- Apr 08, 2021
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Wei Yongjun authored
Use the module_pci_driver() macro to make the code simpler by eliminating module_init and module_exit calls. Signed-off-by:
Wei Yongjun <weiyongjun1@huawei.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Wei Yongjun authored
Use the module_pci_driver() macro to make the code simpler by eliminating module_init and module_exit calls. Signed-off-by:
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Wei Yongjun authored
Use the module_pci_driver() macro to make the code simpler by eliminating module_init and module_exit calls. Signed-off-by:
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Wei Yongjun authored
Use the module_pci_driver() macro to make the code simpler by eliminating module_init and module_exit calls. Signed-off-by:
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Wei Yongjun authored
Use the module_pci_driver() macro to make the code simpler by eliminating module_init and module_exit calls. Signed-off-by:
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Wei Yongjun authored
Use the module_pci_driver() macro to make the code simpler by eliminating module_init and module_exit calls. Signed-off-by:
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Wei Yongjun authored
module_spi_driver() makes the code simpler by eliminating boilerplate code. Signed-off-by:
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Johan Hovold authored
According to the changelog, asynchronous mode was dropped sometime before v2.2. Let's get rid of the unused driver-specific async state as well so that it doesn't show up when doing tree-wide tty work. Signed-off-by:
Johan Hovold <johan@kernel.org> Signed-off-by:
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Colin Ian King authored
The macro CN23XX_PEM_BAR1_INDEX_REG is being used to shift oct->pcie_port (a u16) left 24 places. There are two subtle issues here, first the shift gets promoted to an signed int and then sign extended to a u64. If oct->pcie_port is 0x80 or more then the upper bits get sign extended to 1. Secondly shfiting a u16 24 bits will lead to an overflow so it needs to be cast to a u64 for all the bits to not overflow. It is entirely possible that the u16 port value is never large enough for this to fail, but it is useful to fix unintended overflows such as this. Fix this by casting the port parameter to the macro to a u64 before the shift. Addresses-Coverity: ("Unintended sign extension") Fixes: 5bc67f58 ("liquidio: CN23XX register definitions") Signed-off-by:Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Colin Ian King authored
The error check on err is always false as err is always 0 at the port_found label. The code is redundant and can be removed. Addresses-Coverity: ("Logically dead code") Signed-off-by: -
David S. Miller authored
Merge tag 'linux-can-next-for-5.13-20210407' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next Marc Kleine-Budde says: ==================== pull-request: can-next 2021-04-07 this is a pull request of 6 patches for net-next/master. The first patch targets the CAN driver infrastructure, it improves the alloc_can{,fd}_skb() function to set the pointer to the CAN frame to NULL if skb allocation fails. The next patch adds missing error handling to the m_can driver's RX path (the code was introduced in -next, no need to backport). In the next patch an unused constant is removed from an enum in the c_can driver. The last 3 patches target the mcp251xfd driver. They add BQL support and try to work around a sometimes broken CRC when reading the TBC register. ==================== Signed-off-by:
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Andrei Vagin authored
Here is only one place where we want to specify new_ifindex. In all other cases, callers pass 0 as new_ifindex. It looks reasonable to add a low-level function with new_ifindex and to convert dev_change_net_namespace to a static inline wrapper. Fixes: eeb85a14 ("net: Allow to specify ifindex when device is moved to another namespace") Suggested-by:
Jakub Kicinski <kuba@kernel.org> Signed-off-by:
Andrei Vagin <avagin@gmail.com> Acked-by:
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Andrei Vagin authored
In this case, we don't need to check that new_ifindex is positive in validate_linkmsg. Fixes: eeb85a14 ("net: Allow to specify ifindex when device is moved to another namespace") Suggested-by:
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
