From: Stephen Hemminger <shemminger@vyatta.com>
Date: Sat, 20 Mar 2010 23:08:18 +0000 (-0700)
Subject: IPv6: addrconf cleanups
X-Git-Url: https://git.stricted.de/?a=commitdiff_plain;h=bcdd553fd3037d8700082ec4cbb6b25437ea06d6;p=GitHub%2FLineageOS%2Fandroid_kernel_samsung_universal7580.git
IPv6: addrconf cleanups
Some minor stuff, reformat comments and add whitespace for clarity
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
diff --git a/net/ipv6/addrconf.c b/net/ipv6/addrconf.c
index 6dbf0f79b76..bcb55b78746 100644
--- a/net/ipv6/addrconf.c
+++ b/net/ipv6/addrconf.c
@@ -2456,6 +2456,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
return notifier_from_errno(-ENOMEM);
}
break;
+
case NETDEV_UP:
case NETDEV_CHANGE:
if (dev->flags & IFF_SLAVE)
@@ -2485,10 +2486,9 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
}
if (idev) {
- if (idev->if_flags & IF_READY) {
+ if (idev->if_flags & IF_READY)
/* device is already configured. */
break;
- }
idev->if_flags |= IF_READY;
}
@@ -2517,25 +2517,30 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
addrconf_dev_config(dev);
break;
}
+
if (idev) {
if (run_pending)
addrconf_dad_run(idev);
- /* If the MTU changed during the interface down, when the
- interface up, the changed MTU must be reflected in the
- idev as well as routers.
+ /*
+ * If the MTU changed during the interface down,
+ * when the interface up, the changed MTU must be
+ * reflected in the idev as well as routers.
*/
- if (idev->cnf.mtu6 != dev->mtu && dev->mtu >= IPV6_MIN_MTU) {
+ if (idev->cnf.mtu6 != dev->mtu &&
+ dev->mtu >= IPV6_MIN_MTU) {
rt6_mtu_change(dev, dev->mtu);
idev->cnf.mtu6 = dev->mtu;
}
idev->tstamp = jiffies;
inet6_ifinfo_notify(RTM_NEWLINK, idev);
- /* If the changed mtu during down is lower than IPV6_MIN_MTU
- stop IPv6 on this interface.
+
+ /*
+ * If the changed mtu during down is lower than
+ * IPV6_MIN_MTU stop IPv6 on this interface.
*/
if (dev->mtu < IPV6_MIN_MTU)
- addrconf_ifdown(dev, event != NETDEV_DOWN);
+ addrconf_ifdown(dev, 1);
}
break;
@@ -2552,7 +2557,10 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
break;
}
- /* MTU falled under IPV6_MIN_MTU. Stop IPv6 on this interface. */
+ /*
+ * MTU falled under IPV6_MIN_MTU.
+ * Stop IPv6 on this interface.
+ */
case NETDEV_DOWN:
case NETDEV_UNREGISTER:
@@ -2572,6 +2580,7 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
return notifier_from_errno(err);
}
break;
+
case NETDEV_PRE_TYPE_CHANGE:
case NETDEV_POST_TYPE_CHANGE:
addrconf_type_change(dev, event);
@@ -2586,7 +2595,6 @@ static int addrconf_notify(struct notifier_block *this, unsigned long event,
*/
static struct notifier_block ipv6_dev_notf = {
.notifier_call = addrconf_notify,
- .priority = 0
};
static void addrconf_type_change(struct net_device *dev, unsigned long event)
@@ -2618,8 +2626,9 @@ static int addrconf_ifdown(struct net_device *dev, int how)
if (idev == NULL)
return -ENODEV;
- /* Step 1: remove reference to ipv6 device from parent device.
- Do not dev_put!
+ /*
+ * Step 1: remove reference to ipv6 device from parent device.
+ * Do not dev_put!
*/
if (how) {
idev->dead = 1;
@@ -2634,16 +2643,15 @@ static int addrconf_ifdown(struct net_device *dev, int how)
write_lock_bh(&idev->lock);
- /* Step 3: clear flags for stateless addrconf */
+ /* Step 2: clear flags for stateless addrconf */
if (!how)
idev->if_flags &= ~(IF_RS_SENT|IF_RA_RCVD|IF_READY);
- /* Step 4: clear address list */
#ifdef CONFIG_IPV6_PRIVACY
if (how && del_timer(&idev->regen_timer))
in6_dev_put(idev);
- /* clear tempaddr list */
+ /* Step 3: clear tempaddr list */
while (!list_empty(&idev->tempaddr_list)) {
ifa = list_first_entry(&idev->tempaddr_list,
struct inet6_ifaddr, tmp_list);
@@ -2669,7 +2677,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
/* If just doing link down, and address is permanent
and not link-local, then retain it. */
- if (how == 0 &&
+ if (!how &&
(ifa->flags&IFA_F_PERMANENT) &&
!(ipv6_addr_type(&ifa->addr) & IPV6_ADDR_LINKLOCAL)) {
list_move_tail(&ifa->if_list, &keep_list);
@@ -2711,7 +2719,6 @@ static int addrconf_ifdown(struct net_device *dev, int how)
write_unlock_bh(&idev->lock);
/* Step 5: Discard multicast list */
-
if (how)
ipv6_mc_destroy_dev(idev);
else
@@ -2719,8 +2726,7 @@ static int addrconf_ifdown(struct net_device *dev, int how)
idev->tstamp = jiffies;
- /* Shot the device (if unregistered) */
-
+ /* Last: Shot the device (if unregistered) */
if (how) {
addrconf_sysctl_unregister(idev);
neigh_parms_release(&nd_tbl, idev->nd_parms);
@@ -3108,8 +3114,7 @@ static void addrconf_verify(unsigned long foo)
del_timer(&addr_chk_timer);
- for (i=0; i < IN6_ADDR_HSIZE; i++) {
-
+ for (i = 0; i < IN6_ADDR_HSIZE; i++) {
restart:
hlist_for_each_entry_rcu(ifp, node,
&inet6_addr_lst[i], addr_lst) {
@@ -4376,7 +4381,7 @@ static int __addrconf_sysctl_register(struct net *net, char *dev_name,
if (t == NULL)
goto out;
- for (i=0; t->addrconf_vars[i].data; i++) {
+ for (i = 0; t->addrconf_vars[i].data; i++) {
t->addrconf_vars[i].data += (char*)p - (char*)&ipv6_devconf;
t->addrconf_vars[i].extra1 = idev; /* embedded; no ref */
t->addrconf_vars[i].extra2 = net;