Pileus Git - ~andy/linux/blob - drivers/staging/silicom/bypasslib/bypass.c

   1 /******************************************************************************/
   2 /*                                                                            */
   3 /* bypass library, Copyright (c) 2004-2007 Silicom, Ltd                       */
   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, located in the file LICENSE.                 */
   8 /*                                                                            */
   9 /*                                                                            */
  10 /* bypass.c                                                                    */
  11 /*                                                                            */
  12 /******************************************************************************/
  13
  14 #if defined(CONFIG_SMP) && ! defined(__SMP__)
  15 #define __SMP__
  16 #endif
  17
  18 #include <linux/module.h>
  19 #include <linux/kernel.h>
  20 #include <asm/unistd.h>
  21
  22 #include <linux/sched.h>
  23 #include <linux/wait.h>
  24
  25 #include <linux/netdevice.h>    // struct device, and other headers
  26 #include <linux/kernel_stat.h>
  27 #include <linux/pci.h>
  28 #include <linux/rtnetlink.h>
  29 #include <linux/ethtool.h>
  30
  31 #include <net/net_namespace.h>
  32
  33 #include "bplibk.h"
  34
  35 #define MOD_NAME "bypass"
  36
  37 #define VERSION "\n"MOD_NAME" version 9.0.4\n"
  38
  39 MODULE_AUTHOR("www.silicom.co.il");
  40
  41 MODULE_LICENSE("GPL");
  42
  43 int init_lib_module(void);
  44 void cleanup_lib_module(void);
  45
  46 static int do_cmd(struct net_device *dev, struct ifreq *ifr, int cmd, int *data)
  47 {
  48         int ret = -1;
  49         struct if_bypass *bypass_cb;
  50         static int (*ioctl) (struct net_device *, struct ifreq *, int);
  51
  52         bypass_cb = (struct if_bypass *)ifr;
  53         bypass_cb->cmd = cmd;
  54         bypass_cb->data = *data;
  55         if ((dev->netdev_ops) && (ioctl = dev->netdev_ops->ndo_do_ioctl)) {
  56                 ret = ioctl(dev, ifr, SIOCGIFBYPASS);
  57                 *data = bypass_cb->data;
  58         }
  59
  60         return ret;
  61 }
  62
  63 static int doit(int cmd, int if_index, int *data)
  64 {
  65         struct ifreq ifr;
  66         int ret = -1;
  67         struct net_device *dev;
  68         struct net_device *n;
  69         for_each_netdev_safe(&init_net, dev, n) {
  70
  71                 if (dev->ifindex == if_index) {
  72                         ret = do_cmd(dev, &ifr, cmd, data);
  73                         if (ret < 0)
  74                                 ret = -1;
  75
  76                 }
  77         }
  78
  79         return ret;
  80 }
  81
  82 #define bp_symbol_get(fn_name) symbol_get(fn_name)
  83 #define bp_symbol_put(fn_name) symbol_put(fn_name)
  84
  85 #define SET_BPLIB_INT_FN(fn_name, arg_type, arg, ret) \
  86     ({ int (* fn_ex)(arg_type)=NULL; \
  87     fn_ex=bp_symbol_get(fn_name##_sd); \
  88        if(fn_ex) {  \
  89         ret= fn_ex(arg); \
  90        bp_symbol_put(fn_name##_sd); \
  91        } else ret=-1; \
  92     })
  93
  94 #define  SET_BPLIB_INT_FN2(fn_name, arg_type, arg, arg_type1, arg1, ret) \
  95     ({ int (* fn_ex)(arg_type,arg_type1)=NULL; \
  96         fn_ex=bp_symbol_get(fn_name##_sd); \
  97        if(fn_ex) {  \
  98         ret= fn_ex(arg,arg1); \
  99         bp_symbol_put(fn_name##_sd); \
 100        } else ret=-1; \
 101     })
 102 #define SET_BPLIB_INT_FN3(fn_name, arg_type, arg, arg_type1, arg1,arg_type2, arg2, ret) \
