NV_PAUSEFRAME_AUTONEG
if (np->autoneg && np->pause_flags & NV_PAUSEFRAME_AUTONEG) {
np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
pause->autoneg = (np->pause_flags & NV_PAUSEFRAME_AUTONEG) != 0;
np->pause_flags |= NV_PAUSEFRAME_AUTONEG;
np->pause_flags &= ~(NV_PAUSEFRAME_AUTONEG|NV_PAUSEFRAME_RX_ENABLE|NV_PAUSEFRAME_TX_ENABLE);
np->pause_flags = NV_PAUSEFRAME_RX_CAPABLE | NV_PAUSEFRAME_RX_REQ | NV_PAUSEFRAME_AUTONEG;