Patrick McHardy
3729d50212
commit e8469ed959c373c2ff9e6f488aa5a14971aebe1f
Author: Patrick McHardy <kaber@trash.net>
Date: Tue Feb 23 20:41:30 2010 +0100
Support specifying the initial device flags when creating a device though
rtnl_link. Devices allocated by rtnl_create_link() are marked as INITIALIZING
in order to surpress netlink registration notifications. To complete setup,
rtnl_configure_link() must be called, which performs the device flag changes
and invokes the deferred notifiers if everything went well.
Two examples:
# add macvlan to eth0
#
$ ip link add link eth0 up allmulticast on type macvlan
[LINK]11: macvlan0@eth0: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500 qdisc noqueue state UNKNOWN
link/ether 26:f8:84:02:f9:2a brd ff:ff:ff:ff:ff:ff
[ROUTE]ff00::/8 dev macvlan0 table local metric 256 mtu 1500 advmss 1440 hoplimit 0
[ROUTE]fe80::/64 dev macvlan0 proto kernel metric 256 mtu 1500 advmss 1440 hoplimit 0
[LINK]11: macvlan0@eth0: <BROADCAST,MULTICAST,ALLMULTI,UP,LOWER_UP> mtu 1500
link/ether 26:f8:84:02:f9:2a
[ADDR]11: macvlan0 inet6 fe80::24f8:84ff:fe02:f92a/64 scope link
valid_lft forever preferred_lft forever
[ROUTE]local fe80::24f8:84ff:fe02:f92a via :: dev lo table local proto none metric 0 mtu 16436 advmss 16376 hoplimit 0
[ROUTE]default via fe80::215:e9ff:fef0:10f8 dev macvlan0 proto kernel metric 1024 mtu 1500 advmss 1440 hoplimit 0
[NEIGH]fe80::215:e9ff:fef0:10f8 dev macvlan0 lladdr 00:15:e9:f0:10:f8 router STALE
[ROUTE]2001:6f8:974::/64 dev macvlan0 proto kernel metric 256 expires 0sec mtu 1500 advmss 1440 hoplimit 0
[PREFIX]prefix 2001:6f8:974::/64 dev macvlan0 onlink autoconf valid 14400 preferred 131084
[ADDR]11: macvlan0 inet6 2001:6f8:974:0:24f8:84ff:fe02:f92a/64 scope global dynamic
valid_lft 86399sec preferred_lft 14399sec
# add VLAN to eth1, eth1 is down
#
$ ip link add link eth1 up type vlan id 1000
RTNETLINK answers: Network is down
<no events>
Signed-off-by: Patrick McHardy <kaber@trash.net>
Signed-off-by: David S. Miller <davem@davemloft.net>
97 lines
3.4 KiB
C
97 lines
3.4 KiB
C
#ifndef __NET_RTNETLINK_H
|
|
#define __NET_RTNETLINK_H
|
|
|
|
#include <linux/rtnetlink.h>
|
|
#include <net/netlink.h>
|
|
|
|
typedef int (*rtnl_doit_func)(struct sk_buff *, struct nlmsghdr *, void *);
|
|
typedef int (*rtnl_dumpit_func)(struct sk_buff *, struct netlink_callback *);
|
|
|
|
extern int __rtnl_register(int protocol, int msgtype,
|
|
rtnl_doit_func, rtnl_dumpit_func);
|
|
extern void rtnl_register(int protocol, int msgtype,
|
|
rtnl_doit_func, rtnl_dumpit_func);
|
|
extern int rtnl_unregister(int protocol, int msgtype);
|
|
extern void rtnl_unregister_all(int protocol);
|
|
|
|
static inline int rtnl_msg_family(const struct nlmsghdr *nlh)
|
|
{
|
|
if (nlmsg_len(nlh) >= sizeof(struct rtgenmsg))
|
|
return ((struct rtgenmsg *) nlmsg_data(nlh))->rtgen_family;
|
|
else
|
|
return AF_UNSPEC;
|
|
}
|
|
|
|
/**
|
|
* struct rtnl_link_ops - rtnetlink link operations
|
|
*
|
|
* @list: Used internally
|
|
* @kind: Identifier
|
|
* @maxtype: Highest device specific netlink attribute number
|
|
* @policy: Netlink policy for device specific attribute validation
|
|
* @validate: Optional validation function for netlink/changelink parameters
|
|
* @priv_size: sizeof net_device private space
|
|
* @setup: net_device setup function
|
|
* @newlink: Function for configuring and registering a new device
|
|
* @changelink: Function for changing parameters of an existing device
|
|
* @dellink: Function to remove a device
|
|
* @get_size: Function to calculate required room for dumping device
|
|
* specific netlink attributes
|
|
* @fill_info: Function to dump device specific netlink attributes
|
|
* @get_xstats_size: Function to calculate required room for dumping devic
|
|
* specific statistics
|
|
* @fill_xstats: Function to dump device specific statistics
|
|
*/
|
|
struct rtnl_link_ops {
|
|
struct list_head list;
|
|
|
|
const char *kind;
|
|
|
|
size_t priv_size;
|
|
void (*setup)(struct net_device *dev);
|
|
|
|
int maxtype;
|
|
const struct nla_policy *policy;
|
|
int (*validate)(struct nlattr *tb[],
|
|
struct nlattr *data[]);
|
|
|
|
int (*newlink)(struct net *src_net,
|
|
struct net_device *dev,
|
|
struct nlattr *tb[],
|
|
struct nlattr *data[]);
|
|
int (*changelink)(struct net_device *dev,
|
|
struct nlattr *tb[],
|
|
struct nlattr *data[]);
|
|
void (*dellink)(struct net_device *dev,
|
|
struct list_head *head);
|
|
|
|
size_t (*get_size)(const struct net_device *dev);
|
|
int (*fill_info)(struct sk_buff *skb,
|
|
const struct net_device *dev);
|
|
|
|
size_t (*get_xstats_size)(const struct net_device *dev);
|
|
int (*fill_xstats)(struct sk_buff *skb,
|
|
const struct net_device *dev);
|
|
int (*get_tx_queues)(struct net *net, struct nlattr *tb[],
|
|
unsigned int *tx_queues,
|
|
unsigned int *real_tx_queues);
|
|
};
|
|
|
|
extern int __rtnl_link_register(struct rtnl_link_ops *ops);
|
|
extern void __rtnl_link_unregister(struct rtnl_link_ops *ops);
|
|
extern void rtnl_kill_links(struct net *net, struct rtnl_link_ops *ops);
|
|
|
|
extern int rtnl_link_register(struct rtnl_link_ops *ops);
|
|
extern void rtnl_link_unregister(struct rtnl_link_ops *ops);
|
|
|
|
extern struct net *rtnl_link_get_net(struct net *src_net, struct nlattr *tb[]);
|
|
extern struct net_device *rtnl_create_link(struct net *src_net, struct net *net,
|
|
char *ifname, const struct rtnl_link_ops *ops, struct nlattr *tb[]);
|
|
extern int rtnl_configure_link(struct net_device *dev,
|
|
const struct ifinfomsg *ifm);
|
|
extern const struct nla_policy ifla_policy[IFLA_MAX+1];
|
|
|
|
#define MODULE_ALIAS_RTNL_LINK(kind) MODULE_ALIAS("rtnl-link-" kind)
|
|
|
|
#endif
|