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The definition of RFKILL_IOCTL_MAX_SIZE introduced by commit
54f586a91532 ("rfkill: make new event layout opt-in") is unusable
since it is based on RFKILL_IOC_EXT_SIZE which has not been defined.
Fix that by replacing the undefined constant with the constant which
is intended to be used in this definition.
Fixes: 54f586a91532 ("rfkill: make new event layout opt-in")
Cc: stable@vger.kernel.org # 5.11+
Signed-off-by: Gleb Fotengauer-Malinovskiy <glebfm@altlinux.org>
Signed-off-by: Dmitry V. Levin <ldv@altlinux.org>
Link: https://lore.kernel.org/r/20220506172454.120319-1-glebfm@altlinux.org
[add commit message provided later by Dmitry]
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This accesses the wdev's chandef etc., so cannot safely
be used without holding the lock.
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20220506102136.06b7205419e6.I2a87c05fbd8bc5e565e84d190d4cfd2e92695a90@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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This is needed since it might use (and pass out) pointers to
e.g. keys protected by RCU. Can't really happen here as the
frames aren't encrypted, but we need to still adhere to the
rules.
Fixes: cacfddf82baf ("mac80211_hwsim: initialize ieee80211_tx_info at hw_scan_work")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20220505230421.5f139f9de173.I77ae111a28f7c0e9fd1ebcee7f39dbec5c606770@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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We need to RCU protect the chanctx_conf access, so
do that.
Fixes: 585625c955b1 ("mac80211_hwsim: check TX and STA bandwidth")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20220505230421.fb8055c081a2.Ic6da3307c77a909bd61a0ea25dc2a4b08fe1b03f@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
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Yuiko Oshino says:
====================
net: phy: add LAN8742 phy support
add LAN8742 phy support
update LAN88xx phy ID and phy ID mask so that it can coexist with LAN8742
The current phy IDs on the available hardware.
LAN8742 0x0007C130, 0x0007C131
LAN88xx 0x0007C132
v3->v4:
- fixed the one tab missing issue in the smsc.c.
v2->v3:
-added comments about the 0xfffffff2 mask that is for the differentiation and the future revisions.
v1->v2:
-removed "REVIEW REQUEST3" from the PATCH 1/2.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The current phy IDs on the available hardware.
LAN8742 0x0007C130, 0x0007C131
Signed-off-by: Yuiko Oshino <yuiko.oshino@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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update LAN88xx phy ID and phy ID mask because the existing code conflicts with the LAN8742 phy.
The current phy IDs on the available hardware.
LAN8742 0x0007C130, 0x0007C131
LAN88xx 0x0007C132
Signed-off-by: Yuiko Oshino <yuiko.oshino@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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I switched to use my kernel.org address, the old kvalo@codeaurora.org address
doesn't work anymore.
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Tested-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220506084212.8952-1-kvalo@kernel.org
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Oleksij Rempel says:
====================
add ti dp83td510 support
changes v4:
- dp83td510: remove unused variables
- s/base1/baset1
- s/genphy_c45_baset1_read_master_slave/genphy_c45_pma_baset1_read_master_slave
changes v3:
- export reusable code snippets and make use of it in the dp83td510
driver
changes v2:
- rewrite the driver reduce usage of common code and to reduce amount of
quirks.
- add genphy_c45_baset1_an_config_aneg fix
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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The DP83TD510E is an ultra-low power Ethernet physical layer transceiver
that supports 10M single pair cable.
This driver was tested with NXP SJA1105, STMMAC and ASIX AX88772B USB Ethernet
controller.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Export genphy_c45_baset1_read_status() to make it reusable by PHY drivers.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Since MDIO_PMA_PMD_BT1_CTRL register shows actual configuration (and
forced state configuration is equal to the state), we should show
this configuration for ethtool.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move baset1 specific part of genphy_c45_read_pma() code to
separate function to make it reusable by PHY drivers.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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configuration
Do not change default master/slave forced configuration if no changes was
requested.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Move baset1 specific part of genphy_c45_pma_setup_forced() code to
separate function to make it reusable by PHY drivers.
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Do not change default master/slave autoneg configuration if no
changes was requested.
