platform/kernel/linux-starfive.git
2 years agoiwlwifi: mvm: allow enabling UHB TAS in the USA via ACPI setting
Ayala Barazani [Fri, 28 Jan 2022 13:34:22 +0000 (15:34 +0200)]
iwlwifi: mvm: allow enabling UHB TAS in the USA via ACPI setting

Read a new bit defined in ACPI WTAS that allows OEMs to specify whether
TAS is allowed in UHB (6-7GHz) in the USA.  This can be used by OEMs
that got certified to use this feature.

Signed-off-by: Ayala Barazani <ayala.barazani@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220128153014.1d2ae1e6bcdb.I177929ed01ed7bf4614ea0f6db2af9e52de13316@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2 years agoiwlwifi: mvm: offload channel switch timing to FW
Nathan Errera [Fri, 28 Jan 2022 13:34:21 +0000 (15:34 +0200)]
iwlwifi: mvm: offload channel switch timing to FW

Since FW is now in charge of timing the channel switch, there is no need
to send the add/modify/remove time event command to fw with every (e)CSA
element.
However, the driver needs to cancel the channel switch if the CS start
notification arrives and it does not know about an ongoing channel switch.

Signed-off-by: Nathan Errera <nathan.errera@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20220128153013.ac3af0ff22c7.Ie87c62047b71b93b12aa80b5dc5391b4798dbe97@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2 years agoiwlwifi: mvm: Don't call iwl_mvm_sta_from_mac80211() with NULL sta
Takashi Iwai [Fri, 21 Jan 2022 11:40:24 +0000 (12:40 +0100)]
iwlwifi: mvm: Don't call iwl_mvm_sta_from_mac80211() with NULL sta

The recent fix for NULL sta in iwl_mvm_get_tx_rate() still has a call
of iwl_mvm_sta_from_mac80211() that may be called with NULL sta.
Although this practically only points to the address and the actual
access doesn't happen due to the conditional evaluation at a later
point, it looks a bit flaky.

This patch drops the temporary variable above and evaluates
iwm_mvm_sta_from_mac80211() directly for avoiding confusions.

Fixes: d599f714b73e ("iwlwifi: mvm: don't crash on invalid rate w/o STA")
Signed-off-by: Takashi Iwai <tiwai@suse.de>
Link: https://lore.kernel.org/r/20220121114024.10454-1-tiwai@suse.de
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
2 years agomac80211_hwsim: Advertise support for EHT capabilities
Ilan Peer [Mon, 14 Feb 2022 16:30:06 +0000 (17:30 +0100)]
mac80211_hwsim: Advertise support for EHT capabilities

Add EHT capabilities to bands.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.1b710f8e04ce.I11d6911dafc01deb8ceb7828e363e8554701790a@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agomac80211: parse AddBA request with extended AddBA element
Mordechay Goodstein [Mon, 14 Feb 2022 16:30:05 +0000 (17:30 +0100)]
mac80211: parse AddBA request with extended AddBA element

In EHT requesting aggregation with 1K needs the use of extended
the AddBA element for the buffer size, so add the logic to parse
it and make sure it's in limits of the EHT aggregation size.

Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Link: https://lore.kernel.org/r/20220214173004.8209cae9d9e4.I434f5588602f83b4e658c660120040913b3a2e3d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agomac80211: calculate max RX NSS for EHT mode
Mordechay Goodstein [Mon, 14 Feb 2022 16:30:04 +0000 (17:30 +0100)]
mac80211: calculate max RX NSS for EHT mode

If the station supports EHT mode, calculate the maximum RX NSS
from EHT station capabilities.

Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Link: https://lore.kernel.org/r/20220214173004.cf61972c8919.I54f5a416f0789bf4eefad04703d941b6755f6dd6@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agomac80211: Add support for storing station EHT capabilities
Ilan Peer [Mon, 14 Feb 2022 16:30:03 +0000 (17:30 +0100)]
mac80211: Add support for storing station EHT capabilities

When a station configuration is updated, also update the station
EHT capabilities.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.47213ffb23a8.I15c6c8430e1a0184b1322e40f1727ed4f17b04e2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agomac80211: Handle station association response with EHT
Ilan Peer [Mon, 14 Feb 2022 16:30:02 +0000 (17:30 +0100)]
mac80211: Handle station association response with EHT

When the association is an EHT association, parse the EHT
element from the association response and update the
station's EHT capabilities accordingly.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.f33574718755.I21182234c5303d9423eabd5eb997e7cf75f8e0c8@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agomac80211: Add EHT capabilities to association/probe request
Ilan Peer [Mon, 14 Feb 2022 16:30:01 +0000 (17:30 +0100)]
mac80211: Add EHT capabilities to association/probe request

Add the EHT capabilities element to both probe request and
association request frames, if advertised by the driver.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.2ec94388acee.I40d2ef06099cb091e9c2c01f8ef521b993a3d559@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agomac80211: Add initial support for EHT and 320 MHz channels
Ilan Peer [Mon, 14 Feb 2022 16:30:00 +0000 (17:30 +0100)]
mac80211: Add initial support for EHT and 320 MHz channels

Add initial support for EHT and 320 MHz bandwidth in mac80211.

As a new IEEE80211_STA_RX_BW_320 is added to
enum ieee80211_sta_rx_bandwidth, update the drivers to avoid
compilation warnings.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.0f144cc0bba6.Iad18111264da87eed5fd7b017f0cc6e58c604e07@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agomac80211: Support parsing EHT elements
Ilan Peer [Mon, 14 Feb 2022 16:29:59 +0000 (17:29 +0100)]
mac80211: Support parsing EHT elements

Parse the new EHT elements in the element parsing utilities.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.4d52ddaf1af4.Ib6beb1aa85e25b71ce40d3260b2e5b117cc42308@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agocfg80211: Support configuration of station EHT capabilities
Ilan Peer [Mon, 14 Feb 2022 16:29:58 +0000 (17:29 +0100)]
cfg80211: Support configuration of station EHT capabilities

Add attributes and some code bits to support userspace passing
in EHT capabilities of stations.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.ecf0b3ff9627.Icb4a5f2ec7b41d9008ac4cfc16c59baeb84793d3@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agocfg80211: add NO-EHT flag to regulatory
Ilan Peer [Mon, 14 Feb 2022 16:29:57 +0000 (17:29 +0100)]
cfg80211: add NO-EHT flag to regulatory

This may be necessary in some cases, add a flag and propagate
it, just like the NO-HE that already exists.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
[split off from a combined 320/no-EHT patch]
Link: https://lore.kernel.org/r/20220214173004.dbb85a7b86bb.Ifc1e2daac51c1cc5f895ccfb79faf5eaec3950ec@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agonl80211: add support for 320MHz channel limitation
Sriram R [Mon, 14 Feb 2022 16:29:56 +0000 (17:29 +0100)]
nl80211: add support for 320MHz channel limitation

Add support to advertise drivers or regulatory limitations on 320 MHz
channels to userspace.

Signed-off-by: Sriram R <quic_srirrama@quicinc.com>
Co-authored-by: Karthikeyan Periyasamy <quic_periyasia@quicinc.com>
Signed-off-by: Karthikeyan Periyasamy <quic_periyasia@quicinc.com>
Co-authored-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://lore.kernel.org/r/1640163883-12696-6-git-send-email-quic_vjakkam@quicinc.com
Link: https://lore.kernel.org/r/20220214163009.175289-3-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agonl80211: add EHT MCS support
Veerendranath Jakkam [Mon, 14 Feb 2022 16:29:55 +0000 (17:29 +0100)]
nl80211: add EHT MCS support

Add support for reporting and calculating EHT bitrates.

Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://lore.kernel.org/r/1640163883-12696-7-git-send-email-quic_vjakkam@quicinc.com
Link: https://lore.kernel.org/r/20220214163009.175289-2-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agocfg80211: Add support for EHT 320 MHz channel width
Jia Ding [Mon, 14 Feb 2022 16:29:54 +0000 (17:29 +0100)]
cfg80211: Add support for EHT 320 MHz channel width

Add 320 MHz support in the channel def and center frequency validation
with compatible check.

