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_WLAN_80211) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
97 # if defined(CONFIG_MAC80211_MESH)
98 # define LL_MAX_HEADER 128
100 # define LL_MAX_HEADER 96
102 #elif defined(CONFIG_TR)
103 # define LL_MAX_HEADER 48
105 # define LL_MAX_HEADER 32
108 #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
109 !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \
110 !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
111 !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
112 #define MAX_HEADER LL_MAX_HEADER
114 #define MAX_HEADER (LL_MAX_HEADER + 48)
117 struct net_device_subqueue
119 /* Give a control state for each queue. This struct may contain
120 * per-queue locks in the future.
126 * Network device statistics. Akin to the 2.0 ether stats but
127 * with byte counters.
130 struct net_device_stats
132 unsigned long rx_packets; /* total packets received */
133 unsigned long tx_packets; /* total packets transmitted */
134 unsigned long rx_bytes; /* total bytes received */
135 unsigned long tx_bytes; /* total bytes transmitted */
136 unsigned long rx_errors; /* bad packets received */
137 unsigned long tx_errors; /* packet transmit problems */
138 unsigned long rx_dropped; /* no space in linux buffers */
139 unsigned long tx_dropped; /* no space available in linux */
140 unsigned long multicast; /* multicast packets received */
141 unsigned long collisions;
143 /* detailed rx_errors: */
144 unsigned long rx_length_errors;
145 unsigned long rx_over_errors; /* receiver ring buff overflow */
146 unsigned long rx_crc_errors; /* recved pkt with crc error */
147 unsigned long rx_frame_errors; /* recv'd frame alignment error */
148 unsigned long rx_fifo_errors; /* recv'r fifo overrun */
149 unsigned long rx_missed_errors; /* receiver missed packet */
151 /* detailed tx_errors */
152 unsigned long tx_aborted_errors;
153 unsigned long tx_carrier_errors;
154 unsigned long tx_fifo_errors;
155 unsigned long tx_heartbeat_errors;
156 unsigned long tx_window_errors;
159 unsigned long rx_compressed;
160 unsigned long tx_compressed;
164 /* Media selection options. */
177 #include <linux/cache.h>
178 #include <linux/skbuff.h>
184 struct netif_rx_stats
188 unsigned time_squeeze;
189 unsigned cpu_collision;
192 DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat);
196 struct dev_addr_list *next;
197 u8 da_addr[MAX_ADDR_LEN];
205 * We tag multicasts with these structures.
208 #define dev_mc_list dev_addr_list
209 #define dmi_addr da_addr
210 #define dmi_addrlen da_addrlen
211 #define dmi_users da_users
212 #define dmi_gusers da_gusers
216 struct hh_cache *hh_next; /* Next entry */
217 atomic_t hh_refcnt; /* number of users */
219 * We want hh_output, hh_len, hh_lock and hh_data be a in a separate
221 * They are mostly read, but hh_refcnt may be changed quite frequently,
222 * incurring cache line ping pongs.
224 __be16 hh_type ____cacheline_aligned_in_smp;
225 /* protocol identifier, f.e ETH_P_IP
226 * NOTE: For VLANs, this will be the
227 * encapuslated type. --BLG
229 u16 hh_len; /* length of header */
230 int (*hh_output)(struct sk_buff *skb);
233 /* cached hardware header; allow for machine alignment needs. */
234 #define HH_DATA_MOD 16
235 #define HH_DATA_OFF(__len) \
236 (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
237 #define HH_DATA_ALIGN(__len) \
238 (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
239 unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)];
242 /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
244 * dev->hard_header_len ? (dev->hard_header_len +
245 * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
247 * We could use other alignment values, but we must maintain the
248 * relationship HH alignment <= LL alignment.
250 * LL_ALLOCATED_SPACE also takes into account the tailroom the device
253 #define LL_RESERVED_SPACE(dev) \
254 ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
255 #define LL_RESERVED_SPACE_EXTRA(dev,extra) \
256 ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
257 #define LL_ALLOCATED_SPACE(dev) \
258 ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
261 int (*create) (struct sk_buff *skb, struct net_device *dev,
262 unsigned short type, const void *daddr,
263 const void *saddr, unsigned len);
264 int (*parse)(const struct sk_buff *skb, unsigned char *haddr);
265 int (*rebuild)(struct sk_buff *skb);
266 #define HAVE_HEADER_CACHE
267 int (*cache)(const struct neighbour *neigh, struct hh_cache *hh);
268 void (*cache_update)(struct hh_cache *hh,
269 const struct net_device *dev,
270 const unsigned char *haddr);
273 /* These flag bits are private to the generic network queueing
274 * layer, they may not be explicitly referenced by any other
282 __LINK_STATE_PRESENT,
284 __LINK_STATE_NOCARRIER,
285 __LINK_STATE_LINKWATCH_PENDING,
286 __LINK_STATE_DORMANT,
287 __LINK_STATE_QDISC_RUNNING,
292 * This structure holds at boot time configured netdevice settings. They
293 * are then used in the device probing.
