linux-2.6-microblaze.git
3 years agoMerge tag 'mt76-for-kvalo-2021-01-29' of https://github.com/nbd168/wireless
Kalle Valo [Mon, 8 Feb 2021 17:04:02 +0000 (19:04 +0200)]
Merge tag 'mt76-for-kvalo-2021-01-29' of https://github.com/nbd168/wireless

mt76 patches for 5.12

* add new mt7921e driver
* factor out common code shared between 7615/7663 and 7921
* performance optimizations
* 7915 dbdc fixes
* 802.11 encap offload support
* support for multiple pcie gen1 host interfaces on 7915
* 7915 testmode support
* bugfixes
* testmode support enhancements
* endian fixes
* 7915 txbf support

3 years agoMerge tag 'iwlwifi-next-for-kalle-2021-02-05' of git://git.kernel.org/pub/scm/linux...
Kalle Valo [Mon, 8 Feb 2021 16:52:00 +0000 (18:52 +0200)]
Merge tag 'iwlwifi-next-for-kalle-2021-02-05' of git://git./linux/kernel/git/iwlwifi/iwlwifi-next

iwlwifi patches intended for v5.12

* Check FW notification sizes for robustness;
* Improvements in the NAPI implementation;
* Implement a workaround for CCA-EXT;
* Add new FW API support;
* Fix a CSA bug;
* Implement PHY integration version parsing;
* A bit of refactoring;
* One more CSA bug fix, this time in the AP side;
* Support for new So devices and a bit of reorg;
* Per Platform Antenna Gain (PPAG) fixes and improvements;
* Improvements in the debug framework;
* Some other clean-ups and small fixes.

# gpg: Signature made Fri 05 Feb 2021 12:04:21 PM EET using RSA key ID 1A3CC5FA
# gpg: Good signature from "Luciano Roth Coelho (Luca) <luca@coelho.fi>"
# gpg:                 aka "Luciano Roth Coelho (Intel) <luciano.coelho@intel.com>"

3 years agossb: Use true and false for bool variable
Jiapeng Chong [Fri, 5 Feb 2021 06:56:39 +0000 (14:56 +0800)]
ssb: Use true and false for bool variable

Fix the following coccicheck warnings:

./include/linux/ssb/ssb_driver_gige.h:89:8-9: WARNING: return of 0/1 in
function 'ssb_gige_one_dma_at_once' with return type bool.

./include/linux/ssb/ssb_driver_gige.h:79:8-9: WARNING: return of 0/1 in
function 'ssb_gige_have_roboswitch' with return type bool.

./include/linux/ssb/ssb_driver_gige.h:182:8-9: WARNING: return of 0/1 in
function 'ssb_gige_must_flush_posted_writes' with return type bool.

./include/linux/ssb/ssb_driver_gige.h:178:8-9: WARNING: return of 0/1 in
function 'ssb_gige_one_dma_at_once' with return type bool.

./include/linux/ssb/ssb_driver_gige.h:174:8-9: WARNING: return of 0/1 in
function 'ssb_gige_have_roboswitch' with return type bool.

./include/linux/ssb/ssb_driver_gige.h:170:8-9: WARNING: return of 0/1 in
function 'ssb_gige_is_rgmii' with return type bool.

./include/linux/ssb/ssb_driver_gige.h:162:8-9: WARNING: return of 0/1 in
function 'pdev_is_ssb_gige_core' with return type bool.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Acked-by: Michael Büsch <m@bues.ch>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1612508199-92282-1-git-send-email-jiapeng.chong@linux.alibaba.com
3 years agomwl8k: fix alignment constraints
Arnd Bergmann [Thu, 4 Feb 2021 16:28:04 +0000 (17:28 +0100)]
mwl8k: fix alignment constraints

sturct mwl8k_dma_data contains a ieee80211_hdr structure, which is required to
have at least two byte alignment, and this conflicts with the __packed
attribute:

vers/net/wireless/marvell/mwl8k.c:811:1: warning: alignment 1 of 'struct mwl8k_dma_data' is less than 2 [-Wpacked-not-aligned]

Mark mwl8k_dma_data itself as having two-byte alignment to ensure the
inner structure is properly aligned.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210204162813.3159319-1-arnd@kernel.org
3 years agowl3501: fix alignment constraints
Arnd Bergmann [Thu, 4 Feb 2021 16:26:43 +0000 (17:26 +0100)]
wl3501: fix alignment constraints

struct wl3501_80211_tx_hdr contains a ieee80211_hdr structure, which is
required to have at least two byte alignment, and this conflicts with
the __packed attribute:

wireless/wl3501.h:553:1: warning: alignment 1 of 'struct wl3501_80211_tx_hdr' is less than 2 [-Wpacked-not-aligned]

Mark wl3501_80211_tx_hdr itself as having two-byte alignment to ensure the
inner structure is properly aligned.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210204162653.3113749-1-arnd@kernel.org
3 years agort2800usb: add Sweex LW163V2 id's
Stanislaw Gruszka [Thu, 4 Feb 2021 10:19:02 +0000 (11:19 +0100)]
rt2800usb: add Sweex LW163V2 id's

Add support for Sweex LW163V2 device.

Signed-off-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210204101902.199590-1-stf_xl@wp.pl
3 years agoiwlegacy: 4965-mac: Simplify the calculation of variables
Jiapeng Chong [Thu, 4 Feb 2021 08:00:08 +0000 (16:00 +0800)]
iwlegacy: 4965-mac: Simplify the calculation of variables

Fix the following coccicheck warnings:

./drivers/net/wireless/intel/iwlegacy/4965-mac.c:2596:54-56: WARNING !A
|| A && B is equivalent to !A || B.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Acked-by: Stanislaw Gruszka <stf_xl@wp.pl>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/1612425608-40450-1-git-send-email-jiapeng.chong@linux.alibaba.com
3 years agort2x00: remove duplicate word and fix typo in comment
wengjianfeng [Thu, 4 Feb 2021 00:51:19 +0000 (08:51 +0800)]
rt2x00: remove duplicate word and fix typo in comment

remove duplicate word 'we' in comment
change 'then' to 'than' in comment

Signed-off-by: wengjianfeng <wengjianfeng@yulong.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210204005119.18060-1-samirweng1979@163.com
3 years agorsi: remove redundant assignment
wengjianfeng [Wed, 3 Feb 2021 06:27:17 +0000 (14:27 +0800)]
rsi: remove redundant assignment

INVALID_QUEUE has been used as a return value,it is not necessary to
assign it to q_num,so just return INVALID_QUEUE.

Signed-off-by: wengjianfeng <wengjianfeng@yulong.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210203062717.1228-1-samirweng1979@163.com
3 years agomwl8k: assign value when defining variables
wengjianfeng [Wed, 3 Feb 2021 06:16:25 +0000 (14:16 +0800)]
mwl8k: assign value when defining variables

define refilled and then assign value to it, which should do
that at the same time.

Signed-off-by: wengjianfeng <wengjianfeng@yulong.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210203061625.588-1-samirweng1979@163.com
3 years agowl1251: cmd: remove redundant assignment
wengjianfeng [Wed, 3 Feb 2021 06:03:06 +0000 (14:03 +0800)]
wl1251: cmd: remove redundant assignment

-ENOMEM has been used as a return value,it is not necessary to
assign it, and if kzalloc fail,not need free it,so just return
-ENOMEM when kzalloc fail.

Signed-off-by: wengjianfeng <wengjianfeng@yulong.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210203060306.2832-1-samirweng1979@163.com
3 years agomwifiex: Report connected BSS with cfg80211_connect_bss()
Yen-lin Lai [Mon, 1 Feb 2021 07:06:49 +0000 (15:06 +0800)]
mwifiex: Report connected BSS with cfg80211_connect_bss()

When a network is moved or reconfigured on the different channel, there
can be multiple BSSes with the same BSSID and SSID in scan result
before the old one expires. Then, it can cause cfg80211_connect_result
to map current_bss to a bss with the wrong channel.

Let mwifiex_cfg80211_assoc return the selected BSS and then the caller
can report it cfg80211_connect_bss.

Signed-off-by: Yen-lin Lai <yenlinlai@chromium.org>
Reviewed-by: Brian Norris <briannorris@chromium.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210201070649.1667209-1-yenlinlai@chromium.org
3 years agortl8xxxu: remove unused assignment value
wengjianfeng [Sat, 30 Jan 2021 07:23:10 +0000 (15:23 +0800)]
rtl8xxxu: remove unused assignment value

at first, ret was assigned to zero, but later assigned to
a funciton,so the assignment to zero is no use, which can
simple be removed instead.

Signed-off-by: wengjianfeng <wengjianfeng@yulong.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210130072310.17252-1-samirweng1979@163.com
3 years agolibertas: remove redundant initialization of variable ret
Colin Ian King [Thu, 28 Jan 2021 16:22:02 +0000 (16:22 +0000)]
libertas: remove redundant initialization of variable ret

The variable ret 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: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210128162202.642848-1-colin.king@canonical.com
3 years agoatmel: at76c50x: use DEFINE_MUTEX() for mutex lock
Zheng Yongjun [Thu, 24 Dec 2020 13:24:56 +0000 (21:24 +0800)]
atmel: at76c50x: use DEFINE_MUTEX() for mutex lock

mutex lock can be initialized automatically with DEFINE_MUTEX()
rather than explicitly calling mutex_init().

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20201224132456.31341-1-zhengyongjun3@huawei.com
3 years agobrcmsmac: fix alignment constraints
Arnd Bergmann [Thu, 4 Feb 2021 16:28:35 +0000 (17:28 +0100)]
brcmsmac: fix alignment constraints

sturct d11txh contains a ieee80211_rts structure, which is required to
have at least two byte alignment, and this conflicts with the __packed
attribute:

drivers/net/wireless/broadcom/brcm80211/brcmsmac/d11.h:786:1: warning: alignment 1 of 'struct d11txh' is less than 2 [-Wpacked-not-aligned]

Mark d11txh itself as having two-byte alignment to ensure the
inner structure is properly aligned.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210204162852.3219572-1-arnd@kernel.org
3 years agobrcmfmac: Add DMI nvram filename quirk for Voyo winpad A15 tablet
Hans de Goede [Fri, 29 Jan 2021 17:14:13 +0000 (18:14 +0100)]
brcmfmac: Add DMI nvram filename quirk for Voyo winpad A15 tablet

The Voyo winpad A15 tablet contains quite generic names in the sys_vendor
and product_name DMI strings, without this patch brcmfmac will try to load:
rcmfmac4330-sdio.To be filled by O.E.M.-To be filled by O.E.M..txt
as nvram file which is a bit too generic.

