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The mcp251xfd_chip_stop() function tries the best to stop the chip and
put it into sleep mode. It continues, even if some intermediate steps
fail. As none of the callers use the return value, let this function
return void.
Link: https://lore.kernel.org/all/20220207131047.282110-6-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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into sleep mode
This patch adds a new function to bring the chip into sleep mode, and
replaces several occurrences of open coded variants.
Link: https://lore.kernel.org/all/20220207131047.282110-5-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The mcp251xfd driver supports runtime PM enabled kernels, but also
works on !CONFIG_PM configurations.
This patch simplifies the runtime PM handling in the
mcp251xfd_unregister(). In the CONFIG_PM case, runtime PM has been
enabled in the mcp251xfd_probe() function, so we can disable it here.
For !CONFIG_PM builds call mcp251xfd_clks_and_vdd_disable() directly.
Link: https://lore.kernel.org/all/20220207131047.282110-4-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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OSC register is read
MCP251XFD_REG_OSC is the first register the driver reads from. The
chip may be in deep sleep and the SPI transfer (i.e. the assertion of
the CS) will wake the chip up. This takes about 3ms. The CRC of this
transfer is wrong, or there isn't any chip at all, in this case the
CRC will be wrong, too. The driver ignores the CRC error and returns
the read data to the caller.
To avoid any confusion, this patch changes the
mcp251xfd_regmap_crc_read() function to only ignore the CRC error if
solely the OSC register is read. So when reading more than the OSC
registers at once, CRC errors are not ignored.
Link: https://lore.kernel.org/all/20220207131047.282110-3-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This patch renames mcp251xfd_osc_invalid() to mcp251xfd_reg_invalid(),
as it will be used for other registers than the "osc" register in a
later patch.
This patch also moves this function to more towards the beginning of
the file, to be available for other functions, too.
Link: https://lore.kernel.org/all/20220207131047.282110-2-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The input to the GENMASK() macro was calculated by hand. Replaced it
with a dedicated macro: BITS_PER_TYPE() which does the exact same job.
Link: https://lore.kernel.org/all/20220212130737.3008-1-mailhol.vincent@wanadoo.fr
Signed-off-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Add check for NAPI poll function to avoid enabling interrupts
with out completing the NAPI call.
Link: https://lore.kernel.org/all/20220208162053.39896-1-srinivas.neeli@xilinx.com
Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Return value from softing_startstop() directly instead of taking this
in another redundant variable.
Link: https://lore.kernel.org/all/20220112080629.667191-1-chi.minghao@zte.com.cn
Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi <chi.minghao@zte.com.cn>
Signed-off-by: CGEL ZTE <cgel.zte@gmail.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The ethtool core implements a default drvinfo.
There's no need to replicate this in the driver, no additional
information is added, so remove this and rely on the default.
Link: https://lore.kernel.org/all/20220124215642.3474154-10-mkl@pengutronix.de
Cc: Dario Binacchi <dariobin@libero.it>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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The function usb_bulk_msg() can be called with a NULL pointer as the
"actual_length" parameter. This patch removes this variable.
Link: https://lore.kernel.org/all/20220124215642.3474154-9-mkl@pengutronix.de
Cc: Jimmy Assarsson <extja@kvaser.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This patch marks the arguments of some functions as well as some local
variables as constant.
Link: https://lore.kernel.org/all/20220124215642.3474154-7-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This patch simplifies the validation of the fixed bit rates. If a
supported bit rate is found, directly return 0.
If no valid bit rate is found return -EINVAL;
Link: https://lore.kernel.org/all/20220124215642.3474154-6-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Commit fb8696ab14ad ("can: gw: synchronize rcu operations
before removing gw job entry") added three synchronize_rcu() calls
to make sure one rcu grace period was observed before freeing
a "struct cgw_job" (which are tiny objects).
This should be converted to call_rcu() to avoid adding delays
in device / network dismantles.
Use the rcu_head that was already in struct cgw_job,
not yet used.
Link: https://lore.kernel.org/all/20220207190706.1499190-1-eric.dumazet@gmail.com
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Oliver Hartkopp <socketcan@hartkopp.net>
Tested-by: Oliver Hartkopp <socketcan@hartkopp.net>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Since commit
| 1f9234401ce0 ("dt-bindings: can: add can-controller.yaml")
there is a common CAN controller binding. Add this to the m_can
binding.
