| Aaron Young | 31762ea | 2016-03-15 11:35:37 -0700 | [diff] [blame^] | 1 | #ifndef _SUNVNETCOMMON_H |
| 2 | #define _SUNVNETCOMMON_H |
| 3 | |
| 4 | #include <linux/interrupt.h> |
| 5 | |
| 6 | /* length of time (or less) we expect pending descriptors to be marked |
| 7 | * as VIO_DESC_DONE and skbs ready to be freed |
| 8 | */ |
| 9 | #define VNET_CLEAN_TIMEOUT ((HZ / 100) + 1) |
| 10 | |
| 11 | #define VNET_MAXPACKET (65535ULL + ETH_HLEN + VLAN_HLEN) |
| 12 | #define VNET_TX_RING_SIZE 512 |
| 13 | #define VNET_TX_WAKEUP_THRESH(dr) ((dr)->pending / 4) |
| 14 | |
| 15 | #define VNET_MINTSO 2048 /* VIO protocol's minimum TSO len */ |
| 16 | #define VNET_MAXTSO 65535 /* VIO protocol's maximum TSO len */ |
| 17 | |
| 18 | /* VNET packets are sent in buffers with the first 6 bytes skipped |
| 19 | * so that after the ethernet header the IPv4/IPv6 headers are aligned |
| 20 | * properly. |
| 21 | */ |
| 22 | #define VNET_PACKET_SKIP 6 |
| 23 | |
| 24 | #define VNET_MAXCOOKIES (VNET_MAXPACKET / PAGE_SIZE + 1) |
| 25 | |
| 26 | #define VNET_MAX_TXQS 16 |
| 27 | |
| 28 | struct vnet_tx_entry { |
| 29 | struct sk_buff *skb; |
| 30 | unsigned int ncookies; |
| 31 | struct ldc_trans_cookie cookies[VNET_MAXCOOKIES]; |
| 32 | }; |
| 33 | |
| 34 | struct vnet; |
| 35 | struct vnet_port { |
| 36 | struct vio_driver_state vio; |
| 37 | |
| 38 | struct hlist_node hash; |
| 39 | u8 raddr[ETH_ALEN]; |
| 40 | unsigned switch_port:1; |
| 41 | unsigned tso:1; |
| 42 | unsigned __pad:14; |
| 43 | |
| 44 | struct vnet *vp; |
| 45 | |
| 46 | struct vnet_tx_entry tx_bufs[VNET_TX_RING_SIZE]; |
| 47 | |
| 48 | struct list_head list; |
| 49 | |
| 50 | u32 stop_rx_idx; |
| 51 | bool stop_rx; |
| 52 | bool start_cons; |
| 53 | |
| 54 | struct timer_list clean_timer; |
| 55 | |
| 56 | u64 rmtu; |
| 57 | u16 tsolen; |
| 58 | |
| 59 | struct napi_struct napi; |
| 60 | u32 napi_stop_idx; |
| 61 | bool napi_resume; |
| 62 | int rx_event; |
| 63 | u16 q_index; |
| 64 | }; |
| 65 | |
| 66 | static inline struct vnet_port *to_vnet_port(struct vio_driver_state *vio) |
| 67 | { |
| 68 | return container_of(vio, struct vnet_port, vio); |
| 69 | } |
| 70 | |
| 71 | #define VNET_PORT_HASH_SIZE 16 |
| 72 | #define VNET_PORT_HASH_MASK (VNET_PORT_HASH_SIZE - 1) |
| 73 | |
| 74 | static inline unsigned int vnet_hashfn(u8 *mac) |
| 75 | { |
| 76 | unsigned int val = mac[4] ^ mac[5]; |
| 77 | |
| 78 | return val & (VNET_PORT_HASH_MASK); |
| 79 | } |
| 80 | |
| 81 | struct vnet_mcast_entry { |
| 82 | u8 addr[ETH_ALEN]; |
| 83 | u8 sent; |
| 84 | u8 hit; |
| 85 | struct vnet_mcast_entry *next; |
| 86 | }; |
| 87 | |
| 88 | struct vnet { |
| 89 | /* Protects port_list and port_hash. */ |
| 90 | spinlock_t lock; |
| 91 | |
| 92 | struct net_device *dev; |
| 93 | |
| 94 | u32 msg_enable; |
| 95 | |
| 96 | struct list_head port_list; |
| 97 | |
| 98 | struct hlist_head port_hash[VNET_PORT_HASH_SIZE]; |
| 99 | |
| 100 | struct vnet_mcast_entry *mcast_list; |
| 101 | |
| 102 | struct list_head list; |
| 103 | u64 local_mac; |
| 104 | |
| 105 | int nports; |
| 106 | }; |
| 107 | |
| 108 | /* Common funcs */ |
| 109 | void sunvnet_clean_timer_expire_common(unsigned long port0); |
| 110 | int sunvnet_open_common(struct net_device *dev); |
| 111 | int sunvnet_close_common(struct net_device *dev); |
| 112 | void sunvnet_set_rx_mode_common(struct net_device *dev); |
| 113 | int sunvnet_set_mac_addr_common(struct net_device *dev, void *p); |
| 114 | void sunvnet_tx_timeout_common(struct net_device *dev); |
| 115 | int sunvnet_change_mtu_common(struct net_device *dev, int new_mtu); |
| 116 | int sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev); |
| 117 | u16 sunvnet_select_queue_common(struct net_device *dev, |
| 118 | struct sk_buff *skb, |
| 119 | void *accel_priv, |
| 120 | select_queue_fallback_t fallback); |
| 121 | #ifdef CONFIG_NET_POLL_CONTROLLER |
| 122 | void sunvnet_poll_controller_common(struct net_device *dev); |
| 123 | #endif |
| 124 | void sunvnet_event_common(void *arg, int event); |
| 125 | int sunvnet_send_attr_common(struct vio_driver_state *vio); |
| 126 | int sunvnet_handle_attr_common(struct vio_driver_state *vio, void *arg); |
| 127 | void sunvnet_handshake_complete_common(struct vio_driver_state *vio); |
| 128 | int sunvnet_poll_common(struct napi_struct *napi, int budget); |
| 129 | void sunvnet_port_free_tx_bufs_common(struct vnet_port *port); |
| 130 | void sunvnet_port_add_txq_common(struct vnet_port *port); |
| 131 | void sunvnet_port_rm_txq_common(struct vnet_port *port); |
| 132 | |
| 133 | #endif /* _SUNVNETCOMMON_H */ |