adj.c File Reference

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Data Structures
struct	adj_feature_update_t_

Macros
#define	ADJ_FROM_NODE(_node)   ((ip_adjacency_t*)((char*)_node - STRUCT_OFFSET_OF(ip_adjacency_t, ia_node)))

Typedefs
typedef struct adj_feature_update_t_	adj_feature_update_ctx_t

Functions
static void	adj_poison (ip_adjacency_t *adj)
ip_adjacency_t *	adj_alloc (fib_protocol_t proto)
static int	adj_index_is_special (adj_index_t adj_index)
u8 *	format_adj_flags (u8 *s, va_list *args)
	Format adjacency flags. More...
u8 *	format_ip_adjacency (u8 *s, va_list *args)
	Pretty print helper function for formatting specific adjacencies. More...
int	adj_recursive_loop_detect (adj_index_t ai, fib_node_index_t **entry_indicies)
	descend the FIB graph looking for loops More...
static void	adj_last_lock_gone (ip_adjacency_t *adj)
u32	adj_dpo_get_urpf (const dpo_id_t *dpo)
void	adj_lock (adj_index_t adj_index)
	Take a reference counting lock on the adjacency. More...
void	adj_unlock (adj_index_t adj_index)
	Release a reference counting lock on the adjacency. More...
u32	adj_child_add (adj_index_t adj_index, fib_node_type_t child_type, fib_node_index_t child_index)
	Add a child dependent to an adjacency. More...
void	adj_child_remove (adj_index_t adj_index, u32 sibling_index)
	Remove a child dependent. More...
static adj_walk_rc_t	adj_feature_update_walk_cb (adj_index_t ai, void *arg)
void	adj_feature_update (u32 sw_if_index, u8 arc_index, u8 is_enable)
	Notify the adjacency subsystem that the features settings for an interface have changed. More...
static adj_walk_rc_t	adj_mtu_update_walk_cb (adj_index_t ai, void *arg)
static clib_error_t *	adj_mtu_update (vnet_main_t *vnm, u32 sw_if_index, u32 flags)
	VNET_SW_INTERFACE_MTU_CHANGE_FUNCTION (adj_mtu_update)
void	adj_walk (u32 sw_if_index, adj_walk_cb_t cb, void *ctx)
	Walk the Adjacencies on a given interface. More...
vnet_link_t	adj_get_link_type (adj_index_t ai)
	Return the link type of the adjacency. More...
u32	adj_get_sw_if_index (adj_index_t ai)
	Return the sw interface index of the adjacency. More...
int	adj_is_up (adj_index_t ai)
	Return true if the adjacency is 'UP', i.e. More...
const u8 *	adj_get_rewrite (adj_index_t ai)
	Return the rewrite string of the adjacency. More...
static fib_node_t *	adj_get_node (fib_node_index_t index)
static void	adj_node_last_lock_gone (fib_node_t *node)
static fib_node_back_walk_rc_t	adj_back_walk_notify (fib_node_t *node, fib_node_back_walk_ctx_t *ctx)
static clib_error_t *	adj_module_init (vlib_main_t *vm)
static clib_error_t *	adj_show (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
static clib_error_t *	adj_cli_counters_set (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
	CLI invoked function to enable/disable per-adj counters. More...

Variables
vlib_combined_counter_main_t	adjacency_counters
	Adjacency packet counters. More...
ip_adjacency_t *	adj_pool
	The global adjacnecy pool. More...
int	adj_per_adj_counters
	Global Config for enabling per-adjacency counters. More...
const ip46_address_t	ADJ_BCAST_ADDR
	The special broadcast address (to construct a broadcast adjacency. More...
static const char *	adj_attr_names [] = ADJ_ATTR_NAMES
	Adj flag names. More...
static const fib_node_vft_t	adj_vft
static vlib_cli_command_t	adj_show_command
	(constructor) VLIB_CLI_COMMAND (adj_show_command) More...
static vlib_cli_command_t	adj_cli_counters_set_command
	(constructor) VLIB_CLI_COMMAND (adj_cli_counters_set_command) More...

