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 netdev_hw_addr {
232 struct list_head list;
233 unsigned char addr[MAX_ADDR_LEN];
235 #define NETDEV_HW_ADDR_T_LAN 1
236 #define NETDEV_HW_ADDR_T_SAN 2
237 #define NETDEV_HW_ADDR_T_SLAVE 3
238 #define NETDEV_HW_ADDR_T_UNICAST 4
239 #define NETDEV_HW_ADDR_T_MULTICAST 5
243 struct rcu_head rcu_head;
246 struct netdev_hw_addr_list {
247 struct list_head list;
251 #define netdev_hw_addr_list_count(l) ((l)->count)
252 #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0)
253 #define netdev_hw_addr_list_for_each(ha, l) \
254 list_for_each_entry(ha, &(l)->list, list)
256 #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc)
257 #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc)
258 #define netdev_for_each_uc_addr(ha, dev) \
259 netdev_hw_addr_list_for_each(ha, &(dev)->uc)
261 #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc)
262 #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc)
263 #define netdev_for_each_mc_addr(ha, dev) \
264 netdev_hw_addr_list_for_each(ha, &(dev)->mc)
267 struct hh_cache *hh_next; /* Next entry */
268 atomic_t hh_refcnt; /* number of users */
270 * We want hh_output, hh_len, hh_lock and hh_data be a in a separate
272 * They are mostly read, but hh_refcnt may be changed quite frequently,
273 * incurring cache line ping pongs.
275 __be16 hh_type ____cacheline_aligned_in_smp;
276 /* protocol identifier, f.e ETH_P_IP
277 * NOTE: For VLANs, this will be the
278 * encapuslated type. --BLG
280 u16 hh_len; /* length of header */
281 int (*hh_output)(struct sk_buff *skb);
284 /* cached hardware header; allow for machine alignment needs. */
285 #define HH_DATA_MOD 16
286 #define HH_DATA_OFF(__len) \
287 (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
288 #define HH_DATA_ALIGN(__len) \
289 (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
290 unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)];
293 /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
295 * dev->hard_header_len ? (dev->hard_header_len +
296 * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
298 * We could use other alignment values, but we must maintain the
299 * relationship HH alignment <= LL alignment.
301 * LL_ALLOCATED_SPACE also takes into account the tailroom the device
304 #define LL_RESERVED_SPACE(dev) \
305 ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
306 #define LL_RESERVED_SPACE_EXTRA(dev,extra) \
307 ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
308 #define LL_ALLOCATED_SPACE(dev) \
309 ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
312 int (*create) (struct sk_buff *skb, struct net_device *dev,
313 unsigned short type, const void *daddr,
314 const void *saddr, unsigned len);
315 int (*parse)(const struct sk_buff *skb, unsigned char *haddr);
316 int (*rebuild)(struct sk_buff *skb);
317 #define HAVE_HEADER_CACHE
318 int (*cache)(const struct neighbour *neigh, struct hh_cache *hh);
319 void (*cache_update)(struct hh_cache *hh,
320 const struct net_device *dev,
321 const unsigned char *haddr);
324 /* These flag bits are private to the generic network queueing
325 * layer, they may not be explicitly referenced by any other
329 enum netdev_state_t {
331 __LINK_STATE_PRESENT,
332 __LINK_STATE_NOCARRIER,
333 __LINK_STATE_LINKWATCH_PENDING,
334 __LINK_STATE_DORMANT,
339 * This structure holds at boot time configured netdevice settings. They
340 * are then used in the device probing.
342 struct netdev_boot_setup {
346 #define NETDEV_BOOT_SETUP_MAX 8
348 extern int __init netdev_boot_setup(char *str);
351 * Structure for NAPI scheduling similar to tasklet but with weighting
354 /* The poll_list must only be managed by the entity which
355 * changes the state of the NAPI_STATE_SCHED bit. This means
356 * whoever atomically sets that bit can add this napi_struct
357 * to the per-cpu poll_list, and whoever clears that bit
358 * can remove from the list right before clearing the bit.
360 struct list_head poll_list;
364 int (*poll)(struct napi_struct *, int);
365 #ifdef CONFIG_NETPOLL
366 spinlock_t poll_lock;
370 unsigned int gro_count;
372 struct net_device *dev;
373 struct list_head dev_list;
374 struct sk_buff *gro_list;
379 NAPI_STATE_SCHED, /* Poll is scheduled */
380 NAPI_STATE_DISABLE, /* Disable pending */
381 NAPI_STATE_NPSVC, /* Netpoll - don't dequeue from poll_list */
391 typedef enum gro_result gro_result_t;
393 extern void __napi_schedule(struct napi_struct *n);
395 static inline int napi_disable_pending(struct napi_struct *n)
397 return test_bit(NAPI_STATE_DISABLE, &n->state);
401 * napi_schedule_prep - check if napi can be scheduled
404 * Test if NAPI routine is already running, and if not mark
405 * it as running. This is used as a condition variable
406 * insure only one NAPI poll instance runs. We also make
407 * sure there is no pending NAPI disable.
409 static inline int napi_schedule_prep(struct napi_struct *n)
411 return !napi_disable_pending(n) &&
412 !test_and_set_bit(NAPI_STATE_SCHED, &n->state);
416 * napi_schedule - schedule NAPI poll
419 * Schedule NAPI poll routine to be called if it is not already
422 static inline void napi_schedule(struct napi_struct *n)
424 if (napi_schedule_prep(n))
428 /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */
429 static inline int napi_reschedule(struct napi_struct *napi)
431 if (napi_schedule_prep(napi)) {
432 __napi_schedule(napi);
439 * napi_complete - NAPI processing complete
442 * Mark NAPI processing as complete.
444 extern void __napi_complete(struct napi_struct *n);
445 extern void napi_complete(struct napi_struct *n);
448 * napi_disable - prevent NAPI from scheduling
451 * Stop NAPI from being scheduled on this context.
452 * Waits till any outstanding processing completes.
454 static inline void napi_disable(struct napi_struct *n)
456 set_bit(NAPI_STATE_DISABLE, &n->state);
457 while (test_and_set_bit(NAPI_STATE_SCHED, &n->state))
459 clear_bit(NAPI_STATE_DISABLE, &n->state);
463 * napi_enable - enable NAPI scheduling
466 * Resume NAPI from being scheduled on this context.
467 * Must be paired with napi_disable.
469 static inline void napi_enable(struct napi_struct *n)
471 BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));
472 smp_mb__before_clear_bit();
473 clear_bit(NAPI_STATE_SCHED, &n->state);
478 * napi_synchronize - wait until NAPI is not running
481 * Wait until NAPI is done being scheduled on this context.
482 * Waits till any outstanding processing completes but
483 * does not disable future activations.
485 static inline void napi_synchronize(const struct napi_struct *n)
487 while (test_bit(NAPI_STATE_SCHED, &n->state))
491 # define napi_synchronize(n) barrier()
494 enum netdev_queue_state_t {
496 __QUEUE_STATE_FROZEN,
499 struct netdev_queue {
503 struct net_device *dev;
506 struct Qdisc *qdisc_sleeping;
510 spinlock_t _xmit_lock ____cacheline_aligned_in_smp;
513 * please use this field instead of dev->trans_start
515 unsigned long trans_start;
516 unsigned long tx_bytes;
517 unsigned long tx_packets;
518 unsigned long tx_dropped;
519 } ____cacheline_aligned_in_smp;
523 * This structure holds an RPS map which can be of variable length. The
524 * map is an array of CPUs.
