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Diffstat (limited to 'pfinet/linux-src/include/linux/netdevice.h')
| -rw-r--r-- | pfinet/linux-src/include/linux/netdevice.h | 461 |
1 files changed, 461 insertions, 0 deletions
diff --git a/pfinet/linux-src/include/linux/netdevice.h b/pfinet/linux-src/include/linux/netdevice.h new file mode 100644 index 00000000..6d43f98d --- /dev/null +++ b/pfinet/linux-src/include/linux/netdevice.h @@ -0,0 +1,461 @@ +/* + * INET An implementation of the TCP/IP protocol suite for the LINUX + * operating system. INET is implemented using the BSD Socket + * interface as the means of communication with the user level. + * + * Definitions for the Interfaces handler. + * + * Version: @(#)dev.h 1.0.10 08/12/93 + * + * Authors: Ross Biro, <bir7@leland.Stanford.Edu> + * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG> + * Corey Minyard <wf-rch!minyard@relay.EU.net> + * Donald J. Becker, <becker@cesdis.gsfc.nasa.gov> + * Alan Cox, <Alan.Cox@linux.org> + * Bjorn Ekwall. <bj0rn@blox.se> + * + * This program is free software; you can redistribute it and/or + * modify it under the terms of the GNU General Public License + * as published by the Free Software Foundation; either version + * 2 of the License, or (at your option) any later version. + * + * Moved to /usr/include/linux for NET3 + */ +#ifndef _LINUX_NETDEVICE_H +#define _LINUX_NETDEVICE_H + +#include <linux/config.h> +#include <linux/if.h> +#include <linux/if_ether.h> +#include <linux/if_packet.h> + +#include <asm/atomic.h> + +#ifdef __KERNEL__ +#ifdef CONFIG_NET_PROFILE +#include <net/profile.h> +#endif +#endif + +/* + * For future expansion when we will have different priorities. + */ + +#define MAX_ADDR_LEN 7 /* Largest hardware address length */ + +/* + * Compute the worst case header length according to the protocols + * used. + */ + +#if !defined(CONFIG_AX25) && !defined(CONFIG_AX25_MODULE) && !defined(CONFIG_TR) +#define LL_MAX_HEADER 32 +#else +#if defined(CONFIG_AX25) || defined(CONFIG_AX25_MODULE) +#define LL_MAX_HEADER 96 +#else +#define LL_MAX_HEADER 48 +#endif +#endif + +#if !defined(CONFIG_NET_IPIP) && \ + !defined(CONFIG_IPV6) && !defined(CONFIG_IPV6_MODULE) +#define MAX_HEADER LL_MAX_HEADER +#else +#define MAX_HEADER (LL_MAX_HEADER + 48) +#endif + +/* + * Network device statistics. Akin to the 2.0 ether stats but + * with byte counters. + */ + +struct net_device_stats +{ + unsigned long rx_packets; /* total packets received */ + unsigned long tx_packets; /* total packets transmitted */ + unsigned long rx_bytes; /* total bytes received */ + unsigned long tx_bytes; /* total bytes transmitted */ + unsigned long rx_errors; /* bad packets received */ + unsigned long tx_errors; /* packet transmit problems */ + unsigned long rx_dropped; /* no space in linux buffers */ + unsigned long tx_dropped; /* no space available in linux */ + unsigned long multicast; /* multicast packets received */ + unsigned long collisions; + + /* detailed rx_errors: */ + unsigned long rx_length_errors; + unsigned long rx_over_errors; /* receiver ring buff overflow */ + unsigned long rx_crc_errors; /* recved pkt with crc error */ + unsigned long rx_frame_errors; /* recv'd frame alignment error */ + unsigned long rx_fifo_errors; /* recv'r fifo overrun */ + unsigned long rx_missed_errors; /* receiver missed packet */ + + /* detailed tx_errors */ + unsigned long tx_aborted_errors; + unsigned long tx_carrier_errors; + unsigned long tx_fifo_errors; + unsigned long tx_heartbeat_errors; + unsigned long tx_window_errors; + + /* for cslip etc */ + unsigned long rx_compressed; + unsigned long tx_compressed; +}; + +#ifdef