2 * net/core/ethtool.c - Ethtool ioctl handler
3 * Copyright (c) 2003 Matthew Wilcox <matthew@wil.cx>
5 * This file is where we call all the ethtool_ops commands to get
6 * the information ethtool needs. We fall back to calling do_ioctl()
7 * for drivers which haven't been converted to ethtool_ops yet.
12 #include <linux/module.h>
13 #include <linux/types.h>
14 #include <linux/errno.h>
15 #include <linux/ethtool.h>
16 #include <linux/netdevice.h>
17 #include <asm/uaccess.h>
20 * Some useful ethtool_ops methods that're device independent.
21 * If we find that all drivers want to do the same thing here,
22 * we can turn these into dev_() function calls.
25 u32 ethtool_op_get_link(struct net_device *dev)
27 return netif_carrier_ok(dev) ? 1 : 0;
30 u32 ethtool_op_get_tx_csum(struct net_device *dev)
32 return (dev->features & (NETIF_F_IP_CSUM | NETIF_F_HW_CSUM)) != 0;
35 int ethtool_op_set_tx_csum(struct net_device *dev, u32 data)
38 dev->features |= NETIF_F_IP_CSUM;
40 dev->features &= ~NETIF_F_IP_CSUM;
45 int ethtool_op_set_tx_hw_csum(struct net_device *dev, u32 data)
48 dev->features |= NETIF_F_HW_CSUM;
50 dev->features &= ~NETIF_F_HW_CSUM;
54 u32 ethtool_op_get_sg(struct net_device *dev)
56 return (dev->features & NETIF_F_SG) != 0;
59 int ethtool_op_set_sg(struct net_device *dev, u32 data)
62 dev->features |= NETIF_F_SG;
64 dev->features &= ~NETIF_F_SG;
69 u32 ethtool_op_get_tso(struct net_device *dev)
71 return (dev->features & NETIF_F_TSO) != 0;
74 int ethtool_op_set_tso(struct net_device *dev, u32 data)
77 dev->features |= NETIF_F_TSO;
79 dev->features &= ~NETIF_F_TSO;
84 int ethtool_op_get_perm_addr(struct net_device *dev, struct ethtool_perm_addr *addr, u8 *data)
86 unsigned char len = dev->addr_len;
87 if ( addr->size < len )
91 memcpy(data, dev->perm_addr, len);
96 /* Handlers for each ethtool command */
98 static int ethtool_get_settings(struct net_device *dev, void __user *useraddr)
100 struct ethtool_cmd cmd = { ETHTOOL_GSET };
103 if (!dev->ethtool_ops->get_settings)
106 err = dev->ethtool_ops->get_settings(dev, &cmd);
110 if (copy_to_user(useraddr, &cmd, sizeof(cmd)))
115 static int ethtool_set_settings(struct net_device *dev, void __user *useraddr)
117 struct ethtool_cmd cmd;
119 if (!dev->ethtool_ops->set_settings)
122 if (copy_from_user(&cmd, useraddr, sizeof(cmd)))
125 return dev->ethtool_ops->set_settings(dev, &cmd);
128 static int ethtool_get_drvinfo(struct net_device *dev, void __user *useraddr)
130 struct ethtool_drvinfo info;
131 struct ethtool_ops *ops = dev->ethtool_ops;
133 if (!ops->get_drvinfo)
136 memset(&info, 0, sizeof(info));
137 info.cmd = ETHTOOL_GDRVINFO;
138 ops->get_drvinfo(dev, &info);
140 if (ops->self_test_count)
141 info.testinfo_len = ops->self_test_count(dev);
142 if (ops->get_stats_count)
143 info.n_stats = ops->get_stats_count(dev);
144 if (ops->get_regs_len)
145 info.regdump_len = ops->get_regs_len(dev);
146 if (ops->get_eeprom_len)
147 info.eedump_len = ops->get_eeprom_len(dev);
149 if (copy_to_user(useraddr, &info, sizeof(info)))
154 static int ethtool_get_regs(struct net_device *dev, char __user *useraddr)
156 struct ethtool_regs regs;
157 struct ethtool_ops *ops = dev->ethtool_ops;
161 if (!ops->get_regs || !ops->get_regs_len)
164 if (copy_from_user(®s, useraddr, sizeof(regs)))
167 reglen = ops->get_regs_len(dev);
168 if (regs.len > reglen)
171 regbuf = kmalloc(reglen, GFP_USER);
175 ops->get_regs(dev, ®s, regbuf);
