* Re: [PATCH -next] bpf: Use PTR_ERR_OR_ZERO in xsk_map_inc()
From: Daniel Borkmann @ 2019-08-20 15:09 UTC (permalink / raw)
To: YueHaibing, bjorn.topel, magnus.karlsson, jonathan.lemon, ast,
kafai, songliubraving, yhs, john.fastabend
Cc: netdev, bpf, kernel-janitors
In-Reply-To: <20190820013652.147041-1-yuehaibing@huawei.com>
On 8/20/19 3:36 AM, YueHaibing wrote:
> Use PTR_ERR_OR_ZERO rather than if(IS_ERR(...)) + PTR_ERR
>
> Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Applied, thanks!
^ permalink raw reply
* [PATCH 1/6] dt-bindings: net: sun8i-a83t-emac: Add phy-supply property
From: megous @ 2019-08-20 14:53 UTC (permalink / raw)
To: David S. Miller, Rob Herring, Mark Rutland, Maxime Ripard,
Chen-Yu Tsai, Giuseppe Cavallaro, Alexandre Torgue, Jose Abreu,
Maxime Coquelin
Cc: Ondrej Jirman, netdev, devicetree, linux-arm-kernel, linux-kernel,
linux-stm32
In-Reply-To: <20190820145343.29108-1-megous@megous.com>
From: Ondrej Jirman <megous@megous.com>
This is already supported by the driver, but is missing from the
bindings.
Signed-off-by: Ondrej Jirman <megous@megous.com>
---
.../devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
index 3fb0714e761e..304f244e9ab5 100644
--- a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
+++ b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
@@ -43,6 +43,10 @@ properties:
Phandle to the device containing the EMAC or GMAC clock
register
+ phy-supply:
+ description:
+ PHY regulator
+
required:
- compatible
- reg
--
2.22.1
^ permalink raw reply related
* [PATCH 0/6] Add ethernet support for Orange Pi 3
From: megous @ 2019-08-20 14:53 UTC (permalink / raw)
To: David S. Miller, Rob Herring, Mark Rutland, Maxime Ripard,
Chen-Yu Tsai, Giuseppe Cavallaro, Alexandre Torgue, Jose Abreu,
Maxime Coquelin
Cc: Ondrej Jirman, netdev, devicetree, linux-arm-kernel, linux-kernel,
linux-stm32
From: Ondrej Jirman <megous@megous.com>
This series implements ethernet support for Xunlong Orange Pi 3 board, by:
- making small cleanups of existing dwmac-sun8i code
- adding DT bindings docummentation
- adding support for phy-io-supply to dwmac-sun8i code
- adding DT configuration for Orange Pi 3 board
For some people, ethernet doesn't work after reboot because u-boot doesn't
support AXP805 PMIC, and will not turn off the etherent PHY regulators.
So the regulator controlled by gpio will be shut down, but the other one
controlled by the AXP PMIC will not.
This is a problem only when running with a builtin driver. This needs
to be fixed in u-boot and should not prevent these patches from being
merged.
This evolved out of the Orange Pi 3 patches series, as I didn't want
to stretch that out any longer.
Please take a look.
thank you and regards,
Ondrej Jirman
Ondrej Jirman (6):
dt-bindings: net: sun8i-a83t-emac: Add phy-supply property
dt-bindings: net: sun8i-a83t-emac: Add phy-io-supply property
net: stmmac: sun8i: Use devm_regulator_get for PHY regulator
net: stmmac: sun8i: Rename PHY regulator variable to regulator_phy
net: stmmac: sun8i: Add support for enabling a regulator for PHY I/O
pins
arm64: dts: allwinner: orange-pi-3: Enable ethernet
.../net/allwinner,sun8i-a83t-emac.yaml | 8 ++
.../dts/allwinner/sun50i-h6-orangepi-3.dts | 40 ++++++++++
.../net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 74 ++++++++++++-------
3 files changed, 96 insertions(+), 26 deletions(-)
--
2.22.1
^ permalink raw reply
* [PATCH 3/6] net: stmmac: sun8i: Use devm_regulator_get for PHY regulator
From: megous @ 2019-08-20 14:53 UTC (permalink / raw)
To: David S. Miller, Rob Herring, Mark Rutland, Maxime Ripard,
Chen-Yu Tsai, Giuseppe Cavallaro, Alexandre Torgue, Jose Abreu,
Maxime Coquelin
Cc: Ondrej Jirman, netdev, devicetree, linux-arm-kernel, linux-kernel,
linux-stm32
In-Reply-To: <20190820145343.29108-1-megous@megous.com>
From: Ondrej Jirman <megous@megous.com>
Use devm_regulator_get instead of devm_regulator_get_optional and rely
on dummy supply. This avoids NULL checks before regulator_enable/disable
calls.
This path also improves error reporting, because we now report both
use of dummy supply and error during registration with more detail,
instead of generic info level message "No regulator found" that
was reported previously on errors and lack of regulator property in DT.
Finally, we'll be adding further optional regulators, and the overall
code will be simpler.
Signed-off-by: Ondrej Jirman <megous@megous.com>
---
.../net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 23 ++++++++-----------
1 file changed, 10 insertions(+), 13 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index 4083019c547a..3e951a11aec3 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -528,12 +528,10 @@ static int sun8i_dwmac_init(struct platform_device *pdev, void *priv)
struct sunxi_priv_data *gmac = priv;
int ret;
- if (gmac->regulator) {
- ret = regulator_enable(gmac->regulator);
- if (ret) {
- dev_err(&pdev->dev, "Fail to enable regulator\n");
- return ret;
- }
+ ret = regulator_enable(gmac->regulator);
+ if (ret) {
+ dev_err(&pdev->dev, "Fail to enable regulator\n");
+ return ret;
}
ret = clk_prepare_enable(gmac->tx_clk);
@@ -992,8 +990,7 @@ static void sun8i_dwmac_exit(struct platform_device *pdev, void *priv)
clk_disable_unprepare(gmac->tx_clk);
- if (gmac->regulator)
- regulator_disable(gmac->regulator);
+ regulator_disable(gmac->regulator);
}
static void sun8i_dwmac_set_mac_loopback(void __iomem *ioaddr, bool enable)
@@ -1129,12 +1126,12 @@ static int sun8i_dwmac_probe(struct platform_device *pdev)
}
/* Optional regulator for PHY */
- gmac->regulator = devm_regulator_get_optional(dev, "phy");
+ gmac->regulator = devm_regulator_get(dev, "phy");
if (IS_ERR(gmac->regulator)) {
- if (PTR_ERR(gmac->regulator) == -EPROBE_DEFER)
- return -EPROBE_DEFER;
- dev_info(dev, "No regulator found\n");
- gmac->regulator = NULL;
+ ret = PTR_ERR(gmac->regulator);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "Failed to get PHY regulator (%d)\n", ret);
+ return ret;
}
/* The "GMAC clock control" register might be located in the
--
2.22.1
^ permalink raw reply related
* [PATCH 4/6] net: stmmac: sun8i: Rename PHY regulator variable to regulator_phy
From: megous @ 2019-08-20 14:53 UTC (permalink / raw)
To: David S. Miller, Rob Herring, Mark Rutland, Maxime Ripard,
Chen-Yu Tsai, Giuseppe Cavallaro, Alexandre Torgue, Jose Abreu,
Maxime Coquelin
Cc: Ondrej Jirman, netdev, devicetree, linux-arm-kernel, linux-kernel,
linux-stm32
In-Reply-To: <20190820145343.29108-1-megous@megous.com>
From: Ondrej Jirman <megous@megous.com>
We'll be adding further optional regulators, and this makes it clearer
what the regulator is for.
Signed-off-by: Ondrej Jirman <megous@megous.com>
---
.../net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 32 ++++++++++---------
1 file changed, 17 insertions(+), 15 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index 3e951a11aec3..e7df30d3cab1 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -57,19 +57,21 @@ struct emac_variant {
};
/* struct sunxi_priv_data - hold all sunxi private data
- * @tx_clk: reference to MAC TX clock
- * @ephy_clk: reference to the optional EPHY clock for the internal PHY
- * @regulator: reference to the optional regulator
- * @rst_ephy: reference to the optional EPHY reset for the internal PHY
- * @variant: reference to the current board variant
- * @regmap: regmap for using the syscon
- * @internal_phy_powered: Does the internal PHY is enabled
- * @mux_handle: Internal pointer used by mdio-mux lib
+ * @tx_clk: reference to MAC TX clock
+ * @ephy_clk: reference to the optional EPHY clock for
+ * the internal PHY
+ * @regulator_phy: reference to the optional regulator
+ * @rst_ephy: reference to the optional EPHY reset for
+ * the internal PHY
+ * @variant: reference to the current board variant
+ * @regmap: regmap for using the syscon
+ * @internal_phy_powered: Does the internal PHY is enabled
+ * @mux_handle: Internal pointer used by mdio-mux lib
*/
struct sunxi_priv_data {
struct clk *tx_clk;
struct clk *ephy_clk;
- struct regulator *regulator;
+ struct regulator *regulator_phy;
struct reset_control *rst_ephy;
const struct emac_variant *variant;
struct regmap_field *regmap_field;
@@ -528,9 +530,9 @@ static int sun8i_dwmac_init(struct platform_device *pdev, void *priv)
struct sunxi_priv_data *gmac = priv;
int ret;
- ret = regulator_enable(gmac->regulator);
+ ret = regulator_enable(gmac->regulator_phy);
if (ret) {
- dev_err(&pdev->dev, "Fail to enable regulator\n");
+ dev_err(&pdev->dev, "Fail to enable PHY regulator\n");
return ret;
}
@@ -990,7 +992,7 @@ static void sun8i_dwmac_exit(struct platform_device *pdev, void *priv)
clk_disable_unprepare(gmac->tx_clk);
- regulator_disable(gmac->regulator);
+ regulator_disable(gmac->regulator_phy);
}
static void sun8i_dwmac_set_mac_loopback(void __iomem *ioaddr, bool enable)
@@ -1126,9 +1128,9 @@ static int sun8i_dwmac_probe(struct platform_device *pdev)
}
/* Optional regulator for PHY */
- gmac->regulator = devm_regulator_get(dev, "phy");
- if (IS_ERR(gmac->regulator)) {
- ret = PTR_ERR(gmac->regulator);
+ gmac->regulator_phy = devm_regulator_get(dev, "phy");
+ if (IS_ERR(gmac->regulator_phy)) {
+ ret = PTR_ERR(gmac->regulator_phy);
if (ret != -EPROBE_DEFER)
dev_err(dev, "Failed to get PHY regulator (%d)\n", ret);
return ret;
--
2.22.1
^ permalink raw reply related
* [PATCH 5/6] net: stmmac: sun8i: Add support for enabling a regulator for PHY I/O pins
From: megous @ 2019-08-20 14:53 UTC (permalink / raw)
To: David S. Miller, Rob Herring, Mark Rutland, Maxime Ripard,
Chen-Yu Tsai, Giuseppe Cavallaro, Alexandre Torgue, Jose Abreu,
Maxime Coquelin
Cc: Ondrej Jirman, netdev, devicetree, linux-arm-kernel, linux-kernel,
linux-stm32
In-Reply-To: <20190820145343.29108-1-megous@megous.com>
From: Ondrej Jirman <megous@megous.com>
Orange Pi 3 has two regulators that power the Realtek RTL8211E. According
to the phy datasheet, both regulators need to be enabled at the same time.
Add support for the second optional regulator, "phy-io", to the glue
driver.
