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 #include <linux/workqueue.h>
  26
  27 #include <net/ipv6.h>
  28 #include <net/if_inet6.h>
  29 #include <net/addrconf.h>
  30
  31 #include <asm/debug.h>
  32 #include <asm/qdio.h>
  33 #include <asm/ccwdev.h>
  34 #include <asm/ccwgroup.h>
  35 #include <asm/sysinfo.h>
  36
  37 #include "qeth_core_mpc.h"
  38
  39 /**
  40  * Debug Facility stuff
  41  */
  42 enum qeth_dbf_names {
  43         QETH_DBF_SETUP,
  44         QETH_DBF_MSG,
  45         QETH_DBF_CTRL,
  46         QETH_DBF_INFOS  /* must be last element */
  47 };
  48
  49 struct qeth_dbf_info {
  50         char name[DEBUG_MAX_NAME_LEN];
  51         int pages;
  52         int areas;
  53         int len;
  54         int level;
  55         struct debug_view *view;
  56         debug_info_t *id;
  57 };
  58
  59 #define QETH_DBF_CTRL_LEN 256
  60
  61 #define QETH_DBF_TEXT(name, level, text) \
  62         debug_text_event(qeth_dbf[QETH_DBF_##name].id, level, text)
  63
  64 #define QETH_DBF_HEX(name, level, addr, len) \
  65         debug_event(qeth_dbf[QETH_DBF_##name].id, level, (void *)(addr), len)
  66
  67 #define QETH_DBF_MESSAGE(level, text...) \
  68         debug_sprintf_event(qeth_dbf[QETH_DBF_MSG].id, level, text)
  69
  70 #define QETH_DBF_TEXT_(name, level, text...) \
  71         qeth_dbf_longtext(qeth_dbf[QETH_DBF_##name].id, level, text)
  72
  73 #define QETH_CARD_TEXT(card, level, text) \
  74         debug_text_event(card->debug, level, text)
  75
  76 #define QETH_CARD_HEX(card, level, addr, len) \
  77         debug_event(card->debug, level, (void *)(addr), len)
  78
  79 #define QETH_CARD_MESSAGE(card, text...) \
  80         debug_sprintf_event(card->debug, level, text)
  81
  82 #define QETH_CARD_TEXT_(card, level, text...) \
  83         qeth_dbf_longtext(card->debug, level, text)
  84
  85 #define SENSE_COMMAND_REJECT_BYTE 0
  86 #define SENSE_COMMAND_REJECT_FLAG 0x80
  87 #define SENSE_RESETTING_EVENT_BYTE 1
  88 #define SENSE_RESETTING_EVENT_FLAG 0x80
  89
  90 /*
  91  * Common IO related definitions
  92  */
  93 #define CARD_RDEV(card) card->read.ccwdev
  94 #define CARD_WDEV(card) card->write.ccwdev
  95 #define CARD_DDEV(card) card->data.ccwdev
  96 #define CARD_BUS_ID(card) dev_name(&card->gdev->dev)
  97 #define CARD_RDEV_ID(card) dev_name(&card->read.ccwdev->dev)
  98 #define CARD_WDEV_ID(card) dev_name(&card->write.ccwdev->dev)
  99 #define CARD_DDEV_ID(card) dev_name(&card->data.ccwdev->dev)
 100 #define CHANNEL_ID(channel) dev_name(&channel->ccwdev->dev)
 101
 102 /**
 103  * card stuff
 104  */
 105 struct qeth_perf_stats {
 106         unsigned int bufs_rec;
 107         unsigned int bufs_sent;
 108         unsigned int buf_elements_sent;
 109
 110         unsigned int skbs_sent_pack;
 111         unsigned int bufs_sent_pack;
 112
 113         unsigned int sc_dp_p;
 114         unsigned int sc_p_dp;
 115         /* qdio_cq_handler: number of times called, time spent in */
 116         __u64 cq_start_time;
 117         unsigned int cq_cnt;
 118         unsigned int cq_time;
 119         /* qdio_input_handler: number of times called, time spent in */
 120         __u64 inbound_start_time;
 121         unsigned int inbound_cnt;
 122         unsigned int inbound_time;
 123         /* qeth_send_packet: number of times called, time spent in */
 124         __u64 outbound_start_time;
 125         unsigned int outbound_cnt;
 126         unsigned int outbound_time;
 127         /* qdio_output_handler: number of times called, time spent in */
 128         __u64 outbound_handler_start_time;
 129         unsigned int outbound_handler_cnt;
 130         unsigned int outbound_handler_time;
 131         /* number of calls to and time spent in do_QDIO for inbound queue */
 132         __u64 inbound_do_qdio_start_time;
 133         unsigned int inbound_do_qdio_cnt;
 134         unsigned int inbound_do_qdio_time;
 135         /* number of calls to and time spent in do_QDIO for outbound queues */
 136         __u64 outbound_do_qdio_start_time;
 137         unsigned int outbound_do_qdio_cnt;
 138         unsigned int outbound_do_qdio_time;
 139         unsigned int large_send_bytes;
 140         unsigned int large_send_cnt;
 141         unsigned int sg_skbs_sent;
 142         /* initial values when measuring starts */
 143         unsigned long initial_rx_packets;
 144         unsigned long initial_tx_packets;
 145         /* inbound scatter gather data */
 146         unsigned int sg_skbs_rx;
 147         unsigned int sg_frags_rx;
 148         unsigned int sg_alloc_page_rx;
 149         unsigned int tx_csum;
