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>
38 #include <asm/atomic.h>
39 #include <asm/cache.h>
40 #include <asm/byteorder.h>
42 #include <linux/device.h>
43 #include <linux/percpu.h>
44 #include <linux/rculist.h>
45 #include <linux/dmaengine.h>
46 #include <linux/workqueue.h>
48 #include <linux/ethtool.h>
49 #include <net/net_namespace.h>
52 #include <net/dcbnl.h>
60 /* source back-compat hooks */
61 #define SET_ETHTOOL_OPS(netdev,ops) \
62 ( (netdev)->ethtool_ops = (ops) )
64 #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev
65 functions are available. */
66 #define HAVE_FREE_NETDEV /* free_netdev() */
67 #define HAVE_NETDEV_PRIV /* netdev_priv() */
69 /* hardware address assignment types */
70 #define NET_ADDR_PERM 0 /* address is permanent (default) */
71 #define NET_ADDR_RANDOM 1 /* address is generated randomly */
72 #define NET_ADDR_STOLEN 2 /* address is stolen from other device */
74 /* Backlog congestion levels */
75 #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
76 #define NET_RX_DROP 1 /* packet dropped */
79 * Transmit return codes: transmit return codes originate from three different
82 * - qdisc return codes
83 * - driver transmit return codes
86 * Drivers are allowed to return any one of those in their hard_start_xmit()
87 * function. Real network devices commonly used with qdiscs should only return
88 * the driver transmit return codes though - when qdiscs are used, the actual
89 * transmission happens asynchronously, so the value is not propagated to
90 * higher layers. Virtual network devices transmit synchronously, in this case
91 * the driver transmit return codes are consumed by dev_queue_xmit(), all
92 * others are propagated to higher layers.
95 /* qdisc ->enqueue() return codes. */
96 #define NET_XMIT_SUCCESS 0x00
97 #define NET_XMIT_DROP 0x01 /* skb dropped */
98 #define NET_XMIT_CN 0x02 /* congestion notification */
99 #define NET_XMIT_POLICED 0x03 /* skb is shot by police */
100 #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */
102 /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
103 * indicates that the device will soon be dropping packets, or already drops
104 * some packets of the same priority; prompting us to send less aggressively. */
105 #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e))
106 #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
108 /* Driver transmit return codes */
109 #define NETDEV_TX_MASK 0xf0
112 __NETDEV_TX_MIN
= INT_MIN
, /* make sure enum is signed */
113 NETDEV_TX_OK
= 0x00, /* driver took care of packet */
114 NETDEV_TX_BUSY
= 0x10, /* driver tx path was busy*/
115 NETDEV_TX_LOCKED
= 0x20, /* driver tx lock was already taken */
117 typedef enum netdev_tx netdev_tx_t
;
120 * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant;
121 * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed.
123 static inline bool dev_xmit_complete(int rc
)
126 * Positive cases with an skb consumed by a driver:
127 * - successful transmission (rc == NETDEV_TX_OK)
128 * - error while transmitting (rc < 0)
129 * - error while queueing to a different device (rc & NET_XMIT_MASK)
131 if (likely(rc
< NET_XMIT_MASK
))
139 #define MAX_ADDR_LEN 32 /* Largest hardware address length */
141 /* Initial net device group. All devices belong to group 0 by default. */
142 #define INIT_NETDEV_GROUP 0
146 * Compute the worst case header length according to the protocols
150 #if defined(CONFIG_WLAN) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
151 # if defined(CONFIG_MAC80211_MESH)
152 # define LL_MAX_HEADER 128
154 # define LL_MAX_HEADER 96
156 #elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE)
157 # define LL_MAX_HEADER 48
159 # define LL_MAX_HEADER 32
162 #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
163 !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \
164 !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
165 !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
166 #define MAX_HEADER LL_MAX_HEADER
168 #define MAX_HEADER (LL_MAX_HEADER + 48)
172 * Old network device statistics. Fields are native words
173 * (unsigned long) so they can be read and written atomically.
176 struct net_device_stats
{
177 unsigned long rx_packets
;
178 unsigned long tx_packets
;
179 unsigned long rx_bytes
;
180 unsigned long tx_bytes
;
181 unsigned long rx_errors
;
182 unsigned long tx_errors
;
183 unsigned long rx_dropped
;
184 unsigned long tx_dropped
;
185 unsigned long multicast
;
186 unsigned long collisions
;
187 unsigned long rx_length_errors
;
188 unsigned long rx_over_errors
;
189 unsigned long rx_crc_errors
;
190 unsigned long rx_frame_errors
;
191 unsigned long rx_fifo_errors
;
192 unsigned long rx_missed_errors
;
193 unsigned long tx_aborted_errors
;
194 unsigned long tx_carrier_errors
;
195 unsigned long tx_fifo_errors
;
196 unsigned long tx_heartbeat_errors
;
197 unsigned long tx_window_errors
;
198 unsigned long rx_compressed
;
199 unsigned long tx_compressed
;
202 #endif /* __KERNEL__ */
205 /* Media selection options. */
218 #include <linux/cache.h>
219 #include <linux/skbuff.h>
225 struct netdev_hw_addr
{
226 struct list_head list
;
227 unsigned char addr
[MAX_ADDR_LEN
];
229 #define NETDEV_HW_ADDR_T_LAN 1
230 #define NETDEV_HW_ADDR_T_SAN 2
231 #define NETDEV_HW_ADDR_T_SLAVE 3
232 #define NETDEV_HW_ADDR_T_UNICAST 4
233 #define NETDEV_HW_ADDR_T_MULTICAST 5
237 struct rcu_head rcu_head
;
240 struct netdev_hw_addr_list
{
241 struct list_head list
;
245 #define netdev_hw_addr_list_count(l) ((l)->count)
246 #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0)
247 #define netdev_hw_addr_list_for_each(ha, l) \
248 list_for_each_entry(ha, &(l)->list, list)
250 #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc)
251 #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc)
252 #define netdev_for_each_uc_addr(ha, dev) \
253 netdev_hw_addr_list_for_each(ha, &(dev)->uc)
255 #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc)
256 #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc)
257 #define netdev_for_each_mc_addr(ha, dev) \
258 netdev_hw_addr_list_for_each(ha, &(dev)->mc)
261 struct hh_cache
*hh_next
; /* Next entry */
262 atomic_t hh_refcnt
; /* number of users */
264 * We want hh_output, hh_len, hh_lock and hh_data be a in a separate
266 * They are mostly read, but hh_refcnt may be changed quite frequently,
267 * incurring cache line ping pongs.
269 __be16 hh_type ____cacheline_aligned_in_smp
;
270 /* protocol identifier, f.e ETH_P_IP
271 * NOTE: For VLANs, this will be the
272 * encapuslated type. --BLG
274 u16 hh_len
; /* length of header */
275 int (*hh_output
)(struct sk_buff
*skb
);
278 /* cached hardware header; allow for machine alignment needs. */
279 #define HH_DATA_MOD 16
280 #define HH_DATA_OFF(__len) \
281 (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
282 #define HH_DATA_ALIGN(__len) \
283 (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
284 unsigned long hh_data
[HH_DATA_ALIGN(LL_MAX_HEADER
) / sizeof(long)];
287 static inline void hh_cache_put(struct hh_cache
*hh
)
289 if (atomic_dec_and_test(&hh
->hh_refcnt
))
293 /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
295 * dev->hard_header_len ? (dev->hard_header_len +
296 * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
298 * We could use other alignment values, but we must maintain the
299 * relationship HH alignment <= LL alignment.
301 * LL_ALLOCATED_SPACE also takes into account the tailroom the device
304 #define LL_RESERVED_SPACE(dev) \
305 ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
306 #define LL_RESERVED_SPACE_EXTRA(dev,extra) \
307 ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
308 #define LL_ALLOCATED_SPACE(dev) \
309 ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
312 int (*create
) (struct sk_buff
*skb
, struct net_device
*dev
,
313 unsigned short type
, const void *daddr
,
314 const void *saddr
, unsigned len
);
315 int (*parse
)(const struct sk_buff
*skb
, unsigned char *haddr
);
316 int (*rebuild
)(struct sk_buff
*skb
);
317 #define HAVE_HEADER_CACHE
318 int (*cache
)(const struct neighbour
*neigh
, struct hh_cache
*hh
);
319 void (*cache_update
)(struct hh_cache
*hh
,
320 const struct net_device
*dev
,
321 const unsigned char *haddr
);
324 /* These flag bits are private to the generic network queueing
325 * layer, they may not be explicitly referenced by any other
329 enum netdev_state_t
{
331 __LINK_STATE_PRESENT
,
332 __LINK_STATE_NOCARRIER
,
333 __LINK_STATE_LINKWATCH_PENDING
,
334 __LINK_STATE_DORMANT
,
339 * This structure holds at boot time configured netdevice settings. They
340 * are then used in the device probing.
342 struct netdev_boot_setup
{
346 #define NETDEV_BOOT_SETUP_MAX 8
348 extern int __init
netdev_boot_setup(char *str
);
351 * Structure for NAPI scheduling similar to tasklet but with weighting
354 /* The poll_list must only be managed by the entity which
355 * changes the state of the NAPI_STATE_SCHED bit. This means
356 * whoever atomically sets that bit can add this napi_struct
357 * to the per-cpu poll_list, and whoever clears that bit
358 * can remove from the list right before clearing the bit.
360 struct list_head poll_list
;
364 int (*poll
)(struct napi_struct
*, int);
365 #ifdef CONFIG_NETPOLL
366 spinlock_t poll_lock
;
370 unsigned int gro_count
;
372 struct net_device
*dev
;
373 struct list_head dev_list
;
374 struct sk_buff
*gro_list
;
379 NAPI_STATE_SCHED
, /* Poll is scheduled */
380 NAPI_STATE_DISABLE
, /* Disable pending */
381 NAPI_STATE_NPSVC
, /* Netpoll - don't dequeue from poll_list */
391 typedef enum gro_result gro_result_t
;
394 * enum rx_handler_result - Possible return values for rx_handlers.
395 * @RX_HANDLER_CONSUMED: skb was consumed by rx_handler, do not process it
397 * @RX_HANDLER_ANOTHER: Do another round in receive path. This is indicated in
398 * case skb->dev was changed by rx_handler.
399 * @RX_HANDLER_EXACT: Force exact delivery, no wildcard.
400 * @RX_HANDLER_PASS: Do nothing, passe the skb as if no rx_handler was called.
402 * rx_handlers are functions called from inside __netif_receive_skb(), to do
403 * special processing of the skb, prior to delivery to protocol handlers.
405 * Currently, a net_device can only have a single rx_handler registered. Trying
406 * to register a second rx_handler will return -EBUSY.
408 * To register a rx_handler on a net_device, use netdev_rx_handler_register().
409 * To unregister a rx_handler on a net_device, use
410 * netdev_rx_handler_unregister().
412 * Upon return, rx_handler is expected to tell __netif_receive_skb() what to
415 * If the rx_handler consumed to skb in some way, it should return
416 * RX_HANDLER_CONSUMED. This is appropriate when the rx_handler arranged for
417 * the skb to be delivered in some other ways.
