punchnet/sdlan-lib-rs
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construct the arp response while SdlArpResponse arrived

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alex 2026-03-07 15:42:35 +08:00
parent 46170feb5b
commit 651b9ba5cd
1 changed files with 25 additions and 1 deletions
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26
src/tcp/quic.rs
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@ -9,7 +9,7 @@ use tokio::{sync::mpsc::{Receiver, Sender, channel}};
use tokio_util::sync::CancellationToken;
use tracing::{debug, error};
use crate::{ConnectionInfo, ConnectionState, config::{NULL_MAC, TCP_PING_TIME}, get_edge, network::{Node, RegisterSuperFeedback, StartStopInfo, check_peer_registration_needed, handle_packet_peer_info}, pb::{SdlArpResponse, SdlPolicyResponse, SdlRegisterSuper, SdlRegisterSuperAck, SdlRegisterSuperNak, SdlSendRegisterEvent, encode_to_tcp_message}, tcp::{EventType, NakMsgCode, NatType, PacketType, RuleInfo, SdlanTcp, read_a_packet, send_stun_request, set_identity_cache}};
use crate::{ConnectionInfo, ConnectionState, config::{NULL_MAC, TCP_PING_TIME}, get_edge, network::{ARP_REPLY, ArpHdr, EthHdr, Node, RegisterSuperFeedback, StartStopInfo, check_peer_registration_needed, handle_packet_peer_info}, pb::{SdlArpResponse, SdlPolicyResponse, SdlRegisterSuper, SdlRegisterSuperAck, SdlRegisterSuperNak, SdlSendRegisterEvent, encode_to_tcp_message}, tcp::{EventType, NakMsgCode, NatType, PacketType, RuleInfo, SdlanTcp, read_a_packet, send_stun_request, set_identity_cache}};
static GLOBAL_QUIC_HANDLE: OnceLock<ReadWriterHandle> = OnceLock::new();
@ -190,7 +190,31 @@ async fn handle_tcp_message(msg: SdlanTcp) {
}
// TODO: construct the arp reply, and write to tun;
let src_mac = resp.target_mac.try_into().unwrap();
let dst_mac = edge.device_config.get_mac();
let dst_ip = edge.device_config.get_ip();
let hdr = ArpHdr{
ethhdr: EthHdr {
dest: dst_mac,
src: src_mac,
eth_type: 0x0806,
},
hwtype: 0x0001,
protocol: 0x0800,
hwlen: 6,
protolen: 4,
opcode: ARP_REPLY,
shwaddr: src_mac,
sipaddr: [((resp.target_ip >> 16) as u16) & 0xffff, (resp.target_ip as u16) & 0xffff],
dhwaddr: dst_mac,
dipaddr: [((dst_ip >> 16) & 0x0000ffff) as u16, (dst_ip & 0x0000ffff) as u16]
};
let data = hdr.marshal_to_bytes();
if let Err(e) = edge.device.send(&data) {
error!("failed to write arp response to device");
}
}
PacketType::PolicyReply => {
let Ok(policy) = SdlPolicyResponse::decode(&msg.current_packet[..]) else {