uapi: update bpf.h

Minor comment from upstream

Signed-off-by: Stephen Hemminger <stephen@networkplumber.org>

diff --git a/include/uapi/linux/bpf.h b/include/uapi/linux/bpf.h
index 00d05b86c90ca1a882462968cbfb16086473e21a..2574ea7a04404a95840621fa9073aa7b4e633631 100644 (file)
--- a/include/uapi/linux/bpf.h
+++ b/include/uapi/linux/bpf.h
@@ -4968,6 +4968,9 @@ union bpf_attr {
  *             the netns switch takes place from ingress to ingress without
  *             going through the CPU's backlog queue.
  *
+ *             *skb*\ **->mark** and *skb*\ **->tstamp** are not cleared during
+ *             the netns switch.
+ *
  *             The *flags* argument is reserved and must be 0. The helper is
  *             currently only supported for tc BPF program types at the
  *             ingress hook and for veth and netkit target device types. The