On 04/23/2015 01:18 AM, David Miller wrote:
Hmm, I've been digging in the net core, and was unable to see where TX skb's get their NET_IP_ALIGN bytes reserved. Have I missed something? Probably need to print out skb's fields...
NET_IP_ALIGN is for receive, not transmit.
But when I print 'skb->data' from the ndo_start_xmit() method (in the 'sh_eth' driver), all addresses end with 2, so it looks like NET_IP_ALIGN gets added somewhere...
It's the IPV4 header which is 4 byte aligned, then the ethernet header is pushed which is 14 bytes.
Sigh... I'm seeing no way out of that then, only copying. :-( WBR, Sergei -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
