- 21 Apr, 2021 7 commits
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Guo-Feng Fan authored
Use "cat dm_cap" to show all features; where, prefix +/- means feature is enabled/disabled: $ cat dm_cap DM capability 0x00000002 ( 1) +TXGAPK To control dm_cap: use "echo +1 > dm_cap" to enable TXGAPK use "echo -1 > dm_cap" to disable TXGAPK Below is an example to disable TXGAPK. $ echo -1 > dm_cap $ cat dm_cap DM capability 0x00000000 ( 1) -TXGAPK Below is an example to show TXGAPK status $ echo 1 > dm_cap; cat dm_cap ( 1) +TXGAPK path 0: 0x56 = 0x88c89 [TXGAPK] offset 1 0 [TXGAPK] offset 1 1 [TXGAPK] offset 1 2 [TXGAPK] offset 1 3 [TXGAPK] offset 0 4 [TXGAPK] offset 0 5 [TXGAPK] offset 0 6 [TXGAPK] offset 0 7 [TXGAPK] offset 0 8 [TXGAPK] offset 0 9 path 1: 0x56 = 0x89c89 [TXGAPK] offset 1 0 [TXGAPK] offset 1 1 [TXGAPK] offset 1 2 [TXGAPK] offset 1 3 [TXGAPK] offset 0 4 [TXGAPK] offset 0 5 [TXGAPK] offset 0 6 [TXGAPK] offset 0 7 [TXGAPK] offset 0 8 [TXGAPK] offset 0 9 Signed-off-by:
Guo-Feng Fan <vincent_fann@realtek.com> Signed-off-by:
Ping-Ke Shih <pkshih@realtek.com> Signed-off-by:
Kalle Valo <kvalo@codeaurora.org> Link: https://lore.kernel.org/r/20210419003748.3224-4-pkshih@realtek.com
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Guo-Feng Fan authored
gap-k is a calibration mechanism to eliminate power gaps between two nearly rate groups. This mechanism improves performance in long range test by applying proper power value to those rate groups which have nonlinear power gap. Signed-off-by:
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Guo-Feng Fan authored
This patch doesn't change logic at all, just a refactor patch. 1. Move BIT MASK and BIT definition along with the register definition 2. Remove redundant definition 3. Align macros with Tab key Signed-off-by:
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Loic Poulain authored
The mhi_wwan_rx_budget_dec function is supposed to return true if RX buffer budget has been successfully decremented, allowing to queue a new RX buffer for transfer. However the current implementation is broken when RX budget is '1', in which case budget is decremented but false is returned, preventing to requeue one buffer, and leading to RX buffer starvation. Fixes: fa588eba ("net: Add Qcom WWAN control driver") Signed-off-by:
Loic Poulain <loic.poulain@linaro.org> Signed-off-by:
David S. Miller <davem@davemloft.net>
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Michael Walle authored
The commit c329e5af ("net: phy: at803x: select correct page on config init") selects the copper page during probe. This fails if the copper page was already selected. In this case, the value of the copper page (which is 1) is propagated through phy_restore_page() and is finally returned for at803x_probe(). Fix it, by just using the at803x_page_write() directly. Also in case of an error, the regulator is not disabled and leads to a WARN_ON() when the probe fails. This couldn't happen before, because at803x_parse_dt() was the last call in at803x_probe(). It is hard to see, that the parse_dt() actually enables the regulator. Thus move the regulator_enable() to the probe function and undo it in case of an error. Fixes: c329e5af ("net: phy: at803x: select correct page on config init") Signed-off-by:
Michael Walle <michael@walle.cc> Reviewed-by:
David Bauer <mail@david-bauer.net> Signed-off-by:
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Colin Ian King authored
The variable err is being initialized with a value that is never read and it is being updated later with a new value. The initialization is redundant and can be removed Addresses-Coverity: ("Unused value") Signed-off-by:Colin Ian King <colin.king@canonical.com> Signed-off-by:
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Eric Dumazet authored
KASAN/syzbot had 4 reports, one of them being: BUG: KASAN: slab-out-of-bounds in memcpy include/linux/fortify-string.h:191 [inline] BUG: KASAN: slab-out-of-bounds in page_to_skb+0x5cf/0xb70 drivers/net/virtio_net.c:480 Read of size 12 at addr ffff888014a5f800 by task systemd-udevd/8445 CPU: 0 PID: 8445 Comm: systemd-udevd Not tainted 5.12.0-rc8-next-20210419-syzkaller #0 Hardware name: Google Google Compute Engine/Google Compute Engine, BIOS Google 01/01/2011 Call Trace: <IRQ> __dump_stack lib/dump_stack.c:79 [inline] dump_stack+0x141/0x1d7 lib/dump_stack.c:120 print_address_description.constprop.0.cold+0x5b/0x2f8 mm/kasan/report.c:233 __kasan_report mm/kasan/report.c:419 [inline] kasan_report.cold+0x7c/0xd8 mm/kasan/report.c:436 check_region_inline mm/kasan/generic.c:180 [inline] kasan_check_range+0x13d/0x180 mm/kasan/generic.c:186 memcpy+0x20/0x60 mm/kasan/shadow.c:65 memcpy include/linux/fortify-string.h:191 [inline] page_to_skb+0x5cf/0xb70 