CONFIG_NET_FASTROUTE +struct net_fastroute_stats +{ + int hits; + int succeed; + int deferred; + int latency_reduction; +}; +#endif + +/* Media selection options. */ +enum { + IF_PORT_UNKNOWN = 0, + IF_PORT_10BASE2, + IF_PORT_10BASET, + IF_PORT_AUI, + IF_PORT_100BASET, + IF_PORT_100BASETX, + IF_PORT_100BASEFX +}; + +#ifdef __KERNEL__ + +extern const char *if_port_text[]; + +#include <linux/skbuff.h> + +struct neighbour; +struct neigh_parms; +struct sk_buff; + +/* + * We tag multicasts with these structures. + */ + +struct dev_mc_list +{ + struct dev_mc_list *next; + __u8 dmi_addr[MAX_ADDR_LEN]; + unsigned char dmi_addrlen; + int dmi_users; + int dmi_gusers; +}; + +struct hh_cache +{ + struct hh_cache *hh_next; /* Next entry */ + atomic_t hh_refcnt; /* number of users */ + unsigned short hh_type; /* protocol identifier, f.e ETH_P_IP */ + int (*hh_output)(struct sk_buff *skb); + rwlock_t hh_lock; + /* cached hardware header; allow for machine alignment needs. */ + unsigned long hh_data[16/sizeof(unsigned long)]; +}; + + +/* + * The DEVICE structure. + * Actually, this whole structure is a big mistake. It mixes I/O + * data with strictly "high-level" data, and it has to know about + * almost every data structure used in the INET module. + * + * FIXME: cleanup struct device such that network protocol info + * moves out. + */ + +struct device +{ + + /* + * This is the first field of the "visible" part of this structure + * (i.e. as seen by users in the "Space.c" file). It is the name + * the interface. + */ + char *name; + + /* + * I/O specific fields + * FIXME: Merge these and struct ifmap into one + */ + unsigned long rmem_end; /* shmem "recv" end */ + unsigned long rmem_start; /* shmem "recv" start */ + unsigned long mem_end; /* shared mem end */ + unsigned long mem_start; /* shared mem start */ + unsigned long base_addr; /* device I/O address */ + unsigned int irq; /* device IRQ number */ + + /* Low-level status flags. */ + volatile unsigned char start; /* start an operation */ + /* + * These two are just single-bit flags, but due to atomicity + * reasons they have to be inside a "unsigned long". However, + * they should be inside the SAME unsigned long instead of + * this wasteful use of memory.. + */ + unsigned long interrupt; /* bitops.. */ + unsigned long tbusy; /* transmitter busy */ + + struct device *next; + + /* The device initialization function. Called only once. */ + int (*init)(struct device *dev); + void (*destructor)(struct device *dev); + + /* Interface index. Unique device identifier */ + int ifindex; + int iflink; + + /* + * Some hardware also needs these fields, but they are not + * part of the usual set specified in Space.c. + */ + + unsigned char if_port; /* Selectable AUI, TP,..*/ + unsigned char dma; /* DMA channel */ + + struct net_device_stats* (*get_stats)(struct device *dev); + struct iw_statistics* (*get_wireless_stats)(struct device *dev); + + /* + * This marks the end of the "visible" part of the structure. All + * fields hereafter are internal to the system, and may change at + * will (read: may be cleaned up at will). + */ + + /* These may be needed for future network-power-down code. */ + unsigned long trans_start; /* Time (in jiffies) of last Tx */ + unsigned long last_rx; /* Time of last Rx */ + + unsigned short flags; /* interface flags (a la BSD) */ + unsigned short gflags; + unsigned mtu; /* interface MTU value */ + unsigned short type; /* interface hardware type */ + unsigned short hard_header_len; /* hardware hdr length */ + void *priv; /* pointer to private data */ + + /* Interface address info. */ + unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */ + unsigned char pad; /* make dev_addr aligned to 8 bytes */ + unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address */ + unsigned char addr_len; /* hardware address length */ + + struct dev_mc_list *mc_list; /* Multicast mac addresses */ + int mc_count; /* Number of installed mcasts */ + int promiscuity; + int allmulti; + + /* For load balancing driver pair support */ + + unsigned long pkt_queue; /* Packets queued */ + struct device *slave; /* Slave device */ + + /* Protocol specific pointers */ + + void *atalk_ptr; /* AppleTalk link */ + void *ip_ptr; /* IPv4 specific data */ + void *dn_ptr; /* DECnet specific data */ + + struct Qdisc *qdisc; + struct Qdisc *qdisc_sleeping; + struct Qdisc *qdisc_list; + unsigned long tx_queue_len; /* Max frames per queue allowed */ + + /* Pointers to interface service routines. */ + int (*open)(struct device *dev); + int (*stop)(struct device *dev); + int (*hard_start_xmit) (struct sk_buff *skb, + struct device *dev); + int (*hard_header) (struct sk_buff *skb, + struct device *dev, + unsigned short type, + void *daddr, + void *saddr, + unsigned len); + int (*rebuild_header)(struct sk_buff *skb); +#define HAVE_MULTICAST + void (*set_multicast_list)(struct device *dev); +#define HAVE_SET_MAC_ADDR + int (*set_mac_address)(struct device *dev, + void *addr); +#define HAVE_PRIVATE_IOCTL + int (*do_ioctl)(struct device *dev, + struct ifreq *ifr, int cmd); +#define HAVE_SET_CONFIG + int (*set_config)(struct device *dev, + struct ifmap *map); +#define HAVE_HEADER_CACHE + int (*hard_header_cache)(struct neighbour *neigh, + struct hh_cache *hh); + void (*header_cache_update)(struct hh_cache *hh, + struct device *dev, + unsigned char * haddr); +#define HAVE_CHANGE_MTU + int (*change_mtu)(struct device *dev, int new_mtu); + + int (*hard_header_parse)(struct sk_buff *skb, + unsigned char *haddr); + int (*neigh_setup)(struct device *dev, struct neigh_parms *); + int (*accept_fastpath)(struct device *, struct dst_entry*); + +#ifdef CONFIG_NET_FASTROUTE + /* Really, this semaphore may be necessary and for not fastroute code; + f.e. SMP?? + */ + int tx_semaphore; +#define NETDEV_FASTROUTE_HMASK 0xF + /* Semi-private data. Keep it at the end of device struct. */ + struct dst_entry *fastpath[NETDEV_FASTROUTE_HMASK+1]; +#endif +}; + + +struct packet_type +{ + unsigned short type; /* This is really htons(ether_type). */ + struct device *dev; /* NULL is wildcarded here */ + int (*func) (struct sk_buff *, struct device *, + struct packet_type *); + void *data; /* Private to the packet type */ + struct packet_type *next; +}; + + +#include <linux/interrupt.h> +#include <linux/notifier.h> + +extern struct device loopback_dev; /* The loopback */ +extern struct device *dev_base; /* All devices */ +extern struct packet_type *ptype_base[16]; /* Hashed types */ +extern int netdev_dropping; +extern int net_cpu_congestion; + +extern struct device *dev_getbyhwaddr(unsigned short type, char *hwaddr); +extern void dev_add_pack(struct packet_type *pt); +extern void dev_remove_pack(struct packet_type *pt); +extern struct device *dev_get(const char *name); +extern struct device *dev_alloc(const char *name, int *err); +extern int dev_alloc_name(struct device *dev, const char *name); +extern int dev_open(struct device *dev); +extern int dev_close(struct device *dev); +extern int dev_queue_xmit(struct sk_buff *skb); +extern void dev_loopback_xmit(struct sk_buff *skb); +extern int register_netdevice(struct device *dev); +extern int unregister_netdevice(struct device *dev); +extern int register_netdevice_notifier(struct notifier_block *nb); +extern int unregister_netdevice_notifier(struct