Add a DMI quirk so that a unique and clearly identifiable nvram file name
is used on the Voyo winpad A15 tablet.

While preparing a matching linux-firmware update I noticed that the nvram
is identical to the nvram used on the Prowise-PT301 tablet, so the new DMI
quirk entry simply points to the already existing Prowise-PT301 nvram file.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210129171413.139880-2-hdegoede@redhat.com
3 years agobrcmfmac: Add DMI nvram filename quirk for Predia Basic tablet
Hans de Goede [Fri, 29 Jan 2021 17:14:12 +0000 (18:14 +0100)]
brcmfmac: Add DMI nvram filename quirk for Predia Basic tablet

The Predia Basic tablet contains quite generic names in the sys_vendor and
product_name DMI strings, without this patch brcmfmac will try to load:
brcmfmac43340-sdio.Insyde-CherryTrail.txt as nvram file which is a bit
too generic.

Add a DMI quirk so that a unique and clearly identifiable nvram file name
is used on the Predia Basic tablet.

Signed-off-by: Hans de Goede <hdegoede@redhat.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210129171413.139880-1-hdegoede@redhat.com
3 years agortw88: 8821c: support RFE type2 wifi NIC
Guo-Feng Fan [Tue, 2 Feb 2021 05:50:12 +0000 (13:50 +0800)]
rtw88: 8821c: support RFE type2 wifi NIC

RFE type2 is a new NIC which has one RF antenna shares with BT.
Update phy parameter to verstion V57 to allow initial procedure
to load extra AGC table for sharing antenna NIC.

Signed-off-by: Guo-Feng Fan <vincent_fann@realtek.com>
Signed-off-by: Ping-Ke Shih <pkshih@realtek.com>
Tested-by: Kai-Heng Feng <kai.heng.feng@canonical.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210202055012.8296-4-pkshih@realtek.com
3 years agortw88: 8821c: Correct CCK RSSI
Guo-Feng Fan [Tue, 2 Feb 2021 05:50:11 +0000 (13:50 +0800)]
rtw88: 8821c: Correct CCK RSSI

Incorrect CCK RSSI may cause periodically scan from upper layer.

8821c phy status does NOT has actual value of CCK power. It provides only
lna and vga index. Driver have to use these indexes to calculate
actual RSSI.

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/20210202055012.8296-3-pkshih@realtek.com
3 years agortw88: coex: 8821c: correct antenna switch function
Guo-Feng Fan [Tue, 2 Feb 2021 05:50:10 +0000 (13:50 +0800)]
rtw88: coex: 8821c: correct antenna switch function

This patch fixes a defect that uses incorrect function to access
registers. Use 8 and 32 bit access function to access 8 and 32 bit long
data respectively.

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/20210202055012.8296-2-pkshih@realtek.com
3 years agortlwifi: rtl8192se: remove redundant initialization of variable rtstatus
Colin Ian King [Thu, 28 Jan 2021 17:10:48 +0000 (17:10 +0000)]
rtlwifi: rtl8192se: remove redundant initialization of variable rtstatus

The variable rtstatu 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>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210128171048.644669-1-colin.king@canonical.com
3 years agortlwifi: use tasklet_setup to initialize rx_work_tasklet
Emil Renner Berthing [Tue, 26 Jan 2021 17:15:50 +0000 (18:15 +0100)]
rtlwifi: use tasklet_setup to initialize rx_work_tasklet

In commit d3ccc14dfe95 most of the tasklets in this driver was
updated to the new API. However for the rx_work_tasklet only the
type of the callback was changed from
  void _rtl_rx_work(unsigned long data)
to
  void _rtl_rx_work(struct tasklet_struct *t).

The initialization of rx_work_tasklet was still open-coded and the
function pointer just cast into the old type, and hence nothing sets
rx_work_tasklet.use_callback = true and the callback was still called as

  t->func(t->data);

with uninitialized/zero t->data.

Commit 6b8c7574a5f8 changed the casting of _rtl_rx_work a bit and
initialized t->data to a pointer to the tasklet cast to an unsigned
long.

This way calling t->func(t->data) might actually work through all the
casting, but it still doesn't update the code to use the new tasklet
API.

Let's use the new tasklet_setup to initialize rx_work_tasklet properly
and set rx_work_tasklet.use_callback = true so that the callback is
called as

  t->callback(t);

without all the casting.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
Link: https://lore.kernel.org/r/20210126171550.3066-1-kernel@esmil.dk
3 years agoMerge ath-next from git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/ath.git
Kalle Valo [Mon, 8 Feb 2021 10:06:53 +0000 (12:06 +0200)]
Merge ath-next from git://git./linux/kernel/git/kvalo/ath.git

ath.git patches for v5.12. Major changes:

ath10k

* support setting SAR limits via nl80211

3 years agoMerge branch '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next...
Jakub Kicinski [Sun, 7 Feb 2021 00:10:19 +0000 (16:10 -0800)]
Merge branch '100GbE' of git://git./linux/kernel/git/tnguy/next-queue

Tony Nguyen says:

====================
100GbE Intel Wired LAN Driver Updates 2021-02-05

This series contains updates to ice driver only.

Jake adds adds reporting of timeout length during devlink flash and
implements support to report devlink info regarding the version of
firmware that is stored (downloaded) to the device, but is not yet active.
ice_devlink_info_get will report "stored" versions when there is no
pending flash update. Version info includes the UNDI Option ROM, the
Netlist module, and the fw.bundle_id.

Gustavo A. R. Silva replaces a one-element array to flexible-array
member.

Bruce utilizes flex_array_size() helper and removes dead code on a check
for a condition that can't occur.

v2:
* removed security revision implementation, and re-ordered patches to
account for this removal
* squashed patches implementing ice_read_flash_module to avoid patches
refactoring the implementation of a previous patch in the series
* modify ice_devlink_info_get to always report "stored" versions instead
of only reporting them when a pending flash update is ready.

* '100GbE' of git://git.kernel.org/pub/scm/linux/kernel/git/tnguy/next-queue:
  ice: remove dead code
  ice: use flex_array_size where possible
  ice: Replace one-element array with flexible-array member
  ice: display stored UNDI firmware version via devlink info
  ice: display stored netlist versions via devlink info
  ice: display some stored NVM versions via devlink info
  ice: introduce function for reading from flash modules
  ice: cache NVM module bank information
  ice: introduce context struct for info report
  ice: create flash_info structure and separate NVM version
  ice: report timeout length for erasing during devlink flash
====================

Link: https://lore.kernel.org/r/20210206044101.636242-1-anthony.l.nguyen@intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next
Jakub Kicinski [Sat, 6 Feb 2021 23:34:22 +0000 (15:34 -0800)]
Merge git://git./linux/kernel/git/pablo/nf-next

Pablo Neira Ayuso says:

====================
Netfilter/IPVS updates for net-next

1) Remove indirection and use nf_ct_get() instead from nfnetlink_log
   and nfnetlink_queue, from Florian Westphal.

2) Add weighted random twos choice least-connection scheduling for IPVS,
   from Darby Payne.

3) Add a __hash placeholder in the flow tuple structure to identify
   the field to be included in the rhashtable key hash calculation.

4) Add a new nft_parse_register_load() and nft_parse_register_store()
   to consolidate register load and store in the core.

5) Statify nft_parse_register() since it has no more module clients.

6) Remove redundant assignment in nft_cmp, from Colin Ian King.

* git://git.kernel.org/pub/scm/linux/kernel/git/pablo/nf-next:
  netfilter: nftables: remove redundant assignment of variable err
  netfilter: nftables: statify nft_parse_register()
  netfilter: nftables: add nft_parse_register_store() and use it
  netfilter: nftables: add nft_parse_register_load() and use it
  netfilter: flowtable: add hash offset field to tuple
  ipvs: add weighted random twos choice algorithm
  netfilter: ctnetlink: remove get_ct indirection
====================

Link: https://lore.kernel.org/r/20210206015005.23037-1-pablo@netfilter.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agor8169: don't try to disable interrupts if NAPI is scheduled already
Heiner Kallweit [Fri, 5 Feb 2021 21:48:53 +0000 (22:48 +0100)]
r8169: don't try to disable interrupts if NAPI is scheduled already

There's no benefit in trying to disable interrupts if NAPI is
scheduled already. This allows us to save a PCI write in this case.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Link: https://lore.kernel.org/r/78c7f2fb-9772-1015-8c1d-632cbdff253f@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet/packet: Improve the comment about LL header visibility criteria
Xie He [Fri, 5 Feb 2021 22:41:24 +0000 (14:41 -0800)]
net/packet: Improve the comment about LL header visibility criteria

The "dev_has_header" function, recently added in
commit d549699048b4 ("net/packet: fix packet receive on L3 devices
without visible hard header"),
is more accurate as criteria for determining whether a device exposes
the LL header to upper layers, because in addition to dev->header_ops,
it also checks for dev->header_ops->create.

When transmitting an skb on a device, dev_hard_header can be called to
generate an LL header. dev_hard_header will only generate a header if
dev->header_ops->create is present.

Signed-off-by: Xie He <xie.he.0141@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Link: https://lore.kernel.org/r/20210205224124.21345-1-xie.he.0141@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge branch 'net-ipa-a-mix-of-small-improvements'
Jakub Kicinski [Sat, 6 Feb 2021 22:56:22 +0000 (14:56 -0800)]
Merge branch 'net-ipa-a-mix-of-small-improvements'

Alex Elder says:

====================
net: ipa: a mix of small improvements

Version 2 of this series restructures a couple of the changed
functions (in patches 1 and 2) to avoid blocks of indented code
by returning early when possible, as suggested by Jakub.  The
description of the first patch was changed as a result, to better
reflect what the updated patch does.  It also fixes one spot I
identified when updating the code, where gsi_channel_stop() was
doing the wrong thing on error.

The original description for this series is below.

