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fixed bug #26507: "Gratuitous ARP depends on arp_table / uses etharp_query" by adding etharp_gratuitous()

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This commit is contained in:
goldsimon 2009-05-12 20:13:45 +00:00
parent 078e2f60d6
commit 30acd1662d
4 changed files with 16 additions and 16 deletions
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4
CHANGELOG
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@ -109,6 +109,10 @@ HISTORY
++ Bugfixes:
2009-05-12 Simon Goldschmidt
* etharp.h, etharp.c, netif.c: fixed bug #26507: "Gratuitous ARP depends on
arp_table / uses etharp_query" by adding etharp_gratuitous()
2009-05-12 Simon Goldschmidt
* ip.h, ip.c, igmp.c: bug #26487: Added ip_output_if_opt that can add IP options
to the IP header (used by igmp_ip_output_if)

20
src/core/netif.c
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@ -401,13 +401,9 @@ void netif_set_up(struct netif *netif)
NETIF_STATUS_CALLBACK(netif);
#if LWIP_ARP
/** For Ethernet network interfaces, we would like to send a
* "gratuitous ARP"; this is an ARP packet sent by a node in order
* to spontaneously cause other nodes to update an entry in their
* ARP cache. From RFC 3220 "IP Mobility Support for IPv4" section 4.6.
*/
/* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
if (netif->flags & NETIF_FLAG_ETHARP) {
etharp_query(netif, &(netif->ip_addr), NULL);
etharp_gratuitous(netif);
}
#endif /* LWIP_ARP */
@ -464,14 +460,10 @@ void netif_set_link_up(struct netif *netif )
netif->flags |= NETIF_FLAG_LINK_UP;
#if LWIP_ARP
/** For Ethernet network interfaces, we would like to send a
* "gratuitous ARP"; this is an ARP packet sent by a node in order
* to spontaneously cause other nodes to update an entry in their
* ARP cache. From RFC 3220 "IP Mobility Support for IPv4" section 4.6.
*/
if (netif->flags & NETIF_FLAG_ETHARP) {
etharp_query(netif, &(netif->ip_addr), NULL);
}
/* For Ethernet network interfaces, we would like to send a "gratuitous ARP" */
if (netif->flags & NETIF_FLAG_ETHARP) {
etharp_gratuitous(netif);
}
#endif /* LWIP_ARP */
#if LWIP_IGMP

5
src/include/netif/etharp.h
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@ -151,6 +151,11 @@ void etharp_arp_input(struct netif *netif, struct eth_addr *ethaddr,
err_t etharp_output(struct netif *netif, struct pbuf *q, struct ip_addr *ipaddr);
err_t etharp_query(struct netif *netif, struct ip_addr *ipaddr, struct pbuf *q);
err_t etharp_request(struct netif *netif, struct ip_addr *ipaddr);
/** For Ethernet network interfaces, we might want to send "gratuitous ARP";
* this is an ARP packet sent by a node in order to spontaneously cause other
* nodes to update an entry in their ARP cache.
* From RFC 3220 "IP Mobility Support for IPv4" section 4.6. */
#define etharp_gratuitous(netif) etharp_request((netif), &(netif)->ip_addr)
err_t ethernet_input(struct pbuf *p, struct netif *netif);

3
src/netif/etharp.c
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@ -8,8 +8,7 @@
*
* This implementation complies with RFC 826 (Ethernet ARP). It supports
* Gratuitious ARP from RFC3220 (IP Mobility Support for IPv4) section 4.6
* if an interface calls etharp_query(our_netif, its_ip_addr, NULL) upon
* address change.
* if an interface calls etharp_gratuitous(our_netif) upon address change.
*/
/*