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[WIRELESS] radiotap parser: accept all other fields
[net-next-2.6.git] / include / linux / netdevice.h
CommitLineData
1da177e4
LT		 1/*
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.
5 *
6 * Definitions for the Interfaces handler.
7 *
8 * Version: @(#)dev.h 1.0.10 08/12/93
9 *
02c30a84 10 * Authors: Ross Biro
1da177e4
LT		 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>
17 *
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.
22 *
23 * Moved to /usr/include/linux for NET3
24 */
25#ifndef _LINUX_NETDEVICE_H
26#define _LINUX_NETDEVICE_H
27
28#include <linux/if.h>
29#include <linux/if_ether.h>
30#include <linux/if_packet.h>
31
32#ifdef __KERNEL__
d7fe0f24 33#include <linux/timer.h>
1da177e4
LT		 34#include <asm/atomic.h>
35#include <asm/cache.h>
36#include <asm/byteorder.h>
37
1da177e4
LT		 38#include <linux/device.h>
39#include <linux/percpu.h>
db217334 40#include <linux/dmaengine.h>
1da177e4 41
1da177e4
LT		 42struct vlan_group;
43struct ethtool_ops;
115c1d6e 44struct netpoll_info;
704232c2
JB		 45/* 802.11 specific */
46struct wireless_dev;
1da177e4
LT		 47 /* source back-compat hooks */
48#define SET_ETHTOOL_OPS(netdev,ops) \
49 ( (netdev)->ethtool_ops = (ops) )
50
51#define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev
52 functions are available. */
53#define HAVE_FREE_NETDEV /* free_netdev() */
54#define HAVE_NETDEV_PRIV /* netdev_priv() */
55
56#define NET_XMIT_SUCCESS 0
57#define NET_XMIT_DROP 1 /* skb dropped */
58#define NET_XMIT_CN 2 /* congestion notification */
59#define NET_XMIT_POLICED 3 /* skb is shot by police */
60#define NET_XMIT_BYPASS 4 /* packet does not leave via dequeue;
61 (TC use only - dev_queue_xmit
62 returns this as NET_XMIT_SUCCESS) */
63
64/* Backlog congestion levels */
65#define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
66#define NET_RX_DROP 1 /* packet dropped */
67#define NET_RX_CN_LOW 2 /* storm alert, just in case */
68#define NET_RX_CN_MOD 3 /* Storm on its way! */
69#define NET_RX_CN_HIGH 4 /* The storm is here */
70#define NET_RX_BAD 5 /* packet dropped due to kernel error */
71
b9df3cb8
GR		 72/* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
73 * indicates that the device will soon be dropping packets, or already drops
74 * some packets of the same priority; prompting us to send less aggressively. */
75#define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e))
1da177e4
LT		 76#define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
77
78#endif
79
80#define MAX_ADDR_LEN 32 /* Largest hardware address length */
81
82/* Driver transmit return codes */
83#define NETDEV_TX_OK 0 /* driver took care of packet */
84#define NETDEV_TX_BUSY 1 /* driver tx path was busy*/
85#define NETDEV_TX_LOCKED -1 /* driver tx lock was already taken */
86
87/*
88 * Compute the worst case header length according to the protocols
89 * used.
90 */
91
92#if !defined(CONFIG_AX25) && !defined(CONFIG_AX25_MODULE) && !defined(CONFIG_TR)
93#define LL_MAX_HEADER 32
94#else
95#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
96#define LL_MAX_HEADER 96
97#else
98#define LL_MAX_HEADER 48
99#endif
100#endif
101
e81c7359
DM		 102#if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
103 !defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \
104 !defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
105 !defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
1da177e4
LT		 106#define MAX_HEADER LL_MAX_HEADER
107#else
108#define MAX_HEADER (LL_MAX_HEADER + 48)
109#endif
110
f25f4e44
PWJ		 111struct net_device_subqueue
112{
113 /* Give a control state for each queue. This struct may contain
114 * per-queue locks in the future.
115 */
116 unsigned long state;
117};
118
1da177e4
LT		 119/*
120 * Network device statistics. Akin to the 2.0 ether stats but
121 * with byte counters.
122 */
123
124struct net_device_stats
125{
126 unsigned long rx_packets; /* total packets received */
127 unsigned long tx_packets; /* total packets transmitted */
128 unsigned long rx_bytes; /* total bytes received */
129 unsigned long tx_bytes; /* total bytes transmitted */
130 unsigned long rx_errors; /* bad packets received */
131 unsigned long tx_errors; /* packet transmit problems */
132 unsigned long rx_dropped; /* no space in linux buffers */
133 unsigned long tx_dropped; /* no space available in linux */
134 unsigned long multicast; /* multicast packets received */
135 unsigned long collisions;
136
137 /* detailed rx_errors: */
138 unsigned long rx_length_errors;
139 unsigned long rx_over_errors; /* receiver ring buff overflow */
140 unsigned long rx_crc_errors; /* recved pkt with crc error */
141 unsigned long rx_frame_errors; /* recv'd frame alignment error */
142 unsigned long rx_fifo_errors; /* recv'r fifo overrun */
143 unsigned long rx_missed_errors; /* receiver missed packet */
144
145 /* detailed tx_errors */
146 unsigned long tx_aborted_errors;
147 unsigned long tx_carrier_errors;
148 unsigned long tx_fifo_errors;
149 unsigned long tx_heartbeat_errors;
150 unsigned long tx_window_errors;
151
152 /* for cslip etc */
153 unsigned long rx_compressed;
154 unsigned long tx_compressed;
155};
156
157
158/* Media selection options. */
159enum {
160 IF_PORT_UNKNOWN = 0,
161 IF_PORT_10BASE2,
162 IF_PORT_10BASET,
163 IF_PORT_AUI,
164 IF_PORT_100BASET,
165 IF_PORT_100BASETX,
166 IF_PORT_100BASEFX
167};
168
169#ifdef __KERNEL__
170
171#include <linux/cache.h>
172#include <linux/skbuff.h>
173
174struct neighbour;
175struct neigh_parms;
176struct sk_buff;
177
178struct netif_rx_stats
179{
180 unsigned total;
181 unsigned dropped;
182 unsigned time_squeeze;
1da177e4
LT		 183 unsigned cpu_collision;
184};
185
186DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat);
187
bf742482
PM		 188struct dev_addr_list
189{
190 struct dev_addr_list *next;
191 u8 da_addr[MAX_ADDR_LEN];
192 u8 da_addrlen;
a0a400d7 193 u8 da_synced;
bf742482
PM		 194 int da_users;
195 int da_gusers;
196};
1da177e4
LT		 197
198/*
199 * We tag multicasts with these structures.
