Jonathan Lemon [Wed, 6 Jan 2021 22:18:38 +0000 (14:18 -0800)]
net: group skb_shinfo zerocopy related bits together.
In preparation for expanded zerocopy (TX and RX), move
the zerocopy related bits out of tx_flags into their own
flag word.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jonathan Lemon [Wed, 6 Jan 2021 22:18:37 +0000 (14:18 -0800)]
skbuff: rename sock_zerocopy_* to msg_zerocopy_*
At Willem's suggestion, rename the sock_zerocopy_* functions
so that they match the MSG_ZEROCOPY flag, which makes it clear
they are specific to this zerocopy implementation.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jonathan Lemon [Wed, 6 Jan 2021 22:18:36 +0000 (14:18 -0800)]
skbuff: Call skb_zcopy_clear() before unref'ing fragments
RX zerocopy fragment pages which are not allocated from the
system page pool require special handling. Give the callback
in skb_zcopy_clear() a chance to process them first.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jonathan Lemon [Wed, 6 Jan 2021 22:18:35 +0000 (14:18 -0800)]
skbuff: Call sock_zerocopy_put_abort from skb_zcopy_put_abort
The sock_zerocopy_put_abort function contains logic which is
specific to the current zerocopy implementation. Add a wrapper
which checks the callback and dispatches apppropriately.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jonathan Lemon [Wed, 6 Jan 2021 22:18:34 +0000 (14:18 -0800)]
skbuff: Add skb parameter to the ubuf zerocopy callback
Add an optional skb parameter to the zerocopy callback parameter,
which is passed down from skb_zcopy_clear(). This gives access
to the original skb, which is needed for upcoming RX zero-copy
error handling.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jonathan Lemon [Wed, 6 Jan 2021 22:18:33 +0000 (14:18 -0800)]
skbuff: replace sock_zerocopy_get with skb_zcopy_get
Rename the get routines for consistency.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jonathan Lemon [Wed, 6 Jan 2021 22:18:32 +0000 (14:18 -0800)]
skbuff: replace sock_zerocopy_put() with skb_zcopy_put()
Replace sock_zerocopy_put with the generic skb_zcopy_put()
function. Pass 'true' as the success argument, as this
is identical to no change.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jonathan Lemon [Wed, 6 Jan 2021 22:18:31 +0000 (14:18 -0800)]
skbuff: Push status and refcounts into sock_zerocopy_callback
Before this change, the caller of sock_zerocopy_callback would
need to save the zerocopy status, decrement and check the refcount,
and then call the callback function - the callback was only invoked
when the refcount reached zero.
Now, the caller just passes the status into the callback function,
which saves the status and handles its own refcounts.
This makes the behavior of the sock_zerocopy_callback identical
to the tpacket and vhost callbacks.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jonathan Lemon [Wed, 6 Jan 2021 22:18:30 +0000 (14:18 -0800)]
skbuff: simplify sock_zerocopy_put
All 'struct ubuf_info' users should have a callback defined
as of commit
0a4a060bb204 ("sock: fix zerocopy_success regression
with msg_zerocopy").
Remove the dead code path to consume_skb(), which makes
assumptions about how the structure was allocated.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jonathan Lemon [Wed, 6 Jan 2021 22:18:29 +0000 (14:18 -0800)]
skbuff: remove unused skb_zcopy_abort function
skb_zcopy_abort() has no in-tree consumers, remove it.
Signed-off-by: Jonathan Lemon <jonathan.lemon@gmail.com>
Acked-by: Willem de Bruijn <willemb@google.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 7 Jan 2021 23:58:35 +0000 (15:58 -0800)]
Merge branch 'dwmac-meson8b-picosecond-precision-rx-delay-support'
Martin Blumenstingl says:
====================
dwmac-meson8b: picosecond precision RX delay support
with the help of Jianxin Pan (many thanks!) the meaning of the "new"
PRG_ETH1[19:16] register bits on Amlogic Meson G12A, G12B and SM1 SoCs
are finally known. These SoCs allow fine-tuning the RGMII RX delay in
200ps steps (contrary to what I have thought in the past [0] these are
not some "calibration" values).
The vendor u-boot has code to automatically detect the best RX/TX delay
settings. For now we keep it simple and add a device-tree property with
200ps precision to select the "right" RX delay for each board.
While here, deprecate the "amlogic,rx-delay-ns" property as it's not
used on any upstream .dts (yet). The driver is backwards compatible.
I have tested this on an X96 Air 4GB board (not upstream yet). Testing
with iperf3 gives 938 Mbits/sec in both directions (RX and TX). The
following network settings were used in the .dts (2ns TX delay
generated by the PHY, 800ps RX delay generated by the MAC as the PHY
only supports 0ns or 2ns RX delays):
&ext_mdio {
external_phy: ethernet-phy@0 {
/* Realtek RTL8211F (0x001cc916) */
reg = <0>;
eee-broken-1000t;
reset-assert-us = <10000>;
reset-deassert-us = <30000>;
reset-gpios = <&gpio GPIOZ_15 (GPIO_ACTIVE_LOW |
GPIO_OPEN_DRAIN)>;
interrupt-parent = <&gpio_intc>;
/* MAC_INTR on GPIOZ_14 */
interrupts = <26 IRQ_TYPE_LEVEL_LOW>;
};
};
ðmac {
status = "okay";
pinctrl-0 = <ð_pins>, <ð_rgmii_pins>;
pinctrl-names = "default";
phy-mode = "rgmii-txid";
phy-handle = <&external_phy>;
amlogic,rgmii-rx-delay-ps = <800>;
};
To use the same settings from vendor u-boot (which in my case has broken
Ethernet) the following commands can be used:
mw.l 0xff634540 0x1621
mw.l 0xff634544 0x30000
phyreg w 0x0 0x1040
phyreg w 0x1f 0xd08
phyreg w 0x11 0x9
phyreg w 0x15 0x11
phyreg w 0x1f 0x0
phyreg w 0x0 0x9200
Also I have tested this on a X96 Max board without any .dts changes
to confirm that other boards with the same IP block still work fine
with these changes.
Changes since v3 at [3].
- added Florian's Reviewed-by to patch 1 (thank you!)
- rebased on top of net-next
Changes since v2 at [2]:
- use the generic property name "rx-internal-delay-ps" as suggested by
Rob (thanks!). This affects patches #1 and #3. The biggest change is
is in patch #1 which is why I didn't add Florian's and Andrew's
Reviewed-by
- added Andrew's and Florian's Reviewed-by to patches 2, 3, 4, 5 (many
thanks to both!). I decided to do this despite renaming the property
to the generic name "rx-internal-delay-ps" as it only affects the
patch description and one line of code
- updated patch description of patch #3 to explain why there's not a
lot of validation when parsing the old device-tree property (in
nanosecond precision)
- dropped RFC status
Changes since v1 at [1]:
- updated patch 1 by making it more clear when the RX delay is applied.
Thanks to Andrew for the suggestion!
- added a fix to enabling the timing-adjustment clock only when really
needed. Found by Andrew - thanks!
- added testing not about X96 Max
- v1 did not go to the netdev mailing list, v2 fixes this
[0] https://lore.kernel.org/netdev/CAFBinCATt4Hi9rigj52nMf3oygyFbnopZcsakGL=KyWnsjY3JA@mail.gmail.com/
[1] https://patchwork.kernel.org/project/linux-amlogic/list/?series=384279&state=%2A&archive=both
[2] https://patchwork.kernel.org/project/linux-amlogic/list/?series=384491&state=%2A&archive=both
[3] https://patchwork.kernel.org/project/linux-amlogic/list/?series=406005&state=%2A&archive=both
====================
Link: https://lore.kernel.org/r/20210106134251.45264-1-martin.blumenstingl@googlemail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Martin Blumenstingl [Wed, 6 Jan 2021 13:42:51 +0000 (14:42 +0100)]
net: stmmac: dwmac-meson8b: add support for the RGMII RX delay on G12A
Amlogic Meson G12A (and newer: G12B, SM1) SoCs have a more advanced RX
delay logic. Instead of fine-tuning the delay in the nanoseconds range
it now allows tuning in 200 picosecond steps. This support comes with
new bits in the PRG_ETH1[19:16] register.
