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authorLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 22:20:36 (GMT)
committerLinus Torvalds <torvalds@ppc970.osdl.org>2005-04-16 22:20:36 (GMT)
commit1da177e4c3f41524e886b7f1b8a0c1fc7321cac2 (patch)
tree0bba044c4ce775e45a88a51686b5d9f90697ea9d /include/net/dn_dev.h
downloadlinux-1da177e4c3f41524e886b7f1b8a0c1fc7321cac2.tar.xz
Linux-2.6.12-rc2
Initial git repository build. I'm not bothering with the full history, even though we have it. We can create a separate "historical" git archive of that later if we want to, and in the meantime it's about 3.2GB when imported into git - space that would just make the early git days unnecessarily complicated, when we don't have a lot of good infrastructure for it. Let it rip!
Diffstat (limited to 'include/net/dn_dev.h')
-rw-r--r--include/net/dn_dev.h194
1 files changed, 194 insertions, 0 deletions
diff --git a/include/net/dn_dev.h b/include/net/dn_dev.h
new file mode 100644
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--- /dev/null
+++ b/include/net/dn_dev.h
@@ -0,0 +1,194 @@
+#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;
+ dn_address ifa_address;
+ 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 it's 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 once for each ifaddr 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 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 *, struct dn_ifaddr *ifa);
+ 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 __user *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 int dn_dev_set_default(struct net_device *dev, int force);
+extern struct net_device *dn_dev_get_default(void);
+extern int dn_dev_bind_default(dn_address *addr);
+
+extern int register_dnaddr_notifier(struct notifier_block *nb);
+extern int unregister_dnaddr_notifier(struct notifier_block *nb);
+
+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 */