531 #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16)))
533 /* This structure contains an instance of an RX queue. */
534 struct netdev_rx_queue {
535 struct rps_map *rps_map;
537 struct netdev_rx_queue *first;
539 } ____cacheline_aligned_in_smp;
543 * This structure defines the management hooks for network devices.
544 * The following hooks can be defined; unless noted otherwise, they are
545 * optional and can be filled with a null pointer.
547 * int (*ndo_init)(struct net_device *dev);
548 * This function is called once when network device is registered.
549 * The network device can use this to any late stage initializaton
550 * or semantic validattion. It can fail with an error code which will
551 * be propogated back to register_netdev
553 * void (*ndo_uninit)(struct net_device *dev);
554 * This function is called when device is unregistered or when registration
555 * fails. It is not called if init fails.
557 * int (*ndo_open)(struct net_device *dev);
558 * This function is called when network device transistions to the up
561 * int (*ndo_stop)(struct net_device *dev);
562 * This function is called when network device transistions to the down
565 * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb,
566 * struct net_device *dev);
567 * Called when a packet needs to be transmitted.
568 * Must return NETDEV_TX_OK , NETDEV_TX_BUSY.
569 * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX)
570 * Required can not be NULL.
572 * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb);
573 * Called to decide which queue to when device supports multiple
576 * void (*ndo_change_rx_flags)(struct net_device *dev, int flags);
577 * This function is called to allow device receiver to make
578 * changes to configuration when multicast or promiscious is enabled.
580 * void (*ndo_set_rx_mode)(struct net_device *dev);
581 * This function is called device changes address list filtering.
583 * void (*ndo_set_multicast_list)(struct net_device *dev);
584 * This function is called when the multicast address list changes.
586 * int (*ndo_set_mac_address)(struct net_device *dev, void *addr);
587 * This function is called when the Media Access Control address
588 * needs to be changed. If this interface is not defined, the
589 * mac address can not be changed.
591 * int (*ndo_validate_addr)(struct net_device *dev);
592 * Test if Media Access Control address is valid for the device.
594 * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
595 * Called when a user request an ioctl which can't be handled by
596 * the generic interface code. If not defined ioctl's return
597 * not supported error code.
599 * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map);
600 * Used to set network devices bus interface parameters. This interface
601 * is retained for legacy reason, new devices should use the bus
602 * interface (PCI) for low level management.
604 * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu);
605 * Called when a user wants to change the Maximum Transfer Unit
606 * of a device. If not defined, any request to change MTU will
607 * will return an error.
609 * void (*ndo_tx_timeout)(struct net_device *dev);
610 * Callback uses when the transmitter has not made any progress
611 * for dev->watchdog ticks.
613 * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
614 * Called when a user wants to get the network device usage
615 * statistics. If not defined, the counters in dev->stats will
618 * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp);
619 * If device support VLAN receive accleration
620 * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called
621 * when vlan groups for the device changes. Note: grp is NULL
622 * if no vlan's groups are being used.
624 * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid);
625 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
626 * this function is called when a VLAN id is registered.
628 * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid);
629 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
630 * this function is called when a VLAN id is unregistered.
632 * void (*ndo_poll_controller)(struct net_device *dev);
634 * SR-IOV management functions.
635 * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac);
636 * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos);
637 * int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate);
638 * int (*ndo_get_vf_config)(struct net_device *dev,
639 * int vf, struct ifla_vf_info *ivf);
641 #define HAVE_NET_DEVICE_OPS
642 struct net_device_ops {
643 int (*ndo_init)(struct net_device *dev);
644 void (*ndo_uninit)(struct net_device *dev);
645 int (*ndo_open)(struct net_device *dev);
646 int (*ndo_stop)(struct net_device *dev);
647 netdev_tx_t (*ndo_start_xmit) (struct sk_buff *skb,
648 struct net_device *dev);
649 u16 (*ndo_select_queue)(struct net_device *dev,
650 struct sk_buff *skb);
651 void (*ndo_change_rx_flags)(struct net_device *dev,
653 void (*ndo_set_rx_mode)(struct net_device *dev);
654 void (*ndo_set_multicast_list)(struct net_device *dev);
655 int (*ndo_set_mac_address)(struct net_device *dev,
657 int (*ndo_validate_addr)(struct net_device *dev);
658 int (*ndo_do_ioctl)(struct net_device *dev,
659 struct ifreq *ifr, int cmd);
660 int (*ndo_set_config)(struct net_device *dev,
662 int (*ndo_change_mtu)(struct net_device *dev,
664 int (*ndo_neigh_setup)(struct net_device *dev,
665 struct neigh_parms *);
666 void (*ndo_tx_timeout) (struct net_device *dev);
668 struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
670 void (*ndo_vlan_rx_register)(struct net_device *dev,
671 struct vlan_group *grp);
672 void (*ndo_vlan_rx_add_vid)(struct net_device *dev,
674 void (*ndo_vlan_rx_kill_vid)(struct net_device *dev,
676 #ifdef CONFIG_NET_POLL_CONTROLLER
677 void (*ndo_poll_controller)(struct net_device *dev);
679 int (*ndo_set_vf_mac)(struct net_device *dev,
681 int (*ndo_set_vf_vlan)(struct net_device *dev,
682 int queue, u16 vlan, u8 qos);
683 int (*ndo_set_vf_tx_rate)(struct net_device *dev,
685 int (*ndo_get_vf_config)(struct net_device *dev,
687 struct ifla_vf_info *ivf);
688 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
689 int (*ndo_fcoe_enable)(struct net_device *dev);
690 int (*ndo_fcoe_disable)(struct net_device *dev);
691 int (*ndo_fcoe_ddp_setup)(struct net_device *dev,
693 struct scatterlist *sgl,
695 int (*ndo_fcoe_ddp_done)(struct net_device *dev,
697 #define NETDEV_FCOE_WWNN 0
698 #define NETDEV_FCOE_WWPN 1
699 int (*ndo_fcoe_get_wwn)(struct net_device *dev,
705 * The DEVICE structure.
706 * Actually, this whole structure is a big mistake. It mixes I/O
707 * data with strictly "high-level" data, and it has to know about
708 * almost every data structure used in the INET module.
710 * FIXME: cleanup struct net_device such that network protocol info
717 * This is the first field of the "visible" part of this structure
718 * (i.e. as seen by users in the "Space.c" file). It is the name
722 /* device name hash chain */
723 struct hlist_node name_hlist;
728 * I/O specific fields
729 * FIXME: Merge these and struct ifmap into one
731 unsigned long mem_end; /* shared mem end */
732 unsigned long mem_start; /* shared mem start */
733 unsigned long base_addr; /* device I/O address */
734 unsigned int irq; /* device IRQ number */
737 * Some hardware also needs these fields, but they are not
738 * part of the usual set specified in Space.c.
741 unsigned char if_port; /* Selectable AUI, TP,..*/
742 unsigned char dma; /* DMA channel */
746 struct list_head dev_list;
747 struct list_head napi_list;
748 struct list_head unreg_list;
750 /* Net device features */
751 unsigned long features;
752 #define NETIF_F_SG 1 /* Scatter/gather IO. */
753 #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
754 #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
755 #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
756 #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
757 #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
758 #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
759 #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
760 #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
761 #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
762 #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
763 #define NETIF_F_GSO 2048 /* Enable software GSO. */
764 #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
765 /* do not use LLTX in new drivers */
766 #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
767 #define NETIF_F_GRO 16384 /* Generic receive offload */
768 #define NETIF_F_LRO 32768 /* large receive offload */
770 /* the GSO_MASK reserves bits 16 through 23 */
771 #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */
772 #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */
773 #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
774 #define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */
775 #define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */
777 /* Segmentation offload features */
778 #define NETIF_F_GSO_SHIFT 16
779 #define NETIF_F_GSO_MASK 0x00ff0000
780 #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
781 #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
782 #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
783 #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
784 #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
785 #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT)
787 /* List of features with software fallbacks. */
788 #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
791 #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
792 #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
793 #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
794 #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
797 * If one device supports one of these features, then enable them
798 * for all in netdev_increment_features.