Signed-off-by: Ondrej Jirman <megous@megous.com>
---
.../net/ethernet/stmicro/stmmac/dwmac-sun8i.c | 31 ++++++++++++++++---
1 file changed, 27 insertions(+), 4 deletions(-)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
index e7df30d3cab1..e96337b7cd12 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-sun8i.c
@@ -61,6 +61,8 @@ struct emac_variant {
* @ephy_clk: reference to the optional EPHY clock for
* the internal PHY
* @regulator_phy: reference to the optional regulator
+ * @regulator_phy_io: reference to the optional regulator for
+ * PHY I/O pins
* @rst_ephy: reference to the optional EPHY reset for
* the internal PHY
* @variant: reference to the current board variant
@@ -72,6 +74,7 @@ struct sunxi_priv_data {
struct clk *tx_clk;
struct clk *ephy_clk;
struct regulator *regulator_phy;
+ struct regulator *regulator_phy_io;
struct reset_control *rst_ephy;
const struct emac_variant *variant;
struct regmap_field *regmap_field;
@@ -530,21 +533,30 @@ static int sun8i_dwmac_init(struct platform_device *pdev, void *priv)
struct sunxi_priv_data *gmac = priv;
int ret;
+ ret = regulator_enable(gmac->regulator_phy_io);
+ if (ret) {
+ dev_err(&pdev->dev, "Fail to enable PHY I/O regulator\n");
+ return ret;
+ }
+
ret = regulator_enable(gmac->regulator_phy);
if (ret) {
dev_err(&pdev->dev, "Fail to enable PHY regulator\n");
- return ret;
+ goto err_disable_regulator_phy_io;
}
ret = clk_prepare_enable(gmac->tx_clk);
if (ret) {
- if (gmac->regulator)
- regulator_disable(gmac->regulator);
dev_err(&pdev->dev, "Could not enable AHB clock\n");
- return ret;
+ goto err_disable_regulator_phy;
}
return 0;
+err_disable_regulator_phy:
+ regulator_disable(gmac->regulator_phy);
+err_disable_regulator_phy_io:
+ regulator_disable(gmac->regulator_phy_io);
+ return ret;
}
static void sun8i_dwmac_core_init(struct mac_device_info *hw,
@@ -993,6 +1005,7 @@ static void sun8i_dwmac_exit(struct platform_device *pdev, void *priv)
clk_disable_unprepare(gmac->tx_clk);
regulator_disable(gmac->regulator_phy);
+ regulator_disable(gmac->regulator_phy_io);
}
static void sun8i_dwmac_set_mac_loopback(void __iomem *ioaddr, bool enable)
@@ -1136,6 +1149,16 @@ static int sun8i_dwmac_probe(struct platform_device *pdev)
return ret;
}
+ /* Optional regulator for PHY I/O pins */
+ gmac->regulator_phy_io = devm_regulator_get(dev, "phy-io");
+ if (IS_ERR(gmac->regulator_phy_io)) {
+ ret = PTR_ERR(gmac->regulator_phy_io);
+ if (ret != -EPROBE_DEFER)
+ dev_err(dev, "Failed to get PHY I/O regulator (%d)\n",
+ ret);
+ return ret;
+ }
+
/* The "GMAC clock control" register might be located in the
* CCU address range (on the R40), or the system control address
* range (on most other sun8i and later SoCs).
--
2.22.1
^ permalink raw reply related
* [PATCH 6/6] arm64: dts: allwinner: orange-pi-3: Enable ethernet
From: megous @ 2019-08-20 14:53 UTC (permalink / raw)
To: David S. Miller, Rob Herring, Mark Rutland, Maxime Ripard,
Chen-Yu Tsai, Giuseppe Cavallaro, Alexandre Torgue, Jose Abreu,
Maxime Coquelin
Cc: Ondrej Jirman, netdev, devicetree, linux-arm-kernel, linux-kernel,
linux-stm32
In-Reply-To: <20190820145343.29108-1-megous@megous.com>
From: Ondrej Jirman <megous@megous.com>
Orange Pi 3 has two regulators that power the Realtek RTL8211E
PHY. According to the datasheet, both regulators need to be enabled
at the same time, or that "phy-io" should be enabled slightly earlier
than "phy" regulator.
RTL8211E/RTL8211EG datasheet says:
Note 4: 2.5V (or 1.8/1.5V) RGMII power should be risen simultaneously
or slightly earlier than 3.3V power. Rising 2.5V (or 1.8/1.5V) power
later than 3.3V power may lead to errors.
The driver ensures the regulator enable ordering. The timing is set
in DT via startup-delay-us.
We also need to wait at least 30ms after power-up/reset, before
accessing the PHY registers.
All values of RX/TX delay were tested exhaustively and a middle one
of the range of working values was chosen.
Signed-off-by: Ondrej Jirman <megous@megous.com>
---
.../dts/allwinner/sun50i-h6-orangepi-3.dts | 40 +++++++++++++++++++
1 file changed, 40 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
index eda9d5f640b9..18349e60b8c6 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-h6-orangepi-3.dts
@@ -15,6 +15,7 @@
aliases {
serial0 = &uart0;
+ ethernet0 = &emac;
};
chosen {
@@ -56,6 +57,15 @@
regulator-max-microvolt = <5000000>;
regulator-always-on;
};
+
+ reg_gmac_2v5: gmac-2v5 {
+ compatible = "regulator-fixed";
+ regulator-name = "gmac-2v5";
+ regulator-min-microvolt = <2500000>;
+ regulator-max-microvolt = <2500000>;
+ enable-active-high;
+ gpio = <&pio 3 6 GPIO_ACTIVE_HIGH>; /* PD6 */
+ };
};
&cpu0 {
@@ -74,6 +84,35 @@
status = "okay";
};
+&emac {
+ pinctrl-names = "default";
+ pinctrl-0 = <&ext_rgmii_pins>;
+ phy-mode = "rgmii";
+ phy-handle = <&ext_rgmii_phy>;
+ /*
+ * The board uses 2.5V RGMII signalling. Power sequence to enable
+ * the phy is to enable GMAC-2V5 and GMAC-3V (aldo2) power rails
+ * at the same time and to wait 100ms. The driver enables phy-io
+ * first. Delay is achieved with enable-ramp-delay on reg_aldo2.
+ */
+ phy-supply = <®_aldo2>;
+ phy-io-supply = <®_gmac_2v5>;
+ allwinner,rx-delay-ps = <1500>;
+ allwinner,tx-delay-ps = <700>;
+ status = "okay";
+};
+
+&mdio {
+ ext_rgmii_phy: ethernet-phy@1 {
+ compatible = "ethernet-phy-ieee802.3-c22";
+ reg = <1>;
+
+ reset-gpios = <&pio 3 14 GPIO_ACTIVE_LOW>; /* PD14 */
+ reset-assert-us = <15000>;
+ reset-deassert-us = <40000>;
+ };
+};
+
&hdmi {
status = "okay";
};
@@ -136,6 +175,7 @@
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-name = "vcc33-audio-tv-ephy-mac";
+ regulator-enable-ramp-delay = <100000>;
};
/* ALDO3 is shorted to CLDO1 */
--
2.22.1
^ permalink raw reply related
* [PATCH 2/6] dt-bindings: net: sun8i-a83t-emac: Add phy-io-supply property
From: megous @ 2019-08-20 14:53 UTC (permalink / raw)
To: David S. Miller, Rob Herring, Mark Rutland, Maxime Ripard,
Chen-Yu Tsai, Giuseppe Cavallaro, Alexandre Torgue, Jose Abreu,
Maxime Coquelin
Cc: Ondrej Jirman, netdev, devicetree, linux-arm-kernel, linux-kernel,
linux-stm32
In-Reply-To: <20190820145343.29108-1-megous@megous.com>
From: Ondrej Jirman <megous@megous.com>
Some PHYs require separate power supply for I/O pins in some modes
of operation. Add phy-io-supply property, to allow enabling this
power supply.
Signed-off-by: Ondrej Jirman <megous@megous.com>
---
.../devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
index 304f244e9ab5..782e202aa124 100644
--- a/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
+++ b/Documentation/devicetree/bindings/net/allwinner,sun8i-a83t-emac.yaml
@@ -47,6 +47,10 @@ properties:
description:
PHY regulator
+ phy-io-supply:
+ description:
+ PHY I/O pins regulator
+
required:
- compatible
- reg
--
2.22.1
^ permalink raw reply related
* [PATCH net-next 2/9] s390/qeth: propagate length of processed cmd IO data to callback
From: Julian Wiedmann @ 2019-08-20 14:46 UTC (permalink / raw)
To: David Miller
Cc: netdev, linux-s390, Heiko Carstens, Stefan Raspl, Ursula Braun,
Julian Wiedmann
In-Reply-To: <20190820144643.64041-1-jwi@linux.ibm.com>
When an cmd IO completes in qeth_irq(), calculate how much data was
processed by the device and pass this value to the cmd's callback.
This allows cmds that retrieve data from the device to check whether
sufficient data was received, so we do that in qeth_read_conf_data_cb().
Suggested-by: Jens Remus <jremus@linux.ibm.com>
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
---
drivers/s390/net/qeth_core.h | 3 ++-
drivers/s390/net/qeth_core_main.c | 40 ++++++++++++++++++++++++-------
drivers/s390/net/qeth_l2_main.c | 3 ++-
3 files changed, 35 insertions(+), 11 deletions(-)
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 47e01cdd1775..4e21aa8edb13 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -580,7 +580,8 @@ struct qeth_cmd_buffer {
long timeout;
unsigned char *data;
void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob);
- void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob);
+ void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob,
+ unsigned int data_length);
};
static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob)
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 50f2773a1f8c..f7a8b8301eb4 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -63,7 +63,8 @@ static struct device *qeth_core_root_dev;
static struct lock_class_key qdio_out_skb_queue_key;
static void qeth_issue_next_read_cb(struct qeth_card *card,
- struct qeth_cmd_buffer *iob);
+ struct qeth_cmd_buffer *iob,
+ unsigned int data_length);
static void qeth_free_buffer_pool(struct qeth_card *);
static int qeth_qdio_establish(struct qeth_card *);
static void qeth_free_qdio_queues(struct qeth_card *card);
@@ -702,7 +703,8 @@ void qeth_put_cmd(struct qeth_cmd_buffer *iob)
EXPORT_SYMBOL_GPL(qeth_put_cmd);
static void qeth_release_buffer_cb(struct qeth_card *card,
- struct qeth_cmd_buffer *iob)
+ struct qeth_cmd_buffer *iob,
+ unsigned int data_length)
{
qeth_put_cmd(iob);
}
@@ -745,7 +747,8 @@ struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
EXPORT_SYMBOL_GPL(qeth_alloc_cmd);
static void qeth_issue_next_read_cb(struct qeth_card *card,
- struct qeth_cmd_buffer *iob)
+ struct qeth_cmd_buffer *iob,
+ unsigned int data_length)
{
struct qeth_ipa_cmd *cmd = NULL;
struct qeth_reply *reply = NULL;
@@ -1072,8 +1075,16 @@ static void qeth_irq(struct ccw_device *cdev, unsigned long intparm,
}
}
- if (iob && iob->callback)
- iob->callback(card, iob);
+ if (iob) {
+ /* sanity check: */
+ if (irb->scsw.cmd.count > iob->length) {
+ qeth_cancel_cmd(iob, -EIO);
+ goto out;
+ }
+ if (iob->callback)
+ iob->callback(card, iob,
+ iob->length - irb->scsw.cmd.count);
+ }
out:
wake_up(&card->wait_q);
@@ -1782,12 +1793,20 @@ struct qeth_node_desc {
};
static void qeth_read_conf_data_cb(struct qeth_card *card,
- struct qeth_cmd_buffer *iob)
+ struct qeth_cmd_buffer *iob,
+ unsigned int data_length)
{
struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
+ int rc = 0;
u8 *tag;
QETH_CARD_TEXT(card, 2, "cfgunit");
+
+ if (data_length < sizeof(*nd)) {
+ rc = -EINVAL;
+ goto out;
+ }
+
card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
nd->nd1.plant[1] == _ascebc['M'];
tag = (u8 *)&nd->nd1.tag;
@@ -1802,7 +1821,8 @@ static void qeth_read_conf_data_cb(struct qeth_card *card,
nd->nd3.model[2] >= 0xF1 &&
nd->nd3.model[2] <= 0xF4;
- qeth_notify_reply(iob->reply, 0);
+out:
+ qeth_notify_reply(iob->reply, rc);
qeth_put_cmd(iob);
}
@@ -1865,7 +1885,8 @@ static int qeth_idx_check_activate_response(struct qeth_card *card,
}
static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
- struct qeth_cmd_buffer *iob)
+ struct qeth_cmd_buffer *iob,
+ unsigned int data_length)
{
struct qeth_channel *channel = iob->channel;
u16 peer_level;
@@ -1898,7 +1919,8 @@ static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
}
static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
- struct qeth_cmd_buffer *iob)
+ struct qeth_cmd_buffer *iob,
+ unsigned int data_length)
{
struct qeth_channel *channel = iob->channel;
u16 peer_level;
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index cbead3d1b2fd..c524c8bff3c7 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -1000,7 +1000,8 @@ struct qeth_discipline qeth_l2_discipline = {
EXPORT_SYMBOL_GPL(qeth_l2_discipline);
static void qeth_osn_assist_cb(struct qeth_card *card,
- struct qeth_cmd_buffer *iob)
+ struct qeth_cmd_buffer *iob,
+ unsigned int data_length)
{
qeth_notify_reply(iob->reply, 0);
qeth_put_cmd(iob);
--
2.17.1
^ permalink raw reply related
* [PATCH net-next 5/9] s390/qeth: merge qeth_reply struct into qeth_cmd_buffer
From: Julian Wiedmann @ 2019-08-20 14:46 UTC (permalink / raw)
To: David Miller
Cc: netdev, linux-s390, Heiko Carstens, Stefan Raspl, Ursula Braun,
Julian Wiedmann
In-Reply-To: <20190820144643.64041-1-jwi@linux.ibm.com>
Except for card->read_cmd, every cmd we issue now passes through
qeth_send_control_data() and allocates a qeth_reply struct. The way we
use this struct requires additional refcounting, and pointer tracking.
