From: Bob Copeland <me@xxxxxxxxxxxxxxx>
Add a function to rebroadcast mcast/bcast frames on other
interfaces when multiple interfaces are shared in an mbss.
Signed-off-by: Bob Copeland <bob@xxxxxxxxxxx>
---
net/mac80211/mesh.c | 43 +++++++++++++++++++++++++++++++++++++++++++
net/mac80211/mesh.h | 4 ++++
2 files changed, 47 insertions(+)
diff --git a/net/mac80211/mesh.c b/net/mac80211/mesh.c
index 5ea4812..eac9988 100644
--- a/net/mac80211/mesh.c
+++ b/net/mac80211/mesh.c
@@ -11,6 +11,7 @@
#include <linux/slab.h>
#include <asm/unaligned.h>
#include "ieee80211_i.h"
+#include "wme.h"
#include "mesh.h"
static int mesh_allocated;
@@ -202,6 +203,48 @@ bool mesh_bss_matches_addr(struct mesh_local_bss *mbss, const u8 *addr)
}
/**
+ * mesh_bss_forward_tx - send a frame on all other interfaces in a bss
+ *
+ * @sdata: interface to exclude from tx
+ * @skb: frame to send
+ *
+ * Forwards group-directed frames from sdata for tx on all other interfaces
+ * which are participating in an mbss.
+ */
+void mesh_bss_forward_tx(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb)
+{
+ struct mesh_local_bss *mbss = mbss(sdata);
+ struct ieee80211_hdr *fwd_hdr;
+ struct sk_buff *fwd_skb;
+ struct ieee80211_tx_info *info;
+ struct ieee80211_sub_if_data *tmp_sdata;
+
+ rcu_read_lock();
+ list_for_each_entry_rcu(tmp_sdata, &mbss->if_list, u.mesh.if_list) {
+
+ if (sdata == tmp_sdata)
+ continue;
+
+ fwd_skb = skb_copy(skb, GFP_ATOMIC);
+ if (!fwd_skb)
+ goto out;
+
+ fwd_hdr = (struct ieee80211_hdr *) fwd_skb->data;
+ info = IEEE80211_SKB_CB(fwd_skb);
+ memset(info, 0, sizeof(*info));
+ info->flags |= IEEE80211_TX_INTFL_NEED_TXPROCESSING;
+ info->control.vif = &tmp_sdata->vif;
+
+ memcpy(fwd_hdr->addr2, tmp_sdata->vif.addr, ETH_ALEN);
+ ieee80211_set_qos_hdr(tmp_sdata, fwd_skb);
+ ieee80211_add_pending_skb(tmp_sdata->local, fwd_skb);
+ }
+out:
+ rcu_read_unlock();
+}
+
+/**
* mesh_matches_local - check if the config of a mesh point matches ours
*
* @sdata: local mesh subif
diff --git a/net/mac80211/mesh.h b/net/mac80211/mesh.h
index f23b58f..4a1a15e 100644
--- a/net/mac80211/mesh.h
+++ b/net/mac80211/mesh.h
@@ -361,6 +361,8 @@ void ieee80211_mesh_notify_scan_completed(struct ieee80211_local *local);
void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata);
void mesh_sync_adjust_tbtt(struct ieee80211_sub_if_data *sdata);
void ieee80211s_stop(void);
+void mesh_bss_forward_tx(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb);
struct ieee80211_sub_if_data *
mesh_bss_find_if(struct mesh_local_bss *mbss, const u8 *addr);
bool mesh_bss_matches_addr(struct mesh_local_bss *mbss, const u8 *addr);
@@ -373,6 +375,8 @@ static inline bool mesh_path_sel_is_hwmp(struct ieee80211_sub_if_data *sdata)
static inline void mesh_path_flush_by_iface(struct ieee80211_sub_if_data *sdata)
{}
static inline void ieee80211s_stop(void) {}
+static inline void mesh_bss_forward_tx(struct ieee80211_sub_if_data *sdata,
+ struct sk_buff *skb) {}
#endif
#endif /* IEEE80211S_H */
--
1.7.10.4
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