mac80211: make rate control tx status API more extensible

Rename .tx_status_noskb to .tx_status_ext and pass a new on-stack
struct ieee80211_tx_status instead of struct ieee80211_tx_info.

This struct can be used to pass extra information, e.g. for dynamic tx
power control

Signed-off-by: Felix Fietkau <nbd@nbd.name>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>

diff --git a/include/net/mac80211.h b/include/net/mac80211.h
index f1b58b5..c9ba79a 100644 (file)
--- a/include/net/mac80211.h
+++ b/include/net/mac80211.h
@@ -949,6 +949,19 @@ struct ieee80211_tx_info {
 };
 
 /**
+ * struct ieee80211_tx_status - extended tx staus info for rate control
+ *
+ * @sta: Station that the packet was transmitted for
+ * @info: Basic tx status information
+ * @skb: Packet skb (can be NULL if not provided by the driver)
+ */
+struct ieee80211_tx_status {
+       struct ieee80211_sta *sta;
+       struct ieee80211_tx_info *info;
+       struct sk_buff *skb;
+};
+
+/**
  * struct ieee80211_scan_ies - descriptors for different blocks of IEs
  *
  * This structure is used to point to different blocks of IEs in HW scan
@@ -5471,10 +5484,9 @@ struct rate_control_ops {
        void (*free_sta)(void *priv, struct ieee80211_sta *sta,
                         void *priv_sta);
 
-       void (*tx_status_noskb)(void *priv,
-                               struct ieee80211_supported_band *sband,
-                               struct ieee80211_sta *sta, void *priv_sta,
-                               struct ieee80211_tx_info *info);
+       void (*tx_status_ext)(void *priv,
+                             struct ieee80211_supported_band *sband,
+                             void *priv_sta, struct ieee80211_tx_status *st);
        void (*tx_status)(void *priv, struct ieee80211_supported_band *sband,
                          struct ieee80211_sta *sta, void *priv_sta,
                          struct sk_buff *skb);

diff --git a/net/mac80211/rate.c b/net/mac80211/rate.c
index 9d7a1cd..b387c07 100644 (file)
--- a/net/mac80211/rate.c
+++ b/net/mac80211/rate.c
@@ -62,6 +62,28 @@ void rate_control_rate_init(struct sta_info *sta)
        set_sta_flag(sta, WLAN_STA_RATE_CONTROL);
 }
 
+void rate_control_tx_status(struct ieee80211_local *local,
+                           struct ieee80211_supported_band *sband,
+                           struct ieee80211_tx_status *st)
+{
+       struct rate_control_ref *ref = local->rate_ctrl;
+       struct sta_info *sta = container_of(st->sta, struct sta_info, sta);
+       void *priv_sta = sta->rate_ctrl_priv;
+
+       if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
+               return;
+
+       spin_lock_bh(&sta->rate_ctrl_lock);
+       if (ref->ops->tx_status_ext)
+               ref->ops->tx_status_ext(ref->priv, sband, priv_sta, st);
+       else if (st->skb)
+               ref->ops->tx_status(ref->priv, sband, st->sta, priv_sta, st->skb);
+       else
+               WARN_ON_ONCE(1);
+
+       spin_unlock_bh(&sta->rate_ctrl_lock);
+}
+
 void rate_control_rate_update(struct ieee80211_local *local,
                                    struct ieee80211_supported_band *sband,
                                    struct sta_info *sta, u32 changed)

diff --git a/net/mac80211/rate.h b/net/mac80211/rate.h
index f7825ef..8212bfe 100644 (file)
--- a/net/mac80211/rate.h
+++ b/net/mac80211/rate.h
@@ -28,47 +28,9 @@ void rate_control_get_rate(struct ieee80211_sub_if_data *sdata,
                           struct sta_info *sta,
                           struct ieee80211_tx_rate_control *txrc);
 
-static inline void rate_control_tx_status(struct ieee80211_local *local,
-                                         struct ieee80211_supported_band *sband,
-                                         struct sta_info *sta,
-                                         struct sk_buff *skb)
-{
-       struct rate_control_ref *ref = local->rate_ctrl;
-       struct ieee80211_sta *ista = &sta->sta;
-       void *priv_sta = sta->rate_ctrl_priv;
-       struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
-
-       if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
-               return;
-
-       spin_lock_bh(&sta->rate_ctrl_lock);
-       if (ref->ops->tx_status)
-               ref->ops->tx_status(ref->priv, sband, ista, priv_sta, skb);
-       else
-               ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
-       spin_unlock_bh(&sta->rate_ctrl_lock);
-}
-
-static inline void
-rate_control_tx_status_noskb(struct ieee80211_local *local,
-                            struct ieee80211_supported_band *sband,
-                            struct sta_info *sta,
-                            struct ieee80211_tx_info *info)
-{
-       struct rate_control_ref *ref = local->rate_ctrl;
-       struct ieee80211_sta *ista = &sta->sta;
-       void *priv_sta = sta->rate_ctrl_priv;
-
-       if (!ref || !test_sta_flag(sta, WLAN_STA_RATE_CONTROL))
-               return;
-
-       if (WARN_ON_ONCE(!ref->ops->tx_status_noskb))
-               return;
-
-       spin_lock_bh(&sta->rate_ctrl_lock);
-       ref->ops->tx_status_noskb(ref->priv, sband, ista, priv_sta, info);
-       spin_unlock_bh(&sta->rate_ctrl_lock);
-}
+void rate_control_tx_status(struct ieee80211_local *local,
+                           struct ieee80211_supported_band *sband,
+                           struct ieee80211_tx_status *st);
 
