Commit 193523bf authored by Nicolas Dichtel's avatar Nicolas Dichtel Committed by David S. Miller
Browse files

vxlan: advertise netns of vxlan dev in fdb msg

Netlink FDB messages are sent in the link netns. The header of these messages
contains the ifindex (ndm_ifindex) of the netdevice, but this ifindex is
unusable in case of x-netns vxlan.
I named the new attribute NDA_NDM_IFINDEX_NETNSID, to avoid confusion with
Signed-off-by: default avatarNicolas Dichtel <>
Signed-off-by: default avatarDavid S. Miller <>
parent e5f4e7b9
......@@ -339,6 +339,11 @@ static int vxlan_fdb_info(struct sk_buff *skb, struct vxlan_dev *vxlan,
ndm->ndm_flags = fdb->flags;
ndm->ndm_type = RTN_UNICAST;
if (!net_eq(dev_net(vxlan->dev), vxlan->net) &&
nla_put_s32(skb, NDA_NDM_IFINDEX_NETNSID,
peernet2id(vxlan->net, dev_net(vxlan->dev))))
goto nla_put_failure;
if (send_eth && nla_put(skb, NDA_LLADDR, ETH_ALEN, &fdb->eth_addr))
goto nla_put_failure;
......@@ -25,6 +25,7 @@ enum {
......@@ -202,6 +202,7 @@ int peernet2id(struct net *net, struct net *peer)
return id >= 0 ? id : NETNSA_NSID_NOT_ASSIGNED;
struct net *get_net_ns_by_id(struct net *net, int id)
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