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kernel/armsr: Add configuration files and patches for v6.6

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Based on the 6.1 files, but without any 6.6 additions.

Signed-off-by: Mathew McBride <matt@traverse.com.au>
This commit is contained in:
Mathew McBride 2024-03-18 10:48:13 +11:00 committed by Daniel Golle
parent bd6852185b
commit f125e38ced
16 changed files with 2 additions and 1325 deletions
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0
target/linux/armsr/armv7/config-6.1 → target/linux/armsr/armv7/config-6.6
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0
target/linux/armsr/armv8/config-6.1 → target/linux/armsr/armv8/config-6.6
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0
target/linux/armsr/config-6.1 → target/linux/armsr/config-6.6
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44
target/linux/armsr/patches-6.1/701-v6.2-0001-net-dpaa2-eth-don-t-use-ENOTSUPP-error-code.patch
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@ -1,44 +0,0 @@
From f3763a0c1b07273218cbf5886bdf8df9df501111 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:10 +0200
Subject: [PATCH 03/14] net: dpaa2-eth: don't use -ENOTSUPP error code
dpaa2_eth_setup_dpni() is called from the probe path and
dpaa2_eth_set_link_ksettings() is propagated to user space.
include/linux/errno.h says that ENOTSUPP is "Defined for the NFSv3
protocol". Conventional wisdom has it to not use it in networking
drivers. Replace it with -EOPNOTSUPP.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 2 +-
drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c | 2 +-
2 files changed, 2 insertions(+), 2 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -3614,7 +3614,7 @@ static int dpaa2_eth_setup_dpni(struct f
dev_err(dev, "DPNI version %u.%u not supported, need >= %u.%u\n",
priv->dpni_ver_major, priv->dpni_ver_minor,
DPNI_VER_MAJOR, DPNI_VER_MINOR);
- err = -ENOTSUPP;
+ err = -EOPNOTSUPP;
goto close;
}
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
@@ -118,7 +118,7 @@ dpaa2_eth_set_link_ksettings(struct net_
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
if (!dpaa2_eth_is_type_phy(priv))
- return -ENOTSUPP;
+ return -EOPNOTSUPP;
return phylink_ethtool_ksettings_set(priv->mac->phylink, link_settings);
}

99
target/linux/armsr/patches-6.1/701-v6.2-0002-net-dpaa2-replace-dpaa2_mac_is_type_fixed-with-dpaa2.patch
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@ -1,99 +0,0 @@
From 022a11062261dc4703da846d3bf4d194ef6bebf5 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:11 +0200
Subject: [PATCH 04/14] net: dpaa2: replace dpaa2_mac_is_type_fixed() with
dpaa2_mac_is_type_phy()
dpaa2_mac_is_type_fixed() is a header with no implementation and no
callers, which is referenced from the documentation though. It can be
deleted.
On the other hand, it would be useful to reuse the code between
dpaa2_eth_is_type_phy() and dpaa2_switch_port_is_type_phy(). That common
code should be called dpaa2_mac_is_type_phy(), so let's create that.
The removal and the addition are merged into the same patch because,
in fact, is_type_phy() is the logical opposite of is_type_fixed().
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
.../ethernet/freescale/dpaa2/mac-phy-support.rst | 9 ++++++---
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h | 7 +------
drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h | 10 ++++++++--
drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h | 7 +------
4 files changed, 16 insertions(+), 17 deletions(-)
--- a/Documentation/networking/device_drivers/ethernet/freescale/dpaa2/mac-phy-support.rst
+++ b/Documentation/networking/device_drivers/ethernet/freescale/dpaa2/mac-phy-support.rst
@@ -181,10 +181,13 @@ when necessary using the below listed AP
- int dpaa2_mac_connect(struct dpaa2_mac *mac);
- void dpaa2_mac_disconnect(struct dpaa2_mac *mac);
-A phylink integration is necessary only when the partner DPMAC is not of TYPE_FIXED.
-One can check for this condition using the below API::
+A phylink integration is necessary only when the partner DPMAC is not of
+``TYPE_FIXED``. This means it is either of ``TYPE_PHY``, or of
+``TYPE_BACKPLANE`` (the difference being the two that in the ``TYPE_BACKPLANE``
+mode, the MC firmware does not access the PCS registers). One can check for
+this condition using the following helper::
- - bool dpaa2_mac_is_type_fixed(struct fsl_mc_device *dpmac_dev,struct fsl_mc_io *mc_io);
+ - static inline bool dpaa2_mac_is_type_phy(struct dpaa2_mac *mac);
Before connection to a MAC, the caller must allocate and populate the
dpaa2_mac structure with the associated net_device, a pointer to the MC portal
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
@@ -733,12 +733,7 @@ static inline unsigned int dpaa2_eth_rx_
static inline bool dpaa2_eth_is_type_phy(struct dpaa2_eth_priv *priv)
{
- if (priv->mac &&
- (priv->mac->attr.link_type == DPMAC_LINK_TYPE_PHY ||
- priv->mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE))
- return true;
-
- return false;
+ return dpaa2_mac_is_type_phy(priv->mac);
}
static inline bool dpaa2_eth_has_mac(struct dpaa2_eth_priv *priv)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.h
@@ -30,8 +30,14 @@ struct dpaa2_mac {
struct phy *serdes_phy;
};
-bool dpaa2_mac_is_type_fixed(struct fsl_mc_device *dpmac_dev,
- struct fsl_mc_io *mc_io);
+static inline bool dpaa2_mac_is_type_phy(struct dpaa2_mac *mac)
+{
+ if (!mac)
+ return false;
+
+ return mac->attr.link_type == DPMAC_LINK_TYPE_PHY ||
+ mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE;
+}
int dpaa2_mac_open(struct dpaa2_mac *mac);
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h
@@ -230,12 +230,7 @@ static inline bool dpaa2_switch_supports
static inline bool
dpaa2_switch_port_is_type_phy(struct ethsw_port_priv *port_priv)
{
- if (port_priv->mac &&
- (port_priv->mac->attr.link_type == DPMAC_LINK_TYPE_PHY ||
- port_priv->mac->attr.link_type == DPMAC_LINK_TYPE_BACKPLANE))
- return true;
-
- return false;
+ return dpaa2_mac_is_type_phy(port_priv->mac);
}
static inline bool dpaa2_switch_port_has_mac(struct ethsw_port_priv *port_priv)

