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 <linux/timer.h>
34 #include <linux/delay.h>
35 #include <asm/atomic.h>
36 #include <asm/cache.h>
37 #include <asm/byteorder.h>
39 #include <linux/device.h>
40 #include <linux/percpu.h>
41 #include <linux/dmaengine.h>
42 #include <linux/workqueue.h>
44 #include <net/net_namespace.h>
51 /* source back-compat hooks */
52 #define SET_ETHTOOL_OPS(netdev,ops) \
53 ( (netdev)->ethtool_ops = (ops) )
55 #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev
56 functions are available. */
57 #define HAVE_FREE_NETDEV /* free_netdev() */
58 #define HAVE_NETDEV_PRIV /* netdev_priv() */
60 #define NET_XMIT_SUCCESS 0
61 #define NET_XMIT_DROP 1 /* skb dropped */
62 #define NET_XMIT_CN 2 /* congestion notification */
63 #define NET_XMIT_POLICED 3 /* skb is shot by police */
64 #define NET_XMIT_BYPASS 4 /* packet does not leave via dequeue;
65 (TC use only - dev_queue_xmit
66 returns this as NET_XMIT_SUCCESS) */
68 /* Backlog congestion levels */
69 #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
70 #define NET_RX_DROP 1 /* packet dropped */
71 #define NET_RX_CN_LOW 2 /* storm alert, just in case */
72 #define NET_RX_CN_MOD 3 /* Storm on its way! */
73 #define NET_RX_CN_HIGH 4 /* The storm is here */
74 #define NET_RX_BAD 5 /* packet dropped due to kernel error */
76 /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
77 * indicates that the device will soon be dropping packets, or already drops
78 * some packets of the same priority; prompting us to send less aggressively. */
79 #define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e))
80 #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
84 #define MAX_ADDR_LEN 32 /* Largest hardware address length */
86 /* Driver transmit return codes */
87 #define NETDEV_TX_OK 0 /* driver took care of packet */
88 #define NETDEV_TX_BUSY 1 /* driver tx path was busy*/
89 #define NETDEV_TX_LOCKED -1 /* driver tx lock was already taken */
92 * Compute the worst case header length according to the protocols
96 #if !defined(CONFIG_AX25) && !defined(CONFIG_AX25_MODULE) && !defined(CONFIG_TR)
97 #define LL_MAX_HEADER 32
99 #if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
100 #define LL_MAX_HEADER 96
102 #define LL_MAX_HEADER 48
106 #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
107 !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \
108 !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
109 !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
110 #define MAX_HEADER LL_MAX_HEADER
112 #define MAX_HEADER (LL_MAX_HEADER + 48)
115 struct net_device_subqueue
117 /* Give a control state for each queue. This struct may contain
118 * per-queue locks in the future.
124 * Network device statistics. Akin to the 2.0 ether stats but
125 * with byte counters.
128 struct net_device_stats
130 unsigned long rx_packets
; /* total packets received */
131 unsigned long tx_packets
; /* total packets transmitted */
132 unsigned long rx_bytes
; /* total bytes received */
133 unsigned long tx_bytes
; /* total bytes transmitted */
134 unsigned long rx_errors
; /* bad packets received */
135 unsigned long tx_errors
; /* packet transmit problems */
136 unsigned long rx_dropped
; /* no space in linux buffers */
137 unsigned long tx_dropped
; /* no space available in linux */
138 unsigned long multicast
; /* multicast packets received */
139 unsigned long collisions
;
141 /* detailed rx_errors: */
142 unsigned long rx_length_errors
;
143 unsigned long rx_over_errors
; /* receiver ring buff overflow */
144 unsigned long rx_crc_errors
; /* recved pkt with crc error */
145 unsigned long rx_frame_errors
; /* recv'd frame alignment error */
146 unsigned long rx_fifo_errors
; /* recv'r fifo overrun */
147 unsigned long rx_missed_errors
; /* receiver missed packet */
149 /* detailed tx_errors */
150 unsigned long tx_aborted_errors
;
151 unsigned long tx_carrier_errors
;
152 unsigned long tx_fifo_errors
;
153 unsigned long tx_heartbeat_errors
;
154 unsigned long tx_window_errors
;
157 unsigned long rx_compressed
;
158 unsigned long tx_compressed
;
162 /* Media selection options. */
175 #include <linux/cache.h>
176 #include <linux/skbuff.h>
182 struct netif_rx_stats
186 unsigned time_squeeze
;
187 unsigned cpu_collision
;
190 DECLARE_PER_CPU(struct netif_rx_stats
, netdev_rx_stat
);
194 struct dev_addr_list
*next
;
195 u8 da_addr
[MAX_ADDR_LEN
];
203 * We tag multicasts with these structures.
206 #define dev_mc_list dev_addr_list
207 #define dmi_addr da_addr
208 #define dmi_addrlen da_addrlen
209 #define dmi_users da_users
210 #define dmi_gusers da_gusers
214 struct hh_cache
*hh_next
; /* Next entry */
215 atomic_t hh_refcnt
; /* number of users */
217 * We want hh_output, hh_len, hh_lock and hh_data be a in a separate
219 * They are mostly read, but hh_refcnt may be changed quite frequently,
220 * incurring cache line ping pongs.
222 __be16 hh_type ____cacheline_aligned_in_smp
;
223 /* protocol identifier, f.e ETH_P_IP
224 * NOTE: For VLANs, this will be the
225 * encapuslated type. --BLG
227 u16 hh_len
; /* length of header */
228 int (*hh_output
)(struct sk_buff
*skb
);
231 /* cached hardware header; allow for machine alignment needs. */
232 #define HH_DATA_MOD 16
233 #define HH_DATA_OFF(__len) \
234 (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
235 #define HH_DATA_ALIGN(__len) \
236 (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
237 unsigned long hh_data
[HH_DATA_ALIGN(LL_MAX_HEADER
) / sizeof(long)];
240 /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
242 * dev->hard_header_len ? (dev->hard_header_len +
243 * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
245 * We could use other alignment values, but we must maintain the
246 * relationship HH alignment <= LL alignment.