Signed-off-by: Jia Ding <quic_jiad@quicinc.com>
Co-authored-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Signed-off-by: Karthikeyan Periyasamy <quic_periyasa@quicinc.com>
Co-authored-by: Muna Sinada <quic_msinada@quicinc.com>
Signed-off-by: Muna Sinada <quic_msinada@quicinc.com>
Co-authored-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Signed-off-by: Veerendranath Jakkam <quic_vjakkam@quicinc.com>
Link: https://lore.kernel.org/r/1640163883-12696-5-git-send-email-quic_vjakkam@quicinc.com
Link: https://lore.kernel.org/r/20220214163009.175289-1-johannes@sipsolutions.net
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agocfg80211: Add data structures to capture EHT capabilities
Ilan Peer [Mon, 14 Feb 2022 16:29:53 +0000 (17:29 +0100)]
cfg80211: Add data structures to capture EHT capabilities

And advertise EHT capabilities to user space when supported.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.6fb70658529f.I2413a37c8f7d2d6d638038a3d95360a3fce0114d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agoieee80211: add EHT 1K aggregation definitions
Mordechay Goodstein [Mon, 14 Feb 2022 16:29:52 +0000 (17:29 +0100)]
ieee80211: add EHT 1K aggregation definitions

We add the fields for parsing extended ADDBA request/respond,
and new max 1K aggregation for limit ADDBA request/respond.

Adjust drivers to use the proper macro, IEEE80211_MAX_AMPDU_BUF ->
IEEE80211_MAX_AMPDU_BUF_HE.

Signed-off-by: Mordechay Goodstein <mordechay.goodstein@intel.com>
Link: https://lore.kernel.org/r/20220214173004.b8b447ce95b7.I0ee2554c94e89abc7a752b0f7cc7fd79c273efea@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agoieee80211: Add EHT (802.11be) definitions
Ilan Peer [Mon, 14 Feb 2022 16:29:51 +0000 (17:29 +0100)]
ieee80211: Add EHT (802.11be) definitions

Based on Draft P802.11be_D1.4.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.928e23cacb2b.Id30a3ef2844b296efbd5486fe1da9ca36a95c5cf@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agomac80211_hwsim: Add custom regulatory for 6GHz
Ilan Peer [Mon, 14 Feb 2022 16:29:50 +0000 (17:29 +0100)]
mac80211_hwsim: Add custom regulatory for 6GHz

Add a custom regulatory domain for testing 6 GHz, including
320 MHz bandwidth. This can be used before the regulatory
databases are all updated etc.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Link: https://lore.kernel.org/r/20220214173004.e3d6faf1f35f.I9507395b64496d96a2276ba8c1e1323e54407aa7@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agomac80211_hwsim: don't shadow a global variable
Johannes Berg [Mon, 14 Feb 2022 16:29:49 +0000 (17:29 +0100)]
mac80211_hwsim: don't shadow a global variable

The argument to hwsim_init_s1g_channels() shadows a global,
change that to be clearer.

Link: https://lore.kernel.org/r/20220214173004.66bac90d64a8.I3e878e42bf2feecbb0a6ca38a68c236c23a8c9e6@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agomac80211_hwsim: check TX and STA bandwidth
Johannes Berg [Mon, 14 Feb 2022 16:29:48 +0000 (17:29 +0100)]
mac80211_hwsim: check TX and STA bandwidth

Add checks to hwsim to validate that neither TX nor any
station's configured bandwidth can exceed the channel
(context) configuration previously requested.

Link: https://lore.kernel.org/r/20220214173004.9fd154d2c3c2.Ia0cd152357a373149bab017d479ab7d5ded289c0@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agonl80211: accept only HE capability elements with valid size
Johannes Berg [Mon, 14 Feb 2022 16:29:23 +0000 (17:29 +0100)]
nl80211: accept only HE capability elements with valid size

The kernel (driver code) should be able to assume that a station's
HE capabilities are not badly sized, so reject them if they are.

Link: https://lore.kernel.org/r/20220214172921.80b710d45cb7.Id57ce32f9538a40e36c620fabedbd2c73346ef56@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agomac80211: parse only HE capability elements with valid size
Johannes Berg [Mon, 14 Feb 2022 16:29:22 +0000 (17:29 +0100)]
mac80211: parse only HE capability elements with valid size

The code validates the HE capability element size later,
but slightly wrong, so use the new helper to do it right
and only accept it if it has a good size.

Link: https://lore.kernel.org/r/20220214172920.b5b06f264a61.I645ac1e2dc0ace223ef3e551cd5a71c88bd55e04@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agoieee80211: add helper to check HE capability element size
Johannes Berg [Mon, 14 Feb 2022 16:29:21 +0000 (17:29 +0100)]
ieee80211: add helper to check HE capability element size

This element has a very dynamic structure, create a small helper
function to validate its size. We're currently checking it in
mac80211 in a conversion function, but that's actually slightly
buggy.

Link: https://lore.kernel.org/r/20220214172920.750bee9eaf37.Ie18359bd38143b7dc949078f10752413e6d36854@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agonl80211: use RCU to read regdom in reg get/dump
Johannes Berg [Mon, 14 Feb 2022 09:18:20 +0000 (10:18 +0100)]
nl80211: use RCU to read regdom in reg get/dump

Use RCU here to read the regdomain, this will allow us
to remove the RTNL locking from the setter.

Note in nl80211_get_reg_do() we still need the RTNL to
do the wiphy lookup.

Link: https://lore.kernel.org/r/20220214101820.5d4acbcf2a46.Ibfc91980439862125e983d9adeebaba73fe38e2d@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agomac80211_hwsim: Add debugfs to control rx status RSSI
Beni Lev [Thu, 10 Feb 2022 19:16:50 +0000 (20:16 +0100)]
mac80211_hwsim: Add debugfs to control rx status RSSI

Set the base RSSI of a TX frame. The final RSSI of the frame will be
the base RSSI + the radio's TX power

Signed-off-by: Beni Lev <beni.lev@intel.com>
Link: https://lore.kernel.org/r/20220210201649.dddebbb55a7f.I6c0607694587b577070339078829fcc20dfcfe2c@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agoieee80211: use tab to indent struct ieee80211_neighbor_ap_info
Johannes Berg [Thu, 10 Feb 2022 19:12:43 +0000 (20:12 +0100)]
ieee80211: use tab to indent struct ieee80211_neighbor_ap_info

Somehow spaces were used here, use tab instead.

Link: https://lore.kernel.org/r/20220210201242.da8fa2e5ae8d.Ia452db01876e52e815f6337fef437049df0d8bd9@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2 years agortw89: handle TX/RX 160M bandwidth
Ping-Ke Shih [Fri, 11 Feb 2022 07:59:53 +0000 (15:59 +0800)]
rtw89: handle TX/RX 160M bandwidth

Apply 160M bandwidth to RA (rate adaptive) mechanism, so it can transmit
packets with this bandwidth. On the other hand, convert 160M bandwidth
from RX desc to rx_info_bw.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220211075953.40421-7-pkshih@realtek.com
2 years agortw89: declare if chip support 160M bandwidth
Ping-Ke Shih [Fri, 11 Feb 2022 07:59:52 +0000 (15:59 +0800)]
rtw89: declare if chip support 160M bandwidth

The new chip can support 160M, so add a chip attribute to indicate the
chip support it.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220211075953.40421-6-pkshih@realtek.com
2 years agortw89: add 6G support to rate adaptive mechanism
Ping-Ke Shih [Fri, 11 Feb 2022 07:59:51 +0000 (15:59 +0800)]
rtw89: add 6G support to rate adaptive mechanism

Construct rate mask of 6G band, and rate adaptive mechanism can work well
on this band.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220211075953.40421-5-pkshih@realtek.com
2 years agortw89: extend subband for 6G band
Zong-Zhe Yang [Fri, 11 Feb 2022 07:59:50 +0000 (15:59 +0800)]
rtw89: extend subband for 6G band

Split 6G band into 8 sub-bands where indexes are from 0 to 7,
i.e. RTW89_CH_6G_BAND_IDX[0-7]. Then, decide subband by both
band and channel instead of just channel because conflicts
between 5G channels and 6G channels.

Moreover, add default case to the existing use of switch (subband).

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220211075953.40421-4-pkshih@realtek.com
2 years agortw89: refine naming of rfk helpers with prefix
Zong-Zhe Yang [Fri, 11 Feb 2022 07:59:49 +0000 (15:59 +0800)]
rtw89: refine naming of rfk helpers with prefix

Since these macro in rfk helpers are common now, a common naming
should be better. So, apply RTW89_ as prefix to them, and modify
the use correspondly. No logic is changed at all.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220211075953.40421-3-pkshih@realtek.com
2 years agortw89: make rfk helpers common across chips
Zong-Zhe Yang [Fri, 11 Feb 2022 07:59:48 +0000 (15:59 +0800)]
rtw89: make rfk helpers common across chips

These rfk helpers are also useful for the chip which is under planning.
So, move them to common code to avoid duplicate stuff in the future.

