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A bit of code cleanup

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This commit is contained in:
Michal Zima
2012-07-03 11:15:10 +02:00
parent 707eb6159b
commit 59fdab7ed8
13 changed files with 159 additions and 68 deletions
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22
src/ipv4.c
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@@ -26,6 +26,15 @@
#include "udp.h"
#include "wrapper.h"
/**
* Processing of IPv4 packets.
*
* @param eth Ethernet header
* @param packet Packet data
*
* @return 0 for success
* @return 1 for failure
*/
int ipv4(struct s_ethernet *eth, char *packet)
{
struct s_ipv4 *ip;
@@ -42,8 +51,6 @@ int ipv4(struct s_ethernet *eth, char *packet)
return 1;
}
/* TODO: verify checksum */
/* compute sizes and get payload */
header_size = (ip->ver_hdrlen & 0x0f) * 4; /* # of 4 byte words */
data_size = htons(ip->len) - header_size;
@@ -52,21 +59,16 @@ int ipv4(struct s_ethernet *eth, char *packet)
switch (ip->proto) {
case IPPROTO_TCP:
printf("[Debug] IPv4 Protocol: TCP\n");
tcp_ipv4(eth, ip, payload, data_size);
break;
return tcp_ipv4(eth, ip, payload, data_size);
case IPPROTO_UDP:
printf("[Debug] IPv4 Protocol: UDP\n");
udp_ipv4(eth, ip, payload, data_size);
break;
return udp_ipv4(eth, ip, payload, data_size);
case IPPROTO_ICMP:
printf("[Debug] IPv4 Protocol: ICMP\n");
icmp_ipv4(eth, ip, payload, data_size);
break;
return icmp_ipv4(eth, ip, payload, data_size);
default:
printf("[Debug] IPv4 Protocol: unknown [%d/0x%x]\n",
ip->proto, ip->proto);
return 1;
}
return 0;
}