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.Cox@linux.org>
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>
33 #include <linux/timer.h>
34 #include <linux/delay.h>
35 #include <asm/atomic.h>
36 #include <asm/cache.h>
37 #include <asm/byteorder.h>
39 #include <linux/device.h>
40 #include <linux/percpu.h>
41 #include <linux/dmaengine.h>
42 #include <linux/workqueue.h>
44 #include <net/net_namespace.h>
51 /* source back-compat hooks */
52 #define SET_ETHTOOL_OPS(netdev,ops) \
53 ( (netdev)->ethtool_ops = (ops) )
55 #define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev
56 functions are available. */
57 #define HAVE_FREE_NETDEV /* free_netdev() */
58 #define HAVE_NETDEV_PRIV /* netdev_priv() */
60 #define NET_XMIT_SUCCESS 0
61 #define NET_XMIT_DROP 1 /* skb dropped */
62 #define NET_XMIT_CN 2 /* congestion notification */
63 #define NET_XMIT_POLICED 3 /* skb is shot by police */
64 #define NET_XMIT_BYPASS 4 /* packet does not leave via dequeue;
65 (TC use only - dev_queue_xmit
66 returns this as NET_XMIT_SUCCESS) */
68 /* Backlog congestion levels */
69 #define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
70 #define NET_RX_DROP 1 /* packet dropped */
71 #define NET_RX_CN_LOW 2 /* storm alert, just in case */
72 #define NET_RX_CN_MOD 3 /* Storm on its way! */
73 #define NET_RX_CN_HIGH 4 /* The storm is here */
74 #define NET_RX_BAD 5 /* packet dropped due to kernel error */
76 /* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
77 * indicates that the device will soon be dropping packets, or already drops
78 * some packets of the same priority; prompting us to send less aggressively. */
79 #define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e))
80 #define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
84 #define MAX_ADDR_LEN 32 /* Largest hardware address length */
86 /* Driver transmit return codes */
87 #define NETDEV_TX_OK 0 /* driver took care of packet */
88 #define NETDEV_TX_BUSY 1 /* driver tx path was busy*/
89 #define NETDEV_TX_LOCKED -1 /* driver tx lock was already taken */
92 * Compute the worst case header length according to the protocols
96 #if !defined(CONFIG_AX25) && !defined(CONFIG_AX25_MODULE) && !defined(CONFIG_TR)
97 #define LL_MAX_HEADER 32
99 #if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
100 #define LL_MAX_HEADER 96
102 #define LL_MAX_HEADER 48
106 #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
107 !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \
108 !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
109 !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
110 #define MAX_HEADER LL_MAX_HEADER
112 #define MAX_HEADER (LL_MAX_HEADER + 48)
115 struct net_device_subqueue
117 /* Give a control state for each queue. This struct may contain
118 * per-queue locks in the future.
124 * Network device statistics. Akin to the 2.0 ether stats but
125 * with byte counters.
128 struct net_device_stats
130 unsigned long rx_packets; /* total packets received */
131 unsigned long tx_packets; /* total packets transmitted */
132 unsigned long rx_bytes; /* total bytes received */
133 unsigned long tx_bytes; /* total bytes transmitted */
134 unsigned long rx_errors; /* bad packets received */
135 unsigned long tx_errors; /* packet transmit problems */
136 unsigned long rx_dropped; /* no space in linux buffers */
137 unsigned long tx_dropped; /* no space available in linux */
138 unsigned long multicast; /* multicast packets received */
139 unsigned long collisions;
141 /* detailed rx_errors: */
142 unsigned long rx_length_errors;
143 unsigned long rx_over_errors; /* receiver ring buff overflow */
144 unsigned long rx_crc_errors; /* recved pkt with crc error */
145 unsigned long rx_frame_errors; /* recv'd frame alignment error */
146 unsigned long rx_fifo_errors; /* recv'r fifo overrun */
147 unsigned long rx_missed_errors; /* receiver missed packet */
149 /* detailed tx_errors */
150 unsigned long tx_aborted_errors;
151 unsigned long tx_carrier_errors;
152 unsigned long tx_fifo_errors;
153 unsigned long tx_heartbeat_errors;
154 unsigned long tx_window_errors;
157 unsigned long rx_compressed;
158 unsigned long tx_compressed;
162 /* Media selection options. */
175 #include <linux/cache.h>
176 #include <linux/skbuff.h>
182 struct netif_rx_stats
186 unsigned time_squeeze;
187 unsigned cpu_collision;
190 DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat);
194 struct dev_addr_list *next;
195 u8 da_addr[MAX_ADDR_LEN];
203 * We tag multicasts with these structures.
206 #define dev_mc_list dev_addr_list
207 #define dmi_addr da_addr
208 #define dmi_addrlen da_addrlen
209 #define dmi_users da_users
210 #define dmi_gusers da_gusers
214 struct hh_cache *hh_next; /* Next entry */
215 atomic_t hh_refcnt; /* number of users */
217 * We want hh_output, hh_len, hh_lock and hh_data be a in a separate
219 * They are mostly read, but hh_refcnt may be changed quite frequently,
220 * incurring cache line ping pongs.