419 * If the rx_handler changed skb->dev, to divert the skb to another
420 * net_device, it should return RX_HANDLER_ANOTHER. The rx_handler for the
421 * new device will be called if it exists.
423 * If the rx_handler consider the skb should be ignored, it should return
424 * RX_HANDLER_EXACT. The skb will only be delivered to protocol handlers that
425 * are registred on exact device (ptype->dev == skb->dev).
427 * If the rx_handler didn't changed skb->dev, but want the skb to be normally
428 * delivered, it should return RX_HANDLER_PASS.
430 * A device without a registered rx_handler will behave as if rx_handler
431 * returned RX_HANDLER_PASS.
434 enum rx_handler_result
{
440 typedef enum rx_handler_result rx_handler_result_t
;
441 typedef rx_handler_result_t
rx_handler_func_t(struct sk_buff
**pskb
);
443 extern void __napi_schedule(struct napi_struct
*n
);
445 static inline int napi_disable_pending(struct napi_struct
*n
)
447 return test_bit(NAPI_STATE_DISABLE
, &n
->state
);
451 * napi_schedule_prep - check if napi can be scheduled
454 * Test if NAPI routine is already running, and if not mark
455 * it as running. This is used as a condition variable
456 * insure only one NAPI poll instance runs. We also make
457 * sure there is no pending NAPI disable.
459 static inline int napi_schedule_prep(struct napi_struct
*n
)
461 return !napi_disable_pending(n
) &&
462 !test_and_set_bit(NAPI_STATE_SCHED
, &n
->state
);
466 * napi_schedule - schedule NAPI poll
469 * Schedule NAPI poll routine to be called if it is not already
472 static inline void napi_schedule(struct napi_struct
*n
)
474 if (napi_schedule_prep(n
))
478 /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */
479 static inline int napi_reschedule(struct napi_struct
*napi
)
481 if (napi_schedule_prep(napi
)) {
482 __napi_schedule(napi
);
489 * napi_complete - NAPI processing complete
492 * Mark NAPI processing as complete.
494 extern void __napi_complete(struct napi_struct
*n
);
495 extern void napi_complete(struct napi_struct
*n
);
498 * napi_disable - prevent NAPI from scheduling
501 * Stop NAPI from being scheduled on this context.
502 * Waits till any outstanding processing completes.
504 static inline void napi_disable(struct napi_struct
*n
)
506 set_bit(NAPI_STATE_DISABLE
, &n
->state
);
507 while (test_and_set_bit(NAPI_STATE_SCHED
, &n
->state
))
509 clear_bit(NAPI_STATE_DISABLE
, &n
->state
);
513 * napi_enable - enable NAPI scheduling
516 * Resume NAPI from being scheduled on this context.
517 * Must be paired with napi_disable.
519 static inline void napi_enable(struct napi_struct
*n
)
521 BUG_ON(!test_bit(NAPI_STATE_SCHED
, &n
->state
));
522 smp_mb__before_clear_bit();
523 clear_bit(NAPI_STATE_SCHED
, &n
->state
);
528 * napi_synchronize - wait until NAPI is not running
531 * Wait until NAPI is done being scheduled on this context.
532 * Waits till any outstanding processing completes but
533 * does not disable future activations.
535 static inline void napi_synchronize(const struct napi_struct
*n
)
537 while (test_bit(NAPI_STATE_SCHED
, &n
->state
))
541 # define napi_synchronize(n) barrier()
544 enum netdev_queue_state_t
{
546 __QUEUE_STATE_FROZEN
,
547 #define QUEUE_STATE_XOFF_OR_FROZEN ((1 << __QUEUE_STATE_XOFF) | \
548 (1 << __QUEUE_STATE_FROZEN))
551 struct netdev_queue
{
555 struct net_device
*dev
;
558 struct Qdisc
*qdisc_sleeping
;
562 #if defined(CONFIG_XPS) && defined(CONFIG_NUMA)
568 spinlock_t _xmit_lock ____cacheline_aligned_in_smp
;
571 * please use this field instead of dev->trans_start
573 unsigned long trans_start
;
574 } ____cacheline_aligned_in_smp
;
576 static inline int netdev_queue_numa_node_read(const struct netdev_queue
*q
)
578 #if defined(CONFIG_XPS) && defined(CONFIG_NUMA)
585 static inline void netdev_queue_numa_node_write(struct netdev_queue
*q
, int node
)
587 #if defined(CONFIG_XPS) && defined(CONFIG_NUMA)
594 * This structure holds an RPS map which can be of variable length. The
595 * map is an array of CPUs.
602 #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16)))
605 * The rps_dev_flow structure contains the mapping of a flow to a CPU, the
606 * tail pointer for that CPU's input queue at the time of last enqueue, and
607 * a hardware filter index.
609 struct rps_dev_flow
{
612 unsigned int last_qtail
;
614 #define RPS_NO_FILTER 0xffff
617 * The rps_dev_flow_table structure contains a table of flow mappings.
619 struct rps_dev_flow_table
{
622 struct work_struct free_work
;
623 struct rps_dev_flow flows
[0];
625 #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \
626 (_num * sizeof(struct rps_dev_flow)))
629 * The rps_sock_flow_table contains mappings of flows to the last CPU
630 * on which they were processed by the application (set in recvmsg).
632 struct rps_sock_flow_table
{
636 #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_sock_flow_table) + \
637 (_num * sizeof(u16)))
639 #define RPS_NO_CPU 0xffff
641 static inline void rps_record_sock_flow(struct rps_sock_flow_table
*table
,
645 unsigned int cpu
, index
= hash
& table
->mask
;
647 /* We only give a hint, preemption can change cpu under us */
648 cpu
= raw_smp_processor_id();
650 if (table
->ents
[index
] != cpu
)
651 table
->ents
[index
] = cpu
;
655 static inline void rps_reset_sock_flow(struct rps_sock_flow_table
*table
,
659 table
->ents
[hash
& table
->mask
] = RPS_NO_CPU
;
662 extern struct rps_sock_flow_table __rcu
*rps_sock_flow_table
;
664 #ifdef CONFIG_RFS_ACCEL
665 extern bool rps_may_expire_flow(struct net_device
*dev
, u16 rxq_index
,
666 u32 flow_id
, u16 filter_id
);
669 /* This structure contains an instance of an RX queue. */
670 struct netdev_rx_queue
{
671 struct rps_map __rcu
*rps_map
;
672 struct rps_dev_flow_table __rcu
*rps_flow_table
;
674 struct net_device
*dev
;
675 } ____cacheline_aligned_in_smp
;
676 #endif /* CONFIG_RPS */
680 * This structure holds an XPS map which can be of variable length. The
681 * map is an array of queues.
685 unsigned int alloc_len
;
689 #define XPS_MAP_SIZE(_num) (sizeof(struct xps_map) + (_num * sizeof(u16)))
690 #define XPS_MIN_MAP_ALLOC ((L1_CACHE_BYTES - sizeof(struct xps_map)) \
694 * This structure holds all XPS maps for device. Maps are indexed by CPU.
696 struct xps_dev_maps
{
698 struct xps_map __rcu
*cpu_map
[0];
700 #define XPS_DEV_MAPS_SIZE (sizeof(struct xps_dev_maps) + \
701 (nr_cpu_ids * sizeof(struct xps_map *)))
702 #endif /* CONFIG_XPS */
704 #define TC_MAX_QUEUE 16
705 #define TC_BITMASK 15
706 /* HW offloaded queuing disciplines txq count and offset maps */
707 struct netdev_tc_txq
{
713 * This structure defines the management hooks for network devices.
714 * The following hooks can be defined; unless noted otherwise, they are
715 * optional and can be filled with a null pointer.
717 * int (*ndo_init)(struct net_device *dev);
718 * This function is called once when network device is registered.
719 * The network device can use this to any late stage initializaton
720 * or semantic validattion. It can fail with an error code which will
721 * be propogated back to register_netdev
723 * void (*ndo_uninit)(struct net_device *dev);
724 * This function is called when device is unregistered or when registration
725 * fails. It is not called if init fails.
727 * int (*ndo_open)(struct net_device *dev);
728 * This function is called when network device transistions to the up
731 * int (*ndo_stop)(struct net_device *dev);
732 * This function is called when network device transistions to the down
735 * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb,
736 * struct net_device *dev);
737 * Called when a packet needs to be transmitted.
738 * Must return NETDEV_TX_OK , NETDEV_TX_BUSY.
739 * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX)
740 * Required can not be NULL.
742 * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb);
743 * Called to decide which queue to when device supports multiple
746 * void (*ndo_change_rx_flags)(struct net_device *dev, int flags);
747 * This function is called to allow device receiver to make
748 * changes to configuration when multicast or promiscious is enabled.
750 * void (*ndo_set_rx_mode)(struct net_device *dev);
751 * This function is called device changes address list filtering.
753 * void (*ndo_set_multicast_list)(struct net_device *dev);
754 * This function is called when the multicast address list changes.
756 * int (*ndo_set_mac_address)(struct net_device *dev, void *addr);
757 * This function is called when the Media Access Control address
758 * needs to be changed. If this interface is not defined, the
759 * mac address can not be changed.
761 * int (*ndo_validate_addr)(struct net_device *dev);
762 * Test if Media Access Control address is valid for the device.
764 * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
765 * Called when a user request an ioctl which can't be handled by
766 * the generic interface code. If not defined ioctl's return
767 * not supported error code.
769 * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map);
770 * Used to set network devices bus interface parameters. This interface
771 * is retained for legacy reason, new devices should use the bus
772 * interface (PCI) for low level management.
774 * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu);
775 * Called when a user wants to change the Maximum Transfer Unit
776 * of a device. If not defined, any request to change MTU will
777 * will return an error.
779 * void (*ndo_tx_timeout)(struct net_device *dev);
780 * Callback uses when the transmitter has not made any progress
781 * for dev->watchdog ticks.
783 * struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev,
784 * struct rtnl_link_stats64 *storage);
785 * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
786 * Called when a user wants to get the network device usage
787 * statistics. Drivers must do one of the following:
788 * 1. Define @ndo_get_stats64 to fill in a zero-initialised
789 * rtnl_link_stats64 structure passed by the caller.
790 * 2. Define @ndo_get_stats to update a net_device_stats structure
791 * (which should normally be dev->stats) and return a pointer to
792 * it. The structure may be changed asynchronously only if each
793 * field is written atomically.
794 * 3. Update dev->stats asynchronously and atomically, and define
797 * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp);
798 * If device support VLAN receive acceleration
799 * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called
800 * when vlan groups for the device changes. Note: grp is NULL
801 * if no vlan's groups are being used.
803 * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid);
804 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
805 * this function is called when a VLAN id is registered.
807 * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid);
808 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
809 * this function is called when a VLAN id is unregistered.
811 * void (*ndo_poll_controller)(struct net_device *dev);
813 * SR-IOV management functions.
814 * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac);
815 * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos);
816 * int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate);
817 * int (*ndo_get_vf_config)(struct net_device *dev,
818 * int vf, struct ifla_vf_info *ivf);
819 * int (*ndo_set_vf_port)(struct net_device *dev, int vf,
820 * struct nlattr *port[]);
821 * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb);
822 * int (*ndo_setup_tc)(struct net_device *dev, u8 tc)
823 * Called to setup 'tc' number of traffic classes in the net device. This
824 * is always called from the stack with the rtnl lock held and netif tx
825 * queues stopped. This allows the netdevice to perform queue management
828 * Fiber Channel over Ethernet (FCoE) offload functions.