88
target/linux/armsr/patches-6.1/701-v6.2-0003-net-dpaa2-mac-absorb-phylink_start-call-into-dpaa2_m.patch
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@ -1,88 +0,0 @@
From 97c07369ab8bf9895e05d4b468f18e6567263154 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:12 +0200
Subject: [PATCH 05/14] net: dpaa2-mac: absorb phylink_start() call into
dpaa2_mac_start()
The phylink handling is intended to be hidden inside the dpaa2_mac
object. Move the phylink_start() call into dpaa2_mac_start(), and
phylink_stop() into dpaa2_mac_stop().
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 5 +----
drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c | 8 ++++++++
drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c | 5 +----
3 files changed, 10 insertions(+), 8 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -2083,10 +2083,8 @@ static int dpaa2_eth_open(struct net_dev
goto enable_err;
}
- if (dpaa2_eth_is_type_phy(priv)) {
+ if (dpaa2_eth_is_type_phy(priv))
dpaa2_mac_start(priv->mac);
- phylink_start(priv->mac->phylink);
- }
return 0;
@@ -2160,7 +2158,6 @@ static int dpaa2_eth_stop(struct net_dev
int retries = 10;
if (dpaa2_eth_is_type_phy(priv)) {
- phylink_stop(priv->mac->phylink);
dpaa2_mac_stop(priv->mac);
} else {
netif_tx_stop_all_queues(net_dev);
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
@@ -336,12 +336,20 @@ static void dpaa2_mac_set_supported_inte
void dpaa2_mac_start(struct dpaa2_mac *mac)
{
+ ASSERT_RTNL();
+
if (mac->serdes_phy)
phy_power_on(mac->serdes_phy);
+
+ phylink_start(mac->phylink);
}
void dpaa2_mac_stop(struct dpaa2_mac *mac)
{
+ ASSERT_RTNL();
+
+ phylink_stop(mac->phylink);
+
if (mac->serdes_phy)
phy_power_off(mac->serdes_phy);
}
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -703,10 +703,8 @@ static int dpaa2_switch_port_open(struct
dpaa2_switch_enable_ctrl_if_napi(ethsw);
- if (dpaa2_switch_port_is_type_phy(port_priv)) {
+ if (dpaa2_switch_port_is_type_phy(port_priv))
dpaa2_mac_start(port_priv->mac);
- phylink_start(port_priv->mac->phylink);
- }
return 0;
}
@@ -718,7 +716,6 @@ static int dpaa2_switch_port_stop(struct
int err;
if (dpaa2_switch_port_is_type_phy(port_priv)) {
- phylink_stop(port_priv->mac->phylink);
dpaa2_mac_stop(port_priv->mac);
} else {
netif_tx_stop_all_queues(netdev);

50
target/linux/armsr/patches-6.1/701-v6.2-0004-net-dpaa2-mac-remove-defensive-check-in-dpaa2_mac_di.patch
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@ -1,50 +0,0 @@
From 095ef388f714d622aa503fcccf20dc4095b72762 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:13 +0200
Subject: [PATCH 06/14] net: dpaa2-mac: remove defensive check in
dpaa2_mac_disconnect()
dpaa2_mac_disconnect() will only be called with a NULL mac->phylink if
dpaa2_mac_connect() failed, or was never called.
The callers are these:
dpaa2_eth_disconnect_mac():
if (dpaa2_eth_is_type_phy(priv))
dpaa2_mac_disconnect(priv->mac);
dpaa2_switch_port_disconnect_mac():
if (dpaa2_switch_port_is_type_phy(port_priv))
dpaa2_mac_disconnect(port_priv->mac);
priv->mac can be NULL, but in that case, dpaa2_eth_is_type_phy() returns
false, and dpaa2_mac_disconnect() is never called. Similar for
dpaa2-switch.
When priv->mac is non-NULL, it means that dpaa2_mac_connect() returned
zero (success), and therefore, priv->mac->phylink is also a valid
pointer.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c | 3 ---
1 file changed, 3 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
@@ -446,9 +446,6 @@ err_pcs_destroy:
void dpaa2_mac_disconnect(struct dpaa2_mac *mac)
{
- if (!mac->phylink)
- return;
-
phylink_disconnect_phy(mac->phylink);
phylink_destroy(mac->phylink);
dpaa2_pcs_destroy(mac);

101
target/linux/armsr/patches-6.1/701-v6.2-0005-net-dpaa2-eth-assign-priv-mac-after-dpaa2_mac_connec.patch
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@ -1,101 +0,0 @@
From 06efc9b8a1360cad83cae6e71558e5458cc1fbf3 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:14 +0200
Subject: [PATCH 07/14] net: dpaa2-eth: assign priv->mac after
dpaa2_mac_connect() call
There are 2 requirements for correct code:
- Any time the driver accesses the priv->mac pointer at runtime, it
either holds NULL to indicate a DPNI-DPNI connection (or unconnected
DPNI), or a struct dpaa2_mac whose phylink instance was fully
initialized (created and connected to the PHY). No changes are made to
priv->mac while it is being used. Currently, rtnl_lock() watches over
the call to dpaa2_eth_connect_mac(), so it serves the purpose of
serializing this with all readers of priv->mac.
- dpaa2_mac_connect() should run unlocked, because inside it are 2
phylink calls with incompatible locking requirements: phylink_create()
requires that the rtnl_mutex isn't held, and phylink_fwnode_phy_connect()
requires that the rtnl_mutex is held. The only way to solve those
contradictory requirements is to let dpaa2_mac_connect() take
rtnl_lock() when it needs to.
To solve both requirements, we need to identify the writer side of the
priv->mac pointer, which can be wrapped in a mutex private to the driver
in a future patch. The dpaa2_mac_connect() cannot be part of the writer
side critical section, because of an AB/BA deadlock with rtnl_lock().
So the strategy needs to be that where we prepare the DPMAC by calling
dpaa2_mac_connect(), and only make priv->mac point to it once it's fully
prepared. This ensures that the writer side critical section has the
absolute minimum surface it can.
The reverse strategy is adopted in the dpaa2_eth_disconnect_mac() code
path. This makes sure that priv->mac is NULL when we start tearing down
the DPMAC that we disconnected from, and concurrent code will simply not
see it.
No locking changes in this patch (concurrent code is still blocked by
the rtnl_mutex).
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
.../net/ethernet/freescale/dpaa2/dpaa2-eth.c | 21 +++++++++++--------
1 file changed, 12 insertions(+), 9 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -4444,9 +4444,8 @@ static int dpaa2_eth_connect_mac(struct
err = dpaa2_mac_open(mac);
if (err)
goto err_free_mac;
- priv->mac = mac;
- if (dpaa2_eth_is_type_phy(priv)) {
+ if (dpaa2_mac_is_type_phy(mac)) {
err = dpaa2_mac_connect(mac);
if (err && err != -EPROBE_DEFER)
netdev_err(priv->net_dev, "Error connecting to the MAC endpoint: %pe",
@@ -4455,11 +4454,12 @@ static int dpaa2_eth_connect_mac(struct
goto err_close_mac;
}
+ priv->mac = mac;
+
return 0;
err_close_mac:
dpaa2_mac_close(mac);
- priv->mac = NULL;
err_free_mac:
kfree(mac);
return err;
@@ -4467,15 +4467,18 @@ err_free_mac:
static void dpaa2_eth_disconnect_mac(struct dpaa2_eth_priv *priv)
{
- if (dpaa2_eth_is_type_phy(priv))
- dpaa2_mac_disconnect(priv->mac);
+ struct dpaa2_mac *mac = priv->mac;
+
+ priv->mac = NULL;
- if (!dpaa2_eth_has_mac(priv))
+ if (!mac)
return;
- dpaa2_mac_close(priv->mac);
- kfree(priv->mac);
- priv->mac = NULL;
+ if (dpaa2_mac_is_type_phy(mac))
+ dpaa2_mac_disconnect(mac);
+
+ dpaa2_mac_close(mac);
+ kfree(mac);
}
static irqreturn_t dpni_irq0_handler_thread(int irq_num, void *arg)

