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authorDaniel Borkmann <daniel@iogearbox.net>2015-09-23 22:56:48 +0300
committerDavid S. Miller <davem@davemloft.net>2015-09-24 00:29:02 +0300
commit5cf8ca0e473df01c9b78894d6e62afa2e1d1166f (patch)
tree65ef1d74e2df607b83bfb534a121342488d22a49 /net/sched
parentef146fa40cc3af1dcb13688f41cc06a9c0deb01c (diff)
downloadlinux-5cf8ca0e473df01c9b78894d6e62afa2e1d1166f.tar.xz
cls_bpf: further limit exec opcodes subset
Jamal suggested to further limit the currently allowed subset of opcodes that may be used by a direct action return code as the intention is not to replace the full action engine, but rather to have a minimal set that can be used in the fast-path on things like ingress for some features that cls_bpf supports. Classifiers can, of course, still be chained together that have direct action mode with those that have a full exec pass. For more complex scenarios that go beyond this minimal set here, the full tcf_exts_exec() path must be used. Suggested-by: Jamal Hadi Salim <jhs@mojatatu.com> Signed-off-by: Daniel Borkmann <daniel@iogearbox.net> Acked-by: Alexei Starovoitov <ast@plumgrid.com> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/sched')
-rw-r--r--net/sched/cls_bpf.c3
1 files changed, 0 insertions, 3 deletions
diff --git a/net/sched/cls_bpf.c b/net/sched/cls_bpf.c
index d6c0a0b44afb..7eeffaf69c75 100644
--- a/net/sched/cls_bpf.c
+++ b/net/sched/cls_bpf.c
@@ -65,11 +65,8 @@ static int cls_bpf_exec_opcode(int code)
{
switch (code) {
case TC_ACT_OK:
- case TC_ACT_RECLASSIFY:
case TC_ACT_SHOT:
- case TC_ACT_PIPE:
case TC_ACT_STOLEN:
- case TC_ACT_QUEUED:
case TC_ACT_REDIRECT:
case TC_ACT_UNSPEC:
return code;