200 */
3fba5a8b
PM		 201
202#define dev_mc_list dev_addr_list
203#define dmi_addr da_addr
204#define dmi_addrlen da_addrlen
205#define dmi_users da_users
206#define dmi_gusers da_gusers
1da177e4
LT		 207
208struct hh_cache
209{
210 struct hh_cache *hh_next; /* Next entry */
211 atomic_t hh_refcnt; /* number of users */
f0490980
ED		 212/*
213 * We want hh_output, hh_len, hh_lock and hh_data be a in a separate
214 * cache line on SMP.
215 * They are mostly read, but hh_refcnt may be changed quite frequently,
216 * incurring cache line ping pongs.
217 */
218 __be16 hh_type ____cacheline_aligned_in_smp;
219 /* protocol identifier, f.e ETH_P_IP
1da177e4
LT		 220 * NOTE: For VLANs, this will be the
221 * encapuslated type. --BLG
222 */
d5c42c0e 223 u16 hh_len; /* length of header */
1da177e4 224 int (*hh_output)(struct sk_buff *skb);
3644f0ce 225 seqlock_t hh_lock;
1da177e4
LT		 226
227 /* cached hardware header; allow for machine alignment needs. */
228#define HH_DATA_MOD 16
229#define HH_DATA_OFF(__len) \
5ba0eac6 230 (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
1da177e4
LT		 231#define HH_DATA_ALIGN(__len) \
232 (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
233 unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)];
234};
235
236/* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
237 * Alternative is:
238 * dev->hard_header_len ? (dev->hard_header_len +
239 * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
240 *
241 * We could use other alignment values, but we must maintain the
242 * relationship HH alignment <= LL alignment.
243 */
244#define LL_RESERVED_SPACE(dev) \
245 (((dev)->hard_header_len&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
246#define LL_RESERVED_SPACE_EXTRA(dev,extra) \
247 ((((dev)->hard_header_len+extra)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
248
249/* These flag bits are private to the generic network queueing
250 * layer, they may not be explicitly referenced by any other
251 * code.
252 */
253
254enum netdev_state_t
255{
256 __LINK_STATE_XOFF=0,
257 __LINK_STATE_START,
258 __LINK_STATE_PRESENT,
259 __LINK_STATE_SCHED,
260 __LINK_STATE_NOCARRIER,
261 __LINK_STATE_RX_SCHED,
b00055aa
SR		 262 __LINK_STATE_LINKWATCH_PENDING,
263 __LINK_STATE_DORMANT,
48d83325 264 __LINK_STATE_QDISC_RUNNING,
1da177e4
LT		 265};
266
267
268/*
269 * This structure holds at boot time configured netdevice settings. They
270 * are then used in the device probing.
271 */
272struct netdev_boot_setup {
273 char name[IFNAMSIZ];
274 struct ifmap map;
275};
276#define NETDEV_BOOT_SETUP_MAX 8
277
20380731 278extern int __init netdev_boot_setup(char *str);
1da177e4
LT		 279
280/*
281 * The DEVICE structure.
282 * Actually, this whole structure is a big mistake. It mixes I/O
283 * data with strictly "high-level" data, and it has to know about
284 * almost every data structure used in the INET module.
285 *
286 * FIXME: cleanup struct net_device such that network protocol info
287 * moves out.
288 */
289
290struct net_device
291{
292
293 /*
294 * This is the first field of the "visible" part of this structure
295 * (i.e. as seen by users in the "Space.c" file). It is the name
296 * the interface.
297 */
298 char name[IFNAMSIZ];
9356b8fc
ED		 299 /* device name hash chain */
300 struct hlist_node name_hlist;
1da177e4
LT		 301
302 /*
303 * I/O specific fields
304 * FIXME: Merge these and struct ifmap into one
305 */
306 unsigned long mem_end; /* shared mem end */
307 unsigned long mem_start; /* shared mem start */
308 unsigned long base_addr; /* device I/O address */
309 unsigned int irq; /* device IRQ number */
310
311 /*
312 * Some hardware also needs these fields, but they are not
313 * part of the usual set specified in Space.c.
