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Merge tag 'linux-can-next-for-6.15-20250219' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next
Marc Kleine-Budde says:
====================
pull-request: can-next 2025-02-19
this is a pull request of 12 patches for net-next/master.
The first 4 patches are by Krzysztof Kozlowski and simplify the c_can
driver's c_can_plat_probe() function.
Ciprian Marian Costea contributes 3 patches to add S32G2/S32G3 support
to the flexcan driver.
Ruffalo Lavoisier's patch removes a duplicated word from the mcp251xfd
DT bindings documentation.
Oleksij Rempel extends the J1939 documentation.
The next patch is by Oliver Hartkopp and adds access for the Remote
Request Substitution bit in CAN-XL frames.
Henrik Brix Andersen's patch for the gs_usb driver adds support for
the CANnectivity firmware.
The last patch is by Robin van der Gracht and removes a duplicated
setup of RX FIFO in the rockchip_canfd driver.
linux-can-next-for-6.15-20250219
* tag 'linux-can-next-for-6.15-20250219' of git://git.kernel.org/pub/scm/linux/kernel/git/mkl/linux-can-next:
can: rockchip_canfd: rkcanfd_chip_fifo_setup(): remove duplicated setup of RX FIFO
can: gs_usb: add VID/PID for the CANnectivity firmware
can: canxl: support Remote Request Substitution bit access
can: j1939: Extend stack documentation with buffer size behavior
dt-binding: can: mcp251xfd: remove duplicate word
can: flexcan: add NXP S32G2/S32G3 SoC support
can: flexcan: Add quirk to handle separate interrupt lines for mailboxes
dt-bindings: can: fsl,flexcan: add S32G2/S32G3 SoC support
can: c_can: Use syscon_regmap_lookup_by_phandle_args
can: c_can: Use of_property_present() to test existence of DT property
can: c_can: Simplify handling syscon error path
can: c_can: Drop useless final probe failure message
====================
Link: https://patch.msgid.link/20250219113354.529611-1-mkl@pengutronix.de
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
The external PHY will undergo a soft reset twice during the resume process
when it wake up from suspend. The first reset occurs when the axienet
driver calls phylink_of_phy_connect(), and the second occurs when
mdio_bus_phy_resume() invokes phy_init_hw(). The second soft reset of the
external PHY does not reinitialize the internal PHY, which causes issues
with the internal PHY, resulting in the PHY link being down. To prevent
this, setting the mac_managed_pm flag skips the mdio_bus_phy_resume()
function.
Fixes: a129b41fe0 ("Revert "net: phy: dp83867: perform soft reset and retain established link"")
Signed-off-by: Nick Hu <nick.hu@sifive.com>
Reviewed-by: Jacob Keller <jacob.e.keller@intel.com>
Link: https://patch.msgid.link/20250217055843.19799-1-nick.hu@sifive.com
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
priv->plat->fix_mac_speed() is called from stmmac_mac_link_up(), which
is passed the speed as an "int". However, fix_mac_speed() implicitly
casts this to an unsigned int. Some platform glue code print this value
using %u, others with %d. Some implicitly cast it back to an int, and
others to u32.
Good practice is to use one type and only one type to represent a value
being passed around a driver.
Switch all of these over to consistently use "int" when dealing with a
speed passed from stmmac_mac_link_up(), even though the speed will
always be positive.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Acked-by: Chen-Yu Tsai <wens@csie.org>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Link: https://patch.msgid.link/E1tkKmN-004ObM-Ge@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
priv->flow_ctrl is only accessed by stmmac_main.c, and the only place
that it is read is in stmmac_mac_flow_ctrl(). This function is only
called from stmmac_mac_link_up() which always sets priv->flow_ctrl
immediately before calling this function.
Therefore, initialising this at probe time is ineffectual because it
will always be overwritten before it's read. As such, the "flow_ctrl"
module parameter has been useless for some time. Rather than remove
the module parameter, which would risk module load failure, change the
description to indicate that it is obsolete, and warn if it is set by
userspace.
Moreover, storing the value in the stmmac_priv has no benefit as it's
set and then immediately read stmmac_mac_flow_ctrl(). Instead, pass it
as a parameter to this function..