178 if (copy_to_user(useraddr, ®s, sizeof(regs)))
180 useraddr += offsetof(struct ethtool_regs, data);
181 if (copy_to_user(useraddr, regbuf, regs.len))
190 static int ethtool_get_wol(struct net_device *dev, char __user *useraddr)
192 struct ethtool_wolinfo wol = { ETHTOOL_GWOL };
194 if (!dev->ethtool_ops->get_wol)
197 dev->ethtool_ops->get_wol(dev, &wol);
199 if (copy_to_user(useraddr, &wol, sizeof(wol)))
204 static int ethtool_set_wol(struct net_device *dev, char __user *useraddr)
206 struct ethtool_wolinfo wol;
208 if (!dev->ethtool_ops->set_wol)
211 if (copy_from_user(&wol, useraddr, sizeof(wol)))
214 return dev->ethtool_ops->set_wol(dev, &wol);
217 static int ethtool_get_msglevel(struct net_device *dev, char __user *useraddr)
219 struct ethtool_value edata = { ETHTOOL_GMSGLVL };
221 if (!dev->ethtool_ops->get_msglevel)
224 edata.data = dev->ethtool_ops->get_msglevel(dev);
226 if (copy_to_user(useraddr, &edata, sizeof(edata)))
231 static int ethtool_set_msglevel(struct net_device *dev, char __user *useraddr)
233 struct ethtool_value edata;
235 if (!dev->ethtool_ops->set_msglevel)
238 if (copy_from_user(&edata, useraddr, sizeof(edata)))
241 dev->ethtool_ops->set_msglevel(dev, edata.data);
245 static int ethtool_nway_reset(struct net_device *dev)
247 if (!dev->ethtool_ops->nway_reset)
250 return dev->ethtool_ops->nway_reset(dev);
253 static int ethtool_get_link(struct net_device *dev, void __user *useraddr)
255 struct ethtool_value edata = { ETHTOOL_GLINK };
257 if (!dev->ethtool_ops->get_link)
260 edata.data = dev->ethtool_ops->get_link(dev);
262 if (copy_to_user(useraddr, &edata, sizeof(edata)))
267 static int ethtool_get_eeprom(struct net_device *dev, void __user *useraddr)
269 struct ethtool_eeprom eeprom;
270 struct ethtool_ops *ops = dev->ethtool_ops;
274 if (!ops->get_eeprom || !ops->get_eeprom_len)
277 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
280 /* Check for wrap and zero */
281 if (eeprom.offset + eeprom.len <= eeprom.offset)
284 /* Check for exceeding total eeprom len */
285 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
288 data = kmalloc(eeprom.len, GFP_USER);
293 if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len))
296 ret = ops->get_eeprom(dev, &eeprom, data);
301 if (copy_to_user(useraddr, &eeprom, sizeof(eeprom)))
303 if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len))
312 static int ethtool_set_eeprom(struct net_device *dev, void __user *useraddr)
314 struct ethtool_eeprom eeprom;
315 struct ethtool_ops *ops = dev->ethtool_ops;
319 if (!ops->set_eeprom || !ops->get_eeprom_len)
322 if (copy_from_user(&eeprom, useraddr, sizeof(eeprom)))
325 /* Check for wrap and zero */
326 if (eeprom.offset + eeprom.len <= eeprom.offset)
329 /* Check for exceeding total eeprom len */
330 if (eeprom.offset + eeprom.len > ops->get_eeprom_len(dev))
333 data = kmalloc(eeprom.len, GFP_USER);
338 if (copy_from_user(data, useraddr + sizeof(eeprom), eeprom.len))
341 ret = ops->set_eeprom(dev, &eeprom, data);
345 if (copy_to_user(useraddr + sizeof(eeprom), data, eeprom.len))
353 static int ethtool_get_coalesce(struct net_device *dev, void __user *useraddr)
355 struct ethtool_coalesce coalesce = { ETHTOOL_GCOALESCE };
357 if (!dev->ethtool_ops->get_coalesce)
360 dev->ethtool_ops->get_coalesce(dev, &coalesce);
362 if (copy_to_user(useraddr, &coalesce, sizeof(coalesce)))
367 static int ethtool_set_coalesce(struct net_device *dev, void __user *useraddr)