Add support for validating the RGMII RX delay as well as configuring the
register accordingly on these platforms.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Martin Blumenstingl [Wed, 6 Jan 2021 13:42:50 +0000 (14:42 +0100)]
net: stmmac: dwmac-meson8b: move RGMII delays into a separate function
Newer SoCs starting with the Amlogic Meson G12A have more a precise
RGMII RX delay configuration register. This means more complexity in the
code. Extract the existing RGMII delay configuration code into a
separate function to make it easier to read/understand even when adding
more logic in the future.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Martin Blumenstingl [Wed, 6 Jan 2021 13:42:49 +0000 (14:42 +0100)]
net: stmmac: dwmac-meson8b: use picoseconds for the RGMII RX delay
Amlogic Meson G12A, G12B and SM1 SoCs have a more advanced RGMII RX
delay register which allows picoseconds precision. Parse the new
"rx-internal-delay-ps" property or fall back to the value from the old
"amlogic,rx-delay-ns" property.
No upstream DTB uses the old "amlogic,rx-delay-ns" property (yet).
Only include minimalistic logic to fall back to the old property,
without any special validation (for example if the old and new
property are given at the same time).
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Martin Blumenstingl [Wed, 6 Jan 2021 13:42:48 +0000 (14:42 +0100)]
net: stmmac: dwmac-meson8b: fix enabling the timing-adjustment clock
The timing-adjustment clock only has to be enabled when a) there is a
2ns RX delay configured using device-tree and b) the phy-mode indicates
that the RX delay should be enabled.
Only enable the RX delay if both are true, instead of (by accident) also
enabling it when there's the 2ns RX delay configured but the phy-mode
incicates that the RX delay is not used.
Fixes: 9308c47640d515 ("net: stmmac: dwmac-meson8b: add support for the RX delay configuration")
Reported-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Martin Blumenstingl [Wed, 6 Jan 2021 13:42:47 +0000 (14:42 +0100)]
dt-bindings: net: dwmac-meson: use picoseconds for the RGMII RX delay
Amlogic Meson G12A, G12B and SM1 SoCs have a more advanced RGMII RX
delay register which allows picoseconds precision. Deprecate the old
"amlogic,rx-delay-ns" in favour of the generic "rx-internal-delay-ps"
property.
For older SoCs the only known supported values were 0ns and 2ns. The new
SoCs have support for RGMII RX delays between 0ps and 3000ps in 200ps
steps.
Don't carry over the description for the "rx-internal-delay-ps" property
and inherit that from ethernet-controller.yaml instead.
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 7 Jan 2021 23:42:09 +0000 (15:42 -0800)]
Merge branch 'reduce-coupling-between-dsa-and-broadcom-systemport-driver'
Vladimir Oltean says:
====================
Reduce coupling between DSA and Broadcom SYSTEMPORT driver
Upon a quick inspection, it seems that there is some code in the generic
DSA layer that is somehow specific to the Broadcom SYSTEMPORT driver.
The challenge there is that the hardware integration is very tight between
the switch and the DSA master interface. However this does not mean that
the drivers must also be as integrated as the hardware is. We can avoid
creating a DSA notifier just for the Broadcom SYSTEMPORT, and we can
move some Broadcom-specific queue mapping helpers outside of the common
include/net/dsa.h.
====================
Link: https://lore.kernel.org/r/20210107012403.1521114-1-olteanv@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Thu, 7 Jan 2021 01:24:03 +0000 (03:24 +0200)]
net: dsa: remove the DSA specific notifiers
This effectively reverts commit
60724d4bae14 ("net: dsa: Add support for
DSA specific notifiers"). The reason is that since commit
2f1e8ea726e9
("net: dsa: link interfaces with the DSA master to get rid of lockdep
warnings"), it appears that there is a generic way to achieve the same
purpose. The only user thus far, the Broadcom SYSTEMPORT driver, was
converted to use the generic notifiers.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Thu, 7 Jan 2021 01:24:02 +0000 (03:24 +0200)]
net: systemport: use standard netdevice notifier to detect DSA presence
The SYSTEMPORT driver maps each port of the embedded Broadcom DSA switch
port to a certain queue of the master Ethernet controller. For that it
currently uses a dedicated notifier infrastructure which was added in
commit
60724d4bae14 ("net: dsa: Add support for DSA specific notifiers").
However, since commit
2f1e8ea726e9 ("net: dsa: link interfaces with the
DSA master to get rid of lockdep warnings"), DSA is actually an upper of
the Broadcom SYSTEMPORT as far as the netdevice adjacency lists are
concerned. So naturally, the plain NETDEV_CHANGEUPPER net device notifiers
are emitted. It looks like there is enough API exposed by DSA to the
outside world already to make the call_dsa_notifiers API redundant. So
let's convert its only user to plain netdev notifiers.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Thu, 7 Jan 2021 01:24:01 +0000 (03:24 +0200)]
net: dsa: export dsa_slave_dev_check
Using the NETDEV_CHANGEUPPER notifications, drivers can be aware when
they are enslaved to e.g. a bridge by calling netif_is_bridge_master().
Export this helper from DSA to get the equivalent functionality of
determining whether the upper interface of a CHANGEUPPER notifier is a
DSA switch interface or not.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Thu, 7 Jan 2021 01:24:00 +0000 (03:24 +0200)]
net: dsa: move the Broadcom tag information in a separate header file
It is a bit strange to see something as specific as Broadcom SYSTEMPORT
bits in the main DSA include file. Move these away into a separate
header, and have the tagger and the SYSTEMPORT driver include them.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 7 Jan 2021 23:34:48 +0000 (15:34 -0800)]
Merge branch 'offload-software-learnt-bridge-addresses-to-dsa'
Vladimir Oltean says:
====================
Offload software learnt bridge addresses to DSA
This series tries to make DSA behave a bit more sanely when bridged with
"foreign" (non-DSA) interfaces and source address learning is not
supported on the hardware CPU port (which would make things work more
seamlessly without software intervention). When a station A connected to
a DSA switch port needs to talk to another station B connected to a
non-DSA port through the Linux bridge, DSA must explicitly add a route
for station B towards its CPU port.
Initial RFC was posted here:
https://patchwork.ozlabs.org/project/netdev/cover/
20201108131953.
2462644-1-olteanv@gmail.com/
v2 was posted here:
https://patchwork.kernel.org/project/netdevbpf/cover/
20201213024018.772586-1-vladimir.oltean@nxp.com/
v3 was posted here:
https://patchwork.kernel.org/project/netdevbpf/cover/
20201213140710.
1198050-1-vladimir.oltean@nxp.com/
This is a resend of the previous v3 with some added Reviewed-by tags.
====================
Link: https://lore.kernel.org/r/20210106095136.224739-1-olteanv@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 6 Jan 2021 09:51:36 +0000 (11:51 +0200)]
net: dsa: ocelot: request DSA to fix up lack of address learning on CPU port
Given the following setup:
ip link add br0 type bridge
ip link set eno0 master br0
ip link set swp0 master br0
ip link set swp1 master br0
ip link set swp2 master br0
ip link set swp3 master br0
Currently, packets received on a DSA slave interface (such as swp0)
which should be routed by the software bridge towards a non-switch port
(such as eno0) are also flooded towards the other switch ports (swp1,
swp2, swp3) because the destination is unknown to the hardware switch.
