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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
synced 2024-12-06 23:26:39 +07:00
ath10k: fix ath10k_bss_assoc() to not sleep in atomic context
ath10k_bss_assoc() was calling ath10k_peer_assoc(), which can sleep, under atomic rcu_read_lock() and causing scheduing while atomic errors. Workaround that by delaying the call to ath10k_wmi_peer_assoc(). Signed-off-by: Kalle Valo <kvalo@qca.qualcomm.com>
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@ -1137,26 +1137,25 @@ static void ath10k_peer_assoc_h_phymode(struct ath10k *ar,
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WARN_ON(phymode == MODE_UNKNOWN);
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}
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static int ath10k_peer_assoc(struct ath10k *ar,
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struct ath10k_vif *arvif,
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struct ieee80211_sta *sta,
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struct ieee80211_bss_conf *bss_conf)
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static int ath10k_peer_assoc_prepare(struct ath10k *ar,
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struct ath10k_vif *arvif,
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struct ieee80211_sta *sta,
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struct ieee80211_bss_conf *bss_conf,
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struct wmi_peer_assoc_complete_arg *arg)
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{
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struct wmi_peer_assoc_complete_arg arg;
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lockdep_assert_held(&ar->conf_mutex);
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memset(&arg, 0, sizeof(struct wmi_peer_assoc_complete_arg));
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memset(arg, 0, sizeof(*arg));
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ath10k_peer_assoc_h_basic(ar, arvif, sta, bss_conf, &arg);
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ath10k_peer_assoc_h_crypto(ar, arvif, &arg);
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ath10k_peer_assoc_h_rates(ar, sta, &arg);
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ath10k_peer_assoc_h_ht(ar, sta, &arg);
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ath10k_peer_assoc_h_vht(ar, sta, &arg);
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ath10k_peer_assoc_h_qos(ar, arvif, sta, bss_conf, &arg);
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ath10k_peer_assoc_h_phymode(ar, arvif, sta, &arg);
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ath10k_peer_assoc_h_basic(ar, arvif, sta, bss_conf, arg);
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ath10k_peer_assoc_h_crypto(ar, arvif, arg);
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ath10k_peer_assoc_h_rates(ar, sta, arg);
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ath10k_peer_assoc_h_ht(ar, sta, arg);
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ath10k_peer_assoc_h_vht(ar, sta, arg);
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ath10k_peer_assoc_h_qos(ar, arvif, sta, bss_conf, arg);
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ath10k_peer_assoc_h_phymode(ar, arvif, sta, arg);
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return ath10k_wmi_peer_assoc(ar, &arg);
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return 0;
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}
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/* can be called only in mac80211 callbacks due to `key_count` usage */
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@ -1166,6 +1165,7 @@ static void ath10k_bss_assoc(struct ieee80211_hw *hw,
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{
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struct ath10k *ar = hw->priv;
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struct ath10k_vif *arvif = ath10k_vif_to_arvif(vif);
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struct wmi_peer_assoc_complete_arg peer_arg;
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struct ieee80211_sta *ap_sta;
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int ret;
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@ -1181,15 +1181,24 @@ static void ath10k_bss_assoc(struct ieee80211_hw *hw,
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return;
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}
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ret = ath10k_peer_assoc(ar, arvif, ap_sta, bss_conf);
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ret = ath10k_peer_assoc_prepare(ar, arvif, ap_sta,
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bss_conf, &peer_arg);
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if (ret) {
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ath10k_warn("Peer assoc failed for %pM\n", bss_conf->bssid);
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ath10k_warn("Peer assoc prepare failed for %pM\n: %d",
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bss_conf->bssid, ret);
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rcu_read_unlock();
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return;
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}
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rcu_read_unlock();
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ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
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if (ret) {
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ath10k_warn("Peer assoc failed for %pM\n: %d",
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bss_conf->bssid, ret);
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return;
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}
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ath10k_dbg(ATH10K_DBG_MAC,
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"mac vdev %d up (associated) bssid %pM aid %d\n",
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arvif->vdev_id, bss_conf->bssid, bss_conf->aid);
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@ -1243,13 +1252,22 @@ static void ath10k_bss_disassoc(struct ieee80211_hw *hw,
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static int ath10k_station_assoc(struct ath10k *ar, struct ath10k_vif *arvif,
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struct ieee80211_sta *sta)
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{
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struct wmi_peer_assoc_complete_arg peer_arg;
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int ret = 0;
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lockdep_assert_held(&ar->conf_mutex);
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ret = ath10k_peer_assoc(ar, arvif, sta, NULL);
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ret = ath10k_peer_assoc_prepare(ar, arvif, sta, NULL, &peer_arg);
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if (ret) {
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ath10k_warn("WMI peer assoc failed for %pM\n", sta->addr);
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ath10k_warn("WMI peer assoc prepare failed for %pM\n",
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sta->addr);
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return ret;
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}
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ret = ath10k_wmi_peer_assoc(ar, &peer_arg);
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if (ret) {
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ath10k_warn("Peer assoc failed for STA %pM\n: %d",
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sta->addr, ret);
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return ret;
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}
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