2 * INET An implementation of the TCP/IP protocol suite for the LINUX
3 * operating system. INET is implemented using the BSD Socket
4 * interface as the means of communication with the user level.
6 * Definitions for the Interfaces handler.
8 * Version: @(#)dev.h 1.0.10 08/12/93
11 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
12 * Corey Minyard <wf-rch!minyard@relay.EU.net>
13 * Donald J. Becker, <becker@cesdis.gsfc.nasa.gov>
14 * Alan Cox, <Alan.Cox@linux.org>
15 * Bjorn Ekwall. <bj0rn@blox.se>
16 * Pekka Riikonen <priikone@poseidon.pspt.fi>
18 * This program is free software; you can redistribute it and/or
19 * modify it under the terms of the GNU General Public License
20 * as published by the Free Software Foundation; either version
21 * 2 of the License, or (at your option) any later version.
23 * Moved to /usr/include/linux for NET3
25 #ifndef _LINUX_NETDEVICE_H
26 #define _LINUX_NETDEVICE_H
29 #include <linux/if_ether.h>
30 #include <linux/if_packet.h>
33 #include <asm/atomic.h>
34 #include <asm/cache.h>
35 #include <asm/byteorder.h>
37 #include <linux/config.h>
38 #include <linux/device.h>
39 #include <linux/percpu.h>
45 /* source back-compat hooks */
46 #define SET_ETHTOOL_OPS(netdev,ops) \
47 ( (netdev)->ethtool_ops = (ops) )
49 #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev
50 functions are available. */
51 #define HAVE_FREE_NETDEV /* free_netdev() */
52 #define HAVE_NETDEV_PRIV /* netdev_priv() */
54 #define NET_XMIT_SUCCESS 0
55 #define NET_XMIT_DROP 1 /* skb dropped */
56 #define NET_XMIT_CN 2 /* congestion notification */
57 #define NET_XMIT_POLICED 3 /* skb is shot by police */
58 #define NET_XMIT_BYPASS 4 /* packet does not leave via dequeue;
59 (TC use only - dev_queue_xmit
60 returns this as NET_XMIT_SUCCESS) */
62 /* Backlog congestion levels */
63 #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
64 #define NET_RX_DROP 1 /* packet dropped */
65 #define NET_RX_CN_LOW 2 /* storm alert, just in case */
66 #define NET_RX_CN_MOD 3 /* Storm on its way! */
67 #define NET_RX_CN_HIGH 4 /* The storm is here */
68 #define NET_RX_BAD 5 /* packet dropped due to kernel error */
70 #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
74 #define MAX_ADDR_LEN 32 /* Largest hardware address length */
76 /* Driver transmit return codes */
77 #define NETDEV_TX_OK 0 /* driver took care of packet */
78 #define NETDEV_TX_BUSY 1 /* driver tx path was busy*/
79 #define NETDEV_TX_LOCKED -1 /* driver tx lock was already taken */
82 * Compute the worst case header length according to the protocols
86 #if !defined(CONFIG_AX25) && !defined(CONFIG_AX25_MODULE) && !defined(CONFIG_TR)
87 #define LL_MAX_HEADER 32
89 #if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
90 #define LL_MAX_HEADER 96
92 #define LL_MAX_HEADER 48
96 #if !defined(CONFIG_NET_IPIP) && \
97 !defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE)
98 #define MAX_HEADER LL_MAX_HEADER
100 #define MAX_HEADER (LL_MAX_HEADER + 48)
104 * Network device statistics. Akin to the 2.0 ether stats but
105 * with byte counters.