This patch addresses the issue by monitoring the addresses learnt by the
software bridge on eno0, and adding/deleting them as static FDB entries
on the CPU port accordingly.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 6 Jan 2021 09:51:35 +0000 (11:51 +0200)]
net: dsa: listen for SWITCHDEV_{FDB,DEL}_ADD_TO_DEVICE on foreign bridge neighbors
Some DSA switches (and not only) cannot learn source MAC addresses from
packets injected from the CPU. They only perform hardware address
learning from inbound traffic.
This can be problematic when we have a bridge spanning some DSA switch
ports and some non-DSA ports (which we'll call "foreign interfaces" from
DSA's perspective).
There are 2 classes of problems created by the lack of learning on
CPU-injected traffic:
- excessive flooding, due to the fact that DSA treats those addresses as
unknown
- the risk of stale routes, which can lead to temporary packet loss
To illustrate the second class, consider the following situation, which
is common in production equipment (wireless access points, where there
is a WLAN interface and an Ethernet switch, and these form a single
bridging domain).
AP 1:
+------------------------------------------------------------------------+
| br0 |
+------------------------------------------------------------------------+
+------------+ +------------+ +------------+ +------------+ +------------+
| swp0 | | swp1 | | swp2 | | swp3 | | wlan0 |
+------------+ +------------+ +------------+ +------------+ +------------+
| ^ ^
| | |
| | |
| Client A Client B
|
|
|
+------------+ +------------+ +------------+ +------------+ +------------+
| swp0 | | swp1 | | swp2 | | swp3 | | wlan0 |
+------------+ +------------+ +------------+ +------------+ +------------+
+------------------------------------------------------------------------+
| br0 |
+------------------------------------------------------------------------+
AP 2
- br0 of AP 1 will know that Clients A and B are reachable via wlan0
- the hardware fdb of a DSA switch driver today is not kept in sync with
the software entries on other bridge ports, so it will not know that
clients A and B are reachable via the CPU port UNLESS the hardware
switch itself performs SA learning from traffic injected from the CPU.
Nonetheless, a substantial number of switches don't.
- the hardware fdb of the DSA switch on AP 2 may autonomously learn that
Client A and B are reachable through swp0. Therefore, the software br0
of AP 2 also may or may not learn this. In the example we're
illustrating, some Ethernet traffic has been going on, and br0 from AP
2 has indeed learnt that it can reach Client B through swp0.
One of the wireless clients, say Client B, disconnects from AP 1 and
roams to AP 2. The topology now looks like this:
AP 1:
+------------------------------------------------------------------------+
| br0 |
+------------------------------------------------------------------------+
+------------+ +------------+ +------------+ +------------+ +------------+
| swp0 | | swp1 | | swp2 | | swp3 | | wlan0 |
+------------+ +------------+ +------------+ +------------+ +------------+
| ^
| |
| Client A
|
|
| Client B
| |
| v
+------------+ +------------+ +------------+ +------------+ +------------+
| swp0 | | swp1 | | swp2 | | swp3 | | wlan0 |
+------------+ +------------+ +------------+ +------------+ +------------+
+------------------------------------------------------------------------+
| br0 |
+------------------------------------------------------------------------+
AP 2
- br0 of AP 1 still knows that Client A is reachable via wlan0 (no change)
- br0 of AP 1 will (possibly) know that Client B has left wlan0. There
are cases where it might never find out though. Either way, DSA today
does not process that notification in any way.
- the hardware FDB of the DSA switch on AP 1 may learn autonomously that
Client B can be reached via swp0, if it receives any packet with
Client 1's source MAC address over Ethernet.
- the hardware FDB of the DSA switch on AP 2 still thinks that Client B
can be reached via swp0. It does not know that it has roamed to wlan0,
because it doesn't perform SA learning from the CPU port.
Now Client A contacts Client B.
AP 1 routes the packet fine towards swp0 and delivers it on the Ethernet
segment.
AP 2 sees a frame on swp0 and its fdb says that the destination is swp0.
Hairpinning is disabled => drop.
This problem comes from the fact that these switches have a 'blind spot'
for addresses coming from software bridging. The generic solution is not
to assume that hardware learning can be enabled somehow, but to listen
to more bridge learning events. It turns out that the bridge driver does
learn in software from all inbound frames, in __br_handle_local_finish.
A proper SWITCHDEV_FDB_ADD_TO_DEVICE notification is emitted for the
addresses serviced by the bridge on 'foreign' interfaces. The software
bridge also does the right thing on migration, by notifying that the old
entry is deleted, so that does not need to be special-cased in DSA. When
it is deleted, we just need to delete our static FDB entry towards the
CPU too, and wait.
The problem is that DSA currently only cares about SWITCHDEV_FDB_ADD_TO_DEVICE
events received on its own interfaces, such as static FDB entries.
Luckily we can change that, and DSA can listen to all switchdev FDB
add/del events in the system and figure out if those events were emitted
by a bridge that spans at least one of DSA's own ports. In case that is
true, DSA will also offload that address towards its own CPU port, in
the eventuality that there might be bridge clients attached to the DSA
switch who want to talk to the station connected to the foreign
interface.
In terms of implementation, we need to keep the fdb_info->added_by_user
check for the case where the switchdev event was targeted directly at a
DSA switch port. But we don't need to look at that flag for snooped
events. So the check is currently too late, we need to move it earlier.
This also simplifies the code a bit, since we avoid uselessly allocating
and freeing switchdev_work.
We could probably do some improvements in the future. For example,
multi-bridge support is rudimentary at the moment. If there are two
bridges spanning a DSA switch's ports, and both of them need to service
the same MAC address, then what will happen is that the migration of one
of those stations will trigger the deletion of the FDB entry from the
CPU port while it is still used by other bridge. That could be improved
with reference counting but is left for another time.
This behavior needs to be enabled at driver level by setting
ds->assisted_learning_on_cpu_port = true. This is because we don't want
to inflict a potential performance penalty (accesses through
MDIO/I2C/SPI are expensive) to hardware that really doesn't need it
because address learning on the CPU port works there.
Reported-by: DENG Qingfang <dqfext@gmail.com>
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 6 Jan 2021 09:51:34 +0000 (11:51 +0200)]
net: dsa: exit early in dsa_slave_switchdev_event if we can't program the FDB
Right now, the following would happen for a switch driver that does not
implement .port_fdb_add or .port_fdb_del.
dsa_slave_switchdev_event returns NOTIFY_OK and schedules:
-> dsa_slave_switchdev_event_work
-> dsa_port_fdb_add
-> dsa_port_notify(DSA_NOTIFIER_FDB_ADD)
-> dsa_switch_fdb_add
-> if (!ds->ops->port_fdb_add) return -EOPNOTSUPP;
-> an error is printed with dev_dbg, and
dsa_fdb_offload_notify(switchdev_work) is not called.
We can avoid scheduling the worker for nothing and say NOTIFY_DONE.
Because we don't call dsa_fdb_offload_notify, the static FDB entry will
remain just in the software bridge.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 6 Jan 2021 09:51:33 +0000 (11:51 +0200)]
net: dsa: move switchdev event implementation under the same switch/case statement
We'll need to start listening to SWITCHDEV_FDB_{ADD,DEL}_TO_DEVICE
events even for interfaces where dsa_slave_dev_check returns false, so
we need that check inside the switch-case statement for SWITCHDEV_FDB_*.
This movement also avoids a useless allocation / free of switchdev_work
on the untreated "default event" case.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 6 Jan 2021 09:51:32 +0000 (11:51 +0200)]
net: dsa: don't use switchdev_notifier_fdb_info in dsa_switchdev_event_work
Currently DSA doesn't add FDB entries on the CPU port, because it only
does so through switchdev, which is associated with a net_device, and
there are none of those for the CPU port.
