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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 | #ifndef _NET_DN_DEV_H #define _NET_DN_DEV_H struct dn_dev; struct dn_ifaddr { struct dn_ifaddr *ifa_next; struct dn_dev *ifa_dev; dn_address ifa_local; unsigned char ifa_flags; unsigned char ifa_scope; char ifa_label[IFNAMSIZ]; }; #define DN_DEV_S_RU 0 /* Run - working normally */ #define DN_DEV_S_CR 1 /* Circuit Rejected */ #define DN_DEV_S_DS 2 /* Data Link Start */ #define DN_DEV_S_RI 3 /* Routing Layer Initialize */ #define DN_DEV_S_RV 4 /* Routing Layer Verify */ #define DN_DEV_S_RC 5 /* Routing Layer Complete */ #define DN_DEV_S_OF 6 /* Off */ #define DN_DEV_S_HA 7 /* Halt */ /* * The dn_dev_parms structure contains the set of parameters * for each device (hence inclusion in the dn_dev structure) * and an array is used to store the default types of supported * device (in dn_dev.c). * * The type field matches the ARPHRD_ constants and is used in * searching the list for supported devices when new devices * come up. * * The mode field is used to find out if a device is broadcast, * multipoint, or pointopoint. Please note that DECnet thinks * different ways about devices to the rest of the kernel * so the normal IFF_xxx flags are invalid here. For devices * which can be any combination of the previously mentioned * attributes, you can set this on a per device basis by * installing an up() routine. * * The device state field, defines the initial state in which the * device will come up. In the dn_dev structure, it is the actual * state. * * Things have changed here. I've killed timer1 since its a user space * issue for a user space routing deamon to sort out. The kernel does * not need to be bothered with it. * * Timers: * t2 - Rate limit timer, min time between routing and hello messages * t3 - Hello timer, send hello messages when it expires * * Callbacks: * up() - Called to initialize device, return value can veto use of * device with DECnet. * down() - Called to turn device off when it goes down * timer3() - Called when timer 3 goes off * * sysctl - Hook for sysctl things * */ struct dn_dev_parms { int type; /* ARPHRD_xxx */ int mode; /* Broadcast, Unicast, Mulitpoint */ #define DN_DEV_BCAST 1 #define DN_DEV_UCAST 2 #define DN_DEV_MPOINT 4 int state; /* Initial state */ int forwarding; /* 0=EndNode, 1=L1Router, 2=L2Router */ unsigned short blksize; /* Block Size */ unsigned long t2; /* Default value of t2 */ unsigned long t3; /* Default value of t3 */ int priority; /* Priority to be a router */ char *name; /* Name for sysctl */ int ctl_name; /* Index for sysctl */ int (*up)(struct net_device *); void (*down)(struct net_device *); void (*timer3)(struct net_device *); void *sysctl; }; struct dn_dev { struct dn_ifaddr *ifa_list; struct net_device *dev; struct dn_dev_parms parms; char use_long; struct timer_list timer; unsigned long t3; struct neigh_parms *neigh_parms; unsigned char addr[ETH_ALEN]; struct neighbour *router; /* Default router on circuit */ struct neighbour *peer; /* Peer on pointopoint links */ unsigned long uptime; /* Time device went up in jiffies */ }; struct dn_short_packet { unsigned char msgflg __attribute__((packed)); unsigned short dstnode __attribute__((packed)); unsigned short srcnode __attribute__((packed)); unsigned char forward __attribute__((packed)); }; struct dn_long_packet { unsigned char msgflg __attribute__((packed)); unsigned char d_area __attribute__((packed)); unsigned char d_subarea __attribute__((packed)); unsigned char d_id[6] __attribute__((packed)); unsigned char s_area __attribute__((packed)); unsigned char s_subarea __attribute__((packed)); unsigned char s_id[6] __attribute__((packed)); unsigned char nl2 __attribute__((packed)); unsigned char visit_ct __attribute__((packed)); unsigned char s_class __attribute__((packed)); unsigned char pt __attribute__((packed)); }; /*------------------------- DRP - Routing messages ---------------------*/ struct endnode_hello_message { unsigned char msgflg __attribute__((packed)); unsigned char tiver[3] __attribute__((packed)); unsigned char id[6] __attribute__((packed)); unsigned char iinfo __attribute__((packed)); unsigned short blksize __attribute__((packed)); unsigned char area __attribute__((packed)); unsigned char seed[8] __attribute__((packed)); unsigned char neighbor[6] __attribute__((packed)); unsigned short timer __attribute__((packed)); unsigned char mpd __attribute__((packed)); unsigned char datalen __attribute__((packed)); unsigned char data[2] __attribute__((packed)); }; struct rtnode_hello_message { unsigned char msgflg __attribute__((packed)); unsigned char tiver[3] __attribute__((packed)); unsigned char id[6] __attribute__((packed)); unsigned char iinfo __attribute__((packed)); unsigned short blksize __attribute__((packed)); unsigned char priority __attribute__((packed)); unsigned char area __attribute__((packed)); unsigned short timer __attribute__((packed)); unsigned char mpd __attribute__((packed)); }; extern void dn_dev_init(void); extern void dn_dev_cleanup(void); extern int dn_dev_ioctl(unsigned int cmd, void *arg); extern void dn_dev_devices_off(void); extern void dn_dev_devices_on(void); extern void dn_dev_init_pkt(struct sk_buff *skb); extern void dn_dev_veri_pkt(struct sk_buff *skb); extern void dn_dev_hello(struct sk_buff *skb); extern void dn_dev_up(struct net_device *); extern void dn_dev_down(struct net_device *); extern struct net_device *decnet_default_device; static __inline__ int dn_dev_islocal(struct net_device *dev, dn_address addr) { struct dn_dev *dn_db = dev->dn_ptr; struct dn_ifaddr *ifa; if (dn_db == NULL) { printk(KERN_DEBUG "dn_dev_islocal: Called for non DECnet device\n"); return 0; } for(ifa = dn_db->ifa_list; ifa; ifa = ifa->ifa_next) if ((addr ^ ifa->ifa_local) == 0) return 1; return 0; } #endif /* _NET_DN_DEV_H */ |