1/* 2 * Ioctl handler 3 * Linux ethernet bridge 4 * 5 * Authors: 6 * Lennert Buytenhek <buytenh@gnu.org> 7 * 8 * This program is free software; you can redistribute it and/or 9 * modify it under the terms of the GNU General Public License 10 * as published by the Free Software Foundation; either version 11 * 2 of the License, or (at your option) any later version. 12 */ 13 14#include <linux/capability.h> 15#include <linux/kernel.h> 16#include <linux/if_bridge.h> 17#include <linux/netdevice.h> 18#include <linux/slab.h> 19#include <linux/times.h> 20#include <net/net_namespace.h> 21#include <asm/uaccess.h> 22#include "br_private.h" 23#ifdef HNDCTF 24#include <ctf/hndctf.h> 25#endif /* HNDCTF */ 26 27/* Foxconn add start, Zz Shan@MutiSsidControl 03/13/2009*/ 28#ifdef MULTIPLE_SSID 29 30/*foxconn modified start, water, 01/07/10*/ 31//#include "../../../../router/multissidcontrol/MultiSsidControl.h" 32#include "../../../../../../ap/acos/multissidcontrol/MultiSsidControl.h" 33/*foxconn modified end, water, 01/07/10*/ 34 35T_MSsidCtlProfile *gProfile = NULL; 36int gProfilenum = 0; 37/* Foxconn added start pling 10/06/2010 */ 38T_MSsidCtlProfile *gProfile_5g = NULL; 39int gProfilenum_5g = 0; 40/* Foxconn added end pling 10/06/2010 */ 41 42EXPORT_SYMBOL(gProfilenum); 43EXPORT_SYMBOL(gProfilenum_5g); 44EXPORT_SYMBOL(gProfile); 45EXPORT_SYMBOL(gProfile_5g); 46 47/*Fxcn added start by dennis,02/16/2012,for access control*/ 48#ifdef INCLUDE_ACCESSCONTROL 49#include "../../../../../../ap/acos/access_control/AccessControl.h" 50/*Fxcn added end by dennis,02/16/2012,for access control*/ 51/*Fxcn added start by dennis,02/16/2012,for access control*/ 52T_AccessControlTable *gAccessTable = NULL; 53int gAccessControlMode = 0; /*0:access control disabled,1:access all new devices,2:block all new devices*/ 54int gAccessTablenum = 0; 55/*Fxcn added end by dennis,02/16/2012,for access control*/ 56/*Foxconn add start by Hank 08/29/2012*/ 57EXPORT_SYMBOL(gAccessTable); 58EXPORT_SYMBOL(gAccessControlMode); 59EXPORT_SYMBOL(gAccessTablenum); 60/*Foxconn add end by Hank 08/29/2012*/ 61#endif 62void profileprint(void) 63{ 64 int i = 0; 65 for (i = 0;i < gProfilenum;i++) 66 { 67 printk("<0>Profile[%d]:name:%s,enable:%d\n",i,gProfile[i].IfName,gProfile[i].enable); 68 } 69 for (i = 0;i < gProfilenum_5g;i++) 70 { 71 printk("<0>Profile_5g[%d]:name:%s,enable:%d\n",i,gProfile_5g[i].IfName,gProfile_5g[i].enable); 72 } 73} 74#endif 75/* Foxconn add end, Zz Shan 03/13/2009*/ 76 77/* called with RTNL */ 78static int get_bridge_ifindices(struct net *net, int *indices, int num) 79{ 80 struct net_device *dev; 81 int i = 0; 82 83 for_each_netdev(net, dev) { 84 if (i >= num) 85 break; 86 if (dev->priv_flags & IFF_EBRIDGE) 87 indices[i++] = dev->ifindex; 88 } 89 90 return i; 91} 92 93/* called with RTNL */ 94static void get_port_ifindices(struct net_bridge *br, int *ifindices, int num) 95{ 96 struct net_bridge_port *p; 97 98 list_for_each_entry(p, &br->port_list, list) { 99 if (p->port_no < num) 100 ifindices[p->port_no] = p->dev->ifindex; 101 } 102} 103 104/* 105 * Format up to a page worth of forwarding table entries 106 * userbuf -- where to copy result 107 * maxnum -- maximum number of entries