1122927 Commits

Author SHA1 Message Date
Sean Anderson
d0e17a4653 soc: fsl: qbman: Add helper for sanity checking cgr ops
This breaks out/combines get_affine_portal and the cgr sanity check in
preparation for the next commit. No functional change intended.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:27:39 +01:00
Sean Anderson
fca4804f68 net: dpaa: Use mac_dev variable in dpaa_netdev_init
There are several references to mac_dev in dpaa_netdev_init. Make things a
bit more concise by adding a local variable for it.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:27:39 +01:00
Sean Anderson
901bdff2f5 net: fman: Change return type of disable to void
When disabling, there is nothing we can do about errors. In fact, the
only error which can occur is misuse of the API. Just warn in the mac
driver instead.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:27:39 +01:00
Sean Anderson
aedbeb4e59 net: fman: Clean up error handling
This removes the _return label, since something like

	err = -EFOO;
	goto _return;

can be replaced by the briefer

	return -EFOO;

Additionally, this skips going to _return_of_node_put when dev_node has
already been put (preventing a double put).

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:27:39 +01:00
Sean Anderson
5b6acb5540 net: fman: Specify type of mac_dev for exception_cb
Instead of using a void pointer for mac_dev, specify its type
explicitly.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:27:39 +01:00
Sean Anderson
19c788b144 net: fman: Use mac_dev for some params
Some params are already present in mac_dev. Use them directly instead of
passing them through params.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:27:39 +01:00
Sean Anderson
c6b7b1b515 net: fman: Pass params directly to mac init
Instead of having the mac init functions call back into the fman core to
get their params, just pass them directly to the init functions.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:27:39 +01:00
Sean Anderson
262f2b782e net: fman: Map the base address once
We don't need to remap the base address from the resource twice (once in
mac_probe() and again in set_fman_mac_params()). We still need the
resource to get the end address, but we can use a single function call
to get both at once.

While we're at it, use platform_get_mem_or_io and devm_request_resource
to map the resource. I think this is the more "correct" way to do things
here, since we use the pdev resource, instead of creating a new one.
It's still a bit tricky, since we need to ensure that the resource is a
child of the fman region when it gets requested.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:27:39 +01:00
Sean Anderson
45fa34bfaa net: fman: Remove internal_phy_node from params
This member was used to pass the phy node between mac_probe and the
mac-specific initialization function. But now that the phy node is
gotten in the initialization function, this parameter does not serve a
purpose. Remove it, and do the grabbing of the node/grabbing of the phy
in the same place.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:27:39 +01:00
Sean Anderson
4498862710 net: fman: Inline several functions into initialization
There are several small functions which were only necessary because the
initialization functions didn't have access to the mac private data. Now
that they do, just do things directly.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:27:39 +01:00
Sean Anderson
1257c9623d net: fman: Mark mac methods static
These methods are no longer accessed outside of the driver file, so mark
them as static.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:27:39 +01:00
Sean Anderson
302376feec net: fman: Move initialization to mac-specific files
This moves mac-specific initialization to mac-specific files. This will
make it easier to work with individual macs. It will also make it easier
to refactor the initialization to simplify the control flow. No
functional change intended.

Signed-off-by: Sean Anderson <sean.anderson@seco.com>
Acked-by: Camelia Groza <camelia.groza@nxp.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:27:38 +01:00
Heiner Kallweit
36f9b47457 r8169: remove useless PCI region size check
Let's trust the hardware here and remove this useless check.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 14:26:41 +01:00
David S. Miller
5f3c519347 Merge branch 'lan937x-phy-link-interrupt'
Arun Ramadoss says:

====================
net: dsa: microchip: lan937x: enable interrupt for internal phy link detection

This patch series enables the internal phy link detection for lan937x using the
interrupt method. lan937x acts as the interrupt controller for the internal
ports and phy, the irq_domain is registered for the individual ports and in
turn for the individual port interrupts.

