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net: add 'ethrotate' environment variable 

[PATCH] net: add 'ethrotate' environment variable

This patch replaces the buildtime configuration option
CONFIG_NET_DO_NOT_TRY_ANOTHER through the 'ethrotate' runtime
configuration veriable. See README.

Signed-off-by: Matthias Fuchs <matthias.fuchs@esd-electronics.com>
Signed-off-by: Ben Warren <biggerbadderben@gmail.com>
This commit is contained in:
Matthias Fuchs 2008-01-17 07:45:05 +01:00 committed by Ben Warren
parent 7f52fa3c2d
commit e169257732
2 changed files with 13 additions and 0 deletions
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4
README
View File

@ -2691,6 +2691,10 @@ Some configuration options can be set using Environment Variables:
=> setenv ethact SCC ETHERNET
=> ping 10.0.0.1 # traffic sent on SCC ETHERNET
ethrotate - When set to "no" U-Boot does not go through all
available network interfaces.
It just stays at the currently selected interface.
netretry - When set to "no" each network operation will
either succeed or fail without retrying.
When set to "once" the network operation will

9
net/eth.c
View File

@ -525,6 +525,15 @@ int eth_receive(volatile void *packet, int length)
void eth_try_another(int first_restart)
{
static struct eth_device *first_failed = NULL;
char *ethrotate;
/*
* Do not rotate between network interfaces when
* 'ethrotate' variable is set to 'no'.
*/
if (((ethrotate = getenv ("ethrotate")) != NULL) &&
(strcmp(ethrotate, "no") == 0))
return;
if (!eth_current)
return;