There are too many MIB counters that almost nobody needs since commit
d6366ce366 ("generic: ar8216: mib_work_func: read all port mibs
everytime").
In the worker function to poll MIB data, it deals with all ports instead
of only one port every time, which introduces too many mdio operations
that it becomes a heavy CPU load even on not-emulated MDIO bus.
This commit groups MIB counters and enable only TxBytes and RxGoodBytes
by default (both of which are necessary to get swconfig led working.)
and adds an swconfig attribute to allow enabling all counters if users
need them.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
This allows specifying interval of polling MIB counters from userspace
and allow completely turning off MIB counter support by setting
mib_poll_interval to 0.
Since MIB counter polling is a heavy CPU load for GPIO emulated MDIO
bus, disable this behavior by default. Those who wants to use swconfig
LEDs can enable them with qca,mib-poll-interval dts property or with
swconfig command.
Fixes: FS#2230 ("kworker spikes 100% cpu every 2 second.")
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
This allows users to specify a shorter mib poll interval so that the
swconfig leds could behave normal with current get_port_stats()
implementation.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
This applies to ar8216 and ar8236. QCA's newer U-boot will enable
the switch mdio master for FE switches which makes phy inaccessible
from CPU mdio. (e.g. on TP-Link TL-WR941N v7 Chinese version which
uses QCA9558+AR8236.) For these devices PHY probing is broken and
mdio device probing is a must. We also need to disable switch mdio
master in driver for later PHY initialization.
Do a soft reset during hw_init so that mdio master can be disabled
and expose PHYs to CPU mdio for later PHY accessing.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
ar8xxx_mib_capture will update mib counters for all ports. Current
code only update one port at a time and the data for other ports
are lost.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Partially reverts commit eff3549c58.
AR7240 and AR9341 have buggy hardware switch LED trigger. The AR7240
one doesn't blink and the blinking of port0/port5 is reversed on
AR9341 if we swap PHY0 and PHY4. (Only blinking is reversed, which
means LED for PHY0 will lit when PHY0 is link up and will blink when
PHY4 has active link and vice versa.) On these two chips a software
swconfig LED trigger is required.
This commit adds swconfig port stats back but:
1. move checking of mib_t/rxb_id into ar8xxx_chip since we can't
distinguish ar7240sw and ar8216 using only chip id.
2. don't update mib counter in get_port_stat. This function is called
every 0.01s and this capturing procedure will take up a lot of CPU.
We already have a mib_work_func updating mib counters every 2s so
return the saved counter instead of fetching new data. The blinking
rate will be weird but it should solve the previously mentioned CPU
time problem.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
This builtin switch is a bugless ar8216 with different mib counters
and gigabit cpu port.
Atheros uses the same device ID and it's impossible to distinguish
the standalone one and the builtin one. So we add support to mdio
device probe only.
This switch doesn't have buggy vlan tag so it's not needed to enable
atheros header. This commit changed ar8216_setup_port so that it can
be reused for this switch.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
Atheros FE switches have a builtin mdio master available for PHY
accessing and on ar724x/ar933x builtin switches this mdio master
is the only way of accessing PHYs.
After this patch if there is phy_read/phy_write method available
in ar8xxx_chip we register a separated mdio bus for accessing PHYs.
Still adds support for mdio device probing only since this isn't
needed for those switches registered using PHY probing.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
ar8229 is the builtin switch in ar934x and later chips. There is
also a standalone version available and their registers/functions
are the same.
This commit added support for the builtin ar8229. The only thing
missing for standalone ar8229 should be phy modes. Since I don't
have a router using that, this commit doesn't add support for
other phy modes.
Only add its support for mdio-device probing method because the
current PHY probing can't return 1G speed when it's a FE switch.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
ar8xxx_id_chip is used to determine current ar8xxx_chip using switch
id and this isn't needed during mdiodev probing.
Move it out of ar8xxx_probe_switch so that we can skip it.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
for mdio-device probing we still need to read chip id but ar8xxx_chip
can be determined using drvdata. We can't distinguish the buggy
standalone ar8216 and the builtin ar8216 in ar724x/ar933x using chip
id.
Signed-off-by: Chuanhong Guo <gch981213@gmail.com>
We have IPQ8064 AP161 board which has three GMAC's
* RGMII x2
* SGMII x1.
The existing ar8327 driver does not have support for
three GMAC's connection, hence this change adds support
for the same. This has been verified on AP148 and AP161
board.
Signed-off-by: xiaofeis <xiaofeis@codeaurora.org>
Signed-off-by: Ram Chandra Jangir <rjangir@codeaurora.org>
Multicast ARL entries can have multiple destination ports. Get and dump
all destination ports of each entry, not just the lowest.
Signed-off-by: Günther Kelleter <guenther.kelleter@devolo.de>
Driver crash when 'phydev->adjust_link' isn't provided.
