1#ifndef _NET_DN_DEV_H 2#define _NET_DN_DEV_H 3 4 5struct dn_dev; 6 7struct dn_ifaddr { 8 struct dn_ifaddr *ifa_next; 9 struct dn_dev *ifa_dev; 10 __le16 ifa_local; 11 __le16 ifa_address; 12 __u8 ifa_flags; 13 __u8 ifa_scope; 14 char ifa_label[IFNAMSIZ]; 15}; 16 17#define DN_DEV_S_RU 0 /* Run - working normally */ 18#define DN_DEV_S_CR 1 /* Circuit Rejected */ 19#define DN_DEV_S_DS 2 /* Data Link Start */ 20#define DN_DEV_S_RI 3 /* Routing Layer Initialize */ 21#define DN_DEV_S_RV 4 /* Routing Layer Verify */ 22#define DN_DEV_S_RC 5 /* Routing Layer Complete */ 23#define DN_DEV_S_OF 6 /* Off */ 24#define DN_DEV_S_HA 7 /* Halt */ 25 26 27/* 28 * The dn_dev_parms structure contains the set of parameters 29 * for each device (hence inclusion in the dn_dev structure) 30 * and an array is used to store the default types of supported 31 * device (in dn_dev.c). 32 * 33 * The type field matches the ARPHRD_ constants and is used in 34 * searching the list for supported devices when new devices 35 * come up. 36 * 37 * The mode field is used to find out if a device is broadcast, 38 * multipoint, or pointopoint. Please note that DECnet thinks 39 * different ways about devices to the rest of the kernel 40 * so the normal IFF_xxx flags are invalid here. For devices 41 * which can be any combination of the previously mentioned 42 * attributes, you can set this on a per device basis by 43 * installing an up() routine. 44 * 45 * The device state field, defines the initial state in which the 46 * device will come up. In the dn_dev structure, it is the actual 47 * state. 48 * 49 * Things have changed here. I've killed timer1 since it's a user space 50 * issue for a user space routing deamon to sort out. The kernel does 51 * not need to be bothered with it. 52 * 53 * Timers: 54 * t2 - Rate limit timer, min time between routing and hello messages 55 * t3 - Hello timer, send hello messages when it expires 56 * 57 * Callbacks: 58 * up() - Called to initialize device, return value can veto use of 59 * device with DECnet. 60 * down() - Called to turn device off when it goes down 61 * timer3() - Called once for each ifaddr when timer 3 goes off 62 * 63 * sysctl - Hook for sysctl things 64 * 65 */ 66struct dn_dev_parms { 67 int type; /* ARPHRD_xxx */ 68 int mode; /* Broadcast, Unicast, Mulitpoint */ 69#define DN_DEV_BCAST 1 70#define DN_DEV_UCAST 2 71#define DN_DEV_MPOINT 4 72 int state; /* Initial state */ 73 int forwarding; /* 0=EndNode, 1=L1Router, 2=L2Router */ 74 unsigned long t2; /* Default value of t2 */ 75 unsigned long t3; /* Default value of t3 */ 76 int priority; /* Priority to be a router */ 77 char *name; /* Name for sysctl */ 78 int ctl_name; /* Index for sysctl */ 79 int (*up)(struct net_device *); 80 void (*down)(struct net_device *); 81 void (*timer3)(struct net_device *, struct dn_ifaddr *ifa); 82 void *sysctl; 83}; 84 85 86struct dn_dev { 87 struct dn_ifaddr *ifa_list; 88 struct net_device *dev; 89 struct dn_dev_parms parms; 90 char use_long; 91 struct timer_list timer; 92 unsigned long t3; 93 struct neigh_parms *neigh_parms; 94 __u8 addr[ETH_ALEN]; 95 struct neighbour *router; /* Default router on circuit */ 96 struct neighbour *peer; /* Peer on pointopoint links */ 97 unsigned long uptime; /* Time device went up in jiffies */ 98}; 99 100struct dn_short_packet 101{ 102 __u8 msgflg; 103 __le16 dstnode; 104 __le16 srcnode; 105 __u8 forward; 106} __attribute__((packed)); 107 108struct dn_long_packet 109{ 110 __u8 msgflg; 111 __u8 d_area; 112 __u8 d_subarea; 113 __u8 d_id[6]; 114 __u8 s_area; 115 __u8 s_subarea; 116 __u8 s_id[6]; 117 __u8 nl2; 118 __u8 visit_ct; 119 __u8 s_class; 120 __u8 pt; 121} __attribute__((packed)); 122 123/*------------------------- DRP - Routing messages ---------------------*/ 124 125struct endnode_hello_message 126{ 127 __u8 msgflg; 128 __u8 tiver[3]; 129 __u8 id[6]; 130 __u8 iinfo; 131 __le16 blksize; 132 __u8 area; 133 __u8 seed[8]; 134 __u8 neighbor[6]; 135 __le16 timer; 136 __u8 mpd; 137 __u8 datalen; 138 __u8 data[2]; 139} __attribute__((packed)); 140 141struct rtnode_hello_message 142{ 143 __u8 msgflg; 144 __u8 tiver[3]; 145 __u8 id[6]; 146 __u8 iinfo; 147 __le16 blksize; 148 __u8 priority; 149 __u8 area; 150 __le16 timer; 151 __u8 mpd; 152} __attribute__((packed)); 153 154 155extern void dn_dev_init(void); 156extern void dn_dev_cleanup(void); 157 158extern int dn_dev_ioctl(unsigned int cmd, void __user *arg); 159 160extern void dn_dev_devices_off(void); 161extern void dn_dev_devices_on(void); 162 163extern void dn_dev_init_pkt(struct sk_buff *skb); 164extern void dn_dev_veri_pkt(struct sk_buff *skb); 165extern void dn_dev_hello(struct sk_buff *skb); 166 167extern void dn_dev_up(struct net_device *); 168extern void dn_dev_down(struct net_device *); 169 170extern int dn_dev_set_default(struct net_device *dev, int force); 171extern struct net_device *dn_dev_get_default(void); 172extern int dn_dev_bind_default(__le16 *addr); 173 174extern int register_dnaddr_notifier(struct notifier_block *nb); 175extern int unregister_dnaddr_notifier(struct notifier_block *nb); 176 177static inline int dn_dev_islocal(struct net_device *dev, __le16 addr) 178{ 179 struct dn_dev *dn_db = dev->dn_ptr; 180 struct dn_ifaddr *ifa; 181 182 if (dn_db == NULL) { 183 printk(KERN_DEBUG "dn_dev_islocal: Called for non DECnet device\n"); 184 return 0; 185 } 186 187 for(ifa = dn_db->ifa_list; ifa; ifa = ifa->ifa_next) 188 if ((addr ^ ifa->ifa_local) == 0) 189 return 1; 190 191 return 0; 192} 193 194#endif /* _NET_DN_DEV_H */ 195