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net: sched: Identify hardware traffic classes using classid

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This patch offloads the classid to hardware and uses the classid
reserved in the range :ffe0 - :ffef to identify hardware traffic
classes reported via dev->num_tc.

tcf_result structure contains the class ID of the class to which
the packet belongs and is offloaded to hardware via flower filter.
A new helper function is introduced to represent HW traffic
classes 0 through 15 using the reserved classid values :ffe0 - :ffef.

Signed-off-by: Amritha Nambiar <amritha.nambiar@intel.com>
Acked-by: Shannon Nelson <shannon.nelson@oracle.com>
Tested-by: Andrew Bowers <andrewx.bowers@intel.com>
Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
This commit is contained in:
Amritha Nambiar
2017-10-27 02:35:34 -07:00
committed by Jeff Kirsher
parent aa250f1186
commit 384c181e37
3 changed files with 10 additions and 0 deletions
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7
include/net/sch_generic.h
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@@ -411,6 +411,13 @@ qdisc_class_find(const struct Qdisc_class_hash *hash, u32 id)
return NULL;
}
static inline int tc_classid_to_hwtc(struct net_device *dev, u32 classid)
{
u32 hwtc = TC_H_MIN(classid) - TC_H_MIN_PRIORITY;
return (hwtc < netdev_get_num_tc(dev)) ? hwtc : -EINVAL;
}
int qdisc_class_hash_init(struct Qdisc_class_hash *);
void qdisc_class_hash_insert(struct Qdisc_class_hash *,
struct Qdisc_class_common *);