This series contains a sort of unrelated set of code cleanups.

The first two are things I wanted to do in a series that updated
some NAPI code recently.  I didn't want to change things in a way
that affected existing testing so I set these aside for later
(i.e., now).

The third makes a change to event ring handling that's similar to
what was done a while back for channels.  There's little benefit to
cacheing the current state of an event ring, so with this we'll just
fetch the state from hardware whenever we need it.

The fourth patch removes the definitions of two unused symbols.

The fifth replaces a count that is always 0 or 1 with a Boolean.

The sixth removes a build-time validation check that doesn't really
provide benefit.

And the last one fixes a problem (in two spots) that could cause a
build-time check to fail "bogusly".
====================

Link: https://lore.kernel.org/r/20210205221100.1738-1-elder@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: ipa: avoid field overflow
Alex Elder [Fri, 5 Feb 2021 22:11:00 +0000 (16:11 -0600)]
net: ipa: avoid field overflow

It's possible that the length passed to ipa_header_size_encoded()
is larger than what can be represented by the HDR_LEN field alone
(starting with IPA v4.5).  If we attempted that, u32_encode_bits()
would trigger a build-time error.

Avoid this problem by masking off high-order bits of the value
encoded as the lower portion of the header length.

The same sort of problem exists in ipa_metadata_offset_encoded(),
so implement the same fix there.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: ipa: get rid of status size constraint
Alex Elder [Fri, 5 Feb 2021 22:10:59 +0000 (16:10 -0600)]
net: ipa: get rid of status size constraint

There is a build-time check that the packet status structure is a
multiple of 4 bytes in size.  It's not clear where that constraint
comes from, but the structure defines what hardware provides so its
definition won't change.  Get rid of the check; it adds no value.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: ipa: use a Boolean rather than count when replenishing
Alex Elder [Fri, 5 Feb 2021 22:10:58 +0000 (16:10 -0600)]
net: ipa: use a Boolean rather than count when replenishing

The count argument to ipa_endpoint_replenish() is only ever 0 or 1,
and always will be (because we always handle each receive buffer in
a single transaction).  Rename the argument to be add_one and change
it to be Boolean.

Update the function description to reflect the current code.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: ipa: remove two unused register definitions
Alex Elder [Fri, 5 Feb 2021 22:10:57 +0000 (16:10 -0600)]
net: ipa: remove two unused register definitions

We do not support inter-EE channel or event ring commands.  Inter-EE
interrupts are disabled (and never re-enabled) for all channels and
event rings, so we have no need for the GSI registers that clear
those interrupt conditions.  So remove their definitions.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: ipa: do not cache event ring state
Alex Elder [Fri, 5 Feb 2021 22:10:56 +0000 (16:10 -0600)]
net: ipa: do not cache event ring state

An event ring's state only needs to be known when it is allocated,
reset, or deallocated.  We check an event ring's state both before
and after performing an event ring control command that changes
its state.  These are only issued at startup and shutdown, so there
is very little value in caching the state.

Stop recording a copy of the channel's last known state, and instead
fetch the true state from hardware whenever it's needed.  In such
cases, *do* record the state in a local variable, in case an error
message reports it (so the value reported is the value seen).

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: ipa: synchronize NAPI only for suspend
Alex Elder [Fri, 5 Feb 2021 22:10:55 +0000 (16:10 -0600)]
net: ipa: synchronize NAPI only for suspend

When stopping a channel, gsi_channel_stop() will ensure NAPI
polling is complete when it calls napi_disable().  So there is no
need to call napi_synchronize() in that case.

Move the call to napi_synchronize() out of __gsi_channel_stop()
and into gsi_channel_suspend(), so it's only used where needed.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: ipa: move mutex calls into __gsi_channel_stop()
Alex Elder [Fri, 5 Feb 2021 22:10:54 +0000 (16:10 -0600)]
net: ipa: move mutex calls into __gsi_channel_stop()

Move the mutex calls out of gsi_channel_stop_retry() and into
__gsi_channel_stop(), to make the latter more semantically similar
to __gsi_channel_start().

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge branch 'lag-offload-for-ocelot-dsa-switches'
Jakub Kicinski [Sat, 6 Feb 2021 22:51:53 +0000 (14:51 -0800)]
Merge branch 'lag-offload-for-ocelot-dsa-switches'

Vladimir Oltean says:

====================
LAG offload for Ocelot DSA switches

This patch series reworks the ocelot switchdev driver such that it could
share the same implementation for LAG offload as the felix DSA driver.

Testing has been done in the following topology:

         +----------------------------------+
         | Board 1         br0              |
         |             +---------+          |
         |            /           \         |
         |            |           |         |
         |            |         bond0       |
         |            |        +-----+      |
         |            |       /       \     |
         |  eno0     swp0    swp1    swp2   |
         +---|--------|-------|-------|-----+
             |        |       |       |
             +--------+       |       |
               Cable          |       |
                         Cable|       |Cable
               Cable          |       |
             +--------+       |       |
             |        |       |       |
         +---|--------|-------|-------|-----+
         |  eno0     swp0    swp1    swp2   |
         |            |       \       /     |
         |            |        +-----+      |
         |            |         bond0       |
         |            |           |         |
         |            \           /         |
         |             +---------+          |
         | Board 2         br0              |
         +----------------------------------+

The same script can be run on both Board 1 and Board 2 to set this up:

ip link del bond0
ip link add bond0 type bond mode balance-xor miimon 1
OR
ip link add bond0 type bond mode 802.3ad
ip link set swp1 down && ip link set swp1 master bond0 && ip link set swp1 up
ip link set swp2 down && ip link set swp2 master bond0 && ip link set swp2 up
ip link del br0
ip link add br0 type bridge
ip link set bond0 master br0
ip link set swp0 master br0

Then traffic can be tested between eno0 of Board 1 and eno0 of Board 2.
====================

Link: https://lore.kernel.org/r/20210205220221.255646-1-olteanv@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: dsa: felix: propagate the LAG offload ops towards the ocelot lib
Vladimir Oltean [Fri, 5 Feb 2021 22:02:21 +0000 (00:02 +0200)]
net: dsa: felix: propagate the LAG offload ops towards the ocelot lib

The ocelot switch has been supporting LAG offload since its initial
commit, however felix could not make use of that, due to lack of a LAG
abstraction in DSA. Now that we have that, let's forward DSA's calls
towards the ocelot library, who will deal with setting up the bonding.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: dsa: make assisted_learning_on_cpu_port bypass offloaded LAG interfaces
Vladimir Oltean [Fri, 5 Feb 2021 22:02:20 +0000 (00:02 +0200)]
net: dsa: make assisted_learning_on_cpu_port bypass offloaded LAG interfaces

Given the following topology, and focusing only on Box A:

         Box A
         +----------------------------------+
         | Board 1         br0              |
         |             +---------+          |
         |            /           \         |
         |            |           |         |
         |            |         bond0       |
         |            |        +-----+      |
         |192.168.1.1 |       /       \     |
         |  eno0     swp0    swp1    swp2   |
         +---|--------|-------|-------|-----+
             |        |       |       |
             +--------+       |       |
               Cable          |       |
                         Cable|       |Cable
               Cable          |       |
             +--------+       |       |
             |        |       |       |
         +---|--------|-------|-------|-----+
         |  eno0     swp0    swp1    swp2   |
         |192.168.1.2 |       \       /     |
         |            |        +-----+      |
         |            |         bond0       |
         |            |           |         |
         |            \           /         |
         |             +---------+          |
         | Board 2         br0              |
         +----------------------------------+
         Box B

The assisted_learning_on_cpu_port logic will see that swp0 is bridged
with a "foreign interface" (bond0) and will therefore install all
addresses learnt by the software bridge towards bond0 (including the
address of eno0 on Box B) as static addresses towards the CPU port.

But that's not what we want - bond0 is not really a "foreign interface"
but one we can offload including L2 forwarding from/towards it. So we
need to refine our logic for assisted learning such that, whenever we
see an address learnt on a non-DSA interface, we search through the tree
for any port that offloads that non-DSA interface.

Some confusion might arise as to why we search through the whole tree
instead of just the local switch returned by dsa_slave_dev_lower_find.
Or a different angle of the same confusion: why does
dsa_slave_dev_lower_find(br_dev) return a single dp that's under br_dev
instead of the whole list of bridged DSA ports?

To answer the second question, it should be enough to install the static
FDB entry on the CPU port of a single switch in the tree, because
dsa_port_fdb_add uses DSA_NOTIFIER_FDB_ADD which ensures that all other
switches in the tree get notified of that address, and add the entry
themselves using dsa_towards_port().

This should help understand the answer to the first question: the port
returned by dsa_slave_dev_lower_find may not be on the same switch as
the ports that offload the LAG. Nonetheless, if the driver implements
.crosschip_lag_join and .crosschip_bridge_join as mv88e6xxx does, there
still isn't any reason for trapping addresses learnt on the remote LAG
towards the CPU, and we should prevent that.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: mscc: ocelot: rebalance LAGs on link up/down events
Vladimir Oltean [Fri, 5 Feb 2021 22:02:19 +0000 (00:02 +0200)]
net: mscc: ocelot: rebalance LAGs on link up/down events

At present there is an issue when ocelot is offloading a bonding
interface, but one of the links of the physical ports goes down. Traffic
keeps being hashed towards that destination, and of course gets dropped
on egress.

Monitor the netdev notifier events emitted by the bonding driver for
changes in the physical state of lower interfaces, to determine which
ports are active and which ones are no longer.

Then extend ocelot_get_bond_mask to return either the configured bonding
interfaces, or the active ones, depending on a boolean argument. The
code that does rebalancing only needs to do so among the active ports,
whereas the bridge forwarding mask and the logical port IDs still need
to look at the permanently bonded ports.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: mscc: ocelot: rename aggr_count to num_ports_in_lag
Vladimir Oltean [Fri, 5 Feb 2021 22:02:18 +0000 (00:02 +0200)]
net: mscc: ocelot: rename aggr_count to num_ports_in_lag

It makes it a bit easier to read and understand the code that deals with
balancing the 16 aggregation codes among the ports in a certain LAG.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: mscc: ocelot: drop the use of the "lags" array
Vladimir Oltean [Fri, 5 Feb 2021 22:02:17 +0000 (00:02 +0200)]
net: mscc: ocelot: drop the use of the "lags" array

We can now simplify the implementation by always using ocelot_get_bond_mask
to look up the other ports that are offloading the same bonding interface
as us.

