drivers/s390/net/qeth_core.h

   1 /* SPDX-License-Identifier: GPL-2.0 */
   2 /*
   3  *    Copyright IBM Corp. 2007
   4  *    Author(s): Utz Bacher <utz.bacher@de.ibm.com>,
   5  *               Frank Pavlic <fpavlic@de.ibm.com>,
   6  *               Thomas Spatzier <tspat@de.ibm.com>,
   7  *               Frank Blaschka <frank.blaschka@de.ibm.com>
   8  */
   9
  10 #ifndef __QETH_CORE_H__
  11 #define __QETH_CORE_H__
  12
  13 #include <linux/if.h>
  14 #include <linux/if_arp.h>
  15 #include <linux/etherdevice.h>
  16 #include <linux/if_vlan.h>
  17 #include <linux/ctype.h>
  18 #include <linux/in6.h>
  19 #include <linux/bitops.h>
  20 #include <linux/seq_file.h>
  21 #include <linux/ethtool.h>
  22 #include <linux/hashtable.h>
  23 #include <linux/ip.h>
  24 #include <linux/refcount.h>
  25
  26 #include <net/ipv6.h>
  27 #include <net/if_inet6.h>
  28 #include <net/addrconf.h>
  29
  30 #include <asm/debug.h>
  31 #include <asm/qdio.h>
  32 #include <asm/ccwdev.h>
  33 #include <asm/ccwgroup.h>
  34 #include <asm/sysinfo.h>
  35
  36 #include "qeth_core_mpc.h"
  37
  38 /**
  39  * Debug Facility stuff
  40  */
  41 enum qeth_dbf_names {
  42         QETH_DBF_SETUP,
  43         QETH_DBF_MSG,
  44         QETH_DBF_CTRL,
  45         QETH_DBF_INFOS  /* must be last element */
  46 };
  47
  48 struct qeth_dbf_info {
  49         char name[DEBUG_MAX_NAME_LEN];
  50         int pages;
  51         int areas;
  52         int len;
  53         int level;
  54         struct debug_view *view;
  55         debug_info_t *id;
  56 };
  57
  58 #define QETH_DBF_CTRL_LEN 256
  59
  60 #define QETH_DBF_TEXT(name, level, text) \
  61         debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
  62
  63 #define QETH_DBF_HEX(name, level, addr, len) \
  64         debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
  65
  66 #define QETH_DBF_MESSAGE(level, text...) \
  67         debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
  68
  69 #define QETH_DBF_TEXT_(name, level, text...) \
  70         qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
  71
  72 #define QETH_CARD_TEXT(card, level, text) \
  73         debug_text_event(card->debug, level, text)
  74
  75 #define QETH_CARD_HEX(card, level, addr, len) \
  76         debug_event(card->debug, level, (void *)(addr), len)
  77
  78 #define QETH_CARD_MESSAGE(card, text...) \
  79         debug_sprintf_event(card->debug, level, text)
  80
  81 #define QETH_CARD_TEXT_(card, level, text...) \
  82         qeth_dbf_longtext(card->debug, level, text)
  83
  84 #define SENSE_COMMAND_REJECT_BYTE 0
  85 #define SENSE_COMMAND_REJECT_FLAG 0x80
  86 #define SENSE_RESETTING_EVENT_BYTE 1
  87 #define SENSE_RESETTING_EVENT_FLAG 0x80
  88
  89 /*
  90  * Common IO related definitions
  91  */
  92 #define CARD_RDEV(card) card->read.ccwdev
  93 #define CARD_WDEV(card) card->write.ccwdev
  94 #define CARD_DDEV(card) card->data.ccwdev
  95 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
  96 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
  97 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
  98 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
  99 #define CHANNEL_ID(channel) dev_name(&channel->ccwdev->dev)
 100
 101 /**
 102  * card stuff
 103  */
 104 struct qeth_perf_stats {
 105         unsigned int bufs_rec;
 106         unsigned int bufs_sent;
 107
 108         unsigned int skbs_sent_pack;
 109         unsigned int bufs_sent_pack;
 110
 111         unsigned int sc_dp_p;
 112         unsigned int sc_p_dp;
 113         /* qdio_cq_handler: number of times called, time spent in */
 114         __u64 cq_start_time;
 115         unsigned int cq_cnt;
 116         unsigned int cq_time;
 117         /* qdio_input_handler: number of times called, time spent in */
 118         __u64 inbound_start_time;
 119         unsigned int inbound_cnt;
 120         unsigned int inbound_time;
 121         /* qeth_send_packet: number of times called, time spent in */
 122         __u64 outbound_start_time;
 123         unsigned int outbound_cnt;
 124         unsigned int outbound_time;
 125         /* qdio_output_handler: number of times called, time spent in */
 126         __u64 outbound_handler_start_time;
 127         unsigned int outbound_handler_cnt;
 128         unsigned int outbound_handler_time;
 129         /* number of calls to and time spent in do_QDIO for inbound queue */
 130         __u64 inbound_do_qdio_start_time;
 131         unsigned int inbound_do_qdio_cnt;
 132         unsigned int inbound_do_qdio_time;
 133         /* number of calls to and time spent in do_QDIO for outbound queues */
 134         __u64 outbound_do_qdio_start_time;