Saeed Mahameed says: ==================== mlx5-updates-2021-04-06 Introduce TC sample offload Background ---------- The tc sample action allows user to sample traffic matched by tc classifier. The sampling consists of choosing packets randomly and sampling them using psample module. The tc sample parameters include group id, sampling rate and packet's truncation (to save kernel-user traffic). Sample in TC SW --------------- User must specify rate and group id for sample action, truncate is optional. tc filter add dev enp4s0f0_0 ingress protocol ip prio 1 flower \ src_mac 02:25:d0:14:01:02 dst_mac 02:25:d0:14:01:03 \ action sample rate 10 group 5 trunc 60 \ action mirred egress redirect dev enp4s0f0_1 The tc sample action kernel module 'act_sample' will call another kernel module 'psample' to send sampled packets to userspace. MLX5 sample HW offload - MLX5 driver patches -------------------------------------------- The sample action is translated to a goto flow table object destination which samples packets according to the provided sample ratio. Sampled packets are duplicated. One copy is processed by a termination table, named the sample table, which sends the packet to the eswitch manager port (that will be processed by software). The second copy is processed by the default table which executes the subsequent actions. The default table is created per <vport, chain, prio> tuple as rules with different prios and chains may overlap. For example, for the following typical flow table: +-------------------------------+ + original flow table + +-------------------------------+ + original match + +-------------------------------+ + sample action + other actions + +-------------------------------+ We translate the tc filter with sample action to the following HW model: +---------------------+ + original flow table + +---------------------+ + original match + +---------------------+ | v +------------------------------------------------+ + Flow Sampler Object + +------------------------------------------------+ + sample ratio + +------------------------------------------------+ + sample table id | default table id + +------------------------------------------------+ | | v v +-----------------------------+ +----------------------------------------+ + sample table + + default table per <vport, chain, prio> + +-----------------------------+ +----------------------------------------+ + forward to management vport + + original match + +-----------------------------+ +----------------------------------------+ + other actions + +----------------------------------------+ Flow sampler object ------------------- Hardware introduces flow sampler object to do sample. It is a new destination type. Driver needs to specify two flow table ids in it. One is sample table id. The other one is the default table id. Sample table samples the packets according to the sample rate and forward the sampled packets to eswitch manager port. Default table finishes the subsequent actions. Group id and reg_c0 ------------------- Userspace program will take different actions for sampled packets according to tc sample action group id. So hardware must pass group id to software for each sampled packets. In Paul Blakey's "Introduce connection tracking offload" patch set, reg_c0 lower 16 bits are used for miss packet chain id restore. We convert reg_c0 lower 16 bits to a common object pool, so other features can also use it. Since sample group id is 32 bits, create a 16 bits object id to map the group id and write the object id to reg_c0 lower 16 bits. reg_c0 can only be used for matching. Write reg_c0 to flow_tag, so software can get the object id via flow_tag and find group id via the common object pool. Sampler restore handle ---------------------- Use common object pool to create an object id to map sample parameters. Allocate a modify header action to write the object id to reg_c0 lower 16 bits. Create a restore rule to pass the object id to software. So software can identify sampled packets via the object id and send it to userspace. Aggregate the modify header action, restore rule and object id to a sample restore handle. Re-use identical sample restore handle for the same object id. Send sampled packets to userspace --------------------------------- The destination for sampled packets is eswitch manager port, so representors can receive sampled packets together with the group id. Driver will send sampled packets and group id to userspace via psample. ==================== Signed-off-by: -
wengjianfeng authored
In function fdp_nci_patch_otp and fdp_nci_patch_ram，many goto out statements are used, and out label just return variable r. in some places,just jump to the out label, and in other places, assign a value to the variable r,then jump to the out label. It is unnecessary, we just use return sentences to replace goto sentences and delete out label. Signed-off-by:
wengjianfeng <wengjianfeng@yulong.com> Signed-off-by:
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Vadim Pasternak authored
Disable software thermal protection by removing critical trip points from all thermal zones. The software thermal protection is redundant given there are two layers of protection below it in firmware and hardware. The first layer is performed by firmware, the second, in case firmware was not able to perform protection, by hardware. The temperature threshold set for hardware protection is always higher than for firmware. Signed-off-by:
Vadim Pasternak <vadimp@nvidia.com> Signed-off-by:
Ido Schimmel <idosch@nvidia.com> Signed-off-by:
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Voon Weifeng authored
EHL PSE SGMII mode requires to ungate the SERDES PHY rx clk for power up sequence and vice versa. Signed-off-by:
Voon Weifeng <weifeng.voon@intel.com> Signed-off-by:
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Jakub Kicinski authored
Add missing kdoc for phy tunable callbacks. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Reviewed-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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David S. Miller authored
Mat Martineau says: ==================== mptcp: Cleanup, a new test case, and header trimming Some more patches to include from the MPTCP tree: Patches 1-6 refactor an address-related data structure and reduce some duplicate code that handles IPv4 and IPv6 addresses. Patch 7 adds a test case for the MPTCP netlink interface, passing a specific ifindex to the kernel. Patch 8 drops extra header options from IPv4 address echo packets, improving consistency and testability between IPv4 and IPv6. ==================== Signed-off-by: -
Davide Caratti authored
Current Linux carries echo-ed ADD_ADDR over pure TCP ACKs, so there is no need to add a DSS element that would fit only ADD_ADDR with IPv4 address. Drop the DSS from echo-ed ADD_ADDR, regardless of the IP version. Signed-off-by:
Davide Caratti <dcaratti@redhat.com> Signed-off-by:
Mat Martineau <mathew.j.martineau@linux.intel.com> Signed-off-by:
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Geliang Tang authored
This patch added a new testcase for setting the net device name. In it, pass the net device name to pm_nl_ctl to set the ifindex field of struct mptcp_pm_addr_entry. Signed-off-by:
Geliang Tang <geliangtang@gmail.com> Signed-off-by:
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Geliang Tang authored
The length of the IPv4 address is 4 octets and IPv6 is 16. That's the only difference between add_addr_generate_hmac and add_addr6_generate_hmac. This patch dropped the duplicate code and unify them into one. Co-developed-by:
Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by:
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Geliang Tang authored
Since the type of the address family in struct mptcp_options_received became sa_family_t, we should set AF_INET/AF_INET6 to it, instead of using MPTCP_ADDR_IPVERSION_4/6. Signed-off-by:
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Geliang Tang authored
This patch added a new struct mptcp_addr_info member addr in struct mptcp_options_received, and dropped the original family, addr_id, addr, addr6 and port fields in it. Then we can pass the parameter mp_opt.addr directly to mptcp_pm_add_addr_received and mptcp_pm_add_addr_echoed. Since the port number became big-endian now, use htons to convert the incoming port number to it. Also use ntohs to convert it when passing it to add_addr_generate_hmac or printing it out. Co-developed-by:
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Geliang Tang authored
Since the family field was added in struct mptcp_out_options, no need to use OPTION_MPTCP_ADD_ADDR6 to identify the IPv6 address. Drop it. Signed-off-by:
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Geliang Tang authored
This patch moved the mptcp_addr_info struct from protocol.h to mptcp.h, added a new struct mptcp_addr_info member addr in struct mptcp_out_options, and dropped the original addr, addr6, addr_id and port fields in it. Then we can use opts->addr to get the adding address from PM directly using mptcp_pm_add_addr_signal. Since the port number became big-endian now, use ntohs to convert it before sending it out with the ADD_ADDR suboption. Also convert it when passing it to add_addr_generate_hmac or printing it out. Co-developed-by:
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Geliang Tang authored
