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
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* Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
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* Corey Minyard <wf-rch!minyard@relay.EU.net>
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* Donald J. Becker, <becker@cesdis.gsfc.nasa.gov>
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* Alan Cox, <Alan.Cox@linux.org>
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* Bjorn Ekwall. <bj0rn@blox.se>
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* Pekka Riikonen <priikone@poseidon.pspt.fi>
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* This program is free software; you can redistribute it and/or
19
* modify it under the terms of the GNU General Public License
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* as published by the Free Software Foundation; either version
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* 2 of the License, or (at your option) any later version.
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* Moved to /usr/include/linux for NET3
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#ifndef _LINUX_NETDEVICE_H
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#define _LINUX_NETDEVICE_H
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#include <linux/if_ether.h>
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#include <linux/if_packet.h>
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#include <linux/timer.h>
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#include <asm/atomic.h>
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#include <asm/cache.h>
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#include <asm/byteorder.h>
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#include <linux/device.h>
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#include <linux/percpu.h>
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#include <linux/dmaengine.h>
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/* source back-compat hooks */
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#define SET_ETHTOOL_OPS(netdev,ops) \
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( (netdev)->ethtool_ops = (ops) )
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#define HAVE_ALLOC_NETDEV /* feature macro: alloc_xxxdev
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functions are available. */
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#define HAVE_FREE_NETDEV /* free_netdev() */
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#define HAVE_NETDEV_PRIV /* netdev_priv() */
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#define NET_XMIT_SUCCESS 0
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#define NET_XMIT_DROP 1 /* skb dropped */
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#define NET_XMIT_CN 2 /* congestion notification */
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#define NET_XMIT_POLICED 3 /* skb is shot by police */
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#define NET_XMIT_BYPASS 4 /* packet does not leave via dequeue;
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(TC use only - dev_queue_xmit
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returns this as NET_XMIT_SUCCESS) */
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/* Backlog congestion levels */
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#define NET_RX_SUCCESS 0 /* keep 'em coming, baby */
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#define NET_RX_DROP 1 /* packet dropped */
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#define NET_RX_CN_LOW 2 /* storm alert, just in case */
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#define NET_RX_CN_MOD 3 /* Storm on its way! */
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#define NET_RX_CN_HIGH 4 /* The storm is here */
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#define NET_RX_BAD 5 /* packet dropped due to kernel error */
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/* NET_XMIT_CN is special. It does not guarantee that this packet is lost. It
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* indicates that the device will soon be dropping packets, or already drops
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* some packets of the same priority; prompting us to send less aggressively. */
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#define net_xmit_eval(e) ((e) == NET_XMIT_CN? 0 : (e))
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#define net_xmit_errno(e) ((e) != NET_XMIT_CN ? -ENOBUFS : 0)
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#define MAX_ADDR_LEN 32 /* Largest hardware address length */
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/* Driver transmit return codes */
83
#define NETDEV_TX_OK 0 /* driver took care of packet */
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#define NETDEV_TX_BUSY 1 /* driver tx path was busy*/
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#define NETDEV_TX_LOCKED -1 /* driver tx lock was already taken */
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* Compute the worst case header length according to the protocols
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#if !defined(CONFIG_AX25) && !defined(CONFIG_AX25_MODULE) && !defined(CONFIG_TR)
93
#define LL_MAX_HEADER 32
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#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE)
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#define LL_MAX_HEADER 96
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#define LL_MAX_HEADER 48
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#if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) && \
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!defined(CONFIG_NET_IPGRE) && !defined(CONFIG_NET_IPGRE_MODULE) && \
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!defined(CONFIG_IPV6_SIT) && !defined(CONFIG_IPV6_SIT_MODULE) && \
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!defined(CONFIG_IPV6_TUNNEL) && !defined(CONFIG_IPV6_TUNNEL_MODULE)
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#define MAX_HEADER LL_MAX_HEADER
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#define MAX_HEADER (LL_MAX_HEADER + 48)
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* Network device statistics. Akin to the 2.0 ether stats but
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* with byte counters.
