From 038722e045684a1a04f0fd6a51da2a6ea9dc9bb5 Mon Sep 17 00:00:00 2001
From: Marvin Borner
Date: Sat, 26 Sep 2020 13:19:06 +0200
Subject: Some random network things

---
 kernel/inc/net.h | 20 ++++++++++++++++----
 1 file changed, 16 insertions(+), 4 deletions(-)

(limited to 'kernel/inc/net.h')

diff --git a/kernel/inc/net.h b/kernel/inc/net.h
index 211cf90..300c0bd 100644
--- a/kernel/inc/net.h
+++ b/kernel/inc/net.h
@@ -5,10 +5,21 @@
 
 #include <def.h>
 
+#define htonl(l)                                                                                   \
+	((((l)&0xFF) << 24) | (((l)&0xFF00) << 8) | (((l)&0xFF0000) >> 8) |                        \
+	 (((l)&0xFF000000) >> 24))
+#define htons(s) ((((s)&0xFF) << 8) | (((s)&0xFF00) >> 8))
+#define ntohl(l) htonl((l))
+#define ntohs(s) htons((s))
+
 #define ETHERNET_TYPE_IP4 0x0800
 #define ETHERNET_TYPE_IP6 0x86dd
 #define ETHERNET_TYPE_ARP 0x0806
 
+#define IP_PROT_ICMP 0x01
+#define IP_PROT_TCP 0x06
+#define IP_PROT_UDP 0x11
+
 struct ethernet_packet {
 	u8 dst_mac_addr[6];
 	u8 src_mac_addr[6];
@@ -17,16 +28,17 @@ struct ethernet_packet {
 } __attribute__((packed));
 
 struct ip_packet {
-	u8 version_ihl;
+	u8 version : 4;
+	u8 ihl : 4;
 	u8 dscp_ecn;
 	u16 length;
 	u16 id;
-	u8 flags_fragment;
+	u16 flags_fragment;
 	u8 ttl;
 	u8 protocol;
 	u16 checksum;
-	u8 src_ip[4];
-	u8 dst_ip[4];
+	u32 src;
+	u32 dst;
 	u8 data[];
 } __attribute__((packed));
 
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