diff options
| -rw-r--r-- | drivers/net/wireless/ath9k/ath9k.h | 10 | ||||
| -rw-r--r-- | drivers/net/wireless/ath9k/beacon.c | 3 | ||||
| -rw-r--r-- | drivers/net/wireless/ath9k/main.c | 1 | ||||
| -rw-r--r-- | drivers/net/wireless/ath9k/rc.h | 7 | ||||
| -rw-r--r-- | drivers/net/wireless/ath9k/virtual.c | 161 | ||||
| -rw-r--r-- | drivers/net/wireless/ath9k/xmit.c | 11 |
6 files changed, 191 insertions, 2 deletions
diff --git a/drivers/net/wireless/ath9k/ath9k.h b/drivers/net/wireless/ath9k/ath9k.h index 386b936..1153374 100644 --- a/drivers/net/wireless/ath9k/ath9k.h +++ b/drivers/net/wireless/ath9k/ath9k.h @@ -292,6 +292,7 @@ struct ath_atx_ac { struct ath_tx_control { struct ath_txq *txq; int if_id; + enum ath9k_internal_frame_type frame_type; }; struct ath_xmit_status { @@ -392,6 +393,7 @@ struct ath_vif { enum nl80211_iftype av_opmode; struct ath_buf *av_bcbuf; struct ath_tx_control av_btxctl; + u8 bssid[ETH_ALEN]; /* current BSSID from config_interface */ }; /*******************/ @@ -619,6 +621,11 @@ struct ath_softc { struct ath_wiphy { struct ath_softc *sc; /* shared for all virtual wiphys */ struct ieee80211_hw *hw; + enum ath_wiphy_state { + ATH_WIPHY_ACTIVE, + ATH_WIPHY_PAUSING, + ATH_WIPHY_PAUSED, + } state; }; int ath_reset(struct ath_softc *sc, bool retry_tx); @@ -684,5 +691,8 @@ static inline void ath9k_ps_restore(struct ath_softc *sc) void ath9k_set_bssid_mask(struct ieee80211_hw *hw); int ath9k_wiphy_add(struct ath_softc *sc); int ath9k_wiphy_del(struct ath_wiphy *aphy); +void ath9k_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb); +int ath9k_wiphy_pause(struct ath_wiphy *aphy); +int ath9k_wiphy_unpause(struct ath_wiphy *aphy); #endif /* ATH9K_H */ diff --git a/drivers/net/wireless/ath9k/beacon.c b/drivers/net/wireless/ath9k/beacon.c index 760f5b8..039c781 100644 --- a/drivers/net/wireless/ath9k/beacon.c +++ b/drivers/net/wireless/ath9k/beacon.c @@ -125,6 +125,9 @@ static struct ath_buf *ath_beacon_generate(struct ieee80211_hw *hw, struct ieee80211_tx_info *info; int cabq_depth; + if (aphy->state != ATH_WIPHY_ACTIVE) + return NULL; + avp = (void *)vif->drv_priv; cabq = sc->beacon.cabq; diff --git a/drivers/net/wireless/ath9k/main.c b/drivers/net/wireless/ath9k/main.c index 433a11c..7e44013 100644 --- a/drivers/net/wireless/ath9k/main.c +++ b/drivers/net/wireless/ath9k/main.c @@ -2373,6 +2373,7 @@ static int ath9k_config_interface(struct ieee80211_hw *hw, case NL80211_IFTYPE_ADHOC: /* Set BSSID */ memcpy(sc->curbssid, conf->bssid, ETH_ALEN); + memcpy(avp->bssid, conf->bssid, ETH_ALEN); sc->curaid = 0; ath9k_hw_write_associd(sc); diff --git a/drivers/net/wireless/ath9k/rc.h b/drivers/net/wireless/ath9k/rc.h index 0584122..db9b0b9 100644 --- a/drivers/net/wireless/ath9k/rc.h +++ b/drivers/net/wireless/ath9k/rc.h @@ -194,12 +194,19 @@ struct ath_rate_priv { struct ath_rate_softc *asc; }; +enum ath9k_internal_frame_type { + ATH9K_NOT_INTERNAL, + ATH9K_INT_PAUSE, + ATH9K_INT_UNPAUSE +}; + struct ath_tx_info_priv { struct ath_wiphy *aphy; struct ath_tx_status