#include <linux/security.h>
#include <linux/mutex.h>
#include <linux/if_addr.h>
+#include <linux/nsproxy.h>
#include <asm/uaccess.h>
#include <asm/system.h>
void rtnl_unlock(void)
{
mutex_unlock(&rtnl_mutex);
- if (rtnl && rtnl->sk_receive_queue.qlen)
- rtnl->sk_data_ready(rtnl, 0);
netdev_run_todo();
}
}
int __rtattr_parse_nested_compat(struct rtattr *tb[], int maxattr,
- struct rtattr *rta, int len)
+ struct rtattr *rta, int len)
{
if (RTA_PAYLOAD(rta) < len)
return -1;
void __rtnl_link_unregister(struct rtnl_link_ops *ops)
{
struct net_device *dev, *n;
-
- for_each_netdev_safe(dev, n) {
- if (dev->rtnl_link_ops == ops)
- ops->dellink(dev);
+ struct net *net;
+
+ for_each_net(net) {
+restart:
+ for_each_netdev_safe(net, dev, n) {
+ if (dev->rtnl_link_ops == ops) {
+ ops->dellink(dev);
+ goto restart;
+ }
+ }
}
list_del(&ops->list);
}
NLA_PUT_STRING(skb, IFLA_IFNAME, dev->name);
NLA_PUT_U32(skb, IFLA_TXQLEN, dev->tx_queue_len);
- NLA_PUT_U32(skb, IFLA_WEIGHT, dev->weight);
NLA_PUT_U8(skb, IFLA_OPERSTATE,
netif_running(dev) ? dev->operstate : IF_OPER_DOWN);
NLA_PUT_U8(skb, IFLA_LINKMODE, dev->link_mode);
static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
{
+ struct net *net = skb->sk->sk_net;
int idx;
int s_idx = cb->args[0];
struct net_device *dev;
idx = 0;
- for_each_netdev(dev) {
+ for_each_netdev(net, dev) {
if (idx < s_idx)
goto cont;
if (rtnl_fill_ifinfo(skb, dev, RTM_NEWLINK,
return skb->len;
}
-static const struct nla_policy ifla_policy[IFLA_MAX+1] = {
+const struct nla_policy ifla_policy[IFLA_MAX+1] = {
[IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 },
[IFLA_ADDRESS] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
[IFLA_BROADCAST] = { .type = NLA_BINARY, .len = MAX_ADDR_LEN },
[IFLA_WEIGHT] = { .type = NLA_U32 },
[IFLA_OPERSTATE] = { .type = NLA_U8 },
[IFLA_LINKMODE] = { .type = NLA_U8 },
+ [IFLA_NET_NS_PID] = { .type = NLA_U32 },
};
static const struct nla_policy ifla_info_policy[IFLA_INFO_MAX+1] = {
[IFLA_INFO_DATA] = { .type = NLA_NESTED },
};
+static struct net *get_net_ns_by_pid(pid_t pid)
+{
+ struct task_struct *tsk;
+ struct net *net;
+
+ /* Lookup the network namespace */
+ net = ERR_PTR(-ESRCH);
+ rcu_read_lock();
+ tsk = find_task_by_vpid(pid);
+ if (tsk) {
+ struct nsproxy *nsproxy;
+ nsproxy = task_nsproxy(tsk);
+ if (nsproxy)
+ net = get_net(nsproxy->net_ns);
+ }
+ rcu_read_unlock();
+ return net;
+}
+
static int do_setlink(struct net_device *dev, struct ifinfomsg *ifm,
struct nlattr **tb, char *ifname, int modified)
{
int send_addr_notify = 0;
int err;
+ if (tb[IFLA_NET_NS_PID]) {
+ struct net *net;
+ net = get_net_ns_by_pid(nla_get_u32(tb[IFLA_NET_NS_PID]));
+ if (IS_ERR(net)) {
+ err = PTR_ERR(net);
+ goto errout;
+ }
+ err = dev_change_net_namespace(dev, net, ifname);
+ put_net(net);
+ if (err)
+ goto errout;
+ modified = 1;
