Add a bunch of C header samples for the Bayesian classifier

samples/C/ip4.h

@@ -0,0 +1,50 @@
+#pragma once
+
+/* Copyright © 2011 Lukas Martini
+ *
+ * This file is part of Xelix.
+ *
+ * Xelix is free software: you can redistribute it and/or modify
+ * it under the terms of the GNU General Public License as published by
+ * the Free Software Foundation, either version 3 of the License, or
+ * (at your option) any later version.
+ *
+ * Xelix is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with Xelix. If not, see <http://www.gnu.org/licenses/>.
+ */
+
+#include <lib/generic.h>
+#include <net/net.h>
+
+#define IP4_TOS_ICMP 0
+
+typedef uint32_t ip4_addr_t;
+
+typedef struct {
+	unsigned int hl:4; /* both fields are 4 bits */
+	unsigned int version:4;
+	uint8_t	tos;
+	uint16_t len;
+	uint16_t id;
+	uint16_t off;
+	uint8_t ttl;
+	uint8_t p;
+	uint16_t checksum;
+	ip4_addr_t src;
+	ip4_addr_t dst;
+} ip4_header_t;
+
+typedef struct {
+	uint8_t type;
+	uint8_t code;
+	uint16_t checksum;
+	uint16_t id;
+	uint16_t sequence;
+} ip4_icmp_header_t;
+
+void ip4_receive(net_device_t* origin, net_l2proto_t proto, size_t size, void* raw);