But actually FDB addresses on the CPU port have some use cases of their
own, if the switchdev operations are initiated from within the DSA
layer. There is just one problem with the existing code: it passes a
structure in dsa_switchdev_event_work which was retrieved directly from
switchdev, so it contains a net_device. We need to generalize the
contents to something that covers the CPU port as well: the "ds, port"
tuple is fine for that.
Note that the new procedure for notifying the successful FDB offload is
inspired from the rocker model.
Also, nothing was being done if added_by_user was false. Let's check for
that a lot earlier, and don't actually bother to schedule the worker
for nothing.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 6 Jan 2021 09:51:31 +0000 (11:51 +0200)]
net: dsa: be louder when a non-legacy FDB operation fails
The dev_close() call was added in commit
c9eb3e0f8701 ("net: dsa: Add
support for learning FDB through notification") "to indicate inconsistent
situation" when we could not delete an FDB entry from the port.
bridge fdb del d8:58:d7:00:ca:6d dev swp0 self master
It is a bit drastic and at the same time not helpful if the above fails
to only print with netdev_dbg log level, but on the other hand to bring
the interface down.
So increase the verbosity of the error message, and drop dev_close().
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Vladimir Oltean [Wed, 6 Jan 2021 09:51:30 +0000 (11:51 +0200)]
net: bridge: notify switchdev of disappearance of old FDB entry upon migration
Currently the bridge emits atomic switchdev notifications for
dynamically learnt FDB entries. Monitoring these notifications works
wonders for switchdev drivers that want to keep their hardware FDB in
sync with the bridge's FDB.
For example station A wants to talk to station B in the diagram below,
and we are concerned with the behavior of the bridge on the DUT device:
DUT
+-------------------------------------+
| br0 |
| +------+ +------+ +------+ +------+ |
| | | | | | | | | |
| | swp0 | | swp1 | | swp2 | | eth0 | |
+-------------------------------------+
| | |
Station A | |
| |
+--+------+--+ +--+------+--+
| | | | | | | |
| | swp0 | | | | swp0 | |
Another | +------+ | | +------+ | Another
switch | br0 | | br0 | switch
| +------+ | | +------+ |
| | | | | | | |
| | swp1 | | | | swp1 | |
+--+------+--+ +--+------+--+
|
Station B
Interfaces swp0, swp1, swp2 are handled by a switchdev driver that has
the following property: frames injected from its control interface bypass
the internal address analyzer logic, and therefore, this hardware does
not learn from the source address of packets transmitted by the network
stack through it. So, since bridging between eth0 (where Station B is
attached) and swp0 (where Station A is attached) is done in software,
the switchdev hardware will never learn the source address of Station B.
So the traffic towards that destination will be treated as unknown, i.e.
flooded.
This is where the bridge notifications come in handy. When br0 on the
DUT sees frames with Station B's MAC address on eth0, the switchdev
driver gets these notifications and can install a rule to send frames
towards Station B's address that are incoming from swp0, swp1, swp2,
only towards the control interface. This is all switchdev driver private
business, which the notification makes possible.
All is fine until someone unplugs Station B's cable and moves it to the
other switch:
DUT
+-------------------------------------+
| br0 |
| +------+ +------+ +------+ +------+ |
| | | | | | | | | |
| | swp0 | | swp1 | | swp2 | | eth0 | |
+-------------------------------------+
| | |
Station A | |
| |
+--+------+--+ +--+------+--+
| | | | | | | |
| | swp0 | | | | swp0 | |
Another | +------+ | | +------+ | Another
switch | br0 | | br0 | switch
| +------+ | | +------+ |
| | | | | | | |
| | swp1 | | | | swp1 | |
+--+------+--+ +--+------+--+
|
Station B
Luckily for the use cases we care about, Station B is noisy enough that
the DUT hears it (on swp1 this time). swp1 receives the frames and
delivers them to the bridge, who enters the unlikely path in br_fdb_update
of updating an existing entry. It moves the entry in the software bridge
to swp1 and emits an addition notification towards that.
As far as the switchdev driver is concerned, all that it needs to ensure
is that traffic between Station A and Station B is not forever broken.
If it does nothing, then the stale rule to send frames for Station B
towards the control interface remains in place. But Station B is no
longer reachable via the control interface, but via a port that can
offload the bridge port learning attribute. It's just that the port is
prevented from learning this address, since the rule overrides FDB
updates. So the rule needs to go. The question is via what mechanism.
It sure would be possible for this switchdev driver to keep track of all
addresses which are sent to the control interface, and then also listen
for bridge notifier events on its own ports, searching for the ones that
have a MAC address which was previously sent to the control interface.
But this is cumbersome and inefficient. Instead, with one small change,
the bridge could notify of the address deletion from the old port, in a
symmetrical manner with how it did for the insertion. Then the switchdev
driver would not be required to monitor learn/forget events for its own
ports. It could just delete the rule towards the control interface upon
bridge entry migration. This would make hardware address learning be
possible again. Then it would take a few more packets until the hardware
and software FDB would be in sync again.
Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Acked-by: Nikolay Aleksandrov <nikolay@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 7 Jan 2021 22:56:35 +0000 (14:56 -0800)]
Merge branch 'r8169-improve-rtl8168g-phy-suspend-quirk'
Heiner Kallweit says:
====================
r8169: improve RTL8168g PHY suspend quirk
According to Realtek the ERI register 0x1a8 quirk is needed to work
around a hw issue with the PHY on RTL8168g. The register needs to be
changed before powering down the PHY. Currently we don't meet this
requirement, however I'm not aware of any problems caused by this.
Therefore I see the change as an improvement.
The PHY driver has no means to access the chip ERI registers,
therefore we have to intercept MDIO writes to the BMCR register.
If the BMCR_PDOWN bit is going to be set, then let's apply the
quirk before actually powering down the PHY.
====================
Link: https://lore.kernel.org/r/9303c2cf-c521-beea-c09f-63b5dfa91b9c@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Wed, 6 Jan 2021 10:49:50 +0000 (11:49 +0100)]
r8169: improve RTL8168g PHY suspend quirk
According to Realtek the ERI register 0x1a8 quirk is needed to work
around a hw issue with the PHY on RTL8168g. The register needs to be
changed before powering down the PHY. Currently we don't meet this
requirement, however I'm not aware of any problems caused by this.
Therefore I see the change as an improvement.
The PHY driver has no means to access the chip ERI registers,
therefore we have to intercept MDIO writes to BMCR register.
If the BMCR_PDOWN bit is going to be set, then let's apply the
quirk before actually powering down the PHY.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Wed, 6 Jan 2021 10:47:08 +0000 (11:47 +0100)]
r8169: move ERI access functions to avoid forward declaration
No functional change here. We just move a code block to avoid a
function forward declaration in a subsequent change.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Heiner Kallweit [Wed, 6 Jan 2021 13:03:40 +0000 (14:03 +0100)]
net: phy: replace mutex_is_locked with lockdep_assert_held in phylib
Switch to lockdep_assert_held(_once), similar to what is being done
in other subsystems. One advantage is that there's zero runtime
overhead if lockdep support isn't enabled.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/ccc40b9d-8ee0-43a1-5009-2cc95ca79c85@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Florian Fainelli [Wed, 6 Jan 2021 17:09:44 +0000 (09:09 -0800)]
net: phy: bcm7xxx: Add an entry for BCM72116
BCM72116 features a 28nm integrated EPHY, add an entry to match this PHY
OUI.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210106170944.1253046-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 7 Jan 2021 20:53:32 +0000 (12:53 -0800)]
Merge branch 'udp_tunnel_nic-post-conversion-cleanup'
udp_tunnel_nic: post conversion cleanup
It has been two releases since we added the common infra for UDP
tunnel port offload, and we have not heard of any major issues.
