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Subject[PATCH 5.1 076/121] net: phylink: avoid reducing support mask
Date
[ Upstream commit 77316763321ee4050f0576ffd472183aa90dcb30 ]

Avoid reducing the support mask as a result of the interface type
selected for SFP modules, or when setting the link settings through
ethtool - this should only change when the supported link modes of
the hardware combination change.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
---
drivers/net/phy/phylink.c | 13 +++++++++----
1 file changed, 9 insertions(+), 4 deletions(-)

diff --git a/drivers/net/phy/phylink.c b/drivers/net/phy/phylink.c
index efa31fcda505..611dfc3d89a0 100644
--- a/drivers/net/phy/phylink.c
+++ b/drivers/net/phy/phylink.c
@@ -1080,6 +1080,7 @@ EXPORT_SYMBOL_GPL(phylink_ethtool_ksettings_get);
int phylink_ethtool_ksettings_set(struct phylink *pl,
const struct ethtool_link_ksettings *kset)
{
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(support);
struct ethtool_link_ksettings our_kset;
struct phylink_link_state config;
int ret;
@@ -1090,11 +1091,12 @@ int phylink_ethtool_ksettings_set(struct phylink *pl,
kset->base.autoneg != AUTONEG_ENABLE)
return -EINVAL;

+ linkmode_copy(support, pl->supported);
config = pl->link_config;

/* Mask out unsupported advertisements */
linkmode_and(config.advertising, kset->link_modes.advertising,
- pl->supported);
+ support);

/* FIXME: should we reject autoneg if phy/mac does not support it? */
if (kset->base.autoneg == AUTONEG_DISABLE) {
@@ -1104,7 +1106,7 @@ int phylink_ethtool_ksettings_set(struct phylink *pl,
* duplex.
*/
s = phy_lookup_setting(kset->base.speed, kset->base.duplex,
- pl->supported, false);
+ support, false);
if (!s)
return -EINVAL;

@@ -1133,7 +1135,7 @@ int phylink_ethtool_ksettings_set(struct phylink *pl,
__set_bit(ETHTOOL_LINK_MODE_Autoneg_BIT, config.advertising);
}

- if (phylink_validate(pl, pl->supported, &config))
+ if (phylink_validate(pl, support, &config))
return -EINVAL;

/* If autonegotiation is enabled, we must have an advertisement */
@@ -1583,6 +1585,7 @@ static int phylink_sfp_module_insert(void *upstream,
{
struct phylink *pl = upstream;
__ETHTOOL_DECLARE_LINK_MODE_MASK(support) = { 0, };
+ __ETHTOOL_DECLARE_LINK_MODE_MASK(support1);
struct phylink_link_state config;
phy_interface_t iface;
int ret = 0;
@@ -1610,6 +1613,8 @@ static int phylink_sfp_module_insert(void *upstream,
return ret;
}

+ linkmode_copy(support1, support);
+
iface = sfp_select_interface(pl->sfp_bus, id, config.advertising);
if (iface == PHY_INTERFACE_MODE_NA) {
netdev_err(pl->netdev,
@@ -1619,7 +1624,7 @@ static int phylink_sfp_module_insert(void *upstream,
}

config.interface = iface;
- ret = phylink_validate(pl, support, &config);
+ ret = phylink_validate(pl, support1, &config);
if (ret) {
netdev_err(pl->netdev, "validation of %s/%s with support %*pb failed: %d\n",
phylink_an_mode_str(MLO_AN_INBAND),
--
2.20.1


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