295 struct netdev_boot_setup {
299 #define NETDEV_BOOT_SETUP_MAX 8
301 extern int __init netdev_boot_setup(char *str);
304 * Structure for NAPI scheduling similar to tasklet but with weighting
307 /* The poll_list must only be managed by the entity which
308 * changes the state of the NAPI_STATE_SCHED bit. This means
309 * whoever atomically sets that bit can add this napi_struct
310 * to the per-cpu poll_list, and whoever clears that bit
311 * can remove from the list right before clearing the bit.
313 struct list_head poll_list;
317 int (*poll)(struct napi_struct *, int);
318 #ifdef CONFIG_NETPOLL
319 spinlock_t poll_lock;
321 struct net_device *dev;
322 struct list_head dev_list;
328 NAPI_STATE_SCHED, /* Poll is scheduled */
329 NAPI_STATE_DISABLE, /* Disable pending */
332 extern void __napi_schedule(struct napi_struct *n);
334 static inline int napi_disable_pending(struct napi_struct *n)
336 return test_bit(NAPI_STATE_DISABLE, &n->state);
340 * napi_schedule_prep - check if napi can be scheduled
343 * Test if NAPI routine is already running, and if not mark
344 * it as running. This is used as a condition variable
345 * insure only one NAPI poll instance runs. We also make
346 * sure there is no pending NAPI disable.
348 static inline int napi_schedule_prep(struct napi_struct *n)
350 return !napi_disable_pending(n) &&
351 !test_and_set_bit(NAPI_STATE_SCHED, &n->state);
355 * napi_schedule - schedule NAPI poll
358 * Schedule NAPI poll routine to be called if it is not already
361 static inline void napi_schedule(struct napi_struct *n)
363 if (napi_schedule_prep(n))
367 /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */
368 static inline int napi_reschedule(struct napi_struct *napi)
370 if (napi_schedule_prep(napi)) {
371 __napi_schedule(napi);
378 * napi_complete - NAPI processing complete
381 * Mark NAPI processing as complete.
383 static inline void __napi_complete(struct napi_struct *n)
385 BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));
386 list_del(&n->poll_list);
387 smp_mb__before_clear_bit();
388 clear_bit(NAPI_STATE_SCHED, &n->state);
391 static inline void napi_complete(struct napi_struct *n)
395 local_irq_save(flags);
397 local_irq_restore(flags);
401 * napi_disable - prevent NAPI from scheduling
404 * Stop NAPI from being scheduled on this context.
405 * Waits till any outstanding processing completes.
407 static inline void napi_disable(struct napi_struct *n)
409 set_bit(NAPI_STATE_DISABLE, &n->state);
410 while (test_and_set_bit(NAPI_STATE_SCHED, &n->state))
412 clear_bit(NAPI_STATE_DISABLE, &n->state);
416 * napi_enable - enable NAPI scheduling
419 * Resume NAPI from being scheduled on this context.
420 * Must be paired with napi_disable.
422 static inline void napi_enable(struct napi_struct *n)
424 BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));
425 smp_mb__before_clear_bit();
426 clear_bit(NAPI_STATE_SCHED, &n->state);
431 * napi_synchronize - wait until NAPI is not running
434 * Wait until NAPI is done being scheduled on this context.
435 * Waits till any outstanding processing completes but
436 * does not disable future activations.
438 static inline void napi_synchronize(const struct napi_struct *n)
440 while (test_bit(NAPI_STATE_SCHED, &n->state))
444 # define napi_synchronize(n) barrier()
448 * The DEVICE structure.
449 * Actually, this whole structure is a big mistake. It mixes I/O
450 * data with strictly "high-level" data, and it has to know about
451 * almost every data structure used in the INET module.
453 * FIXME: cleanup struct net_device such that network protocol info
461 * This is the first field of the "visible" part of this structure
462 * (i.e. as seen by users in the "Space.c" file). It is the name
466 /* device name hash chain */
467 struct hlist_node name_hlist;
470 * I/O specific fields
471 * FIXME: Merge these and struct ifmap into one
473 unsigned long mem_end; /* shared mem end */
474 unsigned long mem_start; /* shared mem start */
475 unsigned long base_addr; /* device I/O address */
476 unsigned int irq; /* device IRQ number */
479 * Some hardware also needs these fields, but they are not
480 * part of the usual set specified in Space.c.
483 unsigned char if_port; /* Selectable AUI, TP,..*/
484 unsigned char dma; /* DMA channel */
488 struct list_head dev_list;
489 #ifdef CONFIG_NETPOLL
490 struct list_head napi_list;
493 /* The device initialization function. Called only once. */
494 int (*init)(struct net_device *dev);
496 /* ------- Fields preinitialized in Space.c finish here ------- */
498 /* Net device features */
499 unsigned long features;
500 #define NETIF_F_SG 1 /* Scatter/gather IO. */
501 #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
502 #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
503 #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
504 #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
505 #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
506 #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
507 #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
508 #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
509 #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
510 #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
511 #define NETIF_F_GSO 2048 /* Enable software GSO. */
512 #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
513 /* do not use LLTX in new drivers */
514 #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
515 #define NETIF_F_MULTI_QUEUE 16384 /* Has multiple TX/RX queues */
516 #define NETIF_F_LRO 32768 /* large receive offload */
518 /* Segmentation offload features */
519 #define NETIF_F_GSO_SHIFT 16
520 #define NETIF_F_GSO_MASK 0xffff0000
521 #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
522 #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
523 #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
524 #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
525 #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
527 /* List of features with software fallbacks. */
528 #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
531 #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
532 #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
533 #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
534 #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
536 struct net_device *next_sched;
538 /* Interface index. Unique device identifier */
543 struct net_device_stats* (*get_stats)(struct net_device *dev);
544 struct net_device_stats stats;
546 #ifdef CONFIG_WIRELESS_EXT
547 /* List of functions to handle Wireless Extensions (instead of ioctl).
