BFD UDP transport layer implementation. More...

Include dependency graph for bfd_udp.c:

Data Structures
struct	bfd_udp_main_t

struct	bfd_rpc_update_t

Macros
#define	foreach_bfd_udp_error(F)

#define	F(sym, string) static char BFD_UDP_ERR_##sym##_STR[] = string;

#define	F(sym, string) BFD_UDP_ERR_##sym##_STR,

#define	F(sym, str) BFD_UDP_ERROR_##sym,

#define	foreach_bfd_udp_echo_error(F)

#define	F(sym, string) static char BFD_UDP_ECHO_ERR_##sym##_STR[] = string;

#define	F(sym, string) BFD_UDP_ECHO_ERR_##sym##_STR,

#define	F(sym, str) BFD_UDP_ECHO_ERROR_##sym,

Enumerations
enum	bfd_udp_input_next_t { BFD_UDP_INPUT_NEXT_NORMAL, BFD_UDP_INPUT_NEXT_REPLY_ARP, BFD_UDP_INPUT_NEXT_REPLY_REWRITE, BFD_UDP_INPUT_N_NEXT }

enum	bfd_udp_error_t { foreach_bfd_udp_error }

enum	bfd_udp_echo_error_t { foreach_bfd_udp_echo_error }

Functions
vnet_api_error_t	bfd_udp_set_echo_source (u32 sw_if_index)
	set echo-source interface More...

vnet_api_error_t	bfd_udp_del_echo_source (u32 sw_if_index)

int	bfd_udp_is_echo_available (bfd_transport_e transport)
	check if the bfd udp layer is echo-capable at this time More...

static u16	bfd_udp_bs_idx_to_sport (u32 bs_idx)

int	bfd_udp_get_echo_src_ip4 (ip4_address_t *addr)

int	bfd_udp_get_echo_src_ip6 (ip6_address_t *addr)

void	bfd_udp_get_echo_source (int is_set, u32 sw_if_index, int have_usable_ip4, ip4_address_t ip4, int have_usable_ip6, ip6_address_t ip6)
	get echo source information - used by CLI More...

int	bfd_add_udp4_transport (vlib_main_t vm, u32 bi, const bfd_session_t bs, int is_echo)

int	bfd_add_udp6_transport (vlib_main_t vm, u32 bi, const bfd_session_t bs, int is_echo)

static void	bfd_create_frame_to_next_node (vlib_main_t *vm, u32 bi, u32 next_node)

int	bfd_udp_calc_next_node (const struct bfd_session_s bs, u32 next_node)

int	bfd_transport_udp4 (vlib_main_t vm, u32 bi, const struct bfd_session_s bs)
	transport packet over udpv4 More...

int	bfd_transport_udp6 (vlib_main_t vm, u32 bi, const struct bfd_session_s bs)
	transport packet over udpv6 More...

static bfd_session_t *	bfd_lookup_session (bfd_udp_main_t bum, const bfd_udp_key_t key)

static void	bfd_udp_key_init (bfd_udp_key_t key, u32 sw_if_index, const ip46_address_t local_addr, const ip46_address_t *peer_addr)

static vnet_api_error_t	bfd_udp_add_session_internal (bfd_udp_main_t bum, u32 sw_if_index, u32 desired_min_tx_usec, u32 required_min_rx_usec, u8 detect_mult, const ip46_address_t local_addr, const ip46_address_t peer_addr, bfd_session_t *bs_out)

static vnet_api_error_t	bfd_udp_validate_api_input (u32 sw_if_index, const ip46_address_t local_addr, const ip46_address_t peer_addr)

static vnet_api_error_t	bfd_udp_find_session_by_api_input (u32 sw_if_index, const ip46_address_t local_addr, const ip46_address_t peer_addr, bfd_session_t **bs_out)

static vnet_api_error_t	bfd_api_verify_common (u32 sw_if_index, u32 desired_min_tx_usec, u32 required_min_rx_usec, u8 detect_mult, const ip46_address_t local_addr, const ip46_address_t peer_addr)

static void	bfd_udp_del_session_internal (bfd_session_t *bs)

vnet_api_error_t	bfd_udp_add_session (u32 sw_if_index, const ip46_address_t local_addr, const ip46_address_t peer_addr, u32 desired_min_tx_usec, u32 required_min_rx_usec, u8 detect_mult, u8 is_authenticated, u32 conf_key_id, u8 bfd_key_id)
	create a new bfd session More...

