t mclock;
 793         unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 794         struct list_head vid_list;
 795         struct list_head mc_list;
 796         struct work_struct kernel_thread_starter;
 797         spinlock_t thread_mask_lock;
 798         unsigned long thread_start_mask;
 799         unsigned long thread_allowed_mask;
 800         unsigned long thread_running_mask;
 801         struct task_struct *recovery_task;
 802         spinlock_t ip_lock;
 803         struct list_head ip_list;
 804         struct list_head *ip_tbd_list;
 805         struct qeth_ipato ipato;
 806         struct list_head cmd_waiter_list;
 807         /* QDIO buffer handling */
 808         struct qeth_qdio_info qdio;
 809         struct qeth_perf_stats perf_stats;
 810         int read_or_write_problem;
 811         struct qeth_osn_info osn_info;
 812         struct qeth_discipline *discipline;
 813         atomic_t force_alloc_skb;
 814         struct service_level qeth_service_level;
 815         struct qdio_ssqd_desc ssqd;
 816         debug_info_t *debug;
 817         struct mutex conf_mutex;
 818         struct mutex discipline_mutex;
 819         struct napi_struct napi;
 820         struct qeth_rx rx;
 821         struct delayed_work buffer_reclaim_work;
 822         int reclaim_index;
 823         struct work_struct close_dev_work;
 824 };
 825
 826 struct qeth_card_list_struct {
 827         struct list_head list;
 828         rwlock_t rwlock;
 829 };
 830
 831 struct qeth_trap_id {
 832         __u16 lparnr;
 833         char vmname[8];
 834         __u8 chpid;
 835         __u8 ssid;
 836         __u16 devno;
 837 } __packed;
 838
 839 /*some helper functions*/
 840 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
 841
 842 static inline int qeth_get_micros(void)
 843 {
 844         return (int) (get_tod_clock() >> 12);
 845 }
 846
 847 static inline int qeth_get_ip_version(struct sk_buff *skb)
 848 {
 849         __be16 *p = &((struct ethhdr *)skb->data)->h_proto;
 850
 851         if (*p == ETH_P_8021Q)
 852                 p += 2;
 853         switch (*p) {
 854         case ETH_P_IPV6:
 855                 return 6;
 856         case ETH_P_IP:
 857                 return 4;
 858         default:
 859                 return 0;
 860         }
 861 }
 862
 863 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
 864                 struct qeth_buffer_pool_entry *entry)
 865 {
 866         list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
 867 }
 868
 869 static inline int qeth_is_diagass_supported(struct qeth_card *card,
 870                 enum qeth_diags_cmds cmd)
 871 {
 872         return card->info.diagass_support & (__u32)cmd;
 873 }
 874
 875 extern struct qeth_discipline qeth_l2_discipline;
 876 extern struct qeth_discipline qeth_l3_discipline;
 877 extern const struct attribute_group *qeth_generic_attr_groups[];
 878 extern const struct attribute_group *qeth_osn_attr_groups[];
 879 extern struct workqueue_struct *qeth_wq;
 880
 881 int qeth_card_hw_is_reachable(struct qeth_card *);
 882 const char *qeth_get_cardname_short(struct qeth_card *);
 883 int qeth_realloc_buffer_pool(struct qeth_card *, int);
 884 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
 885 void qeth_core_free_discipline(struct qeth_card *);
 886
 887 /* exports for qeth discipline device drivers */
 888 extern struct qeth_card_list_struct qeth_core_card_list;
 889 extern struct kmem_cache *qeth_core_header_cache;
 890 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
 891
 892 void qeth_set_recovery_task(struct qeth_card *);
 893 void qeth_clear_recovery_task(struct qeth_card *);
 894 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
 895 int qeth_threads_running(struct qeth_card *, unsigned long);
 896 int qeth_wait_for_threads(struct qeth_card *, unsigned long);
 897 int qeth_do_run_thread(struct qeth_card *, unsigned long);
 898 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
 899 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
 900 int qeth_core_hardsetup_card(struct qeth_card *);
 901 void qeth_print_status_message(struct qeth_card *);
 902 int qeth_init_qdio_queues(struct qeth_card *);
 903 int qeth_send_startlan(struct qeth_card *);
 904 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
 905                   int (*reply_cb)
 906                   (struct qeth_card *, struct qeth_reply *, unsigned long),
 907                   void *);
