bpf: Support all gso types in bpf_skb_change_proto()

Since we no longer modify gso_size, it is now theoretically
safe to not set SKB_GSO_DODGY and reset gso_segs to zero.

This also means the skb_is_gso_tcp() check should no longer
be necessary.

Unfortunately we cannot remove the skb_{decrease,increase}_gso_size()
helpers, as they are still used elsewhere:

  bpf_skb_net_grow() without BPF_F_ADJ_ROOM_FIXED_GSO
  bpf_skb_net_shrink() without BPF_F_ADJ_ROOM_FIXED_GSO
  net/core/lwt_bpf.c's handle_gso_type()

Signed-off-by: Maciej Żenczykowski <[email protected]>
Signed-off-by: Daniel Borkmann <[email protected]>
Cc: Dongseok Yi <[email protected]>
Cc: Willem de Bruijn <[email protected]>
Link: https://lore.kernel.org/bpf/[email protected]

0 files changed, 0 insertions, 0 deletions