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;
535 * This structure holds an RPS map which can be of variable length. The
536 * map is an array of CPUs.
543 #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16)))
545 /* This structure contains an instance of an RX queue. */
546 struct netdev_rx_queue {
547 struct rps_map *rps_map;
549 struct netdev_rx_queue *first;
551 } ____cacheline_aligned_in_smp;
554 * This structure defines the management hooks for network devices.
555 * The following hooks can be defined; unless noted otherwise, they are
556 * optional and can be filled with a null pointer.
558 * int (*ndo_init)(struct net_device *dev);
559 * This function is called once when network device is registered.
560 * The network device can use this to any late stage initializaton
561 * or semantic validattion. It can fail with an error code which will
562 * be propogated back to register_netdev
564 * void (*ndo_uninit)(struct net_device *dev);
565 * This function is called when device is unregistered or when registration
566 * fails. It is not called if init fails.
568 * int (*ndo_open)(struct net_device *dev);
569 * This function is called when network device transistions to the up
572 * int (*ndo_stop)(struct net_device *dev);
573 * This function is called when network device transistions to the down
576 * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb,
577 * struct net_device *dev);
578 * Called when a packet needs to be transmitted.
579 * Must return NETDEV_TX_OK , NETDEV_TX_BUSY.
580 * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX)
581 * Required can not be NULL.
583 * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb);
584 * Called to decide which queue to when device supports multiple
587 * void (*ndo_change_rx_flags)(struct net_device *dev, int flags);
588 * This function is called to allow device receiver to make
589 * changes to configuration when multicast or promiscious is enabled.
591 * void (*ndo_set_rx_mode)(struct net_device *dev);
592 * This function is called device changes address list filtering.
594 * void (*ndo_set_multicast_list)(struct net_device *dev);
595 * This function is called when the multicast address list changes.
597 * int (*ndo_set_mac_address)(struct net_device *dev, void *addr);
598 * This function is called when the Media Access Control address
599 * needs to be changed. If this interface is not defined, the
600 * mac address can not be changed.
602 * int (*ndo_validate_addr)(struct net_device *dev);
603 * Test if Media Access Control address is valid for the device.
605 * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
606 * Called when a user request an ioctl which can't be handled by
607 * the generic interface code. If not defined ioctl's return
608 * not supported error code.
610 * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map);
611 * Used to set network devices bus interface parameters. This interface
612 * is retained for legacy reason, new devices should use the bus
613 * interface (PCI) for low level management.
615 * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu);
616 * Called when a user wants to change the Maximum Transfer Unit
617 * of a device. If not defined, any request to change MTU will
618 * will return an error.
620 * void (*ndo_tx_timeout)(struct net_device *dev);
621 * Callback uses when the transmitter has not made any progress
622 * for dev->watchdog ticks.
624 * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
625 * Called when a user wants to get the network device usage
626 * statistics. If not defined, the counters in dev->stats will
629 * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp);
630 * If device support VLAN receive accleration
631 * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called
632 * when vlan groups for the device changes. Note: grp is NULL
633 * if no vlan's groups are being used.
635 * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid);
636 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
637 * this function is called when a VLAN id is registered.
639 * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid);
640 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
641 * this function is called when a VLAN id is unregistered.
643 * void (*ndo_poll_controller)(struct net_device *dev);
645 * SR-IOV management functions.
646 * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac);
647 * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos);
648 * int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate);
649 * int (*ndo_get_vf_config)(struct net_device *dev,
650 * int vf, struct ifla_vf_info *ivf);
652 #define HAVE_NET_DEVICE_OPS
653 struct net_device_ops {
654 int (*ndo_init)(struct net_device *dev);
655 void (*ndo_uninit)(struct net_device *dev);
656 int (*ndo_open)(struct net_device *dev);
657 int (*ndo_stop)(struct net_device *dev);
658 netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb,
659 struct net_device *dev);
660 u16 (*ndo_select_queue)(struct net_device *dev,
661 struct sk_buff *skb);
662 void (*ndo_change_rx_flags)(struct net_device *dev,
664 void (*ndo_set_rx_mode)(struct net_device *dev);
665 void (*ndo_set_multicast_list)(struct net_device *dev);
666 int (*ndo_set_mac_address)(struct net_device *dev,
668 int (*ndo_validate_addr)(struct net_device *dev);
669 int (*ndo_do_ioctl)(struct net_device *dev,
670 struct ifreq *ifr, int cmd);
671 int (*ndo_set_config)(struct net_device *dev,
673 int (*ndo_change_mtu)(struct net_device *dev,
675 int (*ndo_neigh_setup)(struct net_device *dev,
676 struct neigh_parms *);
677 void (*ndo_tx_timeout) (struct net_device *dev);
679 struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
681 void (*ndo_vlan_rx_register)(struct net_device *dev,
682 struct vlan_group *grp);
683 void (*ndo_vlan_rx_add_vid)(struct net_device *dev,
685 void (*ndo_vlan_rx_kill_vid)(struct net_device *dev,
687 #ifdef CONFIG_NET_POLL_CONTROLLER
688 void (*ndo_poll_controller)(struct net_device *dev);
690 int (*ndo_set_vf_mac)(struct net_device *dev,
692 int (*ndo_set_vf_vlan)(struct net_device *dev,
693 int queue, u16 vlan, u8 qos);
694 int (*ndo_set_vf_tx_rate)(struct net_device *dev,
696 int (*ndo_get_vf_config)(struct net_device *dev,
698 struct ifla_vf_info *ivf);
699 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
700 int (*ndo_fcoe_enable)(struct net_device *dev);
701 int (*ndo_fcoe_disable)(struct net_device *dev);
702 int (*ndo_fcoe_ddp_setup)(struct net_device *dev,
704 struct scatterlist *sgl,
706 int (*ndo_fcoe_ddp_done)(struct net_device *dev,
708 #define NETDEV_FCOE_WWNN 0
709 #define NETDEV_FCOE_WWPN 1
710 int (*ndo_fcoe_get_wwn)(struct net_device *dev,
716 * The DEVICE structure.
717 * Actually, this whole structure is a big mistake. It mixes I/O
718 * data with strictly "high-level" data, and it has to know about
719 * almost every data structure used in the INET module.
