diff options
Diffstat (limited to 'nuttx/net/uip/uip_neighbor.c')
| -rw-r--r-- | nuttx/net/uip/uip_neighbor.c | 162 |
1 files changed, 0 insertions, 162 deletions
diff --git a/nuttx/net/uip/uip_neighbor.c b/nuttx/net/uip/uip_neighbor.c deleted file mode 100644 index 82fb9a845..000000000 --- a/nuttx/net/uip/uip_neighbor.c +++ /dev/null @@ -1,162 +0,0 @@ -/* - * uip_neighbor.c - * Database of link-local neighbors, used by IPv6 code and to be used by - * a future ARP code rewrite. - * - * Author: Adam Dunkels <adam@sics.se> - * Copyright (c) 2006, Swedish Institute of Computer Science. - * All rights reserved. - * - * Redistribution and use in source and binary forms, with or without - * modification, are permitted provided that the following conditions - * are met: - * 1. Redistributions of source code must retain the above copyright - * notice, this list of conditions and the following disclaimer. - * 2. Redistributions in binary form must reproduce the above copyright - * notice, this list of conditions and the following disclaimer in the - * documentation and/or other materials provided with the distribution. - * 3. Neither the name of the Institute nor the names of its contributors - * may be used to endorse or promote products derived from this software - * without specific prior written permission. - * - * THIS SOFTWARE IS PROVIDED BY THE INSTITUTE AND CONTRIBUTORS ``AS IS'' AND - * ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE - * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE - * ARE DISCLAIMED. IN NO EVENT SHALL THE INSTITUTE OR CONTRIBUTORS BE LIABLE - * FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL - * DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS - * OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) - * HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT - * LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY - * OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF - * SUCH DAMAGE. - */ - -#include <string.h> -#include <debug.h> - -#include "uip_neighbor.h" - -#define MAX_TIME 128 - -#ifdef UIP_NEIGHBOR_CONF_ENTRIES -#define ENTRIES UIP_NEIGHBOR_CONF_ENTRIES -#else /* UIP_NEIGHBOR_CONF_ENTRIES */ -#define ENTRIES 8 -#endif /* UIP_NEIGHBOR_CONF_ENTRIES */ - -struct neighbor_entry -{ - uip_ipaddr_t ipaddr; - struct uip_neighbor_addr addr; - uint8_t time; -}; -static struct neighbor_entry entries[ENTRIES]; - -void uip_neighbor_init(void) -{ - int i; - - for(i = 0; i < ENTRIES; ++i) - { - entries[i].time = MAX_TIME; - } -} - -void uip_neighbor_periodic(void) -{ - int i; - - for(i = 0; i < ENTRIES; ++i) - { - if (entries[i].time < MAX_TIME) - { - entries[i].time++; - } - } -} - -void uip_neighbor_add(uip_ipaddr_t ipaddr, struct uip_neighbor_addr *addr) -{ - uint8_t oldest_time; - int oldest; - int i; - - nlldbg("Add neighbor: %02x:%02x:%02x:%02x:%02x:%02x\n", - addr->addr.ether_addr_octet[0], addr->addr.ether_addr_octet[1], - addr->addr.ether_addr_octet[2], addr->addr.ether_addr_octet[3], - addr->addr.ether_addr_octet[4], addr->addr.ether_addr_octet[5]); - - /* Find the first unused entry or the oldest used entry. */ - - oldest_time = 0; - oldest = 0; - for (i = 0; i < ENTRIES; ++i) - { - if (entries[i].time == MAX_TIME) - { - oldest = i; - break; - } - if (uip_ipaddr_cmp(entries[i].ipaddr, addr)) - { - oldest = i; - break; - } - if (entries[i].time > oldest_time) - { - oldest = i; - oldest_time = entries[i].time; - } - } - - /* Use the oldest or first free entry (either pointed to by the - * "oldest" variable). - */ - - entries[oldest].time = 0; - uip_ipaddr_copy(entries[oldest].ipaddr, ipaddr); - memcpy(&entries[oldest].addr, addr, sizeof(struct uip_neighbor_addr)); -} - -static struct neighbor_entry *find_entry(uip_ipaddr_t ipaddr) -{ - int i; - - for(i = 0; i < ENTRIES; ++i) - { - if (uip_ipaddr_cmp(entries[i].ipaddr, ipaddr)) - { - return &entries[i]; - } - } - return NULL; -} - -void uip_neighbor_update(uip_ipaddr_t ipaddr) -{ - struct neighbor_entry *e; - - e = find_entry(ipaddr); - if (e != NULL) - { - e->time = 0; - } -} - -struct uip_neighbor_addr *uip_neighbor_lookup(uip_ipaddr_t ipaddr) -{ - struct neighbor_entry *e; - - e = find_entry(ipaddr); - if (e != NULL) - { - nlldbg("Lookup neighbor: %02x:%02x:%02x:%02x:%02x:%02x\n", - e->addr.addr.ether_addr_octet[0], e->addr.addr.ether_addr_octet[1], - e->addr.addr.ether_addr_octet[2], e->addr.addr.ether_addr_octet[3], - e->addr.addr.ether_addr_octet[4], e->addr.addr.ether_addr_octet[5]); - - return &e->addr; - } - return NULL; -} |