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wifi: mac80211: correctly parse Spatial Reuse Parameter Set element

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Currently, the way of parsing Spatial Reuse Parameter Set element is
incorrect and some members of struct ieee80211_he_obss_pd are not assigned.

To address this issue, it must be parsed in the order of the elements of
Spatial Reuse Parameter Set defined in the IEEE Std 802.11ax specification.

The diagram of the Spatial Reuse Parameter Set element (IEEE Std 802.11ax
-2021-9.4.2.252).

-------------------------------------------------------------------------
|       |      |         |       |Non-SRG|  SRG  | SRG   | SRG  | SRG   |
|Element|Length| Element |  SR   |OBSS PD|OBSS PD|OBSS PD| BSS  |Partial|
|   ID  |      |   ID    |Control|  Max  |  Min  | Max   |Color | BSSID |
|       |      |Extension|       | Offset| Offset|Offset |Bitmap|Bitmap |
-------------------------------------------------------------------------

Fixes: 1ced169cc1 ("mac80211: allow setting spatial reuse parameters from bss_conf")
Signed-off-by: Lingbo Kong <quic_lingbok@quicinc.com>
Link: https://msgid.link/20240516021854.5682-3-quic_lingbok@quicinc.com
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Lingbo Kong 2024-05-16 10:18:54 +08:00 committed by Johannes Berg
parent 0c2fd18f7e
commit a26d8dc522
1 changed files with 8 additions and 2 deletions
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10
net/mac80211/he.c
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@ -230,15 +230,21 @@ ieee80211_he_spr_ie_to_bss_conf(struct ieee80211_vif *vif,
if (!he_spr_ie_elem)
return;
he_obss_pd->sr_ctrl = he_spr_ie_elem->he_sr_control;
data = he_spr_ie_elem->optional;
if (he_spr_ie_elem->he_sr_control &
IEEE80211_HE_SPR_NON_SRG_OFFSET_PRESENT)
data++;
he_obss_pd->non_srg_max_offset = *data++;
if (he_spr_ie_elem->he_sr_control &
IEEE80211_HE_SPR_SRG_INFORMATION_PRESENT) {
he_obss_pd->max_offset = *data++;
he_obss_pd->min_offset = *data++;
he_obss_pd->max_offset = *data++;
memcpy(he_obss_pd->bss_color_bitmap, data, 8);
data += 8;
memcpy(he_obss_pd->partial_bssid_bitmap, data, 8);
he_obss_pd->enable = true;
}
}