RFC v3 -> Patch v1
- Removed the RFC v3 1/3 from the series - changing exit from reset
- Changed the variable name in ksz_port from irq to pirq
- Added the check for return value of irq_find_mapping during phy irq
  registeration.
- Moved the clearing of POR_READY_INT from girq_thread_fn to
  lan937x_reset_switch

RFC v2 -> v3
- Used the interrupt controller implementation of phy link

Changes in RFC v2
- fixed the compilation issue
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 13:06:40 +01:00
Arun Ramadoss
c9cd961c0d net: dsa: microchip: lan937x: add interrupt support for port phy link
This patch enables the interrupts for internal phy link detection for
LAN937x. The interrupt enable bits are active low. There is global
interrupt mask for each port. And each port has the individual interrupt
mask for TAS. QCI, SGMII, PTP, PHY and ACL.
The first level of interrupt domain is registered for global port
interrupt and second level of interrupt domain for the individual port
interrupts. The phy interrupt is enabled in the lan937x_mdio_register
function. Interrupt from which port is raised will be detected based on
the interrupt host data.

Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 13:06:40 +01:00
Arun Ramadoss
f313936261 net: dsa: microchip: lan937x: clear the POR_READY_INT status bit
In the lan937x_reset_switch(), it masks all the switch and port
registers. In the Global_Int_status register, POR ready bit is write 1
to clear bit and all other bits are read only. So, this patch clear the
por_ready_int status bit by writing 1.

Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 13:06:40 +01:00
Arun Ramadoss
f3c165459c net: dsa: microchip: add reference to ksz_device inside the ksz_port
struct ksz_port doesn't have reference to ksz_device as of now. In order
to find out from which port interrupt has triggered, we need to pass the
struct ksz_port as a host data. When the interrupt is triggered, we can
get the port from which interrupt triggered, but to identify it is phy
interrupt we have to read status register. The regmap structure for
accessing the device register is present in the ksz_device struct. To
access the ksz_device from the ksz_port, the reference is added to it
with port number as well.

Signed-off-by: Arun Ramadoss <arun.ramadoss@microchip.com>
Reviewed-by: Andrew Lunn <andrew@lunn.ch>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 13:06:39 +01:00
David S. Miller
6630edabd8 Merge branch 'ipa-transaction-IDs'
Alex Elder says:

====================
net: ipa: start using transaction IDs

A previous group of patches added ID fields to track the state of
transactions:
  https://lore.kernel.org/netdev/20220831224017.377745-1-elder@linaro.org

This series starts using those IDs instead of the lists used
previously.  Most of this series involves reworking the function
that determines which transaction is the "last", which determines
when a channel has been quiesed.  The last patch is mainly used to
prove that the new index method of tracking transaction state is
equivalent to the previous use of lists.
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 12:47:02 +01:00
Alex Elder
8672bab7eb net: ipa: verify a few more IDs
The completed transaction list is used in gsi_channel_trans_complete()
to return the next transaction in completed state.

Add some temporary checks to verify the transaction indicated by the
completed ID matches the one first in this list.

Similarly, we use the pending and completed transaction lists when
cancelling pending transactions in gsi_channel_trans_cancel_pending().

Add temporary checks there to verify the transactions indicated by
IDs match those tracked by these lists.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 12:47:02 +01:00
Alex Elder
4601e75596 net: ipa: further simplify gsi_channel_trans_last()
Do a little more refactoring in gsi_channel_trans_last() to simplify
it further.  The resulting code should behave exactly as before.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 12:47:02 +01:00
Alex Elder
e68d1d1591 net: ipa: simplify gsi_channel_trans_last()
Using a little logic we can simplify gsi_channel_trans_last().

The first condition in that function looks like this:
    if (trans_info->allocated_id != trans_info->free_id)
And if that's false, we proceed to the next one:
    if (trans_info->committed_id != trans_info->allocated_id)

Failure of the first test implies:
    trans_info->allocated_id == trans_info->free_id
And therefore, the second one can be rewritten this way:
    if (trans_info->committed_id != trans_info->free_id)

Substituting free_id for allocated_id and committed_id can also be
done in the code blocks executed when these conditions yield true.
The net result is that all three blocks for TX endpoints can be
consolidated into just one.

The two blocks of code at the end of that function (used for both TX
and RX channels) can be similarly consolidated into a single block.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 12:47:02 +01:00
Alex Elder
897c0ce665 net: ipa: use IDs exclusively for last transaction
Always use transaction IDs when finding the "last" transaction to
await when quiescing a channel.  This basically extends what was
done in the previous patch to all other transaction state IDs.