desired 108 * (limited to a page for sanity) 109 * offset -- number of records to skip 110 */ 111static int get_fdb_entries(struct net_bridge *br, void __user *userbuf, 112 unsigned long maxnum, unsigned long offset) 113{ 114 int num; 115 void *buf; 116 size_t size; 117 118 /* Clamp size to PAGE_SIZE, test maxnum to avoid overflow */ 119 if (maxnum > PAGE_SIZE/sizeof(struct __fdb_entry)) 120 maxnum = PAGE_SIZE/sizeof(struct __fdb_entry); 121 122 size = maxnum * sizeof(struct __fdb_entry); 123 124 buf = kmalloc(size, GFP_USER); 125 if (!buf) 126 return -ENOMEM; 127 128 num = br_fdb_fillbuf(br, buf, maxnum, offset); 129 if (num > 0) { 130 if (copy_to_user(userbuf, buf, num*sizeof(struct __fdb_entry))) 131 num = -EFAULT; 132 } 133 kfree(buf); 134 135 return num; 136} 137 138/* called with RTNL */ 139static int add_del_if(struct net_bridge *br, int ifindex, int isadd) 140{ 141 struct net_device *dev; 142 int ret; 143 144 if (!capable(CAP_NET_ADMIN)) 145 return -EPERM; 146 147 dev = __dev_get_by_index(dev_net(br->dev), ifindex); 148 if (dev == NULL) 149 return -EINVAL; 150 151 if (isadd) 152 ret = br_add_if(br, dev); 153 else 154 ret = br_del_if(br, dev); 155 156 return ret; 157} 158 159/* 160 * Legacy ioctl's through SIOCDEVPRIVATE 161 * This interface is deprecated because it was too difficult to 162 * to do the translation for 32/64bit ioctl compatability. 163 */ 164static int old_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 165{ 166 struct net_bridge *br = netdev_priv(dev); 167 unsigned long args[4]; 168 169 if (copy_from_user(args, rq->ifr_data, sizeof(args))) 170 return -EFAULT; 171 172 switch (args[0]) { 173 case BRCTL_ADD_IF: 174 case BRCTL_DEL_IF: 175 return add_del_if(br, args[1], args[0] == BRCTL_ADD_IF); 176 177 case BRCTL_GET_BRIDGE_INFO: 178 { 179 struct __bridge_info b; 180 181 memset(&b, 0, sizeof(struct __bridge_info)); 182 rcu_read_lock(); 183 memcpy(&b.designated_root, &br->designated_root, 8); 184 memcpy(&b.bridge_id, &br->bridge_id, 8); 185 b.root_path_cost = br->root_path_cost; 186 b.max_age = jiffies_to_clock_t(br->max_age); 187 b.hello_time = jiffies_to_clock_t(br->hello_time); 188 b.forward_delay = br->forward_delay; 189 b.bridge_max_age = br->bridge_max_age; 190 b.bridge_hello_time = br->bridge_hello_time; 191 b.bridge_forward_delay = jiffies_to_clock_t(br->bridge_forward_delay); 192 b.topology_change = br->topology_change; 193 b.topology_change_detected = br->topology_change_detected; 194 b.root_port = br->root_port; 195 196 b.stp_enabled = (br->stp_enabled != BR_NO_STP); 197 b.ageing_time = jiffies_to_clock_t(br->ageing_time); 198 b.hello_timer_value = br_timer_value(&br->hello_timer); 199 b.tcn_timer_value = br_timer_value(&br->tcn_timer); 200 b.topology_change_timer_value = br_timer_value(&br->topology_change_timer); 201 b.gc_timer_value = br_timer_value(&br->gc_timer); 202 rcu_read_unlock(); 203 204 if (copy_to_user((void __user *)args[1], &b, sizeof(b))) 205 return -EFAULT; 206 207 return 0; 208 } 209 210 case BRCTL_GET_PORT_LIST: 211 { 212 int num, *indices; 213 214 num = args[2]; 215 if (num < 0) 216 return -EINVAL; 217 if (num == 0) 218 num = 256; 219 if (num > BR_MAX_PORTS) 220 num = BR_MAX_PORTS; 221 222 