net: stmmac: selftests: Add tests for SA Insertion/Replacement

Add 4 new tests:
	- SA Insertion (register based)
	- SA Insertion (descriptor based)
	- SA Replacament (register based)
	- SA Replacement (descriptor based)
Signed-off-by: Jose Abreu <joabreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/ethernet/stmicro/stmmac/stmmac_selftests.c

@@ -45,6 +45,7 @@ struct stmmac_packet_attrs {
 	int size;
 	int remove_sa;
 	u8 id;
+	int sarc;
 };
 
 static u8 stmmac_test_next_id;
@@ -230,7 +231,10 @@ static int stmmac_test_loopback_validate(struct sk_buff *skb,
 		if (!ether_addr_equal(ehdr->h_dest, tpriv->packet->dst))
 			goto out;
 	}
-	if (tpriv->packet->src) {
+	if (tpriv->packet->sarc) {
+		if (!ether_addr_equal(ehdr->h_source, ehdr->h_dest))
+			goto out;
+	} else if (tpriv->packet->src) {
 		if (!ether_addr_equal(ehdr->h_source, tpriv->packet->src))
 			goto out;
 	}
@@ -1004,6 +1008,82 @@ static int stmmac_test_rxp(struct stmmac_priv *priv)
 }
 #endif
 
+static int stmmac_test_desc_sai(struct stmmac_priv *priv)
+{
+	unsigned char src[ETH_ALEN] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+	struct stmmac_packet_attrs attr = { };
+	int ret;
+
+	attr.remove_sa = true;
+	attr.sarc = true;
+	attr.src = src;
+	attr.dst = priv->dev->dev_addr;
+
+	priv->sarc_type = 0x1;
+
+	ret = __stmmac_test_loopback(priv, &attr);
+
+	priv->sarc_type = 0x0;
+	return ret;
+}
+
+static int stmmac_test_desc_sar(struct stmmac_priv *priv)
+{
+	unsigned char src[ETH_ALEN] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+	struct stmmac_packet_attrs attr = { };
+	int ret;
+
+	attr.sarc = true;
+	attr.src = src;
+	attr.dst = priv->dev->dev_addr;
+
+	priv->sarc_type = 0x2;
+
+	ret = __stmmac_test_loopback(priv, &attr);
+
+	priv->sarc_type = 0x0;
+	return ret;
+}
+
+static int stmmac_test_reg_sai(struct stmmac_priv *priv)
+{
+	unsigned char src[ETH_ALEN] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+	struct stmmac_packet_attrs attr = { };
+	int ret;
+
+	attr.remove_sa = true;
+	attr.sarc = true;
+	attr.src = src;
+	attr.dst = priv->dev->dev_addr;
+
+	if (stmmac_sarc_configure(priv, priv->ioaddr, 0x2))
+		return -EOPNOTSUPP;
+
+	ret = __stmmac_test_loopback(priv, &attr);
+
+	stmmac_sarc_configure(priv, priv->ioaddr, 0x0);
+	return ret;
+}
+
+static int stmmac_test_reg_sar(struct stmmac_priv *priv)
+{
+	unsigned char src[ETH_ALEN] = {0x00, 0x00, 0x00, 0x00, 0x00, 0x00};
+	struct stmmac_packet_attrs attr = { };
+	int ret;
+
+	attr.sarc = true;
+	attr.src = src;
+	attr.dst = priv->dev->dev_addr;
+
+	if (stmmac_sarc_configure(priv, priv->ioaddr, 0x3))
+		return -EOPNOTSUPP;
+
+	ret = __stmmac_test_loopback(priv, &attr);
+
+	stmmac_sarc_configure(priv, priv->ioaddr, 0x0);
+	return ret;
+}
+
 #define STMMAC_LOOPBACK_NONE	0
 #define STMMAC_LOOPBACK_MAC	1
 #define STMMAC_LOOPBACK_PHY	2
@@ -1065,6 +1145,22 @@ static const struct stmmac_test {
 		.name = "Flexible RX Parser   ",
 		.lb = STMMAC_LOOPBACK_PHY,
 		.fn = stmmac_test_rxp,
+	}, {
+		.name = "SA Insertion (desc)  ",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_desc_sai,
+	}, {
+		.name = "SA Replacement (desc)",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_desc_sar,
+	}, {
+		.name = "SA Insertion (reg)  ",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_reg_sai,
+	}, {
+		.name = "SA Replacement (reg)",
+		.lb = STMMAC_LOOPBACK_PHY,
+		.fn = stmmac_test_reg_sar,
 	},
 };