Link: https://lore.kernel.org/all/20220124220653.3477172-4-mkl@pengutronix.de
Reviewed-by: Chandrasekar Ramakrishnan <rcsekar@samsung.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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This patch fixes the indention of the table in the description of the
bosch,mram-cfg property.
Link: https://lore.kernel.org/all/20220217101111.2291151-1-mkl@pengutronix.de
Reviewed-by: Chandrasekar Ramakrishnan <rcsekar@samsung.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Since Sriram Dash's email bounces, change the maintainer entry to
Chandrasekar Ramakrishnan. Chandrasekar Ramakrishnan is already listed
as a maintainer in the MAINTAINERS file.
Link: https://lore.kernel.org/all/20220217113839.2311417-1-mkl@pengutronix.de
Cc: Chandrasekar Ramakrishnan <rcsekar@samsung.com>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Since commit
| 1f9234401ce0 ("dt-bindings: can: add can-controller.yaml")
there is a common CAN controller binding. Add this to the sun4i_can
binding.
Link: https://lore.kernel.org/all/20220124220653.3477172-3-mkl@pengutronix.de
Cc: Evgeny Boger <boger@wirenboard.com>
Cc: Gerhard Bertelsmann <info@gerhard-bertelsmann.de>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Since commit
| 1f9234401ce0 ("dt-bindings: can: add can-controller.yaml")
there is a common CAN controller binding. Add this to the mcp251xfd
binding.
Link: https://lore.kernel.org/all/20220124220653.3477172-2-mkl@pengutronix.de
Cc: Manivannan Sadhasivam <mani@kernel.org>
Cc: Thomas Kopp <thomas.kopp@microchip.com>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
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Subbaraya Sundeep says:
====================
Add ethtool support for completion queue event size
After a packet is sent or received by NIC then NIC posts
a completion queue event which consists of transmission status
(like send success or error) and received status(like
pointers to packet fragments). These completion events may
also use a ring similar to rx and tx rings. This patchset
introduces cqe-size ethtool parameter to modify the size
of the completion queue event if NIC hardware has that capability.
A bigger completion queue event can have more receive buffer pointers
inturn NIC can transfer a bigger frame from wire as long as
hardware(MAC) receive frame size limit is not exceeded.
Patch 1 adds support setting/getting cqe-size via
ethtool -G and ethtool -g.
Patch 2 includes octeontx2 driver changes to use
completion queue event size set from ethtool -G.
====================
Link: https://lore.kernel.org/r/1645555153-4932-1-git-send-email-sbhatta@marvell.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Completion Queue Entry(CQE) is a descriptor written
by hardware to notify software about the send and
receive completion status. The CQE can be of size
128 or 512 bytes. A 512 bytes CQE can hold more receive
fragments pointers compared to 128 bytes CQE. This
patch enables to modify CQE size using:
<ethtool -G cqe-size N>.
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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Add support to set completion queue event size via ethtool -G
parameter and get it via ethtool -g parameter.
~ # ./ethtool -G eth0 cqe-size 512
~ # ./ethtool -g eth0
Ring parameters for eth0:
Pre-set maximums:
RX: 1048576
RX Mini: n/a
RX Jumbo: n/a
TX: 1048576
Current hardware settings:
RX: 256
RX Mini: n/a
RX Jumbo: n/a
TX: 4096
RX Buf Len: 2048
CQE Size: 128
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5 fixes 2022-02-22
This series provides bug fixes to mlx5 driver.
Please pull and let me know if there is any problem.
* tag 'mlx5-fixes-2022-02-23' of git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linux:
net/mlx5e: Fix VF min/max rate parameters interchange mistake
net/mlx5e: Add missing increment of count
net/mlx5e: MPLSoUDP decap, fix check for unsupported matches
net/mlx5e: Fix MPLSoUDP encap to use MPLS action information
net/mlx5e: Add feature check for set fec counters
net/mlx5e: TC, Skip redundant ct clear actions
net/mlx5e: TC, Reject rules with forward and drop actions
net/mlx5e: TC, Reject rules with drop and modify hdr action
net/mlx5e: kTLS, Use CHECKSUM_UNNECESSARY for device-offloaded packets
net/mlx5e: Fix wrong return value on ioctl EEPROM query failure
net/mlx5: Fix possible deadlock on rule deletion
net/mlx5: Fix tc max supported prio for nic mode
net/mlx5: Fix wrong limitation of metadata match on ecpf
net/mlx5: Update log_max_qp value to be 17 at most
net/mlx5: DR, Fix the threshold that defines when pool sync is initiated
net/mlx5: DR, Don't allow match on IP w/o matching on full ethertype/ip_version
net/mlx5: DR, Fix slab-out-of-bounds in mlx5_cmd_dr_create_fte
net/mlx5: DR, Cache STE shadow memory
net/mlx5: Update the list of the PCI supported devices
====================
Link: https://lore.kernel.org/r/20220224001123.365265-1-saeed@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
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git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux
Pull devicetree fixes from Rob Herring:
- Update some maintainers email addresses
- Fix handling of elfcorehdr reservation for crash dump kernel
- Fix unittest expected warnings text
* tag 'devicetree-fixes-for-5.17-2' of git://git.kernel.org/pub/scm/linux/kernel/git/robh/linux:
dt-bindings: update Roger Quadros email
MAINTAINERS: sifive: drop Yash Shah
of/fdt: move elfcorehdr reservation early for crash dump kernel
of: unittest: update text of expected warnings
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git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux
Pull selinux fix from Paul Moore:
"A second small SELinux fix which addresses an incorrect
mutex_is_locked() check"
* tag 'selinux-pr-20220223' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/selinux:
selinux: fix misuse of mutex_is_locked()
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The VF min and max rate were passed incorrectly and resulted in wrongly
interchanging them. Fix the order of parameters in
mlx5_esw_qos_set_vport_rate().
Fixes: d7df09f5e7b4 ("net/mlx5: E-switch, Enable vport QoS on demand")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Aya Levin <ayal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Add mistakenly missing increment of count variable when looping over
output buffer in mlx5e_self_test().
This resolves the issue of garbage values output when querying with self
test via ethtool.
before:
$ ethtool -t eth2
The test result is PASS
The test extra info:
Link Test 0
Speed Test 1768697188
Health Test 758528120
Loopback Test 3288687
after:
$ ethtool -t eth2
The test result is PASS
The test extra info:
Link Test 0
Speed Test 0
Health Test 0
Loopback Test 0
Fixes: 7990b1b5e8bd ("net/mlx5e: loopback test is not supported in switchdev mode")
Signed-off-by: Lama Kayal <lkayal@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Currently offload of rule on bareudp device require tunnel key
in order to match on mpls fields and without it the mpls fields
are ignored, this is incorrect due to the fact udp tunnel doesn't
have key to match on.
Fix by returning error in case flow is matching on tunnel key.
Fixes: 72046a91d134 ("net/mlx5e: Allow to match on mpls parameters")
Signed-off-by: Maor Dickman <maord@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Currently the MPLSoUDP encap builds the MPLS header using encap action
information (tunnel id, ttl and tos) instead of the MPLS action
information (label, ttl, tc and bos) which is wrong.
Fix by storing the MPLS action information during the flow action
parse and later using it to create the encap MPLS header.
Fixes: f828ca6a2fb6 ("net/mlx5e: Add support for hw encapsulation of MPLS over UDP")
Signed-off-by: Maor Dickman <maord@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Fec counters support is checked via the PCAM feature_cap_mask,
bit 0: PPCNT_counter_group_Phy_statistical_counter_group.
Add feature check to avoid faulty behavior.
Fixes: 0a1498ebfa55 ("net/mlx5e: Expose FEC counters via ethtool")
Signed-off-by: Lama Kayal <lkayal@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Offload of ct clear action is just resetting the reg_c register.
It's done by allocating modify hdr resources which is limited.
Doing it multiple times is redundant and wasting modify hdr resources
and if resources depleted the driver will fail offloading the rule.
Ignore redundant ct clear actions after the first one.
Fixes: 806401c20a0f ("net/mlx5e: CT, Fix multiple allocations and memleak of mod acts")
Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Ariel Levkovich <lariel@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Such rules are redundant but allowed and passed to the driver.
The driver does not support offloading such rules so return an error.