Signed-off-by: Zong-Zhe Yang <kevin_yang@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220211075953.40421-2-pkshih@realtek.com
2 years agobrcmfmac: Add BCM43454/6 support
Zhao, Jiaqing [Wed, 9 Feb 2022 15:46:50 +0000 (15:46 +0000)]
brcmfmac: Add BCM43454/6 support

BCM43454/6 is a variant of BCM4345 which is exactly identical to
BCM4345/6, except the chip id is 0xa9be. This patch adds support
for BCM43454/6 by handing it in the same way as BCM4345.

Note: when loading some specific version of BCM4345 firmware, the
chip id may become 0x4345. This is an expected behavior, and it will
restore to 0xa9be after power cycle.

Signed-off-by: Jiaqing Zhao <jiaqing.zhao@intel.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/CO1PR11MB47859B51BCA88613D1582EB88E2E9@CO1PR11MB4785.namprd11.prod.outlook.com
2 years agoMerge tag 'wireless-next-2022-02-11' of git://git.kernel.org/pub/scm/linux/kernel...
David S. Miller [Fri, 11 Feb 2022 14:19:23 +0000 (14:19 +0000)]
Merge tag 'wireless-next-2022-02-11' of git://git./linux/kernel/git/wireless/wireless-next

wireless-next patches for v5.18

First set of patches for v5.18, with both wireless and stack patches.
rtw89 now has AP mode support and wcn36xx has survey support. But
otherwise pretty normal.

Major changes:

ath11k

* add LDPC FEC type in 802.11 radiotap header

* enable RX PPDU stats in monitor co-exist mode

wcn36xx

* implement survey reporting

brcmfmac

* add CYW43570 PCIE device

rtw88

* rtw8821c: enable RFE 6 devices

rtw89

* AP mode support

mt76

* mt7916 support

* background radar detection support

2 years agoMerge branch 'ipv6-loopback'
David S. Miller [Fri, 11 Feb 2022 11:44:27 +0000 (11:44 +0000)]
Merge branch 'ipv6-loopback'

Eric Dumazet says:

====================
ipv6: remove addrconf reliance on loopback

Second patch in this series removes IPv6 requirement about the netns
loopback device being the last device being dismantled.

This was needed because rt6_uncached_list_flush_dev()
and ip6_dst_ifdown() had to switch dst dev to a known
device (loopback).

Instead of loopback, we can use the (hidden) blackhole_netdev
which is also always there.

This will allow future simplfications of netdev_run_to()
and other parts of the stack like default_device_exit_batch().

Last two patches are optimizations for both IP families.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoipv4: add (struct uncached_list)->quarantine list
Eric Dumazet [Thu, 10 Feb 2022 21:42:31 +0000 (13:42 -0800)]
ipv4: add (struct uncached_list)->quarantine list

This is an optimization to keep the per-cpu lists as short as possible:

Whenever rt_flush_dev() changes one rtable dst.dev
matching the disappearing device, it can can transfer the object
to a quarantine list, waiting for a final rt_del_uncached_list().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoipv6: add (struct uncached_list)->quarantine list
Eric Dumazet [Thu, 10 Feb 2022 21:42:30 +0000 (13:42 -0800)]
ipv6: add (struct uncached_list)->quarantine list

This is an optimization to keep the per-cpu lists as short as possible:

Whenever rt6_uncached_list_flush_dev() changes one rt6_info
matching the disappearing device, it can can transfer the object
to a quarantine list, waiting for a final rt6_uncached_list_del().

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoipv6: give an IPv6 dev to blackhole_netdev
Eric Dumazet [Thu, 10 Feb 2022 21:42:29 +0000 (13:42 -0800)]
ipv6: give an IPv6 dev to blackhole_netdev

IPv6 addrconf notifiers wants the loopback device to
be the last device being dismantled at netns deletion.

This caused many limitations and work arounds.

Back in linux-5.3, Mahesh added a per host blackhole_netdev
that can be used whenever we need to make sure objects no longer
refer to a disappearing device.

If we attach to blackhole_netdev an ip6_ptr (allocate an idev),
then we can use this special device (which is never freed)
in place of the loopback_dev (which can be freed).

This will permit improvements in netdev_run_todo() and other parts
of the stack where had steps to make sure loopback_dev was
the last device to disappear.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Mahesh Bandewar <maheshb@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoipv6: get rid of net->ipv6.rt6_stats->fib_rt_uncache
Eric Dumazet [Thu, 10 Feb 2022 21:42:28 +0000 (13:42 -0800)]
ipv6: get rid of net->ipv6.rt6_stats->fib_rt_uncache

This counter has never been visible, there is little point
trying to maintain it.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agodsa: mv88e6xxx: make serdes SGMII/Fiber tx amplitude configurable
Holger Brunck [Thu, 10 Feb 2022 17:48:23 +0000 (18:48 +0100)]
dsa: mv88e6xxx: make serdes SGMII/Fiber tx amplitude configurable

The mv88e6352, mv88e6240 and mv88e6176  have a serdes interface. This patch
allows to configure the output swing to a desired value in the
phy-handle of the port. The value which is peak to peak has to be
specified in microvolts. As the chips only supports eight dedicated
values we return EINVAL if the value in the DTS does not match one of
these values.

Signed-off-by: Holger Brunck <holger.brunck@hitachienergy.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Marek Behún <kabel@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agodt-bindings: phy: Add `tx-p2p-microvolt` property binding
Marek Behún [Thu, 10 Feb 2022 17:48:22 +0000 (18:48 +0100)]
dt-bindings: phy: Add `tx-p2p-microvolt` property binding

Common PHYs and network PCSes often have the possibility to specify
peak-to-peak voltage on the differential pair - the default voltage
sometimes needs to be changed for a particular board.

Add properties `tx-p2p-microvolt` and `tx-p2p-microvolt-names` for this
purpose. The second property is needed to specify the mode for the
corresponding voltage in the `tx-p2p-microvolt` property, if the voltage
is to be used only for speficic mode. More voltage-mode pairs can be
specified.

Example usage with only one voltage (it will be used for all supported
PHY modes, the `tx-p2p-microvolt-names` property is not needed in this
case):

  tx-p2p-microvolt = <915000>;

Example usage with voltages for multiple modes:

  tx-p2p-microvolt = <915000>, <1100000>, <1200000>;
  tx-p2p-microvolt-names = "2500base-x", "usb", "pcie";

Add these properties into a separate file phy/transmit-amplitude.yaml,
which should be referenced by any binding that uses it.

Signed-off-by: Marek Behún <kabel@kernel.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoipv6: Reject routes configurations that specify dsfield (tos)
Guillaume Nault [Thu, 10 Feb 2022 15:08:08 +0000 (16:08 +0100)]
ipv6: Reject routes configurations that specify dsfield (tos)

The ->rtm_tos option is normally used to route packets based on both
the destination address and the DS field. However it's ignored for
IPv6 routes. Setting ->rtm_tos for IPv6 is thus invalid as the route
is going to work only on the destination address anyway, so it won't
behave as specified.

Suggested-by: Toke Høiland-Jørgensen <toke@redhat.com>
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Reviewed-by: David Ahern <dsahern@kernel.org>
Reviewed-by: Shuah Khan <skhan@linuxfoundation.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'dsa-cleanup'
David S. Miller [Fri, 11 Feb 2022 11:17:33 +0000 (11:17 +0000)]
Merge branch 'dsa-cleanup'

Vladimir Oltean says:

====================
More aggressive DSA cleanup

This series deletes some code which is apparently not needed.

I've had these patches in my tree for a while, and testing on my boards
didn't reveal any issues.

Compared to the RFC v1 series, the only change is the addition of patch 3.
https://patchwork.kernel.org/project/netdevbpf/cover/20220107184842.550334-1-vladimir.oltean@nxp.com/
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: remove lockdep class for DSA slave address list
Vladimir Oltean [Thu, 10 Feb 2022 13:45:00 +0000 (15:45 +0200)]
net: dsa: remove lockdep class for DSA slave address list

Since commit 2f1e8ea726e9 ("net: dsa: link interfaces with the DSA
master to get rid of lockdep warnings"), suggested by Cong Wang, the
DSA interfaces and their master have different dev->nested_level, which
makes netif_addr_lock() stop complaining about potentially recursive
locking on the same lock class.

So we no longer need DSA slave interfaces to have their own lockdep
class.

Cc: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: remove lockdep class for DSA master address list
Vladimir Oltean [Thu, 10 Feb 2022 13:44:59 +0000 (15:44 +0200)]
net: dsa: remove lockdep class for DSA master address list

Since commit 2f1e8ea726e9 ("net: dsa: link interfaces with the DSA
master to get rid of lockdep warnings"), suggested by Cong Wang, the
DSA interfaces and their master have different dev->nested_level, which
makes netif_addr_lock() stop complaining about potentially recursive
locking on the same lock class.

So we no longer need DSA masters to have their own lockdep class.

Cc: Cong Wang <xiyou.wangcong@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: dsa: remove ndo_get_phys_port_name and ndo_get_port_parent_id
Vladimir Oltean [Thu, 10 Feb 2022 13:44:58 +0000 (15:44 +0200)]
net: dsa: remove ndo_get_phys_port_name and ndo_get_port_parent_id

There are no legacy ports, DSA registers a devlink instance with ports
unconditionally for all switch drivers. Therefore, delete the old-style
ndo operations used for determining bridge forwarding domains.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Jiri Pirko <jiri@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'smc-optimizations'
David S. Miller [Fri, 11 Feb 2022 11:14:58 +0000 (11:14 +0000)]
Merge branch 'smc-optimizations'

D. Wythe says:

====================
net/smc: Optimizing performance in short-lived scenarios

This patch set aims to optimizing performance of SMC in short-lived
links scenarios, which is quite unsatisfactory right now.

In our benchmark, we test it with follow scripts:

./wrk -c 10000 -t 4 -H 'Connection: Close' -d 20 http://smc-server

Current performance figures like that:

Running 20s test @ http://11.213.45.6
  4 threads and 10000 connections
  4956 requests in 20.06s, 3.24MB read
  Socket errors: connect 0, read 0, write 672, timeout 0
Requests/sec:    247.07
Transfer/sec:    165.28KB

There are many reasons for this phenomenon, this patch set doesn't
solve it all though, but it can be well alleviated with it in.

Patch 1/5  (Make smc_tcp_listen_work() independent) :

Separate smc_tcp_listen_work() from smc_listen_work(), make them
independent of each other, the busy SMC handshake can not affect new TCP
connections visit any more. Avoid discarding a large number of TCP
connections after being overstock, which is undoubtedly raise the
connection establishment time.

Patch 2/5 (Limit SMC backlog connections):

Since patch 1 has separated smc_tcp_listen_work() from
smc_listen_work(), an unrestricted TCP accept have come into being. This
patch try to put a limit on SMC backlog connections refers to
implementation of TCP.

Patch 3/5 (Limit SMC visits when handshake workqueue congested):

Considering the complexity of SMC handshake right now, in short-lived
links scenarios, this may not be the main scenario of SMC though, it's
performance is still quite poor. This patch try to provide constraint on
SMC handshake when handshake workqueue congested, which is the sign of
SMC handshake stacking in our opinion.

Patch 4/5 (Dynamic control handshake limitation by socket options)

This patch allow applications dynamically control the ability of SMC
handshake limitation. Since SMC don't support set SMC socket option
before,
this patch also have to support SMC's owns socket options.

Patch 5/5 (Add global configure for handshake limitation by netlink)

This patch provides a way to get benefit of handshake limitation
without
modifying any code for applications, which is quite useful for most
existing applications.

After this patch set, performance figures like that:

Running 20s test @ http://11.213.45.6
  4 threads and 10000 connections
  693253 requests in 20.10s, 452.88MB read
Requests/sec:  34488.13
Transfer/sec:     22.53MB

That's a quite well performance improvement, about to 6 to 7 times in my
environment.
---
changelog:
v1 -> v2:
- fix compile warning
- fix invalid dependencies in kconfig
v2 -> v3:
- correct spelling mistakes
- fix useless variable declare
v3 -> v4
- make smc_tcp_ls_wq be static
v4 -> v5
- add dynamic control for SMC auto fallback by socket options
- add global configure for SMC auto fallback through netlink
v5 -> v6
- move auto fallback to net namespace scope
- remove auto fallback attribute in SMC_GEN_SYS_INFO
- add independent attributes for auto fallback
v6 -> v7
- fix wording and the naming issues, rename 'auto fallback' to handshake
  limitation.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet/smc: Add global configure for handshake limitation by netlink
D. Wythe [Thu, 10 Feb 2022 09:11:38 +0000 (17:11 +0800)]
net/smc: Add global configure for handshake limitation by netlink

Although we can control SMC handshake limitation through socket options,
which means that applications who need it must modify their code. It's
quite troublesome for many existing applications. This patch modifies
the global default value of SMC handshake limitation through netlink,
providing a way to put constraint on handshake without modifies any code
for applications.

Suggested-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: D. Wythe <alibuda@linux.alibaba.com>
Reviewed-by: Tony Lu <tonylu@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet/smc: Dynamic control handshake limitation by socket options
D. Wythe [Thu, 10 Feb 2022 09:11:37 +0000 (17:11 +0800)]
net/smc: Dynamic control handshake limitation by socket options

This patch aims to add dynamic control for SMC handshake limitation for
every smc sockets, in production environment, it is possible for the
same applications to handle different service types, and may have
different opinion on SMC handshake limitation.

This patch try socket options to complete it, since we don't have socket
option level for SMC yet, which requires us to implement it at the same
time.

This patch does the following:

- add new socket option level: SOL_SMC.
- add new SMC socket option: SMC_LIMIT_HS.
- provide getter/setter for SMC socket options.

Link: https://lore.kernel.org/all/20f504f961e1a803f85d64229ad84260434203bd.1644323503.git.alibuda@linux.alibaba.com/
Signed-off-by: D. Wythe <alibuda@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet/smc: Limit SMC visits when handshake workqueue congested
D. Wythe [Thu, 10 Feb 2022 09:11:36 +0000 (17:11 +0800)]
net/smc: Limit SMC visits when handshake workqueue congested

This patch intends to provide a mechanism to put constraint on SMC
connections visit according to the pressure of SMC handshake process.
At present, frequent visits will cause the incoming connections to be
backlogged in SMC handshake queue, raise the connections established
time. Which is quite unacceptable for those applications who base on
short lived connections.

There are two ways to implement this mechanism:

1. Put limitation after TCP established.
2. Put limitation before TCP established.

In the first way, we need to wait and receive CLC messages that the
client will potentially send, and then actively reply with a decline
message, in a sense, which is also a sort of SMC handshake, affect the
connections established time on its way.

In the second way, the only problem is that we need to inject SMC logic
into TCP when it is about to reply the incoming SYN, since we already do
that, it's seems not a problem anymore. And advantage is obvious, few
additional processes are required to complete the constraint.

This patch use the second way. After this patch, connections who beyond
constraint will not informed any SMC indication, and SMC will not be
involved in any of its subsequent processes.

Link: https://lore.kernel.org/all/1641301961-59331-1-git-send-email-alibuda@linux.alibaba.com/
Signed-off-by: D. Wythe <alibuda@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet/smc: Limit backlog connections
D. Wythe [Thu, 10 Feb 2022 09:11:35 +0000 (17:11 +0800)]
net/smc: Limit backlog connections

Current implementation does not handling backlog semantics, one
potential risk is that server will be flooded by infinite amount
connections, even if client was SMC-incapable.

This patch works to put a limit on backlog connections, referring to the
TCP implementation, we divides SMC connections into two categories:

1. Half SMC connection, which includes all TCP established while SMC not
connections.

2. Full SMC connection, which includes all SMC established connections.

For half SMC connection, since all half SMC connections starts with TCP
established, we can achieve our goal by put a limit before TCP
established. Refer to the implementation of TCP, this limits will based
on not only the half SMC connections but also the full connections,
which is also a constraint on full SMC connections.

For full SMC connections, although we know exactly where it starts, it's
quite hard to put a limit before it. The easiest way is to block wait
before receive SMC confirm CLC message, while it's under protection by
smc_server_lgr_pending, a global lock, which leads this limit to the
entire host instead of a single listen socket. Another way is to drop
the full connections, but considering the cast of SMC connections, we
prefer to keep full SMC connections.

Even so, the limits of full SMC connections still exists, see commits
about half SMC connection below.

After this patch, the limits of backend connection shows like:

For SMC:

1. Client with SMC-capability can makes 2 * backlog full SMC connections
   or 1 * backlog half SMC connections and 1 * backlog full SMC
   connections at most.

