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Commit 193523bf authored Jan 20, 2015 by Nicolas Dichtel Committed by David S. Miller Jan 23, 2015

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
NDA_IFINDEX.

Signed-off-by: Nicolas Dichtel <nicolas.dichtel@6wind.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

parent e5f4e7b9

drivers/net/vxlan.c

+5 −0

Original line number	Diff line number	Diff line
		@@ -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;

include/uapi/linux/neighbour.h

+1 −0

Original line number	Diff line number	Diff line
		@@ -25,6 +25,7 @@ enum {
		NDA_VNI,
		NDA_IFINDEX,
		NDA_MASTER,
		NDA_NDM_IFINDEX_NETNSID,
		__NDA_MAX
		};

net/core/net_namespace.c

+1 −0

Original line number	Diff line number	Diff line
		@@ -202,6 +202,7 @@ int peernet2id(struct net net, struct net peer)

		return id >= 0 ? id : NETNSA_NSID_NOT_ASSIGNED;
		}
		EXPORT_SYMBOL(peernet2id);

		struct net get_net_ns_by_id(struct net net, int id)
		{