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| author | Marc Zyngier <marc.zyngier@arm.com> | 2014-04-11 10:46:17 +0100 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-04-12 01:59:38 -0400 |
| commit | cec9ae50ccb1491efee90dc8e9998e29e43652b6 (patch) | |
| tree | a22563a221ae67e36797ac16af46403e60396df5 /drivers | |
| parent | 0af764e3f79afe7c758856a2a9376e8ee4f812d7 (diff) | |
| download | linux-cec9ae50ccb1491efee90dc8e9998e29e43652b6.tar.gz linux-cec9ae50ccb1491efee90dc8e9998e29e43652b6.tar.bz2 linux-cec9ae50ccb1491efee90dc8e9998e29e43652b6.zip | |
net: sun4i-emac: add promiscuous support
The sun4i-emac driver is rather primitive, and doesn't support
promiscuous mode. This makes usage such as bridging impossible,
which is a shame on virtualization capable HW such as the
Allwinner A20.
The fix is fairly simple: move the RX setup code to the ndo_set_rx_mode
vector, and add the required HW configuration when IFF_PROMISC is passed
by the core code.
This has been tested on a generic A20 box running a few virtual
machines hanging off a bridge with the EMAC chip as the link to the
outside world.
Cc: Stefan Roese <sr@denx.de>
Cc: Maxime Ripard <maxime.ripard@free-electrons.com>
Signed-off-by: Marc Zyngier <marc.zyngier@arm.com>
Acked-by: Stefan Roese <sr@denx.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/net/ethernet/allwinner/sun4i-emac.c | 30 |
1 files changed, 21 insertions, 9 deletions
diff --git a/drivers/net/ethernet/allwinner/sun4i-emac.c b/drivers/net/ethernet/allwinner/sun4i-emac.c index fcaeeb8a4929..28460676b8ca 100644 --- a/drivers/net/ethernet/allwinner/sun4i-emac.c +++ b/drivers/net/ethernet/allwinner/sun4i-emac.c @@ -268,15 +268,6 @@ static unsigned int emac_setup(struct net_device *ndev) writel(reg_val | EMAC_TX_MODE_ABORTED_FRAME_EN, db->membase + EMAC_TX_MODE_REG); - /* set up RX */ - reg_val = readl(db->membase + EMAC_RX_CTL_REG); - - writel(reg_val | EMAC_RX_CTL_PASS_LEN_OOR_EN | - EMAC_RX_CTL_ACCEPT_UNICAST_EN | EMAC_RX_CTL_DA_FILTER_EN | - EMAC_RX_CTL_ACCEPT_MULTICAST_EN | - EMAC_RX_CTL_ACCEPT_BROADCAST_EN, - db->membase + EMAC_RX_CTL_REG); - /* set MAC */ /* set MAC CTL0 */ reg_val = readl(db->membase + EMAC_MAC_CTL0_REG); @@ -309,6 +300,26 @@ static unsigned int emac_setup(struct net_device *ndev) return 0; } +static void emac_set_rx_mode(struct net_device *ndev) +{ + struct emac_board_info *db = netdev_priv(ndev); + unsigned int reg_val; + + /* set up RX */ + reg_val = readl(db->membase + EMAC_RX_CTL_REG); + + if (ndev->flags & IFF_PROMISC) + reg_val |= EMAC_RX_CTL_PASS_ALL_EN; + else + reg_val &= ~EMAC_RX_CTL_PASS_ALL_EN; + + writel(reg_val | EMAC_RX_CTL_PASS_LEN_OOR_EN | + EMAC_RX_CTL_ACCEPT_UNICAST_EN | EMAC_RX_CTL_DA_FILTER_EN | + EMAC_RX_CTL_ACCEPT_MULTICAST_EN | + EMAC_RX_CTL_ACCEPT_BROADCAST_EN, + db->membase + EMAC_RX_CTL_REG); +} + static unsigned int emac_powerup(struct net_device *ndev) { struct emac_board_info *db = netdev_priv(ndev); @@ -782,6 +793,7 @@ static const struct net_device_ops emac_netdev_ops = { .ndo_stop = emac_stop, .ndo_start_xmit = emac_start_xmit, .ndo_tx_timeout = emac_timeout, + .ndo_set_rx_mode = emac_set_rx_mode, .ndo_do_ioctl = emac_ioctl, .ndo_change_mtu = eth_change_mtu, .ndo_validate_addr = eth_validate_addr, |