Implement a mechanism by which ATM drivers can inform interested

parts of the system about certain kinds of events, like changes
in the ABR rate, changes in the carrier state, PVC changes. The
main consumers of these events are the harp(4) pseudo-driver
and the ILMI daemon via ng_atm(4).

1 files changed, 70 insertions, 0 deletions

diff --git a/sys/net/if_atm.h b/sys/net/if_atm.h
index 1ec3bd2..93fcf9f 100644
--- a/sys/net/if_atm.h
+++ b/sys/net/if_atm.h
@@ -261,6 +261,38 @@ struct atmllc {
 	(X)->type[1] = ((V) & 0xff);		\
     } while (0)
 
+/*
+ * Events that are emitted by the driver. Currently the only consumer
+ * of this is the netgraph node.
+ */
+#define	ATMEV_FLOW_CONTROL	0x0001	/* channel busy state changed */
+#define	ATMEV_IFSTATE_CHANGED	0x0002	/* up/down or carrier */
+#define	ATMEV_VCC_CHANGED	0x0003	/* PVC deleted/create */
+#define	ATMEV_ACR_CHANGED	0x0004	/* ABR ACR has changed */
+
+struct atmev_flow_control {
+	uint16_t	vpi;		/* channel that is changed */
+	uint16_t	vci;
+	u_int		busy : 1;	/* != 0 -> ATM layer busy */
+};
+
+struct atmev_ifstate_changed {
+	u_int		running : 1;	/* interface is running now */
+	u_int		carrier : 1;	/* carrier detected (or not) */
+};
+
+struct atmev_vcc_changed {
+	uint16_t	vpi;		/* channel that is changed */
+	uint16_t	vci;
+	u_int		up : 1;		/* 1 - created, 0 - deleted */
+};
+
+struct atmev_acr_changed {
+	uint16_t	vpi;		/* channel that is changed */
+	uint16_t	vci;
+	uint32_t	acr;		/* new ACR */
+};
+
 #ifdef _KERNEL
 void	atm_ifattach(struct ifnet *);
 void	atm_ifdetach(struct ifnet *);
@@ -270,4 +302,42 @@ int	atm_output(struct ifnet *, struct mbuf *, struct sockaddr *,
 	    struct rtentry *);
 struct atmio_vcctable *atm_getvccs(struct atmio_vcc **, u_int, u_int,
 	    struct mtx *, int);
+
+void	atm_event(struct ifnet *, u_int, void *);
+
+#define	ATMEV_SEND_FLOW_CONTROL(ATMIF, VPI, VCI, BUSY)			\
+	do {								\
+		struct atmev_flow_control _arg;				\
+		_arg.vpi = (VPI);					\
+		_arg.vci = (VCI);					\
+		_arg.busy = (BUSY);					\
+		atm_event(&(ATMIF)->ifnet, ATMEV_FLOW_CONTROL, &_arg);	\
+	} while (0)
+
+#define	ATMEV_SEND_VCC_CHANGED(ATMIF, VPI, VCI, UP)			\
+	do {								\
+		struct atmev_vcc_changed _arg;				\
+		_arg.vpi = (VPI);					\
+		_arg.vci = (VCI);					\
+		_arg.up = (UP);						\
+		atm_event(&(ATMIF)->ifnet, ATMEV_VCC_CHANGED, &_arg);	\
+	} while (0)
+
+#define	ATMEV_SEND_IFSTATE_CHANGED(ATMIF, CARRIER)			\
+	do {								\
+		struct atmev_ifstate_changed _arg;			\
+		_arg.running = (((ATMIF)->ifnet.if_flags &		\
+		    IFF_RUNNING) != 0);					\
+		_arg.carrier = ((CARRIER) != 0);			\
+		atm_event(&(ATMIF)->ifnet, ATMEV_IFSTATE_CHANGED, &_arg); \
+	} while (0)
+
+#define	ATMEV_SEND_ACR_CHANGED(ATMIF, VPI, VCI, ACR)			\
+	do {								\
+		struct atmev_acr_changed _arg;				\
+		_arg.vpi = (VPI);					\
+		_arg.vci = (VCI);					\
+		_arg.acr= (ACR);					\
+		atm_event(&(ATMIF)->ifnet, ATMEV_ACR_CHANGED, &_arg);	\
+	} while (0)
 #endif