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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>
This commit is contained in:
Marc Zyngier 2014-04-11 10:46:17 +01:00 committed by David S. Miller
parent 0af764e3f7
commit cec9ae50cc
1 changed files with 21 additions and 9 deletions
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30
drivers/net/ethernet/allwinner/sun4i-emac.c
View File

@ -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,