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Nobuhiro Iwamatsu <nobuhiro1.iwamatsu@toshiba.co.jp>
Link: https://patch.msgid.link/E1tkKmI-004ObG-DL@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
priv->pause corresponds with "pause_time" in the 802.3 specification,
and is also called "pause_time" in the various MAC backends. For
consistency, use the same name in the core stmmac code.
Clarify the units of the "pause" module parameter which sets up this
struct member to indicate that it's in units of the pause_quanta
defined by 802.3, which is 512 bit times.
Signed-off-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Reviewed-by: Mateusz Polchlopek <mateusz.polchlopek@intel.com>
Link: https://patch.msgid.link/E1tkKmD-004ObA-9K@rmk-PC.armlinux.org.uk
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add more logs to assist in debugging and monitoring
driver behaviour, making it easier to identify potential
issues during development and testing.
Signed-off-by: Erni Sri Satya Vennela <ernis@linux.microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Link: https://patch.msgid.link/1739842455-23899-1-git-send-email-ernis@linux.microsoft.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As explained in the previous patch, iterating for_each_netdev() and
gn->geneve_list during ->exit_batch_rtnl() could trigger ->dellink()
twice for the same device.
If CONFIG_DEBUG_LIST is enabled, we will see a list_del() corruption
splat in the 2nd call of geneve_dellink().
Let's remove for_each_netdev() in geneve_destroy_tunnels() and delegate
that part to default_device_exit_batch().
Fixes: 9593172d93 ("geneve: Fix use-after-free in geneve_find_dev().")
Signed-off-by: Kuniyuki Iwashima <kuniyu@amazon.com>
Link: https://patch.msgid.link/20250217203705.40342-3-kuniyu@amazon.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
BCM53101 is a ethernet switch, very similar to the BCM53115.
Enable support for it, in the existing b53 dsa driver.
Signed-off-by: Torben Nielsen <torben.nielsen@prevas.dk>
Signed-off-by: Claus Stovgaard <claus.stovgaard@prevas.dk>
Link: https://patch.msgid.link/20250217080503.1390282-1-claus.stovgaard@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Drop separate TX completion functions for SKB and XDP. To do that
use the SW_DATA mechanism to store ndev and skb/xdpf for TX packets.
Use BUILD_BUG_ON_MSG() to fail build if SW_DATA size exceeds whats
available. i.e. AM65_CPSW_NAV_SW_DATA_SIZE.
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
This allows us to re-use am65_cpsw_run_xdp() for zero copy
case. Add AM65_CPSW_XDP_TX case for successful XDP_TX so we don't
free the page while in flight.
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
In am65_cpsw_run_xdp() instead of goto followed by return, simply return.
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
am65_cpsw_run_xdp() can figure out the cpu id itself.
No need to pass it around 2 functions so drop it.
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The only difference between am65_cpsw_nuss_tx_compl_packets_2g() and
am65_cpsw_nuss_tx_compl_packets() is the usage of spin_lock() and
netdev_tx_completed_queue() + am65_cpsw_nuss_tx_wake at every packet
in the latter.
Insted of having 2 separate functions for TX completion, merge them
into one. This will reduce code duplication and make maintenance easier.
Signed-off-by: Roger Quadros <rogerq@kernel.org>
Reviewed-by: Simon Horman <horms@kernel.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
The rockchip_canfd driver doesn't make use of the TXE FIFO.
Although the comment states that the TXE FIFO is setup, it's actually
a setup of the RX FIFO. The regular setup of the RX FIFO follows.
Remove the duplicated setup of the RX FIFO.
Fixes: ff60bfbaf6 ("can: rockchip_canfd: add driver for Rockchip CAN-FD controller")
Signed-off-by: Robin van der Gracht <robin@protonic.nl>
Link: https://patch.msgid.link/20250219-rk3568-canfd-v1-1-453869358c72@pengutronix.de
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Add USB VID/PID for the CANnectivity USB to CAN adapter firmware.
Signed-off-by: Henrik Brix Andersen <henrik@brixandersen.dk>
Tested-by: Sean Nyekjaer <sean@geanix.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://patch.msgid.link/20250120133827.668977-1-henrik@brixandersen.dk
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Add device type data for S32G2/S32G3 SoC.