829 * int (*ndo_fcoe_enable)(struct net_device *dev);
830 * Called when the FCoE protocol stack wants to start using LLD for FCoE
831 * so the underlying device can perform whatever needed configuration or
832 * initialization to support acceleration of FCoE traffic.
834 * int (*ndo_fcoe_disable)(struct net_device *dev);
835 * Called when the FCoE protocol stack wants to stop using LLD for FCoE
836 * so the underlying device can perform whatever needed clean-ups to
837 * stop supporting acceleration of FCoE traffic.
839 * int (*ndo_fcoe_ddp_setup)(struct net_device *dev, u16 xid,
840 * struct scatterlist *sgl, unsigned int sgc);
841 * Called when the FCoE Initiator wants to initialize an I/O that
842 * is a possible candidate for Direct Data Placement (DDP). The LLD can
843 * perform necessary setup and returns 1 to indicate the device is set up
844 * successfully to perform DDP on this I/O, otherwise this returns 0.
846 * int (*ndo_fcoe_ddp_done)(struct net_device *dev, u16 xid);
847 * Called when the FCoE Initiator/Target is done with the DDPed I/O as
848 * indicated by the FC exchange id 'xid', so the underlying device can
849 * clean up and reuse resources for later DDP requests.
851 * int (*ndo_fcoe_ddp_target)(struct net_device *dev, u16 xid,
852 * struct scatterlist *sgl, unsigned int sgc);
853 * Called when the FCoE Target wants to initialize an I/O that
854 * is a possible candidate for Direct Data Placement (DDP). The LLD can
855 * perform necessary setup and returns 1 to indicate the device is set up
856 * successfully to perform DDP on this I/O, otherwise this returns 0.
858 * int (*ndo_fcoe_get_wwn)(struct net_device *dev, u64 *wwn, int type);
859 * Called when the underlying device wants to override default World Wide
860 * Name (WWN) generation mechanism in FCoE protocol stack to pass its own
861 * World Wide Port Name (WWPN) or World Wide Node Name (WWNN) to the FCoE
862 * protocol stack to use.
865 * int (*ndo_rx_flow_steer)(struct net_device *dev, const struct sk_buff *skb,
866 * u16 rxq_index, u32 flow_id);
867 * Set hardware filter for RFS. rxq_index is the target queue index;
868 * flow_id is a flow ID to be passed to rps_may_expire_flow() later.
869 * Return the filter ID on success, or a negative error code.
871 * Slave management functions (for bridge, bonding, etc). User should
872 * call netdev_set_master() to set dev->master properly.
873 * int (*ndo_add_slave)(struct net_device *dev, struct net_device *slave_dev);
874 * Called to make another netdev an underling.
876 * int (*ndo_del_slave)(struct net_device *dev, struct net_device *slave_dev);
877 * Called to release previously enslaved netdev.
879 * Feature/offload setting functions.
880 * u32 (*ndo_fix_features)(struct net_device *dev, u32 features);
881 * Adjusts the requested feature flags according to device-specific
882 * constraints, and returns the resulting flags. Must not modify
885 * int (*ndo_set_features)(struct net_device *dev, u32 features);
886 * Called to update device configuration to new features. Passed
887 * feature set might be less than what was returned by ndo_fix_features()).
888 * Must return >0 or -errno if it changed dev->features itself.
891 #define HAVE_NET_DEVICE_OPS
892 struct net_device_ops
{
893 int (*ndo_init
)(struct net_device
*dev
);
894 void (*ndo_uninit
)(struct net_device
*dev
);
895 int (*ndo_open
)(struct net_device
*dev
);
896 int (*ndo_stop
)(struct net_device
*dev
);
897 netdev_tx_t (*ndo_start_xmit
) (struct sk_buff
*skb
,
898 struct net_device
*dev
);
899 u16 (*ndo_select_queue
)(struct net_device
*dev
,
900 struct sk_buff
*skb
);
901 void (*ndo_change_rx_flags
)(struct net_device
*dev
,
903 void (*ndo_set_rx_mode
)(struct net_device
*dev
);
904 void (*ndo_set_multicast_list
)(struct net_device
*dev
);
905 int (*ndo_set_mac_address
)(struct net_device
*dev
,
907 int (*ndo_validate_addr
)(struct net_device
*dev
);
908 int (*ndo_do_ioctl
)(struct net_device
*dev
,
909 struct ifreq
*ifr
, int cmd
);
910 int (*ndo_set_config
)(struct net_device
*dev
,
912 int (*ndo_change_mtu
)(struct net_device
*dev
,
914 int (*ndo_neigh_setup
)(struct net_device
*dev
,
915 struct neigh_parms
*);
916 void (*ndo_tx_timeout
) (struct net_device
*dev
);
918 struct rtnl_link_stats64
* (*ndo_get_stats64
)(struct net_device
*dev
,
919 struct rtnl_link_stats64
*storage
);
920 struct net_device_stats
* (*ndo_get_stats
)(struct net_device
*dev
);
922 void (*ndo_vlan_rx_register
)(struct net_device
*dev
,
923 struct vlan_group
*grp
);
924 void (*ndo_vlan_rx_add_vid
)(struct net_device
*dev
,
926 void (*ndo_vlan_rx_kill_vid
)(struct net_device
*dev
,
928 #ifdef CONFIG_NET_POLL_CONTROLLER
929 void (*ndo_poll_controller
)(struct net_device
*dev
);
930 int (*ndo_netpoll_setup
)(struct net_device
*dev
,
931 struct netpoll_info
*info
);
932 void (*ndo_netpoll_cleanup
)(struct net_device
*dev
);
934 int (*ndo_set_vf_mac
)(struct net_device
*dev
,
936 int (*ndo_set_vf_vlan
)(struct net_device
*dev
,
937 int queue
, u16 vlan
, u8 qos
);
938 int (*ndo_set_vf_tx_rate
)(struct net_device
*dev
,
940 int (*ndo_get_vf_config
)(struct net_device
*dev
,
942 struct ifla_vf_info
*ivf
);
943 int (*ndo_set_vf_port
)(struct net_device
*dev
,
945 struct nlattr
*port
[]);
946 int (*ndo_get_vf_port
)(struct net_device
*dev
,
947 int vf
, struct sk_buff
*skb
);
948 int (*ndo_setup_tc
)(struct net_device
*dev
, u8 tc
);
949 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
950 int (*ndo_fcoe_enable
)(struct net_device
*dev
);
951 int (*ndo_fcoe_disable
)(struct net_device
*dev
);
952 int (*ndo_fcoe_ddp_setup
)(struct net_device
*dev
,
954 struct scatterlist
*sgl
,
956 int (*ndo_fcoe_ddp_done
)(struct net_device
*dev
,
958 int (*ndo_fcoe_ddp_target
)(struct net_device
*dev
,
960 struct scatterlist
*sgl
,
962 #define NETDEV_FCOE_WWNN 0
963 #define NETDEV_FCOE_WWPN 1
964 int (*ndo_fcoe_get_wwn
)(struct net_device
*dev
,
967 #ifdef CONFIG_RFS_ACCEL
968 int (*ndo_rx_flow_steer
)(struct net_device
*dev
,
969 const struct sk_buff
*skb
,
973 int (*ndo_add_slave
)(struct net_device
*dev
,
974 struct net_device
*slave_dev
);
975 int (*ndo_del_slave
)(struct net_device
*dev
,
976 struct net_device
*slave_dev
);
977 u32 (*ndo_fix_features
)(struct net_device
*dev
,
979 int (*ndo_set_features
)(struct net_device
*dev
,
984 * The DEVICE structure.
985 * Actually, this whole structure is a big mistake. It mixes I/O
986 * data with strictly "high-level" data, and it has to know about
987 * almost every data structure used in the INET module.
989 * FIXME: cleanup struct net_device such that network protocol info
996 * This is the first field of the "visible" part of this structure
997 * (i.e. as seen by users in the "Space.c" file). It is the name
1000 char name
[IFNAMSIZ
];
1002 struct pm_qos_request_list pm_qos_req
;
1004 /* device name hash chain */
1005 struct hlist_node name_hlist
;
1010 * I/O specific fields
1011 * FIXME: Merge these and struct ifmap into one
1013 unsigned long mem_end
; /* shared mem end */
1014 unsigned long mem_start
; /* shared mem start */
1015 unsigned long base_addr
; /* device I/O address */
1016 unsigned int irq
; /* device IRQ number */
1019 * Some hardware also needs these fields, but they are not
1020 * part of the usual set specified in Space.c.
1023 unsigned char if_port
; /* Selectable AUI, TP,..*/
1024 unsigned char dma
; /* DMA channel */
1026 unsigned long state
;
1028 struct list_head dev_list
;
1029 struct list_head napi_list
;
1030 struct list_head unreg_list
;
1032 /* currently active device features */
1034 /* user-changeable features */
1036 /* user-requested features */
1037 u32 wanted_features
;
1038 /* mask of features inheritable by VLAN devices */
1041 /* Net device feature bits; if you change something,
1042 * also update netdev_features_strings[] in ethtool.c */
1044 #define NETIF_F_SG 1 /* Scatter/gather IO. */
1045 #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
1046 #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
1047 #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
1048 #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
1049 #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
1050 #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
1051 #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
1052 #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
1053 #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
1054 #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
1055 #define NETIF_F_GSO 2048 /* Enable software GSO. */
1056 #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
1057 /* do not use LLTX in new drivers */
1058 #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
1059 #define NETIF_F_GRO 16384 /* Generic receive offload */
1060 #define NETIF_F_LRO 32768 /* large receive offload */
1062 /* the GSO_MASK reserves bits 16 through 23 */
1063 #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */
1064 #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */
1065 #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
1066 #define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */
1067 #define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */
1068 #define NETIF_F_RXCSUM (1 << 29) /* Receive checksumming offload */
1069 #define NETIF_F_NOCACHE_COPY (1 << 30) /* Use no-cache copyfromuser */
1071 /* Segmentation offload features */
1072 #define NETIF_F_GSO_SHIFT 16
1073 #define NETIF_F_GSO_MASK 0x00ff0000
1074 #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
1075 #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
1076 #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
1077 #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
1078 #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
1079 #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT)
1081 /* Features valid for ethtool to change */
1082 /* = all defined minus driver/device-class-related */
1083 #define NETIF_F_NEVER_CHANGE (NETIF_F_HIGHDMA | NETIF_F_VLAN_CHALLENGED | \
1084 NETIF_F_LLTX | NETIF_F_NETNS_LOCAL)
1085 #define NETIF_F_ETHTOOL_BITS (0x7f3fffff & ~NETIF_F_NEVER_CHANGE)
1087 /* List of features with software fallbacks. */
1088 #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \
1089 NETIF_F_TSO6 | NETIF_F_UFO)
1092 #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
1093 #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
1094 #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
1095 #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
1097 #define NETIF_F_ALL_TSO (NETIF_F_TSO | NETIF_F_TSO6 | NETIF_F_TSO_ECN)
1099 #define NETIF_F_ALL_TX_OFFLOADS (NETIF_F_ALL_CSUM | NETIF_F_SG | \
1100 NETIF_F_FRAGLIST | NETIF_F_ALL_TSO | \
1101 NETIF_F_SCTP_CSUM | NETIF_F_FCOE_CRC)
1104 * If one device supports one of these features, then enable them
1105 * for all in netdev_increment_features.
