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net: phylink: propagate resolved link config via mac_link_up()

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Propagate the resolved link parameters via the mac_link_up() call for
MACs that do not automatically track their PCS state. We propagate the
link parameters via function arguments so that inappropriate members
of struct phylink_link_state can't be accessed, and creating a new
structure just for this adds needless complexity to the API.

Tested-by: Andre Przywara <andre.przywara@arm.com>
Tested-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Russell King 2020-02-26 10:23:41 +00:00 committed by David S. Miller
parent 2e6af0f304
commit 91a208f218
11 changed files with 105 additions and 41 deletions
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17
Documentation/networking/sfp-phylink.rst
View File

@ -74,10 +74,13 @@ phylib to the sfp/phylink support. Please send patches to improve
this documentation.
1. Optionally split the network driver's phylib update function into
three parts dealing with link-down, link-up and reconfiguring the
MAC settings. This can be done as a separate preparation commit.
two parts dealing with link-down and link-up. This can be done as
a separate preparation commit.
An example of this preparation can be found in git commit fc548b991fb0.
An older example of this preparation can be found in git commit
fc548b991fb0, although this was splitting into three parts; the
link-up part now includes configuring the MAC for the link settings.
Please see :c:func:`mac_link_up` for more information on this.
2. Replace::
@ -207,6 +210,14 @@ this documentation.
using. This is particularly important for in-band negotiation
methods such as 1000base-X and SGMII.
The :c:func:`mac_link_up` method is used to inform the MAC that the
link has come up. The call includes the negotiation mode and interface
for reference only. The finalised link parameters are also supplied
(speed, duplex and flow control/pause enablement settings) which
should be used to configure the MAC when the MAC and PCS are not
tightly integrated, or when the settings are not coming from in-band
negotiation.
The :c:func:`mac_config` method is used to update the MAC with the
requested state, and must avoid unnecessarily taking the link down
when making changes to the MAC configuration. This means the

7
drivers/net/ethernet/cadence/macb_main.c
View File

@ -626,8 +626,11 @@ static void macb_mac_link_down(struct phylink_config *config, unsigned int mode,
netif_tx_stop_all_queues(ndev);
}
static void macb_mac_link_up(struct phylink_config *config, unsigned int mode,
phy_interface_t interface, struct phy_device *phy)
static void macb_mac_link_up(struct phylink_config *config,
struct phy_device *phy,
unsigned int mode, phy_interface_t interface,
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
struct net_device *ndev = to_net_dev(config->dev);
struct macb *bp = netdev_priv(ndev);

7
drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
View File

@ -154,8 +154,11 @@ static void dpaa2_mac_config(struct phylink_config *config, unsigned int mode,
netdev_err(mac->net_dev, "dpmac_set_link_state() = %d\n", err);
}
static void dpaa2_mac_link_up(struct phylink_config *config, unsigned int mode,
phy_interface_t interface, struct phy_device *phy)
static void dpaa2_mac_link_up(struct phylink_config *config,
struct phy_device *phy,
unsigned int mode, phy_interface_t interface,
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
struct dpaa2_mac *mac = phylink_to_dpaa2_mac(config);
struct dpmac_link_state *dpmac_state = &mac->state;

8
drivers/net/ethernet/marvell/mvneta.c
View File

@ -3965,9 +3965,11 @@ static void mvneta_mac_link_down(struct phylink_config *config,
mvneta_set_eee(pp, false);
}
static void mvneta_mac_link_up(struct phylink_config *config, unsigned int mode,
phy_interface_t interface,
struct phy_device *phy)
static void mvneta_mac_link_up(struct phylink_config *config,
struct phy_device *phy,
unsigned int mode, phy_interface_t interface,
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
struct net_device *ndev = to_net_dev(config->dev);
struct mvneta_port *pp = netdev_priv(ndev);

