udp_ping_node.c File Reference

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Data Structures
struct	udp_ping_trace_t

Macros
#define	foreach_udp_ping_error   _(BADHBH, "Malformed hop-by-hop header")

Enumerations
enum	udp_ping_next_t {   UDP_PING_NEXT_DROP, UDP_PING_NEXT_PUNT, UDP_PING_NEXT_UDP_LOOKUP, UDP_PING_NEXT_ICMP,   UDP_PING_NEXT_IP6_LOOKUP, UDP_PING_NEXT_IP6_DROP, UDP_PING_N_NEXT }
enum	udp_ping_error_t { UDP_PING_N_ERROR }

Functions
uword	udp_ping_process (vlib_main_t *vm, vlib_node_runtime_t *rt, vlib_frame_t *f)
	UDP-Ping Process node. More...
int	ip6_hbh_ioam_trace_data_list_handler (vlib_buffer_t *b, ip6_header_t *ip, ip6_hop_by_hop_option_t *opt)
static u8 *	format_udp_ping_trace (u8 *s, va_list *args)
void	udp_ping_calculate_timer_interval (void)
void	ip46_udp_ping_set_flow (ip46_address_t src, ip46_address_t dst, u16 start_src_port, u16 end_src_port, u16 start_dst_port, u16 end_dst_port, u16 interval, u8 fault_det, u8 is_disable)
uword	unformat_port_range (unformat_input_t *input, va_list *args)
static clib_error_t *	set_udp_ping_command_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	show_udp_ping_summary_cmd_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
void	udp_ping_analyse_hbh (vlib_buffer_t *b0, u32 flow_id, u16 src_port, u16 dst_port, ip6_hop_by_hop_option_t *opt0, ip6_hop_by_hop_option_t *limit0, u16 len)
	HopByHop analyse function for udp-ping response. More...
void	udp_ping_local_analyse (vlib_node_runtime_t *node, vlib_buffer_t *b0, ip6_header_t *ip0, ip6_hop_by_hop_header_t *hbh0, u16 *next0)
	UDP-Ping request/response handler function. More...
static uword	udp_ping_local_node_fn (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	udp ping request/response packet receive node. More...
static clib_error_t *	udp_ping_init (vlib_main_t *vm)

Variables
static char *	udp_ping_error_strings []
udp_ping_main_t	udp_ping_main
static vlib_node_registration_t	udp_ping_node
	(constructor) VLIB_REGISTER_NODE (udp_ping_node) More...
static vlib_cli_command_t	set_udp_ping_command
	(constructor) VLIB_CLI_COMMAND (set_udp_ping_command) More...
static vlib_cli_command_t	show_udp_ping_cmd
	(constructor) VLIB_CLI_COMMAND (show_udp_ping_cmd) More...
static vlib_node_registration_t	udp_ping_local
	(constructor) VLIB_REGISTER_NODE (udp_ping_local) More...

Macro Definition Documentation

foreach_udp_ping_error

#define foreach_udp_ping_error   _(BADHBH, "Malformed hop-by-hop header")

Definition at line 41 of file udp_ping_node.c.

Enumeration Type Documentation

udp_ping_error_t

enum udp_ping_error_t

Enumerator
UDP_PING_N_ERROR

Definition at line 44 of file udp_ping_node.c.

udp_ping_next_t

enum udp_ping_next_t

Enumerator
UDP_PING_NEXT_DROP
UDP_PING_NEXT_PUNT
UDP_PING_NEXT_UDP_LOOKUP
UDP_PING_NEXT_ICMP
UDP_PING_NEXT_IP6_LOOKUP
UDP_PING_NEXT_IP6_DROP
UDP_PING_N_NEXT

Definition at line 30 of file udp_ping_node.c.

Function Documentation

format_udp_ping_trace()

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

static

Definition at line 81 of file udp_ping_node.c.

ip46_udp_ping_set_flow()

void ip46_udp_ping_set_flow	(	ip46_address_t	src,
		ip46_address_t	dst,
		u16	start_src_port,
		u16	end_src_port,
		u16	start_dst_port,
		u16	end_dst_port,
		u16	interval,
		u8	fault_det,
		u8	is_disable
	)

Definition at line 132 of file udp_ping_node.c.

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ip6_hbh_ioam_trace_data_list_handler()

int ip6_hbh_ioam_trace_data_list_handler	(	vlib_buffer_t *	b,
		ip6_header_t *	ip,
		ip6_hop_by_hop_option_t *	opt
	)

Definition at line 255 of file ip6_ioam_trace.c.

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set_udp_ping_command_fn()

static clib_error_t* set_udp_ping_command_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 262 of file udp_ping_node.c.

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show_udp_ping_summary_cmd_fn()

static clib_error_t* show_udp_ping_summary_cmd_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 318 of file udp_ping_node.c.