721 * FIXME: cleanup struct net_device such that network protocol info
728 * This is the first field of the "visible" part of this structure
729 * (i.e. as seen by users in the "Space.c" file). It is the name
733 /* device name hash chain */
734 struct hlist_node name_hlist;
739 * I/O specific fields
740 * FIXME: Merge these and struct ifmap into one
742 unsigned long mem_end; /* shared mem end */
743 unsigned long mem_start; /* shared mem start */
744 unsigned long base_addr; /* device I/O address */
745 unsigned int irq; /* device IRQ number */
748 * Some hardware also needs these fields, but they are not
749 * part of the usual set specified in Space.c.
752 unsigned char if_port; /* Selectable AUI, TP,..*/
753 unsigned char dma; /* DMA channel */
757 struct list_head dev_list;
758 struct list_head napi_list;
759 struct list_head unreg_list;
761 /* Net device features */
762 unsigned long features;
763 #define NETIF_F_SG 1 /* Scatter/gather IO. */
764 #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
765 #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
766 #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
767 #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
768 #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
769 #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
770 #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
771 #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
772 #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
773 #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
774 #define NETIF_F_GSO 2048 /* Enable software GSO. */
775 #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
776 /* do not use LLTX in new drivers */
777 #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
778 #define NETIF_F_GRO 16384 /* Generic receive offload */
779 #define NETIF_F_LRO 32768 /* large receive offload */
781 /* the GSO_MASK reserves bits 16 through 23 */
782 #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */
783 #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */
784 #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
785 #define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */
787 /* Segmentation offload features */
788 #define NETIF_F_GSO_SHIFT 16
789 #define NETIF_F_GSO_MASK 0x00ff0000
790 #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
791 #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
792 #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
793 #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
794 #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
795 #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT)
797 /* List of features with software fallbacks. */
798 #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
801 #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
802 #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
803 #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
804 #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
807 * If one device supports one of these features, then enable them
808 * for all in netdev_increment_features.
810 #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
811 NETIF_F_SG | NETIF_F_HIGHDMA | \
814 /* Interface index. Unique device identifier */
818 struct net_device_stats stats;
820 #ifdef CONFIG_WIRELESS_EXT
821 /* List of functions to handle Wireless Extensions (instead of ioctl).
822 * See <net/iw_handler.h> for details. Jean II */
823 const struct iw_handler_def * wireless_handlers;
824 /* Instance data managed by the core of Wireless Extensions. */
825 struct iw_public_data * wireless_data;
827 /* Management operations */
828 const struct net_device_ops *netdev_ops;
829 const struct ethtool_ops *ethtool_ops;
831 /* Hardware header description */
832 const struct header_ops *header_ops;
834 unsigned int flags; /* interface flags (a la BSD) */
835 unsigned short gflags;
836 unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */
837 unsigned short padded; /* How much padding added by alloc_netdev() */
839 unsigned char operstate; /* RFC2863 operstate */
840 unsigned char link_mode; /* mapping policy to operstate */
842 unsigned mtu; /* interface MTU value */
843 unsigned short type; /* interface hardware type */
844 unsigned short hard_header_len; /* hardware hdr length */
846 /* extra head- and tailroom the hardware may need, but not in all cases
847 * can this be guaranteed, especially tailroom. Some cases also use
848 * LL_MAX_HEADER instead to allocate the skb.
850 unsigned short needed_headroom;
851 unsigned short needed_tailroom;
853 struct net_device *master; /* Pointer to master device of a group,
854 * which this device is member of.
857 /* Interface address info. */
858 unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */
859 unsigned char addr_len; /* hardware address length */
860 unsigned short dev_id; /* for shared network cards */
862 struct netdev_hw_addr_list uc; /* Secondary unicast
865 spinlock_t addr_list_lock;
866 struct dev_addr_list *mc_list; /* Multicast mac addresses */
867 int mc_count; /* Number of installed mcasts */
868 unsigned int promiscuity;
869 unsigned int allmulti;
872 /* Protocol specific pointers */
874 #ifdef CONFIG_NET_DSA
875 void *dsa_ptr; /* dsa specific data */
877 void *atalk_ptr; /* AppleTalk link */
878 void *ip_ptr; /* IPv4 specific data */
879 void *dn_ptr; /* DECnet specific data */
880 void *ip6_ptr; /* IPv6 specific data */
881 void *ec_ptr; /* Econet specific data */
882 void *ax25_ptr; /* AX.25 specific data */
883 struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data,
884 assign before registering */
887 * Cache line mostly used on receive path (including eth_type_trans())
889 unsigned long last_rx; /* Time of last Rx */
890 /* Interface address info used in eth_type_trans() */
891 unsigned char *dev_addr; /* hw address, (before bcast
892 because most packets are
895 struct netdev_hw_addr_list dev_addrs; /* list of device
898 unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
900 struct kset *queues_kset;
902 struct netdev_rx_queue *_rx;
904 /* Number of RX queues allocated at alloc_netdev_mq() time */
905 unsigned int num_rx_queues;
907 struct netdev_queue rx_queue;
909 struct netdev_queue *_tx ____cacheline_aligned_in_smp;
911 /* Number of TX queues allocated at alloc_netdev_mq() time */
912 unsigned int num_tx_queues;
914 /* Number of TX queues currently active in device */
915 unsigned int real_num_tx_queues;
917 /* root qdisc from userspace point of view */
920 unsigned long tx_queue_len; /* Max frames per queue allowed */
921 spinlock_t tx_global_lock;
923 * One part is mostly used on xmit path (device)
925 /* These may be needed for future network-power-down code. */
928 * trans_start here is expensive for high speed devices on SMP,
929 * please use netdev_queue->trans_start instead.