248 #define LL_RESERVED_SPACE(dev) \
249 (((dev)->hard_header_len&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
250 #define LL_RESERVED_SPACE_EXTRA(dev,extra) \
251 ((((dev)->hard_header_len+extra)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
254 int (*create
) (struct sk_buff
*skb
, struct net_device
*dev
,
255 unsigned short type
, const void *daddr
,
256 const void *saddr
, unsigned len
);
257 int (*parse
)(const struct sk_buff
*skb
, unsigned char *haddr
);
258 int (*rebuild
)(struct sk_buff
*skb
);
259 #define HAVE_HEADER_CACHE
260 int (*cache
)(const struct neighbour
*neigh
, struct hh_cache
*hh
);
261 void (*cache_update
)(struct hh_cache
*hh
,
262 const struct net_device
*dev
,
263 const unsigned char *haddr
);
266 /* These flag bits are private to the generic network queueing
267 * layer, they may not be explicitly referenced by any other
275 __LINK_STATE_PRESENT
,
277 __LINK_STATE_NOCARRIER
,
278 __LINK_STATE_LINKWATCH_PENDING
,
279 __LINK_STATE_DORMANT
,
280 __LINK_STATE_QDISC_RUNNING
,
285 * This structure holds at boot time configured netdevice settings. They
286 * are then used in the device probing.
288 struct netdev_boot_setup
{
292 #define NETDEV_BOOT_SETUP_MAX 8
294 extern int __init
netdev_boot_setup(char *str
);
297 * Structure for NAPI scheduling similar to tasklet but with weighting
300 /* The poll_list must only be managed by the entity which
301 * changes the state of the NAPI_STATE_SCHED bit. This means
302 * whoever atomically sets that bit can add this napi_struct
303 * to the per-cpu poll_list, and whoever clears that bit
304 * can remove from the list right before clearing the bit.
306 struct list_head poll_list
;
310 int (*poll
)(struct napi_struct
*, int);
311 #ifdef CONFIG_NETPOLL
312 spinlock_t poll_lock
;
314 struct net_device
*dev
;
315 struct list_head dev_list
;
321 NAPI_STATE_SCHED
, /* Poll is scheduled */
322 NAPI_STATE_DISABLE
, /* Disable pending */
325 extern void __napi_schedule(struct napi_struct
*n
);
327 static inline int napi_disable_pending(struct napi_struct
*n
)
329 return test_bit(NAPI_STATE_DISABLE
, &n
->state
);
333 * napi_schedule_prep - check if napi can be scheduled
336 * Test if NAPI routine is already running, and if not mark
337 * it as running. This is used as a condition variable
338 * insure only one NAPI poll instance runs. We also make
339 * sure there is no pending NAPI disable.
341 static inline int napi_schedule_prep(struct napi_struct
*n
)
343 return !napi_disable_pending(n
) &&
344 !test_and_set_bit(NAPI_STATE_SCHED
, &n
->state
);
348 * napi_schedule - schedule NAPI poll
351 * Schedule NAPI poll routine to be called if it is not already
354 static inline void napi_schedule(struct napi_struct
*n
)
356 if (napi_schedule_prep(n
))
360 /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */
361 static inline int napi_reschedule(struct napi_struct
*napi
)
363 if (napi_schedule_prep(napi
)) {
364 __napi_schedule(napi
);
371 * napi_complete - NAPI processing complete
374 * Mark NAPI processing as complete.
376 static inline void __napi_complete(struct napi_struct
*n
)
378 BUG_ON(!test_bit(NAPI_STATE_SCHED
, &n
->state
));
379 list_del(&n
->poll_list
);
380 smp_mb__before_clear_bit();
381 clear_bit(NAPI_STATE_SCHED
, &n
->state
);
384 static inline void napi_complete(struct napi_struct
*n
)
388 local_irq_save(flags
);
390 local_irq_restore(flags
);
394 * napi_disable - prevent NAPI from scheduling
397 * Stop NAPI from being scheduled on this context.
398 * Waits till any outstanding processing completes.
400 static inline void napi_disable(struct napi_struct
*n
)
402 set_bit(NAPI_STATE_DISABLE
, &n
->state
);
403 while (test_and_set_bit(NAPI_STATE_SCHED
, &n
->state
))
405 clear_bit(NAPI_STATE_DISABLE
, &n
->state
);
409 * napi_enable - enable NAPI scheduling
412 * Resume NAPI from being scheduled on this context.
413 * Must be paired with napi_disable.
415 static inline void napi_enable(struct napi_struct
*n
)
417 BUG_ON(!test_bit(NAPI_STATE_SCHED
, &n
->state
));
418 smp_mb__before_clear_bit();
419 clear_bit(NAPI_STATE_SCHED
, &n
->state
);
424 * napi_synchronize - wait until NAPI is not running
427 * Wait until NAPI is done being scheduled on this context.
428 * Waits till any outstanding processing completes but
429 * does not disable future activations.
431 static inline void napi_synchronize(const struct napi_struct
*n
)
433 while (test_bit(NAPI_STATE_SCHED
, &n
->state
))
437 # define napi_synchronize(n) barrier()
441 * The DEVICE structure.
442 * Actually, this whole structure is a big mistake. It mixes I/O
443 * data with strictly "high-level" data, and it has to know about
444 * almost every data structure used in the INET module.
446 * FIXME: cleanup struct net_device such that network protocol info
454 * This is the first field of the "visible" part of this structure
455 * (i.e. as seen by users in the "Space.c" file). It is the name
459 /* device name hash chain */
460 struct hlist_node name_hlist
;
463 * I/O specific fields
464 * FIXME: Merge these and struct ifmap into one
466 unsigned long mem_end
; /* shared mem end */
467 unsigned long mem_start
; /* shared mem start */
468 unsigned long base_addr
; /* device I/O address */
469 unsigned int irq
; /* device IRQ number */
472 * Some hardware also needs these fields, but they are not
473 * part of the usual set specified in Space.c.
