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 36 /* Structure to describe a vnet-port or vsw-port in the MD. 37 * If the vsw bit is set, this structure represents a vswitch 38 * port, and the net_device can be found from ->dev. If the 39 * vsw bit is not set, the net_device is available from ->vp->dev. 40 * See the VNET_PORT_TO_NET_DEVICE macro below. 41 */ 42 struct vnet_port { 43 struct vio_driver_state vio; 44 45 struct hlist_node hash; 46 u8 raddr[ETH_ALEN]; 47 unsigned switch_port:1; 48 unsigned tso:1; 49 unsigned vsw:1; 50 unsigned __pad:13; 51 52 struct vnet *vp; 53 struct net_device *dev; 54 55 struct vnet_tx_entry tx_bufs[VNET_TX_RING_SIZE]; 56 57 struct list_head list; 58 59 u32 stop_rx_idx; 60 bool stop_rx; 61 bool start_cons; 62 63 struct timer_list clean_timer; 64 65 u64 rmtu; 66 u16 tsolen; 67 68 struct napi_struct napi; 69 u32 napi_stop_idx; 70 bool napi_resume; 71 int rx_event; 72 u16 q_index; 73 }; 74 75 static inline struct vnet_port *to_vnet_port(struct vio_driver_state *vio) 76 { 77 return container_of(vio, struct vnet_port, vio); 78 } 79 80 #define VNET_PORT_HASH_SIZE 16 81 #define VNET_PORT_HASH_MASK (VNET_PORT_HASH_SIZE - 1) 82 83 static inline unsigned int vnet_hashfn(u8 *mac) 84 { 85 unsigned int val = mac[4] ^ mac[5]; 86 87 return val & (VNET_PORT_HASH_MASK); 88 } 89 90 struct vnet_mcast_entry { 91 u8 addr[ETH_ALEN]; 92 u8 sent; 93 u8 hit; 94 struct vnet_mcast_entry *next; 95 }; 96 97 struct vnet { 98 /* Protects port_list and port_hash. */ 99 spinlock_t lock; 100 101 struct net_device *dev; 102 103 u32 msg_enable; 104 105 struct list_head port_list; 106 107 struct hlist_head port_hash[VNET_PORT_HASH_SIZE]; 108 109 struct vnet_mcast_entry *mcast_list; 110 111 struct list_head list; 112 u64 local_mac; 113 114 int nports; 115 }; 116 117 /* Def used by common code to get the net_device from the proper location */ 118 #define VNET_PORT_TO_NET_DEVICE(__port) \ 119 ((__port)->vsw ? (__port)->dev : (__port)->vp->dev) 120 121 /* Common funcs */ 122 void sunvnet_clean_timer_expire_common(unsigned long port0); 123 int sunvnet_open_common(struct net_device *dev); 124 int sunvnet_close_common(struct net_device *dev); 125 void sunvnet_set_rx_mode_common(struct net_device *dev, struct vnet *vp); 126 int sunvnet_set_mac_addr_common(struct net_device *dev, void *p); 127 void sunvnet_tx_timeout_common(struct net_device *dev); 128 int sunvnet_change_mtu_common(struct net_device *dev, int new_mtu); 129 int sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev, 130 struct vnet_port *(*vnet_tx_port) 131 (struct sk_buff *, struct net_device *)); 132 #ifdef CONFIG_NET_POLL_CONTROLLER 133 void sunvnet_poll_controller_common(struct net_device *dev, struct vnet *vp); 134 #endif 135 void sunvnet_event_common(void *arg, int event); 136 int sunvnet_send_attr_common(struct vio_driver_state *vio); 137 int sunvnet_handle_attr_common(struct vio_driver_state *vio, void *arg); 138 void sunvnet_handshake_complete_common(struct vio_driver_state *vio); 139 int sunvnet_poll_common(struct napi_struct *napi, int budget); 140 void sunvnet_port_free_tx_bufs_common(struct vnet_port *port); 141 bool sunvnet_port_is_up_common(struct vnet_port *vnet); 142 void sunvnet_port_add_txq_common(struct vnet_port *port); 143 void sunvnet_port_rm_txq_common(struct vnet_port *port); 144 145 #endif /* _SUNVNETCOMMON_H */ 146