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-rw-r--r--include/linux/netdevice.h232
1 files changed, 168 insertions, 64 deletions
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 12d7f4469dc9..9060f5f3517a 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -451,6 +451,131 @@ struct netdev_queue {
451 struct Qdisc *qdisc_sleeping; 451 struct Qdisc *qdisc_sleeping;
452} ____cacheline_aligned_in_smp; 452} ____cacheline_aligned_in_smp;
453 453
454
455/*
456 * This structure defines the management hooks for network devices.
457 * The following hooks can bed defined and are optonal (can be null)
458 * unless otherwise noted.
459 *
460 * int (*ndo_init)(struct net_device *dev);
461 * This function is called once when network device is registered.
462 * The network device can use this to any late stage initializaton
463 * or semantic validattion. It can fail with an error code which will
464 * be propogated back to register_netdev
465 *
466 * void (*ndo_uninit)(struct net_device *dev);
467 * This function is called when device is unregistered or when registration
468 * fails. It is not called if init fails.
469 *
470 * int (*ndo_open)(struct net_device *dev);
471 * This function is called when network device transistions to the up
472 * state.
473 *
474 * int (*ndo_stop)(struct net_device *dev);
475 * This function is called when network device transistions to the down
476 * state.
477 *
478 * void (*ndo_change_rx_flags)(struct net_device *dev, int flags);
479 * This function is called to allow device receiver to make
480 * changes to configuration when multicast or promiscious is enabled.
481 *
482 * void (*ndo_set_rx_mode)(struct net_device *dev);
483 * This function is called device changes address list filtering.
484 *
485 * void (*ndo_set_multicast_list)(struct net_device *dev);
486 * This function is called when the multicast address list changes.
487 *
488 * int (*ndo_set_mac_address)(struct net_device *dev, void *addr);
489 * This function is called when the Media Access Control address
490 * needs to be changed. If not this interface is not defined, the
491 * mac address can not be changed.
492 *
493 * int (*ndo_validate_addr)(struct net_device *dev);
494 * Test if Media Access Control address is valid for the device.
495 *
496 * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
497 * Called when a user request an ioctl which can't be handled by
498 * the generic interface code. If not defined ioctl's return
499 * not supported error code.
500 *
501 * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map);
502 * Used to set network devices bus interface parameters. This interface
503 * is retained for legacy reason, new devices should use the bus
504 * interface (PCI) for low level management.
505 *
506 * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu);
507 * Called when a user wants to change the Maximum Transfer Unit
508 * of a device. If not defined, any request to change MTU will
509 * will return an error.
510 *
511 * void (*ndo_tx_timeout) (struct net_device *dev);
512 * Callback uses when the transmitter has not made any progress
513 * for dev->watchdog ticks.
514 *
515 * struct net_device_stats* (*get_stats)(struct net_device *dev);
516 * Called when a user wants to get the network device usage
517 * statistics. If not defined, the counters in dev->stats will
518 * be used.
519 *
520 * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp);
521 * If device support VLAN receive accleration
522 * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called
523 * when vlan groups for the device changes. Note: grp is NULL
524 * if no vlan's groups are being used.
525 *
526 * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid);
527 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
528 * this function is called when a VLAN id is registered.
529 *
530 * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid);
531 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
532 * this function is called when a VLAN id is unregistered.
533 *
534 * void (*ndo_poll_controller)(struct net_device *dev);
535 */
536struct net_device_ops {
537 int (*ndo_init)(struct net_device *dev);
538 void (*ndo_uninit)(struct net_device *dev);
539 int (*ndo_open)(struct net_device *dev);
540 int (*ndo_stop)(struct net_device *dev);
541#define HAVE_CHANGE_RX_FLAGS
542 void (*ndo_change_rx_flags)(struct net_device *dev,
543 int flags);
544#define HAVE_SET_RX_MODE
545 void (*ndo_set_rx_mode)(struct net_device *dev);
546#define HAVE_MULTICAST
547 void (*ndo_set_multicast_list)(struct net_device *dev);
548#define HAVE_SET_MAC_ADDR
549 int (*ndo_set_mac_address)(struct net_device *dev,
550 void *addr);
551#define HAVE_VALIDATE_ADDR
552 int (*ndo_validate_addr)(struct net_device *dev);
553#define HAVE_PRIVATE_IOCTL
554 int (*ndo_do_ioctl)(struct net_device *dev,
555 struct ifreq *ifr, int cmd);
556#define HAVE_SET_CONFIG
557 int (*ndo_set_config)(struct net_device *dev,
558 struct ifmap *map);
559#define HAVE_CHANGE_MTU
560 int (*ndo_change_mtu)(struct net_device *dev, int new_mtu);
561
562#define HAVE_TX_TIMEOUT
563 void (*ndo_tx_timeout) (struct net_device *dev);
564
565 struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
566
567 void (*ndo_vlan_rx_register)(struct net_device *dev,
568 struct vlan_group *grp);
569 void (*ndo_vlan_rx_add_vid)(struct net_device *dev,
570 unsigned short vid);
571 void (*ndo_vlan_rx_kill_vid)(struct net_device *dev,
572 unsigned short vid);
573#ifdef CONFIG_NET_POLL_CONTROLLER
574#define HAVE_NETDEV_POLL
575 void (*ndo_poll_controller)(struct net_device *dev);
576#endif
577};
578
454/* 579/*
455 * The DEVICE structure. 580 * The DEVICE structure.