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struct net_device_stats
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unsigned long rx_packets; /* total packets received */
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unsigned long tx_packets; /* total packets transmitted */
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unsigned long rx_bytes; /* total bytes received */
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unsigned long tx_bytes; /* total bytes transmitted */
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unsigned long rx_errors; /* bad packets received */
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unsigned long tx_errors; /* packet transmit problems */
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unsigned long rx_dropped; /* no space in linux buffers */
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unsigned long tx_dropped; /* no space available in linux */
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unsigned long multicast; /* multicast packets received */
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unsigned long collisions;
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/* detailed rx_errors: */
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unsigned long rx_length_errors;
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unsigned long rx_over_errors; /* receiver ring buff overflow */
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unsigned long rx_crc_errors; /* recved pkt with crc error */
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unsigned long rx_frame_errors; /* recv'd frame alignment error */
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unsigned long rx_fifo_errors; /* recv'r fifo overrun */
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unsigned long rx_missed_errors; /* receiver missed packet */
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/* detailed tx_errors */
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unsigned long tx_aborted_errors;
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unsigned long tx_carrier_errors;
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unsigned long tx_fifo_errors;
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unsigned long tx_heartbeat_errors;
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unsigned long tx_window_errors;
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unsigned long rx_compressed;
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unsigned long tx_compressed;
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/* Media selection options. */
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#include <linux/cache.h>
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#include <linux/skbuff.h>
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struct netif_rx_stats
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unsigned time_squeeze;
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unsigned cpu_collision;
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DECLARE_PER_CPU(struct netif_rx_stats, netdev_rx_stat);
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* We tag multicasts with these structures.
187
struct dev_mc_list *next;
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__u8 dmi_addr[MAX_ADDR_LEN];
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unsigned char dmi_addrlen;
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struct hh_cache *hh_next; /* Next entry */
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atomic_t hh_refcnt; /* number of users */
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* We want hh_output, hh_len, hh_lock and hh_data be a in a separate
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* They are mostly read, but hh_refcnt may be changed quite frequently,
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* incurring cache line ping pongs.
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__be16 hh_type ____cacheline_aligned_in_smp;
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/* protocol identifier, f.e ETH_P_IP
206
* NOTE: For VLANs, this will be the
207
* encapuslated type. --BLG
209
u16 hh_len; /* length of header */
210
int (*hh_output)(struct sk_buff *skb);
213
/* cached hardware header; allow for machine alignment needs. */
214
#define HH_DATA_MOD 16
215
#define HH_DATA_OFF(__len) \
216
(HH_DATA_MOD - (((__len - 1) & (HH_DATA_MOD - 1)) + 1))
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#define HH_DATA_ALIGN(__len) \
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(((__len)+(HH_DATA_MOD-1))&~(HH_DATA_MOD - 1))
219
unsigned long hh_data[HH_DATA_ALIGN(LL_MAX_HEADER) / sizeof(long)];
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/* Reserve HH_DATA_MOD byte aligned hard_header_len, but at least that much.
224
* dev->hard_header_len ? (dev->hard_header_len +
225
* (HH_DATA_MOD - 1)) & ~(HH_DATA_MOD - 1) : 0
227
* We could use other alignment values, but we must maintain the
228
* relationship HH alignment <= LL alignment.
230
#define LL_RESERVED_SPACE(dev) \
231
(((dev)->hard_header_len&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
232
#define LL_RESERVED_SPACE_EXTRA(dev,extra) \
233
((((dev)->hard_header_len+extra)&~(HH_DATA_MOD - 1)) + HH_DATA_MOD)
235
/* These flag bits are private to the generic network queueing
236
* layer, they may not be explicitly referenced by any other
244
__LINK_STATE_PRESENT,
246
__LINK_STATE_NOCARRIER,
247
__LINK_STATE_RX_SCHED,
248
__LINK_STATE_LINKWATCH_PENDING,
249
__LINK_STATE_DORMANT,
250
__LINK_STATE_QDISC_RUNNING,
255
* This structure holds at boot time configured netdevice settings. They
256
* are then used in the device probing.
258
struct netdev_boot_setup {
262
#define NETDEV_BOOT_SETUP_MAX 8
264
extern int __init netdev_boot_setup(char *str);
267
* The DEVICE structure.
268
* Actually, this whole structure is a big mistake. It mixes I/O
269
* data with strictly "high-level" data, and it has to know about
270
* almost every data structure used in the INET module.
272
* FIXME: cleanup struct net_device such that network protocol info
280
* This is the first field of the "visible" part of this structure
281
* (i.e. as seen by users in the "Space.c" file). It is the name
285
/* device name hash chain */
286
struct hlist_node name_hlist;
289
* I/O specific fields
290
* FIXME: Merge these and struct ifmap into one
292
unsigned long mem_end; /* shared mem end */
293
unsigned long mem_start; /* shared mem start */
294
unsigned long base_addr; /* device I/O address */
295
unsigned int irq; /* device IRQ number */
298
* Some hardware also needs these fields, but they are not
299
* part of the usual set specified in Space.c.