 135         unsigned int outbound_do_qdio_cnt;
 136         unsigned int outbound_do_qdio_time;
 137         unsigned int large_send_bytes;
 138         unsigned int large_send_cnt;
 139         unsigned int sg_skbs_sent;
 140         unsigned int sg_frags_sent;
 141         /* initial values when measuring starts */
 142         unsigned long initial_rx_packets;
 143         unsigned long initial_tx_packets;
 144         /* inbound scatter gather data */
 145         unsigned int sg_skbs_rx;
 146         unsigned int sg_frags_rx;
 147         unsigned int sg_alloc_page_rx;
 148         unsigned int tx_csum;
 149         unsigned int tx_lin;
 150         unsigned int tx_linfail;
 151         unsigned int rx_csum;
 152 };
 153
 154 /* Routing stuff */
 155 struct qeth_routing_info {
 156         enum qeth_routing_types type;
 157 };
 158
 159 /* IPA stuff */
 160 struct qeth_ipa_info {
 161         __u32 supported_funcs;
 162         __u32 enabled_funcs;
 163 };
 164
 165 /* SETBRIDGEPORT stuff */
 166 enum qeth_sbp_roles {
 167         QETH_SBP_ROLE_NONE      = 0,
 168         QETH_SBP_ROLE_PRIMARY   = 1,
 169         QETH_SBP_ROLE_SECONDARY = 2,
 170 };
 171
 172 enum qeth_sbp_states {
 173         QETH_SBP_STATE_INACTIVE = 0,
 174         QETH_SBP_STATE_STANDBY  = 1,
 175         QETH_SBP_STATE_ACTIVE   = 2,
 176 };
 177
 178 #define QETH_SBP_HOST_NOTIFICATION 1
 179
 180 struct qeth_sbp_info {
 181         __u32 supported_funcs;
 182         enum qeth_sbp_roles role;
 183         __u32 hostnotification:1;
 184         __u32 reflect_promisc:1;
 185         __u32 reflect_promisc_primary:1;
 186 };
 187
 188 struct qeth_vnicc_info {
 189         /* supported/currently configured VNICCs; updated in IPA exchanges */
 190         u32 sup_chars;
 191         u32 cur_chars;
 192         /* supported commands: bitmasks which VNICCs support respective cmd */
 193         u32 set_char_sup;
 194         u32 getset_timeout_sup;
 195         /* timeout value for the learning characteristic */
 196         u32 learning_timeout;
 197         /* characteristics wanted/configured by user */
 198         u32 wanted_chars;
 199         /* has user explicitly enabled rx_bcast while online? */
 200         bool rx_bcast_enabled;
 201 };
 202
 203 static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
 204                 enum qeth_ipa_funcs func)
 205 {
 206         return (ipa->supported_funcs & func);
 207 }
 208
 209 static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
 210                 enum qeth_ipa_funcs func)
 211 {
 212         return (ipa->supported_funcs & ipa->enabled_funcs & func);
 213 }
 214
 215 #define qeth_adp_supported(c, f) \
 216         qeth_is_ipa_supported(&c->options.adp, f)
 217 #define qeth_adp_enabled(c, f) \
 218         qeth_is_ipa_enabled(&c->options.adp, f)
 219 #define qeth_is_supported(c, f) \
 220         qeth_is_ipa_supported(&c->options.ipa4, f)
 221 #define qeth_is_enabled(c, f) \
 222         qeth_is_ipa_enabled(&c->options.ipa4, f)
 223 #define qeth_is_supported6(c, f) \
 224         qeth_is_ipa_supported(&c->options.ipa6, f)
 225 #define qeth_is_enabled6(c, f) \
 226         qeth_is_ipa_enabled(&c->options.ipa6, f)
 227 #define qeth_is_ipafunc_supported(c, prot, f) \
 228          ((prot == QETH_PROT_IPV6) ? \
 229                 qeth_is_supported6(c, f) : qeth_is_supported(c, f))
 230 #define qeth_is_ipafunc_enabled(c, prot, f) \
 231          ((prot == QETH_PROT_IPV6) ? \
 232                 qeth_is_enabled6(c, f) : qeth_is_enabled(c, f))
 233
 234 #define QETH_IDX_FUNC_LEVEL_OSD          0x0101
 235 #define QETH_IDX_FUNC_LEVEL_IQD          0x4108
 236
 237 #define QETH_BUFSIZE            4096
 238
 239 /**
 240  * some more defs
 241  */
 242 #define QETH_TX_TIMEOUT         100 * HZ
 243 #define QETH_RCD_TIMEOUT        60 * HZ
 244 #define QETH_RECLAIM_WORK_TIME  HZ
 245 #define QETH_MAX_PORTNO         15
 246
 247 /*IPv6 address autoconfiguration stuff*/
 248 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
 249 #define UNIQUE_ID_NOT_BY_CARD           0x10000
 250
 251 /*****************************************************************************/
 252 /* QDIO queue and buffer handling                                            */
 253 /*****************************************************************************/
 254 #define QETH_MAX_QUEUES 4
 255 #define QETH_IN_BUF_SIZE_DEFAULT 65536
 256 #define QETH_IN_BUF_COUNT_DEFAULT 64
 257 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
 258 #define QETH_IN_BUF_COUNT_MIN 8
 259 #define QETH_IN_BUF_COUNT_MAX 128
 260 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
