Merge git://git.kernel.org/pub/scm/linux/kernel/git/davem/net

[karo-tx-linux.git] / net / ipv6 / addrconf.c

diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index ad12f7c43f25337ff634b5db328ff591c214e68e..2d6d1793bbfed73fc001ccfbff9485601ea527d7 100644 (file)
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -99,9 +99,9 @@
 #define ACONF_DEBUG 2
 
 #if ACONF_DEBUG >= 3
-#define ADBG(x) printk x
+#define ADBG(fmt, ...) printk(fmt, ##__VA_ARGS__)
 #else
-#define ADBG(x)
+#define ADBG(fmt, ...) do { if (0) printk(fmt, ##__VA_ARGS__); } while (0)
 #endif
 
 #define        INFINITY_LIFE_TIME      0xFFFFFFFF
@@ -374,9 +374,9 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev)
        dev_hold(dev);
 
        if (snmp6_alloc_dev(ndev) < 0) {
-               ADBG((KERN_WARNING
+               ADBG(KERN_WARNING
                        "%s: cannot allocate memory for statistics; dev=%s.\n",
-                       __func__, dev->name));
+                       __func__, dev->name);
                neigh_parms_release(&nd_tbl, ndev->nd_parms);
                dev_put(dev);
                kfree(ndev);
@@ -384,9 +384,9 @@ static struct inet6_dev *ipv6_add_dev(struct net_device *dev)
        }
 
        if (snmp6_register_dev(ndev) < 0) {
-               ADBG((KERN_WARNING
+               ADBG(KERN_WARNING
                        "%s: cannot create /proc/net/dev_snmp6/%s\n",
-                       __func__, dev->name));
+                       __func__, dev->name);
                neigh_parms_release(&nd_tbl, ndev->nd_parms);
                ndev->dead = 1;
                in6_dev_finish_destroy(ndev);
@@ -849,7 +849,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
 
        /* Ignore adding duplicate addresses on an interface */
        if (ipv6_chk_same_addr(dev_net(idev->dev), addr, idev->dev)) {
-               ADBG(("ipv6_add_addr: already assigned\n"));
+               ADBG("ipv6_add_addr: already assigned\n");
                err = -EEXIST;
                goto out;
        }
@@ -857,7 +857,7 @@ ipv6_add_addr(struct inet6_dev *idev, const struct in6_addr *addr,
        ifa = kzalloc(sizeof(struct inet6_ifaddr), GFP_ATOMIC);
 
        if (ifa == NULL) {
-               ADBG(("ipv6_add_addr: malloc failed\n"));
+               ADBG("ipv6_add_addr: malloc failed\n");
                err = -ENOBUFS;
                goto out;
        }
@@ -1131,12 +1131,10 @@ retry:
        if (ifp->flags & IFA_F_OPTIMISTIC)
                addr_flags |= IFA_F_OPTIMISTIC;
 
-       ift = !max_addresses ||
-             ipv6_count_addresses(idev) < max_addresses ?
-               ipv6_add_addr(idev, &addr, NULL, tmp_plen,
-                             ipv6_addr_scope(&addr), addr_flags,
-                             tmp_valid_lft, tmp_prefered_lft) : NULL;
-       if (IS_ERR_OR_NULL(ift)) {
+       ift = ipv6_add_addr(idev, &addr, NULL, tmp_plen,
+                           ipv6_addr_scope(&addr), addr_flags,
+                           tmp_valid_lft, tmp_prefered_lft);
+       if (IS_ERR(ift)) {
                in6_ifa_put(ifp);
                in6_dev_put(idev);
                pr_info("%s: retry temporary address regeneration\n", __func__);
@@ -1814,6 +1812,16 @@ static int addrconf_ifid_gre(u8 *eui, struct net_device *dev)
        return __ipv6_isatap_ifid(eui, *(__be32 *)dev->dev_addr);
 }
 