Remove the old direct driver NDOs completely, and perform minor
simplifications in the tunnel drivers.
Link: https://lore.kernel.org/r/20210106210637.1839662-1-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Wed, 6 Jan 2021 21:06:37 +0000 (13:06 -0800)]
udp_tunnel: reshuffle NETIF_F_RX_UDP_TUNNEL_PORT checks
Move the NETIF_F_RX_UDP_TUNNEL_PORT feature check into
udp_tunnel_nic_*_port() helpers, since they're always
done right before the call.
Add similar checks before calling the notifier.
udp_tunnel_nic invokes the notifier without checking
features which could result in some wasted cycles.
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Wed, 6 Jan 2021 21:06:36 +0000 (13:06 -0800)]
net: remove ndo_udp_tunnel_* callbacks
All UDP tunnel port management is now routed via udp_tunnel_nic
infra directly. Remove the old callbacks.
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Wed, 6 Jan 2021 21:06:35 +0000 (13:06 -0800)]
udp_tunnel: remove REGISTER/UNREGISTER handling from tunnel drivers
udp_tunnel_nic handles REGISTER and UNREGISTER event, now that all
drivers use that infra we can drop the event handling in the tunnel
drivers.
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Wed, 6 Jan 2021 21:06:34 +0000 (13:06 -0800)]
udp_tunnel: hard-wire NDOs to udp_tunnel_nic_*_port() helpers
All drivers use udp_tunnel_nic_*_port() helpers, prepare for
NDO removal by invoking those helpers directly.
The helpers are safe to call on all devices, they check if
device has the UDP tunnel state initialized.
Reviewed-by: Alexander Duyck <alexanderduyck@fb.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Florian Fainelli [Wed, 6 Jan 2021 19:15:45 +0000 (11:15 -0800)]
net: broadcom: Drop OF dependency from BGMAC_PLATFORM
All of the OF code that is used has stubbed and will compile and link
just fine, keeping COMPILE_TEST is enough.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Acked-by: Randy Dunlap <rdunlap@infradead.org>
Link: https://lore.kernel.org/r/20210106191546.1358324-1-f.fainelli@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 7 Jan 2021 20:39:56 +0000 (12:39 -0800)]
Merge branch 'bcm63xx_enet-major-makeover-of-driver'
Sieng Piaw Liew says:
====================
bcm63xx_enet: major makeover of driver
This patch series aim to improve the bcm63xx_enet driver by integrating the
latest networking features, i.e. batched rx processing, BQL, build_skb,
etc.
The newer enetsw SoCs are found to be able to do unaligned rx DMA by adding
NET_IP_ALIGN padding which, combined with these patches, improved packet
processing performance by ~50% on BCM6328.
Older non-enetsw SoCs still benefit mainly from rx batching. Performance
improvement of ~30% is observed on BCM6333.
The BCM63xx SoCs are designed for routers. As such, having BQL is
beneficial as well as trivial to add.
v3:
* Simplify xmit_more patch by not moving around the code needlessly.
* Fix indentation in xmit_more patch.
* Fix indentation in build_skb patch.
* Split rx ring cleanup patch from build_skb patch and precede build_skb
patch for better understanding, as suggested by Florian Fainelli.
v2:
* Add xmit_more support and rx loop improvisation patches.
* Moved BQL netdev_reset_queue() to bcm_enet_stop()/bcm_enetsw_stop()
functions as suggested by Florian Fainelli.
* Improved commit messages.
====================
Link: https://lore.kernel.org/r/20210106144208.1935-1-liew.s.piaw@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Sieng Piaw Liew [Wed, 6 Jan 2021 14:42:08 +0000 (22:42 +0800)]
bcm63xx_enet: improve rx loop
Use existing rx processed count to track against budget, thereby making
budget decrement operation redundant.
rx_desc_count can be calculated outside the rx loop, making the loop a
bit smaller.
Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Sieng Piaw Liew [Wed, 6 Jan 2021 14:42:07 +0000 (22:42 +0800)]
bcm63xx_enet: convert to build_skb
We can increase the efficiency of rx path by using buffers to receive
packets then build SKBs around them just before passing into the network
stack. In contrast, preallocating SKBs too early reduces CPU cache
efficiency.
Check if we're in NAPI context when refilling RX. Normally we're almost
always running in NAPI context. Dispatch to napi_alloc_frag directly
instead of relying on netdev_alloc_frag which does the same but
with the overhead of local_bh_disable/enable.
Tested on BCM6328 320 MHz and iperf3 -M 512 to measure packet/sec
performance. Included netif_receive_skb_list and NET_IP_ALIGN
optimizations.
Before:
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-10.00 sec 49.9 MBytes 41.9 Mbits/sec 197 sender
[ 4] 0.00-10.00 sec 49.3 MBytes 41.3 Mbits/sec receiver
After:
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-30.00 sec 171 MBytes 47.8 Mbits/sec 272 sender
[ 4] 0.00-30.00 sec 170 MBytes 47.6 Mbits/sec receiver
Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Sieng Piaw Liew [Wed, 6 Jan 2021 14:42:06 +0000 (22:42 +0800)]
bcm63xx_enet: consolidate rx SKB ring cleanup code
The rx SKB ring use the same code for cleanup at various points.
Combine them into a function to reduce lines of code.
Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Sieng Piaw Liew [Wed, 6 Jan 2021 14:42:05 +0000 (22:42 +0800)]
bcm63xx_enet: alloc rx skb with NET_IP_ALIGN
Use netdev_alloc_skb_ip_align on newer SoCs with integrated switch
(enetsw) when refilling RX. Increases packet processing performance
by 30% (with netif_receive_skb_list).
Non-enetsw SoCs cannot function with the extra pad so continue to use
the regular netdev_alloc_skb.
Tested on BCM6328 320 MHz and iperf3 -M 512 to measure packet/sec
performance.
Before:
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-30.00 sec 120 MBytes 33.7 Mbits/sec 277 sender
[ 4] 0.00-30.00 sec 120 MBytes 33.5 Mbits/sec receiver
After (+netif_receive_skb_list):
[ 4] 0.00-30.00 sec 155 MBytes 43.3 Mbits/sec 354 sender
[ 4] 0.00-30.00 sec 154 MBytes 43.1 Mbits/sec receiver
Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Sieng Piaw Liew [Wed, 6 Jan 2021 14:42:04 +0000 (22:42 +0800)]
bcm63xx_enet: add xmit_more support
Support bulking hardware TX queue by using netdev_xmit_more().
Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Sieng Piaw Liew [Wed, 6 Jan 2021 14:42:03 +0000 (22:42 +0800)]
bcm63xx_enet: add BQL support
Add Byte Queue Limits support to reduce/remove bufferbloat in
bcm63xx_enet.
Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Sieng Piaw Liew [Wed, 6 Jan 2021 14:42:02 +0000 (22:42 +0800)]
bcm63xx_enet: batch process rx path
Use netif_receive_skb_list to batch process rx skb.
Tested on BCM6328 320 MHz using iperf3 -M 512, increasing performance
by 12.5%.
Before:
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-30.00 sec 120 MBytes 33.7 Mbits/sec 277 sender
[ 4] 0.00-30.00 sec 120 MBytes 33.5 Mbits/sec receiver
After:
[ ID] Interval Transfer Bandwidth Retr
[ 4] 0.00-30.00 sec 136 MBytes 37.9 Mbits/sec 203 sender
[ 4] 0.00-30.00 sec 135 MBytes 37.7 Mbits/sec receiver
Signed-off-by: Sieng Piaw Liew <liew.s.piaw@gmail.com>
Acked-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Kristian Evensen [Wed, 6 Jan 2021 12:24:03 +0000 (13:24 +0100)]
qmi_wwan: Increase headroom for QMAP SKBs
When measuring the throughput (iperf3 + TCP) while routing on a
not-so-powerful device (Mediatek MT7621, 880MHz CPU), I noticed that I
achieved significantly lower speeds with QMI-based modems than for
example a USB LAN dongle. The CPU was saturated in all of my tests.