800 #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
801 NETIF_F_SG | NETIF_F_HIGHDMA | \
804 /* Interface index. Unique device identifier */
808 struct net_device_stats stats;
810 #ifdef CONFIG_WIRELESS_EXT
811 /* List of functions to handle Wireless Extensions (instead of ioctl).
812 * See <net/iw_handler.h> for details. Jean II */
813 const struct iw_handler_def * wireless_handlers;
814 /* Instance data managed by the core of Wireless Extensions. */
815 struct iw_public_data * wireless_data;
817 /* Management operations */
818 const struct net_device_ops *netdev_ops;
819 const struct ethtool_ops *ethtool_ops;
821 /* Hardware header description */
822 const struct header_ops *header_ops;
824 unsigned int flags; /* interface flags (a la BSD) */
825 unsigned short gflags;
826 unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */
827 unsigned short padded; /* How much padding added by alloc_netdev() */
829 unsigned char operstate; /* RFC2863 operstate */
830 unsigned char link_mode; /* mapping policy to operstate */
832 unsigned mtu; /* interface MTU value */
833 unsigned short type; /* interface hardware type */
834 unsigned short hard_header_len; /* hardware hdr length */
836 /* extra head- and tailroom the hardware may need, but not in all cases
837 * can this be guaranteed, especially tailroom. Some cases also use
838 * LL_MAX_HEADER instead to allocate the skb.
840 unsigned short needed_headroom;
841 unsigned short needed_tailroom;
843 struct net_device *master; /* Pointer to master device of a group,
844 * which this device is member of.
847 /* Interface address info. */
848 unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */
849 unsigned char addr_len; /* hardware address length */
850 unsigned short dev_id; /* for shared network cards */
852 spinlock_t addr_list_lock;
853 struct netdev_hw_addr_list uc; /* Unicast mac addresses */
854 struct netdev_hw_addr_list mc; /* Multicast mac addresses */
856 unsigned int promiscuity;
857 unsigned int allmulti;
860 /* Protocol specific pointers */
862 #ifdef CONFIG_NET_DSA
863 void *dsa_ptr; /* dsa specific data */
865 void *atalk_ptr; /* AppleTalk link */
866 void *ip_ptr; /* IPv4 specific data */
867 void *dn_ptr; /* DECnet specific data */
868 void *ip6_ptr; /* IPv6 specific data */
869 void *ec_ptr; /* Econet specific data */
870 void *ax25_ptr; /* AX.25 specific data */
871 struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data,
872 assign before registering */
875 * Cache line mostly used on receive path (including eth_type_trans())
877 unsigned long last_rx; /* Time of last Rx */
878 /* Interface address info used in eth_type_trans() */
879 unsigned char *dev_addr; /* hw address, (before bcast
880 because most packets are
883 struct netdev_hw_addr_list dev_addrs; /* list of device
886 unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
889 struct kset *queues_kset;
891 struct netdev_rx_queue *_rx;
893 /* Number of RX queues allocated at alloc_netdev_mq() time */
894 unsigned int num_rx_queues;
897 struct netdev_queue rx_queue;
899 struct netdev_queue *_tx ____cacheline_aligned_in_smp;
901 /* Number of TX queues allocated at alloc_netdev_mq() time */
902 unsigned int num_tx_queues;
904 /* Number of TX queues currently active in device */
905 unsigned int real_num_tx_queues;
907 /* root qdisc from userspace point of view */
910 unsigned long tx_queue_len; /* Max frames per queue allowed */
911 spinlock_t tx_global_lock;
913 * One part is mostly used on xmit path (device)
915 /* These may be needed for future network-power-down code. */
918 * trans_start here is expensive for high speed devices on SMP,
919 * please use netdev_queue->trans_start instead.
921 unsigned long trans_start; /* Time (in jiffies) of last Tx */
923 int watchdog_timeo; /* used by dev_watchdog() */
924 struct timer_list watchdog_timer;
926 /* Number of references to this device */
927 atomic_t refcnt ____cacheline_aligned_in_smp;
929 /* delayed register/unregister */
930 struct list_head todo_list;
931 /* device index hash chain */
932 struct hlist_node index_hlist;
934 struct list_head link_watch_list;
936 /* register/unregister state machine */
937 enum { NETREG_UNINITIALIZED=0,
938 NETREG_REGISTERED, /* completed register_netdevice */
939 NETREG_UNREGISTERING, /* called unregister_netdevice */
940 NETREG_UNREGISTERED, /* completed unregister todo */
941 NETREG_RELEASED, /* called free_netdev */
942 NETREG_DUMMY, /* dummy device for NAPI poll */
946 RTNL_LINK_INITIALIZED,
947 RTNL_LINK_INITIALIZING,
948 } rtnl_link_state:16;
950 /* Called from unregister, can be used to call free_netdev */
951 void (*destructor)(struct net_device *dev);
953 #ifdef CONFIG_NETPOLL
954 struct netpoll_info *npinfo;
958 /* Network namespace this network device is inside */
962 /* mid-layer private */
966 struct net_bridge_port *br_port;
968 struct macvlan_port *macvlan_port;
970 struct garp_port *garp_port;
972 /* class/net/name entry */
974 /* space for optional device, statistics, and wireless sysfs groups */
975 const struct attribute_group *sysfs_groups[4];
977 /* rtnetlink link ops */
978 const struct rtnl_link_ops *rtnl_link_ops;
980 /* VLAN feature mask */
981 unsigned long vlan_features;
983 /* for setting kernel sock attribute on TCP connection setup */
984 #define GSO_MAX_SIZE 65536
985 unsigned int gso_max_size;
988 /* Data Center Bridging netlink ops */
989 const struct dcbnl_rtnl_ops *dcbnl_ops;
992 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
993 /* max exchange id for FCoE LRO by ddp */
994 unsigned int fcoe_ddp_xid;
996 /* n-tuple filter list attached to this device */
997 struct ethtool_rx_ntuple_list ethtool_ntuple_list;
999 #define to_net_dev(d) container_of(d, struct net_device, dev)
1001 #define NETDEV_ALIGN 32
1004 struct netdev_queue *netdev_get_tx_queue(const struct net_device *dev,
1007 return &dev->_tx[index];
1010 static inline void netdev_for_each_tx_queue(struct net_device *dev,
1011 void (*f)(struct net_device *,
1012 struct netdev_queue *,
1018 for (i = 0; i < dev->num_tx_queues; i++)
1019 f(dev, &dev->_tx[i], arg);
1023 * Net namespace inlines
1026 struct net *dev_net(const struct net_device *dev)
1028 #ifdef CONFIG_NET_NS
1036 void dev_net_set(struct net_device *dev, struct net *net)
1038 #ifdef CONFIG_NET_NS
1039 release_net(dev->nd_net);
1040 dev->nd_net = hold_net(net);
1044 static inline bool netdev_uses_dsa_tags(struct net_device *dev)
1046 #ifdef CONFIG_NET_DSA_TAG_DSA
1047 if (dev->dsa_ptr != NULL)
1048 return dsa_uses_dsa_tags(dev->dsa_ptr);
1054 #ifndef CONFIG_NET_NS
1055 static inline void skb_set_dev(struct sk_buff *skb, struct net_device *dev)
1059 #else /* CONFIG_NET_NS */
1060 void skb_set_dev(struct sk_buff *skb, struct net_device *dev);
1063 static inline bool netdev_uses_trailer_tags(struct net_device *dev)
1065 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1066 if (dev->dsa_ptr != NULL)
1067 return dsa_uses_trailer_tags(dev->dsa_ptr);
1074 * netdev_priv - access network device private data
1075 * @dev: network device
1077 * Get network device private data
1079 static inline void *netdev_priv(const struct net_device *dev)
1081 return (char *)dev + ALIGN(sizeof(struct net_device), NETDEV_ALIGN);
1084 /* Set the sysfs physical device reference for the network logical device
1085 * if set prior to registration will cause a symlink during initialization.
