sock: pass protocol to sockets

kernel-src/include/kernel/raw.h

@@ -1,7 +1,15 @@
 #ifndef _RAW_H
 #define _RAW_H
 
-void raw_process(netdev_t *netdev, void *buffer, uint32_t peer);
-socket_t *raw_create_socket(void);
+typedef struct socket socket_t;
+
+typedef struct {
+	uint16_t netdev; // 1-based index that gets transformed into a minor number
+	uint16_t proto;
+	uint8_t mac[6];
+} raw_addr_t;
+
+void raw_process(netdev_t *netdev, void *buffer, mac_t *sender, uint16_t proto, size_t size);
+socket_t *raw_create_socket(int protocol);
 
 #endif