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@lxorguk.ukuu.org.uk>
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>
31 #include <linux/if_link.h>
34 #include <linux/pm_qos_params.h>
35 #include <linux/timer.h>
36 #include <linux/delay.h>
37 #include <asm/atomic.h>
38 #include <asm/cache.h>
39 #include <asm/byteorder.h>
41 #include <linux/device.h>
42 #include <linux/percpu.h>
43 #include <linux/rculist.h>
44 #include <linux/dmaengine.h>
45 #include <linux/workqueue.h>
47 #include <linux/ethtool.h>
48 #include <net/net_namespace.h>
51 #include <net/dcbnl.h>
59 /* source back-compat hooks */
60 #define SET_ETHTOOL_OPS(netdev,ops) \
61 ( (netdev)->ethtool_ops = (ops) )
63 /* hardware address assignment types */
64 #define NET_ADDR_PERM 0 /* address is permanent (default) */
65 #define NET_ADDR_RANDOM 1 /* address is generated randomly */
66 #define NET_ADDR_STOLEN 2 /* address is stolen from other device */
68 /* Backlog congestion levels */
69 #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
70 #define NET_RX_DROP 1 /* packet dropped */
73 * Transmit return codes: transmit return codes originate from three different
76 * - qdisc return codes
77 * - driver transmit return codes
80 * Drivers are allowed to return any one of those in their hard_start_xmit()
81 * function. Real network devices commonly used with qdiscs should only return
82 * the driver transmit return codes though - when qdiscs are used, the actual
83 * transmission happens asynchronously, so the value is not propagated to
84 * higher layers. Virtual network devices transmit synchronously, in this case
85 * the driver transmit return codes are consumed by dev_queue_xmit(), all
86 * others are propagated to higher layers.
89 /* qdisc ->enqueue() return codes. */
90 #define NET_XMIT_SUCCESS 0x00
91 #define NET_XMIT_DROP 0x01 /* skb dropped */
92 #define NET_XMIT_CN 0x02 /* congestion notification */
93 #define NET_XMIT_POLICED 0x03 /* skb is shot by police */
94 #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */
96 /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
97 * indicates that the device will soon be dropping packets, or already drops
98 * some packets of the same priority; prompting us to send less aggressively. */
99 #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e))
100 #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
102 /* Driver transmit return codes */
103 #define NETDEV_TX_MASK 0xf0
106 __NETDEV_TX_MIN
= INT_MIN
, /* make sure enum is signed */
107 NETDEV_TX_OK
= 0x00, /* driver took care of packet */
108 NETDEV_TX_BUSY
= 0x10, /* driver tx path was busy*/
109 NETDEV_TX_LOCKED
= 0x20, /* driver tx lock was already taken */
111 typedef enum netdev_tx netdev_tx_t
;
114 * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant;
115 * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed.
117 static inline bool dev_xmit_complete(int rc
)
120 * Positive cases with an skb consumed by a driver:
121 * - successful transmission (rc == NETDEV_TX_OK)
122 * - error while transmitting (rc < 0)
123 * - error while queueing to a different device (rc & NET_XMIT_MASK)
125 if (likely(rc
< NET_XMIT_MASK
))
133 #define MAX_ADDR_LEN 32 /* Largest hardware address length */
135 /* Initial net device group. All devices belong to group 0 by default. */
136 #define INIT_NETDEV_GROUP 0
140 * Compute the worst case header length according to the protocols
144 #if defined(CONFIG_WLAN) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
145 # if defined(CONFIG_MAC80211_MESH)
146 # define LL_MAX_HEADER 128
148 # define LL_MAX_HEADER 96
150 #elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE)
151 # define LL_MAX_HEADER 48
153 # define LL_MAX_HEADER 32
156 #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
157 !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \
158 !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
159 !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
160 #define MAX_HEADER LL_MAX_HEADER
162 #define MAX_HEADER (LL_MAX_HEADER + 48)
166 * Old network device statistics. Fields are native words
167 * (unsigned long) so they can be read and written atomically.
170 struct net_device_stats
{
171 unsigned long rx_packets
;
172 unsigned long tx_packets
;
173 unsigned long rx_bytes
;
174 unsigned long tx_bytes
;
175 unsigned long rx_errors
;
176 unsigned long tx_errors
;
177 unsigned long rx_dropped
;
178 unsigned long tx_dropped
;
179 unsigned long multicast
;
180 unsigned long collisions
;
181 unsigned long rx_length_errors
;
182 unsigned long rx_over_errors
;
183 unsigned long rx_crc_errors
;
184 unsigned long rx_frame_errors
;
185 unsigned long rx_fifo_errors
;
186 unsigned long rx_missed_errors
;
187 unsigned long tx_aborted_errors
;
188 unsigned long tx_carrier_errors
;
189 unsigned long tx_fifo_errors
;
190 unsigned long tx_heartbeat_errors
;
191 unsigned long tx_window_errors
;
192 unsigned long rx_compressed
;
193 unsigned long tx_compressed
;
196 #endif /* __KERNEL__ */
199 /* Media selection options. */
212 #include <linux/cache.h>
213 #include <linux/skbuff.h>
219 struct netdev_hw_addr
{
220 struct list_head list
;
221 unsigned char addr
[MAX_ADDR_LEN
];
223 #define NETDEV_HW_ADDR_T_LAN 1
224 #define NETDEV_HW_ADDR_T_SAN 2
225 #define NETDEV_HW_ADDR_T_SLAVE 3
226 #define NETDEV_HW_ADDR_T_UNICAST 4
227 #define NETDEV_HW_ADDR_T_MULTICAST 5
231 struct rcu_head rcu_head
;
234 struct netdev_hw_addr_list
{
235 struct list_head list
;
239 #define netdev_hw_addr_list_count(l) ((l)->count)
240 #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0)
241 #define netdev_hw_addr_list_for_each(ha, l) \
242 list_for_each_entry(ha, &(l)->list, list)
244 #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc)
245 #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc)
246 #define netdev_for_each_uc_addr(ha, dev) \
247 netdev_hw_addr_list_for_each(ha, &(dev)->uc)
249 #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc)
250 #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc)
251 #define netdev_for_each_mc_addr(ha, dev) \
252 netdev_hw_addr_list_for_each(ha, &(dev)->mc)
257 int (*hh_output
)(struct sk_buff
*skb
);
260 /* cached hardware header; allow for machine alignment needs. */
261 #define HH_DATA_MOD 16
262 #define HH_DATA_OFF(__len) \
263 (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
264 #define HH_DATA_ALIGN(__len) \
265 (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
266 unsigned long hh_data
[HH_DATA_ALIGN(LL_MAX_HEADER
) / sizeof(long)];
269 /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
271 * dev->hard_header_len ? (dev->hard_header_len +
272 * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
274 * We could use other alignment values, but we must maintain the
275 * relationship HH alignment <= LL alignment.
277 * LL_ALLOCATED_SPACE also takes into account the tailroom the device
280 #define LL_RESERVED_SPACE(dev) \
281 ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
282 #define LL_RESERVED_SPACE_EXTRA(dev,extra) \
283 ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
284 #define LL_ALLOCATED_SPACE(dev) \
285 ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
288 int (*create
) (struct sk_buff
*skb
, struct net_device
*dev
,
289 unsigned short type
, const void *daddr
,
290 const void *saddr
, unsigned len
);
291 int (*parse
)(const struct sk_buff
*skb
, unsigned char *haddr
);
292 int (*rebuild
)(struct sk_buff
*skb
);
293 int (*cache
)(const struct neighbour
*neigh
, struct hh_cache
*hh
, __be16 type
);
294 void (*cache_update
)(struct hh_cache
*hh
,
295 const struct net_device
*dev
,
296 const unsigned char *haddr
);
299 /* These flag bits are private to the generic network queueing
300 * layer, they may not be explicitly referenced by any other
304 enum netdev_state_t
{
306 __LINK_STATE_PRESENT
,
307 __LINK_STATE_NOCARRIER
,
308 __LINK_STATE_LINKWATCH_PENDING
,
309 __LINK_STATE_DORMANT
,
314 * This structure holds at boot time configured netdevice settings. They
315 * are then used in the device probing.
317 struct netdev_boot_setup
{
321 #define NETDEV_BOOT_SETUP_MAX 8
323 extern int __init
netdev_boot_setup(char *str
);
326 * Structure for NAPI scheduling similar to tasklet but with weighting
329 /* The poll_list must only be managed by the entity which
330 * changes the state of the NAPI_STATE_SCHED bit. This means
331 * whoever atomically sets that bit can add this napi_struct
332 * to the per-cpu poll_list, and whoever clears that bit
333 * can remove from the list right before clearing the bit.
335 struct list_head poll_list
;
339 int (*poll
)(struct napi_struct
*, int);
340 #ifdef CONFIG_NETPOLL
341 spinlock_t poll_lock
;
345 unsigned int gro_count
;
347 struct net_device
*dev
;
348 struct list_head dev_list
;
349 struct sk_buff
*gro_list
;
354 NAPI_STATE_SCHED
, /* Poll is scheduled */
355 NAPI_STATE_DISABLE
, /* Disable pending */
356 NAPI_STATE_NPSVC
, /* Netpoll - don't dequeue from poll_list */
366 typedef enum gro_result gro_result_t
;
369 * enum rx_handler_result - Possible return values for rx_handlers.
370 * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it
372 * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in
373 * case skb->dev was changed by rx_handler.
374 * @RX_HANDLER_EXACT: Force exact delivery, no wildcard.
375 * @RX_HANDLER_PASS: Do nothing, passe the skb as if no rx_handler was called.
377 * rx_handlers are functions called from inside __netif_receive_skb(), to do
378 * special processing of the skb, prior to delivery to protocol handlers.
380 * Currently, a net_device can only have a single rx_handler registered. Trying
381 * to register a second rx_handler will return -EBUSY.
383 * To register a rx_handler on a net_device, use netdev_rx_handler_register().
384 * To unregister a rx_handler on a net_device, use
385 * netdev_rx_handler_unregister().
387 * Upon return, rx_handler is expected to tell __netif_receive_skb() what to
390 * If the rx_handler consumed to skb in some way, it should return
391 * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for
392 * the skb to be delivered in some other ways.
394 * If the rx_handler changed skb->dev, to divert the skb to another
395 * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the
396 * new device will be called if it exists.
398 * If the rx_handler consider the skb should be ignored, it should return
399 * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that
400 * are registred on exact device (ptype->dev == skb->dev).
402 * If the rx_handler didn't changed skb->dev, but want the skb to be normally
403 * delivered, it should return RX_HANDLER_PASS.
405 * A device without a registered rx_handler will behave as if rx_handler
406 * returned RX_HANDLER_PASS.