476 unsigned char if_port
; /* Selectable AUI, TP,..*/
477 unsigned char dma
; /* DMA channel */
481 struct list_head dev_list
;
482 #ifdef CONFIG_NETPOLL
483 struct list_head napi_list
;
486 /* The device initialization function. Called only once. */
487 int (*init
)(struct net_device
*dev
);
489 /* ------- Fields preinitialized in Space.c finish here ------- */
491 /* Net device features */
492 unsigned long features
;
493 #define NETIF_F_SG 1 /* Scatter/gather IO. */
494 #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
495 #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
496 #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
497 #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
498 #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
499 #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
500 #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
501 #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
502 #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
503 #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
504 #define NETIF_F_GSO 2048 /* Enable software GSO. */
505 #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
506 /* do not use LLTX in new drivers */
507 #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
508 #define NETIF_F_MULTI_QUEUE 16384 /* Has multiple TX/RX queues */
509 #define NETIF_F_LRO 32768 /* large receive offload */
511 /* Segmentation offload features */
512 #define NETIF_F_GSO_SHIFT 16
513 #define NETIF_F_GSO_MASK 0xffff0000
514 #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
515 #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
516 #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
517 #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
518 #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
520 /* List of features with software fallbacks. */
521 #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
524 #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
525 #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
526 #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
527 #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
529 struct net_device
*next_sched
;
531 /* Interface index. Unique device identifier */
536 struct net_device_stats
* (*get_stats
)(struct net_device
*dev
);
537 struct net_device_stats stats
;
539 #ifdef CONFIG_WIRELESS_EXT
540 /* List of functions to handle Wireless Extensions (instead of ioctl).
541 * See <net/iw_handler.h> for details. Jean II */
542 const struct iw_handler_def
* wireless_handlers
;
543 /* Instance data managed by the core of Wireless Extensions. */
544 struct iw_public_data
* wireless_data
;
546 const struct ethtool_ops
*ethtool_ops
;
548 /* Hardware header description */
549 const struct header_ops
*header_ops
;
552 * This marks the end of the "visible" part of the structure. All
553 * fields hereafter are internal to the system, and may change at
554 * will (read: may be cleaned up at will).
558 unsigned int flags
; /* interface flags (a la BSD) */
559 unsigned short gflags
;
560 unsigned short priv_flags
; /* Like 'flags' but invisible to userspace. */
561 unsigned short padded
; /* How much padding added by alloc_netdev() */
563 unsigned char operstate
; /* RFC2863 operstate */
564 unsigned char link_mode
; /* mapping policy to operstate */
566 unsigned mtu
; /* interface MTU value */
567 unsigned short type
; /* interface hardware type */
568 unsigned short hard_header_len
; /* hardware hdr length */
570 struct net_device
*master
; /* Pointer to master device of a group,
571 * which this device is member of.
574 /* Interface address info. */
575 unsigned char perm_addr
[MAX_ADDR_LEN
]; /* permanent hw address */
576 unsigned char addr_len
; /* hardware address length */
577 unsigned short dev_id
; /* for shared network cards */
579 struct dev_addr_list
*uc_list
; /* Secondary unicast mac addresses */
580 int uc_count
; /* Number of installed ucasts */
582 struct dev_addr_list
*mc_list
; /* Multicast mac addresses */
583 int mc_count
; /* Number of installed mcasts */
588 /* Protocol specific pointers */
590 void *atalk_ptr
; /* AppleTalk link */
591 void *ip_ptr
; /* IPv4 specific data */
592 void *dn_ptr
; /* DECnet specific data */
593 void *ip6_ptr
; /* IPv6 specific data */
594 void *ec_ptr
; /* Econet specific data */
595 void *ax25_ptr
; /* AX.25 specific data */
596 struct wireless_dev
*ieee80211_ptr
; /* IEEE 802.11 specific data,
597 assign before registering */
600 * Cache line mostly used on receive path (including eth_type_trans())
602 unsigned long last_rx
; /* Time of last Rx */
603 /* Interface address info used in eth_type_trans() */
604 unsigned char dev_addr
[MAX_ADDR_LEN
]; /* hw address, (before bcast
605 because most packets are unicast) */
607 unsigned char broadcast
[MAX_ADDR_LEN
]; /* hw bcast add */
609 /* ingress path synchronizer */
610 spinlock_t ingress_lock
;
611 struct Qdisc
*qdisc_ingress
;
614 * Cache line mostly used on queue transmit path (qdisc)
616 /* device queue lock */
617 spinlock_t queue_lock ____cacheline_aligned_in_smp
;
619 struct Qdisc
*qdisc_sleeping
;
620 struct list_head qdisc_list
;
621 unsigned long tx_queue_len
; /* Max frames per queue allowed */
623 /* Partially transmitted GSO packet. */
624 struct sk_buff
*gso_skb
;
627 * One part is mostly used on xmit path (device)
629 /* hard_start_xmit synchronizer */
630 spinlock_t _xmit_lock ____cacheline_aligned_in_smp
;
631 /* cpu id of processor entered to hard_start_xmit or -1,
632 if nobody entered there.