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udp_ping_analyse_hbh()

void udp_ping_analyse_hbh	(	vlib_buffer_t *	b0,
		u32	flow_id,
		u16	src_port,
		u16	dst_port,
		ip6_hop_by_hop_option_t *	opt0,
		ip6_hop_by_hop_option_t *	limit0,
		u16	len
	)

HopByHop analyse function for udp-ping response.

Walks through all hbh options present in udp-ping response and uses analyser library for the analysis.

Definition at line 435 of file udp_ping_node.c.

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udp_ping_calculate_timer_interval()

void udp_ping_calculate_timer_interval

(

void

)

Definition at line 106 of file udp_ping_node.c.

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udp_ping_init()

static clib_error_t* udp_ping_init ( vlib_main_t *  vm )

static

Definition at line 820 of file udp_ping_node.c.

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udp_ping_local_analyse()

void udp_ping_local_analyse	(	vlib_node_runtime_t *	node,
		vlib_buffer_t *	b0,
		ip6_header_t *	ip0,
		ip6_hop_by_hop_header_t *	hbh0,
		u16 *	next0
	)

UDP-Ping request/response handler function.

Checks udp-ping packet type - request/response and handles them. If not udp-ping packet then, strips off hbh options and enques packet to protocol registered node to enable next protocol processing.

Definition at line 522 of file udp_ping_node.c.

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udp_ping_local_node_fn()

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

static

udp ping request/response packet receive node.

Node Identifier:

udp-ping-local

This function receives udp ping request/response packets and process them. For request packets, response is created and sent. For response packets, they are analysed and results stored.

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, next index usage

Uses:

• udp_ping_local_analyse(node, p0, ip0, hbh0, &next0)
  • Checks packet type - request/respnse and process them.

Next Index:

• Dispatches the packet to ip6-lookup/ip6-drop depending on type of packet.

Definition at line 638 of file udp_ping_node.c.

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udp_ping_process()

uword udp_ping_process	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		vlib_frame_t *	f
	)

UDP-Ping Process node.

Node Identifier:

udp-ping-process

This is process node which wakes up when periodically to send out udp probe packets for all configured sessions.

Parameters

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

Definition at line 399 of file udp_ping_node.c.

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unformat_port_range()

uword unformat_port_range	(	unformat_input_t *	input,
		va_list *	args
	)

Definition at line 207 of file udp_ping_node.c.

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Variable Documentation

set_udp_ping_command

vlib_cli_command_t set_udp_ping_command

static

Initial value:

=
{
  .path = "set udp-ping",
  .short_help =
      "set udp-ping src <local IPv6 address>  src-port-range <local port range> \
      dst <remote IPv6 address> dst-port-range <destination port range> \
      interval <time interval in sec for which ping packet will be sent> \
      [disable]",
  .function = set_udp_ping_command_fn,
}

(constructor) VLIB_CLI_COMMAND (set_udp_ping_command)

Definition at line 305 of file udp_ping_node.c.

show_udp_ping_cmd

vlib_cli_command_t show_udp_ping_cmd

static

Initial value:

=
{
  .path = "show udp-ping summary",
  .short_help = "Summary of udp-ping",
  .function = show_udp_ping_summary_cmd_fn,
}

(constructor) VLIB_CLI_COMMAND (show_udp_ping_cmd)

Definition at line 378 of file udp_ping_node.c.

udp_ping_error_strings

char* udp_ping_error_strings[]

static

Initial value:

= {
#define _(sym,string) 
  foreach_udp_ping_error
 
}

Definition at line 52 of file udp_ping_node.c.

udp_ping_local

vlib_node_registration_t udp_ping_local

static

Initial value:

=
{
  .function = udp_ping_local_node_fn,
  .name = "udp-ping-local",
  .vector_size = sizeof (u32),
  .format_trace = format_udp_ping_trace,
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_next_nodes = UDP_PING_N_NEXT,
  .n_errors = UDP_PING_N_ERROR,
  .error_strings = udp_ping_error_strings,
  .next_nodes =
    {
      [UDP_PING_NEXT_DROP] = "error-drop",
      [UDP_PING_NEXT_PUNT] = "error-punt",
      [UDP_PING_NEXT_UDP_LOOKUP] = "ip6-udp-lookup",
      [UDP_PING_NEXT_ICMP] = "ip6-icmp-input",
      [UDP_PING_NEXT_IP6_LOOKUP] = "ip6-lookup",
      [UDP_PING_NEXT_IP6_DROP] = "ip6-drop",
    },
}

(constructor) VLIB_REGISTER_NODE (udp_ping_local)

Definition at line 797 of file udp_ping_node.c.

udp_ping_main

udp_ping_main_t udp_ping_main

Definition at line 58 of file udp_ping_node.c.

udp_ping_node

vlib_node_registration_t udp_ping_node

static

Initial value:

=
{
  .function = udp_ping_process,
  .type = VLIB_NODE_TYPE_PROCESS,
  .name = "udp-ping-process",
}

(constructor) VLIB_REGISTER_NODE (udp_ping_node)

Definition at line 97 of file udp_ping_node.c.