vhost_user_input.c File Reference

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Macros
#define	VHOST_USER_DOWN_DISCARD_COUNT   256
#define	VHOST_USER_RX_BUFFER_STARVATION   32
#define	VHOST_USER_RX_COPY_THRESHOLD   64
#define	foreach_vhost_user_input_func_error

Enumerations
enum	vhost_user_input_func_error_t { VHOST_USER_INPUT_FUNC_N_ERROR }

Functions
static_always_inline void	vhost_user_rx_trace (vhost_trace_t *t, vhost_user_intf_t *vui, u16 qid, vlib_buffer_t *b, vhost_user_vring_t *txvq, u16 last_avail_idx)
static_always_inline u32	vhost_user_input_copy (vhost_user_intf_t *vui, vhost_copy_t *cpy, u16 copy_len, u32 *map_hint)
static_always_inline u32	vhost_user_rx_discard_packet (vlib_main_t *vm, vhost_user_intf_t *vui, vhost_user_vring_t *txvq, u32 discard_max)
	Try to discard packets from the tx ring (VPP RX path). More...
static_always_inline void	vhost_user_input_rewind_buffers (vlib_main_t *vm, vhost_cpu_t *cpu, vlib_buffer_t *b_head)
static_always_inline void	vhost_user_handle_rx_offload (vlib_buffer_t *b0, u8 *b0_data, virtio_net_hdr_t *hdr)
static_always_inline void	vhost_user_input_do_interrupt (vlib_main_t *vm, vhost_user_vring_t *txvq, vhost_user_vring_t *rxvq)
static_always_inline void	vhost_user_input_setup_frame (vlib_main_t *vm, vlib_node_runtime_t *node, vhost_user_intf_t *vui, u32 *current_config_index, u32 *next_index, u32 **to_next, u32 *n_left_to_next)
static_always_inline u32	vhost_user_if_input (vlib_main_t *vm, vhost_user_main_t *vum, vhost_user_intf_t *vui, u16 qid, vlib_node_runtime_t *node, vnet_hw_interface_rx_mode mode, u8 enable_csum)
static_always_inline void	vhost_user_mark_desc_consumed (vhost_user_intf_t *vui, vhost_user_vring_t *txvq, u16 desc_head, u16 n_descs_processed)
static_always_inline void	vhost_user_rx_trace_packed (vhost_trace_t *t, vhost_user_intf_t *vui, u16 qid, vhost_user_vring_t *txvq, u16 desc_current)
static_always_inline u32	vhost_user_rx_discard_packet_packed (vlib_main_t *vm, vhost_user_intf_t *vui, vhost_user_vring_t *txvq, u32 discard_max)
static_always_inline u32	vhost_user_input_copy_packed (vhost_user_intf_t *vui, vhost_copy_t *cpy, u16 copy_len, u32 *map_hint)
static_always_inline u32	vhost_user_do_offload (vhost_user_intf_t *vui, vring_packed_desc_t *desc_table, u16 desc_current, u16 mask, vlib_buffer_t *b_head, u32 *map_hint)
static_always_inline u32	vhost_user_compute_buffers_required (u32 desc_len, u32 buffer_data_size)
static_always_inline u32	vhost_user_compute_indirect_desc_len (vhost_user_intf_t *vui, vhost_user_vring_t *txvq, u32 buffer_data_size, u16 desc_current, u32 *map_hint)
static_always_inline u32	vhost_user_compute_chained_desc_len (vhost_user_intf_t *vui, vhost_user_vring_t *txvq, u32 buffer_data_size, u16 *current, u16 *n_left)
static_always_inline void	vhost_user_assemble_packet (vring_packed_desc_t *desc_table, u16 *desc_idx, vlib_buffer_t *b_head, vlib_buffer_t **b_current, u32 **next, vlib_buffer_t ***b, u32 *bi_current, vhost_cpu_t *cpu, u16 *copy_len, u32 *buffers_used, u32 buffers_required, u32 *desc_data_offset, u32 buffer_data_size, u16 mask)
static_always_inline u32	vhost_user_if_input_packed (vlib_main_t *vm, vhost_user_main_t *vum, vhost_user_intf_t *vui, u16 qid, vlib_node_runtime_t *node, vnet_hw_interface_rx_mode mode, u8 enable_csum)
VLIB_NODE_FN()	vhost_user_input_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)