 150         unsigned int tx_lin;
 151         unsigned int tx_linfail;
 152         unsigned int rx_csum;
 153 };
 154
 155 /* Routing stuff */
 156 struct qeth_routing_info {
 157         enum qeth_routing_types type;
 158 };
 159
 160 /* IPA stuff */
 161 struct qeth_ipa_info {
 162         __u32 supported_funcs;
 163         __u32 enabled_funcs;
 164 };
 165
 166 /* SETBRIDGEPORT stuff */
 167 enum qeth_sbp_roles {
 168         QETH_SBP_ROLE_NONE      = 0,
 169         QETH_SBP_ROLE_PRIMARY   = 1,
 170         QETH_SBP_ROLE_SECONDARY = 2,
 171 };
 172
 173 enum qeth_sbp_states {
 174         QETH_SBP_STATE_INACTIVE = 0,
 175         QETH_SBP_STATE_STANDBY  = 1,
 176         QETH_SBP_STATE_ACTIVE   = 2,
 177 };
 178
 179 #define QETH_SBP_HOST_NOTIFICATION 1
 180
 181 struct qeth_sbp_info {
 182         __u32 supported_funcs;
 183         enum qeth_sbp_roles role;
 184         __u32 hostnotification:1;
 185         __u32 reflect_promisc:1;
 186         __u32 reflect_promisc_primary:1;
 187 };
 188
 189 struct qeth_vnicc_info {
 190         /* supported/currently configured VNICCs; updated in IPA exchanges */
 191         u32 sup_chars;
 192         u32 cur_chars;
 193         /* supported commands: bitmasks which VNICCs support respective cmd */
 194         u32 set_char_sup;
 195         u32 getset_timeout_sup;
 196         /* timeout value for the learning characteristic */
 197         u32 learning_timeout;
 198         /* characteristics wanted/configured by user */
 199         u32 wanted_chars;
 200         /* has user explicitly enabled rx_bcast while online? */
 201         bool rx_bcast_enabled;
 202 };
 203
 204 static inline int qeth_is_adp_supported(struct qeth_ipa_info *ipa,
 205                 enum qeth_ipa_setadp_cmd func)
 206 {
 207         return (ipa->supported_funcs & func);
 208 }
 209
 210 static inline int qeth_is_ipa_supported(struct qeth_ipa_info *ipa,
 211                 enum qeth_ipa_funcs func)
 212 {
 213         return (ipa->supported_funcs & func);
 214 }
 215
 216 static inline int qeth_is_ipa_enabled(struct qeth_ipa_info *ipa,
 217                 enum qeth_ipa_funcs func)
 218 {
 219         return (ipa->supported_funcs & ipa->enabled_funcs & func);
 220 }
 221
 222 #define qeth_adp_supported(c, f) \
 223         qeth_is_adp_supported(&c->options.adp, f)
 224 #define qeth_is_supported(c, f) \
 225         qeth_is_ipa_supported(&c->options.ipa4, f)
 226 #define qeth_is_enabled(c, f) \
 227         qeth_is_ipa_enabled(&c->options.ipa4, f)
 228 #define qeth_is_supported6(c, f) \
 229         qeth_is_ipa_supported(&c->options.ipa6, f)
 230 #define qeth_is_enabled6(c, f) \
 231         qeth_is_ipa_enabled(&c->options.ipa6, f)
 232 #define qeth_is_ipafunc_supported(c, prot, f) \
 233          ((prot == QETH_PROT_IPV6) ? \
 234                 qeth_is_supported6(c, f) : qeth_is_supported(c, f))
 235 #define qeth_is_ipafunc_enabled(c, prot, f) \
 236          ((prot == QETH_PROT_IPV6) ? \
 237                 qeth_is_enabled6(c, f) : qeth_is_enabled(c, f))
 238
 239 #define QETH_IDX_FUNC_LEVEL_OSD          0x0101
 240 #define QETH_IDX_FUNC_LEVEL_IQD          0x4108
 241
 242 #define QETH_BUFSIZE            4096
 243 #define CCW_CMD_WRITE           0x01
 244 #define CCW_CMD_READ            0x02
 245
 246 /**
 247  * some more defs
 248  */
 249 #define QETH_TX_TIMEOUT         100 * HZ
 250 #define QETH_RCD_TIMEOUT        60 * HZ
 251 #define QETH_RECLAIM_WORK_TIME  HZ
 252 #define QETH_MAX_PORTNO         15
 253
 254 /*IPv6 address autoconfiguration stuff*/
 255 #define UNIQUE_ID_IF_CREATE_ADDR_FAILED 0xfffe
 256 #define UNIQUE_ID_NOT_BY_CARD           0x10000
 257
 258 /*****************************************************************************/
 259 /* QDIO queue and buffer handling                                            */
 260 /*****************************************************************************/
 261 #define QETH_MAX_QUEUES 4
 262 #define QETH_IN_BUF_SIZE_DEFAULT 65536
 263 #define QETH_IN_BUF_COUNT_DEFAULT 64
 264 #define QETH_IN_BUF_COUNT_HSDEFAULT 128
 265 #define QETH_IN_BUF_COUNT_MIN 8
 266 #define QETH_IN_BUF_COUNT_MAX 128
 267 #define QETH_MAX_BUFFER_ELEMENTS(card) ((card)->qdio.in_buf_size >> 12)
 268 #define QETH_IN_BUF_REQUEUE_THRESHOLD(card) \
 269                  ((card)->qdio.in_buf_pool.buf_count / 2)
 270
 271 /* buffers we have to be behind before we get a PCI */
 272 #define QETH_PCI_THRESHOLD_A(card) ((card)->qdio.in_buf_pool.buf_count+1)
 273 /*enqueued free buffers left before we get a PCI*/
 274 #define QETH_PCI_THRESHOLD_B(card) 0
 275 /*not used unless the microcode gets patched*/