With the dongle I got ~300 Mbit/s, while I only measured ~200 Mbit/s
with the modems. All offloads, etc. were switched off for the dongle,
and I configured the modems to use QMAP (16k aggregation). The tests
with the dongle were performed in my local (gigabit) network, while the
LTE network the modems were connected to delivers 700-800 Mbit/s.
Profiling the kernel revealed the cause of the performance difference.
In qmimux_rx_fixup(), an SKB is allocated for each packet contained in
the URB. This SKB has too little headroom, causing the check in
skb_cow() (called from ip_forward()) to fail. pskb_expand_head() is then
called and the SKB is reallocated. In the output from perf, I see that a
significant amount of time is spent in pskb_expand_head() + support
functions.
In order to ensure that the SKB has enough headroom, this commit
increases the amount of memory allocated in qmimux_rx_fixup() by
LL_MAX_HEADER. The reason for using LL_MAX_HEADER and not a more
accurate value, is that we do not know the type of the outgoing network
interface. After making this change, I achieve the same throughput with
the modems as with the dongle.
Signed-off-by: Kristian Evensen <kristian.evensen@gmail.com>
Acked-by: Bjørn Mork <bjorn@mork.no>
Link: https://lore.kernel.org/r/20210106122403.1321180-1-kristian.evensen@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Jakub Kicinski [Thu, 7 Jan 2021 18:53:31 +0000 (10:53 -0800)]
Merge tag 'linux-can-next-for-5.12-
20210106' of git://git./linux/kernel/git/mkl/linux-can-next
Marc Kleine-Budde says:
====================
pull-request: can-next 2021-01-06
The first 16 patches are by me and target the tcan4x5x SPI glue driver for the
m_can CAN driver. First there are a several cleanup commits, then the SPI
regmap part is converted to 8 bits per word, to make it possible to use that
driver on SPI controllers that only support the 8 bit per word mode (such as
the SPI cores on the raspberry pi).
Oliver Hartkopp contributes a patch for the CAN_RAW protocol. The getsockopt()
for CAN_RAW_FILTER is changed to return -ERANGE if the filterset does not fit
into the provided user space buffer.
The last two patches are by Joakim Zhang and add wakeup support to the flexcan
driver for the i.MX8QM SoC. The dt-bindings docs are extended to describe the
added property.
* tag 'linux-can-next-for-5.12-
20210106' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next:
can: flexcan: add CAN wakeup function for i.MX8QM
dt-bindings: can: fsl,flexcan: add fsl,scu-index property to indicate a resource
can: raw: return -ERANGE when filterset does not fit into user space buffer
can: tcan4x5x: add support for half-duplex controllers
can: tcan4x5x: rework SPI access
can: tcan4x5x: add {wr,rd}_table
can: tcan4x5x: add max_raw_{read,write} of 256
can: tcan4x5x: tcan4x5x_regmap: set reg_stride to 4
can: tcan4x5x: fix max register value
can: tcan4x5x: tcan4x5x_regmap_init(): use spi as context pointer
can: tcan4x5x: tcan4x5x_regmap_write(): remove not needed casts and replace 4 by sizeof
can: tcan4x5x: rename regmap_spi_gather_write() -> tcan4x5x_regmap_gather_write()
can: tcan4x5x: remove regmap async support
can: tcan4x5x: tcan4x5x_bus: remove not needed read_flag_mask
can: tcan4x5x: mark struct regmap_bus tcan4x5x_bus as constant
can: tcan4x5x: move regmap code into seperate file
can: tcan4x5x: rename tcan4x5x.c -> tcan4x5x-core.c
can: tcan4x5x: beautify indention of tcan4x5x_of_match and tcan4x5x_id_table
can: tcan4x5x: replace DEVICE_NAME by KBUILD_MODNAME
====================
Link: https://lore.kernel.org/r/20210107094900.173046-1-mkl@pengutronix.de
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Rafał Miłecki [Wed, 6 Jan 2021 09:09:15 +0000 (10:09 +0100)]
net: dsa: print error on invalid port index
Looking for an -EINVAL all over the dsa code could take hours for
inexperienced DSA users.
Signed-off-by: Rafał Miłecki <rafal@milecki.pl>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://lore.kernel.org/r/20210106090915.21439-1-zajec5@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Joakim Zhang [Fri, 6 Nov 2020 10:56:27 +0000 (18:56 +0800)]
can: flexcan: add CAN wakeup function for i.MX8QM
The System Controller Firmware (SCFW) is a low-level system function
which runs on a dedicated Cortex-M core to provide power, clock, and
resource management. It exists on some i.MX8 processors. e.g. i.MX8QM
(QM, QP), and i.MX8QX (QXP, DX). SCU driver manages the IPC interface
between host CPU and the SCU firmware running on M4.
For i.MX8QM, stop mode request is controlled by System Controller Unit(SCU)
firmware, this patch introduces FLEXCAN_QUIRK_SETUP_STOP_MODE_SCFW quirk
for this function.
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Link: https://lore.kernel.org/r/20201106105627.31061-6-qiangqing.zhang@nxp.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Joakim Zhang [Fri, 6 Nov 2020 10:56:24 +0000 (18:56 +0800)]
dt-bindings: can: fsl,flexcan: add fsl,scu-index property to indicate a resource
For SoCs with SCU support, need setup stop mode via SCU firmware, so this
property can help indicate a resource in SCU firmware.
Signed-off-by: Joakim Zhang <qiangqing.zhang@nxp.com>
Link: https://lore.kernel.org/r/20201106105627.31061-3-qiangqing.zhang@nxp.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Oliver Hartkopp [Wed, 16 Dec 2020 17:49:28 +0000 (18:49 +0100)]
can: raw: return -ERANGE when filterset does not fit into user space buffer
Multiple filters (struct can_filter) can be set with the setsockopt()
function, which was originally intended as a write-only operation.
As getsockopt() also provides a CAN_RAW_FILTER option to read back the
given filters, the caller has to provide an appropriate user space buffer.
In the case this buffer is too small the getsockopt() silently truncates
the filter information and gives no information about the needed space.
This is safe but not convenient for the programmer.
In net/core/sock.c the SO_PEERGROUPS sockopt had a similar requirement
and solved it by returning -ERANGE in the case that the provided data
does not fit into the given user space buffer and fills the required size
into optlen, so that the caller can retry with a matching buffer length.
This patch adopts this approach for CAN_RAW_FILTER getsockopt().
Reported-by: Phillip Schichtel <phillip@schich.tel>
Signed-off-by: Oliver Hartkopp <socketcan@hartkopp.net>
Tested-By: Phillip Schichtel <phillip@schich.tel>
Link: https://lore.kernel.org/r/20201216174928.21663-1-socketcan@hartkopp.net
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:46 +0000 (00:17 +0100)]
can: tcan4x5x: add support for half-duplex controllers
This patch adds back support for half-duplex controllers, which was removed in
the last patch.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-17-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:45 +0000 (00:17 +0100)]
can: tcan4x5x: rework SPI access
This patch reworks the SPI access and fixes several probems:
- tcan4x5x_regmap_gather_write(), tcan4x5x_regmap_read():
Do not place variable "addr" on stack and use it as buffer for SPI
transfer. Buffers for SPI transfers must be allocated from DMA save
memory.
- tcan4x5x_regmap_gather_write(), tcan4x5x_regmap_read():
Halfe number of SPI transfers by using a single buffer + memcpy().
