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Diffstat (limited to 'net/ipv6/addrconf.c')
-rw-r--r--net/ipv6/addrconf.c208
1 files changed, 197 insertions, 11 deletions
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index dae802c0af7..d1ab6ab29a5 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -70,6 +70,7 @@
#include <net/snmp.h>
#include <net/af_ieee802154.h>
+#include <net/firewire.h>
#include <net/ipv6.h>
#include <net/protocol.h>
#include <net/ndisc.h>
@@ -419,6 +420,7 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev)
ipv6_regen_rndid((unsigned long) ndev);
}
#endif
+ ndev->token = in6addr_any;
if (netif_running(dev) && addrconf_qdisc_ok(dev))
ndev->if_flags |= IF_READY;
@@ -542,8 +544,7 @@ static const struct nla_policy devconf_ipv6_policy[NETCONFA_MAX+1] = {
};
static int inet6_netconf_get_devconf(struct sk_buff *in_skb,
- struct nlmsghdr *nlh,
- void *arg)
+ struct nlmsghdr *nlh)
{
struct net *net = sock_net(in_skb->sk);
struct nlattr *tb[NETCONFA_MAX+1];
@@ -603,6 +604,77 @@ errout:
return err;
}
+static int inet6_netconf_dump_devconf(struct sk_buff *skb,
+ struct netlink_callback *cb)
+{
+ struct net *net = sock_net(skb->sk);
+ int h, s_h;
+ int idx, s_idx;
+ struct net_device *dev;
+ struct inet6_dev *idev;
+ struct hlist_head *head;
+
+ s_h = cb->args[0];
+ s_idx = idx = cb->args[1];
+
+ for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
+ idx = 0;
+ head = &net->dev_index_head[h];
+ rcu_read_lock();
+ cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^
+ net->dev_base_seq;
+ hlist_for_each_entry_rcu(dev, head, index_hlist) {
+ if (idx < s_idx)
+ goto cont;
+ idev = __in6_dev_get(dev);
+ if (!idev)
+ goto cont;
+
+ if (inet6_netconf_fill_devconf(skb, dev->ifindex,
+ &idev->cnf,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ RTM_NEWNETCONF,
+ NLM_F_MULTI,
+ -1) <= 0) {
+ rcu_read_unlock();
+ goto done;
+ }
+ nl_dump_check_consistent(cb, nlmsg_hdr(skb));
+cont:
+ idx++;
+ }
+ rcu_read_unlock();
+ }
+ if (h == NETDEV_HASHENTRIES) {
+ if (inet6_netconf_fill_devconf(skb, NETCONFA_IFINDEX_ALL,
+ net->ipv6.devconf_all,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ RTM_NEWNETCONF, NLM_F_MULTI,
+ -1) <= 0)
+ goto done;
+ else
+ h++;
+ }
+ if (h == NETDEV_HASHENTRIES + 1) {
+ if (inet6_netconf_fill_devconf(skb, NETCONFA_IFINDEX_DEFAULT,
+ net->ipv6.devconf_dflt,
+ NETLINK_CB(cb->skb).portid,
+ cb->nlh->nlmsg_seq,
+ RTM_NEWNETCONF, NLM_F_MULTI,
+ -1) <= 0)
+ goto done;
+ else
+ h++;
+ }
+done:
+ cb->args[0] = h;
+ cb->args[1] = idx;
+
+ return skb->len;
+}
+
#ifdef CONFIG_SYSCTL
static void dev_forward_change(struct inet6_dev *idev)
{
@@ -804,6 +876,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr, int pfxlen,
ifa->prefix_len = pfxlen;
ifa->flags = flags | IFA_F_TENTATIVE;
ifa->cstamp = ifa->tstamp = jiffies;
+ ifa->tokenized = false;
ifa->rt = rt;
@@ -1666,6 +1739,20 @@ static int addrconf_ifid_eui64(u8 *eui, struct net_device *dev)
return 0;
}
+static int addrconf_ifid_ieee1394(u8 *eui, struct net_device *dev)
+{
+ union fwnet_hwaddr *ha;
+
+ if (dev->addr_len != FWNET_ALEN)
+ return -1;
+
+ ha = (union fwnet_hwaddr *)dev->dev_addr;
+
+ memcpy(eui, &ha->uc.uniq_id, sizeof(ha->uc.uniq_id));
+ eui[0] ^= 2;
+ return 0;
+}
+
static int addrconf_ifid_arcnet(u8 *eui, struct net_device *dev)
{
/* XXX: inherit EUI-64 from other interface -- yoshfuji */