 261 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
 262                  ((card)->qdio.in_buf_pool.buf_count / 2)
 263
 264 /* buffers we have to be behind before we get a PCI */
 265 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
 266 /*enqueued free buffers left before we get a PCI*/
 267 #define QETH_PCI_THRESHOLD_B(card) 0
 268 /*not used unless the microcode gets patched*/
 269 #define QETH_PCI_TIMER_VALUE(card) 3
 270
 271 /* priority queing */
 272 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
 273 #define QETH_DEFAULT_QUEUE    2
 274 #define QETH_NO_PRIO_QUEUEING 0
 275 #define QETH_PRIO_Q_ING_PREC  1
 276 #define QETH_PRIO_Q_ING_TOS   2
 277 #define QETH_PRIO_Q_ING_SKB   3
 278 #define QETH_PRIO_Q_ING_VLAN  4
 279
 280 /* Packing */
 281 #define QETH_LOW_WATERMARK_PACK  2
 282 #define QETH_HIGH_WATERMARK_PACK 5
 283 #define QETH_WATERMARK_PACK_FUZZ 1
 284
 285 /* large receive scatter gather copy break */
 286 #define QETH_RX_SG_CB (PAGE_SIZE >> 1)
 287 #define QETH_RX_PULL_LEN 256
 288
 289 struct qeth_hdr_layer3 {
 290         __u8  id;
 291         __u8  flags;
 292         __u16 inbound_checksum; /*TSO:__u16 seqno */
 293         __u32 token;            /*TSO: __u32 reserved */
 294         __u16 length;
 295         __u8  vlan_prio;
 296         __u8  ext_flags;
 297         __u16 vlan_id;
 298         __u16 frame_offset;
 299         union {
 300                 /* TX: */
 301                 u8 ipv6_addr[16];
 302                 struct ipv4 {
 303                         u8 res[12];
 304                         u32 addr;
 305                 } ipv4;
 306                 /* RX: */
 307                 struct rx {
 308                         u8 res1[2];
 309                         u8 src_mac[6];
 310                         u8 res2[4];
 311                         u16 vlan_id;
 312                         u8 res3[2];
 313                 } rx;
 314         } next_hop;
 315 };
 316
 317 struct qeth_hdr_layer2 {
 318         __u8 id;
 319         __u8 flags[3];
 320         __u8 port_no;
 321         __u8 hdr_length;
 322         __u16 pkt_length;
 323         __u16 seq_no;
 324         __u16 vlan_id;
 325         __u32 reserved;
 326         __u8 reserved2[16];
 327 } __attribute__ ((packed));
 328
 329 struct qeth_hdr_osn {
 330         __u8 id;
 331         __u8 reserved;
 332         __u16 seq_no;
 333         __u16 reserved2;
 334         __u16 control_flags;
 335         __u16 pdu_length;
 336         __u8 reserved3[18];
 337         __u32 ccid;
 338 } __attribute__ ((packed));
 339
 340 struct qeth_hdr {
 341         union {
 342                 struct qeth_hdr_layer2 l2;
 343                 struct qeth_hdr_layer3 l3;
 344                 struct qeth_hdr_osn    osn;
 345         } hdr;
 346 } __attribute__ ((packed));
 347
 348 /*TCP Segmentation Offload header*/
 349 struct qeth_hdr_ext_tso {
 350         __u16 hdr_tot_len;
 351         __u8  imb_hdr_no;
 352         __u8  reserved;
 353         __u8  hdr_type;
 354         __u8  hdr_version;
 355         __u16 hdr_len;
 356         __u32 payload_len;
 357         __u16 mss;
 358         __u16 dg_hdr_len;
 359         __u8  padding[16];
 360 } __attribute__ ((packed));
 361
 362 struct qeth_hdr_tso {
 363         struct qeth_hdr hdr;    /*hdr->hdr.l3.xxx*/
 364         struct qeth_hdr_ext_tso ext;
 365 } __attribute__ ((packed));
 366
 367
 368 /* flags for qeth_hdr.flags */
 369 #define QETH_HDR_PASSTHRU 0x10
 370 #define QETH_HDR_IPV6     0x80
 371 #define QETH_HDR_CAST_MASK 0x07
 372 enum qeth_cast_flags {
 373         QETH_CAST_UNICAST   = 0x06,
 374         QETH_CAST_MULTICAST = 0x04,
 375         QETH_CAST_BROADCAST = 0x05,
 376         QETH_CAST_ANYCAST   = 0x07,
 377         QETH_CAST_NOCAST    = 0x00,
 378 };
 379
 380 enum qeth_layer2_frame_flags {
 381         QETH_LAYER2_FLAG_MULTICAST = 0x01,
 382         QETH_LAYER2_FLAG_BROADCAST = 0x02,
 383         QETH_LAYER2_FLAG_UNICAST   = 0x04,
 384         QETH_LAYER2_FLAG_VLAN      = 0x10,
 385 };
 386
 387 enum qeth_header_ids {
 388         QETH_HEADER_TYPE_LAYER3 = 0x01,
 389         QETH_HEADER_TYPE_LAYER2 = 0x02,
 390         QETH_HEADER_TYPE_TSO    = 0x03,
 391         QETH_HEADER_TYPE_OSN    = 0x04,
 392 };
 393 /* flags for qeth_hdr.ext_flags */
 394 #define QETH_HDR_EXT_VLAN_FRAME       0x01
 395 #define QETH_HDR_EXT_TOKEN_ID         0x02
 396 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
 397 #define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
 398 #define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
 399 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
 400 #define QETH_HDR_EXT_UDP              0x40 /*bit off for TCP*/
 401
