tc: bpf: generalize pedit action

existing TC action 'pedit' can munge any bits of the packet.
Generalize it for use in bpf programs attached as cls_bpf and act_bpf via
bpf_skb_store_bytes() helper function.

Signed-off-by: Alexei Starovoitov <ast@plumgrid.com>
Reviewed-by: Jiri Pirko <jiri@resnulli.us>
Acked-by: Daniel Borkmann <daniel@iogearbox.net>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 2 insertions, 0 deletions

diff --git a/kernel/bpf/verifier.c b/kernel/bpf/verifier.c
index 0e714f799ec0..630a7bac1e51 100644
--- a/kernel/bpf/verifier.c
+++ b/kernel/bpf/verifier.c
@@ -773,6 +773,8 @@ static int check_func_arg(struct verifier_env *env, u32 regno,
                 expected_type = CONST_IMM;
         } else if (arg_type == ARG_CONST_MAP_PTR) {
                 expected_type = CONST_PTR_TO_MAP;
+        } else if (arg_type == ARG_PTR_TO_CTX) {
+                expected_type = PTR_TO_CTX;
         } else {
                 verbose("unsupported arg_type %d\n", arg_type);
                 return -EFAULT;