Clean up things by moving most of qeth_reply's content into the main
cmd struct. This keeps things in one place, saves us the additional
refcounting and simplifies the overall code flow.
A nice little benefit is that we can now match incoming replies against
the pending requests themselves, without caching the requests' seqnos.
The qeth_reply struct stays around for a little bit longer in a shrunk
form, to avoid touching every single callback.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
---
drivers/s390/net/qeth_core.h | 26 +++---
drivers/s390/net/qeth_core_main.c | 126 +++++++++++-------------------
drivers/s390/net/qeth_core_mpc.h | 1 -
drivers/s390/net/qeth_l2_main.c | 2 +-
4 files changed, 58 insertions(+), 97 deletions(-)
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index f6e58a51c366..f07bb7130280 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -572,16 +572,26 @@ struct qeth_channel {
atomic_t irq_pending;
};
+struct qeth_reply {
+ int (*callback)(struct qeth_card *card, struct qeth_reply *reply,
+ unsigned long data);
+ void *param;
+};
+
struct qeth_cmd_buffer {
+ struct list_head list;
+ struct completion done;
+ spinlock_t lock;
unsigned int length;
refcount_t ref_count;
struct qeth_channel *channel;
- struct qeth_reply *reply;
+ struct qeth_reply reply;
long timeout;
unsigned char *data;
void (*finalize)(struct qeth_card *card, struct qeth_cmd_buffer *iob);
void (*callback)(struct qeth_card *card, struct qeth_cmd_buffer *iob,
unsigned int data_length);
+ int rc;
};
static inline void qeth_get_cmd(struct qeth_cmd_buffer *iob)
@@ -627,18 +637,6 @@ struct qeth_seqno {
__u16 ipa;
};
-struct qeth_reply {
- struct list_head list;
- struct completion received;
- spinlock_t lock;
- int (*callback)(struct qeth_card *, struct qeth_reply *,
- unsigned long);
- u32 seqno;
- int rc;
- void *param;
- refcount_t refcnt;
-};
-
struct qeth_card_blkt {
int time_total;
int inter_packet;
@@ -994,6 +992,7 @@ struct qeth_cmd_buffer *qeth_get_setassparms_cmd(struct qeth_card *card,
struct qeth_cmd_buffer *qeth_get_diag_cmd(struct qeth_card *card,
enum qeth_diags_cmds sub_cmd,
unsigned int data_length);
+void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason);
void qeth_put_cmd(struct qeth_cmd_buffer *iob);
struct sk_buff *qeth_core_get_next_skb(struct qeth_card *,
@@ -1008,7 +1007,6 @@ void qeth_drain_output_queues(struct qeth_card *card);
void qeth_setadp_promisc_mode(struct qeth_card *);
int qeth_setadpparms_change_macaddr(struct qeth_card *);
void qeth_tx_timeout(struct net_device *);
-void qeth_notify_reply(struct qeth_reply *reply, int reason);
void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
u16 cmd_length);
int qeth_query_switch_attributes(struct qeth_card *card,
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 3fc14f222dc3..95996ce99145 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -537,50 +537,28 @@ static int qeth_issue_next_read(struct qeth_card *card)
return ret;
}
-static struct qeth_reply *qeth_alloc_reply(struct qeth_card *card)
-{
- struct qeth_reply *reply;
-
- reply = kzalloc(sizeof(*reply), GFP_KERNEL);
- if (reply) {
- refcount_set(&reply->refcnt, 1);
- init_completion(&reply->received);
- spin_lock_init(&reply->lock);
- }
- return reply;
-}
-
-static void qeth_get_reply(struct qeth_reply *reply)
-{
- refcount_inc(&reply->refcnt);
-}
-
-static void qeth_put_reply(struct qeth_reply *reply)
-{
- if (refcount_dec_and_test(&reply->refcnt))
- kfree(reply);
-}
-
-static void qeth_enqueue_reply(struct qeth_card *card, struct qeth_reply *reply)
+static void qeth_enqueue_cmd(struct qeth_card *card,
+ struct qeth_cmd_buffer *iob)
{
spin_lock_irq(&card->lock);
- list_add_tail(&reply->list, &card->cmd_waiter_list);
+ list_add_tail(&iob->list, &card->cmd_waiter_list);
spin_unlock_irq(&card->lock);
}
-static void qeth_dequeue_reply(struct qeth_card *card, struct qeth_reply *reply)
+static void qeth_dequeue_cmd(struct qeth_card *card,
+ struct qeth_cmd_buffer *iob)
{
spin_lock_irq(&card->lock);
- list_del(&reply->list);
+ list_del(&iob->list);
spin_unlock_irq(&card->lock);
}
-void qeth_notify_reply(struct qeth_reply *reply, int reason)
+void qeth_notify_cmd(struct qeth_cmd_buffer *iob, int reason)
{
- reply->rc = reason;
- complete(&reply->received);
+ iob->rc = reason;
+ complete(&iob->done);
}
-EXPORT_SYMBOL_GPL(qeth_notify_reply);
+EXPORT_SYMBOL_GPL(qeth_notify_cmd);
static void qeth_issue_ipa_msg(struct qeth_ipa_cmd *cmd, int rc,
struct qeth_card *card)
@@ -658,14 +636,14 @@ static struct qeth_ipa_cmd *qeth_check_ipa_data(struct qeth_card *card,
void qeth_clear_ipacmd_list(struct qeth_card *card)
{
- struct qeth_reply *reply;
+ struct qeth_cmd_buffer *iob;
unsigned long flags;
QETH_CARD_TEXT(card, 4, "clipalst");
spin_lock_irqsave(&card->lock, flags);
- list_for_each_entry(reply, &card->cmd_waiter_list, list)
- qeth_notify_reply(reply, -EIO);
+ list_for_each_entry(iob, &card->cmd_waiter_list, list)
+ qeth_notify_cmd(iob, -EIO);
spin_unlock_irqrestore(&card->lock, flags);
}
EXPORT_SYMBOL_GPL(qeth_clear_ipacmd_list);
@@ -694,8 +672,6 @@ static int qeth_check_idx_response(struct qeth_card *card,
void qeth_put_cmd(struct qeth_cmd_buffer *iob)
{
if (refcount_dec_and_test(&iob->ref_count)) {
- if (iob->reply)
- qeth_put_reply(iob->reply);
kfree(iob->data);
kfree(iob);
}
@@ -711,10 +687,7 @@ static void qeth_release_buffer_cb(struct qeth_card *card,
static void qeth_cancel_cmd(struct qeth_cmd_buffer *iob, int rc)
{
- struct qeth_reply *reply = iob->reply;
-
- if (reply)
- qeth_notify_reply(reply, rc);
+ qeth_notify_cmd(iob, rc);
qeth_put_cmd(iob);
}
@@ -738,6 +711,9 @@ struct qeth_cmd_buffer *qeth_alloc_cmd(struct qeth_channel *channel,
return NULL;
}
+ init_completion(&iob->done);
+ spin_lock_init(&iob->lock);
+ INIT_LIST_HEAD(&iob->list);
refcount_set(&iob->ref_count, 1);
iob->channel = channel;
iob->timeout = timeout;
@@ -750,9 +726,10 @@ static void qeth_issue_next_read_cb(struct qeth_card *card,
struct qeth_cmd_buffer *iob,
unsigned int data_length)
{
+ struct qeth_cmd_buffer *request = NULL;
struct qeth_ipa_cmd *cmd = NULL;
struct qeth_reply *reply = NULL;
- struct qeth_reply *r;
+ struct qeth_cmd_buffer *tmp;
unsigned long flags;
int rc = 0;
@@ -787,39 +764,39 @@ static void qeth_issue_next_read_cb(struct qeth_card *card,
/* match against pending cmd requests */
spin_lock_irqsave(&card->lock, flags);
- list_for_each_entry(r, &card->cmd_waiter_list, list) {
- if ((r->seqno == QETH_IDX_COMMAND_SEQNO) ||
- (cmd && (r->seqno == cmd->hdr.seqno))) {
- reply = r;
+ list_for_each_entry(tmp, &card->cmd_waiter_list, list) {
+ if (!IS_IPA(tmp->data) ||
+ __ipa_cmd(tmp)->hdr.seqno == cmd->hdr.seqno) {
+ request = tmp;
/* take the object outside the lock */
- qeth_get_reply(reply);
+ qeth_get_cmd(request);
break;
}
}
spin_unlock_irqrestore(&card->lock, flags);
- if (!reply)
+ if (!request)
goto out;
+ reply = &request->reply;
if (!reply->callback) {
rc = 0;
goto no_callback;
}
- spin_lock_irqsave(&reply->lock, flags);
- if (reply->rc)
+ spin_lock_irqsave(&request->lock, flags);
+ if (request->rc)
/* Bail out when the requestor has already left: */
- rc = reply->rc;
+ rc = request->rc;
else
rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
(unsigned long)iob);
- spin_unlock_irqrestore(&reply->lock, flags);
+ spin_unlock_irqrestore(&request->lock, flags);
no_callback:
if (rc <= 0)
- qeth_notify_reply(reply, rc);
- qeth_put_reply(reply);
-
+ qeth_notify_cmd(request, rc);
+ qeth_put_cmd(request);
out:
memcpy(&card->seqno.pdu_hdr_ack,
QETH_PDU_HEADER_SEQ_NO(iob->data),
@@ -1658,7 +1635,6 @@ static void qeth_mpc_finalize_cmd(struct qeth_card *card,
memcpy(QETH_PDU_HEADER_ACK_SEQ_NO(iob->data),
&card->seqno.pdu_hdr_ack, QETH_SEQ_NO_LENGTH);
- iob->reply->seqno = QETH_IDX_COMMAND_SEQNO;
iob->callback = qeth_release_buffer_cb;
}
@@ -1709,29 +1685,19 @@ static int qeth_send_control_data(struct qeth_card *card,
void *reply_param)
{
struct qeth_channel *channel = iob->channel;
+ struct qeth_reply *reply = &iob->reply;
long timeout = iob->timeout;
int rc;
- struct qeth_reply *reply = NULL;
QETH_CARD_TEXT(card, 2, "sendctl");
- reply = qeth_alloc_reply(card);
- if (!reply) {
- qeth_put_cmd(iob);
- return -ENOMEM;
- }
reply->callback = reply_cb;
reply->param = reply_param;
- /* pairs with qeth_put_cmd(): */
- qeth_get_reply(reply);
- iob->reply = reply;
-
timeout = wait_event_interruptible_timeout(card->wait_q,
qeth_trylock_channel(channel),
timeout);
if (timeout <= 0) {
- qeth_put_reply(reply);
qeth_put_cmd(iob);
return (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
}
@@ -1740,7 +1706,7 @@ static int qeth_send_control_data(struct qeth_card *card,
iob->finalize(card, iob);
QETH_DBF_HEX(CTRL, 2, iob->data, min(iob->length, QETH_DBF_CTRL_LEN));
- qeth_enqueue_reply(card, reply);
+ qeth_enqueue_cmd(card, iob);
/* This pairs with iob->callback, and keeps the iob alive after IO: */
qeth_get_cmd(iob);
@@ -1754,34 +1720,33 @@ static int qeth_send_control_data(struct qeth_card *card,
QETH_DBF_MESSAGE(2, "qeth_send_control_data on device %x: ccw_device_start rc = %i\n",
CARD_DEVID(card), rc);
QETH_CARD_TEXT_(card, 2, " err%d", rc);
- qeth_dequeue_reply(card, reply);
+ qeth_dequeue_cmd(card, iob);
qeth_put_cmd(iob);
atomic_set(&channel->irq_pending, 0);
wake_up(&card->wait_q);
goto out;
}
- timeout = wait_for_completion_interruptible_timeout(&reply->received,
+ timeout = wait_for_completion_interruptible_timeout(&iob->done,
timeout);
if (timeout <= 0)
rc = (timeout == -ERESTARTSYS) ? -EINTR : -ETIME;
- qeth_dequeue_reply(card, reply);
+ qeth_dequeue_cmd(card, iob);
if (reply_cb) {
/* Wait until the callback for a late reply has completed: */
- spin_lock_irq(&reply->lock);
+ spin_lock_irq(&iob->lock);
if (rc)
/* Zap any callback that's still pending: */
- reply->rc = rc;
- spin_unlock_irq(&reply->lock);
+ iob->rc = rc;
+ spin_unlock_irq(&iob->lock);
}
if (!rc)
- rc = reply->rc;
+ rc = iob->rc;
out:
- qeth_put_reply(reply);
qeth_put_cmd(iob);
return rc;
}
@@ -1822,7 +1787,7 @@ static void qeth_read_conf_data_cb(struct qeth_card *card,
nd->nd3.model[2] <= 0xF4;
out:
- qeth_notify_reply(iob->reply, rc);
+ qeth_notify_cmd(iob, rc);
qeth_put_cmd(iob);
}
@@ -1914,7 +1879,7 @@ static void qeth_idx_activate_read_channel_cb(struct qeth_card *card,
QETH_IDX_REPLY_LEVEL(iob->data), QETH_MCL_LENGTH);
out:
- qeth_notify_reply(iob->reply, rc);
+ qeth_notify_cmd(iob, rc);
qeth_put_cmd(iob);
}
@@ -1942,7 +1907,7 @@ static void qeth_idx_activate_write_channel_cb(struct qeth_card *card,
}
out:
- qeth_notify_reply(iob->reply, rc);
+ qeth_notify_cmd(iob, rc);
qeth_put_cmd(iob);
}
@@ -2675,8 +2640,7 @@ static void qeth_ipa_finalize_cmd(struct qeth_card *card,
qeth_mpc_finalize_cmd(card, iob);
/* override with IPA-specific values: */
- __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa;
- iob->reply->seqno = card->seqno.ipa++;
+ __ipa_cmd(iob)->hdr.seqno = card->seqno.ipa++;
}
void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
diff --git a/drivers/s390/net/qeth_core_mpc.h b/drivers/s390/net/qeth_core_mpc.h
index 75b5834ed28d..6420b58cf42b 100644
--- a/drivers/s390/net/qeth_core_mpc.h
+++ b/drivers/s390/net/qeth_core_mpc.h
@@ -27,7 +27,6 @@ extern unsigned char IPA_PDU_HEADER[];
#define QETH_TIMEOUT (10 * HZ)
#define QETH_IPA_TIMEOUT (45 * HZ)
-#define QETH_IDX_COMMAND_SEQNO 0xffff0000
#define QETH_CLEAR_CHANNEL_PARM -10
#define QETH_HALT_CHANNEL_PARM -11
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index c524c8bff3c7..ad7ee3bfd63c 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -1003,7 +1003,7 @@ static void qeth_osn_assist_cb(struct qeth_card *card,
struct qeth_cmd_buffer *iob,
unsigned int data_length)
{
- qeth_notify_reply(iob->reply, 0);
+ qeth_notify_cmd(iob, 0);
qeth_put_cmd(iob);
}
--
2.17.1
^ permalink raw reply related
* [PATCH net-next 7/9] s390/qeth: streamline control code for promisc mode
From: Julian Wiedmann @ 2019-08-20 14:46 UTC (permalink / raw)
To: David Miller
Cc: netdev, linux-s390, Heiko Carstens, Stefan Raspl, Ursula Braun,
Julian Wiedmann
In-Reply-To: <20190820144643.64041-1-jwi@linux.ibm.com>
We have logic to determine the desired promisc mode in _each_ code path.
Change things around so that there is a clean split between
(a) high-level code that selects the new mode, and (b) implementations
of the various mechanisms to program this mode.
This also keeps qeth_promisc_to_bridge() from polluting the debug logs
on each RX modeset.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Alexandra Winter <wintera@linux.ibm.com>
---
drivers/s390/net/qeth_core.h | 4 ++--
drivers/s390/net/qeth_core_main.c | 15 +++----------
drivers/s390/net/qeth_l2_main.c | 36 +++++++++++++++----------------
drivers/s390/net/qeth_l3_main.c | 24 ++++++---------------
4 files changed, 30 insertions(+), 49 deletions(-)
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index f07bb7130280..72755a025b4d 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -653,6 +653,7 @@ struct qeth_card_info {
__u16 func_level;
char mcl_level[QETH_MCL_LENGTH + 1];
u8 open_when_online:1;
+ u8 promisc_mode:1;
u8 use_v1_blkt:1;
u8 is_vm_nic:1;
int mac_bits;
@@ -662,7 +663,6 @@ struct qeth_card_info {
int unique_id;
bool layer_enforced;
struct qeth_card_blkt blkt;
- enum qeth_ipa_promisc_modes promisc_mode;
__u32 diagass_support;
__u32 hwtrap;
};
@@ -1004,7 +1004,7 @@ void qeth_clear_ipacmd_list(struct qeth_card *);
int qeth_qdio_clear_card(struct qeth_card *, int);
void qeth_clear_working_pool_list(struct qeth_card *);
void qeth_drain_output_queues(struct qeth_card *card);
-void qeth_setadp_promisc_mode(struct qeth_card *);
+void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable);
int qeth_setadpparms_change_macaddr(struct qeth_card *);
void qeth_tx_timeout(struct net_device *);
void qeth_prepare_ipa_cmd(struct qeth_card *card, struct qeth_cmd_buffer *iob,
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 95996ce99145..44fbaa4f7264 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -4015,23 +4015,14 @@ static int qeth_setadp_promisc_mode_cb(struct qeth_card *card,
return (cmd->hdr.return_code) ? -EIO : 0;
}
-void qeth_setadp_promisc_mode(struct qeth_card *card)
+void qeth_setadp_promisc_mode(struct qeth_card *card, bool enable)
{
- enum qeth_ipa_promisc_modes mode;
- struct net_device *dev = card->dev;
+ enum qeth_ipa_promisc_modes mode = enable ? SET_PROMISC_MODE_ON :
+ SET_PROMISC_MODE_OFF;
struct qeth_cmd_buffer *iob;
struct qeth_ipa_cmd *cmd;
QETH_CARD_TEXT(card, 4, "setprom");
-
- if (((dev->flags & IFF_PROMISC) &&
- (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
- (!(dev->flags & IFF_PROMISC) &&
- (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
- return;
- mode = SET_PROMISC_MODE_OFF;
- if (dev->flags & IFF_PROMISC)
- mode = SET_PROMISC_MODE_ON;
QETH_CARD_TEXT_(card, 4, "mode:%x", mode);
iob = qeth_get_adapter_cmd(card, IPA_SETADP_SET_PROMISC_MODE,
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index 1f534f489a79..662bd51f922f 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -439,23 +439,14 @@ static int qeth_l2_set_mac_address(struct net_device *dev, void *p)
return 0;
}
-static void qeth_promisc_to_bridge(struct qeth_card *card)
+static void qeth_l2_promisc_to_bridge(struct qeth_card *card, bool enable)
{
- struct net_device *dev = card->dev;
- enum qeth_ipa_promisc_modes promisc_mode;
int role;
int rc;
QETH_CARD_TEXT(card, 3, "pmisc2br");
- if (!card->options.sbp.reflect_promisc)
- return;
- promisc_mode = (dev->flags & IFF_PROMISC) ? SET_PROMISC_MODE_ON
- : SET_PROMISC_MODE_OFF;
- if (promisc_mode == card->info.promisc_mode)
- return;
-
- if (promisc_mode == SET_PROMISC_MODE_ON) {
+ if (enable) {
if (card->options.sbp.reflect_promisc_primary)
role = QETH_SBP_ROLE_PRIMARY;
else
@@ -464,14 +455,26 @@ static void qeth_promisc_to_bridge(struct qeth_card *card)
role = QETH_SBP_ROLE_NONE;
rc = qeth_bridgeport_setrole(card, role);
- QETH_CARD_TEXT_(card, 2, "bpm%c%04x",
- (promisc_mode == SET_PROMISC_MODE_ON) ? '+' : '-', rc);
+ QETH_CARD_TEXT_(card, 2, "bpm%c%04x", enable ? '+' : '-', rc);
if (!rc) {
card->options.sbp.role = role;
- card->info.promisc_mode = promisc_mode;
+ card->info.promisc_mode = enable;
}
+}
+
+static void qeth_l2_set_promisc_mode(struct qeth_card *card)
+{
+ bool enable = card->dev->flags & IFF_PROMISC;
+
+ if (card->info.promisc_mode == enable)
+ return;
+ if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
+ qeth_setadp_promisc_mode(card, enable);
+ else if (card->options.sbp.reflect_promisc)
+ qeth_l2_promisc_to_bridge(card, enable);
}
+
/* New MAC address is added to the hash table and marked to be written on card
* only if there is not in the hash table storage already
*
@@ -539,10 +542,7 @@ static void qeth_l2_rx_mode_work(struct work_struct *work)
}
}
- if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
- qeth_setadp_promisc_mode(card);
- else
- qeth_promisc_to_bridge(card);
+ qeth_l2_set_promisc_mode(card);
}
static int qeth_l2_xmit_osn(struct qeth_card *card, struct sk_buff *skb,
diff --git a/drivers/s390/net/qeth_l3_main.c b/drivers/s390/net/qeth_l3_main.c
index 2dd99f103671..54799fe6a700 100644
--- a/drivers/s390/net/qeth_l3_main.c
+++ b/drivers/s390/net/qeth_l3_main.c
@@ -1435,27 +1435,19 @@ static void qeth_l3_stop_card(struct qeth_card *card)
flush_workqueue(card->event_wq);
}
-/*
- * test for and Switch promiscuous mode (on or off)
- * either for guestlan or HiperSocket Sniffer
- */
-static void
-qeth_l3_handle_promisc_mode(struct qeth_card *card)
+static void qeth_l3_set_promisc_mode(struct qeth_card *card)
{
- struct net_device *dev = card->dev;
+ bool enable = card->dev->flags & IFF_PROMISC;
- if (((dev->flags & IFF_PROMISC) &&
- (card->info.promisc_mode == SET_PROMISC_MODE_ON)) ||
- (!(dev->flags & IFF_PROMISC) &&
- (card->info.promisc_mode == SET_PROMISC_MODE_OFF)))
+ if (card->info.promisc_mode == enable)
return;
if (IS_VM_NIC(card)) { /* Guestlan trace */
if (qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
- qeth_setadp_promisc_mode(card);
+ qeth_setadp_promisc_mode(card, enable);
} else if (card->options.sniffer && /* HiperSockets trace */
qeth_adp_supported(card, IPA_SETADP_SET_DIAG_ASSIST)) {
- if (dev->flags & IFF_PROMISC) {
+ if (enable) {
QETH_CARD_TEXT(card, 3, "+promisc");
qeth_diags_trace(card, QETH_DIAGS_CMD_TRACE_ENABLE);
} else {
@@ -1502,11 +1494,9 @@ static void qeth_l3_rx_mode_work(struct work_struct *work)
addr->disp_flag = QETH_DISP_ADDR_DELETE;
}
}
-
- if (!qeth_adp_supported(card, IPA_SETADP_SET_PROMISC_MODE))
- return;
}
- qeth_l3_handle_promisc_mode(card);
+
+ qeth_l3_set_promisc_mode(card);
}
static int qeth_l3_arp_makerc(u16 rc)
--
2.17.1
^ permalink raw reply related
* [PATCH net-next 9/9] s390/lcs: don't use intparm for channel IO
From: Julian Wiedmann @ 2019-08-20 14:46 UTC (permalink / raw)
To: David Miller
Cc: netdev, linux-s390, Heiko Carstens, Stefan Raspl, Ursula Braun,
Julian Wiedmann
In-Reply-To: <20190820144643.64041-1-jwi@linux.ibm.com>
lcs passes an intparm when calling ccw_device_*(), even though lcs_irq()
later makes no use of this.
To reduce the confusion, consistently pass 0 as intparm instead.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.ibm.com>
---
drivers/s390/net/lcs.c | 6 +++---
1 file changed, 3 insertions(+), 3 deletions(-)
diff --git a/drivers/s390/net/lcs.c b/drivers/s390/net/lcs.c
index 2d9fe7e4ee40..8f08b0a2917c 100644
--- a/drivers/s390/net/lcs.c
+++ b/drivers/s390/net/lcs.c
@@ -504,7 +504,7 @@ lcs_clear_channel(struct lcs_channel *channel)
LCS_DBF_TEXT(4,trace,"clearch");
LCS_DBF_TEXT_(4, trace, "%s", dev_name(&channel->ccwdev->dev));
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
- rc = ccw_device_clear(channel->ccwdev, (addr_t) channel);
+ rc = ccw_device_clear(channel->ccwdev, 0);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc) {
LCS_DBF_TEXT_(4, trace, "ecsc%s",
@@ -532,7 +532,7 @@ lcs_stop_channel(struct lcs_channel *channel)
LCS_DBF_TEXT_(4, trace, "%s", dev_name(&channel->ccwdev->dev));
channel->state = LCS_CH_STATE_INIT;
spin_lock_irqsave(get_ccwdev_lock(channel->ccwdev), flags);
- rc = ccw_device_halt(channel->ccwdev, (addr_t) channel);
+ rc = ccw_device_halt(channel->ccwdev, 0);
spin_unlock_irqrestore(get_ccwdev_lock(channel->ccwdev), flags);
if (rc) {
LCS_DBF_TEXT_(4, trace, "ehsc%s",
@@ -1427,7 +1427,7 @@ lcs_irq(struct ccw_device *cdev, unsigned long intparm, struct irb *irb)
channel->state = LCS_CH_STATE_SUSPENDED;
if (irb->scsw.cmd.fctl & SCSW_FCTL_HALT_FUNC) {
if (irb->scsw.cmd.cc != 0) {
- ccw_device_halt(channel->ccwdev, (addr_t) channel);
+ ccw_device_halt(channel->ccwdev, 0);
return;
}
/* The channel has been stopped by halt_IO. */
--
2.17.1
^ permalink raw reply related
* [PATCH net-next 8/9] s390/ctcm: don't use intparm for channel IO
From: Julian Wiedmann @ 2019-08-20 14:46 UTC (permalink / raw)
To: David Miller
Cc: netdev, linux-s390, Heiko Carstens, Stefan Raspl, Ursula Braun,
Julian Wiedmann
In-Reply-To: <20190820144643.64041-1-jwi@linux.ibm.com>
ctcm passes an intparm when calling ccw_device_*(), even though
ctcm_irq_handler() later makes no use of this.
To reduce the confusion, consistently pass 0 as intparm instead.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
Reviewed-by: Sebastian Ott <sebott@linux.ibm.com>
---
drivers/s390/net/ctcm_fsms.c | 42 ++++++++++++++----------------------
drivers/s390/net/ctcm_main.c | 6 ++----
drivers/s390/net/ctcm_mpc.c | 6 ++----
3 files changed, 20 insertions(+), 34 deletions(-)
diff --git a/drivers/s390/net/ctcm_fsms.c b/drivers/s390/net/ctcm_fsms.c
index 4a8a5373cb35..3ce99e4db44d 100644
--- a/drivers/s390/net/ctcm_fsms.c
+++ b/drivers/s390/net/ctcm_fsms.c
@@ -307,8 +307,7 @@ static void chx_txdone(fsm_instance *fi, int event, void *arg)
ch->ccw[1].count = ch->trans_skb->len;
fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
ch->prof.send_stamp = jiffies;
- rc = ccw_device_start(ch->cdev, &ch->ccw[0],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
ch->prof.doios_multi++;
if (rc != 0) {
priv->stats.tx_dropped += i;
@@ -417,8 +416,7 @@ static void chx_rx(fsm_instance *fi, int event, void *arg)
if (ctcm_checkalloc_buffer(ch))
return;
ch->ccw[1].count = ch->max_bufsize;
- rc = ccw_device_start(ch->cdev, &ch->ccw[0],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
if (rc != 0)
ctcm_ccw_check_rc(ch, rc, "normal RX");
}
@@ -478,8 +476,7 @@ static void chx_firstio(fsm_instance *fi, int event, void *arg)
fsm_newstate(fi, (CHANNEL_DIRECTION(ch->flags) == CTCM_READ)
? CTC_STATE_RXINIT : CTC_STATE_TXINIT);
- rc = ccw_device_start(ch->cdev, &ch->ccw[0],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
if (rc != 0) {
fsm_deltimer(&ch->timer);
fsm_newstate(fi, CTC_STATE_SETUPWAIT);
@@ -527,8 +524,7 @@ static void chx_rxidle(fsm_instance *fi, int event, void *arg)
return;
ch->ccw[1].count = ch->max_bufsize;
fsm_newstate(fi, CTC_STATE_RXIDLE);
- rc = ccw_device_start(ch->cdev, &ch->ccw[0],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
if (rc != 0) {
fsm_newstate(fi, CTC_STATE_RXINIT);
ctcm_ccw_check_rc(ch, rc, "initial RX");
@@ -571,8 +567,7 @@ static void ctcm_chx_setmode(fsm_instance *fi, int event, void *arg)
/* Such conditional locking is undeterministic in
* static view. => ignore sparse warnings here. */
- rc = ccw_device_start(ch->cdev, &ch->ccw[6],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[6], 0, 0xff, 0);
if (event == CTC_EVENT_TIMER) /* see above comments */
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
if (rc != 0) {
@@ -637,7 +632,7 @@ static void ctcm_chx_start(fsm_instance *fi, int event, void *arg)
fsm_newstate(fi, CTC_STATE_STARTWAIT);
fsm_addtimer(&ch->timer, 1000, CTC_EVENT_TIMER, ch);
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
- rc = ccw_device_halt(ch->cdev, (unsigned long)ch);
+ rc = ccw_device_halt(ch->cdev, 0);
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
if (rc != 0) {
if (rc != -EBUSY)
@@ -672,7 +667,7 @@ static void ctcm_chx_haltio(fsm_instance *fi, int event, void *arg)
* static view. => ignore sparse warnings here. */
oldstate = fsm_getstate(fi);
fsm_newstate(fi, CTC_STATE_TERM);
- rc = ccw_device_halt(ch->cdev, (unsigned long)ch);
+ rc = ccw_device_halt(ch->cdev, 0);
if (event == CTC_EVENT_STOP)
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
@@ -799,7 +794,7 @@ static void ctcm_chx_setuperr(fsm_instance *fi, int event, void *arg)
fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
if (!IS_MPC(ch) &&
(CHANNEL_DIRECTION(ch->flags) == CTCM_READ)) {
- int rc = ccw_device_halt(ch->cdev, (unsigned long)ch);
+ int rc = ccw_device_halt(ch->cdev, 0);
if (rc != 0)
ctcm_ccw_check_rc(ch, rc,
"HaltIO in chx_setuperr");
@@ -851,7 +846,7 @@ static void ctcm_chx_restart(fsm_instance *fi, int event, void *arg)
/* Such conditional locking is a known problem for
* sparse because its undeterministic in static view.
* Warnings should be ignored here. */
- rc = ccw_device_halt(ch->cdev, (unsigned long)ch);
+ rc = ccw_device_halt(ch->cdev, 0);
if (event == CTC_EVENT_TIMER)
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
if (rc != 0) {
@@ -947,8 +942,8 @@ static void ctcm_chx_rxdisc(fsm_instance *fi, int event, void *arg)
ch2 = priv->channel[CTCM_WRITE];
fsm_newstate(ch2->fsm, CTC_STATE_DTERM);
- ccw_device_halt(ch->cdev, (unsigned long)ch);
- ccw_device_halt(ch2->cdev, (unsigned long)ch2);
+ ccw_device_halt(ch->cdev, 0);
+ ccw_device_halt(ch2->cdev, 0);
}
/**
@@ -1041,8 +1036,7 @@ static void ctcm_chx_txretry(fsm_instance *fi, int event, void *arg)
ctcmpc_dumpit((char *)&ch->ccw[3],
sizeof(struct ccw1) * 3);
- rc = ccw_device_start(ch->cdev, &ch->ccw[3],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[3], 0, 0xff, 0);
if (event == CTC_EVENT_TIMER)
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev),
saveflags);
@@ -1361,8 +1355,7 @@ static void ctcmpc_chx_txdone(fsm_instance *fi, int event, void *arg)
ch->prof.send_stamp = jiffies;
if (do_debug_ccw)
ctcmpc_dumpit((char *)&ch->ccw[0], sizeof(struct ccw1) * 3);
- rc = ccw_device_start(ch->cdev, &ch->ccw[0],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
ch->prof.doios_multi++;
if (rc != 0) {
priv->stats.tx_dropped += i;
@@ -1462,8 +1455,7 @@ static void ctcmpc_chx_rx(fsm_instance *fi, int event, void *arg)
if (dolock)
spin_lock_irqsave(
get_ccwdev_lock(ch->cdev), saveflags);
- rc = ccw_device_start(ch->cdev, &ch->ccw[0],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
if (dolock) /* see remark about conditional locking */
spin_unlock_irqrestore(
get_ccwdev_lock(ch->cdev), saveflags);
@@ -1569,8 +1561,7 @@ void ctcmpc_chx_rxidle(fsm_instance *fi, int event, void *arg)
if (event == CTC_EVENT_START)
/* see remark about conditional locking */
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
- rc = ccw_device_start(ch->cdev, &ch->ccw[0],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[0], 0, 0xff, 0);
if (event == CTC_EVENT_START)
spin_unlock_irqrestore(
get_ccwdev_lock(ch->cdev), saveflags);
@@ -1825,8 +1816,7 @@ static void ctcmpc_chx_send_sweep(fsm_instance *fsm, int event, void *arg)
spin_lock_irqsave(get_ccwdev_lock(wch->cdev), saveflags);
wch->prof.send_stamp = jiffies;
- rc = ccw_device_start(wch->cdev, &wch->ccw[3],
- (unsigned long) wch, 0xff, 0);
+ rc = ccw_device_start(wch->cdev, &wch->ccw[3], 0, 0xff, 0);
spin_unlock_irqrestore(get_ccwdev_lock(wch->cdev), saveflags);
if ((grp->sweep_req_pend_num == 0) &&
diff --git a/drivers/s390/net/ctcm_main.c b/drivers/s390/net/ctcm_main.c
index f63c5c871d3d..2117870ed855 100644
--- a/drivers/s390/net/ctcm_main.c
+++ b/drivers/s390/net/ctcm_main.c
@@ -569,8 +569,7 @@ static int ctcm_transmit_skb(struct channel *ch, struct sk_buff *skb)
fsm_addtimer(&ch->timer, CTCM_TIME_5_SEC, CTC_EVENT_TIMER, ch);
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
ch->prof.send_stamp = jiffies;
- rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx], 0, 0xff, 0);
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
if (ccw_idx == 3)
ch->prof.doios_single++;
@@ -833,8 +832,7 @@ static int ctcmpc_transmit_skb(struct channel *ch, struct sk_buff *skb)
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
ch->prof.send_stamp = jiffies;
- rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[ccw_idx], 0, 0xff, 0);
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
if (ccw_idx == 3)
ch->prof.doios_single++;
diff --git a/drivers/s390/net/ctcm_mpc.c b/drivers/s390/net/ctcm_mpc.c
index 1534420a0243..ab316baa8284 100644
--- a/drivers/s390/net/ctcm_mpc.c
+++ b/drivers/s390/net/ctcm_mpc.c
@@ -1523,8 +1523,7 @@ void mpc_action_send_discontact(unsigned long thischan)
unsigned long saveflags = 0;
spin_lock_irqsave(get_ccwdev_lock(ch->cdev), saveflags);
- rc = ccw_device_start(ch->cdev, &ch->ccw[15],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[15], 0, 0xff, 0);
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
if (rc != 0) {
@@ -1797,8 +1796,7 @@ static void mpc_action_side_xid(fsm_instance *fsm, void *arg, int side)
}
fsm_addtimer(&ch->timer, 5000 , CTC_EVENT_TIMER, ch);
- rc = ccw_device_start(ch->cdev, &ch->ccw[8],
- (unsigned long)ch, 0xff, 0);
+ rc = ccw_device_start(ch->cdev, &ch->ccw[8], 0, 0xff, 0);
if (gotlock) /* see remark above about conditional locking */
spin_unlock_irqrestore(get_ccwdev_lock(ch->cdev), saveflags);
--
2.17.1
^ permalink raw reply related
* [PATCH net-next 6/9] s390/qeth: get vnicc sub-cmd type from reply data
From: Julian Wiedmann @ 2019-08-20 14:46 UTC (permalink / raw)
To: David Miller
Cc: netdev, linux-s390, Heiko Carstens, Stefan Raspl, Ursula Braun,
Julian Wiedmann
In-Reply-To: <20190820144643.64041-1-jwi@linux.ibm.com>
When processing the reply for a vnicc cmd, there's no need to remember
which specific sub-cmd type we initially sent. The reply itself contains
all the needed information.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
---
drivers/s390/net/qeth_l2_main.c | 21 +++++----------------
1 file changed, 5 insertions(+), 16 deletions(-)
diff --git a/drivers/s390/net/qeth_l2_main.c b/drivers/s390/net/qeth_l2_main.c
index ad7ee3bfd63c..1f534f489a79 100644
--- a/drivers/s390/net/qeth_l2_main.c
+++ b/drivers/s390/net/qeth_l2_main.c
@@ -1704,7 +1704,6 @@ static int qeth_l2_vnicc_makerc(struct qeth_card *card, u16 ipa_rc)
/* generic VNICC request call back control */
struct _qeth_l2_vnicc_request_cbctl {
- u32 sub_cmd;
struct {
union{
u32 *sup_cmds;
@@ -1722,6 +1721,7 @@ static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
(struct _qeth_l2_vnicc_request_cbctl *) reply->param;
struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
struct qeth_ipacmd_vnicc *rep = &cmd->data.vnicc;
+ u32 sub_cmd = cmd->data.vnicc.hdr.sub_command;
QETH_CARD_TEXT(card, 2, "vniccrcb");
if (cmd->hdr.return_code)
@@ -1730,10 +1730,9 @@ static int qeth_l2_vnicc_request_cb(struct qeth_card *card,
card->options.vnicc.sup_chars = rep->vnicc_cmds.supported;
card->options.vnicc.cur_chars = rep->vnicc_cmds.enabled;
- if (cbctl->sub_cmd == IPA_VNICC_QUERY_CMDS)
+ if (sub_cmd == IPA_VNICC_QUERY_CMDS)
*cbctl->result.sup_cmds = rep->data.query_cmds.sup_cmds;
-
- if (cbctl->sub_cmd == IPA_VNICC_GET_TIMEOUT)
+ else if (sub_cmd == IPA_VNICC_GET_TIMEOUT)
*cbctl->result.timeout = rep->data.getset_timeout.timeout;
return 0;
@@ -1761,7 +1760,6 @@ static struct qeth_cmd_buffer *qeth_l2_vnicc_build_cmd(struct qeth_card *card,
/* VNICC query VNIC characteristics request */
static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
{
- struct _qeth_l2_vnicc_request_cbctl cbctl;
struct qeth_cmd_buffer *iob;
QETH_CARD_TEXT(card, 2, "vniccqch");
@@ -1769,10 +1767,7 @@ static int qeth_l2_vnicc_query_chars(struct qeth_card *card)
if (!iob)
return -ENOMEM;
- /* prepare callback control */
- cbctl.sub_cmd = IPA_VNICC_QUERY_CHARS;
-
- return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl);
+ return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
}
/* VNICC query sub commands request */
@@ -1791,7 +1786,6 @@ static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
__ipa_cmd(iob)->data.vnicc.data.query_cmds.vnic_char = vnic_char;
/* prepare callback control */
- cbctl.sub_cmd = IPA_VNICC_QUERY_CMDS;
cbctl.result.sup_cmds = sup_cmds;
return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl);
@@ -1801,7 +1795,6 @@ static int qeth_l2_vnicc_query_cmds(struct qeth_card *card, u32 vnic_char,
static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
u32 cmd)
{
- struct _qeth_l2_vnicc_request_cbctl cbctl;
struct qeth_cmd_buffer *iob;
QETH_CARD_TEXT(card, 2, "vniccedc");
@@ -1811,10 +1804,7 @@ static int qeth_l2_vnicc_set_char(struct qeth_card *card, u32 vnic_char,
__ipa_cmd(iob)->data.vnicc.data.set_char.vnic_char = vnic_char;
- /* prepare callback control */
- cbctl.sub_cmd = cmd;
-
- return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, &cbctl);
+ return qeth_send_ipa_cmd(card, iob, qeth_l2_vnicc_request_cb, NULL);
}
/* VNICC get/set timeout for characteristic request */
@@ -1838,7 +1828,6 @@ static int qeth_l2_vnicc_getset_timeout(struct qeth_card *card, u32 vnicc,
getset_timeout->timeout = *timeout;
/* prepare callback control */
- cbctl.sub_cmd = cmd;
if (cmd == IPA_VNICC_GET_TIMEOUT)
cbctl.result.timeout = timeout;
--
2.17.1
^ permalink raw reply related
* [PATCH net-next 3/9] s390/qeth: use correct length field in SNMP cmd callback
From: Julian Wiedmann @ 2019-08-20 14:46 UTC (permalink / raw)
To: David Miller
Cc: netdev, linux-s390, Heiko Carstens, Stefan Raspl, Ursula Braun,
Julian Wiedmann
In-Reply-To: <20190820144643.64041-1-jwi@linux.ibm.com>
qeth_snmp_command_cb() is the only cmd callback that pulls the reply's
data length from a low-level transport header field. This requires
additional complexity (ie. reply->offset) to make the header accessible
to what is supposed to be a pure IPA cmd callback.
Adapter cmds have a length field in their sub-cmd header, get the data
length from there instead.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
---
drivers/s390/net/qeth_core.h | 1 -
drivers/s390/net/qeth_core_main.c | 42 ++++++++++++-------------------
2 files changed, 16 insertions(+), 27 deletions(-)
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 4e21aa8edb13..f6e58a51c366 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -634,7 +634,6 @@ struct qeth_reply {
int (*callback)(struct qeth_card *, struct qeth_reply *,
unsigned long);
u32 seqno;
- unsigned long offset;
int rc;
void *param;
refcount_t refcnt;
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index f7a8b8301eb4..49e85d2e79c2 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -807,17 +807,12 @@ static void qeth_issue_next_read_cb(struct qeth_card *card,
}
spin_lock_irqsave(&reply->lock, flags);
- if (reply->rc) {
+ if (reply->rc)
/* Bail out when the requestor has already left: */
rc = reply->rc;
- } else {
- if (cmd) {
- reply->offset = (u16)((char *)cmd - (char *)iob->data);
- rc = reply->callback(card, reply, (unsigned long)cmd);
- } else {
- rc = reply->callback(card, reply, (unsigned long)iob);
- }
- }
+ else
+ rc = reply->callback(card, reply, cmd ? (unsigned long)cmd :
+ (unsigned long)iob);
spin_unlock_irqrestore(&reply->lock, flags);
no_callback:
@@ -4335,20 +4330,16 @@ static int qeth_mdio_read(struct net_device *dev, int phy_id, int regnum)
}
static int qeth_snmp_command_cb(struct qeth_card *card,
- struct qeth_reply *reply, unsigned long sdata)
+ struct qeth_reply *reply, unsigned long data)
{
- struct qeth_ipa_cmd *cmd;
- struct qeth_arp_query_info *qinfo;
- unsigned char *data;
+ struct qeth_ipa_cmd *cmd = (struct qeth_ipa_cmd *) data;
+ struct qeth_arp_query_info *qinfo = reply->param;
+ struct qeth_ipacmd_setadpparms *adp_cmd;
+ unsigned int data_len;
void *snmp_data;
- __u16 data_len;
QETH_CARD_TEXT(card, 3, "snpcmdcb");
- cmd = (struct qeth_ipa_cmd *) sdata;
- data = (unsigned char *)((char *)cmd - reply->offset);
- qinfo = (struct qeth_arp_query_info *) reply->param;
-
if (cmd->hdr.return_code) {
QETH_CARD_TEXT_(card, 4, "scer1%x", cmd->hdr.return_code);
return -EIO;
@@ -4359,15 +4350,14 @@ static int qeth_snmp_command_cb(struct qeth_card *card,
QETH_CARD_TEXT_(card, 4, "scer2%x", cmd->hdr.return_code);
return -EIO;
}
- data_len = *((__u16 *)QETH_IPA_PDU_LEN_PDU1(data));
- if (cmd->data.setadapterparms.hdr.seq_no == 1) {
- snmp_data = &cmd->data.setadapterparms.data.snmp;
- data_len -= offsetof(struct qeth_ipa_cmd,
- data.setadapterparms.data.snmp);
+
+ adp_cmd = &cmd->data.setadapterparms;
+ data_len = adp_cmd->hdr.cmdlength - sizeof(adp_cmd->hdr);
+ if (adp_cmd->hdr.seq_no == 1) {
+ snmp_data = &adp_cmd->data.snmp;
} else {
- snmp_data = &cmd->data.setadapterparms.data.snmp.request;
- data_len -= offsetof(struct qeth_ipa_cmd,
- data.setadapterparms.data.snmp.request);
+ snmp_data = &adp_cmd->data.snmp.request;
+ data_len -= offsetof(struct qeth_snmp_cmd, request);
}
/* check if there is enough room in userspace */
--
2.17.1
^ permalink raw reply related
* [PATCH net-next 4/9] s390/qeth: keep cmd alive after IO completion
From: Julian Wiedmann @ 2019-08-20 14:46 UTC (permalink / raw)
To: David Miller
Cc: netdev, linux-s390, Heiko Carstens, Stefan Raspl, Ursula Braun,
Julian Wiedmann
In-Reply-To: <20190820144643.64041-1-jwi@linux.ibm.com>
Current code releases the cmd struct after its initial IO has completed.
Any reply processing is done independently, using a separate qeth_reply
struct.
In preparation for merging the cmd and reply structs together, take an
additional reference on the cmd object so that it stays around all the
way until qeth_send_control_data() returns.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
---
drivers/s390/net/qeth_core_main.c | 9 +++++++--
1 file changed, 7 insertions(+), 2 deletions(-)
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 49e85d2e79c2..3fc14f222dc3 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -1742,6 +1742,9 @@ static int qeth_send_control_data(struct qeth_card *card,
qeth_enqueue_reply(card, reply);
+ /* This pairs with iob->callback, and keeps the iob alive after IO: */
+ qeth_get_cmd(iob);
+
QETH_CARD_TEXT(card, 6, "noirqpnd");
spin_lock_irq(get_ccwdev_lock(channel->ccwdev));
rc = ccw_device_start_timeout(channel->ccwdev, __ccw_from_cmd(iob),
@@ -1752,11 +1755,10 @@ static int qeth_send_control_data(struct qeth_card *card,
CARD_DEVID(card), rc);
QETH_CARD_TEXT_(card, 2, " err%d", rc);
qeth_dequeue_reply(card, reply);
- qeth_put_reply(reply);
qeth_put_cmd(iob);
atomic_set(&channel->irq_pending, 0);
wake_up(&card->wait_q);
- return rc;
+ goto out;
}
timeout = wait_for_completion_interruptible_timeout(&reply->received,
@@ -1777,7 +1779,10 @@ static int qeth_send_control_data(struct qeth_card *card,
if (!rc)
rc = reply->rc;
+
+out:
qeth_put_reply(reply);
+ qeth_put_cmd(iob);
return rc;
}
--
2.17.1
^ permalink raw reply related
* [PATCH net-next 0/9] s390/net: updates 2019-08-20
From: Julian Wiedmann @ 2019-08-20 14:46 UTC (permalink / raw)
To: David Miller
Cc: netdev, linux-s390, Heiko Carstens, Stefan Raspl, Ursula Braun,
Julian Wiedmann
Hi Dave,
please apply the following patches to net-next. This series brings a mix
of cleanups and small improvements for various parts of qeth's control
path. Also, a minor cleanup for ctcm and lcs.
Thanks,
Julian
Julian Wiedmann (9):
s390/qeth: use node_descriptor struct
s390/qeth: propagate length of processed cmd IO data to callback
s390/qeth: use correct length field in SNMP cmd callback
s390/qeth: keep cmd alive after IO completion
s390/qeth: merge qeth_reply struct into qeth_cmd_buffer
s390/qeth: get vnicc sub-cmd type from reply data
s390/qeth: streamline control code for promisc mode
s390/ctcm: don't use intparm for channel IO
s390/lcs: don't use intparm for channel IO
drivers/s390/net/ctcm_fsms.c | 42 ++---
drivers/s390/net/ctcm_main.c | 6 +-
drivers/s390/net/ctcm_mpc.c | 6 +-
drivers/s390/net/lcs.c | 6 +-
drivers/s390/net/qeth_core.h | 36 ++---
drivers/s390/net/qeth_core_main.c | 261 ++++++++++++++----------------
drivers/s390/net/qeth_core_mpc.h | 1 -
drivers/s390/net/qeth_l2_main.c | 62 +++----
drivers/s390/net/qeth_l3_main.c | 24 +--
9 files changed, 197 insertions(+), 247 deletions(-)
--
2.17.1
^ permalink raw reply
* [PATCH net-next 1/9] s390/qeth: use node_descriptor struct
From: Julian Wiedmann @ 2019-08-20 14:46 UTC (permalink / raw)
To: David Miller
Cc: netdev, linux-s390, Heiko Carstens, Stefan Raspl, Ursula Braun,
Julian Wiedmann
In-Reply-To: <20190820144643.64041-1-jwi@linux.ibm.com>
Rather than fumbling with hard-coded offsets, use the proper struct to
access the retrieved RCD information.
Signed-off-by: Julian Wiedmann <jwi@linux.ibm.com>
---
drivers/s390/net/qeth_core.h | 2 +-
drivers/s390/net/qeth_core_main.c | 31 +++++++++++++++++++++++--------
2 files changed, 24 insertions(+), 9 deletions(-)
diff --git a/drivers/s390/net/qeth_core.h b/drivers/s390/net/qeth_core.h
index 28db887d38ed..47e01cdd1775 100644
--- a/drivers/s390/net/qeth_core.h
+++ b/drivers/s390/net/qeth_core.h
@@ -651,7 +651,7 @@ struct qeth_card_blkt {
struct qeth_card_info {
unsigned short unit_addr2;
unsigned short cula;
- unsigned short chpid;
+ u8 chpid;
__u16 func_level;
char mcl_level[QETH_MCL_LENGTH + 1];
u8 open_when_online:1;
diff --git a/drivers/s390/net/qeth_core_main.c b/drivers/s390/net/qeth_core_main.c
index 0803070246aa..50f2773a1f8c 100644
--- a/drivers/s390/net/qeth_core_main.c
+++ b/drivers/s390/net/qeth_core_main.c
@@ -1775,19 +1775,32 @@ static int qeth_send_control_data(struct qeth_card *card,
return rc;
}
+struct qeth_node_desc {
+ struct node_descriptor nd1;
+ struct node_descriptor nd2;
+ struct node_descriptor nd3;
+};
+
static void qeth_read_conf_data_cb(struct qeth_card *card,
struct qeth_cmd_buffer *iob)
{
- unsigned char *prcd = iob->data;
+ struct qeth_node_desc *nd = (struct qeth_node_desc *) iob->data;
+ u8 *tag;
QETH_CARD_TEXT(card, 2, "cfgunit");
- card->info.chpid = prcd[30];
- card->info.unit_addr2 = prcd[31];
- card->info.cula = prcd[63];
- card->info.is_vm_nic = ((prcd[0x10] == _ascebc['V']) &&
- (prcd[0x11] == _ascebc['M']));
- card->info.use_v1_blkt = prcd[74] == 0xF0 && prcd[75] == 0xF0 &&
- prcd[76] >= 0xF1 && prcd[76] <= 0xF4;
+ card->info.is_vm_nic = nd->nd1.plant[0] == _ascebc['V'] &&
+ nd->nd1.plant[1] == _ascebc['M'];
+ tag = (u8 *)&nd->nd1.tag;
+ card->info.chpid = tag[0];
+ card->info.unit_addr2 = tag[1];
+
+ tag = (u8 *)&nd->nd2.tag;
+ card->info.cula = tag[1];
+
+ card->info.use_v1_blkt = nd->nd3.model[0] == 0xF0 &&
+ nd->nd3.model[1] == 0xF0 &&
+ nd->nd3.model[2] >= 0xF1 &&
+ nd->nd3.model[2] <= 0xF4;
qeth_notify_reply(iob->reply, 0);
qeth_put_cmd(iob);
@@ -1803,6 +1816,8 @@ static int qeth_read_conf_data(struct qeth_card *card)
ciw = ccw_device_get_ciw(channel->ccwdev, CIW_TYPE_RCD);
if (!ciw || ciw->cmd == 0)
return -EOPNOTSUPP;
+ if (ciw->count < sizeof(struct qeth_node_desc))
+ return -EINVAL;
iob = qeth_alloc_cmd(channel, ciw->count, 1, QETH_RCD_TIMEOUT);
if (!iob)
--
2.17.1
^ permalink raw reply related
* Re: [PATCH net-next 1/2] net: flow_offload: mangle 128-bit packet field with one action
From: Pablo Neira Ayuso @ 2019-08-20 14:44 UTC (permalink / raw)
To: Edward Cree; +Cc: netfilter-devel, davem, netdev, jakub.kicinski, jiri, vladbu
In-Reply-To: <f18d8369-f87d-5b9a-6c9d-daf48a3b95f1@solarflare.com>
On Tue, Aug 20, 2019 at 03:15:16PM +0100, Edward Cree wrote:
> On 20/08/2019 11:52, Pablo Neira Ayuso wrote:
> > The existing infrastructure needs the front-end to generate up to four
> > actions (one for each 32-bit word) to mangle an IPv6 address. This patch
> > allows you to mangle fields than are longer than 4-bytes with one single
> > action. Drivers have been adapted to this new representation following a
> > simple approach, that is, iterate over the array of words and configure
> > the hardware IR to make the packet mangling. FLOW_ACTION_MANGLE_MAX_WORDS
> > defines the maximum number of words from one given offset (currently 4
> > words).
> >
> > Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
>
> What's the point of this?
> Why do you need to be able to do this with a single action? It doesn't
> look like this extra 70 lines of code is actually buying you anything,
> and it makes more work for any other drivers that want to implement the
> offload API.
It looks to me this limitation is coming from tc pedit.
Four actions to mangle an IPv6 address consume more memory when making
the translation, and if you expect a lot of rules.
I think drivers can do more than one 32-bit word mangling in one go.
^ permalink raw reply
* Re: [PATCH net-next v2 6/9] net: macsec: hardware offloading infrastructure
From: Sabrina Dubroca @ 2019-08-20 14:41 UTC (permalink / raw)
To: Antoine Tenart
Cc: Igor Russkikh, Andrew Lunn, davem@davemloft.net,
f.fainelli@gmail.com, hkallweit1@gmail.com,
netdev@vger.kernel.org, linux-kernel@vger.kernel.org,
thomas.petazzoni@bootlin.com, alexandre.belloni@bootlin.com,
allan.nielsen@microchip.com, camelia.groza@nxp.com,
Simon Edelhaus, Pavel Belous
In-Reply-To: <20190820100140.GA3292@kwain>
2019-08-20, 12:01:40 +0200, Antoine Tenart wrote:
> So it seems the ability to enable or disable the offloading on a given
> interface is the main missing feature. I'll add that, however I'll
> probably (at least at first):
>
> - Have the interface to be fully offloaded or fully handled in s/w (with
> errors being thrown if a given configuration isn't supported). Having
> both at the same time on a given interface would be tricky because of
> the MACsec validation parameter.
>
> - Won't allow to enable/disable the offloading of there are rules in
> place, as we're not sure the same rules would be accepted by the other
> implementation.
That's probably quite problematic actually, because to do that you
need to be able to resync the state between software and hardware,
particularly packet numbers. So, yeah, we're better off having it
completely blocked until we have a working implementation (if that
ever happens).
However, that means in case the user wants to set up something that's
not offloadable, they'll have to:
- configure the offloaded version until EOPNOTSUPP
- tear everything down
- restart from scratch without offloading
That's inconvenient.
Talking about packet numbers, can you describe how PN exhaustion is
handled? I couldn't find much about packet numbers at all in the
driver patches (I hope the hw doesn't wrap around from 2^32-1 to 0 on
the same SA). At some point userspace needs to know that we're
getting close to 2^32 and that it's time to re-key. Since the whole
TX path of the software implementation is bypassed, it looks like the
PN (as far as drivers/net/macsec.c is concerned) never increases, so
userspace can't know when to negotiate a new SA.
> I'm not sure if we should allow to mix the implementations on a given
> physical interface (by having two MACsec interfaces attached) as the
> validation would be impossible to do (we would have no idea if a
> packet was correctly handled by the offloading part or just not being
> a MACsec packet in the first place, in Rx).
That's something that really bothers me with this proposal. Quoting
from the commit message:
> the packets seen by the networking stack on both the physical and
> MACsec virtual interface are exactly the same
If the HW/driver is expected to strip the sectag, I don't see how we
could ever have multiple secy's at the same time and demultiplex
properly between them. That's part of the reason why I chose to have
virtual interfaces: without them, picking the right secy on TX gets
weird.
AFAICT, it means that any filters (tc, tcpdump) need to be different
between offloaded and non-offloaded cases.
And it's going to be confusing to the administrator when they look at
tcpdumps expecting to see MACsec frames.
I don't see how this implementation handles non-macsec traffic (on TX,
that would be packets sent directly through the real interface, for
example by wpa_supplicant - on RX, incoming MKA traffic for
wpa_supplicant). Unless I missed something, incoming MKA traffic will
end up on the macsec interface as well as the lower interface (not
entirely critical, as long as wpa_supplicant can grab it on the lower
device, but not consistent with the software implementation). How does
the driver distinguish traffic that should pass through unmodified
from traffic that the HW needs to encapsulate and encrypt?
If you look at IPsec offloading, the networking stack builds up the
ESP header, and passes the unencrypted data down to the driver. I'm
wondering if the same would be possible with MACsec offloading: the
macsec virtual interface adds the header (and maybe a dummy ICV), and
then the HW does the encryption. In case of HW that needs to add the
sectag itself, the driver would first strip the headers that the stack
created. On receive, the driver would recreate a sectag and the macsec
interface would just skip all verification (decrypt, PN).
--
Sabrina
^ permalink raw reply
* Re: [PATCH bpf-next] xsk: proper socket state check in xsk_poll
From: Daniel Borkmann @ 2019-08-20 14:30 UTC (permalink / raw)
To: Björn Töpel, syzbot+c82697e3043781e08802, ast, netdev
Cc: bjorn.topel, bpf, davem, hawk, jakub.kicinski, john.fastabend,
jonathan.lemon, kafai, linux-kernel, magnus.karlsson,
songliubraving, syzkaller-bugs, xdp-newbies, yhs, hdanton
In-Reply-To: <20190820100405.25564-1-bjorn.topel@gmail.com>
On 8/20/19 12:04 PM, Björn Töpel wrote:
> From: Björn Töpel <bjorn.topel@intel.com>
>
> The poll() implementation for AF_XDP sockets did not perform the
> proper state checks, prior accessing the socket umem. This patch fixes
> that by performing a xsk_is_bound() check.
>
> Suggested-by: Hillf Danton <hdanton@sina.com>
> Reported-by: syzbot+c82697e3043781e08802@syzkaller.appspotmail.com
> Fixes: 77cd0d7b3f25 ("xsk: add support for need_wakeup flag in AF_XDP rings")
> Signed-off-by: Björn Töpel <bjorn.topel@intel.com>
> ---
> net/xdp/xsk.c | 14 ++++++++++++--
> 1 file changed, 12 insertions(+), 2 deletions(-)
>
> diff --git a/net/xdp/xsk.c b/net/xdp/xsk.c
> index ee4428a892fa..08bed5e92af4 100644
> --- a/net/xdp/xsk.c
> +++ b/net/xdp/xsk.c
> @@ -356,13 +356,20 @@ static int xsk_generic_xmit(struct sock *sk, struct msghdr *m,
> return err;
> }
>
> +static bool xsk_is_bound(struct xdp_sock *xs)
> +{
> + struct net_device *dev = READ_ONCE(xs->dev);
> +
> + return dev && xs->state == XSK_BOUND;
> +}
> +
> static int xsk_sendmsg(struct socket *sock, struct msghdr *m, size_t total_len)
> {
> bool need_wait = !(m->msg_flags & MSG_DONTWAIT);
> struct sock *sk = sock->sk;
> struct xdp_sock *xs = xdp_sk(sk);
>
> - if (unlikely(!xs->dev))
> + if (unlikely(!xsk_is_bound(xs)))
> return -ENXIO;
> if (unlikely(!(xs->dev->flags & IFF_UP)))
> return -ENETDOWN;
> @@ -383,6 +390,9 @@ static unsigned int xsk_poll(struct file *file, struct socket *sock,
> struct net_device *dev = xs->dev;
> struct xdp_umem *umem = xs->umem;
>
> + if (unlikely(!xsk_is_bound(xs)))
> + return mask;
> +
> if (umem->need_wakeup)
> dev->netdev_ops->ndo_xsk_wakeup(dev, xs->queue_id,
> umem->need_wakeup);
> @@ -417,7 +427,7 @@ static void xsk_unbind_dev(struct xdp_sock *xs)
> {
> struct net_device *dev = xs->dev;
>
> - if (!dev || xs->state != XSK_BOUND)
> + if (!xsk_is_bound(xs))
> return;
I think I'm a bit confused by your READ_ONCE() usage. ;-/ I can see why you're
using it in xsk_is_bound() above, but then at the same time all the other callbacks
like xsk_poll() or xsk_unbind_dev() above have a struct net_device *dev = xs->dev
right before the test. Could you elaborate?
Thanks,
Daniel
^ permalink raw reply
* Re: [PATCH net-next v3 2/4] net: mdio: add PTP offset compensation to mdiobus_write_sts
From: Miroslav Lichvar @ 2019-08-20 14:25 UTC (permalink / raw)
To: Hubert Feurstein
Cc: netdev, lkml, Andrew Lunn, Richard Cochran, Florian Fainelli,
Heiner Kallweit, Vladimir Oltean, David S. Miller
In-Reply-To: <CAFfN3gW-4avfnrV7t-2nC+cVt3sgMD33L44P4PGU-MCAtuR+XA@mail.gmail.com>
On Tue, Aug 20, 2019 at 02:29:27PM +0200, Hubert Feurstein wrote:
> Am Di., 20. Aug. 2019 um 11:49 Uhr schrieb Miroslav Lichvar
> > This is important to not break the estimation of maximum error in the
> > measured offset. Applications using the ioctl may assume that the
> > maximum error is (post_ts-pre_ts)/2 (i.e. half of the delay printed by
> > phc2sys). That would not work if the delay could be occasionally 50
> > microseconds for instance, i.e. the post_ts timestamp would be earlier
> > than the PHC timestamp.
> >
> If the timestamps are taken in the MDIO driver (imx-fec in my case), then
> everything is quite deterministic (see results in the cover letter). Of course,
> it still can be improved slightly, by splitting up the writel into iowmb and
> write_relaxed and disable the interrupts while capturing the timestamps
> (as I did in my original RFC patch). But phc2sys takes by default 5 measurements
> and uses the one with the smallest delay, so this shouldn't be necessary.
The delay that phc2sys sees is the difference between post_ts and
pre_ts, which doesn't contain the actual delay, right? So, I'm not
sure how well the phc2sys filtering actually works. Even if the
measured delay was related to the write delay, would be 5 measurements
always enough to get a "correct" sample?
> Although, by adding 2 * ptp_sts_offset the system timestamp to post_ts
> the timestamp is aligned with the PHC timestamp, but this also increases
> the delay which is reported by phc2sys (~26us). But the maximum error
> which must be expected is definitely much less (< 1us). So maybe it is better
> to shift both timestamps pre_ts and post_ts by ptp_sts_offset.
If you could guarantee that [pre_ts + ptp_sts_offset, post_ts +
ptp_sts_offset] always contains the PHC timestamps, then that would be
great. From what Andrew is writing, this doesn't seem to be the case.
I'd suggest a different approach:
- specify a minimum delay for the write and a minimum delay for the
completion (if they are not equal)
- take a second "post" system timestamp after the completion
- adjust pre_ts and post_ts so that the middle point is equal to what
you have now, but the interval contains both
pre_ts + min_write_delay and post2_ts - min_completion_delay
This way you get the best stability and also a delay that correctly
estimates the maximum error.
--
Miroslav Lichvar
^ permalink raw reply
* Re: [PATCH v6 6/7] nfc: pn533: Add autopoll capability
From: Lars Poeschel @ 2019-08-20 14:32 UTC (permalink / raw)
To: Johan Hovold
Cc: Allison Randal, Steve Winslow, Greg Kroah-Hartman,
Gustavo A. R. Silva, Kate Stewart, Thomas Gleixner,
open list:NFC SUBSYSTEM, open list
In-Reply-To: <20190820122344.GK32300@localhost>
On Tue, Aug 20, 2019 at 02:23:44PM +0200, Johan Hovold wrote:
> On Tue, Aug 20, 2019 at 02:03:43PM +0200, Lars Poeschel wrote:
> > drivers/nfc/pn533/pn533.c | 193 +++++++++++++++++++++++++++++++++++++-
> > drivers/nfc/pn533/pn533.h | 10 +-
> > 2 files changed, 197 insertions(+), 6 deletions(-)
> >
> > diff --git a/drivers/nfc/pn533/pn533.c b/drivers/nfc/pn533/pn533.c
> > index a8c756caa678..7e915239222b 100644
> > --- a/drivers/nfc/pn533/pn533.c
> > +++ b/drivers/nfc/pn533/pn533.c
> > @@ -185,6 +185,32 @@ struct pn533_cmd_jump_dep_response {
> > u8 gt[];
> > } __packed;
> >
> > +struct pn532_autopoll_resp {
> > + u8 type;
> > + u8 ln;
> > + u8 tg;
> > + u8 tgdata[];
> > +} __packed;
>
> No need for __packed.
I did a quick test without the __packed and indeed: It worked. I'd
sworn that it is needed in this place, because this autopoll response is
data that the nfc chip puts on the serial wire without padding inbetween
and this struct is used to access this data and without the __packed the
compiler should be allowed to put padding bytes between the struct
fields. But it choose to not do it. I am still not shure, why this
happens, but ok. I can remove the __packed.
> > +static int pn533_autopoll_complete(struct pn533 *dev, void *arg,
> > + struct sk_buff *resp)
> > +{
> > + u8 nbtg;
> > + int rc;
> > + struct pn532_autopoll_resp *apr;
> > + struct nfc_target nfc_tgt;
> > +
> > + if (IS_ERR(resp)) {
> > + rc = PTR_ERR(resp);
> > +
> > + nfc_err(dev->dev, "%s autopoll complete error %d\n",
> > + __func__, rc);
> > +
> > + if (rc == -ENOENT) {
> > + if (dev->poll_mod_count != 0)
> > + return rc;
> > + goto stop_poll;
> > + } else if (rc < 0) {
> > + nfc_err(dev->dev,
> > + "Error %d when running autopoll\n", rc);
> > + goto stop_poll;
> > + }
> > + }
> > +
> > + nbtg = resp->data[0];
> > + if ((nbtg > 2) || (nbtg <= 0))
> > + return -EAGAIN;
> > +
> > + apr = (struct pn532_autopoll_resp *)&resp->data[1];
> > + while (nbtg--) {
> > + memset(&nfc_tgt, 0, sizeof(struct nfc_target));
> > + switch (apr->type) {
> > + case PN532_AUTOPOLL_TYPE_ISOA:
> > + dev_dbg(dev->dev, "ISOA");
>
> You forgot the '\n' here and elsewhere (some nfc_err as well).
I can add them. I will wait a bit for more review comments before
posting a new patchset.
Thanks so far for your quick review,
Lars
^ permalink raw reply
* [PATCH v2 net-next] netdevsim: Fix build error without CONFIG_INET
From: YueHaibing @ 2019-08-20 14:14 UTC (permalink / raw)
To: davem, idosch, jiri, mcroce, jakub.kicinski
Cc: linux-kernel, netdev, YueHaibing
In-Reply-To: <20190819120825.74460-1-yuehaibing@huawei.com>
If CONFIG_INET is not set, building fails:
drivers/net/netdevsim/dev.o: In function `nsim_dev_trap_report_work':
dev.c:(.text+0x67b): undefined reference to `ip_send_check'
Use ip_fast_csum instead of ip_send_check to avoid
dependencies on CONFIG_INET.
Reported-by: Hulk Robot <hulkci@huawei.com>
Fixes: da58f90f11f5 ("netdevsim: Add devlink-trap support")
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
---
v2: use ip_fast_csum instead of ip_send_check
---
drivers/net/netdevsim/dev.c | 3 ++-
1 file changed, 2 insertions(+), 1 deletion(-)
diff --git a/drivers/net/netdevsim/dev.c b/drivers/net/netdevsim/dev.c
index c5b0261..39cdb6c 100644
--- a/drivers/net/netdevsim/dev.c
+++ b/drivers/net/netdevsim/dev.c
@@ -389,7 +389,8 @@ static struct sk_buff *nsim_dev_trap_skb_build(void)
iph->ihl = 0x5;
iph->tot_len = htons(tot_len);
iph->ttl = 100;
- ip_send_check(iph);
+ iph->check = 0;
+ iph->check = ip_fast_csum((unsigned char *)iph, iph->ihl);
udph = skb_put_zero(skb, sizeof(struct udphdr) + data_len);
get_random_bytes(&udph->source, sizeof(u16));
--
2.7.4
^ permalink raw reply related
* Re: [PATCH net-next 1/2] net: flow_offload: mangle 128-bit packet field with one action
From: Edward Cree @ 2019-08-20 14:15 UTC (permalink / raw)
To: Pablo Neira Ayuso, netfilter-devel
Cc: davem, netdev, jakub.kicinski, jiri, vladbu
In-Reply-To: <20190820105225.13943-1-pablo@netfilter.org>
On 20/08/2019 11:52, Pablo Neira Ayuso wrote:
> The existing infrastructure needs the front-end to generate up to four
> actions (one for each 32-bit word) to mangle an IPv6 address. This patch
> allows you to mangle fields than are longer than 4-bytes with one single
> action. Drivers have been adapted to this new representation following a
> simple approach, that is, iterate over the array of words and configure
> the hardware IR to make the packet mangling. FLOW_ACTION_MANGLE_MAX_WORDS
> defines the maximum number of words from one given offset (currently 4
> words).
>
> Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
What's the point of this?
Why do you need to be able to do this with a single action? It doesn't
look like this extra 70 lines of code is actually buying you anything,
and it makes more work for any other drivers that want to implement the
offload API.
^ permalink raw reply
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