platform/kernel/linux-starfive.git
4 years agoath10k: drop RX skb with invalid length for sdio
Wen Gong [Tue, 31 Dec 2019 09:27:06 +0000 (17:27 +0800)]
ath10k: drop RX skb with invalid length for sdio

When simulate random transfer fail for sdio write and read, it crash
sometimes.

Test steps:
1. Add config and update kernel:
CONFIG_FAIL_MMC_REQUEST=y
CONFIG_FAULT_INJECTION=y
CONFIG_FAULT_INJECTION_DEBUG_FS=y

2. run simulate fail:
cd /sys/kernel/debug/mmc1/fail_mmc_request
echo 10 > probability
echo 10 > times # repeat until hitting issues

3. it crash, the act len of ath10k_htc_hdr is higher than allocate len, it cause panic:
[   99.723482] skbuff: skb_over_panic: text:00000000caa0f780 len:57013 put:57013 head:000000004116f24a data:0000000019ecb4dc tail:0xdef5 end:0x640 dev:<NULL>
[   99.737697] ------------[ cut here ]------------
[   99.742327] kernel BUG at /mnt/host/source/src/third_party/kernel/v4.19/net/core/skbuff.c:104!
[   99.750937] Internal error: Oops - BUG: 0 [#1] PREEMPT SMP
[   99.831154] Process kworker/0:2 (pid: 151, stack limit = 0x00000000728010bf)
[   99.838200] CPU: 0 PID: 151 Comm: kworker/0:2 Tainted: G W 4.19.85 #48
[   99.846022] Hardware name: MediaTek krane sku0 board (DT)
[   99.851429] Workqueue: events sdio_irq_work
[   99.855614] pstate: 60000005 (nZCv daif -PAN -UAO)
[   99.860402] pc : skb_panic+0x64/0x68
[   99.863974] lr : skb_panic+0x64/0x68
[   99.867542] sp : ffffff8008833a90
[   99.870850] x29: ffffff8008833ac0 x28: ffffffe52e337370
[   99.876159] x27: ffffffe52e328a90 x26: 000000000000e0d0
[   99.881469] x25: ffffffe52e336b60 x24: 000000000000deb5
[   99.886779] x23: ffffffe52e340680 x22: ffffffe4efd47e00
[   99.892088] x21: 000000000000deb5 x20: ffffffa516d85b4c
[   99.897397] x19: ffffffa526928037 x18: 0000000000000000
[   99.902706] x17: 000000000000003c x16: ffffffa5265b6c80
[   99.908015] x15: 0000000000000006 x14: 3a76656420303436
[   99.913325] x13: 0000000000029bf0 x12: 0000000000000000
[   99.918634] x11: 0000000000000000 x10: 0000000000000000
[   99.923943] x9 : a3b907e4b2783000 x8 : a3b907e4b2783000
[   99.929253] x7 : 0000000000000000 x6 : ffffffa526f66d76
[   99.934563] x5 : 0000000000000000 x4 : 0000000000000000
[   99.939872] x3 : 000000000002a5ab x2 : ffffffe53feed918
[   99.945182] x1 : ffffffe53fee4a08 x0 : 000000000000008e
[   99.950491] Call trace:
[   99.952937]  skb_panic+0x64/0x68
[   99.956165]  skb_put+0x7c/0x84
[   99.959224]  ath10k_sdio_irq_handler+0x740/0xbb8 [ath10k_sdio]
[   99.965055]  process_sdio_pending_irqs+0x58/0x1a4
[   99.969758]  sdio_run_irqs+0x34/0x60
[   99.973329]  sdio_irq_work+0x1c/0x28
[   99.974930] cros-ec-spi spi2.0: SPI transfer timed out
[   99.976904]  process_one_work+0x210/0x410
[   99.976911]  worker_thread+0x234/0x3dc
[   99.976923]  kthread+0x120/0x130
[   99.982090] cros-ec-spi spi2.0: spi transfer failed: -110
[   99.986054]  ret_from_fork+0x10/0x18
[   99.986063] Code: aa1403e2 2a1503e4 a90023e9 97e37d1a (d4210000)
[   99.986068] ---[ end trace cb6d948c5a0fd6c7 ]---
[  100.017250] Kernel panic - not syncing: Fatal exception
[  100.018879] cros-ec-spi spi2.0: Command xfer error (err:-110)
[  100.023659] SMP: stopping secondary CPUs
[  100.023703] Kernel Offset: 0x251dc00000 from 0xffffff8008000000
[  100.023707] CPU features: 0x0,2188200c
[  100.023709] Memory Limit: none

The simulate fail of sdio is not a real sdio transter fail, it only
set an error status in mmc_should_fail_request after the transfer end,
actually the transfer is success, then sdio_io_rw_ext_helper will
return error status and stop transfer the left data. For example,
the really RX len is 286 bytes, then it will split to 2 blocks in
sdio_io_rw_ext_helper, one is 256 bytes, left is 30 bytes, if the
first 256 bytes get an error status by mmc_should_fail_request,then
the left 30 bytes will not read in this RX operation. Then when the
next RX arrive, the left 30 bytes will be considered as the header
of the read, the top 8 bytes will be considered as ath10k_htc_hdr,
but actually the 8 bytes is not the ath10k_htc_hdr, so the act_len
from this ath10k_htc_hdr is not correct, if it is a big value, such
as 57013, it will trigger skb_panic.

Drop the skb with invalid length will be reasonable.

This patch only effect sdio chips.

Tested with QCA6174 SDIO with firmware WLAN.RMH.4.4.1-00029.

Signed-off-by: Wen Gong <wgong@codeaurora.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
4 years agoath10k: use true,false for bool variable
zhengbin [Tue, 24 Dec 2019 14:16:04 +0000 (22:16 +0800)]
ath10k: use true,false for bool variable

Fixes coccicheck warning:

drivers/net/wireless/ath/ath10k/htt_rx.c:2143:2-31: WARNING: Assignment of 0/1 to bool variable

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
4 years agoath10k: Add optional qdss clk
Bjorn Andersson [Mon, 23 Dec 2019 05:48:54 +0000 (21:48 -0800)]
ath10k: Add optional qdss clk

The WiFi firmware found on sm8150 requires that the QDSS clock is
ticking in order to operate, so add an optional clock to the binding to
allow this to be specified in the sm8150 dts and add the clock to the
list of clocks in the driver.

Signed-off-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
4 years agoath10k: pci: Fix comment on ath10k_pci_dump_memory_sram
Bryan O'Donoghue [Thu, 19 Dec 2019 13:15:39 +0000 (13:15 +0000)]
ath10k: pci: Fix comment on ath10k_pci_dump_memory_sram

The description of ath10k_pci_dump_memory_sram() is inaccurate, an error
can never be returned, it is always the length. Update the comment to
reflect.

