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
to_vnet_port(struct vio_driver_state * vio)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
vnet_hashfn(u8 * mac)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);
1380290bd29SMichael S. Tsirkin void sunvnet_tx_timeout_common(struct net_device *dev, unsigned int txqueue);
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 */
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