73
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@ -1,73 +0,0 @@
From a5e7f7e277bd4403c45c1c7922d56d0eb08dbc7c Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:15 +0200
Subject: [PATCH 08/14] net: dpaa2-switch: assign port_priv->mac after
dpaa2_mac_connect() call
The dpaa2-switch has the exact same locking requirements when connected
to a DPMAC, so it needs port_priv->mac to always point either to NULL,
or to a DPMAC with a fully initialized phylink instance.
Make the same preparatory change in the dpaa2-switch driver as in the
dpaa2-eth one.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
.../ethernet/freescale/dpaa2/dpaa2-switch.c | 21 +++++++++++--------
1 file changed, 12 insertions(+), 9 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -1450,9 +1450,8 @@ static int dpaa2_switch_port_connect_mac
err = dpaa2_mac_open(mac);
if (err)
goto err_free_mac;
- port_priv->mac = mac;
- if (dpaa2_switch_port_is_type_phy(port_priv)) {
+ if (dpaa2_mac_is_type_phy(mac)) {
err = dpaa2_mac_connect(mac);
if (err) {
netdev_err(port_priv->netdev,
@@ -1462,11 +1461,12 @@ static int dpaa2_switch_port_connect_mac
}
}
+ port_priv->mac = mac;
+
return 0;
err_close_mac:
dpaa2_mac_close(mac);
- port_priv->mac = NULL;
err_free_mac:
kfree(mac);
return err;
@@ -1474,15 +1474,18 @@ err_free_mac:
static void dpaa2_switch_port_disconnect_mac(struct ethsw_port_priv *port_priv)
{
- if (dpaa2_switch_port_is_type_phy(port_priv))
- dpaa2_mac_disconnect(port_priv->mac);
+ struct dpaa2_mac *mac = port_priv->mac;
+
+ port_priv->mac = NULL;
- if (!dpaa2_switch_port_has_mac(port_priv))
+ if (!mac)
return;
- dpaa2_mac_close(port_priv->mac);
- kfree(port_priv->mac);
- port_priv->mac = NULL;
+ if (dpaa2_mac_is_type_phy(mac))
+ dpaa2_mac_disconnect(mac);
+
+ dpaa2_mac_close(mac);
+ kfree(mac);
}
static irqreturn_t dpaa2_switch_irq0_handler_thread(int irq_num, void *arg)

