user/ethdump: file per protocol, ethernet frame functions

1 files changed, 31 insertions, 0 deletions

diff --git a/src/user/app/ethdump/proto.h b/src/user/app/ethdump/proto.h
new file mode 100644
index 0000000..f47ca53
--- /dev/null
+++ b/src/user/app/ethdump/proto.h
@@ -0,0 +1,31 @@
+#pragma once
+#include <camellia/types.h>
+#include <stdint.h>
+
+typedef uint8_t mac_t[6];
+
+extern struct net_state {
+	mac_t mac;
+	uint32_t ip;
+
+	handle_t raw_h;
+} state;
+
+enum { /* ethertype */
+	ET_IPv4 = 0x800,
+	ET_ARP  = 0x806,
+};
+
+struct ethernet {
+	const mac_t *src, *dst;
+	uint16_t type;
+};
+
+
+void arp_parse(const uint8_t *buf, size_t len);
+void icmp_parse(const uint8_t *buf, size_t len);
+void ipv4_parse(const uint8_t *buf, size_t len);
+
+void ether_parse(const uint8_t *buf, size_t len);
+uint8_t *ether_start(size_t len, struct ethernet ether);
+void ether_finish(uint8_t *pkt);