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| author |   Sven Eckelmann <sven@narfation.org> | 2022-02-28 01:32:40 +0100 |
|---|---|---|
| committer |   Jakub Kicinski <kuba@kernel.org> | 2022-03-01 17:59:28 -0800 |
| commit | a02192151b7dbf855084c38dca380d77c7658353 (patch) | |
| tree | f062af8eed42db364dd10a1de75c1bb54c27404b | |
| parent | nfp: avoid newline at end of message in NL_SET_ERR_MSG_MOD (diff) | |
| download | linux-dev-a02192151b7dbf855084c38dca380d77c7658353.tar.xz linux-dev-a02192151b7dbf855084c38dca380d77c7658353.zip | |
macvtap: advertise link netns via netlink
Assign rtnl_link_ops->get_link_net() callback so that IFLA_LINK_NETNSID is
added to rtnetlink messages. This fixes iproute2 which otherwise resolved
the link interface to an interface in the wrong namespace.
Test commands:
ip netns add nst
ip link add dummy0 type dummy
ip link add link macvtap0 link dummy0 type macvtap
ip link set macvtap0 netns nst
ip -netns nst link show macvtap0
Before:
10: macvtap0@gre0: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 500
link/ether 5e:8f:ae:1d:60:50 brd ff:ff:ff:ff:ff:ff
After:
10: macvtap0@if2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN mode DEFAULT group default qlen 500
link/ether 5e:8f:ae:1d:60:50 brd ff:ff:ff:ff:ff:ff link-netnsid 0
Reported-by: Leonardo Mörlein <freifunk@irrelefant.net>
Signed-off-by: Sven Eckelmann <sven@narfation.org>
Link: https://lore.kernel.org/r/20220228003240.1337426-1-sven@narfation.org
Signed-off-by: Jakub Kicinski <kuba@kernel.org>
| -rw-r--r-- | drivers/net/macvtap.c | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/drivers/net/macvtap.c b/drivers/net/macvtap.c index 6b12902a803f..cecf8c63096c 100644 --- a/drivers/net/macvtap.c +++ b/drivers/net/macvtap.c @@ -133,11 +133,17 @@ static void macvtap_setup(struct net_device *dev) dev->tx_queue_len = TUN_READQ_SIZE; } +static struct net *macvtap_link_net(const struct net_device *dev) +{ + return dev_net(macvlan_dev_real_dev(dev)); +} + static struct rtnl_link_ops macvtap_link_ops __read_mostly = { .kind = "macvtap", .setup = macvtap_setup, .newlink = macvtap_newlink, .dellink = macvtap_dellink, + .get_link_net = macvtap_link_net, .priv_size = sizeof(struct macvtap_dev), }; |