Commit Graph

1764 Commits

Author SHA1 Message Date
Oleksij Rempel 3e47495fc4 net: dsa: qca: ar9331: fix sleeping function called from invalid context bug
With lockdep enabled, we will get following warning:

 ar9331_switch ethernet.1:10 lan0 (uninitialized): PHY [!ahb!ethernet@1a000000!mdio!switch@10:00] driver [Qualcomm Atheros AR9331 built-in PHY] (irq=13)
 BUG: sleeping function called from invalid context at kernel/locking/mutex.c:935
 in_atomic(): 1, irqs_disabled(): 1, non_block: 0, pid: 18, name: kworker/0:1
 INFO: lockdep is turned off.
 irq event stamp: 602
 hardirqs last  enabled at (601): [<8073fde0>] _raw_spin_unlock_irq+0x3c/0x80
 hardirqs last disabled at (602): [<8073a4f4>] __schedule+0x184/0x800
 softirqs last  enabled at (0): [<80080f60>] copy_process+0x578/0x14c8
 softirqs last disabled at (0): [<00000000>] 0x0
 CPU: 0 PID: 18 Comm: kworker/0:1 Not tainted 5.10.0-rc3-ar9331-00734-g7d644991df0c #31
 Workqueue: events deferred_probe_work_func
 Stack : 80980000 80980000 8089ef70 80890000 804b5414 80980000 00000002 80b53728
         00000000 800d1268 804b5414 ffffffde 00000017 800afe08 81943860 0f5bfc32
         00000000 00000000 8089ef70 819436c0 ffffffea 00000000 00000000 00000000
         8194390c 808e353c 0000000f 66657272 80980000 00000000 00000000 80890000
         804b5414 80980000 00000002 80b53728 00000000 00000000 00000000 80d40000
         ...
 Call Trace:
 [<80069ce0>] show_stack+0x9c/0x140
 [<800afe08>] ___might_sleep+0x220/0x244
 [<8073bfb0>] __mutex_lock+0x70/0x374
 [<8073c2e0>] mutex_lock_nested+0x2c/0x38
 [<804b5414>] regmap_update_bits_base+0x38/0x8c
 [<804ee584>] regmap_update_bits+0x1c/0x28
 [<804ee714>] ar9331_sw_unmask_irq+0x34/0x60
 [<800d91f0>] unmask_irq+0x48/0x70
 [<800d93d4>] irq_startup+0x114/0x11c
 [<800d65b4>] __setup_irq+0x4f4/0x6d0
 [<800d68a0>] request_threaded_irq+0x110/0x190
 [<804e3ef0>] phy_request_interrupt+0x4c/0xe4
 [<804df508>] phylink_bringup_phy+0x2c0/0x37c
 [<804df7bc>] phylink_of_phy_connect+0x118/0x130
 [<806c1a64>] dsa_slave_create+0x3d0/0x578
 [<806bc4ec>] dsa_register_switch+0x934/0xa20
 [<804eef98>] ar9331_sw_probe+0x34c/0x364
 [<804eb48c>] mdio_probe+0x44/0x70
 [<8049e3b4>] really_probe+0x30c/0x4f4
 [<8049ea10>] driver_probe_device+0x264/0x26c
 [<8049bc10>] bus_for_each_drv+0xb4/0xd8
 [<8049e684>] __device_attach+0xe8/0x18c
 [<8049ce58>] bus_probe_device+0x48/0xc4
 [<8049db70>] deferred_probe_work_func+0xdc/0xf8
 [<8009ff64>] process_one_work+0x2e4/0x4a0
 [<800a0770>] worker_thread+0x2a8/0x354
 [<800a774c>] kthread+0x16c/0x174
 [<8006306c>] ret_from_kernel_thread+0x14/0x1c

 ar9331_switch ethernet.1:10 lan1 (uninitialized): PHY [!ahb!ethernet@1a000000!mdio!switch@10:02] driver [Qualcomm Atheros AR9331 built-in PHY] (irq=13)
 DSA: tree 0 setup

To fix it, it is better to move access to MDIO register to the .irq_bus_sync_unlock
call back.

