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/timer.h>
35 #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>
58 /* source back-compat hooks */
59 #define SET_ETHTOOL_OPS(netdev,ops) \
60 ( (netdev)->ethtool_ops = (ops) )
62 #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev
63 functions are available. */
64 #define HAVE_FREE_NETDEV /* free_netdev() */
65 #define HAVE_NETDEV_PRIV /* netdev_priv() */
67 /* Backlog congestion levels */
68 #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
69 #define NET_RX_DROP 1 /* packet dropped */
72 * Transmit return codes: transmit return codes originate from three different
75 * - qdisc return codes
76 * - driver transmit return codes
79 * Drivers are allowed to return any one of those in their hard_start_xmit()
80 * function. Real network devices commonly used with qdiscs should only return
81 * the driver transmit return codes though - when qdiscs are used, the actual
82 * transmission happens asynchronously, so the value is not propagated to
83 * higher layers. Virtual network devices transmit synchronously, in this case
84 * the driver transmit return codes are consumed by dev_queue_xmit(), all
85 * others are propagated to higher layers.
88 /* qdisc ->enqueue() return codes. */
89 #define NET_XMIT_SUCCESS 0x00
90 #define NET_XMIT_DROP 0x01 /* skb dropped */
91 #define NET_XMIT_CN 0x02 /* congestion notification */
92 #define NET_XMIT_POLICED 0x03 /* skb is shot by police */
93 #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */
95 /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
96 * indicates that the device will soon be dropping packets, or already drops
97 * some packets of the same priority; prompting us to send less aggressively. */
98 #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e))
99 #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
101 /* Driver transmit return codes */
102 #define NETDEV_TX_MASK 0xf0
105 __NETDEV_TX_MIN = INT_MIN, /* make sure enum is signed */
106 NETDEV_TX_OK = 0x00, /* driver took care of packet */
107 NETDEV_TX_BUSY = 0x10, /* driver tx path was busy*/
108 NETDEV_TX_LOCKED = 0x20, /* driver tx lock was already taken */
110 typedef enum netdev_tx netdev_tx_t;
113 * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant;
114 * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed.
116 static inline bool dev_xmit_complete(int rc)
119 * Positive cases with an skb consumed by a driver:
120 * - successful transmission (rc == NETDEV_TX_OK)
121 * - error while transmitting (rc < 0)
122 * - error while queueing to a different device (rc & NET_XMIT_MASK)
124 if (likely(rc < NET_XMIT_MASK))
132 #define MAX_ADDR_LEN 32 /* Largest hardware address length */
136 * Compute the worst case header length according to the protocols
140 #if defined(CONFIG_WLAN) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
141 # if defined(CONFIG_MAC80211_MESH)
142 # define LL_MAX_HEADER 128
144 # define LL_MAX_HEADER 96
146 #elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE)
147 # define LL_MAX_HEADER 48
149 # define LL_MAX_HEADER 32
152 #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
153 !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \
154 !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
155 !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
156 #define MAX_HEADER LL_MAX_HEADER
158 #define MAX_HEADER (LL_MAX_HEADER + 48)
161 #endif /* __KERNEL__ */
164 * Network device statistics. Akin to the 2.0 ether stats but
165 * with byte counters.
168 struct net_device_stats {
169 unsigned long rx_packets; /* total packets received */
170 unsigned long tx_packets; /* total packets transmitted */
171 unsigned long rx_bytes; /* total bytes received */
172 unsigned long tx_bytes; /* total bytes transmitted */
173 unsigned long rx_errors; /* bad packets received */
174 unsigned long tx_errors; /* packet transmit problems */
175 unsigned long rx_dropped; /* no space in linux buffers */
176 unsigned long tx_dropped; /* no space available in linux */
177 unsigned long multicast; /* multicast packets received */
178 unsigned long collisions;
180 /* detailed rx_errors: */
181 unsigned long rx_length_errors;
182 unsigned long rx_over_errors; /* receiver ring buff overflow */
183 unsigned long rx_crc_errors; /* recved pkt with crc error */
184 unsigned long rx_frame_errors; /* recv'd frame alignment error */
185 unsigned long rx_fifo_errors; /* recv'r fifo overrun */
186 unsigned long rx_missed_errors; /* receiver missed packet */
188 /* detailed tx_errors */
189 unsigned long tx_aborted_errors;
190 unsigned long tx_carrier_errors;
191 unsigned long tx_fifo_errors;
192 unsigned long tx_heartbeat_errors;
193 unsigned long tx_window_errors;
196 unsigned long rx_compressed;
197 unsigned long tx_compressed;
201 /* Media selection options. */
214 #include <linux/cache.h>
215 #include <linux/skbuff.h>
221 struct netif_rx_stats {
224 unsigned time_squeeze;
225 unsigned cpu_collision;
226 unsigned received_rps;
229 DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat);
231 struct dev_addr_list {
232 struct dev_addr_list *next;
233 u8 da_addr[MAX_ADDR_LEN];
241 * We tag multicasts with these structures.
244 #define dev_mc_list dev_addr_list
245 #define dmi_addr da_addr
246 #define dmi_addrlen da_addrlen
247 #define dmi_users da_users
248 #define dmi_gusers da_gusers
250 struct netdev_hw_addr {
251 struct list_head list;
252 unsigned char addr[MAX_ADDR_LEN];
254 #define NETDEV_HW_ADDR_T_LAN 1
255 #define NETDEV_HW_ADDR_T_SAN 2
256 #define NETDEV_HW_ADDR_T_SLAVE 3
257 #define NETDEV_HW_ADDR_T_UNICAST 4
260 struct rcu_head rcu_head;
263 struct netdev_hw_addr_list {
264 struct list_head list;
268 #define netdev_uc_count(dev) ((dev)->uc.count)
269 #define netdev_uc_empty(dev) ((dev)->uc.count == 0)
270 #define netdev_for_each_uc_addr(ha, dev) \
271 list_for_each_entry(ha, &dev->uc.list, list)
273 #define netdev_mc_count(dev) ((dev)->mc_count)
274 #define netdev_mc_empty(dev) (netdev_mc_count(dev) == 0)
276 #define netdev_for_each_mc_addr(mclist, dev) \
277 for (mclist = dev->mc_list; mclist; mclist = mclist->next)
280 struct hh_cache *hh_next; /* Next entry */
281 atomic_t hh_refcnt; /* number of users */
283 * We want hh_output, hh_len, hh_lock and hh_data be a in a separate
285 * They are mostly read, but hh_refcnt may be changed quite frequently,
286 * incurring cache line ping pongs.
288 __be16 hh_type ____cacheline_aligned_in_smp;
289 /* protocol identifier, f.e ETH_P_IP
290 * NOTE: For VLANs, this will be the
291 * encapuslated type. --BLG
293 u16 hh_len; /* length of header */
294 int (*hh_output)(struct sk_buff *skb);
297 /* cached hardware header; allow for machine alignment needs. */
298 #define HH_DATA_MOD 16
299 #define HH_DATA_OFF(__len) \
300 (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
301 #define HH_DATA_ALIGN(__len) \
302 (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
303 unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)];
306 /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
308 * dev->hard_header_len ? (dev->hard_header_len +
309 * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
311 * We could use other alignment values, but we must maintain the
312 * relationship HH alignment <= LL alignment.
314 * LL_ALLOCATED_SPACE also takes into account the tailroom the device
317 #define LL_RESERVED_SPACE(dev) \
318 ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
319 #define LL_RESERVED_SPACE_EXTRA(dev,extra) \
320 ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
321 #define LL_ALLOCATED_SPACE(dev) \
322 ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
325 int (*create) (struct sk_buff *skb, struct net_device *dev,
326 unsigned short type, const void *daddr,
327 const void *saddr, unsigned len);
328 int (*parse)(const struct sk_buff *skb, unsigned char *haddr);
329 int (*rebuild)(struct sk_buff *skb);
330 #define HAVE_HEADER_CACHE
331 int (*cache)(const struct neighbour *neigh, struct hh_cache *hh);
332 void (*cache_update)(struct hh_cache *hh,
333 const struct net_device *dev,
334 const unsigned char *haddr);
337 /* These flag bits are private to the generic network queueing
338 * layer, they may not be explicitly referenced by any other
342 enum netdev_state_t {
344 __LINK_STATE_PRESENT,
345 __LINK_STATE_NOCARRIER,
346 __LINK_STATE_LINKWATCH_PENDING,
347 __LINK_STATE_DORMANT,
352 * This structure holds at boot time configured netdevice settings. They
353 * are then used in the device probing.
