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There is a spelling mistake in a dev_err message. Fix it.
Signed-off-by: Colin Ian King <colin.i.king@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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When the ipoib send_queue_size is increased from the default the following
panic happens:
RIP: 0010:hfi1_ipoib_drain_tx_ring+0x45/0xf0 [hfi1]
Code: 31 e4 eb 0f 8b 85 c8 02 00 00 41 83 c4 01 44 39 e0 76 60 8b 8d cc 02 00 00 44 89 e3 be 01 00 00 00 d3 e3 48 03 9d c0 02 00 00 <c7> 83 18 01 00 00 00 00 00 00 48 8b bb 30 01 00 00 e8 25 af a7 e0
RSP: 0018:ffffc9000798f4a0 EFLAGS: 00010286
RAX: 0000000000008000 RBX: ffffc9000aa0f000 RCX: 000000000000000f
RDX: 0000000000000000 RSI: 0000000000000001 RDI: 0000000000000000
RBP: ffff88810ff08000 R08: ffff88889476d900 R09: 0000000000000101
R10: 0000000000000000 R11: ffffc90006590ff8 R12: 0000000000000200
R13: ffffc9000798fba8 R14: 0000000000000000 R15: 0000000000000001
FS: 00007fd0f79cc3c0(0000) GS:ffff88885fb00000(0000) knlGS:0000000000000000
CS: 0010 DS: 0000 ES: 0000 CR0: 0000000080050033
CR2: ffffc9000aa0f118 CR3: 0000000889c84001 CR4: 00000000001706e0
Call Trace:
<TASK>
hfi1_ipoib_napi_tx_disable+0x45/0x60 [hfi1]
hfi1_ipoib_dev_stop+0x18/0x80 [hfi1]
ipoib_ib_dev_stop+0x1d/0x40 [ib_ipoib]
ipoib_stop+0x48/0xc0 [ib_ipoib]
__dev_close_many+0x9e/0x110
__dev_change_flags+0xd9/0x210
dev_change_flags+0x21/0x60
do_setlink+0x31c/0x10f0
? __nla_validate_parse+0x12d/0x1a0
? __nla_parse+0x21/0x30
? inet6_validate_link_af+0x5e/0xf0
? cpumask_next+0x1f/0x20
? __snmp6_fill_stats64.isra.53+0xbb/0x140
? __nla_validate_parse+0x47/0x1a0
__rtnl_newlink+0x530/0x910
? pskb_expand_head+0x73/0x300
? __kmalloc_node_track_caller+0x109/0x280
? __nla_put+0xc/0x20
? cpumask_next_and+0x20/0x30
? update_sd_lb_stats.constprop.144+0xd3/0x820
? _raw_spin_unlock_irqrestore+0x25/0x37
? __wake_up_common_lock+0x87/0xc0
? kmem_cache_alloc_trace+0x3d/0x3d0
rtnl_newlink+0x43/0x60
The issue happens when the shift that should have been a function of the
txq item size mistakenly used the ring size.
Fix by using the item size.
Cc: stable@vger.kernel.org
Fixes: d47dfc2b00e6 ("IB/hfi1: Remove cache and embed txreq in ring")
Link: https://lore.kernel.org/r/1642287756-182313-2-git-send-email-mike.marciniszyn@cornelisnetworks.com
Reviewed-by: Dennis Dalessandro <dennis.dalessandro@cornelisnetworks.com>
Signed-off-by: Mike Marciniszyn <mike.marciniszyn@cornelisnetworks.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Luiz Angelo Daros de Luca says:
====================
net: dsa: realtek: MDIO interface and RTL8367S,RTL8367RB-VB
The old realtek-smi driver was linking subdrivers into a single
realtek-smi.ko After this series, each subdriver will be an independent
module required by either realtek-smi (platform driver) or the new
realtek-mdio (mdio driver). Both interface drivers (SMI or MDIO) are
independent, and they might even work side-by-side, although it will be
difficult to find such device. The subdriver can be individually
selected but only at buildtime, saving some storage space for custom
embedded systems.
Existing realtek-smi devices continue to work untouched during the
tests. The realtek-smi was moved into a realtek subdirectory, but it
normally does not break things.
I couldn't identify a fixed relation between port numbers (0..9) and
external interfaces (0..2), and I'm not sure if it is fixed for each
chip version or a device configuration. Until there is more info about
it, there is a new port property "realtek,ext-int" that can inform the
external interface.