222 __be16 hh_type ____cacheline_aligned_in_smp;
223 /* protocol identifier, f.e ETH_P_IP
224 * NOTE: For VLANs, this will be the
225 * encapuslated type. --BLG
227 u16 hh_len; /* length of header */
228 int (*hh_output)(struct sk_buff *skb);
231 /* cached hardware header; allow for machine alignment needs. */
232 #define HH_DATA_MOD 16
233 #define HH_DATA_OFF(__len) \
234 (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
235 #define HH_DATA_ALIGN(__len) \
236 (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
237 unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)];
240 /* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
242 * dev->hard_header_len ? (dev->hard_header_len +
243 * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
245 * We could use other alignment values, but we must maintain the
246 * relationship HH alignment <= LL alignment.
248 #define LL_RESERVED_SPACE(dev) \
249 (((dev)->hard_header_len&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
250 #define LL_RESERVED_SPACE_EXTRA(dev,extra) \
251 ((((dev)->hard_header_len+extra)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
254 int (*create) (struct sk_buff *skb, struct net_device *dev,
255 unsigned short type, const void *daddr,
256 const void *saddr, unsigned len);
257 int (*parse)(const struct sk_buff *skb, unsigned char *haddr);
258 int (*rebuild)(struct sk_buff *skb);
259 #define HAVE_HEADER_CACHE
260 int (*cache)(const struct neighbour *neigh, struct hh_cache *hh);
261 void (*cache_update)(struct hh_cache *hh,
262 const struct net_device *dev,
263 const unsigned char *haddr);
266 /* These flag bits are private to the generic network queueing
267 * layer, they may not be explicitly referenced by any other
275 __LINK_STATE_PRESENT,
277 __LINK_STATE_NOCARRIER,
278 __LINK_STATE_LINKWATCH_PENDING,
279 __LINK_STATE_DORMANT,
280 __LINK_STATE_QDISC_RUNNING,
285 * This structure holds at boot time configured netdevice settings. They
286 * are then used in the device probing.
288 struct netdev_boot_setup {
292 #define NETDEV_BOOT_SETUP_MAX 8
294 extern int __init netdev_boot_setup(char *str);
297 * Structure for NAPI scheduling similar to tasklet but with weighting
300 /* The poll_list must only be managed by the entity which
301 * changes the state of the NAPI_STATE_SCHED bit. This means
302 * whoever atomically sets that bit can add this napi_struct
303 * to the per-cpu poll_list, and whoever clears that bit
304 * can remove from the list right before clearing the bit.
306 struct list_head poll_list;
310 int (*poll)(struct napi_struct *, int);
311 #ifdef CONFIG_NETPOLL
312 spinlock_t poll_lock;
314 struct net_device *dev;
315 struct list_head dev_list;
321 NAPI_STATE_SCHED, /* Poll is scheduled */
322 NAPI_STATE_DISABLE, /* Disable pending */
325 extern void __napi_schedule(struct napi_struct *n);
327 static inline int napi_disable_pending(struct napi_struct *n)
329 return test_bit(NAPI_STATE_DISABLE, &n->state);
333 * napi_schedule_prep - check if napi can be scheduled
336 * Test if NAPI routine is already running, and if not mark
337 * it as running. This is used as a condition variable
338 * insure only one NAPI poll instance runs. We also make
339 * sure there is no pending NAPI disable.
341 static inline int napi_schedule_prep(struct napi_struct *n)
343 return !napi_disable_pending(n) &&
344 !test_and_set_bit(NAPI_STATE_SCHED, &n->state);
348 * napi_schedule - schedule NAPI poll
351 * Schedule NAPI poll routine to be called if it is not already
354 static inline void napi_schedule(struct napi_struct *n)
356 if (napi_schedule_prep(n))
360 /* Try to reschedule poll. Called by dev->poll() after napi_complete(). */
361 static inline int napi_reschedule(struct napi_struct *napi)
363 if (napi_schedule_prep(napi)) {
364 __napi_schedule(napi);
371 * napi_complete - NAPI processing complete
374 * Mark NAPI processing as complete.
376 static inline void __napi_complete(struct napi_struct *n)
378 BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));
379 list_del(&n->poll_list);
380 smp_mb__before_clear_bit();
381 clear_bit(NAPI_STATE_SCHED, &n->state);
384 static inline void napi_complete(struct napi_struct *n)
388 local_irq_save(flags);
390 local_irq_restore(flags);
394 * napi_disable - prevent NAPI from scheduling
397 * Stop NAPI from being scheduled on this context.
398 * Waits till any outstanding processing completes.
400 static inline void napi_disable(struct napi_struct *n)
402 set_bit(NAPI_STATE_DISABLE, &n->state);
403 while (test_and_set_bit(NAPI_STATE_SCHED, &n->state))
405 clear_bit(NAPI_STATE_DISABLE, &n->state);
409 * napi_enable - enable NAPI scheduling
412 * Resume NAPI from being scheduled on this context.
413 * Must be paired with napi_disable.
415 static inline void napi_enable(struct napi_struct *n)
417 BUG_ON(!test_bit(NAPI_STATE_SCHED, &n->state));
418 smp_mb__before_clear_bit();
419 clear_bit(NAPI_STATE_SCHED, &n->state);
424 * napi_synchronize - wait until NAPI is not running
427 * Wait until NAPI is done being scheduled on this context.
428 * Waits till any outstanding processing completes but
429 * does not disable future activations.
431 static inline void napi_synchronize(const struct napi_struct *n)
433 while (test_bit(NAPI_STATE_SCHED, &n->state))
437 # define napi_synchronize(n) barrier()
441 * The DEVICE structure.
442 * Actually, this whole structure is a big mistake. It mixes I/O
443 * data with strictly "high-level" data, and it has to know about
444 * almost every data structure used in the INET module.