456 * Actually, this whole structure is a big mistake. It mixes I/O 581 * Actually, this whole structure is a big mistake. It mixes I/O
@@ -498,11 +623,6 @@ struct net_device
498#ifdef CONFIG_NETPOLL 623#ifdef CONFIG_NETPOLL
499 struct list_head napi_list; 624 struct list_head napi_list;
500#endif 625#endif
501
502 /* The device initialization function. Called only once. */
503 int (*init)(struct net_device *dev);
504
505 /* ------- Fields preinitialized in Space.c finish here ------- */
506 626
507 /* Net device features */ 627 /* Net device features */
508 unsigned long features; 628 unsigned long features;
@@ -546,15 +666,13 @@ struct net_device
546 * for all in netdev_increment_features. 666 * for all in netdev_increment_features.
547 */ 667 */
548#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \ 668#define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
549 NETIF_F_SG | NETIF_F_HIGHDMA | \ 669 NETIF_F_SG | NETIF_F_HIGHDMA | \
550 NETIF_F_FRAGLIST) 670 NETIF_F_FRAGLIST)
551 671
552 /* Interface index. Unique device identifier */ 672 /* Interface index. Unique device identifier */
553 int ifindex; 673 int ifindex;
554 int iflink; 674 int iflink;
555 675
556
557 struct net_device_stats* (*get_stats)(struct net_device *dev);
558 struct net_device_stats stats; 676 struct net_device_stats stats;
559 677
560#ifdef CONFIG_WIRELESS_EXT 678#ifdef CONFIG_WIRELESS_EXT
@@ -564,18 +682,13 @@ struct net_device
564 /* Instance data managed by the core of Wireless Extensions. */ 682 /* Instance data managed by the core of Wireless Extensions. */
565 struct iw_public_data * wireless_data; 683 struct iw_public_data * wireless_data;
566#endif 684#endif
685 /* Management operations */
686 const struct net_device_ops *netdev_ops;
567 const struct ethtool_ops *ethtool_ops; 687 const struct ethtool_ops *ethtool_ops;
568 688
569 /* Hardware header description */ 689 /* Hardware header description */
570 const struct header_ops *header_ops; 690 const struct header_ops *header_ops;
571 691
572 /*
573 * This marks the end of the "visible" part of the structure. All
574 * fields hereafter are internal to the system, and may change at
575 * will (read: may be cleaned up at will).
576 */
577
578
579 unsigned int flags; /* interface flags (a la BSD) */ 692 unsigned int flags; /* interface flags (a la BSD) */
580 unsigned short gflags; 693 unsigned short gflags;
581 unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */ 694 unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */
@@ -634,7 +747,7 @@ struct net_device
634 unsigned long last_rx; /* Time of last Rx */ 747 unsigned long last_rx; /* Time of last Rx */
635 /* Interface address info used in eth_type_trans() */ 748 /* Interface address info used in eth_type_trans() */
636 unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast 749 unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast
637 because most packets are unicast) */ 750 because most packets are unicast) */
638 751
639 unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ 752 unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
640 753
@@ -648,6 +761,10 @@ struct net_device
648 /* Number of TX queues currently active in device */ 761 /* Number of TX queues currently active in device */
649 unsigned int real_num_tx_queues; 762 unsigned int real_num_tx_queues;
650 763
764 /* Map buffer to appropriate transmit queue */
765 u16 (*select_queue)(struct net_device *dev,
766 struct sk_buff *skb);
767
651 unsigned long tx_queue_len; /* Max frames per queue allowed */ 768 unsigned long tx_queue_len; /* Max frames per queue allowed */
652 spinlock_t tx_global_lock; 769 spinlock_t tx_global_lock;
653/* 770/*
@@ -662,9 +779,6 @@ struct net_device
662 int watchdog_timeo; /* used by dev_watchdog() */ 779 int watchdog_timeo; /* used by dev_watchdog() */
663 struct timer_list watchdog_timer; 780 struct timer_list watchdog_timer;
664 781
665/*
666 * refcnt is a very hot point, so align it on SMP
667 */
668 /* Number of references to this device */ 782 /* Number of references to this device */
