package/kernel/mac80211/patches/subsys/314-wifi-mac80211-remove-mesh-forwarding-congestion-chec.patch

   1 From: Felix Fietkau <nbd@nbd.name>
   2 Date: Fri, 2 Dec 2022 17:01:46 +0100
   3 Subject: [PATCH] wifi: mac80211: remove mesh forwarding congestion check
   4
   5 Now that all drivers use iTXQ, it does not make sense to check to drop
   6 tx forwarding packets when the driver has stopped the queues.
   7 fq_codel will take care of dropping packets when the queues fill up
   8
   9 Signed-off-by: Felix Fietkau <nbd@nbd.name>
  10 ---
  11
  12 --- a/net/mac80211/debugfs_netdev.c
  13 +++ b/net/mac80211/debugfs_netdev.c
  14 @@ -603,8 +603,6 @@ IEEE80211_IF_FILE(fwded_mcast, u.mesh.ms
  15  IEEE80211_IF_FILE(fwded_unicast, u.mesh.mshstats.fwded_unicast, DEC);
  16  IEEE80211_IF_FILE(fwded_frames, u.mesh.mshstats.fwded_frames, DEC);
  17  IEEE80211_IF_FILE(dropped_frames_ttl, u.mesh.mshstats.dropped_frames_ttl, DEC);
  18 -IEEE80211_IF_FILE(dropped_frames_congestion,
  19 -                 u.mesh.mshstats.dropped_frames_congestion, DEC);
  20  IEEE80211_IF_FILE(dropped_frames_no_route,
  21                   u.mesh.mshstats.dropped_frames_no_route, DEC);
  22
  23 @@ -740,7 +738,6 @@ static void add_mesh_stats(struct ieee80
  24         MESHSTATS_ADD(fwded_frames);
  25         MESHSTATS_ADD(dropped_frames_ttl);
  26         MESHSTATS_ADD(dropped_frames_no_route);
  27 -       MESHSTATS_ADD(dropped_frames_congestion);
  28  #undef MESHSTATS_ADD
  29  }
  30
  31 --- a/net/mac80211/ieee80211_i.h
  32 +++ b/net/mac80211/ieee80211_i.h
  33 @@ -329,7 +329,6 @@ struct mesh_stats {
  34         __u32 fwded_frames;             /* Mesh total forwarded frames */
  35         __u32 dropped_frames_ttl;       /* Not transmitted since mesh_ttl == 0*/
  36         __u32 dropped_frames_no_route;  /* Not transmitted, no route found */
  37 -       __u32 dropped_frames_congestion;/* Not forwarded due to congestion */
  38  };
  39
  40  #define PREQ_Q_F_START         0x1
  41 --- a/net/mac80211/rx.c
  42 +++ b/net/mac80211/rx.c
  43 @@ -2926,11 +2926,6 @@ ieee80211_rx_h_mesh_fwding(struct ieee80
  44                 return RX_CONTINUE;
  45
  46         ac = ieee802_1d_to_ac[skb->priority];
  47 -       q = sdata->vif.hw_queue[ac];
  48 -       if (ieee80211_queue_stopped(&local->hw, q)) {
  49 -               IEEE80211_IFSTA_MESH_CTR_INC(ifmsh, dropped_frames_congestion);
  50 -               return RX_DROP_MONITOR;
  51 -       }
  52         skb_set_queue_mapping(skb, ac);
  53
  54         if (!--mesh_hdr->ttl) {