1087 #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
1089 /* Set the sysfs device type for the network logical device to allow
1090 * fin grained indentification of different network device types. For
1091 * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc.
1093 #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype))
1096 * netif_napi_add - initialize a napi context
1097 * @dev: network device
1098 * @napi: napi context
1099 * @poll: polling function
1100 * @weight: default weight
1102 * netif_napi_add() must be used to initialize a napi context prior to calling
1103 * *any* of the other napi related functions.
1105 void netif_napi_add(struct net_device *dev, struct napi_struct *napi,
1106 int (*poll)(struct napi_struct *, int), int weight);
1109 * netif_napi_del - remove a napi context
1110 * @napi: napi context
1112 * netif_napi_del() removes a napi context from the network device napi list
1114 void netif_napi_del(struct napi_struct *napi);
1116 struct napi_gro_cb {
1117 /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
1120 /* Length of frag0. */
1121 unsigned int frag0_len;
1123 /* This indicates where we are processing relative to skb->data. */
1126 /* This is non-zero if the packet may be of the same flow. */
1129 /* This is non-zero if the packet cannot be merged with the new skb. */
1132 /* Number of segments aggregated. */
1139 #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
1141 struct packet_type {
1142 __be16 type; /* This is really htons(ether_type). */
1143 struct net_device *dev; /* NULL is wildcarded here */
1144 int (*func) (struct sk_buff *,
1145 struct net_device *,
1146 struct packet_type *,
1147 struct net_device *);
1148 struct sk_buff *(*gso_segment)(struct sk_buff *skb,
1150 int (*gso_send_check)(struct sk_buff *skb);
1151 struct sk_buff **(*gro_receive)(struct sk_buff **head,
1152 struct sk_buff *skb);
1153 int (*gro_complete)(struct sk_buff *skb);
1154 void *af_packet_priv;
1155 struct list_head list;
1158 #include <linux/interrupt.h>
1159 #include <linux/notifier.h>
1161 extern rwlock_t dev_base_lock; /* Device list lock */
1164 #define for_each_netdev(net, d) \
1165 list_for_each_entry(d, &(net)->dev_base_head, dev_list)
1166 #define for_each_netdev_reverse(net, d) \
1167 list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list)
1168 #define for_each_netdev_rcu(net, d) \
1169 list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list)
1170 #define for_each_netdev_safe(net, d, n) \
1171 list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
1172 #define for_each_netdev_continue(net, d) \
1173 list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
1174 #define for_each_netdev_continue_rcu(net, d) \
1175 list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list)
1176 #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
1178 static inline struct net_device *next_net_device(struct net_device *dev)
1180 struct list_head *lh;
1184 lh = dev->dev_list.next;
1185 return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
1188 static inline struct net_device *next_net_device_rcu(struct net_device *dev)
1190 struct list_head *lh;
1194 lh = rcu_dereference(dev->dev_list.next);
1195 return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
1198 static inline struct net_device *first_net_device(struct net *net)
1200 return list_empty(&net->dev_base_head) ? NULL :
1201 net_device_entry(net->dev_base_head.next);
1204 extern int netdev_boot_setup_check(struct net_device *dev);
1205 extern unsigned long netdev_boot_base(const char *prefix, int unit);
1206 extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr);
1207 extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type);
1208 extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type);
1209 extern void dev_add_pack(struct packet_type *pt);
1210 extern void dev_remove_pack(struct packet_type *pt);
1211 extern void __dev_remove_pack(struct packet_type *pt);
1213 extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags,
1214 unsigned short mask);
1215 extern struct net_device *dev_get_by_name(struct net *net, const char *name);
1216 extern struct net_device *dev_get_by_name_rcu(struct net *net, const char *name);
1217 extern struct net_device *__dev_get_by_name(struct net *net, const char *name);
1218 extern int dev_alloc_name(struct net_device *dev, const char *name);
1219 extern int dev_open(struct net_device *dev);
1220 extern int dev_close(struct net_device *dev);
1221 extern void dev_disable_lro(struct net_device *dev);
1222 extern int dev_queue_xmit(struct sk_buff *skb);
1223 extern int register_netdevice(struct net_device *dev);
1224 extern void unregister_netdevice_queue(struct net_device *dev,
1225 struct list_head *head);
1226 extern void unregister_netdevice_many(struct list_head *head);
1227 static inline void unregister_netdevice(struct net_device *dev)
1229 unregister_netdevice_queue(dev, NULL);
1232 extern void free_netdev(struct net_device *dev);
1233 extern void synchronize_net(void);
1234 extern int register_netdevice_notifier(struct notifier_block *nb);
1235 extern int unregister_netdevice_notifier(struct notifier_block *nb);
1236 extern int init_dummy_netdev(struct net_device *dev);
1237 extern void netdev_resync_ops(struct net_device *dev);
1239 extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev);
1240 extern struct net_device *dev_get_by_index(struct net *net, int ifindex);
1241 extern struct net_device *__dev_get_by_index(struct net *net, int ifindex);
1242 extern struct net_device *dev_get_by_index_rcu(struct net *net, int ifindex);
1243 extern int dev_restart(struct net_device *dev);
1244 #ifdef CONFIG_NETPOLL_TRAP
1245 extern int netpoll_trap(void);
1247 extern int skb_gro_receive(struct sk_buff **head,
1248 struct sk_buff *skb);
1249 extern void skb_gro_reset_offset(struct sk_buff *skb);
1251 static inline unsigned int skb_gro_offset(const struct sk_buff *skb)
1253 return NAPI_GRO_CB(skb)->data_offset;
1256 static inline unsigned int skb_gro_len(const struct sk_buff *skb)
1258 return skb->len - NAPI_GRO_CB(skb)->data_offset;
1261 static inline void skb_gro_pull(struct sk_buff *skb, unsigned int len)
1263 NAPI_GRO_CB(skb)->data_offset += len;
1266 static inline void *skb_gro_header_fast(struct sk_buff *skb,
1267 unsigned int offset)
1269 return NAPI_GRO_CB(skb)->frag0 + offset;
1272 static inline int skb_gro_header_hard(struct sk_buff *skb, unsigned int hlen)
1274 return NAPI_GRO_CB(skb)->frag0_len < hlen;
1277 static inline void *skb_gro_header_slow(struct sk_buff *skb, unsigned int hlen,
1278 unsigned int offset)
1280 NAPI_GRO_CB(skb)->frag0 = NULL;
1281 NAPI_GRO_CB(skb)->frag0_len = 0;
1282 return pskb_may_pull(skb, hlen) ? skb->data + offset : NULL;
1285 static inline void *skb_gro_mac_header(struct sk_buff *skb)
1287 return NAPI_GRO_CB(skb)->frag0 ?: skb_mac_header(skb);
1290 static inline void *skb_gro_network_header(struct sk_buff *skb)
1292 return (NAPI_GRO_CB(skb)->frag0 ?: skb->data) +
1293 skb_network_offset(skb);
1296 static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
1297 unsigned short type,
1298 const void *daddr, const void *saddr,
1301 if (!dev->header_ops || !dev->header_ops->create)
1304 return dev->header_ops->create(skb, dev, type, daddr, saddr, len);
1307 static inline int dev_parse_header(const struct sk_buff *skb,
1308 unsigned char *haddr)
1310 const struct net_device *dev = skb->dev;
1312 if (!dev->header_ops || !dev->header_ops->parse)
1314 return dev->header_ops->parse(skb, haddr);
1317 typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
1318 extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf);
1319 static inline int unregister_gifconf(unsigned int family)
1321 return register_gifconf(family, NULL);
1325 * Incoming packets are placed on per-cpu queues so that
1326 * no locking is needed.
