diff options
Diffstat (limited to 'tools/lib/bpf/libbpf.h')
| -rw-r--r-- | tools/lib/bpf/libbpf.h | 13 |
1 files changed, 11 insertions, 2 deletions
diff --git a/tools/lib/bpf/libbpf.h b/tools/lib/bpf/libbpf.h index d3de39b537f3..916904bd2a7a 100644 --- a/tools/lib/bpf/libbpf.h +++ b/tools/lib/bpf/libbpf.h @@ -185,8 +185,16 @@ struct bpf_object_open_opts { * attempt to create BPF token from default BPF FS mount point * (/sys/fs/bpf), in case this default behavior is undesirable. * + * If bpf_token_path and bpf_token_fd are not specified, libbpf will + * consult LIBBPF_BPF_TOKEN_PATH environment variable. If set, it will + * be taken as a value of bpf_token_path option and will force libbpf + * to either create BPF token from provided custom BPF FS path, or + * will disable implicit BPF token creation, if envvar value is an + * empty string. + * * bpf_token_path and bpf_token_fd are mutually exclusive and only one - * of those options should be set. + * of those options should be set. Either of them overrides + * LIBBPF_BPF_TOKEN_PATH envvar. */ int bpf_token_fd; /* Path to BPF FS mount point to derive BPF token from. @@ -200,7 +208,8 @@ struct bpf_object_open_opts { * point (/sys/fs/bpf), in case this default behavior is undesirable. * * bpf_token_path and bpf_token_fd are mutually exclusive and only one - * of those options should be set. + * of those options should be set. Either of them overrides + * LIBBPF_BPF_TOKEN_PATH envvar. */ const char *bpf_token_path; |