446 * FIXME: cleanup struct net_device such that network protocol info
454 * This is the first field of the "visible" part of this structure
455 * (i.e. as seen by users in the "Space.c" file). It is the name
459 /* device name hash chain */
460 struct hlist_node name_hlist;
463 * I/O specific fields
464 * FIXME: Merge these and struct ifmap into one
466 unsigned long mem_end; /* shared mem end */
467 unsigned long mem_start; /* shared mem start */
468 unsigned long base_addr; /* device I/O address */
469 unsigned int irq; /* device IRQ number */
472 * Some hardware also needs these fields, but they are not
473 * part of the usual set specified in Space.c.
476 unsigned char if_port; /* Selectable AUI, TP,..*/
477 unsigned char dma; /* DMA channel */
481 struct list_head dev_list;
482 #ifdef CONFIG_NETPOLL
483 struct list_head napi_list;
486 /* The device initialization function. Called only once. */
487 int (*init)(struct net_device *dev);
489 /* ------- Fields preinitialized in Space.c finish here ------- */
491 /* Net device features */
492 unsigned long features;
493 #define NETIF_F_SG 1 /* Scatter/gather IO. */
494 #define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
495 #define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
496 #define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
497 #define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
498 #define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
499 #define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
500 #define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
501 #define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
502 #define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
503 #define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
504 #define NETIF_F_GSO 2048 /* Enable software GSO. */
505 #define NETIF_F_LLTX 4096 /* LockLess TX - deprecated. Please */
506 /* do not use LLTX in new drivers */
507 #define NETIF_F_NETNS_LOCAL 8192 /* Does not change network namespaces */
508 #define NETIF_F_MULTI_QUEUE 16384 /* Has multiple TX/RX queues */
509 #define NETIF_F_LRO 32768 /* large receive offload */
511 /* Segmentation offload features */
512 #define NETIF_F_GSO_SHIFT 16
513 #define NETIF_F_GSO_MASK 0xffff0000
514 #define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
515 #define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
516 #define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
517 #define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
518 #define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
520 /* List of features with software fallbacks. */
521 #define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
524 #define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
525 #define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
526 #define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
527 #define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
529 struct net_device *next_sched;
531 /* Interface index. Unique device identifier */
536 struct net_device_stats* (*get_stats)(struct net_device *dev);
537 struct net_device_stats stats;
539 #ifdef CONFIG_WIRELESS_EXT
540 /* List of functions to handle Wireless Extensions (instead of ioctl).
541 * See <net/iw_handler.h> for details. Jean II */
542 const struct iw_handler_def * wireless_handlers;
543 /* Instance data managed by the core of Wireless Extensions. */
544 struct iw_public_data * wireless_data;
546 const struct ethtool_ops *ethtool_ops;
548 /* Hardware header description */
549 const struct header_ops *header_ops;
552 * This marks the end of the "visible" part of the structure. All
553 * fields hereafter are internal to the system, and may change at
554 * will (read: may be cleaned up at will).
558 unsigned int flags; /* interface flags (a la BSD) */
559 unsigned short gflags;
560 unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */
561 unsigned short padded; /* How much padding added by alloc_netdev() */
563 unsigned char operstate; /* RFC2863 operstate */
564 unsigned char link_mode; /* mapping policy to operstate */
566 unsigned mtu; /* interface MTU value */
567 unsigned short type; /* interface hardware type */
568 unsigned short hard_header_len; /* hardware hdr length */
570 struct net_device *master; /* Pointer to master device of a group,
571 * which this device is member of.
574 /* Interface address info. */
575 unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */
576 unsigned char addr_len; /* hardware address length */
577 unsigned short dev_id; /* for shared network cards */
579 struct dev_addr_list *uc_list; /* Secondary unicast mac addresses */
580 int uc_count; /* Number of installed ucasts */
582 struct dev_addr_list *mc_list; /* Multicast mac addresses */
583 int mc_count; /* Number of installed mcasts */
588 /* Protocol specific pointers */
590 void *atalk_ptr; /* AppleTalk link */
591 void *ip_ptr; /* IPv4 specific data */
592 void *dn_ptr; /* DECnet specific data */
593 void *ip6_ptr; /* IPv6 specific data */
594 void *ec_ptr; /* Econet specific data */
595 void *ax25_ptr; /* AX.25 specific data */
596 struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data,
597 assign before registering */
600 * Cache line mostly used on receive path (including eth_type_trans())
602 unsigned long last_rx; /* Time of last Rx */
603 /* Interface address info used in eth_type_trans() */
604 unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast
605 because most packets are unicast) */
607 unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
609 /* ingress path synchronizer */
610 spinlock_t ingress_lock;
611 struct Qdisc *qdisc_ingress;
614 * Cache line mostly used on queue transmit path (qdisc)
616 /* device queue lock */
617 spinlock_t queue_lock ____cacheline_aligned_in_smp;
619 struct Qdisc *qdisc_sleeping;
620 struct list_head qdisc_list;
621 unsigned long tx_queue_len; /* Max frames per queue allowed */
623 /* Partially transmitted GSO packet. */
624 struct sk_buff *gso_skb;
627 * One part is mostly used on xmit path (device)
629 /* hard_start_xmit synchronizer */
630 spinlock_t _xmit_lock ____cacheline_aligned_in_smp;
631 /* cpu id of processor entered to hard_start_xmit or -1,
632 if nobody entered there.
