Struct riot_sys::ipv6_hdr_t

#[repr(C, packed(1))]
pub struct ipv6_hdr_t {
    pub v_tc_fl: network_uint32_t,
    pub len: network_uint16_t,
    pub nh: u8,
    pub hl: u8,
    pub src: ipv6_addr_t,
    pub dst: ipv6_addr_t,
}

@brief Data type to represent an IPv6 packet header

@details The structure of the header is as follows:

                     1                   2                   3
 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1 2 3 4 5 6 7 8 9 0 1
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|Version| Traffic Class |           Flow Label                  |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|         Payload Length        |  Next Header  |   Hop Limit   |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                                                               |
+                                                               +
|                                                               |
+                         Source Address                        +
|                                                               |
+                                                               +
|                                                               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+
|                                                               |
+                                                               +
|                                                               |
+                      Destination Address                      +
|                                                               |
+                                                               +
|                                                               |
+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+-+

@see RFC 8200, section 3

Fields

v_tc_fl: network_uint32_t

@brief Version, traffic class, and flow label

@details The version are the 4 most significant bits, the traffic class the 8 next bit, and the remainding 20 bits are the flow label (see above).

This module provides helper functions to set, get, and check these fields accordingly:

• ipv6_hdr_set_version()
• ipv6_hdr_get_version()
• ipv6_hdr_is()
• ipv6_hdr_set_tc()
• ipv6_hdr_set_tc_ecn()
• ipv6_hdr_set_tc_dscp()
• ipv6_hdr_get_tc()
• ipv6_hdr_get_tc_ecn()
• ipv6_hdr_get_tc_dscp()
• ipv6_hdr_set_fl()
• ipv6_hdr_get_fl()

len: network_uint16_t

< payload length of this packet.

nh: u8

< type of next header in this packet.

hl: u8

< hop limit for this packet.

src: ipv6_addr_t

< source address of this packet.

dst: ipv6_addr_t

< destination address of this packet.

Trait Implementations

impl Clone for ipv6_hdr_t

fn clone(&self) -> ipv6_hdr_t

Returns a copy of the value.

fn clone_from(&mut self, source: &Self)

Performs copy-assignment from source.

impl Debug for ipv6_hdr_t

fn fmt(&self, f: &mut Formatter<'_>) -> Result

Formats the value using the given formatter.

impl Default for ipv6_hdr_t

fn default() -> Self

Returns the “default value” for a type.

impl Copy for ipv6_hdr_t

Layout

Note: Most layout information is completely unstable and may even differ between compilations. The only exception is types with certain repr(...) attributes. Please see the Rust Reference's “Type Layout” chapter for details on type layout guarantees.

Size: 40 bytes