Fixes: ec6698c272 ("net: dsa: add support for Atheros AR9331 built-in switch")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20201211110317.17061-1-o.rempel@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-16 10:57:35 -08:00
Rasmus Villemoes 49506a9ba0 net: dsa: mv88e6xxx: don't set non-existing learn2all bit for 6220/6250
The 6220 and 6250 switches do not have a learn2all bit in global1, ATU
control register; bit 3 is reserverd.

On the switches that do have that bit, it is used to control whether
learning frames are sent out the ports that have the message_port bit
set. So rather than adding yet another chip method, use the existence
of the ->port_setup_message_port method as a proxy for determining
whether the learn2all bit exists (and should be set).

Signed-off-by: Rasmus Villemoes <rasmus.villemoes@prevas.dk>
Link: https://lore.kernel.org/r/20201210110645.27765-1-rasmus.villemoes@prevas.dk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-14 17:25:03 -08:00
DENG Qingfang 771c890156 net: dsa: mt7530: enable MTU normalization
MT7530 has a global RX length register, so we are actually changing its
MRU.
Enable MTU normalization for this reason.

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Acked-by: Landen Chao <landen.chao@mediatek.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/20201210170322.3433-1-dqfext@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-12 15:00:56 -08:00
Jakub Kicinski 46d5e62dd3 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
xdp_return_frame_bulk() needs to pass a xdp_buff
to __xdp_return().

strlcpy got converted to strscpy but here it makes no
functional difference, so just keep the right code.

Conflicts:
	net/netfilter/nf_tables_api.c

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-11 22:29:38 -08:00
Zheng Yongjun 965b8b2bad net: dsa: simplify the return rtl8366_vlan_prepare()
Simplify the return expression.

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-09 17:05:37 -08:00
Zheng Yongjun 59d4c93d31 net: mv88e6xxx: convert comma to semicolon
Replace a comma between expression statements by a semicolon.

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-09 16:23:08 -08:00
DENG Qingfang ea6d5c924e net: dsa: mt7530: support setting ageing time
MT7530 has a global address age control register, so use it to set
ageing time.

The applied timer is (AGE_CNT + 1) * (AGE_UNIT + 1) seconds

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2020-12-08 16:18:26 -08:00
Vladimir Oltean edd2410b16 net: mscc: ocelot: fix dropping of unknown IPv4 multicast on Seville
The current assumption is that the felix DSA driver has flooding knobs
per traffic class, while ocelot switchdev has a single flooding knob.
This was correct for felix VSC9959 and ocelot VSC7514, but with the
introduction of seville VSC9953, we see a switch driven by felix.c which
has a single flooding knob.

So it is clear that we must do what should have been done from the
beginning, which is not to overwrite the configuration done by ocelot.c
in felix, but instead to teach the common ocelot library about the
differences in our switches, and set up the flooding PGIDs centrally.

The effect that the bogus iteration through FELIX_NUM_TC has upon
seville is quite dramatic. ANA_FLOODING is located at 0x00b548, and
ANA_FLOODING_IPMC is located at 0x00b54c. So the bogus iteration will
actually overwrite ANA_FLOODING_IPMC when attempting to write
ANA_FLOODING[1]. There is no ANA_FLOODING[1] in sevile, just ANA_FLOODING.

And when ANA_FLOODING_IPMC is overwritten with a bogus value, the effect
is that ANA_FLOODING_IPMC gets the value of 0x0003CF7D:
	MC6_DATA = 61,
	MC6_CTRL = 61,
	MC4_DATA = 60,
	MC4_CTRL = 0.
Because MC4_CTRL is zero, this means that IPv4 multicast control packets
are not flooded, but dropped. An invalid configuration, and this is how
the issue was actually spotted.

