Interface groups let handle different interfaces with one (netfilter) rule.
Modified net device structure and netlink interface.
Signed-off-by: Laszlo Attila Toth <panther@xxxxxxxxxx>
---
include/linux/if_link.h | 2 ++
include/linux/netdevice.h | 2 ++
net/core/rtnetlink.c | 8 ++++++++
3 files changed, 12 insertions(+), 0 deletions(-)
diff --git a/include/linux/if_link.h b/include/linux/if_link.h
index 422084d..d9f1726 100644
--- a/include/linux/if_link.h
+++ b/include/linux/if_link.h
@@ -78,6 +78,8 @@ enum
IFLA_LINKMODE,
IFLA_LINKINFO,
#define IFLA_LINKINFO IFLA_LINKINFO
+ IFLA_IFGROUP,
+#define IFLA_IFGROUP IFLA_IFGROUP
__IFLA_MAX
};
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index e679b27..4cfc697 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -365,6 +365,8 @@ struct net_device
/* Interface index. Unique device identifier */
int ifindex;
int iflink;
+ /* interface group this interface belongs to */
+ int ifgroup;
struct net_device_stats* (*get_stats)(struct net_device *dev);
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 4756d58..18ff3c5 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -646,6 +646,9 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
if (dev->master)
NLA_PUT_U32(skb, IFLA_MASTER, dev->master->ifindex);
+ if (dev->ifgroup)
+ NLA_PUT_U32(skb, IFLA_IFGROUP, dev->ifgroup);
+
if (dev->qdisc_sleeping)
NLA_PUT_STRING(skb, IFLA_QDISC, dev->qdisc_sleeping->ops->id);
@@ -846,6 +849,11 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
write_unlock_bh(&dev_base_lock);
}
+ if (tb[IFLA_IFGROUP]) {
+ dev->ifgroup = nla_get_u32(tb[IFLA_IFGROUP ]);
+ rtmsg_ifinfo(RTM_NEWLINK, dev, 0);
+ }
+
err = 0;
errout:
--
1.5.2.5
-
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