302
unsigned char if_port; /* Selectable AUI, TP,..*/
303
unsigned char dma; /* DMA channel */
307
struct list_head dev_list;
309
/* The device initialization function. Called only once. */
310
int (*init)(struct net_device *dev);
312
/* ------- Fields preinitialized in Space.c finish here ------- */
314
/* Net device features */
315
unsigned long features;
316
#define NETIF_F_SG 1 /* Scatter/gather IO. */
317
#define NETIF_F_IP_CSUM 2 /* Can checksum only TCP/UDP over IPv4. */
318
#define NETIF_F_NO_CSUM 4 /* Does not require checksum. F.e. loopack. */
319
#define NETIF_F_HW_CSUM 8 /* Can checksum all the packets. */
320
#define NETIF_F_HIGHDMA 32 /* Can DMA to high memory. */
321
#define NETIF_F_FRAGLIST 64 /* Scatter/gather IO. */
322
#define NETIF_F_HW_VLAN_TX 128 /* Transmit VLAN hw acceleration */
323
#define NETIF_F_HW_VLAN_RX 256 /* Receive VLAN hw acceleration */
324
#define NETIF_F_HW_VLAN_FILTER 512 /* Receive filtering on VLAN */
325
#define NETIF_F_VLAN_CHALLENGED 1024 /* Device cannot handle VLAN packets */
326
#define NETIF_F_GSO 2048 /* Enable software GSO. */
327
#define NETIF_F_LLTX 4096 /* LockLess TX */
329
/* Segmentation offload features */
330
#define NETIF_F_GSO_SHIFT 16
331
#define NETIF_F_GSO_MASK 0xffff0000
332
#define NETIF_F_TSO (SKB_GSO_TCPV4 << NETIF_F_GSO_SHIFT)
333
#define NETIF_F_UFO (SKB_GSO_UDP << NETIF_F_GSO_SHIFT)
334
#define NETIF_F_GSO_ROBUST (SKB_GSO_DODGY << NETIF_F_GSO_SHIFT)
335
#define NETIF_F_TSO_ECN (SKB_GSO_TCP_ECN << NETIF_F_GSO_SHIFT)
336
#define NETIF_F_TSO6 (SKB_GSO_TCPV6 << NETIF_F_GSO_SHIFT)
338
/* List of features with software fallbacks. */
339
#define NETIF_F_GSO_SOFTWARE (NETIF_F_TSO | NETIF_F_TSO_ECN | NETIF_F_TSO6)
341
#define NETIF_F_GEN_CSUM (NETIF_F_NO_CSUM | NETIF_F_HW_CSUM)
342
#define NETIF_F_ALL_CSUM (NETIF_F_IP_CSUM | NETIF_F_GEN_CSUM)
344
struct net_device *next_sched;
346
/* Interface index. Unique device identifier */
351
struct net_device_stats* (*get_stats)(struct net_device *dev);
352
struct net_device_stats stats;
354
#ifdef CONFIG_WIRELESS_EXT
355
/* List of functions to handle Wireless Extensions (instead of ioctl).
356
* See <net/iw_handler.h> for details. Jean II */
357
const struct iw_handler_def * wireless_handlers;
358
/* Instance data managed by the core of Wireless Extensions. */
359
struct iw_public_data * wireless_data;
361
const struct ethtool_ops *ethtool_ops;
364
* This marks the end of the "visible" part of the structure. All
365
* fields hereafter are internal to the system, and may change at
366
* will (read: may be cleaned up at will).
370
unsigned int flags; /* interface flags (a la BSD) */
371
unsigned short gflags;
372
unsigned short priv_flags; /* Like 'flags' but invisible to userspace. */
373
unsigned short padded; /* How much padding added by alloc_netdev() */
375
unsigned char operstate; /* RFC2863 operstate */
376
unsigned char link_mode; /* mapping policy to operstate */
378
unsigned mtu; /* interface MTU value */
379
unsigned short type; /* interface hardware type */
380
unsigned short hard_header_len; /* hardware hdr length */
382
struct net_device *master; /* Pointer to master device of a group,
383
* which this device is member of.
386
/* Interface address info. */
387
unsigned char perm_addr[MAX_ADDR_LEN]; /* permanent hw address */
388
unsigned char addr_len; /* hardware address length */
389
unsigned short dev_id; /* for shared network cards */
391
struct dev_mc_list *mc_list; /* Multicast mac addresses */
392
int mc_count; /* Number of installed mcasts */
397
/* Protocol specific pointers */
399
void *atalk_ptr; /* AppleTalk link */
400
void *ip_ptr; /* IPv4 specific data */
401
void *dn_ptr; /* DECnet specific data */
402
void *ip6_ptr; /* IPv6 specific data */
403
void *ec_ptr; /* Econet specific data */
404
void *ax25_ptr; /* AX.25 specific data */
405
struct wireless_dev *ieee80211_ptr; /* IEEE 802.11 specific data,
406
assign before registering */
409
* Cache line mostly used on receive path (including eth_type_trans())
411
struct list_head poll_list ____cacheline_aligned_in_smp;
412
/* Link to poll list */
414
int (*poll) (struct net_device *dev, int *quota);
417
unsigned long last_rx; /* Time of last Rx */
418
/* Interface address info used in eth_type_trans() */
419
unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address, (before bcast
420
because most packets are unicast) */
422
unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
425
* Cache line mostly used on queue transmit path (qdisc)
427
/* device queue lock */
428
spinlock_t queue_lock ____cacheline_aligned_in_smp;
430
struct Qdisc *qdisc_sleeping;
431
struct list_head qdisc_list;
432
unsigned long tx_queue_len; /* Max frames per queue allowed */
434
/* Partially transmitted GSO packet. */
435
struct sk_buff *gso_skb;
437
/* ingress path synchronizer */
438
spinlock_t ingress_lock;
439
struct Qdisc *qdisc_ingress;
442
* One part is mostly used on xmit path (device)
444
/* hard_start_xmit synchronizer */
445
spinlock_t _xmit_lock ____cacheline_aligned_in_smp;
446
/* cpu id of processor entered to hard_start_xmit or -1,
447
if nobody entered there.
