diff options
| author | Leon Hwang <leon.hwang@linux.dev> | 2026-06-02 23:09:30 +0800 |
|---|---|---|
| committer | Alexei Starovoitov <ast@kernel.org> | 2026-06-05 15:28:28 -0700 |
| commit | 82d7d0adbc678064543e9d254864f6b4ea4a388c (patch) | |
| tree | 5420abdf68d3ab937442faa379038a55299d20fc /include/linux/timerqueue.h | |
| parent | b9845290525cf19d29f3a0d06ae3feb923f60e4c (diff) | |
bpf: Update transport_header when encapsulating UDP tunnel in lwt
Currently, bpf_lwt_push_ip_encap() does not update skb->transport_header.
When a driver, e.g. ice, reuses the stale skb->transport_header to
offload checksum computation to NIC hardware, VxLAN packets encapsulated
by bpf_lwt_push_encap() helper may be dropped due to incorrect checksum.
Update skb->transport_header in bpf_lwt_push_ip_encap() whenever the
encapsulated packet uses UDP, so checksum offload works correctly.
Fixes: 52f278774e79 ("bpf: implement BPF_LWT_ENCAP_IP mode in bpf_lwt_push_encap")
Cc: Leon Hwang <leon.huangfu@shopee.com>
Signed-off-by: Leon Hwang <leon.hwang@linux.dev>
Link: https://lore.kernel.org/r/20260602150931.49629-2-leon.hwang@linux.dev
Signed-off-by: Alexei Starovoitov <ast@kernel.org>
Diffstat (limited to 'include/linux/timerqueue.h')
0 files changed, 0 insertions, 0 deletions