bpftool: Support new prog types and attach types

Add recently added prog types to `bpftool prog` and attach types to
`bpftool cgroup`.

Update bpftool documentation and bash completion appropriately.

Signed-off-by: Andrey Ignatov <rdna@fb.com>
Acked-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

tools/bpf/bpftool/Documentation/bpftool-cgroup.rst

@@ -26,7 +26,8 @@ MAP COMMANDS
 |	**bpftool** **cgroup help**
 |
 |	*PROG* := { **id** *PROG_ID* | **pinned** *FILE* | **tag** *PROG_TAG* }
-|	*ATTACH_TYPE* := { **ingress** | **egress** | **sock_create** | **sock_ops** | **device** }
+|	*ATTACH_TYPE* := { **ingress** | **egress** | **sock_create** | **sock_ops** | **device** |
+|		**bind4** | **bind6** | **post_bind4** | **post_bind6** | **connect4** | **connect6** }
 |	*ATTACH_FLAGS* := { **multi** | **override** }
 
 DESCRIPTION
@@ -63,7 +64,13 @@ DESCRIPTION
 		  **egress** egress path of the inet socket (since 4.10);
 		  **sock_create** opening of an inet socket (since 4.10);
 		  **sock_ops** various socket operations (since 4.12);
-		  **device** device access (since 4.15).
+		  **device** device access (since 4.15);
+		  **bind4** call to bind(2) for an inet4 socket (since 4.17);
+		  **bind6** call to bind(2) for an inet6 socket (since 4.17);
+		  **post_bind4** return from bind(2) for an inet4 socket (since 4.17);
+		  **post_bind6** return from bind(2) for an inet6 socket (since 4.17);
+		  **connect4** call to connect(2) for an inet4 socket (since 4.17);
+		  **connect6** call to connect(2) for an inet6 socket (since 4.17).
 
 	**bpftool cgroup detach** *CGROUP* *ATTACH_TYPE* *PROG*
 		  Detach *PROG* from the cgroup *CGROUP* and attach type