450
void *priv; /* pointer to private data */
451
int (*hard_start_xmit) (struct sk_buff *skb,
452
struct net_device *dev);
453
/* These may be needed for future network-power-down code. */
454
unsigned long trans_start; /* Time (in jiffies) of last Tx */
456
int watchdog_timeo; /* used by dev_watchdog() */
457
struct timer_list watchdog_timer;
460
* refcnt is a very hot point, so align it on SMP
462
/* Number of references to this device */
463
atomic_t refcnt ____cacheline_aligned_in_smp;
465
/* delayed register/unregister */
466
struct list_head todo_list;
467
/* device index hash chain */
468
struct hlist_node index_hlist;
470
struct net_device *link_watch_next;
472
/* register/unregister state machine */
473
enum { NETREG_UNINITIALIZED=0,
474
NETREG_REGISTERED, /* completed register_netdevice */
475
NETREG_UNREGISTERING, /* called unregister_netdevice */
476
NETREG_UNREGISTERED, /* completed unregister todo */
477
NETREG_RELEASED, /* called free_netdev */
480
/* Called after device is detached from network. */
481
void (*uninit)(struct net_device *dev);
482
/* Called after last user reference disappears. */
483
void (*destructor)(struct net_device *dev);
485
/* Pointers to interface service routines. */
486
int (*open)(struct net_device *dev);
487
int (*stop)(struct net_device *dev);
488
#define HAVE_NETDEV_POLL
489
int (*hard_header) (struct sk_buff *skb,
490
struct net_device *dev,
495
int (*rebuild_header)(struct sk_buff *skb);
496
#define HAVE_MULTICAST
497
void (*set_multicast_list)(struct net_device *dev);
498
#define HAVE_SET_MAC_ADDR
499
int (*set_mac_address)(struct net_device *dev,
501
#define HAVE_PRIVATE_IOCTL
502
int (*do_ioctl)(struct net_device *dev,
503
struct ifreq *ifr, int cmd);
504
#define HAVE_SET_CONFIG
505
int (*set_config)(struct net_device *dev,
507
#define HAVE_HEADER_CACHE
508
int (*hard_header_cache)(struct neighbour *neigh,
509
struct hh_cache *hh);
510
void (*header_cache_update)(struct hh_cache *hh,
511
struct net_device *dev,
512
unsigned char * haddr);
513
#define HAVE_CHANGE_MTU
514
int (*change_mtu)(struct net_device *dev, int new_mtu);
516
#define HAVE_TX_TIMEOUT
517
void (*tx_timeout) (struct net_device *dev);
519
void (*vlan_rx_register)(struct net_device *dev,
520
struct vlan_group *grp);
521
void (*vlan_rx_add_vid)(struct net_device *dev,
523
void (*vlan_rx_kill_vid)(struct net_device *dev,
526
int (*hard_header_parse)(struct sk_buff *skb,
527
unsigned char *haddr);
528
int (*neigh_setup)(struct net_device *dev, struct neigh_parms *);
529
#ifdef CONFIG_NETPOLL
530
struct netpoll_info *npinfo;
532
#ifdef CONFIG_NET_POLL_CONTROLLER
533
void (*poll_controller)(struct net_device *dev);
537
struct net_bridge_port *br_port;
539
/* class/net/name entry */
541
/* space for optional statistics and wireless sysfs groups */
542
struct attribute_group *sysfs_groups[3];
544
#define to_net_dev(d) container_of(d, struct net_device, dev)
546
#define NETDEV_ALIGN 32
547
#define NETDEV_ALIGN_CONST (NETDEV_ALIGN - 1)
549
static inline void *netdev_priv(struct net_device *dev)
551
return (char *)dev + ((sizeof(struct net_device)
552
+ NETDEV_ALIGN_CONST)
553
& ~NETDEV_ALIGN_CONST);
556
#define SET_MODULE_OWNER(dev) do { } while (0)
557
/* Set the sysfs physical device reference for the network logical device
558
* if set prior to registration will cause a symlink during initialization.