 276 #define QETH_PCI_TIMER_VALUE(card) 3
 277
 278 /* priority queing */
 279 #define QETH_PRIOQ_DEFAULT QETH_NO_PRIO_QUEUEING
 280 #define QETH_DEFAULT_QUEUE    2
 281 #define QETH_NO_PRIO_QUEUEING 0
 282 #define QETH_PRIO_Q_ING_PREC  1
 283 #define QETH_PRIO_Q_ING_TOS   2
 284 #define QETH_PRIO_Q_ING_SKB   3
 285 #define QETH_PRIO_Q_ING_VLAN  4
 286
 287 /* Packing */
 288 #define QETH_LOW_WATERMARK_PACK  2
 289 #define QETH_HIGH_WATERMARK_PACK 5
 290 #define QETH_WATERMARK_PACK_FUZZ 1
 291
 292 /* large receive scatter gather copy break */
 293 #define QETH_RX_SG_CB (PAGE_SIZE >> 1)
 294 #define QETH_RX_PULL_LEN 256
 295
 296 struct qeth_hdr_layer3 {
 297         __u8  id;
 298         __u8  flags;
 299         __u16 inbound_checksum; /*TSO:__u16 seqno */
 300         __u32 token;            /*TSO: __u32 reserved */
 301         __u16 length;
 302         __u8  vlan_prio;
 303         __u8  ext_flags;
 304         __u16 vlan_id;
 305         __u16 frame_offset;
 306         union {
 307                 /* TX: */
 308                 u8 ipv6_addr[16];
 309                 struct ipv4 {
 310                         u8 res[12];
 311                         u32 addr;
 312                 } ipv4;
 313                 /* RX: */
 314                 struct rx {
 315                         u8 res1[2];
 316                         u8 src_mac[6];
 317                         u8 res2[4];
 318                         u16 vlan_id;
 319                         u8 res3[2];
 320                 } rx;
 321         } next_hop;
 322 };
 323
 324 struct qeth_hdr_layer2 {
 325         __u8 id;
 326         __u8 flags[3];
 327         __u8 port_no;
 328         __u8 hdr_length;
 329         __u16 pkt_length;
 330         __u16 seq_no;
 331         __u16 vlan_id;
 332         __u32 reserved;
 333         __u8 reserved2[16];
 334 } __attribute__ ((packed));
 335
 336 struct qeth_hdr_osn {
 337         __u8 id;
 338         __u8 reserved;
 339         __u16 seq_no;
 340         __u16 reserved2;
 341         __u16 control_flags;
 342         __u16 pdu_length;
 343         __u8 reserved3[18];
 344         __u32 ccid;
 345 } __attribute__ ((packed));
 346
 347 struct qeth_hdr {
 348         union {
 349                 struct qeth_hdr_layer2 l2;
 350                 struct qeth_hdr_layer3 l3;
 351                 struct qeth_hdr_osn    osn;
 352         } hdr;
 353 } __attribute__ ((packed));
 354
 355 /*TCP Segmentation Offload header*/
 356 struct qeth_hdr_ext_tso {
 357         __u16 hdr_tot_len;
 358         __u8  imb_hdr_no;
 359         __u8  reserved;
 360         __u8  hdr_type;
 361         __u8  hdr_version;
 362         __u16 hdr_len;
 363         __u32 payload_len;
 364         __u16 mss;
 365         __u16 dg_hdr_len;
 366         __u8  padding[16];
 367 } __attribute__ ((packed));
 368
 369 struct qeth_hdr_tso {
 370         struct qeth_hdr hdr;    /*hdr->hdr.l3.xxx*/
 371         struct qeth_hdr_ext_tso ext;
 372 } __attribute__ ((packed));
 373
 374
 375 /* flags for qeth_hdr.flags */
 376 #define QETH_HDR_PASSTHRU 0x10
 377 #define QETH_HDR_IPV6     0x80
 378 #define QETH_HDR_CAST_MASK 0x07
 379 enum qeth_cast_flags {
 380         QETH_CAST_UNICAST   = 0x06,
 381         QETH_CAST_MULTICAST = 0x04,
 382         QETH_CAST_BROADCAST = 0x05,
 383         QETH_CAST_ANYCAST   = 0x07,
 384         QETH_CAST_NOCAST    = 0x00,
 385 };
 386
 387 enum qeth_layer2_frame_flags {
 388         QETH_LAYER2_FLAG_MULTICAST = 0x01,
 389         QETH_LAYER2_FLAG_BROADCAST = 0x02,
 390         QETH_LAYER2_FLAG_UNICAST   = 0x04,
 391         QETH_LAYER2_FLAG_VLAN      = 0x10,
 392 };
 393
 394 enum qeth_header_ids {
 395         QETH_HEADER_TYPE_LAYER3 = 0x01,
 396         QETH_HEADER_TYPE_LAYER2 = 0x02,
 397         QETH_HEADER_TYPE_TSO    = 0x03,
 398         QETH_HEADER_TYPE_OSN    = 0x04,
 399 };
 400 /* flags for qeth_hdr.ext_flags */
 401 #define QETH_HDR_EXT_VLAN_FRAME       0x01
 402 #define QETH_HDR_EXT_TOKEN_ID         0x02
 403 #define QETH_HDR_EXT_INCLUDE_VLAN_TAG 0x04
 404 #define QETH_HDR_EXT_SRC_MAC_ADDR     0x08
 405 #define QETH_HDR_EXT_CSUM_HDR_REQ     0x10
 406 #define QETH_HDR_EXT_CSUM_TRANSP_REQ  0x20
 407 #define QETH_HDR_EXT_UDP              0x40 /*bit off for TCP*/
 408
 409 enum qeth_qdio_buffer_states {
 410         /*
 411          * inbound: read out by driver; owned by hardware in order to be filled
 412          * outbound: owned by driver in order to be filled
 413          */
 414         QETH_QDIO_BUF_EMPTY,
 415         /*
 416          * inbound: filled by hardware; owned by driver in order to be read out
 417          * outbound: filled by driver; owned by hardware in order to be sent