In ocelot_set_aggr_pgids, the code had a way to uniquely iterate through
LAGs. We need to achieve the same behavior by marking each LAG as visited,
which we do now by using a temporary 32-bit "visited" bitmask. This is
ok and we do not need dynamic memory allocation, because we know that
this switch architecture will not have more than 32 ports (the PGID port
masks are 32-bit anyway).

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: mscc: ocelot: set up logical port IDs centrally
Vladimir Oltean [Fri, 5 Feb 2021 22:02:16 +0000 (00:02 +0200)]
net: mscc: ocelot: set up logical port IDs centrally

The setup of logical port IDs is done in two places: from the inconclusively
named ocelot_setup_lag and from ocelot_port_lag_leave, a function that
also calls ocelot_setup_lag (which apparently does an incomplete setup
of the LAG).

To improve this situation, we can rename ocelot_setup_lag into
ocelot_setup_logical_port_ids, and drop the "lag" argument. It will now
set up the logical port IDs of all switch ports, which may be just
slightly more inefficient but more maintainable.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: mscc: ocelot: avoid unneeded "lp" variable in LAG join
Vladimir Oltean [Fri, 5 Feb 2021 22:02:15 +0000 (00:02 +0200)]
net: mscc: ocelot: avoid unneeded "lp" variable in LAG join

The index of the LAG is equal to the logical port ID that all the
physical port members have, which is further equal to the index of the
first physical port that is a member of the LAG.

The code gets a bit carried away with logic like this:

if (a == b)
c = a;
else
c = b;

which can be simplified, of course, into:

c = b;

(with a being port, b being lp, c being lag)

This further makes the "lp" variable redundant, since we can use "lag"
everywhere where "lp" (logical port) was used. So instead of a "c = b"
assignment, we can do a complete deletion of b. Only one comment here:

if (bond_mask) {
lp = __ffs(bond_mask);
ocelot->lags[lp] = 0;
}

lp was clobbered before, because it was used as a temporary variable to
hold the new smallest port ID from the bond. Now that we don't have "lp"
any longer, we'll just avoid the temporary variable and zeroize the
bonding mask directly.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: mscc: ocelot: set up the bonding mask in a way that avoids a net_device
Vladimir Oltean [Fri, 5 Feb 2021 22:02:14 +0000 (00:02 +0200)]
net: mscc: ocelot: set up the bonding mask in a way that avoids a net_device

Since this code should be called from pure switchdev as well as from
DSA, we must find a way to determine the bonding mask not by looking
directly at the net_device lowers of the bonding interface, since those
could have different private structures.

We keep a pointer to the bonding upper interface, if present, in struct
ocelot_port. Then the bonding mask becomes the bitwise OR of all ports
that have the same bonding upper interface. This adds a duplication of
functionality with the current "lags" array, but the duplication will be
short-lived, since further patches will remove the latter completely.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: mscc: ocelot: use ipv6 in the aggregation code
Vladimir Oltean [Fri, 5 Feb 2021 22:02:13 +0000 (00:02 +0200)]
net: mscc: ocelot: use ipv6 in the aggregation code

IPv6 header information is not currently part of the entropy source for
the 4-bit aggregation code used for LAG offload, even though it could be.
The hardware reference manual says about these fields:

ANA::AGGR_CFG.AC_IP6_TCPUDP_PORT_ENA
Use IPv6 TCP/UDP port when calculating aggregation code. Configure
identically for all ports. Recommended value is 1.

ANA::AGGR_CFG.AC_IP6_FLOW_LBL_ENA
Use IPv6 flow label when calculating AC. Configure identically for all
ports. Recommended value is 1.

Integration with the xmit_hash_policy of the bonding interface is TBD.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: mscc: ocelot: don't refuse bonding interfaces we can't offload
Vladimir Oltean [Fri, 5 Feb 2021 22:02:12 +0000 (00:02 +0200)]
net: mscc: ocelot: don't refuse bonding interfaces we can't offload

Since switchdev/DSA exposes network interfaces that fulfill many of the
same user space expectations that dedicated NICs do, it makes sense to
not deny bonding interfaces with a bonding policy that we cannot offload,
but instead allow the bonding driver to select the egress interface in
software.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: mscc: ocelot: use a switch-case statement in ocelot_netdevice_event
Vladimir Oltean [Fri, 5 Feb 2021 22:02:11 +0000 (00:02 +0200)]
net: mscc: ocelot: use a switch-case statement in ocelot_netdevice_event

Make ocelot's net device event handler more streamlined by structuring
it in a similar way with others. The inspiration here was
dsa_slave_netdevice_event.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: mscc: ocelot: rename ocelot_netdevice_port_event to ocelot_netdevice_changeupper
Vladimir Oltean [Fri, 5 Feb 2021 22:02:10 +0000 (00:02 +0200)]
net: mscc: ocelot: rename ocelot_netdevice_port_event to ocelot_netdevice_changeupper

ocelot_netdevice_port_event treats a single event, NETDEV_CHANGEUPPER.
So we can remove the check for the type of event, and rename the
function to be more suggestive, since there already is a function with a
very similar name of ocelot_netdevice_event.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge branch 'automatically-manage-dsa-master-interface-state'
Jakub Kicinski [Sat, 6 Feb 2021 22:42:59 +0000 (14:42 -0800)]
Merge branch 'automatically-manage-dsa-master-interface-state'

Vladimir Oltean says:

====================
Automatically manage DSA master interface state

This patch series adds code that makes DSA open the master interface
automatically whenever one user interface gets opened, either by the
user, or by various networking subsystems: netconsole, nfsroot.
With that in place, we can remove some of the places in the network
stack where DSA-specific code was sprinkled.
====================

Link: https://lore.kernel.org/r/20210205133713.4172846-1-vladimir.oltean@nxp.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoRevert "net: ipv4: handle DSA enabled master network devices"
Vladimir Oltean [Fri, 5 Feb 2021 13:37:13 +0000 (15:37 +0200)]
Revert "net: ipv4: handle DSA enabled master network devices"

This reverts commit 728c02089a0e3eefb02e9927bfae50490f40e72e.

Since 2015 DSA has gained more integration with the network stack, we
can now have the same functionality without explicitly open-coding for
it:
- It now opens the DSA master netdevice automatically whenever a user
  netdevice is opened.
- The master and switch interfaces are coupled in an upper/lower
  hierarchy using the netdev adjacency lists.

In the nfsroot example below, the interface chosen by autoconfig was
swp3, and every interface except that and the DSA master, eth1, was
brought down afterwards:

[    8.714215] mscc_felix 0000:00:00.5 swp0 (uninitialized): PHY [0000:00:00.3:10] driver [Microsemi GE VSC8514 SyncE] (irq=POLL)
[    8.978041] mscc_felix 0000:00:00.5 swp1 (uninitialized): PHY [0000:00:00.3:11] driver [Microsemi GE VSC8514 SyncE] (irq=POLL)
[    9.246134] mscc_felix 0000:00:00.5 swp2 (uninitialized): PHY [0000:00:00.3:12] driver [Microsemi GE VSC8514 SyncE] (irq=POLL)
[    9.486203] mscc_felix 0000:00:00.5 swp3 (uninitialized): PHY [0000:00:00.3:13] driver [Microsemi GE VSC8514 SyncE] (irq=POLL)
[    9.512827] mscc_felix 0000:00:00.5: configuring for fixed/internal link mode
[    9.521047] mscc_felix 0000:00:00.5: Link is Up - 2.5Gbps/Full - flow control off
[    9.530382] device eth1 entered promiscuous mode
[    9.535452] DSA: tree 0 setup
[    9.539777] printk: console [netcon0] enabled
[    9.544504] netconsole: network logging started
[    9.555047] fsl_enetc 0000:00:00.2 eth1: configuring for fixed/internal link mode
[    9.562790] fsl_enetc 0000:00:00.2 eth1: Link is Up - 1Gbps/Full - flow control off
[    9.564661] 8021q: adding VLAN 0 to HW filter on device bond0
[    9.637681] fsl_enetc 0000:00:00.0 eth0: PHY [0000:00:00.0:02] driver [Qualcomm Atheros AR8031/AR8033] (irq=POLL)
[    9.655679] fsl_enetc 0000:00:00.0 eth0: configuring for inband/sgmii link mode
[    9.666611] mscc_felix 0000:00:00.5 swp0: configuring for inband/qsgmii link mode
[    9.676216] 8021q: adding VLAN 0 to HW filter on device swp0
[    9.682086] mscc_felix 0000:00:00.5 swp1: configuring for inband/qsgmii link mode
[    9.690700] 8021q: adding VLAN 0 to HW filter on device swp1
[    9.696538] mscc_felix 0000:00:00.5 swp2: configuring for inband/qsgmii link mode
[    9.705131] 8021q: adding VLAN 0 to HW filter on device swp2
[    9.710964] mscc_felix 0000:00:00.5 swp3: configuring for inband/qsgmii link mode
[    9.719548] 8021q: adding VLAN 0 to HW filter on device swp3
[    9.747811] Sending DHCP requests ..
[   12.742899] mscc_felix 0000:00:00.5 swp1: Link is Up - 1Gbps/Full - flow control rx/tx
[   12.743828] mscc_felix 0000:00:00.5 swp0: Link is Up - 1Gbps/Full - flow control off
[   12.747062] IPv6: ADDRCONF(NETDEV_CHANGE): swp1: link becomes ready
[   12.755216] fsl_enetc 0000:00:00.0 eth0: Link is Up - 1Gbps/Full - flow control rx/tx
[   12.766603] IPv6: ADDRCONF(NETDEV_CHANGE): swp0: link becomes ready
[   12.783188] mscc_felix 0000:00:00.5 swp2: Link is Up - 1Gbps/Full - flow control rx/tx
[   12.785354] IPv6: ADDRCONF(NETDEV_CHANGE): eth0: link becomes ready
[   12.799535] IPv6: ADDRCONF(NETDEV_CHANGE): swp2: link becomes ready
[   13.803141] mscc_felix 0000:00:00.5 swp3: Link is Up - 1Gbps/Full - flow control rx/tx
[   13.811646] IPv6: ADDRCONF(NETDEV_CHANGE): swp3: link becomes ready
[   15.452018] ., OK
[   15.470336] IP-Config: Got DHCP answer from 10.0.0.1, my address is 10.0.0.39
[   15.477887] IP-Config: Complete:
[   15.481330]      device=swp3, hwaddr=00:04:9f:05:de:0a, ipaddr=10.0.0.39, mask=255.255.255.0, gw=10.0.0.1
[   15.491846]      host=10.0.0.39, domain=(none), nis-domain=(none)
[   15.498429]      bootserver=10.0.0.1, rootserver=10.0.0.1, rootpath=
[   15.498481]      nameserver0=8.8.8.8
[   15.627542] fsl_enetc 0000:00:00.0 eth0: Link is Down
[   15.690903] mscc_felix 0000:00:00.5 swp0: Link is Down
[   15.745216] mscc_felix 0000:00:00.5 swp1: Link is Down
[   15.800498] mscc_felix 0000:00:00.5 swp2: Link is Down

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoRevert "net: Have netpoll bring-up DSA management interface"
Vladimir Oltean [Fri, 5 Feb 2021 13:37:12 +0000 (15:37 +0200)]
Revert "net: Have netpoll bring-up DSA management interface"

This reverts commit 1532b9778478577152201adbafa7738b1e844868.

The above commit is good and it works, however it was meant as a bugfix
for stable kernels and now we have more self-contained ways in DSA to
handle the situation where the DSA master must be brought up.

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: dsa: automatically bring user ports down when master goes down
Vladimir Oltean [Fri, 5 Feb 2021 13:37:11 +0000 (15:37 +0200)]
net: dsa: automatically bring user ports down when master goes down

This is not fixing any actual bug that I know of, but having a DSA
interface that is up even when its lower (master) interface is down is
one of those things that just do not sound right.

Yes, DSA checks if the master is up before actually bringing the
user interface up, but nobody prevents bringing the master interface
down immediately afterwards... Then the user ports would attempt
dev_queue_xmit on an interface that is down, and wonder what's wrong.

This patch prevents that from happening. NETDEV_GOING_DOWN is the
notification emitted _before_ the master actually goes down, and we are
protected by the rtnl_mutex, so all is well.

For those of you reading this because you were doing switch testing
such as latency measurements for autonomously forwarded traffic, and you
needed a controlled environment with no extra packets sent by the
network stack, this patch breaks that, because now the user ports go
down too, which may shut down the PHY etc. But please don't do it like
that, just do instead:

tc qdisc add dev eno2 clsact
tc filter add dev eno2 egress flower action drop

Tested with two cascaded DSA switches:
$ ip link set eno2 down
sja1105 spi2.0 sw0p2: Link is Down
mscc_felix 0000:00:00.5 swp0: Link is Down
fsl_enetc 0000:00:00.2 eno2: Link is Down

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: dsa: automatically bring up DSA master when opening user port
Vladimir Oltean [Fri, 5 Feb 2021 13:37:10 +0000 (15:37 +0200)]
net: dsa: automatically bring up DSA master when opening user port

DSA wants the master interface to be open before the user port is due to
historical reasons. The promiscuity of interfaces that are down used to
have issues, as referenced Lennert Buytenhek in commit df02c6ff2e39
("dsa: fix master interface allmulti/promisc handling").

The bugfix mentioned there, commit b6c40d68ff64 ("net: only invoke
dev->change_rx_flags when device is UP"), was basically a "don't do
that" approach to working around the promiscuity while down issue.

Further work done by Vlad Yasevich in commit d2615bf45069 ("net: core:
Always propagate flag changes to interfaces") has resolved the
underlying issue, and it is strictly up to the DSA and 8021q drivers
now, it is no longer mandated by the networking core that the master
interface must be up when changing its promiscuity.

From DSA's point of view, deciding to error out in dsa_slave_open
because the master isn't up is
(a) a bad user experience and
(b) knocking at an open door.
Even if there still was an issue with promiscuity while down, DSA could
still just open the master and avoid it.

Doing it this way has the additional benefit that user space can now
remove DSA-specific workarounds, like systemd-networkd with BindCarrier:
https://github.com/systemd/systemd/issues/7478

And we can finally remove one of the 2 bullets in the "Common pitfalls
using DSA setups" chapter.

Tested with two cascaded DSA switches:

$ ip link set sw0p2 up
fsl_enetc 0000:00:00.2 eno2: configuring for fixed/internal link mode
fsl_enetc 0000:00:00.2 eno2: Link is Up - 1Gbps/Full - flow control rx/tx
mscc_felix 0000:00:00.5 swp0: configuring for fixed/sgmii link mode
mscc_felix 0000:00:00.5 swp0: Link is Up - 1Gbps/Full - flow control off
8021q: adding VLAN 0 to HW filter on device swp0
sja1105 spi2.0 sw0p2: configuring for phy/rgmii-id link mode
IPv6: ADDRCONF(NETDEV_CHANGE): eno2: link becomes ready
IPv6: ADDRCONF(NETDEV_CHANGE): swp0: link becomes ready

Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge branch 'net-hns3-updates-for-next'
Jakub Kicinski [Sat, 6 Feb 2021 22:36:07 +0000 (14:36 -0800)]
Merge branch 'net-hns3-updates-for-next'

Huazhong Tan says:

====================
net: hns3: updates for -next

This series adds some code optimizations and compatibility
handlings for the HNS3 ethernet driver.

change log:
V2: refactor #2 as Jukub Kicinski reported and remove the part
    about RSS size which will not be different in different hw.
    updates netdev->max_mtu as well in #4 reported by Jakub Kicinski.

previous version:
V1: https://patchwork.kernel.org/project/netdevbpf/cover/1612269593-18691-1-git-send-email-tanhuazhong@huawei.com/
====================

Link: https://lore.kernel.org/r/1612513969-9278-1-git-send-email-tanhuazhong@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: hns3: replace macro of max qset number with specification
Guangbin Huang [Fri, 5 Feb 2021 08:32:49 +0000 (16:32 +0800)]
net: hns3: replace macro of max qset number with specification

The max qset number is a fixed value now and it is defined by a macro.
In order to support other value in different kinds of device, it is
better to use specification queried from firmware to replace macro.

Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: hns3: debugfs add max tm rate specification print
Guangbin Huang [Fri, 5 Feb 2021 08:32:48 +0000 (16:32 +0800)]
net: hns3: debugfs add max tm rate specification print

In order to add a method to check the specification of max tm rate
for debugging, function hns3_dbg_dev_specs() adds this value print.

Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: hns3: add support for obtaining the maximum frame size
Yufeng Mo [Fri, 5 Feb 2021 08:32:47 +0000 (16:32 +0800)]
net: hns3: add support for obtaining the maximum frame size

Since the newer hardware may supports different frame size,
so add support to obtain the capability from the firmware
instead of the fixed value.

Signed-off-by: Yufeng Mo <moyufeng@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: hns3: optimize the code when update the tc info
GuoJia Liao [Fri, 5 Feb 2021 08:32:46 +0000 (16:32 +0800)]
net: hns3: optimize the code when update the tc info

When update the TC info for NIC, there are some differences
between PF and VF. Currently, four "vport->vport_id" are
used to distinguish PF or VF. So merge them into one to
improve readability and maintainability of code.

Signed-off-by: GuoJia Liao <liaoguojia@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: hns3: RSS indirection table use device specification
Guangbin Huang [Fri, 5 Feb 2021 08:32:45 +0000 (16:32 +0800)]
net: hns3: RSS indirection table use device specification

As RSS indirection table size may be different in different
hardware. Instead of using macro, this value is better to use
device specification which querying from firmware.

BTW, RSS indirection table should be allocated by the queried
size instead the static array.

.get_rss_indir_size in struct hnae3_ae_ops is not used now,
so remove it as well.

Signed-off-by: Guangbin Huang <huangguangbin2@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: hns3: add api capability bits for firmware
Jian Shen [Fri, 5 Feb 2021 08:32:44 +0000 (16:32 +0800)]
net: hns3: add api capability bits for firmware

To improve the compatibility of firmware for driver, help firmware
to deal with different api commands, add api capability bits when
initialize the command queue.

Signed-off-by: Jian Shen <shenjian15@huawei.com>
Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge branch 'mptcp-misc-updates-for-tests-lock-annotation'
Jakub Kicinski [Sat, 6 Feb 2021 22:35:49 +0000 (14:35 -0800)]
Merge branch 'mptcp-misc-updates-for-tests-lock-annotation'

Mat Martineau says:

====================
mptcp: Misc. updates for tests & lock annotation

Here are two fixes we've collected in the mptcp tree.

Patch 1 refactors a MPTCP selftest script to allow running a subset of
the tests.

Patch 2 adds some locking & might_sleep assertations.
====================

Link: https://lore.kernel.org/r/20210204232330.202441-1-mathew.j.martineau@linux.intel.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agomptcp: pm: add lockdep assertions
Florian Westphal [Thu, 4 Feb 2021 23:23:30 +0000 (15:23 -0800)]
mptcp: pm: add lockdep assertions

Add a few assertions to make sure functions are called with the needed
locks held.
Two functions gain might_sleep annotations because they contain
conditional calls to functions that sleep.

Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoselftests: mptcp: add command line arguments for mptcp_join.sh
Geliang Tang [Thu, 4 Feb 2021 23:23:29 +0000 (15:23 -0800)]
selftests: mptcp: add command line arguments for mptcp_join.sh

Since the mptcp_join script is becoming too big, this patch splits it
into several smaller chunks, each of them has been defined in a function
as a individual test group for several related testcases.

Using bash getopts function to parse command line arguments, and invoke
each function to do the individual test group.

Here are all the arguments:
  -f subflows_tests
  -s signal_address_tests
  -l link_failure_tests
  -t add_addr_timeout_tests
  -r remove_tests
  -a add_tests
  -6 ipv6_tests
  -4 v4mapped_tests
  -b backup_tests
  -p add_addr_ports_tests
  -c syncookies_tests
  -h help

Run mptcp_join.sh with no argument will execute all testcases.

