diff options
| author | Daniel Borkmann <daniel@iogearbox.net> | 2016-09-09 02:45:28 +0200 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2016-09-10 04:36:03 +0200 |
| commit | 6088b5823b4cb132a838878747384cbfb5ce6646 (patch) | |
| tree | 83d13b9cc765fa76212ba29d4eda9723f6c02e5e /kernel/bpf/helpers.c | |
| parent | ip_tunnel: do not clear l4 hashes (diff) | |
| download | linux-6088b5823b4cb132a838878747384cbfb5ce6646.tar.xz linux-6088b5823b4cb132a838878747384cbfb5ce6646.zip | |
bpf: minor cleanups in helpers
Some minor misc cleanups, f.e. use sizeof(__u32) instead of hardcoding
and in __bpf_skb_max_len(), I missed that we always have skb->dev valid
anyway, so we can drop the unneeded test for dev; also few more other
misc bits addressed here.
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>
Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'kernel/bpf/helpers.c')
| -rw-r--r-- | kernel/bpf/helpers.c | 6 |
1 files changed, 3 insertions, 3 deletions
diff --git a/kernel/bpf/helpers.c b/kernel/bpf/helpers.c index 1ea3afba1a4f..6df73bd1ba34 100644 --- a/kernel/bpf/helpers.c +++ b/kernel/bpf/helpers.c @@ -126,7 +126,7 @@ static u64 bpf_get_current_pid_tgid(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5) { struct task_struct *task = current; - if (!task) + if (unlikely(!task)) return -EINVAL; return (u64) task->tgid << 32 | task->pid; @@ -144,12 +144,12 @@ static u64 bpf_get_current_uid_gid(u64 r1, u64 r2, u64 r3, u64 r4, u64 r5) kuid_t uid; kgid_t gid; - if (!task) + if (unlikely(!task)) return -EINVAL; current_uid_gid(&uid, &gid); return (u64) from_kgid(&init_user_ns, gid) << 32 | - from_kuid(&init_user_ns, uid); + from_kuid(&init_user_ns, uid); } const struct bpf_func_proto bpf_get_current_uid_gid_proto = { |