1328 struct softnet_data {
1329 struct Qdisc *output_queue;
1330 struct list_head poll_list;
1331 struct sk_buff *completion_queue;
1333 /* Elements below can be accessed between CPUs for RPS */
1335 struct call_single_data csd ____cacheline_aligned_in_smp;
1337 struct sk_buff_head input_pkt_queue;
1338 struct napi_struct backlog;
1341 DECLARE_PER_CPU_ALIGNED(struct softnet_data, softnet_data);
1343 #define HAVE_NETIF_QUEUE
1345 extern void __netif_schedule(struct Qdisc *q);
1347 static inline void netif_schedule_queue(struct netdev_queue *txq)
1349 if (!test_bit(__QUEUE_STATE_XOFF, &txq->state))
1350 __netif_schedule(txq->qdisc);
1353 static inline void netif_tx_schedule_all(struct net_device *dev)
1357 for (i = 0; i < dev->num_tx_queues; i++)
1358 netif_schedule_queue(netdev_get_tx_queue(dev, i));
1361 static inline void netif_tx_start_queue(struct netdev_queue *dev_queue)
1363 clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
1367 * netif_start_queue - allow transmit
1368 * @dev: network device
1370 * Allow upper layers to call the device hard_start_xmit routine.
1372 static inline void netif_start_queue(struct net_device *dev)
1374 netif_tx_start_queue(netdev_get_tx_queue(dev, 0));
1377 static inline void netif_tx_start_all_queues(struct net_device *dev)
1381 for (i = 0; i < dev->num_tx_queues; i++) {
1382 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1383 netif_tx_start_queue(txq);
1387 static inline void netif_tx_wake_queue(struct netdev_queue *dev_queue)
1389 #ifdef CONFIG_NETPOLL_TRAP
1390 if (netpoll_trap()) {
1391 netif_tx_start_queue(dev_queue);
1395 if (test_and_clear_bit(__QUEUE_STATE_XOFF, &dev_queue->state))
1396 __netif_schedule(dev_queue->qdisc);
1400 * netif_wake_queue - restart transmit
1401 * @dev: network device
1403 * Allow upper layers to call the device hard_start_xmit routine.
1404 * Used for flow control when transmit resources are available.
1406 static inline void netif_wake_queue(struct net_device *dev)
1408 netif_tx_wake_queue(netdev_get_tx_queue(dev, 0));
1411 static inline void netif_tx_wake_all_queues(struct net_device *dev)
1415 for (i = 0; i < dev->num_tx_queues; i++) {
1416 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1417 netif_tx_wake_queue(txq);
1421 static inline void netif_tx_stop_queue(struct netdev_queue *dev_queue)
1423 set_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
1427 * netif_stop_queue - stop transmitted packets
1428 * @dev: network device
1430 * Stop upper layers calling the device hard_start_xmit routine.
1431 * Used for flow control when transmit resources are unavailable.
1433 static inline void netif_stop_queue(struct net_device *dev)
1435 netif_tx_stop_queue(netdev_get_tx_queue(dev, 0));
1438 static inline void netif_tx_stop_all_queues(struct net_device *dev)
1442 for (i = 0; i < dev->num_tx_queues; i++) {
1443 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1444 netif_tx_stop_queue(txq);
1448 static inline int netif_tx_queue_stopped(const struct netdev_queue *dev_queue)
1450 return test_bit(__QUEUE_STATE_XOFF, &dev_queue->state);
1454 * netif_queue_stopped - test if transmit queue is flowblocked
1455 * @dev: network device
1457 * Test if transmit queue on device is currently unable to send.
1459 static inline int netif_queue_stopped(const struct net_device *dev)
1461 return netif_tx_queue_stopped(netdev_get_tx_queue(dev, 0));
1464 static inline int netif_tx_queue_frozen(const struct netdev_queue *dev_queue)
1466 return test_bit(__QUEUE_STATE_FROZEN, &dev_queue->state);
1470 * netif_running - test if up
1471 * @dev: network device
1473 * Test if the device has been brought up.
1475 static inline int netif_running(const struct net_device *dev)
1477 return test_bit(__LINK_STATE_START, &dev->state);
1481 * Routines to manage the subqueues on a device. We only need start
1482 * stop, and a check if it's stopped. All other device management is
1483 * done at the overall netdevice level.
1484 * Also test the device if we're multiqueue.
1488 * netif_start_subqueue - allow sending packets on subqueue
1489 * @dev: network device
1490 * @queue_index: sub queue index
1492 * Start individual transmit queue of a device with multiple transmit queues.
1494 static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
1496 struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
1498 netif_tx_start_queue(txq);
1502 * netif_stop_subqueue - stop sending packets on subqueue
1503 * @dev: network device
1504 * @queue_index: sub queue index
1506 * Stop individual transmit queue of a device with multiple transmit queues.
1508 static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
1510 struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
1511 #ifdef CONFIG_NETPOLL_TRAP
1515 netif_tx_stop_queue(txq);
1519 * netif_subqueue_stopped - test status of subqueue
1520 * @dev: network device
1521 * @queue_index: sub queue index
1523 * Check individual transmit queue of a device with multiple transmit queues.
1525 static inline int __netif_subqueue_stopped(const struct net_device *dev,
1528 struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
1530 return netif_tx_queue_stopped(txq);
1533 static inline int netif_subqueue_stopped(const struct net_device *dev,
1534 struct sk_buff *skb)
1536 return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb));
1540 * netif_wake_subqueue - allow sending packets on subqueue
1541 * @dev: network device
1542 * @queue_index: sub queue index
1544 * Resume individual transmit queue of a device with multiple transmit queues.
1546 static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
1548 struct netdev_queue *txq = netdev_get_tx_queue(dev, queue_index);
1549 #ifdef CONFIG_NETPOLL_TRAP
1553 if (test_and_clear_bit(__QUEUE_STATE_XOFF, &txq->state))
1554 __netif_schedule(txq->qdisc);
1558 * netif_is_multiqueue - test if device has multiple transmit queues
1559 * @dev: network device
1561 * Check if device has multiple transmit queues
1563 static inline int netif_is_multiqueue(const struct net_device *dev)
1565 return (dev->num_tx_queues > 1);
1568 /* Use this variant when it is known for sure that it
1569 * is executing from hardware interrupt context or with hardware interrupts
1572 extern void dev_kfree_skb_irq(struct sk_buff *skb);
1574 /* Use this variant in places where it could be invoked
1575 * from either hardware interrupt or other context, with hardware interrupts
1576 * either disabled or enabled.