355 struct netdev_boot_setup {
359 #define NETDEV_BOOT_SETUP_MAX 8
361 extern int __init netdev_boot_setup(char *str);
364 * Structure for NAPI scheduling similar to tasklet but with weighting
367 /* The poll_list must only be managed by the entity which
368 * changes the state of the NAPI_STATE_SCHED bit. This means
369 * whoever atomically sets that bit can add this napi_struct
370 * to the per-cpu poll_list, and whoever clears that bit
371 * can remove from the list right before clearing the bit.
373 struct list_head poll_list;
377 int (*poll)(struct napi_struct *, int);
378 #ifdef CONFIG_NETPOLL
379 spinlock_t poll_lock;
383 unsigned int gro_count;
385 struct net_device *dev;
386 struct list_head dev_list;
387 struct sk_buff *gro_list;
392 NAPI_STATE_SCHED, /* Poll is scheduled */
393 NAPI_STATE_DISABLE, /* Disable pending */
394 NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */
404 typedef enum gro_result gro_result_t;
406 extern void __napi_schedule(struct napi_struct *n);
408 static inline int napi_disable_pending(struct napi_struct *n)
410 return test_bit(NAPI_STATE_DISABLE, &n->state);
414 * napi_schedule_prep - check if napi can be scheduled
417 * Test if NAPI routine is already running, and if not mark
418 * it as running. This is used as a condition variable
419 * insure only one NAPI poll instance runs. We also make
420 * sure there is no pending NAPI disable.
422 static inline int napi_schedule_prep(struct napi_struct *n)
424 return !napi_disable_pending(n) &&
425 !test_and_set_bit(NAPI_STATE_SCHED, &n->state);
429 * napi_schedule - schedule NAPI poll
432 * Schedule NAPI poll routine to be called if it is not already
435 static inline void napi_schedule(struct napi_struct *n)
437 if (napi_schedule_prep(n))
441 /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */
442 static inline int napi_reschedule(struct napi_struct *napi)
444 if (napi_schedule_prep(napi)) {
445 __napi_schedule(napi);
452 * napi_complete - NAPI processing complete
455 * Mark NAPI processing as complete.
457 extern void __napi_complete(struct napi_struct *n);
458 extern void napi_complete(struct napi_struct *n);
461 * napi_disable - prevent NAPI from scheduling
464 * Stop NAPI from being scheduled on this context.
465 * Waits till any outstanding processing completes.
467 static inline void napi_disable(struct napi_struct *n)
469 set_bit(NAPI_STATE_DISABLE, &n->state);
470 while (test_and_set_bit(NAPI_STATE_SCHED, &n->state))
472 clear_bit(NAPI_STATE_DISABLE, &n->state);
476 * napi_enable - enable NAPI scheduling
479 * Resume NAPI from being scheduled on this context.
480 * Must be paired with napi_disable.
482 static inline void napi_enable(struct napi_struct *n)
484 BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));
485 smp_mb__before_clear_bit();
486 clear_bit(NAPI_STATE_SCHED, &n->state);
491 * napi_synchronize - wait until NAPI is not running
494 * Wait until NAPI is done being scheduled on this context.
495 * Waits till any outstanding processing completes but
496 * does not disable future activations.
498 static inline void napi_synchronize(const struct napi_struct *n)
500 while (test_bit(NAPI_STATE_SCHED, &n->state))
504 # define napi_synchronize(n) barrier()
507 enum netdev_queue_state_t {
509 __QUEUE_STATE_FROZEN,
512 struct netdev_queue {
516 struct net_device *dev;
519 struct Qdisc *qdisc_sleeping;
523 spinlock_t _xmit_lock ____cacheline_aligned_in_smp;
526 * please use this field instead of dev->trans_start
528 unsigned long trans_start;
529 unsigned long tx_bytes;
530 unsigned long tx_packets;
531 unsigned long tx_dropped;
532 } ____cacheline_aligned_in_smp;
536 * This structure holds an RPS map which can be of variable length. The
537 * map is an array of CPUs.
544 #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16)))
546 /* This structure contains an instance of an RX queue. */
547 struct netdev_rx_queue {
548 struct rps_map *rps_map;
550 struct netdev_rx_queue *first;
552 } ____cacheline_aligned_in_smp;
556 * This structure defines the management hooks for network devices.
557 * The following hooks can be defined; unless noted otherwise, they are
558 * optional and can be filled with a null pointer.
560 * int (*ndo_init)(struct net_device *dev);
561 * This function is called once when network device is registered.
562 * The network device can use this to any late stage initializaton
563 * or semantic validattion. It can fail with an error code which will
564 * be propogated back to register_netdev
566 * void (*ndo_uninit)(struct net_device *dev);
567 * This function is called when device is unregistered or when registration
568 * fails. It is not called if init fails.
570 * int (*ndo_open)(struct net_device *dev);
571 * This function is called when network device transistions to the up
574 * int (*ndo_stop)(struct net_device *dev);
575 * This function is called when network device transistions to the down
578 * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb,
579 * struct net_device *dev);
580 * Called when a packet needs to be transmitted.
581 * Must return NETDEV_TX_OK , NETDEV_TX_BUSY.
582 * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX)
583 * Required can not be NULL.
585 * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb);
586 * Called to decide which queue to when device supports multiple
589 * void (*ndo_change_rx_flags)(struct net_device *dev, int flags);
590 * This function is called to allow device receiver to make
591 * changes to configuration when multicast or promiscious is enabled.
593 * void (*ndo_set_rx_mode)(struct net_device *dev);
594 * This function is called device changes address list filtering.
596 * void (*ndo_set_multicast_list)(struct net_device *dev);
597 * This function is called when the multicast address list changes.
599 * int (*ndo_set_mac_address)(struct net_device *dev, void *addr);
600 * This function is called when the Media Access Control address
601 * needs to be changed. If this interface is not defined, the
602 * mac address can not be changed.
604 * int (*ndo_validate_addr)(struct net_device *dev);
605 * Test if Media Access Control address is valid for the device.
607 * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
608 * Called when a user request an ioctl which can't be handled by
609 * the generic interface code. If not defined ioctl's return
610 * not supported error code.
612 * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map);
613 * Used to set network devices bus interface parameters. This interface
614 * is retained for legacy reason, new devices should use the bus
615 * interface (PCI) for low level management.
617 * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu);
618 * Called when a user wants to change the Maximum Transfer Unit
619 * of a device. If not defined, any request to change MTU will
620 * will return an error.
622 * void (*ndo_tx_timeout)(struct net_device *dev);
623 * Callback uses when the transmitter has not made any progress
624 * for dev->watchdog ticks.
626 * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
627 * Called when a user wants to get the network device usage
628 * statistics. If not defined, the counters in dev->stats will
631 * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp);
632 * If device support VLAN receive accleration
633 * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called
634 * when vlan groups for the device changes. Note: grp is NULL
635 * if no vlan's groups are being used.
637 * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid);
638 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
639 * this function is called when a VLAN id is registered.
641 * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid);
642 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
643 * this function is called when a VLAN id is unregistered.
645 * void (*ndo_poll_controller)(struct net_device *dev);
647 * SR-IOV management functions.