111
target/linux/armsr/patches-6.1/701-v6.2-0007-net-dpaa2-publish-MAC-stringset-to-ethtool-S-even-if.patch
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@ -1,111 +0,0 @@
From ce44b6ed9ee65efa9b3025552c513842eabcab88 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:16 +0200
Subject: [PATCH 09/14] net: dpaa2: publish MAC stringset to ethtool -S even if
MAC is missing
DPNIs and DPSW objects can connect and disconnect at runtime from DPMAC
objects on the same fsl-mc bus. The DPMAC object also holds "ethtool -S"
unstructured counters. Those counters are only shown for the entity
owning the netdev (DPNI, DPSW) if it's connected to a DPMAC.
The ethtool stringset code path is split into multiple callbacks, but
currently, connecting and disconnecting the DPMAC takes the rtnl_lock().
This blocks the entire ethtool code path from running, see
ethnl_default_doit() -> rtnl_lock() -> ops->prepare_data() ->
strset_prepare_data().
This is going to be a problem if we are going to no longer require
rtnl_lock() when connecting/disconnecting the DPMAC, because the DPMAC
could appear between ops->get_sset_count() and ops->get_strings().
If it appears out of the blue, we will provide a stringset into an array
that was dimensioned thinking the DPMAC wouldn't be there => array
accessed out of bounds.
There isn't really a good way to work around that, and I don't want to
put too much pressure on the ethtool framework by playing locking games.
Just make the DPMAC counters be always available. They'll be zeroes if
the DPNI or DPSW isn't connected to a DPMAC.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c | 12 +++---------
.../ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c | 11 ++---------
2 files changed, 5 insertions(+), 18 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
@@ -186,7 +186,6 @@ static int dpaa2_eth_set_pauseparam(stru
static void dpaa2_eth_get_strings(struct net_device *netdev, u32 stringset,
u8 *data)
{
- struct dpaa2_eth_priv *priv = netdev_priv(netdev);
u8 *p = data;
int i;
@@ -200,22 +199,17 @@ static void dpaa2_eth_get_strings(struct
strscpy(p, dpaa2_ethtool_extras[i], ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
}
- if (dpaa2_eth_has_mac(priv))
- dpaa2_mac_get_strings(p);
+ dpaa2_mac_get_strings(p);
break;
}
}
static int dpaa2_eth_get_sset_count(struct net_device *net_dev, int sset)
{
- int num_ss_stats = DPAA2_ETH_NUM_STATS + DPAA2_ETH_NUM_EXTRA_STATS;
- struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
-
switch (sset) {
case ETH_SS_STATS: /* ethtool_get_stats(), ethtool_get_drvinfo() */
- if (dpaa2_eth_has_mac(priv))
- num_ss_stats += dpaa2_mac_get_sset_count();
- return num_ss_stats;
+ return DPAA2_ETH_NUM_STATS + DPAA2_ETH_NUM_EXTRA_STATS +
+ dpaa2_mac_get_sset_count();
default:
return -EOPNOTSUPP;
}
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
@@ -145,14 +145,9 @@ dpaa2_switch_set_link_ksettings(struct n
static int
dpaa2_switch_ethtool_get_sset_count(struct net_device *netdev, int sset)
{
- struct ethsw_port_priv *port_priv = netdev_priv(netdev);
- int num_ss_stats = DPAA2_SWITCH_NUM_COUNTERS;
-
switch (sset) {
case ETH_SS_STATS:
- if (port_priv->mac)
- num_ss_stats += dpaa2_mac_get_sset_count();
- return num_ss_stats;
+ return DPAA2_SWITCH_NUM_COUNTERS + dpaa2_mac_get_sset_count();
default:
return -EOPNOTSUPP;
}
@@ -161,7 +156,6 @@ dpaa2_switch_ethtool_get_sset_count(stru
static void dpaa2_switch_ethtool_get_strings(struct net_device *netdev,
u32 stringset, u8 *data)
{
- struct ethsw_port_priv *port_priv = netdev_priv(netdev);
u8 *p = data;
int i;
@@ -172,8 +166,7 @@ static void dpaa2_switch_ethtool_get_str
ETH_GSTRING_LEN);
p += ETH_GSTRING_LEN;
}
- if (port_priv->mac)
- dpaa2_mac_get_strings(p);
+ dpaa2_mac_get_strings(p);
break;
}
}

28
target/linux/armsr/patches-6.1/701-v6.2-0008-net-dpaa2-switch-replace-direct-MAC-access-with-dpaa.patch
View File

@ -1,28 +0,0 @@
From c838d9fd7e6ba9ddd6006bf0a296396266e9f121 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:17 +0200
Subject: [PATCH 10/14] net: dpaa2-switch replace direct MAC access with
dpaa2_switch_port_has_mac()
The helper function will gain a lockdep annotation in a future patch.
Make sure to benefit from it.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
@@ -189,7 +189,7 @@ static void dpaa2_switch_ethtool_get_sta
dpaa2_switch_ethtool_counters[i].name, err);
}
- if (port_priv->mac)
+ if (dpaa2_switch_port_has_mac(port_priv))
dpaa2_mac_get_ethtool_stats(port_priv->mac, data + i);
}

93
target/linux/armsr/patches-6.1/701-v6.2-0009-net-dpaa2-eth-connect-to-MAC-before-requesting-the-e.patch
View File

@ -1,93 +0,0 @@
From e0ea63162cb5f1ca7f844d6ef5fc4079448ee2d5 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:18 +0200
Subject: [PATCH 11/14] net: dpaa2-eth: connect to MAC before requesting the
"endpoint changed" IRQ
dpaa2_eth_connect_mac() is called both from dpaa2_eth_probe() and from
dpni_irq0_handler_thread().
It could happen that the DPNI gets connected to a DPMAC on the fsl-mc
bus exactly during probe, as soon as the "endpoint change" interrupt is
requested in dpaa2_eth_setup_irqs(). This will cause the
dpni_irq0_handler_thread() to register a phylink instance for that DPMAC.
Then, the probing function will also try to register a phylink instance
for the same DPMAC, operation which should fail (and this will fail the
probing of the driver).
Reorder dpaa2_eth_setup_irqs() and dpaa2_eth_connect_mac(), such that
dpni_irq0_handler_thread() never races with the DPMAC-related portion of
the probing path.
Also reorder dpaa2_eth_disconnect_mac() to be in the mirror position of
dpaa2_eth_connect_mac() in the teardown path.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
.../net/ethernet/freescale/dpaa2/dpaa2-eth.c | 18 +++++++++---------
1 file changed, 9 insertions(+), 9 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -4711,6 +4711,10 @@ static int dpaa2_eth_probe(struct fsl_mc
}
#endif
+ err = dpaa2_eth_connect_mac(priv);
+ if (err)
+ goto err_connect_mac;
+
err = dpaa2_eth_setup_irqs(dpni_dev);
if (err) {
netdev_warn(net_dev, "Failed to set link interrupt, fall back to polling\n");
@@ -4723,10 +4727,6 @@ static int dpaa2_eth_probe(struct fsl_mc
priv->do_link_poll = true;
}
- err = dpaa2_eth_connect_mac(priv);
- if (err)
- goto err_connect_mac;
-
err = dpaa2_eth_dl_alloc(priv);
if (err)
goto err_dl_register;
@@ -4762,13 +4762,13 @@ err_dl_port_add:
err_dl_trap_register:
dpaa2_eth_dl_free(priv);
err_dl_register:
- dpaa2_eth_disconnect_mac(priv);
-err_connect_mac:
if (priv->do_link_poll)
kthread_stop(priv->poll_thread);
else
fsl_mc_free_irqs(dpni_dev);
err_poll_thread:
+ dpaa2_eth_disconnect_mac(priv);
+err_connect_mac:
dpaa2_eth_free_rings(priv);
err_alloc_rings:
err_csum:
@@ -4816,9 +4816,6 @@ static int dpaa2_eth_remove(struct fsl_m
#endif
unregister_netdev(net_dev);
- rtnl_lock();
- dpaa2_eth_disconnect_mac(priv);
- rtnl_unlock();
dpaa2_eth_dl_port_del(priv);
dpaa2_eth_dl_traps_unregister(priv);
@@ -4829,6 +4826,9 @@ static int dpaa2_eth_remove(struct fsl_m
else
fsl_mc_free_irqs(ls_dev);
+ rtnl_lock();
+ dpaa2_eth_disconnect_mac(priv);
+ rtnl_unlock();
dpaa2_eth_free_rings(priv);
free_percpu(priv->fd);
free_percpu(priv->sgt_cache);

