/* * 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, * Fred N. van Kempen, * Corey Minyard * Donald J. Becker, * * 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. */ #ifndef _DEV_H #define _DEV_H #include #include /* for future expansion when we will have different priorities. */ #define DEV_NUMBUFFS 3 #define MAX_ADDR_LEN 7 #define MAX_HEADER 18 #define IS_MYADDR 1 /* address is (one of) our own */ #define IS_LOOPBACK 2 /* address is for LOOPBACK */ #define IS_BROADCAST 3 /* address is a valid broadcast */ #define IS_INVBCAST 4 /* Wrong netmask bcast not for us */ /* * 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. We will * gradually phase out this structure, and replace it with the * more general (but stolen :-) BSD "ifnet" structure. -FvK */ 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. These will be moved to DDI soon. */ unsigned long rmem_end; /* shmem "recv" end */ unsigned long rmem_start; /* shmem "recv" start */ unsigned long mem_end; /* sahared mem end */ unsigned long mem_start; /* shared mem start */ unsigned short base_addr; /* device I/O address */ unsigned char irq; /* device IRQ number */ /* Low-level status flags. */ volatile unsigned char start, /* start an operation */ tbusy, /* transmitter busy */ interrupt; /* interrupt arrived */ /* * Another mistake. * This points to the next device in the "dev" chain. It will * be moved to the "invisible" part of the structure as soon as * it has been cleaned up. -FvK */ struct device *next; /* The device initialization function. Called only once. */ int (*init)(struct device *dev); /* 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 enet_statistics* (*get_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 family; /* address family ID (AF_INET) */ unsigned short metric; /* routing metric (not used) */ unsigned short 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 dev_addr[MAX_ADDR_LEN]; /* hw address */ unsigned char addr_len; /* harfware address length */ unsigned long pa_addr; /* protocol address */ unsigned long pa_brdaddr; /* protocol broadcast addr */ unsigned long pa_dstaddr; /* protocol P-P other side addr */ unsigned long pa_mask; /* protocol netmask */ unsigned short pa_alen; /* protocol address length */ /* Pointer to the interface buffers. */ struct sk_buff *volatile buffs[DEV_NUMBUFFS]; /* 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) (unsigned char *buff, struct device *dev, unsigned short type, unsigned long daddr, unsigned long saddr, unsigned len); void (*add_arp) (unsigned long addr, struct sk_buff *skb, struct device *dev); void (*queue_xmit)(struct sk_buff *skb, struct device *dev, int pri); int (*rebuild_header)(void *eth, struct device *dev); unsigned short (*type_trans) (struct sk_buff *skb, struct device *dev); #define HAVE_MULTICAST void (*set_multicast_list)(struct device *dev, int num_addrs, void *addrs); #define HAVE_SET_MAC_ADDR int (*set_mac_address)(struct device *dev, void *addr); }; struct packet_type { unsigned short type; /* This is really NET16(ether_type) other * devices will have to translate * appropriately. */ unsigned short copy:1; int (*func) (struct sk_buff *, struct device *, struct packet_type *); void *data; struct packet_type *next; }; /* Used by dev_rint */ #define IN_SKBUFF 1 #define DEV_QUEUE_MAGIC 0x17432895 extern struct device *dev_base; extern struct packet_type *ptype_base; extern int ip_addr_match(unsigned long addr1, unsigned long addr2); extern int chk_addr(unsigned long addr); extern struct device *dev_check(unsigned long daddr); extern unsigned long my_addr(void); extern void dev_add_pack(struct packet_type *pt); extern void dev_remove_pack(struct packet_type *pt); extern struct device *dev_get(char *name); extern int dev_open(struct device *dev); extern int dev_close(struct device *dev); extern void dev_queue_xmit(struct sk_buff *skb, struct device *dev, int pri); #define HAVE_NETIF_RX 1 extern void netif_rx(struct sk_buff *skb); /* The old interface to netif_rx(). */ extern int dev_rint(unsigned char *buff, long len, int flags, struct device * dev); extern void dev_transmit(void); extern int in_inet_bh(void); extern void inet_bh(void *tmp); extern void dev_tint(struct device *dev); extern int dev_get_info(char *buffer); extern int dev_ioctl(unsigned int cmd, void *); extern void dev_init(void); #endif /* _DEV_H */