Signed-off-by: Geliang Tang <geliangtang@gmail.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge branch 'dpaa2-add-1000base-x-support'
Jakub Kicinski [Sat, 6 Feb 2021 22:35:23 +0000 (14:35 -0800)]
Merge branch 'dpaa2-add-1000base-x-support'

Russell King says:

====================
dpaa2: add 1000base-X support

This patch series adds 1000base-X support to pcs-lynx and DPAA2,
allowing runtime switching between SGMII and 1000base-X. This is
a pre-requisit for SFP module support on the SolidRun ComExpress 7.

v2: updated with Ioana's r-b's, and comment on backplane support
====================

Link: https://lore.kernel.org/r/20210205103859.GH1463@shell.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: dpaa2-mac: add backplane link mode support
Russell King [Fri, 5 Feb 2021 10:40:09 +0000 (10:40 +0000)]
net: dpaa2-mac: add backplane link mode support

Add support for backplane link mode, which is, according to discussions
with NXP earlier in the year, is a mode where the OS (Linux) is able to
manage the PCS and Serdes itself.

This commit prepares the ground work for allowing 1G fiber connections
to be used with DPAA2 on the SolidRun CEX7 platforms.

Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: dpaa2-mac: add 1000BASE-X support
Russell King [Fri, 5 Feb 2021 10:40:04 +0000 (10:40 +0000)]
net: dpaa2-mac: add 1000BASE-X support

Now that pcs-lynx supports 1000BASE-X, add support for this interface
mode to dpaa2-mac. pcs-lynx can be switched at runtime between SGMII
and 1000BASE-X mode, so allow dpaa2-mac to switch between these as
well.

This commit prepares the ground work for allowing 1G fiber connections
to be used with DPAA2 on the SolidRun CEX7 platforms.

Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: pcs: add pcs-lynx 1000BASE-X support
Russell King [Fri, 5 Feb 2021 10:39:59 +0000 (10:39 +0000)]
net: pcs: add pcs-lynx 1000BASE-X support

Add support for 1000BASE-X to pcs-lynx for the LX2160A.

This commit prepares the ground work for allowing 1G fiber connections
to be used with DPAA2 on the SolidRun CEX7 platforms.

Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Russell King <rmk+kernel@armlinux.org.uk>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: wan: farsync: use new tasklet API
Emil Renner Berthing [Thu, 4 Feb 2021 17:39:47 +0000 (18:39 +0100)]
net: wan: farsync: use new tasklet API

This converts the driver to use the new tasklet API introduced in
commit 12cc923f1ccc ("tasklet: Introduce new initialization API")

The new API changes the argument passed to callback functions,
but fortunately it is unused so it is straight forward to use
DECLARE_TASKLET rather than DECLARE_TASLKLET_OLD.

Signed-off-by: Emil Renner Berthing <kernel@esmil.dk>
Link: https://lore.kernel.org/r/20210204173947.92884-1-kernel@esmil.dk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge branch 'net-avoid-the-memory-waste-in-some-ethernet-drivers'
Jakub Kicinski [Sat, 6 Feb 2021 19:57:30 +0000 (11:57 -0800)]
Merge branch 'net-avoid-the-memory-waste-in-some-ethernet-drivers'

Kevin Hao says:

====================
net: Avoid the memory waste in some Ethernet drivers

In the current implementation of napi_alloc_frag(), it doesn't have any
align guarantee for the returned buffer address. We would have to use
some ugly workarounds to make sure that we can get a align buffer
address for some Ethernet drivers. This patch series tries to introduce
some helper functions to make sure that an align buffer is returned.
Then we can drop the ugly workarounds and avoid the unnecessary memory
waste.
====================

Link: https://lore.kernel.org/r/20210204105638.1584-1-haokexin@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: dpaa2: Use napi_alloc_frag_align() to avoid the memory waste
Kevin Hao [Thu, 4 Feb 2021 10:56:38 +0000 (18:56 +0800)]
net: dpaa2: Use napi_alloc_frag_align() to avoid the memory waste

The napi_alloc_frag_align() will guarantee that a correctly align
buffer address is returned. So use this function to simplify the buffer
alloc and avoid the unnecessary memory waste.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Reviewed-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: octeontx2: Use napi_alloc_frag_align() to avoid the memory waste
Kevin Hao [Thu, 4 Feb 2021 10:56:37 +0000 (18:56 +0800)]
net: octeontx2: Use napi_alloc_frag_align() to avoid the memory waste

The napi_alloc_frag_align() will guarantee that a correctly align
buffer address is returned. So use this function to simplify the buffer
alloc and avoid the unnecessary memory waste.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Tested-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: Introduce {netdev,napi}_alloc_frag_align()
Kevin Hao [Thu, 4 Feb 2021 10:56:36 +0000 (18:56 +0800)]
net: Introduce {netdev,napi}_alloc_frag_align()

In the current implementation of {netdev,napi}_alloc_frag(), it doesn't
have any align guarantee for the returned buffer address, But for some
hardwares they do require the DMA buffer to be aligned correctly,
so we would have to use some workarounds like below if the buffers
allocated by the {netdev,napi}_alloc_frag() are used by these hardwares
for DMA.
    buf = napi_alloc_frag(really_needed_size + align);
    buf = PTR_ALIGN(buf, align);

These codes seems ugly and would waste a lot of memories if the buffers
are used in a network driver for the TX/RX. We have added the align
support for the page_frag functions, so add the corresponding
{netdev,napi}_frag functions.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agomm: page_frag: Introduce page_frag_alloc_align()
Kevin Hao [Thu, 4 Feb 2021 10:56:35 +0000 (18:56 +0800)]
mm: page_frag: Introduce page_frag_alloc_align()

In the current implementation of page_frag_alloc(), it doesn't have
any align guarantee for the returned buffer address. But for some
hardwares they do require the DMA buffer to be aligned correctly,
so we would have to use some workarounds like below if the buffers
allocated by the page_frag_alloc() are used by these hardwares for
DMA.
    buf = page_frag_alloc(really_needed_size + align);
    buf = PTR_ALIGN(buf, align);

These codes seems ugly and would waste a lot of memories if the buffers
are used in a network driver for the TX/RX. So introduce
page_frag_alloc_align() to make sure that an aligned buffer address is
returned.

Signed-off-by: Kevin Hao <haokexin@gmail.com>
Acked-by: Vlastimil Babka <vbabka@suse.cz>
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: dwc-xlgmac: Fix spelling mistake in function name
Colin Ian King [Thu, 4 Feb 2021 09:49:44 +0000 (09:49 +0000)]
net: dwc-xlgmac: Fix spelling mistake in function name

There is a spelling mistake in the function name alloc_channles_and_rings.
Fix this by renaming it to alloc_channels_and_rings.

Signed-off-by: Colin Ian King <colin.king@canonical.com>
Link: https://lore.kernel.org/r/20210204094944.51460-1-colin.king@canonical.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: mhi-net: Add re-aggregation of fragmented packets
Loic Poulain [Thu, 4 Feb 2021 08:40:00 +0000 (09:40 +0100)]
net: mhi-net: Add re-aggregation of fragmented packets

When device side MTU is larger than host side MTU, the packets
(typically rmnet packets) are split over multiple MHI transfers.
In that case, fragments must be re-aggregated to recover the packet
before forwarding to upper layer.

A fragmented packet result in -EOVERFLOW MHI transaction status for
each of its fragments, except the final one. Such transfer was
previously considered as error and fragments were simply dropped.

This change adds re-aggregation mechanism using skb chaining, via
skb frag_list.

A warning (once) is printed since this behavior usually comes from
a misconfiguration of the device (e.g. modem MTU).

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Acked-by: Jesse Brandeburg <jesse.brandeburg@intel.com>
Link: https://lore.kernel.org/r/1612428002-12333-1-git-send-email-loic.poulain@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: qualcomm: rmnet: Fix rx_handler for non-linear skbs
Loic Poulain [Thu, 4 Feb 2021 08:40:01 +0000 (09:40 +0100)]
net: qualcomm: rmnet: Fix rx_handler for non-linear skbs

There is no guarantee that rmnet rx_handler is only fed with linear
skbs, but current rmnet implementation does not check that, leading
to crash in case of non linear skbs processed as linear ones.

Fix that by ensuring skb linearization before processing.

Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Acked-by: Willem de Bruijn <willemb@google.com>
Reviewed-by: Subash Abhinov Kasiviswanathan <subashab@codeaurora.org>
Link: https://lore.kernel.org/r/1612428002-12333-2-git-send-email-loic.poulain@linaro.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: sched: Return the correct errno code
Zheng Yongjun [Thu, 4 Feb 2021 07:39:50 +0000 (15:39 +0800)]
net: sched: Return the correct errno code

When kalloc or kmemdup failed, should return ENOMEM rather than ENOBUF.

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Link: https://lore.kernel.org/r/20210204073950.18372-1-zhengyongjun3@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agodccp: Return the correct errno code
Zheng Yongjun [Thu, 4 Feb 2021 07:28:20 +0000 (15:28 +0800)]
dccp: Return the correct errno code

When kalloc or kmemdup failed, should return ENOMEM rather than ENOBUF.

Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Link: https://lore.kernel.org/r/20210204072820.17723-1-zhengyongjun3@huawei.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: bridge: mcast: Use ERR_CAST instead of ERR_PTR(PTR_ERR())
Xu Wang [Thu, 4 Feb 2021 07:05:49 +0000 (07:05 +0000)]
net: bridge: mcast: Use ERR_CAST instead of ERR_PTR(PTR_ERR())

Use ERR_CAST inlined function instead of ERR_PTR(PTR_ERR(...)).

net/bridge/br_multicast.c:1246:9-16: WARNING: ERR_CAST can be used with mp
Generated by: scripts/coccinelle/api/err_cast.cocci

Signed-off-by: Xu Wang <vulab@iscas.ac.cn>
Link: https://lore.kernel.org/r/20210204070549.83636-1-vulab@iscas.ac.cn
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonet: ethernet: ti: fix netdevice stats for XDP
Lorenzo Bianconi [Wed, 3 Feb 2021 18:06:17 +0000 (19:06 +0100)]
net: ethernet: ti: fix netdevice stats for XDP

Align netdevice statistics when the device is running in XDP mode
to other upstream drivers. In particular report to user-space rx
packets even if they are not forwarded to the networking stack
(XDP_PASS) but if they are redirected (XDP_REDIRECT), dropped (XDP_DROP)
or sent back using the same interface (XDP_TX). This patch allows the
system administrator to verify the device is receiving data correctly.