 402 enum qeth_qdio_buffer_states {
 403         /*
 404          * inbound: read out by driver; owned by hardware in order to be filled
 405          * outbound: owned by driver in order to be filled
 406          */
 407         QETH_QDIO_BUF_EMPTY,
 408         /*
 409          * inbound: filled by hardware; owned by driver in order to be read out
 410          * outbound: filled by driver; owned by hardware in order to be sent
 411          */
 412         QETH_QDIO_BUF_PRIMED,
 413         /*
 414          * inbound: not applicable
 415          * outbound: identified to be pending in TPQ
 416          */
 417         QETH_QDIO_BUF_PENDING,
 418         /*
 419          * inbound: not applicable
 420          * outbound: found in completion queue
 421          */
 422         QETH_QDIO_BUF_IN_CQ,
 423         /*
 424          * inbound: not applicable
 425          * outbound: handled via transfer pending / completion queue
 426          */
 427         QETH_QDIO_BUF_HANDLED_DELAYED,
 428 };
 429
 430 enum qeth_qdio_info_states {
 431         QETH_QDIO_UNINITIALIZED,
 432         QETH_QDIO_ALLOCATED,
 433         QETH_QDIO_ESTABLISHED,
 434         QETH_QDIO_CLEANING
 435 };
 436
 437 struct qeth_buffer_pool_entry {
 438         struct list_head list;
 439         struct list_head init_list;
 440         void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
 441 };
 442
 443 struct qeth_qdio_buffer_pool {
 444         struct list_head entry_list;
 445         int buf_count;
 446 };
 447
 448 struct qeth_qdio_buffer {
 449         struct qdio_buffer *buffer;
 450         /* the buffer pool entry currently associated to this buffer */
 451         struct qeth_buffer_pool_entry *pool_entry;
 452         struct sk_buff *rx_skb;
 453 };
 454
 455 struct qeth_qdio_q {
 456         struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 457         struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
 458         int next_buf_to_init;
 459 };
 460
 461 struct qeth_qdio_out_buffer {
 462         struct qdio_buffer *buffer;
 463         atomic_t state;
 464         int next_element_to_fill;
 465         struct sk_buff_head skb_list;
 466         int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER];
 467
 468         struct qaob *aob;
 469         struct qeth_qdio_out_q *q;
 470         struct qeth_qdio_out_buffer *next_pending;
 471 };
 472
 473 struct qeth_card;
 474
 475 enum qeth_out_q_states {
 476        QETH_OUT_Q_UNLOCKED,
 477        QETH_OUT_Q_LOCKED,
 478        QETH_OUT_Q_LOCKED_FLUSH,
 479 };
 480
 481 struct qeth_qdio_out_q {
 482         struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 483         struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
 484         struct qdio_outbuf_state *bufstates; /* convenience pointer */
 485         int queue_no;
 486         struct qeth_card *card;
 487         atomic_t state;
 488         int do_pack;
 489         /*
 490          * index of buffer to be filled by driver; state EMPTY or PACKING
 491          */
 492         int next_buf_to_fill;
 493         /*
 494          * number of buffers that are currently filled (PRIMED)
 495          * -> these buffers are hardware-owned
 496          */
 497         atomic_t used_buffers;
 498         /* indicates whether PCI flag must be set (or if one is outstanding) */
 499         atomic_t set_pci_flags_count;
 500 };
 501
 502 struct qeth_qdio_info {
 503         atomic_t state;
 504         /* input */
 505         int no_in_queues;
 506         struct qeth_qdio_q *in_q;
 507         struct qeth_qdio_q *c_q;
 508         struct qeth_qdio_buffer_pool in_buf_pool;
 509         struct qeth_qdio_buffer_pool init_pool;
 510         int in_buf_size;
 511
 512         /* output */
 513         int no_out_queues;
 514         struct qeth_qdio_out_q **out_qs;
 515         struct qdio_outbuf_state *out_bufstates;
 516
 517         /* priority queueing */
 518         int do_prio_queueing;
 519         int default_out_queue;
 520 };
 521
 522 /**
 523  * buffer stuff for read channel
 524  */
 525 #define QETH_CMD_BUFFER_NO      8
 526
 527 /**
 528  *  channel state machine
 529  */
 530 enum qeth_channel_states {
 531         CH_STATE_UP,
 532         CH_STATE_DOWN,
 533         CH_STATE_ACTIVATING,
 534         CH_STATE_HALTED,
 535         CH_STATE_STOPPED,
 536         CH_STATE_RCD,
 537         CH_STATE_RCD_DONE,
 538 };
 539 /**
 540  * card state machine
 541  */
 542 enum qeth_card_states {
 543         CARD_STATE_DOWN,
 544         CARD_STATE_HARDSETUP,
 545         CARD_STATE_SOFTSETUP,
 546         CARD_STATE_UP,
 547         CARD_STATE_RECOVER,
 548 };
 549
 550 /**
 551  * Protocol versions
