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| author | Eric Dumazet <eric.dumazet@gmail.com> | 2010-09-15 04:04:31 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2010-09-15 22:06:05 -0700 |
| commit | 95ae6b228f814fc0528d0506ee9f18ac333d6851 (patch) | |
| tree | d5287f3dee478e1bd5fa79e63192447c5bc91e92 /include/linux/inetdevice.h | |
| parent | 9e0064a5456fd75fd7c70f6f3692c7f732f91a65 (diff) | |
| download | lwn-95ae6b228f814fc0528d0506ee9f18ac333d6851.tar.gz lwn-95ae6b228f814fc0528d0506ee9f18ac333d6851.zip | |
ipv4: ip_ptr cleanups
dev->ip_ptr is protected by rtnl and rcu.
Yet some places dont use appropriate primitives and/or locking rules.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/inetdevice.h')
| -rw-r--r-- | include/linux/inetdevice.h | 14 |
1 files changed, 5 insertions, 9 deletions
diff --git a/include/linux/inetdevice.h b/include/linux/inetdevice.h index 2be1a1a2beb9..1ec09bb4a3ab 100644 --- a/include/linux/inetdevice.h +++ b/include/linux/inetdevice.h @@ -9,6 +9,7 @@ #include <linux/rcupdate.h> #include <linux/timer.h> #include <linux/sysctl.h> +#include <linux/rtnetlink.h> enum { @@ -198,14 +199,10 @@ static __inline__ int bad_mask(__be32 mask, __be32 addr) static inline struct in_device *__in_dev_get_rcu(const struct net_device *dev) { - struct in_device *in_dev = dev->ip_ptr; - if (in_dev) - in_dev = rcu_dereference(in_dev); - return in_dev; + return rcu_dereference(dev->ip_ptr); } -static __inline__ struct in_device * -in_dev_get(const struct net_device *dev) +static inline struct in_device *in_dev_get(const struct net_device *dev) { struct in_device *in_dev; @@ -217,10 +214,9 @@ in_dev_get(const struct net_device *dev) return in_dev; } -static __inline__ struct in_device * -__in_dev_get_rtnl(const struct net_device *dev) +static inline struct in_device *__in_dev_get_rtnl(const struct net_device *dev) { - return (struct in_device*)dev->ip_ptr; + return rcu_dereference_check(dev->ip_ptr, lockdep_rtnl_is_held()); } extern void in_dev_finish_destroy(struct in_device *idev); |