Variables
vlib_node_registration_t	vhost_user_input_node
	(constructor) VLIB_REGISTER_NODE (vhost_user_input_node) More...
static __clib_unused char *	vhost_user_input_func_error_strings []

Macro Definition Documentation

foreach_vhost_user_input_func_error

#define foreach_vhost_user_input_func_error

Value:

_(NO_ERROR, "no error")  \
  _(NO_BUFFER, "no available buffer")  \
  _(MMAP_FAIL, "mmap failure")  \
  _(INDIRECT_OVERFLOW, "indirect descriptor overflows table")  \
  _(UNDERSIZED_FRAME, "undersized ethernet frame received (< 14 bytes)") \
  _(NOT_READY, "vhost interface not ready or down") \
  _(FULL_RX_QUEUE, "full rx queue (possible driver tx drop)")

Definition at line 70 of file vhost_user_input.c.

VHOST_USER_DOWN_DISCARD_COUNT

#define VHOST_USER_DOWN_DISCARD_COUNT   256

Definition at line 50 of file vhost_user_input.c.

VHOST_USER_RX_BUFFER_STARVATION

#define VHOST_USER_RX_BUFFER_STARVATION   32

Definition at line 56 of file vhost_user_input.c.

VHOST_USER_RX_COPY_THRESHOLD

#define VHOST_USER_RX_COPY_THRESHOLD   64

Definition at line 66 of file vhost_user_input.c.

Enumeration Type Documentation

vhost_user_input_func_error_t

enum vhost_user_input_func_error_t

Enumerator
VHOST_USER_INPUT_FUNC_N_ERROR

Definition at line 79 of file vhost_user_input.c.

Function Documentation

vhost_user_assemble_packet()

static_always_inline void vhost_user_assemble_packet	(	vring_packed_desc_t *	desc_table,
		u16 *	desc_idx,
		vlib_buffer_t *	b_head,
		vlib_buffer_t **	b_current,
		u32 **	next,
		vlib_buffer_t ***	b,
		u32 *	bi_current,
		vhost_cpu_t *	cpu,
		u16 *	copy_len,
		u32 *	buffers_used,
		u32	buffers_required,
		u32 *	desc_data_offset,
		u32	buffer_data_size,
		u16	mask
	)

Definition at line 1035 of file vhost_user_input.c.

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vhost_user_compute_buffers_required()

static_always_inline u32 vhost_user_compute_buffers_required	(	u32	desc_len,
		u32	buffer_data_size
	)

Definition at line 955 of file vhost_user_input.c.

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vhost_user_compute_chained_desc_len()

static_always_inline u32 vhost_user_compute_chained_desc_len	(	vhost_user_intf_t *	vui,
		vhost_user_vring_t *	txvq,
		u32	buffer_data_size,
		u16 *	current,
		u16 *	n_left
	)

Definition at line 1007 of file vhost_user_input.c.

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vhost_user_compute_indirect_desc_len()

static_always_inline u32 vhost_user_compute_indirect_desc_len	(	vhost_user_intf_t *	vui,
		vhost_user_vring_t *	txvq,
		u32	buffer_data_size,
		u16	desc_current,
		u32 *	map_hint
	)

Definition at line 981 of file vhost_user_input.c.

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vhost_user_do_offload()

static_always_inline u32 vhost_user_do_offload	(	vhost_user_intf_t *	vui,
		vring_packed_desc_t *	desc_table,
		u16	desc_current,
		u16	mask,
		vlib_buffer_t *	b_head,
		u32 *	map_hint
	)

Definition at line 920 of file vhost_user_input.c.

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vhost_user_handle_rx_offload()

static_always_inline void vhost_user_handle_rx_offload	(	vlib_buffer_t *	b0,
		u8 *	b0_data,
		virtio_net_hdr_t *	hdr
	)

Definition at line 248 of file vhost_user_input.c.

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vhost_user_if_input()

static_always_inline u32 vhost_user_if_input	(	vlib_main_t *	vm,
		vhost_user_main_t *	vum,
		vhost_user_intf_t *	vui,
		u16	qid,
		vlib_node_runtime_t *	node,
		vnet_hw_interface_rx_mode	mode,
		u8	enable_csum
	)

Definition at line 375 of file vhost_user_input.c.

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vhost_user_if_input_packed()

static_always_inline u32 vhost_user_if_input_packed	(	vlib_main_t *	vm,
		vhost_user_main_t *	vum,
		vhost_user_intf_t *	vui,
		u16	qid,
		vlib_node_runtime_t *	node,
		vnet_hw_interface_rx_mode	mode,
		u8	enable_csum
	)

Definition at line 1084 of file vhost_user_input.c.