548 * See <net/iw_handler.h> for details. Jean II */
549 const struct iw_handler_def * wireless_handlers;
550 /* Instance data managed by the core of Wireless Extensions. */
551 struct iw_public_data * wireless_data;
553 const struct ethtool_ops *ethtool_ops;
555 /* Hardware header description */
556 const struct header_ops *header_ops;
559 * This marks the end of the "visible" part of the structure. All
560 * fields hereafter are internal to the system, and may change at
561 * will (read: may be cleaned up at will).
565 unsigned int flags; /* interface flags (a la BSD) */
566 unsigned short gflags;
567 unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */
568 unsigned short padded; /* How much padding added by alloc_netdev() */
570 unsigned char operstate; /* RFC2863 operstate */
571 unsigned char link_mode; /* mapping policy to operstate */
573 unsigned mtu; /* interface MTU value */
574 unsigned short type; /* interface hardware type */
575 unsigned short hard_header_len; /* hardware hdr length */
577 /* extra head- and tailroom the hardware may need, but not in all cases
578 * can this be guaranteed, especially tailroom. Some cases also use
579 * LL_MAX_HEADER instead to allocate the skb.
581 unsigned short needed_headroom;
582 unsigned short needed_tailroom;
584 struct net_device *master; /* Pointer to master device of a group,
585 * which this device is member of.
588 /* Interface address info. */
589 unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */
590 unsigned char addr_len; /* hardware address length */
591 unsigned short dev_id; /* for shared network cards */
593 struct dev_addr_list *uc_list; /* Secondary unicast mac addresses */
594 int uc_count; /* Number of installed ucasts */
596 struct dev_addr_list *mc_list; /* Multicast mac addresses */
597 int mc_count; /* Number of installed mcasts */
602 /* Protocol specific pointers */
604 void *atalk_ptr; /* AppleTalk link */
605 void *ip_ptr; /* IPv4 specific data */
606 void *dn_ptr; /* DECnet specific data */
607 void *ip6_ptr; /* IPv6 specific data */
608 void *ec_ptr; /* Econet specific data */
609 void *ax25_ptr; /* AX.25 specific data */
610 struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data,
611 assign before registering */
614 * Cache line mostly used on receive path (including eth_type_trans())
616 unsigned long last_rx; /* Time of last Rx */
617 /* Interface address info used in eth_type_trans() */
618 unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast
619 because most packets are unicast) */
621 unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
623 /* ingress path synchronizer */
624 spinlock_t ingress_lock;
625 struct Qdisc *qdisc_ingress;
628 * Cache line mostly used on queue transmit path (qdisc)
630 /* device queue lock */
631 spinlock_t queue_lock ____cacheline_aligned_in_smp;
633 struct Qdisc *qdisc_sleeping;
634 struct list_head qdisc_list;
635 unsigned long tx_queue_len; /* Max frames per queue allowed */
637 /* Partially transmitted GSO packet. */
638 struct sk_buff *gso_skb;
641 * One part is mostly used on xmit path (device)
643 /* hard_start_xmit synchronizer */
644 spinlock_t _xmit_lock ____cacheline_aligned_in_smp;
645 /* cpu id of processor entered to hard_start_xmit or -1,
646 if nobody entered there.
