summaryrefslogtreecommitdiffstats
path: root/include/net/netrom.h
diff options
context:
space:
mode:
Diffstat (limited to '')
-rw-r--r--include/net/netrom.h272
1 files changed, 272 insertions, 0 deletions
diff --git a/include/net/netrom.h b/include/net/netrom.h
new file mode 100644
index 000000000..80f15b1c1
--- /dev/null
+++ b/include/net/netrom.h
@@ -0,0 +1,272 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+/*
+ * Declarations of NET/ROM type objects.
+ *
+ * Jonathan Naylor G4KLX 9/4/95
+ */
+
+#ifndef _NETROM_H
+#define _NETROM_H
+
+#include <linux/netrom.h>
+#include <linux/list.h>
+#include <linux/slab.h>
+#include <net/sock.h>
+#include <linux/refcount.h>
+#include <linux/seq_file.h>
+
+#define NR_NETWORK_LEN 15
+#define NR_TRANSPORT_LEN 5
+
+#define NR_PROTO_IP 0x0C
+
+#define NR_PROTOEXT 0x00
+#define NR_CONNREQ 0x01
+#define NR_CONNACK 0x02
+#define NR_DISCREQ 0x03
+#define NR_DISCACK 0x04
+#define NR_INFO 0x05
+#define NR_INFOACK 0x06
+#define NR_RESET 0x07
+
+#define NR_CHOKE_FLAG 0x80
+#define NR_NAK_FLAG 0x40
+#define NR_MORE_FLAG 0x20
+
+/* Define Link State constants. */
+enum {
+ NR_STATE_0,
+ NR_STATE_1,
+ NR_STATE_2,
+ NR_STATE_3
+};
+
+#define NR_COND_ACK_PENDING 0x01
+#define NR_COND_REJECT 0x02
+#define NR_COND_PEER_RX_BUSY 0x04
+#define NR_COND_OWN_RX_BUSY 0x08
+
+#define NR_DEFAULT_T1 120000 /* Outstanding frames - 120 seconds */
+#define NR_DEFAULT_T2 5000 /* Response delay - 5 seconds */
+#define NR_DEFAULT_N2 3 /* Number of Retries - 3 */
+#define NR_DEFAULT_T4 180000 /* Busy Delay - 180 seconds */
+#define NR_DEFAULT_IDLE 0 /* No Activity Timeout - none */
+#define NR_DEFAULT_WINDOW 4 /* Default Window Size - 4 */
+#define NR_DEFAULT_OBS 6 /* Default Obsolescence Count - 6 */
+#define NR_DEFAULT_QUAL 10 /* Default Neighbour Quality - 10 */
+#define NR_DEFAULT_TTL 16 /* Default Time To Live - 16 */
+#define NR_DEFAULT_ROUTING 1 /* Is routing enabled ? */
+#define NR_DEFAULT_FAILS 2 /* Link fails until route fails */
+#define NR_DEFAULT_RESET 0 /* Sent / accept reset cmds? */
+
+#define NR_MODULUS 256
+#define NR_MAX_WINDOW_SIZE 127 /* Maximum Window Allowable - 127 */
+#define NR_MAX_PACKET_SIZE 236 /* Maximum Packet Length - 236 */
+
+struct nr_sock {
+ struct sock sock;
+ ax25_address user_addr, source_addr, dest_addr;
+ struct net_device *device;
+ unsigned char my_index, my_id;
+ unsigned char your_index, your_id;
+ unsigned char state, condition, bpqext, window;
+ unsigned short vs, vr, va, vl;
+ unsigned char n2, n2count;
+ unsigned long t1, t2, t4, idle;
+ unsigned short fraglen;
+ struct timer_list t1timer;
+ struct timer_list t2timer;
+ struct timer_list t4timer;
+ struct timer_list idletimer;
+ struct sk_buff_head ack_queue;
+ struct sk_buff_head reseq_queue;
+ struct sk_buff_head frag_queue;
+};
+
+#define nr_sk(sk) ((struct nr_sock *)(sk))
+
+struct nr_neigh {
+ struct hlist_node neigh_node;
+ ax25_address callsign;
+ ax25_digi *digipeat;
+ ax25_cb *ax25;
+ struct net_device *dev;
+ unsigned char quality;
+ unsigned char locked;
+ unsigned short count;
+ unsigned int number;
+ unsigned char failed;
+ refcount_t refcount;
+};
+
+struct nr_route {
+ unsigned char quality;
+ unsigned char obs_count;
+ struct nr_neigh *neighbour;
+};
+
+struct nr_node {
+ struct hlist_node node_node;
+ ax25_address callsign;
+ char mnemonic[7];
+ unsigned char which;
+ unsigned char count;
+ struct nr_route routes[3];
+ refcount_t refcount;
+ spinlock_t node_lock;
+};
+
+/*********************************************************************
+ * nr_node & nr_neigh lists, refcounting and locking
+ *********************************************************************/
+
+#define nr_node_hold(__nr_node) \
+ refcount_inc(&((__nr_node)->refcount))
+
+static __inline__ void nr_node_put(struct nr_node *nr_node)
+{
+ if (refcount_dec_and_test(&nr_node->refcount)) {
+ kfree(nr_node);
+ }
+}
+
+#define nr_neigh_hold(__nr_neigh) \
+ refcount_inc(&((__nr_neigh)->refcount))
+
+static __inline__ void nr_neigh_put(struct nr_neigh *nr_neigh)
+{
+ if (refcount_dec_and_test(&nr_neigh->refcount)) {
+ if (nr_neigh->ax25)
+ ax25_cb_put(nr_neigh->ax25);
+ kfree(nr_neigh->digipeat);
+ kfree(nr_neigh);
+ }
+}
+
+/* nr_node_lock and nr_node_unlock also hold/put the node's refcounter.
