* [B.A.T.M.A.N.] [PATCH maint] batman-adv: change the MAC of each VLAN upon ndo_set_mac_address
@ 2014-03-24 0:47 Antonio Quartulli
0 siblings, 0 replies; only message in thread
From: Antonio Quartulli @ 2014-03-24 0:47 UTC (permalink / raw)
To: b.a.t.m.a.n; +Cc: Antonio Quartulli
From: Antonio Quartulli <antonio@open-mesh.com>
The MAC address of the soft-interface is used to initialise
the "non-purge" TT entry of each existing VLAN. Therefore
when the user invokes ndo_set_mac_address() all the
"non-purge" TT entries have to be updated, not only the one
belonging to the non-tagged network.
Signed-off-by: Antonio Quartulli <antonio@open-mesh.com>
---
soft-interface.c | 16 +++++++++++++---
1 file changed, 13 insertions(+), 3 deletions(-)
diff --git a/soft-interface.c b/soft-interface.c
index f82c267..d0cfe06 100644
--- a/soft-interface.c
+++ b/soft-interface.c
@@ -115,12 +115,22 @@ static int batadv_interface_set_mac_addr(struct net_device *dev, void *p)
memcpy(dev->dev_addr, addr->sa_data, ETH_ALEN);
/* only modify transtable if it has been initialized before */
- if (atomic_read(&bat_priv->mesh_state) == BATADV_MESH_ACTIVE) {
- batadv_tt_local_remove(bat_priv, old_addr, BATADV_NO_FLAGS,
+ if (atomic_read(&bat_priv->mesh_state) != BATADV_MESH_ACTIVE)
+ return 0;
+
+ rcu_read_lock();
+ hlist_for_each_entry_rcu(vlan, &bat_priv->softif_vlan_list, list) {
+ if (!atomic_inc_not_zero(&vlan->refcount))
+ continue;
+
+ batadv_tt_local_remove(bat_priv, old_addr, vlan->vid,
"mac address changed", false);
- batadv_tt_local_add(dev, addr->sa_data, BATADV_NO_FLAGS,
+ batadv_tt_local_add(dev, addr->sa_data, vlan->vid,
BATADV_NULL_IFINDEX, BATADV_NO_MARK);
+
+ batadv_softif_vlan_free_ref(vlan);
}
+ rcu_read_unlock();
return 0;
}
--
1.8.3.2
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2014-03-24 0:47 [B.A.T.M.A.N.] [PATCH maint] batman-adv: change the MAC of each VLAN upon ndo_set_mac_address Antonio Quartulli
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