Stephen Hemminger
32a121cba2
tc: code cleanup
...
Use checkpatch to fix whitespace and other style issues.
2016-03-21 11:48:36 -07:00
Stephen Hemminger
8fe9839857
fq: fix whitespace
2015-09-25 12:40:00 -07:00
Eric Dumazet
8d5bd8c302
tc: fq: allow setting and retrieving orphan_mask
...
linux-3.19 fq packet scheduler got a new attribute, controlling
number of 'flows' holding packets not attached to a socket
(forwarding usage)
kernel commit is 06eb395fa9856b5a87cf7d80baee2a0ed3cdb9d7
("pkt_sched: fq: better control of DDOS traffic")
This patch adds corresponding code to tc command.
tc qd replace dev eth0 root fq orphan_mask 511
Signed-off-by: Eric Dumazet <edumazet@google.com>
2015-09-25 12:37:09 -07:00
Phil Sutter
565af7b816
tc: fq: allow setting and retrieving flow refill delay
...
Code to parse and export this tuneable via netlink is already present in
sched_fq.c of the kernel, so not making it accessible for users would be
a waste of resources.
Signed-off-by: Phil Sutter <phil@nwl.cc>
2015-09-23 16:02:13 -07:00
Yang Yingliang
aeb199d5ce
fq: allow options of fair queue set to ~0U
...
Some options of fair queue cannot be (~0U). It leads to maxrate
cannot be reset to unlimited because it cannot be (~0U). Allow
the options being ~0U.
Tested by the following command:
# tc qdisc add dev eth4 root handle 1: fq limit 2000 flow_limit 200 maxrate 100mbit quantum 2000 initial_quantum 1600
# tc -s -d qdisc show
qdisc fq 1: dev eth4 root refcnt 2 limit 2000p flow_limit 200p buckets 1024 quantum 2000 initial_quantum 1600 maxrate 100Mbit
Sent 1492 bytes 10 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
1 flows (0 inactive, 0 throttled)
0 gc, 0 highprio, 0 throttled
# tc qdisc change dev eth4 root handle 1: fq limit 4294967295 flow_limit 4294967295 maxrate 34359738360 quantum 4294967295 initial_quantum 4294967295
# tc -s -d qdisc show
qdisc fq 1: dev eth4 root refcnt 2 limit 4294967295p flow_limit 4294967295p buckets 1024 quantum 4294967295 initial_quantum 4294967295
Sent 38372 bytes 216 pkt (dropped 0, overlimits 0 requeues 0)
backlog 0b 0p requeues 0
2 flows (1 inactive, 0 throttled)
0 gc, 2 highprio, 7 throttled
Suggested-by: Eric Dumazet <edumazet@google.com>
Signed-off-by: Yang Yingliang <yangyingliang@huawei.com>
2014-06-09 12:42:36 -07:00
Eric Dumazet
bc113e46a3
pkt_sched: fq: Fair Queue packet scheduler
...
Support for FQ packet scheduler
$ tc qd add dev eth0 root fq help
Usage: ... fq [ limit PACKETS ] [ flow_limit PACKETS ]
[ quantum BYTES ] [ initial_quantum BYTES ]
[ maxrate RATE ] [ buckets NUMBER ]
[ [no]pacing ]
$ tc -s -d qd
qdisc fq 8002: dev eth0 root refcnt 32 limit 10000p flow_limit 100p
buckets 256 quantum 3028 initial_quantum 15140
Sent 216532416 bytes 148395 pkt (dropped 0, overlimits 0 requeues 14)
backlog 0b 0p requeues 14
511 flows (511 inactive, 0 throttled)
110 gc, 0 highprio, 0 retrans, 1143 throttled, 0 flows_plimit
limit : max number of packets on whole Qdisc (default 10000)
flow_limit : max number of packets per flow (default 100)
quantum : the max deficit per RR round (default is 2 MTU)
initial_quantum : initial credit for new flows (default is 10 MTU)
maxrate : max per flow rate (default : unlimited)
buckets : number of RB trees (default : 1024) in hash table.
(consumes 8 bytes per bucket)
[no]pacing : disable/enable pacing (default is enable)
Usage :
tc qdisc add dev $ETH root fq
tc qdisc del dev $ETH root 2>/dev/null
tc qdisc add dev $ETH root handle 1: mq
for i in `seq 1 4`
do
tc qdisc add dev $ETH parent 1:$i est 1sec 4sec fq
done
Signed-off-by: Eric Dumazet <edumazet@google.com>
2013-09-20 09:43:40 -07:00