FlexCAN module from S32G2/S32G3 is similar with i.MX SoCs, but interrupt
management is different.
On S32G2/S32G3 SoC, there are separate interrupts for state change, bus
errors, Mailboxes 0-7 and Mailboxes 8-127 respectively.
In order to handle this FlexCAN hardware particularity, first reuse the
'FLEXCAN_QUIRK_NR_IRQ_3' quirk provided by mcf5441x's irq handling
support. Secondly, use the newly introduced
'FLEXCAN_QUIRK_SECONDARY_MB_IRQ' quirk which handles the case where two
separate mailbox ranges are controlled by independent hardware interrupt
lines.
Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com>
Link: https://patch.msgid.link/20250113120704.522307-4-ciprianmarian.costea@oss.nxp.com
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Introduce 'FLEXCAN_QUIRK_SECONDARY_MB_IRQ' quirk to handle a FlexCAN
hardware module integration particularity where two ranges of mailboxes
are controlled by separate hardware interrupt lines.
The same 'flexcan_irq' handler is used for both separate mailbox interrupt
lines, with no other changes.
Signed-off-by: Ciprian Marian Costea <ciprianmarian.costea@oss.nxp.com>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://patch.msgid.link/20250113120704.522307-3-ciprianmarian.costea@oss.nxp.com
[mkl: flexcan_open(): change order and free irq_secondary_mb first]
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Use syscon_regmap_lookup_by_phandle_args() which is a wrapper over
syscon_regmap_lookup_by_phandle() combined with getting the syscon
argument. Except simpler code this annotates within one line that given
phandle has arguments, so grepping for code would be easier.
There is also no real benefit in printing errors on missing syscon
argument, because this is done just too late: runtime check on
static/build-time data. Dtschema and Devicetree bindings offer the
static/build-time check for this already.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://patch.msgid.link/20250212-syscon-phandle-args-can-v2-4-ac9a1253396b@linaro.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
of_property_read_bool() should be used only on boolean properties.
Cc: Rob Herring <robh@kernel.org>
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://patch.msgid.link/20250212-syscon-phandle-args-can-v2-3-ac9a1253396b@linaro.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Use error handling block instead of open-coding it in one of probe
failure cases.
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://patch.msgid.link/20250212-syscon-phandle-args-can-v2-2-ac9a1253396b@linaro.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
Generic probe failure message is useless: does not give information what
failed and it duplicates messages provided by the core, e.g. from memory
allocation or platform_get_irq(). It also floods dmesg in case of
deferred probe, e.g. resulting from devm_clk_get().
Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
Reviewed-by: Vincent Mailhol <mailhol.vincent@wanadoo.fr>
Link: https://patch.msgid.link/20250212-syscon-phandle-args-can-v2-1-ac9a1253396b@linaro.org
Signed-off-by: Marc Kleine-Budde <mkl@pengutronix.de>
On Azure, increasing VF's gso/gro packet size to up-to GSO_MAX_SIZE
is not possible without allowing the same for netvsc NIC
(as the NICs are bonded together). For bonded NICs, the min of the max
aggregated pkt size of the members is propagated in the stack.
Therefore, we use netif_set_tso_max_size() to set max aggregated pkt size
to VF's packet size for netvsc too, when the data path is switched over
to the VF
Tested on azure env with Accelerated Networking enabled and disabled.
Signed-off-by: Shradha Gupta <shradhagupta@linux.microsoft.com>
Reviewed-by: Haiyang Zhang <haiyangz@microsoft.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Fix incorrect data offset read in the pd692x0_pi_get_pw_limit callback.
The issue was previously unnoticed as it was only used by the regulator
API and not thoroughly tested, since the PSE is mainly controlled via
ethtool.
The function became actively used by ethtool after commit 3e9dbfec49
("net: pse-pd: Split ethtool_get_status into multiple callbacks"),
which led to the discovery of this issue.
Fix it by using the correct data offset.
