diff options
| author | Vlad Buslov <vladbu@mellanox.com> | 2018-09-24 19:22:51 +0300 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2018-09-26 06:17:35 +0300 |
| commit | 3a7d0d07a386716b459b00783b11a8211cefcc0f (patch) | |
| tree | 4d1cf3e61e9262e1bb3436e6c24735753e19d00a /include/net/pkt_sched.h | |
| parent | 86bd446b5cebd783187ea3772ff258210de77d99 (diff) | |
| download | linux-3a7d0d07a386716b459b00783b11a8211cefcc0f.tar.xz | |
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/net/pkt_sched.h')
| -rw-r--r-- | include/net/pkt_sched.h | 1 |
1 files changed, 1 insertions, 0 deletions
diff --git a/include/net/pkt_sched.h b/include/net/pkt_sched.h index 7dc769e5452b..a16fbe9a2a67 100644 --- a/include/net/pkt_sched.h +++ b/include/net/pkt_sched.h @@ -102,6 +102,7 @@ int qdisc_set_default(const char *id); void qdisc_hash_add(struct Qdisc *q, bool invisible); void qdisc_hash_del(struct Qdisc *q); struct Qdisc *qdisc_lookup(struct net_device *dev, u32 handle); +struct Qdisc *qdisc_lookup_rcu(struct net_device *dev, u32 handle); struct qdisc_rate_table *qdisc_get_rtab(struct tc_ratespec *r, struct nlattr *tab, struct netlink_ext_ack *extack); |