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fq.h: Port memory limit mechanism from fq_codel

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The reusable fairness queueing implementation (fq.h) lacks the memory
usage limit that the fq_codel qdisc has. This means that small
devices (e.g. WiFi routers) can run out of memory when flooded with a
large number of packets. This ports the memory limit feature from
fq_codel to fq.h.

Signed-off-by: Toke Høiland-Jørgensen <toke@toke.dk>
Signed-off-by: Johannes Berg <johannes.berg@intel.com>
This commit is contained in:
Toke Høiland-Jørgensen 2016-09-23 21:59:09 +02:00 • committed by Johannes Berg
parent 92bc43bce2
commit 097b065b5c
2 changed files with 9 additions and 1 deletions
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3
include/net/fq.h
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@ -72,9 +72,12 @@ struct fq {
u32 flows_cnt;
u32 perturbation;
u32 limit;
u32 memory_limit;
u32 memory_usage;
u32 quantum;
u32 backlog;
u32 overlimit;
u32 overmemory;
u32 collisions;
};