 418          */
 419         QETH_QDIO_BUF_PRIMED,
 420         /*
 421          * inbound: not applicable
 422          * outbound: identified to be pending in TPQ
 423          */
 424         QETH_QDIO_BUF_PENDING,
 425         /*
 426          * inbound: not applicable
 427          * outbound: found in completion queue
 428          */
 429         QETH_QDIO_BUF_IN_CQ,
 430         /*
 431          * inbound: not applicable
 432          * outbound: handled via transfer pending / completion queue
 433          */
 434         QETH_QDIO_BUF_HANDLED_DELAYED,
 435 };
 436
 437 enum qeth_qdio_info_states {
 438         QETH_QDIO_UNINITIALIZED,
 439         QETH_QDIO_ALLOCATED,
 440         QETH_QDIO_ESTABLISHED,
 441         QETH_QDIO_CLEANING
 442 };
 443
 444 struct qeth_buffer_pool_entry {
 445         struct list_head list;
 446         struct list_head init_list;
 447         void *elements[QDIO_MAX_ELEMENTS_PER_BUFFER];
 448 };
 449
 450 struct qeth_qdio_buffer_pool {
 451         struct list_head entry_list;
 452         int buf_count;
 453 };
 454
 455 struct qeth_qdio_buffer {
 456         struct qdio_buffer *buffer;
 457         /* the buffer pool entry currently associated to this buffer */
 458         struct qeth_buffer_pool_entry *pool_entry;
 459         struct sk_buff *rx_skb;
 460 };
 461
 462 struct qeth_qdio_q {
 463         struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 464         struct qeth_qdio_buffer bufs[QDIO_MAX_BUFFERS_PER_Q];
 465         int next_buf_to_init;
 466 };
 467
 468 struct qeth_qdio_out_buffer {
 469         struct qdio_buffer *buffer;
 470         atomic_t state;
 471         int next_element_to_fill;
 472         struct sk_buff_head skb_list;
 473         int is_header[QDIO_MAX_ELEMENTS_PER_BUFFER];
 474
 475         struct qeth_qdio_out_q *q;
 476         struct qeth_qdio_out_buffer *next_pending;
 477 };
 478
 479 struct qeth_card;
 480
 481 enum qeth_out_q_states {
 482        QETH_OUT_Q_UNLOCKED,
 483        QETH_OUT_Q_LOCKED,
 484        QETH_OUT_Q_LOCKED_FLUSH,
 485 };
 486
 487 struct qeth_qdio_out_q {
 488         struct qdio_buffer *qdio_bufs[QDIO_MAX_BUFFERS_PER_Q];
 489         struct qeth_qdio_out_buffer *bufs[QDIO_MAX_BUFFERS_PER_Q];
 490         struct qdio_outbuf_state *bufstates; /* convenience pointer */
 491         int queue_no;
 492         struct qeth_card *card;
 493         atomic_t state;
 494         int do_pack;
 495         /*
 496          * index of buffer to be filled by driver; state EMPTY or PACKING
 497          */
 498         int next_buf_to_fill;
 499         /*
 500          * number of buffers that are currently filled (PRIMED)
 501          * -> these buffers are hardware-owned
 502          */
 503         atomic_t used_buffers;
 504         /* indicates whether PCI flag must be set (or if one is outstanding) */
 505         atomic_t set_pci_flags_count;
 506 };
 507
 508 struct qeth_qdio_info {
 509         atomic_t state;
 510         /* input */
 511         int no_in_queues;
 512         struct qeth_qdio_q *in_q;
 513         struct qeth_qdio_q *c_q;
 514         struct qeth_qdio_buffer_pool in_buf_pool;
 515         struct qeth_qdio_buffer_pool init_pool;
 516         int in_buf_size;
 517
 518         /* output */
 519         int no_out_queues;
 520         struct qeth_qdio_out_q **out_qs;
 521         struct qdio_outbuf_state *out_bufstates;
 522
 523         /* priority queueing */
 524         int do_prio_queueing;
 525         int default_out_queue;
 526 };
 527
 528 /**
 529  * buffer stuff for read channel
 530  */
 531 #define QETH_CMD_BUFFER_NO      8
 532
 533 /**
 534  *  channel state machine
 535  */
 536 enum qeth_channel_states {
 537         CH_STATE_UP,
 538         CH_STATE_DOWN,
 539         CH_STATE_ACTIVATING,
 540         CH_STATE_HALTED,
 541         CH_STATE_STOPPED,
 542         CH_STATE_RCD,
 543         CH_STATE_RCD_DONE,
 544 };
 545 /**
 546  * card state machine
 547  */
 548 enum qeth_card_states {
 549         CARD_STATE_DOWN,
 550         CARD_STATE_HARDSETUP,
 551         CARD_STATE_SOFTSETUP,
 552         CARD_STATE_UP,
 553         CARD_STATE_RECOVER,
 554 };
 555
 556 /**
 557  * Protocol versions
 558  */
 559 enum qeth_prot_versions {
 560         QETH_PROT_IPV4 = 0x0004,
 561         QETH_PROT_IPV6 = 0x0006,
 562 };
 563
 564 enum qeth_cmd_buffer_state {
 565         BUF_STATE_FREE,
 566         BUF_STATE_LOCKED,
 567 };
 568
 569 enum qeth_cq {
 570         QETH_CQ_DISABLED = 0,
 571         QETH_CQ_ENABLED = 1,
 572         QETH_CQ_NOTAVAILABLE = 2,
 573 };
 574
 575 struct qeth_ipato {