314 */
315
316 unsigned char if_port; /* Selectable AUI, TP,..*/
317 unsigned char dma; /* DMA channel */
318
319 unsigned long state;
320
7562f876 321 struct list_head dev_list;
1da177e4
LT		 322
323 /* The device initialization function. Called only once. */
324 int (*init)(struct net_device *dev);
325
326 /* ------- Fields preinitialized in Space.c finish here ------- */
327
9356b8fc
ED		 328 /* Net device features */
329 unsigned long features;
330#define NETIF_F_SG 1 /* Scatter/gather IO. */
d212f87b 331#define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
9356b8fc
ED		 332#define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
333#define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
d212f87b 334#define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
9356b8fc
ED		 335#define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
336#define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
337#define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
338#define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
339#define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
340#define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
37c3185a 341#define NETIF_F_GSO 2048 /* Enable software GSO. */
9356b8fc 342#define NETIF_F_LLTX 4096 /* LockLess TX */
f25f4e44 343#define NETIF_F_MULTI_QUEUE 16384 /* Has multiple TX/RX queues */
7967168c
HX		 344
345 /* Segmentation offload features */
346#define NETIF_F_GSO_SHIFT 16
bcd76111 347#define NETIF_F_GSO_MASK 0xffff0000
7967168c 348#define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
f83ef8c0 349#define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
576a30eb 350#define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
f83ef8c0
HX		 351#define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
352#define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
9356b8fc 353
78eb8877
HX		 354 /* List of features with software fallbacks. */
355#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
356
d212f87b 357
8648b305 358#define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
d212f87b
SH		 359#define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
360#define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
361#define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
8648b305 362
1da177e4
LT		 363 struct net_device *next_sched;
364
365 /* Interface index. Unique device identifier */
366 int ifindex;
367 int iflink;
368
369
370 struct net_device_stats* (*get_stats)(struct net_device *dev);
c45d286e 371 struct net_device_stats stats;
1da177e4 372
b86e0280 373#ifdef CONFIG_WIRELESS_EXT
1da177e4
LT		 374 /* List of functions to handle Wireless Extensions (instead of ioctl).
375 * See <net/iw_handler.h> for details. Jean II */
376 const struct iw_handler_def * wireless_handlers;
377 /* Instance data managed by the core of Wireless Extensions. */
378 struct iw_public_data * wireless_data;
b86e0280 379#endif
76fd8593 380 const struct ethtool_ops *ethtool_ops;
1da177e4
LT		 381
382 /*
383 * This marks the end of the "visible" part of the structure. All
384 * fields hereafter are internal to the system, and may change at
385 * will (read: may be cleaned up at will).
386 */
387
1da177e4 388
b00055aa 389 unsigned int flags; /* interface flags (a la BSD) */
1da177e4
LT		 390 unsigned short gflags;
391 unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */
392 unsigned short padded; /* How much padding added by alloc_netdev() */
393
b00055aa
SR		 394 unsigned char operstate; /* RFC2863 operstate */
395 unsigned char link_mode; /* mapping policy to operstate */
396
1da177e4
LT		 397 unsigned mtu; /* interface MTU value */
398 unsigned short type; /* interface hardware type */
399 unsigned short hard_header_len; /* hardware hdr length */
1da177e4
LT		 400
401 struct net_device *master; /* Pointer to master device of a group,
402 * which this device is member of.
403 */
404
405 /* Interface address info. */
a6f9a705 406 unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */
1da177e4
LT		 407 unsigned char addr_len; /* hardware address length */
408 unsigned short dev_id; /* for shared network cards */
409
4417da66
PM		 410 struct dev_addr_list *uc_list; /* Secondary unicast mac addresses */
411 int uc_count; /* Number of installed ucasts */
412 int uc_promisc;
3fba5a8b 413 struct dev_addr_list *mc_list; /* Multicast mac addresses */
1da177e4
LT		 414 int mc_count; /* Number of installed mcasts */
415 int promiscuity;
416 int allmulti;
417
1da177e4
LT		 418
419 /* Protocol specific pointers */
420
421 void *atalk_ptr; /* AppleTalk link */
422 void *ip_ptr; /* IPv4 specific data */
423 void *dn_ptr; /* DECnet specific data */
424 void *ip6_ptr; /* IPv6 specific data */
425 void *ec_ptr; /* Econet specific data */
426 void *ax25_ptr; /* AX.25 specific data */
704232c2
JB		 427 struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data,
428 assign before registering */
1da177e4 429
9356b8fc
ED		 430/*
431 * Cache line mostly used on receive path (including eth_type_trans())
432 */
433 struct list_head poll_list ____cacheline_aligned_in_smp;
434 /* Link to poll list */
435
436 int (*poll) (struct net_device *dev, int *quota);
1da177e4
LT		 437 int quota;
438 int weight;
9356b8fc
ED		 439 unsigned long last_rx; /* Time of last Rx */
440 /* Interface address info used in eth_type_trans() */
441 unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast
442 because most packets are unicast) */
443
444 unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
1da177e4 445
9356b8fc
ED		 446/*
447 * Cache line mostly used on queue transmit path (qdisc)
448 */
449 /* device queue lock */
450 spinlock_t queue_lock ____cacheline_aligned_in_smp;
1da177e4
LT		 451 struct Qdisc *qdisc;
452 struct Qdisc *qdisc_sleeping;
1da177e4
LT		 453 struct list_head qdisc_list;
454 unsigned long tx_queue_len; /* Max frames per queue allowed */
455
f6a78bfc
HX		 456 /* Partially transmitted GSO packet. */
457 struct sk_buff *gso_skb;
458
1da177e4
LT		 459 /* ingress path synchronizer */
460 spinlock_t ingress_lock;
9356b8fc
ED		 461 struct Qdisc *qdisc_ingress;
462
463/*
464 * One part is mostly used on xmit path (device)
465 */
1da177e4 466 /* hard_start_xmit synchronizer */
932ff279 467 spinlock_t _xmit_lock ____cacheline_aligned_in_smp;
1da177e4
LT		 468 /* cpu id of processor entered to hard_start_xmit or -1,
469 if nobody entered there.
