[PATCH] lsm: add comment block for security_sk_classify_flow LSM hook

[Khadija Kamran]

security_sk_classify_flow LSM hook has no comment block. Add a comment
block with a brief description of LSM hook and its function parameters.

Signed-off-by: Khadija Kamran <kamrankhadijadj@xxxxxxxxx>
---
 security/security.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/security/security.c b/security/security.c
index d5ff7ff45b77..ffc5519e49cd 100644
--- a/security/security.c
+++ b/security/security.c
@@ -4396,6 +4396,13 @@ void security_sk_clone(const struct sock *sk, struct sock *newsk)
 }
 EXPORT_SYMBOL(security_sk_clone);
 
+/**
+ * security_sk_classify_flow() - Set a flow's secid based on socket
+ * @sk:  original socket
+ * @flic: target flow
+ *
+ * Set the target flow's secid to socket's secid.
+ */
 void security_sk_classify_flow(struct sock *sk, struct flowi_common *flic)
 {
 	call_void_hook(sk_getsecid, sk, &flic->flowic_secid);
-- 
2.34.1