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| author | Daniel Borkmann <daniel@iogearbox.net> | 2016-08-12 22:17:17 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-08-12 21:53:33 -0700 |
| commit | 747ea55e4f78fd980350c39570a986b8c1c3e4aa (patch) | |
| tree | 95db28dc3288ef964ebd07270880233b98ba09a3 /samples | |
| parent | 601bbae0bc10d4306857b93d84240b039b3d9a6c (diff) | |
| download | op-kernel-dev-747ea55e4f78fd980350c39570a986b8c1c3e4aa.zip op-kernel-dev-747ea55e4f78fd980350c39570a986b8c1c3e4aa.tar.gz | |
bpf: fix bpf_skb_in_cgroup helper naming
While hashing out BPF's current_task_under_cgroup helper bits, it came
to discussion that the skb_in_cgroup helper name was suboptimally chosen.
Tejun says:
So, I think in_cgroup should mean that the object is in that
particular cgroup while under_cgroup in the subhierarchy of that
cgroup. Let's rename the other subhierarchy test to under too. I
think that'd be a lot less confusing going forward.
[...]
It's more intuitive and gives us the room to implement the real
"in" test if ever necessary in the future.
Since this touches uapi bits, we need to change this as long as v4.8
is not yet officially released. Thus, change the helper enum and rename
related bits.
Fixes: 4a482f34afcc ("cgroup: bpf: Add bpf_skb_in_cgroup_proto")
Reference: http://patchwork.ozlabs.org/patch/658500/
Suggested-by: Sargun Dhillon <sargun@sargun.me>
Suggested-by: Tejun Heo <tj@kernel.org>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'samples')
| -rw-r--r-- | samples/bpf/bpf_helpers.h | 4 | ||||
| -rw-r--r-- | samples/bpf/test_cgrp2_tc_kern.c | 2 |
2 files changed, 3 insertions, 3 deletions
diff --git a/samples/bpf/bpf_helpers.h b/samples/bpf/bpf_helpers.h index 217c8d507..7927a09 100644 --- a/samples/bpf/bpf_helpers.h +++ b/samples/bpf/bpf_helpers.h @@ -72,8 +72,8 @@ static int (*bpf_l3_csum_replace)(void *ctx, int off, int from, int to, int flag (void *) BPF_FUNC_l3_csum_replace; static int (*bpf_l4_csum_replace)(void *ctx, int off, int from, int to, int flags) = (void *) BPF_FUNC_l4_csum_replace; -static int (*bpf_skb_in_cgroup)(void *ctx, void *map, int index) = - (void *) BPF_FUNC_skb_in_cgroup; +static int (*bpf_skb_under_cgroup)(void *ctx, void *map, int index) = + (void *) BPF_FUNC_skb_under_cgroup; #if defined(__x86_64__) diff --git a/samples/bpf/test_cgrp2_tc_kern.c b/samples/bpf/test_cgrp2_tc_kern.c index 2732c37..10ff734 100644 --- a/samples/bpf/test_cgrp2_tc_kern.c +++ b/samples/bpf/test_cgrp2_tc_kern.c @@ -57,7 +57,7 @@ int handle_egress(struct __sk_buff *skb) bpf_trace_printk(dont_care_msg, sizeof(dont_care_msg), eth->h_proto, ip6h->nexthdr); return TC_ACT_OK; - } else if (bpf_skb_in_cgroup(skb, &test_cgrp2_array_pin, 0) != 1) { + } else if (bpf_skb_under_cgroup(skb, &test_cgrp2_array_pin, 0) != 1) { bpf_trace_printk(pass_msg, sizeof(pass_msg)); return TC_ACT_OK; } else { |