635 void *priv; /* pointer to private data */
636 int (*hard_start_xmit) (struct sk_buff *skb,
637 struct net_device *dev);
638 /* These may be needed for future network-power-down code. */
639 unsigned long trans_start; /* Time (in jiffies) of last Tx */
641 int watchdog_timeo; /* used by dev_watchdog() */
642 struct timer_list watchdog_timer;
645 * refcnt is a very hot point, so align it on SMP
647 /* Number of references to this device */
648 atomic_t refcnt ____cacheline_aligned_in_smp;
650 /* delayed register/unregister */
651 struct list_head todo_list;
652 /* device index hash chain */
653 struct hlist_node index_hlist;
655 struct net_device *link_watch_next;
657 /* register/unregister state machine */
658 enum { NETREG_UNINITIALIZED=0,
659 NETREG_REGISTERED, /* completed register_netdevice */
660 NETREG_UNREGISTERING, /* called unregister_netdevice */
661 NETREG_UNREGISTERED, /* completed unregister todo */
662 NETREG_RELEASED, /* called free_netdev */
665 /* Called after device is detached from network. */
666 void (*uninit)(struct net_device *dev);
667 /* Called after last user reference disappears. */
668 void (*destructor)(struct net_device *dev);
670 /* Pointers to interface service routines. */
671 int (*open)(struct net_device *dev);
672 int (*stop)(struct net_device *dev);
673 #define HAVE_NETDEV_POLL
674 #define HAVE_CHANGE_RX_FLAGS
675 void (*change_rx_flags)(struct net_device *dev,
677 #define HAVE_SET_RX_MODE
678 void (*set_rx_mode)(struct net_device *dev);
679 #define HAVE_MULTICAST
680 void (*set_multicast_list)(struct net_device *dev);
681 #define HAVE_SET_MAC_ADDR
682 int (*set_mac_address)(struct net_device *dev,
684 #define HAVE_VALIDATE_ADDR
685 int (*validate_addr)(struct net_device *dev);
686 #define HAVE_PRIVATE_IOCTL
687 int (*do_ioctl)(struct net_device *dev,
688 struct ifreq *ifr, int cmd);
689 #define HAVE_SET_CONFIG
690 int (*set_config)(struct net_device *dev,
692 #define HAVE_CHANGE_MTU
693 int (*change_mtu)(struct net_device *dev, int new_mtu);
695 #define HAVE_TX_TIMEOUT
696 void (*tx_timeout) (struct net_device *dev);
698 void (*vlan_rx_register)(struct net_device *dev,
699 struct vlan_group *grp);
700 void (*vlan_rx_add_vid)(struct net_device *dev,
702 void (*vlan_rx_kill_vid)(struct net_device *dev,
705 int (*neigh_setup)(struct net_device *dev, struct neigh_parms *);
706 #ifdef CONFIG_NETPOLL
707 struct netpoll_info *npinfo;
709 #ifdef CONFIG_NET_POLL_CONTROLLER
710 void (*poll_controller)(struct net_device *dev);
714 /* Network namespace this network device is inside */
719 struct net_bridge_port *br_port;
721 struct macvlan_port *macvlan_port;
723 /* class/net/name entry */
725 /* space for optional statistics and wireless sysfs groups */
726 struct attribute_group *sysfs_groups[3];
728 /* rtnetlink link ops */
729 const struct rtnl_link_ops *rtnl_link_ops;
731 /* for setting kernel sock attribute on TCP connection setup */
732 #define GSO_MAX_SIZE 65536
733 unsigned int gso_max_size;
735 /* The TX queue control structures */
736 unsigned int egress_subqueue_count;
737 struct net_device_subqueue egress_subqueue[1];
739 #define to_net_dev(d) container_of(d, struct net_device, dev)
741 #define NETDEV_ALIGN 32
742 #define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1)
745 * Net namespace inlines
748 struct net *dev_net(const struct net_device *dev)
758 void dev_net_set(struct net_device *dev, struct net *net)
761 release_net(dev->nd_net);
762 dev->nd_net = hold_net(net);
767 * netdev_priv - access network device private data
768 * @dev: network device
770 * Get network device private data
772 static inline void *netdev_priv(const struct net_device *dev)
777 /* Set the sysfs physical device reference for the network logical device
778 * if set prior to registration will cause a symlink during initialization.
780 #define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
783 * netif_napi_add - initialize a napi context
784 * @dev: network device
785 * @napi: napi context
786 * @poll: polling function
787 * @weight: default weight
789 * netif_napi_add() must be used to initialize a napi context prior to calling
790 * *any* of the other napi related functions.
