refs/heads/bpf_copy_bytes - pub/scm/linux/kernel/git/ast/bpf

commit	ff659aaeb083d0a25727f0c0e37441df57873142	[log] [tgz]
author	Alexei Starovoitov <ast@plumgrid.com>	Sat Apr 11 16:35:42 2015 -0700
committer	Alexei Starovoitov <ast@plumgrid.com>	Sat Apr 11 18:08:59 2015 -0700
tree	26f101adcf0f70e03efcd70448d8acebd4c71699
parent	7f536f90f884307ba7934d1ddfda725c9171a575 [diff]

bpf: add bpf_skb_copy_bytes() helper

Since ingress and egress programs see different skb->data,
add bpf_skb_copy_bytes() helper which is skb->mac_header relative
as a substitute for LD_ABS/LD_IND instructions which are skb->data relative

Fix all other helpers to be skb->mac_header relative

Ensure that mac_header is set before calling into programs

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>

include/uapi/linux/bpf.h[diff]
net/core/filter.c[diff]
net/sched/act_bpf.c[diff]
net/sched/cls_bpf.c[diff]
samples/bpf/bpf_helpers.h[diff]
samples/bpf/tcbpf1_kern.c[diff]

6 files changed

tree: 26f101adcf0f70e03efcd70448d8acebd4c71699