369 struct ethtool_coalesce coalesce;
371 if (!dev->ethtool_ops->set_coalesce)
374 if (copy_from_user(&coalesce, useraddr, sizeof(coalesce)))
377 return dev->ethtool_ops->set_coalesce(dev, &coalesce);
380 static int ethtool_get_ringparam(struct net_device *dev, void __user *useraddr)
382 struct ethtool_ringparam ringparam = { ETHTOOL_GRINGPARAM };
384 if (!dev->ethtool_ops->get_ringparam)
387 dev->ethtool_ops->get_ringparam(dev, &ringparam);
389 if (copy_to_user(useraddr, &ringparam, sizeof(ringparam)))
394 static int ethtool_set_ringparam(struct net_device *dev, void __user *useraddr)
396 struct ethtool_ringparam ringparam;
398 if (!dev->ethtool_ops->set_ringparam)
401 if (copy_from_user(&ringparam, useraddr, sizeof(ringparam)))
404 return dev->ethtool_ops->set_ringparam(dev, &ringparam);
407 static int ethtool_get_pauseparam(struct net_device *dev, void __user *useraddr)
409 struct ethtool_pauseparam pauseparam = { ETHTOOL_GPAUSEPARAM };
411 if (!dev->ethtool_ops->get_pauseparam)
414 dev->ethtool_ops->get_pauseparam(dev, &pauseparam);
416 if (copy_to_user(useraddr, &pauseparam, sizeof(pauseparam)))
421 static int ethtool_set_pauseparam(struct net_device *dev, void __user *useraddr)
423 struct ethtool_pauseparam pauseparam;
425 if (!dev->ethtool_ops->get_pauseparam)
428 if (copy_from_user(&pauseparam, useraddr, sizeof(pauseparam)))
431 return dev->ethtool_ops->set_pauseparam(dev, &pauseparam);
434 static int ethtool_get_rx_csum(struct net_device *dev, char __user *useraddr)
436 struct ethtool_value edata = { ETHTOOL_GRXCSUM };
438 if (!dev->ethtool_ops->get_rx_csum)
441 edata.data = dev->ethtool_ops->get_rx_csum(dev);
443 if (copy_to_user(useraddr, &edata, sizeof(edata)))
448 static int ethtool_set_rx_csum(struct net_device *dev, char __user *useraddr)
450 struct ethtool_value edata;
452 if (!dev->ethtool_ops->set_rx_csum)
455 if (copy_from_user(&edata, useraddr, sizeof(edata)))
458 dev->ethtool_ops->set_rx_csum(dev, edata.data);
462 static int ethtool_get_tx_csum(struct net_device *dev, char __user *useraddr)
464 struct ethtool_value edata = { ETHTOOL_GTXCSUM };
466 if (!dev->ethtool_ops->get_tx_csum)
469 edata.data = dev->ethtool_ops->get_tx_csum(dev);
471 if (copy_to_user(useraddr, &edata, sizeof(edata)))
476 static int __ethtool_set_sg(struct net_device *dev, u32 data)
480 if (!data && dev->ethtool_ops->set_tso) {
481 err = dev->ethtool_ops->set_tso(dev, 0);
486 return dev->ethtool_ops->set_sg(dev, data);
489 static int ethtool_set_tx_csum(struct net_device *dev, char __user *useraddr)
491 struct ethtool_value edata;
494 if (!dev->ethtool_ops->set_tx_csum)
497 if (copy_from_user(&edata, useraddr, sizeof(edata)))
500 if (!edata.data && dev->ethtool_ops->set_sg) {
501 err = __ethtool_set_sg(dev, 0);
506 return dev->ethtool_ops->set_tx_csum(dev, edata.data);
509 static int ethtool_get_sg(struct net_device *dev, char __user *useraddr)
511 struct ethtool_value edata = { ETHTOOL_GSG };
513 if (!dev->ethtool_ops->get_sg)
516 edata.data = dev->ethtool_ops->get_sg(dev);
518 if (copy_to_user(useraddr, &edata, sizeof(edata)))
523 static int ethtool_set_sg(struct net_device *dev, char __user *useraddr)
525 struct ethtool_value edata;
527 if (!dev->ethtool_ops->set_sg)
530 if (copy_from_user(&edata, useraddr, sizeof(edata)))
534 !(dev->features & (NETIF_F_IP_CSUM |
539 return __ethtool_set_sg(dev, edata.data);
542 static int ethtool_get_tso(struct net_device *dev, char __user *useraddr)
