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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>
utp
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 => setenv ethact SCC ETHERNET
=> ping 10.0.0.1 # traffic sent on 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 netretry - When set to "no" each network operation will
either succeed or fail without retrying. either succeed or fail without retrying.
When set to "once" the network operation will 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) void eth_try_another(int first_restart)
{ {
static struct eth_device *first_failed = NULL; 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) if (!eth_current)
return; return;