635 void *priv
; /* pointer to private data */
636 int (*hard_start_xmit
) (struct sk_buff
*skb
,
637 struct net_device
*dev
);
638 /* These may be needed for future network-power-down code. */
639 unsigned long trans_start
; /* Time (in jiffies) of last Tx */
641 int watchdog_timeo
; /* used by dev_watchdog() */
642 struct timer_list watchdog_timer
;
645 * refcnt is a very hot point, so align it on SMP
647 /* Number of references to this device */
648 atomic_t refcnt ____cacheline_aligned_in_smp
;
650 /* delayed register/unregister */
651 struct list_head todo_list
;
652 /* device index hash chain */
653 struct hlist_node index_hlist
;
655 struct net_device
*link_watch_next
;
657 /* register/unregister state machine */
658 enum { NETREG_UNINITIALIZED
=0,
659 NETREG_REGISTERED
, /* completed register_netdevice */
660 NETREG_UNREGISTERING
, /* called unregister_netdevice */
661 NETREG_UNREGISTERED
, /* completed unregister todo */
662 NETREG_RELEASED
, /* called free_netdev */
665 /* Called after device is detached from network. */
666 void (*uninit
)(struct net_device
*dev
);
667 /* Called after last user reference disappears. */
668 void (*destructor
)(struct net_device
*dev
);
670 /* Pointers to interface service routines. */
671 int (*open
)(struct net_device
*dev
);
672 int (*stop
)(struct net_device
*dev
);
673 #define HAVE_NETDEV_POLL
674 #define HAVE_CHANGE_RX_FLAGS
675 void (*change_rx_flags
)(struct net_device
*dev
,
677 #define HAVE_SET_RX_MODE
678 void (*set_rx_mode
)(struct net_device
*dev
);
679 #define HAVE_MULTICAST
680 void (*set_multicast_list
)(struct net_device
*dev
);
681 #define HAVE_SET_MAC_ADDR
682 int (*set_mac_address
)(struct net_device
*dev
,
684 #define HAVE_VALIDATE_ADDR
685 int (*validate_addr
)(struct net_device
*dev
);
686 #define HAVE_PRIVATE_IOCTL
687 int (*do_ioctl
)(struct net_device
*dev
,
688 struct ifreq
*ifr
, int cmd
);
689 #define HAVE_SET_CONFIG
690 int (*set_config
)(struct net_device
*dev
,
692 #define HAVE_CHANGE_MTU
693 int (*change_mtu
)(struct net_device
*dev
, int new_mtu
);
695 #define HAVE_TX_TIMEOUT
696 void (*tx_timeout
) (struct net_device
*dev
);
698 void (*vlan_rx_register
)(struct net_device
*dev
,
699 struct vlan_group
*grp
);
700 void (*vlan_rx_add_vid
)(struct net_device
*dev
,
702 void (*vlan_rx_kill_vid
)(struct net_device
*dev
,
705 int (*neigh_setup
)(struct net_device
*dev
, struct neigh_parms
*);
706 #ifdef CONFIG_NETPOLL
707 struct netpoll_info
*npinfo
;
709 #ifdef CONFIG_NET_POLL_CONTROLLER
710 void (*poll_controller
)(struct net_device
*dev
);
713 /* Network namespace this network device is inside */
717 struct net_bridge_port
*br_port
;
719 struct macvlan_port
*macvlan_port
;
721 /* class/net/name entry */
723 /* space for optional statistics and wireless sysfs groups */
724 struct attribute_group
*sysfs_groups
[3];
726 /* rtnetlink link ops */
727 const struct rtnl_link_ops
*rtnl_link_ops
;
729 /* The TX queue control structures */
730 unsigned int egress_subqueue_count
;
731 struct net_device_subqueue egress_subqueue
[1];
733 #define to_net_dev(d) container_of(d, struct net_device, dev)
735 #define NETDEV_ALIGN 32
736 #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1)
739 * netdev_priv - access network device private data
740 * @dev: network device
742 * Get network device private data
744 static inline void *netdev_priv(const struct net_device
*dev
)
749 /* Set the sysfs physical device reference for the network logical device
750 * if set prior to registration will cause a symlink during initialization.
752 #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
755 * netif_napi_add - initialize a napi context
756 * @dev: network device
757 * @napi: napi context
758 * @poll: polling function
759 * @weight: default weight
761 * netif_napi_add() must be used to initialize a napi context prior to calling
762 * *any* of the other napi related functions.
764 static inline void netif_napi_add(struct net_device
*dev
,
765 struct napi_struct
*napi
,
766 int (*poll
)(struct napi_struct
*, int),
769 INIT_LIST_HEAD(&napi
->poll_list
);
771 napi
->weight
= weight
;
772 #ifdef CONFIG_NETPOLL
774 list_add(&napi
->dev_list
, &dev
->napi_list
);
775 spin_lock_init(&napi
->poll_lock
);
776 napi
->poll_owner
= -1;
778 set_bit(NAPI_STATE_SCHED
, &napi
->state
);
782 __be16 type
; /* This is really htons(ether_type). */
783 struct net_device
*dev
; /* NULL is wildcarded here */
784 int (*func
) (struct sk_buff
*,
786 struct packet_type
*,
787 struct net_device
*);
788 struct sk_buff
*(*gso_segment
)(struct sk_buff
*skb
,
790 int (*gso_send_check
)(struct sk_buff
*skb
);
791 void *af_packet_priv
;
792 struct list_head list
;
795 #include <linux/interrupt.h>
796 #include <linux/notifier.h>
798 extern rwlock_t dev_base_lock
; /* Device list lock */
801 #define for_each_netdev(net, d) \
802 list_for_each_entry(d, &(net)->dev_base_head, dev_list)
803 #define for_each_netdev_safe(net, d, n) \
804 list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
805 #define for_each_netdev_continue(net, d) \
806 list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
807 #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
809 static inline struct net_device
*next_net_device(struct net_device
*dev
)
811 struct list_head
*lh
;
815 lh
= dev
->dev_list
.next
;
816 return lh
== &net
->dev_base_head
? NULL
: net_device_entry(lh
);
819 static inline struct net_device
*first_net_device(struct net
*net
)
821 return list_empty(&net
->dev_base_head
) ? NULL
:
822 net_device_entry(net
->dev_base_head
.next
);
825 extern int netdev_boot_setup_check(struct net_device
*dev
);