560
#define SET_NETDEV_DEV(net, pdev) ((net)->dev.parent = (pdev))
563
__be16 type; /* This is really htons(ether_type). */
564
struct net_device *dev; /* NULL is wildcarded here */
565
int (*func) (struct sk_buff *,
567
struct packet_type *,
568
struct net_device *);
569
struct sk_buff *(*gso_segment)(struct sk_buff *skb,
571
int (*gso_send_check)(struct sk_buff *skb);
572
void *af_packet_priv;
573
struct list_head list;
576
#include <linux/interrupt.h>
577
#include <linux/notifier.h>
579
extern struct net_device loopback_dev; /* The loopback */
580
extern struct list_head dev_base_head; /* All devices */
581
extern rwlock_t dev_base_lock; /* Device list lock */
583
#define for_each_netdev(d) \
584
list_for_each_entry(d, &dev_base_head, dev_list)
585
#define for_each_netdev_safe(d, n) \
586
list_for_each_entry_safe(d, n, &dev_base_head, dev_list)
587
#define for_each_netdev_continue(d) \
588
list_for_each_entry_continue(d, &dev_base_head, dev_list)
589
#define net_device_entry(lh) list_entry(lh, struct net_device, dev_list)
591
static inline struct net_device *next_net_device(struct net_device *dev)
593
struct list_head *lh;
595
lh = dev->dev_list.next;
596
return lh == &dev_base_head ? NULL : net_device_entry(lh);
599
static inline struct net_device *first_net_device(void)
601
return list_empty(&dev_base_head) ? NULL :
602
net_device_entry(dev_base_head.next);
605
extern int netdev_boot_setup_check(struct net_device *dev);
606
extern unsigned long netdev_boot_base(const char *prefix, int unit);
607
extern struct net_device *dev_getbyhwaddr(unsigned short type, char *hwaddr);
608
extern struct net_device *dev_getfirstbyhwtype(unsigned short type);
609
extern struct net_device *__dev_getfirstbyhwtype(unsigned short type);
610
extern void dev_add_pack(struct packet_type *pt);
611
extern void dev_remove_pack(struct packet_type *pt);
612
extern void __dev_remove_pack(struct packet_type *pt);
614
extern struct net_device *dev_get_by_flags(unsigned short flags,
615
unsigned short mask);
616
extern struct net_device *dev_get_by_name(const char *name);
617
extern struct net_device *__dev_get_by_name(const char *name);
618
extern int dev_alloc_name(struct net_device *dev, const char *name);
619
extern int dev_open(struct net_device *dev);
620
extern int dev_close(struct net_device *dev);
621
extern int dev_queue_xmit(struct sk_buff *skb);
622
extern int register_netdevice(struct net_device *dev);
623
extern void unregister_netdevice(struct net_device *dev);
624
extern void free_netdev(struct net_device *dev);
625
extern void synchronize_net(void);
626
extern int register_netdevice_notifier(struct notifier_block *nb);
627
extern int unregister_netdevice_notifier(struct notifier_block *nb);
628
extern int call_netdevice_notifiers(unsigned long val, void *v);
629
extern struct net_device *dev_get_by_index(int ifindex);
630
extern struct net_device *__dev_get_by_index(int ifindex);
631
extern int dev_restart(struct net_device *dev);
632
#ifdef CONFIG_NETPOLL_TRAP
633
extern int netpoll_trap(void);
636
typedef int gifconf_func_t(struct net_device * dev, char __user * bufptr, int len);
637
extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf);
638
static inline int unregister_gifconf(unsigned int family)
640
return register_gifconf(family, NULL);
644
* Incoming packets are placed on per-cpu queues so that
645
* no locking is needed.
650
struct net_device *output_queue;
651
struct sk_buff_head input_pkt_queue;
652
struct list_head poll_list;
653
struct sk_buff *completion_queue;
655
struct net_device backlog_dev; /* Sorry. 8) */
656
#ifdef CONFIG_NET_DMA
657
struct dma_chan *net_dma;
661
DECLARE_PER_CPU(struct softnet_data,softnet_data);
663
#define HAVE_NETIF_QUEUE
665
extern void __netif_schedule(struct net_device *dev);
667
static inline void netif_schedule(struct net_device *dev)
669
if (!test_bit(__LINK_STATE_XOFF, &dev->state))
670
__netif_schedule(dev);
673
static inline void netif_start_queue(struct net_device *dev)
675
clear_bit(__LINK_STATE_XOFF, &dev->state);
678
static inline void netif_wake_queue(struct net_device *dev)
680
#ifdef CONFIG_NETPOLL_TRAP
681
if (netpoll_trap()) {
682
clear_bit(__LINK_STATE_XOFF, &dev->state);
686
if (test_and_clear_bit(__LINK_STATE_XOFF, &dev->state))
687
__netif_schedule(dev);
690
static inline void netif_stop_queue(struct net_device *dev)
692
set_bit(__LINK_STATE_XOFF, &dev->state);
695
static inline int netif_queue_stopped(const struct net_device *dev)
697
return test_bit(__LINK_STATE_XOFF, &dev->state);
700
static inline int netif_running(const struct net_device *dev)
702
return test_bit(__LINK_STATE_START, &dev->state);
706
/* Use this variant when it is known for sure that it
707
* is executing from interrupt context.
