adj_midchain.c File Reference

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Data Structures
struct	adj_midchain_tx_trace_t_
	Trace data for packets traversing the midchain tx node. More...

Typedefs
typedef struct adj_midchain_tx_trace_t_	adj_midchain_tx_trace_t
	Trace data for packets traversing the midchain tx node. More...

Functions
static uword	adj_midchain_tx_inline (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame, int interface_count)
static u8 *	format_adj_midchain_tx_trace (u8 *s, va_list *args)
static uword	adj_midchain_tx (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
static uword	adj_midchain_tx_no_count (vlib_main_t *vm, vlib_node_runtime_t *node, vlib_frame_t *frame)
	VNET_FEATURE_INIT (adj_midchain_tx_ip4, static)
	VNET_FEATURE_INIT (adj_midchain_tx_no_count_ip4, static)
	VNET_FEATURE_INIT (adj_midchain_tx_ip6, static)
	VNET_FEATURE_INIT (adj_midchain_tx_no_count_ip6, static)
	VNET_FEATURE_INIT (adj_midchain_tx_mpls, static)
	VNET_FEATURE_INIT (adj_midchain_tx_no_count_mpls, static)
	VNET_FEATURE_INIT (adj_midchain_tx_ethernet, static)
	VNET_FEATURE_INIT (adj_midchain_tx_no_count_ethernet, static)
	VNET_FEATURE_INIT (adj_midchain_tx_nsh, static)
	VNET_FEATURE_INIT (adj_midchain_tx_no_count_nsh, static)
static u32	adj_get_midchain_node (vnet_link_t link)
static u8	adj_midchain_get_feature_arc_index_for_link_type (const ip_adjacency_t *adj)
static u32	adj_nbr_midchain_get_tx_node (ip_adjacency_t *adj)
static u32	adj_nbr_midchain_get_feature_node (ip_adjacency_t *adj)
void	adj_midchain_teardown (ip_adjacency_t *adj)
	adj_midchain_setup More...
void	adj_midchain_setup (adj_index_t adj_index, adj_midchain_fixup_t fixup, const void *data, adj_flags_t flags)
	adj_midchain_setup More...
void	adj_nbr_midchain_update_rewrite (adj_index_t adj_index, adj_midchain_fixup_t fixup, const void *fixup_data, adj_flags_t flags, u8 *rewrite)
	adj_nbr_midchain_update_rewrite More...
void	adj_nbr_midchain_unstack (adj_index_t adj_index)
	adj_nbr_midchain_unstack More...
void	adj_nbr_midchain_stack_on_fib_entry (adj_index_t ai, fib_node_index_t fei, fib_forward_chain_type_t fct)
	[re]stack a midchain. More...
void	adj_nbr_midchain_stack (adj_index_t adj_index, const dpo_id_t *next)
	adj_nbr_midchain_stack More...
int	adj_ndr_midchain_recursive_loop_detect (adj_index_t ai, fib_node_index_t **entry_indicies)
	descend the FIB graph looking for loops More...
u8 *	format_adj_midchain (u8 *s, va_list *ap)
	Format a midchain adjacency. More...
static void	adj_dpo_lock (dpo_id_t *dpo)
static void	adj_dpo_unlock (dpo_id_t *dpo)
void	adj_midchain_module_init (void)
	Module initialisation. More...

Variables
static u32	adj_midchain_tx_feature_node [VNET_LINK_NUM]
	The two midchain tx feature node indices. More...
static u32	adj_midchain_tx_no_count_feature_node [VNET_LINK_NUM]
static u32 *	adj_midchain_feat_count_per_sw_if_index [VNET_LINK_NUM]
static vlib_node_registration_t	adj_midchain_tx_node
	(constructor) VLIB_REGISTER_NODE (adj_midchain_tx_node) More...
static vlib_node_registration_t	adj_midchain_tx_no_count_node
	(constructor) VLIB_REGISTER_NODE (adj_midchain_tx_no_count_node) More...
static const dpo_vft_t	adj_midchain_dpo_vft
static const char *const	midchain_ip4_nodes []
	The per-protocol VLIB graph nodes that are assigned to a midchain object. More...
static const char *const	midchain_ip6_nodes []
static const char *const	midchain_mpls_nodes []
static const char *const	midchain_ethernet_nodes []
static const char *const	midchain_nsh_nodes []
static const char *const *const	midchain_nodes [DPO_PROTO_NUM]

Typedef Documentation

adj_midchain_tx_trace_t

typedef struct adj_midchain_tx_trace_t_ adj_midchain_tx_trace_t

Trace data for packets traversing the midchain tx node.

Function Documentation

adj_dpo_lock()

static void adj_dpo_lock ( dpo_id_t *  dpo )

static

Definition at line 750 of file adj_midchain.c.

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adj_dpo_unlock()

static void adj_dpo_unlock ( dpo_id_t *  dpo )

static

Definition at line 755 of file adj_midchain.c.

