- 23 Sep, 2022 40 commits
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Shang XiaoJing authored
devm_ioremap_resource() prints error message in itself. Remove the dev_err call to avoid redundant error message. Signed-off-by:
Shang XiaoJing <shangxiaojing@huawei.com> Link: https://lore.kernel.org/all/20220923095835.14647-1-shangxiaojing@huawei.comSigned-off-by:
Marc Kleine-Budde <mkl@pengutronix.de>
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Vasanth Sadhasivan authored
DMA allocated buffers are a precious resource. If there is no need for DMA allocations, then it might be worth to use non-dma allocated buffers. After testing the gs_usb driver with and without DMA allocation, there does not seem to be a significant change in latency or CPU utilization either way. Therefore, DMA allocation is not necessary and removed. Internal buffers used within urbs were managed and freed manually. These buffers are no longer needed to be managed by the driver. The URB_FREE_BUFFER flag, allows for the buffers in question to be automatically freed. Co-developed-by:
Rhett Aultman <rhett.aultman@samsara.com> Signed-off-by:
Vasanth Sadhasivan <vasanth.sadhasivan@samsara.com> Link: https://lore.kernel.org/all/20220920154724.861093-2-rhett.aultman@samsara.comSigned-off-by:
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Marc Kleine-Budde authored
The candleLight community is working on switchable termination support for the candleLight firmware. As the the Linux CAN framework supports switchable termination add this feature to the gs_usb driver. Devices supporting the feature should set the GS_CAN_FEATURE_TERMINATION and implement the GS_USB_BREQ_SET_TERMINATION and GS_USB_BREQ_GET_TERMINATION control messages. For now the driver assumes for activated termination the standard termination value of 120Ω. Link: https://lore.kernel.org/all/20220923074114.662045-1-mkl@pengutronix.de Link: https://github.com/candle-usb/candleLight_fw/issues/92 Link: https://github.com/candle-usb/candleLight_fw/pull/109 Link: https://github.com/candle-usb/candleLight_fw/pull/108 Cc: Daniel Trevitz <daniel.trevitz@wika.com> Cc: Ryan Edwards <ryan.edwards@gmail.com> Signed-off-by:
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Marc Kleine-Budde authored
Introduce a label to free the allocated candev in case of an error and make use of if. Fix a memory leak if the extended bit timing cannot be read. Extend the error messages to print the number of the failing channel and the symbolic error name. Link: https://lore.kernel.org/all/20220921193902.575416-4-mkl@pengutronix.deSigned-off-by:
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Marc Kleine-Budde authored
Convert the driver to use usb_control_msg_{send,recv}() instead of usb_control_msg(). These functions allow the data to be placed on the stack. This makes the driver a lot easier as we don't have to deal with dynamically allocated memory. Link: https://lore.kernel.org/all/20220921193902.575416-3-mkl@pengutronix.deSigned-off-by: -
Marc Kleine-Budde authored
Most of the driver uses the variable "dev" to point to the struct gs_can. Use the same name in gs_cmd_reset(), too. Rename gsdev to dev. Fixes: d08e973a ("can: gs_usb: Added support for the GS_USB CAN devices") Link: https://lore.kernel.org/all/20220921193902.575416-2-mkl@pengutronix.deSigned-off-by:
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Marc Kleine-Budde authored
On busy networks the CAN controller might receive CAN frames directly after starting it but before the timecounter is setup. This will lead to NULL pointer deref while converting the converting the CAN frame's timestamp with the timecounter. Close the race window by setting up the timecounter before starting the CAN controller. Fixes: 45dfa45f ("can: gs_usb: add RX and TX hardware timestamp support") Link: https://lore.kernel.org/all/20220921081329.385509-1-mkl@pengutronix.de Cc: John Whittington <git@jbrengineering.co.uk Tested-by:
John Whittington <git@jbrengineering.co.uk> Signed-off-by:
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Marc Kleine-Budde authored
The struct timecounter::cycle_last is a 64 bit variable, read by timecounter_cyc2time(), and written by timecounter_read(). On 32 bit architectures this is not atomic. Add a spinlock to protect access to struct timecounter::cycle_last. In the gs_usb_timestamp_read() callback the lock is dropped to execute a sleeping synchronous USB transfer. This is safe, as the variable we want to protect is accessed during this call. Fixes: 45dfa45f ("can: gs_usb: add RX and TX hardware timestamp support") Link: https://lore.kernel.org/all/20220920100416.959226-3-mkl@pengutronix.de Cc: John Whittington <git@jbrengineering.co.uk> Tested-by:
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Marc Kleine-Budde authored
The 2nd argument of usb_control_msg_recv() is the "endpoint", usb_control_msg_recv() will internally convert the endpoint into a pipe with usb_rcvctrlpipe(). In gs_usb_get_timestamp() not the endpoint "0" is passed, but the pipe. This worked by accident as endpoint is a __u8 and the lowest 8 bits of the pipe are 0. Fix this copy/paste error by using the correct endpoint of "0". Fixes: 45dfa45f ("can: gs_usb: add RX and TX hardware timestamp support") Link: https://lore.kernel.org/all/20220920100416.959226-2-mkl@pengutronix.de Cc: John Whittington <git@jbrengineering.co.uk> Tested-by:
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Marc Kleine-Budde authored
Ziyang Xuan <william.xuanziyang@huawei.com> says: Do some small optimization for can_bcm. v1: https://lore.kernel.org/all/cover.1662606045.git.william.xuanziyang@huawei.com Link: https://lore.kernel.org/all/cover.1663206163.git.william.xuanziyang@huawei.comSigned-off-by:
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Ziyang Xuan authored
If can_send() fail, it should not update frames_abs counter in bcm_can_tx(). Add the result check for can_send() in bcm_can_tx(). Suggested-by:
Oliver Hartkopp <socketcan@hartkopp.net> Signed-off-by:
Ziyang Xuan <william.xuanziyang@huawei.com> Link: https://lore.kernel.org/all/9851878e74d6d37aee2f1ee76d68361a46f89458.1663206163.git.william.xuanziyang@huawei.comAcked-by:
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Ziyang Xuan authored
Now, register_netdevice_notifier() and register_pernet_subsys() are both after can_proto_register(). It can create CAN_BCM socket and process socket once can_proto_register() successfully, so it is possible missing notifier event or proc node creation because notifier or bcm proc directory is not registered or created yet. Although this is a low probability scenario, it is not impossible. Move register_pernet_subsys() and register_netdevice_notifier() to the front of can_proto_register(). In addition, register_pernet_subsys() and register_netdevice_notifier() may fail, check their results are necessary. Signed-off-by:
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Jakub Kicinski authored
Yang Yingliang says: ==================== net: dsa: remove unnecessary set_drvdata() In this patch set, I removed all set_drvdata(NULL) functions in ->remove() in drivers/net/dsa/. The driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(), so all set_drvdata(NULL) functions in ->remove() is redundant, they can be removed. Here is the previous patch set: https://lore.kernel.org/netdev/facfc855-d082-cc1c-a0bc-027f562a2f45@huawei.com/T/ ==================== Link: https://lore.kernel.org/r/20220921140524.3831101-1-yangyingliang@huawei.comSigned-off-by:
Jakub Kicinski <kuba@kernel.org>
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Yang Yingliang authored
Remove unnecessary dev_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
Yang Yingliang <yangyingliang@huawei.com> Signed-off-by:
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Yang Yingliang authored
Remove unnecessary set_drvdata(NULL) function in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
Linus Walleij <linus.walleij@linaro.org> Signed-off-by:
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Yang Yingliang authored
Remove unnecessary spi_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Yang Yingliang authored
Remove unnecessary platform_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Yang Yingliang authored
Remove unnecessary set_drvdata(NULL) function in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
Alvin Šipraga <alsi@bang-olufsen.dk> Acked-by:
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Yang Yingliang authored
Remove unnecessary dev_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Yang Yingliang authored
Remove unnecessary dev_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Yang Yingliang authored
Remove unnecessary set_drvdata(NULL) function in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Yang Yingliang authored
Remove unnecessary dev_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Yang Yingliang authored
Remove unnecessary dev_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Yang Yingliang authored
Remove unnecessary dev_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Yang Yingliang authored
Remove unnecessary set_drvdata(NULL) function in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Yang Yingliang authored
Remove unnecessary platform_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Yang Yingliang authored
Remove unnecessary dev_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Yang Yingliang authored
Remove unnecessary platform_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
Kurt Kanzenbach <kurt@linutronix.de> Signed-off-by:
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Yang Yingliang authored
Remove unnecessary dev_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Yang Yingliang authored
Remove unnecessary platform_set_drvdata() in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Yang Yingliang authored
Remove unnecessary set_drvdata(NULL) function in ->remove(), the driver_data will be set to NULL in device_unbind_cleanup() after calling ->remove(). Signed-off-by:
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Andy Shevchenko authored
We have already a helper to get the first child device, use it and drop custom approach. Signed-off-by:
Andy Shevchenko <andriy.shevchenko@linux.intel.com> Acked-by:
Vadim Fedorenko <vadfed@fb.com> Link: https://lore.kernel.org/r/20220921141005.2443-1-andriy.shevchenko@linux.intel.comSigned-off-by:
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Li Zhong authored
Check the return value of nla_nest_start(). When starting the entry level nested attributes, if the tailroom of socket buffer is insufficient to store the attribute header and payload, the return value will be NULL. There is, however, no real bug here since if the skb is full nla_put_be16() will fail as well and we'll error out. Signed-off-by:
Li Zhong <floridsleeves@gmail.com> Link: https://lore.kernel.org/r/20220921181716.1629541-1-floridsleeves@gmail.comSigned-off-by:
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Jakub Kicinski authored
