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Enhancement pseudo crc #9

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merged 2 commits into from
Dec 5, 2013
Merged

Enhancement pseudo crc #9

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7d95c10
Implement pseudo-checksum for IPv4 randomize
fklassen Dec 5, 2013
5f029c3
minor edits - closes #8
fklassen Dec 5, 2013
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minor edits - closes #8
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@fklassen
fklassen committed Dec 5, 2013
commit 5f029c389d3621099710d2fede60d4cde7f0718d
2 changes: 1 addition & 1 deletion src/tcpedit/checksum.c
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Expand Up @@ -86,7 +86,7 @@ void chksum_replace4(u_int16_t *sum, u_int32_t from, u_int32_t to)
* Apply modifications to an existing checksum based on
* 32-bit before and after values
*/
void cksum_replace2(u_int16_t *sum, u_int16_t from, u_int16_t to)
void chksum_replace2(u_int16_t *sum, u_int16_t from, u_int16_t to)
{
__chksum_replace4(sum, (u_int32_t)from, (u_int32_t)to);
}
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2 changes: 1 addition & 1 deletion src/tcpedit/checksum.h
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Expand Up @@ -38,6 +38,6 @@

int do_checksum(tcpedit_t *, u_int8_t *, int, int);
void chksum_replace4(u_int16_t *sum, u_int32_t from, u_int32_t to);
void cksum_replace2(u_int16_t *sum, u_int16_t from, u_int16_t to);
void ckksum_replace2(u_int16_t *sum, u_int16_t from, u_int16_t to);

#endif
2 changes: 1 addition & 1 deletion src/tcpedit/edit_packet.c
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Expand Up @@ -123,7 +123,7 @@ fix_ipv6_checksums(tcpedit_t *tcpedit, struct pcap_pkthdr *pkthdr, ipv6_hdr_t *i
int chksum_replace_ipv4(tcpedit_t *tcpedit, ipv4_hdr_t *ip_hdr, u_int32_t from, u_int32_t to)
{
if (tcpedit->fixcsum == TCPEDIT_FIXCSUM_DISABLE)
return 1;
return 0;

chksum_replace4(&ip_hdr->ip_sum, from, to);
return 0;
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