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sfc: Implement auto-negotiation

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Add infrastructure for auto-negotiation of speed, duplex and flow
control.

When using 10Xpress, auto-negotiate flow control.  While we're
at it, clean up the code to warn when partner is not 10GBASE-T
capable.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings
2008-12-12 21:50:46 -08:00
committed by David S. Miller
parent 177dfcd80f
commit 04cc8cacb0
9 changed files with 479 additions and 161 deletions
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4
drivers/net/sfc/falcon_gmac.c
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@@ -31,8 +31,8 @@ static void falcon_reconfigure_gmac(struct efx_nic *efx)
efx_oword_t reg;
/* Configuration register 1 */
tx_fc = (efx->flow_control & EFX_FC_TX) || !efx->link_fd;
rx_fc = !!(efx->flow_control & EFX_FC_RX);
tx_fc = (efx->link_fc & EFX_FC_TX) || !efx->link_fd;
rx_fc = !!(efx->link_fc & EFX_FC_RX);
loopback = (efx->loopback_mode == LOOPBACK_GMAC);
bytemode = (efx->link_speed == 1000);