931 unsigned long trans_start; /* Time (in jiffies) of last Tx */
933 int watchdog_timeo; /* used by dev_watchdog() */
934 struct timer_list watchdog_timer;
936 /* Number of references to this device */
937 atomic_t refcnt ____cacheline_aligned_in_smp;
939 /* delayed register/unregister */
940 struct list_head todo_list;
941 /* device index hash chain */
942 struct hlist_node index_hlist;
944 struct list_head link_watch_list;
946 /* register/unregister state machine */
947 enum { NETREG_UNINITIALIZED=0,
948 NETREG_REGISTERED, /* completed register_netdevice */
949 NETREG_UNREGISTERING, /* called unregister_netdevice */
950 NETREG_UNREGISTERED, /* completed unregister todo */
951 NETREG_RELEASED, /* called free_netdev */
952 NETREG_DUMMY, /* dummy device for NAPI poll */
956 RTNL_LINK_INITIALIZED,
957 RTNL_LINK_INITIALIZING,
958 } rtnl_link_state:16;
960 /* Called from unregister, can be used to call free_netdev */
961 void (*destructor)(struct net_device *dev);
963 #ifdef CONFIG_NETPOLL
964 struct netpoll_info *npinfo;
968 /* Network namespace this network device is inside */
972 /* mid-layer private */
976 struct net_bridge_port *br_port;
978 struct macvlan_port *macvlan_port;
980 struct garp_port *garp_port;
982 /* class/net/name entry */
984 /* space for optional device, statistics, and wireless sysfs groups */
985 const struct attribute_group *sysfs_groups[4];
987 /* rtnetlink link ops */
988 const struct rtnl_link_ops *rtnl_link_ops;
990 /* VLAN feature mask */
991 unsigned long vlan_features;
993 /* for setting kernel sock attribute on TCP connection setup */
994 #define GSO_MAX_SIZE 65536
995 unsigned int gso_max_size;
998 /* Data Center Bridging netlink ops */
999 const struct dcbnl_rtnl_ops *dcbnl_ops;
1002 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
1003 /* max exchange id for FCoE LRO by ddp */
1004 unsigned int fcoe_ddp_xid;
1006 /* n-tuple filter list attached to this device */
1007 struct ethtool_rx_ntuple_list ethtool_ntuple_list;
1009 #define to_net_dev(d) container_of(d, struct net_device, dev)
1011 #define NETDEV_ALIGN 32
1014 struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev,
1017 return &dev->_tx[index];
1020 static inline void netdev_for_each_tx_queue(struct net_device *dev,
1021 void (*f)(struct net_device *,
1022 struct netdev_queue *,
1028 for (i = 0; i < dev->num_tx_queues; i++)
1029 f(dev, &dev->_tx[i], arg);
1033 * Net namespace inlines
1036 struct net *dev_net(const struct net_device *dev)
1038 #ifdef CONFIG_NET_NS
1046 void dev_net_set(struct net_device *dev, struct net *net)
1048 #ifdef CONFIG_NET_NS
1049 release_net(dev->nd_net);
1050 dev->nd_net = hold_net(net);
1054 static inline bool netdev_uses_dsa_tags(struct net_device *dev)
1056 #ifdef CONFIG_NET_DSA_TAG_DSA
1057 if (dev->dsa_ptr != NULL)
1058 return dsa_uses_dsa_tags(dev->dsa_ptr);
1064 #ifndef CONFIG_NET_NS
1065 static inline void skb_set_dev(struct sk_buff *skb, struct net_device *dev)
1069 #else /* CONFIG_NET_NS */
1070 void skb_set_dev(struct sk_buff *skb, struct net_device *dev);
1073 static inline bool netdev_uses_trailer_tags(struct net_device *dev)
1075 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1076 if (dev->dsa_ptr != NULL)
1077 return dsa_uses_trailer_tags(dev->dsa_ptr);
1084 * netdev_priv - access network device private data
1085 * @dev: network device
1087 * Get network device private data
1089 static inline void *netdev_priv(const struct net_device *dev)
1091 return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN);
1094 /* Set the sysfs physical device reference for the network logical device
1095 * if set prior to registration will cause a symlink during initialization.
1097 #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
1099 /* Set the sysfs device type for the network logical device to allow
1100 * fin grained indentification of different network device types. For
1101 * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc.
1103 #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype))
1106 * netif_napi_add - initialize a napi context
1107 * @dev: network device
1108 * @napi: napi context
1109 * @poll: polling function
1110 * @weight: default weight
1112 * netif_napi_add() must be used to initialize a napi context prior to calling
1113 * *any* of the other napi related functions.
1115 void netif_napi_add(struct net_device *dev, struct napi_struct *napi,
1116 int (*poll)(struct napi_struct *, int), int weight);
1119 * netif_napi_del - remove a napi context
1120 * @napi: napi context
1122 * netif_napi_del() removes a napi context from the network device napi list
1124 void netif_napi_del(struct napi_struct *napi);
1126 struct napi_gro_cb {
1127 /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
1130 /* Length of frag0. */
1131 unsigned int frag0_len;
1133 /* This indicates where we are processing relative to skb->data. */
1136 /* This is non-zero if the packet may be of the same flow. */
1139 /* This is non-zero if the packet cannot be merged with the new skb. */
1142 /* Number of segments aggregated. */
1149 #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
1151 struct packet_type {
1152 __be16 type; /* This is really htons(ether_type). */
1153 struct net_device *dev; /* NULL is wildcarded here */
1154 int (*func) (struct sk_buff *,
1155 struct net_device *,
1156 struct packet_type *,
1157 struct net_device *);
1158 struct sk_buff *(*gso_segment)(struct sk_buff *skb,
1160 int (*gso_send_check)(struct sk_buff *skb);
1161 struct sk_buff **(*gro_receive)(struct sk_buff **head,
1162 struct sk_buff *skb);
1163 int (*gro_complete)(struct sk_buff *skb);
1164 void *af_packet_priv;
1165 struct list_head list;
1168 #include <linux/interrupt.h>
1169 #include <linux/notifier.h>
1171 extern rwlock_t dev_base_lock; /* Device list lock */
1174 #define for_each_netdev(net, d) \
1175 list_for_each_entry(d, &(net)->dev_base_head, dev_list)
1176 #define for_each_netdev_reverse(net, d) \
1177 list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list)
1178 #define for_each_netdev_rcu(net, d) \
1179 list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list)
1180 #define for_each_netdev_safe(net, d, n) \
1181 list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
1182 #define for_each_netdev_continue(net, d) \
1183 list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
1184 #define for_each_netdev_continue_rcu(net, d) \
1185 list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list)
1186 #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
1188 static inline struct net_device *next_net_device(struct net_device *dev)
1190 struct list_head *lh;
1194 lh = dev->dev_list.next;
1195 return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
1198 static inline struct net_device *next_net_device_rcu(struct net_device *dev)
1200 struct list_head *lh;
1204 lh = rcu_dereference(dev->dev_list.next);
1205 return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
1208 static inline struct net_device *first_net_device(struct net *net)