108 struct net_device_stats
110 unsigned long rx_packets
; /* total packets received */
111 unsigned long tx_packets
; /* total packets transmitted */
112 unsigned long rx_bytes
; /* total bytes received */
113 unsigned long tx_bytes
; /* total bytes transmitted */
114 unsigned long rx_errors
; /* bad packets received */
115 unsigned long tx_errors
; /* packet transmit problems */
116 unsigned long rx_dropped
; /* no space in linux buffers */
117 unsigned long tx_dropped
; /* no space available in linux */
118 unsigned long multicast
; /* multicast packets received */
119 unsigned long collisions
;
121 /* detailed rx_errors: */
122 unsigned long rx_length_errors
;
123 unsigned long rx_over_errors
; /* receiver ring buff overflow */
124 unsigned long rx_crc_errors
; /* recved pkt with crc error */
125 unsigned long rx_frame_errors
; /* recv'd frame alignment error */
126 unsigned long rx_fifo_errors
; /* recv'r fifo overrun */
127 unsigned long rx_missed_errors
; /* receiver missed packet */
129 /* detailed tx_errors */
130 unsigned long tx_aborted_errors
;
131 unsigned long tx_carrier_errors
;
132 unsigned long tx_fifo_errors
;
133 unsigned long tx_heartbeat_errors
;
134 unsigned long tx_window_errors
;
137 unsigned long rx_compressed
;
138 unsigned long tx_compressed
;
142 /* Media selection options. */
155 #include <linux/cache.h>
156 #include <linux/skbuff.h>
162 struct netif_rx_stats
166 unsigned time_squeeze
;
167 unsigned cpu_collision
;
170 DECLARE_PER_CPU(struct netif_rx_stats
, netdev_rx_stat
);
174 * We tag multicasts with these structures.
179 struct dev_mc_list
*next
;
180 __u8 dmi_addr
[MAX_ADDR_LEN
];
181 unsigned char dmi_addrlen
;
188 struct hh_cache
*hh_next
; /* Next entry */
189 atomic_t hh_refcnt
; /* number of users */
190 unsigned short hh_type
; /* protocol identifier, f.e ETH_P_IP
191 * NOTE: For VLANs, this will be the
192 * encapuslated type. --BLG
194 int hh_len
; /* length of header */
195 int (*hh_output
)(struct sk_buff
*skb
);
198 /* cached hardware header; allow for machine alignment needs. */
199 #define HH_DATA_MOD 16
200 #define HH_DATA_OFF(__len) \
201 (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
202 #define HH_DATA_ALIGN(__len) \
203 (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
204 unsigned long hh_data
[HH_DATA_ALIGN(LL_MAX_HEADER
) / sizeof(long)];
207 /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
209 * dev->hard_header_len ? (dev->hard_header_len +
210 * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
212 * We could use other alignment values, but we must maintain the
213 * relationship HH alignment <= LL alignment.
215 #define LL_RESERVED_SPACE(dev) \
216 (((dev)->hard_header_len&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
217 #define LL_RESERVED_SPACE_EXTRA(dev,extra) \
218 ((((dev)->hard_header_len+extra)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
220 /* These flag bits are private to the generic network queueing
221 * layer, they may not be explicitly referenced by any other
229 __LINK_STATE_PRESENT
,
231 __LINK_STATE_NOCARRIER
,
232 __LINK_STATE_RX_SCHED
,
233 __LINK_STATE_LINKWATCH_PENDING
,
234 __LINK_STATE_DORMANT
,
239 * This structure holds at boot time configured netdevice settings. They
240 * are then used in the device probing.
242 struct netdev_boot_setup
{
246 #define NETDEV_BOOT_SETUP_MAX 8
248 extern int __init
netdev_boot_setup(char *str
);
251 * The DEVICE structure.
252 * Actually, this whole structure is a big mistake. It mixes I/O
253 * data with strictly "high-level" data, and it has to know about
254 * almost every data structure used in the INET module.
256 * FIXME: cleanup struct net_device such that network protocol info
264 * This is the first field of the "visible" part of this structure
265 * (i.e. as seen by users in the "Space.c" file). It is the name
269 /* device name hash chain */
270 struct hlist_node name_hlist
;
273 * I/O specific fields
274 * FIXME: Merge these and struct ifmap into one
276 unsigned long mem_end
; /* shared mem end */
277 unsigned long mem_start
; /* shared mem start */
278 unsigned long base_addr
; /* device I/O address */
279 unsigned int irq
; /* device IRQ number */
282 * Some hardware also needs these fields, but they are not
283 * part of the usual set specified in Space.c.