The rtl8365mb might now handle multiple CPU ports and extint ports not
used as CPU ports. RTL8367S has an SGMII external interface, but my test
device (TP-Link Archer C5v4) uses only the second RGMII interface. We
need a test device with more external ports to test these features.
The driver still cannot handle SGMII ports.
RTL8367RB-VB support was added using information from Frank Wunderlich
<frank-w@public-files.de> but I didn't test it myself.
The rtl8365mb was tested with a MDIO-connected RTL8367S (TP-Link Acher
C5v4) and a SMI-connected RTL8365MB-VC switch (Asus RT-AC88U)
The rtl8366rb subdriver was not tested with this patch series, but it
was only slightly touched. It would be nice to test it, especially in an
MDIO-connected switch.
Best,
Luiz
Changelog:
v1-v2)
- formatting fixes
- dropped the rtl8365mb->rtl8367c rename
- other suggestions
v2-v3)
* realtek-mdio.c:
- cleanup realtek-mdio.c (BUG_ON, comments and includes)
- check devm_regmap_init return code
- removed realtek,rtl8366s string from realtek-mdio
* realtek-smi.c:
- removed void* type cast
* rtl8365mb.c:
- using macros to identify EXT interfaces
- rename some extra extport->extint cases
- allow extint as non cpu (not tested)
- allow multple cpu ports (not tested)
- dropped cpu info from struct rtl8365mb
* dropped dt-bindings changes (dealing outside this series)
* formatting issues fixed
v3-v4)
* fix cover message numbering 0/13 -> 0/11
* use static for realtek_mdio_read_reg
- Reported-by: kernel test robot <lkp@intel.com>
* use dsa_switch_for_each_cpu_port
* mention realtek_smi_{variant,ops} to realtek_{variant,ops}
in commit message
v5) sent again v4 branch. Sorry
v4-v6)
- added support for RTL8367RB-VB
- cleanup mdio_{read,write}, removing misterious START_OP, checking and
returning errors
- renamed priv->phy_id to priv->mdio_addr
- duplicated priv->ds_ops into ds_ops_{smi,mdio}. ds_ops_smi must not
set
phy_read or else both dsa and this driver might free slave_mii.
Dropped
401fd75c92f37
- Map port to extint using code instead of device-tree property. Added
comment
about port number, port description and external interfaces. Dropped
'realtek,ext-int' device-tree property
- Redacted the non-cpu ext port commit message, not highlighting the
possibility of using multiple CPU ports as it was just a byproduct.
- In a possible case of multiple cpu ports, use the first one as the
trap port.
Dropped 'realtek,trap-port' device-tree property
- Some formatting fixes
- BUG: rtl8365mb_phy_mode_supported was still checking for a cpu port
and not
an external interface
- BUG: fix trapdoor masking for port>7. Got a compiler error with a
bigger
constant value
- WARN: completed kdoc for rtl8366rb_drop_untagged()
- WARN: removed marks from incomplete kdoc
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Trap door number is a 4-bit number divided in two regions (3 and 1-bit).
Both values were not masked properly. This bug does not affect supported
devices as they use up to port 7 (ext2). It would only be a problem if
the driver becomes compatible with 10-port switches like RTL8370MB and
RTL8310SR.
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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External interfaces can be configured, even if they are not CPU ports.
The first CPU port will also be the trap port (for receiving trapped
frames from the switch).
The CPU information was dropped from chip data as it was not used
outside setup. The only other place it was used is when it wrongly
checks for CPU port when it should check for extint.
The supported modes check now uses port type and not port usage.
As a byproduct, more than one CPU can be configured. although this
might not work well with DSA setups. Also, this driver is still only
blindly forwarding all traffic to CPU port(s).
This change was not tested in a device with multiple active external
interfaces ports.
realtek_priv->cpu_port is now only used by rtl8366rb.c
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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RTL8367RB-VB is a 5+2 port 10/100/1000M Ethernet switch.
It is similar to RTL8367S but in this version, both
external interfaces are RGMII.
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Realtek's RTL8367S, a 5+2 port 10/100/1000M Ethernet switch.
It shares the same driver family (RTL8367C) with other models
as the RTL8365MB-VC. Its compatible string is "realtek,rtl8367s".