indices = kcalloc(num, sizeof(int), GFP_KERNEL); 223 if (indices == NULL) 224 return -ENOMEM; 225 226 get_port_ifindices(br, indices, num); 227 if (copy_to_user((void __user *)args[1], indices, num*sizeof(int))) 228 num = -EFAULT; 229 kfree(indices); 230 return num; 231 } 232 233 case BRCTL_SET_BRIDGE_FORWARD_DELAY: 234 if (!capable(CAP_NET_ADMIN)) 235 return -EPERM; 236 237 spin_lock_bh(&br->lock); 238 br->bridge_forward_delay = clock_t_to_jiffies(args[1]); 239 if (br_is_root_bridge(br)) 240 br->forward_delay = br->bridge_forward_delay; 241 spin_unlock_bh(&br->lock); 242 return 0; 243 244 case BRCTL_SET_BRIDGE_HELLO_TIME: 245 { 246 unsigned long t = clock_t_to_jiffies(args[1]); 247 if (!capable(CAP_NET_ADMIN)) 248 return -EPERM; 249 250 if (t < HZ) 251 return -EINVAL; 252 253 spin_lock_bh(&br->lock); 254 br->bridge_hello_time = t; 255 if (br_is_root_bridge(br)) 256 br->hello_time = br->bridge_hello_time; 257 spin_unlock_bh(&br->lock); 258 return 0; 259 } 260 261 case BRCTL_SET_BRIDGE_MAX_AGE: 262 if (!capable(CAP_NET_ADMIN)) 263 return -EPERM; 264 265 spin_lock_bh(&br->lock); 266 br->bridge_max_age = clock_t_to_jiffies(args[1]); 267 if (br_is_root_bridge(br)) 268 br->max_age = br->bridge_max_age; 269 spin_unlock_bh(&br->lock); 270 return 0; 271 272 case BRCTL_SET_AGEING_TIME: 273 if (!capable(CAP_NET_ADMIN)) 274 return -EPERM; 275 276 br->ageing_time = clock_t_to_jiffies(args[1]); 277 return 0; 278 279 case BRCTL_GET_PORT_INFO: 280 { 281 struct __port_info p; 282 struct net_bridge_port *pt; 283 284 rcu_read_lock(); 285 if ((pt = br_get_port(br, args[2])) == NULL) { 286 rcu_read_unlock(); 287 return -EINVAL; 288 } 289 290 memset(&p, 0, sizeof(struct __port_info)); 291 memcpy(&p.designated_root, &pt->designated_root, 8); 292 memcpy(&p.designated_bridge, &pt->designated_bridge, 8); 293 p.port_id = pt->port_id; 294 p.designated_port = pt->designated_port; 295 p.path_cost = pt->path_cost; 296 p.designated_cost = pt->designated_cost; 297 p.state = pt->state; 298 p.top_change_ack = pt->topology_change_ack; 299 p.config_pending = pt->config_pending; 300 p.message_age_timer_value = br_timer_value(&pt->message_age_timer); 301 p.forward_delay_timer_value = br_timer_value(&pt->forward_delay_timer); 302 p.hold_timer_value = br_timer_value(&pt->hold_timer); 303 304 rcu_read_unlock(); 305 306 if (copy_to_user((void __user *)args[1], &p, sizeof(p))) 307 return -EFAULT; 308 309 return 0; 310 } 311 312 case BRCTL_SET_BRIDGE_STP_STATE: 313 if (!capable(CAP_NET_ADMIN)) 314 return -EPERM; 315 316 br_stp_set_enabled(br, args[1]); 317 return 0; 318 319 case BRCTL_SET_BRIDGE_PRIORITY: 320 if (!capable(CAP_NET_ADMIN)) 321 return -EPERM; 322 323 spin_lock_bh(&br->lock); 324 br_stp_set_bridge_priority(br, args[1]); 325 spin_unlock_bh(&br->lock); 326 return 0; 327 328 case BRCTL_SET_PORT_PRIORITY: 329 { 330 struct net_bridge_port *p; 331 int ret = 0; 332 333 if (!capable(CAP_NET_ADMIN)) 334 return -EPERM; 335 336 if (args[2] >= (1<<(16-BR_PORT_BITS))) 337 return -ERANGE; 338 339 spin_lock_bh(&br->lock); 340 if ((p = br_get_port(br, args[1])) == NULL) 341 ret = -EINVAL; 342 else 343 br_stp_set_port_priority(p, args[2]); 344 spin_unlock_bh(&br->lock); 345 return ret; 346 } 347 