diff options
| author | Benjamin Herrenschmidt <benh@kernel.crashing.org> | 2017-04-18 08:37:00 +1000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2017-04-18 14:11:08 -0400 |
| commit | f48b3c0d5b6ab4d88db75e45e1ea38074e2765c9 (patch) | |
| tree | 523600fa3fe2c76602cd23147de01c985e789a94 /drivers/net/ethernet/faraday | |
| parent | 7c8e5141ca633ae6dc7489dc85cabcfed2144a2d (diff) | |
| download | linux-stable-f48b3c0d5b6ab4d88db75e45e1ea38074e2765c9.tar.gz | |
ftgmac100: Add ndo_set_rx_mode() and support for multicast & promisc
This adds the ndo_set_rx_mode() callback to configure the
multicast filters, promisc and allmulti options.
Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers/net/ethernet/faraday')
| -rw-r--r-- | drivers/net/ethernet/faraday/ftgmac100.c | 52 |
1 files changed, 52 insertions, 0 deletions
diff --git a/drivers/net/ethernet/faraday/ftgmac100.c b/drivers/net/ethernet/faraday/ftgmac100.c index 949b48c0eae6..f4db6e21f5df 100644 --- a/drivers/net/ethernet/faraday/ftgmac100.c +++ b/drivers/net/ethernet/faraday/ftgmac100.c @@ -32,6 +32,7 @@ #include <linux/phy.h> #include <linux/platform_device.h> #include <linux/property.h> +#include <linux/crc32.h> #include <net/ip.h> #include <net/ncsi.h> @@ -99,6 +100,10 @@ struct ftgmac100 { int cur_duplex; bool use_ncsi; + /* Multicast filter settings */ + u32 maht0; + u32 maht1; + /* Flow control settings */ bool tx_pause; bool rx_pause; @@ -266,6 +271,10 @@ static void ftgmac100_init_hw(struct ftgmac100 *priv) /* Write MAC address */ ftgmac100_write_mac_addr(priv, priv->netdev->dev_addr); + /* Write multicast filter */ + iowrite32(priv->maht0, priv->base + FTGMAC100_OFFSET_MAHT0); + iowrite32(priv->maht1, priv->base + FTGMAC100_OFFSET_MAHT1); + /* Configure descriptor sizes and increase burst sizes according * to values in Aspeed SDK. The FIFO arbitration is enabled and * the thresholds set based on the recommended values in the @@ -319,6 +328,12 @@ static void ftgmac100_start_hw(struct ftgmac100 *priv) /* Add other bits as needed */ if (priv->cur_duplex == DUPLEX_FULL) maccr |= FTGMAC100_MACCR_FULLDUP; + if (priv->netdev->flags & IFF_PROMISC) + maccr |= FTGMAC100_MACCR_RX_ALL; + if (priv->netdev->flags & IFF_ALLMULTI) + maccr |= FTGMAC100_MACCR_RX_MULTIPKT; + else if (netdev_mc_count(priv->netdev)) + maccr |= FTGMAC100_MACCR_HT_MULTI_EN; /* Hit the HW */ iowrite32(maccr, priv->base + FTGMAC100_OFFSET_MACCR); @@ -329,6 +344,42 @@ static void ftgmac100_stop_hw(struct ftgmac100 *priv) iowrite32(0, priv->base + FTGMAC100_OFFSET_MACCR); } +static void ftgmac100_calc_mc_hash(struct ftgmac100 *priv) +{ + struct netdev_hw_addr *ha; + + priv->maht1 = 0; + priv->maht0 = 0; + netdev_for_each_mc_addr(ha, priv->netdev) { + u32 crc_val = ether_crc_le(ETH_ALEN, ha->addr); + + crc_val = (~(crc_val >> 2)) & 0x3f; + if (crc_val >= 32) + priv->maht1 |= 1ul << (crc_val - 32); + else + priv->maht0 |= 1ul << (crc_val); + } +} + +static void ftgmac100_set_rx_mode(struct net_device *netdev) +{ + struct ftgmac100 *priv = netdev_priv(netdev); + + /* Setup the hash filter */ + ftgmac100_calc_mc_hash(priv); + + /* Interface down ? that's all there is to do */ + if (!netif_running(netdev)) + return; + + /* Update the HW */ + iowrite32(priv->maht0, priv->base + FTGMAC100_OFFSET_MAHT0); + iowrite32(priv->maht1, priv->base + FTGMAC100_OFFSET_MAHT1); + + /* Reconfigure MACCR */ + ftgmac100_start_hw(priv); +} + static int ftgmac100_alloc_rx_buf(struct ftgmac100 *priv, unsigned int entry, struct ftgmac100_rxdes *rxdes, gfp_t gfp) { @@ -1503,6 +1554,7 @@ static const struct net_device_ops ftgmac100_netdev_ops = { .ndo_validate_addr = eth_validate_addr, .ndo_do_ioctl = ftgmac100_do_ioctl, .ndo_tx_timeout = ftgmac100_tx_timeout, + .ndo_set_rx_mode = ftgmac100_set_rx_mode, }; static int ftgmac100_setup_mdio(struct net_device *netdev) |