On Fri, 2016-12-02 at 15:23 -0800, Martin KaFai Lau wrote: > When XDP prog is attached, it is currently limiting > MTU to be FRAG_SZ0 - ETH_HLEN - (2 * VLAN_HLEN) which is 1514 > in x86. > > AFAICT, since mlx4 is doing one page per packet for XDP, > we can at least raise the MTU limitation up to > PAGE_SIZE - ETH_HLEN - (2 * VLAN_HLEN) which this patch is > doing. It will be useful in the next patch which allows > XDP program to extend the packet by adding new header(s). > > Signed-off-by: Martin KaFai Lau <ka...@fb.com> > ---
Have you tested your patch on a host with PAGE_SIZE = 64 KB ? Looks XDP really kills arches with bigger pages :( Thanks.
