3 files changed, 19 insertions, 0 deletions

diff --git a/sys/net/if.h b/sys/net/if.h
index 83116b968257..6cc5522118c7 100644
--- a/sys/net/if.h
+++ b/sys/net/if.h
@@ -131,6 +131,15 @@ struct if_data {
 #define	IFF_ALTPHYS	IFF_LINK2	/* use alternate physical connection */
 #define	IFF_MULTICAST	0x8000		/* supports multicast */
 
+/*
+ * The following flag(s) ought to go in if_flags, but we cannot change
+ * struct ifnet because of binary compatibility, so we store them in
+ * if_ipending, which is not used so far.
+ * If possible, make sure the value is not conflicting with other
+ * IFF flags, so we have an easier time when we want to merge them.
+ */
+#define	IFF_POLLING	0x10000		/* Interface is in polling mode. */
+
 /* flags set internally only: */
 #define	IFF_CANTCHANGE \
 	(IFF_BROADCAST|IFF_POINTOPOINT|IFF_RUNNING|IFF_OACTIVE|\
diff --git a/sys/net/if_var.h b/sys/net/if_var.h
index 58d37804620f..dacea6319072 100644
--- a/sys/net/if_var.h
+++ b/sys/net/if_var.h
@@ -459,6 +459,15 @@ int	if_clone_destroy __P((const char *));
 #define IF_LLADDR(ifp)							\
     LLADDR((struct sockaddr_dl *) ifaddr_byindex((ifp)->if_index)->ifa_addr)
 
+#ifdef DEVICE_POLLING
+enum poll_cmd {	POLL_ONLY, POLL_AND_CHECK_STATUS, POLL_DEREGISTER };
+
+typedef	void poll_handler_t __P((struct ifnet *ifp,
+		enum poll_cmd cmd, int count));
+int    ether_poll_register __P((poll_handler_t *h, struct ifnet *ifp));
+int    ether_poll_deregister __P((struct ifnet *ifp));
+#endif /* DEVICE_POLLING */
+
 #endif /* _KERNEL */
 
 #endif /* !_NET_IF_VAR_H_ */
diff --git a/sys/net/netisr.h b/sys/net/netisr.h
index 621cf2268b96..35e8cc132252 100644
--- a/sys/net/netisr.h
+++ b/sys/net/netisr.h
@@ -52,6 +52,7 @@
  * interrupt used for scheduling the network code to calls
  * on the lowest level routine of each protocol.
  */
+#define	NETISR_POLL	0		/* polling callback, must be first */
 #define	NETISR_IP	2		/* same as AF_INET */
 #define	NETISR_NS	6		/* same as AF_NS */
 #define	NETISR_ATALK    16              /* same as AF_APPLETALK */