It was tested only with MDIO interface (realtek-mdio), although it might
work out-of-the-box with SMI interface (using realtek-smi).
This patch was based on an unpublished patch from Alvin Šipraga
<alsi@bang-olufsen.dk>.
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Instead of a fixed CPU port, assume that DSA is correct.
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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"extport" 0, 1, 2 was used to reference external ports id (ext0, ext1,
ext2). Meanwhile, port 0..9 is used as switch ports, including external
ports. "extport" was renamed to extint to make it clear it does not mean
the port number but the external interface number id.
The macros that map extint numbers to registers addresses now use inline
ifs instead of binary arithmetic.
Realtek uses in docs and drivers EXT_PORT0 (GMAC1) and EXT_PORT1
(GMAC2), with EXT_PORT0 being converted to ext_id == 1 and so on. It
might introduce some confusing while reading datasheets but it will not
be exposed to users.
"extint" was hardcoded to 1. However, some chips have multiple external
interfaces. It's not right to assume the CPU port uses extint 1 nor that
all extint are CPU ports. Now it came from a map between port number and
external interface id number.
This patch still does not allow multiple CPU ports nor extint as a non
CPU port.
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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This driver is a mdio_driver instead of a platform driver (like
realtek-smi).
ds_ops was duplicated for smi and mdio usage as mdio interfaces uses
phy_{read,write} in ds_ops and the presence of phy_read is incompatible
with external slave_mii_bus allocation.
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Preparing for multiple interfaces support, the drivers
must be independent of realtek-smi.
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Remove the only two direct calls from subdrivers to realtek-smi.
Now they are called from realtek_priv. Subdrivers can now be
linked independently from realtek-smi.
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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In preparation to adding other interfaces, the private data structure
was renamed to priv. Also, realtek_smi_variant and realtek_smi_ops
were renamed to realtek_variant and realtek_ops as those structs are
not SMI specific.
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Tested-by: Arınç ÜNAL <arinc.unal@arinc9.com>
Reviewed-by: Alvin Šipraga <alsi@bang-olufsen.dk>
Reviewed-by: Linus Walleij <linus.walleij@linaro.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Removed kdoc mark for incomplete struct description.
Added a return description for rtl8366rb_drop_untagged.
Signed-off-by: Luiz Angelo Daros de Luca <luizluca@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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We can't do instant reconnect, not to DDoS server, but we should stop and
failover earlier, so there is less service interruption.
To avoid deadlock, as error_recovery is called from different callback
like rdma event or hb error handler, add a new err recovery_work.
Link: https://lore.kernel.org/r/20220114154753.983568-6-haris.iqbal@ionos.com
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Reviewed-by: Aleksei Marov <aleksei.marov@ionos.com>
Reviewed-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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The skip_list is used for both MIN_INFLIGHT and MIN_LATENCY.
Link: https://lore.kernel.org/r/20220114154753.983568-5-haris.iqbal@ionos.com
Signed-off-by: Jack Wang <jinpu.wang@ionos.com>
Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Fix:
CHECK:OPEN_ENDED_LINE: Lines should not end with a '('
Link: https://lore.kernel.org/r/20220114154753.983568-4-haris.iqbal@ionos.com
Signed-off-by: Gioh Kim <gi-oh.kim@ionos.com>
Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Duoming Zhou says:
====================
ax25: fix NPD and UAF bugs when detaching ax25 device
There are NPD and UAF bugs when detaching ax25 device, we
use lock and refcount to mitigate these bugs.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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If we dereference ax25_dev after we call kfree(ax25_dev) in
ax25_dev_device_down(), it will lead to concurrency UAF bugs.
There are eight syscall functions suffer from UAF bugs, include
ax25_bind(), ax25_release(), ax25_connect(), ax25_ioctl(),
ax25_getname(), ax25_sendmsg(), ax25_getsockopt() and
ax25_info_show().
One of the concurrency UAF can be shown as below:
(USE) | (FREE)
| ax25_device_event
| ax25_dev_device_down
ax25_bind | ...
... | kfree(ax25_dev)
ax25_fillin_cb() | ...
ax25_fillin_cb_from_dev() |
... |
The root cause of UAF bugs is that kfree(ax25_dev) in
ax25_dev_device_down() is not protected by any locks.
When ax25_dev, which there are still pointers point to,
is released, the concurrency UAF bug will happen.
This patch introduces refcount into ax25_dev in order to
guarantee that there are no pointers point to it when ax25_dev
is released.
