#ifndef TB_TUNNEL_H_
#define TB_TUNNEL_H_
#include "tb.h"
enum tb_tunnel_type {
TB_TUNNEL_PCI,
TB_TUNNEL_DP,
TB_TUNNEL_DMA,
TB_TUNNEL_USB3,
};
enum tb_tunnel_state {
TB_TUNNEL_INACTIVE,
TB_TUNNEL_ACTIVATING,
TB_TUNNEL_ACTIVE,
};
struct tb_tunnel {
struct kref kref;
struct tb *tb;
struct tb_port *src_port;
struct tb_port *dst_port;
struct tb_path **paths;
size_t npaths;
int (*pre_activate)(struct tb_tunnel *tunnel);
int (*activate)(struct tb_tunnel *tunnel, bool activate);
void (*post_deactivate)(struct tb_tunnel *tunnel);
void (*destroy)(struct tb_tunnel *tunnel);
int (*maximum_bandwidth)(struct tb_tunnel *tunnel, int *max_up,
int *max_down);
int (*allocated_bandwidth)(struct tb_tunnel *tunnel, int *allocated_up,
int *allocated_down);
int (*alloc_bandwidth)(struct tb_tunnel *tunnel, int *alloc_up,
int *alloc_down);
int (*consumed_bandwidth)(struct tb_tunnel *tunnel, int *consumed_up,
int *consumed_down);
int (*release_unused_bandwidth)(struct tb_tunnel *tunnel);
void (*reclaim_available_bandwidth)(struct tb_tunnel *tunnel,
int *available_up,
int *available_down);
struct list_head list;
enum tb_tunnel_type type;
enum tb_tunnel_state state;
int max_up;
int max_down;
int allocated_up;
int allocated_down;
bool bw_mode;
bool dprx_started;
bool dprx_canceled;
ktime_t dprx_timeout;
struct delayed_work dprx_work;
void (*callback)(struct tb_tunnel *tunnel, void *data);
void *callback_data;
};
struct tb_tunnel *tb_tunnel_discover_pci(struct tb *tb, struct tb_port *down,
bool alloc_hopid);
struct tb_tunnel *tb_tunnel_alloc_pci(struct tb *tb, struct tb_port *up,
struct tb_port *down);
bool tb_tunnel_reserved_pci(struct tb_port *port, int *reserved_up,
int *reserved_down);
struct tb_tunnel *tb_tunnel_discover_dp(struct tb *tb, struct tb_port *in,
bool alloc_hopid);
struct tb_tunnel *tb_tunnel_alloc_dp(struct tb *tb, struct tb_port *in,
struct tb_port *out, int link_nr,
int max_up, int max_down,
void (*callback)(struct tb_tunnel *, void *),
void *callback_data);
struct tb_tunnel *tb_tunnel_alloc_dma(struct tb *tb, struct tb_port *nhi,
struct tb_port *dst, int transmit_path,
int transmit_ring, int receive_path,
int receive_ring);
bool tb_tunnel_match_dma(const struct tb_tunnel *tunnel, int transmit_path,
int transmit_ring, int receive_path, int receive_ring);
struct tb_tunnel *tb_tunnel_discover_usb3(struct tb *tb, struct tb_port *down,
bool alloc_hopid);
struct tb_tunnel *tb_tunnel_alloc_usb3(struct tb *tb, struct tb_port *up,
struct tb_port *down, int max_up,
int max_down);
void tb_tunnel_put(struct tb_tunnel *tunnel);
int tb_tunnel_activate(struct tb_tunnel *tunnel);
void tb_tunnel_deactivate(struct tb_tunnel *tunnel);
static inline bool tb_tunnel_is_active(const struct tb_tunnel *tunnel)
{
return tunnel->state == TB_TUNNEL_ACTIVE;
}
bool tb_tunnel_is_invalid(struct tb_tunnel *tunnel);
bool tb_tunnel_port_on_path(const struct tb_tunnel *tunnel,
const struct tb_port *port);
int tb_tunnel_maximum_bandwidth(struct tb_tunnel *tunnel, int *max_up,
int *max_down);
int tb_tunnel_allocated_bandwidth(struct tb_tunnel *tunnel, int *allocated_up,
int *allocated_down);
int tb_tunnel_alloc_bandwidth(struct tb_tunnel *tunnel, int *alloc_up,
int *alloc_down);
int tb_tunnel_consumed_bandwidth(struct tb_tunnel *tunnel, int *consumed_up,
int *consumed_down);
int tb_tunnel_release_unused_bandwidth(struct tb_tunnel *tunnel);
void tb_tunnel_reclaim_available_bandwidth(struct tb_tunnel *tunnel,
int *available_up,
int *available_down);
static inline bool tb_tunnel_is_pci(const struct tb_tunnel *tunnel)
{
return tunnel->type == TB_TUNNEL_PCI;
}
static inline bool tb_tunnel_is_dp(const struct tb_tunnel *tunnel)
{
return tunnel->type == TB_TUNNEL_DP;
}
static inline bool tb_tunnel_is_dma(const struct tb_tunnel *tunnel)
{
return tunnel->type == TB_TUNNEL_DMA;
}
static inline bool tb_tunnel_is_usb3(const struct tb_tunnel *tunnel)
{
return tunnel->type == TB_TUNNEL_USB3;
}
static inline bool tb_tunnel_direction_downstream(const struct tb_tunnel *tunnel)
{
return tb_port_path_direction_downstream(tunnel->src_port,
tunnel->dst_port);
}
enum tb_tunnel_event {
TB_TUNNEL_ACTIVATED,
TB_TUNNEL_CHANGED,
TB_TUNNEL_DEACTIVATED,
TB_TUNNEL_LOW_BANDWIDTH,
TB_TUNNEL_NO_BANDWIDTH,
};
void tb_tunnel_event(struct tb *tb, enum tb_tunnel_event event,
enum tb_tunnel_type type,
const struct tb_port *src_port,
const struct tb_port *dst_port);
const char *tb_tunnel_type_name(const struct tb_tunnel *tunnel);
#define __TB_TUNNEL_PRINT(level, tunnel, fmt, arg...) \
do { \
struct tb_tunnel *__tunnel = (tunnel); \
level(__tunnel->tb, "%llx:%u <-> %llx:%u (%s): " fmt, \
tb_route(__tunnel->src_port->sw), \
__tunnel->src_port->port, \
tb_route(__tunnel->dst_port->sw), \
__tunnel->dst_port->port, \
tb_tunnel_type_name(__tunnel), \
## arg); \
} while (0)
#define tb_tunnel_WARN(tunnel, fmt, arg...) \
__TB_TUNNEL_PRINT(tb_WARN, tunnel, fmt, ##arg)
#define tb_tunnel_warn(tunnel, fmt, arg...) \
__TB_TUNNEL_PRINT(tb_warn, tunnel, fmt, ##arg)
#define tb_tunnel_info(tunnel, fmt, arg...) \
__TB_TUNNEL_PRINT(tb_info, tunnel, fmt, ##arg)
#define tb_tunnel_dbg(tunnel, fmt, arg...) \
__TB_TUNNEL_PRINT(tb_dbg, tunnel, fmt, ##arg)
#endif