Fixes: 03a9d11e6eeb ("net/mlx5e: Add TC drop and mirred/redirect action parsing for SRIOV offloads")
Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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This kind of action is not supported by firmware and generates a
syndrome.
kernel: mlx5_core 0000:08:00.0: mlx5_cmd_check:777:(pid 102063): SET_FLOW_TABLE_ENTRY(0x936) op_mod(0x0) failed, status bad parameter(0x3), syndrome (0x8708c3)
Fixes: d7e75a325cb2 ("net/mlx5e: Add offloading of E-Switch TC pedit (header re-write) actions")
Signed-off-by: Roi Dayan <roid@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Reviewed-by: Oz Shlomo <ozsh@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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For RX TLS device-offloaded packets, the HW spec guarantees checksum
validation for the offloaded packets, but does not define whether the
CQE.checksum field matches the original packet (ciphertext) or
the decrypted one (plaintext). This latitude allows architetctural
improvements between generations of chips, resulting in different decisions
regarding the value type of CQE.checksum.
Hence, for these packets, the device driver should not make use of this CQE
field. Here we block CHECKSUM_COMPLETE usage for RX TLS device-offloaded
packets, and use CHECKSUM_UNNECESSARY instead.
Value of the packet's tcp_hdr.csum is not modified by the HW, and it always
matches the original ciphertext.
Fixes: 1182f3659357 ("net/mlx5e: kTLS, Add kTLS RX HW offload support")
Signed-off-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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The ioctl EEPROM query wrongly returns success on read failures, fix
that by returning the appropriate error code.
Fixes: bb64143eee8c ("net/mlx5e: Add ethtool support for dump module EEPROM")
Signed-off-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Add missing call to up_write_ref_node() which releases the semaphore
in case the FTE doesn't have destinations, such in drop rule case.
Fixes: 465e7baab6d9 ("net/mlx5: Fix deletion of duplicate rules")
Signed-off-by: Maor Gottlieb <maorg@nvidia.com>
Reviewed-by: Mark Bloch <mbloch@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Only prio 1 is supported if firmware doesn't support ignore flow
level for nic mode. The offending commit removed the check wrongly.
Add it back.
Fixes: 9a99c8f1253a ("net/mlx5e: E-Switch, Offload all chain 0 priorities when modify header and forward action is not supported")
Signed-off-by: Chris Mi <cmi@nvidia.com>
Reviewed-by: Roi Dayan <roid@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Match metadata support check returns false for ecpf device.
However, this support does exist for ecpf and therefore this
limitation should be removed to allow feature such as stacked
devices and internal port offloaded to be supported.
Fixes: 92ab1eb392c6 ("net/mlx5: E-Switch, Enable vport metadata matching if firmware supports it")
Signed-off-by: Ariel Levkovich <lariel@nvidia.com>
Reviewed-by: Maor Dickman <maord@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Currently, log_max_qp value is dependent on what FW reports as its max capability.
In reality, due to a bug, some FWs report a value greater than 17, even though they
don't support log_max_qp > 17.
This FW issue led the driver to exhaust memory on startup.
Thus, log_max_qp value is set to be no more than 17 regardless
of what FW reports, as it was before the cited commit.
Fixes: f79a609ea6bf ("net/mlx5: Update log_max_qp value to FW max capability")
Signed-off-by: Maher Sanalla <msanalla@nvidia.com>
Reviewed-by: Avihai Horon <avihaih@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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When deciding whether to start syncing and actually free all the "hot"
ICM chunks, we need to consider the type of the ICM chunks that we're
dealing with. For instance, the amount of available ICM for MODIFY_ACTION
is significantly lower than the usual STE ICM, so the threshold should
account for that - otherwise we can deplete MODIFY_ACTION memory just by
creating and deleting the same modify header action in a continuous loop.
This patch replaces the hard-coded threshold with a dynamic value.
Fixes: 1c58651412bb ("net/mlx5: DR, ICM memory pools sync optimization")
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Currently SMFS allows adding rule with matching on src/dst IP w/o matching
on full ethertype or ip_version, which is not supported by HW.
This patch fixes this issue and adds the check as it is done in DMFS.
Fixes: 26d688e33f88 ("net/mlx5: DR, Add Steering entry (STE) utilities")
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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When adding a rule with 32 destinations, we hit the following out-of-band
access issue:
BUG: KASAN: slab-out-of-bounds in mlx5_cmd_dr_create_fte+0x18ee/0x1e70
This patch fixes the issue by both increasing the allocated buffers to
accommodate for the needed actions and by checking the number of actions
to prevent this issue when a rule with too many actions is provided.