709
static inline void dev_kfree_skb_irq(struct sk_buff *skb)
711
if (atomic_dec_and_test(&skb->users)) {
712
struct softnet_data *sd;
715
local_irq_save(flags);
716
sd = &__get_cpu_var(softnet_data);
717
skb->next = sd->completion_queue;
718
sd->completion_queue = skb;
719
raise_softirq_irqoff(NET_TX_SOFTIRQ);
720
local_irq_restore(flags);
724
/* Use this variant in places where it could be invoked
725
* either from interrupt or non-interrupt context.
727
extern void dev_kfree_skb_any(struct sk_buff *skb);
729
#define HAVE_NETIF_RX 1
730
extern int netif_rx(struct sk_buff *skb);
731
extern int netif_rx_ni(struct sk_buff *skb);
732
#define HAVE_NETIF_RECEIVE_SKB 1
733
extern int netif_receive_skb(struct sk_buff *skb);
734
extern int dev_valid_name(const char *name);
735
extern int dev_ioctl(unsigned int cmd, void __user *);
736
extern int dev_ethtool(struct ifreq *);
737
extern unsigned dev_get_flags(const struct net_device *);
738
extern int dev_change_flags(struct net_device *, unsigned);
739
extern int dev_change_name(struct net_device *, char *);
740
extern int dev_set_mtu(struct net_device *, int);
741
extern int dev_set_mac_address(struct net_device *,
743
extern int dev_hard_start_xmit(struct sk_buff *skb,
744
struct net_device *dev);
746
extern void dev_init(void);
748
extern int netdev_budget;
750
/* Called by rtnetlink.c:rtnl_unlock() */
751
extern void netdev_run_todo(void);
753
static inline void dev_put(struct net_device *dev)
755
atomic_dec(&dev->refcnt);
758
static inline void dev_hold(struct net_device *dev)
760
atomic_inc(&dev->refcnt);
763
/* Carrier loss detection, dial on demand. The functions netif_carrier_on
764
* and _off may be called from IRQ context, but it is caller
765
* who is responsible for serialization of these calls.
767
* The name carrier is inappropriate, these functions should really be
768
* called netif_lowerlayer_*() because they represent the state of any
769
* kind of lower layer not just hardware media.
772
extern void linkwatch_fire_event(struct net_device *dev);
774
static inline int netif_carrier_ok(const struct net_device *dev)
776
return !test_bit(__LINK_STATE_NOCARRIER, &dev->state);
779
extern void __netdev_watchdog_up(struct net_device *dev);
781
extern void netif_carrier_on(struct net_device *dev);
783
extern void netif_carrier_off(struct net_device *dev);
785
static inline void netif_dormant_on(struct net_device *dev)
787
if (!test_and_set_bit(__LINK_STATE_DORMANT, &dev->state))
788
linkwatch_fire_event(dev);
791
static inline void netif_dormant_off(struct net_device *dev)
793
if (test_and_clear_bit(__LINK_STATE_DORMANT, &dev->state))
794
linkwatch_fire_event(dev);
797
static inline int netif_dormant(const struct net_device *dev)
799
return test_bit(__LINK_STATE_DORMANT, &dev->state);
803
static inline int netif_oper_up(const struct net_device *dev) {
804
return (dev->operstate == IF_OPER_UP ||
805
dev->operstate == IF_OPER_UNKNOWN /* backward compat */);
809
static inline int netif_device_present(struct net_device *dev)
811
return test_bit(__LINK_STATE_PRESENT, &dev->state);
814
extern void netif_device_detach(struct net_device *dev);
816
extern void netif_device_attach(struct net_device *dev);
819
* Network interface message level settings
821
#define HAVE_NETIF_MSG 1
824
NETIF_MSG_DRV = 0x0001,
825
NETIF_MSG_PROBE = 0x0002,
826
NETIF_MSG_LINK = 0x0004,
827
