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mdio: Advertise pause (flow control) settings even if autoneg is off 

Currently, if pause autoneg is off we do not set either pause
advertising flag.  If autonegotiation of speed and duplex settings is
enabled, there is no way for the link partner to distinguish this from
our refusing to use pause frames.

We should instead set the advertising flags according to the forced
mode so that the link partner can follow our lead.  This is consistent
with the behaviour of other drivers.

Signed-off-by: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ben Hutchings 2009-10-12 09:26:17 +00:00 committed by David S. Miller
parent be926fc404
commit 767f4a7ca8
1 changed files with 3 additions and 5 deletions
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8
drivers/net/mdio.c
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@ -344,11 +344,9 @@ void mdio45_ethtool_spauseparam_an(const struct mdio_if_info *mdio,
old_adv = mdio->mdio_read(mdio->dev, mdio->prtad, MDIO_MMD_AN,
MDIO_AN_ADVERTISE);
adv = old_adv & ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM);
if (ecmd->autoneg)
adv |= mii_advertise_flowctrl(
(ecmd->rx_pause ? FLOW_CTRL_RX : 0) |
(ecmd->tx_pause ? FLOW_CTRL_TX : 0));
adv = ((old_adv & ~(ADVERTISE_PAUSE_CAP | ADVERTISE_PAUSE_ASYM)) |
mii_advertise_flowctrl((ecmd->rx_pause ? FLOW_CTRL_RX : 0) |
(ecmd->tx_pause ? FLOW_CTRL_TX : 0)));
if (adv != old_adv) {
mdio->mdio_write(mdio->dev, mdio->prtad, MDIO_MMD_AN,
MDIO_AN_ADVERTISE, adv);