409 enum rx_handler_result
{
415 typedef enum rx_handler_result rx_handler_result_t
;
416 typedef rx_handler_result_t
rx_handler_func_t(struct sk_buff
**pskb
);
418 extern void __napi_schedule(struct napi_struct
*n
);
420 static inline int napi_disable_pending(struct napi_struct
*n
)
422 return test_bit(NAPI_STATE_DISABLE
, &n
->state
);
426 * napi_schedule_prep - check if napi can be scheduled
429 * Test if NAPI routine is already running, and if not mark
430 * it as running. This is used as a condition variable
431 * insure only one NAPI poll instance runs. We also make
432 * sure there is no pending NAPI disable.
434 static inline int napi_schedule_prep(struct napi_struct
*n
)
436 return !napi_disable_pending(n
) &&
437 !test_and_set_bit(NAPI_STATE_SCHED
, &n
->state
);
441 * napi_schedule - schedule NAPI poll
444 * Schedule NAPI poll routine to be called if it is not already
447 static inline void napi_schedule(struct napi_struct
*n
)
449 if (napi_schedule_prep(n
))
453 /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */
454 static inline int napi_reschedule(struct napi_struct
*napi
)
456 if (napi_schedule_prep(napi
)) {
457 __napi_schedule(napi
);
464 * napi_complete - NAPI processing complete
467 * Mark NAPI processing as complete.
469 extern void __napi_complete(struct napi_struct
*n
);
470 extern void napi_complete(struct napi_struct
*n
);
473 * napi_disable - prevent NAPI from scheduling
476 * Stop NAPI from being scheduled on this context.
477 * Waits till any outstanding processing completes.
479 static inline void napi_disable(struct napi_struct
*n
)
481 set_bit(NAPI_STATE_DISABLE
, &n
->state
);
482 while (test_and_set_bit(NAPI_STATE_SCHED
, &n
->state
))
484 clear_bit(NAPI_STATE_DISABLE
, &n
->state
);
488 * napi_enable - enable NAPI scheduling
491 * Resume NAPI from being scheduled on this context.
492 * Must be paired with napi_disable.
494 static inline void napi_enable(struct napi_struct
*n
)
496 BUG_ON(!test_bit(NAPI_STATE_SCHED
, &n
->state
));
497 smp_mb__before_clear_bit();
498 clear_bit(NAPI_STATE_SCHED
, &n
->state
);
503 * napi_synchronize - wait until NAPI is not running
506 * Wait until NAPI is done being scheduled on this context.
507 * Waits till any outstanding processing completes but
508 * does not disable future activations.
510 static inline void napi_synchronize(const struct napi_struct
*n
)
512 while (test_bit(NAPI_STATE_SCHED
, &n
->state
))
516 # define napi_synchronize(n) barrier()
519 enum netdev_queue_state_t
{
521 __QUEUE_STATE_FROZEN
,
522 #define QUEUE_STATE_XOFF_OR_FROZEN ((1 << __QUEUE_STATE_XOFF) | \
523 (1 << __QUEUE_STATE_FROZEN))
526 struct netdev_queue
{
530 struct net_device
*dev
;
533 struct Qdisc
*qdisc_sleeping
;
537 #if defined(CONFIG_XPS) && defined(CONFIG_NUMA)
543 spinlock_t _xmit_lock ____cacheline_aligned_in_smp
;
546 * please use this field instead of dev->trans_start
548 unsigned long trans_start
;
549 } ____cacheline_aligned_in_smp
;
551 static inline int netdev_queue_numa_node_read(const struct netdev_queue
*q
)
553 #if defined(CONFIG_XPS) && defined(CONFIG_NUMA)
560 static inline void netdev_queue_numa_node_write(struct netdev_queue
*q
, int node
)
562 #if defined(CONFIG_XPS) && defined(CONFIG_NUMA)
569 * This structure holds an RPS map which can be of variable length. The
570 * map is an array of CPUs.
577 #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16)))
580 * The rps_dev_flow structure contains the mapping of a flow to a CPU, the
581 * tail pointer for that CPU's input queue at the time of last enqueue, and
582 * a hardware filter index.
584 struct rps_dev_flow
{
587 unsigned int last_qtail
;
589 #define RPS_NO_FILTER 0xffff
592 * The rps_dev_flow_table structure contains a table of flow mappings.
594 struct rps_dev_flow_table
{
597 struct work_struct free_work
;
598 struct rps_dev_flow flows
[0];
600 #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \
601 (_num * sizeof(struct rps_dev_flow)))
604 * The rps_sock_flow_table contains mappings of flows to the last CPU
605 * on which they were processed by the application (set in recvmsg).
607 struct rps_sock_flow_table
{
611 #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_sock_flow_table) + \
612 (_num * sizeof(u16)))
614 #define RPS_NO_CPU 0xffff
616 static inline void rps_record_sock_flow(struct rps_sock_flow_table
*table
,
620 unsigned int cpu
, index
= hash
& table
->mask
;
622 /* We only give a hint, preemption can change cpu under us */
623 cpu
= raw_smp_processor_id();
625 if (table
->ents
[index
] != cpu
)
626 table
->ents
[index
] = cpu
;
630 static inline void rps_reset_sock_flow(struct rps_sock_flow_table
*table
,
634 table
->ents
[hash
& table
->mask
] = RPS_NO_CPU
;
637 extern struct rps_sock_flow_table __rcu
*rps_sock_flow_table
;
639 #ifdef CONFIG_RFS_ACCEL
640 extern bool rps_may_expire_flow(struct net_device
*dev
, u16 rxq_index
,
641 u32 flow_id
, u16 filter_id
);
644 /* This structure contains an instance of an RX queue. */
645 struct netdev_rx_queue
{
646 struct rps_map __rcu
*rps_map
;
647 struct rps_dev_flow_table __rcu
*rps_flow_table
;
649 struct net_device
*dev
;
650 } ____cacheline_aligned_in_smp
;
651 #endif /* CONFIG_RPS */
655 * This structure holds an XPS map which can be of variable length. The
656 * map is an array of queues.
660 unsigned int alloc_len
;
664 #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + (_num * sizeof(u16)))
665 #define XPS_MIN_MAP_ALLOC ((L1_CACHE_BYTES - sizeof(struct xps_map)) \
669 * This structure holds all XPS maps for device. Maps are indexed by CPU.
671 struct xps_dev_maps
{
673 struct xps_map __rcu
*cpu_map
[0];
675 #define XPS_DEV_MAPS_SIZE (sizeof(struct xps_dev_maps) + \
676 (nr_cpu_ids * sizeof(struct xps_map *)))
677 #endif /* CONFIG_XPS */
679 #define TC_MAX_QUEUE 16
680 #define TC_BITMASK 15
681 /* HW offloaded queuing disciplines txq count and offset maps */
682 struct netdev_tc_txq
{
688 * This structure defines the management hooks for network devices.
689 * The following hooks can be defined; unless noted otherwise, they are
690 * optional and can be filled with a null pointer.
692 * int (*ndo_init)(struct net_device *dev);
693 * This function is called once when network device is registered.
694 * The network device can use this to any late stage initializaton
695 * or semantic validattion. It can fail with an error code which will
696 * be propogated back to register_netdev
698 * void (*ndo_uninit)(struct net_device *dev);
699 * This function is called when device is unregistered or when registration
700 * fails. It is not called if init fails.
702 * int (*ndo_open)(struct net_device *dev);
703 * This function is called when network device transistions to the up
706 * int (*ndo_stop)(struct net_device *dev);
707 * This function is called when network device transistions to the down
710 * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb,
711 * struct net_device *dev);
712 * Called when a packet needs to be transmitted.
713 * Must return NETDEV_TX_OK , NETDEV_TX_BUSY.
714 * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX)
715 * Required can not be NULL.
717 * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb);
718 * Called to decide which queue to when device supports multiple
721 * void (*ndo_change_rx_flags)(struct net_device *dev, int flags);
722 * This function is called to allow device receiver to make
723 * changes to configuration when multicast or promiscious is enabled.
725 * void (*ndo_set_rx_mode)(struct net_device *dev);
726 * This function is called device changes address list filtering.
728 * void (*ndo_set_multicast_list)(struct net_device *dev);
729 * This function is called when the multicast address list changes.
731 * int (*ndo_set_mac_address)(struct net_device *dev, void *addr);
732 * This function is called when the Media Access Control address
733 * needs to be changed. If this interface is not defined, the
734 * mac address can not be changed.
736 * int (*ndo_validate_addr)(struct net_device *dev);
737 * Test if Media Access Control address is valid for the device.
739 * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
740 * Called when a user request an ioctl which can't be handled by
741 * the generic interface code. If not defined ioctl's return
742 * not supported error code.
744 * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map);
745 * Used to set network devices bus interface parameters. This interface
746 * is retained for legacy reason, new devices should use the bus
747 * interface (PCI) for low level management.
749 * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu);
750 * Called when a user wants to change the Maximum Transfer Unit
751 * of a device. If not defined, any request to change MTU will
752 * will return an error.
754 * void (*ndo_tx_timeout)(struct net_device *dev);
755 * Callback uses when the transmitter has not made any progress
756 * for dev->watchdog ticks.
758 * struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev,
759 * struct rtnl_link_stats64 *storage);
760 * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
761 * Called when a user wants to get the network device usage
762 * statistics. Drivers must do one of the following:
763 * 1. Define @ndo_get_stats64 to fill in a zero-initialised
764 * rtnl_link_stats64 structure passed by the caller.
765 * 2. Define @ndo_get_stats to update a net_device_stats structure
766 * (which should normally be dev->stats) and return a pointer to
767 * it. The structure may be changed asynchronously only if each
768 * field is written atomically.
769 * 3. Update dev->stats asynchronously and atomically, and define
772 * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp);
773 * If device support VLAN receive acceleration
774 * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called
775 * when vlan groups for the device changes. Note: grp is NULL
776 * if no vlan's groups are being used.
778 * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid);
779 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
780 * this function is called when a VLAN id is registered.
782 * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid);
783 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
784 * this function is called when a VLAN id is unregistered.
786 * void (*ndo_poll_controller)(struct net_device *dev);
788 * SR-IOV management functions.
789 * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac);
790 * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos);
791 * int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate);
792 * int (*ndo_get_vf_config)(struct net_device *dev,
793 * int vf, struct ifla_vf_info *ivf);
794 * int (*ndo_set_vf_port)(struct net_device *dev, int vf,
795 * struct nlattr *port[]);
796 * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb);
797 * int (*ndo_setup_tc)(struct net_device *dev, u8 tc)
798 * Called to setup 'tc' number of traffic classes in the net device. This
799 * is always called from the stack with the rtnl lock held and netif tx
800 * queues stopped. This allows the netdevice to perform queue management
803 * Fiber Channel over Ethernet (FCoE) offload functions.
804 * int (*ndo_fcoe_enable)(struct net_device *dev);
805 * Called when the FCoE protocol stack wants to start using LLD for FCoE
806 * so the underlying device can perform whatever needed configuration or
807 * initialization to support acceleration of FCoE traffic.
