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[RFKILL]: fix net/rfkill/rfkill-input.c bug on 64-bit systems
[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;
193 int da_users;
194 int da_gusers;
195};
1da177e4
LT		 196
197/*
198 * We tag multicasts with these structures.
199 */
3fba5a8b
PM		 200
201#define dev_mc_list dev_addr_list
202#define dmi_addr da_addr
203#define dmi_addrlen da_addrlen
204#define dmi_users da_users
205#define dmi_gusers da_gusers
1da177e4
LT		 206
207struct hh_cache
208{
209 struct hh_cache *hh_next; /* Next entry */
210 atomic_t hh_refcnt; /* number of users */
f0490980
ED		 211/*
212 * We want hh_output, hh_len, hh_lock and hh_data be a in a separate
213 * cache line on SMP.
214 * They are mostly read, but hh_refcnt may be changed quite frequently,
215 * incurring cache line ping pongs.
216 */
217 __be16 hh_type ____cacheline_aligned_in_smp;
218 /* protocol identifier, f.e ETH_P_IP
1da177e4
LT		 219 * NOTE: For VLANs, this will be the
220 * encapuslated type. --BLG
221 */
d5c42c0e 222 u16 hh_len; /* length of header */
1da177e4 223 int (*hh_output)(struct sk_buff *skb);
3644f0ce 224 seqlock_t hh_lock;
1da177e4
LT		 225
226 /* cached hardware header; allow for machine alignment needs. */
227#define HH_DATA_MOD 16
228#define HH_DATA_OFF(__len) \
5ba0eac6 229 (HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
1da177e4
LT		 230#define HH_DATA_ALIGN(__len) \
231 (((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
232 unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)];
233};
234
235/* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
236 * Alternative is:
237 * dev->hard_header_len ? (dev->hard_header_len +
238 * (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
239 *
240 * We could use other alignment values, but we must maintain the
241 * relationship HH alignment <= LL alignment.
242 */
243#define LL_RESERVED_SPACE(dev) \
244 (((dev)->hard_header_len&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
245#define LL_RESERVED_SPACE_EXTRA(dev,extra) \
246 ((((dev)->hard_header_len+extra)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
247
248/* These flag bits are private to the generic network queueing
249 * layer, they may not be explicitly referenced by any other
250 * code.
251 */
252
253enum netdev_state_t
254{
255 __LINK_STATE_XOFF=0,
256 __LINK_STATE_START,
257 __LINK_STATE_PRESENT,
258 __LINK_STATE_SCHED,
259 __LINK_STATE_NOCARRIER,
260 __LINK_STATE_RX_SCHED,
b00055aa
SR		 261 __LINK_STATE_LINKWATCH_PENDING,
262 __LINK_STATE_DORMANT,
48d83325 263 __LINK_STATE_QDISC_RUNNING,
29578624
OK		 264 /* Set by the netpoll NAPI code */
265 __LINK_STATE_POLL_LIST_FROZEN,
1da177e4
LT		 266};
267
268
269/*
270 * This structure holds at boot time configured netdevice settings. They
271 * are then used in the device probing.
272 */
273struct netdev_boot_setup {
274 char name[IFNAMSIZ];
275 struct ifmap map;
276};
277#define NETDEV_BOOT_SETUP_MAX 8
278
20380731 279extern int __init netdev_boot_setup(char *str);
1da177e4
LT		 280
281/*
282 * The DEVICE structure.
283 * Actually, this whole structure is a big mistake. It mixes I/O
284 * data with strictly "high-level" data, and it has to know about
285 * almost every data structure used in the INET module.
286 *
287 * FIXME: cleanup struct net_device such that network protocol info
288 * moves out.
289 */
290
291struct net_device
292{
293
294 /*
295 * This is the first field of the "visible" part of this structure
296 * (i.e. as seen by users in the "Space.c" file). It is the name
297 * the interface.
298 */
299 char name[IFNAMSIZ];
9356b8fc
ED		 300 /* device name hash chain */
301 struct hlist_node name_hlist;
1da177e4
LT		 302
303 /*
304 * I/O specific fields
305 * FIXME: Merge these and struct ifmap into one
306 */
307 unsigned long mem_end; /* shared mem end */
308 unsigned long mem_start; /* shared mem start */
309 unsigned long base_addr; /* device I/O address */
310 unsigned int irq; /* device IRQ number */
311
312 /*
313 * Some hardware also needs these fields, but they are not
314 * part of the usual set specified in Space.c.
315 */
316
317 unsigned char if_port; /* Selectable AUI, TP,..*/
318 unsigned char dma; /* DMA channel */
319
320 unsigned long state;
321
7562f876 322 struct list_head dev_list;
1da177e4
LT		 323
324 /* The device initialization function. Called only once. */
325 int (*init)(struct net_device *dev);
326
327 /* ------- Fields preinitialized in Space.c finish here ------- */
328
9356b8fc
ED		 329 /* Net device features */
330 unsigned long features;
331#define NETIF_F_SG 1 /* Scatter/gather IO. */
d212f87b 332#define NETIF_F_IP_CSUM 2 /* Can checksum TCP/UDP over IPv4. */
9356b8fc
ED		 333#define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
334#define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
d212f87b 335#define NETIF_F_IPV6_CSUM 16 /* Can checksum TCP/UDP over IPV6 */
9356b8fc
ED		 336#define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
337#define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
338#define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
339#define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
340#define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
341#define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
37c3185a 342#define NETIF_F_GSO 2048 /* Enable software GSO. */
9356b8fc 343#define NETIF_F_LLTX 4096 /* LockLess TX */
f25f4e44 344#define NETIF_F_MULTI_QUEUE 16384 /* Has multiple TX/RX queues */
7967168c
HX		 345
346 /* Segmentation offload features */
347#define NETIF_F_GSO_SHIFT 16
bcd76111 348#define NETIF_F_GSO_MASK 0xffff0000
7967168c 349#define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
f83ef8c0 350#define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
576a30eb 351#define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
f83ef8c0
HX		 352#define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
353#define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
9356b8fc 354
78eb8877
HX		 355 /* List of features with software fallbacks. */
356#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
357
d212f87b 358
8648b305 359#define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
d212f87b
SH		 360#define NETIF_F_V4_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IP_CSUM)
361#define NETIF_F_V6_CSUM (NETIF_F_GEN_CSUM | NETIF_F_IPV6_CSUM)
362#define NETIF_F_ALL_CSUM (NETIF_F_V4_CSUM | NETIF_F_V6_CSUM)
8648b305 363
1da177e4
LT		 364 struct net_device *next_sched;
365
366 /* Interface index. Unique device identifier */
367 int ifindex;
368 int iflink;
369
370
371 struct net_device_stats* (*get_stats)(struct net_device *dev);
c45d286e 372 struct net_device_stats stats;
1da177e4 373
b86e0280 374#ifdef CONFIG_WIRELESS_EXT
1da177e4
LT		 375 /* List of functions to handle Wireless Extensions (instead of ioctl).
376 * See <net/iw_handler.h> for details. Jean II */
377 const struct iw_handler_def * wireless_handlers;
378 /* Instance data managed by the core of Wireless Extensions. */
379 struct iw_public_data * wireless_data;
b86e0280 380#endif
76fd8593 381 const struct ethtool_ops *ethtool_ops;
1da177e4
LT		 382
383 /*
384 * This marks the end of the "visible" part of the structure. All
385 * fields hereafter are internal to the system, and may change at
386 * will (read: may be cleaned up at will).
387 */
388
1da177e4 389
b00055aa 390 unsigned int flags; /* interface flags (a la BSD) */
1da177e4
LT		 391 unsigned short gflags;
392 unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */
393 unsigned short padded; /* How much padding added by alloc_netdev() */
394
b00055aa
SR		 395 unsigned char operstate; /* RFC2863 operstate */
396 unsigned char link_mode; /* mapping policy to operstate */
397
1da177e4
LT		 398 unsigned mtu; /* interface MTU value */
399 unsigned short type; /* interface hardware type */
400 unsigned short hard_header_len; /* hardware hdr length */
1da177e4
LT		 401
402 struct net_device *master; /* Pointer to master device of a group,
403 * which this device is member of.
404 */
405
406 /* Interface address info. */
a6f9a705 407 unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */
1da177e4
LT		 408 unsigned char addr_len; /* hardware address length */
409 unsigned short dev_id; /* for shared network cards */
410
4417da66
PM		 411 struct dev_addr_list *uc_list; /* Secondary unicast mac addresses */
412 int uc_count; /* Number of installed ucasts */
413 int uc_promisc;
3fba5a8b 414 struct dev_addr_list *mc_list; /* Multicast mac addresses */
1da177e4
LT		 415 int mc_count; /* Number of installed mcasts */
416 int promiscuity;
417 int allmulti;
418
1da177e4
LT		 419
420 /* Protocol specific pointers */
421
422 void *atalk_ptr; /* AppleTalk link */
423 void *ip_ptr; /* IPv4 specific data */
424 void *dn_ptr; /* DECnet specific data */
425 void *ip6_ptr; /* IPv6 specific data */
426 void *ec_ptr; /* Econet specific data */
427 void *ax25_ptr; /* AX.25 specific data */
704232c2
JB		 428 struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data,
429 assign before registering */
1da177e4 430
9356b8fc
ED		 431/*
432 * Cache line mostly used on receive path (including eth_type_trans())
433 */
434 struct list_head poll_list ____cacheline_aligned_in_smp;
435 /* Link to poll list */
436
437 int (*poll) (struct net_device *dev, int *quota);
1da177e4
LT		 438 int quota;
439 int weight;
9356b8fc
ED		 440 unsigned long last_rx; /* Time of last Rx */
441 /* Interface address info used in eth_type_trans() */
442 unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast
443 because most packets are unicast) */
444
445 unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
1da177e4 446
9356b8fc
ED		 447/*
448 * Cache line mostly used on queue transmit path (qdisc)
449 */
450 /* device queue lock */
451 spinlock_t queue_lock ____cacheline_aligned_in_smp;
1da177e4
LT		 452 struct Qdisc *qdisc;
453 struct Qdisc *qdisc_sleeping;
1da177e4
LT		 454 struct list_head qdisc_list;
455 unsigned long tx_queue_len; /* Max frames per queue allowed */
456
f6a78bfc
HX		 457 /* Partially transmitted GSO packet. */
458 struct sk_buff *gso_skb;
459
1da177e4
LT		 460 /* ingress path synchronizer */
461 spinlock_t ingress_lock;
9356b8fc
ED		 462 struct Qdisc *qdisc_ingress;
463
464/*
465 * One part is mostly used on xmit path (device)
466 */
1da177e4 467 /* hard_start_xmit synchronizer */
932ff279 468 spinlock_t _xmit_lock ____cacheline_aligned_in_smp;
1da177e4
LT		 469 /* cpu id of processor entered to hard_start_xmit or -1,
470 if nobody entered there.
471 */
472 int xmit_lock_owner;
9356b8fc
ED		 473 void *priv; /* pointer to private data */
474 int (*hard_start_xmit) (struct sk_buff *skb,
475 struct net_device *dev);
476 /* These may be needed for future network-power-down code. */
477 unsigned long trans_start; /* Time (in jiffies) of last Tx */
478
479 int watchdog_timeo; /* used by dev_watchdog() */
480 struct timer_list watchdog_timer;
481
482/*
483 * refcnt is a very hot point, so align it on SMP
484 */
1da177e4 485 /* Number of references to this device */
9356b8fc
ED		 486 atomic_t refcnt ____cacheline_aligned_in_smp;
487
1da177e4
LT		 488 /* delayed register/unregister */
489 struct list_head todo_list;
1da177e4
LT		 490 /* device index hash chain */
491 struct hlist_node index_hlist;
492
572a103d
HX		 493 struct net_device *link_watch_next;
494
1da177e4
LT		 495 /* register/unregister state machine */
496 enum { NETREG_UNINITIALIZED=0,
b17a7c17 497 NETREG_REGISTERED, /* completed register_netdevice */
1da177e4
LT		 498 NETREG_UNREGISTERING, /* called unregister_netdevice */
499 NETREG_UNREGISTERED, /* completed unregister todo */
500 NETREG_RELEASED, /* called free_netdev */
501 } reg_state;
502
1da177e4
LT		 503 /* Called after device is detached from network. */
504 void (*uninit)(struct net_device *dev);
505 /* Called after last user reference disappears. */
506 void (*destructor)(struct net_device *dev);
507
508 /* Pointers to interface service routines. */
509 int (*open)(struct net_device *dev);
510 int (*stop)(struct net_device *dev);
1da177e4 511#define HAVE_NETDEV_POLL
1da177e4
LT		 512 int (*hard_header) (struct sk_buff *skb,
513 struct net_device *dev,
514 unsigned short type,
515 void *daddr,
516 void *saddr,
517 unsigned len);
518 int (*rebuild_header)(struct sk_buff *skb);
4417da66
PM		 519#define HAVE_SET_RX_MODE
520 void (*set_rx_mode)(struct net_device *dev);
1da177e4
LT		 521#define HAVE_MULTICAST
522 void (*set_multicast_list)(struct net_device *dev);
523#define HAVE_SET_MAC_ADDR
524 int (*set_mac_address)(struct net_device *dev,
525 void *addr);
526#define HAVE_PRIVATE_IOCTL
527 int (*do_ioctl)(struct net_device *dev,
528 struct ifreq *ifr, int cmd);
529#define HAVE_SET_CONFIG
530 int (*set_config)(struct net_device *dev,
531 struct ifmap *map);
532#define HAVE_HEADER_CACHE
533 int (*hard_header_cache)(struct neighbour *neigh,
534 struct hh_cache *hh);
535 void (*header_cache_update)(struct hh_cache *hh,
536 struct net_device *dev,
537 unsigned char * haddr);
538#define HAVE_CHANGE_MTU
539 int (*change_mtu)(struct net_device *dev, int new_mtu);
540
541#define HAVE_TX_TIMEOUT
542 void (*tx_timeout) (struct net_device *dev);
543
544 void (*vlan_rx_register)(struct net_device *dev,
545 struct vlan_group *grp);
546 void (*vlan_rx_add_vid)(struct net_device *dev,
547 unsigned short vid);
548 void (*vlan_rx_kill_vid)(struct net_device *dev,
549 unsigned short vid);
550
551 int (*hard_header_parse)(struct sk_buff *skb,
552 unsigned char *haddr);
553 int (*neigh_setup)(struct net_device *dev, struct neigh_parms *);
554#ifdef CONFIG_NETPOLL
115c1d6e 555 struct netpoll_info *npinfo;
1da177e4
LT		 556#endif
557#ifdef CONFIG_NET_POLL_CONTROLLER
558 void (*poll_controller)(struct net_device *dev);
559#endif
560
561 /* bridge stuff */
562 struct net_bridge_port *br_port;
563
1da177e4 564 /* class/net/name entry */
43cb76d9 565 struct device dev;
fe9925b5
SH		 566 /* space for optional statistics and wireless sysfs groups */
567 struct attribute_group *sysfs_groups[3];
38f7b870
PM		 568
569 /* rtnetlink link ops */
570 const struct rtnl_link_ops *rtnl_link_ops;
f25f4e44
PWJ		 571
572 /* The TX queue control structures */
573 unsigned int egress_subqueue_count;
574 struct net_device_subqueue egress_subqueue[0];
1da177e4 575};
43cb76d9 576#define to_net_dev(d) container_of(d, struct net_device, dev)
1da177e4
LT		 577
578#define NETDEV_ALIGN 32
579#define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1)
580
6472ce60 581static inline void *netdev_priv(const struct net_device *dev)
1da177e4 582{
f25f4e44 583 return dev->priv;
1da177e4
LT		 584}
585
586#define SET_MODULE_OWNER(dev) do { } while (0)
587/* Set the sysfs physical device reference for the network logical device
588 * if set prior to registration will cause a symlink during initialization.
