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*/
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 *
10 * Authors: Ross Biro, <bir7@leland.Stanford.Edu>
11 * Fred N. van Kempen, <waltje@uWalt.NL.Mugnet.ORG>
12 * Corey Minyard <wf-rch!minyard@relay.EU.net>
13 * Donald J. Becker, <becker@super.org>
14 * Alan Cox, <A.Cox@swansea.ac.uk>
15 *
16 * This program is free software; you can redistribute it and/or
17 * modify it under the terms of the GNU General Public License
18 * as published by the Free Software Foundation; either version
19 * 2 of the License, or (at your option) any later version.
20 *
21 * Moved to /usr/include/linux for NET3
22 */
23 #ifndef _LINUX_NETDEVICE_H
24 #define _LINUX_NETDEVICE_H
25
26 #include <linux/if.h>
27 #include <linux/if_ether.h>
28 #include <linux/skbuff.h>
29
30 /* for future expansion when we will have different priorities. */
31 #define DEV_NUMBUFFS 3
32 #define MAX_ADDR_LEN 7
33 #define MAX_HEADER 18
34
35 #define IS_MYADDR 1 /* address is (one of) our own */
36 #define IS_LOOPBACK 2 /* address is for LOOPBACK */
37 #define IS_BROADCAST 3 /* address is a valid broadcast */
38 #define IS_INVBCAST 4 /* Wrong netmask bcast not for us (unused)*/
39
40 /*
41 * The DEVICE structure.
42 * Actually, this whole structure is a big mistake. It mixes I/O
43 * data with strictly "high-level" data, and it has to know about
44 * almost every data structure used in the INET module.
45 */
46 struct device
47 {
48
49 /*
50 * This is the first field of the "visible" part of this structure
51 * (i.e. as seen by users in the "Space.c" file). It is the name
52 * the interface.
53 */
54 char *name;
55
56 /* I/O specific fields. */
57 unsigned long rmem_end; /* shmem "recv" end */
58 unsigned long rmem_start; /* shmem "recv" start */
59 unsigned long mem_end; /* sahared mem end */
60 unsigned long mem_start; /* shared mem start */
61 unsigned short base_addr; /* device I/O address */
62 unsigned char irq; /* device IRQ number */
63
64 /* Low-level status flags. */
65 volatile unsigned char start, /* start an operation */
66 tbusy, /* transmitter busy */
67 interrupt; /* interrupt arrived */
68
69 struct device *next;
70
71 /* The device initialization function. Called only once. */
72 int (*init)(struct device *dev);
73
74 /* Some hardware also needs these fields, but they are not part of the
75 usual set specified in Space.c. */
76 unsigned char if_port; /* Selectable AUI, TP,..*/
77 unsigned char dma; /* DMA channel */
78
79 struct enet_statistics* (*get_stats)(struct device *dev);
80
81 /*
82 * This marks the end of the "visible" part of the structure. All
83 * fields hereafter are internal to the system, and may change at
84 * will (read: may be cleaned up at will).
85 */
86
87 /* These may be needed for future network-power-down code. */
88 unsigned long trans_start; /* Time (in jiffies) of last Tx */
89 unsigned long last_rx; /* Time of last Rx */
90
91 unsigned short flags; /* interface flags (a la BSD) */
92 unsigned short family; /* address family ID (AF_INET) */
93 unsigned short metric; /* routing metric (not used) */
94 unsigned short mtu; /* interface MTU value */
95 unsigned short type; /* interface hardware type */
96 unsigned short hard_header_len; /* hardware hdr length */
97 void *priv; /* pointer to private data */
98
99 /* Interface address info. */
100 unsigned char broadcast[MAX_ADDR_LEN]; /* hw bcast add */
101 unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address */
102 unsigned char addr_len; /* harfware address length */
103 unsigned long pa_addr; /* protocol address */
104 unsigned long pa_brdaddr; /* protocol broadcast addr */
105 unsigned long pa_dstaddr; /* protocol P-P other side addr */
106 unsigned long pa_mask; /* protocol netmask */
107 unsigned short pa_alen; /* protocol address length */
108
109 /* Pointer to the interface buffers. */
110 struct sk_buff_head buffs[DEV_NUMBUFFS];
111
112 /* Pointers to interface service routines. */
113 int (*open)(struct device *dev);
114 int (*stop)(struct device *dev);
115 int (*hard_start_xmit) (struct sk_buff *skb,
116 struct device *dev);
117 int (*hard_header) (unsigned char *buff,
118 struct device *dev,
119 unsigned short type,
120 void *daddr,
121 void *saddr,
122 unsigned len,
123 struct sk_buff *skb);
124 int (*rebuild_header)(void *eth, struct device *dev,
125 unsigned long raddr, struct sk_buff *skb);
126 unsigned short (*type_trans) (struct sk_buff *skb,
127 struct device *dev);
128 #define HAVE_MULTICAST
129 void (*set_multicast_list)(struct device *dev,
130 int num_addrs, void *addrs);
131 #define HAVE_SET_MAC_ADDR
132 int (*set_mac_address)(struct device *dev, void *addr);
133 #define HAVE_PRIVATE_IOCTL
134 int (*do_ioctl)(struct device *dev, struct ifreq *ifr);
135 };
136
137
138 struct packet_type {
139 unsigned short type; /* This is really htons(ether_type). */
140 unsigned short copy:1;
141 int (*func) (struct sk_buff *, struct device *,
142 struct packet_type *);
143 void *data;
144 struct packet_type *next;
145 };
146
147
148 #ifdef __KERNEL__
149
150 /* Used by dev_rint */
151 #define IN_SKBUFF 1
152
153 extern volatile char in_bh;
154
155 extern struct device *dev_base;
156 extern struct packet_type *ptype_base;
157
158
159 extern int ip_addr_match(unsigned long addr1, unsigned long addr2);
160 extern int ip_chk_addr(unsigned long addr);
161 extern struct device *ip_dev_check(unsigned long daddr);
162 extern unsigned long ip_my_addr(void);
163 extern unsigned long ip_get_mask(unsigned long addr);
164
165 extern void dev_add_pack(struct packet_type *pt);
166 extern void dev_remove_pack(struct packet_type *pt);
167 extern struct device *dev_get(char *name);
168 extern int dev_open(struct device *dev);
169 extern int dev_close(struct device *dev);
170 extern void dev_queue_xmit(struct sk_buff *skb, struct device *dev,
171 int pri);
172 #define HAVE_NETIF_RX 1
173 extern void netif_rx(struct sk_buff *skb);
174 /* The old interface to netif_rx(). */
175 extern int dev_rint(unsigned char *buff, long len, int flags,
176 struct device * dev);
177 extern void dev_transmit(void);
178 extern int in_inet_bh(void);
179 extern void inet_bh(void *tmp);
180 extern void dev_tint(struct device *dev);
181 extern int dev_get_info(char *buffer, char **start, off_t offset, int length);
182 extern int dev_ioctl(unsigned int cmd, void *);
183
184 extern void dev_init(void);
185
186 /* This function lives elsewhere (drivers/net/net_init.c but is related) */
187
188 extern void ether_setup(struct device *dev);
189
190 #endif /* __KERNEL__ */
191
192 #endif /* _LINUX_DEV_H */
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*/