From: Andrew Lunn <andrew@lunn.ch>
To: "B.A.T.M.A.N" <b.a.t.m.a.n@lists.open-mesh.net>
Subject: [B.A.T.M.A.N.] [PATCH 01/10] batman-adv: Handle parent interfaces in a different netns
Date: Thu, 28 Apr 2016 22:37:19 +0200 [thread overview]
Message-ID: <1461875848-11720-2-git-send-email-andrew@lunn.ch> (raw)
In-Reply-To: <1461875848-11720-1-git-send-email-andrew@lunn.ch>
batman-adv tries to prevent the user from placing a batX soft
interface into another batman mesh as a hard interface. It does this
by walking up the devices list of parents and ensures they are all
none batX interfaces. iflink can point to an interface in a different
namespace, so also retrieve the parents name space when finding the
parent and use it when doing the comparison.
Signed-off-by: Andrew Lunn <andrew@lunn.ch>
Acked-by: Antonio Quartulli <a@untable.cc>
---
net/batman-adv/hard-interface.c | 31 ++++++++++++++++++++++++-------
1 file changed, 24 insertions(+), 7 deletions(-)
diff --git a/net/batman-adv/hard-interface.c b/net/batman-adv/hard-interface.c
index 8c2f399..e0cd7ce 100644
--- a/net/batman-adv/hard-interface.c
+++ b/net/batman-adv/hard-interface.c
@@ -84,24 +84,37 @@ out:
/**
* batadv_mutual_parents - check if two devices are each others parent
- * @dev1: 1st net_device
- * @dev2: 2nd net_device
+ * @dev1: 1st net dev
+ * @net1: 1st devices netns
+ * @dev2: 2nd net dev
+ * @net2: 2nd devices netns
*
* veth devices come in pairs and each is the parent of the other!
*
* Return: true if the devices are each others parent, otherwise false
*/
static bool batadv_mutual_parents(const struct net_device *dev1,
- const struct net_device *dev2)
+ const struct net *net1,
+ const struct net_device *dev2,
+ const struct net *net2)
{
int dev1_parent_iflink = dev_get_iflink(dev1);
int dev2_parent_iflink = dev_get_iflink(dev2);
+ const struct net *dev1_parent_net = net1;
+ const struct net *dev2_parent_net = net2;
+
+ if (dev1->rtnl_link_ops && dev1->rtnl_link_ops->get_link_net)
+ dev1_parent_net = dev1->rtnl_link_ops->get_link_net(dev1);
+ if (dev2->rtnl_link_ops && dev2->rtnl_link_ops->get_link_net)
+ dev2_parent_net = dev2->rtnl_link_ops->get_link_net(dev2);
if (!dev1_parent_iflink || !dev2_parent_iflink)
return false;
return (dev1_parent_iflink == dev2->ifindex) &&
- (dev2_parent_iflink == dev1->ifindex);
+ (dev2_parent_iflink == dev1->ifindex) &&
+ net_eq(dev1_parent_net, net2) &&
+ net_eq(dev2_parent_net, net1);
}
/**
@@ -119,8 +132,9 @@ static bool batadv_mutual_parents(const struct net_device *dev1,
*/
static bool batadv_is_on_batman_iface(const struct net_device *net_dev)
{
- struct net_device *parent_dev;
struct net *net = dev_net(net_dev);
+ struct net_device *parent_dev;
+ struct net *parent_net = net;
bool ret;
/* check if this is a batman-adv mesh interface */
@@ -132,13 +146,16 @@ static bool batadv_is_on_batman_iface(const struct net_device *net_dev)
dev_get_iflink(net_dev) == net_dev->ifindex)
return false;