 103     ({ int (* fn_ex)(arg_type,arg_type1, arg_type2)=NULL; \
 104         fn_ex=bp_symbol_get(fn_name##_sd); \
 105        if(fn_ex) {  \
 106         ret= fn_ex(arg,arg1,arg2); \
 107         bp_symbol_put(fn_name##_sd); \
 108        } else ret=-1; \
 109     })
 110
 111 #define DO_BPLIB_GET_ARG_FN(fn_name,ioctl_val, if_index) \
 112     ({    int data, ret=0; \
 113             if(is_dev_sd(if_index)){ \
 114             SET_BPLIB_INT_FN(fn_name, int, if_index, ret); \
 115             return ret; \
 116             }  \
 117             return doit(ioctl_val,if_index, &data); \
 118     })
 119
 120 #define DO_BPLIB_SET_ARG_FN(fn_name,ioctl_val,if_index,arg) \
 121     ({    int data, ret=0; \
 122             if(is_dev_sd(if_index)){ \
 123             SET_BPLIB_INT_FN2(fn_name, int, if_index, int, arg, ret); \
 124             return ret; \
 125             }  \
 126             data=arg; \
 127             return doit(ioctl_val,if_index, &data); \
 128     })
 129
 130 static int is_dev_sd(int if_index)
 131 {
 132         int ret = 0;
 133         SET_BPLIB_INT_FN(is_bypass, int, if_index, ret);
 134         return (ret >= 0 ? 1 : 0);
 135 }
 136
 137 static int is_bypass_dev(int if_index)
 138 {
 139         struct pci_dev *pdev = NULL;
 140         struct net_device *dev = NULL;
 141         struct ifreq ifr;
 142         int ret = 0, data = 0;
 143
 144         while ((pdev = pci_get_class(PCI_CLASS_NETWORK_ETHERNET << 8, pdev))) {
 145                 if ((dev = pci_get_drvdata(pdev)) != NULL)
 146                         if (((dev = pci_get_drvdata(pdev)) != NULL) &&
 147                             (dev->ifindex == if_index)) {
 148                                 if ((pdev->vendor == SILICOM_VID) &&
 149                                     (pdev->device >= SILICOM_BP_PID_MIN) &&
 150                                     (pdev->device <= SILICOM_BP_PID_MAX))
 151                                         goto send_cmd;
 152 #if defined(BP_VENDOR_SUPPORT) && defined(ETHTOOL_GDRVINFO)
 153                                 else {
 154                                         struct ethtool_drvinfo info;
 155                                         const struct ethtool_ops *ops =
 156                                             dev->ethtool_ops;
 157                                         int k = 0;
 158
 159                                         if (ops->get_drvinfo) {
 160                                                 memset(&info, 0, sizeof(info));
 161                                                 info.cmd = ETHTOOL_GDRVINFO;
 162                                                 ops->get_drvinfo(dev, &info);
 163                                                 for (; bp_desc_array[k]; k++)
 164                                                         if (!
 165                                                             (strcmp
 166                                                              (bp_desc_array[k],
 167                                                               info.driver)))
 168                                                                 goto send_cmd;
 169
 170                                         }
 171
 172                                 }
 173 #endif
 174                                 return -1;
 175                         }
 176         }
 177  send_cmd:
 178         ret = do_cmd(dev, &ifr, IS_BYPASS, &data);
 179         return (ret < 0 ? -1 : ret);
 180 }
 181
 182 static int is_bypass(int if_index)
 183 {
 184         int ret = 0;
 185         SET_BPLIB_INT_FN(is_bypass, int, if_index, ret);
 186
 187         if (ret < 0)
 188                 return is_bypass_dev(if_index);
