diff options
Diffstat (limited to 'net/mac80211')
| -rw-r--r-- | net/mac80211/cfg.c | 59 | ||||
| -rw-r--r-- | net/mac80211/ieee80211_i.h | 2 | ||||
| -rw-r--r-- | net/mac80211/offchannel.c | 30 |
3 files changed, 81 insertions, 10 deletions
diff --git a/net/mac80211/cfg.c b/net/mac80211/cfg.c index 168a6ba8fc28..4bc8a9250cfd 100644 --- a/net/mac80211/cfg.c +++ b/net/mac80211/cfg.c @@ -1641,6 +1641,7 @@ static int ieee80211_remain_on_channel(struct wiphy *wiphy, ret = ieee80211_remain_on_channel_hw(local, dev, chan, channel_type, duration, cookie); + local->hw_roc_for_tx = false; mutex_unlock(&local->mtx); return ret; @@ -1783,6 +1784,49 @@ static int ieee80211_mgmt_tx(struct wiphy *wiphy, struct net_device *dev, *cookie = (unsigned long) skb; + if (is_offchan && local->ops->remain_on_channel) { + unsigned int duration; + int ret; + + mutex_lock(&local->mtx); + /* + * If the duration is zero, then the driver + * wouldn't actually do anything. Set it to + * 100 for now. + * + * TODO: cancel the off-channel operation + * when we get the SKB's TX status and + * the wait time was zero before. + */ + duration = 100; + if (wait) + duration = wait; + ret = ieee80211_remain_on_channel_hw(local, dev, chan, + channel_type, + duration, cookie); + if (ret) { + kfree_skb(skb); + mutex_unlock(&local->mtx); + return ret; + } + + local->hw_roc_for_tx = true; + local->hw_roc_duration = wait; + + /* + * queue up frame for transmission after + * ieee80211_ready_on_channel call + */ + + /* modify cookie to prevent API mismatches */ + *cookie ^= 2; + IEEE80211_SKB_CB(skb)->flags |= IEEE80211_TX_CTL_TX_OFFCHAN; + local->hw_roc_skb = skb; + mutex_unlock(&local->mtx); + + return 0; + } + /* * Can transmit right away if the channel was the * right one and there's no wait involved... If a @@ -1823,6 +1867,21 @@ static int ieee80211_mgmt_tx_cancel_wait(struct wiphy *wiphy, int ret = -ENOENT; mutex_lock(&local->mtx); + + if (local->ops->cancel_remain_on_channel) { + cookie ^= 2; + ret = ieee80211_cancel_remain_on_channel_hw(local, cookie); + + if (ret == 0) { + kfree_skb(local->hw_roc_skb); + local->hw_roc_skb = NULL; + } + + mutex_unlock(&local->mtx); + + return ret; + } + list_for_each_entry(wk, &local->work_list, list) { if (wk->sdata != sdata) continue; diff --git a/net/mac80211/ieee80211_i.h b/net/mac80211/ieee80211_i.h index f866af8de5ac..c47d7c0e48a4 100644 --- a/net/mac80211/ieee80211_i.h +++ b/net/mac80211/ieee80211_i.h @@ -953,10 +953,12 @@ struct ieee80211_local { struct ieee80211_channel *hw_roc_channel; struct net_device *hw_roc_dev; + struct sk_buff *hw_roc_skb; struct work_struct hw_roc_start, hw_roc_done; enum nl80211_channel_type hw_roc_channel_type; unsigned int hw_roc_duration; u32 hw_roc_cookie; + bool hw_roc_for_tx; /* dummy netdev for use w/ NAPI */ struct net_device napi_dev; diff --git a/net/mac80211/offchannel.c b/net/mac80211/offchannel.c index 49b9ec22d9b6..b4e52676f3fb 100644 --- a/net/mac80211/offchannel.c +++ b/net/mac80211/offchannel.c @@ -196,6 +196,7 @@ static void ieee80211_hw_roc_start(struct work_struct *work) { struct ieee80211_local *local = container_of(work, struct ieee80211_local, hw_roc_start); + struct ieee80211_sub_if_data *sdata; mutex_lock(&local->mtx); @@ -206,11 +207,19 @@ static void ieee80211_hw_roc_start(struct work_struct *work) ieee80211_recalc_idle(local); - cfg80211_ready_on_channel(local->hw_roc_dev, local->hw_roc_cookie, - local->hw_roc_channel, - local->hw_roc_channel_type, - local->hw_roc_duration, - GFP_KERNEL); + if (local->hw_roc_skb) { + sdata = IEEE80211_DEV_TO_SUB_IF(local->hw_roc_dev); + ieee80211_tx_skb(sdata, local->hw_roc_skb); + local->hw_roc_skb = NULL; + } else { + cfg80211_ready_on_channel(local->hw_roc_dev, + local->hw_roc_cookie, + local->hw_roc_channel, + local->hw_roc_channel_type, + local->hw_roc_duration, + GFP_KERNEL); + } + mutex_unlock(&local->mtx); } @@ -236,11 +245,12 @@ static void ieee80211_hw_roc_done(struct work_struct *work) return; } - cfg80211_remain_on_channel_expired(local->hw_roc_dev, - local->hw_roc_cookie, - local->hw_roc_channel, - local->hw_roc_channel_type, - GFP_KERNEL); + if (!local->hw_roc_for_tx) + cfg80211_remain_on_channel_expired(local->hw_roc_dev, + local->hw_roc_cookie, + local->hw_roc_channel, + local->hw_roc_channel_type, + GFP_KERNEL); local->hw_roc_channel = NULL; local->hw_roc_cookie = 0; |