drivers/net/virtio_net.c:480 receive_mergeable drivers/net/virtio_net.c:1009 [inline] receive_buf+0x2bc0/0x6250 drivers/net/virtio_net.c:1119 virtnet_receive drivers/net/virtio_net.c:1411 [inline] virtnet_poll+0x568/0x10b0 drivers/net/virtio_net.c:1516 __napi_poll+0xaf/0x440 net/core/dev.c:6962 napi_poll net/core/dev.c:7029 [inline] net_rx_action+0x801/0xb40 net/core/dev.c:7116 __do_softirq+0x29b/0x9fe kernel/softirq.c:559 invoke_softirq kernel/softirq.c:433 [inline] __irq_exit_rcu+0x136/0x200 kernel/softirq.c:637 irq_exit_rcu+0x5/0x20 kernel/softirq.c:649 common_interrupt+0xa4/0xd0 arch/x86/kernel/irq.c:240 Fixes: fb32856b ("virtio-net: page_to_skb() use build_skb when there's sufficient tailroom") Signed-off-by:
Eric Dumazet <edumazet@google.com> Reported-by:
syzbot <syzkaller@googlegroups.com> Reported-by:
Guenter Roeck <linux@roeck-us.net> Reported-by:
Mat Martineau <mathew.j.martineau@linux.intel.com> Cc: Xuan Zhuo <xuanzhuo@linux.alibaba.com> Cc: Jason Wang <jasowang@redhat.com> Cc: "Michael S. Tsirkin" <mst@redhat.com> Cc: virtualization@lists.linux-foundation.org Acked-by:
Michael S. Tsirkin <mst@redhat.com> Signed-off-by:
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- 20 Apr, 2021 33 commits
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Radu Pirea (NXP OSS) authored
Fix phase offset calculation. Signed-off-by:
Radu Pirea (NXP OSS) <radu-nicolae.pirea@oss.nxp.com> Signed-off-by:
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Michael Walle authored
Now that enetc supports flow control we have to make sure the settings in the IERB are correct. Therefore, we actually depend on the enetc-ierb module. Previously it was possible that this module was disabled while the enetc was enabled. Fix it by automatically select the enetc-ierb module. Fixes: e7d48e5f ("net: enetc: add a mini driver for the Integrated Endpoint Register Block") Signed-off-by:
Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by:
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Eric Dumazet authored
build_skb() is supposed to be followed by skb_reserve(skb, NET_IP_ALIGN), so that IP headers are word-aligned. (Best practice is to reserve NET_IP_ALIGN+NET_SKB_PAD, but the NET_SKB_PAD part is only a performance optimization if tunnel encaps are added.) Unfortunately virtio_net has not provisioned this reserve. We can only use build_skb() for arches where NET_IP_ALIGN == 0 We might refine this later, with enough testing. Fixes: fb32856b ("virtio-net: page_to_skb() use build_skb when there's sufficient tailroom") Signed-off-by:
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Loic Poulain authored
bit operation helpers such as test_bit, clear_bit, etc take bit position as parameter and not value. Current usage causes double shift => BIT(BIT(0)). Fix that in wwan_core and mhi_wwan_ctrl. Fixes: 9a44c1cc ("net: Add a WWAN subsystem") Reported-by:
Dan Carpenter <dan.carpenter@oracle.com> Signed-off-by:
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David S. Miller authored
Tobias Waldekranz says: ==================== net: dsa: Allow default tag protocol to be overridden from DT This is a continuation of the work started in this patch: https://lore.kernel.org/netdev/20210323102326.3677940-1-tobias@waldekranz.com/ In addition to the mv88e6xxx support to dynamically change the protocol, it is now possible to override the protocol from the device tree. This means that when a board vendor finds an incompatibility, they can specify a working protocol in the DT, and users will not have to worry about it. Some background information: In a system using an NXP T1023 SoC connected to a 6390X switch, we noticed that TO_CPU frames where not reaching the CPU. This only happened on hardware port 8. Looking at the DSA master interface (dpaa-ethernet) we could see that an Rx error counter was bumped at the same rate. The logs indicated a parser error. It just so happens that a TO_CPU coming in on device 0, port 8, will result in the first two bytes of the DSA tag being one of: 00 40 00 44 00 46 My guess was that since these values looked like 802.3 length fields, the controller's parser would signal an error if the frame length did not match what was in the header. This was later confirmed using two different workarounds provided by Vladimir. Unfortunately these either bypass or ignore the hardware parser and thus robs working combinations of the ability to do RSS and other nifty things. It was therefore decided to go with the option of a DT override. v1 -> v2: - Fail if the device does not support changing protocols instead of falling back to the default. (Andrew) - Only call change_tag_protocol on CPU ports. (Andrew/Vladimir) - Only allow changing the protocol on chips that have at least "undocumented" level of support for EDSA. (Andrew). - List the supported protocols in the binding documentation. I opted for only listing the protocols that I have tested. As more people test their drivers, they can add them. (Rob) v2 -> v3: - Rename "dsa,tag-protocol" -> "dsa-tag-protocol". (Rob) - Some cleanups to 4/5. (Vladimir) - Add a comment detailing how tree/driver agreement on the tag protocol is enforced. (Vladimir). ==================== Signed-off-by:
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Tobias Waldekranz authored
The 'dsa-tag-protocol' is used to force a switch tree to use a particular tag protocol, typically because the Ethernet controller that it is connected to is not compatible with the default one. Signed-off-by:
Tobias Waldekranz <tobias@waldekranz.com> Signed-off-by:
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Tobias Waldekranz authored
Some combinations of tag protocols and Ethernet controllers are incompatible, and it is hard for the driver to keep track of these. Therefore, allow the device tree author (typically the board vendor) to inform the driver of this fact by selecting an alternate protocol that is known to work. Signed-off-by:
Vladimir Oltean <olteanv@gmail.com> Signed-off-by:
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Tobias Waldekranz authored
Previously DSA ports were also included, on the assumption that the protocol used by the CPU port had to the matched throughout the entire tree. As there is not yet any consumer in need of this, drop the call. Signed-off-by:
Florian Fainelli <f.fainelli@gmail.com> Signed-off-by:
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Tobias Waldekranz authored
For devices that supports both regular and Ethertyped DSA tags, allow the user to change the protocol. Additionally, because there are ethernet controllers that do not handle regular DSA tags in all cases, also allow the protocol to be changed on devices with undocumented support for EDSA. But, in those cases, make sure to log the fact that an undocumented feature has been enabled. Signed-off-by:
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Tobias Waldekranz authored
All devices are capable of using regular DSA tags. Support for Ethertyped DSA tags sort into three categories: 1. No support. Older chips fall into this category. 2. Full support. Datasheet explicitly supports configuring the CPU port to receive FORWARDs with a DSA tag. 3. Undocumented support. Datasheet lists the configuration from category 2 as "reserved for future use", but does empirically behave like a category 2 device. So, instead of listing the one true protocol that should be used by a particular chip, specify the level of support for EDSA (support for regular DSA is implicit on all chips). As before, we use EDSA for all chips that fully supports it. In upcoming changes, we will use this information to support dynamically changing the tag protocol. Signed-off-by:
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David S. Miller authored
Merge tag 'mac80211-next-for-net-next-2021-04-20' of git://git.kernel.org/pub/scm/linux/kernel/git/jberg/mac80211-next Johannes Berg says: ==================== Another set of updates, all over the map: * set sk_pacing_shift for 802.3->802.11 encap offload * some monitor support for 802.11->802.3 decap offload * HE (802.11ax) spec updates * userspace API for TDLS HE support * along with various other small features, cleanups and fixups ==================== Signed-off-by:
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David S. Miller authored
Petr Machata says: ==================== mlxsw: Refactor qdisc offload Currently, mlxsw admits for offload a suitable root qdisc, and its children. Thus up to two levels of hierarchy are offloaded. Often, this is enough: one can configure TCs with RED and TCs with a shaper, and can even see counters for each TC by looking at a qdisc at a sufficiently shallow position. While simple, the system has obvious shortcomings. It is not possible to configure both RED and shaping on one TC. It is not possible to place a PRIO below root TBF, which would then be offloaded as port shaper. FIFOs are only offloaded at root or directly below, which is confusing to users, because RED and TBF of course have their own FIFO. This patchset is a step towards the end goal of allowing more comprehensive qdisc tree offload and cleans up the qdisc offload code. - Patches #1-#4 contain small cleanups. - Up until now, since mlxsw offloaded only a very simple qdisc configurations, basically all bookkeeping was done using one container for the root qdisc, and 8 containers for its children. Patches #5, #6, #8 and #9 gradually introduce a more dynamic structure, where parent-child relationships are tracked directly at qdiscs, instead of being implicit. - This tree management assumes only one qdisc is created at a time. In FIFO handlers, this condition was enforced simply by asserting RTNL lock. But instead of furthering this RTNL dependence, patch #7 converts the whole qdisc offload logic to a per-port mutex. - Patch #10 adds a selftest. ==================== Signed-off-by: -