1107 #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
1108 NETIF_F_SG | NETIF_F_HIGHDMA | \
1111 /* changeable features with no special hardware requirements */
1112 #define NETIF_F_SOFT_FEATURES (NETIF_F_GSO | NETIF_F_GRO)
1114 /* Interface index. Unique device identifier */
1118 struct net_device_stats stats
;
1119 atomic_long_t rx_dropped
; /* dropped packets by core network
1120 * Do not use this in drivers.
1123 #ifdef CONFIG_WIRELESS_EXT
1124 /* List of functions to handle Wireless Extensions (instead of ioctl).
1125 * See <net/iw_handler.h> for details. Jean II */
1126 const struct iw_handler_def
* wireless_handlers
;
1127 /* Instance data managed by the core of Wireless Extensions. */
1128 struct iw_public_data
* wireless_data
;
1130 /* Management operations */
1131 const struct net_device_ops
*netdev_ops
;
1132 const struct ethtool_ops
*ethtool_ops
;
1134 /* Hardware header description */
1135 const struct header_ops
*header_ops
;
1137 unsigned int flags
; /* interface flags (a la BSD) */
1138 unsigned short gflags
;
1139 unsigned int priv_flags
; /* Like 'flags' but invisible to userspace. */
1140 unsigned short padded
; /* How much padding added by alloc_netdev() */
1142 unsigned char operstate
; /* RFC2863 operstate */
1143 unsigned char link_mode
; /* mapping policy to operstate */
1145 unsigned int mtu
; /* interface MTU value */
1146 unsigned short type
; /* interface hardware type */
1147 unsigned short hard_header_len
; /* hardware hdr length */
1149 /* extra head- and tailroom the hardware may need, but not in all cases
1150 * can this be guaranteed, especially tailroom. Some cases also use
1151 * LL_MAX_HEADER instead to allocate the skb.
1153 unsigned short needed_headroom
;
1154 unsigned short needed_tailroom
;
1156 /* Interface address info. */
1157 unsigned char perm_addr
[MAX_ADDR_LEN
]; /* permanent hw address */
1158 unsigned char addr_assign_type
; /* hw address assignment type */
1159 unsigned char addr_len
; /* hardware address length */
1160 unsigned short dev_id
; /* for shared network cards */
1162 spinlock_t addr_list_lock
;
1163 struct netdev_hw_addr_list uc
; /* Unicast mac addresses */
1164 struct netdev_hw_addr_list mc
; /* Multicast mac addresses */
1166 unsigned int promiscuity
;
1167 unsigned int allmulti
;
1170 /* Protocol specific pointers */
1172 #if defined(CONFIG_VLAN_8021Q) || defined(CONFIG_VLAN_8021Q_MODULE)
1173 struct vlan_group __rcu
*vlgrp
; /* VLAN group */
1175 #ifdef CONFIG_NET_DSA
1176 void *dsa_ptr
; /* dsa specific data */
1178 void *atalk_ptr
; /* AppleTalk link */
1179 struct in_device __rcu
*ip_ptr
; /* IPv4 specific data */
1180 struct dn_dev __rcu
*dn_ptr
; /* DECnet specific data */
1181 struct inet6_dev __rcu
*ip6_ptr
; /* IPv6 specific data */
1182 void *ec_ptr
; /* Econet specific data */
1183 void *ax25_ptr
; /* AX.25 specific data */
1184 struct wireless_dev
*ieee80211_ptr
; /* IEEE 802.11 specific data,
1185 assign before registering */
1188 * Cache lines mostly used on receive path (including eth_type_trans())
1190 unsigned long last_rx
; /* Time of last Rx
1191 * This should not be set in
1192 * drivers, unless really needed,
1193 * because network stack (bonding)
1194 * use it if/when necessary, to
1195 * avoid dirtying this cache line.
1198 struct net_device
*master
; /* Pointer to master device of a group,
1199 * which this device is member of.
1202 /* Interface address info used in eth_type_trans() */
1203 unsigned char *dev_addr
; /* hw address, (before bcast
1204 because most packets are
1207 struct netdev_hw_addr_list dev_addrs
; /* list of device
1210 unsigned char broadcast
[MAX_ADDR_LEN
]; /* hw bcast add */
1213 struct kset
*queues_kset
;
1215 struct netdev_rx_queue
*_rx
;
1217 /* Number of RX queues allocated at register_netdev() time */
1218 unsigned int num_rx_queues
;
1220 /* Number of RX queues currently active in device */
1221 unsigned int real_num_rx_queues
;
1223 #ifdef CONFIG_RFS_ACCEL
1224 /* CPU reverse-mapping for RX completion interrupts, indexed
1225 * by RX queue number. Assigned by driver. This must only be
1226 * set if the ndo_rx_flow_steer operation is defined. */
1227 struct cpu_rmap
*rx_cpu_rmap
;
1231 rx_handler_func_t __rcu
*rx_handler
;
1232 void __rcu
*rx_handler_data
;
1234 struct netdev_queue __rcu
*ingress_queue
;
1237 * Cache lines mostly used on transmit path
1239 struct netdev_queue
*_tx ____cacheline_aligned_in_smp
;
1241 /* Number of TX queues allocated at alloc_netdev_mq() time */
1242 unsigned int num_tx_queues
;
1244 /* Number of TX queues currently active in device */
1245 unsigned int real_num_tx_queues
;
1247 /* root qdisc from userspace point of view */
1248 struct Qdisc
*qdisc
;
1250 unsigned long tx_queue_len
; /* Max frames per queue allowed */
1251 spinlock_t tx_global_lock
;
1254 struct xps_dev_maps __rcu
*xps_maps
;
1257 /* These may be needed for future network-power-down code. */
1260 * trans_start here is expensive for high speed devices on SMP,
1261 * please use netdev_queue->trans_start instead.
1263 unsigned long trans_start
; /* Time (in jiffies) of last Tx */
1265 int watchdog_timeo
; /* used by dev_watchdog() */
1266 struct timer_list watchdog_timer
;
1268 /* Number of references to this device */
1269 int __percpu
*pcpu_refcnt
;
1271 /* delayed register/unregister */
1272 struct list_head todo_list
;
1273 /* device index hash chain */
1274 struct hlist_node index_hlist
;
1276 struct list_head link_watch_list
;
1278 /* register/unregister state machine */
1279 enum { NETREG_UNINITIALIZED
=0,
1280 NETREG_REGISTERED
, /* completed register_netdevice */
1281 NETREG_UNREGISTERING
, /* called unregister_netdevice */
1282 NETREG_UNREGISTERED
, /* completed unregister todo */
1283 NETREG_RELEASED
, /* called free_netdev */
1284 NETREG_DUMMY
, /* dummy device for NAPI poll */
1288 RTNL_LINK_INITIALIZED
,
1289 RTNL_LINK_INITIALIZING
,
1290 } rtnl_link_state
:16;
1292 /* Called from unregister, can be used to call free_netdev */
1293 void (*destructor
)(struct net_device
*dev
);
1295 #ifdef CONFIG_NETPOLL
1296 struct netpoll_info
*npinfo
;
1299 #ifdef CONFIG_NET_NS
1300 /* Network namespace this network device is inside */
1304 /* mid-layer private */
1307 struct pcpu_lstats __percpu
*lstats
; /* loopback stats */
1308 struct pcpu_tstats __percpu
*tstats
; /* tunnel stats */
1309 struct pcpu_dstats __percpu
*dstats
; /* dummy stats */
1312 struct garp_port __rcu
*garp_port
;
1314 /* class/net/name entry */
1316 /* space for optional device, statistics, and wireless sysfs groups */
1317 const struct attribute_group
*sysfs_groups
[4];
1319 /* rtnetlink link ops */
1320 const struct rtnl_link_ops
*rtnl_link_ops
;
1322 /* for setting kernel sock attribute on TCP connection setup */
1323 #define GSO_MAX_SIZE 65536
1324 unsigned int gso_max_size
;
1327 /* Data Center Bridging netlink ops */
1328 const struct dcbnl_rtnl_ops
*dcbnl_ops
;
1331 struct netdev_tc_txq tc_to_txq
[TC_MAX_QUEUE
];
1332 u8 prio_tc_map
[TC_BITMASK
+ 1];
1334 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
1335 /* max exchange id for FCoE LRO by ddp */
1336 unsigned int fcoe_ddp_xid
;
1338 /* n-tuple filter list attached to this device */
1339 struct ethtool_rx_ntuple_list ethtool_ntuple_list
;
1341 /* phy device may attach itself for hardware timestamping */
1342 struct phy_device
*phydev
;
1344 /* group the device belongs to */
1347 #define to_net_dev(d) container_of(d, struct net_device, dev)
1349 #define NETDEV_ALIGN 32
1352 int netdev_get_prio_tc_map(const struct net_device
*dev
, u32 prio
)
1354 return dev
->prio_tc_map
[prio
& TC_BITMASK
];
1358 int netdev_set_prio_tc_map(struct net_device
*dev
, u8 prio
, u8 tc
)
1360 if (tc
>= dev
->num_tc
)
1363 dev
->prio_tc_map
[prio
& TC_BITMASK
] = tc
& TC_BITMASK
;
1368 void netdev_reset_tc(struct net_device
*dev
)
1371 memset(dev
->tc_to_txq
, 0, sizeof(dev
->tc_to_txq
));
1372 memset(dev
->prio_tc_map
, 0, sizeof(dev
->prio_tc_map
));
1376 int netdev_set_tc_queue(struct net_device
*dev
, u8 tc
, u16 count
, u16 offset
)
1378 if (tc
>= dev
->num_tc
)
1381 dev
->tc_to_txq
[tc
].count
= count
;
1382 dev
->tc_to_txq
[tc
].offset
= offset
;
1387 int netdev_set_num_tc(struct net_device
*dev
, u8 num_tc
)
1389 if (num_tc
> TC_MAX_QUEUE
)
1392 dev
->num_tc
= num_tc
;
1397 int netdev_get_num_tc(struct net_device
*dev
)
1403 struct netdev_queue
*netdev_get_tx_queue(const struct net_device
*dev
,
1406 return &dev
->_tx
[index
];
1409 static inline void netdev_for_each_tx_queue(struct net_device
*dev
,
1410 void (*f
)(struct net_device
*,
1411 struct netdev_queue
*,
1417 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
1418 f(dev
, &dev
->_tx
[i
], arg
);
1422 * Net namespace inlines
1425 struct net
*dev_net(const struct net_device
*dev
)
1427 return read_pnet(&dev
->nd_net
);
1431 void dev_net_set(struct net_device
*dev
, struct net
*net
)
1433 #ifdef CONFIG_NET_NS
1434 release_net(dev
->nd_net
);
1435 dev
->nd_net
= hold_net(net
);
1439 static inline bool netdev_uses_dsa_tags(struct net_device
*dev
)
1441 #ifdef CONFIG_NET_DSA_TAG_DSA
1442 if (dev
->dsa_ptr
!= NULL
)
1443 return dsa_uses_dsa_tags(dev
->dsa_ptr
);
1449 #ifndef CONFIG_NET_NS
1450 static inline void skb_set_dev(struct sk_buff
*skb
, struct net_device
*dev
)
1454 #else /* CONFIG_NET_NS */
1455 void skb_set_dev(struct sk_buff
*skb
, struct net_device
*dev
);
1458 static inline bool netdev_uses_trailer_tags(struct net_device
*dev
)
1460 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1461 if (dev
->dsa_ptr
!= NULL
)
1462 return dsa_uses_trailer_tags(dev
->dsa_ptr
);
1469 * netdev_priv - access network device private data
1470 * @dev: network device
1472 * Get network device private data
1474 static inline void *netdev_priv(const struct net_device
*dev
)
1476 return (char *)dev
+ ALIGN(sizeof(struct net_device
), NETDEV_ALIGN
);
1479 /* Set the sysfs physical device reference for the network logical device
1480 * if set prior to registration will cause a symlink during initialization.