As a result we are no longer updating any transaction lists inside
gsi_channel_trans_last(), so there's no need to take the spinlock.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 12:47:01 +01:00
Alex Elder
c30623ea0b net: ipa: use IDs for last allocated transaction
Use the allocated and free transaction IDs to determine whether the
"last" transaction used for quiescing a channel is in allocated
state.  The last allocated transaction that has not been committed
(if any) immediately precedes the first free transaction in the
transaction array.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 12:47:01 +01:00
Alex Elder
b2abe33d23 net: ipa: rework last transaction determination
When quiescing a channel, we find the "last" transaction, which is
the latest one to have been allocated.  (New transaction allocation
will have been prevented by the time this is called.)

Currently we do this by looking for the first non-empty transaction
list in each state, then return the last entry from that last.
Instead, determine the last entry in each list (if any) and return
that entry if found.

Temporarily (locally) introduce list_last_entry_or_null() as a
helper for this, mirroring list_first_entry_or_null().  This macro
definition will be removed by an upcoming patch.

Remove the temporary warnings added by the previous commit.

Signed-off-by: Alex Elder <elder@linaro.org>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 12:47:01 +01:00
Heiner Kallweit
599566c1c3 r8169: use devm_clk_get_optional_enabled() to simplify the code
Now that we have devm_clk_get_optional_enabled(), we don't have to
open-code it.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 12:41:13 +01:00
Heiner Kallweit
baa71622cf r8169: remove comment about apparently non-existing chip versions
It's not clear where these entries came from, and as I wrote in the
comment: Not even Realtek's r8101 driver knows these chip id's.
So remove the comment.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 12:41:13 +01:00
Heiner Kallweit
7e04a111cd r8169: merge handling of chip versions 12 and 17 (RTL8168B)
It's not clear why XID's 380 and 381..387 ever got different chip
version id's. VER_12 and VER_17 are handled exactly the same.
Therefore merge handling under the VER_17 umbrella.

Signed-off-by: Heiner Kallweit <hkallweit1@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 12:41:13 +01:00
David S. Miller
7752422f50 Merge branch 'altera-tse-phylink'
Maxime Chevallier says:

====================
net: altera: tse: phylink conversion

This is V4 of a series converting the Altera TSE driver to phylink,
introducing a new PCS driver along the way.

The Altera TSE can be built with a SGMII/1000BaseX PCS, allowing to use
SFP ports with this MAC, which is the end goal of adding phylink support
and a proper PCS driver.

The PCS itself can either be mapped in the MAC's register space, in that
case, it's accessed through 32 bits registers, with the higher 16 bits
always 0. Alternatively, it can sit on its own register space, exposing
16 bits registers, some of which ressemble the standard PHY registers.

To tackle that rework, several things needs updating, starting by the DT
binding, since we add support for a new register range for the PCS.

Hence, the first patch of the series is a conversion to YAML of the
existing binding.

Then, patch 2 does a bit of simple cleanup to the TSE driver, using nice
reverse xmas tree definitions.

Patch 3 adds the actual PCS driver, as a standalone driver. Some future
series will then reuse that PCS driver from the dwmac-socfpga driver,
which implements support for this exact PCS too, allowing to share the
code nicely.

Patch 4 is then a phylink conversion of the altera_tse driver, to use
this new PCS driver.

Finally, patch 5 updates the newly converted DT binding to support the
pcs register range.

This series contains bits and pieces for this conversion, please tell me if
you want me to send it as individual patches.

V4 Changes:
 - Add missing MODULE_* macros to the TSE PCS driver

V3 Changes:
 - YAML binding conversion changes and PCS addition changes thanks to
   Krzysztof's reviews

V2 Changes :
 - Fixed the binding after the YAML conversion
 - Added a pcs_validate() callback
 - Introduced a comment to justify a soft reset for the PCS
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 10:16:53 +01:00
Maxime Chevallier
565f02fc1e dt-bindings: net: altera: tse: add an optional pcs register range
Some implementations of the TSE have their PCS as an external bloc,
exposed at its own register range. Document this, and add a new example
showing a case using the pcs and the new phylink conversion to connect
an sfp port to a TSE mac.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 10:16:53 +01:00
Maxime Chevallier
fef2998203 net: altera: tse: convert to phylink
Convert the Altera Triple Speed Ethernet Controller to phylink.
This controller supports MII, GMII and RGMII with its MAC, and
SGMII + 1000BaseX through a small embedded PCS.