649 void *priv; /* pointer to private data */
650 int (*hard_start_xmit) (struct sk_buff *skb,
651 struct net_device *dev);
652 /* These may be needed for future network-power-down code. */
653 unsigned long trans_start; /* Time (in jiffies) of last Tx */
655 int watchdog_timeo; /* used by dev_watchdog() */
656 struct timer_list watchdog_timer;
659 * refcnt is a very hot point, so align it on SMP
661 /* Number of references to this device */
662 atomic_t refcnt ____cacheline_aligned_in_smp;
664 /* delayed register/unregister */
665 struct list_head todo_list;
666 /* device index hash chain */
667 struct hlist_node index_hlist;
669 struct net_device *link_watch_next;
671 /* register/unregister state machine */
672 enum { NETREG_UNINITIALIZED=0,
673 NETREG_REGISTERED, /* completed register_netdevice */
674 NETREG_UNREGISTERING, /* called unregister_netdevice */
675 NETREG_UNREGISTERED, /* completed unregister todo */
676 NETREG_RELEASED, /* called free_netdev */
679 /* Called after device is detached from network. */
680 void (*uninit)(struct net_device *dev);
681 /* Called after last user reference disappears. */
682 void (*destructor)(struct net_device *dev);
684 /* Pointers to interface service routines. */
685 int (*open)(struct net_device *dev);
686 int (*stop)(struct net_device *dev);
687 #define HAVE_NETDEV_POLL
688 #define HAVE_CHANGE_RX_FLAGS
689 void (*change_rx_flags)(struct net_device *dev,
691 #define HAVE_SET_RX_MODE
692 void (*set_rx_mode)(struct net_device *dev);
693 #define HAVE_MULTICAST
694 void (*set_multicast_list)(struct net_device *dev);
695 #define HAVE_SET_MAC_ADDR
696 int (*set_mac_address)(struct net_device *dev,
698 #define HAVE_VALIDATE_ADDR
699 int (*validate_addr)(struct net_device *dev);
700 #define HAVE_PRIVATE_IOCTL
701 int (*do_ioctl)(struct net_device *dev,
702 struct ifreq *ifr, int cmd);
703 #define HAVE_SET_CONFIG
704 int (*set_config)(struct net_device *dev,
706 #define HAVE_CHANGE_MTU
707 int (*change_mtu)(struct net_device *dev, int new_mtu);
709 #define HAVE_TX_TIMEOUT
710 void (*tx_timeout) (struct net_device *dev);
712 void (*vlan_rx_register)(struct net_device *dev,
713 struct vlan_group *grp);
714 void (*vlan_rx_add_vid)(struct net_device *dev,
716 void (*vlan_rx_kill_vid)(struct net_device *dev,
719 int (*neigh_setup)(struct net_device *dev, struct neigh_parms *);
720 #ifdef CONFIG_NETPOLL
721 struct netpoll_info *npinfo;
723 #ifdef CONFIG_NET_POLL_CONTROLLER
724 void (*poll_controller)(struct net_device *dev);
728 /* Network namespace this network device is inside */
732 /* mid-layer private */
736 struct net_bridge_port *br_port;
738 struct macvlan_port *macvlan_port;
740 /* class/net/name entry */
742 /* space for optional statistics and wireless sysfs groups */
743 struct attribute_group *sysfs_groups[3];
745 /* rtnetlink link ops */
746 const struct rtnl_link_ops *rtnl_link_ops;
748 /* VLAN feature mask */
749 unsigned long vlan_features;
751 /* for setting kernel sock attribute on TCP connection setup */
752 #define GSO_MAX_SIZE 65536
753 unsigned int gso_max_size;
755 /* The TX queue control structures */
756 unsigned int egress_subqueue_count;
757 struct net_device_subqueue egress_subqueue[1];
759 #define to_net_dev(d) container_of(d, struct net_device, dev)
761 #define NETDEV_ALIGN 32
762 #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1)
765 * Net namespace inlines
768 struct net *dev_net(const struct net_device *dev)
778 void dev_net_set(struct net_device *dev, struct net *net)
781 release_net(dev->nd_net);
782 dev->nd_net = hold_net(net);
787 * netdev_priv - access network device private data
788 * @dev: network device
790 * Get network device private data
792 static inline void *netdev_priv(const struct net_device *dev)
797 /* Set the sysfs physical device reference for the network logical device
798 * if set prior to registration will cause a symlink during initialization.
800 #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
803 * netif_napi_add - initialize a napi context
804 * @dev: network device
805 * @napi: napi context
806 * @poll: polling function
807 * @weight: default weight
809 * netif_napi_add() must be used to initialize a napi context prior to calling
810 * *any* of the other napi related functions.
812 static inline void netif_napi_add(struct net_device *dev,
813 struct napi_struct *napi,
814 int (*poll)(struct napi_struct *, int),
817 INIT_LIST_HEAD(&napi->poll_list);
819 napi->weight = weight;
820 #ifdef CONFIG_NETPOLL
822 list_add(&napi->dev_list, &dev->napi_list);
823 spin_lock_init(&napi->poll_lock);
824 napi->poll_owner = -1;
826 set_bit(NAPI_STATE_SCHED, &napi->state);
830 __be16 type; /* This is really htons(ether_type). */
831 struct net_device *dev; /* NULL is wildcarded here */
832 int (*func) (struct sk_buff *,
834 struct packet_type *,
835 struct net_device *);
836 struct sk_buff *(*gso_segment)(struct sk_buff *skb,
838 int (*gso_send_check)(struct sk_buff *skb);
839 void *af_packet_priv;
840 struct list_head list;
843 #include <linux/interrupt.h>
844 #include <linux/notifier.h>
846 extern rwlock_t dev_base_lock; /* Device list lock */
849 #define for_each_netdev(net, d) \
850 list_for_each_entry(d, &(net)->dev_base_head, dev_list)
851 #define for_each_netdev_safe(net, d, n) \
852 list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
853 #define for_each_netdev_continue(net, d) \
854 list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
855 #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
857 static inline struct net_device *next_net_device(struct net_device *dev)
859 struct list_head *lh;
863 lh = dev->dev_list.next;
