Commit Graph

996830 Commits

Author SHA1 Message Date
Ryder Lee
2122dfbfd0 mt76: mt7615: add rx checksum offload support
Set skb->ip_summed to CHECKSUM_UNNECESSARY if the hardware has validated
the IP and TCP/UDP checksum

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12 00:01:21 +02:00
Ryder Lee
e78d73e01d mt76: mt7615: enable hw rx-amsdu de-aggregation
Enable hw rx-amsdu de-aggregation support.
This is a preliminary patch to enable rx checksum offload.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12 00:01:21 +02:00
Felix Fietkau
aa40528a5b mt76: use threaded NAPI
With threaded NAPI, the rx handler function is no longer bound to the CPU that
fired the interrupt, which significantly helps to spread the workload over
multiple CPUs, especially when multiple devices are using threaded NAPI at the
same time.
Exclude the tx handler from threaded NAPI by using a separate dummy netdev.
The work is small and short-lived enough that it makes more sense to run it in
softirq instead of creating a dedicated thread

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12 00:01:21 +02:00
Sean Wang
7139b5c0c9 mt76: connac: update sched_scan cmd usage
Update sched_scan command usage according to the current firmware
submitted into linux-firmware.git.

Fixes: 80fc1e37c0 ("mt76: mt7921: rely on mt76_connac_mcu module for sched_scan and hw_scan")
Co-developed-by: Soul Huang <Soul.Huang@mediatek.com>
Signed-off-by: Soul Huang <Soul.Huang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12 00:01:21 +02:00
Sean Wang
9dfd2785ac mt76: mt7921: add flush operation
add flush operation to make sure cfg80211_mlme_deauth is able to flush
the deauthtication frame into air immediately.

Co-developed-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: YN Chen <YN.Chen@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12 00:01:20 +02:00
Sean Wang
0940605a2a mt76: mt7921: fixup rx bitrate statistics
Since the related rx bitrate fields have been moved to group3 in Rxv,
fix rx bitrate statistics in mt7921_mac_fill_rx routine.

Fixes: 163f4d22c1 ("mt76: mt7921: add MAC support")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12 00:01:20 +02:00
Sean Wang
a7e3033fcd mt76: connac: fix up the setting for ht40 mode in mt76_connac_mcu_uni_add_bss
Use proper value for ht40 mode configuration in mt76_connac_mcu_uni_add_bss
routine and not ht20 one

Fixes: d0e274af2f ("mt76: mt76_connac: create mcu library")
Co-developed-by: Soul Huang <Soul.Huang@mediatek.com>
Signed-off-by: Soul Huang <Soul.Huang@mediatek.com>
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12 00:01:20 +02:00
Sean Wang
159f6dd619 mt76: mt7921: switch to new api for hardware beacon filter
Current firmware only supports new api for enabling hardware beacon filter.

Fixes: 1d8efc741d ("mt76: mt7921: introduce Runtime PM support")
Beacon filter cmd have to rely on the associatied access point's beacon
interval and DTIM information.

Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12 00:01:20 +02:00
Sean Wang
782b3e86ea mt76: mt7921: fix memory leak in mt7921_coredump_work
Fix possible memory leak in mt7921_coredump_work.

Fixes: 1c099ab447 ("mt76: mt7921: add MCU support")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12 00:01:20 +02:00
Sean Wang
5e30931494 mt76: mt7921: fix suspend/resume sequence
Any pcie access should happen in pci D0 state and we should give ownership
back to the device at the end of the suspend procedure.

Fixes: 1d8efc741d ("mt76: mt7921: introduce Runtime PM support")
Signed-off-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-12 00:01:20 +02:00
Ryder Lee
7715a1d54b mt76: use PCI_VENDOR_ID_MEDIATEK to avoid open coded
Use PCI standard defines.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Acked-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:39 +02:00
Lorenzo Bianconi
45f93e3682 mt76: mt7915: always check return value from mt7915_mcu_alloc_wtbl_req
As done for mt76_connac_mcu_alloc_wtbl_req, even if this is not a real
bug since mt7915_mcu_alloc_wtbl_req routine can fails just if nskb is NULL,
always check return value from mt7915_mcu_alloc_wtbl_req in order to avoid
possible future mistake.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:39 +02:00
Lorenzo Bianconi
baa3afb39e mt76: connac: always check return value from mt76_connac_mcu_alloc_wtbl_req
Even if this is not a real bug since mt76_connac_mcu_alloc_wtbl_req routine
can fails just if nskb is NULL , always check return value from
mt76_connac_mcu_alloc_wtbl_req in order to avoid possible future
mistake.

Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:38 +02:00
David Bauer
4b36cc6b39 mt76: mt76x0: disable GTK offloading
When operating two VAP on a MT7610 with encryption (PSK2, SAE, OWE),
only the first one to be created will transmit properly encrypteded
frames.

All subsequently created VAPs will sent out frames with the payload left
unencrypted, breaking multicast traffic (ICMP6 NDP) and potentially
disclosing information to a third party.

Disable GTK offloading and encrypt these frames in software to
circumvent this issue. THis only seems to be necessary on MT7610 chips,
as MT7612 is not affected from our testing.

Signed-off-by: David Bauer <mail@david-bauer.net>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:38 +02:00
Ryder Lee
be2a2872d0 mt76: always use WTBL_MAX_SIZE for tlv allocation
Simplify WTBL defines.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:38 +02:00
Lorenzo Bianconi
00ac71ff8d mt76: mt7921: removed unused definitions in mcu.h
Get rid of the following definitions in mt7921/mcu.h since they are not
actually used:
- MT7921_WTBL_UPDATE_MAX_SIZE
- MT7921_STA_UPDATE_MAX_SIZE
- MT7921_WTBL_UPDATE_BA_SIZE

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:38 +02:00
Nigel Christian
c2fa8edcca mt76: mt7921: remove unnecessary variable
In mt7921_pm_set() the variable "ret" is initialized to zero
and then returned. Remove it and return zero.

Signed-off-by: Nigel Christian <nigel.l.christian@gmail.com>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:38 +02:00
Lorenzo Bianconi
c1941b8902 mt76: mt7921: enable random mac addr during scanning
Notify mac80211 mt7921 devices support random mac address during hw
frequency scanning

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:38 +02:00
Sander Vanheule
858ebf446b mt76: mt7615: support loading EEPROM for MT7613BE
EEPROM blobs for MT7613BE radios start with (little endian) 0x7663,
which is also the PCI device ID for this device. The EEPROM is required
for the radio to work at useful power levels, otherwise only the lowest
power level is available.

Suggested-by: Georgi Vlaev <georgi.vlaev@konsulko.com>
Tested-by: Stijn Segers <foss@volatilesystems.org>
Signed-off-by: Sander Vanheule <sander@svanheule.net>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:38 +02:00
Felix Fietkau
7dcf3c04f0 mt76: mt7915: fix tx skb dma unmap
The first pointer in the txp needs to be unmapped as well, otherwise it will
leak DMA mapping entries

Reported-by: Ben Greear <greearb@candelatech.com>
Fixes: 27d5c528a7 ("mt76: fix double DMA unmap of the first buffer on 7615/7915")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:38 +02:00
Felix Fietkau
ebee7885bb mt76: mt7615: fix tx skb dma unmap
The first pointer in the txp needs to be unmapped as well, otherwise it will
leak DMA mapping entries

Fixes: 27d5c528a7 ("mt76: fix double DMA unmap of the first buffer on 7615/7915")
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:38 +02:00
Felix Fietkau
730d6d0da8 mt76: mt7615: fix key set/delete issues
There were multiple issues in the current key set/remove code:
- deleting a key with the previous key index deletes the current key
- BIP key would only be uploaded correctly initially and corrupted on rekey

Rework the code to better keep track of multiple keys and check for the
key index before deleting the current key

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:38 +02:00
Felix Fietkau
90e3abf07c mt76: mt7915: add support for rx decapsulation offload
For AP and Client mode, the hardware can pass received packets as 802.3 frames
that can be passed to the network stack as-is.

