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jcastillo |
/*
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* INET An implementation of the TCP/IP protocol suite for the LINUX
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* operating system. INET is implemented using the BSD Socket
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* interface as the means of communication with the user level.
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*
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* Definitions for the Interfaces handler.
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*
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* Version: @(#)dev.h 1.0.11 07/31/96
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*
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* Authors: Ross Biro, <bir7@leland.Stanford.Edu>
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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@super.org>
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* Alan Cox, <A.Cox@swansea.ac.uk>
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* Bjorn Ekwall. <bj0rn@blox.se>
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* Lawrence V. Stefani, <stefani@lkg.dec.com>
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*
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* This program is free software; you can redistribute it and/or
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* 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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*
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* Moved to /usr/include/linux for NET3
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* Added extern for fddi_setup()
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*/
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#ifndef _LINUX_NETDEVICE_H
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#define _LINUX_NETDEVICE_H
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#include <linux/config.h>
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#include <linux/if.h>
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#include <linux/if_ether.h>
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/* for future expansion when we will have different priorities. */
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#define DEV_NUMBUFFS 3
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#define MAX_ADDR_LEN 7
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#ifndef CONFIG_AX25
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#ifndef CONFIG_AX25_MODULE
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#ifndef CONFIG_TR
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#if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE)
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#define MAX_HEADER 32 /* We really need about 18 worst case .. so 32 is aligned */
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#else
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#define MAX_HEADER 80 /* We need to allow for having tunnel headers */
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#endif /* IPIP */
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#else
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#define MAX_HEADER 48 /* Token Ring header needs 40 bytes ... 48 is aligned */
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#endif /* TR */
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#else
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#define MAX_HEADER 96 /* AX.25 + NET/ROM module*/
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#endif /* AX.25 module */
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#else
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#define MAX_HEADER 96 /* AX.25 + NET/ROM */
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#endif /* AX.25 */
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#define IS_MYADDR 1 /* address is (one of) our own */
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#define IS_LOOPBACK 2 /* address is for LOOPBACK */
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#define IS_BROADCAST 3 /* address is a valid broadcast */
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#define IS_INVBCAST 4 /* Wrong netmask bcast not for us (unused)*/
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#define IS_MULTICAST 5 /* Multicast IP address */
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#ifdef __KERNEL__
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#include <linux/skbuff.h>
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/*
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* We tag multicasts with these structures.
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*/
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struct dev_mc_list
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{
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struct dev_mc_list *next;
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char dmi_addr[MAX_ADDR_LEN];
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unsigned short dmi_addrlen;
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unsigned short dmi_users;
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};
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struct hh_cache
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{
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struct hh_cache *hh_next;
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void *hh_arp; /* Opaque pointer, used by
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* any address resolution module,
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* not only ARP.
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*/
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int hh_refcnt; /* number of users */
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unsigned short hh_type; /* protocol identifier, f.e ETH_P_IP */
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char hh_uptodate; /* hh_data is valid */
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char hh_data[16]; /* cached hardware header */
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};
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/*
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* The DEVICE structure.
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* Actually, this whole structure is a big mistake. It mixes I/O
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* data with strictly "high-level" data, and it has to know about
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* almost every data structure used in the INET module.
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*/
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struct device
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{
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/*
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* This is the first field of the "visible" part of this structure
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* (i.e. as seen by users in the "Space.c" file). It is the name
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* the interface.
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*/
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char *name;
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/* I/O specific fields - FIXME: Merge these and struct ifmap into one */
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unsigned long rmem_end; /* shmem "recv" end */
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unsigned long rmem_start; /* shmem "recv" start */
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unsigned long mem_end; /* shared mem end */
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unsigned long mem_start; /* shared mem start */
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unsigned long base_addr; /* device I/O address */
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unsigned char irq; /* device IRQ number */
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/* Low-level status flags. */
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volatile unsigned char start, /* start an operation */
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interrupt; /* interrupt arrived */
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unsigned long tbusy; /* transmitter busy must be long for bitops */
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struct device *next;
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/* The device initialization function. Called only once. */
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int (*init)(struct device *dev);
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/* Some hardware also needs these fields, but they are not part of the
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usual set specified in Space.c. */
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unsigned char if_port; /* Selectable AUI, TP,..*/
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unsigned char dma; /* DMA channel */
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struct enet_statistics* (*get_stats)(struct device *dev);
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/*
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* This marks the end of the "visible" part of the structure. All
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* fields hereafter are internal to the system, and may change at
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* will (read: may be cleaned up at will).
