A representation of a GRE tunnel. More...

Collaboration diagram for gre_tunnel_t:

Public Member Functions
	CLIB_CACHE_LINE_ALIGN_MARK (cacheline0)
	Required for pool_get_aligned. More...

Data Fields
ip46_address_t	tunnel_src
	The tunnel's source/local address. More...

fib_prefix_t	tunnel_dst
	The tunnel's destination/remote address. More...

u32	outer_fib_index
	The FIB in which the src.dst address are present. More...

u32	hw_if_index

u32	sw_if_index

gre_tunnel_type_t	type

gre_tunnel_mode_t	mode

adj_index_t	l2_adj_index
	an L2 tunnel always rquires an L2 midchain. More...

u16	session_id
	ERSPAN type 2 session ID, least significant 10 bits of u16. More...

gre_sn_t *	gre_sn
	GRE header sequence number (SN) used for ERSPAN type 2 header, must be bumped automically to be thread safe. More...

u32	dev_instance

u32	user_instance

Detailed Description

A representation of a GRE tunnel.

Definition at line 196 of file gre.h.

Member Function Documentation

◆ CLIB_CACHE_LINE_ALIGN_MARK()

gre_tunnel_t::CLIB_CACHE_LINE_ALIGN_MARK ( cacheline0 )

Required for pool_get_aligned.

Field Documentation

◆ dev_instance

u32 gre_tunnel_t::dev_instance

Definition at line 239 of file gre.h.

◆ gre_sn

gre_sn_t* gre_tunnel_t::gre_sn

GRE header sequence number (SN) used for ERSPAN type 2 header, must be bumped automically to be thread safe.

As multiple GRE tunnels are created for the same fib-idx/DIP/SIP with different ERSPAN session number, they all share the same SN which is kept per FIB/DIP/SIP, as specified by RFC2890.

Definition at line 236 of file gre.h.

◆ hw_if_index

u32 gre_tunnel_t::hw_if_index

Definition at line 215 of file gre.h.

◆ l2_adj_index

adj_index_t gre_tunnel_t::l2_adj_index

an L2 tunnel always rquires an L2 midchain.

cache here for DP.

Definition at line 223 of file gre.h.

◆ mode

gre_tunnel_mode_t gre_tunnel_t::mode

Definition at line 218 of file gre.h.

◆ outer_fib_index

u32 gre_tunnel_t::outer_fib_index

The FIB in which the src.dst address are present.

Definition at line 214 of file gre.h.

◆ session_id

u16 gre_tunnel_t::session_id

ERSPAN type 2 session ID, least significant 10 bits of u16.

Definition at line 228 of file gre.h.

◆ sw_if_index

u32 gre_tunnel_t::sw_if_index

Definition at line 216 of file gre.h.

◆ tunnel_dst

fib_prefix_t gre_tunnel_t::tunnel_dst

The tunnel's destination/remote address.

Definition at line 210 of file gre.h.

◆ tunnel_src

ip46_address_t gre_tunnel_t::tunnel_src

The tunnel's source/local address.

Definition at line 206 of file gre.h.

◆ type

gre_tunnel_type_t gre_tunnel_t::type

Definition at line 217 of file gre.h.

◆ user_instance

u32 gre_tunnel_t::user_instance

Definition at line 240 of file gre.h.

The documentation for this struct was generated from the following file:

src/vnet/gre/gre.h

Public Member Functions

Data Fields