Fixes: 3da8ffd8545f ("net: phy: Add 10BASE-T1L support in phy-c45")
Signed-off-by: Oleksij Rempel <o.rempel@pengutronix.de>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Alaa Mohamed says:
====================
propagate extack to vxlan_fdb_delete
In order to propagate extack to vxlan_fdb_delete and vxlan_fdb_parse,
add extack to .ndo_fdb_del and edit all fdb del handelers.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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This patch adds extack msg support to vxlan_fdb_delete and vxlan_fdb_parse.
extack is used to propagate meaningful error msgs to the user of vxlan
fdb netlink api
Signed-off-by: Alaa Mohamed <eng.alaamohamedsoliman.am@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add extack support to .ndo_fdb_del in netdevice.h and
all related methods.
Signed-off-by: Alaa Mohamed <eng.alaamohamedsoliman.am@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Ricardo Martinez says:
====================
net: wwan: t7xx: PCIe driver for MediaTek M.2 modem
t7xx is the PCIe host device driver for Intel 5G 5000 M.2 solution which
is based on MediaTek's T700 modem to provide WWAN connectivity.
The driver uses the WWAN framework infrastructure to create the following
control ports and network interfaces:
* /dev/wwan0mbim0 - Interface conforming to the MBIM protocol.
Applications like libmbim [1] or Modem Manager [2] from v1.16 onwards
with [3][4] can use it to enable data communication towards WWAN.
* /dev/wwan0at0 - Interface that supports AT commands.
* wwan0 - Primary network interface for IP traffic.
The main blocks in t7xx driver are:
* PCIe layer - Implements probe, removal, and power management callbacks.
* Port-proxy - Provides a common interface to interact with different types
of ports such as WWAN ports.
* Modem control & status monitor - Implements the entry point for modem
initialization, reset and exit, as well as exception handling.
* CLDMA (Control Layer DMA) - Manages the HW used by the port layer to send
control messages to the modem using MediaTek's CCCI (Cross-Core
Communication Interface) protocol.
* DPMAIF (Data Plane Modem AP Interface) - Controls the HW that provides
uplink and downlink queues for the data path. The data exchange takes
place using circular buffers to share data buffer addresses and metadata
to describe the packets.
* MHCCIF (Modem Host Cross-Core Interface) - Provides interrupt channels
for bidirectional event notification such as handshake, exception, PM and
port enumeration.
The compilation of the t7xx driver is enabled by the CONFIG_MTK_T7XX config
option which depends on CONFIG_WWAN.
This driver was originally developed by MediaTek. Intel adapted t7xx to
the WWAN framework, optimized and refactored the driver source code in close
collaboration with MediaTek. This will enable getting the t7xx driver on the
Approved Vendor List for interested OEM's and ODM's productization plans
with Intel 5G 5000 M.2 solution.
List of contributors:
Amir Hanania <amir.hanania@intel.com>
Andriy Shevchenko <andriy.shevchenko@linux.intel.com>
Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Dinesh Sharma <dinesh.sharma@intel.com>
Eliot Lee <eliot.lee@intel.com>
Haijun Liu <haijun.liu@mediatek.com>
M Chetan Kumar <m.chetan.kumar@intel.com>
Mika Westerberg <mika.westerberg@linux.intel.com>
Moises Veleta <moises.veleta@intel.com>
Pierre-louis Bossart <pierre-louis.bossart@intel.com>
Chiranjeevi Rapolu <chiranjeevi.rapolu@intel.com>
Ricardo Martinez <ricardo.martinez@linux.intel.com>
Madhusmita Sahu <madhusmita.sahu@intel.com>
Muralidharan Sethuraman <muralidharan.sethuraman@intel.com>
Soumya Prakash Mishra <Soumya.Prakash.Mishra@intel.com>
Sreehari Kancharla <sreehari.kancharla@intel.com>
Suresh Nagaraj <suresh.nagaraj@intel.com>
[1] https://www.freedesktop.org/software/libmbim/
[2] https://www.freedesktop.org/software/ModemManager/
[3] https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/merge_requests/582
[4] https://gitlab.freedesktop.org/mobile-broadband/ModemManager/-/merge_requests/523
V8:
- Rebase skb_data_area_size() patch (02).
V7:
- Delete unused macros.
- Avoid duplicated calls to le32_to_cpu().
- Fix 'out of bounds' compilation error.
- Rename port_number to port_count.
- Remove '!!' when the destination variable is a boolean.
- Remove unneeded spinlock around rx_length_th.
- Remove common field from union inside dpmaif_drb struct.
- Use 'goto' for the exit flow in t7xx_pci_enable_sleep().
- Merge CLDMA tgpd and rgpd structs.
