diff options
| author | Sergei Antonov <saproj@gmail.com> | 2023-08-08 15:43:07 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2023-08-11 06:58:31 +0100 |
| commit | 7a1c38215820edfcd7c3a2523f4fd385f4e482d6 (patch) | |
| tree | 7c68dc257c310f6f3c342287042ad2d148a4e0e4 /drivers/net/ethernet/faraday/ftmac100.c | |
| parent | 6231e47b6fadf42da2e7a45b8272e80aed53c444 (diff) | |
net: ftmac100: add multicast filtering possibility
If netdev_mc_count() is not zero and not IFF_ALLMULTI, filter
incoming multicast packets. The chip has a Multicast Address Hash Table
for allowed multicast addresses, so we fill it.
Implement .ndo_set_rx_mode and recalculate multicast hash table. Also
observe change of IFF_PROMISC and IFF_ALLMULTI netdev flags.
Signed-off-by: Sergei Antonov <saproj@gmail.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/faraday/ftmac100.c')
| -rw-r--r-- | drivers/net/ethernet/faraday/ftmac100.c | 50 |
1 files changed, 45 insertions, 5 deletions
diff --git a/drivers/net/ethernet/faraday/ftmac100.c b/drivers/net/ethernet/faraday/ftmac100.c index 139fe66f8bcd..183069581bc0 100644 --- a/drivers/net/ethernet/faraday/ftmac100.c +++ b/drivers/net/ethernet/faraday/ftmac100.c @@ -149,6 +149,40 @@ static void ftmac100_set_mac(struct ftmac100 *priv, const unsigned char *mac) iowrite32(laddr, priv->base + FTMAC100_OFFSET_MAC_LADR); } +static void ftmac100_setup_mc_ht(struct ftmac100 *priv) +{ + struct netdev_hw_addr *ha; + u64 maht = 0; /* Multicast Address Hash Table */ + + netdev_for_each_mc_addr(ha, priv->netdev) { + u32 hash = ether_crc(ETH_ALEN, ha->addr) >> 26; + + maht |= BIT_ULL(hash); + } + + iowrite32(lower_32_bits(maht), priv->base + FTMAC100_OFFSET_MAHT0); + iowrite32(upper_32_bits(maht), priv->base + FTMAC100_OFFSET_MAHT1); +} + +static void ftmac100_set_rx_bits(struct ftmac100 *priv, unsigned int *maccr) +{ + struct net_device *netdev = priv->netdev; + + /* Clear all */ + *maccr &= ~(FTMAC100_MACCR_RCV_ALL | FTMAC100_MACCR_RX_MULTIPKT | + FTMAC100_MACCR_HT_MULTI_EN); + + /* Set the requested bits */ + if (netdev->flags & IFF_PROMISC) + *maccr |= FTMAC100_MACCR_RCV_ALL; + if (netdev->flags & IFF_ALLMULTI) + *maccr |= FTMAC100_MACCR_RX_MULTIPKT; + else if (netdev_mc_count(netdev)) { + *maccr |= FTMAC100_MACCR_HT_MULTI_EN; + ftmac100_setup_mc_ht(priv); + } +} + #define MACCR_ENABLE_ALL (FTMAC100_MACCR_XMT_EN | \ FTMAC100_MACCR_RCV_EN | \ FTMAC100_MACCR_XDMA_EN | \ @@ -182,11 +216,7 @@ static int ftmac100_start_hw(struct ftmac100 *priv) if (netdev->mtu > ETH_DATA_LEN) maccr |= FTMAC100_MACCR_RX_FTL; - /* Add other bits as needed */ - if (netdev->flags & IFF_PROMISC) - maccr |= FTMAC100_MACCR_RCV_ALL; - if (netdev->flags & IFF_ALLMULTI) - maccr |= FTMAC100_MACCR_RX_MULTIPKT; + ftmac100_set_rx_bits(priv, &maccr); iowrite32(maccr, priv->base + FTMAC100_OFFSET_MACCR); return 0; @@ -1067,6 +1097,15 @@ static int ftmac100_change_mtu(struct net_device *netdev, int mtu) return 0; } +static void ftmac100_set_rx_mode(struct net_device *netdev) +{ + struct ftmac100 *priv = netdev_priv(netdev); + unsigned int maccr = ioread32(priv->base + FTMAC100_OFFSET_MACCR); + + ftmac100_set_rx_bits(priv, &maccr); + iowrite32(maccr, priv->base + FTMAC100_OFFSET_MACCR); +} + static const struct net_device_ops ftmac100_netdev_ops = { .ndo_open = ftmac100_open, .ndo_stop = ftmac100_stop, @@ -1075,6 +1114,7 @@ static const struct net_device_ops ftmac100_netdev_ops = { .ndo_validate_addr = eth_validate_addr, .ndo_eth_ioctl = ftmac100_do_ioctl, .ndo_change_mtu = ftmac100_change_mtu, + .ndo_set_rx_mode = ftmac100_set_rx_mode, }; /****************************************************************************** |