NETIF_MSG_TIMER = 0x0008,
828
NETIF_MSG_IFDOWN = 0x0010,
829
NETIF_MSG_IFUP = 0x0020,
830
NETIF_MSG_RX_ERR = 0x0040,
831
NETIF_MSG_TX_ERR = 0x0080,
832
NETIF_MSG_TX_QUEUED = 0x0100,
833
NETIF_MSG_INTR = 0x0200,
834
NETIF_MSG_TX_DONE = 0x0400,
835
NETIF_MSG_RX_STATUS = 0x0800,
836
NETIF_MSG_PKTDATA = 0x1000,
837
NETIF_MSG_HW = 0x2000,
838
NETIF_MSG_WOL = 0x4000,
841
#define netif_msg_drv(p) ((p)->msg_enable & NETIF_MSG_DRV)
842
#define netif_msg_probe(p) ((p)->msg_enable & NETIF_MSG_PROBE)
843
#define netif_msg_link(p) ((p)->msg_enable & NETIF_MSG_LINK)
844
#define netif_msg_timer(p) ((p)->msg_enable & NETIF_MSG_TIMER)
845
#define netif_msg_ifdown(p) ((p)->msg_enable & NETIF_MSG_IFDOWN)
846
#define netif_msg_ifup(p) ((p)->msg_enable & NETIF_MSG_IFUP)
847
#define netif_msg_rx_err(p) ((p)->msg_enable & NETIF_MSG_RX_ERR)
848
#define netif_msg_tx_err(p) ((p)->msg_enable & NETIF_MSG_TX_ERR)
849
#define netif_msg_tx_queued(p) ((p)->msg_enable & NETIF_MSG_TX_QUEUED)
850
#define netif_msg_intr(p) ((p)->msg_enable & NETIF_MSG_INTR)
851
#define netif_msg_tx_done(p) ((p)->msg_enable & NETIF_MSG_TX_DONE)
852
#define netif_msg_rx_status(p) ((p)->msg_enable & NETIF_MSG_RX_STATUS)
853
#define netif_msg_pktdata(p) ((p)->msg_enable & NETIF_MSG_PKTDATA)
854
#define netif_msg_hw(p) ((p)->msg_enable & NETIF_MSG_HW)
855
#define netif_msg_wol(p) ((p)->msg_enable & NETIF_MSG_WOL)
857
static inline u32 netif_msg_init(int debug_value, int default_msg_enable_bits)
860
if (debug_value < 0 || debug_value >= (sizeof(u32) * 8))
861
return default_msg_enable_bits;
862
if (debug_value == 0) /* no output */
865
return (1 << debug_value) - 1;
868
/* Test if receive needs to be scheduled */
869
static inline int __netif_rx_schedule_prep(struct net_device *dev)
871
return !test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state);
874
/* Test if receive needs to be scheduled but only if up */
875
static inline int netif_rx_schedule_prep(struct net_device *dev)
877
return netif_running(dev) && __netif_rx_schedule_prep(dev);
880
/* Add interface to tail of rx poll list. This assumes that _prep has
881
* already been called and returned 1.
884
extern void __netif_rx_schedule(struct net_device *dev);
886
/* Try to reschedule poll. Called by irq handler. */
888
static inline void netif_rx_schedule(struct net_device *dev)
890
if (netif_rx_schedule_prep(dev))
891
__netif_rx_schedule(dev);
894
/* Try to reschedule poll. Called by dev->poll() after netif_rx_complete().
895
* Do not inline this?
897
static inline int netif_rx_reschedule(struct net_device *dev, int undo)
899
if (netif_rx_schedule_prep(dev)) {
904
local_irq_save(flags);
905
list_add_tail(&dev->poll_list, &__get_cpu_var(softnet_data).poll_list);
906
__raise_softirq_irqoff(NET_RX_SOFTIRQ);
907
local_irq_restore(flags);
913
/* same as netif_rx_complete, except that local_irq_save(flags)
914
* has already been issued
916
static inline void __netif_rx_complete(struct net_device *dev)
918
BUG_ON(!test_bit(__LINK_STATE_RX_SCHED, &dev->state));
919
list_del(&dev->poll_list);
920
smp_mb__before_clear_bit();
921
clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
924
/* Remove interface from poll list: it must be in the poll list
925
* on current cpu. This primitive is called by dev->poll(), when
926
* it completes the work. The device cannot be out of poll list at this
927
* moment, it is BUG().
