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1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32 33 34 35 36 37 38 39 40 41 42 43 44 45 46 47 48 49 50 51 52 53 54 55 56 57 58 59 60 61 62 63 64 65 66 67 68 69 70 71 72 73 74 75 76 77 78 79 80 81 82 83 84 85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 100 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 116 117 118 119 120 121 122 123 124 125 126 127 128 129 130 131 132 133 134 135 136 137 138 139 140 141 142 143 144 145 146 147 148 149 150 151 152 153 154 155 156 157 158 159 160 161 162 163 164 165 166 167 168 169 170 171 172 173 174 175 176 177 178 179 180 181 182 183 184 185 186 187 188 189 190 191 192 193 194 195 196 197 198 199 200 201 202 203 204 205 206 207 208 209 210 211 212 213 214 215 216 217 218 219 220 221 222 223 224 225 226 227 228 229 230 231 232 233 234 235 236 237 238 239 240 241 242 243 244 245 246 247 248 249 250 251 252 253 254 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 278 279 280 281 282 283 284 285 286 287 288 289 290 291 292 293 294 295 296 297 298 299 300 301 302 303 304 305 306 307 308 309 310 311 312 313 | /* * 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 1.0.11 07/31/96 * * 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@super.org> * Alan Cox, <A.Cox@swansea.ac.uk> * Bjorn Ekwall. <bj0rn@blox.se> * Lawrence V. Stefani, <stefani@lkg.dec.com> * * 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 * Added extern for fddi_setup() */ #ifndef _LINUX_NETDEVICE_H #define _LINUX_NETDEVICE_H #include <linux/config.h> #include <linux/if.h> #include <linux/if_ether.h> /* for future expansion when we will have different priorities. */ #define DEV_NUMBUFFS 3 #define MAX_ADDR_LEN 7 #ifndef CONFIG_AX25 #ifndef CONFIG_AX25_MODULE #ifndef CONFIG_TR #if !defined(CONFIG_NET_IPIP) && !defined(CONFIG_NET_IPIP_MODULE) #define MAX_HEADER 32 /* We really need about 18 worst case .. so 32 is aligned */ #else #define MAX_HEADER 80 /* We need to allow for having tunnel headers */ #endif /* IPIP */ #else #define MAX_HEADER 48 /* Token Ring header needs 40 bytes ... 48 is aligned */ #endif /* TR */ #else #define MAX_HEADER 96 /* AX.25 + NET/ROM module*/ #endif /* AX.25 module */ #else #define MAX_HEADER 96 /* AX.25 + NET/ROM */ #endif /* AX.25 */ #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 (unused)*/ #define IS_MULTICAST 5 /* Multicast IP address */ #ifdef __KERNEL__ #include <linux/skbuff.h> /* * We tag multicasts with these structures. */ struct dev_mc_list { struct dev_mc_list *next; char dmi_addr[MAX_ADDR_LEN]; unsigned short dmi_addrlen; unsigned short dmi_users; }; struct hh_cache { struct hh_cache *hh_next; void *hh_arp; /* Opaque pointer, used by * any address resolution module, * not only ARP. */ int hh_refcnt; /* number of users */ unsigned short hh_type; /* protocol identifier, f.e ETH_P_IP */ char hh_uptodate; /* hh_data is valid */ char hh_data[16]; /* cached hardware header */ }; /* * 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. */ 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 char irq; /* device IRQ number */ /* Low-level status flags. */ volatile unsigned char start, /* start an operation */ interrupt; /* interrupt arrived */ unsigned long tbusy; /* transmitter busy must be long for bitops */ 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 pad; /* make dev_addr aligned to 8 bytes */ unsigned char dev_addr[MAX_ADDR_LEN]; /* hw address */ unsigned char addr_len; /* hardware 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 */ struct dev_mc_list *mc_list; /* Multicast mac addresses */ int mc_count; /* Number of installed mcasts */ struct ip_mc_list *ip_mc_list; /* IP multicast filter chain */ __u32 tx_queue_len; /* Max frames per queue allowed */ /* For load balancing driver pair support */ unsigned long pkt_queue; /* Packets queued */ struct device *slave; /* Slave device */ struct net_alias_info *alias_info; /* main dev alias info */ struct net_alias *my_alias; /* alias devs */ /* Pointer to the interface buffers. */ struct sk_buff_head 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) (struct sk_buff *skb, struct device *dev, unsigned short type, void *daddr, void *saddr, unsigned len); int (*rebuild_header)(void *eth, struct device *dev, unsigned long raddr, 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 void (*header_cache_bind)(struct hh_cache **hhp, struct device *dev, unsigned short htype, __u32 daddr); 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); struct iw_statistics* (*get_wireless_stats)(struct device *dev); }; struct packet_type { unsigned short type; /* This is really htons(ether_type). */ struct device * dev; int (*func) (struct sk_buff *, struct device *, struct packet_type *); void *data; struct packet_type *next; }; #include <linux/interrupt.h> #include <linux/notifier.h> /* Used by dev_rint */ #define IN_SKBUFF 1 extern volatile unsigned long in_bh; extern struct device loopback_dev; extern struct device *dev_base; extern struct packet_type *ptype_base[16]; extern int ip_addr_match(unsigned long addr1, unsigned long addr2); extern int ip_chk_addr(unsigned long addr); extern struct device *ip_dev_bynet(unsigned long daddr, unsigned long mask); extern unsigned long ip_my_addr(void); extern unsigned long ip_get_mask(unsigned long addr); extern struct device *ip_dev_find(unsigned long addr); extern struct device *dev_getbytype(unsigned short type); 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 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); extern void net_bh(void); extern void dev_tint(struct device *dev); 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 void dev_init(void); /* Locking protection for page faults during outputs to devices unloaded during the fault */ extern int dev_lockct; /* * These two don't currently need to be interrupt-safe * but they may do soon. Do it properly anyway. */ extern __inline__ void dev_lock_list(void) { unsigned long flags; save_flags(flags); cli(); dev_lockct++; restore_flags(flags); } extern __inline__ void dev_unlock_list(void) { unsigned long flags; save_flags(flags); cli(); dev_lockct--; restore_flags(flags); } /* * This almost never occurs, isn't in performance critical paths * and we can thus be relaxed about it */ extern __inline__ void dev_lock_wait(void) { while(dev_lockct) schedule(); } /* These functions live elsewhere (drivers/net/net_init.c, but related) */ extern void ether_setup(struct device *dev); extern void tr_setup(struct device *dev); extern void fddi_setup(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_netdevice_notifier(struct notifier_block *nb); extern int unregister_netdevice_notifier(struct notifier_block *nb); /* Functions used for multicast support */ extern void dev_mc_upload(struct device *dev); extern void dev_mc_delete(struct device *dev, void *addr, int alen, int all); extern void dev_mc_add(struct device *dev, void *addr, int alen, int newonly); extern void dev_mc_discard(struct device *dev); /* This is the wrong place but it'll do for the moment */ extern void ip_mc_allhost(struct device *dev); #endif /* __KERNEL__ */ #endif /* _LINUX_DEV_H */ |