diff options
Diffstat (limited to 'pkgs/patches-linux-5.15/766-09-net-dsa-qca8k-add-tracking-state-of-master-port.patch')
| -rw-r--r-- | pkgs/patches-linux-5.15/766-09-net-dsa-qca8k-add-tracking-state-of-master-port.patch | 67 |
1 files changed, 67 insertions, 0 deletions
diff --git a/pkgs/patches-linux-5.15/766-09-net-dsa-qca8k-add-tracking-state-of-master-port.patch b/pkgs/patches-linux-5.15/766-09-net-dsa-qca8k-add-tracking-state-of-master-port.patch new file mode 100644 index 0000000..ff8fdca --- /dev/null +++ b/pkgs/patches-linux-5.15/766-09-net-dsa-qca8k-add-tracking-state-of-master-port.patch @@ -0,0 +1,67 @@ +From cddbec19466a1dfb4d45ddd507d9f09f991d54ae Mon Sep 17 00:00:00 2001 +From: Ansuel Smith <ansuelsmth@gmail.com> +Date: Wed, 2 Feb 2022 01:03:28 +0100 +Subject: [PATCH 09/16] net: dsa: qca8k: add tracking state of master port + +MDIO/MIB Ethernet require the master port and the tagger availabale to +correctly work. Use the new api master_state_change to track when master +is operational or not and set a bool in qca8k_priv. +We cache the first cached master available and we check if other cpu +port are operational when the cached one goes down. +This cached master will later be used by mdio read/write and mib request to +correctly use the working function. + +qca8k implementation for MDIO/MIB Ethernet is bad. CPU port0 is the only +one that answers with the ack packet or sends MIB Ethernet packets. For +this reason the master_state_change ignore CPU port6 and only checks +CPU port0 if it's operational and enables this mode. + +Signed-off-by: Ansuel Smith <ansuelsmth@gmail.com> +Reviewed-by: Florian Fainelli <f.fainelli@gmail.com> +Signed-off-by: David S. Miller <davem@davemloft.net> +--- + drivers/net/dsa/qca8k.c | 15 +++++++++++++++ + drivers/net/dsa/qca8k.h | 1 + + 2 files changed, 16 insertions(+) + +--- a/drivers/net/dsa/qca8k.c ++++ b/drivers/net/dsa/qca8k.c +@@ -2382,6 +2382,20 @@ qca8k_port_lag_leave(struct dsa_switch * + return qca8k_lag_refresh_portmap(ds, port, lag, true); + } + ++static void ++qca8k_master_change(struct dsa_switch *ds, const struct net_device *master, ++ bool operational) ++{ ++ struct dsa_port *dp = master->dsa_ptr; ++ struct qca8k_priv *priv = ds->priv; ++ ++ /* Ethernet MIB/MDIO is only supported for CPU port 0 */ ++ if (dp->index != 0) ++ return; ++ ++ priv->mgmt_master = operational ? (struct net_device *)master : NULL; ++} ++ + static const struct dsa_switch_ops qca8k_switch_ops = { + .get_tag_protocol = qca8k_get_tag_protocol, + .setup = qca8k_setup, +@@ -2417,6 +2431,7 @@ static const struct dsa_switch_ops qca8k + .get_phy_flags = qca8k_get_phy_flags, + .port_lag_join = qca8k_port_lag_join, + .port_lag_leave = qca8k_port_lag_leave, ++ .master_state_change = qca8k_master_change, + }; + + static int qca8k_read_switch_id(struct qca8k_priv *priv) +--- a/drivers/net/dsa/qca8k.h ++++ b/drivers/net/dsa/qca8k.h +@@ -353,6 +353,7 @@ struct qca8k_priv { + struct dsa_switch_ops ops; + struct gpio_desc *reset_gpio; + unsigned int port_mtu[QCA8K_NUM_PORTS]; ++ struct net_device *mgmt_master; /* Track if mdio/mib Ethernet is available */ + }; + + struct qca8k_mib_desc { |