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 #define VNET_MAX_MTU 65535 19 20 /* VNET packets are sent in buffers with the first 6 bytes skipped 21 * so that after the ethernet header the IPv4/IPv6 headers are aligned 22 * properly. 23 */ 24 #define VNET_PACKET_SKIP 6 25 26 #define VNET_MAXCOOKIES (VNET_MAXPACKET / PAGE_SIZE + 1) 27 28 #define VNET_MAX_TXQS 16 29 30 struct vnet_tx_entry { 31 struct sk_buff *skb; 32 unsigned int ncookies; 33 struct ldc_trans_cookie cookies[VNET_MAXCOOKIES]; 34 }; 35 36 struct vnet; 37 38 /* Structure to describe a vnet-port or vsw-port in the MD. 39 * If the vsw bit is set, this structure represents a vswitch 40 * port, and the net_device can be found from ->dev. If the 41 * vsw bit is not set, the net_device is available from ->vp->dev. 42 * See the VNET_PORT_TO_NET_DEVICE macro below. 43 */ 44 struct vnet_port { 45 struct vio_driver_state vio; 46 47 struct hlist_node hash; 48 u8 raddr[ETH_ALEN]; 49 unsigned switch_port:1; 50 unsigned tso:1; 51 unsigned vsw:1; 52 unsigned __pad:13; 53 54 struct vnet *vp; 55 struct net_device *dev; 56 57 struct vnet_tx_entry tx_bufs[VNET_TX_RING_SIZE]; 58 59 struct list_head list; 60 61 u32 stop_rx_idx; 62 bool stop_rx; 63 bool start_cons; 64 65 struct timer_list clean_timer; 66 67 u64 rmtu; 68 u16 tsolen; 69 70 struct napi_struct napi; 71 u32 napi_stop_idx; 72 bool napi_resume; 73 int rx_event; 74 u16 q_index; 75 }; 76 77 static inline struct vnet_port *to_vnet_port(struct vio_driver_state *vio) 78 { 79 return container_of(vio, struct vnet_port, vio); 80 } 81 82 #define VNET_PORT_HASH_SIZE 16 83 #define VNET_PORT_HASH_MASK (VNET_PORT_HASH_SIZE - 1) 84 85 static inline unsigned int vnet_hashfn(u8 *mac) 86 { 87 unsigned int val = mac[4] ^ mac[5]; 88 89 return val & (VNET_PORT_HASH_MASK); 90 } 91 92 struct vnet_mcast_entry { 93 u8 addr[ETH_ALEN]; 94 u8 sent; 95 u8 hit; 96 struct vnet_mcast_entry *next; 97 }; 98 99 struct vnet { 100 /* Protects port_list and port_hash. */ 101 spinlock_t lock; 102 103 struct net_device *dev; 104 105 u32 msg_enable; 106 107 struct list_head port_list; 108 109 struct hlist_head port_hash[VNET_PORT_HASH_SIZE]; 110 111 struct vnet_mcast_entry *mcast_list; 112 113 struct list_head list; 114 u64 local_mac; 115 116 int nports; 117 }; 118 119 /* Def used by common code to get the net_device from the proper location */ 120 #define VNET_PORT_TO_NET_DEVICE(__port) \ 121 ((__port)->vsw ? (__port)->dev : (__port)->vp->dev) 122 123 /* Common funcs */ 124 void sunvnet_clean_timer_expire_common(unsigned long port0); 125 int sunvnet_open_common(struct net_device *dev); 126 int sunvnet_close_common(struct net_device *dev); 127 void sunvnet_set_rx_mode_common(struct net_device *dev, struct vnet *vp); 128 int sunvnet_set_mac_addr_common(struct net_device *dev, void *p); 129 void sunvnet_tx_timeout_common(struct net_device *dev); 130 int sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev, 131 struct vnet_port *(*vnet_tx_port) 132 (struct sk_buff *, struct net_device *)); 133 #ifdef CONFIG_NET_POLL_CONTROLLER 134 void sunvnet_poll_controller_common(struct net_device *dev, struct vnet *vp); 135 #endif 136 void sunvnet_event_common(void *arg, int event); 137 int sunvnet_send_attr_common(struct vio_driver_state *vio); 138 int sunvnet_handle_attr_common(struct vio_driver_state *vio, void *arg); 139 void sunvnet_handshake_complete_common(struct vio_driver_state *vio); 140 int sunvnet_poll_common(struct napi_struct *napi, int budget); 141 void sunvnet_port_free_tx_bufs_common(struct vnet_port *port); 142 bool sunvnet_port_is_up_common(struct vnet_port *vnet); 143 void sunvnet_port_add_txq_common(struct vnet_port *port); 144 void sunvnet_port_rm_txq_common(struct vnet_port *port); 145 146 #endif /* _SUNVNETCOMMON_H */ 147