Re: [PATCH bpf-next v2 02/11] bpf: make generic xdp compatible w/ bpf_xdp_adjust_tail

On Wed, Apr 18, 2018 at 02:48:18PM +0200, Jesper Dangaard Brouer wrote: > On Tue, 17 Apr 2018 21:29:42 -0700 > "Nikita V. Shirokov" wrote: > > > w/ bpf_xdp_adjust_tail helper xdp's data_end pointer could be changed as > > well (only "decrease" of pointer's location is going

Re: [PATCH bpf-next v2 02/11] bpf: make generic xdp compatible w/ bpf_xdp_adjust_tail

On Tue, 17 Apr 2018 21:29:42 -0700 "Nikita V. Shirokov" wrote: > w/ bpf_xdp_adjust_tail helper xdp's data_end pointer could be changed as > well (only "decrease" of pointer's location is going to be supported). > changing of this pointer will change packet's size. > for

[PATCH bpf-next v2 02/11] bpf: make generic xdp compatible w/ bpf_xdp_adjust_tail

w/ bpf_xdp_adjust_tail helper xdp's data_end pointer could be changed as well (only "decrease" of pointer's location is going to be supported). changing of this pointer will change packet's size. for generic XDP we need to reflect this packet's length change by adjusting skb's tail pointer