diff options
| author | Ingo Molnar <mingo@elte.hu> | 2008-09-04 13:02:35 +0200 |
|---|---|---|
| committer | Ingo Molnar <mingo@elte.hu> | 2008-09-04 13:02:35 +0200 |
| commit | 42390cdec5f6e6e2ee54f308474a6ef7dd16aa5c (patch) | |
| tree | e9684c84f53272319a5acd4b9c86503f30274a51 /net/ipv4/devinet.c | |
| parent | 11c231a962c740b3216eb6565149ae5a7944cba7 (diff) | |
| parent | d210baf53b699fc61aa891c177b71d7082d3b957 (diff) | |
Merge branch 'linus' into x86/x2apic
Conflicts:
arch/x86/kernel/cpu/cyrix.c
include/asm-x86/cpufeature.h
Signed-off-by: Ingo Molnar <mingo@elte.hu>
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; |