 576         bool enabled;
 577         bool invert4;
 578         bool invert6;
 579         struct list_head entries;
 580 };
 581
 582 struct qeth_channel;
 583
 584 struct qeth_cmd_buffer {
 585         enum qeth_cmd_buffer_state state;
 586         struct qeth_channel *channel;
 587         unsigned char *data;
 588         int rc;
 589         void (*callback) (struct qeth_channel *, struct qeth_cmd_buffer *);
 590 };
 591
 592 static inline struct qeth_ipa_cmd *__ipa_cmd(struct qeth_cmd_buffer *iob)
 593 {
 594         return (struct qeth_ipa_cmd *)(iob->data + IPA_PDU_HEADER_SIZE);
 595 }
 596
 597 /**
 598  * definition of a qeth channel, used for read and write
 599  */
 600 struct qeth_channel {
 601         enum qeth_channel_states state;
 602         struct ccw1 *ccw;
 603         spinlock_t iob_lock;
 604         wait_queue_head_t wait_q;
 605         struct ccw_device *ccwdev;
 606 /*command buffer for control data*/
 607         struct qeth_cmd_buffer iob[QETH_CMD_BUFFER_NO];
 608         atomic_t irq_pending;
 609         int io_buf_no;
 610 };
 611
 612 /**
 613  *  OSA card related definitions
 614  */
 615 struct qeth_token {
 616         __u32 issuer_rm_w;
 617         __u32 issuer_rm_r;
 618         __u32 cm_filter_w;
 619         __u32 cm_filter_r;
 620         __u32 cm_connection_w;
 621         __u32 cm_connection_r;
 622         __u32 ulp_filter_w;
 623         __u32 ulp_filter_r;
 624         __u32 ulp_connection_w;
 625         __u32 ulp_connection_r;
 626 };
 627
 628 struct qeth_seqno {
 629         __u32 trans_hdr;
 630         __u32 pdu_hdr;
 631         __u32 pdu_hdr_ack;
 632         __u16 ipa;
 633         __u32 pkt_seqno;
 634 };
 635
 636 struct qeth_reply {
 637         struct list_head list;
 638         wait_queue_head_t wait_q;
 639         int (*callback)(struct qeth_card *, struct qeth_reply *,
 640                 unsigned long);
 641         u32 seqno;
 642         unsigned long offset;
 643         atomic_t received;
 644         int rc;
 645         void *param;
 646         struct qeth_card *card;
 647         refcount_t refcnt;
 648 };
 649
 650 struct qeth_card_blkt {
 651         int time_total;
 652         int inter_packet;
 653         int inter_packet_jumbo;
 654 };
 655
 656 #define QETH_BROADCAST_WITH_ECHO    0x01
 657 #define QETH_BROADCAST_WITHOUT_ECHO 0x02
 658 #define QETH_LAYER2_MAC_READ        0x01
 659 #define QETH_LAYER2_MAC_REGISTERED  0x02
 660 struct qeth_card_info {
 661         unsigned short unit_addr2;
 662         unsigned short cula;
 663         unsigned short chpid;
 664         __u16 func_level;
 665         char mcl_level[QETH_MCL_LENGTH + 1];
 666         int guestlan;
 667         int mac_bits;
 668         enum qeth_card_types type;
 669         enum qeth_link_types link_type;
 670         int broadcast_capable;
 671         int unique_id;
 672         bool layer_enforced;
 673         struct qeth_card_blkt blkt;
 674         enum qeth_ipa_promisc_modes promisc_mode;
 675         __u32 diagass_support;
 676         __u32 hwtrap;
 677 };
 678
 679 struct qeth_card_options {
 680         struct qeth_routing_info route4;
 681         struct qeth_ipa_info ipa4;
 682         struct qeth_ipa_info adp; /*Adapter parameters*/
 683         struct qeth_routing_info route6;
 684         struct qeth_ipa_info ipa6;
 685         struct qeth_sbp_info sbp; /* SETBRIDGEPORT options */
 686         struct qeth_vnicc_info vnicc; /* VNICC options */
 687         int fake_broadcast;
 688         int layer2;
 689         int performance_stats;
 690         int rx_sg_cb;
 691         enum qeth_ipa_isolation_modes isolation;
 692         enum qeth_ipa_isolation_modes prev_isolation;
 693         int sniffer;
 694         enum qeth_cq cq;
 695         char hsuid[9];
 696 };
 697
 698 /*
 699  * thread bits for qeth_card thread masks
 700  */
 701 enum qeth_threads {
 702         QETH_RECOVER_THREAD = 1,
 703 };
 704
 705 struct qeth_osn_info {
 706         int (*assist_cb)(struct net_device *dev, void *data);
 707         int (*data_cb)(struct sk_buff *skb);
 708 };
 709
 710 enum qeth_discipline_id {
 711         QETH_DISCIPLINE_UNDETERMINED = -1,
 712         QETH_DISCIPLINE_LAYER3 = 0,
 713         QETH_DISCIPLINE_LAYER2 = 1,
 714 };
 715
 716 struct qeth_discipline {
 717         const struct device_type *devtype;
 718         int (*process_rx_buffer)(struct qeth_card *card, int budget, int *done);
 719         int (*recover)(void *ptr);
 720         int (*setup) (struct ccwgroup_device *);
 721         void (*remove) (struct ccwgroup_device *);
 722         int (*set_online) (struct ccwgroup_device *);