1210 return list_empty(&net->dev_base_head) ? NULL :
1211 net_device_entry(net->dev_base_head.next);
1214 extern int netdev_boot_setup_check(struct net_device *dev);
1215 extern unsigned long netdev_boot_base(const char *prefix, int unit);
1216 extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr);
1217 extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type);
1218 extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type);
1219 extern void dev_add_pack(struct packet_type *pt);
1220 extern void dev_remove_pack(struct packet_type *pt);
1221 extern void __dev_remove_pack(struct packet_type *pt);
1223 extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags,
1224 unsigned short mask);
1225 extern struct net_device *dev_get_by_name(struct net *net, const char *name);
1226 extern struct net_device *dev_get_by_name_rcu(struct net *net, const char *name);
1227 extern struct net_device *__dev_get_by_name(struct net *net, const char *name);
1228 extern int dev_alloc_name(struct net_device *dev, const char *name);
1229 extern int dev_open(struct net_device *dev);
1230 extern int dev_close(struct net_device *dev);
1231 extern void dev_disable_lro(struct net_device *dev);
1232 extern int dev_queue_xmit(struct sk_buff *skb);
1233 extern int register_netdevice(struct net_device *dev);
1234 extern void unregister_netdevice_queue(struct net_device *dev,
1235 struct list_head *head);
1236 extern void unregister_netdevice_many(struct list_head *head);
1237 static inline void unregister_netdevice(struct net_device *dev)
1239 unregister_netdevice_queue(dev, NULL);
1242 extern void free_netdev(struct net_device *dev);
1243 extern void synchronize_net(void);
1244 extern int register_netdevice_notifier(struct notifier_block *nb);
1245 extern int unregister_netdevice_notifier(struct notifier_block *nb);
1246 extern int init_dummy_netdev(struct net_device *dev);
1247 extern void netdev_resync_ops(struct net_device *dev);
1249 extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev);
1250 extern struct net_device *dev_get_by_index(struct net *net, int ifindex);
1251 extern struct net_device *__dev_get_by_index(struct net *net, int ifindex);
1252 extern struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex);
1253 extern int dev_restart(struct net_device *dev);
1254 #ifdef CONFIG_NETPOLL_TRAP
1255 extern int netpoll_trap(void);
1257 extern int skb_gro_receive(struct sk_buff **head,
1258 struct sk_buff *skb);
1259 extern void skb_gro_reset_offset(struct sk_buff *skb);
1261 static inline unsigned int skb_gro_offset(const struct sk_buff *skb)
1263 return NAPI_GRO_CB(skb)->data_offset;
1266 static inline unsigned int skb_gro_len(const struct sk_buff *skb)
1268 return skb->len - NAPI_GRO_CB(skb)->data_offset;
1271 static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len)
1273 NAPI_GRO_CB(skb)->data_offset += len;
1276 static inline void *skb_gro_header_fast(struct sk_buff *skb,
1277 unsigned int offset)
1279 return NAPI_GRO_CB(skb)->frag0 + offset;
1282 static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen)
1284 return NAPI_GRO_CB(skb)->frag0_len < hlen;
1287 static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen,
1288 unsigned int offset)
1290 NAPI_GRO_CB(skb)->frag0 = NULL;
1291 NAPI_GRO_CB(skb)->frag0_len = 0;
1292 return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL;
1295 static inline void *skb_gro_mac_header(struct sk_buff *skb)
1297 return NAPI_GRO_CB(skb)->frag0 ?: skb_mac_header(skb);
1300 static inline void *skb_gro_network_header(struct sk_buff *skb)
1302 return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) +
1303 skb_network_offset(skb);
1306 static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
1307 unsigned short type,
1308 const void *daddr, const void *saddr,
1311 if (!dev->header_ops || !dev->header_ops->create)
1314 return dev->header_ops->create(skb, dev, type, daddr, saddr, len);
1317 static inline int dev_parse_header(const struct sk_buff *skb,
1318 unsigned char *haddr)
1320 const struct net_device *dev = skb->dev;
1322 if (!dev->header_ops || !dev->header_ops->parse)
1324 return dev->header_ops->parse(skb, haddr);
1327 typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
1328 extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf);
1329 static inline int unregister_gifconf(unsigned int family)
1331 return register_gifconf(family, NULL);
1335 * Incoming packets are placed on per-cpu queues so that
1336 * no locking is needed.
1338 struct softnet_data {
1339 struct Qdisc *output_queue;
1340 struct list_head poll_list;
1341 struct sk_buff *completion_queue;
1343 /* Elements below can be accessed between CPUs for RPS */
1345 struct call_single_data csd ____cacheline_aligned_in_smp;
1347 struct sk_buff_head input_pkt_queue;
1348 struct napi_struct backlog;
1351 DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data);
1353 #define HAVE_NETIF_QUEUE
1355 extern void __netif_schedule(struct Qdisc *q);
1357 static inline void netif_schedule_queue(struct netdev_queue *txq)
1359 if (!test_bit(__QUEUE_STATE_XOFF, &txq->state))
1360 __netif_schedule(txq->qdisc);
1363 static inline void netif_tx_schedule_all(struct net_device *dev)
1367 for (i = 0; i < dev->num_tx_queues; i++)
1368 netif_schedule_queue(netdev_get_tx_queue(dev, i));
1371 static inline void netif_tx_start_queue(struct netdev_queue *dev_queue)
1373 clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
1377 * netif_start_queue - allow transmit
1378 * @dev: network device
1380 * Allow upper layers to call the device hard_start_xmit routine.
1382 static inline void netif_start_queue(struct net_device *dev)
1384 netif_tx_start_queue(netdev_get_tx_queue(dev, 0));
1387 static inline void netif_tx_start_all_queues(struct net_device *dev)
1391 for (i = 0; i < dev->num_tx_queues; i++) {
1392 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1393 netif_tx_start_queue(txq);
1397 static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue)
1399 #ifdef CONFIG_NETPOLL_TRAP
1400 if (netpoll_trap()) {
1401 netif_tx_start_queue(dev_queue);
1405 if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state))
1406 __netif_schedule(dev_queue->qdisc);
1410 * netif_wake_queue - restart transmit
1411 * @dev: network device
1413 * Allow upper layers to call the device hard_start_xmit routine.
1414 * Used for flow control when transmit resources are available.
1416 static inline void netif_wake_queue(struct net_device *dev)
1418 netif_tx_wake_queue(netdev_get_tx_queue(dev, 0));
1421 static inline void netif_tx_wake_all_queues(struct net_device *dev)
1425 for (i = 0; i < dev->num_tx_queues; i++) {
1426 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1427 netif_tx_wake_queue(txq);
1431 static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue)
1433 set_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
1437 * netif_stop_queue - stop transmitted packets
1438 * @dev: network device
1440 * Stop upper layers calling the device hard_start_xmit routine.