320
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View File

@ -1,320 +0,0 @@
From 5e448a17dfa2e95166534df7f677a3694ef6187d Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:19 +0200
Subject: [PATCH 12/14] net: dpaa2-eth: serialize changes to priv->mac with a
mutex
The dpaa2 architecture permits dynamic connections between objects on
the fsl-mc bus, specifically between a DPNI object (represented by a
struct net_device) and a DPMAC object (represented by a struct phylink).
The DPNI driver is notified when those connections are created/broken
through the dpni_irq0_handler_thread() method. To ensure that ethtool
operations, as well as netdev up/down operations serialize with the
connection/disconnection of the DPNI with a DPMAC,
dpni_irq0_handler_thread() takes the rtnl_lock() to block those other
operations from taking place.
There is code called by dpaa2_mac_connect() which wants to acquire the
rtnl_mutex once again, see phylink_create() -> phylink_register_sfp() ->
sfp_bus_add_upstream() -> rtnl_lock(). So the strategy doesn't quite
work out, even though it's fairly simple.
Create a different strategy, where all code paths in the dpaa2-eth
driver access priv->mac only while they are holding priv->mac_lock.
The phylink instance is not created or connected to the PHY under the
priv->mac_lock, but only assigned to priv->mac then. This will eliminate
the reliance on the rtnl_mutex.
Add lockdep annotations and put comments where holding the lock is not
necessary, and priv->mac can be dereferenced freely.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
.../net/ethernet/freescale/dpaa2/dpaa2-eth.c | 43 ++++++++++++--
.../net/ethernet/freescale/dpaa2/dpaa2-eth.h | 6 ++
.../ethernet/freescale/dpaa2/dpaa2-ethtool.c | 58 +++++++++++++++----
3 files changed, 91 insertions(+), 16 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -2021,8 +2021,11 @@ static int dpaa2_eth_link_state_update(s
/* When we manage the MAC/PHY using phylink there is no need
* to manually update the netif_carrier.
+ * We can avoid locking because we are called from the "link changed"
+ * IRQ handler, which is the same as the "endpoint changed" IRQ handler
+ * (the writer to priv->mac), so we cannot race with it.
*/
- if (dpaa2_eth_is_type_phy(priv))
+ if (dpaa2_mac_is_type_phy(priv->mac))
goto out;
/* Chech link state; speed / duplex changes are not treated yet */
@@ -2061,6 +2064,8 @@ static int dpaa2_eth_open(struct net_dev
priv->dpbp_dev->obj_desc.id, priv->bpid);
}
+ mutex_lock(&priv->mac_lock);
+
if (!dpaa2_eth_is_type_phy(priv)) {
/* We'll only start the txqs when the link is actually ready;
* make sure we don't race against the link up notification,
@@ -2079,6 +2084,7 @@ static int dpaa2_eth_open(struct net_dev
err = dpni_enable(priv->mc_io, 0, priv->mc_token);
if (err < 0) {
+ mutex_unlock(&priv->mac_lock);
netdev_err(net_dev, "dpni_enable() failed\n");
goto enable_err;
}
@@ -2086,6 +2092,8 @@ static int dpaa2_eth_open(struct net_dev
if (dpaa2_eth_is_type_phy(priv))
dpaa2_mac_start(priv->mac);
+ mutex_unlock(&priv->mac_lock);
+
return 0;
enable_err:
@@ -2157,6 +2165,8 @@ static int dpaa2_eth_stop(struct net_dev
int dpni_enabled = 0;
int retries = 10;
+ mutex_lock(&priv->mac_lock);
+
if (dpaa2_eth_is_type_phy(priv)) {
dpaa2_mac_stop(priv->mac);
} else {
@@ -2164,6 +2174,8 @@ static int dpaa2_eth_stop(struct net_dev
netif_carrier_off(net_dev);
}
+ mutex_unlock(&priv->mac_lock);
+
/* On dpni_disable(), the MC firmware will:
* - stop MAC Rx and wait for all Rx frames to be enqueued to software
* - cut off WRIOP dequeues from egress FQs and wait until transmission
@@ -2489,12 +2501,20 @@ static int dpaa2_eth_ts_ioctl(struct net
static int dpaa2_eth_ioctl(struct net_device *dev, struct ifreq *rq, int cmd)
{
struct dpaa2_eth_priv *priv = netdev_priv(dev);
+ int err;
if (cmd == SIOCSHWTSTAMP)
return dpaa2_eth_ts_ioctl(dev, rq, cmd);
- if (dpaa2_eth_is_type_phy(priv))
- return phylink_mii_ioctl(priv->mac->phylink, rq, cmd);
+ mutex_lock(&priv->mac_lock);
+
+ if (dpaa2_eth_is_type_phy(priv)) {
+ err = phylink_mii_ioctl(priv->mac->phylink, rq, cmd);
+ mutex_unlock(&priv->mac_lock);
+ return err;
+ }
+
+ mutex_unlock(&priv->mac_lock);
return -EOPNOTSUPP;
}
@@ -4454,7 +4474,9 @@ static int dpaa2_eth_connect_mac(struct
goto err_close_mac;
}
+ mutex_lock(&priv->mac_lock);
priv->mac = mac;
+ mutex_unlock(&priv->mac_lock);
return 0;
@@ -4467,9 +4489,12 @@ err_free_mac:
static void dpaa2_eth_disconnect_mac(struct dpaa2_eth_priv *priv)
{
- struct dpaa2_mac *mac = priv->mac;
+ struct dpaa2_mac *mac;
+ mutex_lock(&priv->mac_lock);
+ mac = priv->mac;
priv->mac = NULL;
+ mutex_unlock(&priv->mac_lock);
if (!mac)
return;