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adj_get_midchain_node()

static u32 adj_get_midchain_node ( vnet_link_t  link )

inlinestatic

Definition at line 370 of file adj_midchain.c.

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adj_midchain_get_feature_arc_index_for_link_type()

static u8 adj_midchain_get_feature_arc_index_for_link_type ( const ip_adjacency_t *  adj )

static

Definition at line 391 of file adj_midchain.c.

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adj_midchain_module_init()

void adj_midchain_module_init

(

void

)

Module initialisation.

Definition at line 810 of file adj_midchain.c.

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adj_midchain_setup()

void adj_midchain_setup	(	adj_index_t	adj_index,
		adj_midchain_fixup_t	fixup,
		const void *	data,
		adj_flags_t	flags
	)

adj_midchain_setup

Setup the adj as a mid-chain

Definition at line 480 of file adj_midchain.c.

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adj_midchain_teardown()

void adj_midchain_teardown

(

ip_adjacency_t *

adj

)

adj_midchain_setup

Setup the adj as a mid-chain

Definition at line 456 of file adj_midchain.c.

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adj_midchain_tx()

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

static

Definition at line 267 of file adj_midchain.c.

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adj_midchain_tx_inline()

static uword adj_midchain_tx_inline ( vlib_main_t *  vm, vlib_node_runtime_t *  node, vlib_frame_t *  frame, int  interface_count  )

inlinestatic

Definition at line 47 of file adj_midchain.c.

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adj_midchain_tx_no_count()

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

static

Definition at line 288 of file adj_midchain.c.

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adj_nbr_midchain_get_feature_node()

static u32 adj_nbr_midchain_get_feature_node ( ip_adjacency_t *  adj )

static

Definition at line 440 of file adj_midchain.c.

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adj_nbr_midchain_get_tx_node()

static u32 adj_nbr_midchain_get_tx_node ( ip_adjacency_t *  adj )

static

Definition at line 432 of file adj_midchain.c.

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adj_nbr_midchain_stack()

void adj_nbr_midchain_stack	(	adj_index_t	adj_index,
		const dpo_id_t *	next
	)

adj_nbr_midchain_stack

[re]stack a midchain.

Definition at line 674 of file adj_midchain.c.

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adj_nbr_midchain_stack_on_fib_entry()

void adj_nbr_midchain_stack_on_fib_entry	(	adj_index_t	adj_index,
		fib_node_index_t	fei,
		fib_forward_chain_type_t	fct
	)

[re]stack a midchain.

'Stacking' is the act of forming parent-child relationships in the data-plane graph. Since function performs recursive loop detection.

Parameters

adj_index	The index of the midchain to stack
fei	The FIB entry to stack on
fct	The chain type to use from the fib entry fowarding

Definition at line 603 of file adj_midchain.c.

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adj_nbr_midchain_unstack()

void adj_nbr_midchain_unstack

(

adj_index_t

adj_index

)

adj_nbr_midchain_unstack

unstack a midchain.

Unstack the adj. stack it on drop

Definition at line 571 of file adj_midchain.c.

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adj_nbr_midchain_update_rewrite()

void adj_nbr_midchain_update_rewrite	(	adj_index_t	adj_index,
		adj_midchain_fixup_t	fixup,
		const void *	fixup_data,
		adj_flags_t	flags,
		u8 *	rewrite
	)

adj_nbr_midchain_update_rewrite

Midchain Adjacency sub-type.

Update the adjacency's rewrite string. A NULL string implies the rewrite is reset (i.e. when ARP/ND entry is gone). NB: the adj being updated may be handling traffic in the DP.

Definition at line 532 of file adj_midchain.c.

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adj_ndr_midchain_recursive_loop_detect()

int adj_ndr_midchain_recursive_loop_detect	(	adj_index_t	ai,
		fib_node_index_t **	entry_indicies
	)

descend the FIB graph looking for loops

Parameters

ai	The adj index to traverse
entry_indicies)	A pointer to a vector of FIB entries already visited.

Definition at line 692 of file adj_midchain.c.

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format_adj_midchain()

u8* format_adj_midchain	(	u8 *	s,
		va_list *	ap
	)

Format a midchain adjacency.

Definition at line 719 of file adj_midchain.c.

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format_adj_midchain_tx_trace()

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

static

Definition at line 253 of file adj_midchain.c.