 552  */
 553 enum qeth_prot_versions {
 554         QETH_PROT_IPV4 = 0x0004,
 555         QETH_PROT_IPV6 = 0x0006,
 556 };
 557
 558 enum qeth_cmd_buffer_state {
 559         BUF_STATE_FREE,
 560         BUF_STATE_LOCKED,
 561 };
 562
 563 enum qeth_cq {
 564         QETH_CQ_DISABLED = 0,
 565         QETH_CQ_ENABLED = 1,
 566         QETH_CQ_NOTAVAILABLE = 2,
 567 };
 568
 569 struct qeth_ipato {
 570         bool enabled;
 571         bool invert4;
 572         bool invert6;
 573         struct list_head entries;
 574 };
 575
 576 struct qeth_channel;
 577
 578 struct qeth_cmd_buffer {
 579         enum qeth_cmd_buffer_state state;
 580         struct qeth_channel *channel;
 581         unsigned char *data;
 582         int rc;
 583         void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
 584 };
 585
 586 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob)
 587 {
 588         return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
 589 }
 590
 591 /**
 592  * definition of a qeth channel, used for read and write
 593  */
 594 struct qeth_channel {
 595         enum qeth_channel_states state;
 596         struct ccw1 ccw;
 597         spinlock_t iob_lock;
 598         wait_queue_head_t wait_q;
 599         struct ccw_device *ccwdev;
 600 /*command buffer for control data*/
 601         struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
 602         atomic_t irq_pending;
 603         int io_buf_no;
 604 };
 605
 606 /**
 607  *  OSA card related definitions
 608  */
 609 struct qeth_token {
 610         __u32 issuer_rm_w;
 611         __u32 issuer_rm_r;
 612         __u32 cm_filter_w;
 613         __u32 cm_filter_r;
 614         __u32 cm_connection_w;
 615         __u32 cm_connection_r;
 616         __u32 ulp_filter_w;
 617         __u32 ulp_filter_r;
 618         __u32 ulp_connection_w;
 619         __u32 ulp_connection_r;
 620 };
 621
 622 struct qeth_seqno {
 623         __u32 trans_hdr;
 624         __u32 pdu_hdr;
 625         __u32 pdu_hdr_ack;
 626         __u16 ipa;
 627         __u32 pkt_seqno;
 628 };
 629
 630 struct qeth_reply {
 631         struct list_head list;
 632         wait_queue_head_t wait_q;
 633         int (*callback)(struct qeth_card *, struct qeth_reply *,
 634                 unsigned long);
 635         u32 seqno;
 636         unsigned long offset;
 637         atomic_t received;
 638         int rc;
 639         void *param;
 640         struct qeth_card *card;
 641         refcount_t refcnt;
 642 };
 643
 644 struct qeth_card_blkt {
 645         int time_total;
 646         int inter_packet;
 647         int inter_packet_jumbo;
 648 };
 649
 650 #define QETH_BROADCAST_WITH_ECHO    0x01
 651 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
 652 #define QETH_LAYER2_MAC_READ        0x01
 653 #define QETH_LAYER2_MAC_REGISTERED  0x02
 654 struct qeth_card_info {
 655         unsigned short unit_addr2;
 656         unsigned short cula;
 657         unsigned short chpid;
 658         __u16 func_level;
 659         char mcl_level[QETH_MCL_LENGTH + 1];
 660         int guestlan;
 661         int mac_bits;
 662         int portno;
 663         enum qeth_card_types type;
 664         enum qeth_link_types link_type;
 665         int is_multicast_different;
 666         int initial_mtu;
 667         int max_mtu;
 668         int broadcast_capable;
 669         int unique_id;
 670         bool layer_enforced;
 671         struct qeth_card_blkt blkt;
 672         enum qeth_ipa_promisc_modes promisc_mode;
 673         __u32 diagass_support;
 674         __u32 hwtrap;
 675 };
 676
 677 struct qeth_card_options {
 678         struct qeth_routing_info route4;
 679         struct qeth_ipa_info ipa4;
 680         struct qeth_ipa_info adp; /*Adapter parameters*/
 681         struct qeth_routing_info route6;
 682         struct qeth_ipa_info ipa6;
 683         struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
 684         struct qeth_vnicc_info vnicc; /* VNICC options */
 685         int fake_broadcast;
 686         int layer2;
 687         int performance_stats;
 688         int rx_sg_cb;
 689         enum qeth_ipa_isolation_modes isolation;
 690         enum qeth_ipa_isolation_modes prev_isolation;
 691         int sniffer;
 692         enum qeth_cq cq;
 693         char hsuid[9];
 694 };
 695
 696 /*
 697  * thread bits for qeth_card thread masks
 698  */
 699 enum qeth_threads {
 700         QETH_RECOVER_THREAD = 1,
 701 };
 702
 703 struct qeth_osn_info {
 704         int (*assist_cb)(struct net_device *dev, void *data);
 705         int (*data_cb)(struct sk_buff *skb);
 706 };
 707
 708 enum qeth_discipline_id {
 709         QETH_DISCIPLINE_UNDETERMINED = -1,
