Re: [v3, PATCH] net: stmmac: add support for hash table size 128/256 in dwmac4

On Tue, May 28, 2019 at 09:52:49AM +0800, biao huang wrote:

Dear David,

On Mon, 2019-05-27 at 10:08 -0700, David Miller wrote:

quoted

From: Biao Huang <redacted>
Date: Mon, 27 May 2019 11:14:27 +0800

quoted

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
index 5e98da4..029a3db 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c

@@ -403,41 +403,50 @@ static void dwmac4_set_filter(struct mac_device_info *hw,
 			      struct net_device *dev)
 {
 	void __iomem *ioaddr = (void __iomem *)dev->base_addr;
-	unsigned int value = 0;
+	unsigned int value;
+	int numhashregs = (hw->multicast_filter_bins >> 5);
+	int mcbitslog2 = hw->mcast_bits_log2;
+	int i;

Please retain the reverse christmas tree ordering here.

I'm a little confused about the reverse xmas tree ordering.

should I reorder them only according to the total length like this:

	void __iomem *ioaddr = (void __iomem *)dev->base_addr;
	int numhashregs = (hw->multicast_filter_bins >> 5);
	int mcbitslog2 = hw->mcast_bits_log2;
	unsigned int value;
	int i;

Yes.
	Andrew