diff options
| author | Roopa Prabhu <roopa@cumulusnetworks.com> | 2018-04-24 13:49:34 -0700 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-04-25 13:19:59 -0400 |
| commit | 9ce33e46531d4b9f94b0fa135781e27c7c4e32e8 (patch) | |
| tree | bc18c132cdc706b70ca1f77b38f0a8fd670d8660 /net/core/neighbour.c | |
| parent | 0aef78aa7b39829a2a46c1c0e6e96276d744e07a (diff) | |
| download | lwn-9ce33e46531d4b9f94b0fa135781e27c7c4e32e8.tar.gz lwn-9ce33e46531d4b9f94b0fa135781e27c7c4e32e8.zip | |
neighbour: support for NTF_EXT_LEARNED flag
This patch extends NTF_EXT_LEARNED support to the neighbour system.
Example use-case: An Ethernet VPN implementation (eg in FRR routing suite)
can use this flag to add dynamic reachable external neigh entires
learned via control plane. The use of neigh NTF_EXT_LEARNED in this
patch is consistent with its use with bridge and vxlan fdb entries.
Signed-off-by: Roopa Prabhu <roopa@cumulusnetworks.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'net/core/neighbour.c')
| -rw-r--r-- | net/core/neighbour.c | 8 |
1 files changed, 7 insertions, 1 deletions
diff --git a/net/core/neighbour.c b/net/core/neighbour.c index ce519861be59..5afae29367c1 100644 --- a/net/core/neighbour.c +++ b/net/core/neighbour.c @@ -820,7 +820,8 @@ static void neigh_periodic_work(struct work_struct *work) write_lock(&n->lock); state = n->nud_state; - if (state & (NUD_PERMANENT | NUD_IN_TIMER)) { + if ((state & (NUD_PERMANENT | NUD_IN_TIMER)) || + (n->flags & NTF_EXT_LEARNED)) { write_unlock(&n->lock); goto next_elt; } @@ -1136,6 +1137,8 @@ int neigh_update(struct neighbour *neigh, const u8 *lladdr, u8 new, if (neigh->dead) goto out; + neigh_update_ext_learned(neigh, flags, ¬ify); + if (!(new & NUD_VALID)) { neigh_del_timer(neigh); if (old & NUD_CONNECTED) @@ -1781,6 +1784,9 @@ static int neigh_add(struct sk_buff *skb, struct nlmsghdr *nlh, flags &= ~NEIGH_UPDATE_F_OVERRIDE; } + if (ndm->ndm_flags & NTF_EXT_LEARNED) + flags |= NEIGH_UPDATE_F_EXT_LEARNED; + if (ndm->ndm_flags & NTF_USE) { neigh_event_send(neigh, NULL); err = 0; |