From: Bob Copeland <[email protected]>

Transmit locally-originated group data frames on every interface
so that members of the mesh on every channel will see the frame.

For individually-addressed frames, when we resolve the next
hop, the outgoing interface might be different than the
originator if the best path is on a different channel.
Requeue such frames on the correct interface's pending queue.

Signed-off-by: Bob Copeland <[email protected]>
---
 net/mac80211/mesh_hwmp.c |   12 +++++++++++-
 net/mac80211/tx.c        |    3 +++
 2 files changed, 14 insertions(+), 1 deletion(-)

diff --git a/net/mac80211/mesh_hwmp.c b/net/mac80211/mesh_hwmp.c
index d8eaccc..6ba483e 100644
--- a/net/mac80211/mesh_hwmp.c
+++ b/net/mac80211/mesh_hwmp.c
@@ -1115,6 +1115,7 @@ int mesh_nexthop_resolve(struct ieee80211_sub_if_data 
*sdata,
                         struct sk_buff *skb)
 {
        struct ieee80211_hdr *hdr = (struct ieee80211_hdr *) skb->data;
+       struct ieee80211_sub_if_data *dest_sdata;
        struct ieee80211_tx_info *info = IEEE80211_SKB_CB(skb);
        struct mesh_local_bss *mbss = mbss(sdata);
        struct mesh_path *mpath;
@@ -1128,8 +1129,17 @@ int mesh_nexthop_resolve(struct ieee80211_sub_if_data 
*sdata,
 
        rcu_read_lock();
        err = mesh_nexthop_lookup(mbss, skb);
-       if (!err)
+       if (!err) {
+               dest_sdata = vif_to_sdata(info->control.vif);
+               /* requeue if mesh path uses a different interface */
+               if (dest_sdata != sdata) {
+                       info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
+                       ieee80211_set_qos_hdr(dest_sdata, skb);
+                       ieee80211_add_pending_skb(dest_sdata->local, skb);
+                       err = -EAGAIN;
+               }
                goto endlookup;
+       }
 
        /* no nexthop found, start resolving */
        mpath = mesh_path_lookup(mbss, target_addr);
diff --git a/net/mac80211/tx.c b/net/mac80211/tx.c
index c132c76..4b28680 100644
--- a/net/mac80211/tx.c
+++ b/net/mac80211/tx.c
@@ -1452,6 +1452,9 @@ void ieee80211_xmit(struct ieee80211_sub_if_data *sdata, 
struct sk_buff *skb,
                } else {
                        ieee80211_mps_set_frame_flags(sdata, NULL, hdr);
                }
+               if (is_multicast_ether_addr(hdr->addr1) &&
+                   ieee80211_is_data(hdr->frame_control))
+                       mesh_bss_forward_tx(sdata, skb);
        }
 
        ieee80211_set_qos_hdr(sdata, skb);
-- 
1.7.10.4

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