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net: phylink: require supported_interfaces to be filled

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We have been requiring the supported_interfaces bitmap to be filled in
by MAC drivers that have a mac_select_pcs() method. Now that all MAC
drivers fill in the supported_interfaces bitmap, it is time to enforce
this. We have already required supported_interfaces to be set in order
for optical SFPs to be configured in commit f81fa96d8a ("net: phylink:
use phy_interface_t bitmaps for optical modules").

Refuse phylink creation if supported_interfaces is empty, and remove
code to deal with cases where this mask is empty.

Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/E1q0K1u-006EIP-ET@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
This commit is contained in:
Russell King (Oracle) 2023-05-20 11:41:42 +01:00 • committed by Jakub Kicinski
parent 5859a99b52
commit de5c9bf40c
1 changed files with 11 additions and 15 deletions
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26
drivers/net/phy/phylink.c
View file

@ -712,14 +712,11 @@ static int phylink_validate(struct phylink *pl, unsigned long *supported,
{
const unsigned long *interfaces = pl->config->supported_interfaces;
if (!phy_interface_empty(interfaces)) {
if (state->interface == PHY_INTERFACE_MODE_NA)
return phylink_validate_mask(pl, supported, state,
interfaces);
if (state->interface == PHY_INTERFACE_MODE_NA)
return phylink_validate_mask(pl, supported, state, interfaces);
if (!test_bit(state->interface, interfaces))
return -EINVAL;
}
if (!test_bit(state->interface, interfaces))
return -EINVAL;
return phylink_validate_mac_and_pcs(pl, supported, state);
}
@ -1513,19 +1510,18 @@ struct phylink *phylink_create(struct phylink_config *config,
struct phylink *pl;
int ret;
/* Validate the supplied configuration */
if (phy_interface_empty(config->supported_interfaces)) {
dev_err(config->dev,
"phylink: error: empty supported_interfaces\n");
return ERR_PTR(-EINVAL);
}
if (mac_ops->mac_select_pcs &&
mac_ops->mac_select_pcs(config, PHY_INTERFACE_MODE_NA) !=
ERR_PTR(-EOPNOTSUPP))
using_mac_select_pcs = true;
/* Validate the supplied configuration */
if (using_mac_select_pcs &&
phy_interface_empty(config->supported_interfaces)) {
dev_err(config->dev,
"phylink: error: empty supported_interfaces but mac_select_pcs() method present\n");
return ERR_PTR(-EINVAL);
}
pl = kzalloc(sizeof(*pl), GFP_KERNEL);
if (!pl)
return ERR_PTR(-ENOMEM);