Petr Machata authored
There was a bug introduced during the rework which cause non-zero backlog being stuck at ETS. Introduce a selftest that would have caught the issue earlier. Signed-off-by:
Petr Machata <petrm@nvidia.com> Reviewed-by:
Ido Schimmel <idosch@nvidia.com> Signed-off-by:
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Petr Machata authored
mlxsw used to hold an array of qdiscs indexed by the TC number. In the previous patch, it was changed to allocate child qdiscs dynamically, and they are now indexed by band number. Follow suit with the array of future FIFOs. Signed-off-by:
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Petr Machata authored
Instead of keeping qdiscs in globally-preallocated arrays, introduce a per-qdisc-kind value num_classes, and then allocate the necessary child qdiscs (if any) based on that value. Since now dynamic allocation is involved, mlxsw_sp_qdisc_replace() gets messy enough that it is worth it to split it to two cases: a new qdisc allocation and a change of existing qdisc. (Note that the change also includes what TC formally calls replace, if the qdisc kind is the same.) Signed-off-by:
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Petr Machata authored
The FIFO handler currently guards accesses to the future FIFO tracking by asserting RTNL. In the future, the changes to the qdisc state will be more thorough, so other qdiscs will need this guarding is as well. In order to not further the RTNL infestation, instead convert to a custom lock that will guard accesses to the qdisc state. Signed-off-by:
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Petr Machata authored
mlxsw currently allows a two-level structure of qdiscs: the root and possibly a number of children. In order to support offloading more general qdisc trees, introduce to struct mlxsw_sp_qdisc a pointer to child qdiscs. Refer to the child qdiscs through this pointer, instead of going through the tclass_qdiscs in qdisc_state. Additionally introduce a field num_classes, which holds number of given qdisc's children. Also introduce a generic function for walking qdisc trees. Rewrite mlxsw_sp_qdisc_find() and _find_by_handle() to use the generic walker. For now, keep the qdisc_state.tclass_qdisc, and just point root_qdiscs's children to this array. Following patches will make the allocation dynamic. Signed-off-by:
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Petr Machata authored
When a qdisc is removed, it is necessary to update the backlog value at its parent--unless the qdisc is at root position. RED, TBF and FIFO all do that, each separately. Since all of them need to do this, just promote the operation directly to mlxsw_sp_qdisc_destroy(), instead of deferring it to individual destructors. Since FIFO dtor thus becomes trivial, remove it. Add struct mlxsw_sp_qdisc.parent to point at the parent qdisc. This will be handy later as deeper structures are offloaded. Use the parent qdisc to find the chain of parents whose backlog value needs to be updated. Signed-off-by:
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Petr Machata authored
tclass_num is just a number, a value that would be ordinarily passed around as an int. (Which is unlike a u8 prio_bitmap.) In several places, tclass_num already is an int. Convert the remaining instances. Signed-off-by:
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Petr Machata authored
The function mlxsw_sp_qdisc_compare() is invoked a couple lines above this check, which will bounce any requests where this condition does not hold. Therefore drop it. Signed-off-by:
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Petr Machata authored
The purpose of this function is to filter out events that are related to qdiscs that are not offloaded, or are not offloaded anymore. But the function is unnecessarily thorough: - mlxsw_sp_qdisc pointer is never NULL in the context where it is called - Two qdiscs with the same handle will never have different types. Even when replacing one qdisc with another in the same class, Linux will not permit handle reuse unless the qdisc type also matches. Simplify the function by omitting these two unnecessary conditions. Signed-off-by:
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Petr Machata authored
The mlxsw_sp_qdisc argument is not used in any of the actual callbacks. Drop it. Signed-off-by:
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David S. Miller authored
