Daniel Borkmann 94caee8c31 ebpf: add sched_act_type and map it to sk_filter's verifier ops ... In order to prepare eBPF support for tc action, we need to add sched_act_type, so that the eBPF verifier is aware of what helper function act_bpf may use, that it can load skb data and read out currently available skb fields. This is bascially analogous to 96be4325f4 ("ebpf: add sched_cls_type and map it to sk_filter's verifier ops"). BPF_PROG_TYPE_SCHED_CLS and BPF_PROG_TYPE_SCHED_ACT need to be separate since both will have a different set of functionality in future (classifier vs action), thus we won't run into ABI troubles when the point in time comes to diverge functionality from the classifier. The future plan for act_bpf would be that it will be able to write into skb->data and alter selected fields mirrored in struct __sk_buff. For an initial support, it's sufficient to map it to sk_filter_ops. Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Cc: Jiri Pirko <jiri@resnulli.us> Reviewed-by: Jiri Pirko <jiri@resnulli.us> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>		2015-03-20 19:10:44 -04:00
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Makefile	ebpf: remove kernel test stubs	2015-03-01 14:05:18 -05:00
arraymap.c	ebpf: constify various function pointer structs	2015-03-01 14:05:18 -05:00
core.c	ebpf: add helper for obtaining current processor id	2015-03-15 21:57:25 -04:00
hashtab.c	ebpf: constify various function pointer structs	2015-03-01 14:05:18 -05:00
helpers.c	ebpf: add helper for obtaining current processor id	2015-03-15 21:57:25 -04:00
syscall.c	bpf: allow extended BPF programs access skb fields	2015-03-15 22:02:28 -04:00
verifier.c	ebpf: add sched_act_type and map it to sk_filter's verifier ops	2015-03-20 19:10:44 -04:00