kernel/linux.git/net/mac80211/trace.h, branch v7.1

wifi: mac80211: add NAN peer schedule support

2026-04-07T13:36:03+00:00

Peer schedules specify which channels the peer is available on and when. Add support for configuring peer NAN schedules: - build and store the schedule and maps - for each channel, make sure that it fits into the capabilities, and take the minimum between it and the local compatible nan channel. - configure the driver Note that the removal of a peer schedule should be done by the driver upon NMI station removal. Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20260326121156.185ff2283fa6.I0345eb665be8ccf4a77eb1aca9a421eb8d2432e2@changeid Signed-off-by: Johannes Berg

wifi: mac80211: Replace strncpy() with strscpy_pad() in drv_switch_vif_chanctx tracepoint

2026-03-24T15:29:32+00:00

Replace the deprecated[1] strncpy() with strscpy_pad() for copying the interface name into a tracepoint entry. The source "sdata->name" is a NUL-terminated char[IFNAMSIZ] buffer populated via NUL-guaranteeing paths: strscpy() in ieee80211_if_add(), snprintf() in ieee80211_add_virtual_monitor(), or memcpy() from ndev->name in ieee80211_if_add() and netdev_notify() (net/mac80211/iface.c). In the memcpy() cases, the source ndev->name is itself always NUL-terminated (populated via snprintf() or strscpy() in __dev_alloc_name() and dev_prep_valid_name() in net/core/dev.c). The destination "local_vifs[i].vif.vif_name" is a char[IFNAMSIZ] field in struct trace_vif_entry, stored in a __dynamic_array within the trace ring buffer. Since ring buffer entries are not zeroed on allocation, strscpy_pad() is used to zero-fill trailing bytes and prevent exposing stale ring buffer contents to userspace readers of tracefs. No behavioral change: since interface names are always at most 15 characters plus a NUL terminator, strscpy_pad() with size IFNAMSIZ (16) produces identical output to the original strncpy(). Link: https://github.com/KSPP/linux/issues/90 [1] Signed-off-by: Kees Cook Link: https://patch.msgid.link/20260323172015.work.146-kees@kernel.org Signed-off-by: Johannes Berg

wifi: mac80211: refactor chandef tracing macros

2026-03-13T06:11:14+00:00

We don't need to duplicate the macros, just make a generic one that gets the name prefix to be used, and use that to create the others. While at it, add the puncturing bitmap to the trace and simplify the ternary expressions. Reviewed-by: Miriam Rachel Korenblit Link: https://patch.msgid.link/20260303152641.ca32d70055f8.I8138a31ceb75715d928d807554288baccc33cd8c@changeid Signed-off-by: Johannes Berg

wifi: mac80211: Add eMLSR/eMLMR action frame parsing support

2026-02-02T09:11:18+00:00

Introduce support in AP mode for parsing of the Operating Mode Notification frame sent by the client to enable/disable MLO eMLSR or eMLMR if supported by both the AP and the client. Add drv_set_eml_op_mode mac80211 callback in order to configure underlay driver with eMLSR/eMLMR info. Tested-by: Christian Marangi Signed-off-by: Lorenzo Bianconi Link: https://patch.msgid.link/20260129-mac80211-emlsr-v4-1-14bdadf57380@kernel.org 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: mac80211: add link_sta_statistics ops to fill link station statistics

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

Currently, link station statistics for MLO are filled by mac80211. But there are some statistics that kept by mac80211 might not be accurate, so let the driver pre-fill the link statistics. The driver can fill the values (indicating which field is filled, by setting the filled bitmapin in link_station structure). Statistics that driver don't fill are filled by mac80211. Hence, add link_sta_statistics callback to fill link station statistics for MLO in sta_set_link_sinfo() by drivers. Signed-off-by: Sarika Sharma Link: https://patch.msgid.link/20250528054420.3050133-11-quic_sarishar@quicinc.com Signed-off-by: Johannes Berg

wifi: mac80211: improve stop/wake queue tracing

2025-01-13T14:26:44+00:00

Add the refcount. This can be useful when we want to understand why a queue stays stopped after it is woken. Signed-off-by: Emmanuel Grumbach Reviewed-by: Johannes Berg Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20250101070249.bd320c6e6702.I6ae0f19d922aea1f28236d72bf260acac428fc02@changeid Signed-off-by: Johannes Berg

wifi: mac80211: add some support for RX OMI power saving

2025-01-13T14:26:43+00:00

In order to save power, it can be desirable to change the RX operating mode using OMI to reduce the bandwidth. As the handshake must be done in the HTC+ field, it cannot be done by mac80211 directly, so expose functions to the driver to request and finalize the necessary updates. Note that RX OMI really only changes what the peer (AP) will transmit to us, but in order to use it to actually save some power (by reducing the listen bandwidth) we also update rate scaling and then the channel context's mindef accordingly. The updates are split into two in order to sequence them correctly, when reducing bandwidth first reduce the rate scaling and thus TX, then send OMI, then reduce the listen bandwidth (chandef); when increasing bandwidth this is the other way around. This also requires tracking in different variables which part is applicable already. Signed-off-by: Johannes Berg Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20250101070249.2c1a1934bd73.I4e90fd503504e37f9eac5bdae62e3f07e7071275@changeid Signed-off-by: Johannes Berg

wifi: mac80211: get tx power per link

2024-12-04T15:17:40+00:00

ML interfaces can have multiple affiliated links to it and hence there is a need to report tx power of specified link rather deflink. Add changes to report tx power of requested link from mac80211, also pass link id as an argument in get_tx_power op so that supported drivers can use it to report link's tx power. Co-developed-by: Aaradhana Sahu Signed-off-by: Aaradhana Sahu Signed-off-by: Rameshkumar Sundaram Link: https://patch.msgid.link/20241125083217.216095-3-quic_ramess@quicinc.com Signed-off-by: Johannes Berg

wifi: mac80211: call rate_control_rate_update() for link STA

2024-10-23T14:43:27+00:00

In order to update the right link information, call the update rate_control_rate_update() with the right link_sta, and then pass that through to the driver's sta_rc_update() method. The software rate control still doesn't support it, but that'll be skipped by not having a rate control ref. Since it now operates on a link sta, rename the driver method. Signed-off-by: Johannes Berg Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20241007144851.5851b6b5fd41.Ibdf50d96afa4b761dd9b9dfd54a1147e77a75329@changeid Signed-off-by: Johannes Berg