826 extern unsigned long netdev_boot_base(const char *prefix
, int unit
);
827 extern struct net_device
*dev_getbyhwaddr(struct net
*net
, unsigned short type
, char *hwaddr
);
828 extern struct net_device
*dev_getfirstbyhwtype(struct net
*net
, unsigned short type
);
829 extern struct net_device
*__dev_getfirstbyhwtype(struct net
*net
, unsigned short type
);
830 extern void dev_add_pack(struct packet_type
*pt
);
831 extern void dev_remove_pack(struct packet_type
*pt
);
832 extern void __dev_remove_pack(struct packet_type
*pt
);
834 extern struct net_device
*dev_get_by_flags(struct net
*net
, unsigned short flags
,
835 unsigned short mask
);
836 extern struct net_device
*dev_get_by_name(struct net
*net
, const char *name
);
837 extern struct net_device
*__dev_get_by_name(struct net
*net
, const char *name
);
838 extern int dev_alloc_name(struct net_device
*dev
, const char *name
);
839 extern int dev_open(struct net_device
*dev
);
840 extern int dev_close(struct net_device
*dev
);
841 extern int dev_queue_xmit(struct sk_buff
*skb
);
842 extern int register_netdevice(struct net_device
*dev
);
843 extern void unregister_netdevice(struct net_device
*dev
);
844 extern void free_netdev(struct net_device
*dev
);
845 extern void synchronize_net(void);
846 extern int register_netdevice_notifier(struct notifier_block
*nb
);
847 extern int unregister_netdevice_notifier(struct notifier_block
*nb
);
848 extern int call_netdevice_notifiers(unsigned long val
, struct net_device
*dev
);
849 extern struct net_device
*dev_get_by_index(struct net
*net
, int ifindex
);
850 extern struct net_device
*__dev_get_by_index(struct net
*net
, int ifindex
);
851 extern int dev_restart(struct net_device
*dev
);
852 #ifdef CONFIG_NETPOLL_TRAP
853 extern int netpoll_trap(void);
856 static inline int dev_hard_header(struct sk_buff
*skb
, struct net_device
*dev
,
858 const void *daddr
, const void *saddr
,
861 if (!dev
->header_ops
|| !dev
->header_ops
->create
)
864 return dev
->header_ops
->create(skb
, dev
, type
, daddr
, saddr
, len
);
867 static inline int dev_parse_header(const struct sk_buff
*skb
,
868 unsigned char *haddr
)
870 const struct net_device
*dev
= skb
->dev
;
872 if (!dev
->header_ops
|| !dev
->header_ops
->parse
)
874 return dev
->header_ops
->parse(skb
, haddr
);
877 typedef int gifconf_func_t(struct net_device
* dev
, char __user
* bufptr
, int len
);
878 extern int register_gifconf(unsigned int family
, gifconf_func_t
* gifconf
);
879 static inline int unregister_gifconf(unsigned int family
)
881 return register_gifconf(family
, NULL
);
885 * Incoming packets are placed on per-cpu queues so that
886 * no locking is needed.
890 struct net_device
*output_queue
;
891 struct sk_buff_head input_pkt_queue
;
892 struct list_head poll_list
;
893 struct sk_buff
*completion_queue
;
895 struct napi_struct backlog
;
896 #ifdef CONFIG_NET_DMA
897 struct dma_chan
*net_dma
;
901 DECLARE_PER_CPU(struct softnet_data
,softnet_data
);
903 #define HAVE_NETIF_QUEUE
905 extern void __netif_schedule(struct net_device
*dev
);
907 static inline void netif_schedule(struct net_device
*dev
)
909 if (!test_bit(__LINK_STATE_XOFF
, &dev
->state
))
910 __netif_schedule(dev
);
914 * netif_start_queue - allow transmit
915 * @dev: network device
917 * Allow upper layers to call the device hard_start_xmit routine.
919 static inline void netif_start_queue(struct net_device
*dev
)
921 clear_bit(__LINK_STATE_XOFF
, &dev
->state
);
925 * netif_wake_queue - restart transmit
926 * @dev: network device
928 * Allow upper layers to call the device hard_start_xmit routine.
929 * Used for flow control when transmit resources are available.
931 static inline void netif_wake_queue(struct net_device
*dev
)
933 #ifdef CONFIG_NETPOLL_TRAP
934 if (netpoll_trap()) {
935 clear_bit(__LINK_STATE_XOFF
, &dev
->state
);
939 if (test_and_clear_bit(__LINK_STATE_XOFF
, &dev
->state
))
940 __netif_schedule(dev
);
944 * netif_stop_queue - stop transmitted packets
945 * @dev: network device
947 * Stop upper layers calling the device hard_start_xmit routine.
948 * Used for flow control when transmit resources are unavailable.
950 static inline void netif_stop_queue(struct net_device
*dev
)
952 set_bit(__LINK_STATE_XOFF
, &dev
->state
);
956 * netif_queue_stopped - test if transmit queue is flowblocked
957 * @dev: network device
959 * Test if transmit queue on device is currently unable to send.
961 static inline int netif_queue_stopped(const struct net_device
*dev
)
963 return test_bit(__LINK_STATE_XOFF
, &dev
->state
);
967 * netif_running - test if up
968 * @dev: network device
970 * Test if the device has been brought up.
972 static inline int netif_running(const struct net_device
*dev
)
974 return test_bit(__LINK_STATE_START
, &dev
->state
);
978 * Routines to manage the subqueues on a device. We only need start
979 * stop, and a check if it's stopped. All other device management is
980 * done at the overall netdevice level.
981 * Also test the device if we're multiqueue.
985 * netif_start_subqueue - allow sending packets on subqueue
986 * @dev: network device
987 * @queue_index: sub queue index
989 * Start individual transmit queue of a device with multiple transmit queues.
991 static inline void netif_start_subqueue(struct net_device
*dev
, u16 queue_index
)
993 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
994 clear_bit(__LINK_STATE_XOFF
, &dev
->egress_subqueue
[queue_index
].state
);
999 * netif_stop_subqueue - stop sending packets on subqueue
1000 * @dev: network device
1001 * @queue_index: sub queue index
1003 * Stop individual transmit queue of a device with multiple transmit queues.