470 */
471 int xmit_lock_owner;
9356b8fc
ED		 472 void *priv; /* pointer to private data */
473 int (*hard_start_xmit) (struct sk_buff *skb,
474 struct net_device *dev);
475 /* These may be needed for future network-power-down code. */
476 unsigned long trans_start; /* Time (in jiffies) of last Tx */
477
478 int watchdog_timeo; /* used by dev_watchdog() */
479 struct timer_list watchdog_timer;
480
481/*
482 * refcnt is a very hot point, so align it on SMP
483 */
1da177e4 484 /* Number of references to this device */
9356b8fc
ED		 485 atomic_t refcnt ____cacheline_aligned_in_smp;
486
1da177e4
LT		 487 /* delayed register/unregister */
488 struct list_head todo_list;
1da177e4
LT		 489 /* device index hash chain */
490 struct hlist_node index_hlist;
491
572a103d
HX		 492 struct net_device *link_watch_next;
493
1da177e4
LT		 494 /* register/unregister state machine */
495 enum { NETREG_UNINITIALIZED=0,
b17a7c17 496 NETREG_REGISTERED, /* completed register_netdevice */
1da177e4
LT		 497 NETREG_UNREGISTERING, /* called unregister_netdevice */
498 NETREG_UNREGISTERED, /* completed unregister todo */
499 NETREG_RELEASED, /* called free_netdev */
500 } reg_state;
501
1da177e4
LT		 502 /* Called after device is detached from network. */
503 void (*uninit)(struct net_device *dev);
504 /* Called after last user reference disappears. */
505 void (*destructor)(struct net_device *dev);
506
507 /* Pointers to interface service routines. */
508 int (*open)(struct net_device *dev);
509 int (*stop)(struct net_device *dev);
1da177e4 510#define HAVE_NETDEV_POLL
1da177e4
LT		 511 int (*hard_header) (struct sk_buff *skb,
512 struct net_device *dev,
513 unsigned short type,
514 void *daddr,
515 void *saddr,
516 unsigned len);
517 int (*rebuild_header)(struct sk_buff *skb);
24023451
PM		 518#define HAVE_CHANGE_RX_FLAGS
519 void (*change_rx_flags)(struct net_device *dev,
520 int flags);
4417da66
PM		 521#define HAVE_SET_RX_MODE
522 void (*set_rx_mode)(struct net_device *dev);
1da177e4
LT		 523#define HAVE_MULTICAST
524 void (*set_multicast_list)(struct net_device *dev);
525#define HAVE_SET_MAC_ADDR
526 int (*set_mac_address)(struct net_device *dev,
527 void *addr);
528#define HAVE_PRIVATE_IOCTL
529 int (*do_ioctl)(struct net_device *dev,
530 struct ifreq *ifr, int cmd);
531#define HAVE_SET_CONFIG
532 int (*set_config)(struct net_device *dev,
533 struct ifmap *map);
534#define HAVE_HEADER_CACHE
535 int (*hard_header_cache)(struct neighbour *neigh,
536 struct hh_cache *hh);
537 void (*header_cache_update)(struct hh_cache *hh,
538 struct net_device *dev,
539 unsigned char * haddr);
540#define HAVE_CHANGE_MTU
541 int (*change_mtu)(struct net_device *dev, int new_mtu);
542
543#define HAVE_TX_TIMEOUT
544 void (*tx_timeout) (struct net_device *dev);
545
546 void (*vlan_rx_register)(struct net_device *dev,
547 struct vlan_group *grp);
548 void (*vlan_rx_add_vid)(struct net_device *dev,
549 unsigned short vid);
550 void (*vlan_rx_kill_vid)(struct net_device *dev,
551 unsigned short vid);
552
553 int (*hard_header_parse)(struct sk_buff *skb,
554 unsigned char *haddr);
555 int (*neigh_setup)(struct net_device *dev, struct neigh_parms *);
556#ifdef CONFIG_NETPOLL
115c1d6e 557 struct netpoll_info *npinfo;
1da177e4
LT		 558#endif
559#ifdef CONFIG_NET_POLL_CONTROLLER
560 void (*poll_controller)(struct net_device *dev);
561#endif
562
563 /* bridge stuff */
564 struct net_bridge_port *br_port;
b863ceb7
PM		 565 /* macvlan */
566 struct macvlan_port *macvlan_port;
1da177e4 567
1da177e4 568 /* class/net/name entry */
43cb76d9 569 struct device dev;
fe9925b5
SH		 570 /* space for optional statistics and wireless sysfs groups */
571 struct attribute_group *sysfs_groups[3];
38f7b870
PM		 572
573 /* rtnetlink link ops */
574 const struct rtnl_link_ops *rtnl_link_ops;
f25f4e44
PWJ		 575
576 /* The TX queue control structures */
577 unsigned int egress_subqueue_count;
31ce72a6 578 struct net_device_subqueue egress_subqueue[1];
1da177e4 579};
43cb76d9 580#define to_net_dev(d) container_of(d, struct net_device, dev)
1da177e4
LT		 581
582#define NETDEV_ALIGN 32
583#define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1)
584
6472ce60 585static inline void *netdev_priv(const struct net_device *dev)
1da177e4 586{
f25f4e44 587 return dev->priv;
1da177e4
LT		 588}
589
590#define SET_MODULE_OWNER(dev) do { } while (0)
591/* Set the sysfs physical device reference for the network logical device
592 * if set prior to registration will cause a symlink during initialization.
