- 01 Jun, 2020 2 commits
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Zijun Hu authored
serdev_device_write() is not appropriate at here because serdev_device_write_wakeup() is not used to release completion hold by the former at @write_wakeup member of struct serdev_device_ops. Fix by using serdev_device_write_buf() instead of serdev_device_write(). Signed-off-by:
Zijun Hu <zijuhu@codeaurora.org> Signed-off-by:
Marcel Holtmann <marcel@holtmann.org>
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Zijun Hu authored
Controller ID info got by VSC EDL_PATCH_GETVER is very important, so improve its log level from DEBUG to INFO. Signed-off-by:
Matthias Kaehlcke <mka@chromium.org> Signed-off-by:
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- 29 May, 2020 4 commits
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Zijun Hu authored
Warm reboot can not reset controller qca6390 due to lack of controllable power supply, so causes firmware download failure during enable. Fixed by sending VSC EDL_SOC_RESET to reset qca6390 within added device shutdown implementation. Signed-off-by:
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Sebastian Andrzej Siewior authored
There was a lockdep which led to commit fad003b6 ("Bluetooth: Fix inconsistent lock state with RFCOMM") Lockdep noticed that `sk->sk_lock.slock' was acquired without disabling the softirq while the lock was also used in softirq context. Unfortunately the solution back then was to disable interrupts before acquiring the lock which however made lockdep happy. It would have been enough to simply disable the softirq. Disabling interrupts before acquiring a spinlock_t is not allowed on PREEMPT_RT because these locks are converted to 'sleeping' spinlocks. Use spin_lock_bh() in order to acquire the `sk_lock.slock'. Reported-by:
Luis Claudio R. Goncalves <lclaudio@uudg.org> Reported-by: kbuild test robot <lkp@intel.com> [missing unlock] Signed-off-by:
Sebastian Andrzej Siewior <bigeasy@linutronix.de> Signed-off-by:
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Chuhong Yuan authored
Calls of the functions clk_disable_unprepare() and hci_free_dev() were missing for the exception handling. Thus add the missed function calls together with corresponding jump targets. Fixes: 05582561 ("Bluetooth: btmtkuart: add an implementation for clock osc property") Signed-off-by:
Chuhong Yuan <hslester96@gmail.com> Signed-off-by:
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Zijun Hu authored
@dev parameter of qca_suspend()/qca_resume() represents serdev_device, but it is mistook for hci_dev and causes succedent unexpected memory access. Fix by taking @dev as serdev_device. Fixes: 41d5b25f ("Bluetooth: hci_qca: add PM support") Signed-off-by:
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- 28 May, 2020 1 commit
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Azamat H. Hackimov authored
Added new Broadcom device BCM4350C5, changed BCM4354A2 to BCM4356A2. Based on Broadcom Windows drivers 001.003.015 should be BCM4356A2. I have user report that firmware name is misplaced (https://github.com/winterheart/broadcom-bt-firmware/issues/3). Signed-off-by:
Azamat H. Hackimov <azamat.hackimov@gmail.com> Signed-off-by:
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- 20 May, 2020 3 commits
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Abhishek Pandit-Subedi authored
hdev is always allocated and not only when power control is required. Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
Abhishek Pandit-Subedi <abhishekpandit@chromium.org> Signed-off-by:
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Luiz Augusto von Dentz authored
EIR flags should just hint if SSP may be supported but we shall verify this with use of the actual features as the SSP bits may be disabled in the lower layers which would result in legacy authentication to be used. Signed-off-by:
Luiz Augusto von Dentz <luiz.von.dentz@intel.com> Signed-off-by:
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Luiz Augusto von Dentz authored
This makes hci_encrypt_cfm calls hci_connect_cfm in case the connection state is BT_CONFIG so callers don't have to check the state. Signed-off-by:
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- 18 May, 2020 4 commits
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Abhishek Pandit-Subedi authored
WCN3991 supports transparent WBS (host encoded mSBC). Add a flag to the device match data to show WBS is supported. This requires the matching firmware for WCN3991 in linux-firmware: 1a8b0dc00f77 (qca: Enable transparent WBS for WCN3991) Signed-off-by: -
Hsin-Yu Chao authored