929
static inline void netif_rx_complete(struct net_device *dev)
933
local_irq_save(flags);
934
__netif_rx_complete(dev);
935
local_irq_restore(flags);
938
static inline void netif_poll_disable(struct net_device *dev)
940
while (test_and_set_bit(__LINK_STATE_RX_SCHED, &dev->state))
942
schedule_timeout_interruptible(1);
945
static inline void netif_poll_enable(struct net_device *dev)
947
smp_mb__before_clear_bit();
948
clear_bit(__LINK_STATE_RX_SCHED, &dev->state);
951
static inline void netif_tx_lock(struct net_device *dev)
953
spin_lock(&dev->_xmit_lock);
954
dev->xmit_lock_owner = smp_processor_id();
957
static inline void netif_tx_lock_bh(struct net_device *dev)
959
spin_lock_bh(&dev->_xmit_lock);
960
dev->xmit_lock_owner = smp_processor_id();
963
static inline int netif_tx_trylock(struct net_device *dev)
965
int ok = spin_trylock(&dev->_xmit_lock);
967
dev->xmit_lock_owner = smp_processor_id();
971
static inline void netif_tx_unlock(struct net_device *dev)
973
dev->xmit_lock_owner = -1;
974
spin_unlock(&dev->_xmit_lock);
977
static inline void netif_tx_unlock_bh(struct net_device *dev)
979
dev->xmit_lock_owner = -1;
980
spin_unlock_bh(&dev->_xmit_lock);
983
static inline void netif_tx_disable(struct net_device *dev)
985
netif_tx_lock_bh(dev);
986
netif_stop_queue(dev);
987
netif_tx_unlock_bh(dev);
990
/* These functions live elsewhere (drivers/net/net_init.c, but related) */
992
extern void ether_setup(struct net_device *dev);
994
/* Support for loadable net-drivers */
995
extern struct net_device *alloc_netdev(int sizeof_priv, const char *name,
996
void (*setup)(struct net_device *));
997
extern int register_netdev(struct net_device *dev);
998
extern void unregister_netdev(struct net_device *dev);
999
/* Functions used for multicast support */
1000
extern void dev_mc_upload(struct net_device *dev);
1001
extern int dev_mc_delete(struct net_device *dev, void *addr, int alen, int all);
1002
extern int dev_mc_add(struct net_device *dev, void *addr, int alen, int newonly);
1003
extern void dev_mc_discard(struct net_device *dev);
1004
extern void dev_set_promiscuity(struct net_device *dev, int inc);
1005
extern void dev_set_allmulti(struct net_device *dev, int inc);
1006
extern void netdev_state_change(struct net_device *dev);
1007
extern void netdev_features_change(struct net_device *dev);
1008
/* Load a device via the kmod */
1009
extern void dev_load(const char *name);
1010
extern void dev_mcast_init(void);
1011
extern int netdev_max_backlog;
1012
extern int weight_p;
1013
extern int netdev_set_master(struct net_device *dev, struct net_device *master);
1014
extern int skb_checksum_help(struct sk_buff *skb);
1015
extern struct sk_buff *skb_gso_segment(struct sk_buff *skb, int features);
1017
extern void netdev_rx_csum_fault(struct net_device *dev);
1019
static inline void netdev_rx_csum_fault(struct net_device *dev)
1023
/* rx skb timestamps */
1024
extern void net_enable_timestamp(void);
1025
extern void net_disable_timestamp(void);
1027
#ifdef CONFIG_PROC_FS
1028
extern void *dev_seq_start(struct seq_file *seq, loff_t *pos);
1029
extern void *dev_seq_next(struct seq_file *seq, void *v, loff_t *pos);
1030
extern void dev_seq_stop(struct seq_file *seq, void *v);
1033
extern void linkwatch_run_queue(void);
1035
static inline int net_gso_ok(int features, int gso_type)
1037
int feature = gso_type << NETIF_F_GSO_SHIFT;
1038
return (features & feature) == feature;
1041
static inline int skb_gso_ok(struct sk_buff *skb, int features)
1043
return net_gso_ok(features, skb_shinfo(skb)->gso_type);
1046
static inline int netif_needs_gso(struct net_device *dev, struct sk_buff *skb)
1048
return skb_is_gso(skb) &&
1049
(!skb_gso_ok(skb, dev->features) ||
1050
unlikely(skb->ip_summed != CHECKSUM_PARTIAL));
1053
/* On bonding slaves other than the currently active slave, suppress
1054
* duplicates except for 802.3ad ETH_P_SLOW, alb non-mcast/bcast, and
1055
* ARP on active-backup slaves with arp_validate enabled.
1057
static inline int skb_bond_should_drop(struct sk_buff *skb)
1059
struct net_device *dev = skb->dev;
1060
struct net_device *master = dev->master;
1063
(dev->priv_flags & IFF_SLAVE_INACTIVE)) {
1064
if ((dev->priv_flags & IFF_SLAVE_NEEDARP) &&
1065
skb->protocol == __constant_htons(ETH_P_ARP))
1068
if (master->priv_flags & IFF_MASTER_ALB) {
1069
if (skb->pkt_type != PACKET_BROADCAST &&
1070
skb->pkt_type != PACKET_MULTICAST)
1073
if (master->priv_flags & IFF_MASTER_8023AD &&
1074
skb->protocol == __constant_htons(ETH_P_SLOW))
1082
#endif /* __KERNEL__ */
1084
#endif /* _LINUX_DEV_H */
added
removed
linux/include/linux/netdevice.h