648 * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac);
649 * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos);
650 * int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate);
651 * int (*ndo_get_vf_config)(struct net_device *dev,
652 * int vf, struct ifla_vf_info *ivf);
654 #define HAVE_NET_DEVICE_OPS
655 struct net_device_ops {
656 int (*ndo_init)(struct net_device *dev);
657 void (*ndo_uninit)(struct net_device *dev);
658 int (*ndo_open)(struct net_device *dev);
659 int (*ndo_stop)(struct net_device *dev);
660 netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb,
661 struct net_device *dev);
662 u16 (*ndo_select_queue)(struct net_device *dev,
663 struct sk_buff *skb);
664 void (*ndo_change_rx_flags)(struct net_device *dev,
666 void (*ndo_set_rx_mode)(struct net_device *dev);
667 void (*ndo_set_multicast_list)(struct net_device *dev);
668 int (*ndo_set_mac_address)(struct net_device *dev,
670 int (*ndo_validate_addr)(struct net_device *dev);
671 int (*ndo_do_ioctl)(struct net_device *dev,
672 struct ifreq *ifr, int cmd);
673 int (*ndo_set_config)(struct net_device *dev,
675 int (*ndo_change_mtu)(struct net_device *dev,
677 int (*ndo_neigh_setup)(struct net_device *dev,
678 struct neigh_parms *);
679 void (*ndo_tx_timeout) (struct net_device *dev);
681 struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
683 void (*ndo_vlan_rx_register)(struct net_device *dev,
684 struct vlan_group *grp);
685 void (*ndo_vlan_rx_add_vid)(struct net_device *dev,
687 void (*ndo_vlan_rx_kill_vid)(struct net_device *dev,
689 #ifdef CONFIG_NET_POLL_CONTROLLER
690 void (*ndo_poll_controller)(struct net_device *dev);
692 int (*ndo_set_vf_mac)(struct net_device *dev,
694 int (*ndo_set_vf_vlan)(struct net_device *dev,
695 int queue, u16 vlan, u8 qos);
696 int (*ndo_set_vf_tx_rate)(struct net_device *dev,
698 int (*ndo_get_vf_config)(struct net_device *dev,
700 struct ifla_vf_info *ivf);
701 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
702 int (*ndo_fcoe_enable)(struct net_device *dev);
703 int (*ndo_fcoe_disable)(struct net_device *dev);
704 int (*ndo_fcoe_ddp_setup)(struct net_device *dev,
706 struct scatterlist *sgl,
708 int (*ndo_fcoe_ddp_done)(struct net_device *dev,
710 #define NETDEV_FCOE_WWNN 0
711 #define NETDEV_FCOE_WWPN 1
712 int (*ndo_fcoe_get_wwn)(struct net_device *dev,
718 * The DEVICE structure.
719 * Actually, this whole structure is a big mistake. It mixes I/O
720 * data with strictly "high-level" data, and it has to know about
721 * almost every data structure used in the INET module.
723 * FIXME: cleanup struct net_device such that network protocol info
730 * This is the first field of the "visible" part of this structure
731 * (i.e. as seen by users in the "Space.c" file). It is the name
735 /* device name hash chain */
736 struct hlist_node name_hlist;
741 * I/O specific fields
742 * FIXME: Merge these and struct ifmap into one
744 unsigned long mem_end; /* shared mem end */
745 unsigned long mem_start; /* shared mem start */
746 unsigned long base_addr; /* device I/O address */
747 unsigned int irq; /* device IRQ number */
750 * Some hardware also needs these fields, but they are not
751 * part of the usual set specified in Space.c.
754 unsigned char if_port; /* Selectable AUI, TP,..*/
755 unsigned char dma; /* DMA channel */
759 struct list_head dev_list;
760 struct list_head napi_list;
761 struct list_head unreg_list;
763 /* Net device features */
764 unsigned long features;
765 #define NETIF_F_SG 1 /* Scatter/gather IO. */
766 #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
767 #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
768 #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
769 #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
770 #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
771 #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
772 #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
773 #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
774 #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
775 #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
776 #define NETIF_F_GSO 2048 /* Enable software GSO. */
777 #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
778 /* do not use LLTX in new drivers */
779 #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
780 #define NETIF_F_GRO 16384 /* Generic receive offload */
781 #define NETIF_F_LRO 32768 /* large receive offload */
783 /* the GSO_MASK reserves bits 16 through 23 */
784 #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */
785 #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */
786 #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
787 #define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */
789 /* Segmentation offload features */
790 #define NETIF_F_GSO_SHIFT 16
791 #define NETIF_F_GSO_MASK 0x00ff0000
792 #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
793 #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
794 #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
795 #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
796 #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
797 #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT)
799 /* List of features with software fallbacks. */
800 #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
803 #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
804 #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
805 #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
806 #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
809 * If one device supports one of these features, then enable them
810 * for all in netdev_increment_features.
812 #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
813 NETIF_F_SG | NETIF_F_HIGHDMA | \
816 /* Interface index. Unique device identifier */
820 struct net_device_stats stats;
822 #ifdef CONFIG_WIRELESS_EXT
823 /* List of functions to handle Wireless Extensions (instead of ioctl).
824 * See <net/iw_handler.h> for details. Jean II */
825 const struct iw_handler_def * wireless_handlers;
826 /* Instance data managed by the core of Wireless Extensions. */
827 struct iw_public_data * wireless_data;
829 /* Management operations */
830 const struct net_device_ops *netdev_ops;
831 const struct ethtool_ops *ethtool_ops;
833 /* Hardware header description */
834 const struct header_ops *header_ops;
836 unsigned int flags; /* interface flags (a la BSD) */
837 unsigned short gflags;
838 unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */
839 unsigned short padded; /* How much padding added by alloc_netdev() */
841 unsigned char operstate; /* RFC2863 operstate */
842 unsigned char link_mode; /* mapping policy to operstate */
844 unsigned mtu; /* interface MTU value */
845 unsigned short type; /* interface hardware type */
846 unsigned short hard_header_len; /* hardware hdr length */
848 /* extra head- and tailroom the hardware may need, but not in all cases
849 * can this be guaranteed, especially tailroom. Some cases also use
850 * LL_MAX_HEADER instead to allocate the skb.
852 unsigned short needed_headroom;
853 unsigned short needed_tailroom;
855 struct net_device *master; /* Pointer to master device of a group,
856 * which this device is member of.
859 /* Interface address info. */
860 unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */
861 unsigned char addr_len; /* hardware address length */
862 unsigned short dev_id; /* for shared network cards */
864 struct netdev_hw_addr_list uc; /* Secondary unicast
867 spinlock_t addr_list_lock;
868 struct dev_addr_list *mc_list; /* Multicast mac addresses */
869 int mc_count; /* Number of installed mcasts */
870 unsigned int promiscuity;
871 unsigned int allmulti;
874 /* Protocol specific pointers */
876 #ifdef CONFIG_NET_DSA
877 void *dsa_ptr; /* dsa specific data */
879 void *atalk_ptr; /* AppleTalk link */
880 void *ip_ptr; /* IPv4 specific data */
881 void *dn_ptr; /* DECnet specific data */
882 void *ip6_ptr; /* IPv6 specific data */
883 void *ec_ptr; /* Econet specific data */
884 void *ax25_ptr; /* AX.25 specific data */
885 struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data,
886 assign before registering */
889 * Cache line mostly used on receive path (including eth_type_trans())
891 unsigned long last_rx; /* Time of last Rx */
892 /* Interface address info used in eth_type_trans() */
893 unsigned char *dev_addr; /* hw address, (before bcast
894 because most packets are
897 struct netdev_hw_addr_list dev_addrs; /* list of device
900 unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
903 struct kset *queues_kset;
905 struct netdev_rx_queue *_rx;
907 /* Number of RX queues allocated at alloc_netdev_mq() time */
908 unsigned int num_rx_queues;
911 struct netdev_queue rx_queue;
913 struct netdev_queue *_tx ____cacheline_aligned_in_smp;
915 /* Number of TX queues allocated at alloc_netdev_mq() time */
916 unsigned int num_tx_queues;
918 /* Number of TX queues currently active in device */
919 unsigned int real_num_tx_queues;
921 /* root qdisc from userspace point of view */
924 unsigned long tx_queue_len; /* Max frames per queue allowed */
925 spinlock_t tx_global_lock;
927 * One part is mostly used on xmit path (device)
929 /* These may be needed for future network-power-down code. */
932 * trans_start here is expensive for high speed devices on SMP,
933 * please use netdev_queue->trans_start instead.