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:37 +02:00
Felix Fietkau
94244d2ea5 mt76: mt7915: add rx checksum offload support
Set skb->ip_summed to CHECKSUM_UNNECESSARY if the hardware has validated
the IP and TCP/UDP checksum

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:37 +02:00
Lorenzo Bianconi
cc4b3c139a mt76: mt7915: enable hw rx-amsdu de-aggregation
Enable hw rx-amsdu de-aggregation support available in 7915 devices.
This is a preliminary patch to enable rx checksum offload

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:37 +02:00
Felix Fietkau
e195dad141 mt76: add support for 802.3 rx frames
Do not try to access the header when receiving them

Signed-off-by: Felix Fietkau <nbd@nbd.name>
2021-04-11 18:50:37 +02:00
Arnd Bergmann
fa9f5d0e0b iwlegacy: avoid -Wempty-body warning
There are a couple of warnings in this driver when building with W=1:

drivers/net/wireless/intel/iwlegacy/common.c: In function 'il_power_set_mode':
drivers/net/wireless/intel/iwlegacy/common.c:1195:60: error: suggest braces around empty body in an 'if' statement [-Werror=empty-body]
 1195 |                                 il->chain_noise_data.state);
      |                                                            ^
drivers/net/wireless/intel/iwlegacy/common.c: In function 'il_do_scan_abort':
drivers/net/wireless/intel/iwlegacy/common.c:1343:57: error: suggest braces around empty body in an 'else' statement [-Werror=empty-body]

Change the empty debug macros to no_printk(), which avoids the
warnings and adds useful format string checks.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210322104343.948660-3-arnd@kernel.org
2021-04-11 12:31:01 +03:00
Lorenzo Bianconi
670d9e5388 mt7601u: enable TDLS support
Notify mac80211 the mt7601u chipset support 802.11 TDLS. The feature has
been tested with a mt7610u peer.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/8f9fd662cdbbb70ba896f1bea80e696b15011d3f.1614536496.git.lorenzo@kernel.org
2021-04-11 12:30:20 +03:00
Colin Ian King
87fce88658 mt7601u: fix always true expression
Currently the expression ~nic_conf1 is always true because nic_conf1
is a u16 and according to 6.5.3.3 of the C standard the ~ operator
promotes the u16 to an integer before flipping all the bits. Thus
the top 16 bits of the integer result are all set so the expression
is always true.  If the intention was to flip all the bits of nic_conf1
then casting the integer result back to a u16 is a suitabel fix.

Interestingly static analyzers seem to thing a bitwise ! should be
used instead of ~ for this scenario, so I think the original intent
of the expression may need some extra consideration.

Addresses-Coverity: ("Logical vs. bitwise operator")
Fixes: c869f77d6a ("add mt7601u driver")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Acked-by: Jakub Kicinski <kubakici@wp.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210225183241.1002129-1-colin.king@canonical.com
2021-04-11 12:29:47 +03:00
Dan Carpenter
c9eaee0c2e rtw88: Fix an error code in rtw_debugfs_set_rsvd_page()
The sscanf() function returns the number of matches (0 or 1 in this
case).  It doesn't return error codes.  We should return -EINVAL if the
string is invalid

Fixes: c376c1fc87 ("rtw88: add h2c command in debugfs")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/YE8nmatMDBDDWkjq@mwanda
2021-04-11 12:29:06 +03:00
Ching-Te Ku
4517f81125 rtw88: coex: fix A2DP stutters while WL busy + WL scan
While WL scan, WL is more high priority than BT. The packets from AP
will be a big interference to A2DP. It will lead to A2DP stutters. Stop
answering CTS to AP to decrease AP's packets Tx while WL scan + WL busy.
Enable BT AFH feature to make BT leave away from WL channel.

Desired BT firmware BT-COEX version: 0x1c
Desired WL firmware version: 9.9.x

Signed-off-by: Ching-Te Ku <ku920601@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210319054218.3319-8-pkshih@realtek.com
2021-04-11 12:27:58 +03:00
Po-Hao Huang
7ae7784ec2 rtw88: 8822c: add LC calibration for RTL8822C
Fix power tracking issue by replacing unnecessary IQ calibration
with LC calibration.
When thermal difference exceeds limitation, let RF circuit adjsut
its characteristic to fit in current environment.