 710         QETH_DISCIPLINE_LAYER3 = 0,
 711         QETH_DISCIPLINE_LAYER2 = 1,
 712 };
 713
 714 struct qeth_discipline {
 715         const struct device_type *devtype;
 716         int (*process_rx_buffer)(struct qeth_card *card, int budget, int *done);
 717         int (*recover)(void *ptr);
 718         int (*setup) (struct ccwgroup_device *);
 719         void (*remove) (struct ccwgroup_device *);
 720         int (*set_online) (struct ccwgroup_device *);
 721         int (*set_offline) (struct ccwgroup_device *);
 722         int (*freeze)(struct ccwgroup_device *);
 723         int (*thaw) (struct ccwgroup_device *);
 724         int (*restore)(struct ccwgroup_device *);
 725         int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd);
 726         int (*control_event_handler)(struct qeth_card *card,
 727                                         struct qeth_ipa_cmd *cmd);
 728 };
 729
 730 struct qeth_vlan_vid {
 731         struct list_head list;
 732         unsigned short vid;
 733 };
 734
 735 enum qeth_addr_disposition {
 736         QETH_DISP_ADDR_DELETE = 0,
 737         QETH_DISP_ADDR_DO_NOTHING = 1,
 738         QETH_DISP_ADDR_ADD = 2,
 739 };
 740
 741 struct qeth_rx {
 742         int b_count;
 743         int b_index;
 744         struct qdio_buffer_element *b_element;
 745         int e_offset;
 746         int qdio_err;
 747 };
 748
 749 struct carrier_info {
 750         __u8  card_type;
 751         __u16 port_mode;
 752         __u32 port_speed;
 753 };
 754
 755 struct qeth_switch_info {
 756         __u32 capabilities;
 757         __u32 settings;
 758 };
 759
 760 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
 761
 762 struct qeth_card {
 763         struct list_head list;
 764         enum qeth_card_states state;
 765         int lan_online;
 766         spinlock_t lock;
 767         struct ccwgroup_device *gdev;
 768         struct qeth_channel read;
 769         struct qeth_channel write;
 770         struct qeth_channel data;
 771
 772         struct net_device *dev;
 773         struct net_device_stats stats;
 774
 775         struct qeth_card_info info;
 776         struct qeth_token token;
 777         struct qeth_seqno seqno;
 778         struct qeth_card_options options;
 779
 780         wait_queue_head_t wait_q;
 781         spinlock_t mclock;
 782         unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 783         struct mutex vid_list_mutex;            /* vid_list */
 784         struct list_head vid_list;
 785         DECLARE_HASHTABLE(mac_htable, 4);
 786         DECLARE_HASHTABLE(ip_htable, 4);
 787         DECLARE_HASHTABLE(ip_mc_htable, 4);
 788         struct work_struct kernel_thread_starter;
 789         spinlock_t thread_mask_lock;
 790         unsigned long thread_start_mask;
 791         unsigned long thread_allowed_mask;
 792         unsigned long thread_running_mask;
 793         struct task_struct *recovery_task;
 794         spinlock_t ip_lock;
 795         struct qeth_ipato ipato;
 796         struct list_head cmd_waiter_list;
 797         /* QDIO buffer handling */
 798         struct qeth_qdio_info qdio;
 799         struct qeth_perf_stats perf_stats;
 800         int read_or_write_problem;
 801         struct qeth_osn_info osn_info;
 802         struct qeth_discipline *discipline;
 803         atomic_t force_alloc_skb;
 804         struct service_level qeth_service_level;
 805         struct qdio_ssqd_desc ssqd;
 806         debug_info_t *debug;
 807         struct mutex conf_mutex;
 808         struct mutex discipline_mutex;
 809         struct napi_struct napi;
 810         struct qeth_rx rx;
 811         struct delayed_work buffer_reclaim_work;
 812         int reclaim_index;
 813         struct work_struct close_dev_work;
 814 };
 815
 816 struct qeth_card_list_struct {
 817         struct list_head list;
 818         rwlock_t rwlock;
 819 };
 820
 821 struct qeth_trap_id {
 822         __u16 lparnr;
 823         char vmname[8];
 824         __u8 chpid;
 825         __u8 ssid;
 826         __u16 devno;
 827 } __packed;
 828
 829 /*some helper functions*/
 830 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
 831
 832 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf,
 833                                           unsigned int elements)
 834 {
 835         unsigned int i;
 836
 837         for (i = 0; i < elements; i++)
 838                 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element));
 839         buf->element[14].sflags = 0;
 840         buf->element[15].sflags = 0;
 841 }
 842
 843 /**
 844  * qeth_get_elements_for_range() -      find number of SBALEs to cover range.