935 unsigned long trans_start; /* Time (in jiffies) of last Tx */
937 int watchdog_timeo; /* used by dev_watchdog() */
938 struct timer_list watchdog_timer;
940 /* Number of references to this device */
941 atomic_t refcnt ____cacheline_aligned_in_smp;
943 /* delayed register/unregister */
944 struct list_head todo_list;
945 /* device index hash chain */
946 struct hlist_node index_hlist;
948 struct list_head link_watch_list;
950 /* register/unregister state machine */
951 enum { NETREG_UNINITIALIZED=0,
952 NETREG_REGISTERED, /* completed register_netdevice */
953 NETREG_UNREGISTERING, /* called unregister_netdevice */
954 NETREG_UNREGISTERED, /* completed unregister todo */
955 NETREG_RELEASED, /* called free_netdev */
956 NETREG_DUMMY, /* dummy device for NAPI poll */
960 RTNL_LINK_INITIALIZED,
961 RTNL_LINK_INITIALIZING,
962 } rtnl_link_state:16;
964 /* Called from unregister, can be used to call free_netdev */
965 void (*destructor)(struct net_device *dev);
967 #ifdef CONFIG_NETPOLL
968 struct netpoll_info *npinfo;
972 /* Network namespace this network device is inside */
976 /* mid-layer private */
980 struct net_bridge_port *br_port;
982 struct macvlan_port *macvlan_port;
984 struct garp_port *garp_port;
986 /* class/net/name entry */
988 /* space for optional device, statistics, and wireless sysfs groups */
989 const struct attribute_group *sysfs_groups[4];
991 /* rtnetlink link ops */
992 const struct rtnl_link_ops *rtnl_link_ops;
994 /* VLAN feature mask */
995 unsigned long vlan_features;
997 /* for setting kernel sock attribute on TCP connection setup */
998 #define GSO_MAX_SIZE 65536
999 unsigned int gso_max_size;
1002 /* Data Center Bridging netlink ops */
1003 const struct dcbnl_rtnl_ops *dcbnl_ops;
1006 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
1007 /* max exchange id for FCoE LRO by ddp */
1008 unsigned int fcoe_ddp_xid;
1010 /* n-tuple filter list attached to this device */
1011 struct ethtool_rx_ntuple_list ethtool_ntuple_list;
1013 #define to_net_dev(d) container_of(d, struct net_device, dev)
1015 #define NETDEV_ALIGN 32
1018 struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev,
1021 return &dev->_tx[index];
1024 static inline void netdev_for_each_tx_queue(struct net_device *dev,
1025 void (*f)(struct net_device *,
1026 struct netdev_queue *,
1032 for (i = 0; i < dev->num_tx_queues; i++)
1033 f(dev, &dev->_tx[i], arg);
1037 * Net namespace inlines
1040 struct net *dev_net(const struct net_device *dev)
1042 #ifdef CONFIG_NET_NS
1050 void dev_net_set(struct net_device *dev, struct net *net)
1052 #ifdef CONFIG_NET_NS
1053 release_net(dev->nd_net);
1054 dev->nd_net = hold_net(net);
1058 static inline bool netdev_uses_dsa_tags(struct net_device *dev)
1060 #ifdef CONFIG_NET_DSA_TAG_DSA
1061 if (dev->dsa_ptr != NULL)
1062 return dsa_uses_dsa_tags(dev->dsa_ptr);
1068 #ifndef CONFIG_NET_NS
1069 static inline void skb_set_dev(struct sk_buff *skb, struct net_device *dev)
1073 #else /* CONFIG_NET_NS */
1074 void skb_set_dev(struct sk_buff *skb, struct net_device *dev);
1077 static inline bool netdev_uses_trailer_tags(struct net_device *dev)
1079 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1080 if (dev->dsa_ptr != NULL)
1081 return dsa_uses_trailer_tags(dev->dsa_ptr);
1088 * netdev_priv - access network device private data
1089 * @dev: network device
1091 * Get network device private data
1093 static inline void *netdev_priv(const struct net_device *dev)
1095 return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN);
1098 /* Set the sysfs physical device reference for the network logical device
1099 * if set prior to registration will cause a symlink during initialization.
1101 #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
1103 /* Set the sysfs device type for the network logical device to allow
1104 * fin grained indentification of different network device types. For
1105 * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc.
1107 #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype))
1110 * netif_napi_add - initialize a napi context
1111 * @dev: network device
1112 * @napi: napi context
1113 * @poll: polling function
1114 * @weight: default weight
1116 * netif_napi_add() must be used to initialize a napi context prior to calling
1117 * *any* of the other napi related functions.
1119 void netif_napi_add(struct net_device *dev, struct napi_struct *napi,
1120 int (*poll)(struct napi_struct *, int), int weight);
1123 * netif_napi_del - remove a napi context
1124 * @napi: napi context
1126 * netif_napi_del() removes a napi context from the network device napi list
1128 void netif_napi_del(struct napi_struct *napi);
1130 struct napi_gro_cb {
1131 /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
1134 /* Length of frag0. */
1135 unsigned int frag0_len;
1137 /* This indicates where we are processing relative to skb->data. */
1140 /* This is non-zero if the packet may be of the same flow. */
1143 /* This is non-zero if the packet cannot be merged with the new skb. */
1146 /* Number of segments aggregated. */
1153 #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
1155 struct packet_type {
1156 __be16 type; /* This is really htons(ether_type). */
1157 struct net_device *dev; /* NULL is wildcarded here */
1158 int (*func) (struct sk_buff *,
1159 struct net_device *,
1160 struct packet_type *,
1161 struct net_device *);
1162 struct sk_buff *(*gso_segment)(struct sk_buff *skb,
1164 int (*gso_send_check)(struct sk_buff *skb);
1165 struct sk_buff **(*gro_receive)(struct sk_buff **head,
1166 struct sk_buff *skb);
1167 int (*gro_complete)(struct sk_buff *skb);
1168 void *af_packet_priv;
1169 struct list_head list;
1172 #include <linux/interrupt.h>
1173 #include <linux/notifier.h>
1175 extern rwlock_t dev_base_lock; /* Device list lock */
1178 #define for_each_netdev(net, d) \
1179 list_for_each_entry(d, &(net)->dev_base_head, dev_list)
1180 #define for_each_netdev_reverse(net, d) \
1181 list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list)
1182 #define for_each_netdev_rcu(net, d) \
1183 list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list)
1184 #define for_each_netdev_safe(net, d, n) \
1185 list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
1186 #define for_each_netdev_continue(net, d) \
1187 list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
1188 #define for_each_netdev_continue_rcu(net, d) \
1189 list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list)
1190 #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
1192 static inline struct net_device *next_net_device(struct net_device *dev)
1194 struct list_head *lh;
1198 lh = dev->dev_list.next;
1199 return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
1202 static inline struct net_device *next_net_device_rcu(struct net_device *dev)
1204 struct list_head *lh;
1208 lh = rcu_dereference(dev->dev_list.next);
1209 return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
1212 static inline struct net_device *first_net_device(struct net *net)
1214 return list_empty(&net->dev_base_head) ? NULL :
1215 net_device_entry(net->dev_base_head.next);
1218 extern int netdev_boot_setup_check(struct net_device *dev);
1219 extern unsigned long netdev_boot_base(const char *prefix, int unit);
1220 extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr);
1221 extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type);
1222 extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type);
1223 extern void dev_add_pack(struct packet_type *pt);
1224 extern void dev_remove_pack(struct packet_type *pt);
1225 extern void __dev_remove_pack(struct packet_type *pt);
1227 extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags,
1228 unsigned short mask);
1229 extern struct net_device *dev_get_by_name(struct net *net, const char *name);
1230 extern struct net_device *dev_get_by_name_rcu(struct net *net, const char *name);
1231 extern struct net_device *__dev_get_by_name(struct net *net, const char *name);
1232 extern int dev_alloc_name(struct net_device *dev, const char *name);
