@@ -401,8 +401,11 @@ static void dwmac4_set_filter(struct mac_device_info *hw,
int numhashregs = (hw->multicast_filter_bins >> 5);
int mcbitslog2 = hw->mcast_bits_log2;
unsigned int value;
+ u32 mc_filter[8];
int i;
+ memset(mc_filter, 0, sizeof(mc_filter));
+
value = readl(ioaddr + GMAC_PACKET_FILTER);
value &= ~GMAC_PACKET_FILTER_HMC;
value &= ~GMAC_PACKET_FILTER_HPF;
@@ -416,16 +419,13 @@ static void dwmac4_set_filter(struct mac_device_info *hw,
/* Pass all multi */
value |= GMAC_PACKET_FILTER_PM;
/* Set all the bits of the HASH tab */
- for (i = 0; i < numhashregs; i++)
- writel(0xffffffff, ioaddr + GMAC_HASH_TAB(i));
+ memset(mc_filter, 0xff, sizeof(mc_filter));
} else if (!netdev_mc_empty(dev)) {
struct netdev_hw_addr *ha;
- u32 mc_filter[8];
/* Hash filter for multicast */
value |= GMAC_PACKET_FILTER_HMC;
- memset(mc_filter, 0, sizeof(mc_filter));
netdev_for_each_mc_addr(ha, dev) {
/* The upper n bits of the calculated CRC are used to
* index the contents of the hash table. The number of
@@ -440,10 +440,11 @@ static void dwmac4_set_filter(struct mac_device_info *hw,
*/
mc_filter[bit_nr >> 5] |= (1 << (bit_nr & 0x1f));
}
- for (i = 0; i < numhashregs; i++)
- writel(mc_filter[i], ioaddr + GMAC_HASH_TAB(i));
}
+ for (i = 0; i < numhashregs; i++)
+ writel(mc_filter[i], ioaddr + GMAC_HASH_TAB(i));
+
value |= GMAC_PACKET_FILTER_HPF;
/* Handle multiple unicast addresses */
We need to always update the MAC Hash Filter so that previous entries are invalidated. Found out while running stmmac selftests. Fixes: b8ef7020d6e5 ("net: stmmac: add support for hash table size 128/256 in dwmac4") Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com> --- Cc: Giuseppe Cavallaro <peppe.cavallaro@st.com> Cc: Alexandre Torgue <alexandre.torgue@st.com> Cc: Jose Abreu <joabreu@synopsys.com> Cc: "David S. Miller" <davem@davemloft.net> Cc: Maxime Coquelin <mcoquelin.stm32@gmail.com> Cc: netdev@vger.kernel.org Cc: linux-stm32@st-md-mailman.stormreply.com Cc: linux-arm-kernel@lists.infradead.org Cc: linux-kernel@vger.kernel.org --- drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c | 13 +++++++------ 1 file changed, 7 insertions(+), 6 deletions(-)