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

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_ip_adjacency (u8 s, va_list args)
	Pretty print helper function for formatting specific adjacencies. More...

static void	adj_last_lock_gone (ip_adjacency_t *adj)

void	adj_lock (adj_index_t adj_index)
	An adjacency is a representation of an attached L3 peer. 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...

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...

const u8 *	adj_get_rewrite (adj_index_t ai)
	Return the link type 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)

ip_adjacency_t *	ip_add_adjacency (ip_lookup_main_t lm, ip_adjacency_t copy_adj, u32 n_adj, u32 *adj_index_return)

Variables
static ip_adjacency_t *	special_v4_miss_adj_with_index_zero

vlib_combined_counter_main_t	adjacency_counters
	Adjacency packet counters. More...

ip_adjacency_t *	adj_pool
	The global adjacnecy pool. 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...

Macro Definition Documentation

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

Definition at line 311 of file adj.c.

Function Documentation

ip_adjacency_t* adj_alloc ( fib_protocol_t proto )

Definition at line 47 of file adj.c.

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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 321 of file adj.c.

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 228 of file adj.c.

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void adj_child_remove	(	adj_index_t	adj_index,
		u32	sibling_index
	)

Remove a child dependent.

Definition at line 245 of file adj.c.

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vnet_link_t adj_get_link_type ( adj_index_t ai )

Return the link type of the adjacency.

Definition at line 262 of file adj.c.

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static fib_node_t* adj_get_node ( fib_node_index_t index )

static

Definition at line 302 of file adj.c.

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const u8* adj_get_rewrite ( adj_index_t ai )

Return the link type of the adjacency.

Definition at line 288 of file adj.c.

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u32 adj_get_sw_if_index ( adj_index_t ai )

Return the sw interface index of the adjacency.

Definition at line 275 of file adj.c.

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static int adj_index_is_special ( adj_index_t adj_index )

static

Definition at line 78 of file adj.c.

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static void adj_last_lock_gone ( ip_adjacency_t * adj )

static

Definition at line 149 of file adj.c.

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void adj_lock ( adj_index_t adj_index )

An adjacency is a representation of an attached L3 peer.

Adjacency Sub-types:

neighbour: a representation of an attached L3 peer. Key:{addr,interface,link/ether-type} SHARED
glean: used to drive ARP/ND for packets destined to a local sub-net. 'glean' mean use the packet's destination address as the target address in the ARP packet. UNSHARED. Only one per-interface.
midchain: a nighbour adj on a virtual/tunnel interface.
rewrite: an adj with no key, but with a rewrite string.

The API to create and update the adjacency is very sub-type specific. This is intentional as it encourages the user to carefully consider which adjacency sub-type they are really using, and hence assign it data in the appropriate sub-type space in the union of sub-types. This prevents the adj becoming a disorganised dumping group for 'my features needs a u16 somewhere' data. It is important to enforce this approach as space in the adjacency is a premium, as we need it to fit in 1 cache line.

the API is also based around an index to an ajdacency not a raw pointer. This is so the user doesn't suffer the same limp inducing firearm injuries that the author suffered as the adjacenices can realloc.

Take a reference counting lock on the adjacency

Definition at line 192 of file adj.c.

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static clib_error_t* adj_module_init ( vlib_main_t * vm )

static

Definition at line 342 of file adj.c.

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static void adj_node_last_lock_gone ( fib_node_t * node )

static

Definition at line 315 of file adj.c.

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static void adj_poison ( ip_adjacency_t * adj )

inlinestatic

Definition at line 38 of file adj.c.

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

static

Definition at line 361 of file adj.c.

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void adj_unlock ( adj_index_t adj_index )

Release a reference counting lock on the adjacency.

Definition at line 209 of file adj.c.

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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 95 of file adj.c.

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ip_adjacency_t* ip_add_adjacency	(	ip_lookup_main_t *	lm,
		ip_adjacency_t *	copy_adj,
		u32	n_adj,
		u32 *	adj_index_return
	)

Definition at line 438 of file adj.c.

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Variable Documentation

ip_adjacency_t* adj_pool

The global adjacnecy pool.

Exposed for fast/inline data-plane access

Definition at line 35 of file adj.c.

vlib_cli_command_t adj_show_command

static

Initial value:

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

(constructor) VLIB_CLI_COMMAND (adj_show_command)

Definition at line 428 of file adj.c.

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 335 of file adj.c.

vlib_combined_counter_main_t adjacency_counters

Adjacency packet counters.

Definition at line 30 of file adj.c.

ip_adjacency_t* special_v4_miss_adj_with_index_zero

static

Definition at line 27 of file adj.c.

Macros

Functions

Variables

Macro Definition Documentation

Function Documentation

Variable Documentation