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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The previous commit 1ade48d0c27d ("ax25: NPD bug when detaching
AX25 device") introduce lock_sock() into ax25_kill_by_device to
prevent NPD bug. But the concurrency NPD or UAF bug will occur,
when lock_sock() or release_sock() dereferences the ax25_cb->sock.
The NULL pointer dereference bug can be shown as below:
ax25_kill_by_device() | ax25_release()
| ax25_destroy_socket()
| ax25_cb_del()
... | ...
| ax25->sk=NULL;
lock_sock(s->sk); //(1) |
s->ax25_dev = NULL; | ...
release_sock(s->sk); //(2) |
... |
The root cause is that the sock is set to null before dereference
site (1) or (2). Therefore, this patch extracts the ax25_cb->sock
in advance, and uses ax25_list_lock to protect it, which can synchronize
with ax25_cb_del() and ensure the value of sock is not null before
dereference sites.
The concurrency UAF bug can be shown as below:
ax25_kill_by_device() | ax25_release()
| ax25_destroy_socket()
... | ...
| sock_put(sk); //FREE
lock_sock(s->sk); //(1) |
s->ax25_dev = NULL; | ...
release_sock(s->sk); //(2) |
... |
The root cause is that the sock is released before dereference
site (1) or (2). Therefore, this patch uses sock_hold() to increase
the refcount of sock and uses ax25_list_lock to protect it, which
can synchronize with ax25_cb_del() in ax25_destroy_socket() and
ensure the sock wil not be released before dereference sites.
Signed-off-by: Duoming Zhou <duoming@zju.edu.cn>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Fix:
CHECK:BRACES: Blank lines aren't necessary after an open brace '{'
Link: https://lore.kernel.org/r/20220114154753.983568-2-haris.iqbal@ionos.com
Signed-off-by: Gioh Kim <gi-oh.kim@ionos.com>
Signed-off-by: Md Haris Iqbal <haris.iqbal@ionos.com>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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ethtool rx-buf-len is for setting receive buffer size,
support setting it via ethtool -G parameter and getting
it via ethtool -g parameter.
Signed-off-by: Subbaraya Sundeep <sbhatta@marvell.com>
Signed-off-by: Sunil Goutham <sgoutham@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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To prepare for usage of the v4l2_fwnode_bus_* data structures to
describe bus configuration in the subdev .get_mbus_config() operation,
rename the structures with a v4l2_mbus_config_ prefix instead of
v4l2_fwnode_bus_, and move them to v4l2_mediabus.h.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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This reverts commit 54784ff24971ed5bd3f1056edce998148709d0a7.
This patch changes the pin names from "MIO%d" to "MIO-%d", but all dts
in arch/arm64/boot/dts/xilinx still use the old name. As a result my
ZCU104 has no output on serial terminal and is not reachable over
network.
Signed-off-by: Gerhard Engleder <gerhard@engleder-embedded.com>
Signed-off-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
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The .set_mbus_config() operation is deprecated, and nothing in the
kernel uses it. Drop it.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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The subdev .set_mbus_config() operation is deprecated. No code in the
kernel calls it, so drop its implementation from the ov6650 driver.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Acked-by: Janusz Krzysztofik <jmkrzyszt@gmail.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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The subdev .set_mbus_config() operation is deprecated and will be
dropped. Drop its usage from the pxa_camera driver, querying the sensor
bus configuration instead of setting it. Only the ov6650 driver supports
the operation, any platform that experiences issues with this change
should update the ov6650 configuration to match what pxa_camera
supports.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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The clock-lanes property is not programmable by the hardware,
and as such it should not be exposed in the dt-binding.
Signed-off-by: Robert Foss <robert.foss@linaro.org>
Reviewed-by: Bjorn Andersson <bjorn.andersson@linaro.org>
Reviewed-by: Rob Herring <robh@kernel.org>
Signed-off-by: Sakari Ailus <sakari.ailus@linux.intel.com>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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As stated in [1], dma_set_mask() with a 64-bit mask never fails if
dev->dma_mask is non-NULL.
So, if it fails, the 32 bits case will also fail for the same reason.
Simplify code and remove some dead code accordingly.