vnet_api_error_t	bfd_udp_mod_session (u32 sw_if_index, const ip46_address_t local_addr, const ip46_address_t peer_addr, u32 desired_min_tx_usec, u32 required_min_rx_usec, u8 detect_mult)
	modify existing session More...

vnet_api_error_t	bfd_udp_del_session (u32 sw_if_index, const ip46_address_t local_addr, const ip46_address_t peer_addr)
	delete existing session More...

vnet_api_error_t	bfd_udp_session_set_flags (u32 sw_if_index, const ip46_address_t local_addr, const ip46_address_t peer_addr, u8 admin_up_down)
	set session admin down/up More...

vnet_api_error_t	bfd_udp_auth_activate (u32 sw_if_index, const ip46_address_t local_addr, const ip46_address_t peer_addr, u32 conf_key_id, u8 key_id, u8 is_delayed)
	activate authentication for existing session More...

vnet_api_error_t	bfd_udp_auth_deactivate (u32 sw_if_index, const ip46_address_t local_addr, const ip46_address_t peer_addr, u8 is_delayed)
	deactivate authentication for existing session More...

static void	bfd_udp4_find_headers (vlib_buffer_t b, ip4_header_t ip4, udp_header_t *udp)

static bfd_udp_error_t	bfd_udp4_verify_transport (const ip4_header_t ip4, const udp_header_t udp, const bfd_session_t *bs)

static void	bfd_rpc_update_session_cb (const bfd_rpc_update_t *a)

static void	bfd_rpc_update_session (u32 bs_idx, const bfd_pkt_t *pkt)

static bfd_udp_error_t	bfd_udp4_scan (vlib_main_t vm, vlib_node_runtime_t rt, vlib_buffer_t b, bfd_session_t *bs_out)

static void	bfd_udp6_find_headers (vlib_buffer_t b, ip6_header_t ip6, udp_header_t *udp)

static bfd_udp_error_t	bfd_udp6_verify_transport (const ip6_header_t ip6, const udp_header_t udp, const bfd_session_t *bs)

static bfd_udp_error_t	bfd_udp6_scan (vlib_main_t vm, vlib_node_runtime_t rt, vlib_buffer_t b, bfd_session_t *bs_out)

static uword	bfd_udp_input (vlib_main_t vm, vlib_node_runtime_t rt, vlib_frame_t *f, int is_ipv6)

static uword	bfd_udp4_input (vlib_main_t vm, vlib_node_runtime_t rt, vlib_frame_t *f)

static uword	bfd_udp6_input (vlib_main_t vm, vlib_node_runtime_t rt, vlib_frame_t *f)

static uword	bfd_udp_echo_input (vlib_main_t vm, vlib_node_runtime_t rt, vlib_frame_t *f, int is_ipv6)

static uword	bfd_udp_echo4_input (vlib_main_t vm, vlib_node_runtime_t rt, vlib_frame_t *f)

u8 *	bfd_echo_input_format_trace (u8 s, va_list args)

static uword	bfd_udp_echo6_input (vlib_main_t vm, vlib_node_runtime_t rt, vlib_frame_t *f)

static clib_error_t *	bfd_udp_sw_if_add_del (vnet_main_t *vnm, u32 sw_if_index, u32 is_create)

	VNET_SW_INTERFACE_ADD_DEL_FUNCTION (bfd_udp_sw_if_add_del)

static clib_error_t *	bfd_udp_init (vlib_main_t *vm)

Variables
static vlib_node_registration_t	bfd_udp4_input_node
	(constructor) VLIB_REGISTER_NODE (bfd_udp4_input_node) More...

static vlib_node_registration_t	bfd_udp6_input_node
	(constructor) VLIB_REGISTER_NODE (bfd_udp6_input_node) More...

static vlib_node_registration_t	bfd_udp_echo4_input_node
	(constructor) VLIB_REGISTER_NODE (bfd_udp_echo4_input_node) More...

static vlib_node_registration_t	bfd_udp_echo6_input_node
	(constructor) VLIB_REGISTER_NODE (bfd_udp_echo6_input_node) More...

bfd_udp_main_t	bfd_udp_main

static char *	bfd_udp_error_strings []

static char *	bfd_udp_echo_error_strings []

Detailed Description

BFD UDP transport layer implementation.