809 * int (*ndo_fcoe_disable)(struct net_device *dev);
810 * Called when the FCoE protocol stack wants to stop using LLD for FCoE
811 * so the underlying device can perform whatever needed clean-ups to
812 * stop supporting acceleration of FCoE traffic.
814 * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid,
815 * struct scatterlist *sgl, unsigned int sgc);
816 * Called when the FCoE Initiator wants to initialize an I/O that
817 * is a possible candidate for Direct Data Placement (DDP). The LLD can
818 * perform necessary setup and returns 1 to indicate the device is set up
819 * successfully to perform DDP on this I/O, otherwise this returns 0.
821 * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid);
822 * Called when the FCoE Initiator/Target is done with the DDPed I/O as
823 * indicated by the FC exchange id 'xid', so the underlying device can
824 * clean up and reuse resources for later DDP requests.
826 * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid,
827 * struct scatterlist *sgl, unsigned int sgc);
828 * Called when the FCoE Target wants to initialize an I/O that
829 * is a possible candidate for Direct Data Placement (DDP). The LLD can
830 * perform necessary setup and returns 1 to indicate the device is set up
831 * successfully to perform DDP on this I/O, otherwise this returns 0.
833 * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type);
834 * Called when the underlying device wants to override default World Wide
835 * Name (WWN) generation mechanism in FCoE protocol stack to pass its own
836 * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE
837 * protocol stack to use.
840 * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb,
841 * u16 rxq_index, u32 flow_id);
842 * Set hardware filter for RFS. rxq_index is the target queue index;
843 * flow_id is a flow ID to be passed to rps_may_expire_flow() later.
844 * Return the filter ID on success, or a negative error code.
846 * Slave management functions (for bridge, bonding, etc). User should
847 * call netdev_set_master() to set dev->master properly.
848 * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev);
849 * Called to make another netdev an underling.
851 * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev);
852 * Called to release previously enslaved netdev.
854 * Feature/offload setting functions.
855 * u32 (*ndo_fix_features)(struct net_device *dev, u32 features);
856 * Adjusts the requested feature flags according to device-specific
857 * constraints, and returns the resulting flags. Must not modify
860 * int (*ndo_set_features)(struct net_device *dev, u32 features);
861 * Called to update device configuration to new features. Passed
862 * feature set might be less than what was returned by ndo_fix_features()).
863 * Must return >0 or -errno if it changed dev->features itself.
866 struct net_device_ops
{
867 int (*ndo_init
)(struct net_device
*dev
);
868 void (*ndo_uninit
)(struct net_device
*dev
);
869 int (*ndo_open
)(struct net_device
*dev
);
870 int (*ndo_stop
)(struct net_device
*dev
);
871 netdev_tx_t (*ndo_start_xmit
) (struct sk_buff
*skb
,
872 struct net_device
*dev
);
873 u16 (*ndo_select_queue
)(struct net_device
*dev
,
874 struct sk_buff
*skb
);
875 void (*ndo_change_rx_flags
)(struct net_device
*dev
,
877 void (*ndo_set_rx_mode
)(struct net_device
*dev
);
878 void (*ndo_set_multicast_list
)(struct net_device
*dev
);
879 int (*ndo_set_mac_address
)(struct net_device
*dev
,
881 int (*ndo_validate_addr
)(struct net_device
*dev
);
882 int (*ndo_do_ioctl
)(struct net_device
*dev
,
883 struct ifreq
*ifr
, int cmd
);
884 int (*ndo_set_config
)(struct net_device
*dev
,
886 int (*ndo_change_mtu
)(struct net_device
*dev
,
888 int (*ndo_neigh_setup
)(struct net_device
*dev
,
889 struct neigh_parms
*);
890 void (*ndo_tx_timeout
) (struct net_device
*dev
);
892 struct rtnl_link_stats64
* (*ndo_get_stats64
)(struct net_device
*dev
,
893 struct rtnl_link_stats64
*storage
);
894 struct net_device_stats
* (*ndo_get_stats
)(struct net_device
*dev
);
896 void (*ndo_vlan_rx_register
)(struct net_device
*dev
,
897 struct vlan_group
*grp
);
898 void (*ndo_vlan_rx_add_vid
)(struct net_device
*dev
,
900 void (*ndo_vlan_rx_kill_vid
)(struct net_device
*dev
,
902 #ifdef CONFIG_NET_POLL_CONTROLLER
903 void (*ndo_poll_controller
)(struct net_device
*dev
);
904 int (*ndo_netpoll_setup
)(struct net_device
*dev
,
905 struct netpoll_info
*info
);
906 void (*ndo_netpoll_cleanup
)(struct net_device
*dev
);
908 int (*ndo_set_vf_mac
)(struct net_device
*dev
,
910 int (*ndo_set_vf_vlan
)(struct net_device
*dev
,
911 int queue
, u16 vlan
, u8 qos
);
912 int (*ndo_set_vf_tx_rate
)(struct net_device
*dev
,
914 int (*ndo_get_vf_config
)(struct net_device
*dev
,
916 struct ifla_vf_info
*ivf
);
917 int (*ndo_set_vf_port
)(struct net_device
*dev
,
919 struct nlattr
*port
[]);
920 int (*ndo_get_vf_port
)(struct net_device
*dev
,
921 int vf
, struct sk_buff
*skb
);
922 int (*ndo_setup_tc
)(struct net_device
*dev
, u8 tc
);
923 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
924 int (*ndo_fcoe_enable
)(struct net_device
*dev
);
925 int (*ndo_fcoe_disable
)(struct net_device
*dev
);
926 int (*ndo_fcoe_ddp_setup
)(struct net_device
*dev
,
928 struct scatterlist
*sgl
,
930 int (*ndo_fcoe_ddp_done
)(struct net_device
*dev
,
932 int (*ndo_fcoe_ddp_target
)(struct net_device
*dev
,
934 struct scatterlist
*sgl
,
936 #define NETDEV_FCOE_WWNN 0
937 #define NETDEV_FCOE_WWPN 1
938 int (*ndo_fcoe_get_wwn
)(struct net_device
*dev
,
941 #ifdef CONFIG_RFS_ACCEL
942 int (*ndo_rx_flow_steer
)(struct net_device
*dev
,
943 const struct sk_buff
*skb
,
947 int (*ndo_add_slave
)(struct net_device
*dev
,
948 struct net_device
*slave_dev
);
949 int (*ndo_del_slave
)(struct net_device
*dev
,
950 struct net_device
*slave_dev
);
951 u32 (*ndo_fix_features
)(struct net_device
*dev
,
953 int (*ndo_set_features
)(struct net_device
*dev
,
958 * The DEVICE structure.
959 * Actually, this whole structure is a big mistake. It mixes I/O
960 * data with strictly "high-level" data, and it has to know about
961 * almost every data structure used in the INET module.
963 * FIXME: cleanup struct net_device such that network protocol info
970 * This is the first field of the "visible" part of this structure
971 * (i.e. as seen by users in the "Space.c" file). It is the name
976 struct pm_qos_request_list pm_qos_req
;
978 /* device name hash chain */
979 struct hlist_node name_hlist
;
984 * I/O specific fields
985 * FIXME: Merge these and struct ifmap into one
987 unsigned long mem_end
; /* shared mem end */
988 unsigned long mem_start
; /* shared mem start */
989 unsigned long base_addr
; /* device I/O address */
990 unsigned int irq
; /* device IRQ number */
993 * Some hardware also needs these fields, but they are not
994 * part of the usual set specified in Space.c.
999 struct list_head dev_list
;
1000 struct list_head napi_list
;
1001 struct list_head unreg_list
;
1003 /* currently active device features */
1005 /* user-changeable features */
1007 /* user-requested features */
1008 u32 wanted_features
;
1009 /* mask of features inheritable by VLAN devices */
1012 /* Net device feature bits; if you change something,
1013 * also update netdev_features_strings[] in ethtool.c */
1015 #define NETIF_F_SG 1 /* Scatter/gather IO. */
1016 #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
1017 #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
1018 #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
1019 #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
1020 #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
1021 #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
1022 #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
1023 #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
1024 #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
1025 #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
1026 #define NETIF_F_GSO 2048 /* Enable software GSO. */
1027 #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
1028 /* do not use LLTX in new drivers */
1029 #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
1030 #define NETIF_F_GRO 16384 /* Generic receive offload */
1031 #define NETIF_F_LRO 32768 /* large receive offload */
1033 /* the GSO_MASK reserves bits 16 through 23 */
1034 #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */
1035 #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */
1036 #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
1037 #define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */
1038 #define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */
1039 #define NETIF_F_RXCSUM (1 << 29) /* Receive checksumming offload */
1040 #define NETIF_F_NOCACHE_COPY (1 << 30) /* Use no-cache copyfromuser */
1041 #define NETIF_F_LOOPBACK (1 << 31) /* Enable loopback */
1043 /* Segmentation offload features */
1044 #define NETIF_F_GSO_SHIFT 16
1045 #define NETIF_F_GSO_MASK 0x00ff0000
1046 #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
1047 #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
1048 #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
1049 #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
1050 #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
1051 #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT)
1053 /* Features valid for ethtool to change */
1054 /* = all defined minus driver/device-class-related */
1055 #define NETIF_F_NEVER_CHANGE (NETIF_F_VLAN_CHALLENGED | \
1056 NETIF_F_LLTX | NETIF_F_NETNS_LOCAL)
1057 #define NETIF_F_ETHTOOL_BITS (0xff3fffff & ~NETIF_F_NEVER_CHANGE)
1059 /* List of features with software fallbacks. */
1060 #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \
1061 NETIF_F_TSO6 | NETIF_F_UFO)
1064 #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
1065 #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
1066 #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
1067 #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
1069 #define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
1071 #define NETIF_F_ALL_FCOE (NETIF_F_FCOE_CRC | NETIF_F_FCOE_MTU | \
1074 #define NETIF_F_ALL_TX_OFFLOADS (NETIF_F_ALL_CSUM | NETIF_F_SG | \
1075 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
1077 NETIF_F_SCTP_CSUM | \
1081 * If one device supports one of these features, then enable them
1082 * for all in netdev_increment_features.
1084 #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
1085 NETIF_F_SG | NETIF_F_HIGHDMA | \
1086 NETIF_F_FRAGLIST | NETIF_F_VLAN_CHALLENGED)
1088 * If one device doesn't support one of these features, then disable it
1089 * for all in netdev_increment_features.
1091 #define NETIF_F_ALL_FOR_ALL (NETIF_F_NOCACHE_COPY | NETIF_F_FSO)
1093 /* changeable features with no special hardware requirements */
1094 #define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO)
1096 /* Interface index. Unique device identifier */
1100 struct net_device_stats stats
;
1101 atomic_long_t rx_dropped
; /* dropped packets by core network
1102 * Do not use this in drivers.
1105 #ifdef CONFIG_WIRELESS_EXT
1106 /* List of functions to handle Wireless Extensions (instead of ioctl).