notifier_block *nb); +extern int dev_new_index(void); +extern struct device *dev_get_by_index(int ifindex); +extern int dev_restart(struct device *dev); + +typedef int gifconf_func_t(struct device * dev, char * bufptr, int len); +extern int register_gifconf(unsigned int family, gifconf_func_t * gifconf); +extern __inline__ int unregister_gifconf(unsigned int family) +{ + return register_gifconf(family, 0); +} + +#define HAVE_NETIF_RX 1 +extern void netif_rx(struct sk_buff *skb); +extern void net_bh(void); +extern int dev_get_info(char *buffer, char **start, off_t offset, int length, int dummy); +extern int dev_ioctl(unsigned int cmd, void *); +extern int dev_change_flags(struct device *, unsigned); +extern void dev_queue_xmit_nit(struct sk_buff *skb, struct device *dev); + +extern void dev_init(void); + +extern int netdev_nit; + +/* Locking protection for page faults during outputs to devices unloaded during the fault */ + +extern atomic_t dev_lockct; + +/* + * These two don't currently need to be atomic + * but they may do soon. Do it properly anyway. + */ + +extern __inline__ void dev_lock_list(void) +{ + atomic_inc(&dev_lockct); +} + +extern __inline__ void dev_unlock_list(void) +{ + atomic_dec(&dev_lockct); +} + +/* + * This almost never occurs, isn't in performance critical paths + * and we can thus be relaxed about it. + * + * FIXME: What if this is being run as a real time process ?? + * Linus: We need a way to force a yield here ? + * + * FIXME: Though dev_lockct is atomic varible, locking procedure + * is not atomic. + */ + +extern __inline__ void dev_lock_wait(void) +{ + while (atomic_read(&dev_lockct)) { + current->policy |= SCHED_YIELD; + schedule(); + } +} + +extern __inline__ void dev_init_buffers(struct device *dev) +{ + /* DO NOTHING */ +} + +/* These functions live elsewhere (drivers/net/net_init.c, but related) */ + +extern void ether_setup(struct device *dev); +extern void fddi_setup(struct device *dev); +extern void tr_setup(struct device *dev); +extern void fc_setup(struct device *dev); +extern void tr_freedev(struct device *dev); +extern void fc_freedev(struct device *dev); +extern int ether_config(struct device *dev, struct ifmap *map); +/* Support for loadable net-drivers */ +extern int register_netdev(struct device *dev); +extern void unregister_netdev(struct device *dev); +extern int register_trdev(struct device *dev); +extern void unregister_trdev(struct device *dev); +extern int register_fcdev(struct device *dev); +extern void unregister_fcdev(struct device *dev); +/* Functions used for multicast support */ +extern void dev_mc_upload(struct device *dev); +extern int dev_mc_delete(struct device *dev, void *addr, int alen, int all); +extern int dev_mc_add(struct device *dev, void *addr, int alen, int newonly); +extern void dev_mc_discard(struct device *dev); +extern void dev_set_promiscuity(struct device *dev, int inc); +extern void dev_set_allmulti(struct device *dev, int inc); +extern void netdev_state_change(struct device *dev); +/* Load a device via the kmod */ +extern void dev_load(const char *name); +extern void dev_mcast_init(void); +extern int netdev_register_fc(struct device *dev, void (*stimul)(struct device *dev)); +extern void netdev_unregister_fc(int bit); +extern int netdev_dropping; +extern int netdev_max_backlog; +extern atomic_t netdev_rx_dropped; +extern unsigned long netdev_fc_xoff; +#ifdef CONFIG_NET_FASTROUTE +extern int netdev_fastroute; +extern int netdev_fastroute_obstacles; +extern void dev_clear_fastroute(struct device *dev); +extern struct net_fastroute_stats dev_fastroute_stat; +#endif + + +#endif /* __KERNEL__ */ + +#endif /* _LINUX_DEV_H */ |