Use convenient lists to manage SDIO packets, adjust
'struct if_sdio_packet', 'struct if_sdio_card' and
related code accordingly.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230725060531.72968-2-dmantipov@yandex.ru
Add missing 'cancel_work_sync()' in 'if_sdio_remove()'
and on error handling path in 'if_sdio_probe()'.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Tested-by: Dan Williams <dcbw@redhat.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230725060531.72968-1-dmantipov@yandex.ru
The DT of_device.h and of_platform.h date back to the separate
of_platform_bus_type before it as merged into the regular platform bus.
As part of that merge prepping Arm DT support 13 years ago, they
"temporarily" include each other. They also include platform_device.h
and of.h. As a result, there's a pretty much random mix of those include
files used throughout the tree. In order to detangle these headers and
replace the implicit includes with struct declarations, users need to
explicitly include the correct includes.
Signed-off-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230724211914.805876-1-robh@kernel.org
In some situations like, chip wake-up with powersave enabled, SPI
commands are failing temporarily. Reissuing commands after reset helps
to overcome the failure. So, add the retry limit and reset command
sequence API for read/write SPI commands.
Signed-off-by: Amisha Patel <amisha.patel@microchip.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230724163955.4583-1-amisha.patel@microchip.com
Make sure mwifiex_process_mgmt_packet,
mwifiex_process_sta_rx_packet and mwifiex_process_uap_rx_packet,
mwifiex_uap_queue_bridged_pkt and mwifiex_process_rx_packet
not out-of-bounds access the skb->data buffer.
Fixes: 2dbaf751b1 ("mwifiex: report received management frames to cfg80211")
Signed-off-by: Polaris Pi <pinkperfect2021@gmail.com>
Reviewed-by: Matthew Wang <matthewmwang@chromium.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230723070741.1544662-1-pinkperfect2021@gmail.com
The 'enhance throughput flow' algorithm is used by default. So older
sections of the code are removed so as to always use this new algorithm.
Signed-off-by: Prasurjya Rohan Saikia <prasurjya.rohansaikia@microchip.com>
Acked-by: Ajay Kathat <ajay.kathat@microchip.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230710094401.235222-1-prasurjya.rohansaikia@microchip.com
The data rate from RX descriptor also uses hardware rate v1 for WiFi 7
chips. The rate code contains three parts -- mode, NSS and MCS. For
CCK/OFDM/HT rates, NSS/MCS parts are the same as before. VHT/HE/EHT rates
are changed and listed as below:
mode NSS MCS
V0 [8:7] [6:4] [3:0]
V1 [10:8] [7:5] [4:0]
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230728070252.66525-11-pkshih@realtek.com
WiFi 7 chips have more rate mode (EHT), higher MCS and more bandwidth, so
define and use reserved bits to carry these information in C2H events.
Also, the SS/MCS encoded bits of VHT and HE are changed, so define V1 masks
for them.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230728070252.66525-9-pkshih@realtek.com
RA (rate adaptive), a mechanism to select proper rate, is implemented in
firmware, and this report is used to tell driver TX rate it is currently
using. Use struct to access this report, and doesn't change logic at all.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230728070252.66525-8-pkshih@realtek.com
Firmware C2H events contain two-word header which can indicate category,
class, function and length of received events. Use struct to access them,
and doesn't change logic at all.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230728070252.66525-7-pkshih@realtek.com
H2C RA V1 command adds two words to support WiFi 7 chips, which can
possibly support up to 4SS rates. Because current chips have only 2SS
rates, leave the fields blank for now. The main changes are to set
extended bits of EHT mode and bandwidth -- add a bit for EHT mode; add a
bit to enumerate 320MHz channel bandwidth.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230728070252.66525-6-pkshih@realtek.com
RA (rate adaptive) H2C command is used to tell firmware which rates can
be used for specified MAC ID. Basically, this commit doesn't change result.