2. Client without SMC-capability can only makes 1 * backlog half TCP
   connections and 1 * backlog full TCP connections.

Signed-off-by: D. Wythe <alibuda@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet/smc: Make smc_tcp_listen_work() independent
D. Wythe [Thu, 10 Feb 2022 09:11:34 +0000 (17:11 +0800)]
net/smc: Make smc_tcp_listen_work() independent

In multithread and 10K connections benchmark, the backend TCP connection
established very slowly, and lots of TCP connections stay in SYN_SENT
state.

Client: smc_run wrk -c 10000 -t 4 http://server

the netstate of server host shows like:
    145042 times the listen queue of a socket overflowed
    145042 SYNs to LISTEN sockets dropped

One reason of this issue is that, since the smc_tcp_listen_work() shared
the same workqueue (smc_hs_wq) with smc_listen_work(), while the
smc_listen_work() do blocking wait for smc connection established. Once
the workqueue became congested, it's will block the accept() from TCP
listen.

This patch creates a independent workqueue(smc_tcp_ls_wq) for
smc_tcp_listen_work(), separate it from smc_listen_work(), which is
quite acceptable considering that smc_tcp_listen_work() runs very fast.

Signed-off-by: D. Wythe <alibuda@linux.alibaba.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agodt-bindings: net: dsa: realtek: convert to YAML schema, add MDIO
Luiz Angelo Daros de Luca [Wed, 9 Feb 2022 18:41:16 +0000 (15:41 -0300)]
dt-bindings: net: dsa: realtek: convert to YAML schema, add MDIO

Schema changes:

- support for mdio-connected switches (mdio driver), recognized by
  checking the presence of property "reg"
- new compatible strings for rtl8367s and rtl8367rb
- "interrupt-controller" was not added as a required property. It might
  still work polling the ports when missing.

Examples changes:

- renamed "switch_intc" to make it unique between examples
- removed "dsa-mdio" from mdio compatible property
- renamed phy@0 to ethernet-phy@0 (not tested with real HW)
  phy@ requires #phy-cells

Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Jakub Kicinski [Fri, 11 Feb 2022 01:29:56 +0000 (17:29 -0800)]
Merge git://git./linux/kernel/git/netdev/net

No conflicts.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge tag 'net-5.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
Linus Torvalds [Fri, 11 Feb 2022 00:01:22 +0000 (16:01 -0800)]
Merge tag 'net-5.17-rc4' of git://git./linux/kernel/git/netdev/net

Pull networking fixes from Jakub Kicinski:
 "Including fixes from netfilter and can.

Current release - new code bugs:

   - sparx5: fix get_stat64 out-of-bound access and crash

   - smc: fix netdev ref tracker misuse

  Previous releases - regressions:

   - eth: ixgbevf: require large buffers for build_skb on 82599VF, avoid
     overflows

   - eth: ocelot: fix all IP traffic getting trapped to CPU with PTP
     over IP

   - bonding: fix rare link activation misses in 802.3ad mode

  Previous releases - always broken:

   - tcp: fix tcp sock mem accounting in zero-copy corner cases

   - remove the cached dst when uncloning an skb dst and its metadata,
     since we only have one ref it'd lead to an UaF

   - netfilter:
      - conntrack: don't refresh sctp entries in closed state
      - conntrack: re-init state for retransmitted syn-ack, avoid
        connection establishment getting stuck with strange stacks
      - ctnetlink: disable helper autoassign, avoid it getting lost
      - nft_payload: don't allow transport header access for fragments

   - dsa: fix use of devres for mdio throughout drivers

   - eth: amd-xgbe: disable interrupts during pci removal

   - eth: dpaa2-eth: unregister netdev before disconnecting the PHY

   - eth: ice: fix IPIP and SIT TSO offload"

* tag 'net-5.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net: (53 commits)
  net: dsa: mv88e6xxx: fix use-after-free in mv88e6xxx_mdios_unregister
  net: mscc: ocelot: fix mutex lock error during ethtool stats read
  ice: Avoid RTNL lock when re-creating auxiliary device
  ice: Fix KASAN error in LAG NETDEV_UNREGISTER handler
  ice: fix IPIP and SIT TSO offload
  ice: fix an error code in ice_cfg_phy_fec()
  net: mpls: Fix GCC 12 warning
  dpaa2-eth: unregister the netdev before disconnecting from the PHY
  skbuff: cleanup double word in comment
  net: macb: Align the dma and coherent dma masks
  mptcp: netlink: process IPv6 addrs in creating listening sockets
  selftests: mptcp: add missing join check
  net: usb: qmi_wwan: Add support for Dell DW5829e
  vlan: move dev_put into vlan_dev_uninit
  vlan: introduce vlan_dev_free_egress_priority
  ax25: fix UAF bugs of net_device caused by rebinding operation
  net: dsa: fix panic when DSA master device unbinds on shutdown
  net: amd-xgbe: disable interrupts during pci removal
  tipc: rate limit warning for received illegal binding update
  net: mdio: aspeed: Add missing MODULE_DEVICE_TABLE
  ...

2 years agoMerge tag 'linux-kselftest-fixes-5.17-rc4' of git://git.kernel.org/pub/scm/linux...
Linus Torvalds [Thu, 10 Feb 2022 23:42:48 +0000 (15:42 -0800)]
Merge tag 'linux-kselftest-fixes-5.17-rc4' of git://git./linux/kernel/git/shuah/linux-kselftest

Pull Kselftest fixes from Shuah Khan:
 "Build and run-time fixes to pidfd, clone3, and ir tests"

* tag 'linux-kselftest-fixes-5.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  selftests/ir: fix build with ancient kernel headers
  selftests: fixup build warnings in pidfd / clone3 tests
  pidfd: fix test failure due to stack overflow on some arches

2 years agoMerge tag 'linux-kselftest-kunit-fixes-5.17-rc4' of git://git.kernel.org/pub/scm...
Linus Torvalds [Thu, 10 Feb 2022 23:39:59 +0000 (15:39 -0800)]
Merge tag 'linux-kselftest-kunit-fixes-5.17-rc4' of git://git./linux/kernel/git/shuah/linux-kselftest

Pull KUnit fixes from Shuah Khan:
 "Fixes to the test and usage documentation"

* tag 'linux-kselftest-kunit-fixes-5.17-rc4' of git://git.kernel.org/pub/scm/linux/kernel/git/shuah/linux-kselftest:
  Documentation: KUnit: Fix usage bug
  kunit: fix missing f in f-string in run_checks.py

2 years agonet: dsa: mv88e6xxx: fix use-after-free in mv88e6xxx_mdios_unregister
Vladimir Oltean [Thu, 10 Feb 2022 17:40:17 +0000 (19:40 +0200)]
net: dsa: mv88e6xxx: fix use-after-free in mv88e6xxx_mdios_unregister

Since struct mv88e6xxx_mdio_bus *mdio_bus is the bus->priv of something
allocated with mdiobus_alloc_size(), this means that mdiobus_free(bus)
will free the memory backing the mdio_bus as well. Therefore, the
mdio_bus->list element is freed memory, but we continue to iterate
through the list of MDIO buses using that list element.

To fix this, use the proper list iterator that handles element deletion
by keeping a copy of the list element next pointer.

Fixes: f53a2ce893b2 ("net: dsa: mv88e6xxx: don't use devres for mdiobus")
Reported-by: Rafael Richter <rafael.richter@gin.de>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/r/20220210174017.3271099-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoMerge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net...
Jakub Kicinski [Thu, 10 Feb 2022 19:45:35 +0000 (11:45 -0800)]
Merge branch '100GbE' of git://git./linux/kernel/git/tnguy/net-queue

Tony Nguyen says:

====================
Intel Wired LAN Driver Updates 2022-02-10

Dan Carpenter propagates an error in FEC configuration.

Jesse fixes TSO offloads of IPIP and SIT frames.

Dave adds a dedicated LAG unregister function to resolve a KASAN error
and moves auxiliary device re-creation after LAG removal to the service
task to avoid issues with RTNL lock.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/net-queue:
  ice: Avoid RTNL lock when re-creating auxiliary device
  ice: Fix KASAN error in LAG NETDEV_UNREGISTER handler
  ice: fix IPIP and SIT TSO offload
  ice: fix an error code in ice_cfg_phy_fec()
====================

Link: https://lore.kernel.org/r/20220210170515.2609656-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: mscc: ocelot: fix mutex lock error during ethtool stats read
Colin Foster [Thu, 10 Feb 2022 15:04:51 +0000 (07:04 -0800)]
net: mscc: ocelot: fix mutex lock error during ethtool stats read

An ongoing workqueue populates the stats buffer. At the same time, a user
might query the statistics. While writing to the buffer is mutex-locked,
reading from the buffer wasn't. This could lead to buggy reads by ethtool.