19
drivers/net/ethernet/marvell/mvpp2/mvpp2_main.c
View File

@ -58,8 +58,11 @@ static struct {
*/
static void mvpp2_mac_config(struct phylink_config *config, unsigned int mode,
const struct phylink_link_state *state);
static void mvpp2_mac_link_up(struct phylink_config *config, unsigned int mode,
phy_interface_t interface, struct phy_device *phy);
static void mvpp2_mac_link_up(struct phylink_config *config,
struct phy_device *phy,
unsigned int mode, phy_interface_t interface,
int speed, int duplex,
bool tx_pause, bool rx_pause);
/* Queue modes */
#define MVPP2_QDIST_SINGLE_MODE 0
@ -3473,8 +3476,9 @@ static void mvpp2_start_dev(struct mvpp2_port *port)
.interface = port->phy_interface,
};
mvpp2_mac_config(&port->phylink_config, MLO_AN_INBAND, &state);
mvpp2_mac_link_up(&port->phylink_config, MLO_AN_INBAND,
port->phy_interface, NULL);
mvpp2_mac_link_up(&port->phylink_config, NULL,
MLO_AN_INBAND, port->phy_interface,
SPEED_UNKNOWN, DUPLEX_UNKNOWN, false, false);
}
netif_tx_start_all_queues(port->dev);
@ -5141,8 +5145,11 @@ static void mvpp2_mac_config(struct phylink_config *config, unsigned int mode,
mvpp2_port_enable(port);
}
static void mvpp2_mac_link_up(struct phylink_config *config, unsigned int mode,
phy_interface_t interface, struct phy_device *phy)
static void mvpp2_mac_link_up(struct phylink_config *config,
struct phy_device *phy,
unsigned int mode, phy_interface_t interface,
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
struct net_device *dev = to_net_dev(config->dev);
struct mvpp2_port *port = netdev_priv(dev);

7
drivers/net/ethernet/mediatek/mtk_eth_soc.c
View File

@ -412,9 +412,10 @@ static void mtk_mac_link_down(struct phylink_config *config, unsigned int mode,
mtk_w32(mac->hw, mcr, MTK_MAC_MCR(mac->id));
}
static void mtk_mac_link_up(struct phylink_config *config, unsigned int mode,
phy_interface_t interface,
struct phy_device *phy)
static void mtk_mac_link_up(struct phylink_config *config,
struct phy_device *phy,
unsigned int mode, phy_interface_t interface,
int speed, int duplex, bool tx_pause, bool rx_pause)
{
struct mtk_mac *mac = container_of(config, struct mtk_mac,
phylink_config);

4
drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
View File

@ -950,8 +950,10 @@ static void stmmac_mac_link_down(struct phylink_config *config,
}
static void stmmac_mac_link_up(struct phylink_config *config,
struct phy_device *phy,
unsigned int mode, phy_interface_t interface,
struct phy_device *phy)
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
struct stmmac_priv *priv = netdev_priv(to_net_dev(config->dev));

7
drivers/net/ethernet/xilinx/xilinx_axienet_main.c
View File

@ -1486,9 +1486,10 @@ static void axienet_mac_link_down(struct phylink_config *config,
}
static void axienet_mac_link_up(struct phylink_config *config,
unsigned int mode,
phy_interface_t interface,
struct phy_device *phy)
struct phy_device *phy,
unsigned int mode, phy_interface_t interface,
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
/* nothing meaningful to do */
}

9
drivers/net/phy/phylink.c
View File

@ -480,8 +480,11 @@ static void phylink_mac_link_up(struct phylink *pl,
struct net_device *ndev = pl->netdev;
pl->cur_interface = link_state.interface;
pl->ops->mac_link_up(pl->config, pl->cur_link_an_mode,
pl->cur_interface, pl->phydev);
pl->ops->mac_link_up(pl->config, pl->phydev,
pl->cur_link_an_mode, pl->cur_interface,
link_state.speed, link_state.duplex,
!!(link_state.pause & MLO_PAUSE_TX),
!!(link_state.pause & MLO_PAUSE_RX));
if (ndev)
netif_carrier_on(ndev);
@ -547,6 +550,8 @@ static void phylink_resolve(struct work_struct *w)
link_state.pause = pl->phy_state.pause;
phylink_apply_manual_flow(pl, &link_state);
phylink_mac_config(pl, &link_state);
} else {
phylink_apply_manual_flow(pl, &link_state);
}
break;
}

