From: Sergei Shtylyov <sergei.shtylyov@xxxxxxxxxxxxxxxxxx> Date: Thu, 23 Apr 2015 00:38:56 +0300 > On 04/22/2015 11:42 PM, 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. -- 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