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VNET_FEATURE_INIT() [1/10]

VNET_FEATURE_INIT	(	adj_midchain_tx_ip4	,
		static
	)

VNET_FEATURE_INIT() [2/10]

VNET_FEATURE_INIT	(	adj_midchain_tx_no_count_ip4	,
		static
	)

VNET_FEATURE_INIT() [3/10]

VNET_FEATURE_INIT	(	adj_midchain_tx_ip6	,
		static
	)

VNET_FEATURE_INIT() [4/10]

VNET_FEATURE_INIT	(	adj_midchain_tx_no_count_ip6	,
		static
	)

VNET_FEATURE_INIT() [5/10]

VNET_FEATURE_INIT	(	adj_midchain_tx_mpls	,
		static
	)

VNET_FEATURE_INIT() [6/10]

VNET_FEATURE_INIT	(	adj_midchain_tx_no_count_mpls	,
		static
	)

VNET_FEATURE_INIT() [7/10]

VNET_FEATURE_INIT	(	adj_midchain_tx_ethernet	,
		static
	)

VNET_FEATURE_INIT() [8/10]

VNET_FEATURE_INIT	(	adj_midchain_tx_no_count_ethernet	,
		static
	)

VNET_FEATURE_INIT() [9/10]

VNET_FEATURE_INIT	(	adj_midchain_tx_nsh	,
		static
	)

VNET_FEATURE_INIT() [10/10]

VNET_FEATURE_INIT	(	adj_midchain_tx_no_count_nsh	,
		static
	)

Variable Documentation

adj_midchain_dpo_vft

const dpo_vft_t adj_midchain_dpo_vft

static

Initial value:

= {
    .dv_lock = adj_dpo_lock,
    .dv_unlock = adj_dpo_unlock,
    .dv_format = format_adj_midchain,
    .dv_get_urpf = adj_dpo_get_urpf,
}

Definition at line 760 of file adj_midchain.c.

adj_midchain_feat_count_per_sw_if_index

u32* adj_midchain_feat_count_per_sw_if_index[VNET_LINK_NUM]

static

Definition at line 33 of file adj_midchain.c.

adj_midchain_tx_feature_node

u32 adj_midchain_tx_feature_node[VNET_LINK_NUM]

static

The two midchain tx feature node indices.

Definition at line 30 of file adj_midchain.c.

adj_midchain_tx_no_count_feature_node

u32 adj_midchain_tx_no_count_feature_node[VNET_LINK_NUM]

static

Definition at line 31 of file adj_midchain.c.

adj_midchain_tx_no_count_node

vlib_node_registration_t adj_midchain_tx_no_count_node

static

Initial value:

= {
    .function = adj_midchain_tx_no_count,
    .name = "adj-midchain-tx-no-count",
    .vector_size = sizeof (u32),

    .format_trace = format_adj_midchain_tx_trace,

    .n_next_nodes = 1,
    .next_nodes = {
        [0] = "error-drop",
    },
}

(constructor) VLIB_REGISTER_NODE (adj_midchain_tx_no_count_node)

Definition at line 295 of file adj_midchain.c.

adj_midchain_tx_node

vlib_node_registration_t adj_midchain_tx_node

static

Initial value:

= {
    .function = adj_midchain_tx,
    .name = "adj-midchain-tx",
    .vector_size = sizeof (u32),

    .format_trace = format_adj_midchain_tx_trace,

    .n_next_nodes = 1,
    .next_nodes = {
        [0] = "error-drop",
    },
}

(constructor) VLIB_REGISTER_NODE (adj_midchain_tx_node)

Definition at line 274 of file adj_midchain.c.

midchain_ethernet_nodes

const char* const midchain_ethernet_nodes[]

static

Initial value:

=
{
    "adj-l2-midchain",
    NULL,
}

Definition at line 789 of file adj_midchain.c.

midchain_ip4_nodes

const char* const midchain_ip4_nodes[]

static

Initial value:

=
{
    "ip4-midchain",
    NULL,
}

The per-protocol VLIB graph nodes that are assigned to a midchain object.

this means that these graph nodes are ones from which a midchain is the parent object in the DPO-graph.

Definition at line 774 of file adj_midchain.c.

midchain_ip6_nodes

const char* const midchain_ip6_nodes[]

static

Initial value:

=
{
    "ip6-midchain",
    NULL,
}

Definition at line 779 of file adj_midchain.c.

midchain_mpls_nodes

const char* const midchain_mpls_nodes[]

static

Initial value:

=
{
    "mpls-midchain",
    NULL,
}

Definition at line 784 of file adj_midchain.c.

midchain_nodes

const char* const* const midchain_nodes[DPO_PROTO_NUM]

static

Initial value:

=
{
    [DPO_PROTO_IP4]  = midchain_ip4_nodes,
    [DPO_PROTO_IP6]  = midchain_ip6_nodes,
    [DPO_PROTO_MPLS] = midchain_mpls_nodes,
    [DPO_PROTO_ETHERNET] = midchain_ethernet_nodes,
    [DPO_PROTO_NSH] = midchain_nsh_nodes,
}

Definition at line 800 of file adj_midchain.c.

midchain_nsh_nodes

const char* const midchain_nsh_nodes[]

static

Initial value:

=
{
    "adj-nsh-midchain",
    NULL,
}

Definition at line 794 of file adj_midchain.c.