This patch check if 'phydev->adjust_link' exist before
call the method.
Signed-off-by: Pawel Dembicki <paweldembicki@gmail.com>
The implementation is not efficient on ar8xxx switches. It triggers high
CPU load and degrades device performance.
The high CPU load has been traced down to the ar8xxx_reg_wait() call in
ar8xxx_mib_op(), which has to usleep_range() till the MIB busy flag set
by the request to update the MIB counter is cleared.
This commit removes the get_port_stats() code introduced in 4d8a66d and
leaves a note for future hacker's beware.
Fixes: FS#1004
Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
This patch provides a generic switch_dev_ops 'get_port_stats()' callback by
taping into the relevant port MIB counters.
The implementation uses a generic callback that select the correct MIB counter
index based on chip version.
This callback is used by swconfig_leds led trigger to blink LEDs with port
network traffic.
Signed-off-by: Thibaut VARENE <hacks@slashdirt.org>
commit 33b72b8e0f
"ar8216: adjust ATU flushing in case of link changes"
introduced portwise flushing on link down events. Now the ARL table could
be in a chaotic state after boot where ar8xxx_sw_get_arl_table looped
forever (depending on the entries collected while booting).
Signed-off-by: Günther Kelleter <guenther.kelleter@devolo.de>
The priv->vlan_id member is of size AR8X16_MAX_VLANS, not AR8X16_MAX_PORTS,
so check for the proper maximum value in order to avoid capping valid VLAN IDs
to 7 (AR8X16_MAX_PORTS - 1).
Signed-off-by: Jo-Philipp Wich <jo@mein.io>
Imported from e1aaf7ec00%5E%21/#F0
Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>
CHROMIUM: net: ar8216: address security vulnerabilities in swconfig & ar8216
This patch does the following changes:
*address the security vulnerabilities in both swconfig framework and in
ar8216 driver (many bound check additions, and turned swconfig structure
signed element into unsigned when applicable)
*address a couple of whitespaces and indendation issues
BUG=chrome-os-partner:33096
TEST=none
Change-Id: I94ea78fcce8c1932cc584d1508c6e3b5dfb93ce9
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
Reviewed-on: https://chromium-review.googlesource.com/236490
Reviewed-by: Toshi Kikuchi <toshik@chromium.org>
Commit-Queue: Toshi Kikuchi <toshik@chromium.org>
Tested-by: Toshi Kikuchi <toshik@chromium.org>
Import from fd7b89dd46%5E%21/#F0
Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>
CHROMIUM: drivers: ar8216: prevent device duplication in ar8xxx_dev_list
If probe is called twice, once for PHY0 and a second time for PHY4,
the same switch device will be added twice to ar8xxx_dev_list, while
supposedly this list should have one element per hardware switch present
in the system.
While no negative impact have been observed, it does happen if a
platform instanciates these two PHYs from device-tree, as an example.
Change-Id: Iddcbdf7d4adacb0af01975b73f8e56b4582e894e
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
Reviewed-on: https://chromium-review.googlesource.com/234790
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Toshi Kikuchi <toshik@chromium.org>
Tested-by: Toshi Kikuchi <toshik@chromium.org>
Import from c3fd96a7b8%5E%21/#F0
Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>
CHROMIUM: drivers: ar8216: hold ar8xxx_dev_list_lock during use_count--
It is possible for the remove() callback to run twice in parallel, which
could result into --use_count returning only 1 in both cases and the
rest of the unregistration path to never be reached.
This case has never been observed in practice, but we will fix
preventively to make the code more robust.
BUG=chrome-os-partner:33096
TEST=none
Change-Id: If09abe27fdb2037f514f8674418bafaab3cbdef6
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
Reviewed-on: https://chromium-review.googlesource.com/232870
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Toshi Kikuchi <toshik@chromium.org>
Tested-by: Toshi Kikuchi <toshik@chromium.org>
Import from c05af20272
Signed-off-by: Pavel Kubelun <be.dissent@gmail.com>
CHROMIUM: drivers: ar8216: sync mib_work cancellation
ar8xxx_mib_stop() is called from ar8xxx_phy_remove(), so we want to make
sure the work doesn't run after priv is freed / the device ceases to
exist.
BUG=chrome-os-partner:33096
TEST=none
Change-Id: Iafb44ce93a87433adc4576e5fea5fda58d1f43a9
Signed-off-by: Mathieu Olivari <mathieu@codeaurora.org>
Reviewed-on: https://chromium-review.googlesource.com/232827
Reviewed-by: Matthias Kaehlcke <mka@chromium.org>
Reviewed-by: Toshi Kikuchi <toshik@chromium.org>
Reviewed-by: Grant Grundler <grundler@chromium.org>
Tested-by: Toshi Kikuchi <toshik@chromium.org>
The commit "generic: ar8216: add sanity check to ar8216_probe"
(774da6c7a4) stated that PHY IDs
should be checked at address 0-4. However, the PHY 4 was
never check by the loop. This patch extends the check to be
similar to the Atheors SDK. It tries all 4 ports and skips
unconnected PHYs if necessary. If it cannot find any familiar
PHYs, it will prevent the phy driver from initializing.