864 return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
867 static inline struct net_device *first_net_device(struct net *net)
869 return list_empty(&net->dev_base_head) ? NULL :
870 net_device_entry(net->dev_base_head.next);
873 extern int netdev_boot_setup_check(struct net_device *dev);
874 extern unsigned long netdev_boot_base(const char *prefix, int unit);
875 extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr);
876 extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type);
877 extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type);
878 extern void dev_add_pack(struct packet_type *pt);
879 extern void dev_remove_pack(struct packet_type *pt);
880 extern void __dev_remove_pack(struct packet_type *pt);
882 extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags,
883 unsigned short mask);
884 extern struct net_device *dev_get_by_name(struct net *net, const char *name);
885 extern struct net_device *__dev_get_by_name(struct net *net, const char *name);
886 extern int dev_alloc_name(struct net_device *dev, const char *name);
887 extern int dev_open(struct net_device *dev);
888 extern int dev_close(struct net_device *dev);
889 extern int dev_queue_xmit(struct sk_buff *skb);
890 extern int register_netdevice(struct net_device *dev);
891 extern void unregister_netdevice(struct net_device *dev);
892 extern void free_netdev(struct net_device *dev);
893 extern void synchronize_net(void);
894 extern int register_netdevice_notifier(struct notifier_block *nb);
895 extern int unregister_netdevice_notifier(struct notifier_block *nb);
896 extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev);
897 extern struct net_device *dev_get_by_index(struct net *net, int ifindex);
898 extern struct net_device *__dev_get_by_index(struct net *net, int ifindex);
899 extern int dev_restart(struct net_device *dev);
900 #ifdef CONFIG_NETPOLL_TRAP
901 extern int netpoll_trap(void);
904 static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
906 const void *daddr, const void *saddr,
909 if (!dev->header_ops || !dev->header_ops->create)
912 return dev->header_ops->create(skb, dev, type, daddr, saddr, len);
915 static inline int dev_parse_header(const struct sk_buff *skb,
916 unsigned char *haddr)
918 const struct net_device *dev = skb->dev;
920 if (!dev->header_ops || !dev->header_ops->parse)
922 return dev->header_ops->parse(skb, haddr);
925 typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
926 extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf);
927 static inline int unregister_gifconf(unsigned int family)
929 return register_gifconf(family, NULL);
933 * Incoming packets are placed on per-cpu queues so that
934 * no locking is needed.
938 struct net_device *output_queue;
939 struct sk_buff_head input_pkt_queue;
940 struct list_head poll_list;
941 struct sk_buff *completion_queue;
943 struct napi_struct backlog;
944 #ifdef CONFIG_NET_DMA
945 struct dma_chan *net_dma;
949 DECLARE_PER_CPU(struct softnet_data,softnet_data);
951 #define HAVE_NETIF_QUEUE
953 extern void __netif_schedule(struct net_device *dev);
955 static inline void netif_schedule(struct net_device *dev)
957 if (!test_bit(__LINK_STATE_XOFF, &dev->state))
958 __netif_schedule(dev);
962 * netif_start_queue - allow transmit
963 * @dev: network device
965 * Allow upper layers to call the device hard_start_xmit routine.
967 static inline void netif_start_queue(struct net_device *dev)
969 clear_bit(__LINK_STATE_XOFF, &dev->state);
973 * netif_wake_queue - restart transmit
974 * @dev: network device
976 * Allow upper layers to call the device hard_start_xmit routine.
977 * Used for flow control when transmit resources are available.
979 static inline void netif_wake_queue(struct net_device *dev)
981 #ifdef CONFIG_NETPOLL_TRAP
982 if (netpoll_trap()) {
983 clear_bit(__LINK_STATE_XOFF, &dev->state);
987 if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state))
988 __netif_schedule(dev);
992 * netif_stop_queue - stop transmitted packets
993 * @dev: network device
995 * Stop upper layers calling the device hard_start_xmit routine.
996 * Used for flow control when transmit resources are unavailable.
998 static inline void netif_stop_queue(struct net_device *dev)
1000 set_bit(__LINK_STATE_XOFF, &dev->state);
1004 * netif_queue_stopped - test if transmit queue is flowblocked
1005 * @dev: network device
1007 * Test if transmit queue on device is currently unable to send.
1009 static inline int netif_queue_stopped(const struct net_device *dev)
1011 return test_bit(__LINK_STATE_XOFF, &dev->state);
1015 * netif_running - test if up
1016 * @dev: network device
1018 * Test if the device has been brought up.
1020 static inline int netif_running(const struct net_device *dev)
1022 return test_bit(__LINK_STATE_START, &dev->state);
1026 * Routines to manage the subqueues on a device. We only need start
1027 * stop, and a check if it's stopped. All other device management is
1028 * done at the overall netdevice level.
1029 * Also test the device if we're multiqueue.
1033 * netif_start_subqueue - allow sending packets on subqueue
1034 * @dev: network device
1035 * @queue_index: sub queue index
1037 * Start individual transmit queue of a device with multiple transmit queues.
1039 static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
1041 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1042 clear_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
1047 * netif_stop_subqueue - stop sending packets on subqueue
1048 * @dev: network device
1049 * @queue_index: sub queue index
1051 * Stop individual transmit queue of a device with multiple transmit queues.
