Interface groups let handle different interfaces together.
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 | 11 +++++++++++
3 files changed, 15 insertions(+), 0 deletions(-)
diff --git a/include/linux/if_link.h b/include/linux/if_link.h
index 84c3492..722b25c 100644
--- a/include/linux/if_link.h
+++ b/include/linux/if_link.h
@@ -79,6 +79,8 @@ enum
IFLA_LINKINFO,
#define IFLA_LINKINFO IFLA_LINKINFO
IFLA_NET_NS_PID,
+ IFLA_IFGROUP,
+#define IFLA_IFGROUP IFLA_IFGROUP
__IFLA_MAX
};
diff --git a/include/linux/netdevice.h b/include/linux/netdevice.h
index 1e6af4f..b1bdcb2 100644
--- a/include/linux/netdevice.h
+++ b/include/linux/netdevice.h
@@ -519,6 +519,8 @@ struct net_device
/* Interface index. Unique device identifier */
int ifindex;
int iflink;
+ /* interface group this interface belongs to */
+ u_int32_t ifgroup;
struct net_device_stats* (*get_stats)(struct net_device *dev);
diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 20cb67e..a710813 100644
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -614,6 +614,7 @@ static inline size_t if_nlmsg_size(const struct net_device *dev)
+ nla_total_size(4) /* IFLA_MTU */
+ nla_total_size(4) /* IFLA_LINK */
+ nla_total_size(4) /* IFLA_MASTER */
+ + nla_total_size(4) /* IFLA_IFGROUP */
+ nla_total_size(1) /* IFLA_OPERSTATE */
+ nla_total_size(1) /* IFLA_LINKMODE */
+ rtnl_link_get_size(dev); /* IFLA_LINKINFO */
@@ -651,6 +652,9 @@ 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);
@@ -890,6 +894,13 @@ static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
}
}
+ if (tb[IFLA_IFGROUP]) {
+ if (dev->ifgroup != nla_get_u32(tb[IFLA_IFGROUP])) {
+ dev->ifgroup = nla_get_u32(tb[IFLA_IFGROUP]);
+ modified = 1;
+ }
+ }
+
err = 0;
errout:
--
1.5.2.5
-
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