/* 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_info_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