This patch is necessary for the C-60. It doesn't have a
PHY at port 3, so this caused the check in ar8xxx_is_possible
to fail. As a result, the ethernet ports on the C-60 didn't
work.
Signed-off-by: Christian Lamparter <chunkeey@gmail.com>
Combine all bus operations for one MMD access in one function.
Protecting all these bus operations with one lock also helps
to avoid potential issues due to bus operations intercepting
the register and data write.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 48914
The default TTL for address resolution table entries is 5 minutes
for all members of the AR8216 family. This can cause issues if
e.g. Wifi clients roam to another AP and their MAC appears on
another switch port suddenly. Then the client may not be reachable
until the old ARL entry expires.
I would have expected the switch to invalidate old entries if it
detects the same MAC on another port. But that's not the case.
Therefore make the TTL for ARL entries configurable.
The effective TTL will always be a multiple of 7 seconds.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 48913
The line before includes the port number anyway so there's no need
to duplicate the port number in the MIB info header.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 48912
The decimal values especially for TxByte and RxGoodByte are hard to read
once bigger amounts of data have been transferred.
Therefore complement the decimal values with info in GiB / MiB / KiB.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 48911
For unused switch ports all MIB values are zero. Displaying ~40 empty
MIB counters is just confusing and makes it hard to read the output of
swconfig dev <dev> show.
Therefore, if all MIB counters for a port are zero, just display
an info that the MIB counters are empty.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 48910
If a link goes down, don't flush the complete ARL table.
Only flush the entries for the respective port.
Don't touch ARL table if a link goes up.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 46381
Adds functions for flushing ARL table entries per port.
Successfully tested on AR8327. Implementation for AR8216/AR8236/AR8316
is based on the AR8236 datasheet and assumes that the three chips
share a common ATU register layout.
Compile-tested only for AR8216/AR8236/AR8316.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 46380
Adds the chip-specific part of reading ARL table for AR8216/AR8236/AR8316.
It's based on the AR8236 datasheet and compile-tested only as I couldn't
find datasheets for AR8216/AR8316 and don't own devices with these chips.
The existing ar8216_atu_flush implementation was used for all three
chip types, therefore I guess they share a common ATU register layout.
More testing would be appreciated.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 46379
Add global read-only swconfig attribute "arl_table" to display the
address resolution table.
So far the chip-specific part is implemented for AR8327/AR8337 only
as I don't have the datasheets for the other AR8XXX chips.
Successfully tested on TL-WDR4300 (AR8327rev2)
and TL-WDR4900 (AR8327rev4).
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 44104
Until a few years ago the page switch wait time was set to msleep(1)
what was changed to usleep_range(1000, 2000) later.
I can not imagine that a low-level operation like switching page
on register level takes so much time.
Most likely the value of 1ms was initially set to check whether
it fixes an issue and then remained w/o further checking whether
also a smaller value would be sufficient.
Now the wait time is set to 5us and I successfully tested this on
AR8327. IMHO 5us should be plenty of time for all supported chips.
However I couldn't test this due to missing hardware.
If other chips should need a longer wait time we can add the
wait time as a parameter to the ar8xxx_chip struct.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 44103
Check for switch port link changes and
- flush ATU in case of a change
- report link change via syslog
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 44102
The functionality to flush the address translation table contains two bugs
which luckily compensate each other.
1. Just setting the operation is not sufficient to perform the flushing.
The "active" bit needs to be set to actually trigger an action.
For the vtu operations this is implemented correctly.
2. ar8xxx_phy_read_status is called every 2s by the phy state machine
to check for link changes. This would have caused an ATU flush
every 2s.
Fix the chip-specific ATU flush functions and remove the ATU flush call
from ar8xxx_phy_read_status.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 44101
AR8327/AR8337 allow to read the result of EEE autonegotiation.
If EEE is autonegotiated between the link partners, display
this as part of the swconfig get_link attribute.
eee100: 100MBit EEE supported by both link partners
eee1000: 1GBit EEE supported by both link partners
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 44022
Users reported network issues with AR8327 which turned out to be caused
by EEE not working correctly with certain link partners (ticket 14597).
The workaround was to disable EEE on all ports (changeset 41577).
The issue was with certain link partners only, therefore this patch
allows to control usage of EEE per port via swconfig.
Still the default is to initially disable EEE on all ports.
Successfully tested on a TL-WDR4900 (AR8327 rev.4)
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
SVN-Revision: 44021