1005 static inline void netif_stop_subqueue(struct net_device
*dev
, u16 queue_index
)
1007 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1008 #ifdef CONFIG_NETPOLL_TRAP
1012 set_bit(__LINK_STATE_XOFF
, &dev
->egress_subqueue
[queue_index
].state
);
1017 * netif_subqueue_stopped - test status of subqueue
1018 * @dev: network device
1019 * @queue_index: sub queue index
1021 * Check individual transmit queue of a device with multiple transmit queues.
1023 static inline int __netif_subqueue_stopped(const struct net_device
*dev
,
1026 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1027 return test_bit(__LINK_STATE_XOFF
,
1028 &dev
->egress_subqueue
[queue_index
].state
);
1034 static inline int netif_subqueue_stopped(const struct net_device
*dev
,
1035 struct sk_buff
*skb
)
1037 return __netif_subqueue_stopped(dev
, skb_get_queue_mapping(skb
));
1041 * netif_wake_subqueue - allow sending packets on subqueue
1042 * @dev: network device
1043 * @queue_index: sub queue index
1045 * Resume individual transmit queue of a device with multiple transmit queues.
1047 static inline void netif_wake_subqueue(struct net_device
*dev
, u16 queue_index
)
1049 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1050 #ifdef CONFIG_NETPOLL_TRAP
1054 if (test_and_clear_bit(__LINK_STATE_XOFF
,
1055 &dev
->egress_subqueue
[queue_index
].state
))
1056 __netif_schedule(dev
);
1061 * netif_is_multiqueue - test if device has multiple transmit queues
1062 * @dev: network device
1064 * Check if device has multiple transmit queues
1065 * Always falls if NETDEVICE_MULTIQUEUE is not configured
1067 static inline int netif_is_multiqueue(const struct net_device
*dev
)
1069 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1070 return (!!(NETIF_F_MULTI_QUEUE
& dev
->features
));
1076 /* Use this variant when it is known for sure that it
1077 * is executing from hardware interrupt context or with hardware interrupts
1080 extern void dev_kfree_skb_irq(struct sk_buff
*skb
);
1082 /* Use this variant in places where it could be invoked
1083 * from either hardware interrupt or other context, with hardware interrupts
1084 * either disabled or enabled.
1086 extern void dev_kfree_skb_any(struct sk_buff
*skb
);
1088 #define HAVE_NETIF_RX 1
1089 extern int netif_rx(struct sk_buff
*skb
);
1090 extern int netif_rx_ni(struct sk_buff
*skb
);
1091 #define HAVE_NETIF_RECEIVE_SKB 1
1092 extern int netif_receive_skb(struct sk_buff
*skb
);
1093 extern int dev_valid_name(const char *name
);
1094 extern int dev_ioctl(struct net
*net
, unsigned int cmd
, void __user
*);
1095 extern int dev_ethtool(struct net
*net
, struct ifreq
*);
1096 extern unsigned dev_get_flags(const struct net_device
*);
1097 extern int dev_change_flags(struct net_device
*, unsigned);
1098 extern int dev_change_name(struct net_device
*, char *);
1099 extern int dev_change_net_namespace(struct net_device
*,
1100 struct net
*, const char *);
1101 extern int dev_set_mtu(struct net_device
*, int);
1102 extern int dev_set_mac_address(struct net_device
*,
1104 extern int dev_hard_start_xmit(struct sk_buff
*skb
,
1105 struct net_device
*dev
);
1107 extern int netdev_budget
;
1109 /* Called by rtnetlink.c:rtnl_unlock() */
1110 extern void netdev_run_todo(void);
1113 * dev_put - release reference to device
1114 * @dev: network device
1116 * Release reference to device to allow it to be freed.
1118 static inline void dev_put(struct net_device
*dev
)
1120 atomic_dec(&dev
->refcnt
);
1124 * dev_hold - get reference to device
1125 * @dev: network device
1127 * Hold reference to device to keep it from being freed.
1129 static inline void dev_hold(struct net_device
*dev
)
1131 atomic_inc(&dev
->refcnt
);
1134 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
1135 * and _off may be called from IRQ context, but it is caller
1136 * who is responsible for serialization of these calls.
1138 * The name carrier is inappropriate, these functions should really be
1139 * called netif_lowerlayer_*() because they represent the state of any
1140 * kind of lower layer not just hardware media.
1143 extern void linkwatch_fire_event(struct net_device
*dev
);
1146 * netif_carrier_ok - test if carrier present
1147 * @dev: network device
1149 * Check if carrier is present on device
1151 static inline int netif_carrier_ok(const struct net_device
*dev
)
1153 return !test_bit(__LINK_STATE_NOCARRIER
, &dev
->state
);
1156 extern void __netdev_watchdog_up(struct net_device
*dev
);
1158 extern void netif_carrier_on(struct net_device
*dev
);
1160 extern void netif_carrier_off(struct net_device
*dev
);
1163 * netif_dormant_on - mark device as dormant.
1164 * @dev: network device
1166 * Mark device as dormant (as per RFC2863).
1168 * The dormant state indicates that the relevant interface is not
1169 * actually in a condition to pass packets (i.e., it is not 'up') but is
1170 * in a "pending" state, waiting for some external event. For "on-
1171 * demand" interfaces, this new state identifies the situation where the
1172 * interface is waiting for events to place it in the up state.
1175 static inline void netif_dormant_on(struct net_device
*dev
)
1177 if (!test_and_set_bit(__LINK_STATE_DORMANT
, &dev
->state
))
1178 linkwatch_fire_event(dev
);
1182 * netif_dormant_off - set device as not dormant.
1183 * @dev: network device
1185 * Device is not in dormant state.
