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net: sched: gred: provide a better structured dump and expose stats

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Currently all GRED's virtual queue data is dumped in a single
array in a single attribute.  This makes it pretty much impossible
to add new fields.  In order to expose more detailed stats add a
new set of attributes.  We can now expose the 64 bit value of bytesin
and all the mark stats which were not part of the original design.

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 2018-11-14 22:23:49 -08:00 • committed by David S. Miller
parent 9f5cd0c806
commit 80e22e961d
2 changed files with 78 additions and 1 deletions
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26
include/uapi/linux/pkt_sched.h
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@ -291,11 +291,37 @@ enum {
TCA_GRED_DPS,
TCA_GRED_MAX_P,
TCA_GRED_LIMIT,
TCA_GRED_VQ_LIST, /* nested TCA_GRED_VQ_ENTRY */
__TCA_GRED_MAX,
};
#define TCA_GRED_MAX (__TCA_GRED_MAX - 1)
enum {
TCA_GRED_VQ_ENTRY_UNSPEC,
TCA_GRED_VQ_ENTRY, /* nested TCA_GRED_VQ_* */
__TCA_GRED_VQ_ENTRY_MAX,
};
#define TCA_GRED_VQ_ENTRY_MAX (__TCA_GRED_VQ_ENTRY_MAX - 1)
enum {
TCA_GRED_VQ_UNSPEC,
TCA_GRED_VQ_PAD,
TCA_GRED_VQ_DP, /* u32 */
TCA_GRED_VQ_STAT_BYTES, /* u64 */
TCA_GRED_VQ_STAT_PACKETS, /* u32 */
TCA_GRED_VQ_STAT_BACKLOG, /* u32 */
TCA_GRED_VQ_STAT_PROB_DROP, /* u32 */
TCA_GRED_VQ_STAT_PROB_MARK, /* u32 */
TCA_GRED_VQ_STAT_FORCED_DROP, /* u32 */
TCA_GRED_VQ_STAT_FORCED_MARK, /* u32 */
TCA_GRED_VQ_STAT_PDROP, /* u32 */
TCA_GRED_VQ_STAT_OTHER, /* u32 */
__TCA_GRED_VQ_MAX
};
#define TCA_GRED_VQ_MAX (__TCA_GRED_VQ_MAX - 1)
struct tc_gred_qopt {
__u32 limit; /* HARD maximal queue length (bytes) */
__u32 qth_min; /* Min average length threshold (bytes) */