Signed-off-by: Lorenzo Bianconi <lorenzo@kernel.org>
Link: https://lore.kernel.org/r/a457cb17dd9c58c116d64ee34c354b2e89c0ff8f.1612375372.git.lorenzo@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agodpaa2-eth: Simplify the calculation of variables
Jiapeng Chong [Tue, 2 Feb 2021 10:02:37 +0000 (18:02 +0800)]
dpaa2-eth: Simplify the calculation of variables

Fix the following coccicheck warnings:

./drivers/net/ethernet/freescale/dpaa2/dpaa2-eth.c:1651:36-38: WARNING
!A || A && B is equivalent to !A || B.

Reported-by: Abaci Robot <abaci@linux.alibaba.com>
Signed-off-by: Jiapeng Chong <jiapeng.chong@linux.alibaba.com>
Acked-by: Ioana Ciornei <ioana.ciornei@nxp.com>
Link: https://lore.kernel.org/r/1612260157-128026-1-git-send-email-jiapeng.chong@linux.alibaba.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agoMerge tag 'wireless-drivers-next-2021-02-05' of git://git.kernel.org/pub/scm/linux...
Jakub Kicinski [Sat, 6 Feb 2021 17:36:03 +0000 (09:36 -0800)]
Merge tag 'wireless-drivers-next-2021-02-05' of git://git./linux/kernel/git/kvalo/wireless-drivers-next

Kalle Valo says:

====================
wireless-drivers-next patches for v5.12

First set of patches for v5.12. A smaller pull request this time,
biggest feature being a better key handling for ath9k. And of course
the usual fixes and cleanups all over.

Major changes:

ath9k
 * more robust encryption key cache management

brcmfmac
 * support BCM4365E with 43666 ChipCommon chip ID

* tag 'wireless-drivers-next-2021-02-05' of git://git.kernel.org/pub/scm/linux/kernel/git/kvalo/wireless-drivers-next: (35 commits)
  iwl4965: do not process non-QOS frames on txq->sched_retry path
  mt7601u: process tx URBs with status EPROTO properly
  wlcore: Fix command execute failure 19 for wl12xx
  mt7601u: use ieee80211_rx_list to pass frames to the network stack as a batch
  rtw88: 8723de: adjust the LTR setting
  rtlwifi: rtl8821ae: fix bool comparison in expressions
  rtlwifi: rtl8192se: fix bool comparison in expressions
  rtlwifi: rtl8188ee: fix bool comparison in expressions
  rtlwifi: rtl8192c-common: fix bool comparison in expressions
  rtlwifi: rtl_pci: fix bool comparison in expressions
  wlcore: Downgrade exceeded max RX BA sessions to debug
  wilc1000: use flexible-array member instead of zero-length array
  brcmfmac: clear EAP/association status bits on linkdown events
  brcmfmac: Delete useless kfree code
  qtnfmac_pcie: Use module_pci_driver
  mt7601u: check the status of device in calibration
  mt7601u: process URBs in status EPROTO properly
  brcmfmac: support BCM4365E with 43666 ChipCommon chip ID
  wilc1000: fix spelling mistake in Kconfig "devision" -> "division"
  mwifiex: pcie: Drop bogus __refdata annotation
  ...
====================

Link: https://lore.kernel.org/r/20210205161901.C7F83C433ED@smtp.codeaurora.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
3 years agonetfilter: nftables: remove redundant assignment of variable err
Colin Ian King [Thu, 28 Jan 2021 17:59:23 +0000 (17:59 +0000)]
netfilter: nftables: remove redundant assignment of variable err

The variable err is being assigned a value that is never read,
the same error number is being returned at the error return
path via label err1.  Clean up the code by removing the assignment.

Addresses-Coverity: ("Unused value")
Signed-off-by: Colin Ian King <colin.king@canonical.com>
Signed-off-by: Pablo Neira Ayuso <pablo@netfilter.org>
3 years agoice: remove dead code
Bruce Allan [Mon, 12 Oct 2020 22:53:26 +0000 (15:53 -0700)]
ice: remove dead code

The check for a NULL pf pointer is moot since the earlier declaration and
assignment of struct device *dev already de-referenced the pointer.  Also,
the only caller of ice_set_dflt_mib() already ensures pf is not NULL.

Cc: Dave Ertman <david.m.ertman@intel.com>
Reported-by: kernel test robot <lkp@intel.com>
Reported-by: Dan Carpenter <dan.carpenter@oracle.com>
Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: use flex_array_size where possible
Bruce Allan [Sat, 21 Nov 2020 00:39:36 +0000 (16:39 -0800)]
ice: use flex_array_size where possible

Use the flex_array_size() helper with the recently added flexible array
members in structures.

Signed-off-by: Bruce Allan <bruce.w.allan@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: Replace one-element array with flexible-array member
Gustavo A. R. Silva [Tue, 29 Sep 2020 19:01:56 +0000 (14:01 -0500)]
ice: Replace one-element array with flexible-array member

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].

Refactor the code according to the use of a flexible-array member in
struct ice_res_tracker, instead of a one-element array and use the
struct_size() helper to calculate the size for the allocations.

Also, notice that the code below suggests that, currently, two too many
bytes are being allocated with devm_kzalloc(), as the total number of
entries (pf->irq_tracker->num_entries) for pf->irq_tracker->list[] is
_vectors_ and sizeof(*pf->irq_tracker) also includes the size of the
one-element array _list_ in struct ice_res_tracker.

drivers/net/ethernet/intel/ice/ice_main.c:3511:
3511         /* populate SW interrupts pool with number of OS granted IRQs. */
3512         pf->num_avail_sw_msix = (u16)vectors;
3513         pf->irq_tracker->num_entries = (u16)vectors;
3514         pf->irq_tracker->end = pf->irq_tracker->num_entries;

With this change, the right amount of dynamic memory is now allocated
because, contrary to one-element arrays which occupy at least as much
space as a single object of the type, flexible-array members don't
occupy such space in the containing structure.

[1] https://en.wikipedia.org/wiki/Flexible_array_member
[2] https://www.kernel.org/doc/html/v5.9-rc1/process/deprecated.html#zero-length-and-one-element-arrays

Built-tested-by: kernel test robot <lkp@intel.com>
Signed-off-by: Gustavo A. R. Silva <gustavoars@kernel.org>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: display stored UNDI firmware version via devlink info
Jacob Keller [Thu, 12 Nov 2020 00:43:30 +0000 (16:43 -0800)]
ice: display stored UNDI firmware version via devlink info

Just as we recently added support for other stored firmware flash
versions, support display of the stored UNDI Option ROM version via
devlink info.

To do this, we need to introduce a new ice_get_inactive_orom_ver
function. This is a little trickier than with other flash versions. The
Option ROM version data was being read from a special "Boot
Configuration" block of the NVM Preserved Field Area. This block only
contains the *active* Option ROM version data. It is populated when the
device firmware finishes updating the Option ROM.

This method is ineffective at reading the stored Option ROM version
data. Instead of reading from this section of the flash, replace this
version extraction with one which locates the Combo Version information
from within the Option ROM binary.

This data is stored within the Option ROM at a 512 byte offset, in
a simple structured format. The structure uses a simple modulo 256
checksum for integrity verification. Scan through the Option ROM to
locate the CIVD data section, and extract the Combo Version.

Refactor ice_get_orom_ver_info so that it takes the bank select
enumeration parameter. Use this to implement ice_get_inactive_orom_ver.

Although all ice devices have a Boot Configuration block in the NVM PFA,
not all devices have a valid Option ROM. In this case, the old
ice_get_orom_ver_info would "succeed" but report a version of all
zeros. The new implementation would fail to locate the $CIV section in
the Option ROM and report an error. Thus, we must ensure that
ice_init_nvm does not fail if ice_get_orom_ver_info fails.

Use the new ice_get_inactive_orom_ver to allow reporting the Option ROM
versions for a pending update via devlink info.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: display stored netlist versions via devlink info
Jacob Keller [Thu, 12 Nov 2020 00:43:29 +0000 (16:43 -0800)]
ice: display stored netlist versions via devlink info

Add a function to read the inactive netlist bank for version
information. To support this, refactor how we read the netlist version
data. Instead of using the firmware AQ interface with a module ID, read
from the flash as a flat NVM, using ice_read_flash_module.

This change requires a slight adjustment to the offset values used, as
reading from the flat NVM includes the type field (which was stripped by
firmware previously). Cleanup the macro names and move them to
ice_type.h. For clarity in how we calculate the offsets and so that
programmers can easily map the offset value to the data sheet, use
a wrapper macro to account for the offset adjustments.

Use the newly added ice_get_inactive_netlist_ver function to extract the
version data from the pending netlist module update. Add the stored
variants of "fw.netlist", and "fw.netlist.build" to the info version map
array.

With this change, we now report the "fw.netlist" and "fw.netlist.build"
versions into the stored section of the devlink info report. As with the
main NVM module versions, if there is no pending update, we report the
currently active values as stored.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: display some stored NVM versions via devlink info
Jacob Keller [Thu, 12 Nov 2020 00:43:28 +0000 (16:43 -0800)]
ice: display some stored NVM versions via devlink info

The devlink info interface supports drivers reporting "stored" versions.
These versions indicate the version of an update that has been
downloaded to the device, but is not yet active.

The code for extracting the NVM version recently changed to enable
support for reading from either the active or the inactive bank. Use
this to implement ice_get_inactive_nvm_ver, which will read the NVM
version data from the inactive section of flash.

When reporting the versions via devlink info, first read the device
capabilities. Determine if there is a pending flash update, and if so,
extract relevant version information from the inactive flash. Store
these within the info context structure.

When reporting "stored" firmware versions, devlink documentation
indicates that we ought to always report a stored value, even if there
is no pending update. In this common case, the stored version should
match the running version. This means that each stored version should by
default fallback to the same value as reported by the running handler.

To support this, modify the version structure to have both a "getter"
and a "fallback". Modify the control loop so that it will use the
"fallback" function if the "getter" function does not report a version.

