diff options
| author | Brian Niebuhr <bniebuhr@efjohnson.com> | 2009-08-14 10:04:22 -0500 |
|---|---|---|
| committer | Greg Kroah-Hartman <gregkh@suse.de> | 2009-09-23 06:46:35 -0700 |
| commit | 9b39e9ddedeef48569f8aac60a7b4c1fbb127c7d (patch) | |
| tree | d2cc583190e18fa03298e84093c3346e1646007c /drivers/usb/gadget/rndis.c | |
| parent | 877accca79b706afe5d78b9a92cf4f22919fb2b0 (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/rndis.c')
| -rw-r--r-- | drivers/usb/gadget/rndis.c | 13 |
1 files changed, 10 insertions, 3 deletions
diff --git a/drivers/usb/gadget/rndis.c b/drivers/usb/gadget/rndis.c index ca41b0b5afb3..48267bc0b2e0 100644 --- a/drivers/usb/gadget/rndis.c +++ b/drivers/usb/gadget/rndis.c @@ -1022,22 +1022,29 @@ static rndis_resp_t *rndis_add_response (int configNr, u32 length) return r; } -int rndis_rm_hdr(struct sk_buff *skb) +int rndis_rm_hdr(struct gether *port, + struct sk_buff *skb, + struct sk_buff_head *list) { /* tmp points to a struct rndis_packet_msg_type */ __le32 *tmp = (void *) skb->data; /* MessageType, MessageLength */ if (cpu_to_le32(REMOTE_NDIS_PACKET_MSG) - != get_unaligned(tmp++)) + != get_unaligned(tmp++)) { + dev_kfree_skb_any(skb); return -EINVAL; + } tmp++; /* DataOffset, DataLength */ - if (!skb_pull(skb, get_unaligned_le32(tmp++) + 8)) + if (!skb_pull(skb, get_unaligned_le32(tmp++) + 8)) { + dev_kfree_skb_any(skb); return -EOVERFLOW; + } skb_trim(skb, get_unaligned_le32(tmp++)); + skb_queue_tail(list, skb); return 0; } |