544 struct ethtool_value edata = { ETHTOOL_GTSO };
546 if (!dev->ethtool_ops->get_tso)
549 edata.data = dev->ethtool_ops->get_tso(dev);
551 if (copy_to_user(useraddr, &edata, sizeof(edata)))
556 static int ethtool_set_tso(struct net_device *dev, char __user *useraddr)
558 struct ethtool_value edata;
560 if (!dev->ethtool_ops->set_tso)
563 if (copy_from_user(&edata, useraddr, sizeof(edata)))
566 if (edata.data && !(dev->features & NETIF_F_SG))
569 return dev->ethtool_ops->set_tso(dev, edata.data);
572 static int ethtool_self_test(struct net_device *dev, char __user *useraddr)
574 struct ethtool_test test;
575 struct ethtool_ops *ops = dev->ethtool_ops;
579 if (!ops->self_test || !ops->self_test_count)
582 if (copy_from_user(&test, useraddr, sizeof(test)))
585 test.len = ops->self_test_count(dev);
586 data = kmalloc(test.len * sizeof(u64), GFP_USER);
590 ops->self_test(dev, &test, data);
593 if (copy_to_user(useraddr, &test, sizeof(test)))
595 useraddr += sizeof(test);
596 if (copy_to_user(useraddr, data, test.len * sizeof(u64)))
605 static int ethtool_get_strings(struct net_device *dev, void __user *useraddr)
607 struct ethtool_gstrings gstrings;
608 struct ethtool_ops *ops = dev->ethtool_ops;
612 if (!ops->get_strings)
615 if (copy_from_user(&gstrings, useraddr, sizeof(gstrings)))
618 switch (gstrings.string_set) {
620 if (!ops->self_test_count)
622 gstrings.len = ops->self_test_count(dev);
625 if (!ops->get_stats_count)
627 gstrings.len = ops->get_stats_count(dev);
633 data = kmalloc(gstrings.len * ETH_GSTRING_LEN, GFP_USER);
637 ops->get_strings(dev, gstrings.string_set, data);
640 if (copy_to_user(useraddr, &gstrings, sizeof(gstrings)))
642 useraddr += sizeof(gstrings);
643 if (copy_to_user(useraddr, data, gstrings.len * ETH_GSTRING_LEN))
652 static int ethtool_phys_id(struct net_device *dev, void __user *useraddr)
654 struct ethtool_value id;
656 if (!dev->ethtool_ops->phys_id)
659 if (copy_from_user(&id, useraddr, sizeof(id)))
662 return dev->ethtool_ops->phys_id(dev, id.data);
665 static int ethtool_get_stats(struct net_device *dev, void __user *useraddr)
667 struct ethtool_stats stats;
668 struct ethtool_ops *ops = dev->ethtool_ops;
672 if (!ops->get_ethtool_stats || !ops->get_stats_count)
675 if (copy_from_user(&stats, useraddr, sizeof(stats)))
678 stats.n_stats = ops->get_stats_count(dev);
679 data = kmalloc(stats.n_stats * sizeof(u64), GFP_USER);
683 ops->get_ethtool_stats(dev, &stats, data);
686 if (copy_to_user(useraddr, &stats, sizeof(stats)))
688 useraddr += sizeof(stats);
689 if (copy_to_user(useraddr, data, stats.n_stats * sizeof(u64)))
698 static int ethtool_get_perm_addr(struct net_device *dev, void *useraddr)
700 struct ethtool_perm_addr epaddr;
704 if (!dev->ethtool_ops->get_perm_addr)
707 if (copy_from_user(&epaddr,useraddr,sizeof(epaddr)))
710 data = kmalloc(epaddr.size, GFP_USER);
714 ret = dev->ethtool_ops->get_perm_addr(dev,&epaddr,data);
719 if (copy_to_user(useraddr, &epaddr, sizeof(epaddr)))
721 useraddr += sizeof(epaddr);
722 if (copy_to_user(useraddr, data, epaddr.size))
731 /* The main entry point in this file. Called from net/core/dev.c */
733 int dev_ethtool(struct ifreq *ifr)
735 struct net_device *dev = __dev_get_by_name(ifr->ifr_name);
736 void __user *useraddr = ifr->ifr_data;
739 unsigned long old_features;
742 * XXX: This can be pushed down into the ethtool_* handlers that
743 * need it. Keep existing behaviour for the moment.