[1]: https://lore.kernel.org/r/YL3vSPK5DXTNvgdx@infradead.org
Link: https://lore.kernel.org/r/10c29cb45d14fb8ed89cf1308c4a9a7d445c52eb.1641717275.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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As stated in [1], dma_set_mask() with a 64-bit mask never fails if
dev->dma_mask is non-NULL.
So, if it fails, the 32 bits case will also fail for the same reason.
Simplify code and remove some dead code accordingly.
[1]: https://lore.kernel.org/r/YL3vSPK5DXTNvgdx@infradead.org
Link: https://lore.kernel.org/r/03c66fe5c2a81dbb29349ebf9af631e5ea216ec4.1642232675.git.christophe.jaillet@wanadoo.fr
Signed-off-by: Christophe JAILLET <christophe.jaillet@wanadoo.fr>
Signed-off-by: Jason Gunthorpe <jgg@nvidia.com>
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Eric Dumazet says:
====================
SUNRPC: add some netns refcount trackers
Effort started in linux-5.17
Our goal is to replace get_net()/put_net() pairs with
get_net_track()/put_net_track() to get instant notifications
of imbalance bugs in the future.
Patches were split from a bigger series sent one month ago.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Signed-off-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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struct svc_xprt holds a long lived reference to a netns,
it is worth tracking it.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Acked-by: Chuck Lever <chuck.lever@oracle.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Jakub Kicinski says:
====================
ethtool: add header/data split indication
TCP ZC Rx requires data to be placed neatly into pages, separate
from the networking headers. This is not supported by most devices
so to make deployment easy this set adds a way for the driver to
report support for this feature thru ethtool.
The larger scope of configuring splitting headers and data, or DMA
scatter seems dauntingly broad, so this set focuses specifically
on the question "is this device usable with TCP ZC Rx?".
The aim is to avoid a litany of conditions on HW platforms, features,
and firmware versions in orchestration systems when the drivers can
easily tell their SG config.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Aggregation rings imply header-data split.
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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For applications running on a mix of platforms it's useful
to have a clear indication whether host's NIC supports the
geometry requirements of TCP zero-copy. TCP zero-copy Rx
requires data to be neatly placed into memory pages.
Most NICs can't do that.
This patch is adding GET support only, since the NICs
I work with either always have the feature enabled or
enable it whenever MTU is set to jumbo. In other words
I don't need SET. But adding set should be trivial.
(The only note on SET is that we will likely want
the setting to be "sticky" and use 0 / `unknown`
to reset it back to driver default.)
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Robert Hancock says:
====================
Allow disabling KSZ switch refclock
The reference clock output from the KSZ9477 and related Microchip
switch devices is not required on all board designs. Add a device
tree property to disable it for power and EMI reasons.
Changes since v3:
-rework some code for simplicity
Changes since v2:
-check for conflicting options in DT, added note in bindings doc
Changes since v1:
-added Acked-by on patch 1, rebase to net-next
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
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Add a new microchip,synclko-disable property which can be specified
to disable the reference clock output from the device if not required
by the board design.
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Document the new microchip,synclko-disable property which can be
specified to disable the reference clock output from the device if not
required by the board design.
Signed-off-by: Robert Hancock <robert.hancock@calian.com>
Acked-by: Rob Herring <robh@kernel.org>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
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Vladimir points out that since we removed mii_lpa_to_linkmode_lpa_sgmii(),
mii_lpa_mod_linkmode_lpa_sgmii() is also no longer called.
Suggested-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
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After adding device_link between the iommu consumer and smi-larb,
the pm_runtime_get(_sync) of smi-larb and smi-common will be called
automatically. we can get rid of mtk_smi_larb_get/put.
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Evan Green <evgreen@chromium.org>
Acked-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
Acked-by: Matthias Brugger <matthias.bgg@gmail.com>
Reviewed-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de> # BPI-R2/MT7623
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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MediaTek IOMMU has already added the device_link between the consumer
and smi-larb device. If the vcodec devices call the pm_runtime_get_sync,
the smi-larb's pm_runtime_get_sync also be called automatically.
CC: Irui Wang <irui.wang@mediatek.com>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Evan Green <evgreen@chromium.org>
Acked-by: Tiffany Lin <tiffany.lin@mediatek.com>
Reviewed-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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MediaTek IOMMU has already added the device_link between the consumer
and smi-larb device. If the drm device calls the pm_runtime_get_sync,
the smi-larb's pm_runtime_get_sync also be called automatically.