589 */
43cb76d9 590#define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
1da177e4
LT		 591
592struct packet_type {
f2ccd8fa
DM		 593 __be16 type; /* This is really htons(ether_type). */
594 struct net_device *dev; /* NULL is wildcarded here */
595 int (*func) (struct sk_buff *,
596 struct net_device *,
597 struct packet_type *,
598 struct net_device *);
576a30eb
HX		 599 struct sk_buff *(*gso_segment)(struct sk_buff *skb,
600 int features);
a430a43d 601 int (*gso_send_check)(struct sk_buff *skb);
1da177e4
LT		 602 void *af_packet_priv;
603 struct list_head list;
604};
605
606#include <linux/interrupt.h>
607#include <linux/notifier.h>
608
609extern struct net_device loopback_dev; /* The loopback */
7562f876 610extern struct list_head dev_base_head; /* All devices */
1da177e4
LT		 611extern rwlock_t dev_base_lock; /* Device list lock */
612
7562f876
PE		 613#define for_each_netdev(d) \
614 list_for_each_entry(d, &dev_base_head, dev_list)
615#define for_each_netdev_safe(d, n) \
616 list_for_each_entry_safe(d, n, &dev_base_head, dev_list)
617#define for_each_netdev_continue(d) \
618 list_for_each_entry_continue(d, &dev_base_head, dev_list)
619#define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
620
621static inline struct net_device *next_net_device(struct net_device *dev)
622{
623 struct list_head *lh;
624
625 lh = dev->dev_list.next;
626 return lh == &dev_base_head ? NULL : net_device_entry(lh);
627}
628
629static inline struct net_device *first_net_device(void)
630{
631 return list_empty(&dev_base_head) ? NULL :
632 net_device_entry(dev_base_head.next);
633}
634
1da177e4
LT		 635extern int netdev_boot_setup_check(struct net_device *dev);
636extern unsigned long netdev_boot_base(const char *prefix, int unit);
637extern struct net_device *dev_getbyhwaddr(unsigned short type, char *hwaddr);
638extern struct net_device *dev_getfirstbyhwtype(unsigned short type);
4e9cac2b 639extern struct net_device *__dev_getfirstbyhwtype(unsigned short type);
1da177e4
LT		 640extern void dev_add_pack(struct packet_type *pt);
641extern void dev_remove_pack(struct packet_type *pt);
642extern void __dev_remove_pack(struct packet_type *pt);
643
644extern struct net_device *dev_get_by_flags(unsigned short flags,
645 unsigned short mask);
646extern struct net_device *dev_get_by_name(const char *name);
647extern struct net_device *__dev_get_by_name(const char *name);
648extern int dev_alloc_name(struct net_device *dev, const char *name);
649extern int dev_open(struct net_device *dev);
650extern int dev_close(struct net_device *dev);
651extern int dev_queue_xmit(struct sk_buff *skb);
652extern int register_netdevice(struct net_device *dev);
22f8cde5 653extern void unregister_netdevice(struct net_device *dev);
1da177e4
LT		 654extern void free_netdev(struct net_device *dev);
655extern void synchronize_net(void);
656extern int register_netdevice_notifier(struct notifier_block *nb);
657extern int unregister_netdevice_notifier(struct notifier_block *nb);
658extern int call_netdevice_notifiers(unsigned long val, void *v);
659extern struct net_device *dev_get_by_index(int ifindex);
660extern struct net_device *__dev_get_by_index(int ifindex);
661extern int dev_restart(struct net_device *dev);
662#ifdef CONFIG_NETPOLL_TRAP
663extern int netpoll_trap(void);
664#endif
665
666typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
667extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf);
668static inline int unregister_gifconf(unsigned int family)
669{
670 return register_gifconf(family, NULL);
671}
672
673/*
674 * Incoming packets are placed on per-cpu queues so that
675 * no locking is needed.
