flowperpkt.h File Reference

flow-per-packet plugin header file More...

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Data Structures
struct	flowperpkt_main_t

Enumerations
enum	flowperpkt_variant_t { FLOW_VARIANT_IPV4, FLOW_VARIANT_L2, FLOW_N_VARIANTS }

Functions
void	flowperpkt_flush_callback_ipv4 (void)
void	flowperpkt_flush_callback_l2 (void)

Variables
flowperpkt_main_t	flowperpkt_main
vlib_node_registration_t	flowperpkt_ipv4_node
	IPFIX ipv4 flow-per-packet graph node. More...

Detailed Description

flow-per-packet plugin header file

Definition in file flowperpkt.h.

Enumeration Type Documentation

enum flowperpkt_variant_t

Enumerator
FLOW_VARIANT_IPV4
FLOW_VARIANT_L2
FLOW_N_VARIANTS

Definition at line 68 of file flowperpkt.h.

Function Documentation

void flowperpkt_flush_callback_ipv4

(

void

)

Definition at line 313 of file node.c.

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void flowperpkt_flush_callback_l2

(

void

)

Definition at line 312 of file l2_node.c.

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Variable Documentation

vlib_node_registration_t flowperpkt_ipv4_node

Initial value:

= {
  .function = flowperpkt_ipv4_node_fn,
  .name = "flowperpkt-ipv4",
  .vector_size = sizeof (u32),
  .format_trace = format_flowperpkt_ipv4_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,

  .n_errors = ARRAY_LEN(flowperpkt_ipv4_error_strings),
  .error_strings = flowperpkt_ipv4_error_strings,

  .n_next_nodes = FLOWPERPKT_IPV4_N_NEXT,

  
  .next_nodes = {
    [FLOWPERPKT_IPV4_NEXT_DROP] = "error-drop",
    
    [FLOWPERPKT_IPV4_NEXT_LOOKUP] = "ip4-lookup",
  },
}

IPFIX ipv4 flow-per-packet graph node.

Node Identifier:

flowperpkt-ipv4

This is the IPFIX flow-record-per-packet node.

Parameters

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

Graph mechanics: buffer metadata, next index usage

Uses:

• vnet_buffer(b)->ip.save_rewrite_length
  • tells the node the length of the rewrite which was applied in ip4/6_rewrite_inline, allows the code to find the IP header without having to parse L2 headers, or make stupid assumptions about their length.
• vnet_buffer(b)->flags & VLIB_BUFFER_FLOW_REPORT
  • Used to suppress flow record generation for flow record packets.

Sets:

• vnet_buffer(b)->flags & VLIB_BUFFER_FLOW_REPORT
  • To suppress flow record generation for flow record packets

Next Index:

• Next configured output feature on the interface, usually "interface-output." Generated flow records head for ip4-lookup(constructor) VLIB_REGISTER_NODE (flowperpkt_ipv4_node)

Definition at line 547 of file node.c.

flowperpkt_main_t flowperpkt_main

Definition at line 54 of file flowperpkt.c.