1 /* Modified by Broadcom Corp. Portions Copyright (c) Broadcom Corp, 2012. */
3 * INET An implementation of the TCP/IP protocol suite for the LINUX
4 * operating system. INET is implemented using the BSD Socket
5 * interface as the means of communication with the user level.
7 * Definitions for the Interfaces handler.
9 * Version: @(#)dev.h 1.0.10 08/12/93
12 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
13 * Corey Minyard <wf-rch!minyard@relay.EU.net>
14 * Donald J. Becker, <becker@cesdis.gsfc.nasa.gov>
15 * Alan Cox, <alan@lxorguk.ukuu.org.uk>
16 * Bjorn Ekwall. <bj0rn@blox.se>
17 * Pekka Riikonen <priikone@poseidon.pspt.fi>
19 * This program is free software; you can redistribute it and/or
20 * modify it under the terms of the GNU General Public License
21 * as published by the Free Software Foundation; either version
22 * 2 of the License, or (at your option) any later version.
24 * Moved to /usr/include/linux for NET3
26 #ifndef _LINUX_NETDEVICE_H
27 #define _LINUX_NETDEVICE_H
30 #include <linux/if_ether.h>
31 #include <linux/if_packet.h>
32 #include <linux/if_link.h>
35 #include <linux/pm_qos_params.h>
36 #include <linux/timer.h>
37 #include <linux/delay.h>
39 #include <asm/atomic.h>
40 #include <asm/cache.h>
41 #include <asm/byteorder.h>
43 #include <linux/device.h>
44 #include <linux/percpu.h>
45 #include <linux/rculist.h>
46 #include <linux/dmaengine.h>
47 #include <linux/workqueue.h>
49 #include <linux/ethtool.h>
50 #include <net/net_namespace.h>
53 #include <net/dcbnl.h>
61 /* source back-compat hooks */
62 #define SET_ETHTOOL_OPS(netdev,ops) \
63 ( (netdev)->ethtool_ops = (ops) )
65 #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev
66 functions are available. */
67 #define HAVE_FREE_NETDEV /* free_netdev() */
68 #define HAVE_NETDEV_PRIV /* netdev_priv() */
70 /* hardware address assignment types */
71 #define NET_ADDR_PERM 0 /* address is permanent (default) */
72 #define NET_ADDR_RANDOM 1 /* address is generated randomly */
73 #define NET_ADDR_STOLEN 2 /* address is stolen from other device */
75 /* Backlog congestion levels */
76 #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
77 #define NET_RX_DROP 1 /* packet dropped */
80 * Transmit return codes: transmit return codes originate from three different
83 * - qdisc return codes
84 * - driver transmit return codes
87 * Drivers are allowed to return any one of those in their hard_start_xmit()
88 * function. Real network devices commonly used with qdiscs should only return
89 * the driver transmit return codes though - when qdiscs are used, the actual
90 * transmission happens asynchronously, so the value is not propagated to
91 * higher layers. Virtual network devices transmit synchronously, in this case
92 * the driver transmit return codes are consumed by dev_queue_xmit(), all
93 * others are propagated to higher layers.
96 /* qdisc ->enqueue() return codes. */
97 #define NET_XMIT_SUCCESS 0x00
98 #define NET_XMIT_DROP 0x01 /* skb dropped */
99 #define NET_XMIT_CN 0x02 /* congestion notification */
100 #define NET_XMIT_POLICED 0x03 /* skb is shot by police */
101 #define NET_XMIT_MASK 0x0f /* qdisc flags in net/sch_generic.h */
103 /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
104 * indicates that the device will soon be dropping packets, or already drops
105 * some packets of the same priority; prompting us to send less aggressively. */
106 #define net_xmit_eval(e) ((e) == NET_XMIT_CN ? 0 : (e))
107 #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
109 /* Driver transmit return codes */
110 #define NETDEV_TX_MASK 0xf0
113 __NETDEV_TX_MIN
= INT_MIN
, /* make sure enum is signed */
114 NETDEV_TX_OK
= 0x00, /* driver took care of packet */
115 NETDEV_TX_BUSY
= 0x10, /* driver tx path was busy*/
116 NETDEV_TX_LOCKED
= 0x20, /* driver tx lock was already taken */
118 typedef enum netdev_tx netdev_tx_t
;
121 * Current order: NETDEV_TX_MASK > NET_XMIT_MASK >= 0 is significant;
122 * hard_start_xmit() return < NET_XMIT_MASK means skb was consumed.
124 static inline bool dev_xmit_complete(int rc
)
127 * Positive cases with an skb consumed by a driver:
128 * - successful transmission (rc == NETDEV_TX_OK)
129 * - error while transmitting (rc < 0)
130 * - error while queueing to a different device (rc & NET_XMIT_MASK)
132 if (likely(rc
< NET_XMIT_MASK
))
140 #define MAX_ADDR_LEN 32 /* Largest hardware address length */
144 * Compute the worst case header length according to the protocols
148 #if defined(CONFIG_WLAN) || defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
149 # if defined(CONFIG_MAC80211_MESH)
150 # define LL_MAX_HEADER 128
152 # define LL_MAX_HEADER 96
154 #elif defined(CONFIG_TR) || defined(CONFIG_TR_MODULE)
155 # define LL_MAX_HEADER 48
157 # define LL_MAX_HEADER 32
160 #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
161 !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \
162 !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
163 !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
164 #define MAX_HEADER LL_MAX_HEADER
166 #define MAX_HEADER (LL_MAX_HEADER + 48)
170 * Old network device statistics. Fields are native words
171 * (unsigned long) so they can be read and written atomically.
174 struct net_device_stats
{
175 unsigned long rx_packets
;
176 unsigned long tx_packets
;
177 unsigned long rx_bytes
;
178 unsigned long tx_bytes
;
179 unsigned long rx_errors
;
180 unsigned long tx_errors
;
181 unsigned long rx_dropped
;
182 unsigned long tx_dropped
;
183 unsigned long multicast
;
184 unsigned long collisions
;
185 unsigned long rx_length_errors
;
186 unsigned long rx_over_errors
;
187 unsigned long rx_crc_errors
;
188 unsigned long rx_frame_errors
;
189 unsigned long rx_fifo_errors
;
190 unsigned long rx_missed_errors
;
191 unsigned long tx_aborted_errors
;
192 unsigned long tx_carrier_errors
;
193 unsigned long tx_fifo_errors
;
194 unsigned long tx_heartbeat_errors
;
195 unsigned long tx_window_errors
;
196 unsigned long rx_compressed
;
197 unsigned long tx_compressed
;
200 #endif /* __KERNEL__ */
203 /* Media selection options. */
216 #include <linux/cache.h>
217 #include <linux/skbuff.h>
223 struct netdev_hw_addr
{
224 struct list_head list
;
225 unsigned char addr
[MAX_ADDR_LEN
];
227 #define NETDEV_HW_ADDR_T_LAN 1
228 #define NETDEV_HW_ADDR_T_SAN 2
229 #define NETDEV_HW_ADDR_T_SLAVE 3
230 #define NETDEV_HW_ADDR_T_UNICAST 4
231 #define NETDEV_HW_ADDR_T_MULTICAST 5
235 struct rcu_head rcu_head
;
238 struct netdev_hw_addr_list
{
239 struct list_head list
;
243 #define netdev_hw_addr_list_count(l) ((l)->count)
244 #define netdev_hw_addr_list_empty(l) (netdev_hw_addr_list_count(l) == 0)
245 #define netdev_hw_addr_list_for_each(ha, l) \
246 list_for_each_entry(ha, &(l)->list, list)
248 #define netdev_uc_count(dev) netdev_hw_addr_list_count(&(dev)->uc)
249 #define netdev_uc_empty(dev) netdev_hw_addr_list_empty(&(dev)->uc)
250 #define netdev_for_each_uc_addr(ha, dev) \
251 netdev_hw_addr_list_for_each(ha, &(dev)->uc)
253 #define netdev_mc_count(dev) netdev_hw_addr_list_count(&(dev)->mc)
254 #define netdev_mc_empty(dev) netdev_hw_addr_list_empty(&(dev)->mc)
255 #define netdev_for_each_mc_addr(ha, dev) \
256 netdev_hw_addr_list_for_each(ha, &(dev)->mc)
259 struct hh_cache
*hh_next
; /* Next entry */
260 atomic_t hh_refcnt
; /* number of users */
262 * We want hh_output, hh_len, hh_lock and hh_data be a in a separate
264 * They are mostly read, but hh_refcnt may be changed quite frequently,
265 * incurring cache line ping pongs.
267 __be16 hh_type ____cacheline_aligned_in_smp
;
268 /* protocol identifier, f.e ETH_P_IP
269 * NOTE: For VLANs, this will be the
270 * encapuslated type. --BLG
272 u16 hh_len
; /* length of header */
273 int (*hh_output
)(struct sk_buff
*skb
);
276 /* cached hardware header; allow for machine alignment needs. */
277 #define HH_DATA_MOD 16
278 #define HH_DATA_OFF(__len) \
279 (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
280 #define HH_DATA_ALIGN(__len) \
281 (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
282 unsigned long hh_data
[HH_DATA_ALIGN(LL_MAX_HEADER
) / sizeof(long)];
285 /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
287 * dev->hard_header_len ? (dev->hard_header_len +
288 * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
290 * We could use other alignment values, but we must maintain the
291 * relationship HH alignment <= LL alignment.
