1b2441318SGreg Kroah-Hartman /* SPDX-License-Identifier: GPL-2.0 */ 231762eaaSAaron Young #ifndef _SUNVNETCOMMON_H 331762eaaSAaron Young #define _SUNVNETCOMMON_H 431762eaaSAaron Young 531762eaaSAaron Young #include <linux/interrupt.h> 631762eaaSAaron Young 731762eaaSAaron Young /* length of time (or less) we expect pending descriptors to be marked 831762eaaSAaron Young * as VIO_DESC_DONE and skbs ready to be freed 931762eaaSAaron Young */ 1031762eaaSAaron Young #define VNET_CLEAN_TIMEOUT ((HZ / 100) + 1) 1131762eaaSAaron Young 1231762eaaSAaron Young #define VNET_MAXPACKET (65535ULL + ETH_HLEN + VLAN_HLEN) 1331762eaaSAaron Young #define VNET_TX_RING_SIZE 512 1431762eaaSAaron Young #define VNET_TX_WAKEUP_THRESH(dr) ((dr)->pending / 4) 1531762eaaSAaron Young 1631762eaaSAaron Young #define VNET_MINTSO 2048 /* VIO protocol's minimum TSO len */ 1731762eaaSAaron Young #define VNET_MAXTSO 65535 /* VIO protocol's maximum TSO len */ 1831762eaaSAaron Young 19540bfe30SJarod Wilson #define VNET_MAX_MTU 65535 20540bfe30SJarod Wilson 2131762eaaSAaron Young /* VNET packets are sent in buffers with the first 6 bytes skipped 2231762eaaSAaron Young * so that after the ethernet header the IPv4/IPv6 headers are aligned 2331762eaaSAaron Young * properly. 2431762eaaSAaron Young */ 2531762eaaSAaron Young #define VNET_PACKET_SKIP 6 2631762eaaSAaron Young 2731762eaaSAaron Young #define VNET_MAXCOOKIES (VNET_MAXPACKET / PAGE_SIZE + 1) 2831762eaaSAaron Young 2931762eaaSAaron Young #define VNET_MAX_TXQS 16 3031762eaaSAaron Young 3131762eaaSAaron Young struct vnet_tx_entry { 3231762eaaSAaron Young struct sk_buff *skb; 3331762eaaSAaron Young unsigned int ncookies; 3431762eaaSAaron Young struct ldc_trans_cookie cookies[VNET_MAXCOOKIES]; 3531762eaaSAaron Young }; 3631762eaaSAaron Young 3731762eaaSAaron Young struct vnet; 3867d0719fSAaron Young 390f512c84SShannon Nelson struct vnet_port_stats { 400f512c84SShannon Nelson /* keep them all the same size */ 410f512c84SShannon Nelson u32 rx_bytes; 420f512c84SShannon Nelson u32 tx_bytes; 430f512c84SShannon Nelson u32 rx_packets; 440f512c84SShannon Nelson u32 tx_packets; 450f512c84SShannon Nelson u32 event_up; 460f512c84SShannon Nelson u32 event_reset; 470f512c84SShannon Nelson u32 q_placeholder; 480f512c84SShannon Nelson }; 490f512c84SShannon Nelson 500f512c84SShannon Nelson #define NUM_VNET_PORT_STATS (sizeof(struct vnet_port_stats) / sizeof(u32)) 510f512c84SShannon Nelson 5267d0719fSAaron Young /* Structure to describe a vnet-port or vsw-port in the MD. 5367d0719fSAaron Young * If the vsw bit is set, this structure represents a vswitch 5467d0719fSAaron Young * port, and the net_device can be found from ->dev. If the 5567d0719fSAaron Young * vsw bit is not set, the net_device is available from ->vp->dev. 5667d0719fSAaron Young * See the VNET_PORT_TO_NET_DEVICE macro below. 5767d0719fSAaron Young */ 5831762eaaSAaron Young struct vnet_port { 5931762eaaSAaron Young struct vio_driver_state vio; 6031762eaaSAaron Young 610f512c84SShannon Nelson struct vnet_port_stats stats; 620f512c84SShannon Nelson 6331762eaaSAaron Young struct hlist_node hash; 6431762eaaSAaron Young u8 raddr[ETH_ALEN]; 6531762eaaSAaron Young unsigned switch_port:1; 6631762eaaSAaron Young unsigned tso:1; 6767d0719fSAaron Young unsigned vsw:1; 6867d0719fSAaron Young unsigned __pad:13; 6931762eaaSAaron Young 7031762eaaSAaron Young struct vnet *vp; 7167d0719fSAaron Young struct net_device *dev; 7231762eaaSAaron Young 7331762eaaSAaron Young struct vnet_tx_entry tx_bufs[VNET_TX_RING_SIZE]; 7431762eaaSAaron Young 7531762eaaSAaron Young struct list_head list; 7631762eaaSAaron Young 7731762eaaSAaron Young u32 stop_rx_idx; 7831762eaaSAaron Young bool stop_rx; 7931762eaaSAaron Young bool start_cons; 8031762eaaSAaron Young 8131762eaaSAaron Young struct timer_list clean_timer; 8231762eaaSAaron Young 8331762eaaSAaron Young u64 rmtu; 8431762eaaSAaron Young u16 tsolen; 8531762eaaSAaron Young 8631762eaaSAaron Young struct napi_struct