1107 * See <net/iw_handler.h> for details. Jean II */
1108 const struct iw_handler_def
* wireless_handlers
;
1109 /* Instance data managed by the core of Wireless Extensions. */
1110 struct iw_public_data
* wireless_data
;
1112 /* Management operations */
1113 const struct net_device_ops
*netdev_ops
;
1114 const struct ethtool_ops
*ethtool_ops
;
1116 /* Hardware header description */
1117 const struct header_ops
*header_ops
;
1119 unsigned int flags
; /* interface flags (a la BSD) */
1120 unsigned int priv_flags
; /* Like 'flags' but invisible to userspace. */
1121 unsigned short gflags
;
1122 unsigned short padded
; /* How much padding added by alloc_netdev() */
1124 unsigned char operstate
; /* RFC2863 operstate */
1125 unsigned char link_mode
; /* mapping policy to operstate */
1127 unsigned char if_port
; /* Selectable AUI, TP,..*/
1128 unsigned char dma
; /* DMA channel */
1130 unsigned int mtu
; /* interface MTU value */
1131 unsigned short type
; /* interface hardware type */
1132 unsigned short hard_header_len
; /* hardware hdr length */
1134 /* extra head- and tailroom the hardware may need, but not in all cases
1135 * can this be guaranteed, especially tailroom. Some cases also use
1136 * LL_MAX_HEADER instead to allocate the skb.
1138 unsigned short needed_headroom
;
1139 unsigned short needed_tailroom
;
1141 /* Interface address info. */
1142 unsigned char perm_addr
[MAX_ADDR_LEN
]; /* permanent hw address */
1143 unsigned char addr_assign_type
; /* hw address assignment type */
1144 unsigned char addr_len
; /* hardware address length */
1145 unsigned short dev_id
; /* for shared network cards */
1147 spinlock_t addr_list_lock
;
1148 struct netdev_hw_addr_list uc
; /* Unicast mac addresses */
1149 struct netdev_hw_addr_list mc
; /* Multicast mac addresses */
1151 unsigned int promiscuity
;
1152 unsigned int allmulti
;
1155 /* Protocol specific pointers */
1157 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1158 struct vlan_group __rcu
*vlgrp
; /* VLAN group */
1160 #ifdef CONFIG_NET_DSA
1161 void *dsa_ptr
; /* dsa specific data */
1163 void *atalk_ptr
; /* AppleTalk link */
1164 struct in_device __rcu
*ip_ptr
; /* IPv4 specific data */
1165 struct dn_dev __rcu
*dn_ptr
; /* DECnet specific data */
1166 struct inet6_dev __rcu
*ip6_ptr
; /* IPv6 specific data */
1167 void *ec_ptr
; /* Econet specific data */
1168 void *ax25_ptr
; /* AX.25 specific data */
1169 struct wireless_dev
*ieee80211_ptr
; /* IEEE 802.11 specific data,
1170 assign before registering */
1173 * Cache lines mostly used on receive path (including eth_type_trans())
1175 unsigned long last_rx
; /* Time of last Rx
1176 * This should not be set in
1177 * drivers, unless really needed,
1178 * because network stack (bonding)
1179 * use it if/when necessary, to
1180 * avoid dirtying this cache line.
1183 struct net_device
*master
; /* Pointer to master device of a group,
1184 * which this device is member of.
1187 /* Interface address info used in eth_type_trans() */
1188 unsigned char *dev_addr
; /* hw address, (before bcast
1189 because most packets are
1192 struct netdev_hw_addr_list dev_addrs
; /* list of device
1195 unsigned char broadcast
[MAX_ADDR_LEN
]; /* hw bcast add */
1198 struct kset
*queues_kset
;
1200 struct netdev_rx_queue
*_rx
;
1202 /* Number of RX queues allocated at register_netdev() time */
1203 unsigned int num_rx_queues
;
1205 /* Number of RX queues currently active in device */
1206 unsigned int real_num_rx_queues
;
1208 #ifdef CONFIG_RFS_ACCEL
1209 /* CPU reverse-mapping for RX completion interrupts, indexed
1210 * by RX queue number. Assigned by driver. This must only be
1211 * set if the ndo_rx_flow_steer operation is defined. */
1212 struct cpu_rmap
*rx_cpu_rmap
;
1216 rx_handler_func_t __rcu
*rx_handler
;
1217 void __rcu
*rx_handler_data
;
1219 struct netdev_queue __rcu
*ingress_queue
;
1222 * Cache lines mostly used on transmit path
1224 struct netdev_queue
*_tx ____cacheline_aligned_in_smp
;
1226 /* Number of TX queues allocated at alloc_netdev_mq() time */
1227 unsigned int num_tx_queues
;
1229 /* Number of TX queues currently active in device */
1230 unsigned int real_num_tx_queues
;
1232 /* root qdisc from userspace point of view */
1233 struct Qdisc
*qdisc
;
1235 unsigned long tx_queue_len
; /* Max frames per queue allowed */
1236 spinlock_t tx_global_lock
;
1239 struct xps_dev_maps __rcu
*xps_maps
;
1242 /* These may be needed for future network-power-down code. */
1245 * trans_start here is expensive for high speed devices on SMP,
1246 * please use netdev_queue->trans_start instead.
1248 unsigned long trans_start
; /* Time (in jiffies) of last Tx */
1250 int watchdog_timeo
; /* used by dev_watchdog() */
1251 struct timer_list watchdog_timer
;
1253 /* Number of references to this device */
1254 int __percpu
*pcpu_refcnt
;
1256 /* delayed register/unregister */
1257 struct list_head todo_list
;
1258 /* device index hash chain */
1259 struct hlist_node index_hlist
;
1261 struct list_head link_watch_list
;
1263 /* register/unregister state machine */
1264 enum { NETREG_UNINITIALIZED
=0,
1265 NETREG_REGISTERED
, /* completed register_netdevice */
1266 NETREG_UNREGISTERING
, /* called unregister_netdevice */
1267 NETREG_UNREGISTERED
, /* completed unregister todo */
1268 NETREG_RELEASED
, /* called free_netdev */
1269 NETREG_DUMMY
, /* dummy device for NAPI poll */
1272 bool dismantle
; /* device is going do be freed */
1275 RTNL_LINK_INITIALIZED
,
1276 RTNL_LINK_INITIALIZING
,
1277 } rtnl_link_state
:16;
1279 /* Called from unregister, can be used to call free_netdev */
1280 void (*destructor
)(struct net_device
*dev
);
1282 #ifdef CONFIG_NETPOLL
1283 struct netpoll_info
*npinfo
;
1286 #ifdef CONFIG_NET_NS
1287 /* Network namespace this network device is inside */
1291 /* mid-layer private */
1294 struct pcpu_lstats __percpu
*lstats
; /* loopback stats */
1295 struct pcpu_tstats __percpu
*tstats
; /* tunnel stats */
1296 struct pcpu_dstats __percpu
*dstats
; /* dummy stats */
1299 struct garp_port __rcu
*garp_port
;
1301 /* class/net/name entry */
1303 /* space for optional device, statistics, and wireless sysfs groups */
1304 const struct attribute_group
*sysfs_groups
[4];
1306 /* rtnetlink link ops */
1307 const struct rtnl_link_ops
*rtnl_link_ops
;
1309 /* for setting kernel sock attribute on TCP connection setup */
1310 #define GSO_MAX_SIZE 65536
1311 unsigned int gso_max_size
;
1314 /* Data Center Bridging netlink ops */
1315 const struct dcbnl_rtnl_ops
*dcbnl_ops
;
1318 struct netdev_tc_txq tc_to_txq
[TC_MAX_QUEUE
];
1319 u8 prio_tc_map
[TC_BITMASK
+ 1];
1321 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
1322 /* max exchange id for FCoE LRO by ddp */
1323 unsigned int fcoe_ddp_xid
;
1325 /* phy device may attach itself for hardware timestamping */
1326 struct phy_device
*phydev
;
1328 /* group the device belongs to */
1331 #define to_net_dev(d) container_of(d, struct net_device, dev)
1333 #define NETDEV_ALIGN 32
1336 int netdev_get_prio_tc_map(const struct net_device
*dev
, u32 prio
)
1338 return dev
->prio_tc_map
[prio
& TC_BITMASK
];
1342 int netdev_set_prio_tc_map(struct net_device
*dev
, u8 prio
, u8 tc
)
1344 if (tc
>= dev
->num_tc
)
1347 dev
->prio_tc_map
[prio
& TC_BITMASK
] = tc
& TC_BITMASK
;
1352 void netdev_reset_tc(struct net_device
*dev
)
1355 memset(dev
->tc_to_txq
, 0, sizeof(dev
->tc_to_txq
));
1356 memset(dev
->prio_tc_map
, 0, sizeof(dev
->prio_tc_map
));
1360 int netdev_set_tc_queue(struct net_device
*dev
, u8 tc
, u16 count
, u16 offset
)
1362 if (tc
>= dev
->num_tc
)
1365 dev
->tc_to_txq
[tc
].count
= count
;
1366 dev
->tc_to_txq
[tc
].offset
= offset
;
1371 int netdev_set_num_tc(struct net_device
*dev
, u8 num_tc
)
1373 if (num_tc
> TC_MAX_QUEUE
)
1376 dev
->num_tc
= num_tc
;
1381 int netdev_get_num_tc(struct net_device
*dev
)
1387 struct netdev_queue
*netdev_get_tx_queue(const struct net_device
*dev
,
1390 return &dev
->_tx
[index
];
1393 static inline void netdev_for_each_tx_queue(struct net_device
*dev
,
1394 void (*f
)(struct net_device
*,
1395 struct netdev_queue
*,
1401 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
1402 f(dev
, &dev
->_tx
[i
], arg
);
1406 * Net namespace inlines
1409 struct net
*dev_net(const struct net_device
*dev
)
1411 return read_pnet(&dev
->nd_net
);
1415 void dev_net_set(struct net_device
*dev
, struct net
*net
)
1417 #ifdef CONFIG_NET_NS
1418 release_net(dev
->nd_net
);
1419 dev
->nd_net
= hold_net(net
);
1423 static inline bool netdev_uses_dsa_tags(struct net_device
*dev
)
1425 #ifdef CONFIG_NET_DSA_TAG_DSA
1426 if (dev
->dsa_ptr
!= NULL
)
1427 return dsa_uses_dsa_tags(dev
->dsa_ptr
);
1433 #ifndef CONFIG_NET_NS
1434 static inline void skb_set_dev(struct sk_buff
*skb
, struct net_device
*dev
)
1438 #else /* CONFIG_NET_NS */
1439 void skb_set_dev(struct sk_buff
*skb
, struct net_device
*dev
);
1442 static inline bool netdev_uses_trailer_tags(struct net_device
*dev
)
1444 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1445 if (dev
->dsa_ptr
!= NULL
)
1446 return dsa_uses_trailer_tags(dev
->dsa_ptr
);
1453 * netdev_priv - access network device private data
1454 * @dev: network device
1456 * Get network device private data
1458 static inline void *netdev_priv(const struct net_device
*dev
)
1460 return (char *)dev
+ ALIGN(sizeof(struct net_device
), NETDEV_ALIGN
);
1463 /* Set the sysfs physical device reference for the network logical device
1464 * if set prior to registration will cause a symlink during initialization.