286 unsigned char if_port
; /* Selectable AUI, TP,..*/
287 unsigned char dma
; /* DMA channel */
291 struct net_device
*next
;
293 /* The device initialization function. Called only once. */
294 int (*init
)(struct net_device
*dev
);
296 /* ------- Fields preinitialized in Space.c finish here ------- */
298 /* Net device features */
299 unsigned long features
;
300 #define NETIF_F_SG 1 /* Scatter/gather IO. */
301 #define NETIF_F_IP_CSUM 2 /* Can checksum only TCP/UDP over IPv4. */
302 #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
303 #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
304 #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
305 #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
306 #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
307 #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
308 #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
309 #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
310 #define NETIF_F_TSO 2048 /* Can offload TCP/IP segmentation */
311 #define NETIF_F_LLTX 4096 /* LockLess TX */
312 #define NETIF_F_UFO 8192 /* Can offload UDP Large Send*/
314 struct net_device
*next_sched
;
316 /* Interface index. Unique device identifier */
321 struct net_device_stats
* (*get_stats
)(struct net_device
*dev
);
322 struct iw_statistics
* (*get_wireless_stats
)(struct net_device
*dev
);
324 /* List of functions to handle Wireless Extensions (instead of ioctl).
325 * See <net/iw_handler.h> for details. Jean II */
326 const struct iw_handler_def
* wireless_handlers
;
327 /* Instance data managed by the core of Wireless Extensions. */
328 struct iw_public_data
* wireless_data
;
330 struct ethtool_ops
*ethtool_ops
;
333 * This marks the end of the "visible" part of the structure. All
334 * fields hereafter are internal to the system, and may change at
335 * will (read: may be cleaned up at will).
339 unsigned int flags
; /* interface flags (a la BSD) */
340 unsigned short gflags
;
341 unsigned short priv_flags
; /* Like 'flags' but invisible to userspace. */
342 unsigned short padded
; /* How much padding added by alloc_netdev() */
344 unsigned char operstate
; /* RFC2863 operstate */
345 unsigned char link_mode
; /* mapping policy to operstate */
347 unsigned mtu
; /* interface MTU value */
348 unsigned short type
; /* interface hardware type */
349 unsigned short hard_header_len
; /* hardware hdr length */
351 struct net_device
*master
; /* Pointer to master device of a group,
352 * which this device is member of.
355 /* Interface address info. */
356 unsigned char perm_addr
[MAX_ADDR_LEN
]; /* permanent hw address */
357 unsigned char addr_len
; /* hardware address length */
358 unsigned short dev_id
; /* for shared network cards */
360 struct dev_mc_list
*mc_list
; /* Multicast mac addresses */
361 int mc_count
; /* Number of installed mcasts */
366 /* Protocol specific pointers */
368 void *atalk_ptr
; /* AppleTalk link */
369 void *ip_ptr
; /* IPv4 specific data */
370 void *dn_ptr
; /* DECnet specific data */
371 void *ip6_ptr
; /* IPv6 specific data */
372 void *ec_ptr
; /* Econet specific data */
373 void *ax25_ptr
; /* AX.25 specific data */
376 * Cache line mostly used on receive path (including eth_type_trans())
378 struct list_head poll_list ____cacheline_aligned_in_smp
;
379 /* Link to poll list */
381 int (*poll
) (struct net_device
*dev
, int *quota
);
384 unsigned long last_rx
; /* Time of last Rx */
385 /* Interface address info used in eth_type_trans() */
386 unsigned char dev_addr
[MAX_ADDR_LEN
]; /* hw address, (before bcast
387 because most packets are unicast) */
389 unsigned char broadcast
[MAX_ADDR_LEN
]; /* hw bcast add */
392 * Cache line mostly used on queue transmit path (qdisc)
394 /* device queue lock */
395 spinlock_t queue_lock ____cacheline_aligned_in_smp
;
397 struct Qdisc
*qdisc_sleeping
;
398 struct list_head qdisc_list
;
399 unsigned long tx_queue_len
; /* Max frames per queue allowed */
401 /* ingress path synchronizer */
402 spinlock_t ingress_lock
;
403 struct Qdisc
*qdisc_ingress
;
406 * One part is mostly used on xmit path (device)
408 /* hard_start_xmit synchronizer */
409 spinlock_t xmit_lock ____cacheline_aligned_in_smp
;
410 /* cpu id of processor entered to hard_start_xmit or -1,
411 if nobody entered there.