1053 static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
1055 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1056 #ifdef CONFIG_NETPOLL_TRAP
1060 set_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
1065 * netif_subqueue_stopped - test status of subqueue
1066 * @dev: network device
1067 * @queue_index: sub queue index
1069 * Check individual transmit queue of a device with multiple transmit queues.
1071 static inline int __netif_subqueue_stopped(const struct net_device *dev,
1074 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1075 return test_bit(__LINK_STATE_XOFF,
1076 &dev->egress_subqueue[queue_index].state);
1082 static inline int netif_subqueue_stopped(const struct net_device *dev,
1083 struct sk_buff *skb)
1085 return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb));
1089 * netif_wake_subqueue - allow sending packets on subqueue
1090 * @dev: network device
1091 * @queue_index: sub queue index
1093 * Resume individual transmit queue of a device with multiple transmit queues.
1095 static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
1097 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1098 #ifdef CONFIG_NETPOLL_TRAP
1102 if (test_and_clear_bit(__LINK_STATE_XOFF,
1103 &dev->egress_subqueue[queue_index].state))
1104 __netif_schedule(dev);
1109 * netif_is_multiqueue - test if device has multiple transmit queues
1110 * @dev: network device
1112 * Check if device has multiple transmit queues
1113 * Always falls if NETDEVICE_MULTIQUEUE is not configured
1115 static inline int netif_is_multiqueue(const struct net_device *dev)
1117 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1118 return (!!(NETIF_F_MULTI_QUEUE & dev->features));
1124 /* Use this variant when it is known for sure that it
1125 * is executing from hardware interrupt context or with hardware interrupts
1128 extern void dev_kfree_skb_irq(struct sk_buff *skb);
1130 /* Use this variant in places where it could be invoked
1131 * from either hardware interrupt or other context, with hardware interrupts
1132 * either disabled or enabled.
1134 extern void dev_kfree_skb_any(struct sk_buff *skb);
1136 #define HAVE_NETIF_RX 1
1137 extern int netif_rx(struct sk_buff *skb);
1138 extern int netif_rx_ni(struct sk_buff *skb);
1139 #define HAVE_NETIF_RECEIVE_SKB 1
1140 extern int netif_receive_skb(struct sk_buff *skb);
1141 extern int dev_valid_name(const char *name);
1142 extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *);
1143 extern int dev_ethtool(struct net *net, struct ifreq *);
1144 extern unsigned dev_get_flags(const struct net_device *);
1145 extern int dev_change_flags(struct net_device *, unsigned);
1146 extern int dev_change_name(struct net_device *, char *);
1147 extern int dev_change_net_namespace(struct net_device *,
1148 struct net *, const char *);
1149 extern int dev_set_mtu(struct net_device *, int);
1150 extern int dev_set_mac_address(struct net_device *,
1152 extern int dev_hard_start_xmit(struct sk_buff *skb,
1153 struct net_device *dev);
1155 extern int netdev_budget;
1157 /* Called by rtnetlink.c:rtnl_unlock() */
1158 extern void netdev_run_todo(void);
1161 * dev_put - release reference to device
1162 * @dev: network device
1164 * Release reference to device to allow it to be freed.
1166 static inline void dev_put(struct net_device *dev)
1168 atomic_dec(&dev->refcnt);
1172 * dev_hold - get reference to device
1173 * @dev: network device
1175 * Hold reference to device to keep it from being freed.
1177 static inline void dev_hold(struct net_device *dev)
1179 atomic_inc(&dev->refcnt);
1182 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
1183 * and _off may be called from IRQ context, but it is caller
1184 * who is responsible for serialization of these calls.
1186 * The name carrier is inappropriate, these functions should really be
1187 * called netif_lowerlayer_*() because they represent the state of any
1188 * kind of lower layer not just hardware media.
1191 extern void linkwatch_fire_event(struct net_device *dev);
1194 * netif_carrier_ok - test if carrier present
1195 * @dev: network device
1197 * Check if carrier is present on device
1199 static inline int netif_carrier_ok(const struct net_device *dev)
1201 return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
1204 extern void __netdev_watchdog_up(struct net_device *dev);
1206 extern void netif_carrier_on(struct net_device *dev);
1208 extern void netif_carrier_off(struct net_device *dev);
1211 * netif_dormant_on - mark device as dormant.
1212 * @dev: network device
1214 * Mark device as dormant (as per RFC2863).
1216 * The dormant state indicates that the relevant interface is not
1217 * actually in a condition to pass packets (i.e., it is not 'up') but is
1218 * in a "pending" state, waiting for some external event. For "on-
1219 * demand" interfaces, this new state identifies the situation where the
1220 * interface is waiting for events to place it in the up state.
1223 static inline void netif_dormant_on(struct net_device *dev)
1225 if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state))
1226 linkwatch_fire_event(dev);
1230 * netif_dormant_off - set device as not dormant.
1231 * @dev: network device
1233 * Device is not in dormant state.
