drivers/net/ethernet/broadcom/bnx2x/bnx2x_stats.h

   1 /* bnx2x_stats.h: Broadcom Everest network driver.
   2  *
   3  * Copyright (c) 2007-2013 Broadcom Corporation
   4  *
   5  * This program is free software; you can redistribute it and/or modify
   6  * it under the terms of the GNU General Public License as published by
   7  * the Free Software Foundation.
   8  *
   9  * Maintained by: Eilon Greenstein <eilong@broadcom.com>
  10  * Written by: Eliezer Tamir
  11  * Based on code from Michael Chan's bnx2 driver
  12  * UDP CSUM errata workaround by Arik Gendelman
  13  * Slowpath and fastpath rework by Vladislav Zolotarov
  14  * Statistics and Link management by Yitchak Gertner
  15  *
  16  */
  17 #ifndef BNX2X_STATS_H
  18 #define BNX2X_STATS_H
  19
  20 #include <linux/types.h>
  21
  22 struct nig_stats {
  23         u32 brb_discard;
  24         u32 brb_packet;
  25         u32 brb_truncate;
  26         u32 flow_ctrl_discard;
  27         u32 flow_ctrl_octets;
  28         u32 flow_ctrl_packet;
  29         u32 mng_discard;
  30         u32 mng_octet_inp;
  31         u32 mng_octet_out;
  32         u32 mng_packet_inp;
  33         u32 mng_packet_out;
  34         u32 pbf_octets;
  35         u32 pbf_packet;
  36         u32 safc_inp;
  37         u32 egress_mac_pkt0_lo;
  38         u32 egress_mac_pkt0_hi;
  39         u32 egress_mac_pkt1_lo;
  40         u32 egress_mac_pkt1_hi;
  41 };
  42
  43
  44 enum bnx2x_stats_event {
  45         STATS_EVENT_PMF = 0,
  46         STATS_EVENT_LINK_UP,
  47         STATS_EVENT_UPDATE,
  48         STATS_EVENT_STOP,
  49         STATS_EVENT_MAX
  50 };
  51
  52 enum bnx2x_stats_state {
  53         STATS_STATE_DISABLED = 0,
  54         STATS_STATE_ENABLED,
  55         STATS_STATE_MAX
  56 };
  57
  58 struct bnx2x_eth_stats {
  59         u32 total_bytes_received_hi;
  60         u32 total_bytes_received_lo;
  61         u32 total_bytes_transmitted_hi;
  62         u32 total_bytes_transmitted_lo;
  63         u32 total_unicast_packets_received_hi;
  64         u32 total_unicast_packets_received_lo;
  65         u32 total_multicast_packets_received_hi;
  66         u32 total_multicast_packets_received_lo;
  67         u32 total_broadcast_packets_received_hi;
  68         u32 total_broadcast_packets_received_lo;
  69         u32 total_unicast_packets_transmitted_hi;
  70         u32 total_unicast_packets_transmitted_lo;
  71         u32 total_multicast_packets_transmitted_hi;
  72         u32 total_multicast_packets_transmitted_lo;
  73         u32 total_broadcast_packets_transmitted_hi;
  74         u32 total_broadcast_packets_transmitted_lo;
  75         u32 valid_bytes_received_hi;
  76         u32 valid_bytes_received_lo;
  77
  78         u32 error_bytes_received_hi;
  79         u32 error_bytes_received_lo;
  80         u32 etherstatsoverrsizepkts_hi;
  81         u32 etherstatsoverrsizepkts_lo;
  82         u32 no_buff_discard_hi;
  83         u32 no_buff_discard_lo;
  84
  85         u32 rx_stat_ifhcinbadoctets_hi;
  86         u32 rx_stat_ifhcinbadoctets_lo;
  87         u32 tx_stat_ifhcoutbadoctets_hi;
  88         u32 tx_stat_ifhcoutbadoctets_lo;
  89         u32 rx_stat_dot3statsfcserrors_hi;