414 void *priv
; /* pointer to private data */
415 int (*hard_start_xmit
) (struct sk_buff
*skb
,
416 struct net_device
*dev
);
417 /* These may be needed for future network-power-down code. */
418 unsigned long trans_start
; /* Time (in jiffies) of last Tx */
420 int watchdog_timeo
; /* used by dev_watchdog() */
421 struct timer_list watchdog_timer
;
424 * refcnt is a very hot point, so align it on SMP
426 /* Number of references to this device */
427 atomic_t refcnt ____cacheline_aligned_in_smp
;
429 /* delayed register/unregister */
430 struct list_head todo_list
;
431 /* device index hash chain */
432 struct hlist_node index_hlist
;
434 /* register/unregister state machine */
435 enum { NETREG_UNINITIALIZED
=0,
436 NETREG_REGISTERED
, /* completed register_netdevice */
437 NETREG_UNREGISTERING
, /* called unregister_netdevice */
438 NETREG_UNREGISTERED
, /* completed unregister todo */
439 NETREG_RELEASED
, /* called free_netdev */
442 /* Called after device is detached from network. */
443 void (*uninit
)(struct net_device
*dev
);
444 /* Called after last user reference disappears. */
445 void (*destructor
)(struct net_device
*dev
);
447 /* Pointers to interface service routines. */
448 int (*open
)(struct net_device
*dev
);
449 int (*stop
)(struct net_device
*dev
);
450 #define HAVE_NETDEV_POLL
451 int (*hard_header
) (struct sk_buff
*skb
,
452 struct net_device
*dev
,
457 int (*rebuild_header
)(struct sk_buff
*skb
);
458 #define HAVE_MULTICAST
459 void (*set_multicast_list
)(struct net_device
*dev
);
460 #define HAVE_SET_MAC_ADDR
461 int (*set_mac_address
)(struct net_device
*dev
,
463 #define HAVE_PRIVATE_IOCTL
464 int (*do_ioctl
)(struct net_device
*dev
,
465 struct ifreq
*ifr
, int cmd
);
466 #define HAVE_SET_CONFIG
467 int (*set_config
)(struct net_device
*dev
,
469 #define HAVE_HEADER_CACHE
470 int (*hard_header_cache
)(struct neighbour
*neigh
,
471 struct hh_cache
*hh
);
472 void (*header_cache_update
)(struct hh_cache
*hh
,
473 struct net_device
*dev
,
474 unsigned char * haddr
);
475 #define HAVE_CHANGE_MTU
476 int (*change_mtu
)(struct net_device
*dev
, int new_mtu
);
478 #define HAVE_TX_TIMEOUT
479 void (*tx_timeout
) (struct net_device
*dev
);
481 void (*vlan_rx_register
)(struct net_device
*dev
,
482 struct vlan_group
*grp
);
483 void (*vlan_rx_add_vid
)(struct net_device
*dev
,
485 void (*vlan_rx_kill_vid
)(struct net_device
*dev
,
488 int (*hard_header_parse
)(struct sk_buff
*skb
,
489 unsigned char *haddr
);
490 int (*neigh_setup
)(struct net_device
*dev
, struct neigh_parms
*);
491 #ifdef CONFIG_NETPOLL
492 struct netpoll_info
*npinfo
;
494 #ifdef CONFIG_NET_POLL_CONTROLLER
495 void (*poll_controller
)(struct net_device
*dev
);
499 struct net_bridge_port
*br_port
;
501 #ifdef CONFIG_NET_DIVERT
502 /* this will get initialized at each interface type init routine */
503 struct divert_blk
*divert
;
504 #endif /* CONFIG_NET_DIVERT */
506 /* class/net/name entry */
507 struct class_device class_dev
;
508 /* space for optional statistics and wireless sysfs groups */
509 struct attribute_group
*sysfs_groups
[3];
512 #define NETDEV_ALIGN 32
513 #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1)
515 static inline void *netdev_priv(struct net_device
*dev
)
517 return (char *)dev
+ ((sizeof(struct net_device
)
518 + NETDEV_ALIGN_CONST
)
519 & ~NETDEV_ALIGN_CONST
);
522 #define SET_MODULE_OWNER(dev) do { } while (0)
523 /* Set the sysfs physical device reference for the network logical device
524 * if set prior to registration will cause a symlink during initialization.
