sunvnet.h
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#ifndef _SUNVNET_H
#define _SUNVNET_H
#include <linux/interrupt.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)
/* length of time (or less) we expect pending descriptors to be marked
* as VIO_DESC_DONE and skbs ready to be freed
*/
#define VNET_CLEAN_TIMEOUT ((HZ/100)+1)
#define VNET_MAXPACKET (65535ULL + ETH_HLEN + VLAN_HLEN)
#define VNET_TX_RING_SIZE 512
#define VNET_TX_WAKEUP_THRESH(dr) ((dr)->pending / 4)
#define VNET_MINTSO 2048 /* VIO protocol's minimum TSO len */
#define VNET_MAXTSO 65535 /* VIO protocol's maximum TSO len */
/* 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
#define VNET_MAXCOOKIES (VNET_MAXPACKET/PAGE_SIZE + 1)
struct vnet_tx_entry {
struct sk_buff *skb;
unsigned int ncookies;
struct ldc_trans_cookie cookies[VNET_MAXCOOKIES];
};
struct vnet;
struct vnet_port {
struct vio_driver_state vio;
struct hlist_node hash;
u8 raddr[ETH_ALEN];
unsigned switch_port:1;
unsigned tso:1;
unsigned __pad:14;
struct vnet *vp;
struct vnet_tx_entry tx_bufs[VNET_TX_RING_SIZE];
struct list_head list;
u32 stop_rx_idx;
bool stop_rx;
bool start_cons;
struct timer_list clean_timer;
u64 rmtu;
u16 tsolen;
struct napi_struct napi;
u32 napi_stop_idx;
bool napi_resume;
int rx_event;
u16 q_index;
};
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_mcast_entry {
u8 addr[ETH_ALEN];
u8 sent;
u8 hit;
struct vnet_mcast_entry *next;
};
struct vnet {
/* Protects port_list and port_hash. */
spinlock_t lock;
struct net_device *dev;
u32 msg_enable;
struct list_head port_list;
struct hlist_head port_hash[VNET_PORT_HASH_SIZE];
struct vnet_mcast_entry *mcast_list;
struct list_head list;
u64 local_mac;
int nports;
};
#endif /* _SUNVNET_H */