 189         return ret;
 190 }
 191 EXPORT_SYMBOL(is_bypass);
 192
 193 static int get_bypass_slave(int if_index)
 194 {
 195         DO_BPLIB_GET_ARG_FN(get_bypass_slave, GET_BYPASS_SLAVE, if_index);
 196 }
 197 EXPORT_SYMBOL(get_bypass_slave);
 198
 199 static int get_bypass_caps(int if_index)
 200 {
 201         DO_BPLIB_GET_ARG_FN(get_bypass_caps, GET_BYPASS_CAPS, if_index);
 202 }
 203 EXPORT_SYMBOL(get_bypass_caps);
 204
 205 static int get_wd_set_caps(int if_index)
 206 {
 207         DO_BPLIB_GET_ARG_FN(get_wd_set_caps, GET_WD_SET_CAPS, if_index);
 208 }
 209 EXPORT_SYMBOL(get_wd_set_caps);
 210
 211 static int set_bypass(int if_index, int bypass_mode)
 212 {
 213         DO_BPLIB_SET_ARG_FN(set_bypass, SET_BYPASS, if_index, bypass_mode);
 214 }
 215 EXPORT_SYMBOL(set_bypass);
 216
 217 static int get_bypass(int if_index)
 218 {
 219         DO_BPLIB_GET_ARG_FN(get_bypass, GET_BYPASS, if_index);
 220 }
 221 EXPORT_SYMBOL(get_bypass);
 222
 223 static int get_bypass_change(int if_index)
 224 {
 225         DO_BPLIB_GET_ARG_FN(get_bypass_change, GET_BYPASS_CHANGE, if_index);
 226 }
 227 EXPORT_SYMBOL(get_bypass_change);
 228
 229 static int set_dis_bypass(int if_index, int dis_bypass)
 230 {
 231         DO_BPLIB_SET_ARG_FN(set_dis_bypass, SET_DIS_BYPASS, if_index,
 232                             dis_bypass);
 233 }
 234 EXPORT_SYMBOL(set_dis_bypass);
 235
 236 static int get_dis_bypass(int if_index)
 237 {
 238         DO_BPLIB_GET_ARG_FN(get_dis_bypass, GET_DIS_BYPASS, if_index);
 239 }
 240 EXPORT_SYMBOL(get_dis_bypass);
 241
 242 static int set_bypass_pwoff(int if_index, int bypass_mode)
 243 {
 244         DO_BPLIB_SET_ARG_FN(set_bypass_pwoff, SET_BYPASS_PWOFF, if_index,
 245                             bypass_mode);
 246 }
 247 EXPORT_SYMBOL(set_bypass_pwoff);
 248
 249 static int get_bypass_pwoff(int if_index)
 250 {
 251         DO_BPLIB_GET_ARG_FN(get_bypass_pwoff, GET_BYPASS_PWOFF, if_index);
 252 }
 253 EXPORT_SYMBOL(get_bypass_pwoff);
 254
 255 static int set_bypass_pwup(int if_index, int bypass_mode)
 256 {
 257         DO_BPLIB_SET_ARG_FN(set_bypass_pwup, SET_BYPASS_PWUP, if_index,
 258                             bypass_mode);
 259 }
 260 EXPORT_SYMBOL(set_bypass_pwup);
 261
 262 static int get_bypass_pwup(int if_index)
 263 {
 264         DO_BPLIB_GET_ARG_FN(get_bypass_pwup, GET_BYPASS_PWUP, if_index);
 265 }
 266 EXPORT_SYMBOL(get_bypass_pwup);
 267
 268 static int set_bypass_wd(int if_index, int ms_timeout, int *ms_timeout_set)
 269 {
 270         int data = ms_timeout, ret = 0;
 271         if (is_dev_sd(if_index))
 272                 SET_BPLIB_INT_FN3(set_bypass_wd, int, if_index, int, ms_timeout,
 273                                   int *, ms_timeout_set, ret);
 274         else {
 275                 ret = doit(SET_BYPASS_WD, if_index, &data);
 276                 if (ret > 0) {
 277                         *ms_timeout_set = ret;
 278                         ret = 0;
 279                 }
 280         }
 281         return ret;
 282 }
 283 EXPORT_SYMBOL(set_bypass_wd);
 284
 285 static int get_bypass_wd(int if_index, int *ms_timeout_set)
 286 {
 287         int *data = ms_timeout_set, ret = 0;
 288         if (is_dev_sd(if_index))
 289                 SET_BPLIB_INT_FN2(get_bypass_wd, int, if_index, int *,
 290                                   ms_timeout_set, ret);
 291         else
 292                 ret = doit(GET_BYPASS_WD, if_index, data);
 293         return ret;
 294 }
 295 EXPORT_SYMBOL(get_bypass_wd);
 296
 297 static int get_wd_expire_time(int if_index, int *ms_time_left)
 298 {
 299         int *data = ms_time_left, ret = 0;
 300         if (is_dev_sd(if_index))