Macro Definition Documentation

ADJ_FROM_NODE

#define ADJ_FROM_NODE

(

_node

)

((ip_adjacency_t*)((char*)_node - STRUCT_OFFSET_OF(ip_adjacency_t, ia_node)))

Definition at line 527 of file adj.c.

Typedef Documentation

adj_feature_update_ctx_t

typedef struct adj_feature_update_t_ adj_feature_update_ctx_t

Function Documentation

adj_alloc()

ip_adjacency_t* adj_alloc

(

fib_protocol_t

proto

)

Definition at line 63 of file adj.c.

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adj_back_walk_notify()

static fib_node_back_walk_rc_t adj_back_walk_notify ( fib_node_t *  node, fib_node_back_walk_ctx_t *  ctx  )

static

Definition at line 537 of file adj.c.

adj_child_add()

u32 adj_child_add	(	adj_index_t	adj_index,
		fib_node_type_t	type,
		fib_node_index_t	child_index
	)

Add a child dependent to an adjacency.

The child will thus be informed via its registerd back-walk function when the adjacency state changes.

Definition at line 337 of file adj.c.

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adj_child_remove()

void adj_child_remove	(	adj_index_t	adj_index,
		u32	sibling_index
	)

Remove a child dependent.

Definition at line 354 of file adj.c.

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adj_cli_counters_set()

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

static

CLI invoked function to enable/disable per-adj counters.

Definition at line 665 of file adj.c.

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adj_dpo_get_urpf()

u32 adj_dpo_get_urpf

(

const dpo_id_t *

dpo

)

Definition at line 291 of file adj.c.

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adj_feature_update()

void adj_feature_update	(	u32	sw_if_index,
		u8	arc_index,
		u8	is_enable
	)

Notify the adjacency subsystem that the features settings for an interface have changed.

Definition at line 405 of file adj.c.

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adj_feature_update_walk_cb()

static adj_walk_rc_t adj_feature_update_walk_cb ( adj_index_t  ai, void *  arg  )

static

Definition at line 377 of file adj.c.

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adj_get_link_type()

vnet_link_t adj_get_link_type

(

adj_index_t

ai

)

Return the link type of the adjacency.

Definition at line 468 of file adj.c.

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adj_get_node()

static fib_node_t* adj_get_node ( fib_node_index_t  index )

static

Definition at line 518 of file adj.c.

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adj_get_rewrite()

const u8* adj_get_rewrite

(

adj_index_t

ai

)

Return the rewrite string of the adjacency.

Return the link type of the adjacency.

Definition at line 504 of file adj.c.

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adj_get_sw_if_index()

u32 adj_get_sw_if_index

(

adj_index_t

ai

)

Return the sw interface index of the adjacency.

Definition at line 481 of file adj.c.

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adj_index_is_special()

static int adj_index_is_special ( adj_index_t  adj_index )

static

Definition at line 95 of file adj.c.

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adj_is_up()

int adj_is_up

(

adj_index_t

ai

)

Return true if the adjacency is 'UP', i.e.

can be used for forwarding 0 is down, !0 is up.

Definition at line 495 of file adj.c.

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adj_last_lock_gone()

static void adj_last_lock_gone ( ip_adjacency_t *  adj )

static

Definition at line 234 of file adj.c.

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adj_lock()

void adj_lock

(

adj_index_t

adj_index

)

Take a reference counting lock on the adjacency.

Definition at line 301 of file adj.c.

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adj_module_init()

static clib_error_t* adj_module_init ( vlib_main_t *  vm )

static

Definition at line 558 of file adj.c.

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adj_mtu_update()

static clib_error_t* adj_mtu_update ( vnet_main_t *  vnm, u32  sw_if_index, u32  flags  )

static

Definition at line 435 of file adj.c.

