[PATCH AUTOSEL 4.18 010/100] mac80211: fix TX status reporting for ieee80211s

[Sasha Levin]

From: Yuan-Chi Pang <fu3mo6...@gmail.com>

[ Upstream commit c42055105785580563535e6d3143cad95c7ac7ee ]

TX status reporting to ieee80211s is through ieee80211s_update_metric.
There are two problems about ieee80211s_update_metric:

1. The purpose is to estimate the fail probability
to a specific link. No need to restrict to data frame.

2. Current implementation does not work if wireless driver does not
pass tx_status with skb.

Fix this by removing ieee80211_is_data condition, passing
ieee80211_tx_status directly to ieee80211s_update_metric, and
putting it in both __ieee80211_tx_status and ieee80211_tx_status_ext.

Signed-off-by: Yuan-Chi Pang <fu3mo6...@gmail.com>
Signed-off-by: Johannes Berg <johannes.b...@intel.com>
Signed-off-by: Sasha Levin <sas...@kernel.org>
---
 net/mac80211/mesh.h      | 3 ++-
 net/mac80211/mesh_hwmp.c | 9 +++------
 net/mac80211/status.c    | 4 +++-
 3 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index ee56f18cad3f..21526630bf65 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -217,7 +217,8 @@ void mesh_rmc_free(struct ieee80211_sub_if_data *sdata);
 int mesh_rmc_init(struct ieee80211_sub_if_data *sdata);
 void ieee80211s_init(void);
 void ieee80211s_update_metric(struct ieee80211_local *local,
-                             struct sta_info *sta, struct sk_buff *skb);
+                             struct sta_info *sta,
+                             struct ieee80211_tx_status *st);
 void ieee80211_mesh_init_sdata(struct ieee80211_sub_if_data *sdata);
 void ieee80211_mesh_teardown_sdata(struct ieee80211_sub_if_data *sdata);
 int ieee80211_start_mesh(struct ieee80211_sub_if_data *sdata);
diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index daf9db3c8f24..6950cd0bf594 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -295,15 +295,12 @@ int mesh_path_error_tx(struct ieee80211_sub_if_data 
*sdata,
 }
 
 void ieee80211s_update_metric(struct ieee80211_local *local,
-               struct sta_info *sta, struct sk_buff *skb)
+                             struct sta_info *sta,
+                             struct ieee80211_tx_status *st)
 {
-       struct ieee80211_tx_info *txinfo = IEEE80211_SKB_CB(skb);
-       struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+       struct ieee80211_tx_info *txinfo = st->info;
        int failed;
 
-       if (!ieee80211_is_data(hdr->frame_control))
-               return;
-
        failed = !(txinfo->flags & IEEE80211_TX_STAT_ACK);
 
        /* moving average, scaled to 100.
diff --git a/net/mac80211/status.c b/net/mac80211/status.c
index 001a869c059c..91d7c0cd1882 100644
--- a/net/mac80211/status.c
+++ b/net/mac80211/status.c
@@ -808,7 +808,7 @@ static void __ieee80211_tx_status(struct ieee80211_hw *hw,
 
                rate_control_tx_status(local, sband, status);
                if (ieee80211_vif_is_mesh(&sta->sdata->vif))
-                       ieee80211s_update_metric(local, sta, skb);
+                       ieee80211s_update_metric(local, sta, status);
 
                if (!(info->flags & IEEE80211_TX_CTL_INJECTED) && acked)
                        ieee80211_frame_acked(sta, skb);
@@ -969,6 +969,8 @@ void ieee80211_tx_status_ext(struct ieee80211_hw *hw,
                }
 
                rate_control_tx_status(local, sband, status);
+               if (ieee80211_vif_is_mesh(&sta->sdata->vif))
+                       ieee80211s_update_metric(local, sta, status);
        }
 
        if (acked || noack_success) {
-- 
2.17.1