293 * LL_ALLOCATED_SPACE also takes into account the tailroom the device
296 #define LL_RESERVED_SPACE(dev) \
297 ((((dev)->hard_header_len+(dev)->needed_headroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
298 #define LL_RESERVED_SPACE_EXTRA(dev,extra) \
299 ((((dev)->hard_header_len+(dev)->needed_headroom+(extra))&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
300 #define LL_ALLOCATED_SPACE(dev) \
301 ((((dev)->hard_header_len+(dev)->needed_headroom+(dev)->needed_tailroom)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
304 int (*create
) (struct sk_buff
*skb
, struct net_device
*dev
,
305 unsigned short type
, const void *daddr
,
306 const void *saddr
, unsigned len
);
307 int (*parse
)(const struct sk_buff
*skb
, unsigned char *haddr
);
308 int (*rebuild
)(struct sk_buff
*skb
);
309 #define HAVE_HEADER_CACHE
310 int (*cache
)(const struct neighbour
*neigh
, struct hh_cache
*hh
);
311 void (*cache_update
)(struct hh_cache
*hh
,
312 const struct net_device
*dev
,
313 const unsigned char *haddr
);
316 /* These flag bits are private to the generic network queueing
317 * layer, they may not be explicitly referenced by any other
321 enum netdev_state_t
{
323 __LINK_STATE_PRESENT
,
324 __LINK_STATE_NOCARRIER
,
325 __LINK_STATE_LINKWATCH_PENDING
,
326 __LINK_STATE_DORMANT
,
331 * This structure holds at boot time configured netdevice settings. They
332 * are then used in the device probing.
334 struct netdev_boot_setup
{
338 #define NETDEV_BOOT_SETUP_MAX 8
340 extern int __init
netdev_boot_setup(char *str
);
343 * Structure for NAPI scheduling similar to tasklet but with weighting
346 /* The poll_list must only be managed by the entity which
347 * changes the state of the NAPI_STATE_SCHED bit. This means
348 * whoever atomically sets that bit can add this napi_struct
349 * to the per-cpu poll_list, and whoever clears that bit
350 * can remove from the list right before clearing the bit.
352 struct list_head poll_list
;
356 int (*poll
)(struct napi_struct
*, int);
357 #ifdef CONFIG_NETPOLL
358 spinlock_t poll_lock
;
362 unsigned int gro_count
;
364 struct net_device
*dev
;
365 struct list_head dev_list
;
366 struct sk_buff
*gro_list
;
371 NAPI_STATE_SCHED
, /* Poll is scheduled */
372 NAPI_STATE_DISABLE
, /* Disable pending */
373 NAPI_STATE_NPSVC
, /* Netpoll - don't dequeue from poll_list */
383 typedef enum gro_result gro_result_t
;
385 typedef struct sk_buff
*rx_handler_func_t(struct sk_buff
*skb
);
387 extern void __napi_schedule(struct napi_struct
*n
);
389 static inline int napi_disable_pending(struct napi_struct
*n
)
391 return test_bit(NAPI_STATE_DISABLE
, &n
->state
);
395 * napi_schedule_prep - check if napi can be scheduled
398 * Test if NAPI routine is already running, and if not mark
399 * it as running. This is used as a condition variable
400 * insure only one NAPI poll instance runs. We also make
401 * sure there is no pending NAPI disable.
403 static inline int napi_schedule_prep(struct napi_struct
*n
)
405 return !napi_disable_pending(n
) &&
406 !test_and_set_bit(NAPI_STATE_SCHED
, &n
->state
);
410 * napi_schedule - schedule NAPI poll
413 * Schedule NAPI poll routine to be called if it is not already
416 static inline void napi_schedule(struct napi_struct
*n
)
418 if (napi_schedule_prep(n
))
422 /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */
423 static inline int napi_reschedule(struct napi_struct
*napi
)
425 if (napi_schedule_prep(napi
)) {
426 __napi_schedule(napi
);
433 * napi_complete - NAPI processing complete
436 * Mark NAPI processing as complete.
438 extern void __napi_complete(struct napi_struct
*n
);
439 extern void napi_complete(struct napi_struct
*n
);
442 * napi_disable - prevent NAPI from scheduling
445 * Stop NAPI from being scheduled on this context.
446 * Waits till any outstanding processing completes.
448 static inline void napi_disable(struct napi_struct
*n
)
450 set_bit(NAPI_STATE_DISABLE
, &n
->state
);
451 while (test_and_set_bit(NAPI_STATE_SCHED
, &n
->state
))
453 clear_bit(NAPI_STATE_DISABLE
, &n
->state
);
457 * napi_enable - enable NAPI scheduling
460 * Resume NAPI from being scheduled on this context.
461 * Must be paired with napi_disable.
463 static inline void napi_enable(struct napi_struct
*n
)
465 BUG_ON(!test_bit(NAPI_STATE_SCHED
, &n
->state
));
466 smp_mb__before_clear_bit();
467 clear_bit(NAPI_STATE_SCHED
, &n
->state
);
472 * napi_synchronize - wait until NAPI is not running
475 * Wait until NAPI is done being scheduled on this context.
476 * Waits till any outstanding processing completes but
477 * does not disable future activations.
479 static inline void napi_synchronize(const struct napi_struct
*n
)
481 while (test_bit(NAPI_STATE_SCHED
, &n
->state
))
485 # define napi_synchronize(n) barrier()
488 enum netdev_queue_state_t
{
490 __QUEUE_STATE_FROZEN
,
493 struct netdev_queue
{
497 struct net_device
*dev
;
500 struct Qdisc
*qdisc_sleeping
;
504 spinlock_t _xmit_lock ____cacheline_aligned_in_smp
;
507 * please use this field instead of dev->trans_start
509 unsigned long trans_start
;
513 } ____cacheline_aligned_in_smp
;
517 * This structure holds an RPS map which can be of variable length. The
518 * map is an array of CPUs.
525 #define RPS_MAP_SIZE(_num) (sizeof(struct rps_map) + (_num * sizeof(u16)))
528 * The rps_dev_flow structure contains the mapping of a flow to a CPU and the
529 * tail pointer for that CPU's input queue at the time of last enqueue.
531 struct rps_dev_flow
{
534 unsigned int last_qtail
;
538 * The rps_dev_flow_table structure contains a table of flow mappings.
540 struct rps_dev_flow_table
{
543 struct work_struct free_work
;
544 struct rps_dev_flow flows
[0];
546 #define RPS_DEV_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_dev_flow_table) + \
547 (_num * sizeof(struct rps_dev_flow)))
550 * The rps_sock_flow_table contains mappings of flows to the last CPU
551 * on which they were processed by the application (set in recvmsg).
553 struct rps_sock_flow_table
{
557 #define RPS_SOCK_FLOW_TABLE_SIZE(_num) (sizeof(struct rps_sock_flow_table) + \
558 (_num * sizeof(u16)))
560 #define RPS_NO_CPU 0xffff
562 static inline void rps_record_sock_flow(struct rps_sock_flow_table
*table
,
566 unsigned int cpu
, index
= hash
& table
->mask
;
568 /* We only give a hint, preemption can change cpu under us */
569 cpu
= raw_smp_processor_id();
571 if (table
->ents
[index
] != cpu
)
572 table
->ents
[index
] = cpu
;
576 static inline void rps_reset_sock_flow(struct rps_sock_flow_table
*table
,
580 table
->ents
[hash
& table
->mask
] = RPS_NO_CPU
;
583 extern struct rps_sock_flow_table
*rps_sock_flow_table
;
585 /* This structure contains an instance of an RX queue. */
586 struct netdev_rx_queue
{
587 struct rps_map
*rps_map
;
588 struct rps_dev_flow_table
*rps_flow_table
;
590 struct netdev_rx_queue
*first
;
592 } ____cacheline_aligned_in_smp
;
593 #endif /* CONFIG_RPS */
596 * This structure defines the management hooks for network devices.
597 * The following hooks can be defined; unless noted otherwise, they are
598 * optional and can be filled with a null pointer.
600 * int (*ndo_init)(struct net_device *dev);
601 * This function is called once when network device is registered.
602 * The network device can use this to any late stage initializaton
603 * or semantic validattion. It can fail with an error code which will
604 * be propogated back to register_netdev
606 * void (*ndo_uninit)(struct net_device *dev);
607 * This function is called when device is unregistered or when registration
608 * fails. It is not called if init fails.
610 * int (*ndo_open)(struct net_device *dev);
611 * This function is called when network device transistions to the up
614 * int (*ndo_stop)(struct net_device *dev);
615 * This function is called when network device transistions to the down
618 * netdev_tx_t (*ndo_start_xmit)(struct sk_buff *skb,
619 * struct net_device *dev);
620 * Called when a packet needs to be transmitted.
621 * Must return NETDEV_TX_OK , NETDEV_TX_BUSY.
622 * (can also return NETDEV_TX_LOCKED iff NETIF_F_LLTX)
623 * Required can not be NULL.
625 * u16 (*ndo_select_queue)(struct net_device *dev, struct sk_buff *skb);
626 * Called to decide which queue to when device supports multiple
629 * void (*ndo_change_rx_flags)(struct net_device *dev, int flags);
630 * This function is called to allow device receiver to make
631 * changes to configuration when multicast or promiscious is enabled.
633 * void (*ndo_set_rx_mode)(struct net_device *dev);
634 * This function is called device changes address list filtering.
636 * void (*ndo_set_multicast_list)(struct net_device *dev);
637 * This function is called when the multicast address list changes.
639 * int (*ndo_set_mac_address)(struct net_device *dev, void *addr);
640 * This function is called when the Media Access Control address
641 * needs to be changed. If this interface is not defined, the
642 * mac address can not be changed.
644 * int (*ndo_validate_addr)(struct net_device *dev);
645 * Test if Media Access Control address is valid for the device.
647 * int (*ndo_do_ioctl)(struct net_device *dev, struct ifreq *ifr, int cmd);
648 * Called when a user request an ioctl which can't be handled by
649 * the generic interface code. If not defined ioctl's return
650 * not supported error code.
652 * int (*ndo_set_config)(struct net_device *dev, struct ifmap *map);
653 * Used to set network devices bus interface parameters. This interface
654 * is retained for legacy reason, new devices should use the bus
655 * interface (PCI) for low level management.
657 * int (*ndo_change_mtu)(struct net_device *dev, int new_mtu);
658 * Called when a user wants to change the Maximum Transfer Unit
659 * of a device. If not defined, any request to change MTU will
660 * will return an error.
662 * void (*ndo_tx_timeout)(struct net_device *dev);
663 * Callback uses when the transmitter has not made any progress
664 * for dev->watchdog ticks.
