net/xfrm/xfrm_iptfs.c:758: warning: No description found for return value of 'iptfs_input'
net/xfrm/xfrm_iptfs.c:863: warning: No description found for return value of 'iptfs_drop_timer'
net/xfrm/xfrm_iptfs.c:851: warning: No description found for return value of 'iptfs_input'
net/xfrm/xfrm_iptfs.c:956: warning: No description found for return value of 'iptfs_drop_timer'