1578 extern void dev_kfree_skb_any(struct sk_buff *skb);
1580 #define HAVE_NETIF_RX 1
1581 extern int netif_rx(struct sk_buff *skb);
1582 extern int netif_rx_ni(struct sk_buff *skb);
1583 #define HAVE_NETIF_RECEIVE_SKB 1
1584 extern int netif_receive_skb(struct sk_buff *skb);
1585 extern gro_result_t dev_gro_receive(struct napi_struct *napi,
1586 struct sk_buff *skb);
1587 extern gro_result_t napi_skb_finish(gro_result_t ret, struct sk_buff *skb);
1588 extern gro_result_t napi_gro_receive(struct napi_struct *napi,
1589 struct sk_buff *skb);
1590 extern void napi_reuse_skb(struct napi_struct *napi,
1591 struct sk_buff *skb);
1592 extern struct sk_buff * napi_get_frags(struct napi_struct *napi);
1593 extern gro_result_t napi_frags_finish(struct napi_struct *napi,
1594 struct sk_buff *skb,
1596 extern struct sk_buff * napi_frags_skb(struct napi_struct *napi);
1597 extern gro_result_t napi_gro_frags(struct napi_struct *napi);
1599 static inline void napi_free_frags(struct napi_struct *napi)
1601 kfree_skb(napi->skb);
1605 extern void netif_nit_deliver(struct sk_buff *skb);
1606 extern int dev_valid_name(const char *name);
1607 extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *);
1608 extern int dev_ethtool(struct net *net, struct ifreq *);
1609 extern unsigned dev_get_flags(const struct net_device *);
1610 extern int __dev_change_flags(struct net_device *, unsigned int flags);
1611 extern int dev_change_flags(struct net_device *, unsigned);
1612 extern void __dev_notify_flags(struct net_device *, unsigned int old_flags);
1613 extern int dev_change_name(struct net_device *, const char *);
1614 extern int dev_set_alias(struct net_device *, const char *, size_t);
1615 extern int dev_change_net_namespace(struct net_device *,
1616 struct net *, const char *);
1617 extern int dev_set_mtu(struct net_device *, int);
1618 extern int dev_set_mac_address(struct net_device *,
1620 extern int dev_hard_start_xmit(struct sk_buff *skb,
1621 struct net_device *dev,
1622 struct netdev_queue *txq);
1623 extern int dev_forward_skb(struct net_device *dev,
1624 struct sk_buff *skb);
1626 extern int netdev_budget;
1628 /* Called by rtnetlink.c:rtnl_unlock() */
1629 extern void netdev_run_todo(void);
1632 * dev_put - release reference to device
1633 * @dev: network device
1635 * Release reference to device to allow it to be freed.
1637 static inline void dev_put(struct net_device *dev)
1639 atomic_dec(&dev->refcnt);
1643 * dev_hold - get reference to device
1644 * @dev: network device
1646 * Hold reference to device to keep it from being freed.
1648 static inline void dev_hold(struct net_device *dev)
1650 atomic_inc(&dev->refcnt);
1653 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
1654 * and _off may be called from IRQ context, but it is caller
1655 * who is responsible for serialization of these calls.
1657 * The name carrier is inappropriate, these functions should really be
1658 * called netif_lowerlayer_*() because they represent the state of any
1659 * kind of lower layer not just hardware media.
1662 extern void linkwatch_fire_event(struct net_device *dev);
1663 extern void linkwatch_forget_dev(struct net_device *dev);
1666 * netif_carrier_ok - test if carrier present
1667 * @dev: network device
1669 * Check if carrier is present on device
1671 static inline int netif_carrier_ok(const struct net_device *dev)
1673 return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
1676 extern unsigned long dev_trans_start(struct net_device *dev);
1678 extern void __netdev_watchdog_up(struct net_device *dev);
1680 extern void netif_carrier_on(struct net_device *dev);
1682 extern void netif_carrier_off(struct net_device *dev);
1685 * netif_dormant_on - mark device as dormant.
1686 * @dev: network device
1688 * Mark device as dormant (as per RFC2863).
1690 * The dormant state indicates that the relevant interface is not
1691 * actually in a condition to pass packets (i.e., it is not 'up') but is
1692 * in a "pending" state, waiting for some external event. For "on-
1693 * demand" interfaces, this new state identifies the situation where the
1694 * interface is waiting for events to place it in the up state.
1697 static inline void netif_dormant_on(struct net_device *dev)
1699 if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state))
1700 linkwatch_fire_event(dev);
1704 * netif_dormant_off - set device as not dormant.
1705 * @dev: network device
1707 * Device is not in dormant state.
1709 static inline void netif_dormant_off(struct net_device *dev)
1711 if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state))
1712 linkwatch_fire_event(dev);
1716 * netif_dormant - test if carrier present
1717 * @dev: network device
1719 * Check if carrier is present on device
1721 static inline int netif_dormant(const struct net_device *dev)
1723 return test_bit(__LINK_STATE_DORMANT, &dev->state);
1728 * netif_oper_up - test if device is operational
1729 * @dev: network device
1731 * Check if carrier is operational
1733 static inline int netif_oper_up(const struct net_device *dev)
1735 return (dev->operstate == IF_OPER_UP ||
1736 dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
1740 * netif_device_present - is device available or removed
1741 * @dev: network device
1743 * Check if device has not been removed from system.
1745 static inline int netif_device_present(struct net_device *dev)
1747 return test_bit(__LINK_STATE_PRESENT, &dev->state);
1750 extern void netif_device_detach(struct net_device *dev);
1752 extern void netif_device_attach(struct net_device *dev);
1755 * Network interface message level settings
1757 #define HAVE_NETIF_MSG 1
1760 NETIF_MSG_DRV = 0x0001,
1761 NETIF_MSG_PROBE = 0x0002,
1762 NETIF_MSG_LINK = 0x0004,
1763 NETIF_MSG_TIMER = 0x0008,
1764 NETIF_MSG_IFDOWN = 0x0010,
1765 NETIF_MSG_IFUP = 0x0020,
1766 NETIF_MSG_RX_ERR = 0x0040,
1767 NETIF_MSG_TX_ERR = 0x0080,
1768 NETIF_MSG_TX_QUEUED = 0x0100,
1769 NETIF_MSG_INTR = 0x0200,
1770 NETIF_MSG_TX_DONE = 0x0400,
1771 NETIF_MSG_RX_STATUS = 0x0800,
1772 NETIF_MSG_PKTDATA = 0x1000,
1773 NETIF_MSG_HW = 0x2000,
1774 NETIF_MSG_WOL = 0x4000,
1777 #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
1778 #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
1779 #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
1780 #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
1781 #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
1782 #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
1783 #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
1784 #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
1785 #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
1786 #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
1787 #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
1788 #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
1789 #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
1790 #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
1791 #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
1793 static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
1796 if (debug_value < 0 || debug_value >= (sizeof(u32) * 8))
1797 return default_msg_enable_bits;
1798 if (debug_value == 0) /* no output */
1800 /* set low N bits */
1801 return (1 << debug_value) - 1;
1804 static inline void __netif_tx_lock(struct netdev_queue *txq, int cpu)
1806 spin_lock(&txq->_xmit_lock);
1807 txq->xmit_lock_owner = cpu;
1810 static inline void __netif_tx_lock_bh(struct netdev_queue *txq)
1812 spin_lock_bh(&txq->_xmit_lock);
1813 txq->xmit_lock_owner = smp_processor_id();
1816 static inline int __netif_tx_trylock(struct netdev_queue *txq)
1818 int ok = spin_trylock(&txq->_xmit_lock);
1820 txq->xmit_lock_owner = smp_processor_id();
1824 static inline void __netif_tx_unlock(struct netdev_queue *txq)
1826 txq->xmit_lock_owner = -1;
1827 spin_unlock(&txq->_xmit_lock);
1830 static inline void __netif_tx_unlock_bh(struct netdev_queue *txq)
1832 txq->xmit_lock_owner = -1;
1833 spin_unlock_bh(&txq->_xmit_lock);
1836 static inline void txq_trans_update(struct netdev_queue *txq)
1838 if (txq->xmit_lock_owner != -1)
1839 txq->trans_start = jiffies;
1843 * netif_tx_lock - grab network device transmit lock
1844 * @dev: network device
1846 * Get network device transmit lock
1848 static inline void netif_tx_lock(struct net_device *dev)
1853 spin_lock(&dev->tx_global_lock);
1854 cpu = smp_processor_id();
1855 for (i = 0; i < dev->num_tx_queues; i++) {
1856 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1858 /* We are the only thread of execution doing a
1859 * freeze, but we have to grab the _xmit_lock in
1860 * order to synchronize with threads which are in
1861 * the ->hard_start_xmit() handler and already
1862 * checked the frozen bit.
