Struct Gre

pub struct Gre {

    pub checksum_present: u1,
    pub routing_present: u1,
    pub key_present: u1,
    pub sequence_present: u1,
    pub strict_source_route: u1,
    pub recursion_control: u3,
    pub zero_flags: u5,
    pub version: u3,
    pub protocol_type: u16be,
    pub checksum: Vec<U16BE>,
    pub offset: Vec<U16BE>,
    pub key: Vec<U32BE>,
    pub sequence: Vec<U32BE>,
    pub routing: Vec<u8>,
    pub payload: Vec<u8>,
}

GRE (Generic Routing Encapsulation) Packet.

See RFCs 1701, 2784, 2890, 7676, 2637

Current status of implementation:

• RFC 1701 except for source routing and checksums. Processing a source routed packet will panic. Checksums are able to be inspected, but not calculated or verified.

• RFC 2784 except for checksums (same as 1701 status). Note that it is possible to generate noncompliant packets by setting any of the reserved bits (but see 2890).

• RFC 2890 implemented.

• RFC 7676 has no packet changes - compliance is up to the user.

• RFC 2637 not implemented.

Note that routing information from RFC 1701 is not implemented, packets with routing_present true will currently cause a panic.

Fields

checksum_present: u1

routing_present: u1

key_present: u1

sequence_present: u1

strict_source_route: u1

recursion_control: u3

zero_flags: u5

version: u3

protocol_type: u16be

checksum: Vec<U16BE>

offset: Vec<U16BE>

key: Vec<U32BE>

sequence: Vec<U32BE>

routing: Vec<u8>

payload: Vec<u8>

Trait Implementations

impl Debug for Gre

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

Formats the value using the given formatter.