Only change to set two 32-bit instead of continual 8-byte rate masks one
by one. Originally, we only set 5-byte masks, because existing WiFi 6
2SS chips only need 5-byte masks. Setting two 32-bit masks will be more
efficient and also can support coming WiFi 7 2SS chips containing more
rates.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230728070252.66525-5-pkshih@realtek.com
Rate pattern is controlled by 'iw bitrates' to fix rate as desired, and
we extend to support v1 rate.
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@kernel.org>
Link: https://lore.kernel.org/r/20230728070252.66525-4-pkshih@realtek.com
To support EHT rate, hardware rate v1 is introduced. The CCK and OFDM rates
are persistent. HT/VHT/HE rates use different rate code from original, and
add new code for EHT rates.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230728070252.66525-3-pkshih@realtek.com
The coming WiFi 7 chip is 8922AE which uses different hardware rate and
register naming rule. Adding a chip_info::chip_gen field can help to
do things by generations accordingly.
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230728070252.66525-2-pkshih@realtek.com
When using compressed firmware, the early firmware load feature will fail.
In most cases, the only downside is that if a device has more than one
firmware version available, only the last one listed will be loaded.
In at least two cases, there is no firmware loaded, and the device fails
initialization. See https://github.com/lwfinger/rtw89/issues/259 and
https://bugzilla.opensuse.org/show_bug.cgi?id=1212808 for examples of
the failure.
When firmware_class.dyndbg=+p" added to the kernel boot parameters, the
following is found:
finger@localhost:~/rtw89>sudo dmesg -t | grep rtw89
firmware_class: __allocate_fw_priv: fw-rtw89/rtw8852b_fw-1.bin fw_priv=00000000638862fb
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/5.14.21-150500.53-default/rtw89/rtw8852b_fw-1.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/rtw89/rtw8852b_fw-1.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/5.14.21-150500.53-default/rtw89/rtw8852b_fw-1.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/rtw89/rtw8852b_fw-1.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: Direct firmware load for rtw89/rtw8852b_fw-1.bin failed with error -2
firmware_class: __free_fw_priv: fw-rtw89/rtw8852b_fw-1.bin fw_priv=00000000638862fb data=00000000307c30c7 size=0
firmware_class: __allocate_fw_priv: fw-rtw89/rtw8852b_fw.bin fw_priv=00000000638862fb
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/5.14.21-150500.53-default/rtw89/rtw8852b_fw.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/rtw89/rtw8852b_fw.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/5.14.21-150500.53-default/rtw89/rtw8852b_fw.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/rtw89/rtw8852b_fw.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: Direct firmware load for rtw89/rtw8852b_fw.bin failed with error -2
firmware_class: __free_fw_priv: fw-rtw89/rtw8852b_fw.bin fw_priv=00000000638862fb data=00000000307c30c7 size=0
rtw89_8852be 0000:02:00.0: failed to early request firmware: -2
firmware_class: __allocate_fw_priv: fw-rtw89/rtw8852b_fw.bin fw_priv=00000000638862fb
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/5.14.21-150500.53-default/rtw89/rtw8852b_fw.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/rtw89/rtw8852b_fw.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/5.14.21-150500.53-default/rtw89/rtw8852b_fw.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/rtw89/rtw8852b_fw.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/5.14.21-150500.53-default/rtw89/rtw8852b_fw.bin.xz failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/rtw89/rtw8852b_fw.bin.xz failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/5.14.21-150500.53-default/rtw89/rtw8852b_fw.bin.xz failed for no such file or directory.
rtw89_8852be 0000:02:00.0: Loading firmware from /lib/firmware/rtw89/rtw8852b_fw.bin.xz
rtw89_8852be 0000:02:00.0: f/w decompressing rtw89/rtw8852b_fw.bin
firmware_class: fw_set_page_data: fw-rtw89/rtw8852b_fw.bin fw_priv=00000000638862fb data=000000004ed6c2f7 size=1035232
rtw89_8852be 0000:02:00.0: Firmware version 0.27.32.1, cmd version 0, type 1
rtw89_8852be 0000:02:00.0: Firmware version 0.27.32.1, cmd version 0, type 3
The key is that firmware version 0.27.32.1 is loaded.
