linux.git/net/wireless/trace.h, branch v6.17

wifi: cfg80211/mac80211: report link ID for unexpected frames

2025-07-21T17:40:59+00:00

The upper layer may require the link ID to properly handle
unexpected frames. For instance, if hostapd, operating as an
AP MLD, receives a data frame from a non-associated STA,
it must send deauthentication to the link on which the STA is
operating.

Signed-off-by: Michael-CY Lee 
Reviewed-by: Money Wang 
Link: https://patch.msgid.link/20250721065159.1740992-1-michael-cy.lee@mediatek.com
[edit commit message]
Signed-off-by: Johannes Berg

wifi: cfg80211: hide scan internals

2025-07-09T09:52:35+00:00

Hide the internal scan fields from mac80211 and drivers, the
'notified' variable is for internal tracking, and the 'info'
is output that's passed to cfg80211_scan_done() and stored
only for delayed userspace notification.

Signed-off-by: Johannes Berg 
Reviewed-by: Benjamin Berg 
Signed-off-by: Miri Korenblit 
Link: https://patch.msgid.link/20250609213231.6a62e41858e2.I004f66e9c087cc6e6ae4a24951cf470961ee9466@changeid
Signed-off-by: Johannes Berg

wifi: cfg80211/mac80211: Add support to get radio index

2025-06-24T13:19:27+00:00

Currently, per-radio attributes are set on per-phy basis, i.e., all the
radios present in a wiphy will take attributes values sent from user. But
each radio in a wiphy can get different values from userspace based on
its requirement.

To extend support to set per-radio attributes, add support to get radio
index from userspace. Add an NL attribute - NL80211_ATTR_WIPHY_RADIO_INDEX,
to get user specified radio index for which attributes should be changed.
Pass this to individual drivers, so that the drivers can use this radio
index to change per-radio attributes when necessary. Currently, per-radio
attributes identified are:
NL80211_ATTR_WIPHY_TX_POWER_LEVEL
NL80211_ATTR_WIPHY_ANTENNA_TX
NL80211_ATTR_WIPHY_ANTENNA_RX
NL80211_ATTR_WIPHY_RETRY_SHORT
NL80211_ATTR_WIPHY_RETRY_LONG
NL80211_ATTR_WIPHY_FRAG_THRESHOLD
NL80211_ATTR_WIPHY_RTS_THRESHOLD
NL80211_ATTR_WIPHY_COVERAGE_CLASS
NL80211_ATTR_TXQ_LIMIT
NL80211_ATTR_TXQ_MEMORY_LIMIT
NL80211_ATTR_TXQ_QUANTUM

By default, the radio index is set to -1. This means the attribute should
be treated as a global configuration. If the user has not specified any
index, then the radio index passed to individual drivers would be -1. This
would indicate that the attribute applies to all radios in that wiphy.

Signed-off-by: Roopni Devanathan 
Link: https://patch.msgid.link/20250615082312.619639-2-quic_rdevanat@quicinc.com
Signed-off-by: Johannes Berg

wifi: cfg80211: Add support for link reconfiguration negotiation offload to driver

2025-06-20T08:46:31+00:00

In the case of SME-in-driver, the driver can internally choose to
update the links based on the AP MLD recommendation and do link
reconfiguration negotiation with AP MLD.
(e.g., After the driver processing the BSS Transition Management request
frame received from the AP MLD with Neighbor Report containing
Multi-Link element with recommended links information chooses to do link
reconfiguration negotiation with AP MLD).

To support this, extend cfg80211_mlo_reconf_add_done() and
NL80211_CMD_ASSOC_MLO_RECONF to indicate added links information for
driver-initiated link reconfiguration requests. For removed links,
the driver indicates links information using the
NL80211_CMD_LINKS_REMOVED event for driver-initiated cases, the same as
supplicant initiated cases.

For the driver-initiated case, cfg80211 will receive link
reconfiguration result asynchronously from driver so holding BSSes of
the accepted add links is needed in the event path. Also, no need of
unhold call for the rejected add link BSSes since there was no hold call
happened previously.

