net: dsa: bcm_sf2: Use existing shift/masks

Instead of open coding the shift for the IP protocol, IP fragment bit
etc. define and/or use existing constants to that end.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

drivers/net/dsa/bcm_sf2_cfp.c

@@ -189,7 +189,8 @@ static int bcm_sf2_cfp_rule_set(struct dsa_switch *ds, int port,
 	 * Reserved		[1]
 	 * UDF_Valid[8]		[0]
 	 */
-	core_writel(priv, v4_spec->tos << 16 | ip_proto << 8 | ip_frag << 7,
+	core_writel(priv, v4_spec->tos << IPTOS_SHIFT |
+		    ip_proto << IPPROTO_SHIFT | ip_frag << IP_FRAG_SHIFT,
 		    CORE_CFP_DATA_PORT(6));
 
 	/* UDF_Valid[7:0]	[31:24]
@@ -425,8 +426,8 @@ static int bcm_sf2_cfp_rule_get(struct bcm_sf2_priv *priv, int port,
 		return -EINVAL;
 	}
 
-	v4_spec->tos = (reg >> 16) & IPPROTO_MASK;
-	nfc->fs.m_ext.data[0] = cpu_to_be32((reg >> 7) & 1);
+	v4_spec->tos = (reg >> IPTOS_SHIFT) & IPTOS_MASK;
+	nfc->fs.m_ext.data[0] = cpu_to_be32((reg >> IP_FRAG_SHIFT) & 1);
 
 	reg = core_readl(priv, CORE_CFP_DATA_PORT(3));
 	/* src port [15:8] */

drivers/net/dsa/bcm_sf2_regs.h

@@ -302,9 +302,12 @@ enum bcm_sf2_reg_offs {
 /* UDF_DATA7 */
 #define L3_FRAMING_SHIFT		24
 #define L3_FRAMING_MASK			(0x3 << L3_FRAMING_SHIFT)
+#define IPTOS_SHIFT			16
+#define IPTOS_MASK			0xff
 #define IPPROTO_SHIFT			8
 #define IPPROTO_MASK			(0xff << IPPROTO_SHIFT)
-#define IP_FRAG				(1 << 7)
+#define IP_FRAG_SHIFT			7
+#define IP_FRAG				(1 << IP_FRAG_SHIFT)
 
 /* UDF_DATA0 */
 #define  SLICE_VALID			3