This patch moved the flags and ifindex fields from struct mptcp_addr_info to struct mptcp_pm_addr_entry. Add the flags and ifindex values as two new parameters to __mptcp_subflow_connect. In mptcp_pm_create_subflow_or_signal_addr, pass the local address entry's flags and ifindex fields to __mptcp_subflow_connect. In mptcp_pm_nl_add_addr_received, just pass two zeros to it. Signed-off-by:
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- Apr 07, 2021
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Marc Kleine-Budde authored
MCP251XFD_REG_TBC is the time base counter register. It increments once per SYS clock tick, which is 20 or 40 MHz. Observation shows that if the lowest byte (which is transferred first on the SPI bus) of that register is 0x00 or 0x80 the calculated CRC doesn't always match the transferred one. To reproduce this problem let the driver read the TBC register in a high frequency. This can be done by attaching only the mcp251xfd CAN controller to a valid terminated CAN bus and send a single CAN frame. As there are no other CAN controller on the bus, the sent CAN frame is not ACKed and the mcp251xfd repeats it. If user space enables the bus error reporting, each of the NACK errors is reported with a time stamp (which is read from the TBC register) to user space. $ ip link set can0 down $ ip link set can0 up type can bitrate 500000 berr-reporting on $ cansend can0 4FF#ff.01.00.00.00.00.00.00 This leads to several error messages per second: | mcp251xfd spi0.0 can0: CRC read error at address 0x0010 (length=4, data=00 3a 86 da, CRC=0x7753) retrying. | mcp251xfd spi0.0 can0: CRC read error at address 0x0010 (length=4, data=80 01 b4 da, CRC=0x5830) retrying. | mcp251xfd spi0.0 can0: CRC read error at address 0x0010 (length=4, data=00 e9 23 db, CRC=0xa723) retrying. | mcp251xfd spi0.0 can0: CRC read error at address 0x0010 (length=4, data=00 8a 30 db, CRC=0x4a9c) retrying. | mcp251xfd spi0.0 can0: CRC read error at address 0x0010 (length=4, data=80 f3 43 db, CRC=0x66d2) retrying. If the highest bit in the lowest byte is flipped the transferred CRC matches the calculated one. We assume for now the CRC calculation in the chip works on wrong data and the transferred data is correct. This patch implements the following workaround: - If a CRC read error on the TBC register is detected and the lowest byte is 0x00 or 0x80, the highest bit of the lowest byte is flipped and the CRC is calculated again. - If the CRC now matches, the _original_ data is passed to the reader. For now we assume transferred data was OK. Link: https://lore.kernel.org/r/20210406110617.1865592-5-mkl@pengutronix.de Cc: Manivannan Sadhasivam <mani@kernel.org> Cc: Thomas Kopp <thomas.kopp@microchip.com> Signed-off-by:
Marc Kleine-Budde <mkl@pengutronix.de>
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Marc Kleine-Budde authored
This patch factors out the crc check into a separate function. This is preparation for the next patch. Link: https://lore.kernel.org/r/20210406110617.1865592-4-mkl@pengutronix.de Cc: Manivannan Sadhasivam <mani@kernel.org> Cc: Thomas Kopp <thomas.kopp@microchip.com> Signed-off-by:
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Marc Kleine-Budde authored
This patch re-adds BQL support to the driver. Support for netdev_xmit_more() will be added in a separate patch series. Link: https://lore.kernel.org/r/20210406110617.1865592-3-mkl@pengutronix.de Cc: Manivannan Sadhasivam <mani@kernel.org> Cc: Thomas Kopp <thomas.kopp@microchip.com> Signed-off-by:
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Marc Kleine-Budde authored
This patch removes the unused enum BOSCH_C_CAN_PLATFORM. Link: https://lore.kernel.org/r/20210406110617.1865592-2-mkl@pengutronix.de Signed-off-by:
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Marc Kleine-Budde authored
In commit 1be37d3b ("can: m_can: fix periph RX path: use rx-offload to ensure skbs are sent from softirq context") the RX path for peripherals (i.e. SPI based m_can controllers) was converted to the rx-offload infrastructure. However, the error handling for can_rx_offload_queue_sorted() was forgotten. can_rx_offload_queue_sorted() will return with an error if the internal queue is full. This patch adds the missing error handling, by increasing the rx_fifo_errors. Fixes: 1be37d3b ("can: m_can: fix periph RX path: use rx-offload to ensure skbs are sent from softirq context") Link: https://lore.kernel.org/r/20210401084515.1455013-1-mkl@pengutronix.de Reported-by:
coverity-bot <keescook+coverity-bot@chromium.org> Addresses-Coverity-ID: 1503583 ("Error handling issues") Reviewed-by:
Kees Cook <keescook@chromium.org> Cc: Torin Cooper-Bennun <torin@maxiluxsystems.com> Signed-off-by:
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Marc Kleine-Budde authored