Signed-off-by: Po-Hao Huang <phhuang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210319054218.3319-6-pkshih@realtek.com
2021-04-11 12:26:49 +03:00
Zong-Zhe Yang
a08398833e rtw88: 8822c: update tx power limit table to RF v40.1
update tx power limits to RF v40 and apply fix on FCC's channel 12 and 13,
so change the patch level to 1.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210319054218.3319-5-pkshih@realtek.com
2021-04-11 12:25:19 +03:00
Zong-Zhe Yang
76325506e8 rtw88: fix DIG min setting
DIG min is expected to be set according to chip. And actually we assigned
it under each chip information. However, we didn't use the setting when we
did DIG process. It is unexpected, so we fix it.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210319054218.3319-4-pkshih@realtek.com
2021-04-11 12:24:33 +03:00
Zong-Zhe Yang
7b33ec8b93 rtw88: add flush hci support
Though mac queue flushing has been supported, sometimes data may be waiting
on interface from host to chip. If it occurs, there may still be data that
flows into mac just after we do flush. To avoid that, we add the hci part
of flushing.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210319054218.3319-2-pkshih@realtek.com
2021-04-11 12:24:31 +03:00
Zong-Zhe Yang
13ce240a93 rtw88: 8822c: support FW crash dump when FW crash
Although FW crash logs are already supported for dumping in driver, the
logs may not be sufficient to analyze field issues. To improve this part,
we add a support to dump FW memory.

When driver receives FW crash notifications, driver uses DDMA, which is a
HW ability, to copy specified FW memory to FW fifo. Driver can then dump
these information from FW fifo. With this support, not only FW crash log
but also specified FW memory will be dumped while FW crash. Besides,
specified registers are also dumped.

This feature is implemeted on 8822C first due to difference of FW layouts
between ICs. In addition, we add a debugfs to trigger FW crash. It can
simulate the process of crash, dump and reset. Through it, we can also
check if a reset is ongoing.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210309060121.9099-1-pkshih@realtek.com
2021-03-15 10:27:13 +02:00
Ajay Singh
5077369630 wilc1000: use wilc handler as cookie in request_threaded_irq()
Use same cookie for request_threaded_irq() & free_irq() to properly free
IRQ during module unload. free_irq() already uses *wilc* handler so the
changes are required for request_threaded_irq().

Signed-off-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210225042302.17048-1-ajay.kathat@microchip.com
2021-03-15 10:26:28 +02:00
Marcus Folkesson
e21b6e5a54 wilc1000: write value to WILC_INTR2_ENABLE register
Write the value instead of reading it twice.

Fixes: c5c77ba18e ("staging: wilc1000: Add SDIO/SPI 802.11 driver")
Signed-off-by: Marcus Folkesson <marcus.folkesson@gmail.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210224163706.519658-1-marcus.folkesson@gmail.com
2021-03-15 10:25:16 +02:00
David Mosberger-Tang
f135a1571a wilc1000: Support chip sleep over SPI
chip_allow_sleep() only supported wakeup via SDIO, which made the
driver unusable over SPI.  This code is a straight forward port from
the driver in the linux-at91 repository.

Signed-off-by: David Mosberger-Tang <davidm@egauge.net>
Acked-by: Ajay Singh <ajay.kathat@microchip.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210224033317.1507603-1-davidm@egauge.net
2021-03-15 10:23:53 +02:00
wengjianfeng
4a7ea94377 rtw88: remove unnecessary variable
The variable ret is defined at the beginning and initialized
to 0 until the function returns ret, and the variable ret is
not reassigned.Therefore, we do not need to define the variable
ret, just return 0 directly at the end of the function.

Signed-off-by: wengjianfeng <wengjianfeng@yulong.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210223075438.13676-1-samirweng1979@163.com
2021-03-15 10:23:11 +02:00
Ping-Ke Shih
5b492c7dbd rtw88: coex: add power off setting
Clear WL/BT on/off bit in scoreboard register that is used to exchange
WL/BT status. Since the status is preserved after warm reboot, we must
clear it when WL is going to down.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210219054140.7835-1-pkshih@realtek.com
2021-03-15 10:22:22 +02:00
Kalle Valo
1193a7de6e Merge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
ath.git patches for v5.13. Major changes:

ath11k

* add initial support for QCN9074, but not enabled yet due to firmware problems

* enable radar detection for 160MHz secondary segment

* handle beacon misses in station mode
2021-03-15 10:12:41 +02:00
David S. Miller
2117fce81f Merge branch 'psample-Add-additional-metadata-attributes'
Ido Schimmel says:

====================
psample: Add additional metadata attributes

This series extends the psample module to expose additional metadata to
user space for packets sampled via act_sample. The new metadata (e.g.,
transit delay) can then be consumed by applications such as hsflowd [1]
for better network observability.

netdevsim is extended with a dummy psample implementation that
periodically reports "sampled" packets to the psample module. In
addition to testing of the psample module, it enables the development
and demonstration of user space applications (e.g., hsflowd) that are
interested in the new metadata even without access to specialized
hardware (e.g., Spectrum ASIC) that can provide it.

mlxsw is also extended to provide the new metadata to psample.