 723         int (*set_offline) (struct ccwgroup_device *);
 724         int (*freeze)(struct ccwgroup_device *);
 725         int (*thaw) (struct ccwgroup_device *);
 726         int (*restore)(struct ccwgroup_device *);
 727         int (*do_ioctl)(struct net_device *dev, struct ifreq *rq, int cmd);
 728         int (*control_event_handler)(struct qeth_card *card,
 729                                         struct qeth_ipa_cmd *cmd);
 730 };
 731
 732 struct qeth_vlan_vid {
 733         struct list_head list;
 734         unsigned short vid;
 735 };
 736
 737 enum qeth_addr_disposition {
 738         QETH_DISP_ADDR_DELETE = 0,
 739         QETH_DISP_ADDR_DO_NOTHING = 1,
 740         QETH_DISP_ADDR_ADD = 2,
 741 };
 742
 743 struct qeth_rx {
 744         int b_count;
 745         int b_index;
 746         struct qdio_buffer_element *b_element;
 747         int e_offset;
 748         int qdio_err;
 749 };
 750
 751 struct carrier_info {
 752         __u8  card_type;
 753         __u16 port_mode;
 754         __u32 port_speed;
 755 };
 756
 757 struct qeth_switch_info {
 758         __u32 capabilities;
 759         __u32 settings;
 760 };
 761
 762 #define QETH_NAPI_WEIGHT NAPI_POLL_WEIGHT
 763
 764 struct qeth_card {
 765         struct list_head list;
 766         enum qeth_card_states state;
 767         int lan_online;
 768         spinlock_t lock;
 769         struct ccwgroup_device *gdev;
 770         struct qeth_channel read;
 771         struct qeth_channel write;
 772         struct qeth_channel data;
 773
 774         struct net_device *dev;
 775         struct net_device_stats stats;
 776
 777         struct qeth_card_info info;
 778         struct qeth_token token;
 779         struct qeth_seqno seqno;
 780         struct qeth_card_options options;
 781
 782         wait_queue_head_t wait_q;
 783         spinlock_t mclock;
 784         unsigned long active_vlans[BITS_TO_LONGS(VLAN_N_VID)];
 785         struct mutex vid_list_mutex;            /* vid_list */
 786         struct list_head vid_list;
 787         DECLARE_HASHTABLE(mac_htable, 4);
 788         DECLARE_HASHTABLE(ip_htable, 4);
 789         DECLARE_HASHTABLE(ip_mc_htable, 4);
 790         struct work_struct kernel_thread_starter;
 791         spinlock_t thread_mask_lock;
 792         unsigned long thread_start_mask;
 793         unsigned long thread_allowed_mask;
 794         unsigned long thread_running_mask;
 795         struct task_struct *recovery_task;
 796         spinlock_t ip_lock;
 797         struct qeth_ipato ipato;
 798         struct list_head cmd_waiter_list;
 799         /* QDIO buffer handling */
 800         struct qeth_qdio_info qdio;
 801         struct qeth_perf_stats perf_stats;
 802         int read_or_write_problem;
 803         struct qeth_osn_info osn_info;
 804         struct qeth_discipline *discipline;
 805         atomic_t force_alloc_skb;
 806         struct service_level qeth_service_level;
 807         struct qdio_ssqd_desc ssqd;
 808         debug_info_t *debug;
 809         struct mutex conf_mutex;
 810         struct mutex discipline_mutex;
 811         struct napi_struct napi;
 812         struct qeth_rx rx;
 813         struct delayed_work buffer_reclaim_work;
 814         int reclaim_index;
 815         struct work_struct close_dev_work;
 816 };
 817
 818 struct qeth_card_list_struct {
 819         struct list_head list;
 820         rwlock_t rwlock;
 821 };
 822
 823 struct qeth_trap_id {
 824         __u16 lparnr;
 825         char vmname[8];
 826         __u8 chpid;
 827         __u8 ssid;
 828         __u16 devno;
 829 } __packed;
 830
 831 /*some helper functions*/
 832 #define QETH_CARD_IFNAME(card) (((card)->dev)? (card)->dev->name : "")
 833
 834 static inline bool qeth_netdev_is_registered(struct net_device *dev)
 835 {
 836         return dev->netdev_ops != NULL;
 837 }
 838
 839 static inline void qeth_scrub_qdio_buffer(struct qdio_buffer *buf,
 840                                           unsigned int elements)
 841 {
 842         unsigned int i;
 843
 844         for (i = 0; i < elements; i++)
 845                 memset(&buf->element[i], 0, sizeof(struct qdio_buffer_element));
 846         buf->element[14].sflags = 0;
 847         buf->element[15].sflags = 0;
 848 }
 849
 850 /**
 851  * qeth_get_elements_for_range() -      find number of SBALEs to cover range.
 852  * @start:                              Start of the address range.
 853  * @end:                                Address after the end of the range.
 854  *
 855  * Returns the number of pages, and thus QDIO buffer elements, needed to cover
 856  * the specified address range.
