From 13d2a1d2b032de08d7dcab6a1edcd47802681f96 Mon Sep 17 00:00:00 2001 From: Patrick McHardy Date: Thu, 20 Nov 2008 04:10:00 -0800 Subject: pkt_sched: add DRR scheduler Add classful DRR scheduler as a more flexible replacement for SFQ. The main difference to the algorithm described in "Efficient Fair Queueing using Deficit Round Robin" is that this implementation doesn't drop packets from the longest queue on overrun because its classful and limits are handled by each individual child qdisc. Signed-off-by: Patrick McHardy Signed-off-by: David S. Miller --- include/linux/pkt_sched.h | 16 ++++++++++++++++ 1 file changed, 16 insertions(+) (limited to 'include') diff --git a/include/linux/pkt_sched.h b/include/linux/pkt_sched.h index 5d921fa91a5..e3f133adba7 100644 --- a/include/linux/pkt_sched.h +++ b/include/linux/pkt_sched.h @@ -500,4 +500,20 @@ struct tc_netem_corrupt #define NETEM_DIST_SCALE 8192 +/* DRR */ + +enum +{ + TCA_DRR_UNSPEC, + TCA_DRR_QUANTUM, + __TCA_DRR_MAX +}; + +#define TCA_DRR_MAX (__TCA_DRR_MAX - 1) + +struct tc_drr_stats +{ + u32 deficit; +}; + #endif -- cgit v1.2.3