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David S. Miller authored
Marek Behún says: ==================== net: phy: marvell: some HWMON updates Here are some updates for Marvell PHY HWMON, mainly - refactoring for code deduplication - Amethyst PHY support ==================== Signed-off-by: -
Marek Behún authored
Add support for Amethyst internal PHY. The only difference from Peridot is HWMON. Signed-off-by:
Marek Behún <kabel@kernel.org> Signed-off-by:
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Marek Behún authored
Amethyst internal PHYs also report empty model number in MII_PHYSID2. Fill in switch product number, as is done for Topaz and Peridot. Signed-off-by:
Andrew Lunn <andrew@lunn.ch> Signed-off-by:
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Marek Behún authored
Use the &= operator instead of ret = ret & ... Signed-off-by:
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Marek Behún authored
Register 27_6.15:14 has the following description in 88E6393X documentation: Temperature Sensor Enable 0x0 - Sample every 1s 0x1 - Sense rate decided by bits 10:8 of this register 0x2 - Use 26_6.5 (One shot Temperature Sample) to enable 0x3 - Disable This is compatible with how the 6390 code uses this register currently, but the 6390 code handles it as two 1-bit registers (somewhat), instead of one register with 4 possible values. (A newer version of the 6390 documentation removed temperature sensor section completely. In an older version, the above mentioned register is reserved, although it is R/W. Since the code works, I think we can assume that it is correct.) Rename this register and define all 4 values according to 6393X documentation. Signed-off-by: -
Marek Behún authored
Use a structure of Marvell PHY specific HWMON methods to reduce code duplication. Store a pointer to this structure into the PHY driver's driver_data member. Signed-off-by:
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David S. Miller authored
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git://git.kernel.org/pub/scm/linux/kernel/git/saeed/linuxDavid S. Miller authored
Saeed Mahameed says: ==================== mlx5-updates-2021-04-19 This patchset provides some updates to mlx5e and mlx5 SW steering drivers: 1) Tariq and Vladyslav they both provide some trivial update to mlx5e netdev. The next 12 patches in the patchset are focused toward mlx5 SW steering: 2) 3 trivial cleanup patches 3) Dynamic Flex parser support: Flex parser is a HW parser that can support protocols that are not natively supported by the HCA, such as Geneve (TLV options) and GTP-U. There are 8 such parsers, and each of them can be assigned to parse a specific set of protocols. 4) Enable matching on Geneve TLV options 5) Use Flex parser for MPLS over UDP/GRE 6) Enable matching on tunnel GTP-U and GTP-U first extension header using 7) Improved QoS for SW steering internal QPair for a better insertion rate ==================== Signed-off-by: -
Xiaoliang Yang authored
ALWAYS_GUARD_BAND_SCH_Q bit in TAS config register is descripted as this: 0: Guard band is implemented for nonschedule queues to schedule queues transition. 1: Guard band is implemented for any queue to schedule queue transition. The driver set guard band be implemented for any queue to schedule queue transition before, which will make each GCL time slot reserve a guard band time that can pass the max SDU frame. Because guard band time could not be set in tc-taprio now, it will use about 12000ns to pass 1500B max SDU. This limits each GCL time interval to be more than 12000ns. This patch change the guard band to be only implemented for nonschedule queues to schedule queues transition, so that there is no need to reserve guard band on each GCL. Users can manually add guard band time for each schedule queues in their configuration if they want. Signed-off-by:
Xiaoliang Yang <xiaoliang.yang_1@nxp.com> Reviewed-by:
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David S. Miller authored
Oleksij Rempel says: ==================== provide generic net selftest support changes v3: - make more granular tests - enable loopback for all PHYs by default - fix allmodconfig build errors - poll for link status update after switching to the loopback mode changes v2: - make generic selftests available for all networking devices. - make use of net_selftest* on FEC, ag71xx and all DSA switches. - add loopback support on more PHYs. This patch set provides diagnostic capabilities for some iMX, ag71xx or any DSA based devices. For proper functionality, PHY loopback support is needed. So far there is only initial infrastructure with basic tests. ==================== Signed-off-by:
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