X-Git-Url: https://git.sur5r.net/?a=blobdiff_plain;f=net%2Farp.c;h=8e1d2edd6207a43e4ad16a5d42a3aad8147427ce;hb=aa42cb71fa28a4f2c8b8cc0e691151f4ba19dbd9;hp=908ebf53165a334e25096be1719241db138700e0;hpb=228041893c2b6f79326f4b49ee7b3b3a90e90e8e;p=u-boot

diff --git a/net/arp.c b/net/arp.c
index 908ebf5316..8e1d2edd62 100644
--- a/net/arp.c
+++ b/net/arp.c
@@ -55,7 +55,7 @@ void arp_raw_request(IPaddr_t sourceIP, const uchar *targetEther,
 	struct arp_hdr *arp;
 	int eth_hdr_size;
 
-	debug("ARP broadcast %d\n", NetArpWaitTry);
+	debug_cond(DEBUG_DEV_PKT, "ARP broadcast %d\n", NetArpWaitTry);
 
 	pkt = NetArpTxPacket;
 
@@ -135,7 +135,7 @@ void ArpReceive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, int len)
 	 *   address; so if we receive such a packet, we set
 	 *   the server ethernet address
 	 */
-	debug("Got ARP\n");
+	debug_cond(DEBUG_NET_PKT, "Got ARP\n");
 
 	arp = (struct arp_hdr *)ip;
 	if (len < ARP_HDR_SIZE) {
@@ -160,7 +160,7 @@ void ArpReceive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, int len)
 	switch (ntohs(arp->ar_op)) {
 	case ARPOP_REQUEST:
 		/* reply with our IP address */
-		debug("Got ARP REQUEST, return our IP\n");
+		debug_cond(DEBUG_DEV_PKT, "Got ARP REQUEST, return our IP\n");
 		pkt = (uchar *)et;
 		eth_hdr_size = net_update_ether(et, et->et_src, PROT_ARP);
 		pkt += eth_hdr_size;
@@ -169,6 +169,20 @@ void ArpReceive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, int len)
 		NetCopyIP(&arp->ar_tpa, &arp->ar_spa);
 		memcpy(&arp->ar_sha, NetOurEther, ARP_HLEN);
 		NetCopyIP(&arp->ar_spa, &NetOurIP);
+
+#ifdef CONFIG_CMD_LINK_LOCAL
+		/*
+		 * Work-around for brain-damaged Cisco equipment with
+		 *   arp-proxy enabled.
+		 *
+		 *   If the requesting IP is not on our subnet, wait 5ms to
+		 *   reply to ARP request so that our reply will overwrite
+		 *   the arp-proxy's instead of the other way around.
+		 */
+		if ((NetReadIP(&arp->ar_tpa) & NetOurSubnetMask) !=
+		    (NetReadIP(&arp->ar_spa) & NetOurSubnetMask))
+			udelay(5000);
+#endif
 		NetSendPacket((uchar *)et, eth_hdr_size + ARP_HDR_SIZE);
 		return;
 
@@ -180,7 +194,7 @@ void ArpReceive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, int len)
 #ifdef CONFIG_KEEP_SERVERADDR
 		if (NetServerIP == NetArpWaitPacketIP) {
 			char buf[20];
-			sprintf(buf, "%pM", arp->ar_sha);
+			sprintf(buf, "%pM", &arp->ar_sha);
 			setenv("serveraddr", buf);
 		}
 #endif
@@ -189,7 +203,8 @@ void ArpReceive(struct ethernet_hdr *et, struct ip_udp_hdr *ip, int len)
 
 		/* matched waiting packet's address */
 		if (reply_ip_addr == NetArpWaitReplyIP) {
-			debug("Got ARP REPLY, set eth addr (%pM)\n",
+			debug_cond(DEBUG_DEV_PKT,
+				"Got ARP REPLY, set eth addr (%pM)\n",
 				arp->ar_data);
 
 			/* save address for later use */