#include <net/pkt_sched.h>
#include <linux/if_tunnel.h>
#include <linux/rtnetlink.h>
+#include <linux/netconf.h>
#ifdef CONFIG_IPV6_PRIVACY
#include <linux/random.h>
return idev;
}
+static int inet6_netconf_msgsize_devconf(int type)
+{
+ int size = NLMSG_ALIGN(sizeof(struct netconfmsg))
+ + nla_total_size(4); /* NETCONFA_IFINDEX */
+
+ /* type -1 is used for ALL */
+ if (type == -1 || type == NETCONFA_FORWARDING)
+ size += nla_total_size(4);
+
+ return size;
+}
+
+static int inet6_netconf_fill_devconf(struct sk_buff *skb, int ifindex,
+ struct ipv6_devconf *devconf, u32 portid,
+ u32 seq, int event, unsigned int flags,
+ int type)
+{
+ struct nlmsghdr *nlh;
+ struct netconfmsg *ncm;
+
+ nlh = nlmsg_put(skb, portid, seq, event, sizeof(struct netconfmsg),
+ flags);
+ if (nlh == NULL)
+ return -EMSGSIZE;
+
+ ncm = nlmsg_data(nlh);
+ ncm->ncm_family = AF_INET6;
+
+ if (nla_put_s32(skb, NETCONFA_IFINDEX, ifindex) < 0)
+ goto nla_put_failure;
+
+ /* type -1 is used for ALL */
+ if ((type == -1 || type == NETCONFA_FORWARDING) &&
+ nla_put_s32(skb, NETCONFA_FORWARDING, devconf->forwarding) < 0)
+ goto nla_put_failure;
+
+ return nlmsg_end(skb, nlh);
+
+nla_put_failure:
+ nlmsg_cancel(skb, nlh);
+ return -EMSGSIZE;
+}
+
+static void inet6_netconf_notify_devconf(struct net *net, int type, int ifindex,
+ struct ipv6_devconf *devconf)
+{
+ struct sk_buff *skb;
+ int err = -ENOBUFS;
+
+ skb = nlmsg_new(inet6_netconf_msgsize_devconf(type), GFP_ATOMIC);
+ if (skb == NULL)
+ goto errout;
+
+ err = inet6_netconf_fill_devconf(skb, ifindex, devconf, 0, 0,
+ RTM_NEWNETCONF, 0, type);
+ if (err < 0) {
+ /* -EMSGSIZE implies BUG in inet6_netconf_msgsize_devconf() */
+ WARN_ON(err == -EMSGSIZE);
+ kfree_skb(skb);
+ goto errout;
+ }
+ rtnl_notify(skb, net, 0, RTNLGRP_IPV6_NETCONF, NULL, GFP_ATOMIC);
+ return;
+errout:
+ if (err < 0)
+ rtnl_set_sk_err(net, RTNLGRP_IPV6_NETCONF, err);
+}
+
+static const struct nla_policy devconf_ipv6_policy[NETCONFA_MAX+1] = {
+ [NETCONFA_IFINDEX] = { .len = sizeof(int) },
+ [NETCONFA_FORWARDING] = { .len = sizeof(int) },
+};
+
+static int inet6_netconf_get_devconf(struct sk_buff *in_skb,
+ struct nlmsghdr *nlh,
+ void *arg)
+{
+ struct net *net = sock_net(in_skb->sk);
+ struct nlattr *tb[NETCONFA_MAX+1];
+ struct netconfmsg *ncm;
+ struct sk_buff *skb;
+ struct ipv6_devconf *devconf;
+ struct inet6_dev *in6_dev;
+ struct net_device *dev;
+ int ifindex;
+ int err;
+
+ err = nlmsg_parse(nlh, sizeof(*ncm), tb, NETCONFA_MAX,
+ devconf_ipv6_policy);
+ if (err < 0)
+ goto errout;
+
+ err = EINVAL;
+ if (!tb[NETCONFA_IFINDEX])
+ goto errout;
+
+ ifindex = nla_get_s32(tb[NETCONFA_IFINDEX]);
+ switch (ifindex) {
+ case NETCONFA_IFINDEX_ALL:
+ devconf = net->ipv6.devconf_all;