A Wireshark dissector for psample netlink packets [2] will be submitted
upstream after the kernel patches are accepted. In addition, a libpcap
capture module for psample is currently in the works. Eventually, users
should be able to run:

 # tshark -i psample

In order to consume sampled packets along with their metadata.

Series overview:

Patch #1 makes it easier to extend the metadata provided to psample

Patch #2 adds the new metadata attributes to psample

Patch #3 extends netdevsim to periodically report "sampled" packets to
psample. Various debugfs knobs are added to control the reporting

Patch #4 adds a selftest over netdevsim

Patches #5-#10 gradually add support for the new metadata in mlxsw

Patch #11 adds a selftest over mlxsw

[1] https://sflow.org/draft4_sflow_transit.txt
[2] 3d71114302
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-14 15:00:44 -07:00
Ido Schimmel
bb24d592e6 selftests: mlxsw: Add tc sample tests
Test that packets are sampled when tc-sample is used and that reported
metadata is correct. Two sets of hosts (with and without LAG) are used,
since metadata extraction in mlxsw is a bit different when LAG is
involved.

 # ./tc_sample.sh
 TEST: tc sample rate (forward)                                      [ OK ]
 TEST: tc sample rate (local receive)                                [ OK ]
 TEST: tc sample maximum rate                                        [ OK ]
 TEST: tc sample group conflict test                                 [ OK ]
 TEST: tc sample iif                                                 [ OK ]
 TEST: tc sample lag iif                                             [ OK ]
 TEST: tc sample oif                                                 [ OK ]
 TEST: tc sample lag oif                                             [ OK ]
 TEST: tc sample out-tc                                              [ OK ]
 TEST: tc sample out-tc-occ                                          [ OK ]

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-14 15:00:44 -07:00
Ido Schimmel
2073c60044 mlxsw: spectrum: Report extra metadata to psample module
Make use of the previously added metadata and report it to the psample
module. The metadata is read from the skb's control block, which was
initialized by the bus driver (i.e., 'mlxsw_pci') after decoding the
packet's Completion Queue Element (CQE).

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-14 15:00:44 -07:00
Ido Schimmel
48990bef1e mlxsw: spectrum: Remove mlxsw_sp_sample_receive()
The function resolves the psample sampling group from the Rx port
because this is the only form of sampling the driver currently supports.
Subsequent patches are going to add support for Tx-based and
policy-based sampling, in which case the sampling group would not be
resolved from the Rx port.

Therefore, move this code to the Rx-specific sampling listener.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-14 15:00:44 -07:00
Ido Schimmel
e1f78ecdfd mlxsw: spectrum: Remove unnecessary RCU read-side critical section
Since commit 7d8e8f3433 ("mlxsw: core: Increase scope of RCU read-side
critical section"), all Rx handlers are called from an RCU read-side
critical section.

Remove the unnecessary rcu_read_lock() / rcu_read_unlock().

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-14 15:00:44 -07:00
Ido Schimmel
5ab6dc9fa2 mlxsw: pci: Set extra metadata in skb control block
Packets that are mirrored / sampled to the CPU have extra metadata
encoded in their corresponding Completion Queue Element (CQE). Retrieve
this metadata from the CQE and set it in the skb control block so that
it could be accessed by the switch driver (i.e., 'mlxsw_spectrum').

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-14 15:00:43 -07:00
Ido Schimmel
d4cabaadea mlxsw: Create dedicated field for Rx metadata in skb control block
Next patch will need to encode more Rx metadata in the skb control
block, so create a dedicated field for it and move the cookie index
there.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-14 15:00:43 -07:00
Ido Schimmel
e0eeede3d2 mlxsw: pci: Add more metadata fields to CQEv2
The Completion Queue Element version 2 (CQEv2) includes various metadata
fields for packets that are mirrored / sampled to the CPU.

Add these fields so that they could be used by a later patch.

Signed-off-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2021-03-14 15:00:43 -07:00