tx; int n_frames; int n_bad_frames; bool update_rc; + enum ath9k_internal_frame_type frame_type; }; #define ATH_TX_INFO_PRIV(tx_info) \ diff --git a/drivers/net/wireless/ath9k/virtual.c b/drivers/net/wireless/ath9k/virtual.c index 67bcb93..a8bac97 100644 --- a/drivers/net/wireless/ath9k/virtual.c +++ b/drivers/net/wireless/ath9k/virtual.c @@ -175,3 +175,164 @@ int ath9k_wiphy_del(struct ath_wiphy *aphy) spin_unlock_bh(&sc->wiphy_lock); return -ENOENT; } + +static int ath9k_send_nullfunc(struct ath_wiphy *aphy, + struct ieee80211_vif *vif, const u8 *bssid, + int ps) +{ + struct ath_softc *sc = aphy->sc; + struct ath_tx_control txctl; + struct sk_buff *skb; + struct ieee80211_hdr *hdr; + __le16 fc; + struct ieee80211_tx_info *info; + + skb = dev_alloc_skb(24); + if (skb == NULL) + return -ENOMEM; + hdr = (struct ieee80211_hdr *) skb_put(skb, 24); + memset(hdr, 0, 24); + fc = cpu_to_le16(IEEE80211_FTYPE_DATA | IEEE80211_STYPE_NULLFUNC | + IEEE80211_FCTL_TODS); + if (ps) + fc |= cpu_to_le16(IEEE80211_FCTL_PM); + hdr->frame_control = fc; + memcpy(hdr->addr1, bssid, ETH_ALEN); + memcpy(hdr->addr2, aphy->hw->wiphy->perm_addr, ETH_ALEN); + memcpy(hdr->addr3, bssid, ETH_ALEN); + + info = IEEE80211_SKB_CB(skb); + memset(info, 0, sizeof(*info)); + info->flags = IEEE80211_TX_CTL_REQ_TX_STATUS; + info->control.vif = vif; + info->control.rates[0].idx = 0; + info->control.rates[0].count = 4; + info->control.rates[1].idx = -1; + + memset(&txctl, 0, sizeof(struct ath_tx_control)); + txctl.txq = &sc->tx.txq[sc->tx.hwq_map[ATH9K_WME_AC_VO]]; + txctl.frame_type = ps ? ATH9K_INT_PAUSE : ATH9K_INT_UNPAUSE; + + if (ath_tx_start(aphy->hw, skb, &txctl) != 0) + goto exit; + + return 0; +exit: + dev_kfree_skb_any(skb); + return -1; +} + +/* + * ath9k version of ieee80211_tx_status() for TX frames that are generated + * internally in the driver. + */ +void ath9k_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb) +{ + struct ath_wiphy *aphy = hw->priv; + struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb); + struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); + struct ath_tx_info_priv *tx_info_priv = ATH_TX_INFO_PRIV(tx_info); + + if (tx_info_priv && tx_info_priv->frame_type == ATH9K_INT_PAUSE && + aphy->state == ATH_WIPHY_PAUSING) { + if (!(info->flags & IEEE80211_TX_STAT_ACK)) { + printk(KERN_DEBUG "ath9k: %s: no ACK for pause " + "frame\n", wiphy_name(hw->wiphy)); + /* + * The AP did not reply; ignore this to allow us to + * continue. + */ + } + aphy->state = ATH_WIPHY_PAUSED; + } + + kfree(tx_info_priv); + tx_info->rate_driver_data[0] = NULL; + + dev_kfree_skb(skb); +} + +static void ath9k_pause_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct ath_wiphy *aphy = data; + struct ath_vif *avp = (void *) vif->drv_priv; + + switch (vif->type) { + case NL80211_IFTYPE_STATION: + if (!vif->bss_conf.assoc) { + aphy->state = ATH_WIPHY_PAUSED; + break; + } + /* TODO: could avoid this if already in PS mode */ + ath9k_send_nullfunc(aphy, vif, avp->bssid, 1); + break; + case NL80211_IFTYPE_AP: + /* Beacon transmission is paused by aphy->state change */ + aphy->state = ATH_WIPHY_PAUSED; + break; + default: + break; + } +} + +/* caller must hold wiphy_lock */ +static int __ath9k_wiphy_pause(struct ath_wiphy *aphy) +{ + ieee80211_stop_queues(aphy->hw); + aphy->state = ATH_WIPHY_PAUSING; + /* + * TODO: handle PAUSING->PAUSED for the case where there are multiple + * active vifs (now we do it on the first vif getting ready; should be + * on the last) + */ + ieee80211_iterate_active_interfaces_atomic(aphy->hw, ath9k_pause_iter, + aphy); + return 0; +} + +int ath9k_wiphy_pause(struct ath_wiphy *aphy) +{ + int ret; + spin_lock_bh(&aphy->sc->wiphy_lock); + ret = __ath9k_wiphy_pause(aphy); + spin_unlock_bh(&aphy->sc->wiphy_lock); + return ret; +} + +static void ath9k_unpause_iter(void *data, u8 *mac, struct ieee80211_vif *vif) +{ + struct ath_wiphy *aphy = data; + struct ath_vif *avp = (void *) vif->drv_priv; + + switch (vif->type) { + case NL80211_IFTYPE_STATION: + if (!vif->bss_conf.assoc) + break; + ath9k_send_nullfunc(aphy, vif, avp->bssid, 0); + break; + case NL80211_IFTYPE_AP: + /* Beacon transmission is re-enabled by aphy->state change */ + break; + default: + break; + } +} + +/* caller must hold wiphy_lock */ +static int __ath9k_wiphy_unpause(struct ath_wiphy *aphy) +{ + ieee80211_iterate_active_interfaces_atomic(aphy->hw, + ath9k_unpause_iter, aphy); + aphy->state = ATH_WIPHY_ACTIVE; + ieee80211_wake_queues(aphy->hw); + return 0; +} + +int ath9k_wiphy_unpause(struct ath_wiphy *aphy) +{ + int ret; + spin_lock_bh(&aphy->sc->wiphy_lock); + ret = __ath9k_wiphy_unpause(aphy); + spin_unlock_bh(&aphy->sc->wiphy_lock); + return ret; +} diff --git a/drivers/net/wireless/ath9k/xmit.c b/drivers/net/wireless/ath9k/xmit.c index 3c48fa5..a82d2ab 100644 --- a/drivers/net/wireless/ath9k/xmit.c +++ b/drivers/net/wireless/ath9k/xmit.c @@ -1514,6 +1514,7 @@ static int ath_tx_setup_buffer(struct ieee80211_hw *hw, struct ath_buf *bf, return -ENOMEM; tx_info->rate_driver_data[0] = tx_info_priv; tx_info_priv->aphy = aphy; + tx_info_priv->frame_type = txctl->frame_type; hdrlen = ieee80211_get_hdrlen_from_skb(skb); fc = hdr->frame_control; @@ -1722,11 +1723,14 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb, struct ieee80211_tx_info *tx_info = IEEE80211_SKB_CB(skb); struct ath_tx_info_priv *tx_info_priv = ATH_TX_INFO_PRIV(tx_info); int hdrlen, padsize; + int frame_type = ATH9K_NOT_INTERNAL; DPRINTF(sc, ATH_DBG_XMIT, "TX complete: skb: %p\n", skb); - if (tx_info_priv) + if (tx_info_priv) { hw = tx_info_priv->aphy->hw; + frame_type = tx_info_priv->frame_type; + } if (tx_info->flags & IEEE80211_TX_CTL_NO_ACK || tx_info->flags & IEEE80211_TX_STAT_TX_FILTERED) { @@ -1757,7 +1761,10 @@ static void ath_tx_complete(struct ath_softc *sc, struct sk_buff *skb, skb_pull(skb, padsize); } - ieee80211_tx_status(hw, skb); + if (frame_type == ATH9K_NOT_INTERNAL) + ieee80211_tx_status(hw, skb); + else + ath9k_tx_status(hw, skb); } static void ath_tx_complete_buf(struct ath_softc *sc, struct ath_buf *bf, |