+ break;
+ case NETCONFA_IFINDEX_DEFAULT:
+ devconf = net->ipv6.devconf_dflt;
+ break;
+ default:
+ dev = __dev_get_by_index(net, ifindex);
+ if (dev == NULL)
+ goto errout;
+ in6_dev = __in6_dev_get(dev);
+ if (in6_dev == NULL)
+ goto errout;
+ devconf = &in6_dev->cnf;
+ break;
+ }
+
+ err = -ENOBUFS;
+ skb = nlmsg_new(inet6_netconf_msgsize_devconf(-1), GFP_ATOMIC);
+ if (skb == NULL)
+ goto errout;
+
+ err = inet6_netconf_fill_devconf(skb, ifindex, devconf,
+ NETLINK_CB(in_skb).portid,
+ nlh->nlmsg_seq, RTM_NEWNETCONF, 0,
+ -1);
+ if (err < 0) {
+ /* -EMSGSIZE implies BUG in inet6_netconf_msgsize_devconf() */
+ WARN_ON(err == -EMSGSIZE);
+ kfree_skb(skb);
+ goto errout;
+ }
+ err = rtnl_unicast(skb, net, NETLINK_CB(in_skb).portid);
+errout:
+ return err;
+}
+
#ifdef CONFIG_SYSCTL
static void dev_forward_change(struct inet6_dev *idev)
{
else
addrconf_leave_anycast(ifa);
}
+ inet6_netconf_notify_devconf(dev_net(dev), NETCONFA_FORWARDING,
+ dev->ifindex, &idev->cnf);
}
*p = newf;
if (p == &net->ipv6.devconf_dflt->forwarding) {
+ if ((!newf) ^ (!old))
+ inet6_netconf_notify_devconf(net, NETCONFA_FORWARDING,
+ NETCONFA_IFINDEX_DEFAULT,
+ net->ipv6.devconf_dflt);
rtnl_unlock();
return 0;
}
if (p == &net->ipv6.devconf_all->forwarding) {
net->ipv6.devconf_dflt->forwarding = newf;
addrconf_forward_change(net, newf);
+ if ((!newf) ^ (!old))
+ inet6_netconf_notify_devconf(net, NETCONFA_FORWARDING,
+ NETCONFA_IFINDEX_ALL,
+ net->ipv6.devconf_all);
} else if ((!newf) ^ (!old))
dev_forward_change((struct inet6_dev *)table->extra1);
rtnl_unlock();
struct hlist_node *n;
hlist_for_each_entry_rcu_bh(ifa, n, &inet6_addr_lst[state->bucket],
addr_lst) {
+ if (!net_eq(dev_net(ifa->idev->dev), net))
+ continue;
/* sync with offset */
if (p < state->offset) {
p++;
continue;
}
state->offset++;
- if (net_eq(dev_net(ifa->idev->dev), net))
- return ifa;
+ return ifa;
}
/* prepare for next bucket */
struct hlist_node *n = &ifa->addr_lst;
hlist_for_each_entry_continue_rcu_bh(ifa, n, addr_lst) {
+ if (!net_eq(dev_net(ifa->idev->dev), net))
+ continue;
state->offset++;
- if (net_eq(dev_net(ifa->idev->dev), net))
- return ifa;
+ return ifa;
}
while (++state->bucket < IN6_ADDR_HSIZE) {
state->offset = 0;
hlist_for_each_entry_rcu_bh(ifa, n,
&inet6_addr_lst[state->bucket], addr_lst) {
+ if (!net_eq(dev_net(ifa->idev->dev), net))
+ continue;
state->offset++;
- if (net_eq(dev_net(ifa->idev->dev), net))
- return ifa;
+ return ifa;
}
}
inet6_dump_ifmcaddr, NULL);
__rtnl_register(PF_INET6, RTM_GETANYCAST, NULL,
inet6_dump_ifacaddr, NULL);
+ __rtnl_register(PF_INET6, RTM_GETNETCONF, inet6_netconf_get_devconf,
+ NULL, NULL);
ipv6_addr_label_rtnl_register();
projects / ~andy / linux / blobdiff