/* * 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, * Fred N. van Kempen, * Corey Minyard * Donald J. Becker, * Alan Cox, * Bjorn Ekwall. * Lawrence V. Stefani, * * 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 #include #include /* for future expansion when we will have different priorities. */ #define DEV_NUMBUFFS 3 #define MAX_ADDR_LEN 7 #ifndef CONFIG_AX25 #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 + NetROM */ #endif /* AX25 */ #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 /* * 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. */ #ifdef MACH #ifndef MACH_INCLUDE #define device linux_device #endif struct linux_device #else struct device #endif { /* * 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 linux_device *next; /* The device initialization function. Called only once. */ int (*init)(struct linux_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 linux_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 linux_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 linux_device *dev); int (*stop)(struct linux_device *dev); int (*hard_start_xmit) (struct sk_buff *skb, struct linux_device *dev); int (*hard_header) (struct sk_buff *skb, struct linux_device *dev, unsigned short type, void *daddr, void *saddr, unsigned len); int (*rebuild_header)(void *eth, struct linux_device *dev, unsigned long raddr, struct sk_buff *skb); #define HAVE_MULTICAST void (*set_multicast_list)(struct linux_device *dev); #define HAVE_SET_MAC_ADDR int (*set_mac_address)(struct linux_device *dev, void *addr); #define HAVE_PRIVATE_IOCTL int (*do_ioctl)(struct linux_device *dev, struct ifreq *ifr, int cmd); #define HAVE_SET_CONFIG int (*set_config)(struct linux_device *dev, struct ifmap *map); #define HAVE_HEADER_CACHE void (*header_cache_bind)(struct hh_cache **hhp, struct linux_device *dev, unsigned short htype, __u32 daddr); void (*header_cache_update)(struct hh_cache *hh, struct linux_device *dev, unsigned char * haddr); #define HAVE_CHANGE_MTU int (*change_mtu)(struct linux_device *dev, int new_mtu); struct iw_statistics* (*get_wireless_stats)(struct linux_device *dev); #ifdef MACH #ifdef MACH_INCLUDE struct net_data *net_data; #else void *net_data; #endif #endif }; struct packet_type { unsigned short type; /* This is really htons(ether_type). */ struct linux_device * dev; int (*func) (struct sk_buff *, struct linux_device *, struct packet_type *); void *data; struct packet_type *next; }; #include #include /* Used by dev_rint */ #define IN_SKBUFF 1 extern volatile unsigned long in_bh; extern struct linux_device loopback_dev; extern struct linux_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 linux_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 linux_device *ip_dev_find(unsigned long addr); extern struct linux_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 linux_device *dev_get(const char *name); extern int dev_open(struct linux_device *dev); extern int dev_close(struct linux_device *dev); extern void dev_queue_xmit(struct sk_buff *skb, struct linux_device *dev, int pri); #define HAVE_NETIF_RX 1 extern void netif_rx(struct sk_buff *skb); extern void net_bh(void); #ifdef MACH #define dev_tint(dev) #else extern void dev_tint(struct linux_device *dev); #endif 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 linux_device *dev); extern void tr_setup(struct linux_device *dev); extern void fddi_setup(struct linux_device *dev); extern int ether_config(struct linux_device *dev, struct ifmap *map); /* Support for loadable net-drivers */ extern int register_netdev(struct linux_device *dev); extern void unregister_netdev(struct linux_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 linux_device *dev); extern void dev_mc_delete(struct linux_device *dev, void *addr, int alen, int all); extern void dev_mc_add(struct linux_device *dev, void *addr, int alen, int newonly); extern void dev_mc_discard(struct linux_device *dev); /* This is the wrong place but it'll do for the moment */ extern void ip_mc_allhost(struct linux_device *dev); #endif /* __KERNEL__ */ #endif /* _LINUX_DEV_H */