1482 #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
1484 /* Set the sysfs device type for the network logical device to allow
1485 * fin grained indentification of different network device types. For
1486 * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc.
1488 #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype))
1491 * netif_napi_add - initialize a napi context
1492 * @dev: network device
1493 * @napi: napi context
1494 * @poll: polling function
1495 * @weight: default weight
1497 * netif_napi_add() must be used to initialize a napi context prior to calling
1498 * *any* of the other napi related functions.
1500 void netif_napi_add(struct net_device
*dev
, struct napi_struct
*napi
,
1501 int (*poll
)(struct napi_struct
*, int), int weight
);
1504 * netif_napi_del - remove a napi context
1505 * @napi: napi context
1507 * netif_napi_del() removes a napi context from the network device napi list
1509 void netif_napi_del(struct napi_struct
*napi
);
1511 struct napi_gro_cb
{
1512 /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
1515 /* Length of frag0. */
1516 unsigned int frag0_len
;
1518 /* This indicates where we are processing relative to skb->data. */
1521 /* This is non-zero if the packet may be of the same flow. */
1524 /* This is non-zero if the packet cannot be merged with the new skb. */
1527 /* Number of segments aggregated. */
1534 #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
1536 struct packet_type
{
1537 __be16 type
; /* This is really htons(ether_type). */
1538 struct net_device
*dev
; /* NULL is wildcarded here */
1539 int (*func
) (struct sk_buff
*,
1540 struct net_device
*,
1541 struct packet_type
*,
1542 struct net_device
*);
1543 struct sk_buff
*(*gso_segment
)(struct sk_buff
*skb
,
1545 int (*gso_send_check
)(struct sk_buff
*skb
);
1546 struct sk_buff
**(*gro_receive
)(struct sk_buff
**head
,
1547 struct sk_buff
*skb
);
1548 int (*gro_complete
)(struct sk_buff
*skb
);
1549 void *af_packet_priv
;
1550 struct list_head list
;
1553 #include <linux/interrupt.h>
1554 #include <linux/notifier.h>
1556 extern rwlock_t dev_base_lock
; /* Device list lock */
1559 #define for_each_netdev(net, d) \
1560 list_for_each_entry(d, &(net)->dev_base_head, dev_list)
1561 #define for_each_netdev_reverse(net, d) \
1562 list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list)
1563 #define for_each_netdev_rcu(net, d) \
1564 list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list)
1565 #define for_each_netdev_safe(net, d, n) \
1566 list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
1567 #define for_each_netdev_continue(net, d) \
1568 list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
1569 #define for_each_netdev_continue_rcu(net, d) \
1570 list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list)
1571 #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
1573 static inline struct net_device
*next_net_device(struct net_device
*dev
)
1575 struct list_head
*lh
;
1579 lh
= dev
->dev_list
.next
;
1580 return lh
== &net
->dev_base_head
? NULL
: net_device_entry(lh
);
1583 static inline struct net_device
*next_net_device_rcu(struct net_device
*dev
)
1585 struct list_head
*lh
;
1589 lh
= rcu_dereference(list_next_rcu(&dev
->dev_list
));
1590 return lh
== &net
->dev_base_head
? NULL
: net_device_entry(lh
);
1593 static inline struct net_device
*first_net_device(struct net
*net
)
1595 return list_empty(&net
->dev_base_head
) ? NULL
:
1596 net_device_entry(net
->dev_base_head
.next
);
1599 static inline struct net_device
*first_net_device_rcu(struct net
*net
)
1601 struct list_head
*lh
= rcu_dereference(list_next_rcu(&net
->dev_base_head
));
1603 return lh
== &net
->dev_base_head
? NULL
: net_device_entry(lh
);
1606 extern int netdev_boot_setup_check(struct net_device
*dev
);
1607 extern unsigned long netdev_boot_base(const char *prefix
, int unit
);
1608 extern struct net_device
*dev_getbyhwaddr_rcu(struct net
*net
, unsigned short type
,
1609 const char *hwaddr
);
1610 extern struct net_device
*dev_getfirstbyhwtype(struct net
*net
, unsigned short type
);
1611 extern struct net_device
*__dev_getfirstbyhwtype(struct net
*net
, unsigned short type
);
1612 extern void dev_add_pack(struct packet_type
*pt
);
1613 extern void dev_remove_pack(struct packet_type
*pt
);
1614 extern void __dev_remove_pack(struct packet_type
*pt
);
1616 extern struct net_device
*dev_get_by_flags_rcu(struct net
*net
, unsigned short flags
,
1617 unsigned short mask
);
1618 extern struct net_device
*dev_get_by_name(struct net
*net
, const char *name
);
1619 extern struct net_device
*dev_get_by_name_rcu(struct net
*net
, const char *name
);
1620 extern struct net_device
*__dev_get_by_name(struct net
*net
, const char *name
);
1621 extern int dev_alloc_name(struct net_device
*dev
, const char *name
);
1622 extern int dev_open(struct net_device
*dev
);
1623 extern int dev_close(struct net_device
*dev
);
1624 extern void dev_disable_lro(struct net_device
*dev
);
1625 extern int dev_queue_xmit(struct sk_buff
*skb
);
1626 extern int register_netdevice(struct net_device
*dev
);
1627 extern void unregister_netdevice_queue(struct net_device
*dev
,
1628 struct list_head
*head
);
1629 extern void unregister_netdevice_many(struct list_head
*head
);
1630 static inline void unregister_netdevice(struct net_device
*dev
)
1632 unregister_netdevice_queue(dev
, NULL
);
1635 extern int netdev_refcnt_read(const struct net_device
*dev
);
1636 extern void free_netdev(struct net_device
*dev
);
1637 extern void synchronize_net(void);
1638 extern int register_netdevice_notifier(struct notifier_block
*nb
);
1639 extern int unregister_netdevice_notifier(struct notifier_block
*nb
);
1640 extern int init_dummy_netdev(struct net_device
*dev
);
1641 extern void netdev_resync_ops(struct net_device
*dev
);
1643 extern int call_netdevice_notifiers(unsigned long val
, struct net_device
*dev
);
1644 extern struct net_device
*dev_get_by_index(struct net
*net
, int ifindex
);
1645 extern struct net_device
*__dev_get_by_index(struct net
*net
, int ifindex
);
1646 extern struct net_device
*dev_get_by_index_rcu(struct net
*net
, int ifindex
);
1647 extern int dev_restart(struct net_device
*dev
);
1648 #ifdef CONFIG_NETPOLL_TRAP
1649 extern int netpoll_trap(void);
1651 extern int skb_gro_receive(struct sk_buff
**head
,
1652 struct sk_buff
*skb
);
1653 extern void skb_gro_reset_offset(struct sk_buff
*skb
);
1655 static inline unsigned int skb_gro_offset(const struct sk_buff
*skb
)
1657 return NAPI_GRO_CB(skb
)->data_offset
;
1660 static inline unsigned int skb_gro_len(const struct sk_buff
*skb
)
1662 return skb
->len
- NAPI_GRO_CB(skb
)->data_offset
;
1665 static inline void skb_gro_pull(struct sk_buff
*skb
, unsigned int len
)
1667 NAPI_GRO_CB(skb
)->data_offset
+= len
;
1670 static inline void *skb_gro_header_fast(struct sk_buff
*skb
,
1671 unsigned int offset
)
1673 return NAPI_GRO_CB(skb
)->frag0
+ offset
;
1676 static inline int skb_gro_header_hard(struct sk_buff
*skb
, unsigned int hlen
)
1678 return NAPI_GRO_CB(skb
)->frag0_len
< hlen
;
1681 static inline void *skb_gro_header_slow(struct sk_buff
*skb
, unsigned int hlen
,
1682 unsigned int offset
)
1684 NAPI_GRO_CB(skb
)->frag0
= NULL
;
1685 NAPI_GRO_CB(skb
)->frag0_len
= 0;
1686 return pskb_may_pull(skb
, hlen
) ? skb
->data
+ offset
: NULL
;
1689 static inline void *skb_gro_mac_header(struct sk_buff
*skb
)
1691 return NAPI_GRO_CB(skb
)->frag0
?: skb_mac_header(skb
);
1694 static inline void *skb_gro_network_header(struct sk_buff
*skb
)
1696 return (NAPI_GRO_CB(skb
)->frag0
?: skb
->data
) +
1697 skb_network_offset(skb
);
1700 static inline int dev_hard_header(struct sk_buff
*skb
, struct net_device
*dev
,
1701 unsigned short type
,
1702 const void *daddr
, const void *saddr
,
1705 if (!dev
->header_ops
|| !dev
->header_ops
->create
)
1708 return dev
->header_ops
->create(skb
, dev
, type
, daddr
, saddr
, len
);
1711 static inline int dev_parse_header(const struct sk_buff
*skb
,
1712 unsigned char *haddr
)
1714 const struct net_device
*dev
= skb
->dev
;
1716 if (!dev
->header_ops
|| !dev
->header_ops
->parse
)
1718 return dev
->header_ops
->parse(skb
, haddr
);
1721 typedef int gifconf_func_t(struct net_device
* dev
, char __user
* bufptr
, int len
);
1722 extern int register_gifconf(unsigned int family
, gifconf_func_t
* gifconf
);
1723 static inline int unregister_gifconf(unsigned int family
)
1725 return register_gifconf(family
, NULL
);
1729 * Incoming packets are placed on per-cpu queues
1731 struct softnet_data
{
1732 struct Qdisc
*output_queue
;
1733 struct Qdisc
**output_queue_tailp
;
1734 struct list_head poll_list
;
1735 struct sk_buff
*completion_queue
;
1736 struct sk_buff_head process_queue
;
1739 unsigned int processed
;
1740 unsigned int time_squeeze
;
1741 unsigned int cpu_collision
;
1742 unsigned int received_rps
;
1745 struct softnet_data
*rps_ipi_list
;
1747 /* Elements below can be accessed between CPUs for RPS */
1748 struct call_single_data csd ____cacheline_aligned_in_smp
;
1749 struct softnet_data
*rps_ipi_next
;
1751 unsigned int input_queue_head
;
1752 unsigned int input_queue_tail
;
1755 struct sk_buff_head input_pkt_queue
;
1756 struct napi_struct backlog
;
1759 static inline void input_queue_head_incr(struct softnet_data
*sd
)
1762 sd
->input_queue_head
++;
1766 static inline void input_queue_tail_incr_save(struct softnet_data
*sd
,
1767 unsigned int *qtail
)
1770 *qtail
= ++sd
->input_queue_tail
;
1774 DECLARE_PER_CPU_ALIGNED(struct softnet_data
, softnet_data
);
1776 #define HAVE_NETIF_QUEUE
1778 extern void __netif_schedule(struct Qdisc
*q
);
1780 static inline void netif_schedule_queue(struct netdev_queue
*txq
)
1782 if (!test_bit(__QUEUE_STATE_XOFF
, &txq
->state
))
1783 __netif_schedule(txq
->qdisc
);
1786 static inline void netif_tx_schedule_all(struct net_device
*dev
)
1790 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
1791 netif_schedule_queue(netdev_get_tx_queue(dev
, i
));
1794 static inline void netif_tx_start_queue(struct netdev_queue
*dev_queue
)
1796 clear_bit(__QUEUE_STATE_XOFF
, &dev_queue
->state
);
1800 * netif_start_queue - allow transmit
1801 * @dev: network device
1803 * Allow upper layers to call the device hard_start_xmit routine.
