--- /dev/null
+#ifndef _NET_DN_DEV_H
+#define _NET_DN_DEV_H
+
+
+struct dn_dev;
+
+struct dn_ifaddr {
+ struct dn_ifaddr __rcu *ifa_next;
+ struct dn_dev *ifa_dev;
+ __le16 ifa_local;
+ __le16 ifa_address;
+ __u32 ifa_flags;
+ __u8 ifa_scope;
+ char ifa_label[IFNAMSIZ];
+ struct rcu_head rcu;
+};
+
+#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 (*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 __rcu *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;
+ __u8 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 {
+ __u8 msgflg;
+ __le16 dstnode;
+ __le16 srcnode;
+ __u8 forward;
+} __packed;
+
+struct dn_long_packet {
+ __u8 msgflg;
+ __u8 d_area;
+ __u8 d_subarea;
+ __u8 d_id[6];
+ __u8 s_area;
+ __u8 s_subarea;
+ __u8 s_id[6];
+ __u8 nl2;
+ __u8 visit_ct;
+ __u8 s_class;
+ __u8 pt;
+} __packed;
+
+/*------------------------- DRP - Routing messages ---------------------*/
+
+struct endnode_hello_message {
+ __u8 msgflg;
+ __u8 tiver[3];
+ __u8 id[6];
+ __u8 iinfo;
+ __le16 blksize;
+ __u8 area;
+ __u8 seed[8];
+ __u8 neighbor[6];
+ __le16 timer;
+ __u8 mpd;
+ __u8 datalen;
+ __u8 data[2];
+} __packed;
+
+struct rtnode_hello_message {
+ __u8 msgflg;
+ __u8 tiver[3];
+ __u8 id[6];
+ __u8 iinfo;
+ __le16 blksize;
+ __u8 priority;
+ __u8 area;
+ __le16 timer;
+ __u8 mpd;
+} __packed;
+
+
+void dn_dev_init(void);
+void dn_dev_cleanup(void);
+
+int dn_dev_ioctl(unsigned int cmd, void __user *arg);
+
+void dn_dev_devices_off(void);
+void dn_dev_devices_on(void);
+
+void dn_dev_init_pkt(struct sk_buff *skb);
+void dn_dev_veri_pkt(struct sk_buff *skb);
+void dn_dev_hello(struct sk_buff *skb);
+
+void dn_dev_up(struct net_device *);
+void dn_dev_down(struct net_device *);
+
+int dn_dev_set_default(struct net_device *dev, int force);
+struct net_device *dn_dev_get_default(void);
+int dn_dev_bind_default(__le16 *addr);
+
+int register_dnaddr_notifier(struct notifier_block *nb);
+int unregister_dnaddr_notifier(struct notifier_block *nb);
+
+static inline int dn_dev_islocal(struct net_device *dev, __le16 addr)
+{
+ struct dn_dev *dn_db;
+ struct dn_ifaddr *ifa;
+ int res = 0;
+
+ rcu_read_lock();
+ dn_db = rcu_dereference(dev->dn_ptr);
+ if (dn_db == NULL) {
+ printk(KERN_DEBUG "dn_dev_islocal: Called for non DECnet device\n");
+ goto out;
+ }
+
+ for (ifa = rcu_dereference(dn_db->ifa_list);
+ ifa != NULL;
+ ifa = rcu_dereference(ifa->ifa_next))
+ if ((addr ^ ifa->ifa_local) == 0) {
+ res = 1;
+ break;
+ }
+out:
+ rcu_read_unlock();
+ return res;
+}
+
+#endif /* _NET_DN_DEV_H */
Code Review / kvmfornfv.git / blobdiff