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net: sched: add flags to Qdisc class ops struct 

Extend Qdisc_class_ops with flags. Create enum to hold possible class ops
flag values. Add first class ops flags value QDISC_CLASS_OPS_DOIT_UNLOCKED
to indicate that class ops functions can be called without taking rtnl
lock.

Signed-off-by: Vlad Buslov <vladbu@mellanox.com>
Acked-by: Jiri Pirko <jiri@mellanox.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Vlad Buslov 2019-02-11 10:55:46 +02:00 committed by David S. Miller
parent 12db03b65c
commit dfcd2a2b22
1 changed files with 8 additions and 0 deletions
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8
include/net/sch_generic.h
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@ -179,6 +179,7 @@ static inline int qdisc_avail_bulklimit(const struct netdev_queue *txq)
}
struct Qdisc_class_ops {
unsigned int flags;
/* Child qdisc manipulation */
struct netdev_queue * (*select_queue)(struct Qdisc *, struct tcmsg *);
int (*graft)(struct Qdisc *, unsigned long cl,
@ -210,6 +211,13 @@ struct Qdisc_class_ops {
struct gnet_dump *);
};
/* Qdisc_class_ops flag values */
/* Implements API that doesn't require rtnl lock */
enum qdisc_class_ops_flags {
QDISC_CLASS_OPS_DOIT_UNLOCKED = 1,
};
struct Qdisc_ops {
struct Qdisc_ops *next;
const struct Qdisc_class_ops *cl_ops;