This improves the performance, especially on SPI controllers, which
use interrupt based transfers.
- Use "8" bits per word, not "32". This makes it possible to use this
driver on SoCs like the Raspberry Pi, which SPI host controller
drivers only support 8 bits per word.
Note: this breaks half duplex only controllers. Support for them will be
re-added in the next patch.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-16-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:44 +0000 (00:17 +0100)]
can: tcan4x5x: add {wr,rd}_table
The memory space of the chip is not fully populated, so add a regmap range
table to document this.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-15-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:43 +0000 (00:17 +0100)]
can: tcan4x5x: add max_raw_{read,write} of 256
The tcan4x5x chip support bulk read/write, but as the length field is only 8
bits wide, the maximum is 256. A length of 0 is treated as 256.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-14-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:42 +0000 (00:17 +0100)]
can: tcan4x5x: tcan4x5x_regmap: set reg_stride to 4
This patch sets the regmap stide to 4, as the chip only supports access on 32
bit alligned access.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-13-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:41 +0000 (00:17 +0100)]
can: tcan4x5x: fix max register value
This patch fixes the max register value for the regmap.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-12-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:40 +0000 (00:17 +0100)]
can: tcan4x5x: tcan4x5x_regmap_init(): use spi as context pointer
This patch replaces the context pointer of the regmap callback functions by a
pointer to the spi_device. This saves one level of indirection in the
callbacks.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-11-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:39 +0000 (00:17 +0100)]
can: tcan4x5x: tcan4x5x_regmap_write(): remove not needed casts and replace 4 by sizeof
This patch simplifies the tcan4x5x_regmap_write(0 function by removing not
needed casts and replaces hardcoded "4" by appropriate sizeof()s.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-10-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:38 +0000 (00:17 +0100)]
can: tcan4x5x: rename regmap_spi_gather_write() -> tcan4x5x_regmap_gather_write()
This patch renames the regmap_spi_gather_write() function to
tcan4x5x_regmap_gather_write(). Now it has a "tcan4x5x_" prefix as all other
functions in this driver.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-9-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:37 +0000 (00:17 +0100)]
can: tcan4x5x: remove regmap async support
The driver doesn't use regmap async support, so remove the stubs.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-8-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:36 +0000 (00:17 +0100)]
can: tcan4x5x: tcan4x5x_bus: remove not needed read_flag_mask
With C99 initializers, all non mentioned members are initialzied to 0, so
remove not needed initialization of read_flag_mask.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-7-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:35 +0000 (00:17 +0100)]
can: tcan4x5x: mark struct regmap_bus tcan4x5x_bus as constant
This patch marks the struct regmap_bus tcan4x5x_bus as constant.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-6-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:34 +0000 (00:17 +0100)]
can: tcan4x5x: move regmap code into seperate file
This patch moves the regmap code into a seperate file.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-5-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:33 +0000 (00:17 +0100)]
can: tcan4x5x: rename tcan4x5x.c -> tcan4x5x-core.c
This is a preparation patch to move the regmap related code into a seperate
file. This patch removes the tcan4x5x.c to tcan4x5x-core.c.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-4-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:32 +0000 (00:17 +0100)]
can: tcan4x5x: beautify indention of tcan4x5x_of_match and tcan4x5x_id_table
This patch beautifies the indention of the tcan4x5x_of_match and
tcan4x5x_id_table.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-3-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Marc Kleine-Budde [Tue, 15 Dec 2020 23:17:31 +0000 (00:17 +0100)]
can: tcan4x5x: replace DEVICE_NAME by KBUILD_MODNAME
This patch replaces the DEVICE_NAME macro by KBUILD_MODNAME and removed the
superfluous DEVICE_NAME.
Reviewed-by: Dan Murphy <dmurphy@ti.com>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Link: https://lore.kernel.org/r/20201215231746.1132907-2-mkl@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Masanari Iida [Tue, 5 Jan 2021 14:40:29 +0000 (23:40 +0900)]
net-next: docs: Fix typos in snmp_counter.rst
This patch fixes some spelling typos in snmp_counter.rst
Signed-off-by: Masanari Iida <standby24x7@gmail.com>
Reviewed-by: Randy Dunlap <rdunlap@infradead.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Wed, 6 Jan 2021 01:05:12 +0000 (17:05 -0800)]
Merge branch 'net-ks8851-Add-KS8851-PHY-support'
Marek Vasut says:
====================
net: ks8851: Add KS8851 PHY support
The KS8851 has a reduced internal PHY, which is accessible through its
registers at offset 0xe4. The PHY is compatible with KS886x PHY present
in Micrel switches, including the PHY ID Low/High registers swap, which
is present both in the MAC and the switch.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Marek Vasut [Tue, 5 Jan 2021 14:11:51 +0000 (15:11 +0100)]
net: ks8851: Register MDIO bus and the internal PHY
The KS8851 has a reduced internal PHY, which is accessible through its
registers at offset 0xe4. The PHY is compatible with KS886x PHY present
in Micrel switches, except the PHY ID Low/High registers are swapped.
Register MDIO bus so this PHY can be detected and probed by phylib.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Lukas Wunner <lukas@wunner.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Marek Vasut [Tue, 5 Jan 2021 14:11:50 +0000 (15:11 +0100)]
net: phy: micrel: Add KS8851 PHY support
The KS8851 has a reduced internal PHY, which is accessible through its
registers at offset 0xe4. The PHY is compatible with KS886x PHY present
in Micrel switches, including the PHY ID Low/High registers swap, which
is present both in the MAC and the switch.
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Marek Vasut <marex@denx.de>
Cc: Andrew Lunn <andrew@lunn.ch>
Cc: Heiner Kallweit <hkallweit1@gmail.com>
Cc: Lukas Wunner <lukas@wunner.de>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yunjian Wang [Tue, 5 Jan 2021 06:31:34 +0000 (14:31 +0800)]
macvlan: remove redundant null check on data
Because macvlan_common_newlink() and macvlan_changelink() already
checked NULL data parameter, so the additional check is unnecessary,
just remove it.
Fixes: 79cf79abce71 ("macvlan: add source mode")
Signed-off-by: Yunjian Wang <wangyunjian@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Geetha sowjanya [Mon, 4 Jan 2021 07:20:39 +0000 (12:50 +0530)]
octeontx2-pf: Add RSS multi group support
Hardware supports 8 RSS groups per interface. Currently we are using
only group '0'. This patch allows user to create new RSS groups/contexts
and use the same as destination for flow steering rules.
usage:
To steer the traffic to RQ 2,3
ethtool -X eth0 weight 0 0 1 1 context new
(It will print the allocated context id number)
New RSS context is 1
ethtool -N eth0 flow-type tcp4 dst-port 80 context 1 loc 1
To delete the context
ethtool -X eth0 context 1 delete
When an RSS context is removed, the active classification
rules using this context are also removed.
Change-log:
v4
- Fixed compiletime warning.
- Address Saeed's comments on v3.
v3
- Coverted otx2_set_rxfh() to use new function.
v2
- Removed unrelated whitespace
- Coverted otx2_get_rxfh() to use new function.
Signed-off-by: Sunil Kovvuri Goutham <sgoutham@marvell.com>
Signed-off-by: Geetha sowjanya <gakula@marvell.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Bongsu Jeon [Thu, 31 Dec 2020 02:59:26 +0000 (11:59 +0900)]
net: nfc: nci: Change the NCI close sequence
If there is a NCI command in work queue after closing the NCI device at
nci_unregister_device, The NCI command timer starts at flush_workqueue
function and then NCI command timeout handler would be called 5 second
after flushing the NCI command work queue and destroying the queue.
At that time, the timeout handler would try to use NCI command work queue
that is destroyed already. it will causes the problem. To avoid this
abnormal situation, change the sequence to prevent the NCI command timeout
handler from being called after destroying the NCI command work queue.
