tools/bpf: sync uapi bpf.h for bpf_get_current_cgroup_id() helper

Sync kernel uapi/linux/bpf.h with tools uapi/linux/bpf.h.
Also add the necessary helper define in bpf_helpers.h.

Acked-by: Alexei Starovoitov <ast@kernel.org>
Signed-off-by: Yonghong Song <yhs@fb.com>
Signed-off-by: Alexei Starovoitov <ast@kernel.org>

1 files changed, 7 insertions, 1 deletions

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index f0b6608b1f1c..18712b0dbfe7 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -2070,6 +2070,11 @@ union bpf_attr {
  *              **CONFIG_SOCK_CGROUP_DATA** configuration option.
  *      Return
  *              The id is returned or 0 in case the id could not be retrieved.
+ *
+ * u64 bpf_get_current_cgroup_id(void)
+ *      Return
+ *              A 64-bit integer containing the current cgroup id based
+ *              on the cgroup within which the current task is running.
  */
 #define __BPF_FUNC_MAPPER(FN)           \
         FN(unspec),                     \
@@ -2151,7 +2156,8 @@ union bpf_attr {
         FN(lwt_seg6_action),            \
         FN(rc_repeat),                  \
         FN(rc_keydown),                 \
-        FN(skb_cgroup_id),
+        FN(skb_cgroup_id),              \
+        FN(get_current_cgroup_id),
 
 /* integer value in 'imm' field of BPF_CALL instruction selects which helper
  * function eBPF program intends to call