diff options
Diffstat (limited to 'net/arp.c')
| -rw-r--r-- | net/arp.c | 22 |
1 files changed, 13 insertions, 9 deletions
@@ -48,7 +48,8 @@ void ArpInit(void) NetArpTxPacket -= (ulong)NetArpTxPacket % PKTALIGN; } -void ArpRequest(void) +void arp_raw_request(IPaddr_t sourceIP, const uchar *targetEther, + IPaddr_t targetIP) { uchar *pkt; struct arp_hdr *arp; @@ -69,12 +70,16 @@ void ArpRequest(void) arp->ar_pln = ARP_PLEN; arp->ar_op = htons(ARPOP_REQUEST); - /* source ET addr */ - memcpy(&arp->ar_sha, NetOurEther, ARP_HLEN); - /* source IP addr */ - NetWriteIP(&arp->ar_spa, NetOurIP); - /* dest ET addr = 0 */ - memset(&arp->ar_tha, 0, ARP_HLEN); + memcpy(&arp->ar_sha, NetOurEther, ARP_HLEN); /* source ET addr */ + NetWriteIP(&arp->ar_spa, sourceIP); /* source IP addr */ + memcpy(&arp->ar_tha, targetEther, ARP_HLEN); /* target ET addr */ + NetWriteIP(&arp->ar_tpa, targetIP); /* target IP addr */ + + NetSendPacket(NetArpTxPacket, eth_hdr_size + ARP_HDR_SIZE); +} + +void ArpRequest(void) +{ if ((NetArpWaitPacketIP & NetOurSubnetMask) != (NetOurIP & NetOurSubnetMask)) { if (NetOurGatewayIP == 0) { @@ -87,8 +92,7 @@ void ArpRequest(void) NetArpWaitReplyIP = NetArpWaitPacketIP; } - NetWriteIP(&arp->ar_tpa, NetArpWaitReplyIP); - NetSendPacket(NetArpTxPacket, eth_hdr_size + ARP_HDR_SIZE); + arp_raw_request(NetOurIP, NetEtherNullAddr, NetArpWaitReplyIP); } void ArpTimeoutCheck(void) |