666 * struct rtnl_link_stats64* (*ndo_get_stats64)(struct net_device *dev,
667 * struct rtnl_link_stats64 *storage);
668 * struct net_device_stats* (*ndo_get_stats)(struct net_device *dev);
669 * Called when a user wants to get the network device usage
670 * statistics. Drivers must do one of the following:
671 * 1. Define @ndo_get_stats64 to fill in a zero-initialised
672 * rtnl_link_stats64 structure passed by the caller.
673 * 2. Define @ndo_get_stats to update a net_device_stats structure
674 * (which should normally be dev->stats) and return a pointer to
675 * it. The structure may be changed asynchronously only if each
676 * field is written atomically.
677 * 3. Update dev->stats asynchronously and atomically, and define
680 * void (*ndo_vlan_rx_register)(struct net_device *dev, struct vlan_group *grp);
681 * If device support VLAN receive accleration
682 * (ie. dev->features & NETIF_F_HW_VLAN_RX), then this function is called
683 * when vlan groups for the device changes. Note: grp is NULL
684 * if no vlan's groups are being used.
686 * void (*ndo_vlan_rx_add_vid)(struct net_device *dev, unsigned short vid);
687 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
688 * this function is called when a VLAN id is registered.
690 * void (*ndo_vlan_rx_kill_vid)(struct net_device *dev, unsigned short vid);
691 * If device support VLAN filtering (dev->features & NETIF_F_HW_VLAN_FILTER)
692 * this function is called when a VLAN id is unregistered.
694 * void (*ndo_poll_controller)(struct net_device *dev);
696 * SR-IOV management functions.
697 * int (*ndo_set_vf_mac)(struct net_device *dev, int vf, u8* mac);
698 * int (*ndo_set_vf_vlan)(struct net_device *dev, int vf, u16 vlan, u8 qos);
699 * int (*ndo_set_vf_tx_rate)(struct net_device *dev, int vf, int rate);
700 * int (*ndo_get_vf_config)(struct net_device *dev,
701 * int vf, struct ifla_vf_info *ivf);
702 * int (*ndo_set_vf_port)(struct net_device *dev, int vf,
703 * struct nlattr *port[]);
704 * int (*ndo_get_vf_port)(struct net_device *dev, int vf, struct sk_buff *skb);
706 #define HAVE_NET_DEVICE_OPS
707 struct net_device_ops
{
708 int (*ndo_init
)(struct net_device
*dev
);
709 void (*ndo_uninit
)(struct net_device
*dev
);
710 int (*ndo_open
)(struct net_device
*dev
);
711 int (*ndo_stop
)(struct net_device
*dev
);
712 netdev_tx_t (*ndo_start_xmit
) (struct sk_buff
*skb
,
713 struct net_device
*dev
);
714 u16 (*ndo_select_queue
)(struct net_device
*dev
,
715 struct sk_buff
*skb
);
716 void (*ndo_change_rx_flags
)(struct net_device
*dev
,
718 void (*ndo_set_rx_mode
)(struct net_device
*dev
);
719 void (*ndo_set_multicast_list
)(struct net_device
*dev
);
720 int (*ndo_set_mac_address
)(struct net_device
*dev
,
722 int (*ndo_validate_addr
)(struct net_device
*dev
);
723 int (*ndo_do_ioctl
)(struct net_device
*dev
,
724 struct ifreq
*ifr
, int cmd
);
725 int (*ndo_set_config
)(struct net_device
*dev
,
727 int (*ndo_change_mtu
)(struct net_device
*dev
,
729 int (*ndo_neigh_setup
)(struct net_device
*dev
,
730 struct neigh_parms
*);
731 void (*ndo_tx_timeout
) (struct net_device
*dev
);
733 struct rtnl_link_stats64
* (*ndo_get_stats64
)(struct net_device
*dev
,
734 struct rtnl_link_stats64
*storage
);
735 struct net_device_stats
* (*ndo_get_stats
)(struct net_device
*dev
);
737 void (*ndo_vlan_rx_register
)(struct net_device
*dev
,
738 struct vlan_group
*grp
);
739 void (*ndo_vlan_rx_add_vid
)(struct net_device
*dev
,
741 void (*ndo_vlan_rx_kill_vid
)(struct net_device
*dev
,
743 #ifdef CONFIG_NET_POLL_CONTROLLER
744 void (*ndo_poll_controller
)(struct net_device
*dev
);
745 int (*ndo_netpoll_setup
)(struct net_device
*dev
,
746 struct netpoll_info
*info
);
747 void (*ndo_netpoll_cleanup
)(struct net_device
*dev
);
749 int (*ndo_set_vf_mac
)(struct net_device
*dev
,
751 int (*ndo_set_vf_vlan
)(struct net_device
*dev
,
752 int queue
, u16 vlan
, u8 qos
);
753 int (*ndo_set_vf_tx_rate
)(struct net_device
*dev
,
755 int (*ndo_get_vf_config
)(struct net_device
*dev
,
757 struct ifla_vf_info
*ivf
);
758 int (*ndo_set_vf_port
)(struct net_device
*dev
,
760 struct nlattr
*port
[]);
761 int (*ndo_get_vf_port
)(struct net_device
*dev
,
762 int vf
, struct sk_buff
*skb
);
763 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
764 int (*ndo_fcoe_enable
)(struct net_device
*dev
);
765 int (*ndo_fcoe_disable
)(struct net_device
*dev
);
766 int (*ndo_fcoe_ddp_setup
)(struct net_device
*dev
,
768 struct scatterlist
*sgl
,
770 int (*ndo_fcoe_ddp_done
)(struct net_device
*dev
,
772 #define NETDEV_FCOE_WWNN 0
773 #define NETDEV_FCOE_WWPN 1
774 int (*ndo_fcoe_get_wwn
)(struct net_device
*dev
,
783 * This is the first field of the "visible" part of this structure
784 * (i.e. as seen by users in the "Space.c" file). It is the name
789 struct pm_qos_request_list pm_qos_req
;
791 /* device name hash chain */
792 struct hlist_node name_hlist
;
796 unsigned long mem_end
; /* shared mem end */
797 unsigned long mem_start
; /* shared mem start */
798 unsigned long base_addr
; /* device I/O address */
799 unsigned int irq
; /* device IRQ number */
802 * Some hardware also needs these fields, but they are not
803 * part of the usual set specified in Space.c.
806 unsigned char if_port
; /* Selectable AUI, TP,..*/
807 unsigned char dma
; /* DMA channel */
811 struct list_head dev_list
;
812 struct list_head napi_list
;
813 struct list_head unreg_list
;
815 /* Net device features */
816 unsigned long features
;
817 #define NETIF_F_SG 1 /* Scatter/gather IO. */
818 #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
819 #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
820 #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
821 #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
822 #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
823 #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
824 #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
825 #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
826 #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
827 #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
828 #define NETIF_F_GSO 2048 /* Enable software GSO. */
829 #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
830 /* do not use LLTX in new drivers */
831 #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
832 #define NETIF_F_GRO 16384 /* Generic receive offload */
833 #define NETIF_F_LRO 32768 /* large receive offload */
835 /* the GSO_MASK reserves bits 16 through 23 */
836 #define NETIF_F_FCOE_CRC (1 << 24) /* FCoE CRC32 */
837 #define NETIF_F_SCTP_CSUM (1 << 25) /* SCTP checksum offload */
838 #define NETIF_F_FCOE_MTU (1 << 26) /* Supports max FCoE MTU, 2158 bytes*/
839 #define NETIF_F_NTUPLE (1 << 27) /* N-tuple filters supported */
840 #define NETIF_F_RXHASH (1 << 28) /* Receive hashing offload */
842 /* Segmentation offload features */
843 #define NETIF_F_GSO_SHIFT 16
844 #define NETIF_F_GSO_MASK 0x00ff0000
845 #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
846 #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
847 #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
848 #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
849 #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
850 #define NETIF_F_FSO (SKB_GSO_FCOE << NETIF_F_GSO_SHIFT)
852 /* List of features with software fallbacks. */
853 #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | \
854 NETIF_F_TSO6 | NETIF_F_UFO)
857 #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
858 #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
859 #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
860 #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
863 * If one device supports one of these features, then enable them
864 * for all in netdev_increment_features.
866 #define NETIF_F_ONE_FOR_ALL (NETIF_F_GSO_SOFTWARE | NETIF_F_GSO_ROBUST | \
867 NETIF_F_SG | NETIF_F_HIGHDMA | \
870 /* Interface index. Unique device identifier */
874 struct net_device_stats stats
;
876 #ifdef CONFIG_WIRELESS_EXT
877 /* List of functions to handle Wireless Extensions (instead of ioctl).
878 * See <net/iw_handler.h> for details. Jean II */
879 const struct iw_handler_def
* wireless_handlers
;
880 /* Instance data managed by the core of Wireless Extensions. */
881 struct iw_public_data
* wireless_data
;
883 /* Management operations */
884 const struct net_device_ops
*netdev_ops
;
885 const struct ethtool_ops
*ethtool_ops
;
887 /* Hardware header description */
888 const struct header_ops
*header_ops
;
890 unsigned int flags
; /* interface flags (a la BSD) */
891 unsigned short gflags
;
892 unsigned short priv_flags
; /* Like 'flags' but invisible to userspace. */
893 unsigned short padded
; /* How much padding added by alloc_netdev() */
895 unsigned char operstate
; /* RFC2863 operstate */
896 unsigned char link_mode
; /* mapping policy to operstate */
898 unsigned int mtu
; /* interface MTU value */
899 unsigned short type
; /* interface hardware type */
900 unsigned short hard_header_len
; /* hardware hdr length */
902 /* extra head- and tailroom the hardware may need, but not in all cases
903 * can this be guaranteed, especially tailroom. Some cases also use
904 * LL_MAX_HEADER instead to allocate the skb.
906 unsigned short needed_headroom
;
907 unsigned short needed_tailroom
;
909 struct net_device
*master
; /* Pointer to master device of a group,
910 * which this device is member of.