  90         u32 rx_stat_dot3statsfcserrors_lo;
  91         u32 rx_stat_dot3statsalignmenterrors_hi;
  92         u32 rx_stat_dot3statsalignmenterrors_lo;
  93         u32 rx_stat_dot3statscarriersenseerrors_hi;
  94         u32 rx_stat_dot3statscarriersenseerrors_lo;
  95         u32 rx_stat_falsecarriererrors_hi;
  96         u32 rx_stat_falsecarriererrors_lo;
  97         u32 rx_stat_etherstatsundersizepkts_hi;
  98         u32 rx_stat_etherstatsundersizepkts_lo;
  99         u32 rx_stat_dot3statsframestoolong_hi;
 100         u32 rx_stat_dot3statsframestoolong_lo;
 101         u32 rx_stat_etherstatsfragments_hi;
 102         u32 rx_stat_etherstatsfragments_lo;
 103         u32 rx_stat_etherstatsjabbers_hi;
 104         u32 rx_stat_etherstatsjabbers_lo;
 105         u32 rx_stat_maccontrolframesreceived_hi;
 106         u32 rx_stat_maccontrolframesreceived_lo;
 107         u32 rx_stat_bmac_xpf_hi;
 108         u32 rx_stat_bmac_xpf_lo;
 109         u32 rx_stat_bmac_xcf_hi;
 110         u32 rx_stat_bmac_xcf_lo;
 111         u32 rx_stat_xoffstateentered_hi;
 112         u32 rx_stat_xoffstateentered_lo;
 113         u32 rx_stat_xonpauseframesreceived_hi;
 114         u32 rx_stat_xonpauseframesreceived_lo;
 115         u32 rx_stat_xoffpauseframesreceived_hi;
 116         u32 rx_stat_xoffpauseframesreceived_lo;
 117         u32 tx_stat_outxonsent_hi;
 118         u32 tx_stat_outxonsent_lo;
 119         u32 tx_stat_outxoffsent_hi;
 120         u32 tx_stat_outxoffsent_lo;
 121         u32 tx_stat_flowcontroldone_hi;
 122         u32 tx_stat_flowcontroldone_lo;
 123         u32 tx_stat_etherstatscollisions_hi;
 124         u32 tx_stat_etherstatscollisions_lo;
 125         u32 tx_stat_dot3statssinglecollisionframes_hi;
 126         u32 tx_stat_dot3statssinglecollisionframes_lo;
 127         u32 tx_stat_dot3statsmultiplecollisionframes_hi;
 128         u32 tx_stat_dot3statsmultiplecollisionframes_lo;
 129         u32 tx_stat_dot3statsdeferredtransmissions_hi;
 130         u32 tx_stat_dot3statsdeferredtransmissions_lo;
 131         u32 tx_stat_dot3statsexcessivecollisions_hi;
 132         u32 tx_stat_dot3statsexcessivecollisions_lo;
 133         u32 tx_stat_dot3statslatecollisions_hi;
 134         u32 tx_stat_dot3statslatecollisions_lo;
 135         u32 tx_stat_etherstatspkts64octets_hi;
 136         u32 tx_stat_etherstatspkts64octets_lo;
 137         u32 tx_stat_etherstatspkts65octetsto127octets_hi;
 138         u32 tx_stat_etherstatspkts65octetsto127octets_lo;
 139         u32 tx_stat_etherstatspkts128octetsto255octets_hi;
 140         u32 tx_stat_etherstatspkts128octetsto255octets_lo;
 141         u32 tx_stat_etherstatspkts256octetsto511octets_hi;
 142         u32 tx_stat_etherstatspkts256octetsto511octets_lo;
 143         u32 tx_stat_etherstatspkts512octetsto1023octets_hi;
 144         u32 tx_stat_etherstatspkts512octetsto1023octets_lo;
 145         u32 tx_stat_etherstatspkts1024octetsto1522octets_hi;
 146         u32 tx_stat_etherstatspkts1024octetsto1522octets_lo;
 147         u32 tx_stat_etherstatspktsover1522octets_hi;
 148         u32 tx_stat_etherstatspktsover1522octets_lo;
 149         u32 tx_stat_bmac_2047_hi;
