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authorBrian Niebuhr <bniebuhr@efjohnson.com>2009-08-14 10:04:22 -0500
committerGreg Kroah-Hartman <gregkh@suse.de>2009-09-23 06:46:35 -0700
commit9b39e9ddedeef48569f8aac60a7b4c1fbb127c7d (patch)
treed2cc583190e18fa03298e84093c3346e1646007c /drivers/usb/gadget/f_rndis.c
parent877accca79b706afe5d78b9a92cf4f22919fb2b0 (diff)
USB: gadget: Add EEM gadget driver
This patch adds a CDC EEM ethernet gadget driver. CDC EEM is a newer USB ethernet specification that uses a simpler interface than the older CDC ECM. This makes CDC EEM usable by a wider set of USB hardware. By default the ethernet gadget will still use CDC ECM/Subset, but kernel configuration and/or a module parameter will allow alternative use of the CDC EEM protocol. Changes since last version: - Brought in missing RNDIS changes that caused compile error - Modified 'sentinel CRC' checking to match EEM host driver Signed-off-by: Brian Niebuhr <bniebuhr@efjohnson.com> Cc: David Brownell <dbrownell@users.sourceforge.net> Signed-off-by: Greg Kroah-Hartman <gregkh@suse.de>
Diffstat (limited to 'drivers/usb/gadget/f_rndis.c')
-rw-r--r--drivers/usb/gadget/f_rndis.c15
1 files changed, 10 insertions, 5 deletions
diff --git a/drivers/usb/gadget/f_rndis.c b/drivers/usb/gadget/f_rndis.c
index 424a37c5773f..c9966cc07d3a 100644
--- a/drivers/usb/gadget/f_rndis.c
+++ b/drivers/usb/gadget/f_rndis.c
@@ -286,12 +286,17 @@ static struct usb_gadget_strings *rndis_strings[] = {
/*-------------------------------------------------------------------------*/
-static struct sk_buff *rndis_add_header(struct sk_buff *skb)
+static struct sk_buff *rndis_add_header(struct gether *port,
+ struct sk_buff *skb)
{
- skb = skb_realloc_headroom(skb, sizeof(struct rndis_packet_msg_type));
- if (skb)
- rndis_add_hdr(skb);
- return skb;
+ struct sk_buff *skb2;
+
+ skb2 = skb_realloc_headroom(skb, sizeof(struct rndis_packet_msg_type));
+ if (skb2)
+ rndis_add_hdr(skb2);
+
+ dev_kfree_skb_any(skb);
+ return skb2;
}
static void rndis_response_available(void *_rndis)