1805 static inline void netif_start_queue(struct net_device
*dev
)
1807 netif_tx_start_queue(netdev_get_tx_queue(dev
, 0));
1810 static inline void netif_tx_start_all_queues(struct net_device
*dev
)
1814 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
1815 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
1816 netif_tx_start_queue(txq
);
1820 static inline void netif_tx_wake_queue(struct netdev_queue
*dev_queue
)
1822 #ifdef CONFIG_NETPOLL_TRAP
1823 if (netpoll_trap()) {
1824 netif_tx_start_queue(dev_queue
);
1828 if (test_and_clear_bit(__QUEUE_STATE_XOFF
, &dev_queue
->state
))
1829 __netif_schedule(dev_queue
->qdisc
);
1833 * netif_wake_queue - restart transmit
1834 * @dev: network device
1836 * Allow upper layers to call the device hard_start_xmit routine.
1837 * Used for flow control when transmit resources are available.
1839 static inline void netif_wake_queue(struct net_device
*dev
)
1841 netif_tx_wake_queue(netdev_get_tx_queue(dev
, 0));
1844 static inline void netif_tx_wake_all_queues(struct net_device
*dev
)
1848 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
1849 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
1850 netif_tx_wake_queue(txq
);
1854 static inline void netif_tx_stop_queue(struct netdev_queue
*dev_queue
)
1856 if (WARN_ON(!dev_queue
)) {
1857 pr_info("netif_stop_queue() cannot be called before register_netdev()\n");
1860 set_bit(__QUEUE_STATE_XOFF
, &dev_queue
->state
);
1864 * netif_stop_queue - stop transmitted packets
1865 * @dev: network device
1867 * Stop upper layers calling the device hard_start_xmit routine.
1868 * Used for flow control when transmit resources are unavailable.
1870 static inline void netif_stop_queue(struct net_device
*dev
)
1872 netif_tx_stop_queue(netdev_get_tx_queue(dev
, 0));
1875 static inline void netif_tx_stop_all_queues(struct net_device
*dev
)
1879 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
1880 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
1881 netif_tx_stop_queue(txq
);
1885 static inline int netif_tx_queue_stopped(const struct netdev_queue
*dev_queue
)
1887 return test_bit(__QUEUE_STATE_XOFF
, &dev_queue
->state
);
1891 * netif_queue_stopped - test if transmit queue is flowblocked
1892 * @dev: network device
1894 * Test if transmit queue on device is currently unable to send.
1896 static inline int netif_queue_stopped(const struct net_device
*dev
)
1898 return netif_tx_queue_stopped(netdev_get_tx_queue(dev
, 0));
1901 static inline int netif_tx_queue_frozen_or_stopped(const struct netdev_queue
*dev_queue
)
1903 return dev_queue
->state
& QUEUE_STATE_XOFF_OR_FROZEN
;
1907 * netif_running - test if up
1908 * @dev: network device
1910 * Test if the device has been brought up.
1912 static inline int netif_running(const struct net_device
*dev
)
1914 return test_bit(__LINK_STATE_START
, &dev
->state
);
1918 * Routines to manage the subqueues on a device. We only need start
1919 * stop, and a check if it's stopped. All other device management is
1920 * done at the overall netdevice level.
1921 * Also test the device if we're multiqueue.
1925 * netif_start_subqueue - allow sending packets on subqueue
1926 * @dev: network device
1927 * @queue_index: sub queue index
1929 * Start individual transmit queue of a device with multiple transmit queues.
1931 static inline void netif_start_subqueue(struct net_device
*dev
, u16 queue_index
)
1933 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, queue_index
);
1935 netif_tx_start_queue(txq
);
1939 * netif_stop_subqueue - stop sending packets on subqueue
1940 * @dev: network device
1941 * @queue_index: sub queue index
1943 * Stop individual transmit queue of a device with multiple transmit queues.
1945 static inline void netif_stop_subqueue(struct net_device
*dev
, u16 queue_index
)
1947 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, queue_index
);
1948 #ifdef CONFIG_NETPOLL_TRAP
1952 netif_tx_stop_queue(txq
);
1956 * netif_subqueue_stopped - test status of subqueue
1957 * @dev: network device
1958 * @queue_index: sub queue index
1960 * Check individual transmit queue of a device with multiple transmit queues.
1962 static inline int __netif_subqueue_stopped(const struct net_device
*dev
,
1965 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, queue_index
);
1967 return netif_tx_queue_stopped(txq
);
1970 static inline int netif_subqueue_stopped(const struct net_device
*dev
,
1971 struct sk_buff
*skb
)
1973 return __netif_subqueue_stopped(dev
, skb_get_queue_mapping(skb
));
1977 * netif_wake_subqueue - allow sending packets on subqueue
1978 * @dev: network device
1979 * @queue_index: sub queue index
1981 * Resume individual transmit queue of a device with multiple transmit queues.
1983 static inline void netif_wake_subqueue(struct net_device
*dev
, u16 queue_index
)
1985 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, queue_index
);
1986 #ifdef CONFIG_NETPOLL_TRAP
1990 if (test_and_clear_bit(__QUEUE_STATE_XOFF
, &txq
->state
))
1991 __netif_schedule(txq
->qdisc
);
1995 * Returns a Tx hash for the given packet when dev->real_num_tx_queues is used
1996 * as a distribution range limit for the returned value.
1998 static inline u16
skb_tx_hash(const struct net_device
*dev
,
1999 const struct sk_buff
*skb
)
2001 return __skb_tx_hash(dev
, skb
, dev
->real_num_tx_queues
);
2005 * netif_is_multiqueue - test if device has multiple transmit queues
2006 * @dev: network device
2008 * Check if device has multiple transmit queues
2010 static inline int netif_is_multiqueue(const struct net_device
*dev
)
2012 return dev
->num_tx_queues
> 1;
2015 extern int netif_set_real_num_tx_queues(struct net_device
*dev
,
2019 extern int netif_set_real_num_rx_queues(struct net_device
*dev
,
2022 static inline int netif_set_real_num_rx_queues(struct net_device
*dev
,
2029 static inline int netif_copy_real_num_queues(struct net_device
*to_dev
,
2030 const struct net_device
*from_dev
)
2032 netif_set_real_num_tx_queues(to_dev
, from_dev
->real_num_tx_queues
);
2034 return netif_set_real_num_rx_queues(to_dev
,
2035 from_dev
->real_num_rx_queues
);
2041 /* Use this variant when it is known for sure that it
2042 * is executing from hardware interrupt context or with hardware interrupts
2045 extern void dev_kfree_skb_irq(struct sk_buff
*skb
);
2047 /* Use this variant in places where it could be invoked
2048 * from either hardware interrupt or other context, with hardware interrupts
2049 * either disabled or enabled.
2051 extern void dev_kfree_skb_any(struct sk_buff
*skb
);
2053 #define HAVE_NETIF_RX 1
2054 extern int netif_rx(struct sk_buff
*skb
);
2055 extern int netif_rx_ni(struct sk_buff
*skb
);
2056 #define HAVE_NETIF_RECEIVE_SKB 1
2057 extern int netif_receive_skb(struct sk_buff
*skb
);
2058 extern gro_result_t
dev_gro_receive(struct napi_struct
*napi
,
2059 struct sk_buff
*skb
);
2060 extern gro_result_t
napi_skb_finish(gro_result_t ret
, struct sk_buff
*skb
);
2061 extern gro_result_t
napi_gro_receive(struct napi_struct
*napi
,
2062 struct sk_buff
*skb
);
2063 extern void napi_gro_flush(struct napi_struct
*napi
);
2064 extern struct sk_buff
* napi_get_frags(struct napi_struct
*napi
);
2065 extern gro_result_t
napi_frags_finish(struct napi_struct
*napi
,
2066 struct sk_buff
*skb
,
2068 extern struct sk_buff
* napi_frags_skb(struct napi_struct
*napi
);
2069 extern gro_result_t
napi_gro_frags(struct napi_struct
*napi
);
2071 static inline void napi_free_frags(struct napi_struct
*napi
)
2073 kfree_skb(napi
->skb
);
2077 extern int netdev_rx_handler_register(struct net_device
*dev
,
2078 rx_handler_func_t
*rx_handler
,
2079 void *rx_handler_data
);
2080 extern void netdev_rx_handler_unregister(struct net_device
*dev
);
2082 extern int dev_valid_name(const char *name
);
2083 extern int dev_ioctl(struct net
*net
, unsigned int cmd
, void __user
*);
2084 extern int dev_ethtool(struct net
*net
, struct ifreq
*);
2085 extern unsigned dev_get_flags(const struct net_device
*);
2086 extern int __dev_change_flags(struct net_device
*, unsigned int flags
);
2087 extern int dev_change_flags(struct net_device
*, unsigned);
2088 extern void __dev_notify_flags(struct net_device
*, unsigned int old_flags
);
2089 extern int dev_change_name(struct net_device
*, const char *);
2090 extern int dev_set_alias(struct net_device
*, const char *, size_t);
2091 extern int dev_change_net_namespace(struct net_device
*,
2092 struct net
*, const char *);
2093 extern int dev_set_mtu(struct net_device
*, int);
2094 extern void dev_set_group(struct net_device
*, int);
2095 extern int dev_set_mac_address(struct net_device
*,
2097 extern int dev_hard_start_xmit(struct sk_buff
*skb
,
2098 struct net_device
*dev
,
2099 struct netdev_queue
*txq
);
2100 extern int dev_forward_skb(struct net_device
*dev
,
2101 struct sk_buff
*skb
);
2103 extern int netdev_budget
;
2105 /* Called by rtnetlink.c:rtnl_unlock() */
2106 extern void netdev_run_todo(void);
2109 * dev_put - release reference to device
2110 * @dev: network device
2112 * Release reference to device to allow it to be freed.