913 /* Interface address info. */
914 unsigned char perm_addr
[MAX_ADDR_LEN
]; /* permanent hw address */
915 unsigned char addr_assign_type
; /* hw address assignment type */
916 unsigned char addr_len
; /* hardware address length */
917 unsigned short dev_id
; /* for shared network cards */
919 spinlock_t addr_list_lock
;
920 struct netdev_hw_addr_list uc
; /* Unicast mac addresses */
921 struct netdev_hw_addr_list mc
; /* Multicast mac addresses */
923 unsigned int promiscuity
;
924 unsigned int allmulti
;
927 /* Protocol specific pointers */
929 #ifdef CONFIG_NET_DSA
930 void *dsa_ptr
; /* dsa specific data */
932 void *atalk_ptr
; /* AppleTalk link */
933 void *ip_ptr
; /* IPv4 specific data */
934 void *dn_ptr
; /* DECnet specific data */
935 void *ip6_ptr
; /* IPv6 specific data */
936 void *ec_ptr
; /* Econet specific data */
937 void *ax25_ptr
; /* AX.25 specific data */
938 struct wireless_dev
*ieee80211_ptr
; /* IEEE 802.11 specific data,
939 assign before registering */
942 * Cache line mostly used on receive path (including eth_type_trans())
944 unsigned long last_rx
; /* Time of last Rx */
945 /* Interface address info used in eth_type_trans() */
946 unsigned char *dev_addr
; /* hw address, (before bcast
947 because most packets are
950 struct netdev_hw_addr_list dev_addrs
; /* list of device
953 unsigned char broadcast
[MAX_ADDR_LEN
]; /* hw bcast add */
956 struct kset
*queues_kset
;
958 struct netdev_rx_queue
*_rx
;
960 /* Number of RX queues allocated at alloc_netdev_mq() time */
961 unsigned int num_rx_queues
;
964 struct netdev_queue rx_queue
;
965 rx_handler_func_t
*rx_handler
;
966 void *rx_handler_data
;
968 struct netdev_queue
*_tx ____cacheline_aligned_in_smp
;
970 /* Number of TX queues allocated at alloc_netdev_mq() time */
971 unsigned int num_tx_queues
;
973 /* Number of TX queues currently active in device */
974 unsigned int real_num_tx_queues
;
976 /* root qdisc from userspace point of view */
979 unsigned long tx_queue_len
; /* Max frames per queue allowed */
980 spinlock_t tx_global_lock
;
982 * One part is mostly used on xmit path (device)
984 /* These may be needed for future network-power-down code. */
987 * trans_start here is expensive for high speed devices on SMP,
988 * please use netdev_queue->trans_start instead.
990 unsigned long trans_start
; /* Time (in jiffies) of last Tx */
992 int watchdog_timeo
; /* used by dev_watchdog() */
993 struct timer_list watchdog_timer
;
995 /* Number of references to this device */
996 atomic_t refcnt ____cacheline_aligned_in_smp
;
998 /* delayed register/unregister */
999 struct list_head todo_list
;
1000 /* device index hash chain */
1001 struct hlist_node index_hlist
;
1003 struct list_head link_watch_list
;
1005 /* register/unregister state machine */
1006 enum { NETREG_UNINITIALIZED
=0,
1007 NETREG_REGISTERED
, /* completed register_netdevice */
1008 NETREG_UNREGISTERING
, /* called unregister_netdevice */
1009 NETREG_UNREGISTERED
, /* completed unregister todo */
1010 NETREG_RELEASED
, /* called free_netdev */
1011 NETREG_DUMMY
, /* dummy device for NAPI poll */
1015 RTNL_LINK_INITIALIZED
,
1016 RTNL_LINK_INITIALIZING
,
1017 } rtnl_link_state
:16;
1019 /* Called from unregister, can be used to call free_netdev */
1020 void (*destructor
)(struct net_device
*dev
);
1022 #ifdef CONFIG_NETPOLL
1023 struct netpoll_info
*npinfo
;
1026 #ifdef CONFIG_NET_NS
1027 /* Network namespace this network device is inside */
1031 /* mid-layer private */
1035 struct garp_port
*garp_port
;
1037 /* class/net/name entry */
1039 /* space for optional device, statistics, and wireless sysfs groups */
1040 const struct attribute_group
*sysfs_groups
[4];
1042 /* rtnetlink link ops */
1043 const struct rtnl_link_ops
*rtnl_link_ops
;
1045 /* VLAN feature mask */
1046 unsigned long vlan_features
;
1048 /* for setting kernel sock attribute on TCP connection setup */
1049 #define GSO_MAX_SIZE 65536
1050 unsigned int gso_max_size
;
1053 /* Data Center Bridging netlink ops */
1054 const struct dcbnl_rtnl_ops
*dcbnl_ops
;
1057 #if defined(CONFIG_FCOE) || defined(CONFIG_FCOE_MODULE)
1058 /* max exchange id for FCoE LRO by ddp */
1059 unsigned int fcoe_ddp_xid
;
1061 /* n-tuple filter list attached to this device */
1062 struct ethtool_rx_ntuple_list ethtool_ntuple_list
;
1064 /* phy device may attach itself for hardware timestamping */
1065 struct phy_device
*phydev
;
1067 #define to_net_dev(d) container_of(d, struct net_device, dev)
1069 #define NETDEV_ALIGN 32
1072 struct netdev_queue
*netdev_get_tx_queue(const struct net_device
*dev
,
1075 return &dev
->_tx
[index
];
1078 static inline void netdev_for_each_tx_queue(struct net_device
*dev
,
1079 void (*f
)(struct net_device
*,
1080 struct netdev_queue
*,
1086 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
1087 f(dev
, &dev
->_tx
[i
], arg
);
1091 * Net namespace inlines
1094 struct net
*dev_net(const struct net_device
*dev
)
1096 return read_pnet(&dev
->nd_net
);
1100 void dev_net_set(struct net_device
*dev
, struct net
*net
)
1102 #ifdef CONFIG_NET_NS
1103 release_net(dev
->nd_net
);
1104 dev
->nd_net
= hold_net(net
);
1108 static inline bool netdev_uses_dsa_tags(struct net_device
*dev
)
1110 #ifdef CONFIG_NET_DSA_TAG_DSA
1111 if (dev
->dsa_ptr
!= NULL
)
1112 return dsa_uses_dsa_tags(dev
->dsa_ptr
);
1118 #ifndef CONFIG_NET_NS
1119 static inline void skb_set_dev(struct sk_buff
*skb
, struct net_device
*dev
)
1123 #else /* CONFIG_NET_NS */
1124 void skb_set_dev(struct sk_buff
*skb
, struct net_device
*dev
);
1127 static inline bool netdev_uses_trailer_tags(struct net_device
*dev
)
1129 #ifdef CONFIG_NET_DSA_TAG_TRAILER
1130 if (dev
->dsa_ptr
!= NULL
)
1131 return dsa_uses_trailer_tags(dev
->dsa_ptr
);
1138 * netdev_priv - access network device private data
1139 * @dev: network device
1141 * Get network device private data
1143 static inline void *netdev_priv(const struct net_device
*dev
)
1145 return (char *)dev
+ ALIGN(sizeof(struct net_device
), NETDEV_ALIGN
);
1148 /* Set the sysfs physical device reference for the network logical device
1149 * if set prior to registration will cause a symlink during initialization.
1151 #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
1153 /* Set the sysfs device type for the network logical device to allow
1154 * fin grained indentification of different network device types. For
1155 * example Ethernet, Wirelss LAN, Bluetooth, WiMAX etc.
1157 #define SET_NETDEV_DEVTYPE(net, devtype) ((net)->dev.type = (devtype))
1160 * netif_napi_add - initialize a napi context
1161 * @dev: network device
1162 * @napi: napi context
1163 * @poll: polling function
1164 * @weight: default weight
1166 * netif_napi_add() must be used to initialize a napi context prior to calling
1167 * *any* of the other napi related functions.
