packet_builder/
vlan.rs

1
2
3#[macro_export]
4macro_rules! vlan {
5   ({$($func:ident => $value:expr), *}, $payload_pkt:expr, $protocol:expr, $buf:expr) => {{
6      const VLAN_HEADER_LEN: usize = 4;
7      let total_len = VLAN_HEADER_LEN + $payload_pkt.packet().len();
8      let buf_len = $buf.len();
9      let mut pkt = pnet::packet::vlan::MutableVlanPacket::new(&mut $buf[buf_len - total_len..]).unwrap();
10      pkt.set_ethertype($protocol);       
11      pkt.set_vlan_identifier(0);
12      pkt.set_priority_code_point(pnet::packet::vlan::ClassesOfService::BE);
13      pkt.set_drop_eligible_indicator(0);
14      $(
15        pkt.$func($value);
16      )*
17      (pkt, pnet::packet::ethernet::EtherTypes::Vlan)
18   }};
19}
20
21#[cfg(test)]
22mod tests {
23   use pnet::packet::Packet;
24   use ::payload;
25   use payload::PayloadData;
26
27   #[test]
28   fn macro_vlan_basic() {
29      let mut buf = [0; 4];
30      let (pkt, proto) = vlan!({set_vlan_identifier => 10, set_drop_eligible_indicator => 2},
31                               payload!({[0; 0]}, buf).0, pnet::packet::ethernet::EtherTypes::Ipv4, buf);
32      assert_eq!(proto, pnet::packet::ethernet::EtherTypes::Vlan);
33
34      let buf_expected = vec![0; 4];
35      let mut pkt_expected = pnet::packet::vlan::MutableVlanPacket::owned(buf_expected).unwrap();
36      pkt_expected.set_ethertype(pnet::packet::ethernet::EtherTypes::Ipv4);       
37      pkt_expected.set_vlan_identifier(10);
38      pkt_expected.set_priority_code_point(pnet::packet::vlan::ClassesOfService::BE);
39      pkt_expected.set_drop_eligible_indicator(2);
40      assert_eq!(pkt_expected.packet(), pkt.packet());
41   }
42}
43
packet_builder/vlan.rs

packet_builder/
vlan.rs