With this patch, the following is obtained:
firmware_class: __free_fw_priv: fw-rtw89/rtw8852b_fw.bin fw_priv=000000000849addc data=00000000fd3cabe2 size=1035232
firmware_class: fw_name_devm_release: fw_name-rtw89/rtw8852b_fw.bin devm-000000002d8c3343 released
firmware_class: __allocate_fw_priv: fw-rtw89/rtw8852b_fw-1.bin fw_priv=000000009e1a6364
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/6.4.3-1-default/rtw89/rtw8852b_fw-1.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/rtw89/rtw8852b_fw-1.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/6.4.3-1-default/rtw89/rtw8852b_fw-1.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/rtw89/rtw8852b_fw-1.bin failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/6.4.3-1-default/rtw89/rtw8852b_fw-1.bin.zst failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/rtw89/rtw8852b_fw-1.bin.zst failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/6.4.3-1-default/rtw89/rtw8852b_fw-1.bin.zst failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/rtw89/rtw8852b_fw-1.bin.zst failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/6.4.3-1-default/rtw89/rtw8852b_fw-1.bin.xz failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/updates/rtw89/rtw8852b_fw-1.bin.xz failed for no such file or directory.
rtw89_8852be 0000:02:00.0: loading /lib/firmware/6.4.3-1-default/rtw89/rtw8852b_fw-1.bin.xz failed for no such file or directory.
rtw89_8852be 0000:02:00.0: Loading firmware from /lib/firmware/rtw89/rtw8852b_fw-1.bin.xz
rtw89_8852be 0000:02:00.0: f/w decompressing rtw89/rtw8852b_fw-1.bin
firmware_class: fw_set_page_data: fw-rtw89/rtw8852b_fw-1.bin fw_priv=000000009e1a6364 data=00000000fd3cabe2 size=1184992
rtw89_8852be 0000:02:00.0: Loaded FW: rtw89/rtw8852b_fw-1.bin, sha256: 8539efc75f513f4585cf0cd6e79e6507da47fce87225f2d0de391a03aefe9ac8
rtw89_8852be 0000:02:00.0: loaded firmware rtw89/rtw8852b_fw-1.bin
rtw89_8852be 0000:02:00.0: Firmware version 0.29.29.1, cmd version 0, type 5
rtw89_8852be 0000:02:00.0: Firmware version 0.29.29.1, cmd version 0, type 3
Now, version 0.29.29.1 is loaded.
Fixes: ffde7f3476 ("wifi: rtw89: add firmware format version to backward compatible with older drivers")
Cc: Ping-Ke Shih <pkshih@realtek.com>
Cc: Takashi Iwai <tiwai@suse.de>
Signed-off-by: Larry Finger <Larry.Finger@lwfinger.net>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230724183927.28553-1-Larry.Finger@lwfinger.net
Allow moving the wiphy device for mwififex to a non-inital network
namespace. Many wireless drivers enable this flag implicitly by
initializing through the generic ieee80211_alloc_hw_nm function. As
mwifiex does not utilize this function WIPHY_FLAG_NETNS_OK must be set
explicitly.
Moving to network namespace and working connection tested using
wpa_supplicant from a network namespace as well as from a container on
GyroidOS. The hardware was the Toradex Apalis i.MX8QM Board using the
Azurewave AW-CM276NF wireless module.
