[PATCH RESEND net-next v3 2/2] net: stmmac: Move MAC caps init to phylink MAC caps getter

Serge Semin
2024-04-19T09:04:10Z

After a set of recent fixes the stmmac_phy_setup() and
stmmac_reinit_queues() methods have turned to having some duplicated code.
Let's get rid from the duplication by moving the MAC-capabilities
initialization to the PHYLINK MAC-capabilities getter. The getter is
called during each network device interface open/close cycle. So the
MAC-capabilities will be initialized in generic device open procedure and
in case of the Tx/Rx queues re-initialization as the original code
semantics implies.

Signed-off-by: Serge Semin <fancer.lancer@gmail.com>
Reviewed-by: Romain Gantois <romain.gantois@bootlin.com>

---

Link: https://lore.kernel.org/netdev/20240412180340.7965-5-fancer.lancer@gmail.com/
Changelog v2:
- Resubmit the patch to net-next separately from the main patchset (Paolo)
---
.../net/ethernet/stmicro/stmmac/stmmac_main.c | 36 +++++++++----------
1 file changed, 17 insertions(+), 19 deletions(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
index b810f6b69bf5..0d6cd1704e6a 100644
--- a/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
+++ b/drivers/net/ethernet/stmicro/stmmac/stmmac_main.c
@@ -936,6 +936,22 @@ static void stmmac_mac_flow_ctrl(struct stmmac_priv *priv, u32 duplex)
priv->pause, tx_cnt);
}

+static unsigned long stmmac_mac_get_caps(struct phylink_config *config,
+ phy_interface_t interface)
+{
+ struct stmmac_priv *priv = netdev_priv(to_net_dev(config->dev));
+
+ /* Refresh the MAC-specific capabilities */
+ stmmac_mac_update_caps(priv);
+
+ config->mac_capabilities = priv->hw->link.caps;
+
+ if (priv->plat->max_speed)
+ phylink_limit_mac_speed(config, priv->plat->max_speed);
+
+ return config->mac_capabilities;
+}
+
static struct phylink_pcs *stmmac_mac_select_pcs(struct phylink_config *config,
phy_interface_t interface)
{
@@ -1105,6 +1121,7 @@ static void stmmac_mac_link_up(struct phylink_config *config,
}

static const struct phylink_mac_ops stmmac_phylink_mac_ops = {
+ .mac_get_caps = stmmac_mac_get_caps,
.mac_select_pcs = stmmac_mac_select_pcs,
.mac_config = stmmac_mac_config,
.mac_link_down = stmmac_mac_link_down,
@@ -1204,7 +1221,6 @@ static int stmmac_phy_setup(struct stmmac_priv *priv)
int mode = priv->plat->phy_interface;
struct fwnode_handle *fwnode;
struct phylink *phylink;
- int max_speed;

priv->phylink_config.dev = &priv->dev->dev;
priv->phylink_config.type = PHYLINK_NETDEV;
@@ -1225,15 +1241,6 @@ static int stmmac_phy_setup(struct stmmac_priv *priv)
xpcs_get_interfaces(priv->hw->xpcs,
priv->phylink_config.supported_interfaces);

- /* Refresh the MAC-specific capabilities */
- stmmac_mac_update_caps(priv);
-
- priv->phylink_config.mac_capabilities = priv->hw->link.caps;
-
- max_speed = priv->plat->max_speed;
- if (max_speed)
- phylink_limit_mac_speed(&priv->phylink_config, max_speed);
-
fwnode = priv->plat->port_node;
if (!fwnode)
fwnode = dev_fwnode(priv->device);
@@ -7327,7 +7334,6 @@ int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt)
{
struct stmmac_priv *priv = netdev_priv(dev);
int ret = 0, i;
- int max_speed;

if (netif_running(dev))
stmmac_release(dev);
@@ -7341,14 +7347,6 @@ int stmmac_reinit_queues(struct net_device *dev, u32 rx_cnt, u32 tx_cnt)
priv->rss.table[i] = ethtool_rxfh_indir_default(i,
rx_cnt);

- stmmac_mac_update_caps(priv);
-
- priv->phylink_config.mac_capabilities = priv->hw->link.caps;
-
- max_speed = priv->plat->max_speed;
- if (max_speed)
- phylink_limit_mac_speed(&priv->phylink_config, max_speed);
-
stmmac_napi_add(dev);

if (netif_running(dev))
--
2.43.0