LNK_NEGOTIATE
LNK_10MB | LNK_RX_FLOW_CTL_Y | LNK_NEG_FCTL | LNK_NEGOTIATE;
tmp &= ~LNK_NEGOTIATE;
tmp |= LNK_NEGOTIATE | LNK_1000MB |
if (link & LNK_NEGOTIATE)
link |= LNK_NEGOTIATE;