 void rate_control_rate_init(struct sta_info *sta);
 void rate_control_rate_update(struct ieee80211_local *local,

diff --git a/net/mac80211/rc80211_minstrel.c b/net/mac80211/rc80211_minstrel.c
index 3ebe440..9766c1c 100644 (file)
--- a/net/mac80211/rc80211_minstrel.c
+++ b/net/mac80211/rc80211_minstrel.c
@@ -264,9 +264,9 @@ minstrel_update_stats(struct minstrel_priv *mp, struct minstrel_sta_info *mi)
 
 static void
 minstrel_tx_status(void *priv, struct ieee80211_supported_band *sband,
-                  struct ieee80211_sta *sta, void *priv_sta,
-                  struct ieee80211_tx_info *info)
+                  void *priv_sta, struct ieee80211_tx_status *st)
 {
+       struct ieee80211_tx_info *info = st->info;
        struct minstrel_priv *mp = priv;
        struct minstrel_sta_info *mi = priv_sta;
        struct ieee80211_tx_rate *ar = info->status.rates;
@@ -726,7 +726,7 @@ static u32 minstrel_get_expected_throughput(void *priv_sta)
 
 const struct rate_control_ops mac80211_minstrel = {
        .name = "minstrel",
-       .tx_status_noskb = minstrel_tx_status,
+       .tx_status_ext = minstrel_tx_status,
        .get_rate = minstrel_get_rate,
        .rate_init = minstrel_rate_init,
        .alloc = minstrel_alloc,

diff --git a/net/mac80211/rc80211_minstrel_ht.c b/net/mac80211/rc80211_minstrel_ht.c
index 8e783e1..4a5bdad 100644 (file)
--- a/net/mac80211/rc80211_minstrel_ht.c
+++ b/net/mac80211/rc80211_minstrel_ht.c
@@ -678,9 +678,9 @@ minstrel_aggr_check(struct ieee80211_sta *pubsta, struct sk_buff *skb)
 
 static void
 minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
-                      struct ieee80211_sta *sta, void *priv_sta,
-                      struct ieee80211_tx_info *info)
+                      void *priv_sta, struct ieee80211_tx_status *st)
 {
+       struct ieee80211_tx_info *info = st->info;
        struct minstrel_ht_sta_priv *msp = priv_sta;
        struct minstrel_ht_sta *mi = &msp->ht;
        struct ieee80211_tx_rate *ar = info->status.rates;
@@ -690,8 +690,8 @@ minstrel_ht_tx_status(void *priv, struct ieee80211_supported_band *sband,
        int i;
 
        if (!msp->is_ht)
-               return mac80211_minstrel.tx_status_noskb(priv, sband, sta,
-                                                        &msp->legacy, info);
+               return mac80211_minstrel.tx_status_ext(priv, sband,
+                                                      &msp->legacy, st);
 
        /* This packet was aggregated but doesn't carry status info */
        if ((info->flags & IEEE80211_TX_CTL_AMPDU) &&
@@ -1374,7 +1374,7 @@ static u32 minstrel_ht_get_expected_throughput(void *priv_sta)
 
 static const struct rate_control_ops mac80211_minstrel_ht = {
        .name = "minstrel_ht",
-       .tx_status_noskb = minstrel_ht_tx_status,
+       .tx_status_ext = minstrel_ht_tx_status,
        .get_rate = minstrel_ht_get_rate,
        .rate_init = minstrel_ht_rate_init,
        .rate_update = minstrel_ht_rate_update,

diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index fac191d..e655b3a 100644 (file)
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -637,6 +637,7 @@ void ieee80211_tx_status_noskb(struct ieee80211_hw *hw,
 {
        struct ieee80211_local *local = hw_to_local(hw);
        struct ieee80211_supported_band *sband;
+       struct ieee80211_tx_status status = {};
        int retry_count;
        bool acked, noack_success;
 
@@ -669,7 +670,9 @@ void ieee80211_tx_status_noskb(struct ieee80211_hw *hw,
                        ieee80211_lost_packet(sta, info);
                }
 
-               rate_control_tx_status_noskb(local, sband, sta, info);
+               status.sta = pubsta;
+               status.info = info;
+               rate_control_tx_status(local, sband, &status);
        }
 
        if (acked || noack_success) {
@@ -748,6 +751,7 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
        struct ieee80211_local *local = hw_to_local(hw);
        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
+       struct ieee80211_tx_status status = {};
        __le16 fc;
        struct ieee80211_supported_band *sband;
        struct rhlist_head *tmp;
@@ -857,7 +861,10 @@ void ieee80211_tx_status(struct ieee80211_hw *hw, struct sk_buff *skb)
                        }
                }
 
-               rate_control_tx_status(local, sband, sta, skb);
+               status.sta = &sta->sta;
+               status.skb = skb;
+               status.info = info;
+               rate_control_tx_status(local, sband, &status);
                if (ieee80211_vif_is_mesh(&sta->sdata->vif))
                        ieee80211s_update_metric(local, sta, skb);