Add USB host ethernet adapter support
This adds support for using USB Ethernet dongles in host mode. This is just
the framework - drivers will come later. A new config option called
CONFIG_USB_HOST_ETHER can be defined in board config files to switch this
on.
The was originally written by NVIDIA and was cleaned up for release by the
Chromium authors.
Signed-off-by: Simon Glass <sjg@chromium.org>
diff --git a/net/eth.c b/net/eth.c
index 6082c90..cec0387 100644
--- a/net/eth.c
+++ b/net/eth.c
@@ -166,20 +166,33 @@
return (0);
}
-int eth_register(struct eth_device* dev)
+static void eth_current_changed(void)
{
- struct eth_device *d;
-
- if (!eth_devices) {
- eth_current = eth_devices = dev;
#ifdef CONFIG_NET_MULTI
+ {
+ char *act = getenv("ethact");
/* update current ethernet name */
+ if (eth_current)
{
- char *act = getenv("ethact");
if (act == NULL || strcmp(act, eth_current->name) != 0)
setenv("ethact", eth_current->name);
}
+ /*
+ * remove the variable completely if there is no active
+ * interface
+ */
+ else if (act != NULL)
+ setenv("ethact", NULL);
+ }
#endif
+}
+
+int eth_register(struct eth_device *dev)
+{
+ struct eth_device *d;
+ if (!eth_devices) {
+ eth_current = eth_devices = dev;
+ eth_current_changed();
} else {
for (d=eth_devices; d->next!=eth_devices; d=d->next)
;
@@ -271,14 +284,7 @@
dev = dev->next;
} while(dev != eth_devices);
- /* update current ethernet name */
- if (eth_current) {
- char *act = getenv("ethact");
- if (act == NULL || strcmp(act, eth_current->name) != 0)
- setenv("ethact", eth_current->name);
- } else
- setenv("ethact", NULL);
-
+ eth_current_changed();
putc ('\n');
}
@@ -466,10 +472,7 @@
eth_current = eth_current->next;
- /* update current ethernet name */
- act = getenv("ethact");
- if (act == NULL || strcmp(act, eth_current->name) != 0)
- setenv("ethact", eth_current->name);
+ eth_current_changed();
if (first_failed == eth_current) {
NetRestartWrap = 1;
@@ -500,7 +503,7 @@
} while (old_current != eth_current);
}
- setenv("ethact", eth_current->name);
+ eth_current_changed();
}
char *eth_get_name (void)