- Add comments to clarify skb consumption by ports.
- Introduce skb_data_area_size() helper.
- Declare the port config array as constant.
- Update CLDMA_JUMBO_BUFF_SZ definition when ccci_header
is introduced by port-proxy patch.
- Update Reviewed-by tags.
- Simplify t7xx_dpmaif_tx_send_skb() and make t7xx_dpmaif_add_skb_to_ring()
report the tx queue full state early.
V6:
- Remove unneeded initializations and bit masks.
- Remove t7xx_common.h file.
- Add comment to circular linking in GPD list.
- Use min instead of min_t.
- Use int for local indexes instead of short or char.
- Update the commit message in CLDMA patch about dependencies on core patch.
- Add space between contributor name and email address.
- Rename registers with double negatives
e.g. DIS_ASPM_LOWPWR_CLR_0 -> ENABLE_ASPM_LOWPWR.
- Fix a race condition in pci sleep resource locking.
- Initialize interrupts with t7xx_pcie_mac_set_int() instead of 'clear'.
- Remove duplicate spin_lock_init(&md->exp_lock).
- Remove .ndo_select_queue callback due to singular TX queue.
- Remove call to deprecated netif_rx_any_context().
- Fix include guard name in t7xx_hif_dpmaif.h.
- Remove unused q_num parameter in DPMAIF functions.
- Do not serialize the drb_wr_idx write in t7xx_dpmaif_add_skb_to_ring()
and the read from t7xx_txq_drb_wr_available().
- Fix potential leak in t7xx_dpmaif_add_skb_to_ring().
- Unionize:
DRB structs: msg and pd.
PIT structs: msg and pd.
- Replace list_head & spinlock with skb_buff_head in dpmaif_tx_queue.
- Remove rx_length_th check in TX WWAN port flow.
- Remove wwan_remove_port() from the critical section in WWAN port uninit.
- Use skb_end_pointer() to avoid conditional compilation.
- Simplify the loop in t7xx_port_ctrl_tx() by checking the buffer offset
instead of calculating the number of required packets.
- Remove the code for unused channel PORT_CH_STATUS_RX.
- Remove bit flags from ports. Ports can check chan_enable instead of the
PORT_F_RX_ALLOW_DROP flag.
- Use INVALID_SEQ_NUM to identify the first seq number.
- Rename port_static to port_conf and ports_private to ports.
- Implement t7xx_port_send_skb() and t7xx_port_send_ctl_skb() in a layered
approach to reduce duplicated code and simplify the CCCI header handling.
- Move wwan_port_rx() call from port-proxy to WWAN port.
- Rename t7xx_port_recv_skb() to t7xx_port_enqueue_skb().
- Move control message parsing logic from port-proxy to control port,
preserve the endianness when parsing the message and make port-proxy
export a function to enable/disable ports.
- Use flexible arrays for:
port-proxy ports.
payload data in t7xx_fsm_event, port_msg, and mtk_runtime_feature.
v5:
- Update Intel's copyright years to 2021-2022.
- Remove circular dependency between DPMAIF HW (07) and HIF (08).
- Keep separate patches for CLDMA (02) and Core (03)
but improve the code split by decoupling CLDMA from
modem ops and cleaning up t7xx_common.h.
- Rename ID_CLDMA0/ID_CLDMA1 to CLDMA_ID_AP/CLDMA_ID_MD.
- Consistently use CLDMA's ring_lock to protect tr_ring.
- Free resources first and then print messages.
- Implement suggested name changes.
- Do not explicitly include dev_printk.h.
- Remove redundant dev_err()s.
- Fix possible memory leak during probe.
- Remove infrastructure for legacy interrupts.
- Remove unused macros and variables, including those that
can be replaced with constants.
- Remove PCIE_MAC_MSIX_MSK_SET macro which is duplicated code.
- Refactor __t7xx_pci_pm_suspend() for clarity.
- Refactor t7xx_cldma_rx_ring_init() and t7xx_cldma_tx_ring_init().
- Do not use & for function callbacks.
- Declare a structure to access skb->cb[] data.
- Use skb_put_data instead of memcpy.
- No need to use kfree_sensitive.
- Use dev_kfree_skb() instead of kfree_skb().
- Refactor t7xx_prepare_device_rt_data() to remove potential leaks,
avoid unneeded memset and keep rt_data and packet_size updates
inside the same 'if' block.