1466 #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
1468 /* Set the sysfs device type for the network logical device to allow
1469 * fin grained indentification of different network device types. For
1470 * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc.
1472 #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype))
1475 * netif_napi_add - initialize a napi context
1476 * @dev: network device
1477 * @napi: napi context
1478 * @poll: polling function
1479 * @weight: default weight
1481 * netif_napi_add() must be used to initialize a napi context prior to calling
1482 * *any* of the other napi related functions.
1484 void netif_napi_add(struct net_device
*dev
, struct napi_struct
*napi
,
1485 int (*poll
)(struct napi_struct
*, int), int weight
);
1488 * netif_napi_del - remove a napi context
1489 * @napi: napi context
1491 * netif_napi_del() removes a napi context from the network device napi list
1493 void netif_napi_del(struct napi_struct
*napi
);
1495 struct napi_gro_cb
{
1496 /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
1499 /* Length of frag0. */
1500 unsigned int frag0_len
;
1502 /* This indicates where we are processing relative to skb->data. */
1505 /* This is non-zero if the packet may be of the same flow. */
1508 /* This is non-zero if the packet cannot be merged with the new skb. */
1511 /* Number of segments aggregated. */
1518 #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
1520 struct packet_type
{
1521 __be16 type
; /* This is really htons(ether_type). */
1522 struct net_device
*dev
; /* NULL is wildcarded here */
1523 int (*func
) (struct sk_buff
*,
1524 struct net_device
*,
1525 struct packet_type
*,
1526 struct net_device
*);
1527 struct sk_buff
*(*gso_segment
)(struct sk_buff
*skb
,
1529 int (*gso_send_check
)(struct sk_buff
*skb
);
1530 struct sk_buff
**(*gro_receive
)(struct sk_buff
**head
,
1531 struct sk_buff
*skb
);
1532 int (*gro_complete
)(struct sk_buff
*skb
);
1533 void *af_packet_priv
;
1534 struct list_head list
;
1537 #include <linux/notifier.h>
1539 extern rwlock_t dev_base_lock
; /* Device list lock */
1542 #define for_each_netdev(net, d) \
1543 list_for_each_entry(d, &(net)->dev_base_head, dev_list)
1544 #define for_each_netdev_reverse(net, d) \
1545 list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list)
1546 #define for_each_netdev_rcu(net, d) \
1547 list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list)
1548 #define for_each_netdev_safe(net, d, n) \
1549 list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
1550 #define for_each_netdev_continue(net, d) \
1551 list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
1552 #define for_each_netdev_continue_rcu(net, d) \
1553 list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list)
1554 #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
1556 static inline struct net_device
*next_net_device(struct net_device
*dev
)
1558 struct list_head
*lh
;
1562 lh
= dev
->dev_list
.next
;
1563 return lh
== &net
->dev_base_head
? NULL
: net_device_entry(lh
);
1566 static inline struct net_device
*next_net_device_rcu(struct net_device
*dev
)
1568 struct list_head
*lh
;
1572 lh
= rcu_dereference(list_next_rcu(&dev
->dev_list
));
1573 return lh
== &net
->dev_base_head
? NULL
: net_device_entry(lh
);
1576 static inline struct net_device
*first_net_device(struct net
*net
)
1578 return list_empty(&net
->dev_base_head
) ? NULL
:
1579 net_device_entry(net
->dev_base_head
.next
);
1582 static inline struct net_device
*first_net_device_rcu(struct net
*net
)
1584 struct list_head
*lh
= rcu_dereference(list_next_rcu(&net
->dev_base_head
));
1586 return lh
== &net
->dev_base_head
? NULL
: net_device_entry(lh
);
1589 extern int netdev_boot_setup_check(struct net_device
*dev
);
1590 extern unsigned long netdev_boot_base(const char *prefix
, int unit
);
1591 extern struct net_device
*dev_getbyhwaddr_rcu(struct net
*net
, unsigned short type
,
1592 const char *hwaddr
);
1593 extern struct net_device
*dev_getfirstbyhwtype(struct net
*net
, unsigned short type
);
1594 extern struct net_device
*__dev_getfirstbyhwtype(struct net
*net
, unsigned short type
);
1595 extern void dev_add_pack(struct packet_type
*pt
);
1596 extern void dev_remove_pack(struct packet_type
*pt
);
1597 extern void __dev_remove_pack(struct packet_type
*pt
);
1599 extern struct net_device
*dev_get_by_flags_rcu(struct net
*net
, unsigned short flags
,
1600 unsigned short mask
);
1601 extern struct net_device
*dev_get_by_name(struct net
*net
, const char *name
);
1602 extern struct net_device
*dev_get_by_name_rcu(struct net
*net
, const char *name
);
1603 extern struct net_device
*__dev_get_by_name(struct net
*net
, const char *name
);
1604 extern int dev_alloc_name(struct net_device
*dev
, const char *name
);
1605 extern int dev_open(struct net_device
*dev
);
1606 extern int dev_close(struct net_device
*dev
);
1607 extern void dev_disable_lro(struct net_device
*dev
);
1608 extern int dev_queue_xmit(struct sk_buff
*skb
);
1609 extern int register_netdevice(struct net_device
*dev
);
1610 extern void unregister_netdevice_queue(struct net_device
*dev
,
1611 struct list_head
*head
);
1612 extern void unregister_netdevice_many(struct list_head
*head
);
1613 static inline void unregister_netdevice(struct net_device
*dev
)
1615 unregister_netdevice_queue(dev
, NULL
);
1618 extern int netdev_refcnt_read(const struct net_device
*dev
);
1619 extern void free_netdev(struct net_device
*dev
);
1620 extern void synchronize_net(void);
1621 extern int register_netdevice_notifier(struct notifier_block
*nb
);
1622 extern int unregister_netdevice_notifier(struct notifier_block
*nb
);
1623 extern int init_dummy_netdev(struct net_device
*dev
);
1624 extern void netdev_resync_ops(struct net_device
*dev
);
1626 extern int call_netdevice_notifiers(unsigned long val
, struct net_device
*dev
);
1627 extern struct net_device
*dev_get_by_index(struct net
*net
, int ifindex
);
1628 extern struct net_device
*__dev_get_by_index(struct net
*net
, int ifindex
);
1629 extern struct net_device
*dev_get_by_index_rcu(struct net
*net
, int ifindex
);
1630 extern int dev_restart(struct net_device
*dev
);
1631 #ifdef CONFIG_NETPOLL_TRAP
1632 extern int netpoll_trap(void);
1634 extern int skb_gro_receive(struct sk_buff
**head
,
1635 struct sk_buff
*skb
);
1636 extern void skb_gro_reset_offset(struct sk_buff
*skb
);
1638 static inline unsigned int skb_gro_offset(const struct sk_buff
*skb
)
1640 return NAPI_GRO_CB(skb
)->data_offset
;
1643 static inline unsigned int skb_gro_len(const struct sk_buff
*skb
)
1645 return skb
->len
- NAPI_GRO_CB(skb
)->data_offset
;
1648 static inline void skb_gro_pull(struct sk_buff
*skb
, unsigned int len
)
1650 NAPI_GRO_CB(skb
)->data_offset
+= len
;
1653 static inline void *skb_gro_header_fast(struct sk_buff
*skb
,
1654 unsigned int offset
)
1656 return NAPI_GRO_CB(skb
)->frag0
+ offset
;
1659 static inline int skb_gro_header_hard(struct sk_buff
*skb
, unsigned int hlen
)
1661 return NAPI_GRO_CB(skb
)->frag0_len
< hlen
;
1664 static inline void *skb_gro_header_slow(struct sk_buff
*skb
, unsigned int hlen
,
1665 unsigned int offset
)
1667 NAPI_GRO_CB(skb
)->frag0
= NULL
;
1668 NAPI_GRO_CB(skb
)->frag0_len
= 0;
1669 return pskb_may_pull(skb
, hlen
) ? skb
->data
+ offset
: NULL
;
1672 static inline void *skb_gro_mac_header(struct sk_buff
*skb
)
1674 return NAPI_GRO_CB(skb
)->frag0
?: skb_mac_header(skb
);
1677 static inline void *skb_gro_network_header(struct sk_buff
*skb
)
1679 return (NAPI_GRO_CB(skb
)->frag0
?: skb
->data
) +
1680 skb_network_offset(skb
);
1683 static inline int dev_hard_header(struct sk_buff
*skb
, struct net_device
*dev
,
1684 unsigned short type
,
1685 const void *daddr
, const void *saddr
,
1688 if (!dev
->header_ops
|| !dev
->header_ops
->create
)
1691 return dev
->header_ops
->create(skb
, dev
, type
, daddr
, saddr
, len
);
1694 static inline int dev_parse_header(const struct sk_buff
*skb
,
1695 unsigned char *haddr
)
1697 const struct net_device
*dev
= skb
->dev
;
1699 if (!dev
->header_ops
|| !dev
->header_ops
->parse
)
1701 return dev
->header_ops
->parse(skb
, haddr
);
1704 typedef int gifconf_func_t(struct net_device
* dev
, char __user
* bufptr
, int len
);
1705 extern int register_gifconf(unsigned int family
, gifconf_func_t
* gifconf
);
1706 static inline int unregister_gifconf(unsigned int family
)
1708 return register_gifconf(family
, NULL
);
1712 * Incoming packets are placed on per-cpu queues
1714 struct softnet_data
{
1715 struct Qdisc
*output_queue
;
1716 struct Qdisc
**output_queue_tailp
;
1717 struct list_head poll_list
;
1718 struct sk_buff
*completion_queue
;
1719 struct sk_buff_head process_queue
;
1722 unsigned int processed
;
1723 unsigned int time_squeeze
;
1724 unsigned int cpu_collision
;
1725 unsigned int received_rps
;
1728 struct softnet_data
*rps_ipi_list
;
1730 /* Elements below can be accessed between CPUs for RPS */
1731 struct call_single_data csd ____cacheline_aligned_in_smp
;
1732 struct softnet_data
*rps_ipi_next
;
1734 unsigned int input_queue_head
;
1735 unsigned int input_queue_tail
;
1738 struct sk_buff_head input_pkt_queue
;
1739 struct napi_struct backlog
;
1742 static inline void input_queue_head_incr(struct softnet_data
*sd
)
1745 sd
->input_queue_head
++;
1749 static inline void input_queue_tail_incr_save(struct softnet_data
*sd
,
1750 unsigned int *qtail
)
1753 *qtail
= ++sd
->input_queue_tail
;
1757 DECLARE_PER_CPU_ALIGNED(struct softnet_data
, softnet_data
);
1759 extern void __netif_schedule(struct Qdisc
*q
);
1761 static inline void netif_schedule_queue(struct netdev_queue
*txq
)
1763 if (!test_bit(__QUEUE_STATE_XOFF
, &txq
->state
))
1764 __netif_schedule(txq
->qdisc
);
1767 static inline void netif_tx_schedule_all(struct net_device
*dev
)
1771 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
1772 netif_schedule_queue(netdev_get_tx_queue(dev
, i
));
1775 static inline void netif_tx_start_queue(struct netdev_queue
*dev_queue
)
1777 clear_bit(__QUEUE_STATE_XOFF
, &dev_queue
->state
);
1781 * netif_start_queue - allow transmit
1782 * @dev: network device
1784 * Allow upper layers to call the device hard_start_xmit routine.