1233 extern int dev_open(struct net_device *dev);
1234 extern int dev_close(struct net_device *dev);
1235 extern void dev_disable_lro(struct net_device *dev);
1236 extern int dev_queue_xmit(struct sk_buff *skb);
1237 extern int register_netdevice(struct net_device *dev);
1238 extern void unregister_netdevice_queue(struct net_device *dev,
1239 struct list_head *head);
1240 extern void unregister_netdevice_many(struct list_head *head);
1241 static inline void unregister_netdevice(struct net_device *dev)
1243 unregister_netdevice_queue(dev, NULL);
1246 extern void free_netdev(struct net_device *dev);
1247 extern void synchronize_net(void);
1248 extern int register_netdevice_notifier(struct notifier_block *nb);
1249 extern int unregister_netdevice_notifier(struct notifier_block *nb);
1250 extern int init_dummy_netdev(struct net_device *dev);
1251 extern void netdev_resync_ops(struct net_device *dev);
1253 extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev);
1254 extern struct net_device *dev_get_by_index(struct net *net, int ifindex);
1255 extern struct net_device *__dev_get_by_index(struct net *net, int ifindex);
1256 extern struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex);
1257 extern int dev_restart(struct net_device *dev);
1258 #ifdef CONFIG_NETPOLL_TRAP
1259 extern int netpoll_trap(void);
1261 extern int skb_gro_receive(struct sk_buff **head,
1262 struct sk_buff *skb);
1263 extern void skb_gro_reset_offset(struct sk_buff *skb);
1265 static inline unsigned int skb_gro_offset(const struct sk_buff *skb)
1267 return NAPI_GRO_CB(skb)->data_offset;
1270 static inline unsigned int skb_gro_len(const struct sk_buff *skb)
1272 return skb->len - NAPI_GRO_CB(skb)->data_offset;
1275 static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len)
1277 NAPI_GRO_CB(skb)->data_offset += len;
1280 static inline void *skb_gro_header_fast(struct sk_buff *skb,
1281 unsigned int offset)
1283 return NAPI_GRO_CB(skb)->frag0 + offset;
1286 static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen)
1288 return NAPI_GRO_CB(skb)->frag0_len < hlen;
1291 static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen,
1292 unsigned int offset)
1294 NAPI_GRO_CB(skb)->frag0 = NULL;
1295 NAPI_GRO_CB(skb)->frag0_len = 0;
1296 return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL;
1299 static inline void *skb_gro_mac_header(struct sk_buff *skb)
1301 return NAPI_GRO_CB(skb)->frag0 ?: skb_mac_header(skb);
1304 static inline void *skb_gro_network_header(struct sk_buff *skb)
1306 return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) +
1307 skb_network_offset(skb);
1310 static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
1311 unsigned short type,
1312 const void *daddr, const void *saddr,
1315 if (!dev->header_ops || !dev->header_ops->create)
1318 return dev->header_ops->create(skb, dev, type, daddr, saddr, len);
1321 static inline int dev_parse_header(const struct sk_buff *skb,
1322 unsigned char *haddr)
1324 const struct net_device *dev = skb->dev;
1326 if (!dev->header_ops || !dev->header_ops->parse)
1328 return dev->header_ops->parse(skb, haddr);
1331 typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
1332 extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf);
1333 static inline int unregister_gifconf(unsigned int family)
1335 return register_gifconf(family, NULL);
1339 * Incoming packets are placed on per-cpu queues so that
1340 * no locking is needed.
1342 struct softnet_data {
1343 struct Qdisc *output_queue;
1344 struct list_head poll_list;
1345 struct sk_buff *completion_queue;
1347 /* Elements below can be accessed between CPUs for RPS */
1349 struct call_single_data csd ____cacheline_aligned_in_smp;
1351 struct sk_buff_head input_pkt_queue;
1352 struct napi_struct backlog;
1355 DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data);
1357 #define HAVE_NETIF_QUEUE
1359 extern void __netif_schedule(struct Qdisc *q);
1361 static inline void netif_schedule_queue(struct netdev_queue *txq)
1363 if (!test_bit(__QUEUE_STATE_XOFF, &txq->state))
1364 __netif_schedule(txq->qdisc);
1367 static inline void netif_tx_schedule_all(struct net_device *dev)
1371 for (i = 0; i < dev->num_tx_queues; i++)
1372 netif_schedule_queue(netdev_get_tx_queue(dev, i));
1375 static inline void netif_tx_start_queue(struct netdev_queue *dev_queue)
1377 clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
1381 * netif_start_queue - allow transmit
1382 * @dev: network device
1384 * Allow upper layers to call the device hard_start_xmit routine.
1386 static inline void netif_start_queue(struct net_device *dev)
1388 netif_tx_start_queue(netdev_get_tx_queue(dev, 0));
1391 static inline void netif_tx_start_all_queues(struct net_device *dev)
1395 for (i = 0; i < dev->num_tx_queues; i++) {
1396 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1397 netif_tx_start_queue(txq);
1401 static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue)
1403 #ifdef CONFIG_NETPOLL_TRAP
1404 if (netpoll_trap()) {
1405 netif_tx_start_queue(dev_queue);
1409 if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state))
1410 __netif_schedule(dev_queue->qdisc);
1414 * netif_wake_queue - restart transmit
1415 * @dev: network device
1417 * Allow upper layers to call the device hard_start_xmit routine.
1418 * Used for flow control when transmit resources are available.
1420 static inline void netif_wake_queue(struct net_device *dev)
1422 netif_tx_wake_queue(netdev_get_tx_queue(dev, 0));
1425 static inline void netif_tx_wake_all_queues(struct net_device *dev)
1429 for (i = 0; i < dev->num_tx_queues; i++) {
1430 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1431 netif_tx_wake_queue(txq);
1435 static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue)
1437 set_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
1441 * netif_stop_queue - stop transmitted packets
1442 * @dev: network device
1444 * Stop upper layers calling the device hard_start_xmit routine.
1445 * Used for flow control when transmit resources are unavailable.
1447 static inline void netif_stop_queue(struct net_device *dev)
1449 netif_tx_stop_queue(netdev_get_tx_queue(dev, 0));
1452 static inline void netif_tx_stop_all_queues(struct net_device *dev)
1456 for (i = 0; i < dev->num_tx_queues; i++) {
1457 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1458 netif_tx_stop_queue(txq);
1462 static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue)
1464 return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
1468 * netif_queue_stopped - test if transmit queue is flowblocked
1469 * @dev: network device
1471 * Test if transmit queue on device is currently unable to send.
1473 static inline int netif_queue_stopped(const struct net_device *dev)
1475 return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0));
1478 static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue)
1480 return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state);
1484 * netif_running - test if up
1485 * @dev: network device
1487 * Test if the device has been brought up.
1489 static inline int netif_running(const struct net_device *dev)
1491 return test_bit(__LINK_STATE_START, &dev->state);
1495 * Routines to manage the subqueues on a device. We only need start
1496 * stop, and a check if it's stopped. All other device management is
1497 * done at the overall netdevice level.
1498 * Also test the device if we're multiqueue.
1502 * netif_start_subqueue - allow sending packets on subqueue
1503 * @dev: network device
1504 * @queue_index: sub queue index
1506 * Start individual transmit queue of a device with multiple transmit queues.
1508 static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
1510 struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
1512 netif_tx_start_queue(txq);
1516 * netif_stop_subqueue - stop sending packets on subqueue
1517 * @dev: network device
1518 * @queue_index: sub queue index
1520 * Stop individual transmit queue of a device with multiple transmit queues.