 150         u32 tx_stat_bmac_2047_lo;
 151         u32 tx_stat_bmac_4095_hi;
 152         u32 tx_stat_bmac_4095_lo;
 153         u32 tx_stat_bmac_9216_hi;
 154         u32 tx_stat_bmac_9216_lo;
 155         u32 tx_stat_bmac_16383_hi;
 156         u32 tx_stat_bmac_16383_lo;
 157         u32 tx_stat_dot3statsinternalmactransmiterrors_hi;
 158         u32 tx_stat_dot3statsinternalmactransmiterrors_lo;
 159         u32 tx_stat_bmac_ufl_hi;
 160         u32 tx_stat_bmac_ufl_lo;
 161
 162         u32 pause_frames_received_hi;
 163         u32 pause_frames_received_lo;
 164         u32 pause_frames_sent_hi;
 165         u32 pause_frames_sent_lo;
 166
 167         u32 etherstatspkts1024octetsto1522octets_hi;
 168         u32 etherstatspkts1024octetsto1522octets_lo;
 169         u32 etherstatspktsover1522octets_hi;
 170         u32 etherstatspktsover1522octets_lo;
 171
 172         u32 brb_drop_hi;
 173         u32 brb_drop_lo;
 174         u32 brb_truncate_hi;
 175         u32 brb_truncate_lo;
 176
 177         u32 mac_filter_discard;
 178         u32 mf_tag_discard;
 179         u32 brb_truncate_discard;
 180         u32 mac_discard;
 181
 182         u32 driver_xoff;
 183         u32 rx_err_discard_pkt;
 184         u32 rx_skb_alloc_failed;
 185         u32 hw_csum_err;
 186
 187         u32 nig_timer_max;
 188
 189         /* TPA */
 190         u32 total_tpa_aggregations_hi;
 191         u32 total_tpa_aggregations_lo;
 192         u32 total_tpa_aggregated_frames_hi;
 193         u32 total_tpa_aggregated_frames_lo;
 194         u32 total_tpa_bytes_hi;
 195         u32 total_tpa_bytes_lo;
 196
 197         /* PFC */
 198         u32 pfc_frames_received_hi;
 199         u32 pfc_frames_received_lo;
 200         u32 pfc_frames_sent_hi;
 201         u32 pfc_frames_sent_lo;
 202
 203         /* Recovery */
 204         u32 recoverable_error;
 205         u32 unrecoverable_error;
 206         u32 driver_filtered_tx_pkt;
 207         /* src: Clear-on-Read register; Will not survive PMF Migration */
 208         u32 eee_tx_lpi;
 209 };
 210
 211
 212 struct bnx2x_eth_q_stats {
 213         u32 total_unicast_bytes_received_hi;
 214         u32 total_unicast_bytes_received_lo;
 215         u32 total_broadcast_bytes_received_hi;
 216         u32 total_broadcast_bytes_received_lo;
 217         u32 total_multicast_bytes_received_hi;
 218         u32 total_multicast_bytes_received_lo;
 219         u32 total_bytes_received_hi;
 220         u32 total_bytes_received_lo;
 221         u32 total_unicast_bytes_transmitted_hi;
 222         u32 total_unicast_bytes_transmitted_lo;
 223         u32 total_broadcast_bytes_transmitted_hi;
 224         u32 total_broadcast_bytes_transmitted_lo;
 225         u32 total_multicast_bytes_transmitted_hi;
 226         u32 total_multicast_bytes_transmitted_lo;
 227         u32 total_bytes_transmitted_hi;
 228         u32 total_bytes_transmitted_lo;
 229         u32 total_unicast_packets_received_hi;
 230         u32 total_unicast_packets_received_lo;
 231         u32 total_multicast_packets_received_hi;
 232         u32 total_multicast_packets_received_lo;
 233         u32 total_broadcast_packets_received_hi;
 234         u32 total_broadcast_packets_received_lo;
