punt_node.c File Reference

Local TCP/IP stack punt infrastructure. More...

Include dependency graph for punt_node.c:

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Data Structures
struct	udp_punt_trace_t
struct	punt_trace_t

Macros
#define	punt_error(n, s)   PUNT_ERROR_##n,
#define	foreach_punt_next
#define	punt_next_punt(is_ip4)   (is_ip4 ? PUNT_NEXT_PUNT4 : PUNT_NEXT_PUNT6)
#define	punt_error(n, s)   s,

Enumerations
enum	punt_error_t { PUNT_N_ERROR }
enum	punt_next_t { PUNT_N_NEXT }
enum	punt_socket_rx_next_e { PUNT_SOCKET_RX_NEXT_INTERFACE_OUTPUT, PUNT_SOCKET_RX_NEXT_IP4_LOOKUP, PUNT_SOCKET_RX_NEXT_IP6_LOOKUP, PUNT_SOCKET_RX_N_NEXT }

Functions
static uword	udp46_punt_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame, int is_ip4)
	IPv4/IPv6 UDP punt node main loop. More...
VLIB_NODE_FN()	udp4_punt_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
	IPv4 UDP punt node. More...
VLIB_NODE_FN()	udp6_punt_node (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
	IPv6 UDP punt node. More...
static u8 *	format_udp_punt_trace (u8 *s, va_list *args)
static uword	punt_socket_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, punt_type_t pt, ip_address_family_t af)
static uword	udp4_punt_socket (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
static uword	udp6_punt_socket (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
static uword	ip4_proto_punt_socket (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
static uword	ip6_proto_punt_socket (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
static uword	exception_punt_socket (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *from_frame)
static u8 *	format_punt_trace (u8 *s, va_list *va)
static uword	punt_socket_rx_fd (vlib_main_t *vm, vlib_node_runtime_t *node, u32 fd)
static uword	punt_socket_rx (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)

Variables
static char *	punt_error_strings []
vlib_node_registration_t	udp4_punt_node
	(constructor) VLIB_REGISTER_NODE (udp4_punt_node) More...
vlib_node_registration_t	udp6_punt_node
	(constructor) VLIB_REGISTER_NODE (udp6_punt_node) More...
vlib_node_registration_t	udp4_punt_socket_node
	(constructor) VLIB_REGISTER_NODE (udp4_punt_socket_node) More...
vlib_node_registration_t	udp6_punt_socket_node
	(constructor) VLIB_REGISTER_NODE (udp6_punt_socket_node) More...
vlib_node_registration_t	ip4_proto_punt_socket_node
	(constructor) VLIB_REGISTER_NODE (ip4_proto_punt_socket_node) More...
vlib_node_registration_t	ip6_proto_punt_socket_node
	(constructor) VLIB_REGISTER_NODE (ip6_proto_punt_socket_node) More...
vlib_node_registration_t	exception_punt_socket_node
	(constructor) VLIB_REGISTER_NODE (exception_punt_socket_node) More...
vlib_node_registration_t	punt_socket_rx_node
	(constructor) VLIB_REGISTER_NODE (punt_socket_rx_node) More...

Detailed Description

Local TCP/IP stack punt infrastructure.

Provides a set of VPP nodes together with the relevant APIs and CLI commands in order to adjust and dispatch packets from the VPP data plane to the local TCP/IP stack

Definition in file punt_node.c.

Macro Definition Documentation

foreach_punt_next

#define foreach_punt_next

Value:

_ (PUNT4, "ip4-punt")                         \
  _ (PUNT6, "ip6-punt")

Definition at line 47 of file punt_node.c.

punt_error [1/2]

#define punt_error	(		n,
			s
	)		PUNT_ERROR_##n,

Definition at line 41 of file punt_node.c.

punt_error [2/2]

#define punt_error	(		n,
			s
	)		s,

Definition at line 41 of file punt_node.c.

punt_next_punt

#define punt_next_punt

(

is_ip4

)

(is_ip4 ? PUNT_NEXT_PUNT4 : PUNT_NEXT_PUNT6)

Definition at line 67 of file punt_node.c.

Enumeration Type Documentation

punt_error_t

enum punt_error_t

Enumerator
PUNT_N_ERROR

Definition at line 39 of file punt_node.c.

punt_next_t

enum punt_next_t

Enumerator
PUNT_N_NEXT

Definition at line 51 of file punt_node.c.

punt_socket_rx_next_e

enum punt_socket_rx_next_e

Enumerator
PUNT_SOCKET_RX_NEXT_INTERFACE_OUTPUT
PUNT_SOCKET_RX_NEXT_IP4_LOOKUP
PUNT_SOCKET_RX_NEXT_IP6_LOOKUP
PUNT_SOCKET_RX_N_NEXT

Definition at line 59 of file punt_node.c.

Function Documentation

exception_punt_socket()

static uword exception_punt_socket ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 433 of file punt_node.c.

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format_punt_trace()

static u8* format_punt_trace ( u8 *  s, va_list *  va  )

static

Definition at line 498 of file punt_node.c.

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format_udp_punt_trace()

static u8* format_udp_punt_trace ( u8 *  s, va_list *  args  )

static

Definition at line 230 of file punt_node.c.

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ip4_proto_punt_socket()

static uword ip4_proto_punt_socket ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 417 of file punt_node.c.

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ip6_proto_punt_socket()

static uword ip6_proto_punt_socket ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 425 of file punt_node.c.

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punt_socket_inline()

static uword punt_socket_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame, punt_type_t  pt, ip_address_family_t  af  )

inlinestatic

VLIB buffer chain -> Unix iovec(s).

Definition at line 249 of file punt_node.c.

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punt_socket_rx()

static uword punt_socket_rx ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame  )

static

Definition at line 605 of file punt_node.c.

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punt_socket_rx_fd()

static uword punt_socket_rx_fd ( vlib_main_t *  vm, vlib_node_runtime_t *  node, u32  fd  )

static

Definition at line 510 of file punt_node.c.

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udp46_punt_inline()

static uword udp46_punt_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame, int  is_ip4  )

inlinestatic

IPv4/IPv6 UDP punt node main loop.

This is the main loop inline function for IPv4/IPv6 UDP punt transition node.

Parameters

vm	vlib_main_t corresponding to the current thread
node	vlib_node_runtime_t
frame	vlib_frame_t whose contents should be dispatched
is_ipv4	indicates if called for IPv4 or IPv6 node

Definition at line 80 of file punt_node.c.

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udp4_punt_node()

VLIB_NODE_FN() udp4_punt_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	from_frame
	)

IPv4 UDP punt node.

Node Identifier:

ip4-udp-punt

This is the IPv4 UDP punt transition node. It is registered as a next node for the "ip4-udp-lookup" handling UDP port(s) requested for punt. The buffer's current data pointer is adjusted to the original packet IPv4 header. All buffers are dispatched to "error-punt".

Parameters

vm	vlib_main_t corresponding to the current thread
node	vlib_node_runtime_t
frame	vlib_frame_t whose contents should be dispatched

Graph mechanics: next index usage

Sets:

• vnet_buffer(b)->current_data
• vnet_buffer(b)->current_len

Next Index:

• Dispatches the packet to the "error-punt" node

Definition at line 153 of file punt_node.c.

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udp4_punt_socket()

static uword udp4_punt_socket ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 403 of file punt_node.c.

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udp6_punt_node()

VLIB_NODE_FN() udp6_punt_node	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	node,
		vlib_frame_t *	from_frame
	)

IPv6 UDP punt node.

Node Identifier:

ip6-udp-punt

This is the IPv6 UDP punt transition node. It is registered as a next node for the "ip6-udp-lookup" handling UDP port(s) requested for punt. The buffer's current data pointer is adjusted to the original packet IPv6 header. All buffers are dispatched to "error-punt".

Parameters

vm	vlib_main_t corresponding to the current thread
node	vlib_node_runtime_t
frame	vlib_frame_t whose contents should be dispatched

Graph mechanics: next index usage

Sets:

• vnet_buffer(b)->current_data
• vnet_buffer(b)->current_len

Next Index:

• Dispatches the packet to the "error-punt" node

Definition at line 181 of file punt_node.c.

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udp6_punt_socket()

static uword udp6_punt_socket ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  from_frame  )

static

Definition at line 410 of file punt_node.c.

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Variable Documentation

exception_punt_socket_node

vlib_node_registration_t exception_punt_socket_node

Initial value:

= {
  .function = exception_punt_socket,
  .name = "exception-punt-socket",
  .format_trace = format_udp_punt_trace,
  .flags = VLIB_NODE_FLAG_IS_DROP,
  .vector_size = sizeof (u32),
  .n_errors = PUNT_N_ERROR,
  .error_strings = punt_error_strings,
}

(constructor) VLIB_REGISTER_NODE (exception_punt_socket_node)

Definition at line 480 of file punt_node.c.

ip4_proto_punt_socket_node

vlib_node_registration_t ip4_proto_punt_socket_node

Initial value:

= {
  .function = ip4_proto_punt_socket,
  .name = "ip4-proto-punt-socket",
  .format_trace = format_udp_punt_trace,
  .flags = VLIB_NODE_FLAG_IS_DROP,
  
  .vector_size = sizeof (u32),
  .n_errors = PUNT_N_ERROR,
  .error_strings = punt_error_strings,
}

