Struct Message 

pub struct Message {
    pub hdr: *mut Header,
    pub data: *mut u8,
    pub len: usize,
}

Represents a netlink message container

This structure provides a view of a netlink message, containing both the header pointer and the data buffer.

Fields

hdr: *mut Header

Pointer to the netlink message header

data: *mut u8

Pointer to the message data buffer

len: usize

Length of the message in bytes

Implementations

impl Message

pub const REQUEST: u32 = 1

Flag for request messages

pub const MULTI: u32 = 2

Flag for multipart messages (terminated by NLMSG_DONE)

pub const ACK: u32 = 4

Flag for reply with acknowledgment

pub const ECHO: u32 = 8

Flag to request echo of the message

pub const DUMP_INTR: u32 = 16

Flag indicating dump was interrupted due to sequence change

pub const ROOT: u32 = 0x100

Specifies tree root for GET requests

pub const MATCH: u32 = 0x200

Returns all matching items for GET requests

pub const ATOMIC: u32 = 0x400

Requests atomic GET operation

pub const DUMP: u32

Combination of ROOT and MATCH flags for dump operations

pub const REPLACE: u32 = 0x100

Override existing object if it exists

pub const EXCLUDE: u32 = 0x200

Don’t touch object if it already exists

pub const CREATE: u32 = 0x400

Create object if it doesn’t exist

pub const APPEND: u32 = 0x800

Add to end of list

pub const ALIGNTO: u32 = 4

Alignment boundary for netlink messages

pub const NOOP: u16 = 0x1

No operation message

pub const ERROR: u16 = 0x2

Error message

pub const DONE: u16 = 0x3

End of dump marker

pub const OVERRUN: u16 = 0x4

Data overflow indicator

pub const MIN_TYPE: u16 = 0x10

Minimum user-defined message type

pub const HDRLEN: usize

Size of the netlink message header, aligned

pub const fn len(len: usize) -> usize

Calculates the total message length including header

Parameters

• len - Length of the payload

Returns

Total message length including header

pub fn space(&self) -> usize

Calculates the aligned space needed for this message

Returns

The aligned message size

pub fn data(nlh: *const Header) -> *mut u8

Gets a pointer to the message data (payload)

Parameters

• nlh - Pointer to the netlink header

Returns

Pointer to the message payload

pub fn next(&mut self) -> *const Header

Gets the next message in a sequence

Updates internal pointers and counters.

Returns

Pointer to the next message header

pub fn is_ok(&self) -> bool

Checks if the message structure is valid

Verifies that the message header and length are consistent with the buffer size.

Returns

true if the message is valid, false otherwise

pub fn payload(&self) -> u32

Gets the payload length of the message

Returns

Length of the message payload in bytes

Trait Implementations

impl Clone for Message

fn clone(&self) -> Message

Returns a duplicate of the value.

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

Performs copy-assignment from source.

impl Copy for Message

impl Debug for Message

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

Formats the value using the given formatter.

impl Eq for Message

impl Hash for Message

fn hash<__H: Hasher>(&self, state: &mut __H)

Feeds this value into the given Hasher.

fn hash_slice<H>(data: &[Self], state: &mut H)

where H: Hasher, Self: Sized,

Feeds a slice of this type into the given Hasher.

impl Ord for Message

fn cmp(&self, other: &Message) -> Ordering

This method returns an Ordering between self and other.

fn max(self, other: Self) -> Self

where Self: Sized,

Compares and returns the maximum of two values.

fn min(self, other: Self) -> Self

where Self: Sized,

Compares and returns the minimum of two values.

fn clamp(self, min: Self, max: Self) -> Self

where Self: Sized,

Restrict a value to a certain interval.

impl PartialEq for Message

fn eq(&self, other: &Message) -> bool

Tests for self and other values to be equal, and is used by ==.

fn ne(&self, other: &Rhs) -> bool

Tests for !=. The default implementation is almost always sufficient, and should not be overridden without very good reason.

impl PartialOrd for Message

fn partial_cmp(&self, other: &Message) -> Option<Ordering>

This method returns an ordering between self and other values if one exists.

fn lt(&self, other: &Rhs) -> bool

Tests less than (for self and other) and is used by the < operator.

fn le(&self, other: &Rhs) -> bool

Tests less than or equal to (for self and other) and is used by the <= operator.

fn gt(&self, other: &Rhs) -> bool

Tests greater than (for self and other) and is used by the > operator.

fn ge(&self, other: &Rhs) -> bool

Tests greater than or equal to (for self and other) and is used by the >= operator.

impl StructuralPartialEq for Message