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Date: Tue, 1 Sep 2015 17:43:09 +0200
From: Ahmed Amamou <ahmed@...di.net>
To: netdev@...r.kernel.org
Cc: William Dauchy <william@...di.net>, Ahmed Amamou <ahmed@...di.net>,
Kamel Haddadou <kamel@...di.net>
Subject: [PATCH RFC v2 14/21] net: rbridge: update forwarding database
update forwarding database to include nickname information used
in encapsulation and decapsulation
add functions to get and update nickname
Signed-off-by: Ahmed Amamou <ahmed@...di.net>
Signed-off-by: Kamel Haddadou <kamel@...di.net>
Signed-off-by: William Dauchy <william@...di.net>
---
net/bridge/br_fdb.c | 41 +++++++++++++++++++++++++++++++++++++++++
net/bridge/br_private.h | 11 +++++++++++
2 files changed, 52 insertions(+)
diff --git a/net/bridge/br_fdb.c b/net/bridge/br_fdb.c
index 9e9875d..14540f1 100644
--- a/net/bridge/br_fdb.c
+++ b/net/bridge/br_fdb.c
@@ -552,8 +552,14 @@ int br_fdb_insert(struct net_bridge *br, struct net_bridge_port *source,
return ret;
}
+#ifdef CONFIG_TRILL
+void br_fdb_update_nick(struct net_bridge *br, struct net_bridge_port *source,
+ const unsigned char *addr, u16 vid, bool added_by_user,
+ uint16_t nick)
+#else
void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
const unsigned char *addr, u16 vid, bool added_by_user)
+#endif
{
struct hlist_head *head = &br->hash[br_mac_hash(addr, vid)];
struct net_bridge_fdb_entry *fdb;
@@ -587,6 +593,10 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
fdb->added_by_user = 1;
if (unlikely(fdb_modified))
fdb_notify(br, fdb, RTM_NEWNEIGH);
+#ifdef CONFIG_TRILL
+ if (nick != RBRIDGE_NICKNAME_UNUSED)
+ fdb->nick = nick;
+#endif
}
} else {
spin_lock(&br->hash_lock);
@@ -605,6 +615,16 @@ void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
}
}
+#ifdef CONFIG_TRILL
+void br_fdb_update(struct net_bridge *br, struct net_bridge_port *source,
+ const unsigned char *addr, u16 vid, bool added_by_user)
+{
+ br_fdb_update_nick(br, source, addr, vid, added_by_user,
+ RBRIDGE_NICKNAME_UNUSED);
+}
+
+#endif
+
static int fdb_to_nud(const struct net_bridge_fdb_entry *fdb)
{
if (fdb->is_local)
@@ -1076,3 +1096,24 @@ int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
return err;
}
+
+#ifdef CONFIG_TRILL
+/* get_nick_from_mac: used to get correspondant nick to Mac address
+ * used only on ingress/Egress Rbridge (those how encapsulate
+ * and decapsulate frames)
+ * must be called while encapsulating to get mac <-> nick correspondance
+ */
+uint16_t get_nick_from_mac(struct net_bridge_port *p, unsigned char *dest,
+ u16 vid)
+{
+ struct hlist_head *head = &p->br->hash[br_mac_hash(dest, vid)];
+ struct net_bridge_fdb_entry *fdb;
+
+ if (is_multicast_ether_addr(dest))
+ return RBRIDGE_NICKNAME_NONE;
+ fdb = fdb_find(head, dest, vid);
+ if (likely(fdb))
+ return fdb->nick;
+ return RBRIDGE_NICKNAME_NONE;
+}
+#endif
diff --git a/net/bridge/br_private.h b/net/bridge/br_private.h
index ceaf5a9..a62e41e 100644
--- a/net/bridge/br_private.h
+++ b/net/bridge/br_private.h
@@ -120,6 +120,9 @@ struct net_bridge_fdb_entry
added_by_user:1,
added_by_external_learn:1;
__u16 vlan_id;
+#ifdef CONFIG_TRILL
+ __u16 nick; /* destination's nickname */
+#endif
};
struct net_bridge_port_group {
@@ -436,6 +439,14 @@ int br_fdb_external_learn_add(struct net_bridge *br, struct net_bridge_port *p,
const unsigned char *addr, u16 vid);
int br_fdb_external_learn_del(struct net_bridge *br, struct net_bridge_port *p,
const unsigned char *addr, u16 vid);
+#ifdef CONFIG_TRILL
+void br_fdb_update_nick(struct net_bridge *br,
+ struct net_bridge_port *source,
+ const unsigned char *addr,
+ u16 vid, bool added_by_user, uint16_t nick);
+uint16_t get_nick_from_mac(struct net_bridge_port *p, unsigned char *dest,
+ u16 vid);
+#endif
/* br_forward.c */
void br_deliver(const struct net_bridge_port *to, struct sk_buff *skb);
--
2.1.4
--
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