Since there are frequency bands (e.g. 5.9GHz) allowing channels with only 10 or 5 MHz bandwidth, this patch adds attributes that allow keeping track about this information. When channel attributes are reported to user-space, make sure to not break old tools, i.e. if the 'split wiphy dump' is enabled, report the extra attributes (if present) describing the bandwidth restrictions. If the 'split wiphy dump' is not enabled, completely omit those channels that have flags set to either IEEE80211_CHAN_NO_10MHZ or IEEE80211_CHAN_NO_20MHZ. Add the check for new bandwidth restriction flags in cfg80211_chandef_usable() to comply with the restrictions.
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| @@ -2358,6 +2358,10 @@ enum nl80211_band_attr { · 2357 unmodified lines | ||
| 2358 | 2358 | * connected to an AP with DFS and radar detection on the UNII band (it is |
| 2359 | 2359 | * up to user-space, i.e., wpa_supplicant to perform the required |
| 2360 | 2360 | * verifications) |
| 2361 | + * @NL80211_FREQUENCY_ATTR_NO_20MHZ: 20 MHz operation is not allowed | |
| 2362 | + * on this channel in current regulatory domain. | |
| 2363 | + * @NL80211_FREQUENCY_ATTR_NO_10MHZ: 10 MHz operation is not allowed | |
| 2364 | + * on this channel in current regulatory domain. | |
| 2361 | 2365 | * @NL80211_FREQUENCY_ATTR_MAX: highest frequency attribute number |
| 2362 | 2366 | * currently defined |
| 2363 | 2367 | * @__NL80211_FREQUENCY_ATTR_AFTER_LAST: internal use |
| @@ -2384,6 +2388,8 @@ enum nl80211_frequency_attr { · 20 unmodified lines | ||
| 2384 | 2388 | NL80211_FREQUENCY_ATTR_DFS_CAC_TIME, |
| 2385 | 2389 | NL80211_FREQUENCY_ATTR_INDOOR_ONLY, |
| 2386 | 2390 | NL80211_FREQUENCY_ATTR_GO_CONCURRENT, |
| 2391 | + NL80211_FREQUENCY_ATTR_NO_20MHZ, | |
| 2392 | + NL80211_FREQUENCY_ATTR_NO_10MHZ, | |
| 2387 | 2393 | |
| 2388 | 2394 | /* keep last */ |
| 2389 | 2395 | __NL80211_FREQUENCY_ATTR_AFTER_LAST, |