- Set port's rx_length_th back to 0 during uninit.
- Remove unneeded 'blocking' parameter from t7xx_cldma_send_skb().
- Return -EIO in t7xx_cldma_send_skb() if the queue is inactive.
- Refactor t7xx_cldma_qs_are_active() to use pci_device_is_present().
- Simplify t7xx_cldma_stop_q() and rename it to t7xx_cldma_stop_all_qs().
- Fix potential leaks in t7xx_cldma_init().
- Improve error handling in fsm_append_event and fsm_routine_starting().
- Propagate return codes from fsm_append_cmd() and t7xx_fsm_append_event().
- Refactor fsm_wait_for_event() to avoid unnecessary sleep.
- Create the WWAN ports and net device only after the modem is in
the ready state.
- Refactor t7xx_port_proxy_recv_skb() and port_recv_skb().
- Rename t7xx_port_check_rx_seq_num() as t7xx_port_next_rx_seq_num()
and fix the seq_num logic to handle overflows.
- Declare seq_nums as u16 instead of short.
- Use unsigned int for local indexes.
- Use min_t instead of the ternary operator.
- Refactor the loop in t7xx_dpmaif_rx_data_collect() to avoid a dead
condition check.
- Use a bitmap (bat_bitmap) instead of an array to keep track of
the DRB status. Used in t7xx_dpmaif_avail_pkt_bat_cnt().
- Refactor t7xx_dpmaif_tx_send_skb() to protect tx_submit_skb_cnt
with spinlock and remove the misleading tx_drb_available variable.
- Consolidate bit operations before endianness conversion.
- Use C bit fields in dpmaif_drb_skb struct which is not HW related.
- Add back the que_started check in t7xx_select_tx_queue().
- Create a helper function to get the DRB count.
- Simplify the use of 'usage' during t7xx_ccmni_close().
- Enforce CCMNI MTU selection with BUILD_BUG_ON() instead of a comment.
- Remove t7xx_ccmni_ctrl->capability parameter which remains constant.
v4:
- Implement list_prev_entry_circular() and list_next_entry_circular() macros.
- Remove inline from all c files.
- Define ioread32_poll_timeout_atomic() helper macro.
- Fix return code for WWAN port tx op.
- Allow AT commands fragmentation same as MBIM commands.
- Introduce t7xx_common.h file in the first patch.
- Rename functions and variables as suggested in v3.
- Reduce code duplication by creating fsm_wait_for_event() helper function.
- Remove unneeded dev_err in t7xx_fsm_clr_event().
- Remove unused variable last_state from struct t7xx_fsm_ctl.
- Remove unused variable txq_select_times from struct dpmaif_ctrl.
- Replace ETXTBSY with EBUSY.
- Refactor t7xx_dpmaif_rx_buf_alloc() to remove an unneeded allocation.
- Fix potential leak at t7xx_dpmaif_rx_frag_alloc().
- Simplify return value handling at t7xx_dpmaif_rx_start().
- Add a helper to handle the common part of CCCI header initialization.
- Make sure interrupts are enabled during PM resume.
- Add a parameter to t7xx_fsm_append_cmd() to tell if it is in interrupt context.
v3:
- Avoid unneeded ping-pong changes between patches.
- Use t7xx_ prefix in functions.
- Use t7xx_ prefix in generic structs where mtk_ or ccci prefix was used.
- Update Authors/Contributors header.
- Remove skb pools used for control path.
- Remove skb pools used for RX data path.
- Do not use dedicated TX queue for ACK-only packets.
- Remove __packed attribute from GPD structs.
- Remove the infrastructure for test and debug ports.
- Use the skb control buffer to store metadata.
- Get the IP packet type from RX PIT.
- Merge variable declaration and simple assignments.
- Use preferred coding patterns.
- Remove global variables.
- Declare HW facing structure members as little endian.
- Rename goto tags to describe what is going to be done.
- Do not use variable length arrays.
- Remove unneeded blank lines source code and kdoc headers.
- Use C99 initialization format for port-proxy ports.
- Clean up comments.
- Review included headers.
- Better use of 100 column limit.
- Remove unneeded mb() in CLDMA.
- Remove unneeded spin locks and atomics.
- Handle read_poll_timeout error.
- Use dev_err_ratelimited() where required.
- Fix resource leak when requesting IRQs.
- Use generic DEFAULT_TX_QUEUE_LEN instead custom macro.