1169 void netif_napi_add(struct net_device
*dev
, struct napi_struct
*napi
,
1170 int (*poll
)(struct napi_struct
*, int), int weight
);
1173 * netif_napi_del - remove a napi context
1174 * @napi: napi context
1176 * netif_napi_del() removes a napi context from the network device napi list
1178 void netif_napi_del(struct napi_struct
*napi
);
1180 struct napi_gro_cb
{
1181 /* Virtual address of skb_shinfo(skb)->frags[0].page + offset. */
1184 /* Length of frag0. */
1185 unsigned int frag0_len
;
1187 /* This indicates where we are processing relative to skb->data. */
1190 /* This is non-zero if the packet may be of the same flow. */
1193 /* This is non-zero if the packet cannot be merged with the new skb. */
1196 /* Number of segments aggregated. */
1203 #define NAPI_GRO_CB(skb) ((struct napi_gro_cb *)(skb)->cb)
1205 struct packet_type
{
1206 __be16 type
; /* This is really htons(ether_type). */
1207 struct net_device
*dev
; /* NULL is wildcarded here */
1208 int (*func
) (struct sk_buff
*,
1209 struct net_device
*,
1210 struct packet_type
*,
1211 struct net_device
*);
1212 struct sk_buff
*(*gso_segment
)(struct sk_buff
*skb
,
1214 int (*gso_send_check
)(struct sk_buff
*skb
);
1215 struct sk_buff
**(*gro_receive
)(struct sk_buff
**head
,
1216 struct sk_buff
*skb
);
1217 int (*gro_complete
)(struct sk_buff
*skb
);
1218 void *af_packet_priv
;
1219 struct list_head list
;
1222 #include <linux/interrupt.h>
1223 #include <linux/notifier.h>
1225 extern rwlock_t dev_base_lock
; /* Device list lock */
1228 #define for_each_netdev(net, d) \
1229 list_for_each_entry(d, &(net)->dev_base_head, dev_list)
1230 #define for_each_netdev_reverse(net, d) \
1231 list_for_each_entry_reverse(d, &(net)->dev_base_head, dev_list)
1232 #define for_each_netdev_rcu(net, d) \
1233 list_for_each_entry_rcu(d, &(net)->dev_base_head, dev_list)
1234 #define for_each_netdev_safe(net, d, n) \
1235 list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
1236 #define for_each_netdev_continue(net, d) \
1237 list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
1238 #define for_each_netdev_continue_rcu(net, d) \
1239 list_for_each_entry_continue_rcu(d, &(net)->dev_base_head, dev_list)
1240 #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
1242 static inline struct net_device
*next_net_device(struct net_device
*dev
)
1244 struct list_head
*lh
;
1248 lh
= dev
->dev_list
.next
;
1249 return lh
== &net
->dev_base_head
? NULL
: net_device_entry(lh
);
1252 static inline struct net_device
*next_net_device_rcu(struct net_device
*dev
)
1254 struct list_head
*lh
;
1258 lh
= rcu_dereference(dev
->dev_list
.next
);
1259 return lh
== &net
->dev_base_head
? NULL
: net_device_entry(lh
);
1262 static inline struct net_device
*first_net_device(struct net
*net
)
1264 return list_empty(&net
->dev_base_head
) ? NULL
:
1265 net_device_entry(net
->dev_base_head
.next
);
1268 extern int netdev_boot_setup_check(struct net_device
*dev
);
1269 extern unsigned long netdev_boot_base(const char *prefix
, int unit
);
1270 extern struct net_device
*dev_getbyhwaddr(struct net
*net
, unsigned short type
, char *hwaddr
);
1271 extern struct net_device
*dev_getfirstbyhwtype(struct net
*net
, unsigned short type
);
1272 extern struct net_device
*__dev_getfirstbyhwtype(struct net
*net
, unsigned short type
);
1273 extern void dev_add_pack(struct packet_type
*pt
);
1274 extern void dev_remove_pack(struct packet_type
*pt
);
1275 extern void __dev_remove_pack(struct packet_type
*pt
);
1277 extern struct net_device
*dev_get_by_flags_rcu(struct net
*net
, unsigned short flags
,
1278 unsigned short mask
);
1279 extern struct net_device
*dev_get_by_name(struct net
*net
, const char *name
);
1280 extern struct net_device
*dev_get_by_name_rcu(struct net
*net
, const char *name
);
1281 extern struct net_device
*__dev_get_by_name(struct net
*net
, const char *name
);
1282 extern int dev_alloc_name(struct net_device
*dev
, const char *name
);
1283 extern int dev_open(struct net_device
*dev
);
1284 extern int dev_close(struct net_device
*dev
);
1285 extern void dev_disable_lro(struct net_device
*dev
);
1286 extern int dev_queue_xmit(struct sk_buff
*skb
);
1287 extern int register_netdevice(struct net_device
*dev
);
1288 extern void unregister_netdevice_queue(struct net_device
*dev
,
1289 struct list_head
*head
);
1290 extern void unregister_netdevice_many(struct list_head
*head
);
1291 static inline void unregister_netdevice(struct net_device
*dev
)
1293 unregister_netdevice_queue(dev
, NULL
);
1296 extern void free_netdev(struct net_device
*dev
);
1297 extern void synchronize_net(void);
1298 extern int register_netdevice_notifier(struct notifier_block
*nb
);
1299 extern int unregister_netdevice_notifier(struct notifier_block
*nb
);
1300 extern int init_dummy_netdev(struct net_device
*dev
);
1301 extern void netdev_resync_ops(struct net_device
*dev
);
1303 extern int call_netdevice_notifiers(unsigned long val
, struct net_device
*dev
);
1304 extern struct net_device
*dev_get_by_index(struct net
*net
, int ifindex
);
1305 extern struct net_device
*__dev_get_by_index(struct net
*net
, int ifindex
);
1306 extern struct net_device
*dev_get_by_index_rcu(struct net
*net
, int ifindex
);
1307 extern int dev_restart(struct net_device
*dev
);
1308 #ifdef CONFIG_NETPOLL_TRAP
1309 extern int netpoll_trap(void);
1311 extern int skb_gro_receive(struct sk_buff
**head
,
1312 struct sk_buff
*skb
);
1313 extern void skb_gro_reset_offset(struct sk_buff
*skb
);
1315 static inline unsigned int skb_gro_offset(const struct sk_buff
*skb
)
1317 return NAPI_GRO_CB(skb
)->data_offset
;
1320 static inline unsigned int skb_gro_len(const struct sk_buff
*skb
)
1322 return skb
->len
- NAPI_GRO_CB(skb
)->data_offset
;
1325 static inline void skb_gro_pull(struct sk_buff
*skb
, unsigned int len
)
1327 NAPI_GRO_CB(skb
)->data_offset
+= len
;
1330 static inline void *skb_gro_header_fast(struct sk_buff
*skb
,
1331 unsigned int offset
)
1333 return NAPI_GRO_CB(skb
)->frag0
+ offset
;
1336 static inline int skb_gro_header_hard(struct sk_buff
*skb
, unsigned int hlen
)
1338 return NAPI_GRO_CB(skb
)->frag0_len
< hlen
;
1341 static inline void *skb_gro_header_slow(struct sk_buff
*skb
, unsigned int hlen
,
1342 unsigned int offset
)
1344 NAPI_GRO_CB(skb
)->frag0
= NULL
;
1345 NAPI_GRO_CB(skb
)->frag0_len
= 0;
1346 return pskb_may_pull(skb
, hlen
) ? skb
->data
+ offset
: NULL
;
1349 static inline void *skb_gro_mac_header(struct sk_buff
*skb
)
1351 return NAPI_GRO_CB(skb
)->frag0
?: skb_mac_header(skb
);
1354 static inline void *skb_gro_network_header(struct sk_buff
*skb
)
1356 return (NAPI_GRO_CB(skb
)->frag0
?: skb
->data
) +
1357 skb_network_offset(skb
);
1360 static inline int dev_hard_header(struct sk_buff
*skb
, struct net_device
*dev
,
1361 unsigned short type
,
1362 const void *daddr
, const void *saddr
,
1365 if (!dev
->header_ops
|| !dev
->header_ops
->create
)
1368 return dev
->header_ops
->create(skb
, dev
, type
, daddr
, saddr
, len
);
1371 static inline int dev_parse_header(const struct sk_buff
*skb
,
1372 unsigned char *haddr
)
1374 const struct net_device
*dev
= skb
->dev
;
1376 if (!dev
->header_ops
|| !dev
->header_ops
->parse
)
1378 return dev
->header_ops
->parse(skb
, haddr
);
1381 typedef int gifconf_func_t(struct net_device
* dev
, char __user
* bufptr
, int len
);
1382 extern int register_gifconf(unsigned int family
, gifconf_func_t
* gifconf
);
1383 static inline int unregister_gifconf(unsigned int family
)
1385 return register_gifconf(family
, NULL
);
1389 * Incoming packets are placed on per-cpu queues
1391 struct softnet_data
{
1392 struct Qdisc
*output_queue
;
1393 struct Qdisc
**output_queue_tailp
;
1394 struct list_head poll_list
;
1395 struct sk_buff
*completion_queue
;
1396 struct sk_buff_head process_queue
;
1399 unsigned int processed
;
1400 unsigned int time_squeeze
;
1401 unsigned int cpu_collision
;
1402 unsigned int received_rps
;
1405 struct softnet_data
*rps_ipi_list
;
1407 /* Elements below can be accessed between CPUs for RPS */
1408 struct call_single_data csd ____cacheline_aligned_in_smp
;
1409 struct softnet_data
*rps_ipi_next
;
1411 unsigned int input_queue_head
;
1412 unsigned int input_queue_tail
;
1415 struct sk_buff_head input_pkt_queue
;
1416 struct napi_struct backlog
;
1419 static inline void input_queue_head_incr(struct softnet_data
*sd
)
1422 sd
->input_queue_head
++;
1426 static inline void input_queue_tail_incr_save(struct softnet_data
*sd
,
1427 unsigned int *qtail
)
1430 *qtail
= ++sd
->input_queue_tail
;
1434 DECLARE_PER_CPU_ALIGNED(struct softnet_data
, softnet_data
);
1436 #define HAVE_NETIF_QUEUE
1438 extern void __netif_schedule(struct Qdisc
*q
);
1440 static inline void netif_schedule_queue(struct netdev_queue
*txq
)
1442 if (!test_bit(__QUEUE_STATE_XOFF
, &txq
->state
))
1443 __netif_schedule(txq
->qdisc
);
1446 static inline void netif_tx_schedule_all(struct net_device
*dev
)
1450 for (i
= 0; i
< dev
->num_tx_queues
; i
++)
1451 netif_schedule_queue(netdev_get_tx_queue(dev
, i
));
1454 static inline void netif_tx_start_queue(struct netdev_queue
*dev_queue
)
1456 clear_bit(__QUEUE_STATE_XOFF
, &dev_queue
->state
);
1460 * netif_start_queue - allow transmit
1461 * @dev: network device
1463 * Allow upper layers to call the device hard_start_xmit routine.
1465 static inline void netif_start_queue(struct net_device
*dev
)
1467 netif_tx_start_queue(netdev_get_tx_queue(dev
, 0));
1470 static inline void netif_tx_start_all_queues(struct net_device
*dev
)
1474 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
1475 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
1476 netif_tx_start_queue(txq
);
1480 static inline void netif_tx_wake_queue(struct netdev_queue
*dev_queue
)
1482 #ifdef CONFIG_NETPOLL_TRAP
1483 if (netpoll_trap()) {
1484 netif_tx_start_queue(dev_queue
);
1488 if (test_and_clear_bit(__QUEUE_STATE_XOFF
, &dev_queue
->state
))
1489 __netif_schedule(dev_queue
->qdisc
);
1493 * netif_wake_queue - restart transmit
1494 * @dev: network device
1496 * Allow upper layers to call the device hard_start_xmit routine.
1497 * Used for flow control when transmit resources are available.