Signed-off-by: Johannes Wiesboeck <johannes.wiesboeck@aisec.fraunhofer.de>
Reviewed-by: Michael Weiß <michael.weiss@aisec.fraunhofer.de>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230706093437.3380526-1-johannes.wiesboeck@aisec.fraunhofer.de
When compiling with gcc 13.1 and CONFIG_FORTIFY_SOURCE=y,
I've noticed the following:
In function ‘fortify_memcpy_chk’,
inlined from ‘mwifiex_construct_tdls_action_frame’ at drivers/net/wireless/marvell/mwifiex/tdls.c:765:3,
inlined from ‘mwifiex_send_tdls_action_frame’ at drivers/net/wireless/marvell/mwifiex/tdls.c:856:6:
./include/linux/fortify-string.h:529:25: warning: call to ‘__read_overflow2_field’
declared with attribute warning: detected read beyond size of field (2nd parameter);
maybe use struct_group()? [-Wattribute-warning]
529 | __read_overflow2_field(q_size_field, size);
| ^~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
The compiler actually complains on:
memmove(pos + ETH_ALEN, &mgmt->u.action.category,
sizeof(mgmt->u.action.u.tdls_discover_resp));
and it happens because the fortification logic interprets this
as an attempt to overread 1-byte 'u.action.category' member of
'struct ieee80211_mgmt'. To silence this warning, it's enough
to pass an address of 'u.action' itself instead of an address
of its first member.
This also fixes an improper usage of 'sizeof()'. Since 'skb' is
extended with 'sizeof(mgmt->u.action.u.tdls_discover_resp) + 1'
bytes (where 1 is actually 'sizeof(mgmt->u.action.category)'),
I assume that the same number of bytes should be copied.
Suggested-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230629085115.180499-2-dmantipov@yandex.ru
Prefer 'strscpy()' over 'strlcpy()' in 'mwifiex_init_hw_fw()'.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230629085115.180499-1-dmantipov@yandex.ru
Theoretically this chip can handle 127 clients.
Only compile tested but it should work as well as the RTL8188FU.
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/b2876c56-0ea7-c398-5c9b-635f9f894f2c@gmail.com
Theoretically this chip can handle 127 clients.
Tested only very briefly but it should work as well as the RTL8188FU.
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/56c9b186-ba9a-8469-652d-ce1709813e9e@gmail.com
Theoretically this chip can handle 15 clients.
Tested only very briefly but it should work as well as the RTL8188FU.
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/ce04a0a1-df72-ea30-f742-8834e01457f5@gmail.com
Theoretically this chip can handle 127 clients.
Tested only very briefly but it should work as well as the RTL8188FU.
Signed-off-by: Bitterblue Smith <rtl8821cerfe2@gmail.com>
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/ffcabba5-7e9e-674c-ad03-73646b040b96@gmail.com
If there is a failure during kstrtobool_from_user()
rtw89_debug_priv_btc_manual_set should return a negative error code
instead of returning the count directly.
Fix this bug by returning an error code instead of a count after
a failed call of the function "kstrtobool_from_user". Moreover
I omitted the label "out" with this source code correction.
Fixes: e3ec7017f6 ("rtw89: add Realtek 802.11ax driver")
Signed-off-by: Zhang Shurong <zhang_shurong@foxmail.com>
Acked-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/tencent_1C09B99BD7DA9CAD18B00C8F0F050F540607@qq.com
Since all iterators called by 'rtw_iterate_vifs()' never uses
'mac' argument, it may be omitted, and 'struct rtw_vifs_entry'
may be simplified accordingly.
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230628072327.167196-4-dmantipov@yandex.ru
Drop no longer used 'bulkout_size' of 'struct rtw_usb' as well
as related macros from usb.h and leftovers in 'rtw_usb_parse()'.
This follows commit 462c8db6a0 ("wifi: rtw88: usb: drop
now unnecessary URB size check").
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Reviewed-by: Sascha Hauer <s.hauer@pengutronix.de>
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230628072327.167196-3-dmantipov@yandex.ru
Drop unused and set but unused 'last_push' of 'struct rtw_txq',
'wireless_set' of 'struct rtw_sta_info', 'usb_txagg_num' of
'struct rtw_usb' and 'n' of 'struct rx_usb_ctrl_block', unused
definition of 'struct rtw_timer_list', adjust related code.