 235         u32 total_unicast_packets_transmitted_hi;
 236         u32 total_unicast_packets_transmitted_lo;
 237         u32 total_multicast_packets_transmitted_hi;
 238         u32 total_multicast_packets_transmitted_lo;
 239         u32 total_broadcast_packets_transmitted_hi;
 240         u32 total_broadcast_packets_transmitted_lo;
 241         u32 valid_bytes_received_hi;
 242         u32 valid_bytes_received_lo;
 243
 244         u32 etherstatsoverrsizepkts_hi;
 245         u32 etherstatsoverrsizepkts_lo;
 246         u32 no_buff_discard_hi;
 247         u32 no_buff_discard_lo;
 248
 249         u32 driver_xoff;
 250         u32 rx_err_discard_pkt;
 251         u32 rx_skb_alloc_failed;
 252         u32 hw_csum_err;
 253
 254         u32 total_packets_received_checksum_discarded_hi;
 255         u32 total_packets_received_checksum_discarded_lo;
 256         u32 total_packets_received_ttl0_discarded_hi;
 257         u32 total_packets_received_ttl0_discarded_lo;
 258         u32 total_transmitted_dropped_packets_error_hi;
 259         u32 total_transmitted_dropped_packets_error_lo;
 260
 261         /* TPA */
 262         u32 total_tpa_aggregations_hi;
 263         u32 total_tpa_aggregations_lo;
 264         u32 total_tpa_aggregated_frames_hi;
 265         u32 total_tpa_aggregated_frames_lo;
 266         u32 total_tpa_bytes_hi;
 267         u32 total_tpa_bytes_lo;
 268         u32 driver_filtered_tx_pkt;
 269 };
 270
 271 struct bnx2x_eth_stats_old {
 272         u32 rx_stat_dot3statsframestoolong_hi;
 273         u32 rx_stat_dot3statsframestoolong_lo;
 274 };
 275
 276 struct bnx2x_eth_q_stats_old {
 277         /* Fields to perserve over fw reset*/
 278         u32 total_unicast_bytes_received_hi;
 279         u32 total_unicast_bytes_received_lo;
 280         u32 total_broadcast_bytes_received_hi;
 281         u32 total_broadcast_bytes_received_lo;
 282         u32 total_multicast_bytes_received_hi;
 283         u32 total_multicast_bytes_received_lo;
 284         u32 total_unicast_bytes_transmitted_hi;
 285         u32 total_unicast_bytes_transmitted_lo;
 286         u32 total_broadcast_bytes_transmitted_hi;
 287         u32 total_broadcast_bytes_transmitted_lo;
 288         u32 total_multicast_bytes_transmitted_hi;
 289         u32 total_multicast_bytes_transmitted_lo;
 290         u32 total_tpa_bytes_hi;
 291         u32 total_tpa_bytes_lo;
 292
 293         /* Fields to perserve last of */
 294         u32 total_bytes_received_hi;
 295         u32 total_bytes_received_lo;
 296         u32 total_bytes_transmitted_hi;
 297         u32 total_bytes_transmitted_lo;
 298         u32 total_unicast_packets_received_hi;
 299         u32 total_unicast_packets_received_lo;
 300         u32 total_multicast_packets_received_hi;
 301         u32 total_multicast_packets_received_lo;
 302         u32 total_broadcast_packets_received_hi;
 303         u32 total_broadcast_packets_received_lo;
 304         u32 total_unicast_packets_transmitted_hi;
 305         u32 total_unicast_packets_transmitted_lo;
 306         u32 total_multicast_packets_transmitted_hi;
 307         u32 total_multicast_packets_transmitted_lo;
 308         u32 total_broadcast_packets_transmitted_hi;