593 */
43cb76d9 594#define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
1da177e4
LT		 595
596struct packet_type {
f2ccd8fa
DM		 597 __be16 type; /* This is really htons(ether_type). */
598 struct net_device *dev; /* NULL is wildcarded here */
599 int (*func) (struct sk_buff *,
600 struct net_device *,
601 struct packet_type *,
602 struct net_device *);
576a30eb
HX		 603 struct sk_buff *(*gso_segment)(struct sk_buff *skb,
604 int features);
a430a43d 605 int (*gso_send_check)(struct sk_buff *skb);
1da177e4
LT		 606 void *af_packet_priv;
607 struct list_head list;
608};
609
610#include <linux/interrupt.h>
611#include <linux/notifier.h>
612
613extern struct net_device loopback_dev; /* The loopback */
7562f876 614extern struct list_head dev_base_head; /* All devices */
1da177e4
LT		 615extern rwlock_t dev_base_lock; /* Device list lock */
616
7562f876
PE		 617#define for_each_netdev(d) \
618 list_for_each_entry(d, &dev_base_head, dev_list)
619#define for_each_netdev_safe(d, n) \
620 list_for_each_entry_safe(d, n, &dev_base_head, dev_list)
621#define for_each_netdev_continue(d) \
622 list_for_each_entry_continue(d, &dev_base_head, dev_list)
623#define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
624
625static inline struct net_device *next_net_device(struct net_device *dev)
626{
627 struct list_head *lh;
628
629 lh = dev->dev_list.next;
630 return lh == &dev_base_head ? NULL : net_device_entry(lh);
631}
632
633static inline struct net_device *first_net_device(void)
634{
635 return list_empty(&dev_base_head) ? NULL :
636 net_device_entry(dev_base_head.next);
637}
638
1da177e4
LT		 639extern int netdev_boot_setup_check(struct net_device *dev);
640extern unsigned long netdev_boot_base(const char *prefix, int unit);
641extern struct net_device *dev_getbyhwaddr(unsigned short type, char *hwaddr);
642extern struct net_device *dev_getfirstbyhwtype(unsigned short type);
4e9cac2b 643extern struct net_device *__dev_getfirstbyhwtype(unsigned short type);
1da177e4
LT		 644extern void dev_add_pack(struct packet_type *pt);
645extern void dev_remove_pack(struct packet_type *pt);
646extern void __dev_remove_pack(struct packet_type *pt);
647
648extern struct net_device *dev_get_by_flags(unsigned short flags,
649 unsigned short mask);
650extern struct net_device *dev_get_by_name(const char *name);
651extern struct net_device *__dev_get_by_name(const char *name);
652extern int dev_alloc_name(struct net_device *dev, const char *name);
653extern int dev_open(struct net_device *dev);
654extern int dev_close(struct net_device *dev);
655extern int dev_queue_xmit(struct sk_buff *skb);
656extern int register_netdevice(struct net_device *dev);
22f8cde5 657extern void unregister_netdevice(struct net_device *dev);
1da177e4
LT		 658extern void free_netdev(struct net_device *dev);
659extern void synchronize_net(void);
660extern int register_netdevice_notifier(struct notifier_block *nb);
661extern int unregister_netdevice_notifier(struct notifier_block *nb);
662extern int call_netdevice_notifiers(unsigned long val, void *v);
663extern struct net_device *dev_get_by_index(int ifindex);
664extern struct net_device *__dev_get_by_index(int ifindex);
665extern int dev_restart(struct net_device *dev);
666#ifdef CONFIG_NETPOLL_TRAP
667extern int netpoll_trap(void);
668#endif
669
670typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
671extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf);
672static inline int unregister_gifconf(unsigned int family)
673{
674 return register_gifconf(family, NULL);
675}
676
677/*
678 * Incoming packets are placed on per-cpu queues so that
679 * no locking is needed.
680 */
681
682struct softnet_data
683{
31aa02c5 684 struct net_device *output_queue;
1da177e4
LT		 685 struct sk_buff_head input_pkt_queue;
686 struct list_head poll_list;
1da177e4
LT		 687 struct sk_buff *completion_queue;
688
689 struct net_device backlog_dev; /* Sorry. 8) */
db217334
CL		 690#ifdef CONFIG_NET_DMA
691 struct dma_chan *net_dma;
692#endif
1da177e4
LT		 693};
694
695DECLARE_PER_CPU(struct softnet_data,softnet_data);
696
697#define HAVE_NETIF_QUEUE
698
56079431 699extern void __netif_schedule(struct net_device *dev);
1da177e4
LT		 700
701static inline void netif_schedule(struct net_device *dev)
702{
703 if (!test_bit(__LINK_STATE_XOFF, &dev->state))
704 __netif_schedule(dev);
705}
706
707static inline void netif_start_queue(struct net_device *dev)
708{
709 clear_bit(__LINK_STATE_XOFF, &dev->state);
710}
711
712static inline void netif_wake_queue(struct net_device *dev)
713{
714#ifdef CONFIG_NETPOLL_TRAP
5f286e11
SS		 715 if (netpoll_trap()) {
716 clear_bit(__LINK_STATE_XOFF, &dev->state);
1da177e4 717 return;
5f286e11 718 }
1da177e4
LT		 719#endif
720 if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state))
721 __netif_schedule(dev);
722}
723
724static inline void netif_stop_queue(struct net_device *dev)
725{
1da177e4
LT		 726 set_bit(__LINK_STATE_XOFF, &dev->state);
727}
728
729static inline int netif_queue_stopped(const struct net_device *dev)
730{
731 return test_bit(__LINK_STATE_XOFF, &dev->state);
732}
733
734static inline int netif_running(const struct net_device *dev)
735{
736 return test_bit(__LINK_STATE_START, &dev->state);
737}
738
f25f4e44
PWJ		 739/*
740 * Routines to manage the subqueues on a device. We only need start
741 * stop, and a check if it's stopped. All other device management is
742 * done at the overall netdevice level.
