Eric Lee / smarc-fsl-linux-kernel

27 Apr, 2016

1 commit

11 Jun, 2013

1 commit

  • 45203a3b3   net_sched: add 64bit rate estimators ... Browse Code »

    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
    Cc: Ben Hutchings
    Signed-off-by: David S. Miller

    Eric Dumazet
     

13 Oct, 2012

1 commit