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230628072327.167196-2-dmantipov@yandex.ru
Fix possible crash and memory leak on driver unload by deleting
TX purge timer and freeing C2H queue in 'rtw_core_deinit()',
shrink critical section in the latter by freeing COEX queue
out of TX report lock scope.
Reviewed-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Dmitry Antipov <dmantipov@yandex.ru>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20230628072327.167196-1-dmantipov@yandex.ru
IPv6 inet sockets are supposed to have a "struct ipv6_pinfo"
field at the end of their definition, so that inet6_sk_generic()
can derive from socket size the offset of the "struct ipv6_pinfo".
This is very fragile, and prevents adding bigger alignment
in sockets, because inet6_sk_generic() does not work
if the compiler adds padding after the ipv6_pinfo component.
We are currently working on a patch series to reorganize
TCP structures for better data locality and found issues
similar to the one fixed in commit f5d547676c
("tcp: fix tcp_inet6_sk() for 32bit kernels")
Alternative would be to force an alignment on "struct ipv6_pinfo",
greater or equal to __alignof__(any ipv6 sock) to ensure there is
no padding. This does not look great.
v2: fix typo in mptcp_proto_v6_init() (Paolo)
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Chao Wu <wwchao@google.com>
Cc: Wei Wang <weiwan@google.com>
Cc: Coco Li <lixiaoyan@google.com>
Cc: YiFei Zhu <zhuyifei@google.com>
Reviewed-by: Simon Horman <simon.horman@corigine.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This change adds a new sysctl accept_ra_min_rtr_lft to specify the
minimum acceptable router lifetime in an RA. If the received RA router
lifetime is less than the configured value (and not 0), the RA is
ignored.
This is useful for mobile devices, whose battery life can be impacted
by networks that configure RAs with a short lifetime. On such networks,
the device should never gain IPv6 provisioning and should attempt to
drop RAs via hardware offload, if available.
Signed-off-by: Patrick Rohr <prohr@google.com>
Cc: Maciej Żenczykowski <maze@google.com>
Cc: Lorenzo Colitti <lorenzo@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
`strncpy` is deprecated for use on NUL-terminated destination strings [1].
Even call sites utilizing length-bounded destination buffers should
switch over to using `strtomem` or `strtomem_pad`. In this case,
however, the compiler is unable to determine the size of the `data`
buffer which renders `strtomem` unusable. Due to this, `strscpy`
should be used.
It should be noted that most call sites already zero-initialize the
destination buffer. However, I've opted to use `strscpy_pad` to maintain
the same exact behavior that `strncpy` produced (zero-padded tail up to
`len`).
Also see [3].
[1]: www.kernel.org/doc/html/latest/process/deprecated.html#strncpy-on-nul-terminated-strings
[2]: elixir.bootlin.com/linux/v6.3/source/net/ethtool/ioctl.c#L1944
[3]: manpages.debian.org/testing/linux-manual-4.8/strscpy.9.en.html
Link: https://github.com/KSPP/linux/issues/90
Reviewed-by: Nick Desaulniers <ndesaulniers@google.com>
Reviewed-by: Kees Cook <keescook@chromium.org>
Signed-off-by: Justin Stitt <justinstitt@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Anjali Kulkarni says:
====================
Process connector bug fixes & enhancements
Oracle DB is trying to solve a performance overhead problem it has been
facing for the past 10 years and using this patch series, we can fix this
issue.
Oracle DB runs on a large scale with 100000s of short lived processes,
starting up and exiting quickly. A process monitoring DB daemon which
tracks and cleans up after processes that have died without a proper exit
needs notifications only when a process died with a non-zero exit code
(which should be rare).
Due to the pmon architecture, which is distributed, each process is
independent and has minimal interaction with pmon. Hence fd based
solutions to track a process's spawning and exit cannot be used. Pmon
needs to detect the abnormal death of a process so it can cleanup after.
