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| author |   Eric Dumazet <edumazet@google.com> | 2013-06-06 08:43:22 -0700 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2013-06-11 02:51:03 -0700 |
| commit | 45203a3b380cee28f570475c0d28c169f908c209 (patch) | |
| tree | 9d9b00da9accbc0ea01c91c206cb86a2f9dd7609 /include/uapi/linux/gen_stats.h | |
| parent | net: pass correct parameter to skb_headers_offset_update() (diff) | |
| download | linux-dev-45203a3b380cee28f570475c0d28c169f908c209.tar.xz linux-dev-45203a3b380cee28f570475c0d28c169f908c209.zip | |
net_sched: add 64bit rate estimators
struct gnet_stats_rate_est contains u32 fields, so the bytes per second
field can wrap at 34360Mbit.
Add a new gnet_stats_rate_est64 structure to get 64bit bps/pps fields,
and switch the kernel to use this structure natively.
This structure is dumped to user space as a new attribute :
TCA_STATS_RATE_EST64
Old tc command will now display the capped bps (to 34360Mbit), instead
of wrapped values, and updated tc command will display correct
information.
Old tc command output, after patch :
eric:~# tc -s -d qd sh dev lo
qdisc pfifo 8001: root refcnt 2 limit 1000p
Sent 80868245400 bytes 1978837 pkt (dropped 0, overlimits 0 requeues 0)
rate 34360Mbit 189696pps backlog 0b 0p requeues 0
This patch carefully reorganizes "struct Qdisc" layout to get optimal
performance on SMP.
Signed-off-by: Eric Dumazet <edumazet@google.com>
Cc: Ben Hutchings <bhutchings@solarflare.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/uapi/linux/gen_stats.h')
| -rw-r--r-- | include/uapi/linux/gen_stats.h | 11 |
1 files changed, 11 insertions, 0 deletions
diff --git a/include/uapi/linux/gen_stats.h b/include/uapi/linux/gen_stats.h index 552c8a0a12d1..6487317ea619 100644 --- a/include/uapi/linux/gen_stats.h +++ b/include/uapi/linux/gen_stats.h @@ -9,6 +9,7 @@ enum { TCA_STATS_RATE_EST, TCA_STATS_QUEUE, TCA_STATS_APP, + TCA_STATS_RATE_EST64, __TCA_STATS_MAX, }; #define TCA_STATS_MAX (__TCA_STATS_MAX - 1) @@ -38,6 +39,16 @@ struct gnet_stats_rate_est { }; /** + * struct gnet_stats_rate_est64 - rate estimator + * @bps: current byte rate + * @pps: current packet rate + */ +struct gnet_stats_rate_est64 { + __u64 bps; + __u64 pps; +}; + +/** * struct gnet_stats_queue - queuing statistics * @qlen: queue length * @backlog: backlog size of queue |