 845  * @start:                              Start of the address range.
 846  * @end:                                Address after the end of the range.
 847  *
 848  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
 849  * the specified address range.
 850  */
 851 static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
 852 {
 853         return PFN_UP(end) - PFN_DOWN(start);
 854 }
 855
 856 static inline int qeth_get_micros(void)
 857 {
 858         return (int) (get_tod_clock() >> 12);
 859 }
 860
 861 static inline int qeth_get_ip_version(struct sk_buff *skb)
 862 {
 863         struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
 864         __be16 prot = veth->h_vlan_proto;
 865
 866         if (prot == htons(ETH_P_8021Q))
 867                 prot = veth->h_vlan_encapsulated_proto;
 868
 869         switch (prot) {
 870         case htons(ETH_P_IPV6):
 871                 return 6;
 872         case htons(ETH_P_IP):
 873                 return 4;
 874         default:
 875                 return 0;
 876         }
 877 }
 878
 879 static inline void qeth_rx_csum(struct qeth_card *card, struct sk_buff *skb,
 880                                 u8 flags)
 881 {
 882         if ((card->dev->features & NETIF_F_RXCSUM) &&
 883             (flags & QETH_HDR_EXT_CSUM_TRANSP_REQ)) {
 884                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 885                 if (card->options.performance_stats)
 886                         card->perf_stats.rx_csum++;
 887         } else {
 888                 skb->ip_summed = CHECKSUM_NONE;
 889         }
 890 }
 891
 892 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv)
 893 {
 894         *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
 895         if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) ||
 896             (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP))
 897                 *flags |= QETH_HDR_EXT_UDP;
 898         if (ipv == 4) {
 899                 /* some HW requires combined L3+L4 csum offload: */
 900                 *flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
 901                 ip_hdr(skb)->check = 0;
 902         }
 903 }
 904
 905 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
 906                 struct qeth_buffer_pool_entry *entry)
 907 {
 908         list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
 909 }
 910
 911 static inline int qeth_is_diagass_supported(struct qeth_card *card,
 912                 enum qeth_diags_cmds cmd)
 913 {
 914         return card->info.diagass_support & (__u32)cmd;
 915 }
 916
 917 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
 918                                       enum qeth_ipa_funcs ipa_func,
 919                                       u16 cmd_code, long data,
 920                                       enum qeth_prot_versions prot);
 921 /* IPv4 variant */
 922 static inline int qeth_send_simple_setassparms(struct qeth_card *card,
 923                                                enum qeth_ipa_funcs ipa_func,
 924                                                u16 cmd_code, long data)
 925 {
 926         return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
 927                                                  data, QETH_PROT_IPV4);
 928 }
 929
 930 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card,
 931                                                   enum qeth_ipa_funcs ipa_func,
 932                                                   u16 cmd_code, long data)
 933 {
 934         return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
 935                                                  data, QETH_PROT_IPV6);
 936 }
 937
 938 extern struct qeth_discipline qeth_l2_discipline;
 939 extern struct qeth_discipline qeth_l3_discipline;
 940 extern const struct attribute_group *qeth_generic_attr_groups[];
 941 extern const struct attribute_group *qeth_osn_attr_groups[];
 942 extern const struct attribute_group qeth_device_attr_group;
 943 extern const struct attribute_group qeth_device_blkt_group;
 944 extern const struct device_type qeth_generic_devtype;
 945 extern struct workqueue_struct *qeth_wq;
 946
 947 int qeth_card_hw_is_reachable(struct qeth_card *);
 948 const char *qeth_get_cardname_short(struct qeth_card *);
 949 int qeth_realloc_buffer_pool(struct qeth_card *, int);
 950 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
 951 void qeth_core_free_discipline(struct qeth_card *);
 952
 953 /* exports for qeth discipline device drivers */
 954 extern struct qeth_card_list_struct qeth_core_card_list;
 955 extern struct kmem_cache *qeth_core_header_cache;
 956 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
 957
 958 void qeth_set_recovery_task(struct qeth_card *);
 959 void qeth_clear_recovery_task(struct qeth_card *);
 960 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
 961 int qeth_threads_running(struct qeth_card *, unsigned long);
 962 int qeth_wait_for_threads(struct qeth_card *, unsigned long);
 963 int qeth_do_run_thread(struct qeth_card *, unsigned long);
 964 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
 965 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
 966 int qeth_core_hardsetup_card(struct qeth_card *);
 967 void qeth_print_status_message(struct qeth_card *);
 968 int qeth_init_qdio_queues(struct qeth_card *);
 969 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
 970                   int (*reply_cb)
