Struct smoltcp::wire::Ipv4Packet
source · Expand description
A read/write wrapper around an Internet Protocol version 4 packet buffer.
Implementations§
source§impl<T: AsRef<[u8]>> Packet<T>
impl<T: AsRef<[u8]>> Packet<T>
sourcepub fn new_unchecked(buffer: T) -> Packet<T>
pub fn new_unchecked(buffer: T) -> Packet<T>
Imbue a raw octet buffer with IPv4 packet structure.
sourcepub fn new_checked(buffer: T) -> Result<Packet<T>>
pub fn new_checked(buffer: T) -> Result<Packet<T>>
Shorthand for a combination of new_unchecked and check_len.
sourcepub fn check_len(&self) -> Result<()>
pub fn check_len(&self) -> Result<()>
Ensure that no accessor method will panic if called.
Returns Err(Error::Truncated)
if the buffer is too short.
Returns Err(Error::Malformed)
if the header length is greater
than total length.
The result of this check is invalidated by calling set_header_len and set_total_len.
sourcepub fn into_inner(self) -> T
pub fn into_inner(self) -> T
Consume the packet, returning the underlying buffer.
sourcepub fn header_len(&self) -> u8
pub fn header_len(&self) -> u8
Return the header length, in octets.
sourcepub fn more_frags(&self) -> bool
pub fn more_frags(&self) -> bool
Return the “more fragments” flag.
sourcepub fn frag_offset(&self) -> u16
pub fn frag_offset(&self) -> u16
Return the fragment offset, in octets.
sourcepub fn verify_checksum(&self) -> bool
pub fn verify_checksum(&self) -> bool
source§impl<T: AsRef<[u8]> + AsMut<[u8]>> Packet<T>
impl<T: AsRef<[u8]> + AsMut<[u8]>> Packet<T>
sourcepub fn set_version(&mut self, value: u8)
pub fn set_version(&mut self, value: u8)
Set the version field.
sourcepub fn set_header_len(&mut self, value: u8)
pub fn set_header_len(&mut self, value: u8)
Set the header length, in octets.
sourcepub fn set_total_len(&mut self, value: u16)
pub fn set_total_len(&mut self, value: u16)
Set the total length field.
sourcepub fn clear_flags(&mut self)
pub fn clear_flags(&mut self)
Clear the entire flags field.
sourcepub fn set_dont_frag(&mut self, value: bool)
pub fn set_dont_frag(&mut self, value: bool)
Set the “don’t fragment” flag.
sourcepub fn set_more_frags(&mut self, value: bool)
pub fn set_more_frags(&mut self, value: bool)
Set the “more fragments” flag.
sourcepub fn set_frag_offset(&mut self, value: u16)
pub fn set_frag_offset(&mut self, value: u16)
Set the fragment offset, in octets.
sourcepub fn set_hop_limit(&mut self, value: u8)
pub fn set_hop_limit(&mut self, value: u8)
Set the time to live field.
sourcepub fn set_protocol(&mut self, value: Protocol)
pub fn set_protocol(&mut self, value: Protocol)
Set the protocol field.
sourcepub fn set_checksum(&mut self, value: u16)
pub fn set_checksum(&mut self, value: u16)
Set the header checksum field.
sourcepub fn set_src_addr(&mut self, value: Address)
pub fn set_src_addr(&mut self, value: Address)
Set the source address field.
sourcepub fn set_dst_addr(&mut self, value: Address)
pub fn set_dst_addr(&mut self, value: Address)
Set the destination address field.
sourcepub fn fill_checksum(&mut self)
pub fn fill_checksum(&mut self)
Compute and fill in the header checksum.
sourcepub fn payload_mut(&mut self) -> &mut [u8] ⓘ
pub fn payload_mut(&mut self) -> &mut [u8] ⓘ
Return a mutable pointer to the payload.