+ }
+
if (tb[IFLA_MAP]) {
struct rtnl_link_ifmap *u_map;
struct ifmap k_map;
if (tb[IFLA_TXQLEN])
dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
- if (tb[IFLA_WEIGHT])
- dev->weight = nla_get_u32(tb[IFLA_WEIGHT]);
-
if (tb[IFLA_OPERSTATE])
set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
+ struct net *net = skb->sk->sk_net;
struct ifinfomsg *ifm;
struct net_device *dev;
int err;
err = -EINVAL;
ifm = nlmsg_data(nlh);
if (ifm->ifi_index > 0)
- dev = dev_get_by_index(ifm->ifi_index);
+ dev = dev_get_by_index(net, ifm->ifi_index);
else if (tb[IFLA_IFNAME])
- dev = dev_get_by_name(ifname);
+ dev = dev_get_by_name(net, ifname);
else
goto errout;
static int rtnl_dellink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
+ struct net *net = skb->sk->sk_net;
const struct rtnl_link_ops *ops;
struct net_device *dev;
struct ifinfomsg *ifm;
ifm = nlmsg_data(nlh);
if (ifm->ifi_index > 0)
- dev = __dev_get_by_index(ifm->ifi_index);
+ dev = __dev_get_by_index(net, ifm->ifi_index);
else if (tb[IFLA_IFNAME])
- dev = __dev_get_by_name(ifname);
+ dev = __dev_get_by_name(net, ifname);
else
return -EINVAL;
return 0;
}
+struct net_device *rtnl_create_link(struct net *net, char *ifname,
+ const struct rtnl_link_ops *ops, struct nlattr *tb[])
+{
+ int err;
+ struct net_device *dev;
+
+ err = -ENOMEM;
+ dev = alloc_netdev(ops->priv_size, ifname, ops->setup);
+ if (!dev)
+ goto err;
+
+ if (strchr(dev->name, '%')) {
+ err = dev_alloc_name(dev, dev->name);
+ if (err < 0)
+ goto err_free;
+ }
+
+ dev->nd_net = net;
+ dev->rtnl_link_ops = ops;
+
+ if (tb[IFLA_MTU])
+ dev->mtu = nla_get_u32(tb[IFLA_MTU]);
+ if (tb[IFLA_ADDRESS])
+ memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]),
+ nla_len(tb[IFLA_ADDRESS]));
+ if (tb[IFLA_BROADCAST])
+ memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]),
+ nla_len(tb[IFLA_BROADCAST]));
+ if (tb[IFLA_TXQLEN])
+ dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
+ if (tb[IFLA_OPERSTATE])
+ set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
+ if (tb[IFLA_LINKMODE])
+ dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
+
+ return dev;
+
+err_free:
+ free_netdev(dev);
+err:
+ return ERR_PTR(err);
+}
+
static int rtnl_newlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
+ struct net *net = skb->sk->sk_net;
const struct rtnl_link_ops *ops;
struct net_device *dev;
struct ifinfomsg *ifm;
struct nlattr *linkinfo[IFLA_INFO_MAX+1];
int err;
+#ifdef CONFIG_KMOD
replay:
+#endif
err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
if (err < 0)
return err;
ifm = nlmsg_data(nlh);
if (ifm->ifi_index > 0)
- dev = __dev_get_by_index(ifm->ifi_index);
+ dev = __dev_get_by_index(net, ifm->ifi_index);
else if (ifname[0])
- dev = __dev_get_by_name(ifname);
+ dev = __dev_get_by_name(net, ifname);
else
dev = NULL;
if (!ifname[0])
