Struct nfq::Message

pub struct Message { /* fields omitted */ }

A network packet with associated metadata.

Methods

impl Message

pub fn get_nfmark(&self) -> u32

Get the nfmark (fwmark) of the packet.

pub fn set_nfmark(&mut self, mark: u32)

Set the associated nfmark (fwmark) of the packet.

pub fn get_indev(&self) -> u32

Get the interface index of the interface the packet arrived on. If the packet is locally generated, or the input interface is no longer known (e.g. POSTROUTING chain), 0 is returned.

pub fn get_physindev(&self) -> u32

Get the interface index of the bridge port the packet arrived on. If the packet is locally generated, or the input interface is no longer known (e.g. POSTROUTING chain), 0 is returned.

pub fn get_outdev(&self) -> u32

Get the interface index of the interface the packet is to be transmitted from. If the packet is locally destinated, or the output interface is unknown (e.g. PREROUTING chain), 0 is returned.

pub fn get_physoutdev(&self) -> u32

Get the interface index of the bridge port the packet is to be transmitted from. If the packet is locally destinated, or the output interface is unknown (e.g. PREROUTING chain), 0 is returned.

pub fn get_original_len(&self) -> usize

Get the original length of the packet.

pub fn is_seg_offloaded(&self) -> bool

Check if the packet is GSO-offloaded.

pub fn is_checksum_ready(&self) -> bool

Check if the checksums are ready, e.g. due to offload.

pub fn get_security_context(&self) -> Option<&str>

Get the security context string of the local process sending the packet. If not applicable, None is returned.

pub fn get_uid(&self) -> Option<u32>

Get the UID of the local process sending the packet. If not applicable, None is returned.

pub fn get_gid(&self) -> Option<u32>

Get the GID of the local process sending the packet. If not applicable, None is returned.

pub fn get_timestamp(&self) -> Option<SystemTime>

Get the timestamp of the packet.

pub fn get_hw_addr(&self) -> Option<&[u8]>

Get the hardware address associated with the packet. For Ethernet packets, the hardware address returned will be the MAC address of the packet source host, if any.

pub fn get_hw_protocol(&self) -> u16

Get the link layer protocol number, e.g. the EtherType field on Ethernet links.

pub fn get_hook(&self) -> u8

Get the netfilter hook number that handles this packet.

pub fn get_payload(&self) -> &[u8]

Get the content of the payload.

pub fn get_payload_mut(&mut self) -> &mut [u8]

Get the content of the payload in mutable state. If the final verdict is not Verdict::Drop, the change be committed to the kernel.

Note: Once the method is called, the payload will be written back regardles whether the underlying storage is actually modified, therefore it is not optimal performance-wise.

pub fn set_payload(&mut self, payload: impl Into<Vec<u8>>)

Set the content of the payload. If the final verdict is not Verdict::Drop, the updated payload will be committed to the kernel.

pub fn get_verdict(&self) -> Verdict

Get the current verdict.

pub fn set_verdict(&mut self, verdict: Verdict)

Set the current verdict.

Trait Implementations

impl Send for Message