mirror of
git://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
synced 2025-08-05 16:54:27 +00:00
81 lines
2 KiB
Bash
81 lines
2 KiB
Bash
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#!/bin/bash
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# SPDX-License-Identifier: GPL-2.0
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set -e
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NSIM_LRO_ID=$((256 + RANDOM % 256))
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NSIM_LRO_SYS=/sys/bus/netdevsim/devices/netdevsim$NSIM_LRO_ID
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NSIM_DEV_SYS_NEW=/sys/bus/netdevsim/new_device
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NSIM_DEV_SYS_DEL=/sys/bus/netdevsim/del_device
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cleanup()
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{
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set +e
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ip link del dummyteam &>/dev/null
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ip link del team0 &>/dev/null
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echo $NSIM_LRO_ID > $NSIM_DEV_SYS_DEL
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modprobe -r netdevsim
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}
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# Trigger LRO propagation to the lower.
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# https://lore.kernel.org/netdev/aBvOpkIoxcr9PfDg@mini-arch/
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team_lro()
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{
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# using netdevsim because it supports NETIF_F_LRO
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NSIM_LRO_NAME=$(find $NSIM_LRO_SYS/net -maxdepth 1 -type d ! \
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-path $NSIM_LRO_SYS/net -exec basename {} \;)
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ip link add name team0 type team
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ip link set $NSIM_LRO_NAME down
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ip link set dev $NSIM_LRO_NAME master team0
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ip link set team0 up
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ethtool -K team0 large-receive-offload off
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ip link del team0
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}
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# Trigger promisc propagation to the lower during IFLA_MASTER.
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# https://lore.kernel.org/netdev/20250506032328.3003050-1-sdf@fomichev.me/
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team_promisc()
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{
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ip link add name dummyteam type dummy
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ip link add name team0 type team
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ip link set dummyteam down
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ip link set team0 promisc on
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ip link set dev dummyteam master team0
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ip link set team0 up
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ip link del team0
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ip link del dummyteam
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}
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# Trigger promisc propagation to the lower via netif_change_flags (aka
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# ndo_change_rx_flags).
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# https://lore.kernel.org/netdev/20250514220319.3505158-1-stfomichev@gmail.com/
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team_change_flags()
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{
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ip link add name dummyteam type dummy
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ip link add name team0 type team
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ip link set dummyteam down
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ip link set dev dummyteam master team0
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ip link set team0 up
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ip link set team0 promisc on
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# Make sure we can add more L2 addresses without any issues.
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ip link add link team0 address 00:00:00:00:00:01 team0.1 type macvlan
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ip link set team0.1 up
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ip link del team0.1
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ip link del team0
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ip link del dummyteam
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}
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trap cleanup EXIT
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modprobe netdevsim || :
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echo $NSIM_LRO_ID > $NSIM_DEV_SYS_NEW
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udevadm settle
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team_lro
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team_promisc
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team_change_flags
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