676 */
677
678struct softnet_data
679{
31aa02c5 680 struct net_device *output_queue;
1da177e4
LT		 681 struct sk_buff_head input_pkt_queue;
682 struct list_head poll_list;
1da177e4
LT		 683 struct sk_buff *completion_queue;
684
685 struct net_device backlog_dev; /* Sorry. 8) */
db217334
CL		 686#ifdef CONFIG_NET_DMA
687 struct dma_chan *net_dma;
688#endif
1da177e4
LT		 689};
690
691DECLARE_PER_CPU(struct softnet_data,softnet_data);
692
693#define HAVE_NETIF_QUEUE
694
56079431 695extern void __netif_schedule(struct net_device *dev);
1da177e4
LT		 696
697static inline void netif_schedule(struct net_device *dev)
698{
699 if (!test_bit(__LINK_STATE_XOFF, &dev->state))
700 __netif_schedule(dev);
701}
702
703static inline void netif_start_queue(struct net_device *dev)
704{
705 clear_bit(__LINK_STATE_XOFF, &dev->state);
706}
707
708static inline void netif_wake_queue(struct net_device *dev)
709{
710#ifdef CONFIG_NETPOLL_TRAP
5f286e11
SS		 711 if (netpoll_trap()) {
712 clear_bit(__LINK_STATE_XOFF, &dev->state);
1da177e4 713 return;
5f286e11 714 }
1da177e4
LT		 715#endif
716 if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state))
717 __netif_schedule(dev);
718}
719
720static inline void netif_stop_queue(struct net_device *dev)
721{
1da177e4
LT		 722 set_bit(__LINK_STATE_XOFF, &dev->state);
723}
724
725static inline int netif_queue_stopped(const struct net_device *dev)
726{
727 return test_bit(__LINK_STATE_XOFF, &dev->state);
728}
729
730static inline int netif_running(const struct net_device *dev)
731{
732 return test_bit(__LINK_STATE_START, &dev->state);
733}
734
f25f4e44
PWJ		 735/*
736 * Routines to manage the subqueues on a device. We only need start
737 * stop, and a check if it's stopped. All other device management is
738 * done at the overall netdevice level.
739 * Also test the device if we're multiqueue.
740 */
741static inline void netif_start_subqueue(struct net_device *dev, u16 queue_index)
742{
743#ifdef CONFIG_NETDEVICES_MULTIQUEUE
744 clear_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
745#endif
746}
747
748static inline void netif_stop_subqueue(struct net_device *dev, u16 queue_index)
749{
750#ifdef CONFIG_NETDEVICES_MULTIQUEUE
751#ifdef CONFIG_NETPOLL_TRAP
752 if (netpoll_trap())
753 return;
754#endif
755 set_bit(__LINK_STATE_XOFF, &dev->egress_subqueue[queue_index].state);
756#endif
757}
758
759static inline int netif_subqueue_stopped(const struct net_device *dev,
760 u16 queue_index)
761{
762#ifdef CONFIG_NETDEVICES_MULTIQUEUE
763 return test_bit(__LINK_STATE_XOFF,
764 &dev->egress_subqueue[queue_index].state);
765#else
766 return 0;
767#endif
768}
769
770static inline void netif_wake_subqueue(struct net_device *dev, u16 queue_index)
771{
772#ifdef CONFIG_NETDEVICES_MULTIQUEUE
773#ifdef CONFIG_NETPOLL_TRAP
774 if (netpoll_trap())
775 return;
776#endif
777 if (test_and_clear_bit(__LINK_STATE_XOFF,
778 &dev->egress_subqueue[queue_index].state))
779 __netif_schedule(dev);
780#endif
781}
782
783static inline int netif_is_multiqueue(const struct net_device *dev)
784{
785#ifdef CONFIG_NETDEVICES_MULTIQUEUE
786 return (!!(NETIF_F_MULTI_QUEUE & dev->features));
787#else
788 return 0;
789#endif
790}
1da177e4
LT		 791
792/* Use this variant when it is known for sure that it
793 * is executing from interrupt context.
794 */
795static inline void dev_kfree_skb_irq(struct sk_buff *skb)
796{
797 if (atomic_dec_and_test(&skb->users)) {
798 struct softnet_data *sd;
799 unsigned long flags;
800
801 local_irq_save(flags);
802 sd = &__get_cpu_var(softnet_data);
803 skb->next = sd->completion_queue;
804 sd->completion_queue = skb;
805 raise_softirq_irqoff(NET_TX_SOFTIRQ);
806 local_irq_restore(flags);
807 }
808}
809
810/* Use this variant in places where it could be invoked
811 * either from interrupt or non-interrupt context.