1522 static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
1524 struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
1525 #ifdef CONFIG_NETPOLL_TRAP
1529 netif_tx_stop_queue(txq);
1533 * netif_subqueue_stopped - test status of subqueue
1534 * @dev: network device
1535 * @queue_index: sub queue index
1537 * Check individual transmit queue of a device with multiple transmit queues.
1539 static inline int __netif_subqueue_stopped(const struct net_device *dev,
1542 struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
1544 return netif_tx_queue_stopped(txq);
1547 static inline int netif_subqueue_stopped(const struct net_device *dev,
1548 struct sk_buff *skb)
1550 return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb));
1554 * netif_wake_subqueue - allow sending packets on subqueue
1555 * @dev: network device
1556 * @queue_index: sub queue index
1558 * Resume individual transmit queue of a device with multiple transmit queues.
1560 static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
1562 struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
1563 #ifdef CONFIG_NETPOLL_TRAP
1567 if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state))
1568 __netif_schedule(txq->qdisc);
1572 * netif_is_multiqueue - test if device has multiple transmit queues
1573 * @dev: network device
1575 * Check if device has multiple transmit queues
1577 static inline int netif_is_multiqueue(const struct net_device *dev)
1579 return (dev->num_tx_queues > 1);
1582 /* Use this variant when it is known for sure that it
1583 * is executing from hardware interrupt context or with hardware interrupts
1586 extern void dev_kfree_skb_irq(struct sk_buff *skb);
1588 /* Use this variant in places where it could be invoked
1589 * from either hardware interrupt or other context, with hardware interrupts
1590 * either disabled or enabled.
1592 extern void dev_kfree_skb_any(struct sk_buff *skb);
1594 #define HAVE_NETIF_RX 1
1595 extern int netif_rx(struct sk_buff *skb);
1596 extern int netif_rx_ni(struct sk_buff *skb);
1597 #define HAVE_NETIF_RECEIVE_SKB 1
1598 extern int netif_receive_skb(struct sk_buff *skb);
1599 extern gro_result_t dev_gro_receive(struct napi_struct *napi,
1600 struct sk_buff *skb);
1601 extern gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb);
1602 extern gro_result_t napi_gro_receive(struct napi_struct *napi,
1603 struct sk_buff *skb);
1604 extern void napi_reuse_skb(struct napi_struct *napi,
1605 struct sk_buff *skb);
1606 extern struct sk_buff * napi_get_frags(struct napi_struct *napi);
1607 extern gro_result_t napi_frags_finish(struct napi_struct *napi,
1608 struct sk_buff *skb,
1610 extern struct sk_buff * napi_frags_skb(struct napi_struct *napi);
1611 extern gro_result_t napi_gro_frags(struct napi_struct *napi);
1613 static inline void napi_free_frags(struct napi_struct *napi)
1615 kfree_skb(napi->skb);
1619 extern void netif_nit_deliver(struct sk_buff *skb);
1620 extern int dev_valid_name(const char *name);
1621 extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *);
1622 extern int dev_ethtool(struct net *net, struct ifreq *);
1623 extern unsigned dev_get_flags(const struct net_device *);
1624 extern int __dev_change_flags(struct net_device *, unsigned int flags);
1625 extern int dev_change_flags(struct net_device *, unsigned);
1626 extern void __dev_notify_flags(struct net_device *, unsigned int old_flags);
1627 extern int dev_change_name(struct net_device *, const char *);
1628 extern int dev_set_alias(struct net_device *, const char *, size_t);
1629 extern int dev_change_net_namespace(struct net_device *,
1630 struct net *, const char *);
1631 extern int dev_set_mtu(struct net_device *, int);
1632 extern int dev_set_mac_address(struct net_device *,
1634 extern int dev_hard_start_xmit(struct sk_buff *skb,
1635 struct net_device *dev,
1636 struct netdev_queue *txq);
1637 extern int dev_forward_skb(struct net_device *dev,
1638 struct sk_buff *skb);
1640 extern int netdev_budget;
1642 /* Called by rtnetlink.c:rtnl_unlock() */
1643 extern void netdev_run_todo(void);
1646 * dev_put - release reference to device
1647 * @dev: network device
1649 * Release reference to device to allow it to be freed.
1651 static inline void dev_put(struct net_device *dev)
1653 atomic_dec(&dev->refcnt);
1657 * dev_hold - get reference to device
1658 * @dev: network device
1660 * Hold reference to device to keep it from being freed.
1662 static inline void dev_hold(struct net_device *dev)
1664 atomic_inc(&dev->refcnt);
1667 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
1668 * and _off may be called from IRQ context, but it is caller
1669 * who is responsible for serialization of these calls.
1671 * The name carrier is inappropriate, these functions should really be
1672 * called netif_lowerlayer_*() because they represent the state of any
1673 * kind of lower layer not just hardware media.
1676 extern void linkwatch_fire_event(struct net_device *dev);
1677 extern void linkwatch_forget_dev(struct net_device *dev);
1680 * netif_carrier_ok - test if carrier present
1681 * @dev: network device
1683 * Check if carrier is present on device
1685 static inline int netif_carrier_ok(const struct net_device *dev)
1687 return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
1690 extern unsigned long dev_trans_start(struct net_device *dev);
1692 extern void __netdev_watchdog_up(struct net_device *dev);
1694 extern void netif_carrier_on(struct net_device *dev);
1696 extern void netif_carrier_off(struct net_device *dev);
1699 * netif_dormant_on - mark device as dormant.
1700 * @dev: network device
1702 * Mark device as dormant (as per RFC2863).
1704 * The dormant state indicates that the relevant interface is not
1705 * actually in a condition to pass packets (i.e., it is not 'up') but is
1706 * in a "pending" state, waiting for some external event. For "on-
1707 * demand" interfaces, this new state identifies the situation where the
1708 * interface is waiting for events to place it in the up state.
1711 static inline void netif_dormant_on(struct net_device *dev)
1713 if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state))
1714 linkwatch_fire_event(dev);
1718 * netif_dormant_off - set device as not dormant.
1719 * @dev: network device
1721 * Device is not in dormant state.
1723 static inline void netif_dormant_off(struct net_device *dev)
1725 if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state))
1726 linkwatch_fire_event(dev);
1730 * netif_dormant - test if carrier present
1731 * @dev: network device
1733 * Check if carrier is present on device
1735 static inline int netif_dormant(const struct net_device *dev)
1737 return test_bit(__LINK_STATE_DORMANT, &dev->state);
1742 * netif_oper_up - test if device is operational
1743 * @dev: network device
1745 * Check if carrier is operational
1747 static inline int netif_oper_up(const struct net_device *dev)
1749 return (dev->operstate == IF_OPER_UP ||
1750 dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
1754 * netif_device_present - is device available or removed
1755 * @dev: network device
1757 * Check if device has not been removed from system.
