mirror of
https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-22 21:39:46 +07:00
368e36ed4c
This patch adds TSO support for the sunvnet driver. Signed-off-by: David L Stevens <david.stevens@oracle.com> Signed-off-by: David S. Miller <davem@davemloft.net>
115 lines
2.3 KiB
C
115 lines
2.3 KiB
C
#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 */
|