 301                 SET_BPLIB_INT_FN2(get_wd_expire_time, int, if_index, int *,
 302                                   ms_time_left, ret);
 303         else {
 304                 ret = doit(GET_WD_EXPIRE_TIME, if_index, data);
 305                 if ((ret == 0) && (*data != 0))
 306                         ret = 1;
 307         }
 308         return ret;
 309 }
 310 EXPORT_SYMBOL(get_wd_expire_time);
 311
 312 static int reset_bypass_wd_timer(int if_index)
 313 {
 314         DO_BPLIB_GET_ARG_FN(reset_bypass_wd_timer, RESET_BYPASS_WD_TIMER,
 315                             if_index);
 316 }
 317 EXPORT_SYMBOL(reset_bypass_wd_timer);
 318
 319 static int set_std_nic(int if_index, int bypass_mode)
 320 {
 321         DO_BPLIB_SET_ARG_FN(set_std_nic, SET_STD_NIC, if_index, bypass_mode);
 322 }
 323 EXPORT_SYMBOL(set_std_nic);
 324
 325 static int get_std_nic(int if_index)
 326 {
 327         DO_BPLIB_GET_ARG_FN(get_std_nic, GET_STD_NIC, if_index);
 328 }
 329 EXPORT_SYMBOL(get_std_nic);
 330
 331 static int set_tx(int if_index, int tx_state)
 332 {
 333         DO_BPLIB_SET_ARG_FN(set_tx, SET_TX, if_index, tx_state);
 334 }
 335 EXPORT_SYMBOL(set_tx);
 336
 337 static int get_tx(int if_index)
 338 {
 339         DO_BPLIB_GET_ARG_FN(get_tx, GET_TX, if_index);
 340 }
 341 EXPORT_SYMBOL(get_tx);
 342
 343 static int set_tap(int if_index, int tap_mode)
 344 {
 345         DO_BPLIB_SET_ARG_FN(set_tap, SET_TAP, if_index, tap_mode);
 346 }
 347 EXPORT_SYMBOL(set_tap);
 348
 349 static int get_tap(int if_index)
 350 {
 351         DO_BPLIB_GET_ARG_FN(get_tap, GET_TAP, if_index);
 352 }
 353 EXPORT_SYMBOL(get_tap);
 354
 355 static int get_tap_change(int if_index)
 356 {
 357         DO_BPLIB_GET_ARG_FN(get_tap_change, GET_TAP_CHANGE, if_index);
 358 }
 359 EXPORT_SYMBOL(get_tap_change);
 360
 361 static int set_dis_tap(int if_index, int dis_tap)
 362 {
 363         DO_BPLIB_SET_ARG_FN(set_dis_tap, SET_DIS_TAP, if_index, dis_tap);
 364 }
 365 EXPORT_SYMBOL(set_dis_tap);
 366
 367 static int get_dis_tap(int if_index)
 368 {
 369         DO_BPLIB_GET_ARG_FN(get_dis_tap, GET_DIS_TAP, if_index);
 370 }
 371 EXPORT_SYMBOL(get_dis_tap);
 372
 373 static int set_tap_pwup(int if_index, int tap_mode)
 374 {
 375         DO_BPLIB_SET_ARG_FN(set_tap_pwup, SET_TAP_PWUP, if_index, tap_mode);
 376 }
 377 EXPORT_SYMBOL(set_tap_pwup);
 378
 379 static int get_tap_pwup(int if_index)
 380 {
 381         DO_BPLIB_GET_ARG_FN(get_tap_pwup, GET_TAP_PWUP, if_index);
 382 }
 383 EXPORT_SYMBOL(get_tap_pwup);
 384
 385 static int set_bp_disc(int if_index, int disc_mode)
 386 {
 387         DO_BPLIB_SET_ARG_FN(set_bp_disc, SET_DISC, if_index, disc_mode);
 388 }
 389 EXPORT_SYMBOL(set_bp_disc);
 390
 391 static int get_bp_disc(int if_index)
 392 {
 393         DO_BPLIB_GET_ARG_FN(get_bp_disc, GET_DISC, if_index);
 394 }
 395 EXPORT_SYMBOL(get_bp_disc);
 396
 397 static int get_bp_disc_change(int if_index)
 398 {
 399         DO_BPLIB_GET_ARG_FN(get_bp_disc_change, GET_DISC_CHANGE, if_index);
 400 }
 401 EXPORT_SYMBOL(get_bp_disc_change);
 402
 403 static int set_bp_dis_disc(int if_index, int dis_disc)
 404 {
 405         DO_BPLIB_SET_ARG_FN(set_bp_dis_disc, SET_DIS_DISC, if_index, dis_disc);
 406 }
 407 EXPORT_SYMBOL(set_bp_dis_disc);
 408
 409 static int get_bp_dis_disc(int if_index)
 410 {
 411         DO_BPLIB_GET_ARG_FN(get_bp_dis_disc, GET_DIS_DISC, if_index);
 412 }
 413 EXPORT_SYMBOL(get_bp_dis_disc);
 414
 415 static int set_bp_disc_pwup(int if_index, int disc_mode)
 416 {
 417         DO_BPLIB_SET_ARG_FN(set_bp_disc_pwup, SET_DISC_PWUP, if_index,
 418                             disc_mode);
 419 }
 420 EXPORT_SYMBOL(set_bp_disc_pwup);