1187 static inline void netif_dormant_off(struct net_device
*dev
)
1189 if (test_and_clear_bit(__LINK_STATE_DORMANT
, &dev
->state
))
1190 linkwatch_fire_event(dev
);
1194 * netif_dormant - test if carrier present
1195 * @dev: network device
1197 * Check if carrier is present on device
1199 static inline int netif_dormant(const struct net_device
*dev
)
1201 return test_bit(__LINK_STATE_DORMANT
, &dev
->state
);
1206 * netif_oper_up - test if device is operational
1207 * @dev: network device
1209 * Check if carrier is operational
1211 static inline int netif_oper_up(const struct net_device
*dev
) {
1212 return (dev
->operstate
== IF_OPER_UP
||
1213 dev
->operstate
== IF_OPER_UNKNOWN
/* backward compat */);
1217 * netif_device_present - is device available or removed
1218 * @dev: network device
1220 * Check if device has not been removed from system.
1222 static inline int netif_device_present(struct net_device
*dev
)
1224 return test_bit(__LINK_STATE_PRESENT
, &dev
->state
);
1227 extern void netif_device_detach(struct net_device
*dev
);
1229 extern void netif_device_attach(struct net_device
*dev
);
1232 * Network interface message level settings
1234 #define HAVE_NETIF_MSG 1
1237 NETIF_MSG_DRV
= 0x0001,
1238 NETIF_MSG_PROBE
= 0x0002,
1239 NETIF_MSG_LINK
= 0x0004,
1240 NETIF_MSG_TIMER
= 0x0008,
1241 NETIF_MSG_IFDOWN
= 0x0010,
1242 NETIF_MSG_IFUP
= 0x0020,
1243 NETIF_MSG_RX_ERR
= 0x0040,
1244 NETIF_MSG_TX_ERR
= 0x0080,
1245 NETIF_MSG_TX_QUEUED
= 0x0100,
1246 NETIF_MSG_INTR
= 0x0200,
1247 NETIF_MSG_TX_DONE
= 0x0400,
1248 NETIF_MSG_RX_STATUS
= 0x0800,
1249 NETIF_MSG_PKTDATA
= 0x1000,
1250 NETIF_MSG_HW
= 0x2000,
1251 NETIF_MSG_WOL
= 0x4000,
1254 #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
1255 #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
1256 #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
1257 #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
1258 #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
1259 #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
1260 #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
1261 #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
1262 #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
1263 #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
1264 #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
1265 #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
1266 #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
1267 #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
1268 #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
1270 static inline u32
netif_msg_init(int debug_value
, int default_msg_enable_bits
)
1273 if (debug_value
< 0 || debug_value
>= (sizeof(u32
) * 8))
1274 return default_msg_enable_bits
;
1275 if (debug_value
== 0) /* no output */
1277 /* set low N bits */
1278 return (1 << debug_value
) - 1;
1281 /* Test if receive needs to be scheduled but only if up */
1282 static inline int netif_rx_schedule_prep(struct net_device
*dev
,
1283 struct napi_struct
*napi
)
1285 return napi_schedule_prep(napi
);
1288 /* Add interface to tail of rx poll list. This assumes that _prep has
1289 * already been called and returned 1.
1291 static inline void __netif_rx_schedule(struct net_device
*dev
,
1292 struct napi_struct
*napi
)
1294 __napi_schedule(napi
);
1297 /* Try to reschedule poll. Called by irq handler. */
1299 static inline void netif_rx_schedule(struct net_device
*dev
,
1300 struct napi_struct
*napi
)
1302 if (netif_rx_schedule_prep(dev
, napi
))
1303 __netif_rx_schedule(dev
, napi
);
1306 /* Try to reschedule poll. Called by dev->poll() after netif_rx_complete(). */
1307 static inline int netif_rx_reschedule(struct net_device
*dev
,
1308 struct napi_struct
*napi
)
1310 if (napi_schedule_prep(napi
)) {
1311 __netif_rx_schedule(dev
, napi
);
1317 /* same as netif_rx_complete, except that local_irq_save(flags)
1318 * has already been issued
1320 static inline void __netif_rx_complete(struct net_device
*dev
,
1321 struct napi_struct
*napi
)
1323 __napi_complete(napi
);
1326 /* Remove interface from poll list: it must be in the poll list
1327 * on current cpu. This primitive is called by dev->poll(), when
1328 * it completes the work. The device cannot be out of poll list at this
1329 * moment, it is BUG().