- Use ETH_DATA_LEN instead of defining WWAN_DEFAULT_MTU.
- Use sizeof() instead of defines when the size of structures is required.
- Remove unneeded code from netdev:
No need to configure HW address length
No need to implement .ndo_change_mtu
Remove random address generation
- Code simplifications by using kernel provided functions and macros such as:
module_pci_driver
PTR_ERR_OR_ZERO
for_each_set_bit
pci_device_is_present
skb_queue_purge
list_prev_entry
__ffs64
v2:
- Replace pdev->driver->name with dev_driver_string(&pdev->dev).
- Replace random_ether_addr() with eth_random_addr().
- Update kernel-doc comment for enum data_policy.
- Indicate the driver is 'Supported' instead of 'Maintained'.
- Fix the Signed-of-by and Co-developed-by tags in the patches.
- Added authors and contributors in the top comment of the src files.
====================
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Adds maintainers and documentation for MediaTek t7xx 5G WWAN modem
device driver.
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Introduce the mechanism to lock/unlock the device 'deep sleep' mode.
When the PCIe link state is L1.2 or L2, the host side still can keep
the device is in D0 state from the host side point of view. At the same
time, if the device's 'deep sleep' mode is unlocked, the device will
go to 'deep sleep' while it is still in D0 state on the host side.
Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Co-developed-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Enables runtime power management callbacks including runtime_suspend
and runtime_resume. Autosuspend is used to prevent overhead by frequent
wake-ups.
Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Co-developed-by: Eliot Lee <eliot.lee@intel.com>
Signed-off-by: Eliot Lee <eliot.lee@intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Implements suspend, resumes, freeze, thaw, poweroff, and restore
`dev_pm_ops` callbacks.
From the host point of view, the t7xx driver is one entity. But, the
device has several modules that need to be addressed in different ways
during power management (PM) flows.
The driver uses the term 'PM entities' to refer to the 2 DPMA and
2 CLDMA HW blocks that need to be managed during PM flows.
When a dev_pm_ops function is called, the PM entities list is iterated
and the matching function is called for each entry in the list.
Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Co-developed-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Creates the Cross Core Modem Network Interface (CCMNI) which implements
the wwan_ops for registration with the WWAN framework, CCMNI also
implements the net_device_ops functions used by the network device.
Network device operations include open, close, start transmission, TX
timeout and change MTU.
Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Co-developed-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Co-developed-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Data Path Modem AP Interface (DPMAIF) HIF layer provides methods
for initialization, ISR, control and event handling of TX/RX flows.
DPMAIF TX
Exposes the 'dmpaif_tx_send_skb' function which can be used by the
network device to transmit packets.
The uplink data management uses a Descriptor Ring Buffer (DRB).
First DRB entry is a message type that will be followed by 1 or more
normal DRB entries. Message type DRB will hold the skb information
and each normal DRB entry holds a pointer to the skb payload.
DPMAIF RX
The downlink buffer management uses Buffer Address Table (BAT) and
Packet Information Table (PIT) rings.
The BAT ring holds the address of skb data buffer for the HW to use,
while the PIT contains metadata about a whole network packet including
a reference to the BAT entry holding the data buffer address.
The driver reads the PIT and BAT entries written by the modem, when
reaching a threshold, the driver will reload the PIT and BAT rings.
Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Co-developed-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Data Path Modem AP Interface (DPMAIF) HW layer provides HW abstraction
for the upper layer (DPMAIF HIF). It implements functions to do the HW
configuration, TX/RX control and interrupt handling.
Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Co-developed-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Adds AT and MBIM ports to the port proxy infrastructure.
The initialization method is responsible for creating the corresponding
ports using the WWAN framework infrastructure. The implemented WWAN port
operations are start, stop, and TX.
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Co-developed-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Control Port implements driver control messages such as modem-host
handshaking, controls port enumeration, and handles exception messages.
The handshaking process between the driver and the modem happens during
the init sequence. The process involves the exchange of a list of
supported runtime features to make sure that modem and host are ready
to provide proper feature lists including port enumeration. Further
features can be enabled and controlled in this handshaking process.
Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Co-developed-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Port-proxy provides a common interface to interact with different types
of ports. Ports export their configuration via `struct t7xx_port` and
operate as defined by `struct port_ops`.
Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Co-developed-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Co-developed-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Registers the t7xx device driver with the kernel. Setup all the core
components: PCIe layer, Modem Host Cross Core Interface (MHCCIF),
modem control operations, modem state machine, and build
infrastructure.