57
include/linux/phylink.h
View File

@ -91,9 +91,10 @@ struct phylink_mac_ops {
void (*mac_an_restart)(struct phylink_config *config);
void (*mac_link_down)(struct phylink_config *config, unsigned int mode,
phy_interface_t interface);
void (*mac_link_up)(struct phylink_config *config, unsigned int mode,
phy_interface_t interface,
struct phy_device *phy);
void (*mac_link_up)(struct phylink_config *config,
struct phy_device *phy, unsigned int mode,
phy_interface_t interface, int speed, int duplex,
bool tx_pause, bool rx_pause);
};
#if 0 /* For kernel-doc purposes only. */
@ -152,6 +153,9 @@ void mac_pcs_get_state(struct phylink_config *config,
* guaranteed to be correct, and so any mac_config() implementation must
* never reference these fields.
*
* (this requires a rewrite - please refer to mac_link_up() for situations
* where the PCS and MAC are not tightly integrated.)
*
* In all negotiation modes, as defined by @mode, @state->pause indicates the
* pause settings which should be applied as follows. If %MLO_PAUSE_AN is not
* set, %MLO_PAUSE_TX and %MLO_PAUSE_RX indicate whether the MAC should send
@ -162,12 +166,20 @@ void mac_pcs_get_state(struct phylink_config *config,
* The action performed depends on the currently selected mode:
*
* %MLO_AN_FIXED, %MLO_AN_PHY:
* Configure the specified @state->speed and @state->duplex over a link
* specified by @state->interface. @state->advertising may be used, but
* is not required. Pause modes as above. Other members of @state must
* be ignored.
* Configure for non-inband negotiation mode, where the link settings
* are completely communicated via mac_link_up(). The physical link
* protocol from the MAC is specified by @state->interface.
*
* Valid state members: interface, speed, duplex, pause, advertising.
* @state->advertising may be used, but is not required.
*
* Older drivers (prior to the mac_link_up() change) may use @state->speed,
* @state->duplex and @state->pause to configure the MAC, but this is
* deprecated; such drivers should be converted to use mac_link_up().
*
* Other members of @state must be ignored.
*
* Valid state members: interface, advertising.
* Deprecated state members: speed, duplex, pause.
*
* %MLO_AN_INBAND:
* place the link in an inband negotiation mode (such as 802.3z
@ -228,19 +240,34 @@ void mac_link_down(struct phylink_config *config, unsigned int mode,
/**
* mac_link_up() - allow the link to come up
* @config: a pointer to a &struct phylink_config.
* @phy: any attached phy
* @mode: link autonegotiation mode
* @interface: link &typedef phy_interface_t mode
* @phy: any attached phy
* @speed: link speed
* @duplex: link duplex
* @tx_pause: link transmit pause enablement status
* @rx_pause: link receive pause enablement status
*
* If @mode is not an in-band negotiation mode (as defined by
* phylink_autoneg_inband()), allow the link to come up. If @phy
* is non-%NULL, configure Energy Efficient Ethernet by calling
* Configure the MAC for an established link.
*
* @speed, @duplex, @tx_pause and @rx_pause indicate the finalised link
* settings, and should be used to configure the MAC block appropriately
* where these settings are not automatically conveyed from the PCS block,
* or if in-band negotiation (as defined by phylink_autoneg_inband(@mode))
* is disabled.
*
* Note that when 802.3z in-band negotiation is in use, it is possible
* that the user wishes to override the pause settings, and this should
* be allowed when considering the implementation of this method.
*
* If in-band negotiation mode is disabled, allow the link to come up. If
* @phy is non-%NULL, configure Energy Efficient Ethernet by calling
* phy_init_eee() and perform appropriate MAC configuration for EEE.
* Interface type selection must be done in mac_config().
*/
void mac_link_up(struct phylink_config *config, unsigned int mode,
phy_interface_t interface,
struct phy_device *phy);
void mac_link_up(struct phylink_config *config, struct phy_device *phy,
unsigned int mode, phy_interface_t interface,
int speed, int duplex, bool tx_pause, bool rx_pause);
#endif
struct phylink *phylink_create(struct phylink_config *, struct fwnode_handle *,

4
net/dsa/port.c
View File

@ -489,9 +489,11 @@ static void dsa_port_phylink_mac_link_down(struct phylink_config *config,
}
static void dsa_port_phylink_mac_link_up(struct phylink_config *config,
struct phy_device *phydev,
unsigned int mode,
phy_interface_t interface,
struct phy_device *phydev)
int speed, int duplex,
bool tx_pause, bool rx_pause)
{
struct dsa_port *dp = container_of(config, struct dsa_port, pl_config);
struct dsa_switch *ds = dp->ds;