1331 static inline void netif_rx_complete(struct net_device
*dev
,
1332 struct napi_struct
*napi
)
1334 unsigned long flags
;
1336 local_irq_save(flags
);
1337 __netif_rx_complete(dev
, napi
);
1338 local_irq_restore(flags
);
1342 * netif_tx_lock - grab network device transmit lock
1343 * @dev: network device
1344 * @cpu: cpu number of lock owner
1346 * Get network device transmit lock
1348 static inline void __netif_tx_lock(struct net_device
*dev
, int cpu
)
1350 spin_lock(&dev
->_xmit_lock
);
1351 dev
->xmit_lock_owner
= cpu
;
1354 static inline void netif_tx_lock(struct net_device
*dev
)
1356 __netif_tx_lock(dev
, smp_processor_id());
1359 static inline void netif_tx_lock_bh(struct net_device
*dev
)
1361 spin_lock_bh(&dev
->_xmit_lock
);
1362 dev
->xmit_lock_owner
= smp_processor_id();
1365 static inline int netif_tx_trylock(struct net_device
*dev
)
1367 int ok
= spin_trylock(&dev
->_xmit_lock
);
1369 dev
->xmit_lock_owner
= smp_processor_id();
1373 static inline void netif_tx_unlock(struct net_device
*dev
)
1375 dev
->xmit_lock_owner
= -1;
1376 spin_unlock(&dev
->_xmit_lock
);
1379 static inline void netif_tx_unlock_bh(struct net_device
*dev
)
1381 dev
->xmit_lock_owner
= -1;
1382 spin_unlock_bh(&dev
->_xmit_lock
);
1385 #define HARD_TX_LOCK(dev, cpu) { \
1386 if ((dev->features & NETIF_F_LLTX) == 0) { \
1387 __netif_tx_lock(dev, cpu); \
1391 #define HARD_TX_UNLOCK(dev) { \
1392 if ((dev->features & NETIF_F_LLTX) == 0) { \
1393 netif_tx_unlock(dev); \
1397 static inline void netif_tx_disable(struct net_device
*dev
)
1399 netif_tx_lock_bh(dev
);
1400 netif_stop_queue(dev
);
1401 netif_tx_unlock_bh(dev
);
1404 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
1406 extern void ether_setup(struct net_device
*dev
);
1408 /* Support for loadable net-drivers */
1409 extern struct net_device
*alloc_netdev_mq(int sizeof_priv
, const char *name
,
1410 void (*setup
)(struct net_device
*),
1411 unsigned int queue_count
);
1412 #define alloc_netdev(sizeof_priv, name, setup) \
1413 alloc_netdev_mq(sizeof_priv, name, setup, 1)
1414 extern int register_netdev(struct net_device
*dev
);
1415 extern void unregister_netdev(struct net_device
*dev
);
1416 /* Functions used for secondary unicast and multicast support */
1417 extern void dev_set_rx_mode(struct net_device
*dev
);
1418 extern void __dev_set_rx_mode(struct net_device
*dev
);
1419 extern int dev_unicast_delete(struct net_device
*dev
, void *addr
, int alen
);
1420 extern int dev_unicast_add(struct net_device
*dev
, void *addr
, int alen
);
1421 extern int dev_unicast_sync(struct net_device
*to
, struct net_device
*from
);
1422 extern void dev_unicast_unsync(struct net_device
*to
, struct net_device
*from
);
1423 extern int dev_mc_delete(struct net_device
*dev
, void *addr
, int alen
, int all
);
1424 extern int dev_mc_add(struct net_device
*dev
, void *addr
, int alen
, int newonly
);
1425 extern int dev_mc_sync(struct net_device
*to
, struct net_device
*from
);
1426 extern void dev_mc_unsync(struct net_device
*to
, struct net_device
*from
);
1427 extern int __dev_addr_delete(struct dev_addr_list
**list
, int *count
, void *addr
, int alen
, int all
);
1428 extern int __dev_addr_add(struct dev_addr_list
**list
, int *count
, void *addr
, int alen
, int newonly
);
1429 extern int __dev_addr_sync(struct dev_addr_list
**to
, int *to_count
, struct dev_addr_list
**from
, int *from_count
);
1430 extern void __dev_addr_unsync(struct dev_addr_list
**to
, int *to_count
, struct dev_addr_list
**from
, int *from_count
);
1431 extern void dev_set_promiscuity(struct net_device
*dev
, int inc
);
1432 extern void dev_set_allmulti(struct net_device
*dev
, int inc
);
1433 extern void netdev_state_change(struct net_device
*dev
);
1434 extern void netdev_features_change(struct net_device
*dev
);
1435 /* Load a device via the kmod */
1436 extern void dev_load(struct net
*net
, const char *name
);
1437 extern void dev_mcast_init(void);
1438 extern int netdev_max_backlog
;
1439 extern int weight_p
;
1440 extern int netdev_set_master(struct net_device
*dev
, struct net_device
*master
);
1441 extern int skb_checksum_help(struct sk_buff
*skb
);
1442 extern struct sk_buff
*skb_gso_segment(struct sk_buff
*skb
, int features
);
1444 extern void netdev_rx_csum_fault(struct net_device
*dev
);
1446 static inline void netdev_rx_csum_fault(struct net_device
*dev
)
1450 /* rx skb timestamps */
1451 extern void net_enable_timestamp(void);
1452 extern void net_disable_timestamp(void);
1454 #ifdef CONFIG_PROC_FS
1455 extern void *dev_seq_start(struct seq_file
*seq
, loff_t
*pos
);
1456 extern void *dev_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
);
1457 extern void dev_seq_stop(struct seq_file
*seq
, void *v
);
1460 extern void linkwatch_run_queue(void);
1462 extern int netdev_compute_features(unsigned long all
, unsigned long one
);
1464 static inline int net_gso_ok(int features
, int gso_type
)
1466 int feature
= gso_type
<< NETIF_F_GSO_SHIFT
;
1467 return (features
& feature
) == feature
;
1470 static inline int skb_gso_ok(struct sk_buff
*skb
, int features
)
1472 return net_gso_ok(features
, skb_shinfo(skb
)->gso_type
);
1475 static inline int netif_needs_gso(struct net_device
*dev
, struct sk_buff
*skb
)
1477 return skb_is_gso(skb
) &&
1478 (!skb_gso_ok(skb
, dev
->features
) ||
1479 unlikely(skb
->ip_summed
!= CHECKSUM_PARTIAL
));
1482 /* On bonding slaves other than the currently active slave, suppress
1483 * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and
1484 * ARP on active-backup slaves with arp_validate enabled.
1486 static inline int skb_bond_should_drop(struct sk_buff
*skb
)
1488 struct net_device
*dev
= skb
->dev
;
1489 struct net_device
*master
= dev
->master
;
1492 (dev
->priv_flags
& IFF_SLAVE_INACTIVE
)) {
1493 if ((dev
->priv_flags
& IFF_SLAVE_NEEDARP
) &&
1494 skb
->protocol
== __constant_htons(ETH_P_ARP
))
1497 if (master
->priv_flags
& IFF_MASTER_ALB
) {
1498 if (skb
->pkt_type
!= PACKET_BROADCAST
&&
1499 skb
->pkt_type
!= PACKET_MULTICAST
)
1502 if (master
->priv_flags
& IFF_MASTER_8023AD
&&
1503 skb
->protocol
== __constant_htons(ETH_P_SLOW
))
1511 #endif /* __KERNEL__ */
1513 #endif /* _LINUX_DEV_H */