Fixes: 219cc084c6706 ("ath10k: add memory dump support QCA9984")
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
4 years agoath10k: pci: Only dump ATH10K_MEM_REGION_TYPE_IOREG when safe
Bryan O'Donoghue [Thu, 19 Dec 2019 13:15:38 +0000 (13:15 +0000)]
ath10k: pci: Only dump ATH10K_MEM_REGION_TYPE_IOREG when safe

ath10k_pci_dump_memory_reg() will try to access memory of type
ATH10K_MEM_REGION_TYPE_IOREG however, if a hardware restart is in progress
this can crash a system.

Individual ioread32() time has been observed to jump from 15-20 ticks to >
80k ticks followed by a secure-watchdog bite and a system reset.

Work around this corner case by only issuing the read transaction when the
driver state is ATH10K_STATE_ON.

Tested-on: QCA9988 PCI 10.4-3.9.0.2-00044

Fixes: 219cc084c6706 ("ath10k: add memory dump support QCA9984")
Signed-off-by: Bryan O'Donoghue <bryan.odonoghue@linaro.org>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
4 years agowil6210: use true,false for bool variable
zhengbin [Tue, 24 Dec 2019 14:16:05 +0000 (22:16 +0800)]
wil6210: use true,false for bool variable

Fixes coccicheck warning:

drivers/net/wireless/ath/wil6210/main.c:765:1-14: WARNING: Assignment of 0/1 to bool variable
drivers/net/wireless/ath/wil6210/txrx.c:1143:1-19: WARNING: Assignment of 0/1 to bool variable
drivers/net/wireless/ath/wil6210/wmi.c:1516:4-23: WARNING: Assignment of 0/1 to bool variable
drivers/net/wireless/ath/wil6210/wmi.c:1523:4-23: WARNING: Assignment of 0/1 to bool variable
drivers/net/wireless/ath/wil6210/wmi.c:1538:4-30: WARNING: Assignment of 0/1 to bool variable
drivers/net/wireless/ath/wil6210/wmi.c:1545:4-30: WARNING: Assignment of 0/1 to bool variable

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
4 years agoath9k: use true,false for bool variable
zhengbin [Tue, 24 Dec 2019 14:16:03 +0000 (22:16 +0800)]
ath9k: use true,false for bool variable

Fixes coccicheck warning:

drivers/net/wireless/ath/ath9k/ar9003_aic.c:409:2-12: WARNING: Assignment of 0/1 to bool variable

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: zhengbin <zhengbin13@huawei.com>
Signed-off-by: Kalle Valo <kvalo@codeaurora.org>
4 years agonet: amd: a2065: Use print_hex_dump_debug() helper
Geert Uytterhoeven [Sun, 12 Jan 2020 16:33:54 +0000 (17:33 +0100)]
net: amd: a2065: Use print_hex_dump_debug() helper

Use the print_hex_dump_debug() helper, instead of open-coding the same
operations.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet: amd: a2065: Kill Sun LANCE relics
Geert Uytterhoeven [Sun, 12 Jan 2020 16:32:11 +0000 (17:32 +0100)]
net: amd: a2065: Kill Sun LANCE relics

Remove unused fields, copied from the Sun LANCE driver eons ago.

Signed-off-by: Geert Uytterhoeven <geert@linux-m68k.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agoMerge branch 'IXP4xx-networking-cleanups'
Jakub Kicinski [Sun, 12 Jan 2020 21:05:14 +0000 (13:05 -0800)]
Merge branch 'IXP4xx-networking-cleanups'

Linus Walleij says:

====================
IXP4xx networking cleanups

This is a patch series which jams together Arnds and mine
cleanups for the IXP4xx networking.

I also have patches for device tree support but that
requires more elaborate work, this series is some of
mine and some of Arnds patches that is a good foundation
for his multiplatform work and my device tree work.

These are for application to the networking tree so
that can be taken in one separate sweep.

I have tested the patches for a bit using zeroday builds
and some boots on misc IXP4xx devices and haven't run
into any major problems. We might find some new stuff
as a result from the new compiler coverage.

I had to depromote enabling compiler coverage at one
point in the v2 set because it depended on other patches
making the code more generic.

The change in v3 was simply dropping one offending
patch hardcoding base addresses into the driver.

The change in v4 drops a stable@ tag that was
unnecessary.

This v5 is a rebase of the v4 patch set on top of
net-next.
====================

Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet: ethernet: ixp4xx: Use parent dev for DMA pool
Linus Walleij [Sun, 12 Jan 2020 12:04:50 +0000 (13:04 +0100)]
net: ethernet: ixp4xx: Use parent dev for DMA pool

Use the netdevice struct device .parent field when calling
dma_pool_create(): the .dma_coherent_mask and .dma_mask
pertains to the bus device on the hardware (platform)
bus in this case, not the struct device inside the network
device. This makes the pool allocation work.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agoARM/net: ixp4xx: Pass ethernet physical base as resource
Linus Walleij [Sun, 12 Jan 2020 12:04:49 +0000 (13:04 +0100)]
ARM/net: ixp4xx: Pass ethernet physical base as resource

In order to probe this ethernet interface from the device tree
all physical MMIO regions must be passed as resources. Begin
this rewrite by first passing the port base address as a
resource for all platforms using this driver, remap it in
the driver and avoid using any reference of the statically
mapped virtual address in the driver.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet: ehernet: ixp4xx: Use netdev_* messages
Linus Walleij [Sun, 12 Jan 2020 12:04:48 +0000 (13:04 +0100)]
net: ehernet: ixp4xx: Use netdev_* messages

Simplify and correct a bunch of messages using printk
directly to use the netdev_* macros. I have not changed
all of them, just the low-hanging fruit.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet: ethernet: ixp4xx: Use distinct local variable
Linus Walleij [Sun, 12 Jan 2020 12:04:47 +0000 (13:04 +0100)]
net: ethernet: ixp4xx: Use distinct local variable

Use "ndev" for the struct net_device and "dev" for the
struct device in probe() and remove(). Add the local
"dev" pointer for later use in refactoring.

Take this opportunity to fix inverse christmas tree
coding style.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agonet: ethernet: ixp4xx: Standard module init
Linus Walleij [Sun, 12 Jan 2020 12:04:46 +0000 (13:04 +0100)]
net: ethernet: ixp4xx: Standard module init

The IXP4xx driver was initializing the MDIO bus before even
probing, in the callbacks supposed to be used for setting up
the module itself, and with the side effect of trying to
register the MDIO bus as soon as this module was loaded or
compiled into the kernel whether the device was discovered
or not.

This does not work with multiplatform environments.

To get rid of this: set up the MDIO bus from the probe()
callback and remove it in the remove() callback. Rename
the probe() and remove() calls to reflect the most common
conventions.