Signed-off-by: Bongsu Jeon <bongsu.jeon@samsung.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Wed, 30 Dec 2020 09:18:09 +0000 (17:18 +0800)]
net: kcm: Replace fput with sockfd_put
The function sockfd_lookup uses fget on the value that is stored in
the file field of the returned structure, so fput should ultimately be
applied to this value. This can be done directly, but it seems better
to use the specific macro sockfd_put, which does the same thing.
Perform a source code refactoring by using the following semantic patch.
// <smpl>
@@
expression s;
@@
s = sockfd_lookup(...)
...
+ sockfd_put(s);
- fput(s->file);
// </smpl>
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Wed, 30 Dec 2020 08:18:35 +0000 (16:18 +0800)]
net/mlxfw: Use kzalloc for allocating only one thing
Use kzalloc rather than kcalloc(1,...)
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
@@
- kcalloc(1,
+ kzalloc(
...)
// </smpl>
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 5 Jan 2021 23:44:45 +0000 (15:44 -0800)]
Merge tag 'mlx5-updates-2021-01-05' of git://git./linux/kernel/git/saeed/linux
Saeed Mahameed says:
====================
mlx5-updates-2021-01-05
SW steering, Refactor to have a device specific STE layer below dr_ste
This series introduces some improvements and refactoring by adding a new layer
below dr_ste to allow support for different devices format.
It adds a struct of device specific callbacks for STE layer below dr_ste.
Each device will implement its HW-specific function, and a common logic
from the DR code will access these functions through the new ste_ctx API.
Connect-X5-style steering format is called STE_v0.
In the next patch series we bring the Connect-X6-style format - STE_v1.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Tue, 29 Dec 2020 13:53:09 +0000 (21:53 +0800)]
octeontx2-af: Use kzalloc for allocating only one thing
Use kzalloc rather than kcalloc(1,...)
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
@@
- kcalloc(1,
+ kzalloc(
...)
// </smpl>
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Tue, 29 Dec 2020 13:53:01 +0000 (21:53 +0800)]
iavf: Use kzalloc for allocating only one thing
Use kzalloc rather than kcalloc(1,...)
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
@@
- kcalloc(1,
+ kzalloc(
...)
// </smpl>
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Tue, 29 Dec 2020 13:52:54 +0000 (21:52 +0800)]
liquidio: Use kzalloc for allocating only one thing
Use kzalloc rather than kcalloc(1,...)
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
@@
- kcalloc(1,
+ kzalloc(
...)
// </smpl>
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Tue, 29 Dec 2020 13:52:46 +0000 (21:52 +0800)]
bnxt_en: Use kzalloc for allocating only one thing
Use kzalloc rather than kcalloc(1,...)
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
@@
- kcalloc(1,
+ kzalloc(
...)
// </smpl>
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Tue, 29 Dec 2020 13:52:38 +0000 (21:52 +0800)]
net: dsa: sja1105: Use kzalloc for allocating only one thing
Use kzalloc rather than kcalloc(1,...)
The semantic patch that makes this change is as follows:
(http://coccinelle.lip6.fr/)
// <smpl>
@@
@@
- kcalloc(1,
+ kzalloc(
...)
// </smpl>
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Tue, 29 Dec 2020 13:49:54 +0000 (21:49 +0800)]
cavium/liquidio: Use DEFINE_SPINLOCK() for spinlock
spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Tue, 29 Dec 2020 13:49:47 +0000 (21:49 +0800)]
net: ixp4xx_eth: Use DEFINE_SPINLOCK() for spinlock
spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Tue, 29 Dec 2020 13:49:27 +0000 (21:49 +0800)]
net: usb: Use DEFINE_SPINLOCK() for spinlock
spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Tue, 29 Dec 2020 13:49:18 +0000 (21:49 +0800)]
net: wan: Use DEFINE_SPINLOCK() for spinlock
spinlock can be initialized automatically with DEFINE_SPINLOCK()
rather than explicitly calling spin_lock_init().
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Tue, 29 Dec 2020 13:49:04 +0000 (21:49 +0800)]
net: tipc: Replace expression with offsetof()
Use the existing offsetof() macro instead of duplicating code.
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Zheng Yongjun [Tue, 29 Dec 2020 13:48:56 +0000 (21:48 +0800)]
net: wan: Replace simple_strtol by simple_strtoul
The simple_strtol() function is deprecated, use simple_strtoul() instead.
Signed-off-by: Zheng Yongjun <zhengyongjun3@huawei.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Loic Poulain [Tue, 29 Dec 2020 09:04:54 +0000 (10:04 +0100)]
net: mhi: Add raw IP mode support
MHI net is protocol agnostic, the payload protocol depends on the modem
configuration, which can be either RMNET (IP muxing and aggregation) or
raw IP. This patch adds support for incomming IPv4/IPv6 packets, that
was previously unconditionnaly reported as RMNET packets.
Signed-off-by: Loic Poulain <loic.poulain@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
David S. Miller [Tue, 5 Jan 2021 23:19:19 +0000 (15:19 -0800)]
Merge branch 'enetc-code-cleanups'
Michael Walle says:
====================
enetc: code cleanups
This are some code cleanups in the MDIO part of the enetc. They are
intended to make the code more readable.
====================
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Walle [Mon, 28 Dec 2020 13:00:34 +0000 (14:00 +0100)]
enetc: reorder macros and functions
Now that there aren't any more macros with parameters, move the macros
above any functions.
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Walle [Mon, 28 Dec 2020 13:00:33 +0000 (14:00 +0100)]
enetc: drop MDIO_DATA() macro
value is u16, masking with 0xffff is a nop. Drop it.
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Walle [Mon, 28 Dec 2020 13:00:32 +0000 (14:00 +0100)]
enetc: don't use macro magic for the readx_poll_timeout() callback
The macro enetc_mdio_rd_reg() is just used in that particular case and
has a hardcoded parameter name "mdio_priv". Define a specific function
to use for readx_poll_timeout() instead. Also drop the TIMEOUT macro
since it is used just once.
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Tested-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Michael Walle [Mon, 28 Dec 2020 13:00:31 +0000 (14:00 +0100)]
enetc: drop unneeded indirection
Before commit
6517798dd343 ("enetc: Make MDIO accessors more generic and
export to include/linux/fsl") these macros actually had some benefits.
But after the commit it just makes the code hard to read. Drop the macro
indirections.
Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Vladimir Oltean <vladimir.oltean@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Yevgeny Kliteynik [Thu, 19 Nov 2020 05:15:49 +0000 (07:15 +0200)]
net/mlx5: DR, Move STEv0 modify header logic
Move HW specific modify header fields and logic to STEv0 file
and use the new STE context callbacks.
Since STEv0 and STEv1 modify actions values are different, each
version has its own implementation.
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Alex Vesker <valex@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Yevgeny Kliteynik [Thu, 19 Nov 2020 05:14:27 +0000 (07:14 +0200)]
net/mlx5: DR, Add STE modify header actions per-device API
Extend the STE context struct with per-device modify header actions.
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>
Yevgeny Kliteynik [Thu, 19 Nov 2020 05:03:43 +0000 (07:03 +0200)]
net/mlx5: DR, Move STEv0 action apply logic
Use STE tx/rx actions per-device API: move HW specific
action apply logic from dr_ste to STEv0 file - STEv0 and
STEv1 actions format is different, each version should
have its own implementation.
Signed-off-by: Alex Vesker <valex@nvidia.com>
Signed-off-by: Yevgeny Kliteynik <kliteyn@nvidia.com>
Reviewed-by: Saeed Mahameed <saeedm@nvidia.com>
Signed-off-by: Saeed Mahameed <saeedm@nvidia.com>