1499 static inline void netif_wake_queue(struct net_device
*dev
)
1501 netif_tx_wake_queue(netdev_get_tx_queue(dev
, 0));
1504 static inline void netif_tx_wake_all_queues(struct net_device
*dev
)
1508 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
1509 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
1510 netif_tx_wake_queue(txq
);
1514 static inline void netif_tx_stop_queue(struct netdev_queue
*dev_queue
)
1516 set_bit(__QUEUE_STATE_XOFF
, &dev_queue
->state
);
1520 * netif_stop_queue - stop transmitted packets
1521 * @dev: network device
1523 * Stop upper layers calling the device hard_start_xmit routine.
1524 * Used for flow control when transmit resources are unavailable.
1526 static inline void netif_stop_queue(struct net_device
*dev
)
1528 netif_tx_stop_queue(netdev_get_tx_queue(dev
, 0));
1531 static inline void netif_tx_stop_all_queues(struct net_device
*dev
)
1535 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
1536 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
1537 netif_tx_stop_queue(txq
);
1541 static inline int netif_tx_queue_stopped(const struct netdev_queue
*dev_queue
)
1543 return test_bit(__QUEUE_STATE_XOFF
, &dev_queue
->state
);
1547 * netif_queue_stopped - test if transmit queue is flowblocked
1548 * @dev: network device
1550 * Test if transmit queue on device is currently unable to send.
1552 static inline int netif_queue_stopped(const struct net_device
*dev
)
1554 return netif_tx_queue_stopped(netdev_get_tx_queue(dev
, 0));
1557 static inline int netif_tx_queue_frozen(const struct netdev_queue
*dev_queue
)
1559 return test_bit(__QUEUE_STATE_FROZEN
, &dev_queue
->state
);
1563 * netif_running - test if up
1564 * @dev: network device
1566 * Test if the device has been brought up.
1568 static inline int netif_running(const struct net_device
*dev
)
1570 return test_bit(__LINK_STATE_START
, &dev
->state
);
1574 * Routines to manage the subqueues on a device. We only need start
1575 * stop, and a check if it's stopped. All other device management is
1576 * done at the overall netdevice level.
1577 * Also test the device if we're multiqueue.
1581 * netif_start_subqueue - allow sending packets on subqueue
1582 * @dev: network device
1583 * @queue_index: sub queue index
1585 * Start individual transmit queue of a device with multiple transmit queues.
1587 static inline void netif_start_subqueue(struct net_device
*dev
, u16 queue_index
)
1589 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, queue_index
);
1591 netif_tx_start_queue(txq
);
1595 * netif_stop_subqueue - stop sending packets on subqueue
1596 * @dev: network device
1597 * @queue_index: sub queue index
1599 * Stop individual transmit queue of a device with multiple transmit queues.
1601 static inline void netif_stop_subqueue(struct net_device
*dev
, u16 queue_index
)
1603 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, queue_index
);
1604 #ifdef CONFIG_NETPOLL_TRAP
1608 netif_tx_stop_queue(txq
);
1612 * netif_subqueue_stopped - test status of subqueue
1613 * @dev: network device
1614 * @queue_index: sub queue index
1616 * Check individual transmit queue of a device with multiple transmit queues.
1618 static inline int __netif_subqueue_stopped(const struct net_device
*dev
,
1621 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, queue_index
);
1623 return netif_tx_queue_stopped(txq
);
1626 static inline int netif_subqueue_stopped(const struct net_device
*dev
,
1627 struct sk_buff
*skb
)
1629 return __netif_subqueue_stopped(dev
, skb_get_queue_mapping(skb
));
1633 * netif_wake_subqueue - allow sending packets on subqueue
1634 * @dev: network device
1635 * @queue_index: sub queue index
1637 * Resume individual transmit queue of a device with multiple transmit queues.
1639 static inline void netif_wake_subqueue(struct net_device
*dev
, u16 queue_index
)
1641 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, queue_index
);
1642 #ifdef CONFIG_NETPOLL_TRAP
1646 if (test_and_clear_bit(__QUEUE_STATE_XOFF
, &txq
->state
))
1647 __netif_schedule(txq
->qdisc
);
1651 * netif_is_multiqueue - test if device has multiple transmit queues
1652 * @dev: network device
1654 * Check if device has multiple transmit queues
1656 static inline int netif_is_multiqueue(const struct net_device
*dev
)
1658 return (dev
->num_tx_queues
> 1);
1661 extern void netif_set_real_num_tx_queues(struct net_device
*dev
,
1664 /* Use this variant when it is known for sure that it
1665 * is executing from hardware interrupt context or with hardware interrupts
1668 extern void dev_kfree_skb_irq(struct sk_buff
*skb
);
1670 /* Use this variant in places where it could be invoked
1671 * from either hardware interrupt or other context, with hardware interrupts
1672 * either disabled or enabled.
1674 extern void dev_kfree_skb_any(struct sk_buff
*skb
);
1676 #define HAVE_NETIF_RX 1
1677 extern int netif_rx(struct sk_buff
*skb
);
1678 extern int netif_rx_ni(struct sk_buff
*skb
);
1679 #define HAVE_NETIF_RECEIVE_SKB 1
1680 extern int netif_receive_skb(struct sk_buff
*skb
);
1681 #ifdef CONFIG_INET_GRO
1682 extern void generic_napi_gro_flush(struct napi_struct
*napi
);
1683 #endif /* CONFIG_INET_GRO */
1684 extern gro_result_t
dev_gro_receive(struct napi_struct
*napi
,
1685 struct sk_buff
*skb
);
1686 extern gro_result_t
napi_skb_finish(gro_result_t ret
, struct sk_buff
*skb
);
1687 extern gro_result_t
napi_gro_receive(struct napi_struct
*napi
,
1688 struct sk_buff
*skb
);
1689 extern void napi_reuse_skb(struct napi_struct
*napi
,
1690 struct sk_buff
*skb
);
1691 extern struct sk_buff
* napi_get_frags(struct napi_struct
*napi
);
1692 extern gro_result_t
napi_frags_finish(struct napi_struct
*napi
,
1693 struct sk_buff
*skb
,
1695 extern struct sk_buff
* napi_frags_skb(struct napi_struct
*napi
);
1696 extern gro_result_t
napi_gro_frags(struct napi_struct
*napi
);
1698 static inline void napi_free_frags(struct napi_struct
*napi
)
1700 kfree_skb(napi
->skb
);
1704 extern int netdev_rx_handler_register(struct net_device
*dev
,
1705 rx_handler_func_t
*rx_handler
,
1706 void *rx_handler_data
);
1707 extern void netdev_rx_handler_unregister(struct net_device
*dev
);
1709 extern void netif_nit_deliver(struct sk_buff
*skb
);
1710 extern int dev_valid_name(const char *name
);
1711 extern int dev_ioctl(struct net
*net
, unsigned int cmd
, void __user
*);
1712 extern int dev_ethtool(struct net
*net
, struct ifreq
*);
1713 extern unsigned dev_get_flags(const struct net_device
*);
1714 extern int __dev_change_flags(struct net_device
*, unsigned int flags
);
1715 extern int dev_change_flags(struct net_device
*, unsigned);
1716 extern void __dev_notify_flags(struct net_device
*, unsigned int old_flags
);
1717 extern int dev_change_name(struct net_device
*, const char *);
1718 extern int dev_set_alias(struct net_device
*, const char *, size_t);
1719 extern int dev_change_net_namespace(struct net_device
*,
1720 struct net
*, const char *);
1721 extern int dev_set_mtu(struct net_device
*, int);
1722 extern int dev_set_mac_address(struct net_device
*,
1724 extern int dev_hard_start_xmit(struct sk_buff
*skb
,
1725 struct net_device
*dev
,
1726 struct netdev_queue
*txq
);
1727 extern int dev_forward_skb(struct net_device
*dev
,
1728 struct sk_buff
*skb
);
1730 extern int netdev_budget
;
1732 /* Called by rtnetlink.c:rtnl_unlock() */
1733 extern void netdev_run_todo(void);
1736 * dev_put - release reference to device
1737 * @dev: network device
1739 * Release reference to device to allow it to be freed.
1741 static inline void dev_put(struct net_device
*dev
)
1743 atomic_dec(&dev
->refcnt
);
1747 * dev_hold - get reference to device
1748 * @dev: network device
1750 * Hold reference to device to keep it from being freed.
1752 static inline void dev_hold(struct net_device
*dev
)
1754 atomic_inc(&dev
->refcnt
);
1757 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
1758 * and _off may be called from IRQ context, but it is caller
1759 * who is responsible for serialization of these calls.
1761 * The name carrier is inappropriate, these functions should really be
1762 * called netif_lowerlayer_*() because they represent the state of any
1763 * kind of lower layer not just hardware media.
1766 extern void linkwatch_fire_event(struct net_device
*dev
);
1767 extern void linkwatch_forget_dev(struct net_device
*dev
);
1770 * netif_carrier_ok - test if carrier present
1771 * @dev: network device
1773 * Check if carrier is present on device
1775 static inline int netif_carrier_ok(const struct net_device
*dev
)
1777 return !test_bit(__LINK_STATE_NOCARRIER
, &dev
->state
);
1780 extern unsigned long dev_trans_start(struct net_device
*dev
);
1782 extern void __netdev_watchdog_up(struct net_device
*dev
);
1784 extern void netif_carrier_on(struct net_device
*dev
);
1786 extern void netif_carrier_off(struct net_device
*dev
);
1788 extern void netif_notify_peers(struct net_device
*dev
);
1791 * netif_dormant_on - mark device as dormant.
1792 * @dev: network device
1794 * Mark device as dormant (as per RFC2863).
1796 * The dormant state indicates that the relevant interface is not
1797 * actually in a condition to pass packets (i.e., it is not 'up') but is
1798 * in a "pending" state, waiting for some external event. For "on-
1799 * demand" interfaces, this new state identifies the situation where the
1800 * interface is waiting for events to place it in the up state.
1803 static inline void netif_dormant_on(struct net_device
*dev
)
1805 if (!test_and_set_bit(__LINK_STATE_DORMANT
, &dev
->state
))
1806 linkwatch_fire_event(dev
);
1810 * netif_dormant_off - set device as not dormant.
1811 * @dev: network device
1813 * Device is not in dormant state.