Once the supplicant receives the NL80211_CMD_ASSOC_MLO_RECONF event,
it needs to process the information about newly added links and install
per-link group keys (e.g., GTK/IGTK/BIGTK etc.).

In case of the SME-in-driver, using a vendor interface etc. to notify
the supplicant to initiate a link reconfiguration request and then
supplicant sending command to the cfg80211 can lead to race conditions.
The correct design to avoid this is that the driver indicates the
cfg80211 directly with the results of the link reconfiguration
negotiation.

Signed-off-by: Kavita Kavita 
Link: https://patch.msgid.link/20250604105757.2542-3-quic_kkavita@quicinc.com
Signed-off-by: Johannes Berg

wifi: cfg80211: allow setting extended MLD capa/ops

2025-03-11T09:51:59+00:00

Some extended MLD capabilities and operations bits (currently
the "BTM MLD Recommendataion For Multiple APs Support" bit)
may depend on userspace capabilities. Allow userspace to pass
the values for this field that it supports to the association
and link reconfiguration operations.

Signed-off-by: Johannes Berg 
Reviewed-by: Ilan Peer 
Link: https://patch.msgid.link/20250308225541.bd52078b5f65.I4dd8f53b0030db7ea87a2e0920989e7e2c7b5345@changeid
Signed-off-by: Johannes Berg

wifi: cfg80211: move link reconfig parameters into a struct

2025-03-11T09:51:58+00:00

Add a new struct cfg80211_ml_reconf_req to collect the link
reconfiguration parameters.

Signed-off-by: Johannes Berg 
Signed-off-by: Miri Korenblit 
Link: https://patch.msgid.link/20250308225541.0cf299c1fdd0.Id1a3b1092dc52d0d3731a8798522fdf2e052bf0b@changeid
Signed-off-by: Johannes Berg

wifi: cfg80211: Fix trace print for removed links

2025-02-11T10:59:05+00:00

Print the mask of removed links in hexadecimal.

Signed-off-by: Ilan Peer 
Reviewed-by: Johannes Berg 
Signed-off-by: Miri Korenblit 
Link: https://patch.msgid.link/20250205110958.1dd2831cab5f.Ib9f5e82286f0352cd057b4bf76737223e9de8274@changeid
Signed-off-by: Johannes Berg

wifi: cfg80211: Add support for controlling EPCS

2025-01-13T14:34:09+00:00

Add support for configuring Emergency Preparedness Communication
Services (EPCS) for station mode.

Signed-off-by: Ilan Peer 
Reviewed-by: Johannes Berg 
Signed-off-by: Miri Korenblit 
Link: https://patch.msgid.link/20250102161730.ea54ac94445c.I11d750188bc0871e13e86146a3b5cc048d853e69@changeid
Signed-off-by: Johannes Berg

wifi: cfg80211: Add support for dynamic addition/removal of links

2025-01-13T14:34:08+00:00

Add support for requesting dynamic addition/removal of links to the
current MLO association.

Signed-off-by: Ilan Peer 
Signed-off-by: Miri Korenblit 
Link: https://patch.msgid.link/20250102161730.cef23352f2a2.I79c849974c494cb1cbf9e1b22a5d2d37395ff5ac@changeid
Signed-off-by: Johannes Berg

wifi: cfg80211: send MLO links tx power info in GET_INTERFACE

2024-12-04T15:14:46+00:00

Currently, TX power is reported on interface/wdev level as
part of NL80211_CMD_GET_INTERFACE. With MLO, Multiple links
can be part of an interface/wdev and hence its necessary to
report the TX power of each link.

Add support to send tx power for all valid links of an MLD as
part of NL80211_CMD_GET_INTERFACE request.

As far as userspace is concerned, there is no behavioral change
for Non-ML Interfaces. For ML interfaces, userspace should fetch
TX power that is nested inside NL80211_ATTR_MLO_LINKS, similar to
how channel info(NL80211_ATTR_WIPHY_FREQ) is fetched.

Co-developed-by: Aaradhana Sahu 
Signed-off-by: Aaradhana Sahu 
Signed-off-by: Rameshkumar Sundaram 
Link: https://patch.msgid.link/20241125083217.216095-2-quic_ramess@quicinc.com
Signed-off-by: Johannes Berg