1441 * Used for flow control when transmit resources are unavailable.
1443 static inline void netif_stop_queue(struct net_device *dev)
1445 netif_tx_stop_queue(netdev_get_tx_queue(dev, 0));
1448 static inline void netif_tx_stop_all_queues(struct net_device *dev)
1452 for (i = 0; i < dev->num_tx_queues; i++) {
1453 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1454 netif_tx_stop_queue(txq);
1458 static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue)
1460 return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
1464 * netif_queue_stopped - test if transmit queue is flowblocked
1465 * @dev: network device
1467 * Test if transmit queue on device is currently unable to send.
1469 static inline int netif_queue_stopped(const struct net_device *dev)
1471 return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0));
1474 static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue)
1476 return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state);
1480 * netif_running - test if up
1481 * @dev: network device
1483 * Test if the device has been brought up.
1485 static inline int netif_running(const struct net_device *dev)
1487 return test_bit(__LINK_STATE_START, &dev->state);
1491 * Routines to manage the subqueues on a device. We only need start
1492 * stop, and a check if it's stopped. All other device management is
1493 * done at the overall netdevice level.
1494 * Also test the device if we're multiqueue.
1498 * netif_start_subqueue - allow sending packets on subqueue
1499 * @dev: network device
1500 * @queue_index: sub queue index
1502 * Start individual transmit queue of a device with multiple transmit queues.
1504 static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
1506 struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
1508 netif_tx_start_queue(txq);
1512 * netif_stop_subqueue - stop sending packets on subqueue
1513 * @dev: network device
1514 * @queue_index: sub queue index
1516 * Stop individual transmit queue of a device with multiple transmit queues.
1518 static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
1520 struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
1521 #ifdef CONFIG_NETPOLL_TRAP
1525 netif_tx_stop_queue(txq);
1529 * netif_subqueue_stopped - test status of subqueue
1530 * @dev: network device
1531 * @queue_index: sub queue index
1533 * Check individual transmit queue of a device with multiple transmit queues.
1535 static inline int __netif_subqueue_stopped(const struct net_device *dev,
1538 struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
1540 return netif_tx_queue_stopped(txq);
1543 static inline int netif_subqueue_stopped(const struct net_device *dev,
1544 struct sk_buff *skb)
1546 return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb));
1550 * netif_wake_subqueue - allow sending packets on subqueue
1551 * @dev: network device
1552 * @queue_index: sub queue index
1554 * Resume individual transmit queue of a device with multiple transmit queues.
1556 static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
1558 struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
1559 #ifdef CONFIG_NETPOLL_TRAP
1563 if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state))
1564 __netif_schedule(txq->qdisc);
1568 * netif_is_multiqueue - test if device has multiple transmit queues
1569 * @dev: network device
1571 * Check if device has multiple transmit queues
1573 static inline int netif_is_multiqueue(const struct net_device *dev)
1575 return (dev->num_tx_queues > 1);
1578 /* Use this variant when it is known for sure that it
1579 * is executing from hardware interrupt context or with hardware interrupts
1582 extern void dev_kfree_skb_irq(struct sk_buff *skb);
1584 /* Use this variant in places where it could be invoked
1585 * from either hardware interrupt or other context, with hardware interrupts
1586 * either disabled or enabled.
1588 extern void dev_kfree_skb_any(struct sk_buff *skb);
1590 #define HAVE_NETIF_RX 1
1591 extern int netif_rx(struct sk_buff *skb);
1592 extern int netif_rx_ni(struct sk_buff *skb);
1593 #define HAVE_NETIF_RECEIVE_SKB 1
1594 extern int netif_receive_skb(struct sk_buff *skb);
1595 extern gro_result_t dev_gro_receive(struct napi_struct *napi,
1596 struct sk_buff *skb);
1597 extern gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb);
1598 extern gro_result_t napi_gro_receive(struct napi_struct *napi,
1599 struct sk_buff *skb);
1600 extern void napi_reuse_skb(struct napi_struct *napi,
1601 struct sk_buff *skb);
1602 extern struct sk_buff * napi_get_frags(struct napi_struct *napi);
1603 extern gro_result_t napi_frags_finish(struct napi_struct *napi,
1604 struct sk_buff *skb,
1606 extern struct sk_buff * napi_frags_skb(struct napi_struct *napi);
1607 extern gro_result_t napi_gro_frags(struct napi_struct *napi);
1609 static inline void napi_free_frags(struct napi_struct *napi)
1611 kfree_skb(napi->skb);
1615 extern void netif_nit_deliver(struct sk_buff *skb);
1616 extern int dev_valid_name(const char *name);
1617 extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *);
1618 extern int dev_ethtool(struct net *net, struct ifreq *);
1619 extern unsigned dev_get_flags(const struct net_device *);
1620 extern int __dev_change_flags(struct net_device *, unsigned int flags);
1621 extern int dev_change_flags(struct net_device *, unsigned);
1622 extern void __dev_notify_flags(struct net_device *, unsigned int old_flags);
1623 extern int dev_change_name(struct net_device *, const char *);
1624 extern int dev_set_alias(struct net_device *, const char *, size_t);
1625 extern int dev_change_net_namespace(struct net_device *,
1626 struct net *, const char *);
1627 extern int dev_set_mtu(struct net_device *, int);
1628 extern int dev_set_mac_address(struct net_device *,
1630 extern int dev_hard_start_xmit(struct sk_buff *skb,
1631 struct net_device *dev,
1632 struct netdev_queue *txq);
1633 extern int dev_forward_skb(struct net_device *dev,
1634 struct sk_buff *skb);
1636 extern int netdev_budget;
1638 /* Called by rtnetlink.c:rtnl_unlock() */
1639 extern void netdev_run_todo(void);
1642 * dev_put - release reference to device
1643 * @dev: network device
1645 * Release reference to device to allow it to be freed.
1647 static inline void dev_put(struct net_device *dev)
1649 atomic_dec(&dev->refcnt);
1653 * dev_hold - get reference to device
1654 * @dev: network device
1656 * Hold reference to device to keep it from being freed.
1658 static inline void dev_hold(struct net_device *dev)
1660 atomic_inc(&dev->refcnt);
1663 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
1664 * and _off may be called from IRQ context, but it is caller
1665 * who is responsible for serialization of these calls.