1815 static inline void netif_dormant_off(struct net_device
*dev
)
1817 if (test_and_clear_bit(__LINK_STATE_DORMANT
, &dev
->state
))
1818 linkwatch_fire_event(dev
);
1822 * netif_dormant - test if carrier present
1823 * @dev: network device
1825 * Check if carrier is present on device
1827 static inline int netif_dormant(const struct net_device
*dev
)
1829 return test_bit(__LINK_STATE_DORMANT
, &dev
->state
);
1834 * netif_oper_up - test if device is operational
1835 * @dev: network device
1837 * Check if carrier is operational
1839 static inline int netif_oper_up(const struct net_device
*dev
)
1841 return (dev
->operstate
== IF_OPER_UP
||
1842 dev
->operstate
== IF_OPER_UNKNOWN
/* backward compat */);
1846 * netif_device_present - is device available or removed
1847 * @dev: network device
1849 * Check if device has not been removed from system.
1851 static inline int netif_device_present(struct net_device
*dev
)
1853 return test_bit(__LINK_STATE_PRESENT
, &dev
->state
);
1856 extern void netif_device_detach(struct net_device
*dev
);
1858 extern void netif_device_attach(struct net_device
*dev
);
1861 * Network interface message level settings
1863 #define HAVE_NETIF_MSG 1
1866 NETIF_MSG_DRV
= 0x0001,
1867 NETIF_MSG_PROBE
= 0x0002,
1868 NETIF_MSG_LINK
= 0x0004,
1869 NETIF_MSG_TIMER
= 0x0008,
1870 NETIF_MSG_IFDOWN
= 0x0010,
1871 NETIF_MSG_IFUP
= 0x0020,
1872 NETIF_MSG_RX_ERR
= 0x0040,
1873 NETIF_MSG_TX_ERR
= 0x0080,
1874 NETIF_MSG_TX_QUEUED
= 0x0100,
1875 NETIF_MSG_INTR
= 0x0200,
1876 NETIF_MSG_TX_DONE
= 0x0400,
1877 NETIF_MSG_RX_STATUS
= 0x0800,
1878 NETIF_MSG_PKTDATA
= 0x1000,
1879 NETIF_MSG_HW
= 0x2000,
1880 NETIF_MSG_WOL
= 0x4000,
1883 #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
1884 #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
1885 #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
1886 #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
1887 #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
1888 #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
1889 #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
1890 #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
1891 #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
1892 #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
1893 #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
1894 #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
1895 #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
1896 #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
1897 #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
1899 static inline u32
netif_msg_init(int debug_value
, int default_msg_enable_bits
)
1902 if (debug_value
< 0 || debug_value
>= (sizeof(u32
) * 8))
1903 return default_msg_enable_bits
;
1904 if (debug_value
== 0) /* no output */
1906 /* set low N bits */
1907 return (1 << debug_value
) - 1;
1910 static inline void __netif_tx_lock(struct netdev_queue
*txq
, int cpu
)
1912 spin_lock(&txq
->_xmit_lock
);
1913 txq
->xmit_lock_owner
= cpu
;
1916 static inline void __netif_tx_lock_bh(struct netdev_queue
*txq
)
1918 spin_lock_bh(&txq
->_xmit_lock
);
1919 txq
->xmit_lock_owner
= smp_processor_id();
1922 static inline int __netif_tx_trylock(struct netdev_queue
*txq
)
1924 int ok
= spin_trylock(&txq
->_xmit_lock
);
1926 txq
->xmit_lock_owner
= smp_processor_id();
1930 static inline void __netif_tx_unlock(struct netdev_queue
*txq
)
1932 txq
->xmit_lock_owner
= -1;
1933 spin_unlock(&txq
->_xmit_lock
);
1936 static inline void __netif_tx_unlock_bh(struct netdev_queue
*txq
)
1938 txq
->xmit_lock_owner
= -1;
1939 spin_unlock_bh(&txq
->_xmit_lock
);
1942 static inline void txq_trans_update(struct netdev_queue
*txq
)
1944 if (txq
->xmit_lock_owner
!= -1)
1945 txq
->trans_start
= jiffies
;
1949 * netif_tx_lock - grab network device transmit lock
1950 * @dev: network device
1952 * Get network device transmit lock
1954 static inline void netif_tx_lock(struct net_device
*dev
)
1959 spin_lock(&dev
->tx_global_lock
);
1960 cpu
= smp_processor_id();
1961 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
1962 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
1964 /* We are the only thread of execution doing a
1965 * freeze, but we have to grab the _xmit_lock in
1966 * order to synchronize with threads which are in
1967 * the ->hard_start_xmit() handler and already
1968 * checked the frozen bit.
1970 __netif_tx_lock(txq
, cpu
);
1971 set_bit(__QUEUE_STATE_FROZEN
, &txq
->state
);
1972 __netif_tx_unlock(txq
);
1976 static inline void netif_tx_lock_bh(struct net_device
*dev
)
1982 static inline void netif_tx_unlock(struct net_device
*dev
)
1986 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
1987 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
1989 /* No need to grab the _xmit_lock here. If the
1990 * queue is not stopped for another reason, we
1993 clear_bit(__QUEUE_STATE_FROZEN
, &txq
->state
);
1994 netif_schedule_queue(txq
);
1996 spin_unlock(&dev
->tx_global_lock
);
1999 static inline void netif_tx_unlock_bh(struct net_device
*dev
)
2001 netif_tx_unlock(dev
);
2005 #define HARD_TX_LOCK(dev, txq, cpu) { \
2006 if ((dev->features & NETIF_F_LLTX) == 0) { \
2007 __netif_tx_lock(txq, cpu); \
2011 #define HARD_TX_UNLOCK(dev, txq) { \
2012 if ((dev->features & NETIF_F_LLTX) == 0) { \
2013 __netif_tx_unlock(txq); \
2017 static inline void netif_tx_disable(struct net_device
*dev
)
2023 cpu
= smp_processor_id();
2024 for (i
= 0; i
< dev
->num_tx_queues
; i
++) {
2025 struct netdev_queue
*txq
= netdev_get_tx_queue(dev
, i
);
2027 __netif_tx_lock(txq
, cpu
);
2028 netif_tx_stop_queue(txq
);
2029 __netif_tx_unlock(txq
);
2034 static inline void netif_addr_lock(struct net_device
*dev
)
2036 spin_lock(&dev
->addr_list_lock
);
2039 static inline void netif_addr_lock_bh(struct net_device
*dev
)
2041 spin_lock_bh(&dev
->addr_list_lock
);
2044 static inline void netif_addr_unlock(struct net_device
*dev
)
2046 spin_unlock(&dev
->addr_list_lock
);
2049 static inline void netif_addr_unlock_bh(struct net_device
*dev
)
2051 spin_unlock_bh(&dev
->addr_list_lock
);
2055 * dev_addrs walker. Should be used only for read access. Call with
2056 * rcu_read_lock held.
2058 #define for_each_dev_addr(dev, ha) \
2059 list_for_each_entry_rcu(ha, &dev->dev_addrs.list, list)
2061 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
2063 extern void ether_setup(struct net_device
*dev
);
2065 /* Support for loadable net-drivers */
2066 extern struct net_device
*alloc_netdev_mq(int sizeof_priv
, const char *name
,
2067 void (*setup
)(struct net_device
*),
2068 unsigned int queue_count
);
2069 #define alloc_netdev(sizeof_priv, name, setup) \
2070 alloc_netdev_mq(sizeof_priv, name, setup, 1)
2071 extern int register_netdev(struct net_device
*dev
);
2072 extern void unregister_netdev(struct net_device
*dev
);
2074 /* General hardware address lists handling functions */
2075 extern int __hw_addr_add_multiple(struct netdev_hw_addr_list
*to_list
,
2076 struct netdev_hw_addr_list
*from_list
,
2077 int addr_len
, unsigned char addr_type
);
2078 extern void __hw_addr_del_multiple(struct netdev_hw_addr_list
*to_list
,
2079 struct netdev_hw_addr_list
*from_list
,
2080 int addr_len
, unsigned char addr_type
);
2081 extern int __hw_addr_sync(struct netdev_hw_addr_list
*to_list
,
2082 struct netdev_hw_addr_list
*from_list
,
2084 extern void __hw_addr_unsync(struct netdev_hw_addr_list
*to_list
,
2085 struct netdev_hw_addr_list
*from_list
,
2087 extern void __hw_addr_flush(struct netdev_hw_addr_list
*list
);
2088 extern void __hw_addr_init(struct netdev_hw_addr_list
*list
);
2090 /* Functions used for device addresses handling */
2091 extern int dev_addr_add(struct net_device
*dev
, unsigned char *addr
,
2092 unsigned char addr_type
);
2093 extern int dev_addr_del(struct net_device
*dev
, unsigned char *addr
,
2094 unsigned char addr_type
);
2095 extern int dev_addr_add_multiple(struct net_device
*to_dev
,
2096 struct net_device
*from_dev
,
2097 unsigned char addr_type
);
2098 extern int dev_addr_del_multiple(struct net_device
*to_dev
,
2099 struct net_device
*from_dev
,
2100 unsigned char addr_type
);
2101 extern void dev_addr_flush(struct net_device
*dev
);
2102 extern int dev_addr_init(struct net_device
*dev
);
2104 /* Functions used for unicast addresses handling */
2105 extern int dev_uc_add(struct net_device
*dev
, unsigned char *addr
);
2106 extern int dev_uc_del(struct net_device
*dev
, unsigned char *addr
);
2107 extern int dev_uc_sync(struct net_device
*to
, struct net_device
*from
);
2108 extern void dev_uc_unsync(struct net_device
*to
, struct net_device
*from
);
2109 extern void dev_uc_flush(struct net_device
*dev
);
2110 extern void dev_uc_init(struct net_device