 971                   (struct qeth_card *, struct qeth_reply *, unsigned long),
 972                   void *);
 973 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *,
 974                         enum qeth_ipa_cmds, enum qeth_prot_versions);
 975 int qeth_query_setadapterparms(struct qeth_card *);
 976 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
 977                 struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
 978                 struct qeth_hdr **);
 979 void qeth_schedule_recovery(struct qeth_card *);
 980 int qeth_poll(struct napi_struct *napi, int budget);
 981 void qeth_clear_ipacmd_list(struct qeth_card *);
 982 int qeth_qdio_clear_card(struct qeth_card *, int);
 983 void qeth_clear_working_pool_list(struct qeth_card *);
 984 void qeth_clear_cmd_buffers(struct qeth_channel *);
 985 void qeth_clear_qdio_buffers(struct qeth_card *);
 986 void qeth_setadp_promisc_mode(struct qeth_card *);
 987 struct net_device_stats *qeth_get_stats(struct net_device *);
 988 int qeth_change_mtu(struct net_device *, int);
 989 int qeth_setadpparms_change_macaddr(struct qeth_card *);
 990 void qeth_tx_timeout(struct net_device *);
 991 void qeth_prepare_control_data(struct qeth_card *, int,
 992                                 struct qeth_cmd_buffer *);
 993 void qeth_release_buffer(struct qeth_channel *, struct qeth_cmd_buffer *);
 994 void qeth_prepare_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *, char);
 995 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *);
 996 int qeth_query_switch_attributes(struct qeth_card *card,
 997                                   struct qeth_switch_info *sw_info);
 998 int qeth_send_control_data(struct qeth_card *, int, struct qeth_cmd_buffer *,
 999         int (*reply_cb)(struct qeth_card *, struct qeth_reply*, unsigned long),
1000         void *reply_param);
1001 int qeth_bridgeport_query_ports(struct qeth_card *card,
1002         enum qeth_sbp_roles *role, enum qeth_sbp_states *state);
1003 int qeth_bridgeport_setrole(struct qeth_card *card, enum qeth_sbp_roles role);
1004 int qeth_bridgeport_an_set(struct qeth_card *card, int enable);
1005 int qeth_get_priority_queue(struct qeth_card *, struct sk_buff *, int, int);
1006 int qeth_get_elements_no(struct qeth_card *card, struct sk_buff *skb,
1007                          int extra_elems, int data_offset);
1008 int qeth_get_elements_for_frags(struct sk_buff *);
1009 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
1010                              struct qeth_hdr *hdr, unsigned int offset,
1011                              unsigned int hd_len);
1012 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
1013                         struct sk_buff *skb, struct qeth_hdr *hdr,
1014                         unsigned int offset, unsigned int hd_len,
1015                         int elements_needed);
1016 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
1017 int qeth_core_get_sset_count(struct net_device *, int);
1018 void qeth_core_get_ethtool_stats(struct net_device *,
1019                                 struct ethtool_stats *, u64 *);
1020 void qeth_core_get_strings(struct net_device *, u32, u8 *);
1021 void qeth_core_get_drvinfo(struct net_device *, struct ethtool_drvinfo *);
1022 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
1023 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
1024                                          struct ethtool_link_ksettings *cmd);
1025 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback);
1026 int qeth_hdr_chk_and_bounce(struct sk_buff *, struct qeth_hdr **, int);
1027 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
1028 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
1029 int qeth_query_ipassists(struct qeth_card *, enum qeth_prot_versions prot);
1030 void qeth_trace_features(struct qeth_card *);
1031 void qeth_close_dev(struct qeth_card *);
1032 int qeth_send_setassparms(struct qeth_card *, struct qeth_cmd_buffer *, __u16,
1033                           long,
1034                           int (*reply_cb)(struct qeth_card *,
1035                                           struct qeth_reply *, unsigned long),
1036                           void *);
1037 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
1038 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *,
1039                                                  enum qeth_ipa_funcs,
1040                                                  __u16, __u16,
1041                                                  enum qeth_prot_versions);
1042 int qeth_set_features(struct net_device *, netdev_features_t);
1043 void qeth_enable_hw_features(struct net_device *dev);
1044 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
1045 netdev_features_t qeth_features_check(struct sk_buff *skb,
1046                                       struct net_device *dev,
1047                                       netdev_features_t features);
1048 int qeth_vm_request_mac(struct qeth_card *card);
1049 int qeth_push_hdr(struct sk_buff *skb, struct qeth_hdr **hdr, unsigned int len);
1050
1051 /* exports for OSN */
1052 int qeth_osn_assist(struct net_device *, void *, int);
1053 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
1054                 int (*assist_cb)(struct net_device *, void *),
1055                 int (*data_cb)(struct sk_buff *));
1056 void qeth_osn_deregister(struct net_device *);
1057
1058 #endif /* __QETH_CORE_H__ */