[SPARC64]: Add Sun LDOM virtual network driver.

Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 70 insertions, 0 deletions

diff --git a/drivers/net/sunvnet.h b/drivers/net/sunvnet.h
new file mode 100644
index 000000000000..1c887302d46d
--- /dev/null
+++ b/drivers/net/sunvnet.h
@@ -0,0 +1,70 @@
+#ifndef _SUNVNET_H
+#define _SUNVNET_H
+
+#define DESC_NCOOKIES(entry_size)       \
+        ((entry_size) - sizeof(struct vio_net_desc))
+
+/* length of time before we decide the hardware is borked,
+ * and dev->tx_timeout() should be called to fix the problem
+ */
+#define VNET_TX_TIMEOUT                 (5 * HZ)
+
+#define VNET_TX_RING_SIZE               512
+#define VNET_TX_WAKEUP_THRESH(dr)       ((dr)->pending / 4)
+
+/* VNET packets are sent in buffers with the first 6 bytes skipped
+ * so that after the ethernet header the IPv4/IPv6 headers are aligned
+ * properly.
+ */
+#define VNET_PACKET_SKIP                6
+
+struct vnet_tx_entry {
+        void                    *buf;
+        unsigned int            ncookies;
+        struct ldc_trans_cookie cookies[2];
+};
+
+struct vnet;
+struct vnet_port {
+        struct vio_driver_state vio;
+
+        struct hlist_node       hash;
+        u8                      raddr[ETH_ALEN];
+
+        struct vnet             *vp;
+
+        struct vnet_tx_entry    tx_bufs[VNET_TX_RING_SIZE];
+
+        struct list_head        list;
+};
+
+static inline struct vnet_port *to_vnet_port(struct vio_driver_state *vio)
+{
+        return container_of(vio, struct vnet_port, vio);
+}
+
+#define VNET_PORT_HASH_SIZE     16
+#define VNET_PORT_HASH_MASK     (VNET_PORT_HASH_SIZE - 1)
+
+static inline unsigned int vnet_hashfn(u8 *mac)
+{
+        unsigned int val = mac[4] ^ mac[5];
+
+        return val & (VNET_PORT_HASH_MASK);
+}
+
+struct vnet {
+        /* Protects port_list and port_hash.  */
+        spinlock_t              lock;
+
+        struct net_device       *dev;
+
+        u32                     msg_enable;
+        struct vio_dev          *vdev;
+
+        struct list_head        port_list;
+
+        struct hlist_head       port_hash[VNET_PORT_HASH_SIZE];
+};
+
+#endif /* _SUNVNET_H */