(constructor) VLIB_REGISTER_NODE (ip4_proto_punt_socket_node)

Definition at line 461 of file punt_node.c.

ip6_proto_punt_socket_node

vlib_node_registration_t ip6_proto_punt_socket_node

Initial value:

= {
  .function = ip6_proto_punt_socket,
  .name = "ip6-proto-punt-socket",
  .format_trace = format_udp_punt_trace,
  .flags = VLIB_NODE_FLAG_IS_DROP,
  .vector_size = sizeof (u32),
  .n_errors = PUNT_N_ERROR,
  .error_strings = punt_error_strings,
}

(constructor) VLIB_REGISTER_NODE (ip6_proto_punt_socket_node)

Definition at line 471 of file punt_node.c.

punt_error_strings

char* punt_error_strings[]

static

Initial value:

= {
#define punt_error(n,s) 


punt_error (NONE, "no error")
punt_error (UDP_PORT, "udp port punt")
punt_error (SOCKET_RX, "Socket RX")
punt_error (SOCKET_TX, "Socket TX")
punt_error (SOCKET_RX_ERROR, "Socket RX error")
punt_error (SOCKET_TX_ERROR, "Socket TX error")
punt_error (NOBUFFER, "buffer allocation failure")
punt_error (READV, "socket read failure")
punt_error (ACTION, "invalid packet descriptor")


}

Definition at line 126 of file punt_node.c.

punt_socket_rx_node

vlib_node_registration_t punt_socket_rx_node

Initial value:

=
{
 .function = punt_socket_rx,
 .name = "punt-socket-rx",
 .flags = VLIB_NODE_FLAG_TRACE_SUPPORTED,
 .type = VLIB_NODE_TYPE_INPUT,
 .state = VLIB_NODE_STATE_INTERRUPT,
 .vector_size = 1,
 .n_errors = PUNT_N_ERROR,
 .error_strings = punt_error_strings,
 .n_next_nodes = PUNT_SOCKET_RX_N_NEXT,
 .next_nodes = {
    [PUNT_SOCKET_RX_NEXT_INTERFACE_OUTPUT] = "interface-output",
    [PUNT_SOCKET_RX_NEXT_IP4_LOOKUP] = "ip4-lookup",
    [PUNT_SOCKET_RX_NEXT_IP6_LOOKUP] = "ip6-lookup",
  },
 .format_trace = format_punt_trace,
}

(constructor) VLIB_REGISTER_NODE (punt_socket_rx_node)

Definition at line 621 of file punt_node.c.

udp4_punt_node

vlib_node_registration_t udp4_punt_node

Initial value:

= {
  .name = "ip4-udp-punt",
  
  .vector_size = sizeof (u32),

  .n_errors = PUNT_N_ERROR,
  .error_strings = punt_error_strings,

  .n_next_nodes = PUNT_N_NEXT,
  .next_nodes = {
#define _(s,n) 
     foreach_punt_next

  },
}

(constructor) VLIB_REGISTER_NODE (udp4_punt_node)

Definition at line 189 of file punt_node.c.

udp4_punt_socket_node

vlib_node_registration_t udp4_punt_socket_node

Initial value:

= {
  .function = udp4_punt_socket,
  .name = "ip4-udp-punt-socket",
  .format_trace = format_udp_punt_trace,
  .flags = VLIB_NODE_FLAG_IS_DROP,
  
  .vector_size = sizeof (u32),
  .n_errors = PUNT_N_ERROR,
  .error_strings = punt_error_strings,
}

(constructor) VLIB_REGISTER_NODE (udp4_punt_socket_node)

Definition at line 442 of file punt_node.c.

udp6_punt_node

vlib_node_registration_t udp6_punt_node

Initial value:

= {
  .name = "ip6-udp-punt",
  
  .vector_size = sizeof (u32),

  .n_errors = PUNT_N_ERROR,
  .error_strings = punt_error_strings,

  .n_next_nodes = PUNT_N_NEXT,
  .next_nodes = {
#define _(s,n) 
     foreach_punt_next

  },
}

(constructor) VLIB_REGISTER_NODE (udp6_punt_node)

Definition at line 205 of file punt_node.c.

udp6_punt_socket_node

vlib_node_registration_t udp6_punt_socket_node

Initial value:

= {
  .function = udp6_punt_socket,
  .name = "ip6-udp-punt-socket",
  .format_trace = format_udp_punt_trace,
  .flags = VLIB_NODE_FLAG_IS_DROP,
  .vector_size = sizeof (u32),
  .n_errors = PUNT_N_ERROR,
  .error_strings = punt_error_strings,
}

(constructor) VLIB_REGISTER_NODE (udp6_punt_socket_node)

Definition at line 452 of file punt_node.c.