From: Kalle Valo <[email protected]>
Commit e8c1841278a7 ("wifi: cfg80211: annotate iftype_data pointer with
sparse") added sparse checks for struct ieee80211_sband_iftype_data handling
which immediately found an issue in ath11k:
drivers/net/wireless/ath/ath11k/mac.c:7952:22: warning: incorrect type in argument 1 (different address spaces)
drivers/net/wireless/ath/ath11k/mac.c:7952:22: expected struct ieee80211_sta_he_cap const *he_cap
drivers/net/wireless/ath/ath11k/mac.c:7952:22: got struct ieee80211_sta_he_cap const [noderef] __iftype_data *
The problem here is that we are accessing sband->iftype_data directly even
though we should use for_each_sband_iftype_data() or similar. Fortunately
there's ieee80211_get_he_iftype_cap_vif() which is just what we need here so
use it to get HE capabilities.
Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.23
Reported-by: Johannes Berg <[email protected]>
Signed-off-by: Kalle Valo <[email protected]>
---
drivers/net/wireless/ath/ath11k/mac.c | 10 ++++++++--
1 file changed, 8 insertions(+), 2 deletions(-)
diff --git a/drivers/net/wireless/ath/ath11k/mac.c b/drivers/net/wireless/ath/ath11k/mac.c
index c071bf5841af..19e8cb9bf728 100644
--- a/drivers/net/wireless/ath/ath11k/mac.c
+++ b/drivers/net/wireless/ath/ath11k/mac.c
@@ -7910,12 +7910,14 @@ ath11k_mac_get_tx_mcs_map(const struct ieee80211_sta_he_cap *he_cap)
static bool
ath11k_mac_bitrate_mask_get_single_nss(struct ath11k *ar,
+ struct ath11k_vif *arvif,
enum nl80211_band band,
const struct cfg80211_bitrate_mask *mask,
int *nss)
{
struct ieee80211_supported_band *sband = &ar->mac.sbands[band];
u16 vht_mcs_map = le16_to_cpu(sband->vht_cap.vht_mcs.tx_mcs_map);
+ const struct ieee80211_sta_he_cap *he_cap;
u16 he_mcs_map = 0;
u8 ht_nss_mask = 0;
u8 vht_nss_mask = 0;
@@ -7946,7 +7948,11 @@ ath11k_mac_bitrate_mask_get_single_nss(struct ath11k *ar,
return false;
}
- he_mcs_map = le16_to_cpu(ath11k_mac_get_tx_mcs_map(&sband->iftype_data->he_cap));
+ he_cap = ieee80211_get_he_iftype_cap_vif(sband, arvif->vif);
+ if (!he_cap)
+ return false;
+
+ he_mcs_map = le16_to_cpu(ath11k_mac_get_tx_mcs_map(he_cap));
for (i = 0; i < ARRAY_SIZE(mask->control[band].he_mcs); i++) {
if (mask->control[band].he_mcs[i] == 0)
@@ -8362,7 +8368,7 @@ ath11k_mac_op_set_bitrate_mask(struct ieee80211_hw *hw,
ieee80211_iterate_stations_atomic(ar->hw,
ath11k_mac_disable_peer_fixed_rate,
arvif);
- } else if (ath11k_mac_bitrate_mask_get_single_nss(ar, band, mask,
+ } else if (ath11k_mac_bitrate_mask_get_single_nss(ar, arvif, band, mask,
&single_nss)) {
rate = WMI_FIXED_RATE_NONE;
nss = single_nss;
--
2.39.2
Kalle Valo <[email protected]> wrote:
> Commit e8c1841278a7 ("wifi: cfg80211: annotate iftype_data pointer with
> sparse") added sparse checks for struct ieee80211_sband_iftype_data handling
> which immediately found an issue in ath11k:
>
> drivers/net/wireless/ath/ath11k/mac.c:7952:22: warning: incorrect type in argument 1 (different address spaces)
> drivers/net/wireless/ath/ath11k/mac.c:7952:22: expected struct ieee80211_sta_he_cap const *he_cap
> drivers/net/wireless/ath/ath11k/mac.c:7952:22: got struct ieee80211_sta_he_cap const [noderef] __iftype_data *
>
> The problem here is that we are accessing sband->iftype_data directly even
> though we should use for_each_sband_iftype_data() or similar. Fortunately
> there's ieee80211_get_he_iftype_cap_vif() which is just what we need here so
> use it to get HE capabilities.
>
> Tested-on: WCN6855 hw2.0 PCI WLAN.HSP.1.1-03125-QCAHSPSWPL_V1_V2_SILICONZ_LITE-3.6510.23
>
> Reported-by: Johannes Berg <[email protected]>
> Signed-off-by: Kalle Valo <[email protected]>
Patch applied to ath-next branch of ath.git, thanks.
9e61589ac3c2 wifi: ath11k: mac: fix struct ieee80211_sband_iftype_data handling
--
https://patchwork.kernel.org/project/linux-wireless/patch/[email protected]/
https://wireless.wiki.kernel.org/en/developers/documentation/submittingpatches