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net: sched: add an offload dump helper

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Qdisc dump 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 <[email protected]>
Reviewed-by: John Hurley <[email protected]>
Signed-off-by: David S. Miller <[email protected]>
This commit is contained in:
Jakub Kicinski 2018-11-07 17:33:34 -08:00 • committed by David S. Miller
commit b592843c67
4 changed files with 35 additions and 31 deletions
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12
include/net/sch_generic.h
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@ -579,6 +579,18 @@ void qdisc_put(struct Qdisc *qdisc);
void qdisc_put_unlocked(struct Qdisc *qdisc);
void qdisc_tree_reduce_backlog(struct Qdisc *qdisc, unsigned int n,
unsigned int len);
#ifdef CONFIG_NET_SCHED
int qdisc_offload_dump_helper(struct Qdisc *q, enum tc_setup_type type,
void *type_data);
#else
static inline int
qdisc_offload_dump_helper(struct Qdisc *q, enum tc_setup_type type,
void *type_data)
{
q->flags &= ~TCQ_F_OFFLOADED;
return 0;
}
#endif
struct Qdisc *qdisc_alloc(struct netdev_queue *dev_queue,
const struct Qdisc_ops *ops,
struct netlink_ext_ack *extack);