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mac80211: remove iwlwifi specific workaround that broke sta NDP tx 

commit e41eb3e408de27982a5f8f50b2dd8002bed96908 upstream.

Sending nulldata packets is important for sw AP link probing and detecting
4-address mode links. The checks that dropped these packets were apparently
added to work around an iwlwifi firmware bug with multi-TID aggregation.

Fixes: 41cbb0f5a2 ("mac80211: add support for HE")
Cc: stable@vger.kernel.org
Signed-off-by: Felix Fietkau <nbd@nbd.name>
Link: https://lore.kernel.org/r/20210619101517.90806-1-nbd@nbd.name
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Felix Fietkau 2021-06-19 12:15:17 +02:00 committed by Greg Kroah-Hartman
parent 1ff563ec86
commit 619c14120c
2 changed files with 3 additions and 9 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

3
drivers/net/wireless/intel/iwlwifi/mvm/tx.c
View File

@ -1091,6 +1091,9 @@ static int iwl_mvm_tx_mpdu(struct iwl_mvm *mvm, struct sk_buff *skb,
if (WARN_ON_ONCE(mvmsta->sta_id == IWL_MVM_INVALID_STA))
return -1;
if (unlikely(ieee80211_is_any_nullfunc(fc)) && sta->he_cap.has_he)
return -1;
if (unlikely(ieee80211_is_probe_resp(fc)))
iwl_mvm_probe_resp_set_noa(mvm, skb);

9
net/mac80211/mlme.c
View File

@ -1014,11 +1014,6 @@ void ieee80211_send_nullfunc(struct ieee80211_local *local,
struct ieee80211_hdr_3addr *nullfunc;
struct ieee80211_if_managed *ifmgd = &sdata->u.mgd;
/* Don't send NDPs when STA is connected HE */
if (sdata->vif.type == NL80211_IFTYPE_STATION &&
!(ifmgd->flags & IEEE80211_STA_DISABLE_HE))
return;
skb = ieee80211_nullfunc_get(&local->hw, &sdata->vif,
!ieee80211_hw_check(&local->hw, DOESNT_SUPPORT_QOS_NDP));
if (!skb)
@ -1050,10 +1045,6 @@ static void ieee80211_send_4addr_nullfunc(struct ieee80211_local *local,
if (WARN_ON(sdata->vif.type != NL80211_IFTYPE_STATION))
return;
/* Don't send NDPs when connected HE */
if (!(sdata->u.mgd.flags & IEEE80211_STA_DISABLE_HE))
return;
skb = dev_alloc_skb(local->hw.extra_tx_headroom + 30);
if (!skb)
return;