 309         u32 total_broadcast_packets_transmitted_lo;
 310         u32 valid_bytes_received_hi;
 311         u32 valid_bytes_received_lo;
 312
 313         u32 total_tpa_bytes_hi_old;
 314         u32 total_tpa_bytes_lo_old;
 315
 316         u32 driver_xoff_old;
 317         u32 rx_err_discard_pkt_old;
 318         u32 rx_skb_alloc_failed_old;
 319         u32 hw_csum_err_old;
 320         u32 driver_filtered_tx_pkt_old;
 321 };
 322
 323 struct bnx2x_net_stats_old {
 324          u32 rx_dropped;
 325 };
 326
 327 struct bnx2x_fw_port_stats_old {
 328          u32 mac_filter_discard;
 329          u32 mf_tag_discard;
 330          u32 brb_truncate_discard;
 331          u32 mac_discard;
 332 };
 333
 334
 335 /****************************************************************************
 336 * Macros
 337 ****************************************************************************/
 338
 339 /* sum[hi:lo] += add[hi:lo] */
 340 #define ADD_64(s_hi, a_hi, s_lo, a_lo) \
 341         do { \
 342                 s_lo += a_lo; \
 343                 s_hi += a_hi + ((s_lo < a_lo) ? 1 : 0); \
 344         } while (0)
 345
 346 #define LE32_0 ((__force __le32) 0)
 347 #define LE16_0 ((__force __le16) 0)
 348
 349 /* The _force is for cases where high value is 0 */
 350 #define ADD_64_LE(s_hi, a_hi_le, s_lo, a_lo_le) \
 351                 ADD_64(s_hi, le32_to_cpu(a_hi_le), \
 352                        s_lo, le32_to_cpu(a_lo_le))
 353
 354 #define ADD_64_LE16(s_hi, a_hi_le, s_lo, a_lo_le) \
 355                 ADD_64(s_hi, le16_to_cpu(a_hi_le), \
 356                        s_lo, le16_to_cpu(a_lo_le))
 357
 358 /* difference = minuend - subtrahend */
 359 #define DIFF_64(d_hi, m_hi, s_hi, d_lo, m_lo, s_lo) \
 360         do { \
 361                 if (m_lo < s_lo) { \
 362                         /* underflow */ \
 363                         d_hi = m_hi - s_hi; \
 364                         if (d_hi > 0) { \
 365                                 /* we can 'loan' 1 */ \
 366                                 d_hi--; \
 367                                 d_lo = m_lo + (UINT_MAX - s_lo) + 1; \
 368                         } else { \
 369                                 /* m_hi <= s_hi */ \
 370                                 d_hi = 0; \
 371                                 d_lo = 0; \
 372                         } \
 373                 } else { \
 374                         /* m_lo >= s_lo */ \
 375                         if (m_hi < s_hi) { \
 376                                 d_hi = 0; \
 377                                 d_lo = 0; \
 378                         } else { \
 379                                 /* m_hi >= s_hi */ \
 380                                 d_hi = m_hi - s_hi; \
 381                                 d_lo = m_lo - s_lo; \
 382                         } \
 383                 } \
 384         } while (0)
 385
 386 #define UPDATE_STAT64(s, t) \
 387         do { \
 388                 DIFF_64(diff.hi, new->s##_hi, pstats->mac_stx[0].t##_hi, \
 389                         diff.lo, new->s##_lo, pstats->mac_stx[0].t##_lo); \
 390                 pstats->mac_stx[0].t##_hi = new->s##_hi; \