812 */
56079431 813extern void dev_kfree_skb_any(struct sk_buff *skb);
1da177e4
LT		 814
815#define HAVE_NETIF_RX 1
816extern int netif_rx(struct sk_buff *skb);
817extern int netif_rx_ni(struct sk_buff *skb);
818#define HAVE_NETIF_RECEIVE_SKB 1
819extern int netif_receive_skb(struct sk_buff *skb);
c2373ee9 820extern int dev_valid_name(const char *name);
1da177e4
LT		 821extern int dev_ioctl(unsigned int cmd, void __user *);
822extern int dev_ethtool(struct ifreq *);
823extern unsigned dev_get_flags(const struct net_device *);
824extern int dev_change_flags(struct net_device *, unsigned);
825extern int dev_change_name(struct net_device *, char *);
826extern int dev_set_mtu(struct net_device *, int);
827extern int dev_set_mac_address(struct net_device *,
828 struct sockaddr *);
f6a78bfc
HX		 829extern int dev_hard_start_xmit(struct sk_buff *skb,
830 struct net_device *dev);
1da177e4
LT		 831
832extern void dev_init(void);
833
20380731 834extern int netdev_budget;
1da177e4
LT		 835
836/* Called by rtnetlink.c:rtnl_unlock() */
837extern void netdev_run_todo(void);
838
839static inline void dev_put(struct net_device *dev)
840{
841 atomic_dec(&dev->refcnt);
842}
843
15333061
SH		 844static inline void dev_hold(struct net_device *dev)
845{
846 atomic_inc(&dev->refcnt);
847}
1da177e4
LT		 848
849/* Carrier loss detection, dial on demand. The functions netif_carrier_on
850 * and _off may be called from IRQ context, but it is caller
851 * who is responsible for serialization of these calls.
b00055aa
SR		 852 *
853 * The name carrier is inappropriate, these functions should really be
854 * called netif_lowerlayer_*() because they represent the state of any
855 * kind of lower layer not just hardware media.
1da177e4
LT		 856 */
857
858extern void linkwatch_fire_event(struct net_device *dev);
859
860static inline int netif_carrier_ok(const struct net_device *dev)
861{
862 return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
863}
864
865extern void __netdev_watchdog_up(struct net_device *dev);
866
0a242efc 867extern void netif_carrier_on(struct net_device *dev);
1da177e4 868
0a242efc 869extern void netif_carrier_off(struct net_device *dev);
1da177e4 870
b00055aa
SR		 871static inline void netif_dormant_on(struct net_device *dev)
872{
873 if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state))
874 linkwatch_fire_event(dev);
875}
876
877static inline void netif_dormant_off(struct net_device *dev)
878{
879 if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state))
880 linkwatch_fire_event(dev);
881}
882
883static inline int netif_dormant(const struct net_device *dev)
884{
885 return test_bit(__LINK_STATE_DORMANT, &dev->state);
886}
887
888
889static inline int netif_oper_up(const struct net_device *dev) {
890 return (dev->operstate == IF_OPER_UP ||
891 dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
892}
893
1da177e4
LT		 894/* Hot-plugging. */
895static inline int netif_device_present(struct net_device *dev)
896{
897 return test_bit(__LINK_STATE_PRESENT, &dev->state);
898}
899
56079431 900extern void netif_device_detach(struct net_device *dev);
1da177e4 901
56079431 902extern void netif_device_attach(struct net_device *dev);
1da177e4
LT		 903
904/*
905 * Network interface message level settings
906 */
907#define HAVE_NETIF_MSG 1
908
909enum {
910 NETIF_MSG_DRV = 0x0001,
911 NETIF_MSG_PROBE = 0x0002,
912 NETIF_MSG_LINK = 0x0004,
913 NETIF_MSG_TIMER = 0x0008,
914 NETIF_MSG_IFDOWN = 0x0010,
915 NETIF_MSG_IFUP = 0x0020,
916 NETIF_MSG_RX_ERR = 0x0040,
917 NETIF_MSG_TX_ERR = 0x0080,
918 NETIF_MSG_TX_QUEUED = 0x0100,
919 NETIF_MSG_INTR = 0x0200,
920 NETIF_MSG_TX_DONE = 0x0400,
921 NETIF_MSG_RX_STATUS = 0x0800,
922 NETIF_MSG_PKTDATA = 0x1000,
923 NETIF_MSG_HW = 0x2000,
924 NETIF_MSG_WOL = 0x4000,
925};
926
927#define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
928#define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
929#define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
930#define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
931#define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
932#define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
933#define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
934#define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
935#define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
936#define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
937#define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
938#define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
939#define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
940#define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
941#define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
942
943static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
944{
945 /* use default */
946 if (debug_value < 0 || debug_value >= (sizeof(u32) * 8))
947 return default_msg_enable_bits;
948 if (debug_value == 0) /* no output */
949 return 0;
950 /* set low N bits */
951 return (1 << debug_value) - 1;
952}
953
0a122576
SH		 954/* Test if receive needs to be scheduled */
955static inline int __netif_rx_schedule_prep(struct net_device *dev)
793b883e
SH		 956{
957 return !test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state);
958}
1da177e4 959
0a122576 960/* Test if receive needs to be scheduled but only if up */
1da177e4
LT		 961static inline int netif_rx_schedule_prep(struct net_device *dev)
962{
0a122576 963 return netif_running(dev) && __netif_rx_schedule_prep(dev);
1da177e4
LT		 964}
965
966/* Add interface to tail of rx poll list. This assumes that _prep has
967 * already been called and returned 1.