+ */
+static __inline__ void nr_node_lock(struct nr_node *nr_node)
+{
+ nr_node_hold(nr_node);
+ spin_lock_bh(&nr_node->node_lock);
+}
+
+static __inline__ void nr_node_unlock(struct nr_node *nr_node)
+{
+ spin_unlock_bh(&nr_node->node_lock);
+ nr_node_put(nr_node);
+}
+
+#define nr_neigh_for_each(__nr_neigh, list) \
+ hlist_for_each_entry(__nr_neigh, list, neigh_node)
+
+#define nr_neigh_for_each_safe(__nr_neigh, node2, list) \
+ hlist_for_each_entry_safe(__nr_neigh, node2, list, neigh_node)
+
+#define nr_node_for_each(__nr_node, list) \
+ hlist_for_each_entry(__nr_node, list, node_node)
+
+#define nr_node_for_each_safe(__nr_node, node2, list) \
+ hlist_for_each_entry_safe(__nr_node, node2, list, node_node)
+
+
+/*********************************************************************/
+
+/* af_netrom.c */
+extern int sysctl_netrom_default_path_quality;
+extern int sysctl_netrom_obsolescence_count_initialiser;
+extern int sysctl_netrom_network_ttl_initialiser;
+extern int sysctl_netrom_transport_timeout;
+extern int sysctl_netrom_transport_maximum_tries;
+extern int sysctl_netrom_transport_acknowledge_delay;
+extern int sysctl_netrom_transport_busy_delay;
+extern int sysctl_netrom_transport_requested_window_size;
+extern int sysctl_netrom_transport_no_activity_timeout;
+extern int sysctl_netrom_routing_control;
+extern int sysctl_netrom_link_fails_count;
+extern int sysctl_netrom_reset_circuit;
+
+int nr_rx_frame(struct sk_buff *, struct net_device *);
+void nr_destroy_socket(struct sock *);
+
+/* nr_dev.c */
+int nr_rx_ip(struct sk_buff *, struct net_device *);
+void nr_setup(struct net_device *);
+
+/* nr_in.c */
+int nr_process_rx_frame(struct sock *, struct sk_buff *);
+
+/* nr_loopback.c */
+void nr_loopback_init(void);
+void nr_loopback_clear(void);
+int nr_loopback_queue(struct sk_buff *);
+
+/* nr_out.c */
+void nr_output(struct sock *, struct sk_buff *);
+void nr_send_nak_frame(struct sock *);
+void nr_kick(struct sock *);
+void nr_transmit_buffer(struct sock *, struct sk_buff *);
+void nr_establish_data_link(struct sock *);
+void nr_enquiry_response(struct sock *);
+void nr_check_iframes_acked(struct sock *, unsigned short);
+
+/* nr_route.c */
+void nr_rt_device_down(struct net_device *);
+struct net_device *nr_dev_first(void);
+struct net_device *nr_dev_get(ax25_address *);
+int nr_rt_ioctl(unsigned int, void __user *);
+void nr_link_failed(ax25_cb *, int);
+int nr_route_frame(struct sk_buff *, ax25_cb *);
+extern const struct seq_operations nr_node_seqops;
+extern const struct seq_operations nr_neigh_seqops;
+void nr_rt_free(void);
+
+/* nr_subr.c */
+void nr_clear_queues(struct sock *);
+void nr_frames_acked(struct sock *, unsigned short);
+void nr_requeue_frames(struct sock *);
+int nr_validate_nr(struct sock *, unsigned short);
+int nr_in_rx_window(struct sock *, unsigned short);
+void nr_write_internal(struct sock *, int);
+
+void __nr_transmit_reply(struct sk_buff *skb, int mine, unsigned char cmdflags);
+
+/*
+ * This routine is called when a Connect Acknowledge with the Choke Flag
+ * set is needed to refuse a connection.
+ */
+#define nr_transmit_refusal(skb, mine) \
+do { \
+ __nr_transmit_reply((skb), (mine), NR_CONNACK | NR_CHOKE_FLAG); \
+} while (0)
+
+/*
+ * This routine is called when we don't have a circuit matching an incoming
+ * NET/ROM packet. This is an G8PZT Xrouter extension.
+ */
+#define nr_transmit_reset(skb, mine) \
+do { \
+ __nr_transmit_reply((skb), (mine), NR_RESET); \
+} while (0)
+
+void nr_disconnect(struct sock *, int);
+
+/* nr_timer.c */
+void nr_init_timers(struct sock *sk);
+void nr_start_heartbeat(struct sock *);
+void nr_start_t1timer(struct sock *);
+void nr_start_t2timer(struct sock *);
+void nr_start_t4timer(struct sock *);
+void nr_start_idletimer(struct sock *);
+void nr_stop_heartbeat(struct sock *);
+void nr_stop_t1timer(struct sock *);
+void nr_stop_t2timer(struct sock *);
+void nr_stop_t4timer(struct sock *);
+void nr_stop_idletimer(struct sock *);
+int nr_t1timer_running(struct sock *);
+
+/* sysctl_net_netrom.c */
+int nr_register_sysctl(void);
+void nr_unregister_sysctl(void);
+
+#endif