 857  */
 858 static inline int qeth_get_elements_for_range(addr_t start, addr_t end)
 859 {
 860         return PFN_UP(end) - PFN_DOWN(start);
 861 }
 862
 863 static inline int qeth_get_micros(void)
 864 {
 865         return (int) (get_tod_clock() >> 12);
 866 }
 867
 868 static inline int qeth_get_ip_version(struct sk_buff *skb)
 869 {
 870         struct vlan_ethhdr *veth = vlan_eth_hdr(skb);
 871         __be16 prot = veth->h_vlan_proto;
 872
 873         if (prot == htons(ETH_P_8021Q))
 874                 prot = veth->h_vlan_encapsulated_proto;
 875
 876         switch (prot) {
 877         case htons(ETH_P_IPV6):
 878                 return 6;
 879         case htons(ETH_P_IP):
 880                 return 4;
 881         default:
 882                 return 0;
 883         }
 884 }
 885
 886 static inline void qeth_rx_csum(struct qeth_card *card, struct sk_buff *skb,
 887                                 u8 flags)
 888 {
 889         if ((card->dev->features & NETIF_F_RXCSUM) &&
 890             (flags & QETH_HDR_EXT_CSUM_TRANSP_REQ)) {
 891                 skb->ip_summed = CHECKSUM_UNNECESSARY;
 892                 if (card->options.performance_stats)
 893                         card->perf_stats.rx_csum++;
 894         } else {
 895                 skb->ip_summed = CHECKSUM_NONE;
 896         }
 897 }
 898
 899 static inline void qeth_tx_csum(struct sk_buff *skb, u8 *flags, int ipv)
 900 {
 901         *flags |= QETH_HDR_EXT_CSUM_TRANSP_REQ;
 902         if ((ipv == 4 && ip_hdr(skb)->protocol == IPPROTO_UDP) ||
 903             (ipv == 6 && ipv6_hdr(skb)->nexthdr == IPPROTO_UDP))
 904                 *flags |= QETH_HDR_EXT_UDP;
 905         if (ipv == 4) {
 906                 /* some HW requires combined L3+L4 csum offload: */
 907                 *flags |= QETH_HDR_EXT_CSUM_HDR_REQ;
 908                 ip_hdr(skb)->check = 0;
 909         }
 910 }
 911
 912 static inline void qeth_put_buffer_pool_entry(struct qeth_card *card,
 913                 struct qeth_buffer_pool_entry *entry)
 914 {
 915         list_add_tail(&entry->list, &card->qdio.in_buf_pool.entry_list);
 916 }
 917
 918 static inline int qeth_is_diagass_supported(struct qeth_card *card,
 919                 enum qeth_diags_cmds cmd)
 920 {
 921         return card->info.diagass_support & (__u32)cmd;
 922 }
 923
 924 int qeth_send_simple_setassparms_prot(struct qeth_card *card,
 925                                       enum qeth_ipa_funcs ipa_func,
 926                                       u16 cmd_code, long data,
 927                                       enum qeth_prot_versions prot);
 928 /* IPv4 variant */
 929 static inline int qeth_send_simple_setassparms(struct qeth_card *card,
 930                                                enum qeth_ipa_funcs ipa_func,
 931                                                u16 cmd_code, long data)
 932 {
 933         return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
 934                                                  data, QETH_PROT_IPV4);
 935 }
 936
 937 static inline int qeth_send_simple_setassparms_v6(struct qeth_card *card,
 938                                                   enum qeth_ipa_funcs ipa_func,
 939                                                   u16 cmd_code, long data)
 940 {
 941         return qeth_send_simple_setassparms_prot(card, ipa_func, cmd_code,
 942                                                  data, QETH_PROT_IPV6);
 943 }
 944
 945 int qeth_get_priority_queue(struct qeth_card *card, struct sk_buff *skb,
 946                             int ipv);
 947 static inline struct qeth_qdio_out_q *qeth_get_tx_queue(struct qeth_card *card,
 948                                                         struct sk_buff *skb,
 949                                                         int ipv, int cast_type)
 950 {
 951         if (IS_IQD(card) && cast_type != RTN_UNICAST)
 952                 return card->qdio.out_qs[card->qdio.no_out_queues - 1];
 953         if (!card->qdio.do_prio_queueing)
 954                 return card->qdio.out_qs[card->qdio.default_out_queue];
 955         return card->qdio.out_qs[qeth_get_priority_queue(card, skb, ipv)];
 956 }
 957
 958 extern struct qeth_discipline qeth_l2_discipline;
 959 extern struct qeth_discipline qeth_l3_discipline;
 960 extern const struct attribute_group *qeth_generic_attr_groups[];
 961 extern const struct attribute_group *qeth_osn_attr_groups[];
 962 extern const struct attribute_group qeth_device_attr_group;
 963 extern const struct attribute_group qeth_device_blkt_group;
 964 extern const struct device_type qeth_generic_devtype;
 965 extern struct workqueue_struct *qeth_wq;
 966
 967 int qeth_card_hw_is_reachable(struct qeth_card *);
 968 const char *qeth_get_cardname_short(struct qeth_card *);
 969 int qeth_realloc_buffer_pool(struct qeth_card *, int);
 970 int qeth_core_load_discipline(struct qeth_card *, enum qeth_discipline_id);
 971 void qeth_core_free_discipline(struct qeth_card *);
 972
 973 /* exports for qeth discipline device drivers */
 974 extern struct qeth_card_list_struct qeth_core_card_list;
 975 extern struct kmem_cache *qeth_core_header_cache;
 976 extern struct qeth_dbf_info qeth_dbf[QETH_DBF_INFOS];
 977
 978 struct net_device *qeth_clone_netdev(struct net_device *orig);
 979 void qeth_set_recovery_task(struct qeth_card *);
 980 void qeth_clear_recovery_task(struct qeth_card *);
 981 void qeth_set_allowed_threads(struct qeth_card *, unsigned long , int);
 982 int qeth_threads_running(struct qeth_card *, unsigned long);
 983 int qeth_wait_for_threads(struct qeth_card *, unsigned long);
 984 int qeth_do_run_thread(struct qeth_card *, unsigned long);