@@ -4488,6 +4513,7 @@ static irqreturn_t dpni_irq0_handler_thr
struct fsl_mc_device *dpni_dev = to_fsl_mc_device(dev);
struct net_device *net_dev = dev_get_drvdata(dev);
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
+ bool had_mac;
int err;
err = dpni_get_irq_status(dpni_dev->mc_io, 0, dpni_dev->mc_handle,
@@ -4505,7 +4531,12 @@ static irqreturn_t dpni_irq0_handler_thr
dpaa2_eth_update_tx_fqids(priv);
rtnl_lock();
- if (dpaa2_eth_has_mac(priv))
+ /* We can avoid locking because the "endpoint changed" IRQ
+ * handler is the only one who changes priv->mac at runtime,
+ * so we are not racing with anyone.
+ */
+ had_mac = !!priv->mac;
+ if (had_mac)
dpaa2_eth_disconnect_mac(priv);
else
dpaa2_eth_connect_mac(priv);
@@ -4606,6 +4637,8 @@ static int dpaa2_eth_probe(struct fsl_mc
priv = netdev_priv(net_dev);
priv->net_dev = net_dev;
+ mutex_init(&priv->mac_lock);
+
priv->iommu_domain = iommu_get_domain_for_dev(dev);
priv->tx_tstamp_type = HWTSTAMP_TX_OFF;
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.h
@@ -580,6 +580,8 @@ struct dpaa2_eth_priv {
#endif
struct dpaa2_mac *mac;
+ /* Serializes changes to priv->mac */
+ struct mutex mac_lock;
struct workqueue_struct *dpaa2_ptp_wq;
struct work_struct tx_onestep_tstamp;
struct sk_buff_head tx_skbs;
@@ -733,11 +735,15 @@ static inline unsigned int dpaa2_eth_rx_
static inline bool dpaa2_eth_is_type_phy(struct dpaa2_eth_priv *priv)
{
+ lockdep_assert_held(&priv->mac_lock);
+
return dpaa2_mac_is_type_phy(priv->mac);
}
static inline bool dpaa2_eth_has_mac(struct dpaa2_eth_priv *priv)
{
+ lockdep_assert_held(&priv->mac_lock);
+
return priv->mac ? true : false;
}
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-ethtool.c
@@ -86,11 +86,16 @@ static void dpaa2_eth_get_drvinfo(struct
static int dpaa2_eth_nway_reset(struct net_device *net_dev)
{
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
+ int err = -EOPNOTSUPP;
+
+ mutex_lock(&priv->mac_lock);
if (dpaa2_eth_is_type_phy(priv))
- return phylink_ethtool_nway_reset(priv->mac->phylink);
+ err = phylink_ethtool_nway_reset(priv->mac->phylink);
+
+ mutex_unlock(&priv->mac_lock);
- return -EOPNOTSUPP;
+ return err;
}
static int
@@ -98,10 +103,18 @@ dpaa2_eth_get_link_ksettings(struct net_
struct ethtool_link_ksettings *link_settings)
{
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
+ int err;
- if (dpaa2_eth_is_type_phy(priv))
- return phylink_ethtool_ksettings_get(priv->mac->phylink,
- link_settings);
+ mutex_lock(&priv->mac_lock);
+
+ if (dpaa2_eth_is_type_phy(priv)) {
+ err = phylink_ethtool_ksettings_get(priv->mac->phylink,
+ link_settings);
+ mutex_unlock(&priv->mac_lock);
+ return err;
+ }
+
+ mutex_unlock(&priv->mac_lock);
link_settings->base.autoneg = AUTONEG_DISABLE;
if (!(priv->link_state.options & DPNI_LINK_OPT_HALF_DUPLEX))
@@ -116,11 +129,17 @@ dpaa2_eth_set_link_ksettings(struct net_
const struct ethtool_link_ksettings *link_settings)
{
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
+ int err = -EOPNOTSUPP;
- if (!dpaa2_eth_is_type_phy(priv))
- return -EOPNOTSUPP;
+ mutex_lock(&priv->mac_lock);
+
+ if (dpaa2_eth_is_type_phy(priv))
+ err = phylink_ethtool_ksettings_set(priv->mac->phylink,
+ link_settings);
- return phylink_ethtool_ksettings_set(priv->mac->phylink, link_settings);
+ mutex_unlock(&priv->mac_lock);
+
+ return err;
}
static void dpaa2_eth_get_pauseparam(struct net_device *net_dev,
@@ -129,11 +148,16 @@ static void dpaa2_eth_get_pauseparam(str
struct dpaa2_eth_priv *priv = netdev_priv(net_dev);
u64 link_options = priv->link_state.options;
+ mutex_lock(&priv->mac_lock);
+
if (dpaa2_eth_is_type_phy(priv)) {
phylink_ethtool_get_pauseparam(priv->mac->phylink, pause);
+ mutex_unlock(&priv->mac_lock);
return;
}
+ mutex_unlock(&priv->mac_lock);
+
pause->rx_pause = dpaa2_eth_rx_pause_enabled(link_options);
pause->tx_pause = dpaa2_eth_tx_pause_enabled(link_options);
pause->autoneg = AUTONEG_DISABLE;
@@ -152,9 +176,17 @@ static int dpaa2_eth_set_pauseparam(stru
return -EOPNOTSUPP;
}
- if (dpaa2_eth_is_type_phy(priv))
- return phylink_ethtool_set_pauseparam(priv->mac->phylink,
- pause);
+ mutex_lock(&priv->mac_lock);
+
+ if (dpaa2_eth_is_type_phy(priv)) {
+ err = phylink_ethtool_set_pauseparam(priv->mac->phylink,
+ pause);
+ mutex_unlock(&priv->mac_lock);
+ return err;
+ }
+
+ mutex_unlock(&priv->mac_lock);
+
if (pause->autoneg)
return -EOPNOTSUPP;
@@ -307,8 +339,12 @@ static void dpaa2_eth_get_ethtool_stats(
}
*(data + i++) = buf_cnt;
+ mutex_lock(&priv->mac_lock);
+
if (dpaa2_eth_has_mac(priv))
dpaa2_mac_get_ethtool_stats(priv->mac, data + i);
+
+ mutex_unlock(&priv->mac_lock);
}
static int dpaa2_eth_prep_eth_rule(struct ethhdr *eth_value, struct ethhdr *eth_mask,

