[RFC PATCH net-next 0/6] seccomp filter JIT

Xi Wang
2013-04-26T07:51:40Z

This patchset brings JIT support to seccomp filters for x86_64 and ARM.
It is against the net-next tree.

The current BPF JIT interface only accepts sk_filter, not seccomp_filter.
Patch 1/6 refactors the interface to make it more general.

With the refactored interface, patches 2/6 and 3/6 implement the seccomp
BPF_S_ANC_SECCOMP_LD_W instruction in x86 & ARM JIT.

Status:

* x86_64 & ARM: JIT tested with seccomp examples.

* powerpc [4/6]: no seccomp change - compile checked.

* sparc [5/6] & s390 [6/6]: no seccomp change - untested.

Sorry I have no sparc or s390 build environment here. Can someone help
check 5/6 and 6/6? Thanks.

Xi Wang (6):
filter: refactor BPF JIT for seccomp filters
x86: bpf_jit_comp: support BPF_S_ANC_SECCOMP_LD_W instruction
ARM: net: bpf_jit_32: support BPF_S_ANC_SECCOMP_LD_W instruction
PPC: net: bpf_jit_comp: refactor the BPF JIT interface
sparc: bpf_jit_comp: refactor the BPF JIT interface
s390/bpf,jit: refactor the BPF JIT interface

arch/arm/net/bpf_jit_32.c | 64 +++++++++++++++++++++++++----------------
arch/powerpc/net/bpf_jit_comp.c | 36 +++++++++++------------
arch/s390/net/bpf_jit_comp.c | 31 ++++++++++----------
arch/sparc/net/bpf_jit_comp.c | 22 +++++++-------
arch/x86/net/bpf_jit_comp.c | 38 ++++++++++++++++--------
include/linux/filter.h | 16 +++++++----
kernel/seccomp.c | 6 +++-
net/core/filter.c | 6 ++--
8 files changed, 127 insertions(+), 92 deletions(-)

--
1.8.1.2