KS8842_SWITCH_CTRL_2_OFFSET
sw_cfg(hw, KS8842_SWITCH_CTRL_2_OFFSET, MULTICAST_STORM_DISABLE, 1);
sw_cfg(hw, KS8842_SWITCH_CTRL_2_OFFSET, SWITCH_MIRROR_RX_TX, set);
data = readw(hw->io + KS8842_SWITCH_CTRL_2_OFFSET);
writew(data, hw->io + KS8842_SWITCH_CTRL_2_OFFSET);
data = readw(hw->io + KS8842_SWITCH_CTRL_2_OFFSET);
writew(data, hw->io + KS8842_SWITCH_CTRL_2_OFFSET);