Add the rt linux 4.1.3-rt3 as base

[kvmfornfv.git] / kernel / drivers / net / ethernet / sun / sunvnet.h

diff --git a/kernel/drivers/net/ethernet/sun/sunvnet.h b/kernel/drivers/net/ethernet/sun/sunvnet.h
new file mode 100644 (file)
index 0000000..01ca781
--- /dev/null
+++ b/kernel/drivers/net/ethernet/sun/sunvnet.h
@@ -0,0 +1,114 @@
+#ifndef _SUNVNET_H
+#define _SUNVNET_H
+
+#include <linux/interrupt.h>
+
+#define DESC_NCOOKIES(entry_size)      \
+       ((entry_size) - sizeof(struct vio_net_desc))
+
+/* length of time before we decide the hardware is borked,
+ * and dev->tx_timeout() should be called to fix the problem
+ */
+#define VNET_TX_TIMEOUT                        (5 * HZ)
+
+/* length of time (or less) we expect pending descriptors to be marked
+ * as VIO_DESC_DONE and skbs ready to be freed
+ */
+#define        VNET_CLEAN_TIMEOUT              ((HZ/100)+1)
+
+#define VNET_MAXPACKET                 (65535ULL + ETH_HLEN + VLAN_HLEN)
+#define VNET_TX_RING_SIZE              512
+#define VNET_TX_WAKEUP_THRESH(dr)      ((dr)->pending / 4)
+
+#define        VNET_MINTSO      2048   /* VIO protocol's minimum TSO len */
+#define        VNET_MAXTSO     65535   /* VIO protocol's maximum TSO len */
+
+/* VNET packets are sent in buffers with the first 6 bytes skipped
+ * so that after the ethernet header the IPv4/IPv6 headers are aligned
+ * properly.
+ */
+#define VNET_PACKET_SKIP               6
+
+#define VNET_MAXCOOKIES                        (VNET_MAXPACKET/PAGE_SIZE + 1)
+
+struct vnet_tx_entry {
+       struct sk_buff          *skb;
+       unsigned int            ncookies;
+       struct ldc_trans_cookie cookies[VNET_MAXCOOKIES];
+};
+
+struct vnet;
+struct vnet_port {
+       struct vio_driver_state vio;
+
+       struct hlist_node       hash;
+       u8                      raddr[ETH_ALEN];
+       unsigned                switch_port:1;
+       unsigned                tso:1;
+       unsigned                __pad:14;
+
+       struct vnet             *vp;
+
+       struct vnet_tx_entry    tx_bufs[VNET_TX_RING_SIZE];
+
+       struct list_head        list;
+
+       u32                     stop_rx_idx;
+       bool                    stop_rx;
+       bool                    start_cons;
+
+       struct timer_list       clean_timer;
+
+       u64                     rmtu;
+       u16                     tsolen;
+
+       struct napi_struct      napi;
+       u32                     napi_stop_idx;
+       bool                    napi_resume;
+       int                     rx_event;
+       u16                     q_index;
+};
+
+static inline struct vnet_port *to_vnet_port(struct vio_driver_state *vio)
+{
+       return container_of(vio, struct vnet_port, vio);
+}
+
+#define VNET_PORT_HASH_SIZE    16
+#define VNET_PORT_HASH_MASK    (VNET_PORT_HASH_SIZE - 1)
+
+static inline unsigned int vnet_hashfn(u8 *mac)
+{
+       unsigned int val = mac[4] ^ mac[5];
+
+       return val & (VNET_PORT_HASH_MASK);
+}
+
+struct vnet_mcast_entry {
+       u8                      addr[ETH_ALEN];
+       u8                      sent;
+       u8                      hit;
+       struct vnet_mcast_entry *next;
+};
+
+struct vnet {
+       /* Protects port_list and port_hash.  */
+       spinlock_t              lock;
+
+       struct net_device       *dev;
+
+       u32                     msg_enable;
+
+       struct list_head        port_list;
+
+       struct hlist_head       port_hash[VNET_PORT_HASH_SIZE];
+
+       struct vnet_mcast_entry *mcast_list;
+
+       struct list_head        list;
+       u64                     local_mac;
+
+       int                     nports;
+};
+
+#endif /* _SUNVNET_H */