526 #define SET_NETDEV_DEV(net, pdev) ((net)->class_dev.dev = (pdev))
529 __be16 type
; /* This is really htons(ether_type). */
530 struct net_device
*dev
; /* NULL is wildcarded here */
531 int (*func
) (struct sk_buff
*,
533 struct packet_type
*,
534 struct net_device
*);
535 void *af_packet_priv
;
536 struct list_head list
;
539 #include <linux/interrupt.h>
540 #include <linux/notifier.h>
542 extern struct net_device loopback_dev
; /* The loopback */
543 extern struct net_device
*dev_base
; /* All devices */
544 extern rwlock_t dev_base_lock
; /* Device list lock */
546 extern int netdev_boot_setup_check(struct net_device
*dev
);
547 extern unsigned long netdev_boot_base(const char *prefix
, int unit
);
548 extern struct net_device
*dev_getbyhwaddr(unsigned short type
, char *hwaddr
);
549 extern struct net_device
*dev_getfirstbyhwtype(unsigned short type
);
550 extern void dev_add_pack(struct packet_type
*pt
);
551 extern void dev_remove_pack(struct packet_type
*pt
);
552 extern void __dev_remove_pack(struct packet_type
*pt
);
554 extern struct net_device
*dev_get_by_flags(unsigned short flags
,
555 unsigned short mask
);
556 extern struct net_device
*dev_get_by_name(const char *name
);
557 extern struct net_device
*__dev_get_by_name(const char *name
);
558 extern int dev_alloc_name(struct net_device
*dev
, const char *name
);
559 extern int dev_open(struct net_device
*dev
);
560 extern int dev_close(struct net_device
*dev
);
561 extern int dev_queue_xmit(struct sk_buff
*skb
);
562 extern int register_netdevice(struct net_device
*dev
);
563 extern int unregister_netdevice(struct net_device
*dev
);
564 extern void free_netdev(struct net_device
*dev
);
565 extern void synchronize_net(void);
566 extern int register_netdevice_notifier(struct notifier_block
*nb
);
567 extern int unregister_netdevice_notifier(struct notifier_block
*nb
);
568 extern int call_netdevice_notifiers(unsigned long val
, void *v
);
569 extern struct net_device
*dev_get_by_index(int ifindex
);
570 extern struct net_device
*__dev_get_by_index(int ifindex
);
571 extern int dev_restart(struct net_device
*dev
);
572 #ifdef CONFIG_NETPOLL_TRAP
573 extern int netpoll_trap(void);
576 typedef int gifconf_func_t(struct net_device
* dev
, char __user
* bufptr
, int len
);
577 extern int register_gifconf(unsigned int family
, gifconf_func_t
* gifconf
);
578 static inline int unregister_gifconf(unsigned int family
)
580 return register_gifconf(family
, NULL
);
584 * Incoming packets are placed on per-cpu queues so that
585 * no locking is needed.
