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udhcp: cosmetics in arpping.c, no code changes

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Signed-off-by: Denys Vlasenko <vda.linux@googlemail.com>
This commit is contained in:
Denys Vlasenko 2009-06-17 13:56:50 +02:00
parent 799d00e84c
commit dc36a72ac0
1 changed files with 6 additions and 10 deletions
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16
networking/udhcp/arpping.c
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@ -7,14 +7,12 @@
* *
* Licensed under GPLv2, see file LICENSE in this tarball for details. * Licensed under GPLv2, see file LICENSE in this tarball for details.
*/ */
#include <netinet/if_ether.h> #include <netinet/if_ether.h>
#include <net/if_arp.h> #include <net/if_arp.h>
#include "common.h" #include "common.h"
#include "dhcpd.h" #include "dhcpd.h"
struct arpMsg { struct arpMsg {
/* Ethernet header */ /* Ethernet header */
uint8_t h_dest[6]; /* 00 destination ether addr */ uint8_t h_dest[6]; /* 00 destination ether addr */
@ -38,9 +36,7 @@ enum {
ARP_MSG_SIZE = 0x2a ARP_MSG_SIZE = 0x2a
}; };
/* Returns 1 if no reply received */ /* Returns 1 if no reply received */
int FAST_FUNC arpping(uint32_t test_nip, int FAST_FUNC arpping(uint32_t test_nip,
const uint8_t *safe_mac, const uint8_t *safe_mac,
uint32_t from_ip, uint32_t from_ip,
@ -103,7 +99,7 @@ int FAST_FUNC arpping(uint32_t test_nip,
if (r < 0) if (r < 0)
break; break;
//bb_error_msg("sHaddr %02x:%02x:%02x:%02x:%02x:%02x", //log3("sHaddr %02x:%02x:%02x:%02x:%02x:%02x",
// arp.sHaddr[0], arp.sHaddr[1], arp.sHaddr[2], // arp.sHaddr[0], arp.sHaddr[1], arp.sHaddr[2],
// arp.sHaddr[3], arp.sHaddr[4], arp.sHaddr[5]); // arp.sHaddr[3], arp.sHaddr[4], arp.sHaddr[5]);
@ -113,13 +109,13 @@ int FAST_FUNC arpping(uint32_t test_nip,
/* && memcmp(arp.tHaddr, from_mac, 6) == 0 */ /* && memcmp(arp.tHaddr, from_mac, 6) == 0 */
&& *((uint32_t *) arp.sInaddr) == test_nip && *((uint32_t *) arp.sInaddr) == test_nip
) { ) {
/* if ARP source MAC matches safe_mac /* if ARP source MAC matches safe_mac
* (which is client's MAC), then it's not a conflict * (which is client's MAC), then it's not a conflict
* (client simply already has this IP and replies to ARPs!) * (client simply already has this IP and replies to ARPs!)
*/ */
if (!safe_mac || memcmp(safe_mac, arp.sHaddr, 6) != 0) if (!safe_mac || memcmp(safe_mac, arp.sHaddr, 6) != 0)
rv = 0; rv = 0;
//else bb_error_msg("sHaddr == safe_mac"); //else log2("sHaddr == safe_mac");
break; break;
} }
} }