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dhcp working!!!!!!!!!

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Arkitu 2025-04-26 17:41:26 +02:00
parent 71502147da
commit 2bfca4ad1d
1 changed files with 32 additions and 28 deletions
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44
src/dhcp.rs
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@ -22,6 +22,7 @@ pub async fn dhcp_server(stack: Stack<'static>) {
let mut buf = [0; 4096];
let mut res_buf = Vec::<u8, 4096>::new();
let mut opts = Vec::<u8, 255>::new();
let mut current_ip = 10_u8; // add one at each new connection, loop at 250, hope not to get on occupied ip
loop {
let mut socket = UdpSocket::new(
stack,
@ -70,7 +71,9 @@ pub async fn dhcp_server(stack: Stack<'static>) {
res_buf.extend_from_slice(&[0; 2]).unwrap(); // secs
res_buf.extend_from_slice(&[0x80, 0x00]).unwrap(); // flags
res_buf.extend_from_slice(&buf[12..16]).unwrap(); // ciaddr
res_buf.extend_from_slice(&[192, 254, 0, 12]).unwrap(); // yiaddr
res_buf
.extend_from_slice(&[192, 254, 0, current_ip])
.unwrap(); // yiaddr
res_buf.extend_from_slice(&[0; 4]).unwrap(); // siaddr
res_buf.extend_from_slice(&buf[24..28]).unwrap(); // giaddr
res_buf.extend_from_slice(&buf[28..44]).unwrap(); // chaddr
@ -88,16 +91,6 @@ pub async fn dhcp_server(stack: Stack<'static>) {
])
.unwrap(); // opt message type
unwrap(
write_dhcp_opts(
&mut res_buf,
match (msg_type, rapid_commit) {
(DhcpMsgType::DISCOVER, false) => {
unwrap(v4_options!(msg; ParameterRequestList))
.await
.unwrap_or(&[])
}
(DhcpMsgType::DISCOVER, true) => {
opts.clear();
opts.extend_from_slice(
unwrap(v4_options!(msg; ParameterRequestList))
@ -105,16 +98,20 @@ pub async fn dhcp_server(stack: Stack<'static>) {
.unwrap_or(&[]),
)
.unwrap();
opts.push(80).unwrap();
&opts
}
let default_opts: &[u8] = match (msg_type, rapid_commit) {
(DhcpMsgType::DISCOVER, false) => &[54],
(DhcpMsgType::DISCOVER, true) => &[54, 80],
(DhcpMsgType::REQUEST, false) => &[1, 3, 51, 6, 54],
_ => unreachable!(),
},
)
.await,
)
.await;
};
for o in default_opts {
if !opts.contains(o) {
opts.push(*o).unwrap();
}
}
unwrap(write_dhcp_opts(&mut res_buf, &opts).await).await;
res_buf.push(255).unwrap(); // end option
for o in unwrap(unwrap(dhcpv4::Message::new(&res_buf)).await.options()).await {
@ -144,8 +141,15 @@ pub async fn dhcp_server(stack: Stack<'static>) {
.await,
)
.await;
info!("offer/ack sent");
info!("offer/ack sent for ip {}", current_ip);
Timer::after_secs(0).await;
if msg_type == DhcpMsgType::REQUEST || rapid_commit {
current_ip += 1;
if current_ip > 250 {
current_ip = 10;
}
}
}
_ => {}
}