1786 static inline void netif_start_queue(struct net_device
*dev
)
1788 netif_tx_start_queue(netdev_get_tx_queue(dev
, 0));
1791 static inline void netif_tx_start_all_queues(struct net_device
*dev
)
1795 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
1796 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
1797 netif_tx_start_queue(txq
);
1801 static inline void netif_tx_wake_queue(struct netdev_queue
*dev_queue
)
1803 #ifdef CONFIG_NETPOLL_TRAP
1804 if (netpoll_trap()) {
1805 netif_tx_start_queue(dev_queue
);
1809 if (test_and_clear_bit(__QUEUE_STATE_XOFF
, &dev_queue
->state
))
1810 __netif_schedule(dev_queue
->qdisc
);
1814 * netif_wake_queue - restart transmit
1815 * @dev: network device
1817 * Allow upper layers to call the device hard_start_xmit routine.
1818 * Used for flow control when transmit resources are available.
1820 static inline void netif_wake_queue(struct net_device
*dev
)
1822 netif_tx_wake_queue(netdev_get_tx_queue(dev
, 0));
1825 static inline void netif_tx_wake_all_queues(struct net_device
*dev
)
1829 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
1830 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
1831 netif_tx_wake_queue(txq
);
1835 static inline void netif_tx_stop_queue(struct netdev_queue
*dev_queue
)
1837 if (WARN_ON(!dev_queue
)) {
1838 pr_info("netif_stop_queue() cannot be called before register_netdev()\n");
1841 set_bit(__QUEUE_STATE_XOFF
, &dev_queue
->state
);
1845 * netif_stop_queue - stop transmitted packets
1846 * @dev: network device
1848 * Stop upper layers calling the device hard_start_xmit routine.
1849 * Used for flow control when transmit resources are unavailable.
1851 static inline void netif_stop_queue(struct net_device
*dev
)
1853 netif_tx_stop_queue(netdev_get_tx_queue(dev
, 0));
1856 static inline void netif_tx_stop_all_queues(struct net_device
*dev
)
1860 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
1861 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
1862 netif_tx_stop_queue(txq
);
1866 static inline int netif_tx_queue_stopped(const struct netdev_queue
*dev_queue
)
1868 return test_bit(__QUEUE_STATE_XOFF
, &dev_queue
->state
);
1872 * netif_queue_stopped - test if transmit queue is flowblocked
1873 * @dev: network device
1875 * Test if transmit queue on device is currently unable to send.
1877 static inline int netif_queue_stopped(const struct net_device
*dev
)
1879 return netif_tx_queue_stopped(netdev_get_tx_queue(dev
, 0));
1882 static inline int netif_tx_queue_frozen_or_stopped(const struct netdev_queue
*dev_queue
)
1884 return dev_queue
->state
& QUEUE_STATE_XOFF_OR_FROZEN
;
1888 * netif_running - test if up
1889 * @dev: network device
1891 * Test if the device has been brought up.
1893 static inline int netif_running(const struct net_device
*dev
)
1895 return test_bit(__LINK_STATE_START
, &dev
->state
);
1899 * Routines to manage the subqueues on a device. We only need start
1900 * stop, and a check if it's stopped. All other device management is
1901 * done at the overall netdevice level.
1902 * Also test the device if we're multiqueue.
1906 * netif_start_subqueue - allow sending packets on subqueue
1907 * @dev: network device
1908 * @queue_index: sub queue index
1910 * Start individual transmit queue of a device with multiple transmit queues.
1912 static inline void netif_start_subqueue(struct net_device
*dev
, u16 queue_index
)
1914 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, queue_index
);
1916 netif_tx_start_queue(txq
);
1920 * netif_stop_subqueue - stop sending packets on subqueue
1921 * @dev: network device
1922 * @queue_index: sub queue index
1924 * Stop individual transmit queue of a device with multiple transmit queues.
1926 static inline void netif_stop_subqueue(struct net_device
*dev
, u16 queue_index
)
1928 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, queue_index
);
1929 #ifdef CONFIG_NETPOLL_TRAP
1933 netif_tx_stop_queue(txq
);
1937 * netif_subqueue_stopped - test status of subqueue
1938 * @dev: network device
1939 * @queue_index: sub queue index
1941 * Check individual transmit queue of a device with multiple transmit queues.
1943 static inline int __netif_subqueue_stopped(const struct net_device
*dev
,
1946 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, queue_index
);
1948 return netif_tx_queue_stopped(txq
);
1951 static inline int netif_subqueue_stopped(const struct net_device
*dev
,
1952 struct sk_buff
*skb
)
1954 return __netif_subqueue_stopped(dev
, skb_get_queue_mapping(skb
));
1958 * netif_wake_subqueue - allow sending packets on subqueue
1959 * @dev: network device
1960 * @queue_index: sub queue index
1962 * Resume individual transmit queue of a device with multiple transmit queues.
1964 static inline void netif_wake_subqueue(struct net_device
*dev
, u16 queue_index
)
1966 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, queue_index
);
1967 #ifdef CONFIG_NETPOLL_TRAP
1971 if (test_and_clear_bit(__QUEUE_STATE_XOFF
, &txq
->state
))
1972 __netif_schedule(txq
->qdisc
);
1976 * Returns a Tx hash for the given packet when dev->real_num_tx_queues is used
1977 * as a distribution range limit for the returned value.
1979 static inline u16
skb_tx_hash(const struct net_device
*dev
,
1980 const struct sk_buff
*skb
)
1982 return __skb_tx_hash(dev
, skb
, dev
->real_num_tx_queues
);
1986 * netif_is_multiqueue - test if device has multiple transmit queues
1987 * @dev: network device
1989 * Check if device has multiple transmit queues
1991 static inline int netif_is_multiqueue(const struct net_device
*dev
)
1993 return dev
->num_tx_queues
> 1;
1996 extern int netif_set_real_num_tx_queues(struct net_device
*dev
,
2000 extern int netif_set_real_num_rx_queues(struct net_device
*dev
,
2003 static inline int netif_set_real_num_rx_queues(struct net_device
*dev
,
2010 static inline int netif_copy_real_num_queues(struct net_device
*to_dev
,
2011 const struct net_device
*from_dev
)
2013 netif_set_real_num_tx_queues(to_dev
, from_dev
->real_num_tx_queues
);
2015 return netif_set_real_num_rx_queues(to_dev
,
2016 from_dev
->real_num_rx_queues
);
2022 /* Use this variant when it is known for sure that it
2023 * is executing from hardware interrupt context or with hardware interrupts
2026 extern void dev_kfree_skb_irq(struct sk_buff
*skb
);
2028 /* Use this variant in places where it could be invoked
2029 * from either hardware interrupt or other context, with hardware interrupts
2030 * either disabled or enabled.
2032 extern void dev_kfree_skb_any(struct sk_buff
*skb
);
2034 extern int netif_rx(struct sk_buff
*skb
);
2035 extern int netif_rx_ni(struct sk_buff
*skb
);
2036 extern int netif_receive_skb(struct sk_buff
*skb
);
2037 extern gro_result_t
dev_gro_receive(struct napi_struct
*napi
,
2038 struct sk_buff
*skb
);
2039 extern gro_result_t
napi_skb_finish(gro_result_t ret
, struct sk_buff
*skb
);
2040 extern gro_result_t
napi_gro_receive(struct napi_struct
*napi
,
2041 struct sk_buff
*skb
);
2042 extern void napi_gro_flush(struct napi_struct
*napi
);
2043 extern struct sk_buff
* napi_get_frags(struct napi_struct
*napi
);
2044 extern gro_result_t
napi_frags_finish(struct napi_struct
*napi
,
2045 struct sk_buff
*skb
,
2047 extern struct sk_buff
* napi_frags_skb(struct napi_struct
*napi
);
2048 extern gro_result_t
napi_gro_frags(struct napi_struct
*napi
);
2050 static inline void napi_free_frags(struct napi_struct
*napi
)
2052 kfree_skb(napi
->skb
);
2056 extern int netdev_rx_handler_register(struct net_device
*dev
,
2057 rx_handler_func_t
*rx_handler
,
2058 void *rx_handler_data
);
2059 extern void netdev_rx_handler_unregister(struct net_device
*dev
);
2061 extern int dev_valid_name(const char *name
);
2062 extern int dev_ioctl(struct net
*net
, unsigned int cmd
, void __user
*);
2063 extern int dev_ethtool(struct net
*net
, struct ifreq
*);
2064 extern unsigned dev_get_flags(const struct net_device
*);
2065 extern int __dev_change_flags(struct net_device
*, unsigned int flags
);
2066 extern int dev_change_flags(struct net_device
*, unsigned);
2067 extern void __dev_notify_flags(struct net_device
*, unsigned int old_flags
);
2068 extern int dev_change_name(struct net_device
*, const char *);
2069 extern int dev_set_alias(struct net_device
*, const char *, size_t);
2070 extern int dev_change_net_namespace(struct net_device
*,
2071 struct net
*, const char *);
2072 extern int dev_set_mtu(struct net_device
*, int);
2073 extern void dev_set_group(struct net_device
*, int);
2074 extern int dev_set_mac_address(struct net_device
*,
2076 extern int dev_hard_start_xmit(struct sk_buff
*skb
,
2077 struct net_device
*dev
,
2078 struct netdev_queue
*txq
);
2079 extern int dev_forward_skb(struct net_device
*dev
,
2080 struct sk_buff
*skb
);
2082 extern int netdev_budget
;
2084 /* Called by rtnetlink.c:rtnl_unlock() */
2085 extern void netdev_run_todo(void);
2088 * dev_put - release reference to device
2089 * @dev: network device
2091 * Release reference to device to allow it to be freed.
2093 static inline void dev_put(struct net_device
*dev
)
2095 irqsafe_cpu_dec(*dev
->pcpu_refcnt
);
2099 * dev_hold - get reference to device
2100 * @dev: network device
2102 * Hold reference to device to keep it from being freed.
2104 static inline void dev_hold(struct net_device
*dev
)
2106 irqsafe_cpu_inc(*dev
->pcpu_refcnt
);
2109 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
2110 * and _off may be called from IRQ context, but it is caller
2111 * who is responsible for serialization of these calls.