743 * Also test the device if we're multiqueue.
744 */
745static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
746{
747#ifdef CONFIG_NETDEVICES_MULTIQUEUE
748 clear_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
749#endif
750}
751
752static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
753{
754#ifdef CONFIG_NETDEVICES_MULTIQUEUE
755#ifdef CONFIG_NETPOLL_TRAP
756 if (netpoll_trap())
757 return;
758#endif
759 set_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
760#endif
761}
762
763static inline int netif_subqueue_stopped(const struct net_device *dev,
764 u16 queue_index)
765{
766#ifdef CONFIG_NETDEVICES_MULTIQUEUE
767 return test_bit(__LINK_STATE_XOFF,
768 &dev->egress_subqueue[queue_index].state);
769#else
770 return 0;
771#endif
772}
773
774static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
775{
776#ifdef CONFIG_NETDEVICES_MULTIQUEUE
777#ifdef CONFIG_NETPOLL_TRAP
778 if (netpoll_trap())
779 return;
780#endif
781 if (test_and_clear_bit(__LINK_STATE_XOFF,
782 &dev->egress_subqueue[queue_index].state))
783 __netif_schedule(dev);
784#endif
785}
786
787static inline int netif_is_multiqueue(const struct net_device *dev)
788{
789#ifdef CONFIG_NETDEVICES_MULTIQUEUE
790 return (!!(NETIF_F_MULTI_QUEUE & dev->features));
791#else
792 return 0;
793#endif
794}
1da177e4
LT		 795
796/* Use this variant when it is known for sure that it
797 * is executing from interrupt context.
798 */
799static inline void dev_kfree_skb_irq(struct sk_buff *skb)
800{
801 if (atomic_dec_and_test(&skb->users)) {
802 struct softnet_data *sd;
803 unsigned long flags;
804
805 local_irq_save(flags);
806 sd = &__get_cpu_var(softnet_data);
807 skb->next = sd->completion_queue;
808 sd->completion_queue = skb;
809 raise_softirq_irqoff(NET_TX_SOFTIRQ);
810 local_irq_restore(flags);
811 }
812}
813
814/* Use this variant in places where it could be invoked
815 * either from interrupt or non-interrupt context.
816 */
56079431 817extern void dev_kfree_skb_any(struct sk_buff *skb);
1da177e4
LT		 818
819#define HAVE_NETIF_RX 1
820extern int netif_rx(struct sk_buff *skb);
821extern int netif_rx_ni(struct sk_buff *skb);
822#define HAVE_NETIF_RECEIVE_SKB 1
823extern int netif_receive_skb(struct sk_buff *skb);
c2373ee9 824extern int dev_valid_name(const char *name);
1da177e4
LT		 825extern int dev_ioctl(unsigned int cmd, void __user *);
826extern int dev_ethtool(struct ifreq *);
827extern unsigned dev_get_flags(const struct net_device *);
828extern int dev_change_flags(struct net_device *, unsigned);
829extern int dev_change_name(struct net_device *, char *);
830extern int dev_set_mtu(struct net_device *, int);
831extern int dev_set_mac_address(struct net_device *,
832 struct sockaddr *);
f6a78bfc
HX		 833extern int dev_hard_start_xmit(struct sk_buff *skb,
834 struct net_device *dev);
1da177e4
LT		 835
836extern void dev_init(void);
837
20380731 838extern int netdev_budget;
1da177e4
LT		 839
840/* Called by rtnetlink.c:rtnl_unlock() */
841extern void netdev_run_todo(void);
842
843static inline void dev_put(struct net_device *dev)
844{
845 atomic_dec(&dev->refcnt);
846}
847
15333061
SH		 848static inline void dev_hold(struct net_device *dev)
849{
850 atomic_inc(&dev->refcnt);
851}
1da177e4
LT		 852
853/* Carrier loss detection, dial on demand. The functions netif_carrier_on
854 * and _off may be called from IRQ context, but it is caller
855 * who is responsible for serialization of these calls.
b00055aa
SR		 856 *
857 * The name carrier is inappropriate, these functions should really be
858 * called netif_lowerlayer_*() because they represent the state of any
859 * kind of lower layer not just hardware media.