 421
 422 static int get_bp_disc_pwup(int if_index)
 423 {
 424         DO_BPLIB_GET_ARG_FN(get_bp_disc_pwup, GET_DISC_PWUP, if_index);
 425 }
 426 EXPORT_SYMBOL(get_bp_disc_pwup);
 427
 428 static int set_wd_exp_mode(int if_index, int mode)
 429 {
 430         DO_BPLIB_SET_ARG_FN(set_wd_exp_mode, SET_WD_EXP_MODE, if_index, mode);
 431 }
 432 EXPORT_SYMBOL(set_wd_exp_mode);
 433
 434 static int get_wd_exp_mode(int if_index)
 435 {
 436         DO_BPLIB_GET_ARG_FN(get_wd_exp_mode, GET_WD_EXP_MODE, if_index);
 437 }
 438 EXPORT_SYMBOL(get_wd_exp_mode);
 439
 440 static int set_wd_autoreset(int if_index, int time)
 441 {
 442         DO_BPLIB_SET_ARG_FN(set_wd_autoreset, SET_WD_AUTORESET, if_index, time);
 443 }
 444 EXPORT_SYMBOL(set_wd_autoreset);
 445
 446 static int get_wd_autoreset(int if_index)
 447 {
 448         DO_BPLIB_GET_ARG_FN(get_wd_autoreset, GET_WD_AUTORESET, if_index);
 449 }
 450 EXPORT_SYMBOL(get_wd_autoreset);
 451
 452 static int set_tpl(int if_index, int tpl_mode)
 453 {
 454         DO_BPLIB_SET_ARG_FN(set_tpl, SET_TPL, if_index, tpl_mode);
 455 }
 456 EXPORT_SYMBOL(set_tpl);
 457
 458 static int get_tpl(int if_index)
 459 {
 460         DO_BPLIB_GET_ARG_FN(get_tpl, GET_TPL, if_index);
 461 }
 462 EXPORT_SYMBOL(get_tpl);
 463
 464 static int set_bp_hw_reset(int if_index, int mode)
 465 {
 466         DO_BPLIB_SET_ARG_FN(set_tpl, SET_BP_HW_RESET, if_index, mode);
 467 }
 468 EXPORT_SYMBOL(set_bp_hw_reset);
 469
 470 static int get_bp_hw_reset(int if_index)
 471 {
 472         DO_BPLIB_GET_ARG_FN(get_tpl, GET_BP_HW_RESET, if_index);
 473 }
 474 EXPORT_SYMBOL(get_bp_hw_reset);
 475
 476 static int get_bypass_info(int if_index, struct bp_info *bp_info)
 477 {
 478         int ret = 0;
 479         if (is_dev_sd(if_index)) {
 480                 SET_BPLIB_INT_FN2(get_bypass_info, int, if_index,
 481                                   struct bp_info *, bp_info, ret);
 482         } else {
 483                 static int (*ioctl) (struct net_device *, struct ifreq *, int);
 484                 struct net_device *dev;
 485
 486                 struct net_device *n;
 487                 for_each_netdev_safe(&init_net, dev, n) {
 488                         if (dev->ifindex == if_index) {
 489                                 struct if_bypass_info *bypass_cb;
 490                                 struct ifreq ifr;
 491
 492                                 memset(&ifr, 0, sizeof(ifr));
 493                                 bypass_cb = (struct if_bypass_info *)&ifr;
 494                                 bypass_cb->cmd = GET_BYPASS_INFO;
 495
 496                                 if ((dev->netdev_ops) &&
 497                                     (ioctl = dev->netdev_ops->ndo_do_ioctl)) {
 498                                         ret = ioctl(dev, &ifr, SIOCGIFBYPASS);
 499                                 }
 500
 501                                 else
 502                                         ret = -1;
 503                                 if (ret == 0)
 504                                         memcpy(bp_info, &bypass_cb->bp_info,
 505                                                sizeof(struct bp_info));
 506                                 ret = (ret < 0 ? -1 : 0);
 507                                 break;
 508                         }
 509                 }
 510         }
 511         return ret;
 512 }
 513 EXPORT_SYMBOL(get_bypass_info);
 514
 515 int init_lib_module(void)
 516 {
 517
 518         printk(VERSION);
 519         return 0;
 520 }
 521
 522 void cleanup_lib_module(void)
 523 {
 524 }
 525
 526 module_init(init_lib_module);
 527 module_exit(cleanup_lib_module);