| #!/bin/bash | |
| # SPDX-License-Identifier: GPL-2.0 | |
| # shellcheck disable=SC2154 | |
| # | |
| # Reproduce the non-Ethernet header_ops confusion scenario with: | |
| # g0 (gre) -> b0 (bond) -> t0 (team) | |
| # | |
| # Before the fix, direct header_ops inheritance in this stack could call | |
| # callbacks with the wrong net_device context and crash. | |
| lib_dir=$(dirname "$0") | |
| source "$lib_dir"/../../../net/lib.sh | |
| trap cleanup_all_ns EXIT | |
| setup_ns ns1 | |
| ip -n "$ns1" link add d0 type dummy | |
| ip -n "$ns1" addr add 10.10.10.1/24 dev d0 | |
| ip -n "$ns1" link set d0 up | |
| ip -n "$ns1" link add g0 type gre local 10.10.10.1 | |
| ip -n "$ns1" link add b0 type bond mode active-backup | |
| ip -n "$ns1" link add t0 type team | |
| ip -n "$ns1" link set g0 master b0 | |
| ip -n "$ns1" link set b0 master t0 | |
| ip -n "$ns1" link set g0 up | |
| ip -n "$ns1" link set b0 up | |
| ip -n "$ns1" link set t0 up | |
| # IPv6 address assignment triggers MLD join reports that call | |
| # dev_hard_header() on t0, exercising the inherited header_ops path. | |
| ip -n "$ns1" -6 addr add 2001:db8:1::1/64 dev t0 nodad | |
| for i in $(seq 1 20); do | |
| ip netns exec "$ns1" ping -6 -I t0 ff02::1 -c1 -W1 &>/dev/null || true | |
| done | |
| echo "PASS: non-Ethernet header_ops stacking did not crash" | |
| exit "$EXIT_STATUS" |