From: Vladimir Oltean <vladimir.oltean@xxxxxxx>
[ Upstream commit 32bf8e1f6fb9f6dc334b2b98dffc2e5dcd51e513 ]
Future work in this driver would like to look at priv->active_offloads &
ENETC_F_QBV to determine whether a tc-taprio qdisc offload was
installed, but this does not produce the intended effect.
All the other flags in priv->active_offloads are managed dynamically,
except ENETC_F_QBV which is set statically based on the probed SI capability.
This change makes priv->active_offloads & ENETC_F_QBV really track the
presence of a tc-taprio schedule on the port.
Some existing users, like the enetc_sched_speed_set() call from
phylink_mac_link_up(), are best kept using the old logic: the tc-taprio
offload does not re-trigger another link mode resolve, so the scheduler
needs to be functional from the get go, as long as Qbv is supported at
all on the port. So to preserve functionality there, look at the static
station interface capability from pf->si->hw_features instead.
Signed-off-by: Vladimir Oltean <vladimir.oltean@xxxxxxx>
Reviewed-by: Claudiu Manoil <claudiu.manoil@xxxxxxx>
Signed-off-by: Jakub Kicinski <kuba@xxxxxxxxxx>
Stable-dep-of: 290b5fe096e7 ("net: enetc: preserve TX ring priority across reconfiguration")
Signed-off-by: Sasha Levin <sashal@xxxxxxxxxx>
---
drivers/net/ethernet/freescale/enetc/enetc_pf.c | 6 ++----
drivers/net/ethernet/freescale/enetc/enetc_qos.c | 6 ++++++
2 files changed, 8 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_pf.c b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
index 3615357cc60f..5efb079ef25f 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_pf.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_pf.c
@@ -800,9 +800,6 @@ static void enetc_pf_netdev_setup(struct enetc_si *si, struct net_device *ndev,
ndev->priv_flags |= IFF_UNICAST_FLT;
- if (si->hw_features & ENETC_SI_F_QBV)
- priv->active_offloads |= ENETC_F_QBV;
-
if (si->hw_features & ENETC_SI_F_PSFP && !enetc_psfp_enable(priv)) {
priv->active_offloads |= ENETC_F_QCI;
ndev->features |= NETIF_F_HW_TC;
@@ -1053,7 +1050,8 @@ static void enetc_pl_mac_link_up(struct phylink_config *config,
int idx;
priv = netdev_priv(pf->si->ndev);
- if (priv->active_offloads & ENETC_F_QBV)
+
+ if (pf->si->hw_features & ENETC_SI_F_QBV)
enetc_sched_speed_set(priv, speed);
if (!phylink_autoneg_inband(mode) &&
diff --git a/drivers/net/ethernet/freescale/enetc/enetc_qos.c b/drivers/net/ethernet/freescale/enetc/enetc_qos.c
index 6b236e0fd806..9fd9abad34f8 100644
--- a/drivers/net/ethernet/freescale/enetc/enetc_qos.c
+++ b/drivers/net/ethernet/freescale/enetc/enetc_qos.c
@@ -71,6 +71,9 @@ static int enetc_setup_taprio(struct net_device *ndev,
enetc_wr(&priv->si->hw,
ENETC_QBV_PTGCR_OFFSET,
tge & (~ENETC_QBV_TGE));
+
+ priv->active_offloads &= ~ENETC_F_QBV;
+
return 0;
}
@@ -136,6 +139,9 @@ static int enetc_setup_taprio(struct net_device *ndev,
dma_free_coherent(&priv->si->pdev->dev, data_size + ENETC_QOS_ALIGN,
tmp, dma);
+ if (!err)
+ priv->active_offloads |= ENETC_F_QBV;
+
return err;
}
--
2.35.1