 908 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *,
 909                         enum qeth_ipa_cmds, enum qeth_prot_versions);
 910 int qeth_query_setadapterparms(struct qeth_card *);
 911 int qeth_check_qdio_errors(struct qeth_card *, struct qdio_buffer *,
 912                 unsigned int, const char *);
 913 void qeth_queue_input_buffer(struct qeth_card *, int);
 914 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
 915                 struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
 916                 struct qeth_hdr **);
 917 void qeth_schedule_recovery(struct qeth_card *);
 918 void qeth_qdio_start_poll(struct ccw_device *, int, unsigned long);
 919 void qeth_qdio_input_handler(struct ccw_device *,
 920                 unsigned int, unsigned int, int,
 921                 int, unsigned long);
 922 void qeth_qdio_output_handler(struct ccw_device *, unsigned int,
 923                         int, int, int, unsigned long);
 924 void qeth_clear_ipacmd_list(struct qeth_card *);
 925 int qeth_qdio_clear_card(struct qeth_card *, int);
 926 void qeth_clear_working_pool_list(struct qeth_card *);
 927 void qeth_clear_cmd_buffers(struct qeth_channel *);
 928 void qeth_clear_qdio_buffers(struct qeth_card *);
 929 void qeth_setadp_promisc_mode(struct qeth_card *);
 930 struct net_device_stats *qeth_get_stats(struct net_device *);
 931 int qeth_change_mtu(struct net_device *, int);
 932 int qeth_setadpparms_change_macaddr(struct qeth_card *);
 933 void qeth_tx_timeout(struct net_device *);
 934 void qeth_prepare_control_data(struct qeth_card *, int,
 935                                 struct qeth_cmd_buffer *);
 936 void qeth_release_buffer(struct qeth_channel *, struct qeth_cmd_buffer *);
 937 void qeth_prepare_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, char);
 938 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *);
 939 int qeth_mdio_read(struct net_device *, int, int);
 940 int qeth_snmp_command(struct qeth_card *, char __user *);
 941 int qeth_query_oat_command(struct qeth_card *, char __user *);
 942 int qeth_query_switch_attributes(struct qeth_card *card,
 943                                   struct qeth_switch_info *sw_info);
 944 int qeth_send_control_data(struct qeth_card *, int, struct qeth_cmd_buffer *,
 945         int (*reply_cb)(struct qeth_card *, struct qeth_reply*, unsigned long),
 946         void *reply_param);
 947 int qeth_bridgeport_query_ports(struct qeth_card *card,
 948         enum qeth_sbp_roles *role, enum qeth_sbp_states *state);
 949 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role);
 950 int qeth_bridgeport_an_set(struct qeth_card *card, int enable);
 951 int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int);
 952 int qeth_get_elements_no(struct qeth_card *, struct sk_buff *, int);
 953 int qeth_get_elements_for_frags(struct sk_buff *);
 954 int qeth_do_send_packet_fast(struct qeth_card *, struct qeth_qdio_out_q *,
 955                         struct sk_buff *, struct qeth_hdr *, int, int, int);
 956 int qeth_do_send_packet(struct qeth_card *, struct qeth_qdio_out_q *,
 957                     struct sk_buff *, struct qeth_hdr *, int);
 958 int qeth_core_get_sset_count(struct net_device *, int);
 959 void qeth_core_get_ethtool_stats(struct net_device *,
 960                                 struct ethtool_stats *, u64 *);
 961 void qeth_core_get_strings(struct net_device *, u32, u8 *);
 962 void qeth_core_get_drvinfo(struct net_device *, struct ethtool_drvinfo *);
 963 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
 964 int qeth_core_ethtool_get_settings(struct net_device *, struct ethtool_cmd *);
 965 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback);
 966 int qeth_hdr_chk_and_bounce(struct sk_buff *, struct qeth_hdr **, int);
 967 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
 968 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
 969 int qeth_query_ipassists(struct qeth_card *, enum qeth_prot_versions prot);
 970 void qeth_trace_features(struct qeth_card *);
 971 void qeth_close_dev(struct qeth_card *);
 972
 973 /* exports for OSN */
 974 int qeth_osn_assist(struct net_device *, void *, int);
 975 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
 976                 int (*assist_cb)(struct net_device *, void *),
 977                 int (*data_cb)(struct sk_buff *));
 978 void qeth_osn_deregister(struct net_device *);
 979
 980 #endif /* __QETH_CORE_H__ */