1864 __netif_tx_lock(txq, cpu);
1865 set_bit(__QUEUE_STATE_FROZEN, &txq->state);
1866 __netif_tx_unlock(txq);
1870 static inline void netif_tx_lock_bh(struct net_device *dev)
1876 static inline void netif_tx_unlock(struct net_device *dev)
1880 for (i = 0; i < dev->num_tx_queues; i++) {
1881 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1883 /* No need to grab the _xmit_lock here. If the
1884 * queue is not stopped for another reason, we
1887 clear_bit(__QUEUE_STATE_FROZEN, &txq->state);
1888 netif_schedule_queue(txq);
1890 spin_unlock(&dev->tx_global_lock);
1893 static inline void netif_tx_unlock_bh(struct net_device *dev)
1895 netif_tx_unlock(dev);
1899 #define HARD_TX_LOCK(dev, txq, cpu) { \
1900 if ((dev->features & NETIF_F_LLTX) == 0) { \
1901 __netif_tx_lock(txq, cpu); \
1905 #define HARD_TX_UNLOCK(dev, txq) { \
1906 if ((dev->features & NETIF_F_LLTX) == 0) { \
1907 __netif_tx_unlock(txq); \
1911 static inline void netif_tx_disable(struct net_device *dev)
1917 cpu = smp_processor_id();
1918 for (i = 0; i < dev->num_tx_queues; i++) {
1919 struct netdev_queue *txq = netdev_get_tx_queue(dev, i);
1921 __netif_tx_lock(txq, cpu);
1922 netif_tx_stop_queue(txq);
1923 __netif_tx_unlock(txq);
1928 static inline void netif_addr_lock(struct net_device *dev)
1930 spin_lock(&dev->addr_list_lock);
1933 static inline void netif_addr_lock_bh(struct net_device *dev)
1935 spin_lock_bh(&dev->addr_list_lock);
1938 static inline void netif_addr_unlock(struct net_device *dev)
1940 spin_unlock(&dev->addr_list_lock);
1943 static inline void netif_addr_unlock_bh(struct net_device *dev)
1945 spin_unlock_bh(&dev->addr_list_lock);
1949 * dev_addrs walker. Should be used only for read access. Call with
1950 * rcu_read_lock held.
1952 #define for_each_dev_addr(dev, ha) \
1953 list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list)
1955 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
1957 extern void ether_setup(struct net_device *dev);
1959 /* Support for loadable net-drivers */
1960 extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
1961 void (*setup)(struct net_device *),
1962 unsigned int queue_count);
1963 #define alloc_netdev(sizeof_priv, name, setup) \
1964 alloc_netdev_mq(sizeof_priv, name, setup, 1)
1965 extern int register_netdev(struct net_device *dev);
1966 extern void unregister_netdev(struct net_device *dev);
1968 /* General hardware address lists handling functions */
1969 extern int __hw_addr_add_multiple(struct netdev_hw_addr_list *to_list,
1970 struct netdev_hw_addr_list *from_list,
1971 int addr_len, unsigned char addr_type);
1972 extern void __hw_addr_del_multiple(struct netdev_hw_addr_list *to_list,
1973 struct netdev_hw_addr_list *from_list,
1974 int addr_len, unsigned char addr_type);
1975 extern int __hw_addr_sync(struct netdev_hw_addr_list *to_list,
1976 struct netdev_hw_addr_list *from_list,
1978 extern void __hw_addr_unsync(struct netdev_hw_addr_list *to_list,
1979 struct netdev_hw_addr_list *from_list,
1981 extern void __hw_addr_flush(struct netdev_hw_addr_list *list);
1982 extern void __hw_addr_init(struct netdev_hw_addr_list *list);
1984 /* Functions used for device addresses handling */
1985 extern int dev_addr_add(struct net_device *dev, unsigned char *addr,
1986 unsigned char addr_type);
1987 extern int dev_addr_del(struct net_device *dev, unsigned char *addr,
1988 unsigned char addr_type);
1989 extern int dev_addr_add_multiple(struct net_device *to_dev,
1990 struct net_device *from_dev,
1991 unsigned char addr_type);
1992 extern int dev_addr_del_multiple(struct net_device *to_dev,
1993 struct net_device *from_dev,
1994 unsigned char addr_type);
1995 extern void dev_addr_flush(struct net_device *dev);
1996 extern int dev_addr_init(struct net_device *dev);
1998 /* Functions used for unicast addresses handling */
1999 extern int dev_uc_add(struct net_device *dev, unsigned char *addr);
2000 extern int dev_uc_del(struct net_device *dev, unsigned char *addr);
2001 extern int dev_uc_sync(struct net_device *to, struct net_device *from);
2002 extern void dev_uc_unsync(struct net_device *to, struct net_device *from);
2003 extern void dev_uc_flush(struct net_device *dev);
2004 extern void dev_uc_init(struct net_device *dev);
2006 /* Functions used for multicast addresses handling */
2007 extern int dev_mc_add(struct net_device *dev, unsigned char *addr);
2008 extern int dev_mc_add_global(struct net_device *dev, unsigned char *addr);
2009 extern int dev_mc_del(struct net_device *dev, unsigned char *addr);
2010 extern int dev_mc_del_global(struct net_device *dev, unsigned char *addr);
2011 extern int dev_mc_sync(struct net_device *to, struct net_device *from);
2012 extern void dev_mc_unsync(struct net_device *to, struct net_device *from);
2013 extern void dev_mc_flush(struct net_device *dev);
2014 extern void dev_mc_init(struct net_device *dev);
2016 /* Functions used for secondary unicast and multicast support */
2017 extern void dev_set_rx_mode(struct net_device *dev);
2018 extern void __dev_set_rx_mode(struct net_device *dev);
2019 extern int dev_set_promiscuity(struct net_device *dev, int inc);
2020 extern int dev_set_allmulti(struct net_device *dev, int inc);
2021 extern void netdev_state_change(struct net_device *dev);
2022 extern int netdev_bonding_change(struct net_device *dev,
2023 unsigned long event);
2024 extern void netdev_features_change(struct net_device *dev);
2025 /* Load a device via the kmod */
2026 extern void dev_load(struct net *net, const char *name);
2027 extern void dev_mcast_init(void);
2028 extern const struct net_device_stats *dev_get_stats(struct net_device *dev);
2029 extern void dev_txq_stats_fold(const struct net_device *dev, struct net_device_stats *stats);
2031 extern int netdev_max_backlog;
2032 extern int weight_p;
2033 extern int netdev_set_master(struct net_device *dev, struct net_device *master);
2034 extern int skb_checksum_help(struct sk_buff *skb);
2035 extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
2037 extern void netdev_rx_csum_fault(struct net_device *dev);
2039 static inline void netdev_rx_csum_fault(struct net_device *dev)
2043 /* rx skb timestamps */
