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udhcpc: an option to perform ARP check (Jonas Danielsson <jonas.danielsson@axis.com>)

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configurable, ~+300 bytes when on.
This commit is contained in:
Denis Vlasenko
2007-11-22 00:58:49 +00:00
parent c881c733bb
commit 223bc97f61
9 changed files with 138 additions and 47 deletions
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16
networking/udhcp/clientpacket.c
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@ -69,6 +69,22 @@ static void add_requests(struct dhcpMessage *packet)
}
#if ENABLE_FEATURE_UDHCPC_ARPING
/* Unicast a DHCP decline message */
int send_decline(uint32_t xid, uint32_t server)
{
struct dhcpMessage packet;
init_packet(&packet, DHCPDECLINE);
packet.xid = xid;
add_requests(&packet);
bb_info_msg("Sending decline...");
return udhcp_raw_packet(&packet, INADDR_ANY, CLIENT_PORT, INADDR_BROADCAST,
SERVER_PORT, MAC_BCAST_ADDR, client_config.ifindex);
}
#endif
/* Broadcast a DHCP discover packet to the network, with an optionally requested IP */
int send_discover(uint32_t xid, uint32_t requested)