669 atomic_t refcnt ____cacheline_aligned_in_smp; 783 atomic_t refcnt ____cacheline_aligned_in_smp;
670 784
@@ -683,56 +797,14 @@ struct net_device
683 NETREG_RELEASED, /* called free_netdev */ 797 NETREG_RELEASED, /* called free_netdev */
684 } reg_state; 798 } reg_state;
685 799
686 /* Called after device is detached from network. */ 800 /* Called from unregister, can be used to call free_netdev */
687 void (*uninit)(struct net_device *dev); 801 void (*destructor)(struct net_device *dev);
688 /* Called after last user reference disappears. */
689 void (*destructor)(struct net_device *dev);
690 802
691 /* Pointers to interface service routines. */ 803 int (*neigh_setup)(struct net_device *dev, struct neigh_parms *);
692 int (*open)(struct net_device *dev);
693 int (*stop)(struct net_device *dev);
694#define HAVE_NETDEV_POLL
695#define HAVE_CHANGE_RX_FLAGS
696 void (*change_rx_flags)(struct net_device *dev,
697 int flags);
698#define HAVE_SET_RX_MODE
699 void (*set_rx_mode)(struct net_device *dev);
700#define HAVE_MULTICAST
701 void (*set_multicast_list)(struct net_device *dev);
702#define HAVE_SET_MAC_ADDR
703 int (*set_mac_address)(struct net_device *dev,
704 void *addr);
705#define HAVE_VALIDATE_ADDR
706 int (*validate_addr)(struct net_device *dev);
707#define HAVE_PRIVATE_IOCTL
708 int (*do_ioctl)(struct net_device *dev,
709 struct ifreq *ifr, int cmd);
710#define HAVE_SET_CONFIG
711 int (*set_config)(struct net_device *dev,
712 struct ifmap *map);
713#define HAVE_CHANGE_MTU
714 int (*change_mtu)(struct net_device *dev, int new_mtu);
715 804
716#define HAVE_TX_TIMEOUT
717 void (*tx_timeout) (struct net_device *dev);
718
719 void (*vlan_rx_register)(struct net_device *dev,
720 struct vlan_group *grp);
721 void (*vlan_rx_add_vid)(struct net_device *dev,
722 unsigned short vid);
723 void (*vlan_rx_kill_vid)(struct net_device *dev,
724 unsigned short vid);
725
726 int (*neigh_setup)(struct net_device *dev, struct neigh_parms *);
727#ifdef CONFIG_NETPOLL 805#ifdef CONFIG_NETPOLL
728 struct netpoll_info *npinfo; 806 struct netpoll_info *npinfo;
729#endif 807#endif
730#ifdef CONFIG_NET_POLL_CONTROLLER
731 void (*poll_controller)(struct net_device *dev);
732#endif
733
734 u16 (*select_queue)(struct net_device *dev,
735 struct sk_buff *skb);
736 808
737#ifdef CONFIG_NET_NS 809#ifdef CONFIG_NET_NS
738 /* Network namespace this network device is inside */ 810 /* Network namespace this network device is inside */
@@ -763,6 +835,38 @@ struct net_device
763 /* for setting kernel sock attribute on TCP connection setup */ 835 /* for setting kernel sock attribute on TCP connection setup */
764#define GSO_MAX_SIZE 65536 836#define GSO_MAX_SIZE 65536
765 unsigned int gso_max_size; 837 unsigned int gso_max_size;
838
839#ifdef CONFIG_COMPAT_NET_DEV_OPS
840 struct {
841 int (*init)(struct net_device *dev);
842 void (*uninit)(struct net_device *dev);
843 int (*open)(struct net_device *dev);
844 int (*stop)(struct net_device *dev);
845 void (*change_rx_flags)(struct net_device *dev,
846 int flags);
847 void (*set_rx_mode)(struct net_device *dev);
848 void (*set_multicast_list)(struct net_device *dev);
849 int (*set_mac_address)(struct net_device *dev,
850 void *addr);
851 int (*validate_addr)(struct net_device *dev);
852 int (*do_ioctl)(struct net_device *dev,
853 struct ifreq *ifr, int cmd);
854 int (*set_config)(struct net_device *dev,
855 struct ifmap *map);
856 int (*change_mtu)(struct net_device *dev, int new_mtu);
857 void (*tx_timeout) (struct net_device *dev);
858 struct net_device_stats* (*get_stats)(struct net_device *dev);
859 void (*vlan_rx_register)(struct net_device *dev,
860 struct vlan_group *grp);
861 void (*vlan_rx_add_vid)(struct net_device *dev,
862 unsigned short vid);
863 void (*vlan_rx_kill_vid)(struct net_device *dev,
864 unsigned short vid);
865#ifdef CONFIG_NET_POLL_CONTROLLER
866 void (*poll_controller)(struct net_device *dev);
867#endif
868#endif
869 };
766}; 870};
767#define to_net_dev(d) container_of(d, struct net_device, dev) 871#define to_net_dev(d) container_of(d, struct net_device, dev)
768 872