Updated QMI RAW IP Only driver and plausible bug found in qmi_wwan.c

[Markus Gothe]

I realised that the headroom must be resized for some non-x86-architectures like:
	if((skb_headroom(skb) < ETH_HLEN) && pskb_expand_head(skb, ETH_HLEN - skb_headroom(skb), 0, GFP_ATOMIC)){ /* Fix headroom if it is too small */
		return 0;
	}

In the rx mixup path in qmi_wwan.c such raw IP-packet would be discarded on some architectures since it doesn’t try to resize the headroom.
So I’ve updated the qmi_raw_ip_wwan.c to reflect this change.

As one might notice I’ve not added full IPv6-support since NDP won’t work correctly atm (for example on a fix see cdc_mbim.c)

//Markus - The panama-hat hacker

-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/libqmi-devel/attachments/20150702/f35f05a0/attachment.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: qmi_raw_ip_wwan.c
Type: application/octet-stream
Size: 13791 bytes
Desc: not available
URL: <http://lists.freedesktop.org/archives/libqmi-devel/attachments/20150702/f35f05a0/attachment.obj>
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.freedesktop.org/archives/libqmi-devel/attachments/20150702/f35f05a0/attachment-0001.html>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: signature.asc
Type: application/pgp-signature
Size: 186 bytes
Desc: Message signed with OpenPGP using GPGMail
URL: <http://lists.freedesktop.org/archives/libqmi-devel/attachments/20150702/f35f05a0/attachment.sig>