From 97cfe86163505ea18e7ff7b71e78df5bb03dad57 Mon Sep 17 00:00:00 2001 From: Robin Getz Date: Tue, 21 Jul 2009 12:15:28 -0400 Subject: [PATCH] Save server's MAC address in environment Linux's netconsole works much better when you can pass it the MAC address of the server. (otherwise it just uses broadcast, which everyone else on my network complains about :) This sets the env var "serveraddr" (to match ethaddr), so that you can pass it to linux with whatever bootargs you want to.... addnetconsole=set bootargs $(bootargs) netconsole=@$(ipaddr)/eth0,@$(serverip)/$(serveraddr) Signed-of-by: Robin Getz Signed-off-by: Ben Warren --- README | 5 +++++ net/net.c | 9 +++++++++ 2 files changed, 14 insertions(+) diff --git a/README b/README index 4c74cb7934..90714727cd 100644 --- a/README +++ b/README @@ -1184,6 +1184,11 @@ The following options need to be configured: Defines a default value for the IP address of a TFTP server to contact when using the "tftboot" command. + CONFIG_KEEP_SERVERADDR + + Keeps the server's MAC address, in the env 'serveraddr' + for passing to bootargs (like Linux's netconsole option) + - Multicast TFTP Mode: CONFIG_MCAST_TFTP diff --git a/net/net.c b/net/net.c index 7ce947db30..641c37cb8f 100644 --- a/net/net.c +++ b/net/net.c @@ -1287,6 +1287,15 @@ NetReceive(volatile uchar * inpkt, int len) /* are we waiting for a reply */ if (!NetArpWaitPacketIP || !NetArpWaitPacketMAC) break; + +#ifdef CONFIG_KEEP_SERVERADDR + if (NetServerIP == NetArpWaitPacketIP) { + char buf[20]; + sprintf(buf, "%pM", arp->ar_data); + setenv("serveraddr", buf); + } +#endif + #ifdef ET_DEBUG printf("Got ARP REPLY, set server/gtwy eth addr (%pM)\n", arp->ar_data); -- 2.25.1