1667 * The name carrier is inappropriate, these functions should really be
1668 * called netif_lowerlayer_*() because they represent the state of any
1669 * kind of lower layer not just hardware media.
1672 extern void linkwatch_fire_event(struct net_device *dev);
1673 extern void linkwatch_forget_dev(struct net_device *dev);
1676 * netif_carrier_ok - test if carrier present
1677 * @dev: network device
1679 * Check if carrier is present on device
1681 static inline int netif_carrier_ok(const struct net_device *dev)
1683 return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
1686 extern unsigned long dev_trans_start(struct net_device *dev);
1688 extern void __netdev_watchdog_up(struct net_device *dev);
1690 extern void netif_carrier_on(struct net_device *dev);
1692 extern void netif_carrier_off(struct net_device *dev);
1695 * netif_dormant_on - mark device as dormant.
1696 * @dev: network device
1698 * Mark device as dormant (as per RFC2863).
1700 * The dormant state indicates that the relevant interface is not
1701 * actually in a condition to pass packets (i.e., it is not 'up') but is
1702 * in a "pending" state, waiting for some external event. For "on-
1703 * demand" interfaces, this new state identifies the situation where the
1704 * interface is waiting for events to place it in the up state.
1707 static inline void netif_dormant_on(struct net_device *dev)
1709 if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state))
1710 linkwatch_fire_event(dev);
1714 * netif_dormant_off - set device as not dormant.
1715 * @dev: network device
1717 * Device is not in dormant state.
1719 static inline void netif_dormant_off(struct net_device *dev)
1721 if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state))
1722 linkwatch_fire_event(dev);
1726 * netif_dormant - test if carrier present
1727 * @dev: network device
1729 * Check if carrier is present on device
1731 static inline int netif_dormant(const struct net_device *dev)
1733 return test_bit(__LINK_STATE_DORMANT, &dev->state);
1738 * netif_oper_up - test if device is operational
1739 * @dev: network device
1741 * Check if carrier is operational
1743 static inline int netif_oper_up(const struct net_device *dev)
1745 return (dev->operstate == IF_OPER_UP ||
1746 dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
1750 * netif_device_present - is device available or removed
1751 * @dev: network device
1753 * Check if device has not been removed from system.
1755 static inline int netif_device_present(struct net_device *dev)
1757 return test_bit(__LINK_STATE_PRESENT, &dev->state);
1760 extern void netif_device_detach(struct net_device *dev);
1762 extern void netif_device_attach(struct net_device *dev);
1765 * Network interface message level settings
1767 #define HAVE_NETIF_MSG 1
1770 NETIF_MSG_DRV = 0x0001,
1771 NETIF_MSG_PROBE = 0x0002,
1772 NETIF_MSG_LINK = 0x0004,
1773 NETIF_MSG_TIMER = 0x0008,
1774 NETIF_MSG_IFDOWN = 0x0010,
1775 NETIF_MSG_IFUP = 0x0020,
1776 NETIF_MSG_RX_ERR = 0x0040,
1777 NETIF_MSG_TX_ERR = 0x0080,
1778 NETIF_MSG_TX_QUEUED = 0x0100,
1779 NETIF_MSG_INTR = 0x0200,
1780 NETIF_MSG_TX_DONE = 0x0400,
1781 NETIF_MSG_RX_STATUS = 0x0800,
1782 NETIF_MSG_PKTDATA = 0x1000,
1783 NETIF_MSG_HW = 0x2000,
1784 NETIF_MSG_WOL = 0x4000,
1787 #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
1788 #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
1789 #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
1790 #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
1791 #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
1792 #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
1793 #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
1794 #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
1795 #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
1796 #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
1797 #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
1798 #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
1799 #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
1800 #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
1801 #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
1803 static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
1806 if (debug_value < 0 || debug_value >= (sizeof(u32) * 8))
1807 return default_msg_enable_bits;
1808 if (debug_value == 0) /* no output */
1810 /* set low N bits */
1811 return (1 << debug_value) - 1;
1814 static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu)
1816 spin_lock(&txq->_xmit_lock);
1817 txq->xmit_lock_owner = cpu;
1820 static inline void __netif_tx_lock_bh(struct netdev_queue *txq)
1822 spin_lock_bh(&txq->_xmit_lock);
1823 txq->xmit_lock_owner = smp_processor_id();
1826 static inline int __netif_tx_trylock(struct netdev_queue *txq)
1828 int ok = spin_trylock(&txq->_xmit_lock);
1830 txq->xmit_lock_owner = smp_processor_id();
1834 static inline void __netif_tx_unlock(struct netdev_queue *txq)
1836 txq->xmit_lock_owner = -1;
1837 spin_unlock(&txq->_xmit_lock);
1840 static inline void __netif_tx_unlock_bh(struct netdev_queue *txq)
1842 txq->xmit_lock_owner = -1;
1843 spin_unlock_bh(&txq->_xmit_lock);
1846 static inline void txq_trans_update(struct netdev_queue *txq)
1848 if (txq->xmit_lock_owner != -1)
1849 txq->trans_start = jiffies;
1853 * netif_tx_lock - grab network device transmit lock
1854 * @dev: network device
1856 * Get network device transmit lock
1858 static inline void netif_tx_lock(struct net_device *dev)
1863 spin_lock(&dev->tx_global_lock);
1864 cpu = smp_processor_id();
1865 for (i = 0; i < dev->num_tx_queues; i++) {
1866 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1868 /* We are the only thread of execution doing a
1869 * freeze, but we have to grab the _xmit_lock in
1870 * order to synchronize with threads which are in
1871 * the ->hard_start_xmit() handler and already
1872 * checked the frozen bit.
