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Corrected the range calculation of LWIP_AUTOIP_CREATE_SEED_ADDR, corrected comments

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goldsimon 2008-12-04 18:34:48 +00:00
parent 491b73d5f2
commit 2cf3e6e9bc
1 changed files with 5 additions and 8 deletions
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13
src/core/ipv4/autoip.c
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@ -104,8 +104,8 @@
/* static functions */ /* static functions */
static void autoip_handle_arp_conflict(struct netif *netif); static void autoip_handle_arp_conflict(struct netif *netif);
/* creates random LL IP-Address for a network interface */ /* creates a pseudo random LL IP-Address for a network interface */
static void autoip_create_addr(struct netif *netif, struct ip_addr *RandomIPAddr); static void autoip_create_addr(struct netif *netif, struct ip_addr *IPAddr);
/* sends an ARP announce */ /* sends an ARP announce */
static err_t autoip_arp_announce(struct netif *netif); static err_t autoip_arp_announce(struct netif *netif);
@ -170,12 +170,9 @@ autoip_create_addr(struct netif *netif, struct ip_addr *IPAddr)
*/ */
u16_t seed = LWIP_AUTOIP_CREATE_SEED_ADDR(netif); u16_t seed = LWIP_AUTOIP_CREATE_SEED_ADDR(netif);
/* seed must be between .1.0 and .254.255 */ /* seed must be between 0 and 0xFDFF since it is added to 169.254.1.0 */
if(seed < 0x0100) { if(seed > 0xFDFF) {
seed += 0x0100; see -= 0x0200;
}
if(seed > 0xFEFF) {
see -= 0x0100;
} }
IPAddr->addr = (AUTOIP_RANGE_START + seed + netif->autoip->tried_llipaddr); IPAddr->addr = (AUTOIP_RANGE_START + seed + netif->autoip->tried_llipaddr);