This patch fixes the former blamed commit, but the bug was introduced in
the latter.

Signed-off-by: Colin Foster <colin.foster@in-advantage.com>
Fixes: 1e1caa9735f90 ("ocelot: Clean up stats update deferred work")
Fixes: a556c76adc052 ("net: mscc: Add initial Ocelot switch support")
Reported-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Link: https://lore.kernel.org/all/20220210150451.416845-2-colin.foster@in-advantage.com/
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agonet: dsa: qca8k: fix noderef.cocci warnings
kernel test robot [Wed, 9 Feb 2022 22:13:04 +0000 (06:13 +0800)]
net: dsa: qca8k: fix noderef.cocci warnings

drivers/net/dsa/qca8k.c:422:37-43: ERROR: application of sizeof to pointer

 sizeof when applied to a pointer typed expression gives the size of
 the pointer

Generated by: scripts/coccinelle/misc/noderef.cocci

Fixes: 90386223f44e ("net: dsa: qca8k: add support for larger read/write size with mgmt Ethernet")
CC: Ansuel Smith <ansuelsmth@gmail.com>
Reported-by: kernel test robot <lkp@intel.com>
Signed-off-by: kernel test robot <lkp@intel.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Link: https://lore.kernel.org/r/20220209221304.GA17529@d2214a582157
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
2 years agoice: Avoid RTNL lock when re-creating auxiliary device
Dave Ertman [Fri, 21 Jan 2022 00:27:56 +0000 (16:27 -0800)]
ice: Avoid RTNL lock when re-creating auxiliary device

If a call to re-create the auxiliary device happens in a context that has
already taken the RTNL lock, then the call flow that recreates auxiliary
device can hang if there is another attempt to claim the RTNL lock by the
auxiliary driver.

To avoid this, any call to re-create auxiliary devices that comes from
an source that is holding the RTNL lock (e.g. netdev notifier when
interface exits a bond) should execute in a separate thread.  To
accomplish this, add a flag to the PF that will be evaluated in the
service task and dealt with there.

Fixes: f9f5301e7e2d ("ice: Register auxiliary device to provide RDMA")
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Reviewed-by: Jonathan Toppins <jtoppins@redhat.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agoice: Fix KASAN error in LAG NETDEV_UNREGISTER handler
Dave Ertman [Tue, 18 Jan 2022 21:08:20 +0000 (13:08 -0800)]
ice: Fix KASAN error in LAG NETDEV_UNREGISTER handler

Currently, the same handler is called for both a NETDEV_BONDING_INFO
LAG unlink notification as for a NETDEV_UNREGISTER call.  This is
causing a problem though, since the netdev_notifier_info passed has
a different structure depending on which event is passed.  The problem
manifests as a call trace from a BUG: KASAN stack-out-of-bounds error.

Fix this by creating a handler specific to NETDEV_UNREGISTER that only
is passed valid elements in the netdev_notifier_info struct for the
NETDEV_UNREGISTER event.

Also included is the removal of an unbalanced dev_put on the peer_netdev
and related braces.

Fixes: 6a8b357278f5 ("ice: Respond to a NETDEV_UNREGISTER event for LAG")
Signed-off-by: Dave Ertman <david.m.ertman@intel.com>
Acked-by: Jonathan Toppins <jtoppins@redhat.com>
Tested-by: Sunitha Mekala <sunithax.d.mekala@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agoice: fix IPIP and SIT TSO offload
Jesse Brandeburg [Fri, 14 Jan 2022 23:38:39 +0000 (15:38 -0800)]
ice: fix IPIP and SIT TSO offload

The driver was avoiding offload for IPIP (at least) frames due to
parsing the inner header offsets incorrectly when trying to check
lengths.

This length check works for VXLAN frames but fails on IPIP frames
because skb_transport_offset points to the inner header in IPIP
frames, which meant the subtraction of transport_header from
inner_network_header returns a negative value (-20).

With the code before this patch, everything continued to work, but GSO
was being used to segment, causing throughputs of 1.5Gb/s per thread.
After this patch, throughput is more like 10Gb/s per thread for IPIP
traffic.

Fixes: e94d44786693 ("ice: Implement filter sync, NDO operations and bump version")
Signed-off-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Reviewed-by: Paul Menzel <pmenzel@molgen.mpg.de>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agoice: fix an error code in ice_cfg_phy_fec()
Dan Carpenter [Fri, 7 Jan 2022 08:02:06 +0000 (11:02 +0300)]
ice: fix an error code in ice_cfg_phy_fec()

Propagate the error code from ice_get_link_default_override() instead
of returning success.

Fixes: ea78ce4dab05 ("ice: add link lenient and default override support")
Signed-off-by: Dan Carpenter <dan.carpenter@oracle.com>
Tested-by: Gurucharan G <gurucharanx.g@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
2 years agonet/switchdev: use struct_size over open coded arithmetic
Minghao Chi (CGEL ZTE) [Thu, 10 Feb 2022 06:10:08 +0000 (06:10 +0000)]
net/switchdev: use struct_size over open coded arithmetic

Replace zero-length array with flexible-array member and make use
of the struct_size() helper in kmalloc(). For example:

struct switchdev_deferred_item {
    ...
    unsigned long data[];
};

Make use of the struct_size() helper instead of an open-coded version
in order to avoid any potential type mistakes.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Minghao Chi (CGEL ZTE) <chi.minghao@zte.com.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoipv4: Reject again rules with high DSCP values
Guillaume Nault [Thu, 10 Feb 2022 12:24:51 +0000 (13:24 +0100)]
ipv4: Reject again rules with high DSCP values

Commit 563f8e97e054 ("ipv4: Stop taking ECN bits into account in
fib4-rules") replaced the validation test on frh->tos. While the new
test is stricter for ECN bits, it doesn't detect the use of high order
DSCP bits. This would be fine if IPv4 could properly handle them. But
currently, most IPv4 lookups are done with the three high DSCP bits
masked. Therefore, using these bits doesn't lead to the expected
result.

Let's reject such configurations again, so that nobody starts to
use and make any assumption about how the stack handles the three high
order DSCP bits in fib4 rules.

Fixes: 563f8e97e054 ("ipv4: Stop taking ECN bits into account in fib4-rules")
Signed-off-by: Guillaume Nault <gnault@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoocteontx2-pf: Add TC feature for VFs
Subbaraya Sundeep [Thu, 10 Feb 2022 11:51:44 +0000 (17:21 +0530)]
octeontx2-pf: Add TC feature for VFs

This patch adds TC feature for VFs also. When MCAM
rules are allocated for a VF then either TC or ntuple
filters can be used. Below are the commands to use
TC feature for a VF(say lbk0):

devlink dev param set pci/0002:01:00.1 name mcam_count value 16 \
 cmode runtime
ethtool -K lbk0 hw-tc-offload on
ifconfig lbk0 up
tc qdisc add dev lbk0 ingress
tc filter add dev lbk0 parent ffff: protocol ip flower skip_sw \
 dst_mac 98:03:9b:83:aa:12 action police rate 100Mbit burst 5000

Also to modify any fields of the hardware context with
NIX_AQ_INSTOP_WRITE command then corresponding masks of those
fields must be set as per hardware. This was missing in
ingress ratelimiting context. This patch sets those masks also.

Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: make net->dev_unreg_count atomic
Eric Dumazet [Thu, 10 Feb 2022 02:59:32 +0000 (18:59 -0800)]
net: make net->dev_unreg_count atomic

Having to acquire rtnl from netdev_run_todo() for every dismantled
device is not desirable when/if rtnl is under stress.

Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: mpls: Fix GCC 12 warning
Victor Erminpour [Thu, 10 Feb 2022 00:28:38 +0000 (16:28 -0800)]
net: mpls: Fix GCC 12 warning

When building with automatic stack variable initialization, GCC 12
complains about variables defined outside of switch case statements.
Move the variable outside the switch, which silences the warning:

./net/mpls/af_mpls.c:1624:21: error: statement will never be executed [-Werror=switch-unreachable]
  1624 |                 int err;
       |                     ^~~

Signed-off-by: Victor Erminpour <victor.erminpour@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoqed: prevent a fw assert during device shutdown
Venkata Sudheer Kumar Bhavaraju [Wed, 9 Feb 2022 19:28:14 +0000 (11:28 -0800)]
qed: prevent a fw assert during device shutdown

Device firmware can assert if the device shutdown path in driver
encounters an async. events from mfw (processed in
qed_mcp_handle_events()) after qed_mcp_unload_req() returns.
A call to qed_mcp_unload_req() currently marks the device as inactive
and thus stops any new events, but there is a windows where in-flight
events might still be received by the driver.

To prevent this race condition, atomically set QED_MCP_BYPASS_PROC_BIT
in qed_mcp_unload_req() to make sure qed_mcp_handle_events() ignores all
events. Wait for any event that might already be in-process to complete
by monitoring QED_MCP_IN_PROCESSING_BIT.

Signed-off-by: Pravin Kumar Ganesh Dhende <pdhende@marvell.com>
Signed-off-by: Venkata Sudheer Kumar Bhavaraju <vbhavaraju@marvell.com>
Signed-off-by: Alok Prasad <palok@marvell.com>
Signed-off-by: Ariel Elior <aelior@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agodpaa2-eth: unregister the netdev before disconnecting from the PHY
Robert-Ionut Alexa [Wed, 9 Feb 2022 15:57:43 +0000 (17:57 +0200)]
dpaa2-eth: unregister the netdev before disconnecting from the PHY

The netdev should be unregistered before we are disconnecting from the
MAC/PHY so that the dev_close callback is called and the PHY and the
phylink workqueues are actually stopped before we are disconnecting and
destroying the phylink instance.

Fixes: 719479230893 ("dpaa2-eth: add MAC/PHY support through phylink")
Signed-off-by: Robert-Ionut Alexa <robert-ionut.alexa@nxp.com>
Signed-off-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoskbuff: cleanup double word in comment
Tom Rix [Wed, 9 Feb 2022 15:02:42 +0000 (07:02 -0800)]
skbuff: cleanup double word in comment

Remove the second 'to'.

Signed-off-by: Tom Rix <trix@redhat.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: macb: Align the dma and coherent dma masks
Marc St-Amand [Wed, 9 Feb 2022 09:43:25 +0000 (15:13 +0530)]
net: macb: Align the dma and coherent dma masks

Single page and coherent memory blocks can use different DMA masks
when the macb accesses physical memory directly. The kernel is clever
enough to allocate pages that fit into the requested address width.

When using the ARM SMMU, the DMA mask must be the same for single
pages and big coherent memory blocks. Otherwise the translation
tables turn into one big mess.

  [   74.959909] macb ff0e0000.ethernet eth0: DMA bus error: HRESP not OK
  [   74.959989] arm-smmu fd800000.smmu: Unhandled context fault: fsr=0x402, iova=0x3165687460, fsynr=0x20001, cbfrsynra=0x877, cb=1
  [   75.173939] macb ff0e0000.ethernet eth0: DMA bus error: HRESP not OK
  [   75.173955] arm-smmu fd800000.smmu: Unhandled context fault: fsr=0x402, iova=0x3165687460, fsynr=0x20001, cbfrsynra=0x877, cb=1

Since using the same DMA mask does not hurt direct 1:1 physical
memory mappings, this commit always aligns DMA and coherent masks.

Signed-off-by: Marc St-Amand <mstamand@ciena.com>
Signed-off-by: Harini Katakam <harini.katakam@xilinx.com>
Acked-by: Nicolas Ferre <nicolas.ferre@microchip.com>
Tested-by: Conor Dooley <conor.dooley@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge branch 'ping6-cmsg'
David S. Miller [Thu, 10 Feb 2022 15:04:52 +0000 (15:04 +0000)]
Merge branch 'ping6-cmsg'

Jakub Kicinski says:

====================
net: ping6: support basic socket cmsgs

Add support for common SOL_SOCKET cmsgs in ICMPv6 sockets.
Extend the cmsg tests to cover more cmsgs and socket types.

SOL_IPV6 cmsgs to follow.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: net: test standard socket cmsgs across UDP and ICMP sockets
Jakub Kicinski [Thu, 10 Feb 2022 00:36:49 +0000 (16:36 -0800)]
selftests: net: test standard socket cmsgs across UDP and ICMP sockets

Test TIMESTAMPING and TXTIME across UDP / ICMP and IP versions.

Before ICMPv6 support:
  # ./tools/testing/selftests/net/cmsg_time.sh
    Case ICMPv6  - ts cnt returned '0', expected '2'
    Case ICMPv6  - ts0 SCHED returned '', expected 'OK'
    Case ICMPv6  - ts0 SND returned '', expected 'OK'
    Case ICMPv6  - TXTIME abs returned '', expected 'OK'
    Case ICMPv6  - TXTIME rel returned '', expected 'OK'
  FAIL - 5/36 cases failed

After:
  # ./tools/testing/selftests/net/cmsg_time.sh
  OK

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: net: cmsg_sender: support Tx timestamping
Jakub Kicinski [Thu, 10 Feb 2022 00:36:48 +0000 (16:36 -0800)]
selftests: net: cmsg_sender: support Tx timestamping

Support requesting Tx timestamps:

 $ ./cmsg_sender -p i -t -4 $tgt 123 -d 1000
 SCHED ts0 61us
   SND ts0 1071us

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: net: cmsg_sender: support setting SO_TXTIME
Jakub Kicinski [Thu, 10 Feb 2022 00:36:47 +0000 (16:36 -0800)]
selftests: net: cmsg_sender: support setting SO_TXTIME

Add ability to send delayed packets.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: net: cmsg_so_mark: test with SO_MARK set by setsockopt
Jakub Kicinski [Thu, 10 Feb 2022 00:36:46 +0000 (16:36 -0800)]
selftests: net: cmsg_so_mark: test with SO_MARK set by setsockopt

Test if setting SO_MARK with setsockopt works and if cmsg
takes precedence over it.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: net: cmsg_so_mark: test ICMP and RAW sockets
Jakub Kicinski [Thu, 10 Feb 2022 00:36:45 +0000 (16:36 -0800)]
selftests: net: cmsg_so_mark: test ICMP and RAW sockets

Use new capabilities of cmsg_sender to test ICMP and RAW sockets,
previously only UDP was tested.

Before SO_MARK support was added to ICMPv6:

  # ./cmsg_so_mark.sh
   Case ICMP rejection returned 0, expected 1
  FAIL - 1/12 cases failed

After:

  # ./cmsg_so_mark.sh
  OK

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: net: cmsg_sender: support icmp and raw sockets
Jakub Kicinski [Thu, 10 Feb 2022 00:36:44 +0000 (16:36 -0800)]
selftests: net: cmsg_sender: support icmp and raw sockets

Support sending fake ICMP(v6) messages and UDP via RAW sockets.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: net: make cmsg_so_mark ready for more options
Jakub Kicinski [Thu, 10 Feb 2022 00:36:43 +0000 (16:36 -0800)]
selftests: net: make cmsg_so_mark ready for more options

Parametrize the code so that it can support UDP and ICMP
sockets in the future, and more cmsg types.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoselftests: net: rename cmsg_so_mark
Jakub Kicinski [Thu, 10 Feb 2022 00:36:42 +0000 (16:36 -0800)]
selftests: net: rename cmsg_so_mark

Rename the file in prep for generalization.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: ping6: support setting socket options via cmsg
Jakub Kicinski [Thu, 10 Feb 2022 00:36:41 +0000 (16:36 -0800)]
net: ping6: support setting socket options via cmsg

Minor reordering of the code and a call to sock_cmsg_send()
gives us support for setting the common socket options via
cmsg (the usual ones - SO_MARK, SO_TIMESTAMPING_OLD, SCM_TXTIME).

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: ping6: support packet timestamping
Jakub Kicinski [Thu, 10 Feb 2022 00:36:40 +0000 (16:36 -0800)]
net: ping6: support packet timestamping

Nothing prevents the user from requesting timestamping
on ping6 sockets, yet timestamps are not going to be reported.
Plumb the flags through.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agonet: ping6: remove a pr_debug() statement
Jakub Kicinski [Thu, 10 Feb 2022 00:36:39 +0000 (16:36 -0800)]
net: ping6: remove a pr_debug() statement

We have ftrace and BPF today, there's no need for printing arguments
at the start of a function.