2113 * The name carrier is inappropriate, these functions should really be
2114 * called netif_lowerlayer_*() because they represent the state of any
2115 * kind of lower layer not just hardware media.
2118 extern void linkwatch_fire_event(struct net_device
*dev
);
2119 extern void linkwatch_forget_dev(struct net_device
*dev
);
2122 * netif_carrier_ok - test if carrier present
2123 * @dev: network device
2125 * Check if carrier is present on device
2127 static inline int netif_carrier_ok(const struct net_device
*dev
)
2129 return !test_bit(__LINK_STATE_NOCARRIER
, &dev
->state
);
2132 extern unsigned long dev_trans_start(struct net_device
*dev
);
2134 extern void __netdev_watchdog_up(struct net_device
*dev
);
2136 extern void netif_carrier_on(struct net_device
*dev
);
2138 extern void netif_carrier_off(struct net_device
*dev
);
2140 extern void netif_notify_peers(struct net_device
*dev
);
2143 * netif_dormant_on - mark device as dormant.
2144 * @dev: network device
2146 * Mark device as dormant (as per RFC2863).
2148 * The dormant state indicates that the relevant interface is not
2149 * actually in a condition to pass packets (i.e., it is not 'up') but is
2150 * in a "pending" state, waiting for some external event. For "on-
2151 * demand" interfaces, this new state identifies the situation where the
2152 * interface is waiting for events to place it in the up state.
2155 static inline void netif_dormant_on(struct net_device
*dev
)
2157 if (!test_and_set_bit(__LINK_STATE_DORMANT
, &dev
->state
))
2158 linkwatch_fire_event(dev
);
2162 * netif_dormant_off - set device as not dormant.
2163 * @dev: network device
2165 * Device is not in dormant state.
2167 static inline void netif_dormant_off(struct net_device
*dev
)
2169 if (test_and_clear_bit(__LINK_STATE_DORMANT
, &dev
->state
))
2170 linkwatch_fire_event(dev
);
2174 * netif_dormant - test if carrier present
2175 * @dev: network device
2177 * Check if carrier is present on device
2179 static inline int netif_dormant(const struct net_device
*dev
)
2181 return test_bit(__LINK_STATE_DORMANT
, &dev
->state
);
2186 * netif_oper_up - test if device is operational
2187 * @dev: network device
2189 * Check if carrier is operational
2191 static inline int netif_oper_up(const struct net_device
*dev
)
2193 return (dev
->operstate
== IF_OPER_UP
||
2194 dev
->operstate
== IF_OPER_UNKNOWN
/* backward compat */);
2198 * netif_device_present - is device available or removed
2199 * @dev: network device
2201 * Check if device has not been removed from system.
2203 static inline int netif_device_present(struct net_device
*dev
)
2205 return test_bit(__LINK_STATE_PRESENT
, &dev
->state
);
2208 extern void netif_device_detach(struct net_device
*dev
);
2210 extern void netif_device_attach(struct net_device
*dev
);
2213 * Network interface message level settings
2217 NETIF_MSG_DRV
= 0x0001,
2218 NETIF_MSG_PROBE
= 0x0002,
2219 NETIF_MSG_LINK
= 0x0004,
2220 NETIF_MSG_TIMER
= 0x0008,
2221 NETIF_MSG_IFDOWN
= 0x0010,
2222 NETIF_MSG_IFUP
= 0x0020,
2223 NETIF_MSG_RX_ERR
= 0x0040,
2224 NETIF_MSG_TX_ERR
= 0x0080,
2225 NETIF_MSG_TX_QUEUED
= 0x0100,
2226 NETIF_MSG_INTR
= 0x0200,
2227 NETIF_MSG_TX_DONE
= 0x0400,
2228 NETIF_MSG_RX_STATUS
= 0x0800,
2229 NETIF_MSG_PKTDATA
= 0x1000,
2230 NETIF_MSG_HW
= 0x2000,
2231 NETIF_MSG_WOL
= 0x4000,
2234 #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
2235 #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
2236 #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
2237 #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
2238 #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
2239 #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
2240 #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
2241 #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
2242 #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
2243 #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
2244 #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
2245 #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
2246 #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
2247 #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
2248 #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
2250 static inline u32
netif_msg_init(int debug_value
, int default_msg_enable_bits
)
2253 if (debug_value
< 0 || debug_value
>= (sizeof(u32
) * 8))
2254 return default_msg_enable_bits
;
2255 if (debug_value
== 0) /* no output */
2257 /* set low N bits */
2258 return (1 << debug_value
) - 1;
2261 static inline void __netif_tx_lock(struct netdev_queue
*txq
, int cpu
)
2263 spin_lock(&txq
->_xmit_lock
);
2264 txq
->xmit_lock_owner
= cpu
;
2267 static inline void __netif_tx_lock_bh(struct netdev_queue
*txq
)
2269 spin_lock_bh(&txq
->_xmit_lock
);
2270 txq
->xmit_lock_owner
= smp_processor_id();
2273 static inline int __netif_tx_trylock(struct netdev_queue
*txq
)
2275 int ok
= spin_trylock(&txq
->_xmit_lock
);
2277 txq
->xmit_lock_owner
= smp_processor_id();
2281 static inline void __netif_tx_unlock(struct netdev_queue
*txq
)
2283 txq
->xmit_lock_owner
= -1;
2284 spin_unlock(&txq
->_xmit_lock
);
2287 static inline void __netif_tx_unlock_bh(struct netdev_queue
*txq
)
2289 txq
->xmit_lock_owner
= -1;
2290 spin_unlock_bh(&txq
->_xmit_lock
);
2293 static inline void txq_trans_update(struct netdev_queue
*txq
)
2295 if (txq
->xmit_lock_owner
!= -1)
2296 txq
->trans_start
= jiffies
;
2300 * netif_tx_lock - grab network device transmit lock
2301 * @dev: network device
2303 * Get network device transmit lock
2305 static inline void netif_tx_lock(struct net_device
*dev
)
2310 spin_lock(&dev
->tx_global_lock
);
2311 cpu
= smp_processor_id();
2312 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
2313 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
2315 /* We are the only thread of execution doing a
2316 * freeze, but we have to grab the _xmit_lock in
2317 * order to synchronize with threads which are in
2318 * the ->hard_start_xmit() handler and already
2319 * checked the frozen bit.
2321 __netif_tx_lock(txq
, cpu
);
2322 set_bit(__QUEUE_STATE_FROZEN
, &txq
->state
);
2323 __netif_tx_unlock(txq
);
2327 static inline void netif_tx_lock_bh(struct net_device
*dev
)
2333 static inline void netif_tx_unlock(struct net_device
*dev
)
2337 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
2338 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
2340 /* No need to grab the _xmit_lock here. If the
2341 * queue is not stopped for another reason, we
2344 clear_bit(__QUEUE_STATE_FROZEN
, &txq
->state
);
2345 netif_schedule_queue(txq
);
2347 spin_unlock(&dev
->tx_global_lock
);
2350 static inline void netif_tx_unlock_bh(struct net_device
*dev
)
2352 netif_tx_unlock(dev
);
2356 #define HARD_TX_LOCK(dev, txq, cpu) { \
2357 if ((dev->features & NETIF_F_LLTX) == 0) { \
2358 __netif_tx_lock(txq, cpu); \
2362 #define HARD_TX_UNLOCK(dev, txq) { \
2363 if ((dev->features & NETIF_F_LLTX) == 0) { \
2364 __netif_tx_unlock(txq); \
2368 static inline void netif_tx_disable(struct net_device
*dev
)
2374 cpu
= smp_processor_id();
2375 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
2376 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
2378 __netif_tx_lock(txq
, cpu
);
2379 netif_tx_stop_queue(txq
);
2380 __netif_tx_unlock(txq
);
2385 static inline void netif_addr_lock(struct net_device
*dev
)
2387 spin_lock(&dev
->addr_list_lock
);
2390 static inline void netif_addr_lock_bh(struct net_device
*dev
)
2392 spin_lock_bh(&dev
->addr_list_lock
);
2395 static inline void netif_addr_unlock(struct net_device
*dev
)
2397 spin_unlock(&dev
->addr_list_lock
);
2400 static inline void netif_addr_unlock_bh(struct net_device
*dev
)
2402 spin_unlock_bh(&dev
->addr_list_lock
);
2406 * dev_addrs walker. Should be used only for read access. Call with
2407 * rcu_read_lock held.