+static int addrconf_ifid_ip6tnl(u8 *eui, struct net_device *dev)
+{
+       memcpy(eui, dev->perm_addr, 3);
+       memcpy(eui + 5, dev->perm_addr + 3, 3);
+       eui[3] = 0xFF;
+       eui[4] = 0xFE;
+       eui[0] ^= 2;
+       return 0;
+}
+
 static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
 {
        switch (dev->type) {
@@ -1832,6 +1840,8 @@ static int ipv6_generate_eui64(u8 *eui, struct net_device *dev)
                return addrconf_ifid_eui64(eui, dev);
        case ARPHRD_IEEE1394:
                return addrconf_ifid_ieee1394(eui, dev);
+       case ARPHRD_TUNNEL6:
+               return addrconf_ifid_ip6tnl(eui, dev);
        }
        return -1;
 }
@@ -2057,7 +2067,7 @@ void addrconf_prefix_rcv(struct net_device *dev, u8 *opt, int len, bool sllao)
        pinfo = (struct prefix_info *) opt;
 
        if (len < sizeof(struct prefix_info)) {
-               ADBG(("addrconf: prefix option too short\n"));
+               ADBG("addrconf: prefix option too short\n");
                return;
        }
 
@@ -2709,7 +2719,8 @@ static void addrconf_dev_config(struct net_device *dev)
            (dev->type != ARPHRD_ARCNET) &&
            (dev->type != ARPHRD_INFINIBAND) &&
            (dev->type != ARPHRD_IEEE802154) &&
-           (dev->type != ARPHRD_IEEE1394)) {
+           (dev->type != ARPHRD_IEEE1394) &&
+           (dev->type != ARPHRD_TUNNEL6)) {
                /* Alas, we support only Ethernet autoconfiguration. */
                return;
        }
@@ -2795,44 +2806,6 @@ ipv6_inherit_linklocal(struct inet6_dev *idev, struct net_device *link_dev)
        return -1;
 }
 
-static void ip6_tnl_add_linklocal(struct inet6_dev *idev)
-{
-       struct net_device *link_dev;
-       struct net *net = dev_net(idev->dev);
-
-       /* first try to inherit the link-local address from the link device */
-       if (idev->dev->iflink &&
-           (link_dev = __dev_get_by_index(net, idev->dev->iflink))) {
-               if (!ipv6_inherit_linklocal(idev, link_dev))
-                       return;
-       }
-       /* then try to inherit it from any device */
-       for_each_netdev(net, link_dev) {
-               if (!ipv6_inherit_linklocal(idev, link_dev))
-                       return;
-       }
-       pr_debug("init ip6-ip6: add_linklocal failed\n");
-}
-
-/*
- * Autoconfigure tunnel with a link-local address so routing protocols,
- * DHCPv6, MLD etc. can be run over the virtual link
- */
-
-static void addrconf_ip6_tnl_config(struct net_device *dev)
-{
-       struct inet6_dev *idev;
-
-       ASSERT_RTNL();
-
-       idev = addrconf_add_dev(dev);
-       if (IS_ERR(idev)) {
-               pr_debug("init ip6-ip6: add_dev failed\n");
-               return;
-       }
-       ip6_tnl_add_linklocal(idev);
-}
-
 static int addrconf_notify(struct notifier_block *this, unsigned long event,
                           void *ptr)
 {
@@ -2900,9 +2873,6 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
                        addrconf_gre_config(dev);
                        break;
 #endif
-               case ARPHRD_TUNNEL6:
-                       addrconf_ip6_tnl_config(dev);
-                       break;
                case ARPHRD_LOOPBACK:
                        init_loopback(dev);
                        break;
@@ -3637,8 +3607,8 @@ restart:
        if (time_before(next_sched, jiffies + ADDRCONF_TIMER_FUZZ_MAX))
                next_sched = jiffies + ADDRCONF_TIMER_FUZZ_MAX;
 
-       ADBG((KERN_DEBUG "now = %lu, schedule = %lu, rounded schedule = %lu => %lu\n",
-             now, next, next_sec, next_sched));
+       ADBG(KERN_DEBUG "now = %lu, schedule = %lu, rounded schedule = %lu => %lu\n",
+             now, next, next_sec, next_sched);
 
        addr_chk_timer.expires = next_sched;
        add_timer(&addr_chk_timer);