Bluetooth PTS test case HFP/AG/ACC/BI-12-I accepts SCO connection with invalid parameter at the first SCO request expecting AG to attempt another SCO request with the use of "safe settings" for given codec, base on section 5.7.1.2 of HFP 1.7 specification. This patch addresses it by adding "Invalid LMP Parameters" (0x1e) to the SCO fallback case. Verified with below log: < HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17 Handle: 256 Transmit bandwidth: 8000 Receive bandwidth: 8000 Max latency: 13 Setting: 0x0003 Input Coding: Linear Input Data Format: 1's complement Input Sample Size: 8-bit # of bits padding at MSB: 0 Air Coding Format: Transparent Data Retransmission effort: Optimize for link quality (0x02) Packet type: 0x0380 3-EV3 may not be used 2-EV5 may not be used 3-EV5 may not be used > HCI Event: Command Status (0x0f) plen 4 Setup Synchronous Connection (0x01|0x0028) ncmd 1 Status: Success (0x00) > HCI Event: Number of Completed Packets (0x13) plen 5 Num handles: 1 Handle: 256 Count: 1 > HCI Event: Max Slots Change (0x1b) plen 3 Handle: 256 Max slots: 1 > HCI Event: Synchronous Connect Complete (0x2c) plen 17 Status: Invalid LMP Parameters / Invalid LL Parameters (0x1e) Handle: 0 Address: 00:1B:DC:F2:21:59 (OUI 00-1B-DC) Link type: eSCO (0x02) Transmission interval: 0x00 Retransmission window: 0x02 RX packet length: 0 TX packet length: 0 Air mode: Transparent (0x03) < HCI Command: Setup Synchronous Connection (0x01|0x0028) plen 17 Handle: 256 Transmit bandwidth: 8000 Receive bandwidth: 8000 Max latency: 8 Setting: 0x0003 Input Coding: Linear Input Data Format: 1's complement Input Sample Size: 8-bit # of bits padding at MSB: 0 Air Coding Format: Transparent Data Retransmission effort: Optimize for link quality (0x02) Packet type: 0x03c8 EV3 may be used 2-EV3 may not be used 3-EV3 may not be used 2-EV5 may not be used 3-EV5 may not be used > HCI Event: Command Status (0x0f) plen 4 Setup Synchronous Connection (0x01|0x0028) ncmd 1 Status: Success (0x00) > HCI Event: Max Slots Change (0x1b) plen 3 Handle: 256 Max slots: 5 > HCI Event: Max Slots Change (0x1b) plen 3 Handle: 256 Max slots: 1 > HCI Event: Synchronous Connect Complete (0x2c) plen 17 Status: Success (0x00) Handle: 257 Address: 00:1B:DC:F2:21:59 (OUI 00-1B-DC) Link type: eSCO (0x02) Transmission interval: 0x06 Retransmission window: 0x04 RX packet length: 30 TX packet length: 30 Air mode: Transparent (0x03) Signed-off-by:Hsin-Yu Chao <hychao@chromium.org> Signed-off-by:
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Łukasz Rymanowski authored
Security Mode 1 level 4, force us to use have key size 16 octects long. This patch adds check for that. This is required for the qualification test GAP/SEC/SEM/BI-10-C Logs from test when ATT is configured with sec level BT_SECURITY_FIPS < ACL Data TX: Handle 3585 flags 0x00 dlen 11 #28 [hci0] 3.785965 SMP: Pairing Request (0x01) len 6 IO capability: DisplayYesNo (0x01) OOB data: Authentication data not present (0x00) Authentication requirement: Bonding, MITM, SC, No Keypresses (0x0d) Max encryption key size: 16 Initiator key distribution: EncKey Sign (0x05) Responder key distribution: EncKey IdKey Sign (0x07) > ACL Data RX: Handle 3585 flags 0x02 dlen 11 #35 [hci0] 3.883020 SMP: Pairing Response (0x02) len 6 IO capability: DisplayYesNo (0x01) OOB data: Authentication data not present (0x00) Authentication requirement: Bonding, MITM, SC, No Keypresses (0x0d) Max encryption key size: 7 Initiator key distribution: EncKey Sign (0x05) Responder key distribution: EncKey IdKey Sign (0x07) < ACL Data TX: Handle 3585 flags 0x00 dlen 6 #36 [hci0] 3.883136 SMP: Pairing Failed (0x05) len 1 Reason: Encryption key size (0x06) Signed-off-by:Łukasz Rymanowski <lukasz.rymanowski@codecoup.pl> Signed-off-by:
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Gustavo A. R. Silva authored
The current codebase makes use of the zero-length array language extension to the C90 standard, but the preferred mechanism to declare variable-length types such as these ones is a flexible array member[1][2], introduced in C99: struct foo { int stuff; struct boo array[]; }; By making use of the mechanism above, we will get a compiler warning in case the flexible array does not occur last in the structure, which will help us prevent some kind of undefined behavior bugs from being inadvertently introduced[3] to the codebase from now on. Also, notice that, dynamic memory allocations won't be affected by this change: "Flexible array members have incomplete type, and so the sizeof operator may not be applied. As a quirk of the original implementation of zero-length arrays, sizeof evaluates to zero."[1] sizeof(flexible-array-member) triggers a warning because flexible array members have incomplete type[1]. There are some instances of code in which the sizeof operator is being incorrectly/erroneously applied to zero-length arrays and the result is zero. Such instances may be hiding some bugs. So, this work (flexible-array member conversions) will also help to get completely rid of those sorts of issues. This issue was found with the help of Coccinelle. [1] https://gcc.gnu.org/onlinedocs/gcc/Zero-Length.html [2] https://github.com/KSPP/linux/issues/21 [3] commit 76497732 ("cxgb3/l2t: Fix undefined behaviour") Signed-off-by:Gustavo A. R. Silva <gustavoars@kernel.org> Signed-off-by:
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- 17 May, 2020 10 commits
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John Hubbard authored
This code was using get_user_pages_fast(), in a "Case 2" scenario (DMA/RDMA), using the categorization from [1]. That means that it's time to convert the get_user_pages_fast() + put_page() calls to pin_user_pages_fast() + unpin_user_pages() calls. There is some helpful background in [2]: basically, this is a small part of fixing a long-standing disconnect between pinning pages, and file systems' use of those pages. [1] Documentation/core-api/pin_user_pages.rst [2] "Explicit pinning of user-space pages": https://lwn.net/Articles/807108/ Cc: David S. Miller <davem@davemloft.net> Cc: Jakub Kicinski <kuba@kernel.org> Cc: netdev@vger.kernel.org Cc: linux-rdma@vger.kernel.org Cc: rds-devel@oss.oracle.com Signed-off-by:John Hubbard <jhubbard@nvidia.com> Signed-off-by:
David S. Miller <davem@davemloft.net>
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David S. Miller authored
Florian Westphal says: ==================== mptcp: do not block on subflow socket This series reworks mptcp_sendmsg logic to avoid blocking on the subflow socket. It does so by removing the wait loop from mptcp_sendmsg_frag helper. In order to do that, it moves prerequisites that are currently handled in mptcp_sendmsg_frag (and cause it to wait until they are met, e.g. frag cache refill) into the callers. The worker can just reschedule in case no subflow socket is ready, since it can't wait -- doing so would block other work items and doesn't make sense anyway because we should not (re)send data in case resources are already low. The sendmsg path can use the existing wait logic until memory becomes available. Because large send requests can result in multiple mptcp_sendmsg_frag calls from mptcp_sendmsg, we may need to restart the socket lookup in case subflow can't accept more data or memory is low. Doing so blocks on the mptcp socket, and existing wait handling releases the msk lock while blocking. Lastly, no need to use GFP_ATOMIC for extension allocation: extend __skb_ext_alloc with gfp_t arg instead of hard-coded ATOMIC and then relax the allocation constraints for mptcp case: those requests occur in process context. ==================== Signed-off-by: -
Florian Westphal authored
mptcp calls this from the transmit side, from process context. Allow a sleeping allocation instead of unconditional GFP_ATOMIC. Acked-by:
Paolo Abeni <pabeni@redhat.com> Signed-off-by:
Florian Westphal <fw@strlen.de> Signed-off-by:
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Florian Westphal authored
previous patches made sure we only call into this function when these prerequisites are met, so no need to wait on the subflow socket anymore. Closes: https://github.com/multipath-tcp/mptcp_net-next/issues/7Acked-by:
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Florian Westphal authored
The mptcp_sendmsg_frag helper contains a loop that will wait on the subflow sk. It seems preferrable to only wait in mptcp_sendmsg() when blocking io is requested. mptcp_sendmsg already has such a wait loop that is used when no subflow socket is available for transmission. This is another preparation patch that makes sure we call mptcp_sendmsg_frag only if the page frag cache has been refilled. Followup patch will remove the wait loop from mptcp_sendmsg_frag(). The retransmit worker doesn't need to do this refill as it won't transmit new mptcp-level data. Acked-by:
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Florian Westphal authored
The mptcp_sendmsg_frag helper contains a loop that will wait on the subflow sk. It seems preferrable to only wait in mptcp_sendmsg() when blocking io is requested. mptcp_sendmsg already has such a wait loop that is used when no subflow socket is available for transmission. This is a preparation patch that makes sure we call mptcp_sendmsg_frag only if a skb extension has been allocated. Moreover, such allocation currently uses GFP_ATOMIC while it could use sleeping allocation instead. Followup patches will remove the wait loop from mptcp_sendmsg_frag() and will allow to do a sleeping allocation for the extension. Acked-by:
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Florian Westphal authored
The transmit loop continues to xmit new data until an error is returned or all data was transmitted. For the blocking i/o case, this means that tcp_sendpages() may block on the subflow until more space becomes available, i.e. we end up sleeping with the mptcp socket lock held. Instead we should check if a different subflow is ready to be used. This restarts the subflow sk lookup when the tx operation succeeded and the tcp subflow can't accept more data or if tcp_sendpages indicates -EAGAIN on a blocking mptcp socket. In that case we also need to set the NOSPACE bit to make sure we get notified once memory becomes available. In case all subflows are busy, the existing logic will wait until a subflow is ready, releasing the mptcp socket lock while doing so. The mptcp worker already sets DONTWAIT, so no need to make changes there. v2: * set NOSPACE bit * add a comment to clarify that mptcp-sk sndbuf limits need to be checked as well. Signed-off-by:
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Florian Westphal authored
Its not enough to check for available tcp send space. We also hold on to transmitted data for mptcp-level retransmits. Right now we will send more and more data if the peer can ack data at the tcp level fast enough, since that frees up tcp send buffer space. But we also need to check that data was acked and reclaimed at the mptcp level. Therefore add needed check in mptcp_sendmsg, flush tcp data and wait until more mptcp snd space becomes available if we are over the limit. Before we wait for more data, also make sure we start the retransmit timer if we ran out of sndbuf space. Otherwise there is a very small chance that we wait forever: * receiver is waiting for data * sender is blocked because mptcp socket buffer is full * at tcp level, all data was acked * mptcp-level snd_una was not updated, because last ack that acknowledged the last data packet carried an older MPTCP-ack. Restarting the retransmit timer avoids this problem: if TCP subflow is idle, data is retransmitted from the RTX queue. New data will make the peer send a new, updated MPTCP-Ack. Signed-off-by:
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Florian Westphal authored
Paolo noticed that ssk_check_wmem() has same pattern, so add/use common helper for both places. Suggested-by:
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David Ahern authored
The 'pref medium' attribute was moved in iproute2 to be near the prefix which is where it applies versus after the last nexthop. The nexthop tests were updated to drop the string from route checking, but it crept in again with the compat tests. Fixes: 4dddb5be ("selftests: net: add new testcases for nexthop API compat mode sysctl") Signed-off-by:
David Ahern <dsahern@gmail.com> Cc: Roopa Prabhu <roopa@cumulusnetworks.com> Signed-off-by:
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- 16 May, 2020 16 commits
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David S. Miller authored
Alex Elder says: ==================== net: ipa: sc7180 suspend/resume This series permits suspend/resume to work for the IPA driver on the Qualcomm SC7180 SoC. The IPA version on this SoC requires interrupts to be enabled when the suspend and resume callbacks are made, and the first patch moves away from using the noirq variants. The second patch fixes a problem with resume that occurs because pending interrupts were being cleared before starting a channel. ==================== Signed-off-by: -
Alex Elder authored
In gsi_channel_start() there is harmless-looking comment "Clear the channel's event ring interrupt in case it's pending". The intent was to avoid getting spurious interrupts when first bringing up a channel. However we now use channel stop/start to implement suspend and resume, and an interrupt pending at the time we resume is actually something we don't want to ignore. The very first time we bring up the channel we do not expect an interrupt to be pending, and even if it were, the effect would simply be to schedule NAPI on that channel, which would find nothing to do, which is not a problem. Stop clearing any pending IEOB interrupt in gsi_channel_start(). That leaves one caller of the trivial function gsi_isr_ieob_clear(). Get rid of that function and just open-code it in gsi_isr_ieob() instead. This fixes a problem where suspend/resume IPA v4.2 would get stuck when resuming after a suspend. Signed-off-by:
Alex Elder <elder@linaro.org> Signed-off-by:
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Alex Elder authored
Use the suspend and resume callbacks rather than suspend_noirq and resume_noirq. With IPA v4.2, we use the CHANNEL_STOP command to implement a suspend, and without interrupts enabled, that command won't complete. Signed-off-by:
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David S. Miller authored
Ido Schimmel says: ==================== mlxsw: Reorganize trap data This patch set does not include any functional changes. It merely reworks the internal storage of traps, trap groups and trap policers in mlxsw to each use a single array. These changes allow us to get rid of the multiple arrays we currently have for traps, which make the trap data easier to validate and extend with more per-trap information in the future. It will also allow us to more easily add per-ASIC traps in future submissions. Last two patches include minor changes to devlink-trap selftests. Tested with existing devlink-trap selftests. ==================== Signed-off-by: -
Ido Schimmel authored
It can be derived dynamically from the trap's name, so drop it. Signed-off-by:
Ido Schimmel <idosch@mellanox.com> Reviewed-by:
Jiri Pirko <jiri@mellanox.com> Signed-off-by:
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Ido Schimmel authored
One blank line is enough. Signed-off-by:
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Ido Schimmel authored
Each trap registered with devlink is mapped to one or more Rx listeners. These listeners allow the switch driver (e.g., mlxsw_spectrum) to register a function that is called when a packet is received (trapped) for a specific reason. Currently, three arrays are used to describe the mapping between the logical devlink traps and the Rx listeners. Instead, get rid of these arrays and store all the information in one array that is easier to validate and extend with more per-trap information. Signed-off-by:
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Ido Schimmel authored
Use one array to store all the information about all the trap groups instead of hard coding it in code. This will be used in future patches to disable certain functionality (e.g., policer binding) on a trap group basis. Signed-off-by:
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Ido Schimmel authored
Instead of maintaining an array of policers and a linked list, only maintain an array. Signed-off-by:
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Ido Schimmel authored
'struct mlxsw_sp_trap_policer_item' is only used in one file, so move it there. Signed-off-by:
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Heiner Kallweit authored
After having switched to devm_mdiobus_register() also this remaining call to mdiobus_unregister() can be removed. Signed-off-by:
Heiner Kallweit <hkallweit1@gmail.com> Signed-off-by:
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David S. Miller authored
Jakub Kicinski says: ==================== ethtool: set_channels: add a few more checks There seems to be a few more things we can check in the core before we call drivers' ethtool_ops->set_channels. Adding the checks to the core simplifies the drivers. This set only includes changes to the NFP driver as an example. There is a small risk in the first patch that someone actually purposefully accepts a strange configuration without RX or TX channels, but I couldn't find such a driver in the tree. ==================== Signed-off-by: -
Jakub Kicinski authored
Don't call drivers if nothing changed. Netlink code already contains this logic. Signed-off-by:
Jakub Kicinski <kuba@kernel.org> Reviewed-by:
Michal Kubecek <mkubecek@suse.cz> Signed-off-by:
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Jakub Kicinski authored
Core will now perform this check. Signed-off-by:
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Jakub Kicinski authored
Having a channel config with no ability to RX or TX traffic is clearly wrong. Check for this in the core so the drivers don't have to. Signed-off-by:
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Christoph Paasch authored
RFC8684 allows to send 32-bit DATA_ACKs as long as the peer is not sending 64-bit data-sequence numbers. The 64-bit DSN is only there for extreme scenarios when a very high throughput subflow is combined with a long-RTT subflow such that the high-throughput subflow wraps around the 32-bit sequence number space within an RTT of the high-RTT subflow. It is thus a rare scenario and we should try to use the 32-bit DATA_ACK instead as long as possible. It allows to reduce the TCP-option overhead by 4 bytes, thus makes space for an additional SACK-block. It also makes tcpdumps much easier to read when the DSN and DATA_ACK are both either 32 or 64-bit. Signed-off-by:
Christoph Paasch <cpaasch@apple.com> Reviewed-by:
Matthieu Baerts <matthieu.baerts@tessares.net> Signed-off-by:
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