The PCS itself has a register set very similar to what is found in a
typical 802.3 ethernet PHY, but this register set memory-mapped instead
of lying on an mdio bus.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 10:16:53 +01:00
Maxime Chevallier
4a502cf4d7 net: pcs: add new PCS driver for altera TSE PCS
The Altera Triple Speed Ethernet has a SGMII/1000BaseC PCS that can be
integrated in several ways. It can either be part of the TSE MAC's
address space, accessed through 32 bits accesses on the mapped mdio
device 0, or through a dedicated 16 bits register set.

This driver allows using the TSE PCS outside of altera TSE's driver,
since it can be used standalone by other MACs.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 10:16:53 +01:00
Maxime Chevallier
5adb0ed045 net: altera: tse: cosmetic change to use reverse xmas tree ordering
Make the driver code cleaner through a strictly cosmetic change, using
he reverse xmas tree variable declaration ordering.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 10:16:53 +01:00
Maxime Chevallier
b0155d9096 dt-bindings: net: Convert Altera TSE bindings to yaml
Convert the bindings for the Altera Triple-Speed Ethernet to yaml.

Signed-off-by: Maxime Chevallier <maxime.chevallier@bootlin.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-05 10:16:52 +01:00
David S. Miller
9837ec955b drivers
- rtw89: large update across the map, e.g. coex, pci(e), etc.
  - ath9k: uninit memory read fix
  - ath10k: small peer map fix and a WCN3990 device fix
  - wfx: underflow
 
 stack
  - the "change MAC address while IFF_UP" change from James
    we discussed
  - more MLO work, including a set of fixes for the previous
    code, now that we have more code we can exercise it more
  - prevent some features with MLO that aren't ready yet
    (AP_VLAN and 4-address connections)
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Merge tag 'wireless-next-2022-09-03' of git://git.kernel.org/pub/scm/linux/kernel/git/wireless/wireless-next

Johannes Berg says:

====================
drivers
 - rtw89: large update across the map, e.g. coex, pci(e), etc.
 - ath9k: uninit memory read fix
 - ath10k: small peer map fix and a WCN3990 device fix
 - wfx: underflow

stack
 - the "change MAC address while IFF_UP" change from James
   we discussed
 - more MLO work, including a set of fixes for the previous
   code, now that we have more code we can exercise it more
 - prevent some features with MLO that aren't ready yet
   (AP_VLAN and 4-address connections)
====================

Signed-off-by: David S. Miller <davem@davemloft.net>
2022-09-04 11:24:34 +01:00
Johannes Berg
c087f9fcd0 wifi: mac80211_hwsim: fix multi-channel handling in netlink RX
In netlink RX, now that we can actually have multiple
channel contexts for MLO, things don't work well as we
only keep a single pointer, and then on link switching
we might NULL it, and hit the return if the channel is
NULL.

However, we already use mac80211_hwsim_tx_iter() which
deals with all this, so remove the test and adjust the
remaining code a bit.

This then means we no longer use the chanctx pointer,
so remove it as well.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:05:44 +02:00
Johannes Berg
48c5d82aba wifi: mac80211: call drv_sta_state() under sdata_lock() in reconfig
Currently, other paths calling drv_sta_state() hold the mutex
and therefore drivers can assume that, and look at links with
that protection. Fix that for the reconfig path as well; to
do it more easily use ieee80211_reconfig_stations() for the
AP/AP_VLAN station reconfig as well.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:04:51 +02:00
Johannes Berg
6522047c65 wifi: nl80211: add MLD address to assoc BSS entries
Add an MLD address attribute to BSS entries that the interface
is currently associated with to help userspace figure out what's
going on.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:04:29 +02:00
Johannes Berg
7e415d0c8c wifi: mac80211: mlme: refactor QoS settings code
Refactor the code to apply QoS settings to the driver so
we can call it on link switch.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:04:15 +02:00
Johannes Berg
419bd7a7aa wifi: mac80211_hwsim: warn on invalid link address
Catch the bugs fixed in mac80211 by the previous commits
and warn if an invalid address is added (or removed).