1235 static inline void netif_dormant_off(struct net_device *dev)
1237 if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state))
1238 linkwatch_fire_event(dev);
1242 * netif_dormant - test if carrier present
1243 * @dev: network device
1245 * Check if carrier is present on device
1247 static inline int netif_dormant(const struct net_device *dev)
1249 return test_bit(__LINK_STATE_DORMANT, &dev->state);
1254 * netif_oper_up - test if device is operational
1255 * @dev: network device
1257 * Check if carrier is operational
1259 static inline int netif_oper_up(const struct net_device *dev) {
1260 return (dev->operstate == IF_OPER_UP ||
1261 dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
1265 * netif_device_present - is device available or removed
1266 * @dev: network device
1268 * Check if device has not been removed from system.
1270 static inline int netif_device_present(struct net_device *dev)
1272 return test_bit(__LINK_STATE_PRESENT, &dev->state);
1275 extern void netif_device_detach(struct net_device *dev);
1277 extern void netif_device_attach(struct net_device *dev);
1280 * Network interface message level settings
1282 #define HAVE_NETIF_MSG 1
1285 NETIF_MSG_DRV = 0x0001,
1286 NETIF_MSG_PROBE = 0x0002,
1287 NETIF_MSG_LINK = 0x0004,
1288 NETIF_MSG_TIMER = 0x0008,
1289 NETIF_MSG_IFDOWN = 0x0010,
1290 NETIF_MSG_IFUP = 0x0020,
1291 NETIF_MSG_RX_ERR = 0x0040,
1292 NETIF_MSG_TX_ERR = 0x0080,
1293 NETIF_MSG_TX_QUEUED = 0x0100,
1294 NETIF_MSG_INTR = 0x0200,
1295 NETIF_MSG_TX_DONE = 0x0400,
1296 NETIF_MSG_RX_STATUS = 0x0800,
1297 NETIF_MSG_PKTDATA = 0x1000,
1298 NETIF_MSG_HW = 0x2000,
1299 NETIF_MSG_WOL = 0x4000,
1302 #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
1303 #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
1304 #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
1305 #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
1306 #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
1307 #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
1308 #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
1309 #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
1310 #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
1311 #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
1312 #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
1313 #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
1314 #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
1315 #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
1316 #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
1318 static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
1321 if (debug_value < 0 || debug_value >= (sizeof(u32) * 8))
1322 return default_msg_enable_bits;
1323 if (debug_value == 0) /* no output */
1325 /* set low N bits */
1326 return (1 << debug_value) - 1;
1329 /* Test if receive needs to be scheduled but only if up */
1330 static inline int netif_rx_schedule_prep(struct net_device *dev,
1331 struct napi_struct *napi)
1333 return napi_schedule_prep(napi);
1336 /* Add interface to tail of rx poll list. This assumes that _prep has
1337 * already been called and returned 1.
1339 static inline void __netif_rx_schedule(struct net_device *dev,
1340 struct napi_struct *napi)
1342 __napi_schedule(napi);
1345 /* Try to reschedule poll. Called by irq handler. */
1347 static inline void netif_rx_schedule(struct net_device *dev,
1348 struct napi_struct *napi)
1350 if (netif_rx_schedule_prep(dev, napi))
1351 __netif_rx_schedule(dev, napi);
1354 /* Try to reschedule poll. Called by dev->poll() after netif_rx_complete(). */
1355 static inline int netif_rx_reschedule(struct net_device *dev,
1356 struct napi_struct *napi)
1358 if (napi_schedule_prep(napi)) {
1359 __netif_rx_schedule(dev, napi);
1365 /* same as netif_rx_complete, except that local_irq_save(flags)
1366 * has already been issued
1368 static inline void __netif_rx_complete(struct net_device *dev,
1369 struct napi_struct *napi)
1371 __napi_complete(napi);
1374 /* Remove interface from poll list: it must be in the poll list
1375 * on current cpu. This primitive is called by dev->poll(), when
1376 * it completes the work. The device cannot be out of poll list at this
1377 * moment, it is BUG().
1379 static inline void netif_rx_complete(struct net_device *dev,
1380 struct napi_struct *napi)
1382 unsigned long flags;
1384 local_irq_save(flags);
1385 __netif_rx_complete(dev, napi);
1386 local_irq_restore(flags);
1390 * netif_tx_lock - grab network device transmit lock
1391 * @dev: network device
1392 * @cpu: cpu number of lock owner
1394 * Get network device transmit lock
1396 static inline void __netif_tx_lock(struct net_device *dev, int cpu)
1398 spin_lock(&dev->_xmit_lock);
1399 dev->xmit_lock_owner = cpu;
1402 static inline void netif_tx_lock(struct net_device *dev)
1404 __netif_tx_lock(dev, smp_processor_id());
1407 static inline void netif_tx_lock_bh(struct net_device *dev)
1409 spin_lock_bh(&dev->_xmit_lock);
1410 dev->xmit_lock_owner = smp_processor_id();
1413 static inline int netif_tx_trylock(struct net_device *dev)
1415 int ok = spin_trylock(&dev->_xmit_lock);
1417 dev->xmit_lock_owner = smp_processor_id();
1421 static inline void netif_tx_unlock(struct net_device *dev)
1423 dev->xmit_lock_owner = -1;
1424 spin_unlock(&dev->_xmit_lock);
1427 static inline void netif_tx_unlock_bh(struct net_device *dev)
1429 dev->xmit_lock_owner = -1;
1430 spin_unlock_bh(&dev->_xmit_lock);
1433 #define HARD_TX_LOCK(dev, cpu) { \
1434 if ((dev->features & NETIF_F_LLTX) == 0) { \
1435 __netif_tx_lock(dev, cpu); \
1439 #define HARD_TX_UNLOCK(dev) { \
1440 if ((dev->features & NETIF_F_LLTX) == 0) { \
1441 netif_tx_unlock(dev); \
1445 static inline void netif_tx_disable(struct net_device *dev)
1447 netif_tx_lock_bh(dev);
1448 netif_stop_queue(dev);
1449 netif_tx_unlock_bh(dev);
1452 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
1454 extern void ether_setup(struct net_device *dev);
1456 /* Support for loadable net-drivers */
1457 extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
1458 void (*setup)(struct net_device *),
1459 unsigned int queue_count);
1460 #define alloc_netdev(sizeof_priv, name, setup) \
1461 alloc_netdev_mq(sizeof_priv, name, setup, 1)
1462 extern int register_netdev(struct net_device *dev);
1463 extern void unregister_netdev(struct net_device *dev);
1464 /* Functions used for secondary unicast and multicast support */
1465 extern void dev_set_rx_mode(struct net_device *dev);
1466 extern void __dev_set_rx_mode(struct net_device *dev);
1467 extern int dev_unicast_delete(struct net_device *dev, void *addr, int alen);
1468 extern int dev_unicast_add(struct net_device *dev, void *addr, int alen);
1469 extern int dev_unicast_sync(struct net_device *to, struct net_device *from);
1470 extern void dev_unicast_unsync(struct net_device *to, struct net_device *from);
1471 extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all);
1472 extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly);
1473 extern int dev_mc_sync(struct net_device *to, struct net_device *from);
1474 extern void dev_mc_unsync(struct net_device *to, struct net_device *from);
1475 extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all);
1476 extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly);
1477 extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count);
1478 extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count);
1479 extern void dev_set_promiscuity(struct net_device *dev, int inc);
1480 extern void dev_set_allmulti(struct net_device *dev, int inc);
1481 extern void netdev_state_change(struct net_device *dev);
1482 extern void netdev_features_change(struct net_device *dev);
1483 /* Load a device via the kmod */
1484 extern void dev_load(struct net *net, const char *name);
1485 extern void dev_mcast_init(void);
1486 extern int netdev_max_backlog;
1487 extern int weight_p;
1488 extern int netdev_set_master(struct net_device *dev, struct net_device *master);
1489 extern int skb_checksum_help(struct sk_buff *skb);
1490 extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
1492 extern void netdev_rx_csum_fault(struct net_device *dev);
1494 static inline void netdev_rx_csum_fault(struct net_device *dev)
1498 /* rx skb timestamps */
1499 extern void net_enable_timestamp(void);
1500 extern void net_disable_timestamp(void);
1502 #ifdef CONFIG_PROC_FS
1503 extern void *dev_seq_start(struct seq_file *seq, loff_t *pos);
1504 extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
1505 extern void dev_seq_stop(struct seq_file *seq, void *v);
1508 extern void linkwatch_run_queue(void);
1510 extern int netdev_compute_features(unsigned long all, unsigned long one);
1512 static inline int net_gso_ok(int features, int gso_type)
1514 int feature = gso_type << NETIF_F_GSO_SHIFT;
1515 return (features & feature) == feature;
1518 static inline int skb_gso_ok(struct sk_buff *skb, int features)
1520 return net_gso_ok(features, skb_shinfo(skb)->gso_type);
1523 static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
1525 return skb_is_gso(skb) &&
1526 (!skb_gso_ok(skb, dev->features) ||
1527 unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
1530 static inline void netif_set_gso_max_size(struct net_device *dev,
1533 dev->gso_max_size = size;
1536 /* On bonding slaves other than the currently active slave, suppress
1537 * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and
1538 * ARP on active-backup slaves with arp_validate enabled.
1540 static inline int skb_bond_should_drop(struct sk_buff *skb)
1542 struct net_device *dev = skb->dev;
1543 struct net_device *master = dev->master;
1546 (dev->priv_flags & IFF_SLAVE_INACTIVE)) {
1547 if ((dev->priv_flags & IFF_SLAVE_NEEDARP) &&
1548 skb->protocol == __constant_htons(ETH_P_ARP))
1551 if (master->priv_flags & IFF_MASTER_ALB) {
1552 if (skb->pkt_type != PACKET_BROADCAST &&
1553 skb->pkt_type != PACKET_MULTICAST)
1556 if (master->priv_flags & IFF_MASTER_8023AD &&
1557 skb->protocol == __constant_htons(ETH_P_SLOW))
1565 #endif /* __KERNEL__ */
1567 #endif /* _LINUX_DEV_H */