diff options
| author | James Morris <jmorris@namei.org> | 2008-09-21 17:41:56 -0700 |
|---|---|---|
| committer | James Morris <jmorris@namei.org> | 2008-09-21 17:41:56 -0700 |
| commit | ab2b49518e743962f71b94246855c44ee9cf52cc (patch) | |
| tree | 26b260a350f0a0a0d19b558bf147b812e3a1564c /net/ipv4/devinet.c | |
| parent | f058925b201357fba48d56cc9c1719ae274b2022 (diff) | |
| parent | 72d31053f62c4bc464c2783974926969614a8649 (diff) | |
Merge branch 'master' into next
Conflicts:
MAINTAINERS
Thanks for breaking my tree :-)
Signed-off-by: James Morris <jmorris@namei.org>
Diffstat (limited to 'net/ipv4/devinet.c')
| -rw-r--r-- | net/ipv4/devinet.c | 15 |
1 files changed, 12 insertions, 3 deletions
diff --git a/net/ipv4/devinet.c b/net/ipv4/devinet.c index 91d3d96805d..b12dae2b0b2 100644 --- a/net/ipv4/devinet.c +++ b/net/ipv4/devinet.c @@ -1029,6 +1029,11 @@ skip: } } +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, @@ -1048,6 +1053,10 @@ 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; } @@ -1058,7 +1067,7 @@ static int inetdev_event(struct notifier_block *this, unsigned long event, 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; @@ -1080,9 +1089,9 @@ static int inetdev_event(struct notifier_block *this, unsigned long event, 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; |