Definition in file bfd_udp.c.

Macro Definition Documentation

#define F	(	sym,
		string
	)	static char BFD_UDP_ERR_##sym##_STR[] = string;

Definition at line 835 of file bfd_udp.c.

#define F	(	sym,
		string
	)	BFD_UDP_ERR_##sym##_STR,

Definition at line 835 of file bfd_udp.c.

#define F	(	sym,
		str
	)	BFD_UDP_ERROR_##sym,

Definition at line 835 of file bfd_udp.c.

#define F	(	sym,
		string
	)	static char BFD_UDP_ECHO_ERR_##sym##_STR[] = string;

Definition at line 835 of file bfd_udp.c.

#define F	(	sym,
		string
	)	BFD_UDP_ECHO_ERR_##sym##_STR,

Definition at line 835 of file bfd_udp.c.

#define F	(	sym,
		str
	)	BFD_UDP_ECHO_ERROR_##sym,

Definition at line 835 of file bfd_udp.c.

foreach_bfd_udp_echo_error ( F )

Value:

F (NONE, "good bfd echo packets (processed)") \

F (BAD, "invalid bfd echo packets")

F

#define F(sym, string)

Definition: bfd_udp.c:835

Definition at line 819 of file bfd_udp.c.

foreach_bfd_udp_error ( F )

Value:

F (NONE, "good bfd packets (processed)") \

F (BAD, "invalid bfd packets")

F

#define F(sym, string)

Definition: bfd_udp.c:835

Definition at line 796 of file bfd_udp.c.

Enumeration Type Documentation

enum bfd_udp_echo_error_t

Enumerator
foreach_bfd_udp_echo_error

Definition at line 833 of file bfd_udp.c.

enum bfd_udp_error_t

Enumerator
foreach_bfd_udp_error

Definition at line 810 of file bfd_udp.c.

enum bfd_udp_input_next_t

Enumerator
BFD_UDP_INPUT_NEXT_NORMAL
BFD_UDP_INPUT_NEXT_REPLY_ARP
BFD_UDP_INPUT_NEXT_REPLY_REWRITE
BFD_UDP_INPUT_N_NEXT

Definition at line 787 of file bfd_udp.c.

Function Documentation

int bfd_add_udp4_transport	(	vlib_main_t *	vm,
		u32	bi,
		const bfd_session_t *	bs,
		int	is_echo
	)

Definition at line 242 of file bfd_udp.c.

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int bfd_add_udp6_transport	(	vlib_main_t *	vm,
		u32	bi,
		const bfd_session_t *	bs,
		int	is_echo
	)

Definition at line 297 of file bfd_udp.c.

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static vnet_api_error_t bfd_api_verify_common	(	u32	sw_if_index,
		u32	desired_min_tx_usec,
		u32	required_min_rx_usec,
		u8	detect_mult,
		const ip46_address_t *	local_addr,
		const ip46_address_t *	peer_addr
	)

static

Definition at line 618 of file bfd_udp.c.

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static void bfd_create_frame_to_next_node	(	vlib_main_t *	vm,
		u32	bi,
		u32	next_node
	)

static

Definition at line 364 of file bfd_udp.c.

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u8* bfd_echo_input_format_trace	(	u8 *	s,
		va_list *	args
	)

Definition at line 1372 of file bfd_udp.c.

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static bfd_session_t* bfd_lookup_session	(	bfd_udp_main_t *	bum,
		const bfd_udp_key_t *	key
	)

static

Definition at line 434 of file bfd_udp.c.

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static void bfd_rpc_update_session	(	u32	bs_idx,
		const bfd_pkt_t *	pkt
	)

static

Definition at line 913 of file bfd_udp.c.

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static void bfd_rpc_update_session_cb ( const bfd_rpc_update_t * a )

static

Definition at line 907 of file bfd_udp.c.

