Merge hera.kernel.org:/home/acme/BK/x25-2.5.old

into hera.kernel.org:/home/acme/BK/x25-2.5

2 files changed, 79 insertions, 42 deletions

diff --git a/include/net/lapb.h b/include/net/lapb.h
index 7cc9b3452abb..50292be77a71 100644
--- a/include/net/lapb.h
+++ b/include/net/lapb.h
@@ -78,8 +78,8 @@ struct lapb_frame {
 /*
  *	The per LAPB connection control structure.
  */
-typedef struct lapb_cb {
-	struct lapb_cb		*next;
+struct lapb_cb {
+	struct list_head	node;
 	void			*token;
 
 	/* Link status fields */
@@ -100,43 +100,45 @@ typedef struct lapb_cb {
 	/* FRMR control information */
 	struct lapb_frame	frmr_data;
 	unsigned char		frmr_type;
-} lapb_cb;
+
+	atomic_t		refcnt;
+};
 
 /* lapb_iface.c */
-extern void lapb_connect_confirmation(lapb_cb *, int);
-extern void lapb_connect_indication(lapb_cb *, int);
-extern void lapb_disconnect_confirmation(lapb_cb *, int);
-extern void lapb_disconnect_indication(lapb_cb *, int);
-extern int  lapb_data_indication(lapb_cb *, struct sk_buff *);
-extern int  lapb_data_transmit(lapb_cb *, struct sk_buff *);
+extern void lapb_connect_confirmation(struct lapb_cb *lapb, int);
+extern void lapb_connect_indication(struct lapb_cb *lapb, int);
+extern void lapb_disconnect_confirmation(struct lapb_cb *lapb, int);
+extern void lapb_disconnect_indication(struct lapb_cb *lapb, int);
+extern int  lapb_data_indication(struct lapb_cb *lapb, struct sk_buff *);
+extern int  lapb_data_transmit(struct lapb_cb *lapb, struct sk_buff *);
 
 /* lapb_in.c */
-extern void lapb_data_input(lapb_cb *, struct sk_buff *);
+extern void lapb_data_input(struct lapb_cb *lapb, struct sk_buff *);
 
 /* lapb_out.c */
-extern void lapb_kick(lapb_cb *);
-extern void lapb_transmit_buffer(lapb_cb *, struct sk_buff *, int);
-extern void lapb_establish_data_link(lapb_cb *);
-extern void lapb_enquiry_response(lapb_cb *);
-extern void lapb_timeout_response(lapb_cb *);
-extern void lapb_check_iframes_acked(lapb_cb *, unsigned short);
-extern void lapb_check_need_response(lapb_cb *, int, int);
+extern void lapb_kick(struct lapb_cb *lapb);
+extern void lapb_transmit_buffer(struct lapb_cb *lapb, struct sk_buff *, int);
+extern void lapb_establish_data_link(struct lapb_cb *lapb);
+extern void lapb_enquiry_response(struct lapb_cb *lapb);
+extern void lapb_timeout_response(struct lapb_cb *lapb);
+extern void lapb_check_iframes_acked(struct lapb_cb *lapb, unsigned short);
+extern void lapb_check_need_response(struct lapb_cb *lapb, int, int);
 
 /* lapb_subr.c */
-extern void lapb_clear_queues(lapb_cb *);
-extern void lapb_frames_acked(lapb_cb *, unsigned short);
-extern void lapb_requeue_frames(lapb_cb *);
-extern int  lapb_validate_nr(lapb_cb *, unsigned short);
-extern void lapb_decode(lapb_cb *, struct sk_buff *, struct lapb_frame *);
-extern void lapb_send_control(lapb_cb *, int, int, int);
-extern void lapb_transmit_frmr(lapb_cb *);
+extern void lapb_clear_queues(struct lapb_cb *lapb);
+extern void lapb_frames_acked(struct lapb_cb *lapb, unsigned short);
+extern void lapb_requeue_frames(struct lapb_cb *lapb);
+extern int  lapb_validate_nr(struct lapb_cb *lapb, unsigned short);
+extern void lapb_decode(struct lapb_cb *lapb, struct sk_buff *, struct lapb_frame *);
+extern void lapb_send_control(struct lapb_cb *lapb, int, int, int);
+extern void lapb_transmit_frmr(struct lapb_cb *lapb);
 
 /* lapb_timer.c */
-extern void lapb_start_t1timer(lapb_cb *);
-extern void lapb_start_t2timer(lapb_cb *);
-extern void lapb_stop_t1timer(lapb_cb *);
-extern void lapb_stop_t2timer(lapb_cb *);
-extern int  lapb_t1timer_running(lapb_cb *);
+extern void lapb_start_t1timer(struct lapb_cb *lapb);
+extern void lapb_start_t2timer(struct lapb_cb *lapb);
+extern void lapb_stop_t1timer(struct lapb_cb *lapb);
+extern void lapb_stop_t2timer(struct lapb_cb *lapb);
+extern int  lapb_t1timer_running(struct lapb_cb *lapb);
 