 391                 pstats->mac_stx[0].t##_lo = new->s##_lo; \
 392                 ADD_64(pstats->mac_stx[1].t##_hi, diff.hi, \
 393                        pstats->mac_stx[1].t##_lo, diff.lo); \
 394         } while (0)
 395
 396 #define UPDATE_STAT64_NIG(s, t) \
 397         do { \
 398                 DIFF_64(diff.hi, new->s##_hi, old->s##_hi, \
 399                         diff.lo, new->s##_lo, old->s##_lo); \
 400                 ADD_64(estats->t##_hi, diff.hi, \
 401                        estats->t##_lo, diff.lo); \
 402         } while (0)
 403
 404 /* sum[hi:lo] += add */
 405 #define ADD_EXTEND_64(s_hi, s_lo, a) \
 406         do { \
 407                 s_lo += a; \
 408                 s_hi += (s_lo < a) ? 1 : 0; \
 409         } while (0)
 410
 411 #define ADD_STAT64(diff, t) \
 412         do { \
 413                 ADD_64(pstats->mac_stx[1].t##_hi, new->diff##_hi, \
 414                        pstats->mac_stx[1].t##_lo, new->diff##_lo); \
 415         } while (0)
 416
 417 #define UPDATE_EXTEND_STAT(s) \
 418         do { \
 419                 ADD_EXTEND_64(pstats->mac_stx[1].s##_hi, \
 420                               pstats->mac_stx[1].s##_lo, \
 421                               new->s); \
 422         } while (0)
 423
 424 #define UPDATE_EXTEND_TSTAT_X(s, t, size) \
 425         do { \
 426                 diff = le##size##_to_cpu(tclient->s) - \
 427                        le##size##_to_cpu(old_tclient->s); \
 428                 old_tclient->s = tclient->s; \
 429                 ADD_EXTEND_64(qstats->t##_hi, qstats->t##_lo, diff); \
 430         } while (0)
 431
 432 #define UPDATE_EXTEND_TSTAT(s, t) UPDATE_EXTEND_TSTAT_X(s, t, 32)
 433
 434 #define UPDATE_EXTEND_E_TSTAT(s, t, size) \
 435         do { \
 436                 UPDATE_EXTEND_TSTAT_X(s, t, size); \
 437                 ADD_EXTEND_64(estats->t##_hi, estats->t##_lo, diff); \
 438         } while (0)
 439
 440 #define UPDATE_EXTEND_USTAT(s, t) \
 441         do { \
 442                 diff = le32_to_cpu(uclient->s) - le32_to_cpu(old_uclient->s); \
 443                 old_uclient->s = uclient->s; \
 444                 ADD_EXTEND_64(qstats->t##_hi, qstats->t##_lo, diff); \
 445         } while (0)
 446
 447 #define UPDATE_EXTEND_E_USTAT(s, t) \
 448         do { \
 449                 UPDATE_EXTEND_USTAT(s, t); \
 450                 ADD_EXTEND_64(estats->t##_hi, estats->t##_lo, diff); \
 451         } while (0)
 452
 453 #define UPDATE_EXTEND_XSTAT(s, t) \
 454         do { \
 455                 diff = le32_to_cpu(xclient->s) - le32_to_cpu(old_xclient->s); \
 456                 old_xclient->s = xclient->s; \
 457                 ADD_EXTEND_64(qstats->t##_hi, qstats->t##_lo, diff); \
 458         } while (0)
 459
 460 #define UPDATE_QSTAT(s, t) \
 461         do { \
 462                 qstats->t##_lo = qstats_old->t##_lo + le32_to_cpu(s.lo); \
 463                 qstats->t##_hi = qstats_old->t##_hi + le32_to_cpu(s.hi) \
 464                         + ((qstats->t##_lo < qstats_old->t##_lo) ? 1 : 0); \
 465         } while (0)
 466
 467 #define UPDATE_QSTAT_OLD(f) \
 468         do { \
 469                 qstats_old->f = qstats->f; \
 470         } while (0)
 471