745 if (!capable(CAP_NET_ADMIN))
748 if (!dev || !netif_device_present(dev))
751 if (!dev->ethtool_ops)
754 if (copy_from_user(ðcmd, useraddr, sizeof (ethcmd)))
757 if(dev->ethtool_ops->begin)
758 if ((rc = dev->ethtool_ops->begin(dev)) < 0)
761 old_features = dev->features;
765 rc = ethtool_get_settings(dev, useraddr);
768 rc = ethtool_set_settings(dev, useraddr);
770 case ETHTOOL_GDRVINFO:
771 rc = ethtool_get_drvinfo(dev, useraddr);
774 rc = ethtool_get_regs(dev, useraddr);
777 rc = ethtool_get_wol(dev, useraddr);
780 rc = ethtool_set_wol(dev, useraddr);
782 case ETHTOOL_GMSGLVL:
783 rc = ethtool_get_msglevel(dev, useraddr);
785 case ETHTOOL_SMSGLVL:
786 rc = ethtool_set_msglevel(dev, useraddr);
788 case ETHTOOL_NWAY_RST:
789 rc = ethtool_nway_reset(dev);
792 rc = ethtool_get_link(dev, useraddr);
794 case ETHTOOL_GEEPROM:
795 rc = ethtool_get_eeprom(dev, useraddr);
797 case ETHTOOL_SEEPROM:
798 rc = ethtool_set_eeprom(dev, useraddr);
800 case ETHTOOL_GCOALESCE:
801 rc = ethtool_get_coalesce(dev, useraddr);
803 case ETHTOOL_SCOALESCE:
804 rc = ethtool_set_coalesce(dev, useraddr);
806 case ETHTOOL_GRINGPARAM:
807 rc = ethtool_get_ringparam(dev, useraddr);
809 case ETHTOOL_SRINGPARAM:
810 rc = ethtool_set_ringparam(dev, useraddr);
812 case ETHTOOL_GPAUSEPARAM:
813 rc = ethtool_get_pauseparam(dev, useraddr);
815 case ETHTOOL_SPAUSEPARAM:
816 rc = ethtool_set_pauseparam(dev, useraddr);
818 case ETHTOOL_GRXCSUM:
819 rc = ethtool_get_rx_csum(dev, useraddr);
821 case ETHTOOL_SRXCSUM:
822 rc = ethtool_set_rx_csum(dev, useraddr);
824 case ETHTOOL_GTXCSUM:
825 rc = ethtool_get_tx_csum(dev, useraddr);
827 case ETHTOOL_STXCSUM:
828 rc = ethtool_set_tx_csum(dev, useraddr);
831 rc = ethtool_get_sg(dev, useraddr);
834 rc = ethtool_set_sg(dev, useraddr);
837 rc = ethtool_get_tso(dev, useraddr);
840 rc = ethtool_set_tso(dev, useraddr);
843 rc = ethtool_self_test(dev, useraddr);
845 case ETHTOOL_GSTRINGS:
846 rc = ethtool_get_strings(dev, useraddr);
848 case ETHTOOL_PHYS_ID:
849 rc = ethtool_phys_id(dev, useraddr);
852 rc = ethtool_get_stats(dev, useraddr);
854 case ETHTOOL_GPERMADDR:
855 rc = ethtool_get_perm_addr(dev, useraddr);
861 if(dev->ethtool_ops->complete)
862 dev->ethtool_ops->complete(dev);
864 if (old_features != dev->features)
865 netdev_features_change(dev);
871 return dev->do_ioctl(dev, ifr, SIOCETHTOOL);
875 EXPORT_SYMBOL(dev_ethtool);
876 EXPORT_SYMBOL(ethtool_op_get_link);
877 EXPORT_SYMBOL_GPL(ethtool_op_get_perm_addr);
878 EXPORT_SYMBOL(ethtool_op_get_sg);
879 EXPORT_SYMBOL(ethtool_op_get_tso);
880 EXPORT_SYMBOL(ethtool_op_get_tx_csum);
881 EXPORT_SYMBOL(ethtool_op_set_sg);
882 EXPORT_SYMBOL(ethtool_op_set_tso);
883 EXPORT_SYMBOL(ethtool_op_set_tx_csum);
884 EXPORT_SYMBOL(ethtool_op_set_tx_hw_csum);