Reported-by: Eldar Gasanov <eldargasanov2@gmail.com>
Reported-by: Maxim Kochetkov <fido_max@inbox.ru>
Tested-by: Eldar Gasanov <eldargasanov2@gmail.com>
Fixes: 84705fc165 ("net: dsa: felix: introduce support for Seville VSC9953 switch")
Fixes: 3c7b51bd39 ("net: dsa: felix: allow flooding for all traffic classes")
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Link: https://lore.kernel.org/r/20201204175416.1445937-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-05 15:41:34 -08:00
Michael Grzeschik 02ffbb0270 net: dsa: microchip: ksz8795: use num_vlans where possible
The value of the define VLAN_TABLE_ENTRIES can be derived from
num_vlans. This patch is using the variable num_vlans instead and
removes the extra define.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-02 17:16:29 -08:00
Michael Grzeschik 241ed719bc net: dsa: microchip: ksz8795: use port_cnt instead of TOTOAL_PORT_NUM
To get the driver working with other chips using different port counts
the dyn_mac_table should be flushed depending on the amount of available
ports. This patch remove the extra define TOTOAL_PORT_NUM and is
making use of the dynamic port_cnt variable instead.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-02 17:16:29 -08:00
Michael Grzeschik c9f4633b93 net: dsa: microchip: remove usage of mib_port_count
The variable mib_port_cnt has the same meaning as port_cnt.
This driver removes the extra variable and is using port_cnt
everywhere instead.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-02 17:16:29 -08:00
Michael Grzeschik 94374dd162 net: dsa: microchip: ksz8795: align port_cnt usage with other microchip drivers
The ksz8795 driver is using port_cnt differently to the other microchip
DSA drivers. It sets it to the external physical port count, than the
whole port count (including the cpu port). This patch is aligning the
variables purpose with the other microchip drivers.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-02 17:16:29 -08:00
Michael Grzeschik 557d1a1fba net: dsa: microchip: remove superfluous num_ports assignment
The variable num_ports is already assigned in the init function. The
drivers individual init function already handles the different purpose
of port_cnt vs port_cnt + 1. This patch removes the extra assignment of
the variable.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-02 17:16:29 -08:00
Michael Grzeschik 4ce2a984ab net: dsa: microchip: ksz8795: use phy_port_cnt where possible
The driver is currently hard coded to SWITCH_PORT_NUM being
(TOTAL_PORT_NUM - 1) which is limited to 4 user ports for the ksz8795.
The phy_port_cnt is referring to its user ports. The patch removes the
extra define and use the assigned variable phy_port_cnt instead so the
driver can be used on different switches.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-02 17:16:29 -08:00
Michael Grzeschik 65fe1acf07 net: dsa: microchip: ksz8795: use mib_cnt where possible
The variable mib_cnt is assigned with TOTAL_SWITCH_COUNTER_NUM. This
value can also be derived from the array size of mib_names. This patch
uses this calculated value instead, removes the extra define and uses
mib_cnt everywhere possible instead of the static define
TOTAL_SWITCH_COUNTER_NUM. Keeping it in a separate variable instead of
using ARRAY_SIZE everywhere instead makes the driver more flexible for
future use of devices with different amount of counters.

Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-02 17:16:29 -08:00
Michael Grzeschik 31b62c78c1 net: dsa: microchip: ksz8795: use reg_mib_cnt where possible
The extra define SWITCH_COUNTER_NUM is a copy of the KSZ8795_COUNTER_NUM
define. This patch initializes reg_mib_cnt with KSZ8795_COUNTER_NUM,
makes use of reg_mib_cnt everywhere instead and removes the extra
define.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-02 17:16:29 -08:00
Michael Grzeschik 7fc32b41fe net: dsa: microchip: ksz8795: move variable assignments from detect to init
This patch moves all variable assignments to the init function. It
leaves the detect function for its single purpose to detect which chip
version is found.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-02 17:16:29 -08:00
Michael Grzeschik 68a1b676db net: dsa: microchip: ksz8795: remove superfluous port_cnt assignment
The port_cnt assignment will be done again in the init function.
This patch removes the previous assignment in the detect function.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-02 17:16:28 -08:00
Michael Grzeschik 453aa4cd7e net: dsa: microchip: ksz8795: remove unused last_port variable
The variable last_port is not used anywhere, this patch removes it.

Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Michael Grzeschik <m.grzeschik@pengutronix.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-12-02 17:16:28 -08:00
Chris Packham 0fd5d79efa net: dsa: mv88e6xxx: Handle error in serdes_get_regs
If the underlying read operation failed we would end up writing stale
data to the supplied buffer. This would end up with the last
successfully read value repeating. Fix this by only writing the data
when we know the read was good. This will mean that failed values will
return 0xffff.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-25 17:58:06 -08:00
Chris Packham 5c19bc8b57 net: dsa: mv88e6xxx: Add serdes interrupt support for MV88E6097
The MV88E6097 presents the serdes interrupts for ports 8 and 9 via the
Switch Global 2 registers. There is no additional layer of
enablinh/disabling the serdes interrupts like other mv88e6xxx switches.
Even though most of the serdes behaviour is the same as the MV88E6185
that chip does not provide interrupts for serdes events so unlike
earlier commits the functions added here are specific to the MV88E6097.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-25 17:58:06 -08:00
Chris Packham f5be107c33 net: dsa: mv88e6xxx: Support serdes ports on MV88E6097/6095/6185
Implement serdes_power, serdes_get_lane and serdes_pcs_get_state ops for
the MV88E6097/6095/6185 so that ports 8 & 9 can be supported as serdes
ports and directly connected to other network interfaces or to SFPs
without a PHY.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-25 17:58:06 -08:00
Chris Packham 4efe766290 net: dsa: mv88e6xxx: Don't force link when using in-band-status
When a port is configured with 'managed = "in-band-status"' switch chips
like the 88E6390 need to propagate the SERDES link state to the MAC
because the link state is not correctly detected. This causes problems
on the 88E6185/88E6097 where the link partner won't see link state
changes because we're forcing the link.

To address this introduce a new device specific op port_sync_link() and
push the logic from mv88e6xxx_mac_link_up() into that. Provide an
implementation for the 88E6185 like devices which doesn't force the
link.

Signed-off-by: Chris Packham <chris.packham@alliedtelesis.co.nz>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-25 17:58:06 -08:00
Christian Eggers 8c4599f498 net: dsa: microchip: ksz8795: setup SPI mode
This should be done in the device driver instead of the device tree.

Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-25 17:53:45 -08:00
Christian Eggers 9ed602bac9 net: dsa: microchip: ksz9477: setup SPI mode
This should be done in the device driver instead of the device tree.

Signed-off-by: Christian Eggers <ceggers@arri.de>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-25 17:53:45 -08:00
Christian Eggers 44e53c8882 net: dsa: microchip: support for "ethernet-ports" node
The dsa.yaml device tree binding allows "ethernet-ports" (preferred) and
"ports".

Signed-off-by: Christian Eggers <ceggers@arri.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-25 17:53:45 -08:00
Kurt Kanzenbach ed5ef9fb20 net: dsa: hellcreek: Don't print error message on defer
When DSA is not loaded when the driver is probed an error message is
printed. But, that's not really an error, just a defer. Use dev_err_probe()
instead.

Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-23 16:57:21 -08:00
Jakub Kicinski 56495a2442 Merge https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-19 19:08:46 -08:00
Andrew Lunn a3dcb3e7e7 net: dsa: mv88e6xxx: Wait for EEPROM done after HW reset
When the switch is hardware reset, it reads the contents of the
EEPROM. This can contain instructions for programming values into
registers and to perform waits between such programming. Reading the
EEPROM can take longer than the 100ms mv88e6xxx_hardware_reset() waits
after deasserting the reset GPIO. So poll the EEPROM done bit to
ensure it is complete.

Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Ruslan Sushko <rus@sushko.dev>
Link: https://lore.kernel.org/r/20201116164301.977661-1-rus@sushko.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-18 11:24:44 -08:00
Martin Blumenstingl 2a1828e378 net: lantiq: Wait for the GPHY firmware to be ready
A user reports (slightly shortened from the original message):
  libphy: lantiq,xrx200-mdio: probed
  mdio_bus 1e108000.switch-mii: MDIO device at address 17 is missing.
  gswip 1e108000.switch lan: no phy at 2
  gswip 1e108000.switch lan: failed to connect to port 2: -19
  lantiq,xrx200-net 1e10b308.eth eth0: error -19 setting up slave phy

This is a single-port board using the internal Fast Ethernet PHY. The
user reports that switching to PHY scanning instead of configuring the
PHY within device-tree works around this issue.

The documentation for the standalone variant of the PHY11G (which is
probably very similar to what is used inside the xRX200 SoCs but having
the firmware burnt onto that standalone chip in the factory) states that
the PHY needs 300ms to be ready for MDIO communication after releasing
the reset.