@@ -1730,6 +1817,8 @@ static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
return addrconf_ifid_gre(eui, dev);
case ARPHRD_IEEE802154:
return addrconf_ifid_eui64(eui, dev);
+ case ARPHRD_IEEE1394:
+ return addrconf_ifid_ieee1394(eui, dev);
}
return -1;
}
@@ -2044,11 +2133,19 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len, bool sllao)
struct inet6_ifaddr *ifp;
struct in6_addr addr;
int create = 0, update_lft = 0;
+ bool tokenized = false;
if (pinfo->prefix_len == 64) {
memcpy(&addr, &pinfo->prefix, 8);
- if (ipv6_generate_eui64(addr.s6_addr + 8, dev) &&
- ipv6_inherit_eui64(addr.s6_addr + 8, in6_dev)) {
+
+ if (!ipv6_addr_any(&in6_dev->token)) {
+ read_lock_bh(&in6_dev->lock);
+ memcpy(addr.s6_addr + 8,
+ in6_dev->token.s6_addr + 8, 8);
+ read_unlock_bh(&in6_dev->lock);
+ tokenized = true;
+ } else if (ipv6_generate_eui64(addr.s6_addr + 8, dev) &&
+ ipv6_inherit_eui64(addr.s6_addr + 8, in6_dev)) {
in6_dev_put(in6_dev);
return;
}
@@ -2089,6 +2186,7 @@ ok:
update_lft = create = 1;
ifp->cstamp = jiffies;
+ ifp->tokenized = tokenized;
addrconf_dad_start(ifp);
}
@@ -2598,7 +2696,8 @@ static void addrconf_dev_config(struct net_device *dev)
(dev->type != ARPHRD_FDDI) &&
(dev->type != ARPHRD_ARCNET) &&
(dev->type != ARPHRD_INFINIBAND) &&
- (dev->type != ARPHRD_IEEE802154)) {
+ (dev->type != ARPHRD_IEEE802154) &&
+ (dev->type != ARPHRD_IEEE1394)) {
/* Alas, we support only Ethernet autoconfiguration. */
return;
}
@@ -3535,7 +3634,7 @@ static const struct nla_policy ifa_ipv6_policy[IFA_MAX+1] = {
};
static int
-inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+inet6_rtm_deladdr(struct sk_buff *skb, struct nlmsghdr *nlh)
{
struct net *net = sock_net(skb->sk);
struct ifaddrmsg *ifm;
@@ -3601,7 +3700,7 @@ static int inet6_addr_modify(struct inet6_ifaddr *ifp, u8 ifa_flags,
}
static int
-inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+inet6_rtm_newaddr(struct sk_buff *skb, struct nlmsghdr *nlh)
{
struct net *net = sock_net(skb->sk);
struct ifaddrmsg *ifm;
@@ -3832,6 +3931,7 @@ static int in6_dump_addrs(struct inet6_dev *idev, struct sk_buff *skb,
NLM_F_MULTI);
if (err <= 0)
break;
+ nl_dump_check_consistent(cb, nlmsg_hdr(skb));
}
break;
}
@@ -3889,6 +3989,7 @@ static int inet6_dump_addr(struct sk_buff *skb, struct netlink_callback *cb,
s_ip_idx = ip_idx = cb->args[2];
rcu_read_lock();
+ cb->seq = atomic_read(&net->ipv6.dev_addr_genid) ^ net->dev_base_seq;
for (h = s_h; h < NETDEV_HASHENTRIES; h++, s_idx = 0) {
idx = 0;
head = &net->dev_index_head[h];
@@ -3940,8 +4041,7 @@ static int inet6_dump_ifacaddr(struct sk_buff *skb, struct netlink_callback *cb)
return inet6_dump_addr(skb, cb, type);
}
-static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh,
- void *arg)
+static int inet6_rtm_getaddr(struct sk_buff *in_skb, struct nlmsghdr *nlh)
{
struct net *net = sock_net(in_skb->sk);
struct ifaddrmsg *ifm;
@@ -4074,7 +4174,8 @@ static inline size_t inet6_ifla6_size(void)
+ nla_total_size(sizeof(struct ifla_cacheinfo))
+ nla_total_size(DEVCONF_MAX * 4) /* IFLA_INET6_CONF */
+ nla_total_size(IPSTATS_MIB_MAX * 8) /* IFLA_INET6_STATS */
- + nla_total_size(ICMP6_MIB_MAX * 8); /* IFLA_INET6_ICMP6STATS */
+ + nla_total_size(ICMP6_MIB_MAX * 8) /* IFLA_INET6_ICMP6STATS */
+ + nla_total_size(sizeof(struct in6_addr)); /* IFLA_INET6_TOKEN */
}
static inline size_t inet6_if_nlmsg_size(void)
