HSD #16018467647: net: stmmac: xgmac: Support L3L4 filter count > 8 (#107)

Enabled support for L3L4 filter count > 8.

Signed-off-by: G Thomas, Rohan <rohan.g.thomas@intel.com>

Author: rohangt07

drivers/net/ethernet/stmicro/stmmac/dwxgmac2_dma.c

@@ -397,6 +397,11 @@ static int dwxgmac2_get_hw_feature(void __iomem *ioaddr,
 	/* MAC HW feature 1 */
 	hw_cap = readl(ioaddr + XGMAC_HW_FEATURE1);
 	dma_cap->l3l4fnum = (hw_cap & XGMAC_HWFEAT_L3L4FNUM) >> 27;
+	if (dma_cap->l3l4fnum > 9)
+		dma_cap->l3l4fnum = 32;
+	else if (dma_cap->l3l4fnum > 8)
+		dma_cap->l3l4fnum = 16;
+
 	dma_cap->hash_tb_sz = (hw_cap & XGMAC_HWFEAT_HASHTBLSZ) >> 24;
 	dma_cap->rssen = (hw_cap & XGMAC_HWFEAT_RSSEN) >> 20;
 	dma_cap->tsoen = (hw_cap & XGMAC_HWFEAT_TSOEN) >> 18;