On 10/17/19 8:00 AM, Carlos Neira wrote:
> sync tools/include/uapi/linux/bpf.h to include new helper.
>
> Signed-off-by: Carlos Neira <cneirabus...@gmail.com>
> ---
> tools/include/uapi/linux/bpf.h | 20 +++++++++++++++++++-
> 1 file changed, 19 insertions(+), 1 deletion(-)
>
> diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
> index a65c3b0c6935..a17583ae9aa3 100644
> --- a/tools/include/uapi/linux/bpf.h
> +++ b/tools/include/uapi/linux/bpf.h
> @@ -2750,6 +2750,19 @@ union bpf_attr {
> * **-EOPNOTSUPP** kernel configuration does not enable SYN cookies
> *
> * **-EPROTONOSUPPORT** IP packet version is not 4 or 6
> + *
> + * u64 bpf_get_ns_current_pid_tgid(u64 dev, u64 ino, struct bpf_pidns_info
> *nsdata, u32 size)
> + * Description
> + * Returns 0 on success, values for *pid* and *tgid* as seen from
> the current
> + * *namespace* will be returned in *nsdata*.
> + *
> + * On failure, the returned value is one of the following:
> + *
> + * **-EINVAL** if dev and inum supplied don't match dev_t and
> inode number
> + * with nsfs of current task, or if dev conversion to dev_t
> lost high bits.
> + *
> + * **-ENOENT** if /proc/self/ns does not exists.
The same return type and description changes as suggested in my
previous comment.
> + *
> */
> #define __BPF_FUNC_MAPPER(FN) \
> FN(unspec), \
> @@ -2862,7 +2875,8 @@ union bpf_attr {
> FN(sk_storage_get), \
> FN(sk_storage_delete), \
> FN(send_signal), \
> - FN(tcp_gen_syncookie),
> + FN(tcp_gen_syncookie), \
> + FN(get_ns_current_pid_tgid),
>
> /* integer value in 'imm' field of BPF_CALL instruction selects which helper
> * function eBPF program intends to call
> @@ -3613,4 +3627,8 @@ struct bpf_sockopt {
> __s32 retval;
> };
>
> +struct bpf_pidns_info {
> + __u32 pid;
> + __u32 tgid;
> +};
> #endif /* _UAPI__LINUX_BPF_H__ */
>