Since there is a bit of checking for the ethernet feature
to be present in the MDIO registering function, making the
whole module not even be registered if we can't find an
MDIO bus, we need something similar: register the MDIO
bus when the corresponding ethernet is probed, and
return -EPROBE_DEFER on the other interfaces until this
happens. If no MDIO bus is present on any of the
registered interfaces we will eventually bail out.

None of the platforms I've seen has e.g. MDIO on EthB
and only uses EthC, there is always a Ethernet hardware
on the NPE (B, C) that has the MDIO bus, we just might
have to wait for it.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agoixp4xx_eth: move platform_data definition
Arnd Bergmann [Sun, 12 Jan 2020 12:04:45 +0000 (13:04 +0100)]
ixp4xx_eth: move platform_data definition

The platform data is needed to compile the driver as standalone,
so move it to a global location along with similar files.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agoptp: ixp46x: move adjacent to ethernet driver
Arnd Bergmann [Sun, 12 Jan 2020 12:04:44 +0000 (13:04 +0100)]
ptp: ixp46x: move adjacent to ethernet driver

The ixp46x ptp driver has a somewhat unusual setup, where the ptp
driver and the ethernet driver are in different directories but
access the same registers that are defined a platform specific
header file.

Moving everything into drivers/net/ makes it look more like most
other ptp drivers and allows compile-testing this driver on
other targets.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agowan: ixp4xx_hss: prepare compile testing
Arnd Bergmann [Sun, 12 Jan 2020 12:04:43 +0000 (13:04 +0100)]
wan: ixp4xx_hss: prepare compile testing

The ixp4xx_hss driver needs the platform data definition and the
system clock rate to be compiled. Move both into a new platform_data
header file.

This is a prerequisite for compile testing, but turning on compile
testing requires further patches to isolate the SoC headers.

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agowan: ixp4xx_hss: fix compile-testing on 64-bit
Arnd Bergmann [Sun, 12 Jan 2020 12:04:42 +0000 (13:04 +0100)]
wan: ixp4xx_hss: fix compile-testing on 64-bit

Change the driver to use portable integer types to avoid
warnings during compile testing:

drivers/net/wan/ixp4xx_hss.c:863:21: error: cast to 'u32 *' (aka 'unsigned int *') from smaller integer type 'int' [-Werror,-Wint-to-pointer-cast]
        memcpy_swab32(mem, (u32 *)((int)skb->data & ~3), bytes / 4);
                           ^
drivers/net/wan/ixp4xx_hss.c:979:12: error: incompatible pointer types passing 'u32 *' (aka 'unsigned int *') to parameter of type 'dma_addr_t *' (aka 'unsigned long long *') [-Werror,-Wincompatible-pointer-types]
                                              &port->desc_tab_phys)))
                                              ^~~~~~~~~~~~~~~~~~~~
include/linux/dmapool.h:27:20: note: passing argument to parameter 'handle' here
                     dma_addr_t *handle);
                                 ^

Signed-off-by: Arnd Bergmann <arnd@arndb.de>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agomlx4: Bump up MAX_MSIX from 64 to 128
Jonathan Lemon [Thu, 9 Jan 2020 19:23:17 +0000 (11:23 -0800)]
mlx4: Bump up MAX_MSIX from 64 to 128

On modern hardware with a large number of cpus and using XDP,
the current MSIX limit is insufficient.  Bump the limit in
order to allow more queues.

Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Reviewed-by: Jack Wang <jinpu.wang@cloud.ionos.com>
Reviewed-by: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
4 years agoMerge branch 'hns3-next'
David S. Miller [Sat, 11 Jan 2020 22:52:56 +0000 (14:52 -0800)]
Merge branch 'hns3-next'

Huazhong Tan says:

====================
net: hns3: add some misc update about reset issue

This series includes some misc update relating to reset issue.
[patch 1/7] & [patch 2/7] splits hclge_reset()/hclgevf_reset()
into two parts: preparing and rebuilding. Since the procedure
of FLR should be separated out from the reset task([patch 3/7 &
patch 3/7]), then the FLR's processing can reuse these codes.

pci_error_handlers.reset_prepare() is void type function, so
[patch 6/7] & [patch 7/7] factor some codes related to PF
function reset to make the preparing done before .reset_prepare()
return.

BTW, [patch 5/7] enlarges the waiting time of reset for matching
the hardware's.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: refactor the notification scheme of PF reset
Huazhong Tan [Sat, 11 Jan 2020 08:33:53 +0000 (16:33 +0800)]
net: hns3: refactor the notification scheme of PF reset

hclge_reset_prepare_down() is only used to inform VF that PF is
going to do function reset, then using hclge_func_reset_sync_vf()
in hclge_reset_prepare_wait() to query whether VF is ready before
asserting PF function reset. To make the code more readable,
this patch uses a new function hclge_function_reset_notify_vf()
to do this job.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: modify hclge_func_reset_sync_vf()'s return type to void
Huazhong Tan [Sat, 11 Jan 2020 08:33:52 +0000 (16:33 +0800)]
net: hns3: modify hclge_func_reset_sync_vf()'s return type to void

When synchronizes with VFs fail before PF function reset,
PF driver should go on its function reset, otherwise it
can not run normally anymore. So, hclge_func_reset_sync_vf()
should not affect the processing of PF reset, this patch
modifies its return type to void.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: enlarge HCLGE_RESET_WAIT_CNT
Huazhong Tan [Sat, 11 Jan 2020 08:33:51 +0000 (16:33 +0800)]
net: hns3: enlarge HCLGE_RESET_WAIT_CNT

When the load of firmware is high, its reset task may takes
more time(which will be as long as 35 seconds). So this
patch modifies HCLGE_RESET_WAIT_CNT to match the firmware's.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: refactor the procedure of VF FLR
Huazhong Tan [Sat, 11 Jan 2020 08:33:50 +0000 (16:33 +0800)]
net: hns3: refactor the procedure of VF FLR

Currently, the actual work of VF FLR is handled in the reset task,
which is asynchronous. So in some case, if the preparing and
rebuilding are not done, then the VF FLR will trigger some problems,
for example, makes hardware go into chaos.

So this patch separates the process of VF FLR from reset task, and
adds a semaphore to serialize this reset and others.

When FLR's preparing fails, if there has other higher level reset
pending or failing times less than the HCLGE_FLR_RETRY_CNT, this
preparing should be retried, otherwise it will get into a wrong state.

BTW, while the hardware reports misc interrupt during pcie_flr(),
the driver can not receive this interrupt anymore, so disable it
when hclgevf_flr_prepare() return, and re-enable it when enter
hclgevf_flr_done().