1da177e4
LT		 860 */
861
862extern void linkwatch_fire_event(struct net_device *dev);
863
864static inline int netif_carrier_ok(const struct net_device *dev)
865{
866 return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
867}
868
869extern void __netdev_watchdog_up(struct net_device *dev);
870
0a242efc 871extern void netif_carrier_on(struct net_device *dev);
1da177e4 872
0a242efc 873extern void netif_carrier_off(struct net_device *dev);
1da177e4 874
b00055aa
SR		 875static inline void netif_dormant_on(struct net_device *dev)
876{
877 if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state))
878 linkwatch_fire_event(dev);
879}
880
881static inline void netif_dormant_off(struct net_device *dev)
882{
883 if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state))
884 linkwatch_fire_event(dev);
885}
886
887static inline int netif_dormant(const struct net_device *dev)
888{
889 return test_bit(__LINK_STATE_DORMANT, &dev->state);
890}
891
892
893static inline int netif_oper_up(const struct net_device *dev) {
894 return (dev->operstate == IF_OPER_UP ||
895 dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
896}
897
1da177e4
LT		 898/* Hot-plugging. */
899static inline int netif_device_present(struct net_device *dev)
900{
901 return test_bit(__LINK_STATE_PRESENT, &dev->state);
902}
903
56079431 904extern void netif_device_detach(struct net_device *dev);
1da177e4 905
56079431 906extern void netif_device_attach(struct net_device *dev);
1da177e4
LT		 907
908/*
909 * Network interface message level settings
910 */
911#define HAVE_NETIF_MSG 1
912
913enum {
914 NETIF_MSG_DRV = 0x0001,
915 NETIF_MSG_PROBE = 0x0002,
916 NETIF_MSG_LINK = 0x0004,
917 NETIF_MSG_TIMER = 0x0008,
918 NETIF_MSG_IFDOWN = 0x0010,
919 NETIF_MSG_IFUP = 0x0020,
920 NETIF_MSG_RX_ERR = 0x0040,
921 NETIF_MSG_TX_ERR = 0x0080,
922 NETIF_MSG_TX_QUEUED = 0x0100,
923 NETIF_MSG_INTR = 0x0200,
924 NETIF_MSG_TX_DONE = 0x0400,
925 NETIF_MSG_RX_STATUS = 0x0800,
926 NETIF_MSG_PKTDATA = 0x1000,
927 NETIF_MSG_HW = 0x2000,
928 NETIF_MSG_WOL = 0x4000,
929};
930
931#define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
932#define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
933#define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
934#define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
935#define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
936#define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
937#define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
938#define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
939#define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
940#define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
941#define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
942#define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
943#define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
944#define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
945#define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
946
947static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
948{
949 /* use default */
950 if (debug_value < 0 || debug_value >= (sizeof(u32) * 8))
951 return default_msg_enable_bits;
952 if (debug_value == 0) /* no output */
953 return 0;
954 /* set low N bits */
955 return (1 << debug_value) - 1;
956}
957
0a122576
SH		 958/* Test if receive needs to be scheduled */
959static inline int __netif_rx_schedule_prep(struct net_device *dev)
793b883e
SH		 960{
961 return !test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state);
962}
1da177e4 963
0a122576 964/* Test if receive needs to be scheduled but only if up */
1da177e4
LT		 965static inline int netif_rx_schedule_prep(struct net_device *dev)
966{
0a122576 967 return netif_running(dev) && __netif_rx_schedule_prep(dev);
1da177e4
LT		 968}
969
970/* Add interface to tail of rx poll list. This assumes that _prep has
971 * already been called and returned 1.
972 */
973
56079431 974extern void __netif_rx_schedule(struct net_device *dev);
1da177e4
LT		 975
976/* Try to reschedule poll. Called by irq handler. */
977
978static inline void netif_rx_schedule(struct net_device *dev)
979{
980 if (netif_rx_schedule_prep(dev))
981 __netif_rx_schedule(dev);
982}
983
d3240312
SH		 984/* Try to reschedule poll. Called by dev->poll() after netif_rx_complete().
985 * Do not inline this?
986 */
1da177e4
LT		 987static inline int netif_rx_reschedule(struct net_device *dev, int undo)
988{
989 if (netif_rx_schedule_prep(dev)) {
990 unsigned long flags;
d3240312
SH		 991
992 dev->quota += undo;
993
1da177e4 994 local_irq_save(flags);
d3240312
SH		 995 list_add_tail(&dev->poll_list, &__get_cpu_var(softnet_data).poll_list);
996 __raise_softirq_irqoff(NET_RX_SOFTIRQ);
1da177e4
LT		 997 local_irq_restore(flags);
998 return 1;
999 }
1000 return 0;
1001}
1002
b0ba6667
HX		 1003/* same as netif_rx_complete, except that local_irq_save(flags)
1004 * has already been issued
1005 */
1006static inline void __netif_rx_complete(struct net_device *dev)
1007{
1008 BUG_ON(!test_bit(__LINK_STATE_RX_SCHED, &dev->state));
1009 list_del(&dev->poll_list);
1010 smp_mb__before_clear_bit();
1011 clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
1012}
1013
1da177e4
LT		 1014/* Remove interface from poll list: it must be in the poll list
1015 * on current cpu. This primitive is called by dev->poll(), when
1016 * it completes the work. The device cannot be out of poll list at this
1017 * moment, it is BUG().
