kernel/linux.git/net/wireless/chan.c, branch v6.6.132

wifi: cfg80211: move puncturing bitmap validation from mac80211

2023-02-14T11:09:18+00:00

- Move ieee80211_valid_disable_subchannel_bitmap() from mlme.c to chan.c, rename it as cfg80211_valid_disable_subchannel_bitmap() and export it. - Modify the prototype to include struct cfg80211_chan_def instead of only bandwidth to support a check which returns false if the primary channel is punctured. Signed-off-by: Aloka Dixit Link: https://lore.kernel.org/r/20230131001227.25014-2-quic_alokad@quicinc.com Signed-off-by: Johannes Berg

wifi: nl80211: relax wdev mutex check in wdev_chandef()

2022-07-01T09:42:58+00:00

In many cases we might get here from driver code that's not really set up to care about the locking, and for the non-MLO cases we really don't care so much about it. So relax the checking here for now, perhaps we should even remove it completely since we might not really care if we point to an invalid link's chandef and can require the caller to check the link validity first. Fixes: 7b0a0e3c3a88 ("wifi: cfg80211: do some rework towards MLO link APIs") Signed-off-by: Johannes Berg

wifi: cfg80211: do some rework towards MLO link APIs

2022-06-20T10:54:58+00:00

In order to support multi-link operation with multiple links, start adding some APIs. The notable addition here is to have the link ID in a new nl80211 attribute, that will be used to differentiate the links in many nl80211 operations. So far, this patch adds the netlink NL80211_ATTR_MLO_LINK_ID attribute (as well as the NL80211_ATTR_MLO_LINKS attribute) and plugs it through the system in some places, checking the validity etc. along with other infrastructure needed for it. For now, I've decided to include only the over-the-air link ID in the API. I know we discussed that we eventually need to have to have other ways of identifying a link, but for local AP mode and auth/assoc commands as well as set_key etc. we'll use the OTA ID. Also included in this patch is some refactoring of the data structures in struct wireless_dev, splitting for the first time the data into type dependent pieces, to make reasoning about these things easier. Signed-off-by: Johannes Berg

cfg80211: remove cfg80211_get_chan_state()

2022-05-04T10:30:24+00:00

We haven't used this function for years, since commit c781944b71f8 ("cfg80211: Remove unused cfg80211_can_use_iftype_chan()") which itself removed a function unused since commit 97dc94f1d933 ("cfg80211: remove channel_switch combination check"), almost eight years ago. Also remove the now unused enum cfg80211_chan_mode and some struct members that were only used for this function. Link: https://lore.kernel.org/r/20220412220958.1a191dca19d7.Ide4448f02d0e2f1ca2992971421ffc1933a5370a@changeid Signed-off-by: Johannes Berg

cfg80211: Add support for EHT 320 MHz channel width

2022-02-16T14:42:39+00:00

Add 320 MHz support in the channel def and center frequency validation with compatible check. Signed-off-by: Jia Ding Co-authored-by: Karthikeyan Periyasamy Signed-off-by: Karthikeyan Periyasamy Co-authored-by: Muna Sinada Signed-off-by: Muna Sinada Co-authored-by: Veerendranath Jakkam Signed-off-by: Veerendranath Jakkam Link: https://lore.kernel.org/r/1640163883-12696-5-git-send-email-quic_vjakkam@quicinc.com Link: https://lore.kernel.org/r/20220214163009.175289-1-johannes@sipsolutions.net Signed-off-by: Johannes Berg

cfg80211: rename offchannel_chain structs to background_chain to avoid confusion with ETSI standard

2021-12-20T09:37:36+00:00

ETSI standard defines "Offchannel CAC" as: "Off-Channel CAC is performed by a number of non-continuous checks spread over a period in time. This period, which is required to determine the presence of radar signals, is defined as the Off-Channel CAC Time.. Minimum Off-Channel CAC Time 6 minutes and Maximum Off-Channel CAC Time 4 hours..". mac80211 implementation refers to a dedicated hw chain used for continuous radar monitoring. Rename offchannel_* references to background_* in order to avoid confusion with ETSI standard. Signed-off-by: Lorenzo Bianconi Link: https://lore.kernel.org/r/4204cc1d648d76b44557981713231e030a3bd991.1638190762.git.lorenzo@kernel.org Signed-off-by: Johannes Berg

cfg80211: simplify cfg80211_chandef_valid()

2021-12-20T09:36:24+00:00

There are a lot of duplicate checks in this function to check the delta between the control channel and CF1. With the addition of 320 MHz, this will become even more. Simplify the code so that the common checks are done only once for multiple bandwidths. Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/iwlwifi.20211129152938.2d0240b07f11.I759e8e990f5386ba2b56ffb2488a8d4e16e22c1b@changeid Signed-off-by: Johannes Berg

cfg80211: allow continuous radar monitoring on offchannel chain

2021-11-26T10:50:27+00:00

Allow continuous radar detection on the offchannel chain in order to switch to the monitored channel whenever the underlying driver reports a radar pattern on the main channel. Tested-by: Owen Peng Signed-off-by: Lorenzo Bianconi Link: https://lore.kernel.org/r/d46217310a49b14ff0e9c002f0a6e0547d70fd2c.1637071350.git.lorenzo@kernel.org Signed-off-by: Johannes Berg

cfg80211: add cfg80211_any_usable_channels()

2021-06-23T11:05:08+00:00

This helper function checks if there are any usable channels on any of the given bands with the given properties (as expressed by disallowed channel flags). Signed-off-by: Johannes Berg Signed-off-by: Luca Coelho Link: https://lore.kernel.org/r/iwlwifi.20210618133832.2b613addaa85.Idaf8b859089490537878a7de5c7453a873a3f638@changeid Signed-off-by: Johannes Berg

wireless: add check of field VHT Extended NSS BW Capable for 160/80+80 MHz setting

2021-06-23T09:29:13+00:00

Table 9-251—Supported VHT-MCS and NSS Set subfields, it has subfield VHT Extended NSS BW Capable, its definition is: Indicates whether the STA is capable of interpreting the Extended NSS BW Support subfield of the VHT Capabilities Information field. This patch is to add check for the subfield. Signed-off-by: Wen Gong Link: https://lore.kernel.org/r/20210524033624.16993-1-wgong@codeaurora.org Signed-off-by: Johannes Berg