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net: sched: add an offload graft helper

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Qdisc graft operation of offload-capable qdiscs performs a few
extra steps which are identical among all the qdiscs.  Add
a helper to share this code.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: John Hurley <john.hurley@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
This commit is contained in:
Jakub Kicinski
2018-11-07 17:33:37 -08:00
committed by David S. Miller
parent 58f8927399
commit bfaee9113f
3 changed files with 44 additions and 24 deletions
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12
include/net/sch_generic.h
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@@ -582,6 +582,10 @@ void qdisc_tree_reduce_backlog(struct Qdisc *qdisc, unsigned int n,
#ifdef CONFIG_NET_SCHED
int qdisc_offload_dump_helper(struct Qdisc *q, enum tc_setup_type type,
void *type_data);
void qdisc_offload_graft_helper(struct net_device *dev, struct Qdisc *sch,
struct Qdisc *new, struct Qdisc *old,
enum tc_setup_type type, void *type_data,
struct netlink_ext_ack *extack);
#else
static inline int
qdisc_offload_dump_helper(struct Qdisc *q, enum tc_setup_type type,
@@ -590,6 +594,14 @@ qdisc_offload_dump_helper(struct Qdisc *q, enum tc_setup_type type,
q->flags &= ~TCQ_F_OFFLOADED;
return 0;
}
static inline void
qdisc_offload_graft_helper(struct net_device *dev, struct Qdisc *sch,
struct Qdisc *new, struct Qdisc *old,
enum tc_setup_type type, void *type_data,
struct netlink_ext_ack *extack)
{
}
#endif
struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
const struct Qdisc_ops *ops,