Currently it resorts to checking /proc every few seconds. Other methods
we tried like using system call to reduce the above overhead were not
accepted upstream.
With this change, we add event based filtering to proc connector module
so that DB can only listen to the events it is interested in. A new
event type PROC_EVENT_NONZERO_EXIT is added, which is only sent by kernel
to a listening application when any process exiting has a non-zero exit
status.
This change will give Oracle DB substantial performance savings - it takes
50ms to scan about 8K PIDs in /proc, about 500ms for 100K PIDs. DB does
this check every 3 secs, so over an hour we save 10secs for 100K PIDs.
With this, a client can register to listen for only exit or fork or a mix or
all of the events. This greatly enhances performance - currently, we
need to listen to all events, and there are 9 different types of events.
For eg. handling 3 types of events - 8K-forks + 8K-exits + 8K-execs takes
200ms, whereas handling 2 types - 8K-forks + 8K-exits takes about 150ms,
and handling just one type - 8K exits takes about 70ms.
Measuring the time using pidfds for monitoring 8K process exits took 4
times longer - 200ms, as compared to 70ms using only exit notifications
of proc connector. Hence, we cannot use pidfd for our use case.
This kind of a new event could also be useful to other applications like
Google's lmkd daemon, which needs a killed process's exit notification.
This patch series is organized as follows -
Patch 1 : Needed for patch 3 to work.
Patch 2 : Needed for patch 3 to work.
Patch 3 : Fixes some bugs in proc connector, details in the patch.
Patch 4 : Adds event based filtering for performance enhancements.
Patch 5 : Allow non-root users access to proc connector events.
Patch 6 : Selftest code for proc connector.
v9->v10 changes:
- Rebased to net-next, re-compiled and re-tested.
v8->v9 changes:
- Added sha1 ("title") of reversed patch as suggested by Eric Dumazet.
v7->v8 changes:
- Fixed an issue pointed by Liam Howlett in v7.
v6->v7 changes:
- Incorporated Liam Howlett's comments on v6
- Incorporated Kalesh Anakkur Purayil's comments
v5->v6 changes:
- Incorporated Liam Howlett's comments
- Removed FILTER define from proc_filter.c and added a "-f" run-time
option to run new filter code.
- Made proc_filter.c a selftest in tools/testing/selftests/connector
v4->v5 changes:
- Change the cover letter
- Fix a small issue in proc_filter.c
v3->v4 changes:
- Fix comments by Jakub Kicinski to incorporate root access changes
within bind call of connector
v2->v3 changes:
- Fix comments by Jakub Kicinski to separate netlink (patch 2) (after
layering) from connector fixes (patch 3).
- Minor fixes suggested by Jakub.
- Add new multicast group level permissions check at netlink layer.
Split this into netlink & connector layers (patches 6 & 7)
v1->v2 changes:
- Fix comments by Jakub Kicinski to keep layering within netlink and
update kdocs.
- Move non-root users access patch last in series so remaining patches
can go in first.
v->v1 changes:
- Changed commit log in patch 4 as suggested by Christian Brauner
- Changed patch 4 to make more fine grained access to non-root users
- Fixed warning in cn_proc.c,
Reported-by: kernel test robot <lkp@intel.com>
- Fixed some existing warnings in cn_proc.c
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Run as ./proc_filter -f to run new filter code. Run without "-f" to run
usual proc connector code without the new filtering code.
Signed-off-by: Anjali Kulkarni <anjali.k.kulkarni@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
There were a couple of reasons for not allowing non-root users access
initially - one is there was some point no proper receive buffer
management in place for netlink multicast. But that should be long
fixed. See link below for more context.