792 static inline void netif_napi_add(struct net_device *dev,
793 struct napi_struct *napi,
794 int (*poll)(struct napi_struct *, int),
797 INIT_LIST_HEAD(&napi->poll_list);
799 napi->weight = weight;
800 #ifdef CONFIG_NETPOLL
802 list_add(&napi->dev_list, &dev->napi_list);
803 spin_lock_init(&napi->poll_lock);
804 napi->poll_owner = -1;
806 set_bit(NAPI_STATE_SCHED, &napi->state);
810 __be16 type; /* This is really htons(ether_type). */
811 struct net_device *dev; /* NULL is wildcarded here */
812 int (*func) (struct sk_buff *,
814 struct packet_type *,
815 struct net_device *);
816 struct sk_buff *(*gso_segment)(struct sk_buff *skb,
818 int (*gso_send_check)(struct sk_buff *skb);
819 void *af_packet_priv;
820 struct list_head list;
823 #include <linux/interrupt.h>
824 #include <linux/notifier.h>
826 extern rwlock_t dev_base_lock; /* Device list lock */
829 #define for_each_netdev(net, d) \
830 list_for_each_entry(d, &(net)->dev_base_head, dev_list)
831 #define for_each_netdev_safe(net, d, n) \
832 list_for_each_entry_safe(d, n, &(net)->dev_base_head, dev_list)
833 #define for_each_netdev_continue(net, d) \
834 list_for_each_entry_continue(d, &(net)->dev_base_head, dev_list)
835 #define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
837 static inline struct net_device *next_net_device(struct net_device *dev)
839 struct list_head *lh;
843 lh = dev->dev_list.next;
844 return lh == &net->dev_base_head ? NULL : net_device_entry(lh);
847 static inline struct net_device *first_net_device(struct net *net)
849 return list_empty(&net->dev_base_head) ? NULL :
850 net_device_entry(net->dev_base_head.next);
853 extern int netdev_boot_setup_check(struct net_device *dev);
854 extern unsigned long netdev_boot_base(const char *prefix, int unit);
855 extern struct net_device *dev_getbyhwaddr(struct net *net, unsigned short type, char *hwaddr);
856 extern struct net_device *dev_getfirstbyhwtype(struct net *net, unsigned short type);
857 extern struct net_device *__dev_getfirstbyhwtype(struct net *net, unsigned short type);
858 extern void dev_add_pack(struct packet_type *pt);
859 extern void dev_remove_pack(struct packet_type *pt);
860 extern void __dev_remove_pack(struct packet_type *pt);
862 extern struct net_device *dev_get_by_flags(struct net *net, unsigned short flags,
863 unsigned short mask);
864 extern struct net_device *dev_get_by_name(struct net *net, const char *name);
865 extern struct net_device *__dev_get_by_name(struct net *net, const char *name);
866 extern int dev_alloc_name(struct net_device *dev, const char *name);
867 extern int dev_open(struct net_device *dev);
868 extern int dev_close(struct net_device *dev);
869 extern int dev_queue_xmit(struct sk_buff *skb);
870 extern int register_netdevice(struct net_device *dev);
871 extern void unregister_netdevice(struct net_device *dev);
872 extern void free_netdev(struct net_device *dev);
873 extern void synchronize_net(void);
874 extern int register_netdevice_notifier(struct notifier_block *nb);
875 extern int unregister_netdevice_notifier(struct notifier_block *nb);
876 extern int call_netdevice_notifiers(unsigned long val, struct net_device *dev);
877 extern struct net_device *dev_get_by_index(struct net *net, int ifindex);
878 extern struct net_device *__dev_get_by_index(struct net *net, int ifindex);
879 extern int dev_restart(struct net_device *dev);
880 #ifdef CONFIG_NETPOLL_TRAP
881 extern int netpoll_trap(void);
884 static inline int dev_hard_header(struct sk_buff *skb, struct net_device *dev,
886 const void *daddr, const void *saddr,
889 if (!dev->header_ops || !dev->header_ops->create)
892 return dev->header_ops->create(skb, dev, type, daddr, saddr, len);
895 static inline int dev_parse_header(const struct sk_buff *skb,
896 unsigned char *haddr)
898 const struct net_device *dev = skb->dev;
900 if (!dev->header_ops || !dev->header_ops->parse)
902 return dev->header_ops->parse(skb, haddr);
905 typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
906 extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf);
907 static inline int unregister_gifconf(unsigned int family)
909 return register_gifconf(family, NULL);
913 * Incoming packets are placed on per-cpu queues so that
914 * no locking is needed.
918 struct net_device *output_queue;
919 struct sk_buff_head input_pkt_queue;
920 struct list_head poll_list;
921 struct sk_buff *completion_queue;
923 struct napi_struct backlog;
924 #ifdef CONFIG_NET_DMA
925 struct dma_chan *net_dma;
929 DECLARE_PER_CPU(struct softnet_data,softnet_data);
931 #define HAVE_NETIF_QUEUE
933 extern void __netif_schedule(struct net_device *dev);
935 static inline void netif_schedule(struct net_device *dev)
937 if (!test_bit(__LINK_STATE_XOFF, &dev->state))
938 __netif_schedule(dev);
942 * netif_start_queue - allow transmit
943 * @dev: network device
945 * Allow upper layers to call the device hard_start_xmit routine.
947 static inline void netif_start_queue(struct net_device *dev)
949 clear_bit(__LINK_STATE_XOFF, &dev->state);
953 * netif_wake_queue - restart transmit
954 * @dev: network device
956 * Allow upper layers to call the device hard_start_xmit routine.
957 * Used for flow control when transmit resources are available.
959 static inline void netif_wake_queue(struct net_device *dev)
961 #ifdef CONFIG_NETPOLL_TRAP
962 if (netpoll_trap()) {
963 clear_bit(__LINK_STATE_XOFF, &dev->state);
967 if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state))
968 __netif_schedule(dev);
972 * netif_stop_queue - stop transmitted packets
973 * @dev: network device
975 * Stop upper layers calling the device hard_start_xmit routine.
976 * Used for flow control when transmit resources are unavailable.
978 static inline void netif_stop_queue(struct net_device *dev)
980 set_bit(__LINK_STATE_XOFF, &dev->state);
984 * netif_queue_stopped - test if transmit queue is flowblocked
985 * @dev: network device
987 * Test if transmit queue on device is currently unable to send.
989 static inline int netif_queue_stopped(const struct net_device *dev)
991 return test_bit(__LINK_STATE_XOFF, &dev->state);
995 * netif_running - test if up
996 * @dev: network device
998 * Test if the device has been brought up.
