From: David Woodhouse <dw...@infradead.org> Date: Wed, 16 Sep 2015 12:35:00 +0100
> A comment in include/linux/skbuff.h says that: > > * Various parts of the networking layer expect at least 32 bytes of > * headroom, you should not reduce this. > > This was demonstrated by a panic when handling fragmented IPv6 packets: > http://marc.info/?l=linux-netdev&m=144236093519172&w=2 > > It's not entirely clear if that comment is still valid ― and if it is, > perhaps netif_rx() ought to be enforcing it with a warning. > > But either way, it is rather stupid from a performance point of view > for us to be receiving packets into a buffer which doesn't have enough > room to prepend an Ethernet header ― it means that *every* incoming > packet is going to be need to be reallocated. So let's fix that. > > Signed-off-by: David Woodhouse <david.woodho...@intel.com> Applied, thanks David. -- To unsubscribe from this list: send the line "unsubscribe netdev" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
