Commit 775dd682 authored by Beniamino Galvani's avatar Beniamino Galvani Committed by David S. Miller

arc_emac: implement promiscuous mode and multicast filtering

This patch implements the set_rx_mode function to enable/disable
promiscuous or all-multicast modes and to update the multicast
filtering list of the device.
Signed-off-by: default avatarBeniamino Galvani <b.galvani@gmail.com>
Signed-off-by: default avatarDavid S. Miller <davem@davemloft.net>
parent ae8b42c6
...@@ -13,6 +13,7 @@ ...@@ -13,6 +13,7 @@
* Vineet Gupta * Vineet Gupta
*/ */
#include <linux/crc32.h>
#include <linux/etherdevice.h> #include <linux/etherdevice.h>
#include <linux/interrupt.h> #include <linux/interrupt.h>
#include <linux/io.h> #include <linux/io.h>
...@@ -450,6 +451,41 @@ static int arc_emac_open(struct net_device *ndev) ...@@ -450,6 +451,41 @@ static int arc_emac_open(struct net_device *ndev)
return 0; return 0;
} }
/**
* 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. * arc_emac_stop - Close the network device.
* @ndev: Pointer to the network device. * @ndev: Pointer to the network device.
...@@ -620,6 +656,7 @@ static const struct net_device_ops arc_emac_netdev_ops = { ...@@ -620,6 +656,7 @@ static const struct net_device_ops arc_emac_netdev_ops = {
.ndo_start_xmit = arc_emac_tx, .ndo_start_xmit = arc_emac_tx,
.ndo_set_mac_address = arc_emac_set_address, .ndo_set_mac_address = arc_emac_set_address,
.ndo_get_stats = arc_emac_stats, .ndo_get_stats = arc_emac_stats,
.ndo_set_rx_mode = arc_emac_set_rx_mode,
}; };
static int arc_emac_probe(struct platform_device *pdev) static int arc_emac_probe(struct platform_device *pdev)
......
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