1874 __netif_tx_lock(txq, cpu);
1875 set_bit(__QUEUE_STATE_FROZEN, &txq->state);
1876 __netif_tx_unlock(txq);
1880 static inline void netif_tx_lock_bh(struct net_device *dev)
1886 static inline void netif_tx_unlock(struct net_device *dev)
1890 for (i = 0; i < dev->num_tx_queues; i++) {
1891 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1893 /* No need to grab the _xmit_lock here. If the
1894 * queue is not stopped for another reason, we
1897 clear_bit(__QUEUE_STATE_FROZEN, &txq->state);
1898 netif_schedule_queue(txq);
1900 spin_unlock(&dev->tx_global_lock);
1903 static inline void netif_tx_unlock_bh(struct net_device *dev)
1905 netif_tx_unlock(dev);
1909 #define HARD_TX_LOCK(dev, txq, cpu) { \
1910 if ((dev->features & NETIF_F_LLTX) == 0) { \
1911 __netif_tx_lock(txq, cpu); \
1915 #define HARD_TX_UNLOCK(dev, txq) { \
1916 if ((dev->features & NETIF_F_LLTX) == 0) { \
1917 __netif_tx_unlock(txq); \
1921 static inline void netif_tx_disable(struct net_device *dev)
1927 cpu = smp_processor_id();
1928 for (i = 0; i < dev->num_tx_queues; i++) {
1929 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1931 __netif_tx_lock(txq, cpu);
1932 netif_tx_stop_queue(txq);
1933 __netif_tx_unlock(txq);
1938 static inline void netif_addr_lock(struct net_device *dev)
1940 spin_lock(&dev->addr_list_lock);
1943 static inline void netif_addr_lock_bh(struct net_device *dev)
1945 spin_lock_bh(&dev->addr_list_lock);
1948 static inline void netif_addr_unlock(struct net_device *dev)
1950 spin_unlock(&dev->addr_list_lock);
1953 static inline void netif_addr_unlock_bh(struct net_device *dev)
1955 spin_unlock_bh(&dev->addr_list_lock);
1959 * dev_addrs walker. Should be used only for read access. Call with
1960 * rcu_read_lock held.
1962 #define for_each_dev_addr(dev, ha) \
1963 list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list)
1965 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
1967 extern void ether_setup(struct net_device *dev);
1969 /* Support for loadable net-drivers */
1970 extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
1971 void (*setup)(struct net_device *),
1972 unsigned int queue_count);
1973 #define alloc_netdev(sizeof_priv, name, setup) \
1974 alloc_netdev_mq(sizeof_priv, name, setup, 1)
1975 extern int register_netdev(struct net_device *dev);
1976 extern void unregister_netdev(struct net_device *dev);
1978 /* Functions used for device addresses handling */
1979 extern int dev_addr_add(struct net_device *dev, unsigned char *addr,
1980 unsigned char addr_type);
1981 extern int dev_addr_del(struct net_device *dev, unsigned char *addr,
1982 unsigned char addr_type);
1983 extern int dev_addr_add_multiple(struct net_device *to_dev,
1984 struct net_device *from_dev,
1985 unsigned char addr_type);
1986 extern int dev_addr_del_multiple(struct net_device *to_dev,
1987 struct net_device *from_dev,
1988 unsigned char addr_type);
1990 /* Functions used for secondary unicast and multicast support */
1991 extern void dev_set_rx_mode(struct net_device *dev);
1992 extern void __dev_set_rx_mode(struct net_device *dev);
1993 extern int dev_unicast_delete(struct net_device *dev, void *addr);
1994 extern int dev_unicast_add(struct net_device *dev, void *addr);
1995 extern int dev_unicast_sync(struct net_device *to, struct net_device *from);
1996 extern void dev_unicast_unsync(struct net_device *to, struct net_device *from);
1997 extern void dev_unicast_flush(struct net_device *dev);
1998 extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all);
1999 extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly);
2000 extern int dev_mc_sync(struct net_device *to, struct net_device *from);
2001 extern void dev_mc_unsync(struct net_device *to, struct net_device *from);
2002 extern void dev_addr_discard(struct net_device *dev);
2003 extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all);
2004 extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly);
2005 extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count);
2006 extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count);
2007 extern int dev_set_promiscuity(struct net_device *dev, int inc);
2008 extern int dev_set_allmulti(struct net_device *dev, int inc);
2009 extern void netdev_state_change(struct net_device *dev);
2010 extern int netdev_bonding_change(struct net_device *dev,
2011 unsigned long event);
2012 extern void netdev_features_change(struct net_device *dev);
2013 /* Load a device via the kmod */
2014 extern void dev_load(struct net *net, const char *name);
2015 extern void dev_mcast_init(void);
2016 extern const struct net_device_stats *dev_get_stats(struct net_device *dev);
2017 extern void dev_txq_stats_fold(const struct net_device *dev, struct net_device_stats *stats);
2019 extern int netdev_max_backlog;
2020 extern int weight_p;
2021 extern int netdev_set_master(struct net_device *dev, struct net_device *master);
2022 extern int skb_checksum_help(struct sk_buff *skb);
2023 extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
2025 extern void netdev_rx_csum_fault(struct net_device *dev);
2027 static inline void netdev_rx_csum_fault(struct net_device *dev)
2031 /* rx skb timestamps */
2032 extern void net_enable_timestamp(void);
2033 extern void net_disable_timestamp(void);
2035 #ifdef CONFIG_PROC_FS
2036 extern void *dev_seq_start(struct seq_file *seq, loff_t *pos);
2037 extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
2038 extern void dev_seq_stop(struct seq_file *seq, void *v);
2041 extern int netdev_class_create_file(struct class_attribute *class_attr);
2042 extern void netdev_class_remove_file(struct class_attribute *class_attr);
2044 extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len);
2046 extern void linkwatch_run_queue(void);
2048 unsigned long netdev_increment_features(unsigned long all, unsigned long one,
2049 unsigned long mask);
2050 unsigned long netdev_fix_features(unsigned long features, const char *name);
2052 void netif_stacked_transfer_operstate(const struct net_device *rootdev,
2053 struct net_device *dev);
2055 static inline int net_gso_ok(int features, int gso_type)
2057 int feature = gso_type << NETIF_F_GSO_SHIFT;
2058 return (features & feature) == feature;
2061 static inline int skb_gso_ok(struct sk_buff *skb, int features)
2063 return net_gso_ok(features, skb_shinfo(skb)->gso_type) &&
2064 (!skb_has_frags(skb) || (features & NETIF_F_FRAGLIST));
2067 static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
2069 return skb_is_gso(skb) &&
2070 (!skb_gso_ok(skb, dev->features) ||
2071 unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
2074 static inline void netif_set_gso_max_size(struct net_device *dev,
2077 dev->gso_max_size = size;
2080 static inline void skb_bond_set_mac_by_master(struct sk_buff *skb,
2081 struct net_device *master)
2083 if (skb->pkt_type == PACKET_HOST) {
2084 u16 *dest = (u16 *) eth_hdr(skb)->h_dest;
2086 memcpy(dest, master->dev_addr, ETH_ALEN);
2090 /* On bonding slaves other than the currently active slave, suppress
2091 * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and
2092 * ARP on active-backup slaves with arp_validate enabled.
