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author | David S. Miller <davem@sunset.davemloft.net> | 2007-07-10 05:23:51 (GMT) |
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committer | David S. Miller <davem@sunset.davemloft.net> | 2007-07-16 11:03:23 (GMT) |
commit | 4c521e422f2837b9652fa00a064a01d009f939b6 (patch) | |
tree | c9e9031fd2216cce89afe01840841fca0718f61f /drivers/net/sunvnet.h | |
parent | e53e97ce3c7119199d2788d8fd1618efa9c2d1eb (diff) | |
download | linux-4c521e422f2837b9652fa00a064a01d009f939b6.tar.xz |
[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.h | 70 |
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 */ |