 985 void qeth_clear_thread_start_bit(struct qeth_card *, unsigned long);
 986 void qeth_clear_thread_running_bit(struct qeth_card *, unsigned long);
 987 int qeth_core_hardsetup_card(struct qeth_card *);
 988 void qeth_print_status_message(struct qeth_card *);
 989 int qeth_init_qdio_queues(struct qeth_card *);
 990 int qeth_send_ipa_cmd(struct qeth_card *, struct qeth_cmd_buffer *,
 991                   int (*reply_cb)
 992                   (struct qeth_card *, struct qeth_reply *, unsigned long),
 993                   void *);
 994 struct qeth_cmd_buffer *qeth_get_ipacmd_buffer(struct qeth_card *,
 995                         enum qeth_ipa_cmds, enum qeth_prot_versions);
 996 struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
 997                 struct qeth_qdio_buffer *, struct qdio_buffer_element **, int *,
 998                 struct qeth_hdr **);
 999 void qeth_schedule_recovery(struct qeth_card *);
1000 int qeth_poll(struct napi_struct *napi, int budget);
1001 void qeth_clear_ipacmd_list(struct qeth_card *);
1002 int qeth_qdio_clear_card(struct qeth_card *, int);
1003 void qeth_clear_working_pool_list(struct qeth_card *);
1004 void qeth_clear_cmd_buffers(struct qeth_channel *);
1005 void qeth_clear_qdio_buffers(struct qeth_card *);
1006 void qeth_setadp_promisc_mode(struct qeth_card *);
1007 struct net_device_stats *qeth_get_stats(struct net_device *);
1008 int qeth_setadpparms_change_macaddr(struct qeth_card *);
1009 void qeth_tx_timeout(struct net_device *);
1010 void qeth_prepare_control_data(struct qeth_card *, int,
1011                                 struct qeth_cmd_buffer *);
1012 void qeth_release_buffer(struct qeth_channel *, struct qeth_cmd_buffer *);
1013 void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob);
1014 struct qeth_cmd_buffer *qeth_wait_for_buffer(struct qeth_channel *);
1015 int qeth_query_switch_attributes(struct qeth_card *card,
1016                                   struct qeth_switch_info *sw_info);
1017 int qeth_send_control_data(struct qeth_card *, int, struct qeth_cmd_buffer *,
1018         int (*reply_cb)(struct qeth_card *, struct qeth_reply*, unsigned long),
1019         void *reply_param);
1020 int qeth_get_elements_no(struct qeth_card *card, struct sk_buff *skb,
1021                          int extra_elems, int data_offset);
1022 int qeth_get_elements_for_frags(struct sk_buff *);
1023 int qeth_do_send_packet_fast(struct qeth_qdio_out_q *queue, struct sk_buff *skb,
1024                              struct qeth_hdr *hdr, unsigned int offset,
1025                              unsigned int hd_len);
1026 int qeth_do_send_packet(struct qeth_card *card, struct qeth_qdio_out_q *queue,
1027                         struct sk_buff *skb, struct qeth_hdr *hdr,
1028                         unsigned int offset, unsigned int hd_len,
1029                         int elements_needed);
1030 int qeth_do_ioctl(struct net_device *dev, struct ifreq *rq, int cmd);
1031 int qeth_core_get_sset_count(struct net_device *, int);
1032 void qeth_core_get_ethtool_stats(struct net_device *,
1033                                 struct ethtool_stats *, u64 *);
1034 void qeth_core_get_strings(struct net_device *, u32, u8 *);
1035 void qeth_core_get_drvinfo(struct net_device *, struct ethtool_drvinfo *);
1036 void qeth_dbf_longtext(debug_info_t *id, int level, char *text, ...);
1037 int qeth_core_ethtool_get_link_ksettings(struct net_device *netdev,
1038                                          struct ethtool_link_ksettings *cmd);
1039 int qeth_set_access_ctrl_online(struct qeth_card *card, int fallback);
1040 int qeth_hdr_chk_and_bounce(struct sk_buff *, struct qeth_hdr **, int);
1041 int qeth_configure_cq(struct qeth_card *, enum qeth_cq);
1042 int qeth_hw_trap(struct qeth_card *, enum qeth_diags_trap_action);
1043 void qeth_trace_features(struct qeth_card *);
1044 void qeth_close_dev(struct qeth_card *);
1045 int qeth_send_setassparms(struct qeth_card *, struct qeth_cmd_buffer *, __u16,
1046                           long,
1047                           int (*reply_cb)(struct qeth_card *,
1048                                           struct qeth_reply *, unsigned long),
1049                           void *);
1050 int qeth_setassparms_cb(struct qeth_card *, struct qeth_reply *, unsigned long);
1051 struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *,
1052                                                  enum qeth_ipa_funcs,
1053                                                  __u16, __u16,
1054                                                  enum qeth_prot_versions);
1055 int qeth_set_features(struct net_device *, netdev_features_t);
1056 void qeth_enable_hw_features(struct net_device *dev);
1057 netdev_features_t qeth_fix_features(struct net_device *, netdev_features_t);
1058 netdev_features_t qeth_features_check(struct sk_buff *skb,
1059                                       struct net_device *dev,
1060                                       netdev_features_t features);
1061 int qeth_vm_request_mac(struct qeth_card *card);
1062 int qeth_add_hw_header(struct qeth_card *card, struct sk_buff *skb,
1063                        struct qeth_hdr **hdr, unsigned int hdr_len,
1064                        unsigned int proto_len, unsigned int *elements);
1065
1066 /* exports for OSN */
1067 int qeth_osn_assist(struct net_device *, void *, int);
1068 int qeth_osn_register(unsigned char *read_dev_no, struct net_device **,
1069                 int (*assist_cb)(struct net_device *, void *),
1070                 int (*data_cb)(struct sk_buff *));
1071 void qeth_osn_deregister(struct net_device *);
1072
1073 #endif /* __QETH_CORE_H__ */