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net: phylink: Add struct phylink_config to PHYLINK API

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The phylink_config structure will encapsulate a pointer to a struct
device and the operation type requested for this instance of PHYLINK.
This patch does not make any functional changes, it just transitions the
PHYLINK internals and all its users to the new API.

A pointer to a phylink_config structure will be passed to
phylink_create() instead of the net_device directly. Also, the same
phylink_config pointer will be passed back to all phylink_mac_ops
callbacks instead of the net_device. Using this mechanism, a PHYLINK
user can get the original net_device using a structure such as
'to_net_dev(config->dev)' or directly the structure containing the
phylink_config using a container_of call.

At the moment, only the PHYLINK_NETDEV is defined as a valid operation
type for PHYLINK. In this mode, a valid reference to a struct device
linked to the original net_device should be passed to PHYLINK through
the phylink_config structure.

This API changes is mainly driven by the necessity of adding a new
operation type in PHYLINK that disconnects the phy_device from the
net_device and also works when the net_device is lacking.

Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Tested-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Ioana Ciornei
2019-05-28 20:38:12 +03:00
committed by David S. Miller
parent 27755ff88c
commit 44cc27e43f
8 changed files with 128 additions and 72 deletions
Download Patch File Download Diff File Expand all files Collapse all files

26
drivers/net/phy/phylink.c
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@@ -41,6 +41,7 @@ struct phylink {
/* private: */
struct net_device *netdev;
const struct phylink_mac_ops *ops;
struct phylink_config *config;
unsigned long phylink_disable_state; /* bitmask of disables */
struct phy_device *phydev;
@@ -111,7 +112,7 @@ static const char *phylink_an_mode_str(unsigned int mode)
static int phylink_validate(struct phylink *pl, unsigned long *supported,
struct phylink_link_state *state)
{
pl->ops->validate(pl->netdev, supported, state);
pl->ops->validate(pl->config, supported, state);
return phylink_is_empty_linkmode(supported) ? -EINVAL : 0;
}
@@ -299,7 +300,7 @@ static void phylink_mac_config(struct phylink *pl,
__ETHTOOL_LINK_MODE_MASK_NBITS, state->advertising,
state->pause, state->link, state->an_enabled);
pl->ops->mac_config(pl->netdev, pl->link_an_mode, state);
pl->ops->mac_config(pl->config, pl->link_an_mode, state);
}
static void phylink_mac_config_up(struct phylink *pl,
@@ -313,12 +314,11 @@ static void phylink_mac_an_restart(struct phylink *pl)
{
if (pl->link_config.an_enabled &&
phy_interface_mode_is_8023z(pl->link_config.interface))
pl->ops->mac_an_restart(pl->netdev);
pl->ops->mac_an_restart(pl->config);
}
static int phylink_get_mac_state(struct phylink *pl, struct phylink_link_state *state)
{
struct net_device *ndev = pl->netdev;
linkmode_copy(state->advertising, pl->link_config.advertising);
linkmode_zero(state->lp_advertising);
@@ -330,7 +330,7 @@ static int phylink_get_mac_state(struct phylink *pl, struct phylink_link_state *
state->an_complete = 0;
state->link = 1;
return pl->ops->mac_link_state(ndev, state);
return pl->ops->mac_link_state(pl->config, state);
}
/* The fixed state is... fixed except for the link state,
@@ -400,7 +400,7 @@ static void phylink_mac_link_up(struct phylink *pl,
{
struct net_device *ndev = pl->netdev;
pl->ops->mac_link_up(ndev, pl->link_an_mode,
pl->ops->mac_link_up(pl->config, pl->link_an_mode,
pl->phy_state.interface,
pl->phydev);
@@ -418,7 +418,7 @@ static void phylink_mac_link_down(struct phylink *pl)
struct net_device *ndev = pl->netdev;
netif_carrier_off(ndev);
pl->ops->mac_link_down(ndev, pl->link_an_mode,
pl->ops->mac_link_down(pl->config, pl->link_an_mode,
pl->phy_state.interface);
netdev_info(ndev, "Link is Down\n");
}
@@ -553,7 +553,7 @@ static int phylink_register_sfp(struct phylink *pl,
* Returns a pointer to a &struct phylink, or an error-pointer value. Users
* must use IS_ERR() to check for errors from this function.
*/
struct phylink *phylink_create(struct net_device *ndev,
struct phylink *phylink_create(struct phylink_config *config,
struct fwnode_handle *fwnode,
phy_interface_t iface,
const struct phylink_mac_ops *ops)
@@ -567,7 +567,15 @@ struct phylink *phylink_create(struct net_device *ndev,
mutex_init(&pl->state_mutex);
INIT_WORK(&pl->resolve, phylink_resolve);
pl->netdev = ndev;
pl->config = config;
if (config->type == PHYLINK_NETDEV) {
pl->netdev = to_net_dev(config->dev);
} else {
kfree(pl);
return ERR_PTR(-EINVAL);
}
pl->phy_state.interface = iface;
pl->link_interface = iface;
if (iface == PHY_INTERFACE_MODE_MOCA)