Add qemu 2.4.0

[kvmfornfv.git] / qemu / roms / ipxe / src / include / ipxe / neighbour.h

diff --git a/qemu/roms/ipxe/src/include/ipxe/neighbour.h b/qemu/roms/ipxe/src/include/ipxe/neighbour.h
new file mode 100644 (file)
index 0000000..f2a3946
--- /dev/null
+++ b/qemu/roms/ipxe/src/include/ipxe/neighbour.h
@@ -0,0 +1,88 @@
+#ifndef _IPXE_NEIGHBOUR_H
+#define _IPXE_NEIGHBOUR_H
+
+/** @file
+ *
+ * Neighbour discovery
+ *
+ */
+
+FILE_LICENCE ( GPL2_OR_LATER );
+
+#include <stdint.h>
+#include <ipxe/refcnt.h>
+#include <ipxe/list.h>
+#include <ipxe/netdevice.h>
+#include <ipxe/retry.h>
+
+/** A neighbour discovery protocol */
+struct neighbour_discovery {
+       /** Name */
+       const char *name;
+       /**
+        * Transmit neighbour discovery request
+        *
+        * @v netdev            Network device
+        * @v net_protocol      Network-layer protocol
+        * @v net_dest          Destination network-layer address
+        * @v net_source        Source network-layer address
+        * @ret rc              Return status code
+        */
+       int ( * tx_request ) ( struct net_device *netdev,
+                              struct net_protocol *net_protocol,
+                              const void *net_dest, const void *net_source );
+};
+
+/** A neighbour cache entry */
+struct neighbour {
+       /** Reference count */
+       struct refcnt refcnt;
+       /** List of neighbour cache entries */
+       struct list_head list;
+
+       /** Network device */
+       struct net_device *netdev;
+       /** Network-layer protocol */
+       struct net_protocol *net_protocol;
+       /** Network-layer destination address */
+       uint8_t net_dest[MAX_NET_ADDR_LEN];
+       /** Link-layer destination address */
+       uint8_t ll_dest[MAX_LL_ADDR_LEN];
+
+       /** Neighbour discovery protocol (if any) */
+       struct neighbour_discovery *discovery;
+       /** Network-layer source address (if any) */
+       uint8_t net_source[MAX_NET_ADDR_LEN];
+       /** Retransmission timer */
+       struct retry_timer timer;
+
+       /** Pending I/O buffers */
+       struct list_head tx_queue;
+};
+
+/**
+ * Test if neighbour cache entry has a valid link-layer address
+ *
+ * @v neighbour                Neighbour cache entry
+ * @ret has_ll_dest    Neighbour cache entry has a valid link-layer address
+ */
+static inline __attribute__ (( always_inline )) int
+neighbour_has_ll_dest ( struct neighbour *neighbour ) {
+       return ( ! timer_running ( &neighbour->timer ) );
+}
+
+extern struct list_head neighbours;
+
+extern int neighbour_tx ( struct io_buffer *iobuf, struct net_device *netdev,
+                         struct net_protocol *net_protocol,
+                         const void *net_dest,
+                         struct neighbour_discovery *discovery,
+                         const void *net_source, const void *ll_source );
+extern int neighbour_update ( struct net_device *netdev,
+                             struct net_protocol *net_protocol,
+                             const void *net_dest, const void *ll_dest );
+extern int neighbour_define ( struct net_device *netdev,
+                             struct net_protocol *net_protocol,
+                             const void *net_dest, const void *ll_dest );
+
+#endif /* _IPXE_NEIGHBOUR_H */