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vhost_user_input_copy()

static_always_inline u32 vhost_user_input_copy	(	vhost_user_intf_t *	vui,
		vhost_copy_t *	cpy,
		u16	copy_len,
		u32 *	map_hint
	)

Definition at line 140 of file vhost_user_input.c.

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vhost_user_input_copy_packed()

static_always_inline u32 vhost_user_input_copy_packed	(	vhost_user_intf_t *	vui,
		vhost_copy_t *	cpy,
		u16	copy_len,
		u32 *	map_hint
	)

Definition at line 854 of file vhost_user_input.c.

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vhost_user_input_do_interrupt()

static_always_inline void vhost_user_input_do_interrupt	(	vlib_main_t *	vm,
		vhost_user_vring_t *	txvq,
		vhost_user_vring_t *	rxvq
	)

Definition at line 324 of file vhost_user_input.c.

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vhost_user_input_node()

VLIB_NODE_FN() vhost_user_input_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	frame
	)

Definition at line 1409 of file vhost_user_input.c.

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vhost_user_input_rewind_buffers()

static_always_inline void vhost_user_input_rewind_buffers	(	vlib_main_t *	vm,
		vhost_cpu_t *	cpu,
		vlib_buffer_t *	b_head
	)

Definition at line 229 of file vhost_user_input.c.

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vhost_user_input_setup_frame()

static_always_inline void vhost_user_input_setup_frame	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vhost_user_intf_t *	vui,
		u32 *	current_config_index,
		u32 *	next_index,
		u32 **	to_next,
		u32 *	n_left_to_next
	)

Definition at line 337 of file vhost_user_input.c.

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vhost_user_mark_desc_consumed()

static_always_inline void vhost_user_mark_desc_consumed	(	vhost_user_intf_t *	vui,
		vhost_user_vring_t *	txvq,
		u16	desc_head,
		u16	n_descs_processed
	)

Definition at line 762 of file vhost_user_input.c.

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vhost_user_rx_discard_packet()

static_always_inline u32 vhost_user_rx_discard_packet	(	vlib_main_t *	vm,
		vhost_user_intf_t *	vui,
		vhost_user_vring_t *	txvq,
		u32	discard_max
	)

Try to discard packets from the tx ring (VPP RX path).

Returns the number of discarded packets.

Definition at line 188 of file vhost_user_input.c.

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vhost_user_rx_discard_packet_packed()

static_always_inline u32 vhost_user_rx_discard_packet_packed	(	vlib_main_t *	vm,
		vhost_user_intf_t *	vui,
		vhost_user_vring_t *	txvq,
		u32	discard_max
	)

Definition at line 824 of file vhost_user_input.c.

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vhost_user_rx_trace()

static_always_inline void vhost_user_rx_trace	(	vhost_trace_t *	t,
		vhost_user_intf_t *	vui,
		u16	qid,
		vlib_buffer_t *	b,
		vhost_user_vring_t *	txvq,
		u16	last_avail_idx
	)

Definition at line 94 of file vhost_user_input.c.

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vhost_user_rx_trace_packed()

static_always_inline void vhost_user_rx_trace_packed	(	vhost_trace_t *	t,
		vhost_user_intf_t *	vui,
		u16	qid,
		vhost_user_vring_t *	txvq,
		u16	desc_current
	)

Definition at line 783 of file vhost_user_input.c.

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Variable Documentation

vhost_user_input_func_error_strings

__clib_unused char* vhost_user_input_func_error_strings[]

static

Initial value:

= {
#define _(n,s) 
  foreach_vhost_user_input_func_error

}

Definition at line 87 of file vhost_user_input.c.

vhost_user_input_node

vlib_node_registration_t vhost_user_input_node

Initial value:

= {
  .type = VLIB_NODE_TYPE_INPUT,
  .name = "vhost-user-input",
  .sibling_of = "device-input",
  .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,

  
  .state = VLIB_NODE_STATE_DISABLED,

  .format_buffer = format_ethernet_header_with_length,
  .format_trace = format_vhost_trace,

  .n_errors = VHOST_USER_INPUT_FUNC_N_ERROR,
  .error_strings = vhost_user_input_func_error_strings,
}

(constructor) VLIB_REGISTER_NODE (vhost_user_input_node)

Definition at line 1454 of file vhost_user_input.c.