1000 static inline int netif_running(const struct net_device *dev)
1002 return test_bit(__LINK_STATE_START, &dev->state);
1006 * Routines to manage the subqueues on a device. We only need start
1007 * stop, and a check if it's stopped. All other device management is
1008 * done at the overall netdevice level.
1009 * Also test the device if we're multiqueue.
1013 * netif_start_subqueue - allow sending packets on subqueue
1014 * @dev: network device
1015 * @queue_index: sub queue index
1017 * Start individual transmit queue of a device with multiple transmit queues.
1019 static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
1021 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1022 clear_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
1027 * netif_stop_subqueue - stop sending packets on subqueue
1028 * @dev: network device
1029 * @queue_index: sub queue index
1031 * Stop individual transmit queue of a device with multiple transmit queues.
1033 static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
1035 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1036 #ifdef CONFIG_NETPOLL_TRAP
1040 set_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
1045 * netif_subqueue_stopped - test status of subqueue
1046 * @dev: network device
1047 * @queue_index: sub queue index
1049 * Check individual transmit queue of a device with multiple transmit queues.
1051 static inline int __netif_subqueue_stopped(const struct net_device *dev,
1054 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1055 return test_bit(__LINK_STATE_XOFF,
1056 &dev->egress_subqueue[queue_index].state);
1062 static inline int netif_subqueue_stopped(const struct net_device *dev,
1063 struct sk_buff *skb)
1065 return __netif_subqueue_stopped(dev, skb_get_queue_mapping(skb));
1069 * netif_wake_subqueue - allow sending packets on subqueue
1070 * @dev: network device
1071 * @queue_index: sub queue index
1073 * Resume individual transmit queue of a device with multiple transmit queues.
1075 static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
1077 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1078 #ifdef CONFIG_NETPOLL_TRAP
1082 if (test_and_clear_bit(__LINK_STATE_XOFF,
1083 &dev->egress_subqueue[queue_index].state))
1084 __netif_schedule(dev);
1089 * netif_is_multiqueue - test if device has multiple transmit queues
1090 * @dev: network device
1092 * Check if device has multiple transmit queues
1093 * Always falls if NETDEVICE_MULTIQUEUE is not configured
1095 static inline int netif_is_multiqueue(const struct net_device *dev)
1097 #ifdef CONFIG_NETDEVICES_MULTIQUEUE
1098 return (!!(NETIF_F_MULTI_QUEUE & dev->features));
1104 /* Use this variant when it is known for sure that it
1105 * is executing from hardware interrupt context or with hardware interrupts
1108 extern void dev_kfree_skb_irq(struct sk_buff *skb);
1110 /* Use this variant in places where it could be invoked
1111 * from either hardware interrupt or other context, with hardware interrupts
1112 * either disabled or enabled.
1114 extern void dev_kfree_skb_any(struct sk_buff *skb);
1116 #define HAVE_NETIF_RX 1
1117 extern int netif_rx(struct sk_buff *skb);
1118 extern int netif_rx_ni(struct sk_buff *skb);
1119 #define HAVE_NETIF_RECEIVE_SKB 1
1120 extern int netif_receive_skb(struct sk_buff *skb);
1121 extern int dev_valid_name(const char *name);
1122 extern int dev_ioctl(struct net *net, unsigned int cmd, void __user *);
1123 extern int dev_ethtool(struct net *net, struct ifreq *);
1124 extern unsigned dev_get_flags(const struct net_device *);
1125 extern int dev_change_flags(struct net_device *, unsigned);
1126 extern int dev_change_name(struct net_device *, char *);
1127 extern int dev_change_net_namespace(struct net_device *,
1128 struct net *, const char *);
1129 extern int dev_set_mtu(struct net_device *, int);
1130 extern int dev_set_mac_address(struct net_device *,
1132 extern int dev_hard_start_xmit(struct sk_buff *skb,
1133 struct net_device *dev);
1135 extern int netdev_budget;
1137 /* Called by rtnetlink.c:rtnl_unlock() */
1138 extern void netdev_run_todo(void);
1141 * dev_put - release reference to device
1142 * @dev: network device
1144 * Release reference to device to allow it to be freed.
1146 static inline void dev_put(struct net_device *dev)
1148 atomic_dec(&dev->refcnt);
1152 * dev_hold - get reference to device
1153 * @dev: network device
1155 * Hold reference to device to keep it from being freed.
1157 static inline void dev_hold(struct net_device *dev)
1159 atomic_inc(&dev->refcnt);
1162 /* Carrier loss detection, dial on demand. The functions netif_carrier_on
1163 * and _off may be called from IRQ context, but it is caller
1164 * who is responsible for serialization of these calls.
1166 * The name carrier is inappropriate, these functions should really be
1167 * called netif_lowerlayer_*() because they represent the state of any
1168 * kind of lower layer not just hardware media.
1171 extern void linkwatch_fire_event(struct net_device *dev);
1174 * netif_carrier_ok - test if carrier present
1175 * @dev: network device
1177 * Check if carrier is present on device
1179 static inline int netif_carrier_ok(const struct net_device *dev)
1181 return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
1184 extern void __netdev_watchdog_up(struct net_device *dev);
1186 extern void netif_carrier_on(struct net_device *dev);
1188 extern void netif_carrier_off(struct net_device *dev);
1191 * netif_dormant_on - mark device as dormant.
1192 * @dev: network device
1194 * Mark device as dormant (as per RFC2863).
