diff options
| author | Eric Dumazet <eric.dumazet@gmail.com> | 2011-12-09 02:46:45 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2011-12-09 13:46:15 -0500 |
| commit | a73ed26bbae7327370c5bd298f07de78df9e3466 (patch) | |
| tree | 3c7a04e638261cdd16c324ecd07e303e72fac3b9 /include/linux/pkt_sched.h | |
| parent | 0221cd51543972782af558c527e4ac58b32049fa (diff) | |
sch_red: generalize accurate MAX_P support to RED/GRED/CHOKE
Now RED uses a Q0.32 number to store max_p (max probability), allow
RED/GRED/CHOKE to use/report full resolution at config/dump time.
Old tc binaries are non aware of new attributes, and still set/get Plog.
New tc binary set/get both Plog and max_p for backward compatibility,
they display "probability value" if they get max_p from new kernels.
# tc -d qdisc show dev ...
...
qdisc red 10: parent 1:1 limit 360Kb min 30Kb max 90Kb ecn ewma 5
probability 0.09 Scell_log 15
Make sure we avoid potential divides by 0 in reciprocal_value(), if
(max_th - min_th) is big.
Signed-off-by: Eric Dumazet <eric.dumazet@gmail.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 | 2 |
1 files changed, 2 insertions, 0 deletions
diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h index e41e0d4de24..8786ea741f5 100644 --- a/include/linux/pkt_sched.h +++ b/include/linux/pkt_sched.h @@ -216,6 +216,7 @@ enum { TCA_GRED_PARMS, TCA_GRED_STAB, TCA_GRED_DPS, + TCA_GRED_MAX_P, __TCA_GRED_MAX, }; @@ -255,6 +256,7 @@ enum { TCA_CHOKE_UNSPEC, TCA_CHOKE_PARMS, TCA_CHOKE_STAB, + TCA_CHOKE_MAX_P, __TCA_CHOKE_MAX, }; |