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net: bridge: allow to add externally learned entries from user-space

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The NTF_EXT_LEARNED flag was added for switchdev and externally learned
entries, but it can also be used for entries learned via a software
in user-space which requires dynamic entries that do not expire.
One such case that we have is with quagga and evpn which need dynamic
entries but also require to age them themselves.

Signed-off-by: Nikolay Aleksandrov <[email protected]>
Reviewed-by: Ido Schimmel <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Nikolay Aleksandrov authored and David S. Miller committed 2017-03-24 12:30:21 -07:00
1 parent 7e26bf45e4
commit eb100e0e24
1 file changed
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net/bridge/br_fdb.c
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@@ -857,6 +857,8 @@ static int __br_fdb_add(struct ndmsg *ndm, struct net_bridge *br,
br_fdb_update(br, p, addr, vid, true);
rcu_read_unlock();
local_bh_enable();
} else if (ndm->ndm_flags & NTF_EXT_LEARNED) {
err = br_fdb_external_learn_add(br, p, addr, vid);
} else {
spin_lock_bh(&br->hash_lock);
err = fdb_add_entry(br, p, addr, ndm->ndm_state,