2094 static inline int skb_bond_should_drop(struct sk_buff *skb,
2095 struct net_device *master)
2098 struct net_device *dev = skb->dev;
2100 if (master->priv_flags & IFF_MASTER_ARPMON)
2101 dev->last_rx = jiffies;
2103 if ((master->priv_flags & IFF_MASTER_ALB) && master->br_port) {
2104 /* Do address unmangle. The local destination address
2105 * will be always the one master has. Provides the right
2106 * functionality in a bridge.
2108 skb_bond_set_mac_by_master(skb, master);
2111 if (dev->priv_flags & IFF_SLAVE_INACTIVE) {
2112 if ((dev->priv_flags & IFF_SLAVE_NEEDARP) &&
2113 skb->protocol == __cpu_to_be16(ETH_P_ARP))
2116 if (master->priv_flags & IFF_MASTER_ALB) {
2117 if (skb->pkt_type != PACKET_BROADCAST &&
2118 skb->pkt_type != PACKET_MULTICAST)
2121 if (master->priv_flags & IFF_MASTER_8023AD &&
2122 skb->protocol == __cpu_to_be16(ETH_P_SLOW))
2131 extern struct pernet_operations __net_initdata loopback_net_ops;
2133 static inline int dev_ethtool_get_settings(struct net_device *dev,
2134 struct ethtool_cmd *cmd)
2136 if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings)
2138 return dev->ethtool_ops->get_settings(dev, cmd);
2141 static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev)
2143 if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum)
2145 return dev->ethtool_ops->get_rx_csum(dev);
2148 static inline u32 dev_ethtool_get_flags(struct net_device *dev)
2150 if (!dev->ethtool_ops || !dev->ethtool_ops->get_flags)
2152 return dev->ethtool_ops->get_flags(dev);
2155 /* Logging, debugging and troubleshooting/diagnostic helpers. */
2157 /* netdev_printk helpers, similar to dev_printk */
2159 static inline const char *netdev_name(const struct net_device *dev)
2161 if (dev->reg_state != NETREG_REGISTERED)
2162 return "(unregistered net_device)";
2166 #define netdev_printk(level, netdev, format, args...) \
2167 dev_printk(level, (netdev)->dev.parent, \
2169 netdev_name(netdev), ##args)
2171 #define netdev_emerg(dev, format, args...) \
2172 netdev_printk(KERN_EMERG, dev, format, ##args)
2173 #define netdev_alert(dev, format, args...) \
2174 netdev_printk(KERN_ALERT, dev, format, ##args)
2175 #define netdev_crit(dev, format, args...) \
2176 netdev_printk(KERN_CRIT, dev, format, ##args)
2177 #define netdev_err(dev, format, args...) \
2178 netdev_printk(KERN_ERR, dev, format, ##args)
2179 #define netdev_warn(dev, format, args...) \
2180 netdev_printk(KERN_WARNING, dev, format, ##args)
2181 #define netdev_notice(dev, format, args...) \
2182 netdev_printk(KERN_NOTICE, dev, format, ##args)
2183 #define netdev_info(dev, format, args...) \
2184 netdev_printk(KERN_INFO, dev, format, ##args)
2187 #define netdev_dbg(__dev, format, args...) \
2188 netdev_printk(KERN_DEBUG, __dev, format, ##args)
2189 #elif defined(CONFIG_DYNAMIC_DEBUG)
2190 #define netdev_dbg(__dev, format, args...) \
2192 dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \
2193 netdev_name(__dev), ##args); \
2196 #define netdev_dbg(__dev, format, args...) \
2199 netdev_printk(KERN_DEBUG, __dev, format, ##args); \
2204 #if defined(VERBOSE_DEBUG)
2205 #define netdev_vdbg netdev_dbg
2208 #define netdev_vdbg(dev, format, args...) \
2211 netdev_printk(KERN_DEBUG, dev, format, ##args); \
2217 * netdev_WARN() acts like dev_printk(), but with the key difference
2218 * of using a WARN/WARN_ON to get the message out, including the
2219 * file/line information and a backtrace.
2221 #define netdev_WARN(dev, format, args...) \
2222 WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args);
2224 /* netif printk helpers, similar to netdev_printk */
2226 #define netif_printk(priv, type, level, dev, fmt, args...) \
2228 if (netif_msg_##type(priv)) \
2229 netdev_printk(level, (dev), fmt, ##args); \
2232 #define netif_emerg(priv, type, dev, fmt, args...) \
2233 netif_printk(priv, type, KERN_EMERG, dev, fmt, ##args)
2234 #define netif_alert(priv, type, dev, fmt, args...) \
2235 netif_printk(priv, type, KERN_ALERT, dev, fmt, ##args)
2236 #define netif_crit(priv, type, dev, fmt, args...) \
2237 netif_printk(priv, type, KERN_CRIT, dev, fmt, ##args)
2238 #define netif_err(priv, type, dev, fmt, args...) \
2239 netif_printk(priv, type, KERN_ERR, dev, fmt, ##args)
2240 #define netif_warn(priv, type, dev, fmt, args...) \
2241 netif_printk(priv, type, KERN_WARNING, dev, fmt, ##args)
2242 #define netif_notice(priv, type, dev, fmt, args...) \
2243 netif_printk(priv, type, KERN_NOTICE, dev, fmt, ##args)
2244 #define netif_info(priv, type, dev, fmt, args...) \
2245 netif_printk(priv, type, KERN_INFO, (dev), fmt, ##args)
2248 #define netif_dbg(priv, type, dev, format, args...) \
2249 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args)
2250 #elif defined(CONFIG_DYNAMIC_DEBUG)
2251 #define netif_dbg(priv, type, netdev, format, args...) \
2253 if (netif_msg_##type(priv)) \
2254 dynamic_dev_dbg((netdev)->dev.parent, \
2256 netdev_name(netdev), ##args); \
2259 #define netif_dbg(priv, type, dev, format, args...) \
2262 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
2267 #if defined(VERBOSE_DEBUG)
2268 #define netif_vdbg netdev_dbg
2270 #define netif_vdbg(priv, type, dev, format, args...) \
2273 netif_printk(KERN_DEBUG, dev, format, ##args); \
2278 #endif /* __KERNEL__ */
2280 #endif /* _LINUX_NETDEVICE_H */