1759 static inline int netif_device_present(struct net_device *dev)
1761 return test_bit(__LINK_STATE_PRESENT, &dev->state);
1764 extern void netif_device_detach(struct net_device *dev);
1766 extern void netif_device_attach(struct net_device *dev);
1769 * Network interface message level settings
1771 #define HAVE_NETIF_MSG 1
1774 NETIF_MSG_DRV = 0x0001,
1775 NETIF_MSG_PROBE = 0x0002,
1776 NETIF_MSG_LINK = 0x0004,
1777 NETIF_MSG_TIMER = 0x0008,
1778 NETIF_MSG_IFDOWN = 0x0010,
1779 NETIF_MSG_IFUP = 0x0020,
1780 NETIF_MSG_RX_ERR = 0x0040,
1781 NETIF_MSG_TX_ERR = 0x0080,
1782 NETIF_MSG_TX_QUEUED = 0x0100,
1783 NETIF_MSG_INTR = 0x0200,
1784 NETIF_MSG_TX_DONE = 0x0400,
1785 NETIF_MSG_RX_STATUS = 0x0800,
1786 NETIF_MSG_PKTDATA = 0x1000,
1787 NETIF_MSG_HW = 0x2000,
1788 NETIF_MSG_WOL = 0x4000,
1791 #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
1792 #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
1793 #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
1794 #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
1795 #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
1796 #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
1797 #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
1798 #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
1799 #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
1800 #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
1801 #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
1802 #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
1803 #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
1804 #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
1805 #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
1807 static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
1810 if (debug_value < 0 || debug_value >= (sizeof(u32) * 8))
1811 return default_msg_enable_bits;
1812 if (debug_value == 0) /* no output */
1814 /* set low N bits */
1815 return (1 << debug_value) - 1;
1818 static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu)
1820 spin_lock(&txq->_xmit_lock);
1821 txq->xmit_lock_owner = cpu;
1824 static inline void __netif_tx_lock_bh(struct netdev_queue *txq)
1826 spin_lock_bh(&txq->_xmit_lock);
1827 txq->xmit_lock_owner = smp_processor_id();
1830 static inline int __netif_tx_trylock(struct netdev_queue *txq)
1832 int ok = spin_trylock(&txq->_xmit_lock);
1834 txq->xmit_lock_owner = smp_processor_id();
1838 static inline void __netif_tx_unlock(struct netdev_queue *txq)
1840 txq->xmit_lock_owner = -1;
1841 spin_unlock(&txq->_xmit_lock);
1844 static inline void __netif_tx_unlock_bh(struct netdev_queue *txq)
1846 txq->xmit_lock_owner = -1;
1847 spin_unlock_bh(&txq->_xmit_lock);
1850 static inline void txq_trans_update(struct netdev_queue *txq)
1852 if (txq->xmit_lock_owner != -1)
1853 txq->trans_start = jiffies;
1857 * netif_tx_lock - grab network device transmit lock
1858 * @dev: network device
1860 * Get network device transmit lock
1862 static inline void netif_tx_lock(struct net_device *dev)
1867 spin_lock(&dev->tx_global_lock);
1868 cpu = smp_processor_id();
1869 for (i = 0; i < dev->num_tx_queues; i++) {
1870 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1872 /* We are the only thread of execution doing a
1873 * freeze, but we have to grab the _xmit_lock in
1874 * order to synchronize with threads which are in
1875 * the ->hard_start_xmit() handler and already
1876 * checked the frozen bit.
1878 __netif_tx_lock(txq, cpu);
1879 set_bit(__QUEUE_STATE_FROZEN, &txq->state);
1880 __netif_tx_unlock(txq);
1884 static inline void netif_tx_lock_bh(struct net_device *dev)
1890 static inline void netif_tx_unlock(struct net_device *dev)
1894 for (i = 0; i < dev->num_tx_queues; i++) {
1895 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1897 /* No need to grab the _xmit_lock here. If the
1898 * queue is not stopped for another reason, we
1901 clear_bit(__QUEUE_STATE_FROZEN, &txq->state);
1902 netif_schedule_queue(txq);
1904 spin_unlock(&dev->tx_global_lock);
1907 static inline void netif_tx_unlock_bh(struct net_device *dev)
1909 netif_tx_unlock(dev);
1913 #define HARD_TX_LOCK(dev, txq, cpu) { \
1914 if ((dev->features & NETIF_F_LLTX) == 0) { \
1915 __netif_tx_lock(txq, cpu); \
1919 #define HARD_TX_UNLOCK(dev, txq) { \
1920 if ((dev->features & NETIF_F_LLTX) == 0) { \
1921 __netif_tx_unlock(txq); \
1925 static inline void netif_tx_disable(struct net_device *dev)
1931 cpu = smp_processor_id();
1932 for (i = 0; i < dev->num_tx_queues; i++) {
1933 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1935 __netif_tx_lock(txq, cpu);
1936 netif_tx_stop_queue(txq);
1937 __netif_tx_unlock(txq);
1942 static inline void netif_addr_lock(struct net_device *dev)
1944 spin_lock(&dev->addr_list_lock);
1947 static inline void netif_addr_lock_bh(struct net_device *dev)
1949 spin_lock_bh(&dev->addr_list_lock);
1952 static inline void netif_addr_unlock(struct net_device *dev)
1954 spin_unlock(&dev->addr_list_lock);
1957 static inline void netif_addr_unlock_bh(struct net_device *dev)
1959 spin_unlock_bh(&dev->addr_list_lock);
1963 * dev_addrs walker. Should be used only for read access. Call with
1964 * rcu_read_lock held.
1966 #define for_each_dev_addr(dev, ha) \
1967 list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list)
1969 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
1971 extern void ether_setup(struct net_device *dev);
1973 /* Support for loadable net-drivers */
1974 extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
1975 void (*setup)(struct net_device *),
1976 unsigned int queue_count);
1977 #define alloc_netdev(sizeof_priv, name, setup) \
1978 alloc_netdev_mq(sizeof_priv, name, setup, 1)
1979 extern int register_netdev(struct net_device *dev);
1980 extern void unregister_netdev(struct net_device *dev);
1982 /* Functions used for device addresses handling */
1983 extern int dev_addr_add(struct net_device *dev, unsigned char *addr,
1984 unsigned char addr_type);
1985 extern int dev_addr_del(struct net_device *dev, unsigned char *addr,
1986 unsigned char addr_type);
1987 extern int dev_addr_add_multiple(struct net_device *to_dev,
1988 struct net_device *from_dev,
1989 unsigned char addr_type);
1990 extern int dev_addr_del_multiple(struct net_device *to_dev,
1991 struct net_device *from_dev,
1992 unsigned char addr_type);
1994 /* Functions used for secondary unicast and multicast support */
1995 extern void dev_set_rx_mode(struct net_device *dev);
1996 extern void __dev_set_rx_mode(struct net_device *dev);
1997 extern int dev_unicast_delete(struct net_device *dev, void *addr);
1998 extern int dev_unicast_add(struct net_device *dev, void *addr);
1999 extern int dev_unicast_sync(struct net_device *to, struct net_device *from);
2000 extern void dev_unicast_unsync(struct net_device *to, struct net_device *from);
2001 extern void dev_unicast_flush(struct net_device *dev);
2002 extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all);
2003 extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly);
2004 extern int dev_mc_sync(struct net_device *to, struct net_device *from);
2005 extern void dev_mc_unsync(struct net_device *to, struct net_device *from);
2006 extern void dev_addr_discard(struct net_device *dev);
2007 extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all);
2008 extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly);
2009 extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count);
2010 extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count);
2011 extern int dev_set_promiscuity(struct net_device *dev, int inc);
2012 extern int dev_set_allmulti(struct net_device *dev, int inc);
2013 extern void netdev_state_change(struct net_device *dev);
2014 extern int netdev_bonding_change(struct net_device *dev,
2015 unsigned long event);
2016 extern void netdev_features_change(struct net_device *dev);
2017 /* Load a device via the kmod */
2018 extern void dev_load(struct net *net, const char *name);
2019 extern void dev_mcast_init(void);
2020 extern const struct net_device_stats *dev_get_stats(struct net_device *dev);
2021 extern void dev_txq_stats_fold(const struct net_device *dev, struct net_device_stats *stats);
2023 extern int netdev_max_backlog;
2024 extern int weight_p;
2025 extern int netdev_set_master(struct net_device *dev, struct net_device *master);
2026 extern int skb_checksum_help(struct sk_buff *skb);
2027 extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
2029 extern void netdev_rx_csum_fault(struct net_device *dev);
2031 static inline void netdev_rx_csum_fault(struct net_device *dev)
2035 /* rx skb timestamps */
2036 extern void net_enable_timestamp(void);
2037 extern void net_disable_timestamp(void);
2039 #ifdef CONFIG_PROC_FS
2040 extern void *dev_seq_start(struct seq_file *seq, loff_t *pos);
2041 extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
2042 extern void dev_seq_stop(struct seq_file *seq, void *v);
2045 extern int netdev_class_create_file(struct class_attribute *class_attr);
2046 extern void netdev_class_remove_file(struct class_attribute *class_attr);
2048 extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len);
2050 extern void linkwatch_run_queue(void);
2052 unsigned long netdev_increment_features(unsigned long all, unsigned long one,
2053 unsigned long mask);
2054 unsigned long netdev_fix_features(unsigned long features, const char *name);
2056 void netif_stacked_transfer_operstate(const struct net_device *rootdev,
2057 struct net_device *dev);
2059 static inline int net_gso_ok(int features, int gso_type)
2061 int feature = gso_type << NETIF_F_GSO_SHIFT;
2062 return (features & feature) == feature;
2065 static inline int skb_gso_ok(struct sk_buff *skb, int features)
2067 return net_gso_ok(features, skb_shinfo(skb)->gso_type) &&
2068 (!skb_has_frags(skb) || (features & NETIF_F_FRAGLIST));
2071 static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
2073 return skb_is_gso(skb) &&
2074 (!skb_gso_ok(skb, dev->features) ||
2075 unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
2078 static inline void netif_set_gso_max_size(struct net_device *dev,
2081 dev->gso_max_size = size;
2084 static inline void skb_bond_set_mac_by_master(struct sk_buff *skb,
2085 struct net_device *master)
2087 if (skb->pkt_type == PACKET_HOST) {
2088 u16 *dest = (u16 *) eth_hdr(skb)->h_dest;
2090 memcpy(dest, master->dev_addr, ETH_ALEN);
2094 /* On bonding slaves other than the currently active slave, suppress
2095 * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and
2096 * ARP on active-backup slaves with arp_validate enabled.