Avoid declaring internal function hclgevf_enable_vector(), this patch
also moves its definition forward, and removes unused enum
hnae3_flr_state.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: refactor the precedure of PF FLR
Huazhong Tan [Sat, 11 Jan 2020 08:33:49 +0000 (16:33 +0800)]
net: hns3: refactor the precedure of PF FLR

Currently, the actual work of PF FLR is handled in the reset task,
which is asynchronous. So in some case, if the preparing and
rebuilding are not done, then the PF FLR will trigger some problems,
for example, makes hardware go into chaos.

So this patch separates the process of PF FLR from reset task, and
adds a semaphore to serialize this reset and others.

When FLR's preparing fails, if there has other higher level reset
pending or failing times less than the HCLGE_FLR_RETRY_CNT, this
preparing should be retried, otherwise PF and its VF may get into
wrong state.

BTW, while the hardware reports misc interrupt during pcie_flr(),
the driver can not receive this interrupt anymore, so disable it
when hclge_flr_prepare() return, and re-enable it when enter
hclge_flr_done().

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: split hclgevf_reset() into preparing and rebuilding part
Huazhong Tan [Sat, 11 Jan 2020 08:33:48 +0000 (16:33 +0800)]
net: hns3: split hclgevf_reset() into preparing and rebuilding part

hclgevf_reset() is a little bloated, and the process of VF FLR will
be separated from the reset task later. So this patch splits
hclgevf_reset() into hclgevf_reset_prepare() and hclge_reset_rebuild(),
then FLR can also reuse these two functions. Also moves HNAE3_UP_CLIENT
into hclgevf_reset_stack().

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: hns3: split hclge_reset() into preparing and rebuilding part
Huazhong Tan [Sat, 11 Jan 2020 08:33:47 +0000 (16:33 +0800)]
net: hns3: split hclge_reset() into preparing and rebuilding part

hclge_reset() is a little bloated, and the process of PF FLR will
be separated from the reset task later. So this patch splits
hclge_reset() into hclge_reset_prepare() and hclge_reset_rebuild(),
then FLR can also reuse these two functions.

BTW, since hclge_clear_reset_cause() and hclge_reset_prepare_up()
will not affect the device, so in hclge_reset_rebuild(), these
functions are called without rtnl_lock.

Signed-off-by: Huazhong Tan <tanhuazhong@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: remove set but not used variable 'nic_data'
YueHaibing [Fri, 10 Jan 2020 06:09:08 +0000 (06:09 +0000)]
sfc: remove set but not used variable 'nic_data'

Fixes gcc '-Wunused-but-set-variable' warning:

drivers/net/ethernet/sfc/mcdi_functions.c: In function 'efx_mcdi_ev_init':
drivers/net/ethernet/sfc/mcdi_functions.c:79:28: warning:
 variable 'nic_data' set but not used [-Wunused-but-set-variable]

commit 4438b587fe4b ("sfc: move MCDI event queue management code")
introduces this unused variable.

Reported-by: Hulk Robot <hulkci@huawei.com>
Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: remove duplicated include from ef10.c
YueHaibing [Fri, 10 Jan 2020 01:35:17 +0000 (01:35 +0000)]
sfc: remove duplicated include from ef10.c

Remove duplicated include.

Signed-off-by: YueHaibing <yuehaibing@huawei.com>
Acked-by: Edward Cree <ecree@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agobnxt: Detach page from page pool before sending up the stack
Jonathan Lemon [Thu, 9 Jan 2020 19:35:42 +0000 (11:35 -0800)]
bnxt: Detach page from page pool before sending up the stack

When running in XDP mode, pages come from the page pool, and should
be freed back to the same pool or specifically detached.  Currently,
when the driver re-initializes, the page pool destruction is delayed
forever since it thinks there are oustanding pages.

Fixes: 322b87ca55f2 ("bnxt_en: add page_pool support")
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Reviewed-by: Andy Gospodarek <gospo@broadcom.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'devlink-documentation-refactor'
David S. Miller [Sat, 11 Jan 2020 01:07:00 +0000 (17:07 -0800)]
Merge branch 'devlink-documentation-refactor'

Jacob Keller says:

====================
devlink documentation refactor

This series updates the devlink documentation, with a few primary goals

 * move all of the devlink documentation into a dedicated subfolder
 * convert that documentation to the reStructuredText format
 * merge driver-specific documentations into a single file per driver
 * add missing documentation, including per-driver and devlink generally

For each driver, I took the time to review the code and add further
documentation on the various features it currently supports. Additionally, I
added new documentation files for some of the features such as
devlink-dpipe, devlink-resource, and devlink-regions.

Note for the region snapshot triggering, I kept that as a separate patch as
that is based on work that has not yet been merged to net-next, and may
change.

I also improved the existing documentation for devlink-info and
devlink-param by adding a bit more of an introduction when converting it to
the rst format.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: document region snapshot triggering from userspace
Jacob Keller [Thu, 9 Jan 2020 22:46:25 +0000 (14:46 -0800)]
devlink: document region snapshot triggering from userspace

Now that devlink regions can be triggered via
DEVLINK_CMD_REGION_TRIGGER, document this in the devlink-region.rst
file.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: introduce devlink-dpipe.rst documentation file
Jacob Keller [Thu, 9 Jan 2020 22:46:24 +0000 (14:46 -0800)]
devlink: introduce devlink-dpipe.rst documentation file

Primarily based on the DPIPE netdev conference paper, introduce a new
file to document the dpipe interface.

This likely needs further improvement, but is at least a good overall
start.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: add a devlink-resource.rst documentation file
Jacob Keller [Thu, 9 Jan 2020 22:46:23 +0000 (14:46 -0800)]
devlink: add a devlink-resource.rst documentation file

Take the little bit of documentation for resources from various commit
messages and combine it into a new devlink-resource.rst file.

This could probably be expanded on even further by someone with more
knowledge of how the devlink resources work.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: rename and expand devlink-trap-netdevsim.rst
Jacob Keller [Thu, 9 Jan 2020 22:46:22 +0000 (14:46 -0800)]
devlink: rename and expand devlink-trap-netdevsim.rst

Rename the trap-specific netdevimsim.rst file, and expand it to include
documentation of all the devlink features currently implemented by the
netdevsim driver code.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: add documentation for ionic device driver
Jacob Keller [Thu, 9 Jan 2020 22:46:21 +0000 (14:46 -0800)]
devlink: add documentation for ionic device driver

The IONIC device driver allocates a devlink and reports versions. Add
documentation for this driver.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Shannon Nelson <snelson@pensando.io>
Acked-by: Shannon Nelson <snelson@pensandi.io>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: add a file documenting devlink regions
Jacob Keller [Thu, 9 Jan 2020 22:46:20 +0000 (14:46 -0800)]
devlink: add a file documenting devlink regions

Also document the regions created by the mlx4 driver. This is currently
the only in-tree driver that creates devlink region snapshots.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: add a driver-specific file for the qed driver
Jacob Keller [Thu, 9 Jan 2020 22:46:19 +0000 (14:46 -0800)]
devlink: add a driver-specific file for the qed driver

The qed driver recently added devlink support with a single devlink
parameter. Add a driver-specific file to document the devlink features
that the qed driver supports.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Ariel Elior <aelior@marvell.com>
Cc: GR-everest-linux-l2@marvell.com
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: add parameter documentation for the mlx4 driver
Jacob Keller [Thu, 9 Jan 2020 22:46:18 +0000 (14:46 -0800)]
devlink: add parameter documentation for the mlx4 driver

The mlx5 and mlxsw drivers have driver-specific documentation for the
devlink features they support. No such file was added for mlx4.