CC: CK Hu <ck.hu@mediatek.com>
CC: Philipp Zabel <p.zabel@pengutronix.de>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Evan Green <evgreen@chromium.org>
Acked-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Reviewed-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de> # BPI-R2/MT7623
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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Prepare for smi cleaning up "mediatek,larb".
Display use the dispsys device to call pm_rumtime_get_sync before.
This patch add pm_runtime_xx with ovl and rdma device whose nodes has
"iommus" property, then display could help pm_runtime_get for smi via
ovl or rdma device.
(Yong: Use pm_runtime_resume_and_get instead of pm_runtime_get_sync)
CC: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Yongqiang Niu <yongqiang.niu@mediatek.com>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Acked-by: Chun-Kuang Hu <chunkuang.hu@kernel.org>
Tested-by: Frank Wunderlich <frank-w@public-files.de> # BPI-R2/MT7623
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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MediaTek IOMMU has already added the device_link between the consumer
and smi-larb device. If the mdp device calls the pm_runtime_get_sync,
the smi-larb's pm_runtime_get_sync also be called automatically.
CC: Minghsiu Tsai <minghsiu.tsai@mediatek.com>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Evan Green <evgreen@chromium.org>
Reviewed-by: Houlong Wei <houlong.wei@mediatek.com>
Reviewed-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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MediaTek IOMMU has already added device_link between the consumer
and smi-larb device. If the jpg device calls the pm_runtime_get_sync,
the smi-larb's pm_runtime_get_sync also be called automatically.
After removing the larb_get operations, then mtk_jpeg_clk_init is
also unnecessary. Remove it too.
CC: Xia Jiang <xia.jiang@mediatek.com>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Reviewed-by: Evan Green <evgreen@chromium.org>
Acked-by: Rick Chang <rick.chang@mediatek.com>
Reviewed-by: Dafna Hirschfeld <dafna.hirschfeld@collabora.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de> # BPI-R2/MT7623
Acked-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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MediaTek IOMMU-SMI diagram is like below. all the consumer connect with
smi-larb, then connect with smi-common.
M4U
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smi-common
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-------------
| | ...
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larb1 larb2
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vdec venc
When the consumer works, it should enable the smi-larb's power which
also need enable the smi-common's power firstly.
Thus, First of all, use the device link connect the consumer and the
smi-larbs. then add device link between the smi-larb and smi-common.
This patch adds device_link between the consumer and the larbs.
When device_link_add, I add the flag DL_FLAG_STATELESS to avoid calling
pm_runtime_xx to keep the original status of clocks. It can avoid two
issues:
1) Display HW show fastlogo abnormally reported in [1]. At the beggining,
all the clocks are enabled before entering kernel, but the clocks for
display HW(always in larb0) will be gated after clk_enable and clk_disable
called from device_link_add(->pm_runtime_resume) and rpm_idle. The clock
operation happened before display driver probe. At that time, the display
HW will be abnormal.
2) A deadlock issue reported in [2]. Use DL_FLAG_STATELESS to skip
pm_runtime_xx to avoid the deadlock.
Corresponding, DL_FLAG_AUTOREMOVE_CONSUMER can't be added, then
device_link_removed should be added explicitly.
Meanwhile, Currently we don't have a device connect with 2 larbs at the
same time. Disallow this case, print the error log.
[1] https://lore.kernel.org/linux-mediatek/1564213888.22908.4.camel@mhfsdcap03/
[2] https://lore.kernel.org/patchwork/patch/1086569/
Suggested-by: Tomasz Figa <tfiga@chromium.org>
Signed-off-by: Yong Wu <yong.wu@mediatek.com>
Tested-by: Frank Wunderlich <frank-w@public-files.de> # BPI-R2/MT7623
Acked-by: Joerg Roedel <jroedel@suse.de>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@collabora.com>
Signed-off-by: Hans Verkuil <hverkuil-cisco@xs4all.nl>
Signed-off-by: Mauro Carvalho Chehab <mchehab@kernel.org>
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Colin Ian King
Mike Marciniszyn
David S. Miller
Luiz Angelo Daros de Luca
Jack Wang
Gioh Kim
Duoming Zhou
Subbaraya Sundeep
Laurent Pinchart
Gerhard Engleder
Robert Foss
Christophe JAILLET
Eric Dumazet
Jakub Kicinski
Robert Hancock
Yong Wu
Yongqiang Niu