* PCIe layer code implements driver probe and removal.
* MHCCIF provides interrupt channels to communicate events
such as handshake, PM and port enumeration.
* Modem control implements the entry point for modem init,
reset and exit.
* The modem status monitor is a state machine used by modem control
to complete initialization and stop. It is used also to propagate
exception events reported by other components.
Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Co-developed-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Cross Layer DMA (CLDMA) Hardware interface (HIF) enables the control
path of Host-Modem data transfers. CLDMA HIF layer provides a common
interface to the Port Layer.
CLDMA manages 8 independent RX/TX physical channels with data flow
control in HW queues. CLDMA uses ring buffers of General Packet
Descriptors (GPD) for TX/RX. GPDs can represent multiple or single
data buffers (DB).
CLDMA HIF initializes GPD rings, registers ISR handlers for CLDMA
interrupts, and initializes CLDMA HW registers.
CLDMA TX flow:
1. Port Layer write
2. Get DB address
3. Configure GPD
4. Triggering processing via HW register write
CLDMA RX flow:
1. CLDMA HW sends a RX "done" to host
2. Driver starts thread to safely read GPD
3. DB is sent to Port layer
4. Create a new buffer for GPD ring
Note: This patch does not enable compilation since it has dependencies
such as t7xx_pcie_mac_clear_int()/t7xx_pcie_mac_set_int() and
struct t7xx_pci_dev which are added by the core patch.
Signed-off-by: Haijun Liu <haijun.liu@mediatek.com>
Signed-off-by: Chandrashekar Devegowda <chandrashekar.devegowda@intel.com>
Co-developed-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Loic Poulain <loic.poulain@linaro.org>
Reviewed-by: Ilpo Järvinen <ilpo.jarvinen@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Helper to calculate the linear data space in the skb.
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Sergey Ryazanov <ryazanov.s.a@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add macros to get the next or previous entries and wraparound if
needed. For example, calling list_next_entry_circular() on the last
element should return the first element in the list.
Signed-off-by: Ricardo Martinez <ricardo.martinez@linux.intel.com>
Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Dirent events (create/delete/move) are only reported on watched
directory inodes, but in fanotify as well as in legacy inotify, it was
always allowed to set them on non-dir inode, which does not result in
any meaningful outcome.
Until kernel v5.17, dirent events in fanotify also differed from events
"on child" (e.g. FAN_OPEN) in the information provided in the event.
For example, FAN_OPEN could be set in the mask of a non-dir or the mask
of its parent and event would report the fid of the child regardless of
the marked object.
By contrast, FAN_DELETE is not reported if the child is marked and the
child fid was not reported in the events.
Since kernel v5.17, with fanotify group flag FAN_REPORT_TARGET_FID, the
fid of the child is reported with dirent events, like events "on child",
which may create confusion for users expecting the same behavior as
events "on child" when setting events in the mask on a child.
The desired semantics of setting dirent events in the mask of a child
are not clear, so for now, deny this action for a group initialized
with flag FAN_REPORT_TARGET_FID and for the new event FAN_RENAME.
We may relax this restriction in the future if we decide on the
semantics and implement them.
Fixes: d61fd650e9d2 ("fanotify: introduce group flag FAN_REPORT_TARGET_FID")
Fixes: 8cc3b1ccd930 ("fanotify: wire up FAN_RENAME event")
Link: https://lore.kernel.org/linux-fsdevel/20220505133057.zm5t6vumc4xdcnsg@quack3.lan/
Signed-off-by: Amir Goldstein <amir73il@gmail.com>
Signed-off-by: Jan Kara <jack@suse.cz>
Link: https://lore.kernel.org/r/20220507080028.219826-1-amir73il@gmail.com
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When NET_F_F_GRO_FRAGLIST is enabled and bpf_skb_change_proto is used,
check if udp packets and tcp packets are successfully delivered to user
space. If wrong udp packets are delivered, udpgso_bench_rx will exit
with "Initial byte out of range"
Signed-off-by: Maciej enczykowski <maze@google.com>
Signed-off-by: Lina Wang <lina.wang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When clatd starts with ebpf offloaing, and NETIF_F_GRO_FRAGLIST is enable,
several skbs are gathered in skb_shinfo(skb)->frag_list. The first skb's
ipv6 header will be changed to ipv4 after bpf_skb_proto_6_to_4,
network_header\transport_header\mac_header have been updated as ipv4 acts,
but other skbs in frag_list didnot update anything, just ipv6 packets.
udp_queue_rcv_skb will call skb_segment_list to traverse other skbs in
frag_list and make sure right udp payload is delivered to user space.
