t4_mp_ring.h File Reference

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Data Structures
struct	mp_ring

Typedefs
typedef u_int(*	ring_drain_t) (struct mp_ring *, u_int, u_int, bool *)
typedef u_int(*	ring_can_drain_t) (struct mp_ring *)

Functions
int	mp_ring_alloc (struct mp_ring **, int, void *, ring_drain_t, ring_can_drain_t, struct malloc_type *, struct mtx *, int)
void	mp_ring_free (struct mp_ring *)
int	mp_ring_enqueue (struct mp_ring *, void **, int, int)
void	mp_ring_check_drainage (struct mp_ring *, int)
void	mp_ring_reset_stats (struct mp_ring *)
bool	mp_ring_is_idle (struct mp_ring *)
void	mp_ring_sysctls (struct mp_ring *, struct sysctl_ctx_list *, struct sysctl_oid_list *)

Typedef Documentation

ring_can_drain_t

typedef u_int(* ring_can_drain_t) (struct mp_ring *)

Definition at line 40 of file t4_mp_ring.h.

ring_drain_t

typedef u_int(* ring_drain_t) (struct mp_ring *, u_int, u_int, bool *)

Definition at line 39 of file t4_mp_ring.h.

Function Documentation

mp_ring_alloc()

int mp_ring_alloc	(	struct mp_ring **	pr,
		int	size,
		void *	cookie,
		ring_drain_t	drain,
		ring_can_drain_t	can_drain,
		struct malloc_type *	mt,
		struct mtx *	lck,
		int	flags
	)

Definition at line 261 of file t4_mp_ring.c.

References mp_ring::abdications, mp_ring::can_drain, mp_ring::cons_idle, mp_ring::cons_idle2, mp_ring::cons_lock, mp_ring::consumed, mp_ring::consumer, mp_ring::cookie, mp_ring::drain, mp_ring::dropped, mp_ring_free(), mp_ring::mt, mp_ring::not_consumer, r, and mp_ring::stalls.

Referenced by alloc_txq().

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mp_ring_check_drainage()

void mp_ring_check_drainage	(	struct mp_ring *	r,
		int	budget
	)

Definition at line 479 of file t4_mp_ring.c.

References BUSY, mp_ring::can_drain, ring_state::cidx, COALESCING, mp_ring::cons_lock, drain_ring(), drain_txpkts(), ring_state::flags, ring_state::pidx_tail, r, STALLED, and ring_state::state.

Referenced by cxgbe_qflush(), handle_eth_egr_update(), mp_ring_enqueue(), and quiesce_txq().

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mp_ring_enqueue()

int mp_ring_enqueue	(	struct mp_ring *	r,
		void **	items,
		int	n,
		int	budget
	)

Definition at line 347 of file t4_mp_ring.c.

References BUSY, C_2, C_3, C_FAST, C_TAKEOVER, mp_ring::can_drain, ring_state::cidx, COALESCING, mp_ring::cons_lock, mp_ring::consumer, drain_ring(), mp_ring::dropped, ring_state::flags, IDLE, increment_idx(), mp_ring_check_drainage(), mp_ring::not_consumer, ring_state::pidx_head, ring_state::pidx_tail, r, space_available(), STALLED, ring_state::state, TAKING_OVER, and TOO_BUSY.

Referenced by cxgbe_transmit().

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mp_ring_free()

void mp_ring_free

(

struct mp_ring *

r

)

Definition at line 312 of file t4_mp_ring.c.

References mp_ring::abdications, mp_ring::cons_idle, mp_ring::cons_idle2, mp_ring::consumed, mp_ring::consumer, mp_ring::dropped, mp_ring::mt, mp_ring::not_consumer, r, and mp_ring::stalls.

Referenced by alloc_txq(), free_txq(), and mp_ring_alloc().

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mp_ring_is_idle()

bool mp_ring_is_idle

(

struct mp_ring *

r

)

Definition at line 522 of file t4_mp_ring.c.

References ring_state::cidx, ring_state::flags, IDLE, ring_state::pidx_head, ring_state::pidx_tail, r, and ring_state::state.

Referenced by cxgbe_qflush(), handle_eth_egr_update(), and quiesce_txq().

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mp_ring_reset_stats()

void mp_ring_reset_stats

(

struct mp_ring *

r

)

Definition at line 506 of file t4_mp_ring.c.

References mp_ring::abdications, mp_ring::cons_idle, mp_ring::cons_idle2, mp_ring::consumed, mp_ring::consumer, mp_ring::dropped, mp_ring::not_consumer, r, and mp_ring::stalls.

Referenced by clear_stats(), and t4vf_ioctl().

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mp_ring_sysctls()

void mp_ring_sysctls	(	struct mp_ring *	r,
		struct sysctl_ctx_list *	ctx,
		struct sysctl_oid_list *	children
	)

Definition at line 535 of file t4_mp_ring.c.

References mp_ring::abdications, C_2, C_3, C_FAST, C_TAKEOVER, mp_ring::cons_idle, mp_ring::cons_idle2, mp_ring::consumed, mp_ring::consumer, mp_ring::dropped, mp_ring::not_consumer, r, and mp_ring::stalls.

Referenced by add_txq_sysctls().

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