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chore(connlib): don't panic on invalid IP packet from smoltcp (#7267)

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`smoltcp` should never emit a buffer that isn't a valid IP packet but in
case it does, we shouldn't panic as a result and instead just discard
the packet.
This commit is contained in:
Thomas Eizinger
2024-11-06 01:33:50 +11:00
committed by GitHub
parent 9d7a597c05
commit 0d74fb3caf
1 changed files with 4 additions and 1 deletions
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5
rust/dns-over-tcp/src/stub_device.rs
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@@ -73,7 +73,10 @@ impl<'a> smoltcp::phy::TxToken for SmolTxToken<'a> {
let mut ip_packet_buf = IpPacketBuf::new();
let result = f(ip_packet_buf.buf());
let mut ip_packet = IpPacket::new(ip_packet_buf, len).unwrap();
let Some(mut ip_packet) = IpPacket::new(ip_packet_buf, len) else {
tracing::warn!("Received invalid IP packet");
return result;
};
ip_packet.update_checksum();
self.outbound_packets.push_back(ip_packet);