1196 * The dormant state indicates that the relevant interface is not
1197 * actually in a condition to pass packets (i.e., it is not 'up') but is
1198 * in a "pending" state, waiting for some external event. For "on-
1199 * demand" interfaces, this new state identifies the situation where the
1200 * interface is waiting for events to place it in the up state.
1203 static inline void netif_dormant_on(struct net_device *dev)
1205 if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state))
1206 linkwatch_fire_event(dev);
1210 * netif_dormant_off - set device as not dormant.
1211 * @dev: network device
1213 * Device is not in dormant state.
1215 static inline void netif_dormant_off(struct net_device *dev)
1217 if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state))
1218 linkwatch_fire_event(dev);
1222 * netif_dormant - test if carrier present
1223 * @dev: network device
1225 * Check if carrier is present on device
1227 static inline int netif_dormant(const struct net_device *dev)
1229 return test_bit(__LINK_STATE_DORMANT, &dev->state);
1234 * netif_oper_up - test if device is operational
1235 * @dev: network device
1237 * Check if carrier is operational
1239 static inline int netif_oper_up(const struct net_device *dev) {
1240 return (dev->operstate == IF_OPER_UP ||
1241 dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
1245 * netif_device_present - is device available or removed
1246 * @dev: network device
1248 * Check if device has not been removed from system.
1250 static inline int netif_device_present(struct net_device *dev)
1252 return test_bit(__LINK_STATE_PRESENT, &dev->state);
1255 extern void netif_device_detach(struct net_device *dev);
1257 extern void netif_device_attach(struct net_device *dev);
1260 * Network interface message level settings
1262 #define HAVE_NETIF_MSG 1
1265 NETIF_MSG_DRV = 0x0001,
1266 NETIF_MSG_PROBE = 0x0002,
1267 NETIF_MSG_LINK = 0x0004,
1268 NETIF_MSG_TIMER = 0x0008,
1269 NETIF_MSG_IFDOWN = 0x0010,
1270 NETIF_MSG_IFUP = 0x0020,
1271 NETIF_MSG_RX_ERR = 0x0040,
1272 NETIF_MSG_TX_ERR = 0x0080,
1273 NETIF_MSG_TX_QUEUED = 0x0100,
1274 NETIF_MSG_INTR = 0x0200,
1275 NETIF_MSG_TX_DONE = 0x0400,
1276 NETIF_MSG_RX_STATUS = 0x0800,
1277 NETIF_MSG_PKTDATA = 0x1000,
1278 NETIF_MSG_HW = 0x2000,
1279 NETIF_MSG_WOL = 0x4000,
1282 #define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
1283 #define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
1284 #define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
1285 #define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
1286 #define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
1287 #define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
1288 #define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
1289 #define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
1290 #define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
1291 #define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
1292 #define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
1293 #define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
1294 #define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
1295 #define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
1296 #define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
1298 static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
1301 if (debug_value < 0 || debug_value >= (sizeof(u32) * 8))
1302 return default_msg_enable_bits;
1303 if (debug_value == 0) /* no output */
1305 /* set low N bits */
1306 return (1 << debug_value) - 1;
1309 /* Test if receive needs to be scheduled but only if up */
1310 static inline int netif_rx_schedule_prep(struct net_device *dev,
1311 struct napi_struct *napi)
1313 return napi_schedule_prep(napi);
1316 /* Add interface to tail of rx poll list. This assumes that _prep has
1317 * already been called and returned 1.
1319 static inline void __netif_rx_schedule(struct net_device *dev,
1320 struct napi_struct *napi)
1322 __napi_schedule(napi);
1325 /* Try to reschedule poll. Called by irq handler. */
1327 static inline void netif_rx_schedule(struct net_device *dev,
1328 struct napi_struct *napi)
1330 if (netif_rx_schedule_prep(dev, napi))
1331 __netif_rx_schedule(dev, napi);
1334 /* Try to reschedule poll. Called by dev->poll() after netif_rx_complete(). */
1335 static inline int netif_rx_reschedule(struct net_device *dev,
1336 struct napi_struct *napi)
1338 if (napi_schedule_prep(napi)) {
1339 __netif_rx_schedule(dev, napi);
1345 /* same as netif_rx_complete, except that local_irq_save(flags)
1346 * has already been issued
1348 static inline void __netif_rx_complete(struct net_device *dev,
1349 struct napi_struct *napi)
1351 __napi_complete(napi);
1354 /* Remove interface from poll list: it must be in the poll list
1355 * on current cpu. This primitive is called by dev->poll(), when
1356 * it completes the work. The device cannot be out of poll list at this
1357 * moment, it is BUG().
