1 files changed, 0 insertions, 98 deletions
diff --git a/network/ipv4.c b/network/ipv4.c
deleted file mode 100644
index 099aa0d..0000000
--- a/network/ipv4.c
+++ /dev/null
@@ -1,98 +0,0 @@
-#include <assert.h>
-#include <kmalloc.h>
-#include <network/arp.h>
-#include <network/bytes.h>
-#include <network/ethernet.h>
-#include <network/ipv4.h>
-#include <network/udp.h>
-#include <string.h>
-
-uint16_t ip_checksum(void *vdata, size_t length) {
-  // Cast the data pointer to one that can be indexed.
-  char *data = (char *)vdata;
-
-  // Initialise the accumulator.
-  uint32_t acc = 0xffff;
-
-  // Handle complete 16-bit blocks.
-  for (size_t i = 0; i + 1 < length; i += 2) {
-    uint16_t word;
-    memcpy(&word, data + i, 2);
-    acc += ntohs(word);
-    if (acc > 0xffff) {
-      acc -= 0xffff;
-    }
-  }
-
-  // Handle any partial block at the end of the data.
-  if (length & 1) {
-    uint16_t word = 0;
-    memcpy(&word, data + length - 1, 1);
-    acc += ntohs(word);
-    if (acc > 0xffff) {
-      acc -= 0xffff;
-    }
-  }
-
-  // Return the checksum in network byte order.
-  return htons(~acc);
-}
-
-extern uint8_t ip_address[4];
-void send_ipv4_packet(uint32_t ip, uint8_t protocol, const uint8_t *payload,
-                      uint16_t length) {
-  uint8_t header[20] = {0};
-  header[0] = (4 /*version*/ << 4) | (5 /*IHL*/);
-  *((uint16_t *)(header + 2)) = htons(length + 20);
-  header[8 /*TTL*/] = 0xF8;
-  header[9] = protocol;
-
-  memcpy(header + 12 /*src_ip*/, ip_address, sizeof(uint8_t[4]));
-  memcpy(header + 16, &ip, sizeof(uint8_t[4]));
-
-  *((uint16_t *)(header + 10 /*checksum*/)) = ip_checksum(header, 20);
-  uint16_t packet_length = length + 20;
-  uint8_t *packet = kmalloc(packet_length);
-  memcpy(packet, header, 20);
-  memcpy(packet + 20, payload, length);
-
-  uint8_t mac[6];
-  uint8_t ip_copy[4]; // TODO: Do I need to do this?
-  memcpy(ip_copy, &ip, sizeof(uint8_t[4]));
-  get_mac_from_ip(ip_copy, mac);
-  send_ethernet_packet(mac, 0x0800, packet, packet_length);
-  kfree(packet);
-}
-
-void handle_ipv4(const uint8_t *payload, uint32_t packet_length) {
-  assert(packet_length > 4);
-
-  uint16_t saved_checksum = *(uint16_t *)(payload + 10);
-  *(uint16_t *)(payload + 10) = 0;
-  uint16_t calc_checksum = ip_checksum((uint8_t *)payload, 20);
-  *(uint16_t *)(payload + 10) = saved_checksum;
-  assert(calc_checksum == saved_checksum);
-
-  uint8_t version = (*payload & 0xF0) >> 4;
-  uint8_t IHL = (*payload & 0xF);
-  kprintf("version: %x\n", version);
-  assert(4 == version);
-  assert(5 == IHL);
-  uint16_t ipv4_total_length = ntohs(*(uint16_t *)(payload + 2));
-  assert(ipv4_total_length >= 20);
-  // Make sure the ipv4 header is not trying to get uninitalized memory
-  assert(ipv4_total_length <= packet_length);
-
-  uint8_t src_ip[4];
-  memcpy(src_ip, payload + 12, sizeof(uint8_t[4]));
-
-  uint8_t protocol = *(payload + 9);
-  switch (protocol) {
-  case 0x11:
-    handle_udp(src_ip, payload + 20, ipv4_total_length - 20);
-    break;
-  default:
-    kprintf("Protocol given in IPv4 header not handeld: %x\n", protocol);
-    break;
-  }
-}