Fixes: a87e699c9d ("net: pse-pd: pd692x0: Enhance with new current limit and voltage read callbacks")
Signed-off-by: Kory Maincent <kory.maincent@bootlin.com>
Link: https://patch.msgid.link/20250217134812.1925345-1-kory.maincent@bootlin.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
As kernel test robot reported, the following warning occurs:
cocci warnings: (new ones prefixed by >>)
>> drivers/net/ethernet/stmicro/stmmac/dwmac1000_core.c:582:6-8: opportunity for str_enabled_disabled(on)
Replace ternary (condition ? "enabled" : "disabled") with
str_enabled_disabled() from string_choices.h to improve readability,
maintain uniform string usage, and reduce binary size through linker
deduplication.
Reviewed-by: Huacai Chen <chenhuacai@loongson.cn>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Signed-off-by: Yu-Chun Lin <eleanor15x@gmail.com>
Link: https://patch.msgid.link/20250217155833.3105775-1-eleanor15x@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Add EEE support to MediaTek SoC Ethernet. The register fields are
similar to the ones in MT7531, except that the LPI threshold is in
milliseconds.
Signed-off-by: Qingfang Deng <dqfext@gmail.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/20250217094022.1065436-1-dqfext@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
sparse warning:
sparse: symbol 'ugeth_mac_ops' was not declared. Should it be
static.
Add static to fix sparse warnings and add const. phylink_create() will
accept a const struct.
Reported-by: kernel test robot <lkp@intel.com>
Closes: https://lore.kernel.org/202502141128.9HfxcdIE-lkp@intel.com
Signed-off-by: Pei Xiao <xiaopei01@kylinos.cn>
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
After the last user has gone, we can remove the local advertisement
parameter from genphy_c45_eee_is_active.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/bd121330-9e28-4bc8-8422-794bd54d561f@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Now that disabled EEE modes are considered when populating
advertising_eee, we can use this bitmap here instead of reading
the PHY register.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/e57ed3d4-d0bc-4f91-83f6-8f48dfb6d7d7@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
advertising_eee is adjusted now whenever an EEE mode gets disabled.
Therefore we can remove the silent removal of disabled EEE modes here.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/e95b9dad-24a7-4e3e-9af9-6f0770cf1520@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
A PHY driver may populate eee_disabled_modes in its probe or get_features
callback, therefore filter the EEE advertisement read from the PHY.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
Link: https://patch.msgid.link/493f3e2e-9cfc-445d-adbe-58d9c117a489@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Realtek shadows standard c45 registers in VEND2 device register space.
Add defines for these VEND2 registers, based on the names of the
standard c45 registers.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/c90bdf76-f8b8-4d06-9656-7a52d5658ee6@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Before this patch the NETDEV_XDP_ACT_NDO_XMIT XDP feature flag is set by
default as part of driver initialization, and is never cleared. However,
this flag differs from others in that it is used as an indicator for
whether the driver is ready to perform the ndo_xdp_xmit operation as
part of an XDP_REDIRECT. Kernel helpers
xdp_features_(set|clear)_redirect_target exist to convey this meaning.
This patch ensures that the netdev is only reported as a redirect target
when XDP queues exist to forward traffic.
Fixes: 39a7f4aa3e ("gve: Add XDP REDIRECT support for GQI-QPL format")
Cc: stable@vger.kernel.org
Reviewed-by: Praveen Kaligineedi <pkaligineedi@google.com>
Reviewed-by: Jeroen de Borst <jeroendb@google.com>
Signed-off-by: Joshua Washington <joshwash@google.com>
Link: https://patch.msgid.link/20250214224417.1237818-1-joshwash@google.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Report standard statistics using the dedicated callbacks instead of
get_ethtool_stats.
OCTTX is split over two registers. Accumulating these registers
separately in gem_stats just means we need to combine them again later.
Instead, combine these stats before saving them, like is done for
ethtool_stats.
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20250214212703.2618652-3-sean.anderson@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Convert the existing get_stats implementation to get_stats64. Since we
now report 64-bit values, increase the counters to 64-bits as well.
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20250214212703.2618652-2-sean.anderson@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Implement byte queue limits to allow queueing disciplines to account for
packets enqueued in the ring buffers but not yet transmitted.