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adj_mtu_update_walk_cb()

static adj_walk_rc_t adj_mtu_update_walk_cb ( adj_index_t  ai, void *  arg  )

static

Definition at line 421 of file adj.c.

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adj_node_last_lock_gone()

static void adj_node_last_lock_gone ( fib_node_t *  node )

static

Definition at line 531 of file adj.c.

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adj_poison()

static void adj_poison ( ip_adjacency_t *  adj )

inlinestatic

Definition at line 54 of file adj.c.

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adj_recursive_loop_detect()

int adj_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 196 of file adj.c.

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adj_show()

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

static

Definition at line 573 of file adj.c.

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adj_unlock()

void adj_unlock

(

adj_index_t

adj_index

)

Release a reference counting lock on the adjacency.

Definition at line 318 of file adj.c.

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adj_walk()

void adj_walk	(	u32	sw_if_index,
		adj_walk_cb_t	cb,
		void *	ctx
	)

Walk the Adjacencies on a given interface.

Definition at line 448 of file adj.c.

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format_adj_flags()

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

Format adjacency flags.

Definition at line 104 of file adj.c.

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format_ip_adjacency()

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

Pretty print helper function for formatting specific adjacencies.

Parameters

s	- input string to format
args	- other args passed to format function such as: vnet_main_t ip_lookup_main_t adj_index

Definition at line 134 of file adj.c.

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VNET_SW_INTERFACE_MTU_CHANGE_FUNCTION()

VNET_SW_INTERFACE_MTU_CHANGE_FUNCTION

(

adj_mtu_update

)

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Variable Documentation

adj_attr_names

const char* adj_attr_names[] = ADJ_ATTR_NAMES

static

Adj flag names.

Definition at line 51 of file adj.c.

ADJ_BCAST_ADDR

const ip46_address_t ADJ_BCAST_ADDR

Initial value:

= {
    .ip6 = {
        .as_u64[0] = 0xffffffffffffffff,
        .as_u64[1] = 0xffffffffffffffff,
    },
}

The special broadcast address (to construct a broadcast adjacency.

Definition at line 41 of file adj.c.

adj_cli_counters_set_command

vlib_cli_command_t adj_cli_counters_set_command

static

Initial value:

= {
    .path = "adjacency counters",
    .short_help = "adjacency counters [enable|disable]",
    .function = adj_cli_counters_set,
}

(constructor) VLIB_CLI_COMMAND (adj_cli_counters_set_command)

Definition at line 699 of file adj.c.

adj_per_adj_counters

int adj_per_adj_counters

Global Config for enabling per-adjacency counters.

Global Config for enabling per-adjacency counters This is configurable because it comes with a non-negligible performance cost.

By default these are disabled.

Definition at line 39 of file adj.c.

adj_pool

ip_adjacency_t* adj_pool

The global adjacnecy pool.

Exposed for fast/inline data-plane access

Definition at line 33 of file adj.c.

adj_show_command

vlib_cli_command_t adj_show_command

static

Initial value:

= {
    .path = "show adj",
    .short_help = "show adj [<adj_index>] [interface] [summary]",
    .function = adj_show,
}

(constructor) VLIB_CLI_COMMAND (adj_show_command)

Definition at line 655 of file adj.c.

adj_vft

const fib_node_vft_t adj_vft

static

Initial value:

= {
    .fnv_get = adj_get_node,
    .fnv_last_lock = adj_node_last_lock_gone,
    .fnv_back_walk = adj_back_walk_notify,
}

Definition at line 551 of file adj.c.

adjacency_counters

vlib_combined_counter_main_t adjacency_counters

Initial value:

= {
    .name = "adjacency",
    .stat_segment_name = "/net/adjacency",
}

Adjacency packet counters.

Definition at line 25 of file adj.c.