Second is that some of the messages may contain data that is root only. But
this should be handled with a finer granularity, which is being done at the
protocol layer. The only problematic protocols are nf_queue and the
firewall netlink. Hence, this restriction for non-root access was relaxed
for NETLINK_ROUTE initially:
https://lore.kernel.org/all/20020612013101.A22399@wotan.suse.de/
This restriction has also been removed for following protocols:
NETLINK_KOBJECT_UEVENT, NETLINK_AUDIT, NETLINK_SOCK_DIAG,
NETLINK_GENERIC, NETLINK_SELINUX.
Since process connector messages are not sensitive (process fork, exit
notifications etc.), and anyone can read /proc data, we can allow non-root
access here. However, since process event notification is not the only
consumer of NETLINK_CONNECTOR, we can make this change even more
fine grained than the protocol level, by checking for multicast group
within the protocol.
Allow non-root access for NETLINK_CONNECTOR via NL_CFG_F_NONROOT_RECV
but add new bind function cn_bind(), which allows non-root access only
for CN_IDX_PROC multicast group.
Signed-off-by: Anjali Kulkarni <anjali.k.kulkarni@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This patch adds the capability to filter messages sent by the proc
connector on the event type supplied in the message from the client
to the connector. The client can register to listen for an event type
given in struct proc_input.
This event based filteting will greatly enhance performance - handling
8K exits takes about 70ms, whereas 8K-forks + 8K-exits takes about 150ms
& handling 8K-forks + 8K-exits + 8K-execs takes 200ms. There are currently
9 different types of events, and we need to listen to all of them. Also,
measuring the time using pidfds for monitoring 8K process exits took
much longer - 200ms, as compared to 70ms using only exit notifications of
proc connector.
We also add a new event type - PROC_EVENT_NONZERO_EXIT, which is
only sent by kernel to a listening application when any process exiting,
has a non-zero exit status. This will help the clients like Oracle DB,
where a monitoring process wants notfications for non-zero process exits
so it can cleanup after them.
This kind of a new event could also be useful to other applications like
Google's lmkd daemon, which needs a killed process's exit notification.
The patch takes care that existing clients using old mechanism of not
sending the event type work without any changes.
cn_filter function checks to see if the event type being notified via
proc connector matches the event type requested by client, before
sending(matches) or dropping(does not match) a packet.
Signed-off-by: Anjali Kulkarni <anjali.k.kulkarni@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
The current proc connector code has the foll. bugs - if there are more
than one listeners for the proc connector messages, and one of them
deregisters for listening using PROC_CN_MCAST_IGNORE, they will still get
all proc connector messages, as long as there is another listener.
Another issue is if one client calls PROC_CN_MCAST_LISTEN, and another one
calls PROC_CN_MCAST_IGNORE, then both will end up not getting any messages.
This patch adds filtering and drops packet if client has sent
PROC_CN_MCAST_IGNORE. This data is stored in the client socket's
sk_user_data. In addition, we only increment or decrement
proc_event_num_listeners once per client. This fixes the above issues.
cn_release is the release function added for NETLINK_CONNECTOR. It uses
the newly added netlink_release function added to netlink_sock. It will
free sk_user_data.
Signed-off-by: Anjali Kulkarni <anjali.k.kulkarni@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
A new function netlink_release is added in netlink_sock to store the
protocol's release function. This is called when the socket is deleted.
This can be supplied by the protocol via the release function in
netlink_kernel_cfg. This is being added for the NETLINK_CONNECTOR
protocol, so it can free it's data when socket is deleted.
Signed-off-by: Anjali Kulkarni <anjali.k.kulkarni@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
To use filtering at the connector & cn_proc layers, we need to enable
filtering in the netlink layer. This reverses the patch which removed
netlink filtering - commit ID for that patch:
549017aa1b (netlink: remove netlink_broadcast_filtered).
Signed-off-by: Anjali Kulkarni <anjali.k.kulkarni@oracle.com>
Reviewed-by: Liam R. Howlett <Liam.Howlett@oracle.com>
Acked-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
Jakub Kicinski says:
====================
net: page_pool: remove page_pool_release_page()
page_pool_return_page() is a historic artefact from before
recycling of pages attached to skbs was supported. Theoretical
uses for it may be thought up but in practice all existing
users can be converted to use skb_mark_for_recycle() instead.