2409 #define for_each_dev_addr(dev, ha) \
2410 list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list)
2412 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
2414 extern void ether_setup(struct net_device
*dev
);
2416 /* Support for loadable net-drivers */
2417 extern struct net_device
*alloc_netdev_mqs(int sizeof_priv
, const char *name
,
2418 void (*setup
)(struct net_device
*),
2419 unsigned int txqs
, unsigned int rxqs
);
2420 #define alloc_netdev(sizeof_priv, name, setup) \
2421 alloc_netdev_mqs(sizeof_priv, name, setup, 1, 1)
2423 #define alloc_netdev_mq(sizeof_priv, name, setup, count) \
2424 alloc_netdev_mqs(sizeof_priv, name, setup, count, count)
2426 extern int register_netdev(struct net_device
*dev
);
2427 extern void unregister_netdev(struct net_device
*dev
);
2429 /* General hardware address lists handling functions */
2430 extern int __hw_addr_add_multiple(struct netdev_hw_addr_list
*to_list
,
2431 struct netdev_hw_addr_list
*from_list
,
2432 int addr_len
, unsigned char addr_type
);
2433 extern void __hw_addr_del_multiple(struct netdev_hw_addr_list
*to_list
,
2434 struct netdev_hw_addr_list
*from_list
,
2435 int addr_len
, unsigned char addr_type
);
2436 extern int __hw_addr_sync(struct netdev_hw_addr_list
*to_list
,
2437 struct netdev_hw_addr_list
*from_list
,
2439 extern void __hw_addr_unsync(struct netdev_hw_addr_list
*to_list
,
2440 struct netdev_hw_addr_list
*from_list
,
2442 extern void __hw_addr_flush(struct netdev_hw_addr_list
*list
);
2443 extern void __hw_addr_init(struct netdev_hw_addr_list
*list
);
2445 /* Functions used for device addresses handling */
2446 extern int dev_addr_add(struct net_device
*dev
, unsigned char *addr
,
2447 unsigned char addr_type
);
2448 extern int dev_addr_del(struct net_device
*dev
, unsigned char *addr
,
2449 unsigned char addr_type
);
2450 extern int dev_addr_add_multiple(struct net_device
*to_dev
,
2451 struct net_device
*from_dev
,
2452 unsigned char addr_type
);
2453 extern int dev_addr_del_multiple(struct net_device
*to_dev
,
2454 struct net_device
*from_dev
,
2455 unsigned char addr_type
);
2456 extern void dev_addr_flush(struct net_device
*dev
);
2457 extern int dev_addr_init(struct net_device
*dev
);
2459 /* Functions used for unicast addresses handling */
2460 extern int dev_uc_add(struct net_device
*dev
, unsigned char *addr
);
2461 extern int dev_uc_del(struct net_device
*dev
, unsigned char *addr
);
2462 extern int dev_uc_sync(struct net_device
*to
, struct net_device
*from
);
2463 extern void dev_uc_unsync(struct net_device
*to
, struct net_device
*from
);
2464 extern void dev_uc_flush(struct net_device
*dev
);
2465 extern void dev_uc_init(struct net_device
*dev
);
2467 /* Functions used for multicast addresses handling */
2468 extern int dev_mc_add(struct net_device
*dev
, unsigned char *addr
);
2469 extern int dev_mc_add_global(struct net_device
*dev
, unsigned char *addr
);
2470 extern int dev_mc_del(struct net_device
*dev
, unsigned char *addr
);
2471 extern int dev_mc_del_global(struct net_device
*dev
, unsigned char *addr
);
2472 extern int dev_mc_sync(struct net_device
*to
, struct net_device
*from
);
2473 extern void dev_mc_unsync(struct net_device
*to
, struct net_device
*from
);
2474 extern void dev_mc_flush(struct net_device
*dev
);
2475 extern void dev_mc_init(struct net_device
*dev
);
2477 /* Functions used for secondary unicast and multicast support */
2478 extern void dev_set_rx_mode(struct net_device
*dev
);
2479 extern void __dev_set_rx_mode(struct net_device
*dev
);
2480 extern int dev_set_promiscuity(struct net_device
*dev
, int inc
);
2481 extern int dev_set_allmulti(struct net_device
*dev
, int inc
);
2482 extern void netdev_state_change(struct net_device
*dev
);
2483 extern int netdev_bonding_change(struct net_device
*dev
,
2484 unsigned long event
);
2485 extern void netdev_features_change(struct net_device
*dev
);
2486 /* Load a device via the kmod */
2487 extern void dev_load(struct net
*net
, const char *name
);
2488 extern void dev_mcast_init(void);
2489 extern struct rtnl_link_stats64
*dev_get_stats(struct net_device
*dev
,
2490 struct rtnl_link_stats64
*storage
);
2492 extern int netdev_max_backlog
;
2493 extern int netdev_tstamp_prequeue
;
2494 extern int weight_p
;
2495 extern int bpf_jit_enable
;
2496 extern int netdev_set_master(struct net_device
*dev
, struct net_device
*master
);
2497 extern int netdev_set_bond_master(struct net_device
*dev
,
2498 struct net_device
*master
);
2499 extern int skb_checksum_help(struct sk_buff
*skb
);
2500 extern struct sk_buff
*skb_gso_segment(struct sk_buff
*skb
, u32 features
);
2502 extern void netdev_rx_csum_fault(struct net_device
*dev
);
2504 static inline void netdev_rx_csum_fault(struct net_device
*dev
)
2508 /* rx skb timestamps */
2509 extern void net_enable_timestamp(void);
2510 extern void net_disable_timestamp(void);
2512 #ifdef CONFIG_PROC_FS
2513 extern void *dev_seq_start(struct seq_file
*seq
, loff_t
*pos
);
2514 extern void *dev_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
);
2515 extern void dev_seq_stop(struct seq_file
*seq
, void *v
);
2518 extern int netdev_class_create_file(struct class_attribute
*class_attr
);
2519 extern void netdev_class_remove_file(struct class_attribute
*class_attr
);
2521 extern struct kobj_ns_type_operations net_ns_type_operations
;
2523 extern const char *netdev_drivername(const struct net_device
*dev
);
2525 extern void linkwatch_run_queue(void);
2527 static inline u32
netdev_get_wanted_features(struct net_device
*dev
)
2529 return (dev
->features
& ~dev
->hw_features
) | dev
->wanted_features
;
2531 u32
netdev_increment_features(u32 all
, u32 one
, u32 mask
);
2532 int __netdev_update_features(struct net_device
*dev
);
2533 void netdev_update_features(struct net_device
*dev
);
2534 void netdev_change_features(struct net_device
*dev
);
2536 void netif_stacked_transfer_operstate(const struct net_device
*rootdev
,
2537 struct net_device
*dev
);
2539 u32
netif_skb_features(struct sk_buff
*skb
);
2541 static inline int net_gso_ok(u32 features
, int gso_type
)
2543 int feature
= gso_type
<< NETIF_F_GSO_SHIFT
;
2544 return (features
& feature
) == feature
;
2547 static inline int skb_gso_ok(struct sk_buff
*skb
, u32 features
)
2549 return net_gso_ok(features
, skb_shinfo(skb
)->gso_type
) &&
2550 (!skb_has_frag_list(skb
) || (features
& NETIF_F_FRAGLIST
));
2553 static inline int netif_needs_gso(struct sk_buff
*skb
, int features
)
2555 return skb_is_gso(skb
) && (!skb_gso_ok(skb
, features
) ||
2556 unlikely(skb
->ip_summed
!= CHECKSUM_PARTIAL
));
2559 static inline void netif_set_gso_max_size(struct net_device
*dev
,
2562 dev
->gso_max_size
= size
;
2565 static inline int netif_is_bond_slave(struct net_device
*dev
)
2567 return dev
->flags
& IFF_SLAVE
&& dev
->priv_flags
& IFF_BONDING
;
2570 extern struct pernet_operations __net_initdata loopback_net_ops
;
2572 int dev_ethtool_get_settings(struct net_device
*dev
,
2573 struct ethtool_cmd
*cmd
);
2575 static inline u32
dev_ethtool_get_rx_csum(struct net_device
*dev
)
2577 if (dev
->features
& NETIF_F_RXCSUM
)
2579 if (!dev
->ethtool_ops
|| !dev
->ethtool_ops
->get_rx_csum
)
2581 return dev
->ethtool_ops
->get_rx_csum(dev
);
2584 static inline u32
dev_ethtool_get_flags(struct net_device
*dev
)
2586 if (!dev
->ethtool_ops
|| !dev
->ethtool_ops
->get_flags
)
2588 return dev
->ethtool_ops
->get_flags(dev
);
2591 /* Logging, debugging and troubleshooting/diagnostic helpers. */
2593 /* netdev_printk helpers, similar to dev_printk */
2595 static inline const char *netdev_name(const struct net_device
*dev
)
2597 if (dev
->reg_state
!= NETREG_REGISTERED
)
2598 return "(unregistered net_device)";
2602 extern int netdev_printk(const char *level
, const struct net_device
*dev
,
2603 const char *format
, ...)
2604 __attribute__ ((format (printf
, 3, 4)));
2605 extern int netdev_emerg(const struct net_device
*dev
, const char *format
, ...)
2606 __attribute__ ((format (printf
, 2, 3)));
2607 extern int netdev_alert(const struct net_device
*dev
, const char *format
, ...)
2608 __attribute__ ((format (printf
, 2, 3)));
2609 extern int netdev_crit(const struct net_device
*dev
, const char *format
, ...)
2610 __attribute__ ((format (printf
, 2, 3)));
2611 extern int netdev_err(const struct net_device
*dev
, const char *format
, ...)
2612 __attribute__ ((format (printf
, 2, 3)));
2613 extern int netdev_warn(const struct net_device
*dev
, const char *format
, ...)
2614 __attribute__ ((format (printf
, 2, 3)));
2615 extern int netdev_notice(const struct net_device
*dev
, const char *format
, ...)
2616 __attribute__ ((format (printf
, 2, 3)));
2617 extern int netdev_info(const struct net_device
*dev
, const char *format
, ...)
2618 __attribute__ ((format (printf
, 2, 3)));
2620 #define MODULE_ALIAS_NETDEV(device) \
2621 MODULE_ALIAS("netdev-" device)
2624 #define netdev_dbg(__dev, format, args...) \
2625 netdev_printk(KERN_DEBUG, __dev, format, ##args)
2626 #elif defined(CONFIG_DYNAMIC_DEBUG)
2627 #define netdev_dbg(__dev, format, args...) \
2629 dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \
2630 netdev_name(__dev), ##args); \
2633 #define netdev_dbg(__dev, format, args...) \
2636 netdev_printk(KERN_DEBUG, __dev, format, ##args); \
2641 #if defined(VERBOSE_DEBUG)
2642 #define netdev_vdbg netdev_dbg
2645 #define netdev_vdbg(dev, format, args...) \
2648 netdev_printk(KERN_DEBUG, dev, format, ##args); \
2654 * netdev_WARN() acts like dev_printk(), but with the key difference
2655 * of using a WARN/WARN_ON to get the message out, including the
2656 * file/line information and a backtrace.
2658 #define netdev_WARN(dev, format, args...) \
2659 WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args);
2661 /* netif printk helpers, similar to netdev_printk */
2663 #define netif_printk(priv, type, level, dev, fmt, args...) \
2665 if (netif_msg_##type(priv)) \
2666 netdev_printk(level, (dev), fmt, ##args); \
2669 #define netif_level(level, priv, type, dev, fmt, args...) \
2671 if (netif_msg_##type(priv)) \
2672 netdev_##level(dev, fmt, ##args); \
2675 #define netif_emerg(priv, type, dev, fmt, args...) \
2676 netif_level(emerg, priv, type, dev, fmt, ##args)
2677 #define netif_alert(priv, type, dev, fmt, args...) \
2678 netif_level(alert, priv, type, dev, fmt, ##args)
2679 #define netif_crit(priv, type, dev, fmt, args...) \
2680 netif_level(crit, priv, type, dev, fmt, ##args)
2681 #define netif_err(priv, type, dev, fmt, args...) \
2682 netif_level(err, priv, type, dev, fmt, ##args)
2683 #define netif_warn(priv, type, dev, fmt, args...) \
2684 netif_level(warn, priv, type, dev, fmt, ##args)
2685 #define netif_notice(priv, type, dev, fmt, args...) \
2686 netif_level(notice, priv, type, dev, fmt, ##args)
2687 #define netif_info(priv, type, dev, fmt, args...) \
2688 netif_level(info, priv, type, dev, fmt, ##args)
2691 #define netif_dbg(priv, type, dev, format, args...) \
2692 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args)
2693 #elif defined(CONFIG_DYNAMIC_DEBUG)
2694 #define netif_dbg(priv, type, netdev, format, args...) \
2696 if (netif_msg_##type(priv)) \
2697 dynamic_dev_dbg((netdev)->dev.parent, \
2699 netdev_name(netdev), ##args); \
2702 #define netif_dbg(priv, type, dev, format, args...) \
2705 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
2710 #if defined(VERBOSE_DEBUG)
2711 #define netif_vdbg netif_dbg
2713 #define netif_vdbg(priv, type, dev, format, args...) \
2716 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
2721 #endif /* __KERNEL__ */
2723 #endif /* _LINUX_NETDEVICE_H */