+ if (net_dev->rtnl_link_ops && net_dev->rtnl_link_ops->get_link_net)
+ parent_net = net_dev->rtnl_link_ops->get_link_net(net_dev);
+
/* recurse over the parent device */
- parent_dev = __dev_get_by_index(net, dev_get_iflink(net_dev));
+ parent_dev = __dev_get_by_index(parent_net, dev_get_iflink(net_dev));
/* if we got a NULL parent_dev there is something broken.. */
if (WARN(!parent_dev, "Cannot find parent device"))
return false;
- if (batadv_mutual_parents(net_dev, parent_dev))
+ if (batadv_mutual_parents(net_dev, net, parent_dev, parent_net))
return false;
ret = batadv_is_on_batman_iface(parent_dev);
--
2.8.0.rc3
next prev parent reply other threads:[~2016-04-28 20:37 UTC|newest]
Thread overview: 36+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-28 20:37 [B.A.T.M.A.N.] [PATCH 00/10] netns and netlink support Andrew Lunn
2016-04-28 20:37 ` Andrew Lunn [this message]
2016-04-29 5:52 ` [B.A.T.M.A.N.] [PATCH 01/10] batman-adv: Handle parent interfaces in a different netns Sven Eckelmann
2016-04-29 12:14 ` Andrew Lunn
2016-04-29 12:59 ` Sven Eckelmann
2016-04-29 19:51 ` Sven Eckelmann
2016-04-29 19:14 ` Sven Eckelmann
2016-04-28 20:37 ` [B.A.T.M.A.N.] [PATCH 02/10] batman-adv: Suppress debugfs entries for netns's Andrew Lunn
2016-04-29 18:07 ` Sven Eckelmann
2016-04-29 18:53 ` Andrew Lunn
2016-04-29 19:14 ` Sven Eckelmann
2016-04-28 20:37 ` [B.A.T.M.A.N.] [PATCH 03/10] batman-adv: add generic netlink query API to replace debugfs files Andrew Lunn
2016-04-29 18:11 ` Sven Eckelmann
2016-04-29 19:15 ` Sven Eckelmann
2016-04-29 19:55 ` Sven Eckelmann
2016-04-29 20:15 ` Sven Eckelmann
2016-04-29 20:26 ` Sven Eckelmann
2016-04-28 20:37 ` [B.A.T.M.A.N.] [PATCH 04/10] batman-adv: netlink: add translation table query Andrew Lunn
2016-04-29 19:15 ` Sven Eckelmann
2016-04-28 20:37 ` [B.A.T.M.A.N.] [PATCH 05/10] batman-adv: netlink: add originator and neighbor table queries Andrew Lunn
2016-04-29 19:15 ` Sven Eckelmann
2016-04-29 21:05 ` Sven Eckelmann
2016-04-28 20:37 ` [B.A.T.M.A.N.] [PATCH 06/10] batman-adv: add B.A.T.M.A.N. IV bat_{orig, neigh}_dump implementations Andrew Lunn
2016-04-29 19:15 ` Sven Eckelmann
2016-04-28 20:37 ` [B.A.T.M.A.N.] [PATCH 07/10] batman-adv: add B.A.T.M.A.N. V " Andrew Lunn
2016-04-29 19:15 ` Sven Eckelmann
2016-04-28 20:37 ` [B.A.T.M.A.N.] [PATCH 08/10] batman-adv: Indicate netlink socket can be used with netns Andrew Lunn
2016-04-28 20:37 ` [B.A.T.M.A.N.] [PATCH 09/10] batman-adv: add B.A.T.M.A.N. Dump gateways via netlink Andrew Lunn
2016-04-29 19:15 ` Sven Eckelmann
2016-04-29 20:36 ` Sven Eckelmann
2016-04-28 20:37 ` [B.A.T.M.A.N.] [PATCH 10/10] batman-adv: add B.A.T.M.A.N. Dump BLA claims " Andrew Lunn
2016-04-29 19:15 ` Sven Eckelmann
2016-04-29 21:07 ` Sven Eckelmann
2016-04-29 21:56 ` Andrew Lunn
2016-04-28 20:46 ` [B.A.T.M.A.N.] [PATCH 00/10] netns and netlink support Andrew Lunn
2016-04-29 6:19 ` Sven Eckelmann
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