From 89d48367edbc878f86db3008a4107331ef07f578 Mon Sep 17 00:00:00 2001 From: Simon Glass Date: Wed, 16 Feb 2011 11:14:33 -0800 Subject: 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 --- net/eth.c | 41 ++++++++++++++++++++++------------------- 1 file changed, 22 insertions(+), 19 deletions(-) (limited to 'net') diff --git a/net/eth.c b/net/eth.c index 6082c90072..cec0387891 100644 --- a/net/eth.c +++ b/net/eth.c @@ -166,20 +166,33 @@ int eth_get_dev_index (void) 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 @@ int eth_initialize(bd_t *bis) 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 @@ void eth_try_another(int first_restart) 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 @@ void eth_set_current(void) } while (old_current != eth_current); } - setenv("ethact", eth_current->name); + eth_current_changed(); } char *eth_get_name (void) -- cgit v1.2.1