Fixes: 1ffd498901c1 ("net/mlx5: DR, Increase supported num of actions to 32")
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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During rule insertion on each ICM memory chunk we also allocate shadow memory
used for management. This includes the hw_ste, dr_ste and miss list per entry.
Since the scale of these allocations is large we noticed a performance hiccup
that happens once malloc and free are stressed.
In extreme usecases when ~1M chunks are freed at once, it might take up to 40
seconds to complete this, up to the point the kernel sees this as self-detected
stall on CPU:
rcu: INFO: rcu_sched self-detected stall on CPU
To resolve this we will increase the reuse of shadow memory.
Doing this we see that a time in the aforementioned usecase dropped from ~40
seconds to ~8-10 seconds.
Fixes: 29cf8febd185 ("net/mlx5: DR, ICM pool memory allocator")
Signed-off-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Add the upcoming BlueField-4 and ConnectX-8 device IDs.
Fixes: 2e9d3e83ab82 ("net/mlx5: Update the list of the PCI supported devices")
Signed-off-by: Meir Lichtinger <meirl@nvidia.com>
Reviewed-by: Gal Pressman <gal@nvidia.com>
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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In case devlink reload action fw_activate failed in sync reset stage,
use the new MFRL field reset_state to find why it failed and share this
clarification with the user.
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Add new field reset_state to MFRL register. This field expose current
state of sync reset for fw update. This field enables sharing with the
user more details on why fw activate failed in case it failed the sync
reset stage.
Signed-off-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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DEVX can now use mlx5_cmd_do() which will not intercept the command
execution status and will provide full information of the return code.
DEVX can now propagate the error code safely to upper layers, to
indicate to the callers if the command was actually executed and the
error code indicates the command execution status availability in
the command outbox buffer.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Artemy Kovalyov <artemyko@mellanox.com>
Reviewed-by: Yishai Hadas <yishaih@mellanox.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Same as the new mlx5_cmd_do API, report all information to callers and
let them handle the error values and outbox parsing.
The user callback status "work->user_callback(status)" is now similar to
the error rc code returned from the blocking mlx5_cmd_do() version,
and now is defined as follows:
-EREMOTEIO : Command executed by FW, outbox.status != MLX5_CMD_STAT_OK.
Caller must check FW outbox status.
0 : Command execution successful, outbox.status == MLX5_CMD_STAT_OK.
< 0 : Command couldn't execute, FW or driver induced error.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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mlx5_core_create_{cq/dct} functions are non-trivial mlx5 commands
functions. They check command execution status themselves and hide
valuable FW failure information.
For mlx5_core/eth kernel user this is what we actually want, but for a
devx/rdma user the hidden information is essential and should be propagated
up to the caller, thus we convert these commands to use mlx5_cmd_do
to return the FW/driver and command outbox status as is, and let the caller
decide what to do with it.
For kernel callers of mlx5_core_create_{cq/dct} or those who only care about
the binary status (FAIL/SUCCESS) they must check status themselves via
mlx5_cmd_check() to restore the current behavior.
err = mlx5_create_cq(in, out)
err = mlx5_cmd_check(err, in, out)
if (err)
// handle err
For DEVX users and those who care about full visibility, They will just
propagate the error to user space, and app can check if err == -EREMOTEIO,
then outbox.{status,syndrome} are valid.
API Note:
mlx5_cmd_check() must be used by kernel users since it allows the driver
to intercept the command execution status and return a driver simulated
status in case of driver induced error handling or reset/recovery flows.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Add mlx5_cmd_do. Unlike mlx5_cmd_exec, this function will not modify
or translate outbox.status.
The function will return:
return = 0: Command was executed, outbox.status == MLX5_CMD_STAT_OK.
return = -EREMOTEIO: Executed, outbox.status != MLX5_CMD_STAT_OK.
return < 0: Command execution couldn't be performed by FW or driver.
And document other mlx5_cmd_exec functions.
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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Do not mangle the command outbox in the internal low level cmd_exec and
cmd_invoke functions.
Instead return a proper unique error code and move the driver error
checking to be at a higher level in mlx5_cmd_exec().
Signed-off-by: Saeed Mahameed <saeedm@mellanox.com>
Reviewed-by: Moshe Shemesh <moshe@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
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