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/*
* gred - Simple usage of GRED (abusing DSMARK to set skb->tc_index)
*
* Three flows sending at the same rate are handled with different drop
* priorities by GRED.
*/
#define GRED_COMMON limit 60kB min 15kB max 45kB burst 20 avpkt 1000 \
bandwidth 4Mbit
#define DP(n) IP_HDR($ip_tos=n)
#define PAYLOAD 0 x 980 /* 1000-sizeof(iphdr) = 980 bytes */
dev eth0 4000 /* 4 Mbps */
tc qdisc add dev eth0 root handle 1:0 dsmark indices 4 set_tc_index
tc qdisc add dev eth0 parent 1:0 handle 2:0 gred setup DPs 3 default 1
tc qdisc change dev eth0 handle 2:0 gred DP 1 probability 0.1 GRED_COMMON
tc qdisc change dev eth0 handle 2:0 gred DP 2 probability 0.2 GRED_COMMON
tc qdisc change dev eth0 handle 2:0 gred DP 3 probability 0.3 GRED_COMMON
every 0.005s send DP(1) PAYLOAD /* 1.6 Mbps */
every 0.005s send DP(2) PAYLOAD /* 1.6 Mbps */
every 0.005s send DP(3) PAYLOAD /* 1.6 Mbps */
time 10s
end
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