linux_dsm_epyc7002/arch/s390/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
..
bpf_jit_comp.c bpf: xdp: Allow head adjustment in XDP prog 2016-12-08 14:25:13 -05:00
bpf_jit.h s390/bpf: fix recache skb->data/hlen for skb_vlan_push/pop 2016-05-19 09:14:27 +02:00
bpf_jit.S s390/bpf: Add s390x eBPF JIT compiler backend 2015-04-15 12:23:49 +02:00
Makefile s390/bpf,jit: BPF Just In Time compiler for s390 2012-09-26 15:44:49 +02:00