To report versions for which we can read the stored value, use a new
"stored()" macro. This macro will insert two entries into the version
list. The first entry is the traditional running version. The second is
the stored version, implemented with a fallback to the active version.
This is a little tricky, but reduces the overall duplication of elements
in the entry list, and ensures that running and stored values remain
consistent.

To avoid some duplication, add a combined() macro that will insert both
the running and stored versions into the version entry list.

Using this new support, add pending version reporter functions for
"fw.psid.api" and "fw.bundle_id". This enables reporting the stored
values for some of versions in the NVM module of the flash.

Reporting management versions is not implemented by this patch. The
active management version is reported to the driver via the AdminQ
mailbox during load. Although the version must be in the firmware binary
somewhere, accessing this from the inactive firmware is not trivial and
has not been implemented in this change.

Future changes will introduce support for reading the UNDI Option ROM
version and the version associated with the Netlist module.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: introduce function for reading from flash modules
Jacob Keller [Thu, 1 Oct 2020 17:31:43 +0000 (10:31 -0700)]
ice: introduce function for reading from flash modules

When reading from the flash memory of the device, the ice driver has two
interfaces available to it. First, it can use a mediated interface via
firmware that allows specifying a module ID. This allows reading from
specific modules of the active flash bank.

The second interface available is to perform flat reads. This allows
complete access to the entire flash. However, using it requires the
software to handle calculating module location and interpret pointer
addresses.

While most data required is accessible through the convenient first
interface, certain flash contents are not. This includes the CSS header
information associated with the Option ROM and NVM banks, as well as any
access to the "inactive" banks used as scratch space for performing
flash updates.

In order to access all of the relevant flash contents, software must use
the flat reads. Rather than forcing all flows to perform flat read
calculations, introduce a new abstraction for reading from the flash:
ice_read_flash_module. This function provides an abstraction for reading
from either the active or inactive flash bank at the requested module.
This interface is very similar to the abstraction provided via firmware,
but allows access to additional modules, as well as providing
a mechanism to request access to both flash banks.

At first glance, it might make sense for this abstraction to allow
specifying precisely which bank (1st or 2nd) the caller wishes to read.
This is simpler to implement but more difficult to use. In practice,
most callers only know whether they want the active bank, or the
inactive bank. Rather than force callers to determine for themselves
which bank to read from, implement ice_read_flash_module in terms of
"active" vs "inactive". This significantly simplifies the implementation
at the caller level and is a more useful abstraction over the flash
contents.

Make use of this new interface to refactor reading of the main NVM
version information. Instead of using the firmware's mediated ShadowRAM
function, use the ice_read_flash_module abstraction.

To do this, notice that most reads of the NVM are going to be in 2-byte
word chunks. To simplify using ice_read_flash_module for this case,
ice_read_nvm_module is introduced. This is a simple wrapper around
ice_read_flash_module which takes the correct pointer address for the
NVM bank, and forces the 2-byte word format onto the caller.

When reading the NVM versions, some fields are read from the Shadow RAM.
The Shadow RAM is the first 64KB of flash memory, and is populated
during device load. Most fields are copied from a section within the
active NVM bank. In order to read this data from both the active and
inactive NVM banks, we need to read not from the first 64KB of flash,
but instead from the correct offset into the NVM bank. Introduce
ice_read_nvm_sr_copy for this purpose. This function wraps around
ice_read_nvm_module and has the same interface as the ice_read_sr_word,
with the exception of allowing the caller to specify whether to read the
active or inactive flash bank.

With this change, it is now trivial to refactor ice_get_nvm_ver_info to
read using the software mediated ice_read_flash_module interface instead
of relying on the firmware mediated interface. This will be used in the
following change to implement support for stored versions in the devlink
info report.

Additionally, the overall ice_read_flash_module interface will be used
and extended to support all three major flash banks, and additionally to
support reading the flash image security revision information.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: cache NVM module bank information
Jacob Keller [Thu, 1 Oct 2020 17:31:42 +0000 (10:31 -0700)]
ice: cache NVM module bank information

The ice flash contains two copies of each of the NVM, Option ROM, and
Netlist modules. Each bank has a pointer word and a size word. In order
to correctly read from the active flash bank, the driver must calculate
the offset manually.

During NVM initialization, read the Shadow RAM control word and
determine which bank is active for each NVM module. Additionally, cache
the size and pointer values for use in calculating the correct offset.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: introduce context struct for info report
Jacob Keller [Thu, 12 Nov 2020 00:43:24 +0000 (16:43 -0800)]
ice: introduce context struct for info report

The ice driver uses an array of structures which link an info name with
a function that formats the associated version data into a string.

All existing format functions simply format already captured static data
from the driver hw structure. Future changes will introduce format
functions for reporting the versions of flash sections stored but not
yet applied. This type of version data is not stored as a member of the
hw structure. This is because (a) it might not yet exist in the case
there is no pending flash update, and (b) even if it does, it might
change such as if an update is canceled or replaced by a new update
before finalizing.

We could simply have each format function gather its own data upon being
called. However, in some cases the raw binary version data is
a combination of multiple different reported fields. Additionally, the
current interface doesn't have a way for the function to indicate that
the version doesn't exist.

Refactor this function interface to take a new ice_info_ctx structure
instead of the buffer pointer and length. This context structure allows
for future extensions to pre-gather version data that is stored within
the context struct instead of the hw struct.

Allocate this context structure initially at the start of
ice_devlink_info_get. We use dynamic allocation instead of a local stack
variable in order to avoid using too much kernel stack once we extend it
with additional data structures.

Modify the main loop that drives the info reporting so that the version
buffer string is always cleared between each format. Explicitly check
that the format function actually filled in a version string of non-zero
length. If the string is not provided, simply skip this version without
reporting an error. This allows for introducing format functions of
versions which may or may not be present, such as the version of
a pending update that has not yet been activated.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: create flash_info structure and separate NVM version
Jacob Keller [Thu, 1 Oct 2020 17:31:41 +0000 (10:31 -0700)]
ice: create flash_info structure and separate NVM version

The ice_nvm_info structure has become somewhat of a dumping ground for
all of the fields related to flash version. It holds the NVM version and
EETRACK id, the OptionROM info structure, the flash size, the ShadowRAM
size, and more.

A future change is going to add the ability to read the NVM version and
EETRACK ID from the inactive NVM bank. To make this simpler, it is
useful to have these NVM version info fields extracted to their own
structure.

Rename ice_nvm_info into ice_flash_info, and create a separate
ice_nvm_info structure that will contain the eetrack and NVM map
version. Move the netlist_ver structure into ice_flash_info and rename it
ice_netlist_info for consistency.

Modify the static ice_get_orom_ver_info to take the option rom structure
as a pointer. This makes it more obvious what portion of the hw struct
is being modified. Do the same for ice_get_netlist_ver_info.

Introduce a new ice_get_nvm_ver_info function, which will be similar to
ice_get_orom_ver_info and ice_get_netlist_ver_info, used to keep the NVM
version extraction code co-located.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoice: report timeout length for erasing during devlink flash
Jacob Keller [Wed, 11 Nov 2020 18:59:15 +0000 (10:59 -0800)]
ice: report timeout length for erasing during devlink flash

When erasing, notify userspace of how long we will potentially take to
erase a module. Doing so allows userspace to report the timeout, giving
a clear indication of the upper time bound of the operation.

Since we're re-using the erase timeout value, make it a macro rather
than a magic number.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Reviewed-by: Shannon Nelson <snelson@pensando.io>
Tested-by: Tony Brelinski <tonyx.brelinski@intel.com>
Signed-off-by: Tony Nguyen <anthony.l.nguyen@intel.com>
3 years agoiwlwifi: pcie: Disable softirqs during Rx queue init
Ilan Peer [Fri, 5 Feb 2021 09:06:40 +0000 (11:06 +0200)]
iwlwifi: pcie: Disable softirqs during Rx queue init

When Rx queues are configured during module init, NAPI is enabled
while the Rx queue lock is held. However, since softirqs are not
disabled, it is possible that and IRQ would fire and call
iwl_pcie_rx_handle() which would also try to acquire the Rx lock.

Prevent this by disabling softirqs during Rx queue configuration,
as part of module init flow.

Signed-off-by: Ilan Peer <ilan.peer@intel.com>
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210205110447.d206ac428823.Ia19339efb09f9d80143f0d0e398a158180754cfa@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
3 years agoiwlwifi: bump FW API to 61 for AX devices
Luca Coelho [Sun, 31 Jan 2021 18:22:12 +0000 (20:22 +0200)]
iwlwifi: bump FW API to 61 for AX devices

Start supporting API version 61 for AX devices.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210131201908.99428c76c1fc.I2b075d52119d7e4ced6a044f096ee1589c8e631e@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
3 years agoiwlwifi: mvm: add Asus to the PPAG approved list
Luca Coelho [Sun, 31 Jan 2021 18:22:11 +0000 (20:22 +0200)]
iwlwifi: mvm: add Asus to the PPAG approved list

Asus is now approved to use the PPAG feature.  Add it to the approved
list.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210131201908.fae78b768080.Id649ccc8f3b923be2618ad44cd4f7732871e1469@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
3 years agoiwlwifi: mvm: add Microsoft to the PPAG approved list
Luca Coelho [Sun, 31 Jan 2021 18:22:10 +0000 (20:22 +0200)]
iwlwifi: mvm: add Microsoft to the PPAG approved list

Microsoft is now approved to use the PPAG feature.  Add it to the
approved list.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210131201908.ed6cf4960800.I661f14d84f864d3860db6fcb05b7f37ec804b6ef@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
3 years agoiwlwifi: mvm: add Samsung to the PPAG approved list
Luca Coelho [Sun, 31 Jan 2021 18:22:09 +0000 (20:22 +0200)]
iwlwifi: mvm: add Samsung to the PPAG approved list

Samsung is now approved to use the PPAG feature.  Add it to the
approved list.

Signed-off-by: Luca Coelho <luciano.coelho@intel.com>
Link: https://lore.kernel.org/r/iwlwifi.20210131201908.07841f1f45ba.I47eb5a9be3c819683a2175e4db89f366bc9508e2@changeid
Signed-off-by: Luca Coelho <luciano.coelho@intel.com>