*dev
);
2112 /* Functions used for multicast addresses handling */
2113 extern int dev_mc_add(struct net_device
*dev
, unsigned char *addr
);
2114 extern int dev_mc_add_global(struct net_device
*dev
, unsigned char *addr
);
2115 extern int dev_mc_del(struct net_device
*dev
, unsigned char *addr
);
2116 extern int dev_mc_del_global(struct net_device
*dev
, unsigned char *addr
);
2117 extern int dev_mc_sync(struct net_device
*to
, struct net_device
*from
);
2118 extern void dev_mc_unsync(struct net_device
*to
, struct net_device
*from
);
2119 extern void dev_mc_flush(struct net_device
*dev
);
2120 extern void dev_mc_init(struct net_device
*dev
);
2122 /* Functions used for secondary unicast and multicast support */
2123 extern void dev_set_rx_mode(struct net_device
*dev
);
2124 extern void __dev_set_rx_mode(struct net_device
*dev
);
2125 extern int dev_set_promiscuity(struct net_device
*dev
, int inc
);
2126 extern int dev_set_allmulti(struct net_device
*dev
, int inc
);
2127 extern void netdev_state_change(struct net_device
*dev
);
2128 extern int netdev_bonding_change(struct net_device
*dev
,
2129 unsigned long event
);
2130 extern void netdev_features_change(struct net_device
*dev
);
2131 /* Load a device via the kmod */
2132 extern void dev_load(struct net
*net
, const char *name
);
2133 extern void dev_mcast_init(void);
2134 extern struct rtnl_link_stats64
*dev_get_stats(struct net_device
*dev
,
2135 struct rtnl_link_stats64
*storage
);
2136 extern void dev_txq_stats_fold(const struct net_device
*dev
,
2137 struct rtnl_link_stats64
*stats
);
2139 extern int netdev_max_backlog
;
2140 extern int netdev_tstamp_prequeue
;
2141 extern int weight_p
;
2142 extern int netdev_set_master(struct net_device
*dev
, struct net_device
*master
);
2143 extern int skb_checksum_help(struct sk_buff
*skb
);
2144 extern struct sk_buff
*skb_gso_segment(struct sk_buff
*skb
, int features
);
2146 extern void netdev_rx_csum_fault(struct net_device
*dev
);
2148 static inline void netdev_rx_csum_fault(struct net_device
*dev
)
2152 /* rx skb timestamps */
2153 extern void net_enable_timestamp(void);
2154 extern void net_disable_timestamp(void);
2156 #ifdef CONFIG_PROC_FS
2157 extern void *dev_seq_start(struct seq_file
*seq
, loff_t
*pos
);
2158 extern void *dev_seq_next(struct seq_file
*seq
, void *v
, loff_t
*pos
);
2159 extern void dev_seq_stop(struct seq_file
*seq
, void *v
);
2162 extern int netdev_class_create_file(struct class_attribute
*class_attr
);
2163 extern void netdev_class_remove_file(struct class_attribute
*class_attr
);
2165 extern char *netdev_drivername(const struct net_device
*dev
, char *buffer
, int len
);
2167 extern void linkwatch_run_queue(void);
2169 unsigned long netdev_increment_features(unsigned long all
, unsigned long one
,
2170 unsigned long mask
);
2171 unsigned long netdev_fix_features(unsigned long features
, const char *name
);
2173 void netif_stacked_transfer_operstate(const struct net_device
*rootdev
,
2174 struct net_device
*dev
);
2176 static inline int net_gso_ok(int features
, int gso_type
)
2178 int feature
= gso_type
<< NETIF_F_GSO_SHIFT
;
2179 return (features
& feature
) == feature
;
2182 static inline int skb_gso_ok(struct sk_buff
*skb
, int features
)
2184 return net_gso_ok(features
, skb_shinfo(skb
)->gso_type
) &&
2185 (!skb_has_frags(skb
) || (features
& NETIF_F_FRAGLIST
));
2188 static inline int netif_needs_gso(struct net_device
*dev
, struct sk_buff
*skb
)
2190 return skb_is_gso(skb
) &&
2191 (!skb_gso_ok(skb
, dev
->features
) ||
2192 unlikely(skb
->ip_summed
!= CHECKSUM_PARTIAL
));
2195 static inline void netif_set_gso_max_size(struct net_device
*dev
,
2198 dev
->gso_max_size
= size
;
2201 extern int __skb_bond_should_drop(struct sk_buff
*skb
,
2202 struct net_device
*master
);
2204 static inline int skb_bond_should_drop(struct sk_buff
*skb
,
2205 struct net_device
*master
)
2208 return __skb_bond_should_drop(skb
, master
);
2212 extern struct pernet_operations __net_initdata loopback_net_ops
;
2214 static inline int dev_ethtool_get_settings(struct net_device
*dev
,
2215 struct ethtool_cmd
*cmd
)
2217 if (!dev
->ethtool_ops
|| !dev
->ethtool_ops
->get_settings
)
2219 return dev
->ethtool_ops
->get_settings(dev
, cmd
);
2222 static inline u32
dev_ethtool_get_rx_csum(struct net_device
*dev
)
2224 if (!dev
->ethtool_ops
|| !dev
->ethtool_ops
->get_rx_csum
)
2226 return dev
->ethtool_ops
->get_rx_csum(dev
);
2229 static inline u32
dev_ethtool_get_flags(struct net_device
*dev
)
2231 if (!dev
->ethtool_ops
|| !dev
->ethtool_ops
->get_flags
)
2233 return dev
->ethtool_ops
->get_flags(dev
);
2236 /* Logging, debugging and troubleshooting/diagnostic helpers. */
2238 /* netdev_printk helpers, similar to dev_printk */
2240 static inline const char *netdev_name(const struct net_device
*dev
)
2242 if (dev
->reg_state
!= NETREG_REGISTERED
)
2243 return "(unregistered net_device)";
2247 extern int netdev_printk(const char *level
, const struct net_device
*dev
,
2248 const char *format
, ...)
2249 __attribute__ ((format (printf
, 3, 4)));
2250 extern int netdev_emerg(const struct net_device
*dev
, const char *format
, ...)
2251 __attribute__ ((format (printf
, 2, 3)));
2252 extern int netdev_alert(const struct net_device
*dev
, const char *format
, ...)
2253 __attribute__ ((format (printf
, 2, 3)));
2254 extern int netdev_crit(const struct net_device
*dev
, const char *format
, ...)
2255 __attribute__ ((format (printf
, 2, 3)));
2256 extern int netdev_err(const struct net_device
*dev
, const char *format
, ...)
2257 __attribute__ ((format (printf
, 2, 3)));
2258 extern int netdev_warn(const struct net_device
*dev
, const char *format
, ...)
2259 __attribute__ ((format (printf
, 2, 3)));
2260 extern int netdev_notice(const struct net_device
*dev
, const char *format
, ...)
2261 __attribute__ ((format (printf
, 2, 3)));
2262 extern int netdev_info(const struct net_device
*dev
, const char *format
, ...)
2263 __attribute__ ((format (printf
, 2, 3)));
2266 #define netdev_dbg(__dev, format, args...) \
2267 netdev_printk(KERN_DEBUG, __dev, format, ##args)
2268 #elif defined(CONFIG_DYNAMIC_DEBUG)
2269 #define netdev_dbg(__dev, format, args...) \
2271 dynamic_dev_dbg((__dev)->dev.parent, "%s: " format, \
2272 netdev_name(__dev), ##args); \
2275 #define netdev_dbg(__dev, format, args...) \
2278 netdev_printk(KERN_DEBUG, __dev, format, ##args); \
2283 #if defined(VERBOSE_DEBUG)
2284 #define netdev_vdbg netdev_dbg
2287 #define netdev_vdbg(dev, format, args...) \
2290 netdev_printk(KERN_DEBUG, dev, format, ##args); \
2296 * netdev_WARN() acts like dev_printk(), but with the key difference
2297 * of using a WARN/WARN_ON to get the message out, including the
2298 * file/line information and a backtrace.
2300 #define netdev_WARN(dev, format, args...) \
2301 WARN(1, "netdevice: %s\n" format, netdev_name(dev), ##args);
2303 /* netif printk helpers, similar to netdev_printk */
2305 #define netif_printk(priv, type, level, dev, fmt, args...) \
2307 if (netif_msg_##type(priv)) \
2308 netdev_printk(level, (dev), fmt, ##args); \
2311 #define netif_level(level, priv, type, dev, fmt, args...) \
2313 if (netif_msg_##type(priv)) \
2314 netdev_##level(dev, fmt, ##args); \
2317 #define netif_emerg(priv, type, dev, fmt, args...) \
2318 netif_level(emerg, priv, type, dev, fmt, ##args)
2319 #define netif_alert(priv, type, dev, fmt, args...) \
2320 netif_level(alert, priv, type, dev, fmt, ##args)
2321 #define netif_crit(priv, type, dev, fmt, args...) \
2322 netif_level(crit, priv, type, dev, fmt, ##args)
2323 #define netif_err(priv, type, dev, fmt, args...) \
2324 netif_level(err, priv, type, dev, fmt, ##args)
2325 #define netif_warn(priv, type, dev, fmt, args...) \
2326 netif_level(warn, priv, type, dev, fmt, ##args)
2327 #define netif_notice(priv, type, dev, fmt, args...) \
2328 netif_level(notice, priv, type, dev, fmt, ##args)
2329 #define netif_info(priv, type, dev, fmt, args...) \
2330 netif_level(info, priv, type, dev, fmt, ##args)
2333 #define netif_dbg(priv, type, dev, format, args...) \
2334 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args)
2335 #elif defined(CONFIG_DYNAMIC_DEBUG)
2336 #define netif_dbg(priv, type, netdev, format, args...) \
2338 if (netif_msg_##type(priv)) \
2339 dynamic_dev_dbg((netdev)->dev.parent, \
2341 netdev_name(netdev), ##args); \
2344 #define netif_dbg(priv, type, dev, format, args...) \
2347 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
2352 #if defined(VERBOSE_DEBUG)
2353 #define netif_vdbg netif_dbg
2355 #define netif_vdbg(priv, type, dev, format, args...) \
2358 netif_printk(priv, type, KERN_DEBUG, dev, format, ##args); \
2363 #endif /* __KERNEL__ */
2365 #endif /* _LINUX_NETDEVICE_H */