/*
* NET3 IP device support routines.
*
- * Version: $Id: devinet.c,v 1.44 2001/10/31 21:55:54 davem Exp $
- *
* This program is free software; you can redistribute it and/or
* modify it under the terms of the GNU General Public License
* as published by the Free Software Foundation; either version
[IFA_LOCAL] = { .type = NLA_U32 },
[IFA_ADDRESS] = { .type = NLA_U32 },
[IFA_BROADCAST] = { .type = NLA_U32 },
- [IFA_ANYCAST] = { .type = NLA_U32 },
[IFA_LABEL] = { .type = NLA_STRING, .len = IFNAMSIZ - 1 },
};
static struct in_ifaddr *inet_alloc_ifa(void)
{
- struct in_ifaddr *ifa = kzalloc(sizeof(*ifa), GFP_KERNEL);
-
- if (ifa) {
- INIT_RCU_HEAD(&ifa->rcu_head);
- }
-
- return ifa;
+ return kzalloc(sizeof(struct in_ifaddr), GFP_KERNEL);
}
static void inet_rcu_free_ifa(struct rcu_head *head)
{
struct net_device *dev = idev->dev;
- BUG_TRAP(!idev->ifa_list);
- BUG_TRAP(!idev->mc_list);
+ WARN_ON(idev->ifa_list);
+ WARN_ON(idev->mc_list);
#ifdef NET_REFCNT_DEBUG
printk(KERN_DEBUG "in_dev_finish_destroy: %p=%s\n",
idev, dev ? dev->name : "NIL");
in_dev = kzalloc(sizeof(*in_dev), GFP_KERNEL);
if (!in_dev)
goto out;
- INIT_RCU_HEAD(&in_dev->rcu_head);
memcpy(&in_dev->cnf, dev_net(dev)->ipv4.devconf_dflt,
sizeof(in_dev->cnf));
in_dev->cnf.sysctl = NULL;
in_dev->dev = dev;
if ((in_dev->arp_parms = neigh_parms_alloc(dev, &arp_tbl)) == NULL)
goto out_kfree;
+ if (IPV4_DEVCONF(in_dev->cnf, FORWARDING))
+ dev_disable_lro(dev);
/* Reference in_dev->dev */
dev_hold(dev);
/* Account for reference dev->ip_ptr (below) */
}
ipv4_devconf_setall(in_dev);
if (ifa->ifa_dev != in_dev) {
- BUG_TRAP(!ifa->ifa_dev);
+ WARN_ON(ifa->ifa_dev);
in_dev_hold(in_dev);
ifa->ifa_dev = in_dev;
}
static int inet_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
- struct net *net = skb->sk->sk_net;
+ struct net *net = sock_net(skb->sk);
struct nlattr *tb[IFA_MAX+1];
struct in_device *in_dev;
struct ifaddrmsg *ifm;
if (tb[IFA_BROADCAST])
ifa->ifa_broadcast = nla_get_be32(tb[IFA_BROADCAST]);
- if (tb[IFA_ANYCAST])
- ifa->ifa_anycast = nla_get_be32(tb[IFA_ANYCAST]);
-
if (tb[IFA_LABEL])
nla_strlcpy(ifa->ifa_label, tb[IFA_LABEL], IFNAMSIZ);
else
static int inet_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
- struct net *net = skb->sk->sk_net;
+ struct net *net = sock_net(skb->sk);
struct in_ifaddr *ifa;
ASSERT_RTNL();
if (colon)
*colon = 0;
-#ifdef CONFIG_KMOD
dev_load(net, ifr.ifr_name);
-#endif
switch (cmd) {
case SIOCGIFADDR: /* Get interface address */
break;
inet_del_ifa(in_dev, ifap, 0);
ifa->ifa_broadcast = 0;
- ifa->ifa_anycast = 0;
ifa->ifa_scope = 0;
}
memcpy(old, ifa->ifa_label, IFNAMSIZ);
memcpy(ifa->ifa_label, dev->name, IFNAMSIZ);
if (named++ == 0)
- continue;
+ goto skip;
dot = strchr(old, ':');
if (dot == NULL) {
sprintf(old, ":%d", named);
} else {
strcpy(ifa->ifa_label + (IFNAMSIZ - strlen(dot) - 1), dot);
}
+skip:
+ rtmsg_ifa(RTM_NEWADDR, ifa, NULL, 0);
}
}
+static inline bool inetdev_valid_mtu(unsigned mtu)
+{
+ return mtu >= 68;
+}
+
/* Called only under RTNL semaphore */
static int inetdev_event(struct notifier_block *this, unsigned long event,
IN_DEV_CONF_SET(in_dev, NOXFRM, 1);
IN_DEV_CONF_SET(in_dev, NOPOLICY, 1);
}
+ } else if (event == NETDEV_CHANGEMTU) {
+ /* Re-enabling IP */
+ if (inetdev_valid_mtu(dev->mtu))
+ in_dev = inetdev_init(dev);
}
goto out;
}
dev->ip_ptr = NULL;
break;
case NETDEV_UP:
- if (dev->mtu < 68)
+ if (!inetdev_valid_mtu(dev->mtu))
break;
if (dev->flags & IFF_LOOPBACK) {
struct in_ifaddr *ifa;
ip_mc_down(in_dev);
break;
case NETDEV_CHANGEMTU:
- if (dev->mtu >= 68)
+ if (inetdev_valid_mtu(dev->mtu))
break;