Add a 300ms delay after initializing all GPHYs to ensure that the GPHY
firmware had enough time to initialize and to appear on the MDIO bus.
Unfortunately there is no (known) documentation on what the minimum time
to wait after releasing the reset on an internal PHY so play safe and
take the one for the external variant. Only wait after the last GPHY
firmware is loaded to not slow down the initialization too much (
xRX200 has two GPHYs but newer SoCs have at least three GPHYs).

Fixes: 14fceff477 ("net: dsa: Add Lantiq / Intel DSA driver for vrx200")
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Acked-by: Hauke Mehrtens <hauke@hauke-m.de>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20201115165757.552641-1-martin.blumenstingl@googlemail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-16 13:38:18 -08:00
Tobias Waldekranz 92307069a9 net: dsa: mv88e6xxx: Avoid VTU corruption on 6097
As soon as you add the second port to a VLAN, all other port
membership configuration is overwritten with zeroes. The HW interprets
this as all ports being "unmodified members" of the VLAN.

In the simple case when all ports belong to the same VLAN, switching
will still work. But using multiple VLANs or trying to set multiple
ports as tagged members will not work.

On the 6352, doing a VTU GetNext op, followed by an STU GetNext op
will leave you with both the member- and state- data in the VTU/STU
data registers. But on the 6097 (which uses the same implementation),
the STU GetNext will override the information gathered from the VTU
GetNext.

Separate the two stages, parsing the result of the VTU GetNext before
doing the STU GetNext.

We opt to update the existing implementation for all applicable chips,
as opposed to creating a separate callback for 6097, because although
the previous implementation did work for (at least) 6352, the
datasheet does not mention the masking behavior.

Fixes: ef6fcea37f ("net: dsa: mv88e6xxx: get STU entry on VTU GetNext")
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Link: https://lore.kernel.org/r/20201112114335.27371-1-tobias@waldekranz.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-14 11:29:29 -08:00
Jakub Kicinski e1d9d7b913 Merge https://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-12 16:54:48 -08:00
Tobias Waldekranz e545f86573 net: dsa: mv88e6xxx: Add helper to get a chip's max_vid
Most of the other chip info constants have helpers to get at them; add
one for max_vid to keep things consistent.

Suggested-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201110185720.18228-1-tobias@waldekranz.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-11 18:04:23 -08:00
zhangxiaoxu 2bae900b94 net: dsa: mv88e6xxx: Fix memleak in mv88e6xxx_region_atu_snapshot
When mv88e6xxx_fid_map return error, we lost free the table.

Fix it.

Fixes: bfb2554289 ("net: dsa: mv88e6xxx: Add devlink regions")
Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhangxiaoxu <zhangxiaoxu5@huawei.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201109144416.1540867-1-zhangxiaoxu5@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-10 17:49:06 -08:00
Colin Ian King 2776d2320a net: dsa: fix unintended sign extension on a u16 left shift
The left shift of u16 variable high is promoted to the type int and
then sign extended to a 64 bit u64 value.  If the top bit of high is
set then the upper 32 bits of the result end up being set by the
sign extension. Fix this by explicitly casting the value in high to
a u64 before left shifting by 16 places.

Also, remove the initialisation of variable value to 0 at the start
of each loop iteration as the value is never read and hence the
assignment it is redundant.

Addresses-Coverity: ("Unintended sign extension")
Fixes: e4b27ebc78 ("net: dsa: Add DSA driver for Hirschmann Hellcreek switches")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Reviewed-by: Kurt Kanzenbach <kurt@linutronix.de>
Link: https://lore.kernel.org/r/20201109124008.2079873-1-colin.king@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-10 17:46:20 -08:00
Tobias Waldekranz ca4d632aef net: dsa: mv88e6xxx: Export VTU as devlink region
Export the raw VTU data and related registers in a devlink region so
that it can be inspected from userspace and compared to the current
bridge configuration.

Signed-off-by: Tobias Waldekranz <tobias@waldekranz.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201109082927.8684-1-tobias@waldekranz.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-09 17:43:22 -08:00
Jakub Kicinski ae0d0bb29b Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-06 17:33:38 -08:00
Kurt Kanzenbach 7d9ee2e8ff net: dsa: hellcreek: Add PTP status LEDs
The switch has two controllable I/Os which are usually connected to LEDs. This
is useful to immediately visually see the PTP status.

These provide two signals:

 * is_gm

   This LED can be activated if the current device is the grand master in that
   PTP domain.

 * sync_good

   This LED can be activated if the current device is in sync with the network
   time.

Expose these via the LED framework to be controlled via user space
e.g. linuxptp.

Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-05 14:04:50 -08:00
Kamil Alkhouri f0d4ba9eff net: dsa: hellcreek: Add support for hardware timestamping
The switch has the ability to take hardware generated time stamps per port for
PTPv2 event messages in Rx and Tx direction. That is useful for achieving needed
time synchronization precision for TSN devices/switches. So add support for it.

There are two directions:

 * RX

   The switch has a single register per port to capture a timestamp. That
   mechanism is not used due to correlation problems. If the software processing
   is too slow and a PTPv2 event message is received before the previous one has
   been processed, false timestamps will be captured. Therefore, the switch can
   do "inline" timestamping which means it can insert the nanoseconds part of
   the timestamp directly into the PTPv2 event message. The reserved field (4
   bytes) is leveraged for that. This might not be in accordance with (older)
   PTP standards, but is the only way to get reliable results.

 * TX

   In Tx direction there is no correlation problem, because the software and the
   driver has to ensure that only one event message is "on the fly". However,
   the switch provides also a mechanism to check whether a timestamp is
   lost. That can only happen when a timestamp is read and at this point another
   message is timestamped. So, that lost bit is checked just in case to indicate
   to the user that the driver or the software is somewhat buggy.

Signed-off-by: Kamil Alkhouri <kamil.alkhouri@hs-offenburg.de>
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-05 14:04:49 -08:00
Kamil Alkhouri ddd56dfe52 net: dsa: hellcreek: Add PTP clock support
The switch has internal PTP hardware clocks. Add support for it. There are three
clocks:

 * Synchronized
 * Syntonized
 * Free running

Currently the synchronized clock is exported to user space which is a good
default for the beginning. The free running clock might be exported later
e.g. for implementing 802.1AS-2011/2020 Time Aware Bridges (TAB). The switch
also supports cross time stamping for that purpose.

The implementation adds support setting/getting the time as well as offset and
frequency adjustments. However, the clock only holds a partial timeofday
timestamp. This is why we track the seconds completely in software (see overflow
work and last_ts).

Furthermore, add the PTP multicast addresses into the FDB to forward that
packages only to the CPU port where they are processed by a PTP program.

Signed-off-by: Kamil Alkhouri <kamil.alkhouri@hs-offenburg.de>
Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Acked-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-05 14:04:49 -08:00
Kurt Kanzenbach e4b27ebc78 net: dsa: Add DSA driver for Hirschmann Hellcreek switches
Add a basic DSA driver for Hirschmann Hellcreek switches. Those switches are
implementing features needed for Time Sensitive Networking (TSN) such as support
for the Time Precision Protocol and various shapers like the Time Aware Shaper.

This driver includes basic support for networking:

 * VLAN handling
 * FDB handling
 * Port statistics
 * STP
 * Phylink

Signed-off-by: Kurt Kanzenbach <kurt@linutronix.de>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-05 14:04:49 -08:00
DENG Qingfang 9470174e75 net: dsa: mt7530: support setting MTU
MT7530/7531 has a global RX packet length register, which can be used
to set MTU.

Supported packet length values are 1522 (1518 if untagged), 1536,
1552, and multiple of 1024 (from 2048 to 15360).

Signed-off-by: DENG Qingfang <dqfext@gmail.com>
Link: https://lore.kernel.org/r/20201103050618.11419-1-dqfext@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-04 16:48:11 -08:00
Tom Rix 0e8c266c59 net: dsa: mt7530: remove unneeded semicolon
A semicolon is not needed after a switch statement.

Signed-off-by: Tom Rix <trix@redhat.com>
Link: https://lore.kernel.org/r/20201031153047.2147341-1-trix@redhat.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-02 17:51:28 -08:00
Vladimir Oltean 9a72068080 net: dsa: felix: improve the workaround for multiple native VLANs on NPI port
After the good discussion with Florian from here:
https://lore.kernel.org/netdev/20200911000337.htwr366ng3nc3a7d@skbuf/

I realized that the VLAN settings on the NPI port (the hardware "CPU port",
in DSA parlance) don't actually make any difference, because that port
is hardcoded in hardware to use what mv88e6xxx would call "unmodified"
egress policy for VLANs.

So earlier patch 183be6f967 ("net: dsa: felix: send VLANs on CPU port
as egress-tagged") was incorrect in the sense that it didn't actually
make the VLANs be sent on the NPI port as egress-tagged. It only made
ocelot_port_set_native_vlan shut up.

Now that we have moved the check from ocelot_port_set_native_vlan to
ocelot_vlan_prepare, we can simply shunt ocelot_vlan_prepare from DSA,
and avoid calling it. This is the correct way to deal with things,
because the NPI port configuration is DSA-specific, so the ocelot switch
library should not have the check for multiple native VLANs refined in
any way, it is correct the way it is.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-02 17:09:07 -08:00
Vladimir Oltean 2f0402fedf net: mscc: ocelot: deny changing the native VLAN from the prepare phase
Put the preparation phase of switchdev VLAN objects to some good use,
and move the check we already had, for preventing the existence of more
than one egress-untagged VLAN per port, to the preparation phase of the
addition.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-02 17:09:07 -08:00
Jonathan McDowell 99cab7107d net: dsa: qca8k: Fix port MTU setting
The qca8k only supports a switch-wide MTU setting, and the code to take
the max of all ports was only looking at the port currently being set.
Fix to examine all ports.

Reported-by: DENG Qingfang <dqfext@gmail.com>
Fixes: f58d2598cf ("net: dsa: qca8k: implement the port MTU callbacks")
Signed-off-by: Jonathan McDowell <noodles@earth.li>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20201030183315.GA6736@earth.li
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-11-02 15:14:59 -08:00
Russell King 1fb7419198 net: dsa: mv88e6xxx: fix vlan setup
DSA assumes that a bridge which has vlan filtering disabled is not
vlan aware, and ignores all vlan configuration. However, the kernel
software bridge code allows configuration in this state.

This causes the kernel's idea of the bridge vlan state and the
hardware state to disagree, so "bridge vlan show" indicates a correct
configuration but the hardware lacks all configuration. Even worse,
enabling vlan filtering on a DSA bridge immediately blocks all traffic
which, given the output of "bridge vlan show", is very confusing.

Allow the VLAN configuration to be updated on Marvell DSA bridges,
otherwise we end up cutting all traffic when enabling vlan filtering.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Vladimir Oltean <olteanv@gmail.com>
Link: https://lore.kernel.org/r/E1kYAU3-00071C-1G@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-10-30 14:31:00 -07:00
Colin Ian King d978d6d008 net: dsa: bcm_sf2: make const array static, makes object smaller
Don't populate the const array rate_table on the stack but instead it
static. Makes the object code smaller by 46 bytes.

Before:
   text	   data	    bss	    dec	    hex	filename
  29812	   3824	    192	  33828	   8424	drivers/net/dsa/bcm_sf2.o

After:
   text	   data	    bss	    dec	    hex	filename
  29670	   3920	    192	  33782	   83f6	drivers/net/dsa/bcm_sf2.o

(gcc version 10.2.0)

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20201020165029.56383-1-colin.king@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-10-20 20:57:57 -07:00
Maxim Kochetkov a15a6afb3b net: dsa: seville: the packet buffer is 2 megabits, not megabytes
The VSC9953 Seville switch has 2 megabits of buffer split into 4360
words of 60 bytes each. 2048 * 1024 is 2 megabytes instead of 2 megabits.
2 megabits is (2048 / 8) * 1024 = 256 * 1024.

Signed-off-by: Maxim Kochetkov <fido_max@inbox.ru>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Fixes: a63ed92d21 ("net: dsa: seville: fix buffer size of the queue system")
Link: https://lore.kernel.org/r/20201019050625.21533-1-fido_max@inbox.ru
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-10-19 18:03:42 -07:00
Jakub Kicinski 2295cddf99 Merge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Minor conflicts in net/mptcp/protocol.h and
tools/testing/selftests/net/Makefile.

In both cases code was added on both sides in the same place
so just keep both.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2020-10-15 12:43:21 -07:00