 472 #define UPDATE_ESTAT_QSTAT_64(s) \
 473         do { \
 474                 ADD_64(estats->s##_hi, qstats->s##_hi, \
 475                        estats->s##_lo, qstats->s##_lo); \
 476                 SUB_64(estats->s##_hi, qstats_old->s##_hi_old, \
 477                        estats->s##_lo, qstats_old->s##_lo_old); \
 478                 qstats_old->s##_hi_old = qstats->s##_hi; \
 479                 qstats_old->s##_lo_old = qstats->s##_lo; \
 480         } while (0)
 481
 482 #define UPDATE_ESTAT_QSTAT(s) \
 483         do { \
 484                 estats->s += qstats->s; \
 485                 estats->s -= qstats_old->s##_old; \
 486                 qstats_old->s##_old = qstats->s; \
 487         } while (0)
 488
 489 #define UPDATE_FSTAT_QSTAT(s) \
 490         do { \
 491                 ADD_64(fstats->s##_hi, qstats->s##_hi, \
 492                        fstats->s##_lo, qstats->s##_lo); \
 493                 SUB_64(fstats->s##_hi, qstats_old->s##_hi, \
 494                        fstats->s##_lo, qstats_old->s##_lo); \
 495                 estats->s##_hi = fstats->s##_hi; \
 496                 estats->s##_lo = fstats->s##_lo; \
 497                 qstats_old->s##_hi = qstats->s##_hi; \
 498                 qstats_old->s##_lo = qstats->s##_lo; \
 499         } while (0)
 500
 501 #define UPDATE_FW_STAT(s) \
 502         do { \
 503                 estats->s = le32_to_cpu(tport->s) + fwstats->s; \
 504         } while (0)
 505
 506 #define UPDATE_FW_STAT_OLD(f) \
 507         do { \
 508                 fwstats->f = estats->f; \
 509         } while (0)
 510
 511 #define UPDATE_ESTAT(s, t) \
 512         do { \
 513                 SUB_64(estats->s##_hi, estats_old->t##_hi, \
 514                        estats->s##_lo, estats_old->t##_lo); \
 515                 ADD_64(estats->s##_hi, estats->t##_hi, \
 516                        estats->s##_lo, estats->t##_lo); \
 517                 estats_old->t##_hi = estats->t##_hi; \
 518                 estats_old->t##_lo = estats->t##_lo; \
 519         } while (0)
 520
 521 /* minuend -= subtrahend */
 522 #define SUB_64(m_hi, s_hi, m_lo, s_lo) \
 523         do { \
 524                 DIFF_64(m_hi, m_hi, s_hi, m_lo, m_lo, s_lo); \
 525         } while (0)
 526
 527 /* minuend[hi:lo] -= subtrahend */
 528 #define SUB_EXTEND_64(m_hi, m_lo, s) \
 529         do { \
 530                 SUB_64(m_hi, 0, m_lo, s); \
 531         } while (0)
 532
 533 #define SUB_EXTEND_USTAT(s, t) \
 534         do { \
 535                 diff = le32_to_cpu(uclient->s) - le32_to_cpu(old_uclient->s); \
 536                 SUB_EXTEND_64(qstats->t##_hi, qstats->t##_lo, diff); \
 537         } while (0)
 538
 539
 540 /* forward */
 541 struct bnx2x;
 542
 543 void bnx2x_stats_init(struct bnx2x *bp);
 544
 545 void bnx2x_stats_handle(struct bnx2x *bp, enum bnx2x_stats_event event);
 546
 547 /**
 548  * bnx2x_save_statistics - save statistics when unloading.
 549  *
 550  * @bp:         driver handle
 551  */
 552 void bnx2x_save_statistics(struct bnx2x *bp);
 553
 554 void bnx2x_afex_collect_stats(struct bnx2x *bp, void *void_afex_stats,
 555                               u32 stats_type);
 556 #endif /* BNX2X_STATS_H */