590 struct net_device
*output_queue
;
591 struct sk_buff_head input_pkt_queue
;
592 struct list_head poll_list
;
593 struct sk_buff
*completion_queue
;
595 struct net_device backlog_dev
; /* Sorry. 8) */
598 DECLARE_PER_CPU(struct softnet_data
,softnet_data
);
600 #define HAVE_NETIF_QUEUE
602 extern void __netif_schedule(struct net_device
*dev
);
604 static inline void netif_schedule(struct net_device
*dev
)
606 if (!test_bit(__LINK_STATE_XOFF
, &dev
->state
))
607 __netif_schedule(dev
);
610 static inline void netif_start_queue(struct net_device
*dev
)
612 clear_bit(__LINK_STATE_XOFF
, &dev
->state
);
615 static inline void netif_wake_queue(struct net_device
*dev
)
617 #ifdef CONFIG_NETPOLL_TRAP
621 if (test_and_clear_bit(__LINK_STATE_XOFF
, &dev
->state
))
622 __netif_schedule(dev
);
625 static inline void netif_stop_queue(struct net_device
*dev
)
627 #ifdef CONFIG_NETPOLL_TRAP
631 set_bit(__LINK_STATE_XOFF
, &dev
->state
);
634 static inline int netif_queue_stopped(const struct net_device
*dev
)
636 return test_bit(__LINK_STATE_XOFF
, &dev
->state
);
639 static inline int netif_running(const struct net_device
*dev
)
641 return test_bit(__LINK_STATE_START
, &dev
->state
);
645 /* Use this variant when it is known for sure that it
646 * is executing from interrupt context.
648 static inline void dev_kfree_skb_irq(struct sk_buff
*skb
)
650 if (atomic_dec_and_test(&skb
->users
)) {
651 struct softnet_data
*sd
;
654 local_irq_save(flags
);
655 sd
= &__get_cpu_var(softnet_data
);
656 skb
->next
= sd
->completion_queue
;
657 sd
->completion_queue
= skb
;
658 raise_softirq_irqoff(NET_TX_SOFTIRQ
);
659 local_irq_restore(flags
);
663 /* Use this variant in places where it could be invoked
664 * either from interrupt or non-interrupt context.
666 extern void dev_kfree_skb_any(struct sk_buff
*skb
);
668 #define HAVE_NETIF_RX 1
669 extern int netif_rx(struct sk_buff
*skb
);
670 extern int netif_rx_ni(struct sk_buff
*skb
);
671 #define HAVE_NETIF_RECEIVE_SKB 1
672 extern int netif_receive_skb(struct sk_buff
*skb
);
673 extern int dev_valid_name(const char *name
);
674 extern int dev_ioctl(unsigned int cmd
, void __user
*);
675 extern int dev_ethtool(struct ifreq
*);
676 extern unsigned dev_get_flags(const struct net_device
*);
677 extern int dev_change_flags(struct net_device
*, unsigned);
678 extern int dev_change_name(struct net_device
*, char *);
679 extern int dev_set_mtu(struct net_device
*, int);
680 extern int dev_set_mac_address(struct net_device
*,
682 extern void dev_queue_xmit_nit(struct sk_buff
*skb
, struct net_device
*dev
);
684 extern void dev_init(void);
686 extern int netdev_nit
;
687 extern int netdev_budget
;
689 /* Called by rtnetlink.c:rtnl_unlock() */
690 extern void netdev_run_todo(void);
692 static inline void dev_put(struct net_device
*dev
)
694 atomic_dec(&dev
->refcnt
);
697 static inline void dev_hold(struct net_device
*dev
)
699 atomic_inc(&dev
->refcnt
);
702 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
703 * and _off may be called from IRQ context, but it is caller
704 * who is responsible for serialization of these calls.
706 * The name carrier is inappropriate, these functions should really be
707 * called netif_lowerlayer_*() because they represent the state of any
708 * kind of lower layer not just hardware media.