Add a file to document the mlx4 devlink support. Initially it contains
only the devlink parameters.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: document info versions for each driver
Jacob Keller [Thu, 9 Jan 2020 22:46:17 +0000 (14:46 -0800)]
devlink: document info versions for each driver

Add the set of info versions reported by each device driver, including
a description of what the version represents, and what modes (fixed,
running, stored) it reports.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: convert driver-specific files to reStructuredText
Jacob Keller [Thu, 9 Jan 2020 22:46:16 +0000 (14:46 -0800)]
devlink: convert driver-specific files to reStructuredText

Several drivers document what parameters they support in
a devlink-params-*.txt file. This file is supposed to contain both the
list of generic parameters implemented by the driver, as well as a list
of driver-specific parameters and their descriptions.

It would also be good if the driver documentation included other
driver-specific implementations, such as info versions, devlink
regions, and so forth.

Convert all of these documentation files to reStructuredText, and rename
them to just the driver name. Future changes will include other
driver-specific implementations. Each file will contain a table for the
generic parameters implemented, as well as a separate table for the
driver-specific parameters.

Future sections such as for devlink info versions will be added to these
files. This avoids creating additional devlink-<feature>-<driver> files
for each devlink feature, reducing clutter in the documentation folder.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Cc: Tariq Toukan <tariqt@mellanox.com>
Cc: Saeed Mahameed <saeedm@mellanox.com>
Cc: Leon Romanovsky <leonro@mellanox.com>
Cc: Michael Chan <michael.chan@broadcom.com>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Vivien Didelot <vivien.didelot@gmail.com>
Cc: Jiri Pirko <jiri@mellanox.com>
Cc: Ido Schimmel <idosch@mellanox.com>
Cc: Jakub Kicinski <jakub.kicinski@netronome.com>
Cc: Grygorii Strashko <grygorii.strashko@ti.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: mention reloading in devlink-params.rst
Jacob Keller [Thu, 9 Jan 2020 22:46:15 +0000 (14:46 -0800)]
devlink: mention reloading in devlink-params.rst

Mention that drivers must support devlink-reload in order for driverinit
parameters to function properly

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: add documentation for generic devlink parameters
Jacob Keller [Thu, 9 Jan 2020 22:46:14 +0000 (14:46 -0800)]
devlink: add documentation for generic devlink parameters

A few generic devlink parameters have been added, but never documented.
Fix that now.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: convert devlink-params.txt to reStructuredText
Jacob Keller [Thu, 9 Jan 2020 22:46:13 +0000 (14:46 -0800)]
devlink: convert devlink-params.txt to reStructuredText

Convert the generic parameters descriptions into the reStructuredText
format.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: rename devlink-info-versions.rst and add a header
Jacob Keller [Thu, 9 Jan 2020 22:46:12 +0000 (14:46 -0800)]
devlink: rename devlink-info-versions.rst and add a header

Rename the devlink-info-versions.rst file to a plain devlink-info.rst
file. Add additional paragraphs explaining what devlink-info is for,
and the expectation that drivers use the generic names where plausible.

Note that drivers which use non-standard info version names ought to
document these in a driver-specific info-versions.rst file.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: convert devlink-health.txt to rst format
Jacob Keller [Thu, 9 Jan 2020 22:46:11 +0000 (14:46 -0800)]
devlink: convert devlink-health.txt to rst format

Update the devlink-health documentation to use the newer
ReStructuredText format.

Note that it's unclear what OOB stood for, and it has been left as-is
without a proper first-use expansion of the acronym.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: move devlink documentation to subfolder
Jacob Keller [Thu, 9 Jan 2020 22:46:10 +0000 (14:46 -0800)]
devlink: move devlink documentation to subfolder

Combine the documentation for devlink into a subfolder, and provide an
index.rst file that can be used to generally describe devlink.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agodevlink: add macro for "fw.psid"
Jacob Keller [Thu, 9 Jan 2020 22:46:09 +0000 (14:46 -0800)]
devlink: add macro for "fw.psid"

The "fw.psid" devlink info version is documented in devlink-info.rst,
and used by one driver. However, there is no associated macro for this
firmware version like there is for others. Add one now.

Signed-off-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'r8169-factor-out-chip-specific-PHY-configuration-to-a-separate-source...
David S. Miller [Sat, 11 Jan 2020 00:41:35 +0000 (16:41 -0800)]
Merge branch 'r8169-factor-out-chip-specific-PHY-configuration-to-a-separate-source-file'

Heiner Kallweit says:

====================
r8169: factor out chip-specific PHY configuration to a separate source file

Basically every chip version needs its own PHY configuration.
To improve maintainability of the driver move all these PHY
configurations to a separate source file. To allow this we first have
to change all PHY configurations to use phylib functions wherever
possible.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: factor out PHY configuration to r8169_phy_config.c
Heiner Kallweit [Thu, 9 Jan 2020 19:34:55 +0000 (20:34 +0100)]
r8169: factor out PHY configuration to r8169_phy_config.c

Move chip-specific PHY configurations to separate source file
r8169_phy_config.c. This improves maintainability of the driver.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: add r8169.h
Heiner Kallweit [Thu, 9 Jan 2020 19:34:05 +0000 (20:34 +0100)]
r8169: add r8169.h

In preparation of factoring out PHY configuration to a separate source
file move commonly used definitions to new header file r8169.h.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: rename rtl_apply_firmware
Heiner Kallweit [Thu, 9 Jan 2020 19:33:13 +0000 (20:33 +0100)]
r8169: rename rtl_apply_firmware

Rename rtl_apply_firmware() to r8169_apply_firmware() before exporting
it to avoid namespace clashes with other drivers for Realtek hardware.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: add phydev argument to rtl8168d_apply_firmware_cond
Heiner Kallweit [Thu, 9 Jan 2020 19:32:36 +0000 (20:32 +0100)]
r8169: add phydev argument to rtl8168d_apply_firmware_cond

