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| author | Vlad Buslov <vladbu@mellanox.com> | 2018-09-24 19:22:51 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-09-25 20:17:35 -0700 |
| commit | 3a7d0d07a386716b459b00783b11a8211cefcc0f (patch) | |
| tree | 4d1cf3e61e9262e1bb3436e6c24735753e19d00a /include/linux/rtnetlink.h | |
| parent | 86bd446b5cebd783187ea3772ff258210de77d99 (diff) | |
| download | linux-stable-3a7d0d07a386716b459b00783b11a8211cefcc0f.tar.gz linux-stable-3a7d0d07a386716b459b00783b11a8211cefcc0f.tar.bz2 linux-stable-3a7d0d07a386716b459b00783b11a8211cefcc0f.zip | |
net: sched: extend Qdisc with rcu
Currently, Qdisc API functions assume that users have rtnl lock taken. To
implement rtnl unlocked classifiers update interface, Qdisc API must be
extended with functions that do not require rtnl lock.
Extend Qdisc structure with rcu. Implement special version of put function
qdisc_put_unlocked() that is called without rtnl lock taken. This function
only takes rtnl lock if Qdisc reference counter reached zero and is
intended to be used as optimization.
Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/rtnetlink.h')
| -rw-r--r-- | include/linux/rtnetlink.h | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/include/linux/rtnetlink.h b/include/linux/rtnetlink.h index 9cdd76348d9a..bb9cb84114c1 100644 --- a/include/linux/rtnetlink.h +++ b/include/linux/rtnetlink.h @@ -85,6 +85,11 @@ static inline struct netdev_queue *dev_ingress_queue(struct net_device *dev) return rtnl_dereference(dev->ingress_queue); } +static inline struct netdev_queue *dev_ingress_queue_rcu(struct net_device *dev) +{ + return rcu_dereference(dev->ingress_queue); +} + struct netdev_queue *dev_ingress_queue_create(struct net_device *dev); #ifdef CONFIG_NET_INGRESS |