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authorDavid S. Miller <davem@sunset.davemloft.net>2007-07-09 22:23:51 -0700
committerDavid S. Miller <davem@sunset.davemloft.net>2007-07-16 04:03:23 -0700
commit4c521e422f2837b9652fa00a064a01d009f939b6 (patch)
treec9e9031fd2216cce89afe01840841fca0718f61f /drivers/net/sunvnet.h
parente53e97ce3c7119199d2788d8fd1618efa9c2d1eb (diff)
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[SPARC64]: Add Sun LDOM virtual network driver.
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/sunvnet.h')
-rw-r--r--drivers/net/sunvnet.h70
1 files changed, 70 insertions, 0 deletions
diff --git a/drivers/net/sunvnet.h b/drivers/net/sunvnet.h
new file mode 100644
index 0000000..1c88730
--- /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 */