initial import from picomap firmware

2026-04-19 17:28:44 -07:00
commit 92d2ce8181
37 changed files with 3914 additions and 0 deletions
--- a/include/arp.h
+++ b/include/arp.h
@@ -0,0 +1,24 @@
+#pragma once
+#include <span>
+#include "eth.h"
+#include "ipv4.h"
+#include "span_writer.h"
+
+namespace arp {
+
+struct __attribute__((packed)) header {
+    uint16_t htype;
+    uint16_t ptype;
+    uint8_t hlen;
+    uint8_t plen;
+    uint16_t oper;
+    eth::mac_addr sha;
+    ipv4::ip4_addr spa;
+    eth::mac_addr tha;
+    ipv4::ip4_addr tpa;
+};
+static_assert(sizeof(header) == 28);
+
+void handle(std::span<const uint8_t> frame, span_writer& tx);
+
+} // namespace arp