@@ -4161,6 +4262,13 @@ static int inet6_fill_ifla6_attrs(struct sk_buff *skb, struct inet6_dev *idev)
goto nla_put_failure;
snmp6_fill_stats(nla_data(nla), idev, IFLA_INET6_ICMP6STATS, nla_len(nla));
+ nla = nla_reserve(skb, IFLA_INET6_TOKEN, sizeof(struct in6_addr));
+ if (nla == NULL)
+ goto nla_put_failure;
+ read_lock_bh(&idev->lock);
+ memcpy(nla_data(nla), idev->token.s6_addr, nla_len(nla));
+ read_unlock_bh(&idev->lock);
+
return 0;
nla_put_failure:
@@ -4188,6 +4296,80 @@ static int inet6_fill_link_af(struct sk_buff *skb, const struct net_device *dev)
return 0;
}
+static int inet6_set_iftoken(struct inet6_dev *idev, struct in6_addr *token)
+{
+ struct inet6_ifaddr *ifp;
+ struct net_device *dev = idev->dev;
+ bool update_rs = false;
+
+ if (token == NULL)
+ return -EINVAL;
+ if (ipv6_addr_any(token))
+ return -EINVAL;
+ if (dev->flags & (IFF_LOOPBACK | IFF_NOARP))
+ return -EINVAL;
+ if (!ipv6_accept_ra(idev))
+ return -EINVAL;
+ if (idev->cnf.rtr_solicits <= 0)
+ return -EINVAL;
+
+ write_lock_bh(&idev->lock);
+
+ BUILD_BUG_ON(sizeof(token->s6_addr) != 16);
+ memcpy(idev->token.s6_addr + 8, token->s6_addr + 8, 8);
+
+ write_unlock_bh(&idev->lock);
+
+ if (!idev->dead && (idev->if_flags & IF_READY)) {
+ struct in6_addr ll_addr;
+
+ ipv6_get_lladdr(dev, &ll_addr, IFA_F_TENTATIVE |
+ IFA_F_OPTIMISTIC);
+
+ /* If we're not ready, then normal ifup will take care
+ * of this. Otherwise, we need to request our rs here.
+ */
+ ndisc_send_rs(dev, &ll_addr, &in6addr_linklocal_allrouters);
+ update_rs = true;
+ }
+
+ write_lock_bh(&idev->lock);
+
+ if (update_rs)
+ idev->if_flags |= IF_RS_SENT;
+
+ /* Well, that's kinda nasty ... */
+ list_for_each_entry(ifp, &idev->addr_list, if_list) {
+ spin_lock(&ifp->lock);
+ if (ifp->tokenized) {
+ ifp->valid_lft = 0;
+ ifp->prefered_lft = 0;
+ }
+ spin_unlock(&ifp->lock);
+ }
+
+ write_unlock_bh(&idev->lock);
+ return 0;
+}
+
+static int inet6_set_link_af(struct net_device *dev, const struct nlattr *nla)
+{
+ int err = -EINVAL;
+ struct inet6_dev *idev = __in6_dev_get(dev);
+ struct nlattr *tb[IFLA_INET6_MAX + 1];
+
+ if (!idev)
+ return -EAFNOSUPPORT;
+
+ if (nla_parse_nested(tb, IFLA_INET6_MAX, nla, NULL) < 0)
+ BUG();
+
+ if (tb[IFLA_INET6_TOKEN])
+ err = inet6_set_iftoken(idev, nla_data(tb[IFLA_INET6_TOKEN]));
+
+ return err;
+}
+
static int inet6_fill_ifinfo(struct sk_buff *skb, struct inet6_dev *idev,
u32 portid, u32 seq, int event, unsigned int flags)
{
@@ -4366,6 +4548,8 @@ errout:
static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
{
+ struct net *net = dev_net(ifp->idev->dev);
+
inet6_ifa_notify(event ? : RTM_NEWADDR, ifp);
switch (event) {
@@ -4391,6 +4575,7 @@ static void __ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
dst_free(&ifp->rt->dst);
break;
}
+ atomic_inc(&net->ipv6.dev_addr_genid);
}
static void ipv6_ifa_notify(int event, struct inet6_ifaddr *ifp)
@@ -4871,6 +5056,7 @@ static struct rtnl_af_ops inet6_ops = {
.family = AF_INET6,
.fill_link_af = inet6_fill_link_af,
.get_link_af_size = inet6_get_link_af_size,
+ .set_link_af = inet6_set_link_af,
};
/*
@@ -4943,7 +5129,7 @@ int __init addrconf_init(void)
__rtnl_register(PF_INET6, RTM_GETANYCAST, NULL,
inet6_dump_ifacaddr, NULL);
__rtnl_register(PF_INET6, RTM_GETNETCONF, inet6_netconf_get_devconf,
- NULL, NULL);
+ inet6_netconf_dump_devconf, NULL);
ipv6_addr_label_rtnl_register();
generated by cgit v1.2.3 (git 2.25.1) at 2024-06-20 14:22:46 +0000