968 */
969
56079431 970extern void __netif_rx_schedule(struct net_device *dev);
1da177e4
LT		 971
972/* Try to reschedule poll. Called by irq handler. */
973
974static inline void netif_rx_schedule(struct net_device *dev)
975{
976 if (netif_rx_schedule_prep(dev))
977 __netif_rx_schedule(dev);
978}
979
d3240312
SH		 980/* Try to reschedule poll. Called by dev->poll() after netif_rx_complete().
981 * Do not inline this?
982 */
1da177e4
LT		 983static inline int netif_rx_reschedule(struct net_device *dev, int undo)
984{
985 if (netif_rx_schedule_prep(dev)) {
986 unsigned long flags;
d3240312
SH		 987
988 dev->quota += undo;
989
1da177e4 990 local_irq_save(flags);
d3240312
SH		 991 list_add_tail(&dev->poll_list, &__get_cpu_var(softnet_data).poll_list);
992 __raise_softirq_irqoff(NET_RX_SOFTIRQ);
1da177e4
LT		 993 local_irq_restore(flags);
994 return 1;
995 }
996 return 0;
997}
998
b0ba6667
HX		 999/* same as netif_rx_complete, except that local_irq_save(flags)
1000 * has already been issued
1001 */
1002static inline void __netif_rx_complete(struct net_device *dev)
1003{
1004 BUG_ON(!test_bit(__LINK_STATE_RX_SCHED, &dev->state));
1005 list_del(&dev->poll_list);
1006 smp_mb__before_clear_bit();
1007 clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
1008}
1009
1da177e4
LT		 1010/* Remove interface from poll list: it must be in the poll list
1011 * on current cpu. This primitive is called by dev->poll(), when
1012 * it completes the work. The device cannot be out of poll list at this
1013 * moment, it is BUG().
1014 */
1015static inline void netif_rx_complete(struct net_device *dev)
1016{
1017 unsigned long flags;
1018
29578624
OK		 1019#ifdef CONFIG_NETPOLL
1020 /* Prevent race with netpoll - yes, this is a kludge.
1021 * But at least it doesn't penalize the non-netpoll
1022 * code path. */
1023 if (test_bit(__LINK_STATE_POLL_LIST_FROZEN, &dev->state))
1024 return;
1025#endif
1026
1da177e4 1027 local_irq_save(flags);
b0ba6667 1028 __netif_rx_complete(dev);
1da177e4
LT		 1029 local_irq_restore(flags);
1030}
1031
1032static inline void netif_poll_disable(struct net_device *dev)
1033{
3173c890 1034 while (test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state))
1da177e4 1035 /* No hurry. */
3173c890 1036 schedule_timeout_interruptible(1);
1da177e4
LT		 1037}
1038
1039static inline void netif_poll_enable(struct net_device *dev)
1040{
e44c39bd 1041 smp_mb__before_clear_bit();
1da177e4 1042 clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
1da177e4
LT		 1043}
1044
932ff279
HX		 1045static inline void netif_tx_lock(struct net_device *dev)
1046{
1047 spin_lock(&dev->_xmit_lock);
1048 dev->xmit_lock_owner = smp_processor_id();
1049}
1050
1051static inline void netif_tx_lock_bh(struct net_device *dev)
1052{
1053 spin_lock_bh(&dev->_xmit_lock);
1054 dev->xmit_lock_owner = smp_processor_id();
1055}
1056
1057static inline int netif_tx_trylock(struct net_device *dev)
1058{
53c4b2cc
HX		 1059 int ok = spin_trylock(&dev->_xmit_lock);
1060 if (likely(ok))
932ff279 1061 dev->xmit_lock_owner = smp_processor_id();
53c4b2cc 1062 return ok;
932ff279
HX		 1063}
1064
1065static inline void netif_tx_unlock(struct net_device *dev)
1066{
1067 dev->xmit_lock_owner = -1;
1068 spin_unlock(&dev->_xmit_lock);
1069}
1070
1071static inline void netif_tx_unlock_bh(struct net_device *dev)
1072{
1073 dev->xmit_lock_owner = -1;
1074 spin_unlock_bh(&dev->_xmit_lock);
1075}
1076
1da177e4
LT		 1077static inline void netif_tx_disable(struct net_device *dev)
1078{
932ff279 1079 netif_tx_lock_bh(dev);
1da177e4 1080 netif_stop_queue(dev);
932ff279 1081 netif_tx_unlock_bh(dev);
1da177e4
LT		 1082}
1083
1084/* These functions live elsewhere (drivers/net/net_init.c, but related) */
1085
1086extern void ether_setup(struct net_device *dev);
1087
1088/* Support for loadable net-drivers */
f25f4e44
PWJ		 1089extern struct net_device *alloc_netdev_mq(int sizeof_priv, const char *name,
1090 void (*setup)(struct net_device *),
1091 unsigned int queue_count);
1092#define alloc_netdev(sizeof_priv, name, setup) \
1093 alloc_netdev_mq(sizeof_priv, name, setup, 1)