snprintf(ifname, IFNAMSIZ, "%s%%d", ops->kind);
- dev = alloc_netdev(ops->priv_size, ifname, ops->setup);
- if (!dev)
- return -ENOMEM;
-
- if (strchr(dev->name, '%')) {
- err = dev_alloc_name(dev, dev->name);
- if (err < 0)
- goto err_free;
- }
- dev->rtnl_link_ops = ops;
-
- if (tb[IFLA_MTU])
- dev->mtu = nla_get_u32(tb[IFLA_MTU]);
- if (tb[IFLA_ADDRESS])
- memcpy(dev->dev_addr, nla_data(tb[IFLA_ADDRESS]),
- nla_len(tb[IFLA_ADDRESS]));
- if (tb[IFLA_BROADCAST])
- memcpy(dev->broadcast, nla_data(tb[IFLA_BROADCAST]),
- nla_len(tb[IFLA_BROADCAST]));
- if (tb[IFLA_TXQLEN])
- dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
- if (tb[IFLA_WEIGHT])
- dev->weight = nla_get_u32(tb[IFLA_WEIGHT]);
- if (tb[IFLA_OPERSTATE])
- set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
- if (tb[IFLA_LINKMODE])
- dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
-
- if (ops->newlink)
+
+ dev = rtnl_create_link(net, ifname, ops, tb);
+
+ if (IS_ERR(dev))
+ err = PTR_ERR(dev);
+ else if (ops->newlink)
err = ops->newlink(dev, tb, data);
else
err = register_netdevice(dev);
-err_free:
- if (err < 0)
+
+ if (err < 0 && !IS_ERR(dev))
free_netdev(dev);
return err;
}
static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
{
+ struct net *net = skb->sk->sk_net;
struct ifinfomsg *ifm;
struct nlattr *tb[IFLA_MAX+1];
struct net_device *dev = NULL;
ifm = nlmsg_data(nlh);
if (ifm->ifi_index > 0) {
- dev = dev_get_by_index(ifm->ifi_index);
+ dev = dev_get_by_index(net, ifm->ifi_index);
if (dev == NULL)
return -ENODEV;
} else
return doit(skb, nlh, (void *)&rta_buf[0]);
}
-static void rtnetlink_rcv(struct sock *sk, int len)
+static void rtnetlink_rcv(struct sk_buff *skb)
{
- unsigned int qlen = 0;
-
- do {
- mutex_lock(&rtnl_mutex);
- netlink_run_queue(sk, &qlen, &rtnetlink_rcv_msg);
- mutex_unlock(&rtnl_mutex);
-
- netdev_run_todo();
- } while (qlen);
+ rtnl_lock();
+ netlink_rcv_skb(skb, &rtnetlink_rcv_msg);
+ rtnl_unlock();
}
static int rtnetlink_event(struct notifier_block *this, unsigned long event, void *ptr)
{
struct net_device *dev = ptr;
+
+ if (dev->nd_net != &init_net)
+ return NOTIFY_DONE;
+
switch (event) {
case NETDEV_UNREGISTER:
rtmsg_ifinfo(RTM_DELLINK, dev, ~0U);
if (!rta_buf)
panic("rtnetlink_init: cannot allocate rta_buf\n");
- rtnl = netlink_kernel_create(NETLINK_ROUTE, RTNLGRP_MAX, rtnetlink_rcv,
- &rtnl_mutex, THIS_MODULE);
+ rtnl = netlink_kernel_create(&init_net, NETLINK_ROUTE, RTNLGRP_MAX,
+ rtnetlink_rcv, &rtnl_mutex, THIS_MODULE);
if (rtnl == NULL)
panic("rtnetlink_init: cannot initialize rtnetlink\n");
netlink_set_nonroot(NETLINK_ROUTE, NL_NONROOT_RECV);
EXPORT_SYMBOL(rtnl_unicast);
EXPORT_SYMBOL(rtnl_notify);
EXPORT_SYMBOL(rtnl_set_sk_err);
+EXPORT_SYMBOL(rtnl_create_link);
+EXPORT_SYMBOL(ifla_policy);
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff