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/* vi: set sw=4 ts=4: */
/*
* Storing and retrieving data for static leases
*
* Wade Berrier <wberrier@myrealbox.com> September 2004
*
* Licensed under GPLv2, see file LICENSE in this source tree.
*/
#include "common.h"
#include "dhcpd.h"
/* Takes the address of the pointer to the static_leases linked list,
* address to a 6 byte mac address,
* 4 byte IP address */
void FAST_FUNC add_static_lease(struct static_lease **st_lease_pp,
uint8_t *mac,
uint32_t nip)
{
struct static_lease *st_lease;
/* Find the tail of the list */
while ((st_lease = *st_lease_pp) != NULL) {
st_lease_pp = &st_lease->next;
}
/* Add new node */
*st_lease_pp = st_lease = xzalloc(sizeof(*st_lease));
memcpy(st_lease->mac, mac, 6);
st_lease->nip = nip;
/*st_lease->next = NULL;*/
}
/* Find static lease IP by mac */
uint32_t FAST_FUNC get_static_nip_by_mac(struct static_lease *st_lease, void *mac)
{
while (st_lease) {
if (memcmp(st_lease->mac, mac, 6) == 0)
return st_lease->nip;
st_lease = st_lease->next;
}
return 0;
}
/* Check to see if an IP is reserved as a static IP */
int FAST_FUNC is_nip_reserved(struct static_lease *st_lease, uint32_t nip)
{
while (st_lease) {
if (st_lease->nip == nip)
return 1;
st_lease = st_lease->next;
}
return 0;
}
#if defined CONFIG_UDHCP_DEBUG && CONFIG_UDHCP_DEBUG >= 2
/* Print out static leases just to check what's going on */
/* Takes the address of the pointer to the static_leases linked list */
void FAST_FUNC log_static_leases(struct static_lease **st_lease_pp)
{
struct static_lease *cur;
if (dhcp_verbose < 2)
return;
cur = *st_lease_pp;
while (cur) {
bb_error_msg("static lease: mac:%02x:%02x:%02x:%02x:%02x:%02x nip:%x",
cur->mac[0], cur->mac[1], cur->mac[2],
cur->mac[3], cur->mac[4], cur->mac[5],
cur->nip
);
cur = cur->next;
}
}
#endif
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