From: Hadar Hen Zion <had...@dev.mellanox.co.il> Date: Tue, 26 Jul 2016 13:30:46 +0300
> In the default case eth_get_headlen() won't be called, it will happen > only if PF administrator changes the mode from default to L4. > > In L4 mode, we need to copy all the packet headers including L4, do > you know of a better/cheaper way for doing that? You can just look straight at the ethernet header in this context. eth_get_headlen() is expensive and has a complete header parser. It is meant to be used when none of the SKB context state has been setup yet (early RX processing before SKB is allocated, for example).
