diff options
| author |   stephen hemminger <shemminger@vyatta.com> | 2011-02-23 13:04:21 +0000 |
|---|---|---|
| committer |   David S. Miller <davem@davemloft.net> | 2011-02-24 22:11:56 -0800 |
| commit | 661b79725fea030803a89a16cda506bac8eeca78 (patch) | |
| tree | b13a294ecb7696c2c96db88f5b98627f5c4d4ad5 /include/linux/pkt_sched.h | |
| parent | Revert "sch_netem: Remove classful functionality" (diff) | |
| download | linux-dev-661b79725fea030803a89a16cda506bac8eeca78.tar.xz linux-dev-661b79725fea030803a89a16cda506bac8eeca78.zip | |
netem: revised correlated loss generator
This is a patch originated with Stefano Salsano and Fabio Ludovici.
It provides several alternative loss models for use with netem.
This patch adds two state machine based loss models.
See: http://netgroup.uniroma2.it/twiki/bin/view.cgi/Main/NetemCLG
Signed-off-by: Stephen Hemminger <shemminger@vyatta.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/linux/pkt_sched.h')
| -rw-r--r-- | include/linux/pkt_sched.h | 26 |
1 files changed, 26 insertions, 0 deletions
diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h index 891382268fe1..b1032a3fafdc 100644 --- a/include/linux/pkt_sched.h +++ b/include/linux/pkt_sched.h @@ -464,6 +464,7 @@ enum { TCA_NETEM_DELAY_DIST, TCA_NETEM_REORDER, TCA_NETEM_CORRUPT, + TCA_NETEM_LOSS, __TCA_NETEM_MAX, }; @@ -494,6 +495,31 @@ struct tc_netem_corrupt { __u32 correlation; }; +enum { + NETEM_LOSS_UNSPEC, + NETEM_LOSS_GI, /* General Intuitive - 4 state model */ + NETEM_LOSS_GE, /* Gilbert Elliot models */ + __NETEM_LOSS_MAX +}; +#define NETEM_LOSS_MAX (__NETEM_LOSS_MAX - 1) + +/* State transition probablities for 4 state model */ +struct tc_netem_gimodel { + __u32 p13; + __u32 p31; + __u32 p32; + __u32 p14; + __u32 p23; +}; + +/* Gilbert-Elliot models */ +struct tc_netem_gemodel { + __u32 p; + __u32 r; + __u32 h; + __u32 k1; +}; + #define NETEM_DIST_SCALE 8192 #define NETEM_DIST_MAX 16384 |