napi; 8731762eaaSAaron Young u32 napi_stop_idx; 8831762eaaSAaron Young bool napi_resume; 8931762eaaSAaron Young int rx_event; 9031762eaaSAaron Young u16 q_index; 9131762eaaSAaron Young }; 9231762eaaSAaron Young 9331762eaaSAaron Young static inline struct vnet_port *to_vnet_port(struct vio_driver_state *vio) 9431762eaaSAaron Young { 9531762eaaSAaron Young return container_of(vio, struct vnet_port, vio); 9631762eaaSAaron Young } 9731762eaaSAaron Young 9831762eaaSAaron Young #define VNET_PORT_HASH_SIZE 16 9931762eaaSAaron Young #define VNET_PORT_HASH_MASK (VNET_PORT_HASH_SIZE - 1) 10031762eaaSAaron Young 10131762eaaSAaron Young static inline unsigned int vnet_hashfn(u8 *mac) 10231762eaaSAaron Young { 10331762eaaSAaron Young unsigned int val = mac[4] ^ mac[5]; 10431762eaaSAaron Young 10531762eaaSAaron Young return val & (VNET_PORT_HASH_MASK); 10631762eaaSAaron Young } 10731762eaaSAaron Young 10831762eaaSAaron Young struct vnet_mcast_entry { 10931762eaaSAaron Young u8 addr[ETH_ALEN]; 11031762eaaSAaron Young u8 sent; 11131762eaaSAaron Young u8 hit; 11231762eaaSAaron Young struct vnet_mcast_entry *next; 11331762eaaSAaron Young }; 11431762eaaSAaron Young 11531762eaaSAaron Young struct vnet { 116e1f1e5f7SShannon Nelson spinlock_t lock; /* Protects port_list and port_hash. */ 11731762eaaSAaron Young struct net_device *dev; 11831762eaaSAaron Young u32 msg_enable; 119e1f1e5f7SShannon Nelson u8 q_used[VNET_MAX_TXQS]; 12031762eaaSAaron Young struct list_head port_list; 12131762eaaSAaron Young struct hlist_head port_hash[VNET_PORT_HASH_SIZE]; 12231762eaaSAaron Young struct vnet_mcast_entry *mcast_list; 12331762eaaSAaron Young struct list_head list; 12431762eaaSAaron Young u64 local_mac; 12531762eaaSAaron Young int nports; 12631762eaaSAaron Young }; 12731762eaaSAaron Young 12867d0719fSAaron Young /* Def used by common code to get the net_device from the proper location */ 12967d0719fSAaron Young #define VNET_PORT_TO_NET_DEVICE(__port) \ 13067d0719fSAaron Young ((__port)->vsw ? (__port)->dev : (__port)->vp->dev) 13167d0719fSAaron Young 13231762eaaSAaron Young /* Common funcs */ 1330822c5d9SKees Cook void sunvnet_clean_timer_expire_common(struct timer_list *t); 13431762eaaSAaron Young int sunvnet_open_common(struct net_device *dev); 13531762eaaSAaron Young int sunvnet_close_common(struct net_device *dev); 13667d0719fSAaron Young void sunvnet_set_rx_mode_common(struct net_device *dev, struct vnet *vp); 13731762eaaSAaron Young int sunvnet_set_mac_addr_common(struct net_device *dev, void *p); 13831762eaaSAaron Young void sunvnet_tx_timeout_common(struct net_device *dev); 1390e0cc31fSYueHaibing netdev_tx_t 1400e0cc31fSYueHaibing sunvnet_start_xmit_common(struct sk_buff *skb, struct net_device *dev, 14167d0719fSAaron Young struct vnet_port *(*vnet_tx_port) 14267d0719fSAaron Young (struct sk_buff *, struct net_device *)); 14331762eaaSAaron Young #ifdef CONFIG_NET_POLL_CONTROLLER 14467d0719fSAaron Young void sunvnet_poll_controller_common(struct net_device *dev, struct vnet *vp); 14531762eaaSAaron Young #endif 14631762eaaSAaron Young void sunvnet_event_common(void *arg, int event); 14731762eaaSAaron Young int sunvnet_send_attr_common(struct vio_driver_state *vio); 14831762eaaSAaron Young int sunvnet_handle_attr_common(struct vio_driver_state *vio, void *arg); 14931762eaaSAaron Young void sunvnet_handshake_complete_common(struct vio_driver_state *vio); 15031762eaaSAaron Young int sunvnet_poll_common(struct napi_struct *napi, int budget); 15131762eaaSAaron Young void sunvnet_port_free_tx_bufs_common(struct vnet_port *port); 152867fa150SShannon Nelson void vnet_port_reset(struct vnet_port *port); 15367d0719fSAaron Young bool sunvnet_port_is_up_common(struct vnet_port *vnet); 15431762eaaSAaron Young void sunvnet_port_add_txq_common(struct vnet_port *port); 15531762eaaSAaron Young void sunvnet_port_rm_txq_common(struct vnet_port *port); 15631762eaaSAaron Young 15731762eaaSAaron Young #endif /* _SUNVNETCOMMON_H */ 158