kernel/linux.git/net/mac80211/offchannel.c, branch v7.2-rc2

wifi: mac80211: remove 5/10 MHz channel code

2026-06-03T12:07:06+00:00

Now that cfg80211 refuses all attempts to use 5/10 MHz channels, all of this code is unreachable; remove it. Signed-off-by: Johannes Berg Reviewed-by: Lachlan Hodges Link: https://patch.msgid.link/20260529084502.4e5a9350206c.I2f6169a067ddd1b5e234668fcb6e07957fafacf2@changeid Signed-off-by: Johannes Berg

wifi: cfg80211/mac80211: Add NL80211_IFTYPE_PD for PD PASN and PMSR operations

2026-05-05T11:28:57+00:00

Add a new wdev-only interface type NL80211_IFTYPE_PD to support Proximity Detection (PD) operations such as PASN and peer measurement operations. This interface type operates without a netdev, similar to P2P_DEVICE and NAN interfaces. Implement support across cfg80211 and mac80211 layers with PD-specific checks gated by the NL80211_EXT_FEATURE_SECURE_RTT feature flag, management frame registration and transmission capabilities, and proper channel context handling where PD interfaces are excluded from bandwidth calculations. Update mac80211 to recognize the new interface type in the relevant paths for this management-only interface. PD discovery can be performed on any available interface, such as NL80211_IFTYPE_STATION. If PD/PMSR uses the MAC address of an existing interface type, such as NL80211_IFTYPE_STATION, then pairing and measurement shall use that same interface. If PD/PMSR uses a different MAC address, such as a random MAC address, then pairing and measurement can be performed on a new NL80211_IFTYPE_PD interface created with that random MAC address. Signed-off-by: Peddolla Harshavardhan Reddy Link: https://patch.msgid.link/20260420090856.2152905-4-peddolla.reddy@oss.qualcomm.com [fix comment style] Signed-off-by: Johannes Berg

wifi: cfg80211: Add MAC address filter to remain_on_channel

2026-05-05T11:25:27+00:00

Currently the remain_on_channel operation does not support filtering incoming frames by destination MAC address. This prevents use cases such as PASN authentication in the responder side that need to receive frames addressed to a specific MAC during the off-channel period. Add an rx_addr parameter to the remain_on_channel operation callback and propagate it through the call chain from nl80211 to driver implementations. Introduce the extended feature NL80211_EXT_FEATURE_ROC_ADDR_FILTER as a capability gate so that cfg80211 rejects the request if the driver does not advertise support for address filtering. Extract the address from the NL80211_ATTR_MAC attribute when provided in the netlink message and update the tracing infrastructure to include the address in remain_on_channel trace events. The rx_addr parameter is optional and can be NULL, maintaining backward compatibility with existing drivers. Signed-off-by: Peddolla Harshavardhan Reddy Link: https://patch.msgid.link/20260420090856.2152905-3-peddolla.reddy@oss.qualcomm.com Signed-off-by: Johannes Berg

wifi: mac80211: allow userspace TX/RX over NAN Data interfaces

2026-05-05T10:10:14+00:00

Allow TX/RX of action frames (for NAN action frames) over NAN Data interfaces to support cases where there's a secure NDP and NAFs may be exchanged over that. Signed-off-by: Ilan Peer Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20260504101829.4ac207c60ebb.Ic4b1c90552497b7ff2616651a408e5fe8bde7b99@changeid Signed-off-by: Johannes Berg

Convert 'alloc_obj' family to use the new default GFP_KERNEL argument

2026-02-22T01:09:51+00:00

This was done entirely with mindless brute force, using git grep -l '\

treewide: Replace kmalloc with kmalloc_obj for non-scalar types

2026-02-21T09:02:28+00:00

This is the result of running the Coccinelle script from scripts/coccinelle/api/kmalloc_objs.cocci. The script is designed to avoid scalar types (which need careful case-by-case checking), and instead replace kmalloc-family calls that allocate struct or union object instances: Single allocations: kmalloc(sizeof(TYPE), ...) are replaced with: kmalloc_obj(TYPE, ...) Array allocations: kmalloc_array(COUNT, sizeof(TYPE), ...) are replaced with: kmalloc_objs(TYPE, COUNT, ...) Flex array allocations: kmalloc(struct_size(PTR, FAM, COUNT), ...) are replaced with: kmalloc_flex(*PTR, FAM, COUNT, ...) (where TYPE may also be *VAR) The resulting allocations no longer return "void *", instead returning "TYPE *". Signed-off-by: Kees Cook

wifi: mac80211: Support Tx of action frame for NAN

2025-09-19T09:26:22+00:00

Add support for sending management frame over a NAN Device interface: - Declare support for the supported management frames types. - Since action frame transmissions over a NAN Device interface do not necessarily require a channel configuration, e.g., they can be transmitted during DW, modify the Tx path to avoid accessing channel information for NAN Device interface. - In addition modify the points in the Tx path logic to account for cases that a band is not specified in the Tx information. Signed-off-by: Ilan Peer Signed-off-by: Miri Korenblit Link: https://patch.msgid.link/20250908140015.23b160089228.I65a58af753bcbcfb5c4ad8ef372d546f889725ba@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: mac80211: Allow scan on a radio while operating on DFS on another radio

2025-06-20T08:44:05+00:00

Currently, in multi-radio wiphy cases, if one radio is operating on a DFS channel, -EBUSY is returned even when a scan is requested on a different radio. Because of this, an MLD AP with one radio (link) on a DFS channel and Automatic Channel Selection (ACS) on another radio (link) cannot be brought up. In multi-radio wiphy cases, multiple radios are grouped under a single wiphy. Hence, if a radio is operating on a DFS channel and a scan is requested on a different radio of the same wiphy, the scan can be allowed simultaneously without impacting the DFS operations. Add logic to check the underlying radio used for the requested scan. If the radio on which DFS is already running is not being used, allow the scan operation; otherwise, return -EBUSY. Signed-off-by: Raj Kumar Bhagat Link: https://patch.msgid.link/20250527-mlo-dfs-acs-v2-3-92c2f37c81d9@quicinc.com Signed-off-by: Johannes Berg

treewide: Switch/rename to timer_delete[_sync]()

2025-04-05T08:30:12+00:00

timer_delete[_sync]() replaces del_timer[_sync](). Convert the whole tree over and remove the historical wrapper inlines. Conversion was done with coccinelle plus manual fixups where necessary. Signed-off-by: Thomas Gleixner Signed-off-by: Ingo Molnar