Signed-off-by: Sean Anderson <sean.anderson@linux.dev>
Link: https://patch.msgid.link/20250214211252.2615573-1-sean.anderson@linux.dev
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
C22 register space is mapped to 0xa400 in MMD VEND2 register space.
Add a helper to access mapped C22 registers.
Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Link: https://patch.msgid.link/6344277b-c5c7-449b-ac89-d5425306ca76@gmail.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Simple conversion to page pool. Preserve the current fragmentation
logic / page splitting. Each page starts with a single frag reference,
and then we bump that when attaching to skbs. This can likely be
optimized further.
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20250213010635.1354034-5-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
mlx4 doesn't support ndo_xdp_xmit / XDP_REDIRECT and wasn't
using page pool until now, so it could run XDP completions
in netpoll (NAPI budget == 0) just fine. Page pool has calling
context requirements, make sure we don't try to call it from
what is potentially HW IRQ context.
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20250213010635.1354034-3-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Create a pool per rx queue. Subsequent patches will make use of it.
Move fcs_del to a hole to make space for the pointer.
Per common "wisdom" base the page pool size on the ring size.
Note that the page pool cache size is in full pages, so just
round up the effective buffer size to pages.
Reviewed-by: Tariq Toukan <tariqt@nvidia.com>
Link: https://patch.msgid.link/20250213010635.1354034-2-kuba@kernel.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
Temperature sensor gets enabled for 88Q222X devices in
mv88q222x_config_init. Move enabling to mv88q2xxx_config_init because
all 88Q2XXX devices support the temperature sensor.
Signed-off-by: Dimitri Fedrau <dima.fedrau@gmail.com>
Tested-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
Order includes alphabetically.
Signed-off-by: Dimitri Fedrau <dima.fedrau@gmail.com>
Reviewed-by: Niklas Söderlund <niklas.soderlund+renesas@ragnatech.se>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
When a vxlan netdevice is brought up, if its default remote is a multicast
address, the device joins the indicated group.
Therefore when the multicast remote address changes, the device should
leave the current group and subscribe to the new one. Similarly when the
interface used for endpoint communication is changed in a situation when
multicast remote is configured. This is currently not done.
Both vxlan_igmp_join() and vxlan_igmp_leave() can however fail. So it is
possible that with such fix, the netdevice will end up in an inconsistent
situation where the old group is not joined anymore, but joining the new
group fails. Should we join the new group first, and leave the old one
second, we might end up in the opposite situation, where both groups are
joined. Undoing any of this during rollback is going to be similarly
problematic.
One solution would be to just forbid the change when the netdevice is up.
However in vnifilter mode, changing the group address is allowed, and these
problems are simply ignored (see vxlan_vni_update_group()):
# ip link add name br up type bridge vlan_filtering 1
# ip link add vx1 up master br type vxlan external vnifilter local 192.0.2.1 dev lo dstport 4789
# bridge vni add dev vx1 vni 200 group 224.0.0.1
# tcpdump -i lo &
# bridge vni add dev vx1 vni 200 group 224.0.0.2
18:55:46.523438 IP 0.0.0.0 > 224.0.0.22: igmp v3 report, 1 group record(s)
18:55:46.943447 IP 0.0.0.0 > 224.0.0.22: igmp v3 report, 1 group record(s)
# bridge vni
dev vni group/remote
vx1 200 224.0.0.2
Having two different modes of operation for conceptually the same interface
is silly, so in this patch, just do what the vnifilter code does and deal
with the errors by crossing fingers real hard.
The vnifilter code leaves old before joining new, and in case of join /
leave failures does not roll back the configuration changes that have
already been applied, but bails out of joining if it could not leave. Do
the same here: leave before join, apply changes unconditionally and do not
attempt to join if we couldn't leave.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
vxlan_dev_configure() only has a single caller that passes false
for the changelink parameter. Drop the parameter and inline the
sole value.
Signed-off-by: Petr Machata <petrm@nvidia.com>
Reviewed-by: Ido Schimmel <idosch@nvidia.com>
Reviewed-by: Nikolay Aleksandrov <razor@blackwall.org>
Signed-off-by: Paolo Abeni <pabeni@redhat.com>