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Reviewed-by: David Ahern <dsahern@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge tag 'mt76-for-kvalo-2022-02-04' of https://github.com/nbd168/wireless into...
Kalle Valo [Thu, 10 Feb 2022 14:36:03 +0000 (16:36 +0200)]
Merge tag 'mt76-for-kvalo-2022-02-04' of https://github.com/nbd168/wireless into main

mt76 patches for 5.18

- mt7915 mcu code cleanup
- mt7916 support
- fixes for SDIO support
- fixes for DFS
- power management fixes
- stability improvements
- background radar detection support

2 years agoMerge tag 'ieee802154-for-davem-2022-02-10' of git://git.kernel.org/pub/scm/linux...
David S. Miller [Thu, 10 Feb 2022 14:28:04 +0000 (14:28 +0000)]
Merge tag 'ieee802154-for-davem-2022-02-10' of git://git./linux/kernel/git/sschmidt/wpan-next

Stefan Schmidt says:

====================
pull-request: ieee802154-next 2022-02-10

An update from ieee802154 for your *net-next* tree.

There is more ongoing in ieee802154 than usual. This will be the first pull
request for this cycle, but I expect one more. Depending on review and rework
times.

Pavel Skripkin ported the atusb driver over to the new USB api to avoid unint
problems as well as making use of the modern api without kmalloc() needs in he
driver.

Miquel Raynal landed some changes to ensure proper frame checksum checking with
hwsim, documenting our use of wake and stop_queue and eliding a magic value by
using the proper define.

David Girault documented the address struct used in ieee802154.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agoMerge tag 'mips-fixes-5.17_3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips...
Linus Torvalds [Thu, 10 Feb 2022 13:52:00 +0000 (05:52 -0800)]
Merge tag 'mips-fixes-5.17_3' of git://git./linux/kernel/git/mips/linux

Pull MIPS fix from Thomas Bogendoerfer:
 "Device tree fix for Ingenic CI20"

* tag 'mips-fixes-5.17_3' of git://git.kernel.org/pub/scm/linux/kernel/git/mips/linux:
  MIPS: DTS: CI20: fix how ddc power is enabled

2 years agoMerge tag 'audit-pr-20220209' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoor...
Linus Torvalds [Thu, 10 Feb 2022 13:43:43 +0000 (05:43 -0800)]
Merge tag 'audit-pr-20220209' of git://git./linux/kernel/git/pcmoore/audit

Pull audit fix from Paul Moore:
 "Another audit fix, this time a single rather small but important fix
  for an oops/page-fault caused by improperly accessing userspace
  memory"

* tag 'audit-pr-20220209' of git://git.kernel.org/pub/scm/linux/kernel/git/pcmoore/audit:
  audit: don't deref the syscall args when checking the openat2 open_how::flags

2 years agotipc: improve size validations for received domain records
Jon Maloy [Sat, 5 Feb 2022 19:11:18 +0000 (14:11 -0500)]
tipc: improve size validations for received domain records

The function tipc_mon_rcv() allows a node to receive and process
domain_record structs from peer nodes to track their views of the
network topology.

This patch verifies that the number of members in a received domain
record does not exceed the limit defined by MAX_MON_DOMAIN, something
that may otherwise lead to a stack overflow.

tipc_mon_rcv() is called from the function tipc_link_proto_rcv(), where
we are reading a 32 bit message data length field into a uint16.  To
avert any risk of bit overflow, we add an extra sanity check for this in
that function.  We cannot see that happen with the current code, but
future designers being unaware of this risk, may introduce it by
allowing delivery of very large (> 64k) sk buffers from the bearer
layer.  This potential problem was identified by Eric Dumazet.

This fixes CVE-2022-0435

Reported-by: Samuel Page <samuel.page@appgate.com>
Reported-by: Eric Dumazet <edumazet@google.com>
Fixes: 35c55c9877f8 ("tipc: add neighbor monitoring framework")
Signed-off-by: Jon Maloy <jmaloy@redhat.com>
Reviewed-by: Xin Long <lucien.xin@gmail.com>
Reviewed-by: Samuel Page <samuel.page@appgate.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Linus Torvalds <torvalds@linux-foundation.org>
2 years agoMerge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next...
David S. Miller [Thu, 10 Feb 2022 11:00:13 +0000 (11:00 +0000)]
Merge branch '100GbE' of git://git./linux/kernel/git/tnguy/next-queue

Tony Nguyen says:

====================
100GbE Intel Wired LAN Driver Updates 2022-02-09

This series contains updates to ice driver only.

Brett adds support for QinQ. This begins with code refactoring and
re-organization of VLAN configuration functions to allow for
introduction of VSI VLAN ops to enable setting and calling of
respective operations based on device support of single or double
VLANs. Implementations are added for outer VLAN support.

To support QinQ, the device must be set to double VLAN mode (DVM).
In order for this to occur, the DDP package and NVM must also support
DVM. Functions to determine compatibility and properly configure the
device are added as well as setting the proper bits to advertise and
utilize the proper offloads. Support for VIRTCHNL_VF_OFFLOAD_VLAN_V2
is also included to allow for VF to negotiate and utilize this
functionality.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2 years agobrcmfmac: of: remove redundant variable len
Colin Ian King [Mon, 7 Feb 2022 13:33:29 +0000 (13:33 +0000)]
brcmfmac: of: remove redundant variable len

The variable len is being assigned bit is never used. The variable
and the strlen call are redundant and can be removed.

Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220207133329.336664-1-colin.i.king@gmail.com
2 years agobrcmfmac: p2p: Replace one-element arrays with flexible-array members
Gustavo A. R. Silva [Fri, 4 Feb 2022 23:22:28 +0000 (17:22 -0600)]
brcmfmac: p2p: Replace one-element arrays with flexible-array members

There is a regular need in the kernel to provide a way to declare having
a dynamically sized set of trailing elements in a structure. Kernel code
should always use “flexible array members”[1] for these cases. The older
style of one-element or zero-length arrays should no longer be used[2].

This helps with the ongoing efforts to globally enable -Warray-bounds
and get us closer to being able to tighten the FORTIFY_SOURCE routines
on memcpy().

This issue was found with the help of Coccinelle and audited and fixed,
manually.

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.16/process/deprecated.html#zero-length-and-one-element-arrays

Link: https://github.com/KSPP/linux/issues/79
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220204232228.GA442895@embeddedor
2 years agortw89: coex: set EN bit to PLT register
Ping-Ke Shih [Tue, 8 Feb 2022 08:27:51 +0000 (16:27 +0800)]
rtw89: coex: set EN bit to PLT register

B_AX_PLT_EN is to enable polluted mechanism. If it is enabled and
gnt_bt = 1 while wlan TX, B_AX_BT_PLT_PKT_CNT counter will increase,
but TX counter to BB will not. Without this bit BTCoex mechanism might
have some problems.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220208082751.43553-1-pkshih@realtek.com
2 years agortw89: recover rates of rate adaptive mechanism
Chien-Hsun Liao [Tue, 8 Feb 2022 08:24:27 +0000 (16:24 +0800)]
rtw89: recover rates of rate adaptive mechanism

Some APs like CMW270 only support one phyrate and the function
rtw89_phy_ra_mask_rssi could disable that rate. To fix such problem, we
restore the rate mask if we find that the rate_mask is empty.
Also, apply missed legacy rates from sta->supp_rates[].

Signed-off-by: Chien-Hsun Liao <ben.liao@realtek.com>
Signed-off-by: Kuan-Chung Chen <damon.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220208082427.42433-3-pkshih@realtek.com
2 years agortw88: recover rates of rate adaptive mechanism
Chien-Hsun Liao [Tue, 8 Feb 2022 08:24:26 +0000 (16:24 +0800)]
rtw88: recover rates of rate adaptive mechanism

Some APs like CMW270 only support one phyrate and the function
rtw_update_rate_mask could disable that rate. To fix such problem, we
restore the rate mask if we find that the rate_mask is empty.

Signed-off-by: Chien-Hsun Liao <ben.liao@realtek.com>
Signed-off-by: Kuan-Chung Chen <damon.chen@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220208082427.42433-2-pkshih@realtek.com
2 years agortw89: declare AP mode support
Ping-Ke Shih [Mon, 7 Feb 2022 06:39:00 +0000 (14:39 +0800)]
rtw89: declare AP mode support

Things are ready for AP mode, so declare this driver can support it.

Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Signed-off-by: Kalle Valo <kvalo@kernel.org>
Link: https://lore.kernel.org/r/20220207063900.43643-8-pkshih@realtek.com