X-Git-Url: http://git.droids-corp.org/?a=blobdiff_plain;f=drivers%2Fcommon%2Fsfc_efx%2Fbase%2Fefx_mae.c;h=b1e4b98184dd130a11d44af6d65f6d5df346dfa7;hb=672386c1e9e1f64f7aa3b1360ad22dc737ea8d72;hp=eb91753ec583cca28c31f2b673760b5fa4cc58c8;hpb=76631541aa2de49562e262af085f9e4afdeb1baf;p=dpdk.git

diff --git a/drivers/common/sfc_efx/base/efx_mae.c b/drivers/common/sfc_efx/base/efx_mae.c
index eb91753ec5..b1e4b98184 100644
--- a/drivers/common/sfc_efx/base/efx_mae.c
+++ b/drivers/common/sfc_efx/base/efx_mae.c
@@ -1,7 +1,6 @@
 /* SPDX-License-Identifier: BSD-3-Clause
  *
- * Copyright(c) 2019 Xilinx, Inc. All rights reserved.
- * All rights reserved.
+ * Copyright(c) 2019-2021 Xilinx, Inc.
  */
 
 #include "efx.h"
@@ -690,23 +689,49 @@ efx_mae_match_spec_field_set(
 		goto fail2;
 	}
 
-	if (value_size != descp->emmd_value_size) {
+	if (descp->emmd_mask_size == 0) {
+		/* The ID points to a gap in the array of field descriptors. */
 		rc = EINVAL;
 		goto fail3;
 	}
 
-	if (mask_size != descp->emmd_mask_size) {
+	if (value_size != descp->emmd_value_size) {
 		rc = EINVAL;
 		goto fail4;
 	}
 
+	if (mask_size != descp->emmd_mask_size) {
+		rc = EINVAL;
+		goto fail5;
+	}
+
 	if (descp->emmd_endianness == EFX_MAE_FIELD_BE) {
+		unsigned int i;
+
 		/*
 		 * The mask/value are in network (big endian) order.
 		 * The MCDI request field is also big endian.
 		 */
-		memcpy(mvp + descp->emmd_value_offset, value, value_size);
-		memcpy(mvp + descp->emmd_mask_offset, mask, mask_size);
+
+		EFSYS_ASSERT3U(value_size, ==, mask_size);
+
+		for (i = 0; i < value_size; ++i) {
+			uint8_t *v_bytep = mvp + descp->emmd_value_offset + i;
+			uint8_t *m_bytep = mvp + descp->emmd_mask_offset + i;
+
+			/*
+			 * Apply the mask (which may be all-zeros) to the value.
+			 *
+			 * If this API is provided with some value to set for a
+			 * given field in one specification and with some other
+			 * value to set for this field in another specification,
+			 * then, if the two masks are all-zeros, the field will
+			 * avoid being counted as a mismatch when comparing the
+			 * specifications using efx_mae_match_specs_equal() API.
+			 */
+			*v_bytep = value[i] & mask[i];
+			*m_bytep = mask[i];
+		}
 	} else {
 		efx_dword_t dword;
 
@@ -741,6 +766,8 @@ efx_mae_match_spec_field_set(
 
 	return (0);
 
+fail5:
+	EFSYS_PROBE(fail5);
 fail4:
 	EFSYS_PROBE(fail4);
 fail3: