linux/arch/powerpc/net
Martin KaFai Lau 17bedab272 bpf: xdp: Allow head adjustment in XDP prog
This patch allows XDP prog to extend/remove the packet
data at the head (like adding or removing header).  It is
done by adding a new XDP helper bpf_xdp_adjust_head().

It also renames bpf_helper_changes_skb_data() to
bpf_helper_changes_pkt_data() to better reflect
that XDP prog does not work on skb.

This patch adds one "xdp_adjust_head" bit to bpf_prog for the
XDP-capable driver to check if the XDP prog requires
bpf_xdp_adjust_head() support.  The driver can then decide
to error out during XDP_SETUP_PROG.

Signed-off-by: Martin KaFai Lau <kafai@fb.com>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Acked-by: John Fastabend <john.r.fastabend@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2016-12-08 14:25:13 -05:00
..
Makefile powerpc/ebpf/jit: Implement JIT compiler for extended BPF 2016-06-24 15:17:57 +10:00
bpf_jit.h powerpc/bpf: Implement support for tail calls 2016-10-04 20:33:19 +11:00
bpf_jit32.h powerpc/bpf/jit: Isolate classic BPF JIT specifics into a separate header 2016-06-24 15:15:51 +10:00
bpf_jit64.h powerpc/bpf: Add support for bpf constant blinding 2016-10-04 20:33:20 +11:00
bpf_jit_asm.S powerpc/bpf/jit: Isolate classic BPF JIT specifics into a separate header 2016-06-24 15:15:51 +10:00
bpf_jit_asm64.S powerpc/ebpf/jit: Implement JIT compiler for extended BPF 2016-06-24 15:17:57 +10:00
bpf_jit_comp.c powerpc/bpf/jit: Isolate classic BPF JIT specifics into a separate header 2016-06-24 15:15:51 +10:00
bpf_jit_comp64.c bpf: xdp: Allow head adjustment in XDP prog 2016-12-08 14:25:13 -05:00