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*/
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/* These may be needed for future network-power-down code. */
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unsigned long trans_start; /* Time (in jiffies) of last Tx */
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unsigned long last_rx; /* Time of last Rx */
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unsigned short flags; /* interface flags (a la BSD) */
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unsigned short family; /* address family ID (AF_INET) */
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unsigned short metric; /* routing metric (not used) */
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unsigned short mtu; /* interface MTU value */
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unsigned short type; /* interface hardware type */
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unsigned short hard_header_len; /* hardware hdr length */
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void *priv; /* pointer to private data */
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/* Interface address info. */
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unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
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unsigned char pad; /* make dev_addr aligned to 8 bytes */
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unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address */
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unsigned char addr_len; /* hardware address length */
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unsigned long pa_addr; /* protocol address */
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unsigned long pa_brdaddr; /* protocol broadcast addr */
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unsigned long pa_dstaddr; /* protocol P-P other side addr */
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unsigned long pa_mask; /* protocol netmask */
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unsigned short pa_alen; /* protocol address length */
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struct dev_mc_list *mc_list; /* Multicast mac addresses */
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int mc_count; /* Number of installed mcasts */
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struct ip_mc_list *ip_mc_list; /* IP multicast filter chain */
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__u32 tx_queue_len; /* Max frames per queue allowed */
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/* For load balancing driver pair support */
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unsigned long pkt_queue; /* Packets queued */
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struct device *slave; /* Slave device */
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struct net_alias_info *alias_info; /* main dev alias info */
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struct net_alias *my_alias; /* alias devs */
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/* Pointer to the interface buffers. */
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struct sk_buff_head buffs[DEV_NUMBUFFS];
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/* Pointers to interface service routines. */
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int (*open)(struct device *dev);
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int (*stop)(struct device *dev);
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int (*hard_start_xmit) (struct sk_buff *skb,
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struct device *dev);
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int (*hard_header) (struct sk_buff *skb,
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struct device *dev,
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unsigned short type,
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void *daddr,
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void *saddr,
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unsigned len);
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int (*rebuild_header)(void *eth, struct device *dev,
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unsigned long raddr, struct sk_buff *skb);
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#define HAVE_MULTICAST
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void (*set_multicast_list)(struct device *dev);
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#define HAVE_SET_MAC_ADDR
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int (*set_mac_address)(struct device *dev, void *addr);
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#define HAVE_PRIVATE_IOCTL
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int (*do_ioctl)(struct device *dev, struct ifreq *ifr, int cmd);
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#define HAVE_SET_CONFIG
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int (*set_config)(struct device *dev, struct ifmap *map);
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#define HAVE_HEADER_CACHE
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void (*header_cache_bind)(struct hh_cache **hhp, struct device *dev, unsigned short htype, __u32 daddr);
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void (*header_cache_update)(struct hh_cache *hh, struct device *dev, unsigned char * haddr);
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#define HAVE_CHANGE_MTU
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int (*change_mtu)(struct device *dev, int new_mtu);
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struct iw_statistics* (*get_wireless_stats)(struct device *dev);
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};
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struct packet_type {
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unsigned short type; /* This is really htons(ether_type). */
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struct device * dev;
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int (*func) (struct sk_buff *, struct device *,
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struct packet_type *);
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void *data;
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struct packet_type *next;
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};
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#include <linux/interrupt.h>
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#include <linux/notifier.h>
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/* Used by dev_rint */
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#define IN_SKBUFF 1
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extern volatile unsigned long in_bh;
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extern struct device loopback_dev;
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extern struct device *dev_base;
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extern struct packet_type *ptype_base[16];
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extern int ip_addr_match(unsigned long addr1, unsigned long addr2);
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extern int ip_chk_addr(unsigned long addr);
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extern struct device *ip_dev_bynet(unsigned long daddr, unsigned long mask);
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extern unsigned long ip_my_addr(void);
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extern unsigned long ip_get_mask(unsigned long addr);
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extern struct device *ip_dev_find(unsigned long addr);
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extern struct device *dev_getbytype(unsigned short type);
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extern void dev_add_pack(struct packet_type *pt);
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extern void dev_remove_pack(struct packet_type *pt);
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extern struct device *dev_get(const char *name);
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extern int dev_open(struct device *dev);
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extern int dev_close(struct device *dev);
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extern void dev_queue_xmit(struct sk_buff *skb, struct device *dev,
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int pri);
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#define HAVE_NETIF_RX 1
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extern void netif_rx(struct sk_buff *skb);
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extern void net_bh(void);
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extern void dev_tint(struct device *dev);
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extern int dev_get_info(char *buffer, char **start, off_t offset, int length, int dummy);
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extern int dev_ioctl(unsigned int cmd, void *);
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extern void dev_init(void);
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/* Locking protection for page faults during outputs to devices unloaded during the fault */
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extern int dev_lockct;
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/*
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* These two don't currently need to be interrupt-safe
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* but they may do soon. Do it properly anyway.
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*/
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extern __inline__ void dev_lock_list(void)
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{
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unsigned long flags;
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save_flags(flags);
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cli();
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dev_lockct++;
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restore_flags(flags);
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}
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extern __inline__ void dev_unlock_list(void)
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{
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unsigned long flags;
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save_flags(flags);
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cli();
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dev_lockct--;
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restore_flags(flags);
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}
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/*
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* This almost never occurs, isn't in performance critical paths
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* and we can thus be relaxed about it
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*/
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extern __inline__ void dev_lock_wait(void)
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{
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while(dev_lockct)
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schedule();
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}
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| 293 |
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/* These functions live elsewhere (drivers/net/net_init.c, but related) */
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extern void ether_setup(struct device *dev);
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extern void tr_setup(struct device *dev);
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extern void fddi_setup(struct device *dev);
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extern int ether_config(struct device *dev, struct ifmap *map);
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/* Support for loadable net-drivers */
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extern int register_netdev(struct device *dev);
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extern void unregister_netdev(struct device *dev);
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extern int register_netdevice_notifier(struct notifier_block *nb);
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extern int unregister_netdevice_notifier(struct notifier_block *nb);
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/* Functions used for multicast support */
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extern void dev_mc_upload(struct device *dev);
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extern void dev_mc_delete(struct device *dev, void *addr, int alen, int all);
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| 307 |
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extern void dev_mc_add(struct device *dev, void *addr, int alen, int newonly);
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extern void dev_mc_discard(struct device *dev);
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/* This is the wrong place but it'll do for the moment */
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extern void ip_mc_allhost(struct device *dev);
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#endif /* __KERNEL__ */
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#endif /* _LINUX_DEV_H */
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