util: add performance characteristics feature decode function

Decodes the feature command dword 11 fields values.

Signed-off-by: Tokunori Ikegami <[email protected]>

Author: ikegami-t

src/nvme/util.h

@@ -448,6 +448,15 @@ static inline void nvme_feature_decode_endurance_group_event_config(__u32 value,
 	*endgcw	= NVME_FEAT_EG_EGCW(value);
 }
 
+#define NVME_FEAT_PERFC_ATTRI(v) NVME_GET(v, FEAT_PERFC_ATTRI)
+#define NVME_FEAT_PERFC_RVSPA(v) NVME_GET(v, FEAT_PERFC_RVSPA)
+
+static inline void nvme_feature_decode_perf_characteristics(__u32 value, __u8 *attri, bool *rvspa)
+{
+	*attri = NVME_FEAT_PERFC_ATTRI(value);
+	*rvspa = NVME_FEAT_PERFC_RVSPA(value);
+}
+
 #define NVME_FEAT_SPM_PBSLC(v)		NVME_GET(v, FEAT_SPM_PBSLC)
 
 static inline void nvme_feature_decode_software_progress_marker(__u32 value,