1359 static inline void netif_rx_complete(struct net_device *dev,
1360 struct napi_struct *napi)
1362 unsigned long flags;
1364 local_irq_save(flags);
1365 __netif_rx_complete(dev, napi);
1366 local_irq_restore(flags);
1370 * netif_tx_lock - grab network device transmit lock
1371 * @dev: network device
1372 * @cpu: cpu number of lock owner
1374 * Get network device transmit lock
1376 static inline void __netif_tx_lock(struct net_device *dev, int cpu)
1378 spin_lock(&dev->_xmit_lock);
1379 dev->xmit_lock_owner = cpu;
1382 static inline void netif_tx_lock(struct net_device *dev)
1384 __netif_tx_lock(dev, smp_processor_id());
1387 static inline void netif_tx_lock_bh(struct net_device *dev)
1389 spin_lock_bh(&dev->_xmit_lock);
1390 dev->xmit_lock_owner = smp_processor_id();
1393 static inline int netif_tx_trylock(struct net_device *dev)
1395 int ok = spin_trylock(&dev->_xmit_lock);
1397 dev->xmit_lock_owner = smp_processor_id();
1401 static inline void netif_tx_unlock(struct net_device *dev)
1403 dev->xmit_lock_owner = -1;
1404 spin_unlock(&dev->_xmit_lock);
1407 static inline void netif_tx_unlock_bh(struct net_device *dev)
1409 dev->xmit_lock_owner = -1;
1410 spin_unlock_bh(&dev->_xmit_lock);
1413 #define HARD_TX_LOCK(dev, cpu) { \
1414 if ((dev->features & NETIF_F_LLTX) == 0) { \
1415 __netif_tx_lock(dev, cpu); \
1419 #define HARD_TX_UNLOCK(dev) { \
1420 if ((dev->features & NETIF_F_LLTX) == 0) { \
1421 netif_tx_unlock(dev); \
1425 static inline void netif_tx_disable(struct net_device *dev)
1427 netif_tx_lock_bh(dev);
1428 netif_stop_queue(dev);
1429 netif_tx_unlock_bh(dev);
1432 /* These functions live elsewhere (drivers/net/net_init.c, but related) */
1434 extern void ether_setup(struct net_device *dev);
1436 /* Support for loadable net-drivers */
1437 extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
1438 void (*setup)(struct net_device *),
1439 unsigned int queue_count);
1440 #define alloc_netdev(sizeof_priv, name, setup) \
1441 alloc_netdev_mq(sizeof_priv, name, setup, 1)
1442 extern int register_netdev(struct net_device *dev);
1443 extern void unregister_netdev(struct net_device *dev);
1444 /* Functions used for secondary unicast and multicast support */
1445 extern void dev_set_rx_mode(struct net_device *dev);
1446 extern void __dev_set_rx_mode(struct net_device *dev);
1447 extern int dev_unicast_delete(struct net_device *dev, void *addr, int alen);
1448 extern int dev_unicast_add(struct net_device *dev, void *addr, int alen);
1449 extern int dev_unicast_sync(struct net_device *to, struct net_device *from);
1450 extern void dev_unicast_unsync(struct net_device *to, struct net_device *from);
1451 extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all);
1452 extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly);
1453 extern int dev_mc_sync(struct net_device *to, struct net_device *from);
1454 extern void dev_mc_unsync(struct net_device *to, struct net_device *from);
1455 extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all);
1456 extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly);
1457 extern int __dev_addr_sync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count);
1458 extern void __dev_addr_unsync(struct dev_addr_list **to, int *to_count, struct dev_addr_list **from, int *from_count);
1459 extern void dev_set_promiscuity(struct net_device *dev, int inc);
1460 extern void dev_set_allmulti(struct net_device *dev, int inc);
1461 extern void netdev_state_change(struct net_device *dev);
1462 extern void netdev_features_change(struct net_device *dev);
1463 /* Load a device via the kmod */
1464 extern void dev_load(struct net *net, const char *name);
1465 extern void dev_mcast_init(void);
1466 extern int netdev_max_backlog;
1467 extern int weight_p;
1468 extern int netdev_set_master(struct net_device *dev, struct net_device *master);
1469 extern int skb_checksum_help(struct sk_buff *skb);
1470 extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
1472 extern void netdev_rx_csum_fault(struct net_device *dev);
1474 static inline void netdev_rx_csum_fault(struct net_device *dev)
1478 /* rx skb timestamps */
1479 extern void net_enable_timestamp(void);
1480 extern void net_disable_timestamp(void);
1482 #ifdef CONFIG_PROC_FS
1483 extern void *dev_seq_start(struct seq_file *seq, loff_t *pos);
1484 extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
1485 extern void dev_seq_stop(struct seq_file *seq, void *v);
1488 extern void linkwatch_run_queue(void);
1490 extern int netdev_compute_features(unsigned long all, unsigned long one);
1492 static inline int net_gso_ok(int features, int gso_type)
1494 int feature = gso_type << NETIF_F_GSO_SHIFT;
1495 return (features & feature) == feature;
1498 static inline int skb_gso_ok(struct sk_buff *skb, int features)
1500 return net_gso_ok(features, skb_shinfo(skb)->gso_type);
1503 static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
1505 return skb_is_gso(skb) &&
1506 (!skb_gso_ok(skb, dev->features) ||
1507 unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
1510 static inline void netif_set_gso_max_size(struct net_device *dev,
1513 dev->gso_max_size = size;
1516 /* On bonding slaves other than the currently active slave, suppress
1517 * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and
1518 * ARP on active-backup slaves with arp_validate enabled.
1520 static inline int skb_bond_should_drop(struct sk_buff *skb)
1522 struct net_device *dev = skb->dev;
1523 struct net_device *master = dev->master;
1526 (dev->priv_flags & IFF_SLAVE_INACTIVE)) {
1527 if ((dev->priv_flags & IFF_SLAVE_NEEDARP) &&
1528 skb->protocol == __constant_htons(ETH_P_ARP))
1531 if (master->priv_flags & IFF_MASTER_ALB) {
1532 if (skb->pkt_type != PACKET_BROADCAST &&
1533 skb->pkt_type != PACKET_MULTICAST)
1536 if (master->priv_flags & IFF_MASTER_8023AD &&
1537 skb->protocol == __constant_htons(ETH_P_SLOW))
1545 #endif /* __KERNEL__ */
1547 #endif /* _LINUX_DEV_H */