Pass the phy_device as parameter to rtl8168d_apply_firmware_cond(),
this avoids having to access rtl8169_private internals.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: use phy_read/write instead of rtl_readphy/writephy
Heiner Kallweit [Thu, 9 Jan 2020 19:31:47 +0000 (20:31 +0100)]
r8169: use phy_read/write instead of rtl_readphy/writephy

Replace rtl_writephy and rtl_readphy with the respective phylib
functions.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: replace rtl_w0w1_phy
Heiner Kallweit [Thu, 9 Jan 2020 19:31:10 +0000 (20:31 +0100)]
r8169: replace rtl_w0w1_phy

Replace rtl_w0w1_phy with phylib functions.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: replace rtl_patchphy
Heiner Kallweit [Thu, 9 Jan 2020 19:30:37 +0000 (20:30 +0100)]
r8169: replace rtl_patchphy

Replace rtl_patchphy with phylib functions.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: move disabling MAC EEE for RTL8402/RTL8106e
Heiner Kallweit [Thu, 9 Jan 2020 19:30:00 +0000 (20:30 +0100)]
r8169: move disabling MAC EEE for RTL8402/RTL8106e

Move configuring EEE on MAC side out of the PHY configuration.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: move setting ERI register 0x1d0 for RTL8106
Heiner Kallweit [Thu, 9 Jan 2020 19:29:21 +0000 (20:29 +0100)]
r8169: move setting ERI register 0x1d0 for RTL8106

Writing this ERI register is a MAC setting, so move it to
rtl_hw_start_8106().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: switch to phylib functions in rtl_writephy_batch
Heiner Kallweit [Thu, 9 Jan 2020 19:28:45 +0000 (20:28 +0100)]
r8169: switch to phylib functions in rtl_writephy_batch

Switch rtl_writephy_batch() to phylib functions, as a result we can
avoid passing a rtl8169_private parameter.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: change argument type of RTL8168g-specific PHY config functions
Heiner Kallweit [Thu, 9 Jan 2020 19:28:08 +0000 (20:28 +0100)]
r8169: change argument type of RTL8168g-specific PHY config functions

These functions use only the phy_device member of rtl8169_private,
so we can pass the phy_device as parameter directly.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: change argument type of EEE PHY functions
Heiner Kallweit [Thu, 9 Jan 2020 19:27:33 +0000 (20:27 +0100)]
r8169: change argument type of EEE PHY functions

These functions use only the phy_device member of rtl8169_private,
so we can pass the phy_device as parameter directly.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: move RTL8169scd Gigabyte PHY quirk
Heiner Kallweit [Thu, 9 Jan 2020 19:26:59 +0000 (20:26 +0100)]
r8169: move RTL8169scd Gigabyte PHY quirk

In preparation of factoring out rtl8169scd_hw_phy_config() move this
quirk to rtl8169_init_phy().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: remove not needed debug print in rtl8169_init_phy
Heiner Kallweit [Thu, 9 Jan 2020 19:26:19 +0000 (20:26 +0100)]
r8169: remove not needed debug print in rtl8169_init_phy

Remove a useless debug statement. This also allows to remove the
net_device parameter from rtl8169_init_phy().

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agor8169: prepare for exporting rtl_hw_phy_config
Heiner Kallweit [Thu, 9 Jan 2020 19:25:31 +0000 (20:25 +0100)]
r8169: prepare for exporting rtl_hw_phy_config

In preperation of factoring out the PHY configuration to a separate
source file this patch:
- avoids accessing rtl8169_private internals by passing the phy_device
  and mac_version as separate parameters
- renames rtl_hw_phy_config to r8169_hw_phy_config to avoid namespace
  clashes with other drivers for Realtek hardware

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'stmmac-Frame-Preemption-fixes'
David S. Miller [Fri, 10 Jan 2020 19:29:44 +0000 (11:29 -0800)]
Merge branch 'stmmac-Frame-Preemption-fixes'

Jose Abreu says:

====================
net: stmmac: Frame Preemption fixes

Two single fixes for the -next tree for recently introduced Frame Preemption
feature.

1) and 2) fixes the disabling of Frame Preemption that was not being correctly
handled because of a missing return.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: gmac5+: Fix missing return
Jose Abreu [Fri, 10 Jan 2020 15:13:35 +0000 (16:13 +0100)]
net: stmmac: gmac5+: Fix missing return

If FPE is supposed to be disabled we need to return after disabling it.

Fixes: 7c7282746883 ("net: stmmac: gmac5+: Add support for Frame Preemption")
Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: xgmac: Fix missing return
Jose Abreu [Fri, 10 Jan 2020 15:13:34 +0000 (16:13 +0100)]
net: stmmac: xgmac: Fix missing return

If FPE is supposed to be disabled we need to return after disabling it.

Fixes: f0e56c8d8f7d ("net: stmmac: xgmac3+: Add support for Frame Preemption")
Signed-off-by: Jose Abreu <Jose.Abreu@synopsys.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'sfc-even-more-code-refactoring'
David S. Miller [Fri, 10 Jan 2020 19:24:37 +0000 (11:24 -0800)]
Merge branch 'sfc-even-more-code-refactoring'

Alex Maftei says:

====================
sfc: even more code refactoring

Splitting even more of the driver code into different files, which
will later be used in another driver for a new product.

This is a continuation to my previous patch series, and the one
before it.
There will be a stand-alone patch as well after this - after which
the refactoring will be concluded, for now.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: move RPS code
Alex Maftei (amaftei) [Fri, 10 Jan 2020 13:28:45 +0000 (13:28 +0000)]
sfc: move RPS code

Includes a couple of filtering functions and also renames a constant.

Style fixes included.

Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: move yet more functions
Alex Maftei (amaftei) [Fri, 10 Jan 2020 13:28:23 +0000 (13:28 +0000)]
sfc: move yet more functions

Functions are not related.

Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: move RSS code
Alex Maftei (amaftei) [Fri, 10 Jan 2020 13:28:07 +0000 (13:28 +0000)]
sfc: move RSS code

Style fixes included.

Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: move a couple more functions
Alex Maftei (amaftei) [Fri, 10 Jan 2020 13:27:50 +0000 (13:27 +0000)]
sfc: move a couple more functions

Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: move some ethtool code
Alex Maftei (amaftei) [Fri, 10 Jan 2020 13:27:32 +0000 (13:27 +0000)]
sfc: move some ethtool code

Various ethtool entry points are moved.

Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: move various functions
Alex Maftei (amaftei) [Fri, 10 Jan 2020 13:27:17 +0000 (13:27 +0000)]
sfc: move various functions

Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: move more rx code
Alex Maftei (amaftei) [Fri, 10 Jan 2020 13:27:03 +0000 (13:27 +0000)]
sfc: move more rx code

Page recycling code and GRO packet receipt code were moved.

One function contains code extracted from another.

Code style fixes included.

Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: move more tx code
Alex Maftei (amaftei) [Fri, 10 Jan 2020 13:26:46 +0000 (13:26 +0000)]
sfc: move more tx code

The code that handles transmission finalization will also be common.

Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: refactor selftest work init code
Alex Maftei (amaftei) [Fri, 10 Jan 2020 13:26:34 +0000 (13:26 +0000)]
sfc: refactor selftest work init code

Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'mptcp-prereq'
David S. Miller [Fri, 10 Jan 2020 02:41:42 +0000 (18:41 -0800)]
Merge branch 'mptcp-prereq'

Mat Martineau says:

====================
Multipath TCP: Prerequisites

v6 -> v7: Rename/move ULP clone helper to make inline-friendly (patch 5)

v5 -> v6: Fix BPF accessors for sk_type and sk_protocol (patch 2), fix
the width of an __unused bitfield (patch 6), and add some commit message
and comment text (patches 5 & 7).

v4 -> v5: Cover letter subject fix. No changes to commits.

v3 -> v4: Update coalesce/collapse of incoming MPTCP skbs (patch 7)

v2 -> v3: Ensure sk_type alignment in struct sock (patch 2)

v1 -> v2: sk_pacing_shift left as a regular struct member (patch 2), and
modified SACK space check based on recent -net fix (patch 9).

The MPTCP upstreaming community has been collaborating on an
upstreamable MPTCP implementation that complies with RFC 8684. A minimal
set of features to comply with the specification involves a sizeable set
of code changes, so David requested that we split this work in to
multiple, smaller patch sets to build up MPTCP infrastructure.

The minimal MPTCP feature set we are proposing for review in the v5.6
timeframe begins with these three parts:

Part 1 (this patch set): MPTCP prerequisites. Introduce some MPTCP
definitions, additional ULP and skb extension features, TCP option space
checking, and a few exported symbols.

Part 2: Single subflow implementation and self tests.

Part 3: Switch from MPTCP v0 (RFC 6824) to MPTCP v1 (new RFC 8684,
publication expected in the next few days).

Additional patches for multiple subflow support, path management, active
backup, and other features are in the pipeline for submission after
making progress with the above reviews.

Clone/fetch:
https://github.com/multipath-tcp/mptcp_net-next.git (tag: netdev-v7-part1)

Browse:
https://github.com/multipath-tcp/mptcp_net-next/tree/netdev-v7-part1

Thank you for your review. You can find us at mptcp@lists.01.org and
https://is.gd/mptcp_upstream
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoskb: add helpers to allocate ext independently from sk_buff
Paolo Abeni [Thu, 9 Jan 2020 15:59:24 +0000 (07:59 -0800)]
skb: add helpers to allocate ext independently from sk_buff

Currently we can allocate the extension only after the skb,
this change allows the user to do the opposite, will simplify
allocation failure handling from MPTCP.

Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agotcp: clean ext on tx recycle
Paolo Abeni [Thu, 9 Jan 2020 15:59:23 +0000 (07:59 -0800)]
tcp: clean ext on tx recycle

Otherwise we will find stray/unexpected/old extensions value on next
iteration.

On tcp_write_xmit() we can end-up splitting an already queued skb in two
parts, via tso_fragment(). The newly created skb can be allocated via
the tx cache and an upper layer will not be aware of it, so that upper
layer cannot set the ext properly.

Resetting the ext on recycle ensures that stale data is not propagated
in to packet headers or elsewhere.

An alternative would be add an additional hook in tso_fragment() or in
sk_stream_alloc_skb() to init the ext for upper layers that need it.

Co-developed-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Florian Westphal <fw@strlen.de>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agotcp: Check for filled TCP option space before SACK
Mat Martineau [Thu, 9 Jan 2020 15:59:22 +0000 (07:59 -0800)]
tcp: Check for filled TCP option space before SACK

Update the SACK check to work with zero option space available, a case
that's possible with MPTCP but not MD5+TS. Maintained only one
conditional branch for insufficient SACK space.

v1 -> v2:
- Moves the check inside the SACK branch by taking recent SACK fix:

    9424e2e7ad93 (tcp: md5: fix potential overestimation of TCP option space)

  in to account, but modifies it to work in MPTCP scenarios beyond the
  MD5+TS corner case.

Co-developed-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agotcp: Export TCP functions and ops struct
Mat Martineau [Thu, 9 Jan 2020 15:59:21 +0000 (07:59 -0800)]
tcp: Export TCP functions and ops struct

MPTCP will make use of tcp_send_mss() and tcp_push() when sending
data to specific TCP subflows.

tcp_request_sock_ipvX_ops and ipvX_specific will be referenced
during TCP subflow creation.

Co-developed-by: Peter Krystad <peter.krystad@linux.intel.com>
Signed-off-by: Peter Krystad <peter.krystad@linux.intel.com>
Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agotcp: coalesce/collapse must respect MPTCP extensions
Mat Martineau [Thu, 9 Jan 2020 15:59:20 +0000 (07:59 -0800)]
tcp: coalesce/collapse must respect MPTCP extensions

Coalesce and collapse of packets carrying MPTCP extensions is allowed
when the newer packet has no extension or the extensions carried by both
packets are equal.

This allows merging of TSO packet trains and even cross-TSO packets, and
does not require any additional action when moving data into existing
SKBs.

v3 -> v4:
 - allow collapsing, under mptcp_skb_can_collapse() constraint

v5 -> v6:
 - clarify MPTCP skb extensions must always be cleared at allocation
   time

Co-developed-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomptcp: Add MPTCP to skb extensions
Mat Martineau [Thu, 9 Jan 2020 15:59:19 +0000 (07:59 -0800)]
mptcp: Add MPTCP to skb extensions

Add enum value for MPTCP and update config dependencies

v5 -> v6:
 - fixed '__unused' field size

Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Co-developed-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agotcp, ulp: Add clone operation to tcp_ulp_ops
Mat Martineau [Thu, 9 Jan 2020 15:59:18 +0000 (07:59 -0800)]
tcp, ulp: Add clone operation to tcp_ulp_ops

If ULP is used on a listening socket, icsk_ulp_ops and icsk_ulp_data are
copied when the listener is cloned. Sometimes the clone is immediately
deleted, which will invoke the release op on the clone and likely
corrupt the listening socket's icsk_ulp_data.

The clone operation is invoked immediately after the clone is copied and
gives the ULP type an opportunity to set up the clone socket and its
icsk_ulp_data.

The MPTCP ULP clone will silently fallback to plain TCP on allocation
failure, so 'clone()' does not need to return an error code.

v6 -> v7:
 - move and rename ulp clone helper to make it inline-friendly
v5 -> v6:
 - clarified MPTCP clone usage in commit message

Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agotcp: Add MPTCP option number
Mat Martineau [Thu, 9 Jan 2020 15:59:17 +0000 (07:59 -0800)]
tcp: Add MPTCP option number

TCP option 30 is allocated for MPTCP by the IANA.

Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agotcp: Define IPPROTO_MPTCP
Mat Martineau [Thu, 9 Jan 2020 15:59:16 +0000 (07:59 -0800)]
tcp: Define IPPROTO_MPTCP

To open a MPTCP socket with socket(AF_INET, SOCK_STREAM, IPPROTO_MPTCP),
IPPROTO_MPTCP needs a value that differs from IPPROTO_TCP. The existing
IPPROTO numbers mostly map directly to IANA-specified protocol numbers.
MPTCP does not have a protocol number allocated because MPTCP packets
use the TCP protocol number. Use private number not used OTA.

Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosock: Make sk_protocol a 16-bit value
Mat Martineau [Thu, 9 Jan 2020 15:59:15 +0000 (07:59 -0800)]
sock: Make sk_protocol a 16-bit value

Match the 16-bit width of skbuff->protocol. Fills an 8-bit hole so
sizeof(struct sock) does not change.

Also take care of BPF field access for sk_type/sk_protocol. Both of them
are now outside the bitfield, so we can use load instructions without
further shifting/masking.

v5 -> v6:
 - update eBPF accessors, too (Intel's kbuild test robot)
v2 -> v3:
 - keep 'sk_type' 2 bytes aligned (Eric)
v1 -> v2:
 - preserve sk_pacing_shift as bit field (Eric)

Cc: Alexei Starovoitov <ast@kernel.org>
Cc: Daniel Borkmann <daniel@iogearbox.net>
Cc: bpf@vger.kernel.org
Co-developed-by: Paolo Abeni <pabeni@redhat.com>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Co-developed-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Matthieu Baerts <matthieu.baerts@tessares.net>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: Make sock protocol value checks more specific
Mat Martineau [Thu, 9 Jan 2020 15:59:14 +0000 (07:59 -0800)]
net: Make sock protocol value checks more specific

SK_PROTOCOL_MAX is only used in two places, for DECNet and AX.25. The
limits have more to do with the those protocol definitions than they do
with the data type of sk_protocol, so remove SK_PROTOCOL_MAX and use
U8_MAX directly.

Reviewed-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Mat Martineau <mathew.j.martineau@linux.intel.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoflow_dissector: fix document for skb_flow_get_icmp_tci
Li RongQing [Thu, 9 Jan 2020 00:59:56 +0000 (08:59 +0800)]
flow_dissector: fix document for skb_flow_get_icmp_tci

using correct input parameter name to fix the below warning:

net/core/flow_dissector.c:242: warning: Function parameter or member 'thoff' not described in 'skb_flow_get_icmp_tci'
net/core/flow_dissector.c:242: warning: Excess function parameter 'toff' description in 'skb_flow_get_icmp_tci'

Signed-off-by: Li RongQing <lirongqing@baidu.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet/ncsi: Support for multi host mellanox card
Vijay Khemka [Wed, 8 Jan 2020 23:43:40 +0000 (15:43 -0800)]
net/ncsi: Support for multi host mellanox card

Multi host Mellanox cards require MAC affinity to be set
before receiving any config commands. All config commands
should also have unicast address for source address in
command header.

Adding GMA and SMAF(Set Mac Affinity) for Mellanox card
and call these in channel probe state machine if it is
defined in device tree.

Signed-off-by: Vijay Khemka <vijaykhemka@fb.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agonet: stmmac: pci: remove the duplicate code of set phy_mask
Dejin Zheng [Wed, 8 Jan 2020 13:56:49 +0000 (21:56 +0800)]
net: stmmac: pci: remove the duplicate code of set phy_mask

All members of mdio_bus_data are cleared to 0 when it was obtained
by devm_kzalloc(). so It doesn't need to set phy_mask as 0 again.

Signed-off-by: Dejin Zheng <zhengdejin5@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'mlxsw-Firmware-version-updates'
David S. Miller [Thu, 9 Jan 2020 20:35:53 +0000 (12:35 -0800)]
Merge branch 'mlxsw-Firmware-version-updates'

Ido Schimmel says:

====================
mlxsw: Firmware version updates

This patch sets contains two firmware-related updates.

Patch #1 bumps the required firmware version in order to support 2x50
Gb/s split on SN3800 systems.

Patch #2 changes the driver to only enforce a minimum required firmware
version, which should allow us to reduce the frequency in which we need
to update the driver.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomlxsw: spectrum: Only require minimum firmware version
Ido Schimmel [Thu, 9 Jan 2020 19:27:22 +0000 (21:27 +0200)]
mlxsw: spectrum: Only require minimum firmware version

Currently, the driver ensures that the firmware version found on the
device matches the branch of the required version.

Remove this limitation so that the driver will accept the required
version or a newer version, from any branch.

This will allow us to reduce the frequency in which we need to update
the required version. New firmware versions that include necessary bug
fixes will be able to work with the driver, even if they are not from
the required branch.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agomlxsw: spectrum: Update firmware version to xx.2000.2714
Ido Schimmel [Thu, 9 Jan 2020 19:27:21 +0000 (21:27 +0200)]
mlxsw: spectrum: Update firmware version to xx.2000.2714

The version adds support for 2x50 Gb/s port split option on SN3800
systems.

Signed-off-by: Ido Schimmel <idosch@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge git://git.kernel.org/pub/scm/linux/kernel/git/netdev/net
David S. Miller [Thu, 9 Jan 2020 20:10:26 +0000 (12:10 -0800)]
Merge git://git./linux/kernel/git/netdev/net

The ungrafting from PRIO bug fixes in net, when merged into net-next,
merge cleanly but create a build failure.  The resolution used here is
from Petr Machata.

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agoMerge branch 'sfc-more-code-refactoring'
David S. Miller [Thu, 9 Jan 2020 18:58:35 +0000 (10:58 -0800)]
Merge branch 'sfc-more-code-refactoring'

Alex Maftei says:

====================
sfc: more code refactoring

Splitting more of the driver code into different files, which will
later be used in another driver for a new product.

This is a continuation to my previous patch series.
There will be another series and a stand-alone patch as well
after this.

This series in particular covers MCDI (management controller
driver interface) code.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: move MCDI logging device attribute
Alex Maftei (amaftei) [Thu, 9 Jan 2020 15:45:45 +0000 (15:45 +0000)]
sfc: move MCDI logging device attribute

A few bits were extracted from other functions.

Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
4 years agosfc: conditioned some functionality
Alex Maftei (amaftei) [Thu, 9 Jan 2020 15:45:29 +0000 (15:45 +0000)]
sfc: conditioned some functionality

Before calling certain function pointers, check that they are non-NULL.

Signed-off-by: Alexandru-Mihai Maftei <amaftei@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>