Saeed Mahameed says: ==================== mlx5 MACSec Extended packet number and replay window offload This is a follow up series to the previously submitted mlx5 MACsec offload [1] earlier this release cycle. In this series we add the support for MACsec Extended packet number and replay window offloads. First patch is a simple modification (code movements) to the core macsec code to allow exposing the EPN related user properties to the offloading device driver. The rest of the patches are mlx5 specific, we start off with fixing some trivial issues with mlx5 MACsec code, and a simple refactoring to allow additional functionality in mlx5 macsec to support EPN and window replay offloads. A) Expose mkey creation functionality to MACsec B) Expose ASO object to MACsec, to allow advanced steering operations, ASO objects are used to modify MACsec steering objects in fastpath. 1) Support MACsec offload extended packet number (EPN) MACsec EPN splits the packet number (PN) into two 32-bits fields, epn_lsb (32 least significant bits (LSBs) of PN) and epn_msb (32 most significant bits (MSBs) of PN). Epn_msb bits are managed by SW and for that HW is required to send an object change event of type EPN event notifying the SW to update the epn_msb in addition, once epn_msb is updated SW update HW with the new epn_msb value for HW to perform replay protection. To prevent HW from stopping while handling the event, SW manages another bit for HW called epn_overlap, HW uses the latter to get an indication regarding how to read the epn_msb value correctly while still receiving packets. Add epn event handling that updates the epn_overlap and epn_msb for every 2^31 packets according to the following logic: if epn_lsb crosses 2^31 (half sequence number wraparound) upon HW relevant event, SW updates the esn_overlap value to OLD (value = 1). When the epn_lsb crosses 2^32 (full sequence number wraparound) upon HW relevant event, SW updates the esn_overlap to NEW (value = 0) and increment the esn_msb. When using MACsec EPN a salt and short secure channel id (ssci) needs to be provided by the user, when offloading EPN need to pass this salt and ssci to the HW to be used in the initial vector (IV) calculations. 2) Support MACsec offload replay window Support setting replay window size for MACsec offload. Currently supported window size of 32, 64, 128 and 256 bit. Other values will be returned as invalid parameter. [1] https://lore.kernel.org/netdev/20220906052129.104507-1-saeed@kernel.org/ ==================== Link: https://lore.kernel.org/r/20220921181054.40249-1-saeed@kernel.orgSigned-off-by: -
Emeel Hakim authored
Support setting replay window size for MACsec offload. Currently supported window size of 32, 64, 128 and 256 bit. Other values will be returned as invalid parameter. Reviewed-by:
Raed Salem <raeds@nvidia.com> Signed-off-by:
Emeel Hakim <ehakim@nvidia.com> Reviewed-by:
Tariq Toukan <tariqt@nvidia.com> Signed-off-by:
Saeed Mahameed <saeedm@nvidia.com> Signed-off-by:
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Emeel Hakim authored
MACsec EPN splits the packet number (PN) into two 32-bits fields, epn_lsb (32 least significant bits (LSBs) of PN) and epn_msb (32 most significant bits (MSBs) of PN). Epn_msb bits are managed by SW and for that HW is required to send an object change event of type EPN event notifying the SW to update the epn_msb in addition, once epn_msb is updated SW update HW with the new epn_msb value for HW to perform replay protection. To prevent HW from stopping while handling the event, SW manages another bit for HW called epn_overlap, HW uses the latter to get an indication regarding how to read the epn_msb value correctly while still receiving packets. Add epn event handling that updates the epn_overlap and epn_msb for every 2^31 packets according to the following logic: if epn_lsb crosses 2^31 (half sequence number wraparound) upon HW relevant event, SW updates the esn_overlap value to OLD (value = 1). When the epn_lsb crosses 2^32 (full sequence number wraparound) upon HW relevant event, SW updates the esn_overlap to NEW (value = 0) and increment the esn_msb. When using MACsec EPN a salt and short secure channel id (ssci) needs to be provided by the user, when offloading EPN need to pass this salt and ssci to the HW to be used in the initial vector (IV) calculations. Reviewed-by:
kernel test robot <lkp@intel.com> Signed-off-by:
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Emeel Hakim authored
Postpone MACsec initialization to the mlx5e profile enable stage to have user access region (UAR) pages and other resources ready before MACsec initialization to initialize advanced steering operation (ASO) hardware resources. Reviewed-by:
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Emeel Hakim authored
Add support for ASO work queue entry (WQE) data to allow reading data upon querying the ASO work queue (WQ). Register user mode memory registration (UMR) upon ASO WQ init, de-register UMR upon ASO WQ cleanup. MACsec uses UMR to determine the cause of the event triggered by the HW since different scenarios could trigger the same event. Setup MACsec ASO object to sync HW with SW about various macsec flow stateful features like: replay window, lifetime limits e.t.c Reviewed-by:
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Emeel Hakim authored
Expose mlx5e_create_mkey function, for future patches in the macsec series to use. The above function creates a memory key which describes a region in memory that can be later used by both HW and SW. The counterpart destroy functionality is already exposed. Reviewed-by:
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Emeel Hakim authored
Add ifc bits related to advanced steering operations (ASO) and general object modify for macsec to use as part of offloading EPN and replay protection features. Reviewed-by:
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