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:03:39 +02:00
Johannes Berg
a033afca2d wifi: mac80211: fix double SW scan stop
When we stop a not-yet-started scan, we erroneously call
into the driver, causing a sequence of sw_scan_start()
followed by sw_scan_complete() twice. This will cause a
warning in hwsim with next in line commit that validates
the address passed to wmediumd/virtio. Fix this by doing
the calls only if we were actually scanning.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:03:29 +02:00
Johannes Berg
acdc3e4788 wifi: mac80211: mlme: assign link address correctly
Right now, we assign the link address only after we add
the link to the driver, which is quite obviously wrong.
It happens to work in many cases because it gets updated
immediately, and then link_conf updates may update it,
but it's clearly not really right.

Set the link address during ieee80211_mgd_setup_link()
so it's set before telling the driver about the link.

Fixes: 81151ce462e5 ("wifi: mac80211: support MLO authentication/association with one link")
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:02:34 +02:00
Johannes Berg
e73b5e51a0 wifi: mac80211: move link code to a new file
We probably should've done that originally, we already have
about 300 lines of code there, and will add more. Move all
the link code we wrote to a new file.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:02:25 +02:00
Johannes Berg
b1622adaa5 wifi: mac80211_hwsim: refactor RX a bit
Refactor some common RX functionality between the netlink
and non-netlink paths, adding the special hwsim TLV (if
compiled) also in the netlink path.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:02:15 +02:00
Johannes Berg
b2c4aa35eb wifi: mac80211_hwsim: check STA magic in change_sta_links
Just as an additional check that mac80211 isn't doing
anything strange, add a check of the STA magic (which
gets assigned when the station is added, and cleared
when the station is removed).

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:02:05 +02:00
Johannes Berg
774e00c20c wifi: mac80211: remove unused arg to ieee80211_chandef_eht_oper
We don't need the sdata argument, and it doesn't make any
sense for a direct conversion from one value to another,
so just remove the argument

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:01:56 +02:00
Johannes Berg
86e74a08fe wifi: mac80211_hwsim: remove multicast workaround
Now that we have proper multicast TX in mac80211, there's
no longer a need to fake something here.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:01:37 +02:00
Jinpeng Cui
a21cd7d63b wifi: nl80211: remove redundant err variable
Return value from rdev_set_mcast_rate() directly instead of
taking this in another redundant variable.

Reported-by: Zeal Robot <zealci@zte.com.cn>
Signed-off-by: Jinpeng Cui <cui.jinpeng2@zte.com.cn>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:01:09 +02:00
James Prestwood
3c06e91b40 wifi: mac80211: Support POWERED_ADDR_CHANGE feature
Adds support in mac80211 for NL80211_EXT_FEATURE_POWERED_ADDR_CHANGE.
The motivation behind this functionality is to fix limitations of
address randomization on frequencies which are disallowed in world
roaming.

The way things work now, if a client wants to randomize their address
per-connection it must power down the device, change the MAC, and
power back up. Here lies a problem since powering down the device
may result in frequencies being disabled (until the regdom is set).
If the desired BSS is on one such frequency the client is unable to
connect once the phy is powered again.

For mac80211 based devices changing the MAC while powered is possible
but currently disallowed (-EBUSY). This patch adds some logic to
allow a MAC change while powered by removing the interface, changing
the MAC, and adding it again. mac80211 will advertise support for
this feature so userspace can determine the best course of action e.g.
disallow address randomization on certain frequencies if not
supported.

There are certain limitations put on this which simplify the logic:
 - No active connection
 - No offchannel work, including scanning.

Signed-off-by: James Prestwood <prestwoj@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 17:01:04 +02:00
James Prestwood
a36c421690 wifi: nl80211: Add POWERED_ADDR_CHANGE feature
Add a new extended feature bit signifying that the wireless hardware
supports changing the MAC address while the underlying net_device is
powered. Note that this has a different meaning from
IFF_LIVE_ADDR_CHANGE as additional restrictions might be imposed by
the hardware, such as:

 - No connection is active on this interface, carrier is off
 - No scan is in progress
 - No offchannel operations are in progress

Signed-off-by: James Prestwood <prestwoj@gmail.com>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 16:58:41 +02:00
Johannes Berg
90703ba9bb wifi: mac80211: prevent 4-addr use on MLDs
We haven't tried this yet, and it's not very likely to
work well right now, so for now disable 4-addr use on
interfaces that are MLDs.

Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Link: https://lore.kernel.org/r/20220902161143.f2e4cc2efaa1.I5924e8fb44a2d098b676f5711b36bbc1b1bd68e2@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
2022-09-03 16:57:34 +02:00