2098 static inline int skb_bond_should_drop(struct sk_buff *skb,
2099 struct net_device *master)
2102 struct net_device *dev = skb->dev;
2104 if (master->priv_flags & IFF_MASTER_ARPMON)
2105 dev->last_rx = jiffies;
2107 if ((master->priv_flags & IFF_MASTER_ALB) && master->br_port) {
2108 /* Do address unmangle. The local destination address
2109 * will be always the one master has. Provides the right
2110 * functionality in a bridge.
2112 skb_bond_set_mac_by_master(skb, master);
2115 if (dev->priv_flags & IFF_SLAVE_INACTIVE) {
2116 if ((dev->priv_flags & IFF_SLAVE_NEEDARP) &&
2117 skb->protocol == __cpu_to_be16(ETH_P_ARP))
2120 if (master->priv_flags & IFF_MASTER_ALB) {
2121 if (skb->pkt_type != PACKET_BROADCAST &&
2122 skb->pkt_type != PACKET_MULTICAST)
2125 if (master->priv_flags & IFF_MASTER_8023AD &&
2126 skb->protocol == __cpu_to_be16(ETH_P_SLOW))
2135 extern struct pernet_operations __net_initdata loopback_net_ops;
2137 static inline int dev_ethtool_get_settings(struct net_device *dev,
2138 struct ethtool_cmd *cmd)
2140 if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings)
2142 return dev->ethtool_ops->get_settings(dev, cmd);
2145 static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev)
2147 if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum)
2149 return dev->ethtool_ops->get_rx_csum(dev);
2152 static inline u32 dev_ethtool_get_flags(struct net_device *dev)
2154 if (!dev->ethtool_ops || !dev->ethtool_ops->get_flags)
2156 return dev->ethtool_ops->get_flags(dev);
2159 /* Logging, debugging and troubleshooting/diagnostic helpers. */
2161 /* netdev_printk helpers, similar to dev_printk */
2163 static inline const char *netdev_name(const struct net_device *dev)
2165 if (dev->reg_state != NETREG_REGISTERED)
2166 return "(unregistered net_device)";
2170 #define netdev_printk(level, netdev, format, args...) \
2171 dev_printk(level, (netdev)->dev.parent, \
2173 netdev_name(netdev), ##args)
2175 #define netdev_emerg(dev, format, args...) \
2176 netdev_printk(KERN_EMERG, dev, format, ##args)
2177 #define netdev_alert(dev, format, args...) \
2178 netdev_printk(KERN_ALERT, dev, format, ##args)
2179 #define netdev_crit(dev, format, args...) \
2180 netdev_printk(KERN_CRIT, dev, format, ##args)
2181 #define netdev_err(dev, format, args...) \
2182 netdev_printk(KERN_ERR, dev, format, ##args)
2183 #define netdev_warn(dev, format, args...) \
2184 netdev_printk(KERN_WARNING, dev, format, ##args)
2185 #define netdev_notice(dev, format, args...) \
2186 netdev_printk(KERN_NOTICE, dev, format, ##args)
2187 #define netdev_info(dev, format, args...) \
2188 netdev_printk(KERN_INFO, dev, format, ##args)
2191 #define netdev_dbg(__dev, format, args...) \
2192 netdev_printk(KERN_DEBUG, __dev, format, ##args)
2193 #elif defined(CONFIG_DYNAMIC_DEBUG)
2194 #define netdev_dbg(__dev, format, args...) \
2196 dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \
2197 netdev_name(__dev), ##args); \
2200 #define netdev_dbg(__dev, format, args...) \
2203 netdev_printk(KERN_DEBUG, __dev, format, ##args); \
2208 #if defined(VERBOSE_DEBUG)
2209 #define netdev_vdbg netdev_dbg
2212 #define netdev_vdbg(dev, format, args...) \
2215 netdev_printk(KERN_DEBUG, dev, format, ##args); \
2221 * netdev_WARN() acts like dev_printk(), but with the key difference
2222 * of using a WARN/WARN_ON to get the message out, including the
2223 * file/line information and a backtrace.
2225 #define netdev_WARN(dev, format, args...) \
2226 WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args);
2228 /* netif printk helpers, similar to netdev_printk */
2230 #define netif_printk(priv, type, level, dev, fmt, args...) \
2232 if (netif_msg_##type(priv)) \
2233 netdev_printk(level, (dev), fmt, ##args); \
2236 #define netif_emerg(priv, type, dev, fmt, args...) \
2237 netif_printk(priv, type, KERN_EMERG, dev, fmt, ##args)
2238 #define netif_alert(priv, type, dev, fmt, args...) \
2239 netif_printk(priv, type, KERN_ALERT, dev, fmt, ##args)
2240 #define netif_crit(priv, type, dev, fmt, args...) \
2241 netif_printk(priv, type, KERN_CRIT, dev, fmt, ##args)
2242 #define netif_err(priv, type, dev, fmt, args...) \
2243 netif_printk(priv, type, KERN_ERR, dev, fmt, ##args)
2244 #define netif_warn(priv, type, dev, fmt, args...) \
2245 netif_printk(priv, type, KERN_WARNING, dev, fmt, ##args)
2246 #define netif_notice(priv, type, dev, fmt, args...) \
2247 netif_printk(priv, type, KERN_NOTICE, dev, fmt, ##args)
2248 #define netif_info(priv, type, dev, fmt, args...) \
2249 netif_printk(priv, type, KERN_INFO, (dev), fmt, ##args)
2252 #define netif_dbg(priv, type, dev, format, args...) \
2253 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args)
2254 #elif defined(CONFIG_DYNAMIC_DEBUG)
2255 #define netif_dbg(priv, type, netdev, format, args...) \
2257 if (netif_msg_##type(priv)) \
2258 dynamic_dev_dbg((netdev)->dev.parent, \
2260 netdev_name(netdev), ##args); \
2263 #define netif_dbg(priv, type, dev, format, args...) \
2266 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
2271 #if defined(VERBOSE_DEBUG)
2272 #define netif_vdbg netdev_dbg
2274 #define netif_vdbg(priv, type, dev, format, args...) \
2277 netif_printk(KERN_DEBUG, dev, format, ##args); \
2282 #endif /* __KERNEL__ */
2284 #endif /* _LINUX_NETDEVICE_H */