Unfortunately, other skbs in frag_list who are still ipv6 packets are
updated like the first skb and will have wrong transport header length.
e.g.before bpf_skb_proto_6_to_4,the first skb and other skbs in frag_list
has the same network_header(24)& transport_header(64), after
bpf_skb_proto_6_to_4, ipv6 protocol has been changed to ipv4, the first
skb's network_header is 44,transport_header is 64, other skbs in frag_list
didnot change.After skb_segment_list, the other skbs in frag_list has
different network_header(24) and transport_header(44), so there will be 20
bytes different from original,that is difference between ipv6 header and
ipv4 header. Just change transport_header to be the same with original.
Actually, there are two solutions to fix it, one is traversing all skbs
and changing every skb header in bpf_skb_proto_6_to_4, the other is
modifying frag_list skb's header in skb_segment_list. Considering
efficiency, adopt the second one--- when the first skb and other skbs in
frag_list has different network_header length, restore them to make sure
right udp payload is delivered to user space.
Signed-off-by: Lina Wang <lina.wang@mediatek.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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It fixes memory leak in ring buffer change logic.
When ring buffer size is changed(ethtool -G eth0 rx 4096), sfc driver
works like below.
1. stop all channels and remove ring buffers.
2. allocates new buffer array.
3. allocates rx buffers.
4. start channels.
While the above steps are working, it skips some steps if the channel
doesn't have a ->copy callback function.
Due to ptp channel doesn't have ->copy callback, these above steps are
skipped for ptp channel.
It eventually makes some problems.
a. ptp channel's ring buffer size is not changed, it works only
1024(default).
b. memory leak.
The reason for memory leak is to use the wrong ring buffer values.
There are some values, which is related to ring buffer size.
a. efx->rxq_entries
- This is global value of rx queue size.
b. rx_queue->ptr_mask
- used for access ring buffer as circular ring.
- roundup_pow_of_two(efx->rxq_entries) - 1
c. rx_queue->max_fill
- efx->rxq_entries - EFX_RXD_HEAD_ROOM
These all values should be based on ring buffer size consistently.
But ptp channel's values are not.
a. efx->rxq_entries
- This is global(for sfc) value, always new ring buffer size.
b. rx_queue->ptr_mask
- This is always 1023(default).
c. rx_queue->max_fill
- This is new ring buffer size - EFX_RXD_HEAD_ROOM.
Let's assume we set 4096 for rx ring buffer,
normal channel ptp channel
efx->rxq_entries 4096 4096
rx_queue->ptr_mask 4095 1023
rx_queue->max_fill 4086 4086
sfc driver allocates rx ring buffers based on these values.
When it allocates ptp channel's ring buffer, 4086 ring buffers are
allocated then, these buffers are attached to the allocated array.
But ptp channel's ring buffer array size is still 1024(default)
and ptr_mask is still 1023 too.
So, 3062 ring buffers will be overwritten to the array.
This is the reason for memory leak.
Test commands:
ethtool -G <interface name> rx 4096
while :
do
ip link set <interface name> up
ip link set <interface name> down
done
In order to avoid this problem, it adds ->copy callback to ptp channel
type.
So that rx_queue->ptr_mask value will be updated correctly.
Fixes: 7c236c43b838 ("sfc: Add support for IEEE-1588 PTP")
Signed-off-by: Taehee Yoo <ap420073@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux
Pull parisc architecture fixes from Helge Deller:
"Some reverts of existing patches, which were necessary because of boot
issues due to wrong CPU clock handling and cache issues which led to
userspace segfaults with 32bit kernels. Dave has a whole bunch of
upcoming cache fixes which I then plan to push in the next merge
window.