This code was previously posted as part of the memory provider RFC.
https://lore.kernel.org/all/20230707183935.997267-1-kuba@kernel.org/
====================
Link: https://lore.kernel.org/r/20230720010409.1967072-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that page_pool_release_page() is not exported we can
merge it with page_pool_return_page(). I believe that
the "Do not replace this with page_pool_return_page()"
comment was there in case page_pool_return_page() was
not inlined, to avoid two function calls.
Acked-by: Jesper Dangaard Brouer <hawk@kernel.org>
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Link: https://lore.kernel.org/r/20230720010409.1967072-5-kuba@kernel.org
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
There seems to be no user calling page_pool_release_page()
for legit reasons, all the users simply haven't been converted
to skb-based recycling, yet. Previous changes converted them.
Update the docs, and unexport the function.
Link: https://lore.kernel.org/r/20230720010409.1967072-4-kuba@kernel.org
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
stmmac removes pages from the page pool after attaching them
to skbs. Use page recycling instead.
skb heads are always copied, and pages are always from page
pool in this driver. We could as well mark all allocated skbs
for recycling.
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Link: https://lore.kernel.org/r/20230720010409.1967072-3-kuba@kernel.org
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
tsnep builds an skb with napi_build_skb() and then calls
page_pool_release_page() for the page in which that skb's
head sits. Use recycling instead, recycling of heads works
just fine.
Reviewed-by: Yunsheng Lin <linyunsheng@huawei.com>
Link: https://lore.kernel.org/r/20230720010409.1967072-2-kuba@kernel.org
Reviewed-by: Alexander Lobakin <aleksander.lobakin@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Currently, if cmd in the split ops array is of lower value than the
previous one, genl_validate_ops() continues to do the checks as if
the values are equal. This may result in non-obvious WARN_ON() hit in
these check.
Instead, check the incorrect ordering explicitly and put a WARN_ON()
in case it is broken.
Signed-off-by: Jiri Pirko <jiri@nvidia.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://lore.kernel.org/r/20230720111354.562242-1-jiri@resnulli.us
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Linus seems to like the MAINTAINERS file sorted, see
c192ac7357 ("MAINTAINERS 2: Electric Boogaloo").
Since this is currently not the case, restore the sort order.
Fixes: 3abf3d15ff ("MAINTAINERS: ASP 2.0 Ethernet driver maintainers")
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Acked-by: Justin Chen <justin.chen@broadcom.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Acked-by: Florian Fainelli <florian.fainelli@broadcom.com>
Link: https://lore.kernel.org/r/20230720151107.679668-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Hariprasad Kelam says:
====================
octeontx2-pf: support Round Robin scheduling
octeontx2 and CN10K silicons support Round Robin scheduling. When multiple
traffic flows reach transmit level with the same priority, with Round Robin
scheduling traffic flow with the highest quantum value is picked. With this
support, the user can add multiple classes with the same priority and
different quantum in htb offload.
This series of patches adds support for the same.
Patch1: implement transmit schedular allocation algorithm as preparation
for support round robin scheduling.
Patch2: Allow quantum parameter in HTB offload mode.
Patch3: extends octeontx2 htb offload support for Round Robin scheduling
Patch4: extend QOS documentation for Round Robin scheduling
Hariprasad Kelam (1):
docs: octeontx2: extend documentation for Round Robin scheduling
Naveen Mamindlapalli (3):
octeontx2-pf: implement transmit schedular allocation algorithm
sch_htb: Allow HTB quantum parameter in offload mode
octeontx2-pf: htb offload support for Round Robin scheduling
---
v4 * update classid values in documentation.
v3 * 1. update QOS documentation for round robin scheduling
2. added out of bound checks for quantum parameter
v2 * change data type of otx2_index_used to reduce size of structure
otx2_qos_cfg
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
