tuntap_main_t Struct Reference

TUNTAP node main state. More...

Collaboration diagram for tuntap_main_t:

Data Fields
struct iovec *	iovecs
	Vector of iovecs for readv/writev calls. More...
u32 *	rx_buffers
	Vector of VLIB rx buffers to use. More...
int	dev_net_tun_fd
	File descriptors for /dev/net/tun and provisioning socket. More...
int	dev_tap_fd
int	is_ether
	Create a "tap" [ethernet] encaps device. More...
int	have_normal_interface
	1 if a "normal" routed intfc, 0 if a punt/inject interface More...
u8	ether_dst_mac [6]
	tap device destination MAC address. More...
u32	mtu_bytes
	Interface MTU in bytes and # of default sized buffers. More...
u32	mtu_buffers
char *	tun_name
	Linux interface name for tun device. More...
subif_address_t *	subifs
	Pool of subinterface addresses. More...
mhash_t	subif_mhash
	Hash for subif addresses. More...
u32	unix_file_index
	Unix file index. More...
u32	hw_if_index
	For the "normal" interface, if configured. More...
u32	sw_if_index

Detailed Description

TUNTAP node main state.

Definition at line 74 of file tuntap.c.

Field Documentation

int tuntap_main_t::dev_net_tun_fd

File descriptors for /dev/net/tun and provisioning socket.

Definition at line 83 of file tuntap.c.

int tuntap_main_t::dev_tap_fd

Definition at line 83 of file tuntap.c.

u8 tuntap_main_t::ether_dst_mac[6]

tap device destination MAC address.

Required, or Linux drops pkts

Definition at line 93 of file tuntap.c.

int tuntap_main_t::have_normal_interface

1 if a "normal" routed intfc, 0 if a punt/inject interface

Definition at line 90 of file tuntap.c.

u32 tuntap_main_t::hw_if_index

For the "normal" interface, if configured.

Definition at line 111 of file tuntap.c.

struct iovec* tuntap_main_t::iovecs

Vector of iovecs for readv/writev calls.

Definition at line 76 of file tuntap.c.

int tuntap_main_t::is_ether

Create a "tap" [ethernet] encaps device.

Definition at line 86 of file tuntap.c.

u32 tuntap_main_t::mtu_buffers

Definition at line 96 of file tuntap.c.

u32 tuntap_main_t::mtu_bytes

Interface MTU in bytes and # of default sized buffers.

Definition at line 96 of file tuntap.c.

u32* tuntap_main_t::rx_buffers

Vector of VLIB rx buffers to use.

We allocate them in blocks of VLIB_FRAME_SIZE (256).

Definition at line 80 of file tuntap.c.

mhash_t tuntap_main_t::subif_mhash

Hash for subif addresses.

Definition at line 105 of file tuntap.c.

subif_address_t* tuntap_main_t::subifs

Pool of subinterface addresses.

Definition at line 102 of file tuntap.c.

u32 tuntap_main_t::sw_if_index

Definition at line 111 of file tuntap.c.

char* tuntap_main_t::tun_name

Linux interface name for tun device.

Definition at line 99 of file tuntap.c.

u32 tuntap_main_t::unix_file_index

Unix file index.

Definition at line 108 of file tuntap.c.

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

• vnet/vnet/unix/tuntap.c