2114 static inline void dev_put(struct net_device
*dev
)
2116 irqsafe_cpu_dec(*dev
->pcpu_refcnt
);
2120 * dev_hold - get reference to device
2121 * @dev: network device
2123 * Hold reference to device to keep it from being freed.
2125 static inline void dev_hold(struct net_device
*dev
)
2127 irqsafe_cpu_inc(*dev
->pcpu_refcnt
);
2130 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
2131 * and _off may be called from IRQ context, but it is caller
2132 * who is responsible for serialization of these calls.
2134 * The name carrier is inappropriate, these functions should really be
2135 * called netif_lowerlayer_*() because they represent the state of any
2136 * kind of lower layer not just hardware media.
2139 extern void linkwatch_fire_event(struct net_device
*dev
);
2140 extern void linkwatch_forget_dev(struct net_device
*dev
);
2143 * netif_carrier_ok - test if carrier present
2144 * @dev: network device
2146 * Check if carrier is present on device
2148 static inline int netif_carrier_ok(const struct net_device
*dev
)
2150 return !test_bit(__LINK_STATE_NOCARRIER
, &dev
->state
);
2153 extern unsigned long dev_trans_start(struct net_device
*dev
);
2155 extern void __netdev_watchdog_up(struct net_device
*dev
);
2157 extern void netif_carrier_on(struct net_device
*dev
);
2159 extern void netif_carrier_off(struct net_device
*dev
);
2161 extern void netif_notify_peers(struct net_device
*dev
);
2164 * netif_dormant_on - mark device as dormant.
2165 * @dev: network device
2167 * Mark device as dormant (as per RFC2863).
2169 * The dormant state indicates that the relevant interface is not
2170 * actually in a condition to pass packets (i.e., it is not 'up') but is
2171 * in a "pending" state, waiting for some external event. For "on-
2172 * demand" interfaces, this new state identifies the situation where the
2173 * interface is waiting for events to place it in the up state.
2176 static inline void netif_dormant_on(struct net_device
*dev
)
2178 if (!test_and_set_bit(__LINK_STATE_DORMANT
, &dev
->state
))
2179 linkwatch_fire_event(dev
);
2183 * netif_dormant_off - set device as not dormant.
2184 * @dev: network device
2186 * Device is not in dormant state.
2188 static inline void netif_dormant_off(struct net_device
*dev
)
2190 if (test_and_clear_bit(__LINK_STATE_DORMANT
, &dev
->state
))
2191 linkwatch_fire_event(dev
);
2195 * netif_dormant - test if carrier present
2196 * @dev: network device
2198 * Check if carrier is present on device
2200 static inline int netif_dormant(const struct net_device
*dev
)
2202 return test_bit(__LINK_STATE_DORMANT
, &dev
->state
);
2207 * netif_oper_up - test if device is operational
2208 * @dev: network device
2210 * Check if carrier is operational
2212 static inline int netif_oper_up(const struct net_device
*dev
)
2214 return (dev
->operstate
== IF_OPER_UP
||
2215 dev
->operstate
== IF_OPER_UNKNOWN
/* backward compat */);
2219 * netif_device_present - is device available or removed
2220 * @dev: network device
2222 * Check if device has not been removed from system.
2224 static inline int netif_device_present(struct net_device
*dev
)
2226 return test_bit(__LINK_STATE_PRESENT
, &dev
->state
);
2229 extern void netif_device_detach(struct net_device
*dev
);
2231 extern void netif_device_attach(struct net_device
*dev
);
2234 * Network interface message level settings
2236 #define HAVE_NETIF_MSG 1
2239 NETIF_MSG_DRV
= 0x0001,
2240 NETIF_MSG_PROBE
= 0x0002,
2241 NETIF_MSG_LINK
= 0x0004,
2242 NETIF_MSG_TIMER
= 0x0008,
2243 NETIF_MSG_IFDOWN
= 0x0010,
2244 NETIF_MSG_IFUP
= 0x0020,
2245 NETIF_MSG_RX_ERR
= 0x0040,
2246 NETIF_MSG_TX_ERR
= 0x0080,
2247 NETIF_MSG_TX_QUEUED
= 0x0100,
2248 NETIF_MSG_INTR
= 0x0200,
2249 NETIF_MSG_TX_DONE
= 0x0400,
2250 NETIF_MSG_RX_STATUS
= 0x0800,
2251 NETIF_MSG_PKTDATA
= 0x1000,
2252 NETIF_MSG_HW
= 0x2000,
2253 NETIF_MSG_WOL
= 0x4000,
2256 #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
2257 #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
2258 #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
2259 #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
2260 #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
2261 #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
2262 #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
2263 #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
2264 #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
2265 #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
2266 #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
2267 #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
2268 #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
2269 #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
2270 #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
2272 static inline u32
netif_msg_init(int debug_value
, int default_msg_enable_bits
)
2275 if (debug_value
< 0 || debug_value
>= (sizeof(u32
) * 8))
2276 return default_msg_enable_bits
;
2277 if (debug_value
== 0) /* no output */
2279 /* set low N bits */
2280 return (1 << debug_value
) - 1;
2283 static inline void __netif_tx_lock(struct netdev_queue
*txq
, int cpu
)
2285 spin_lock(&txq
->_xmit_lock
);
2286 txq
->xmit_lock_owner
= cpu
;
2289 static inline void __netif_tx_lock_bh(struct netdev_queue
*txq
)
2291 spin_lock_bh(&txq
->_xmit_lock
);
2292 txq
->xmit_lock_owner
= smp_processor_id();
2295 static inline int __netif_tx_trylock(struct netdev_queue
*txq
)
2297 int ok
= spin_trylock(&txq
->_xmit_lock
);
2299 txq
->xmit_lock_owner
= smp_processor_id();
2303 static inline void __netif_tx_unlock(struct netdev_queue
*txq
)
2305 txq
->xmit_lock_owner
= -1;
2306 spin_unlock(&txq
->_xmit_lock
);
2309 static inline void __netif_tx_unlock_bh(struct netdev_queue
*txq
)
2311 txq
->xmit_lock_owner
= -1;
2312 spin_unlock_bh(&txq
->_xmit_lock
);
2315 static inline void txq_trans_update(struct netdev_queue
*txq
)
2317 if (txq
->xmit_lock_owner
!= -1)
2318 txq
->trans_start
= jiffies
;
2322 * netif_tx_lock - grab network device transmit lock
2323 * @dev: network device
2325 * Get network device transmit lock
2327 static inline void netif_tx_lock(struct net_device
*dev
)
2332 spin_lock(&dev
->tx_global_lock
);
2333 cpu
= smp_processor_id();
2334 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
2335 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
2337 /* We are the only thread of execution doing a
2338 * freeze, but we have to grab the _xmit_lock in
2339 * order to synchronize with threads which are in
2340 * the ->hard_start_xmit() handler and already
2341 * checked the frozen bit.
2343 __netif_tx_lock(txq
, cpu
);
2344 set_bit(__QUEUE_STATE_FROZEN
, &txq
->state
);
2345 __netif_tx_unlock(txq
);
2349 static inline void netif_tx_lock_bh(struct net_device
*dev
)
2355 static inline void netif_tx_unlock(struct net_device
*dev
)
2359 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
2360 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
2362 /* No need to grab the _xmit_lock here. If the
2363 * queue is not stopped for another reason, we
2366 clear_bit(__QUEUE_STATE_FROZEN
, &txq
->state
);
2367 netif_schedule_queue(txq
);
2369 spin_unlock(&dev
->tx_global_lock
);
2372 static inline void netif_tx_unlock_bh(struct net_device
*dev
)
2374 netif_tx_unlock(dev
);
2378 #define HARD_TX_LOCK(dev, txq, cpu) { \
2379 if ((dev->features & NETIF_F_LLTX) == 0) { \
2380 __netif_tx_lock(txq, cpu); \
2384 #define HARD_TX_UNLOCK(dev, txq) { \
2385 if ((dev->features & NETIF_F_LLTX) == 0) { \
2386 __netif_tx_unlock(txq); \
2390 static inline void netif_tx_disable(struct net_device
*dev
)
2396 cpu
= smp_processor_id();
2397 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
2398 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
2400 __netif_tx_lock(txq
, cpu
);
2401 netif_tx_stop_queue(txq
);
2402 __netif_tx_unlock(txq
);
2407 static inline void netif_addr_lock(struct net_device
*dev
)
2409 spin_lock(&dev
->addr_list_lock
);
2412 static inline void netif_addr_lock_bh(struct net_device
*dev
)
2414 spin_lock_bh(&dev
->addr_list_lock
);
2417 static inline void netif_addr_unlock(struct net_device
*dev
)
2419 spin_unlock(&dev
->addr_list_lock
);
2422 static inline void netif_addr_unlock_bh(struct net_device
*dev
)
2424 spin_unlock_bh(&dev
->addr_list_lock
);
2428 * dev_addrs walker. Should be used only for read access. Call with
2429 * rcu_read_lock held.