 /*
  * Debug levels.
diff --git a/include/net/x25.h b/include/net/x25.h
index 4d5c3a84e9dc..a043f5e093c8 100644
--- a/include/net/x25.h
+++ b/include/net/x25.h
@@ -101,26 +101,36 @@ enum {
 #define	X25_MAX_FAC_LEN		20		/* Plenty to spare */
 #define	X25_MAX_CUD_LEN		128
 
+/**
+ *	struct x25_route - x25 routing entry
+ *	@node - entry in x25_list_lock
+ *	@address - Start of address range
+ *	@sigdigits - Number of sig digits
+ *	@dev - More than one for MLP
+ *	@refcnt - reference counter
+ */
 struct x25_route {
-	struct x25_route	*next;
-	x25_address		address;	/* Start of address range */
-	unsigned int		sigdigits;	/* Number of sig digits */
-	struct net_device		*dev;		/* More than one for MLP */
+	struct list_head	node;		
+	struct x25_address	address;
+	unsigned int		sigdigits;
+	struct net_device	*dev;
+	atomic_t		refcnt;
 };
 
 struct x25_neigh {
-	struct x25_neigh	*next;
-	struct net_device		*dev;
+	struct list_head	node;
+	struct net_device	*dev;
 	unsigned int		state;
 	unsigned int		extended;
 	struct sk_buff_head	queue;
 	unsigned long		t20;
 	struct timer_list	t20timer;
 	unsigned long		global_facil_mask;
+	atomic_t		refcnt;
 };
 
-typedef struct {
-	x25_address		source_addr, dest_addr;
+struct x25_opt {
+	struct x25_address	source_addr, dest_addr;
 	struct x25_neigh	*neighbour;
 	unsigned int		lci;
 	unsigned char		state, condition, qbitincl, intflag;
@@ -137,9 +147,9 @@ typedef struct {
 	struct x25_facilities	facilities;
 	struct x25_calluserdata	calluserdata;
 	unsigned long 		vc_facil_mask;	/* inc_call facilities mask */
-} x25_cb;
+};
 
-#define x25_sk(__sk) ((x25_cb *)(__sk)->protinfo)
+#define x25_sk(__sk) ((struct x25_opt *)(__sk)->protinfo)
 
 /* af_x25.c */
 extern int  sysctl_x25_restart_request_timeout;
@@ -148,8 +158,10 @@ extern int  sysctl_x25_reset_request_timeout;
 extern int  sysctl_x25_clear_request_timeout;
 extern int  sysctl_x25_ack_holdback_timeout;
 
-extern int  x25_addr_ntoa(unsigned char *, x25_address *, x25_address *);
-extern int  x25_addr_aton(unsigned char *, x25_address *, x25_address *);
+extern int  x25_addr_ntoa(unsigned char *, struct x25_address *,
+			  struct x25_address *);
+extern int  x25_addr_aton(unsigned char *, struct x25_address *,
+			  struct x25_address *);
 extern unsigned int x25_new_lci(struct x25_neigh *);
 extern struct sock *x25_find_socket(unsigned int, struct x25_neigh *);
 extern void x25_destroy_socket(struct sock *);
@@ -188,19 +200,42 @@ extern int  x25_subscr_ioctl(unsigned int, void *);
 extern struct x25_neigh *x25_get_neigh(struct net_device *);
 extern void x25_link_free(void);
 
+/* x25_neigh.c */
+static __inline__ void x25_neigh_hold(struct x25_neigh *nb)
+{
+	atomic_inc(&nb->refcnt);
+}
+
+static __inline__ void x25_neigh_put(struct x25_neigh *nb)
+{
+	if (atomic_dec_and_test(&nb->refcnt))
+		kfree(nb);
+}
+
 /* x25_out.c */
 extern  int x25_output(struct sock *, struct sk_buff *);
 extern void x25_kick(struct sock *);
 extern void x25_enquiry_response(struct sock *);
 
 /* x25_route.c */
-extern struct net_device *x25_get_route(x25_address *);
+extern struct x25_route *x25_get_route(struct x25_address *addr);
 extern struct net_device *x25_dev_get(char *);
 extern void x25_route_device_down(struct net_device *);
 extern int  x25_route_ioctl(unsigned int, void *);
 extern int  x25_routes_get_info(char *, char **, off_t, int);
 extern void x25_route_free(void);
 
+static __inline__ void x25_route_hold(struct x25_route *rt)
+{
+	atomic_inc(&rt->refcnt);
+}
+
+static __inline__ void x25_route_put(struct x25_route *rt)
+{
+	if (atomic_dec_and_test(&rt->refcnt))
+		kfree(rt);
+}
+
 /* x25_subr.c */
 extern void x25_clear_queues(struct sock *);
 extern void x25_frames_acked(struct sock *, unsigned short);