348 case BRCTL_SET_PATH_COST: 349 { 350 struct net_bridge_port *p; 351 int ret = 0; 352 353 if (!capable(CAP_NET_ADMIN)) 354 return -EPERM; 355 356 if ((p = br_get_port(br, args[1])) == NULL) 357 ret = -EINVAL; 358 else 359 br_stp_set_path_cost(p, args[2]); 360 361 return ret; 362 } 363 364 case BRCTL_GET_FDB_ENTRIES: 365 return get_fdb_entries(br, (void __user *)args[1], 366 args[2], args[3]); 367 } 368 369 return -EOPNOTSUPP; 370} 371 372static int old_deviceless(struct net *net, void __user *uarg) 373{ 374 unsigned long args[3]; 375 376 if (copy_from_user(args, uarg, sizeof(args))) 377 return -EFAULT; 378 379 switch (args[0]) { 380 case BRCTL_GET_VERSION: 381 return BRCTL_VERSION; 382 383 case BRCTL_GET_BRIDGES: 384 { 385 int *indices; 386 int ret = 0; 387 388 if (args[2] >= 2048) 389 return -ENOMEM; 390 indices = kcalloc(args[2], sizeof(int), GFP_KERNEL); 391 if (indices == NULL) 392 return -ENOMEM; 393 394 args[2] = get_bridge_ifindices(net, indices, args[2]); 395 396 ret = copy_to_user((void __user *)args[1], indices, args[2]*sizeof(int)) 397 ? -EFAULT : args[2]; 398 399 kfree(indices); 400 return ret; 401 } 402 403 case BRCTL_ADD_BRIDGE: 404 case BRCTL_DEL_BRIDGE: 405 { 406 char buf[IFNAMSIZ]; 407 408 if (!capable(CAP_NET_ADMIN)) 409 return -EPERM; 410 411 if (copy_from_user(buf, (void __user *)args[1], IFNAMSIZ)) 412 return -EFAULT; 413 414 buf[IFNAMSIZ-1] = 0; 415 416 if (args[0] == BRCTL_ADD_BRIDGE) 417 return br_add_bridge(net, buf); 418 419 return br_del_bridge(net, buf); 420 } 421 /* Foxconn add start, Zz Shan@MutiSsidControl 03/13/2009*/ 422#ifdef MULTIPLE_SSID 423 case BRCTL_SET_MSSIDPROFILE: 424 { 425 unsigned long num = 0; 426 427 gProfilenum = 0; 428 if (gProfile) 429 { 430 kfree(gProfile); 431 gProfile = NULL; 432 } 433 434 if (copy_from_user(&num, (void __user *)args[1], sizeof(int))) 435 return -EFAULT; 436 437 if (num == 0) 438 return 0; 439 440 gProfilenum = num; 441 gProfile = (T_MSsidCtlProfile *)kmalloc(num*sizeof(T_MSsidCtlProfile),GFP_ATOMIC); 442 if (!gProfile) 443 { 444 gProfilenum = 0; 445 return -EFAULT; 446 } 447 if (copy_from_user(gProfile, (void __user *)args[2], num*sizeof(T_MSsidCtlProfile))) 448 { 449 gProfilenum = 0; 450 kfree(gProfile); 451 gProfile = NULL; 452 return -EFAULT; 453 } 454 455 //profileprint(); 456 457 return 0; 458 } 459 /* Foxconn added start pling 10/06/2010 */ 460 /* For 5G guest network control */ 461 case BRCTL_SET_5G_MSSIDPROFILE: 462 { 463 unsigned long num = 0; 464 465 gProfilenum_5g = 0; 466 if (gProfile_5g) 467 { 468 kfree(gProfile_5g); 469 gProfile_5g = NULL; 470 } 471 472 if (copy_from_user(&num, (void __user *)args[1], sizeof(int))) 473 return -EFAULT; 474 475 if (num == 0) 476 return 0; 477 478 gProfilenum_5g = num; 479 gProfile_5g = (T_MSsidCtlProfile *)kmalloc(num*sizeof(T_MSsidCtlProfile),GFP_ATOMIC); 480 if (!gProfile_5g) 481 { 482 gProfilenum_5g = 0; 483 return -EFAULT; 484 } 485 if (copy_from_user(gProfile_5g, (void __user *)args[2], num*sizeof(T_MSsidCtlProfile))) 486 { 487 gProfilenum_5g = 0; 488 kfree(gProfile_5g); 489 gProfile_5g = NULL; 490 return -EFAULT; 491 } 492 493 //profileprint(); 494 495 return 0; 496 } 497 /* Foxconn added end pling 10/06/2010 */ 498#endif 499 /* Foxconn add end, Zz Shan 03/13/2009*/ 500 /* foxconn added start, zacker, 03/24/2011 */ 501 case BRCTL_SET_BCMCTF_ENABLE: 502 { 503#ifdef HNDCTF 504 struct net_device *dev; 505 int ret = 0; 506 int ctf_is_enabled = 0; 507 508 /*Foxconn modify start by Hank 08/10/2012 */ 509 /*kernel function be modified*/ 510 dev = dev_get_by_index(net,args[1]); 511 /*Foxconn modify end by Hank 08/10/2012 */ 512 if (dev == NULL) 513 return -EINVAL; 514 515 ctf_is_enabled = ctf_isenabled(kcih, dev); 516 if ((args[2] && !ctf_is_enabled) 517 || (!args[2] && ctf_is_enabled)) 518 { 519 printk("<0>SET_BCMCTF:ifname:%s,enable:%lu\n", 520 dev->name, args[2]); 521 ret = ctf_enable(kcih, dev, args[2],NULL); 522 } 523 524 dev_put(dev); 525 return ret; 526#else 527 break; 528#endif /* HNDCTF */ 529 } 530 /* foxconn added end, zacker, 03/24/2011 */ 531 /*Fxcn added start dennis,02/18/2012,for access control*/ 532#ifdef INCLUDE_ACCESSCONTROL 533 case BRCTL_SET_ACCESS_CONTROL: 534 { 535 536 unsigned long num = 0; 537 gAccessTablenum = 0; 538 539 if (gAccessTable) 540 { 541 kfree(gAccessTable); 542 gAccessTable = NULL; 543 } 544 545 if (copy_from_user(&num, (void __user *)args[1], sizeof(int))) 546 return -EFAULT; 547 548 if (num == 0) 549 return 0; 550 551 gAccessTablenum = num; 552 gAccessTable = (T_AccessControlTable *)kmalloc(num*sizeof(T_AccessControlTable),GFP_ATOMIC); 553 if (!gAccessTable) 554 { 555 gAccessTablenum = 0; 556 return -EFAULT; 557 } 558 if (copy_from_user(gAccessTable, (void __user *)args[2], num*sizeof(T_AccessControlTable))) 559 { 560 gAccessTablenum = 0; 561 kfree(gAccessTable); 562 gAccessTable = NULL; 563 return -EFAULT; 564 } 565 566 return 0; 567 568 } 569 570 case BRCTL_SET_ACCESS_CONTROL_MODE: 571 { 572 unsigned long mode = 0; 573 gAccessControlMode = 0; 574 575 576 if (copy_from_user(&mode, (void __user *)args[1], sizeof(int))) 577 return -EFAULT; 578 printk("BRCTL_SET_ACCESS_CONTROL_MODE>> mode %d\n",mode); 579 gAccessControlMode = mode; 580 printk("BRCTL_SET_ACCESS_CONTROL_MODE>> gAccessControlMode %d\n",gAccessControlMode); 581 582 return 0; 583 584 } 585#endif 586 587 /*Fxcn added end dennis,02/18/2012,for access control*/ 588 } 589 590 return -EOPNOTSUPP; 591} 592 593int br_ioctl_deviceless_stub(struct net *net, unsigned int cmd, void __user *uarg) 594{ 595 switch (cmd) { 596 case SIOCGIFBR: 597 case SIOCSIFBR: 598 return old_deviceless(net, uarg); 599 600 case SIOCBRADDBR: 601 case SIOCBRDELBR: 602 { 603 char buf[IFNAMSIZ]; 604 605 if (!capable(CAP_NET_ADMIN)) 606 return -EPERM; 607 608 if (copy_from_user(buf, uarg, IFNAMSIZ)) 609 return -EFAULT; 610 611 buf[IFNAMSIZ-1] = 0; 612 if (cmd == SIOCBRADDBR) 613 return br_add_bridge(net, buf); 614 615 return br_del_bridge(net, buf); 616 } 617 } 618 return -EOPNOTSUPP; 619} 620 621int br_dev_ioctl(struct net_device *dev, struct ifreq *rq, int cmd) 622{ 623 struct net_bridge *br = netdev_priv(dev); 624 625 switch(cmd) { 626 case SIOCDEVPRIVATE: 627 return old_dev_ioctl(dev, rq, cmd); 628 629 case SIOCBRADDIF: 630 case SIOCBRDELIF: 631 return add_del_if(br, rq->ifr_ifindex, cmd == SIOCBRADDIF); 632 633 } 634 635 br_debug(br, "Bridge does not support ioctl 0x%x\n", cmd); 636 return -EOPNOTSUPP; 637} 638