diff options
| author | Johannes Berg <johannes.berg@intel.com> | 2026-04-28 11:25:33 +0200 |
|---|---|---|
| committer | Johannes Berg <johannes.berg@intel.com> | 2026-05-05 14:49:03 +0200 |
| commit | 3ca884399be1bcb04baec264a75133cf7a422b52 (patch) | |
| tree | bcd4146c8633a895e3b276a0a44bf64d6e3fb63f /net/wireless | |
| parent | 1cf1d06e956dfbb05a7f69f64ab3c8938117eabe (diff) | |
wifi: cfg80211: add helper for parsing NPCA to chandef
Add a cfg80211_chandef_add_npca() helper function that takes an
existing chandef without NPCA and sets the NPCA information from
the format used in UHR operation and UHR Parameters Update.
Link: https://patch.msgid.link/20260428112708.5cdc4e69a306.I95d396ac671da438f340b1afb735ebfe33164894@changeid
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Diffstat (limited to 'net/wireless')
| -rw-r--r-- | net/wireless/chan.c | 46 |
1 files changed, 46 insertions, 0 deletions
diff --git a/net/wireless/chan.c b/net/wireless/chan.c index 38b83b44b5dc..5289a4ddacd6 100644 --- a/net/wireless/chan.c +++ b/net/wireless/chan.c @@ -556,6 +556,52 @@ int cfg80211_chandef_primary(const struct cfg80211_chan_def *c, } EXPORT_SYMBOL(cfg80211_chandef_primary); +int cfg80211_chandef_add_npca(struct wiphy *wiphy, + struct cfg80211_chan_def *chandef, + const struct ieee80211_uhr_npca_info *npca) +{ + struct cfg80211_chan_def new_chandef = *chandef; + u32 width, npca_freq; + u8 offs; + + if (chandef->npca_chan || chandef->npca_punctured) + return -EINVAL; + + if (WARN_ON(!cfg80211_chandef_valid(chandef))) + return -EINVAL; + + if (!npca) + return 0; + + switch (chandef->width) { + case NL80211_CHAN_WIDTH_80: + case NL80211_CHAN_WIDTH_160: + case NL80211_CHAN_WIDTH_320: + break; + default: + return -EINVAL; + } + + offs = le32_get_bits(npca->params, + IEEE80211_UHR_NPCA_PARAMS_PRIMARY_CHAN_OFFS); + + width = cfg80211_chandef_get_width(chandef); + npca_freq = chandef->center_freq1 - width / 2 + 10 + 20 * offs; + new_chandef.npca_chan = ieee80211_get_channel(wiphy, npca_freq); + if (!new_chandef.npca_chan) + return -EINVAL; + + if (npca->params & cpu_to_le32(IEEE80211_UHR_NPCA_PARAMS_DIS_SUBCH_BMAP_PRES)) + new_chandef.npca_punctured = le16_to_cpu(npca->dis_subch_bmap[0]); + + if (!cfg80211_chandef_valid(&new_chandef)) + return -EINVAL; + + *chandef = new_chandef; + return 0; +} +EXPORT_SYMBOL(cfg80211_chandef_add_npca); + static const struct cfg80211_chan_def * check_chandef_primary_compat(const struct cfg80211_chan_def *c1, const struct cfg80211_chan_def *c2, |