2431 #define for_each_dev_addr(dev, ha) \
2432 list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list)
2434 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
2436 extern void ether_setup(struct net_device
*dev
);
2438 /* Support for loadable net-drivers */
2439 extern struct net_device
*alloc_netdev_mqs(int sizeof_priv
, const char *name
,
2440 void (*setup
)(struct net_device
*),
2441 unsigned int txqs
, unsigned int rxqs
);
2442 #define alloc_netdev(sizeof_priv, name, setup) \
2443 alloc_netdev_mqs(sizeof_priv, name, setup, 1, 1)
2445 #define alloc_netdev_mq(sizeof_priv, name, setup, count) \
2446 alloc_netdev_mqs(sizeof_priv, name, setup, count, count)
2448 extern int register_netdev(struct net_device
*dev
);
2449 extern void unregister_netdev(struct net_device
*dev
);
2451 /* General hardware address lists handling functions */
2452 extern int __hw_addr_add_multiple(struct netdev_hw_addr_list
*to_list
,
2453 struct netdev_hw_addr_list
*from_list
,
2454 int addr_len
, unsigned char addr_type
);
2455 extern void __hw_addr_del_multiple(struct netdev_hw_addr_list
*to_list
,
2456 struct netdev_hw_addr_list
*from_list
,
2457 int addr_len
, unsigned char addr_type
);
2458 extern int __hw_addr_sync(struct netdev_hw_addr_list
*to_list
,
2459 struct netdev_hw_addr_list
*from_list
,
2461 extern void __hw_addr_unsync(struct netdev_hw_addr_list
*to_list
,
2462 struct netdev_hw_addr_list
*from_list
,
2464 extern void __hw_addr_flush(struct netdev_hw_addr_list
*list
);
2465 extern void __hw_addr_init(struct netdev_hw_addr_list
*list
);
2467 /* Functions used for device addresses handling */
2468 extern int dev_addr_add(struct net_device
*dev
, unsigned char *addr
,
2469 unsigned char addr_type
);
2470 extern int dev_addr_del(struct net_device
*dev
, unsigned char *addr
,
2471 unsigned char addr_type
);
2472 extern int dev_addr_add_multiple(struct net_device
*to_dev
,
2473 struct net_device
*from_dev
,
2474 unsigned char addr_type
);
2475 extern int dev_addr_del_multiple(struct net_device
*to_dev
,
2476 struct net_device
*from_dev
,
2477 unsigned char addr_type
);
2478 extern void dev_addr_flush(struct net_device
*dev
);
2479 extern int dev_addr_init(struct net_device
*dev
);
2481 /* Functions used for unicast addresses handling */
2482 extern int dev_uc_add(struct net_device
*dev
, unsigned char *addr
);
2483 extern int dev_uc_del(struct net_device
*dev
, unsigned char *addr
);
2484 extern int dev_uc_sync(struct net_device
*to
, struct net_device
*from
);
2485 extern void dev_uc_unsync(struct net_device
*to
, struct net_device
*from
);
2486 extern void dev_uc_flush(struct net_device
*dev
);
2487 extern void dev_uc_init(struct net_device
*dev
);
2489 /* Functions used for multicast addresses handling */
2490 extern int dev_mc_add(struct net_device
*dev
, unsigned char *addr
);
2491 extern int dev_mc_add_global(struct net_device
*dev
, unsigned char *addr
);
2492 extern int dev_mc_del(struct net_device
*dev
, unsigned char *addr
);
2493 extern int dev_mc_del_global(struct net_device
*dev
, unsigned char *addr
);
2494 extern int dev_mc_sync(struct net_device
*to
, struct net_device
*from
);
2495 extern void dev_mc_unsync(struct net_device
*to
, struct net_device
*from
);
2496 extern void dev_mc_flush(struct net_device
*dev
);
2497 extern void dev_mc_init(struct net_device
*dev
);
2499 /* Functions used for secondary unicast and multicast support */
2500 extern void dev_set_rx_mode(struct net_device
*dev
);
2501 extern void __dev_set_rx_mode(struct net_device
*dev
);
2502 extern int dev_set_promiscuity(struct net_device
*dev
, int inc
);
2503 extern int dev_set_allmulti(struct net_device
*dev
, int inc
);
2504 extern void netdev_state_change(struct net_device
*dev
);
2505 extern int netdev_bonding_change(struct net_device
*dev
,
2506 unsigned long event
);
2507 extern void netdev_features_change(struct net_device
*dev
);
2508 /* Load a device via the kmod */
2509 extern void dev_load(struct net
*net
, const char *name
);
2510 extern void dev_mcast_init(void);
2511 extern struct rtnl_link_stats64
*dev_get_stats(struct net_device
*dev
,
2512 struct rtnl_link_stats64
*storage
);
2514 extern int netdev_max_backlog
;
2515 extern int netdev_tstamp_prequeue
;
2516 extern int weight_p
;
2517 extern int bpf_jit_enable
;
2518 extern int netdev_set_master(struct net_device
*dev
, struct net_device
*master
);
2519 extern int netdev_set_bond_master(struct net_device
*dev
,
2520 struct net_device
*master
);
2521 extern int skb_checksum_help(struct sk_buff
*skb
);
2522 extern struct sk_buff
*skb_gso_segment(struct sk_buff
*skb
, u32 features
);
2524 extern void netdev_rx_csum_fault(struct net_device
*dev
);
2526 static inline void netdev_rx_csum_fault(struct net_device
*dev
)
2530 /* rx skb timestamps */
2531 extern void net_enable_timestamp(void);
2532 extern void net_disable_timestamp(void);
2534 #ifdef CONFIG_PROC_FS
2535 extern void *dev_seq_start(struct seq_file
*seq
, loff_t
*pos
);
2536 extern void *dev_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
);
2537 extern void dev_seq_stop(struct seq_file
*seq
, void *v
);
2540 extern int netdev_class_create_file(struct class_attribute
*class_attr
);
2541 extern void netdev_class_remove_file(struct class_attribute
*class_attr
);
2543 extern struct kobj_ns_type_operations net_ns_type_operations
;
2545 extern char *netdev_drivername(const struct net_device
*dev
, char *buffer
, int len
);
2547 extern void linkwatch_run_queue(void);
2549 static inline u32
netdev_get_wanted_features(struct net_device
*dev
)
2551 return (dev
->features
& ~dev
->hw_features
) | dev
->wanted_features
;
2553 u32
netdev_increment_features(u32 all
, u32 one
, u32 mask
);
2554 u32
netdev_fix_features(struct net_device
*dev
, u32 features
);
2555 int __netdev_update_features(struct net_device
*dev
);
2556 void netdev_update_features(struct net_device
*dev
);
2558 void netif_stacked_transfer_operstate(const struct net_device
*rootdev
,
2559 struct net_device
*dev
);
2561 u32
netif_skb_features(struct sk_buff
*skb
);
2563 static inline int net_gso_ok(u32 features
, int gso_type
)
2565 int feature
= gso_type
<< NETIF_F_GSO_SHIFT
;
2566 return (features
& feature
) == feature
;
2569 static inline int skb_gso_ok(struct sk_buff
*skb
, u32 features
)
2571 return net_gso_ok(features
, skb_shinfo(skb
)->gso_type
) &&
2572 (!skb_has_frag_list(skb
) || (features
& NETIF_F_FRAGLIST
));
2575 static inline int netif_needs_gso(struct sk_buff
*skb
, int features
)
2577 return skb_is_gso(skb
) && (!skb_gso_ok(skb
, features
) ||
2578 unlikely(skb
->ip_summed
!= CHECKSUM_PARTIAL
));
2581 static inline void netif_set_gso_max_size(struct net_device
*dev
,
2584 dev
->gso_max_size
= size
;
2587 static inline int netif_is_bond_slave(struct net_device
*dev
)
2589 return dev
->flags
& IFF_SLAVE
&& dev
->priv_flags
& IFF_BONDING
;
2592 extern struct pernet_operations __net_initdata loopback_net_ops
;
2594 static inline int dev_ethtool_get_settings(struct net_device
*dev
,
2595 struct ethtool_cmd
*cmd
)
2597 if (!dev
->ethtool_ops
|| !dev
->ethtool_ops
->get_settings
)
2599 return dev
->ethtool_ops
->get_settings(dev
, cmd
);
2602 static inline u32
dev_ethtool_get_rx_csum(struct net_device
*dev
)
2604 if (dev
->features
& NETIF_F_RXCSUM
)
2606 if (!dev
->ethtool_ops
|| !dev
->ethtool_ops
->get_rx_csum
)
2608 return dev
->ethtool_ops
->get_rx_csum(dev
);
2611 static inline u32
dev_ethtool_get_flags(struct net_device
*dev
)
2613 if (!dev
->ethtool_ops
|| !dev
->ethtool_ops
->get_flags
)
2615 return dev
->ethtool_ops
->get_flags(dev
);
2618 /* Logging, debugging and troubleshooting/diagnostic helpers. */
2620 /* netdev_printk helpers, similar to dev_printk */
2622 static inline const char *netdev_name(const struct net_device
*dev
)
2624 if (dev
->reg_state
!= NETREG_REGISTERED
)
2625 return "(unregistered net_device)";
2629 extern int netdev_printk(const char *level
, const struct net_device
*dev
,
2630 const char *format
, ...)
2631 __attribute__ ((format (printf
, 3, 4)));
2632 extern int netdev_emerg(const struct net_device
*dev
, const char *format
, ...)
2633 __attribute__ ((format (printf
, 2, 3)));
2634 extern int netdev_alert(const struct net_device
*dev
, const char *format
, ...)
2635 __attribute__ ((format (printf
, 2, 3)));
2636 extern int netdev_crit(const struct net_device
*dev
, const char *format
, ...)
2637 __attribute__ ((format (printf
, 2, 3)));
2638 extern int netdev_err(const struct net_device
*dev
, const char *format
, ...)
2639 __attribute__ ((format (printf
, 2, 3)));
2640 extern int netdev_warn(const struct net_device
*dev
, const char *format
, ...)
2641 __attribute__ ((format (printf
, 2, 3)));
2642 extern int netdev_notice(const struct net_device
*dev
, const char *format
, ...)
2643 __attribute__ ((format (printf
, 2, 3)));
2644 extern int netdev_info(const struct net_device
*dev
, const char *format
, ...)
2645 __attribute__ ((format (printf
, 2, 3)));
2647 #define MODULE_ALIAS_NETDEV(device) \
2648 MODULE_ALIAS("netdev-" device)
2651 #define netdev_dbg(__dev, format, args...) \
2652 netdev_printk(KERN_DEBUG, __dev, format, ##args)
2653 #elif defined(CONFIG_DYNAMIC_DEBUG)
2654 #define netdev_dbg(__dev, format, args...) \
2656 dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \
2657 netdev_name(__dev), ##args); \
2660 #define netdev_dbg(__dev, format, args...) \
2663 netdev_printk(KERN_DEBUG, __dev, format, ##args); \
2668 #if defined(VERBOSE_DEBUG)
2669 #define netdev_vdbg netdev_dbg
2672 #define netdev_vdbg(dev, format, args...) \
2675 netdev_printk(KERN_DEBUG, dev, format, ##args); \
2681 * netdev_WARN() acts like dev_printk(), but with the key difference
2682 * of using a WARN/WARN_ON to get the message out, including the
2683 * file/line information and a backtrace.
2685 #define netdev_WARN(dev, format, args...) \
2686 WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args);
2688 /* netif printk helpers, similar to netdev_printk */
2690 #define netif_printk(priv, type, level, dev, fmt, args...) \
2692 if (netif_msg_##type(priv)) \
2693 netdev_printk(level, (dev), fmt, ##args); \
2696 #define netif_level(level, priv, type, dev, fmt, args...) \
2698 if (netif_msg_##type(priv)) \
2699 netdev_##level(dev, fmt, ##args); \
2702 #define netif_emerg(priv, type, dev, fmt, args...) \
2703 netif_level(emerg, priv, type, dev, fmt, ##args)
2704 #define netif_alert(priv, type, dev, fmt, args...) \
2705 netif_level(alert, priv, type, dev, fmt, ##args)
2706 #define netif_crit(priv, type, dev, fmt, args...) \
2707 netif_level(crit, priv, type, dev, fmt, ##args)
2708 #define netif_err(priv, type, dev, fmt, args...) \
2709 netif_level(err, priv, type, dev, fmt, ##args)
2710 #define netif_warn(priv, type, dev, fmt, args...) \
2711 netif_level(warn, priv, type, dev, fmt, ##args)
2712 #define netif_notice(priv, type, dev, fmt, args...) \
2713 netif_level(notice, priv, type, dev, fmt, ##args)
2714 #define netif_info(priv, type, dev, fmt, args...) \
2715 netif_level(info, priv, type, dev, fmt, ##args)
2718 #define netif_dbg(priv, type, dev, format, args...) \
2719 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args)
2720 #elif defined(CONFIG_DYNAMIC_DEBUG)
2721 #define netif_dbg(priv, type, netdev, format, args...) \
2723 if (netif_msg_##type(priv)) \
2724 dynamic_dev_dbg((netdev)->dev.parent, \
2726 netdev_name(netdev), ##args); \
2729 #define netif_dbg(priv, type, dev, format, args...) \
2732 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
2737 #if defined(VERBOSE_DEBUG)
2738 #define netif_vdbg netif_dbg
2740 #define netif_vdbg(priv, type, dev, format, args...) \
2743 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
2748 #endif /* __KERNEL__ */
2750 #endif /* _LINUX_NETDEVICE_H */