2044 extern void net_enable_timestamp(void);
2045 extern void net_disable_timestamp(void);
2047 #ifdef CONFIG_PROC_FS
2048 extern void *dev_seq_start(struct seq_file *seq, loff_t *pos);
2049 extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
2050 extern void dev_seq_stop(struct seq_file *seq, void *v);
2053 extern int netdev_class_create_file(struct class_attribute *class_attr);
2054 extern void netdev_class_remove_file(struct class_attribute *class_attr);
2056 extern char *netdev_drivername(const struct net_device *dev, char *buffer, int len);
2058 extern void linkwatch_run_queue(void);
2060 unsigned long netdev_increment_features(unsigned long all, unsigned long one,
2061 unsigned long mask);
2062 unsigned long netdev_fix_features(unsigned long features, const char *name);
2064 void netif_stacked_transfer_operstate(const struct net_device *rootdev,
2065 struct net_device *dev);
2067 static inline int net_gso_ok(int features, int gso_type)
2069 int feature = gso_type << NETIF_F_GSO_SHIFT;
2070 return (features & feature) == feature;
2073 static inline int skb_gso_ok(struct sk_buff *skb, int features)
2075 return net_gso_ok(features, skb_shinfo(skb)->gso_type) &&
2076 (!skb_has_frags(skb) || (features & NETIF_F_FRAGLIST));
2079 static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
2081 return skb_is_gso(skb) &&
2082 (!skb_gso_ok(skb, dev->features) ||
2083 unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
2086 static inline void netif_set_gso_max_size(struct net_device *dev,
2089 dev->gso_max_size = size;
2092 extern int __skb_bond_should_drop(struct sk_buff *skb,
2093 struct net_device *master);
2095 static inline int skb_bond_should_drop(struct sk_buff *skb,
2096 struct net_device *master)
2099 return __skb_bond_should_drop(skb, master);
2103 extern struct pernet_operations __net_initdata loopback_net_ops;
2105 static inline int dev_ethtool_get_settings(struct net_device *dev,
2106 struct ethtool_cmd *cmd)
2108 if (!dev->ethtool_ops || !dev->ethtool_ops->get_settings)
2110 return dev->ethtool_ops->get_settings(dev, cmd);
2113 static inline u32 dev_ethtool_get_rx_csum(struct net_device *dev)
2115 if (!dev->ethtool_ops || !dev->ethtool_ops->get_rx_csum)
2117 return dev->ethtool_ops->get_rx_csum(dev);
2120 static inline u32 dev_ethtool_get_flags(struct net_device *dev)
2122 if (!dev->ethtool_ops || !dev->ethtool_ops->get_flags)
2124 return dev->ethtool_ops->get_flags(dev);
2127 /* Logging, debugging and troubleshooting/diagnostic helpers. */
2129 /* netdev_printk helpers, similar to dev_printk */
2131 static inline const char *netdev_name(const struct net_device *dev)
2133 if (dev->reg_state != NETREG_REGISTERED)
2134 return "(unregistered net_device)";
2138 #define netdev_printk(level, netdev, format, args...) \
2139 dev_printk(level, (netdev)->dev.parent, \
2141 netdev_name(netdev), ##args)
2143 #define netdev_emerg(dev, format, args...) \
2144 netdev_printk(KERN_EMERG, dev, format, ##args)
2145 #define netdev_alert(dev, format, args...) \
2146 netdev_printk(KERN_ALERT, dev, format, ##args)
2147 #define netdev_crit(dev, format, args...) \
2148 netdev_printk(KERN_CRIT, dev, format, ##args)
2149 #define netdev_err(dev, format, args...) \
2150 netdev_printk(KERN_ERR, dev, format, ##args)
2151 #define netdev_warn(dev, format, args...) \
2152 netdev_printk(KERN_WARNING, dev, format, ##args)
2153 #define netdev_notice(dev, format, args...) \
2154 netdev_printk(KERN_NOTICE, dev, format, ##args)
2155 #define netdev_info(dev, format, args...) \
2156 netdev_printk(KERN_INFO, dev, format, ##args)
2159 #define netdev_dbg(__dev, format, args...) \
2160 netdev_printk(KERN_DEBUG, __dev, format, ##args)
2161 #elif defined(CONFIG_DYNAMIC_DEBUG)
2162 #define netdev_dbg(__dev, format, args...) \
2164 dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \
2165 netdev_name(__dev), ##args); \
2168 #define netdev_dbg(__dev, format, args...) \
2171 netdev_printk(KERN_DEBUG, __dev, format, ##args); \
2176 #if defined(VERBOSE_DEBUG)
2177 #define netdev_vdbg netdev_dbg
2180 #define netdev_vdbg(dev, format, args...) \
2183 netdev_printk(KERN_DEBUG, dev, format, ##args); \
2189 * netdev_WARN() acts like dev_printk(), but with the key difference
2190 * of using a WARN/WARN_ON to get the message out, including the
2191 * file/line information and a backtrace.
2193 #define netdev_WARN(dev, format, args...) \
2194 WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args);
2196 /* netif printk helpers, similar to netdev_printk */
2198 #define netif_printk(priv, type, level, dev, fmt, args...) \
2200 if (netif_msg_##type(priv)) \
2201 netdev_printk(level, (dev), fmt, ##args); \
2204 #define netif_emerg(priv, type, dev, fmt, args...) \
2205 netif_printk(priv, type, KERN_EMERG, dev, fmt, ##args)
2206 #define netif_alert(priv, type, dev, fmt, args...) \
2207 netif_printk(priv, type, KERN_ALERT, dev, fmt, ##args)
2208 #define netif_crit(priv, type, dev, fmt, args...) \
2209 netif_printk(priv, type, KERN_CRIT, dev, fmt, ##args)
2210 #define netif_err(priv, type, dev, fmt, args...) \
2211 netif_printk(priv, type, KERN_ERR, dev, fmt, ##args)
2212 #define netif_warn(priv, type, dev, fmt, args...) \
2213 netif_printk(priv, type, KERN_WARNING, dev, fmt, ##args)
2214 #define netif_notice(priv, type, dev, fmt, args...) \
2215 netif_printk(priv, type, KERN_NOTICE, dev, fmt, ##args)
2216 #define netif_info(priv, type, dev, fmt, args...) \
2217 netif_printk(priv, type, KERN_INFO, (dev), fmt, ##args)
2220 #define netif_dbg(priv, type, dev, format, args...) \
2221 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args)
2222 #elif defined(CONFIG_DYNAMIC_DEBUG)
2223 #define netif_dbg(priv, type, netdev, format, args...) \
2225 if (netif_msg_##type(priv)) \
2226 dynamic_dev_dbg((netdev)->dev.parent, \
2228 netdev_name(netdev), ##args); \
2231 #define netif_dbg(priv, type, dev, format, args...) \
2234 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
2239 #if defined(VERBOSE_DEBUG)
2240 #define netif_vdbg netdev_dbg
2242 #define netif_vdbg(priv, type, dev, format, args...) \
2245 netif_printk(KERN_DEBUG, dev, format, ##args); \
2250 #endif /* __KERNEL__ */
2252 #endif /* _LINUX_NETDEVICE_H */