Messages in this thread | | | Date | Sun, 12 Dec 2021 20:19:26 +0200 | From | Vladimir Oltean <> | Subject | Re: [net-next RFC PATCH v4 01/15] net: dsa: provide switch operations for tracking the master state |
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Hi Florian,
On Sat, Dec 11, 2021 at 08:22:39PM -0800, Florian Fainelli wrote: > If my kernel is built with no packet scheduler, is not the interface going > to be configured with noop all of the time?
I made this test and it looks like interfaces that are down use noop, normal multi-queue interfaces use mq, and stacked interfaces using LLTX like DSA use noqueue when up:
root@debian:~# zcat /proc/config.gz | grep NET_SCHED # CONFIG_NET_SCHED is not set root@debian:~# ip a 1: lo: <LOOPBACK,UP,LOWER_UP> mtu 65536 qdisc noqueue state UNKNOWN group default qlen 1000 link/loopback 00:00:00:00:00:00 brd 00:00:00:00:00:00 inet 127.0.0.1/8 scope host lo valid_lft forever preferred_lft forever inet6 ::1/128 scope host valid_lft forever preferred_lft forever 2: bond0: <BROADCAST,MULTICAST,MASTER> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether 02:0b:67:72:9a:d5 brd ff:ff:ff:ff:ff:ff 3: sit0@NONE: <NOARP> mtu 1480 qdisc noop state DOWN group default qlen 1000 link/sit 0.0.0.0 brd 0.0.0.0 4: eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1508 qdisc mq state UP group default qlen 1000 link/ether de:79:92:89:2e:e6 brd ff:ff:ff:ff:ff:ff altname enp0s0f2 inet6 fe80::dc79:92ff:fe89:2ee6/64 scope link valid_lft forever preferred_lft forever 5: swp0@eno2: <BROADCAST,MULTICAST> mtu 1504 qdisc noop state DOWN group default qlen 1000 link/ether a6:f4:af:fd:fc:73 brd ff:ff:ff:ff:ff:ff 6: swp1@eno2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether a6:f4:af:fd:fc:73 brd ff:ff:ff:ff:ff:ff 7: swp2@eno2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1504 qdisc noqueue state UP group default qlen 1000 link/ether a6:f4:af:fd:fc:73 brd ff:ff:ff:ff:ff:ff inet6 fe80::a4f4:afff:fefd:fc73/64 scope link valid_lft forever preferred_lft forever 8: sw0p0@swp0: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether a6:f4:af:fd:fc:73 brd ff:ff:ff:ff:ff:ff 9: sw0p1@swp0: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether a6:f4:af:fd:fc:73 brd ff:ff:ff:ff:ff:ff 10: sw0p2@swp0: <BROADCAST,MULTICAST,M-DOWN> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether a6:f4:af:fd:fc:73 brd ff:ff:ff:ff:ff:ff 11: sw2p0@swp2: <BROADCAST,MULTICAST,UP,LOWER_UP> mtu 1500 qdisc noqueue state UP group default qlen 1000 link/ether a6:f4:af:fd:fc:73 brd ff:ff:ff:ff:ff:ff inet6 fe80::a4f4:afff:fefd:fc73/64 scope link valid_lft forever preferred_lft forever 12: sw2p1@swp2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether a6:f4:af:fd:fc:73 brd ff:ff:ff:ff:ff:ff 13: sw2p2@swp2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether a6:f4:af:fd:fc:73 brd ff:ff:ff:ff:ff:ff 14: sw2p3@swp2: <BROADCAST,MULTICAST> mtu 1500 qdisc noop state DOWN group default qlen 1000 link/ether a6:f4:af:fd:fc:73 brd ff:ff:ff:ff:ff:ff
Would this test be sufficient or do you have a specific concern?
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