Other than that just small updates and fixes, e.g. defconfig updates,
spelling fixes, a clocksource fix, boot topology fixes and a fix for
/proc/cpuinfo output to satisfy lscpu"
* tag 'for-5.18/parisc-3' of git://git.kernel.org/pub/scm/linux/kernel/git/deller/parisc-linux:
Revert "parisc: Increase parisc_cache_flush_threshold setting"
parisc: Mark cr16 clock unstable on all SMP machines
parisc: Fix typos in comments
parisc: Change MAX_ADDRESS to become unsigned long long
parisc: Merge model and model name into one line in /proc/cpuinfo
parisc: Re-enable GENERIC_CPU_DEVICES for !SMP
parisc: Update 32- and 64-bit defconfigs
parisc: Only list existing CPUs in cpu_possible_mask
Revert "parisc: Fix patch code locking and flushing"
Revert "parisc: Mark sched_clock unstable only if clocks are not syncronized"
Revert "parisc: Mark cr16 CPU clocksource unstable on all SMP machines"
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git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux
Pull powerpc fixes from Michael Ellerman:
- Fix the DWARF CFI in our VDSO time functions, allowing gdb to
backtrace through them correctly.
- Fix a buffer overflow in the papr_scm driver, only triggerable by
hypervisor input.
- A fix in the recently added QoS handling for VAS (used for
communicating with coprocessors).
Thanks to Alan Modra, Haren Myneni, Kajol Jain, and Segher Boessenkool.
* tag 'powerpc-5.18-4' of git://git.kernel.org/pub/scm/linux/kernel/git/powerpc/linux:
powerpc/papr_scm: Fix buffer overflow issue with CONFIG_FORTIFY_SOURCE
powerpc/vdso: Fix incorrect CFI in gettimeofday.S
powerpc/pseries/vas: Use QoS credits from the userspace
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull x86 fix from Thomas Gleixner:
"A fix and an email address update:
- Prevent FPU state corruption.
The condition in irq_fpu_usable() grants FPU usage when the FPU is
not used in the kernel. That's just wrong as it does not take the
fpregs_lock()'ed regions into account. If FPU usage happens within
such a region from interrupt context, then the FPU state gets
corrupted.
That's a long standing bug, which got unearthed by the recent
changes to the random code.
- Josh wants to use his kernel.org email address"
* tag 'x86-urgent-2022-05-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
x86/fpu: Prevent FPU state corruption
MAINTAINERS: Update Josh Poimboeuf's email address
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull timer fix from Thomas Gleixner:
"A fix and an email address update:
- Mark the NMI safe time accessors notrace to prevent tracer
recursion when they are selected as trace clocks.
- John Stultz has a new email address"
* tag 'timers-urgent-2022-05-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
timekeeping: Mark NMI safe time accessors as notrace
MAINTAINERS: Update email address for John Stultz
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This reverts commit a58e9d0984e8dad53f17ec73ae3c1cc7f8d88151.
Triggers segfaults with 32-bit kernels on PA8500 machines.
Signed-off-by: Helge Deller <deller@gmx.de>
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull irq fix from Thomas Gleixner:
"A fix for the threaded interrupt core.
A quick sequence of request/free_irq() can result in a hang because
the interrupt thread did not reach the thread function and got stopped
in the kthread core already. That leaves a state active counter
arround which makes a invocation of synchronized_irq() on that
interrupt hang forever.
Ensure that the thread reached the thread function in request_irq() to
prevent that"
* tag 'irq-urgent-2022-05-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
genirq: Synchronize interrupt thread startup
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git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip
Pull locking fixlet from Thomas Gleixner:
"Just a email address update for MAINTAINERS and mailmap"
* tag 'locking-urgent-2022-05-08' of git://git.kernel.org/pub/scm/linux/kernel/git/tip/tip:
futex: MAINTAINERS, .mailmap: Update André's email address
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The cr16 interval timers are not synchronized across CPUs, even with just
one dual-core CPU. This becomes visible if the machines have a longer
uptime.
Signed-off-by: Helge Deller <deller@gmx.de>
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Various spelling mistakes in comments.
Detected with the help of Coccinelle.
Signed-off-by: Julia Lawall <Julia.Lawall@inria.fr>
Signed-off-by: Helge Deller <deller@gmx.de>
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Dave noticed that for the 32-bit kernel MAX_ADDRESS should be a ULL,
otherwise this define would become 0:
MAX_ADDRESS (1UL << MAX_ADDRBITS)
It has no real effect on the kernel.
Signed-off-by: Helge Deller <deller@gmx.de>
Noticed-by: John David Anglin <dave.anglin@bell.net>
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The Linux tool "lscpu" shows the double amount of CPUs if we have
"model" and "model name" in two different lines in /proc/cpuinfo.
This change combines the model and the model name into one line.
Signed-off-by: Helge Deller <deller@gmx.de>
Cc: stable@vger.kernel.org
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