The handling of CAN bus errors typically consist of allocating a CAN error SKB using alloc_can_err_skb() followed by stats handling and filling the error details in the newly allocated CAN error SKB. Even if the allocation of the SKB fails the stats handling should not be skipped. The common pattern in CAN drivers is to allocate the skb and work on the struct can_frame pointer "cf", if it has been assigned by alloc_can_err_skb(). | skb = alloc_can_err_skb(priv->ndev, &cf); | | /* RX errors */ | if (bdiag1 & (MCP251XFD_REG_BDIAG1_DCRCERR | | MCP251XFD_REG_BDIAG1_NCRCERR)) { | netdev_dbg(priv->ndev, "CRC error\n"); | | stats->rx_errors++; | if (cf) | cf->data[3] |= CAN_ERR_PROT_LOC_CRC_SEQ; | } In case of an OOM alloc_can_err_skb() returns NULL, but doesn't set "cf" to NULL as well. For the above pattern to work the "cf" has to be initialized to NULL, which is easily forgotten. To solve this kind of problems, set "cf" to NULL if alloc_can_err_skb() returns NULL. Link: https://lore.kernel.org/r/20210402102245.1512583-1-mkl@pengutronix.de Suggested-by:Vincent MAILHOL <mailhol.vincent@wanadoo.fr> Reviewed-by:
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Chris Mi authored
The following diagram illustrates the hardware model for tc sample action: +---------------------+ + original flow table + +---------------------+ + original match + +---------------------+ | v +------------------------------------------------+ + Flow Sampler Object + +------------------------------------------------+ + sample ratio + +------------------------------------------------+ + sample table id | default table id + +------------------------------------------------+ | | v v +-----------------------------+ +----------------------------------------+ + sample table + + default table per <vport, chain, prio> + +-----------------------------+ +----------------------------------------+ + forward to management vport + + original match + +-----------------------------+ +----------------------------------------+ + other actions + +----------------------------------------+ The sample action is translated to a goto flow table object destination which samples packets according to the provided sample ratio. Sampled packets are duplicated. One copy is processed by a termination table, named the sample table, which sends the packet to the eswitch manager port (that will be processed by software). The second copy is processed by the default table which executes the subsequent actions. The default table is created per <vport, chain, prio> tuple as rules with different prios and chains may overlap. Signed-off-by:Chris Mi <cmi@nvidia.com> Reviewed-by:
Oz Shlomo <ozsh@nvidia.com> Reviewed-by:
Mark Bloch <mbloch@nvidia.com> Signed-off-by:
Saeed Mahameed <saeedm@nvidia.com>
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Chris Mi authored
Mark the sampled packets with a sample restore object. Send sampled packets using the psample api. Signed-off-by:
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Chris Mi authored
As a pre-step to process sampled packet in this function. Signed-off-by:
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Chris Mi authored
Use common object pool to create an object ID to map sample parameters. Allocate a modify header action to write the object ID to reg_c0 lower 16 bits. Create a restore rule to pass the object ID to software. So software can identify sampled packets via the object ID and send it to userspace. Aggregate the modify header action, restore rule and object ID to a sample restore handle. Re-use identical sample restore handle for the same object ID. Signed-off-by:
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Chris Mi authored
In order to offload sample action, HW introduces sampler object. The sampler object samples packets according to the provided sample ratio. Sampled packets are duplicated. One copy is processed by a termination table, named the sample table, which sends the packet up to software. The second copy is processed by the default table. Instantiate sampler object. Re-use identical sampler object for the same sample ratio, sample table and default table as a prestep for offloading tc sample actions. Signed-off-by:
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Chris Mi authored
Sampled packets are sent to software using termination tables. There is only one rule in that table that is to forward sampled packets to the e-switch management vport. Create a sampler termination table and rule for each eswitch. Signed-off-by:
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Chris Mi authored
Parse TC sample action and save sample parameters in flow attribute data structure. Signed-off-by:
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