711 extern void linkwatch_fire_event(struct net_device
*dev
);
713 static inline int netif_carrier_ok(const struct net_device
*dev
)
715 return !test_bit(__LINK_STATE_NOCARRIER
, &dev
->state
);
718 extern void __netdev_watchdog_up(struct net_device
*dev
);
720 extern void netif_carrier_on(struct net_device
*dev
);
722 extern void netif_carrier_off(struct net_device
*dev
);
724 static inline void netif_dormant_on(struct net_device
*dev
)
726 if (!test_and_set_bit(__LINK_STATE_DORMANT
, &dev
->state
))
727 linkwatch_fire_event(dev
);
730 static inline void netif_dormant_off(struct net_device
*dev
)
732 if (test_and_clear_bit(__LINK_STATE_DORMANT
, &dev
->state
))
733 linkwatch_fire_event(dev
);
736 static inline int netif_dormant(const struct net_device
*dev
)
738 return test_bit(__LINK_STATE_DORMANT
, &dev
->state
);
742 static inline int netif_oper_up(const struct net_device
*dev
) {
743 return (dev
->operstate
== IF_OPER_UP
||
744 dev
->operstate
== IF_OPER_UNKNOWN
/* backward compat */);
748 static inline int netif_device_present(struct net_device
*dev
)
750 return test_bit(__LINK_STATE_PRESENT
, &dev
->state
);
753 extern void netif_device_detach(struct net_device
*dev
);
755 extern void netif_device_attach(struct net_device
*dev
);
758 * Network interface message level settings
760 #define HAVE_NETIF_MSG 1
763 NETIF_MSG_DRV
= 0x0001,
764 NETIF_MSG_PROBE
= 0x0002,
765 NETIF_MSG_LINK
= 0x0004,
766 NETIF_MSG_TIMER
= 0x0008,
767 NETIF_MSG_IFDOWN
= 0x0010,
768 NETIF_MSG_IFUP
= 0x0020,
769 NETIF_MSG_RX_ERR
= 0x0040,
770 NETIF_MSG_TX_ERR
= 0x0080,
771 NETIF_MSG_TX_QUEUED
= 0x0100,
772 NETIF_MSG_INTR
= 0x0200,
773 NETIF_MSG_TX_DONE
= 0x0400,
774 NETIF_MSG_RX_STATUS
= 0x0800,
775 NETIF_MSG_PKTDATA
= 0x1000,
776 NETIF_MSG_HW
= 0x2000,
777 NETIF_MSG_WOL
= 0x4000,
780 #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
781 #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
782 #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
783 #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
784 #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
785 #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
786 #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
787 #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
788 #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
789 #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
790 #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
791 #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
792 #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
793 #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
794 #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
796 static inline u32
netif_msg_init(int debug_value
, int default_msg_enable_bits
)
799 if (debug_value
< 0 || debug_value
>= (sizeof(u32
) * 8))
800 return default_msg_enable_bits
;
801 if (debug_value
== 0) /* no output */
804 return (1 << debug_value
) - 1;
807 /* Test if receive needs to be scheduled */
808 static inline int __netif_rx_schedule_prep(struct net_device
*dev
)
810 return !test_and_set_bit(__LINK_STATE_RX_SCHED
, &dev
->state
);
813 /* Test if receive needs to be scheduled but only if up */
814 static inline int netif_rx_schedule_prep(struct net_device
*dev
)
816 return netif_running(dev
) && __netif_rx_schedule_prep(dev
);
819 /* Add interface to tail of rx poll list. This assumes that _prep has
820 * already been called and returned 1.
823 extern void __netif_rx_schedule(struct net_device
*dev
);
825 /* Try to reschedule poll. Called by irq handler. */
827 static inline void netif_rx_schedule(struct net_device
*dev
)
829 if (netif_rx_schedule_prep(dev
))
830 __netif_rx_schedule(dev
);
833 /* Try to reschedule poll. Called by dev->poll() after netif_rx_complete().
834 * Do not inline this?
