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| author | David S. Miller <davem@davemloft.net> | 2014-05-13 18:02:49 -0400 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2014-05-13 18:02:49 -0400 |
| commit | 87e067cda6df60b55cea0239c2f3cee81e9f46df (patch) | |
| tree | 3e8575e2c828f437ac0fbf9e65555218dee9e3c9 | |
| parent | ae8b42c6fc37ca1b7eb30898f5a65196bbb47291 (diff) | |
| parent | 5a45e57a96dd0e42f1615630c26b4217e78a8908 (diff) | |
| download | linux-87e067cda6df60b55cea0239c2f3cee81e9f46df.tar.bz2 | |
Merge branch 'arc_emac-next'
Beniamino Galvani says:
====================
arc_emac: promiscuous/multicast mode and netpoll support
These patches add support for promiscuous mode, multicast filtering
and netpoll to the ARC EMAC driver.
They were both tested on a Radxa Rock board which uses a ARC EMAC IP
core integrated in the Rockchip RK3188 SoC.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
| -rw-r--r-- | drivers/net/ethernet/arc/emac_main.c | 49 |
1 files changed, 49 insertions, 0 deletions
diff --git a/drivers/net/ethernet/arc/emac_main.c b/drivers/net/ethernet/arc/emac_main.c index d647a7d115ac..18e2faccebb0 100644 --- a/drivers/net/ethernet/arc/emac_main.c +++ b/drivers/net/ethernet/arc/emac_main.c @@ -13,6 +13,7 @@ * Vineet Gupta */ +#include <linux/crc32.h> #include <linux/etherdevice.h> #include <linux/interrupt.h> #include <linux/io.h> @@ -362,6 +363,15 @@ static irqreturn_t arc_emac_intr(int irq, void *dev_instance) return IRQ_HANDLED; } +#ifdef CONFIG_NET_POLL_CONTROLLER +static void arc_emac_poll_controller(struct net_device *dev) +{ + disable_irq(dev->irq); + arc_emac_intr(dev->irq, dev); + enable_irq(dev->irq); +} +#endif + /** * arc_emac_open - Open the network device. * @ndev: Pointer to the network device. @@ -451,6 +461,41 @@ static int arc_emac_open(struct net_device *ndev) } /** + * arc_emac_set_rx_mode - Change the receive filtering mode. + * @ndev: Pointer to the network device. + * + * This function enables/disables promiscuous or all-multicast mode + * and updates the multicast filtering list of the network device. + */ +static void arc_emac_set_rx_mode(struct net_device *ndev) +{ + struct arc_emac_priv *priv = netdev_priv(ndev); + + if (ndev->flags & IFF_PROMISC) { + arc_reg_or(priv, R_CTRL, PROM_MASK); + } else { + arc_reg_clr(priv, R_CTRL, PROM_MASK); + + if (ndev->flags & IFF_ALLMULTI) { + arc_reg_set(priv, R_LAFL, ~0); + arc_reg_set(priv, R_LAFH, ~0); + } else { + struct netdev_hw_addr *ha; + unsigned int filter[2] = { 0, 0 }; + int bit; + + netdev_for_each_mc_addr(ha, ndev) { + bit = ether_crc_le(ETH_ALEN, ha->addr) >> 26; + filter[bit >> 5] |= 1 << (bit & 31); + } + + arc_reg_set(priv, R_LAFL, filter[0]); + arc_reg_set(priv, R_LAFH, filter[1]); + } + } +} + +/** * arc_emac_stop - Close the network device. * @ndev: Pointer to the network device. * @@ -620,6 +665,10 @@ static const struct net_device_ops arc_emac_netdev_ops = { .ndo_start_xmit = arc_emac_tx, .ndo_set_mac_address = arc_emac_set_address, .ndo_get_stats = arc_emac_stats, + .ndo_set_rx_mode = arc_emac_set_rx_mode, +#ifdef CONFIG_NET_POLL_CONTROLLER + .ndo_poll_controller = arc_emac_poll_controller, +#endif }; static int arc_emac_probe(struct platform_device *pdev) |