While implementing PoC building blocks for eBPF code XDP+TC that can
manipulate VLANs headers, I discovered a bug in generic-XDP.
The fix should be backported to stable kernels. Even-though
generic-XDP were introduced in v4.12, I think the bug is not exposed
until v4.14 in the mentined fixes commit.
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p.s. send from Embedded Recipes 2018 in Paris
Jesper Dangaard Brouer (3):
net: fix generic XDP to handle if eth header was mangled
bpf: make TC vlan bpf_helpers avail to selftests
selftests/bpf: add XDP selftests for modifying and popping VLAN headers
net/core/dev.c | 14 +
tools/testing/selftests/bpf/Makefile | 5
tools/testing/selftests/bpf/bpf_helpers.h | 4
tools/testing/selftests/bpf/test_xdp_vlan.c | 292 ++++++++++++++++++++++++++
tools/testing/selftests/bpf/test_xdp_vlan.sh | 195 +++++++++++++++++
5 files changed, 508 insertions(+), 2 deletions(-)
create mode 100644 tools/testing/selftests/bpf/test_xdp_vlan.c
create mode 100755 tools/testing/selftests/bpf/test_xdp_vlan.sh
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