- /* MTU falled under 68, disable IP */
+ /* disable IP when MTU is not enough */
case NETDEV_UNREGISTER:
inetdev_destroy(in_dev);
break;
}
static struct notifier_block ip_netdev_notifier = {
- .notifier_call =inetdev_event,
+ .notifier_call = inetdev_event,
};
static inline size_t inet_nlmsg_size(void)
+ nla_total_size(4) /* IFA_ADDRESS */
+ nla_total_size(4) /* IFA_LOCAL */
+ nla_total_size(4) /* IFA_BROADCAST */
- + nla_total_size(4) /* IFA_ANYCAST */
+ nla_total_size(IFNAMSIZ); /* IFA_LABEL */
}
if (ifa->ifa_broadcast)
NLA_PUT_BE32(skb, IFA_BROADCAST, ifa->ifa_broadcast);
- if (ifa->ifa_anycast)
- NLA_PUT_BE32(skb, IFA_ANYCAST, ifa->ifa_anycast);
-
if (ifa->ifa_label[0])
NLA_PUT_STRING(skb, IFA_LABEL, ifa->ifa_label);
static int inet_dump_ifaddr(struct sk_buff *skb, struct netlink_callback *cb)
{
- struct net *net = skb->sk->sk_net;
+ struct net *net = sock_net(skb->sk);
int idx, ip_idx;
struct net_device *dev;
struct in_device *in_dev;
return skb->len;
}
-static void rtmsg_ifa(int event, struct in_ifaddr* ifa, struct nlmsghdr *nlh,
+static void rtmsg_ifa(int event, struct in_ifaddr *ifa, struct nlmsghdr *nlh,
u32 pid)
{
struct sk_buff *skb;
read_lock(&dev_base_lock);
for_each_netdev(net, dev) {
struct in_device *in_dev;
+ if (on)
+ dev_disable_lro(dev);
rcu_read_lock();
in_dev = __in_dev_get_rcu(dev);
if (in_dev)
rcu_read_unlock();
}
read_unlock(&dev_base_lock);
-
- rt_cache_flush(0);
}
static int devinet_conf_proc(ctl_table *ctl, int write,
- struct file* filp, void __user *buffer,
+ struct file *filp, void __user *buffer,
size_t *lenp, loff_t *ppos)
{
int ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
return ret;
}
-static int devinet_conf_sysctl(ctl_table *table, int __user *name, int nlen,
+static int devinet_conf_sysctl(ctl_table *table,
void __user *oldval, size_t __user *oldlenp,
void __user *newval, size_t newlen)
{
}
static int devinet_sysctl_forward(ctl_table *ctl, int write,
- struct file* filp, void __user *buffer,
+ struct file *filp, void __user *buffer,
size_t *lenp, loff_t *ppos)
{
int *valp = ctl->data;
if (write && *valp != val) {
struct net *net = ctl->extra2;
- if (valp == &IPV4_DEVCONF_ALL(net, FORWARDING))
- inet_forward_change(net);
- else if (valp != &IPV4_DEVCONF_DFLT(net, FORWARDING))
- rt_cache_flush(0);
+ if (valp != &IPV4_DEVCONF_DFLT(net, FORWARDING)) {
+ rtnl_lock();
+ if (valp == &IPV4_DEVCONF_ALL(net, FORWARDING)) {
+ inet_forward_change(net);
+ } else if (*valp) {
+ struct ipv4_devconf *cnf = ctl->extra1;
+ struct in_device *idev =
+ container_of(cnf, struct in_device, cnf);
+ dev_disable_lro(idev->dev);
+ }
+ rtnl_unlock();
+ rt_cache_flush(net, 0);
+ }
}
return ret;
}
int ipv4_doint_and_flush(ctl_table *ctl, int write,
- struct file* filp, void __user *buffer,
+ struct file *filp, void __user *buffer,
size_t *lenp, loff_t *ppos)
{
int *valp = ctl->data;
int val = *valp;
int ret = proc_dointvec(ctl, write, filp, buffer, lenp, ppos);
+ struct net *net = ctl->extra2;
if (write && *valp != val)
- rt_cache_flush(0);
+ rt_cache_flush(net, 0);
return ret;
}
-int ipv4_doint_and_flush_strategy(ctl_table *table, int __user *name, int nlen,
+int ipv4_doint_and_flush_strategy(ctl_table *table,
void __user *oldval, size_t __user *oldlenp,
void __user *newval, size_t newlen)
{
- int ret = devinet_conf_sysctl(table, name, nlen, oldval, oldlenp,
- newval, newlen);
+ int ret = devinet_conf_sysctl(table, oldval, oldlenp, newval, newlen);
+ struct net *net = table->extra2;
if (ret == 1)
- rt_cache_flush(0);
+ rt_cache_flush(net, 0);
return ret;
}
git://ftp.safe.ca / safe / jmp / linux-2.6 / blobdiff