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int bfd_transport_udp4	(	vlib_main_t *	vm,
		u32	bi,
		const struct bfd_session_s *	bs
	)

transport packet over udpv4

Parameters

is_echo 1 if this is echo packet, 0 if control frame

Returns: 1 on success, 0 on failure

Definition at line 410 of file bfd_udp.c.

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int bfd_transport_udp6	(	vlib_main_t *	vm,
		u32	bi,
		const struct bfd_session_s *	bs
	)

transport packet over udpv6

Parameters

is_echo 1 if this is echo packet, 0 if control frame

Returns: 1 on success, 0 on failure

Definition at line 422 of file bfd_udp.c.

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static void bfd_udp4_find_headers	(	vlib_buffer_t *	b,
		ip4_header_t **	ip4,
		udp_header_t **	udp
	)

static

Definition at line 842 of file bfd_udp.c.

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static uword bfd_udp4_input	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		vlib_frame_t *	f
	)

static

Definition at line 1241 of file bfd_udp.c.

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static bfd_udp_error_t bfd_udp4_scan	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		vlib_buffer_t *	b,
		bfd_session_t **	bs_out
	)

static

Definition at line 926 of file bfd_udp.c.

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static bfd_udp_error_t bfd_udp4_verify_transport	(	const ip4_header_t *	ip4,
		const udp_header_t *	udp,
		const bfd_session_t *	bs
	)

static

Definition at line 866 of file bfd_udp.c.

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static void bfd_udp6_find_headers	(	vlib_buffer_t *	b,
		ip6_header_t **	ip6,
		udp_header_t **	udp
	)

static

Definition at line 999 of file bfd_udp.c.

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static uword bfd_udp6_input	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		vlib_frame_t *	f
	)

static

Definition at line 1272 of file bfd_udp.c.

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static bfd_udp_error_t bfd_udp6_scan	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		vlib_buffer_t *	b,
		bfd_session_t **	bs_out
	)

static

Definition at line 1068 of file bfd_udp.c.

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static bfd_udp_error_t bfd_udp6_verify_transport	(	const ip6_header_t *	ip6,
		const udp_header_t *	udp,
		const bfd_session_t *	bs
	)

static

Definition at line 1031 of file bfd_udp.c.

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vnet_api_error_t bfd_udp_add_session	(	u32	sw_if_index,
		const ip46_address_t *	local_addr,
		const ip46_address_t *	peer_addr,
		u32	desired_min_tx_usec,
		u32	required_min_rx_usec,
		u8	detect_mult,
		u8	is_authenticated,
		u32	conf_key_id,
		u8	bfd_key_id
	)

create a new bfd session

Definition at line 653 of file bfd_udp.c.

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static vnet_api_error_t bfd_udp_add_session_internal	(	bfd_udp_main_t *	bum,
		u32	sw_if_index,
		u32	desired_min_tx_usec,
		u32	required_min_rx_usec,
		u8	detect_mult,
		const ip46_address_t *	local_addr,
		const ip46_address_t *	peer_addr,
		bfd_session_t **	bs_out
	)

static

Definition at line 458 of file bfd_udp.c.

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vnet_api_error_t bfd_udp_auth_activate	(	u32	sw_if_index,
		const ip46_address_t *	local_addr,
		const ip46_address_t *	peer_addr,
		u32	conf_key_id,
		u8	key_id,
		u8	is_delayed
	)

activate authentication for existing session

Definition at line 750 of file bfd_udp.c.

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vnet_api_error_t bfd_udp_auth_deactivate	(	u32	sw_if_index,
		const ip46_address_t *	local_addr,
		const ip46_address_t *	peer_addr,
		u8	is_delayed
	)

deactivate authentication for existing session

Definition at line 772 of file bfd_udp.c.

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static u16 bfd_udp_bs_idx_to_sport ( u32 bs_idx )

static

Definition at line 147 of file bfd_udp.c.

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int bfd_udp_calc_next_node	(	const struct bfd_session_s *	bs,
		u32 *	next_node
	)

Definition at line 374 of file bfd_udp.c.

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vnet_api_error_t bfd_udp_del_echo_source ( u32 sw_if_index )

Definition at line 86 of file bfd_udp.c.

vnet_api_error_t bfd_udp_del_session	(	u32	sw_if_index,
		const ip46_address_t *	local_addr,
		const ip46_address_t *	peer_addr
	)

delete existing session

Definition at line 716 of file bfd_udp.c.

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static void bfd_udp_del_session_internal ( bfd_session_t * bs )

static

Definition at line 643 of file bfd_udp.c.

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static uword bfd_udp_echo4_input	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		vlib_frame_t *	f
	)

static

Definition at line 1365 of file bfd_udp.c.

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static uword bfd_udp_echo6_input	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		vlib_frame_t *	f
	)

static

Definition at line 1413 of file bfd_udp.c.

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static uword bfd_udp_echo_input	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		vlib_frame_t *	f,
		int	is_ipv6
	)

static

Definition at line 1304 of file bfd_udp.c.

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static vnet_api_error_t bfd_udp_find_session_by_api_input	(	u32	sw_if_index,
		const ip46_address_t *	local_addr,
		const ip46_address_t *	peer_addr,
		bfd_session_t **	bs_out
	)

static

Definition at line 588 of file bfd_udp.c.

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void bfd_udp_get_echo_source	(	int *	is_set,
		u32 *	sw_if_index,
		int *	have_usable_ip4,
		ip4_address_t *	ip4,
		int *	have_usable_ip6,
		ip6_address_t *	ip6
	)

get echo source information - used by CLI

Definition at line 224 of file bfd_udp.c.

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int bfd_udp_get_echo_src_ip4 ( ip4_address_t * addr )

Definition at line 161 of file bfd_udp.c.

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int bfd_udp_get_echo_src_ip6 ( ip6_address_t * addr )

Definition at line 195 of file bfd_udp.c.

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static clib_error_t* bfd_udp_init ( vlib_main_t * vm )

static

Definition at line 1480 of file bfd_udp.c.

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static uword bfd_udp_input	(	vlib_main_t *	vm,
		vlib_node_runtime_t *	rt,
		vlib_frame_t *	f,
		int	is_ipv6
	)

static

Definition at line 1147 of file bfd_udp.c.

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int bfd_udp_is_echo_available ( bfd_transport_e transport )

check if the bfd udp layer is echo-capable at this time

Returns: 1 if available, 0 otherwise

Definition at line 94 of file bfd_udp.c.

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static void bfd_udp_key_init	(	bfd_udp_key_t *	key,
		u32	sw_if_index,
		const ip46_address_t *	local_addr,
		const ip46_address_t *	peer_addr
	)

static

Definition at line 445 of file bfd_udp.c.

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vnet_api_error_t bfd_udp_mod_session	(	u32	sw_if_index,
		const ip46_address_t *	local_addr,
		const ip46_address_t *	peer_addr,
		u32	desired_min_tx_usec,
		u32	required_min_rx_usec,
		u8	detect_mult
	)

modify existing session

Definition at line 695 of file bfd_udp.c.

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vnet_api_error_t bfd_udp_session_set_flags	(	u32	sw_if_index,
		const ip46_address_t *	local_addr,
		const ip46_address_t *	peer_addr,
		u8	admin_up_down
	)

set session admin down/up

Definition at line 733 of file bfd_udp.c.

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vnet_api_error_t bfd_udp_set_echo_source ( u32 sw_if_index )

set echo-source interface

Definition at line 72 of file bfd_udp.c.

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static clib_error_t* bfd_udp_sw_if_add_del	(	vnet_main_t *	vnm,
		u32	sw_if_index,
		u32	is_create
	)

static

Definition at line 1443 of file bfd_udp.c.

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static vnet_api_error_t bfd_udp_validate_api_input	(	u32	sw_if_index,
		const ip46_address_t *	local_addr,
		const ip46_address_t *	peer_addr
	)

static

Definition at line 518 of file bfd_udp.c.

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VNET_SW_INTERFACE_ADD_DEL_FUNCTION ( bfd_udp_sw_if_add_del )

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Variable Documentation

static vlib_node_registration_t bfd_udp4_input_node

static

Initial value:

= {
  .function = bfd_udp4_input,
  .name = "bfd-udp4-input",
  .vector_size = sizeof (u32),
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = BFD_UDP_N_ERROR,
  .error_strings = bfd_udp_error_strings,
  .format_trace = bfd_input_format_trace,
  .n_next_nodes = BFD_UDP_INPUT_N_NEXT,
  .next_nodes =
      {
              [BFD_UDP_INPUT_NEXT_NORMAL] = "error-drop",
              [BFD_UDP_INPUT_NEXT_REPLY_ARP] = "ip4-arp",
              [BFD_UDP_INPUT_NEXT_REPLY_REWRITE] = "ip4-lookup",
      },
}

(constructor) VLIB_REGISTER_NODE (bfd_udp4_input_node)

Definition at line 64 of file bfd_udp.c.

static vlib_node_registration_t bfd_udp6_input_node

static

Initial value:

= {
  .function = bfd_udp6_input,
  .name = "bfd-udp6-input",
  .vector_size = sizeof (u32),
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = BFD_UDP_N_ERROR,
  .error_strings = bfd_udp_error_strings,
  .format_trace = bfd_input_format_trace,
  .n_next_nodes = BFD_UDP_INPUT_N_NEXT,
  .next_nodes =
      {
              [BFD_UDP_INPUT_NEXT_NORMAL] = "error-drop",
              [BFD_UDP_INPUT_NEXT_REPLY_ARP] = "ip6-discover-neighbor",
              [BFD_UDP_INPUT_NEXT_REPLY_REWRITE] = "ip6-lookup",
      },
}

(constructor) VLIB_REGISTER_NODE (bfd_udp6_input_node)

Definition at line 65 of file bfd_udp.c.

static vlib_node_registration_t bfd_udp_echo4_input_node

static

Initial value:

= {
  .function = bfd_udp_echo4_input,
  .name = "bfd-udp-echo4-input",
  .vector_size = sizeof (u32),
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = BFD_UDP_ECHO_N_ERROR,
  .error_strings = bfd_udp_error_strings,
  .format_trace = bfd_echo_input_format_trace,
  .n_next_nodes = BFD_UDP_INPUT_N_NEXT,
  .next_nodes =
      {
              [BFD_UDP_INPUT_NEXT_NORMAL] = "error-drop",
              [BFD_UDP_INPUT_NEXT_REPLY_ARP] = "ip4-arp",
              [BFD_UDP_INPUT_NEXT_REPLY_REWRITE] = "ip4-lookup",
      },
}

(constructor) VLIB_REGISTER_NODE (bfd_udp_echo4_input_node)

Definition at line 66 of file bfd_udp.c.

static vlib_node_registration_t bfd_udp_echo6_input_node

static

Initial value:

= {
  .function = bfd_udp_echo6_input,
  .name = "bfd-udp-echo6-input",
  .vector_size = sizeof (u32),
  .type = VLIB_NODE_TYPE_INTERNAL,
  .n_errors = BFD_UDP_ECHO_N_ERROR,
  .error_strings = bfd_udp_echo_error_strings,
  .format_trace = bfd_echo_input_format_trace,
  .n_next_nodes = BFD_UDP_INPUT_N_NEXT,
  .next_nodes =
      {
              [BFD_UDP_INPUT_NEXT_NORMAL] = "error-drop",
              [BFD_UDP_INPUT_NEXT_REPLY_ARP] = "ip6-discover-neighbor",
              [BFD_UDP_INPUT_NEXT_REPLY_REWRITE] = "ip6-lookup",
      },
}

(constructor) VLIB_REGISTER_NODE (bfd_udp_echo6_input_node)

Definition at line 67 of file bfd_udp.c.

char* bfd_udp_echo_error_strings[]

static

Initial value:

= {
#define F(sym, string) 
  foreach_bfd_udp_echo_error (F)
}

Definition at line 827 of file bfd_udp.c.

char* bfd_udp_error_strings[]

static

Initial value:

= {
#define F(sym, string) 
  foreach_bfd_udp_error (F)
}

Definition at line 804 of file bfd_udp.c.

bfd_udp_main_t bfd_udp_main

Definition at line 69 of file bfd_udp.c.

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