1018 */
1019static inline void netif_rx_complete(struct net_device *dev)
1020{
1021 unsigned long flags;
1022
1023 local_irq_save(flags);
b0ba6667 1024 __netif_rx_complete(dev);
1da177e4
LT		 1025 local_irq_restore(flags);
1026}
1027
1028static inline void netif_poll_disable(struct net_device *dev)
1029{
3173c890 1030 while (test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state))
1da177e4 1031 /* No hurry. */
3173c890 1032 schedule_timeout_interruptible(1);
1da177e4
LT		 1033}
1034
1035static inline void netif_poll_enable(struct net_device *dev)
1036{
e44c39bd 1037 smp_mb__before_clear_bit();
1da177e4 1038 clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
1da177e4
LT		 1039}
1040
932ff279
HX		 1041static inline void netif_tx_lock(struct net_device *dev)
1042{
1043 spin_lock(&dev->_xmit_lock);
1044 dev->xmit_lock_owner = smp_processor_id();
1045}
1046
1047static inline void netif_tx_lock_bh(struct net_device *dev)
1048{
1049 spin_lock_bh(&dev->_xmit_lock);
1050 dev->xmit_lock_owner = smp_processor_id();
1051}
1052
1053static inline int netif_tx_trylock(struct net_device *dev)
1054{
53c4b2cc
HX		 1055 int ok = spin_trylock(&dev->_xmit_lock);
1056 if (likely(ok))
932ff279 1057 dev->xmit_lock_owner = smp_processor_id();
53c4b2cc 1058 return ok;
932ff279
HX		 1059}
1060
1061static inline void netif_tx_unlock(struct net_device *dev)
1062{
1063 dev->xmit_lock_owner = -1;
1064 spin_unlock(&dev->_xmit_lock);
1065}
1066
1067static inline void netif_tx_unlock_bh(struct net_device *dev)
1068{
1069 dev->xmit_lock_owner = -1;
1070 spin_unlock_bh(&dev->_xmit_lock);
1071}
1072
1da177e4
LT		 1073static inline void netif_tx_disable(struct net_device *dev)
1074{
932ff279 1075 netif_tx_lock_bh(dev);
1da177e4 1076 netif_stop_queue(dev);
932ff279 1077 netif_tx_unlock_bh(dev);
1da177e4
LT		 1078}
1079
1080/* These functions live elsewhere (drivers/net/net_init.c, but related) */
1081
1082extern void ether_setup(struct net_device *dev);
1083
1084/* Support for loadable net-drivers */
f25f4e44
PWJ		 1085extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
1086 void (*setup)(struct net_device *),
1087 unsigned int queue_count);
1088#define alloc_netdev(sizeof_priv, name, setup) \
1089 alloc_netdev_mq(sizeof_priv, name, setup, 1)
1da177e4
LT		 1090extern int register_netdev(struct net_device *dev);
1091extern void unregister_netdev(struct net_device *dev);
4417da66
PM		 1092/* Functions used for secondary unicast and multicast support */
1093extern void dev_set_rx_mode(struct net_device *dev);
1094extern void __dev_set_rx_mode(struct net_device *dev);
1095extern int dev_unicast_delete(struct net_device *dev, void *addr, int alen);
1096extern int dev_unicast_add(struct net_device *dev, void *addr, int alen);
1da177e4
LT		 1097extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all);
1098extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly);
a0a400d7
PM		 1099extern int dev_mc_sync(struct net_device *to, struct net_device *from);
1100extern void dev_mc_unsync(struct net_device *to, struct net_device *from);
61cbc2fc
PM		 1101extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all);
1102extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly);
1da177e4
LT		 1103extern void dev_set_promiscuity(struct net_device *dev, int inc);
1104extern void dev_set_allmulti(struct net_device *dev, int inc);
1105extern void netdev_state_change(struct net_device *dev);
d8a33ac4 1106extern void netdev_features_change(struct net_device *dev);
1da177e4
LT		 1107/* Load a device via the kmod */
1108extern void dev_load(const char *name);
1109extern void dev_mcast_init(void);
1110extern int netdev_max_backlog;
1111extern int weight_p;
1112extern int netdev_set_master(struct net_device *dev, struct net_device *master);
84fa7933 1113extern int skb_checksum_help(struct sk_buff *skb);
576a30eb 1114extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
fb286bb2
HX		 1115#ifdef CONFIG_BUG
1116extern void netdev_rx_csum_fault(struct net_device *dev);
1117#else
1118static inline void netdev_rx_csum_fault(struct net_device *dev)
1119{
1120}
1121#endif
1da177e4
LT		 1122/* rx skb timestamps */
1123extern void net_enable_timestamp(void);
1124extern void net_disable_timestamp(void);
1125
20380731
ACM		 1126#ifdef CONFIG_PROC_FS
1127extern void *dev_seq_start(struct seq_file *seq, loff_t *pos);
1128extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
1129extern void dev_seq_stop(struct seq_file *seq, void *v);
1130#endif
1131
1132extern void linkwatch_run_queue(void);
1133
7f353bf2
HX		 1134extern int netdev_compute_features(unsigned long all, unsigned long one);
1135
bcd76111 1136static inline int net_gso_ok(int features, int gso_type)
576a30eb 1137{
bcd76111 1138 int feature = gso_type << NETIF_F_GSO_SHIFT;
d6b4991a 1139 return (features & feature) == feature;
576a30eb
HX		 1140}
1141
bcd76111
HX		 1142static inline int skb_gso_ok(struct sk_buff *skb, int features)
1143{
a430a43d 1144 return net_gso_ok(features, skb_shinfo(skb)->gso_type);
bcd76111
HX		 1145}
1146
7967168c
HX		 1147static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
1148{
a430a43d
HX		 1149 return skb_is_gso(skb) &&
1150 (!skb_gso_ok(skb, dev->features) ||
84fa7933 1151 unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
7967168c
HX		 1152}
1153
7ea49ed7 1154/* On bonding slaves other than the currently active slave, suppress
f5b2b966
JV		 1155 * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and
1156 * ARP on active-backup slaves with arp_validate enabled.
7ea49ed7
DM		 1157 */
1158static inline int skb_bond_should_drop(struct sk_buff *skb)
1159{
1160 struct net_device *dev = skb->dev;
1161 struct net_device *master = dev->master;
1162
1163 if (master &&
1164 (dev->priv_flags & IFF_SLAVE_INACTIVE)) {
f5b2b966
JV		 1165 if ((dev->priv_flags & IFF_SLAVE_NEEDARP) &&
1166 skb->protocol == __constant_htons(ETH_P_ARP))
1167 return 0;
1168
7ea49ed7
DM		 1169 if (master->priv_flags & IFF_MASTER_ALB) {
1170 if (skb->pkt_type != PACKET_BROADCAST &&
1171 skb->pkt_type != PACKET_MULTICAST)
1172 return 0;
1173 }
1174 if (master->priv_flags & IFF_MASTER_8023AD &&
1175 skb->protocol == __constant_htons(ETH_P_SLOW))
1176 return 0;
1177
1178 return 1;
1179 }
1180 return 0;
1181}
1182
1da177e4
LT		 1183#endif /* __KERNEL__ */
1184
1185#endif /* _LINUX_DEV_H */
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