836 static inline int netif_rx_reschedule(struct net_device
*dev
, int undo
)
838 if (netif_rx_schedule_prep(dev
)) {
843 local_irq_save(flags
);
844 list_add_tail(&dev
->poll_list
, &__get_cpu_var(softnet_data
).poll_list
);
845 __raise_softirq_irqoff(NET_RX_SOFTIRQ
);
846 local_irq_restore(flags
);
852 /* Remove interface from poll list: it must be in the poll list
853 * on current cpu. This primitive is called by dev->poll(), when
854 * it completes the work. The device cannot be out of poll list at this
855 * moment, it is BUG().
857 static inline void netif_rx_complete(struct net_device
*dev
)
861 local_irq_save(flags
);
862 BUG_ON(!test_bit(__LINK_STATE_RX_SCHED
, &dev
->state
));
863 list_del(&dev
->poll_list
);
864 smp_mb__before_clear_bit();
865 clear_bit(__LINK_STATE_RX_SCHED
, &dev
->state
);
866 local_irq_restore(flags
);
869 static inline void netif_poll_disable(struct net_device
*dev
)
871 while (test_and_set_bit(__LINK_STATE_RX_SCHED
, &dev
->state
))
873 schedule_timeout_interruptible(1);
876 static inline void netif_poll_enable(struct net_device
*dev
)
878 clear_bit(__LINK_STATE_RX_SCHED
, &dev
->state
);
881 /* same as netif_rx_complete, except that local_irq_save(flags)
882 * has already been issued
884 static inline void __netif_rx_complete(struct net_device
*dev
)
886 BUG_ON(!test_bit(__LINK_STATE_RX_SCHED
, &dev
->state
));
887 list_del(&dev
->poll_list
);
888 smp_mb__before_clear_bit();
889 clear_bit(__LINK_STATE_RX_SCHED
, &dev
->state
);
892 static inline void netif_tx_disable(struct net_device
*dev
)
894 spin_lock_bh(&dev
->xmit_lock
);
895 netif_stop_queue(dev
);
896 spin_unlock_bh(&dev
->xmit_lock
);
899 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
901 extern void ether_setup(struct net_device
*dev
);
903 /* Support for loadable net-drivers */
904 extern struct net_device
*alloc_netdev(int sizeof_priv
, const char *name
,
905 void (*setup
)(struct net_device
*));
906 extern int register_netdev(struct net_device
*dev
);
907 extern void unregister_netdev(struct net_device
*dev
);
908 /* Functions used for multicast support */
909 extern void dev_mc_upload(struct net_device
*dev
);
910 extern int dev_mc_delete(struct net_device
*dev
, void *addr
, int alen
, int all
);
911 extern int dev_mc_add(struct net_device
*dev
, void *addr
, int alen
, int newonly
);
912 extern void dev_mc_discard(struct net_device
*dev
);
913 extern void dev_set_promiscuity(struct net_device
*dev
, int inc
);
914 extern void dev_set_allmulti(struct net_device
*dev
, int inc
);
915 extern void netdev_state_change(struct net_device
*dev
);
916 extern void netdev_features_change(struct net_device
*dev
);
917 /* Load a device via the kmod */
918 extern void dev_load(const char *name
);
919 extern void dev_mcast_init(void);
920 extern int netdev_max_backlog
;
922 extern int netdev_set_master(struct net_device
*dev
, struct net_device
*master
);
923 extern int skb_checksum_help(struct sk_buff
*skb
, int inward
);
925 extern void netdev_rx_csum_fault(struct net_device
*dev
);
927 static inline void netdev_rx_csum_fault(struct net_device
*dev
)
931 /* rx skb timestamps */
932 extern void net_enable_timestamp(void);
933 extern void net_disable_timestamp(void);
935 #ifdef CONFIG_PROC_FS
936 extern void *dev_seq_start(struct seq_file
*seq
, loff_t
*pos
);
937 extern void *dev_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
);
938 extern void dev_seq_stop(struct seq_file
*seq
, void *v
);
941 extern void linkwatch_run_queue(void);
943 #endif /* __KERNEL__ */
945 #endif /* _LINUX_DEV_H */