203
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View File

@ -1,203 +0,0 @@
From 80d12452a5f160c39d63efc1be07df36f9d07133 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:20 +0200
Subject: [PATCH 13/14] net: dpaa2-switch: serialize changes to priv->mac with
a mutex
The dpaa2-switch driver uses a DPMAC in the same way as the dpaa2-eth
driver, so we need to duplicate the locking solution established by the
previous change to the switch driver as well.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
.../freescale/dpaa2/dpaa2-switch-ethtool.c | 32 +++++++++++++++----
.../ethernet/freescale/dpaa2/dpaa2-switch.c | 31 ++++++++++++++++--
.../ethernet/freescale/dpaa2/dpaa2-switch.h | 2 ++
3 files changed, 55 insertions(+), 10 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch-ethtool.c
@@ -60,11 +60,18 @@ dpaa2_switch_get_link_ksettings(struct n
{
struct ethsw_port_priv *port_priv = netdev_priv(netdev);
struct dpsw_link_state state = {0};
- int err = 0;
+ int err;
- if (dpaa2_switch_port_is_type_phy(port_priv))
- return phylink_ethtool_ksettings_get(port_priv->mac->phylink,
- link_ksettings);
+ mutex_lock(&port_priv->mac_lock);
+
+ if (dpaa2_switch_port_is_type_phy(port_priv)) {
+ err = phylink_ethtool_ksettings_get(port_priv->mac->phylink,
+ link_ksettings);
+ mutex_unlock(&port_priv->mac_lock);
+ return err;
+ }
+
+ mutex_unlock(&port_priv->mac_lock);
err = dpsw_if_get_link_state(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
@@ -99,9 +106,16 @@ dpaa2_switch_set_link_ksettings(struct n
bool if_running;
int err = 0, ret;
- if (dpaa2_switch_port_is_type_phy(port_priv))
- return phylink_ethtool_ksettings_set(port_priv->mac->phylink,
- link_ksettings);
+ mutex_lock(&port_priv->mac_lock);
+
+ if (dpaa2_switch_port_is_type_phy(port_priv)) {
+ err = phylink_ethtool_ksettings_set(port_priv->mac->phylink,
+ link_ksettings);
+ mutex_unlock(&port_priv->mac_lock);
+ return err;
+ }
+
+ mutex_unlock(&port_priv->mac_lock);
/* Interface needs to be down to change link settings */
if_running = netif_running(netdev);
@@ -189,8 +203,12 @@ static void dpaa2_switch_ethtool_get_sta
dpaa2_switch_ethtool_counters[i].name, err);
}
+ mutex_lock(&port_priv->mac_lock);
+
if (dpaa2_switch_port_has_mac(port_priv))
dpaa2_mac_get_ethtool_stats(port_priv->mac, data + i);
+
+ mutex_unlock(&port_priv->mac_lock);
}
const struct ethtool_ops dpaa2_switch_port_ethtool_ops = {
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -603,8 +603,11 @@ static int dpaa2_switch_port_link_state_
/* When we manage the MAC/PHY using phylink there is no need
* to manually update the netif_carrier.
+ * We can avoid locking because we are called from the "link changed"
+ * IRQ handler, which is the same as the "endpoint changed" IRQ handler
+ * (the writer to port_priv->mac), so we cannot race with it.
*/
- if (dpaa2_switch_port_is_type_phy(port_priv))
+ if (dpaa2_mac_is_type_phy(port_priv->mac))
return 0;
/* Interrupts are received even though no one issued an 'ifconfig up'
@@ -684,6 +687,8 @@ static int dpaa2_switch_port_open(struct
struct ethsw_core *ethsw = port_priv->ethsw_data;
int err;
+ mutex_lock(&port_priv->mac_lock);
+
if (!dpaa2_switch_port_is_type_phy(port_priv)) {
/* Explicitly set carrier off, otherwise
* netif_carrier_ok() will return true and cause 'ip link show'
@@ -697,6 +702,7 @@ static int dpaa2_switch_port_open(struct
port_priv->ethsw_data->dpsw_handle,
port_priv->idx);
if (err) {
+ mutex_unlock(&port_priv->mac_lock);
netdev_err(netdev, "dpsw_if_enable err %d\n", err);
return err;
}
@@ -706,6 +712,8 @@ static int dpaa2_switch_port_open(struct
if (dpaa2_switch_port_is_type_phy(port_priv))
dpaa2_mac_start(port_priv->mac);
+ mutex_unlock(&port_priv->mac_lock);
+
return 0;
}
@@ -715,6 +723,8 @@ static int dpaa2_switch_port_stop(struct
struct ethsw_core *ethsw = port_priv->ethsw_data;
int err;
+ mutex_lock(&port_priv->mac_lock);
+
if (dpaa2_switch_port_is_type_phy(port_priv)) {
dpaa2_mac_stop(port_priv->mac);
} else {
@@ -722,6 +732,8 @@ static int dpaa2_switch_port_stop(struct
netif_carrier_off(netdev);
}
+ mutex_unlock(&port_priv->mac_lock);
+
err = dpsw_if_disable(port_priv->ethsw_data->mc_io, 0,
port_priv->ethsw_data->dpsw_handle,
port_priv->idx);
@@ -1461,7 +1473,9 @@ static int dpaa2_switch_port_connect_mac
}
}
+ mutex_lock(&port_priv->mac_lock);
port_priv->mac = mac;
+ mutex_unlock(&port_priv->mac_lock);
return 0;
@@ -1474,9 +1488,12 @@ err_free_mac:
static void dpaa2_switch_port_disconnect_mac(struct ethsw_port_priv *port_priv)
{
- struct dpaa2_mac *mac = port_priv->mac;
+ struct dpaa2_mac *mac;
+ mutex_lock(&port_priv->mac_lock);
+ mac = port_priv->mac;
port_priv->mac = NULL;
+ mutex_unlock(&port_priv->mac_lock);
if (!mac)
return;
@@ -1495,6 +1512,7 @@ static irqreturn_t dpaa2_switch_irq0_han
struct ethsw_port_priv *port_priv;
u32 status = ~0;
int err, if_id;
+ bool had_mac;
err = dpsw_get_irq_status(ethsw->mc_io, 0, ethsw->dpsw_handle,
DPSW_IRQ_INDEX_IF, &status);
@@ -1513,7 +1531,12 @@ static irqreturn_t dpaa2_switch_irq0_han
if (status & DPSW_IRQ_EVENT_ENDPOINT_CHANGED) {
rtnl_lock();
- if (dpaa2_switch_port_has_mac(port_priv))
+ /* We can avoid locking because the "endpoint changed" IRQ
+ * handler is the only one who changes priv->mac at runtime,
+ * so we are not racing with anyone.
+ */
+ had_mac = !!port_priv->mac;
+ if (had_mac)
dpaa2_switch_port_disconnect_mac(port_priv);
else
dpaa2_switch_port_connect_mac(port_priv);
@@ -3249,6 +3272,8 @@ static int dpaa2_switch_probe_port(struc
port_priv->netdev = port_netdev;
port_priv->ethsw_data = ethsw;
+ mutex_init(&port_priv->mac_lock);
+
port_priv->idx = port_idx;
port_priv->stp_state = BR_STATE_FORWARDING;
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.h
@@ -161,6 +161,8 @@ struct ethsw_port_priv {
struct dpaa2_switch_filter_block *filter_block;
struct dpaa2_mac *mac;
+ /* Protects against changes to port_priv->mac */
+ struct mutex mac_lock;
};
/* Switch data */

113
target/linux/armsr/patches-6.1/701-v6.2-0012-net-dpaa2-mac-move-rtnl_lock-only-around-phylink.patch
View File

@ -1,113 +0,0 @@
From 4ea2faf5bb13d9ba9f07e996d495c4cbe34a4236 Mon Sep 17 00:00:00 2001
From: Vladimir Oltean <vladimir.oltean@nxp.com>
Date: Tue, 29 Nov 2022 16:12:21 +0200
Subject: [PATCH 14/14] net: dpaa2-mac: move rtnl_lock() only around
phylink_{,dis}connect_phy()
After the introduction of a private mac_lock that serializes access to
priv->mac (and port_priv->mac in the switch), the only remaining purpose
of rtnl_lock() is to satisfy the locking requirements of
phylink_fwnode_phy_connect() and phylink_disconnect_phy().
But the functions these live in, dpaa2_mac_connect() and
dpaa2_mac_disconnect(), have contradictory locking requirements.
While phylink_fwnode_phy_connect() wants rtnl_lock() to be held,
phylink_create() wants it to not be held.
Move the rtnl_lock() from top-level (in the dpaa2-eth and dpaa2-switch
drivers) to only surround the phylink calls that require it, in the
dpaa2-mac library code.
This is possible because dpaa2_mac_connect() and dpaa2_mac_disconnect()
run unlocked, and there isn't any danger of an AB/BA deadlock between
the rtnl_mutex and other private locks.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Tested-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
---
drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c | 4 ----
drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c | 5 +++++
drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c | 4 ----
3 files changed, 5 insertions(+), 8 deletions(-)
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c
@@ -4530,7 +4530,6 @@ static irqreturn_t dpni_irq0_handler_thr
dpaa2_eth_set_mac_addr(netdev_priv(net_dev));
dpaa2_eth_update_tx_fqids(priv);
- rtnl_lock();
/* We can avoid locking because the "endpoint changed" IRQ
* handler is the only one who changes priv->mac at runtime,
* so we are not racing with anyone.
@@ -4540,7 +4539,6 @@ static irqreturn_t dpni_irq0_handler_thr
dpaa2_eth_disconnect_mac(priv);
else
dpaa2_eth_connect_mac(priv);
- rtnl_unlock();
}
return IRQ_HANDLED;
@@ -4859,9 +4857,7 @@ static int dpaa2_eth_remove(struct fsl_m
else
fsl_mc_free_irqs(ls_dev);
- rtnl_lock();
dpaa2_eth_disconnect_mac(priv);
- rtnl_unlock();
dpaa2_eth_free_rings(priv);
free_percpu(priv->fd);
free_percpu(priv->sgt_cache);
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-mac.c
@@ -428,7 +428,9 @@ int dpaa2_mac_connect(struct dpaa2_mac *
}
mac->phylink = phylink;
+ rtnl_lock();
err = phylink_fwnode_phy_connect(mac->phylink, dpmac_node, 0);
+ rtnl_unlock();
if (err) {
netdev_err(net_dev, "phylink_fwnode_phy_connect() = %d\n", err);
goto err_phylink_destroy;
@@ -446,7 +448,10 @@ err_pcs_destroy:
void dpaa2_mac_disconnect(struct dpaa2_mac *mac)
{
+ rtnl_lock();
phylink_disconnect_phy(mac->phylink);
+ rtnl_unlock();
+
phylink_destroy(mac->phylink);
dpaa2_pcs_destroy(mac);
of_phy_put(mac->serdes_phy);
--- a/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
+++ b/drivers/net/ethernet/freescale/dpaa2/dpaa2-switch.c
@@ -1530,7 +1530,6 @@ static irqreturn_t dpaa2_switch_irq0_han
}
if (status & DPSW_IRQ_EVENT_ENDPOINT_CHANGED) {
- rtnl_lock();
/* We can avoid locking because the "endpoint changed" IRQ
* handler is the only one who changes priv->mac at runtime,
* so we are not racing with anyone.
@@ -1540,7 +1539,6 @@ static irqreturn_t dpaa2_switch_irq0_han
dpaa2_switch_port_disconnect_mac(port_priv);
else
dpaa2_switch_port_connect_mac(port_priv);
- rtnl_unlock();
}
out:
@@ -2951,9 +2949,7 @@ static void dpaa2_switch_remove_port(str
{
struct ethsw_port_priv *port_priv = ethsw->ports[port_idx];
- rtnl_lock();
dpaa2_switch_port_disconnect_mac(port_priv);
- rtnl_unlock();
free_netdev(port_priv->netdev);
ethsw->ports[port_idx] = NULL;
}

4
target/linux/armsr/patches-6.1/221-armsr-disable_gc_sections_armv7.patch → target/linux/armsr/patches-6.6/221-armsr-disable_gc_sections_armv7.patch
View File

@ -13,8 +13,8 @@ Signed-off-by: Mathew McBride <matt@traverse.com.au>
--- a/arch/arm/Kconfig
+++ b/arch/arm/Kconfig
@@ -124,7 +124,6 @@ config ARM
select HAVE_VIRT_CPU_ACCOUNTING_GEN
@@ -128,7 +128,6 @@ config ARM
select HOTPLUG_CORE_SYNC_DEAD if HOTPLUG_CPU
select IRQ_FORCED_THREADING
select LOCK_MM_AND_FIND_VMA
- select HAVE_LD_DEAD_CODE_DATA_ELIMINATION