1da177e4
LT		 1094extern int register_netdev(struct net_device *dev);
1095extern void unregister_netdev(struct net_device *dev);
4417da66
PM		 1096/* Functions used for secondary unicast and multicast support */
1097extern void dev_set_rx_mode(struct net_device *dev);
1098extern void __dev_set_rx_mode(struct net_device *dev);
1099extern int dev_unicast_delete(struct net_device *dev, void *addr, int alen);
1100extern int dev_unicast_add(struct net_device *dev, void *addr, int alen);
1da177e4
LT		 1101extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all);
1102extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly);
1103extern void dev_mc_discard(struct net_device *dev);
61cbc2fc
PM		 1104extern int __dev_addr_delete(struct dev_addr_list **list, int *count, void *addr, int alen, int all);
1105extern int __dev_addr_add(struct dev_addr_list **list, int *count, void *addr, int alen, int newonly);
bf742482 1106extern void __dev_addr_discard(struct dev_addr_list **list);
1da177e4
LT		 1107extern void dev_set_promiscuity(struct net_device *dev, int inc);
1108extern void dev_set_allmulti(struct net_device *dev, int inc);
1109extern void netdev_state_change(struct net_device *dev);
d8a33ac4 1110extern void netdev_features_change(struct net_device *dev);
1da177e4
LT		 1111/* Load a device via the kmod */
1112extern void dev_load(const char *name);
1113extern void dev_mcast_init(void);
1114extern int netdev_max_backlog;
1115extern int weight_p;
1116extern int netdev_set_master(struct net_device *dev, struct net_device *master);
84fa7933 1117extern int skb_checksum_help(struct sk_buff *skb);
576a30eb 1118extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
fb286bb2
HX		 1119#ifdef CONFIG_BUG
1120extern void netdev_rx_csum_fault(struct net_device *dev);
1121#else
1122static inline void netdev_rx_csum_fault(struct net_device *dev)
1123{
1124}
1125#endif
1da177e4
LT		 1126/* rx skb timestamps */
1127extern void net_enable_timestamp(void);
1128extern void net_disable_timestamp(void);
1129
20380731
ACM		 1130#ifdef CONFIG_PROC_FS
1131extern void *dev_seq_start(struct seq_file *seq, loff_t *pos);
1132extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
1133extern void dev_seq_stop(struct seq_file *seq, void *v);
1134#endif
1135
1136extern void linkwatch_run_queue(void);
1137
bcd76111 1138static inline int net_gso_ok(int features, int gso_type)
576a30eb 1139{
bcd76111 1140 int feature = gso_type << NETIF_F_GSO_SHIFT;
d6b4991a 1141 return (features & feature) == feature;
576a30eb
HX		 1142}
1143
bcd76111
HX		 1144static inline int skb_gso_ok(struct sk_buff *skb, int features)
1145{
a430a43d 1146 return net_gso_ok(features, skb_shinfo(skb)->gso_type);
bcd76111
HX		 1147}
1148
7967168c
HX		 1149static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
1150{
a430a43d
HX		 1151 return skb_is_gso(skb) &&
1152 (!skb_gso_ok(skb, dev->features) ||
84fa7933 1153 unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
7967168c
HX		 1154}
1155
7ea49ed7 1156/* On bonding slaves other than the currently active slave, suppress
f5b2b966
JV		 1157 * duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and
1158 * ARP on active-backup slaves with arp_validate enabled.
7ea49ed7
DM		 1159 */
1160static inline int skb_bond_should_drop(struct sk_buff *skb)
1161{
1162 struct net_device *dev = skb->dev;
1163 struct net_device *master = dev->master;
1164
1165 if (master &&
1166 (dev->priv_flags & IFF_SLAVE_INACTIVE)) {
f5b2b966
JV		 1167 if ((dev->priv_flags & IFF_SLAVE_NEEDARP) &&
1168 skb->protocol == __constant_htons(ETH_P_ARP))
1169 return 0;
1170
7ea49ed7
DM		 1171 if (master->priv_flags & IFF_MASTER_ALB) {
1172 if (skb->pkt_type != PACKET_BROADCAST &&
1173 skb->pkt_type != PACKET_MULTICAST)
1174 return 0;
1175 }
1176 if (master->priv_flags & IFF_MASTER_8023AD &&
1177 skb->protocol == __constant_htons(ETH_P_SLOW))
1178 return 0;
1179
1180 return 1;
1181 }
1182 return 0;
1183}
1184
1da177e4
LT		 1185#endif /* __KERNEL__ */
1186
1187#endif /* _LINUX_DEV_H */
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