Re: [PATCH bpf-next v3 0/7] Add attach_type in bpf_link

On Wed, Jul 09, 2025 at 11:07 AM +08, Tao Chen wrote:

Andrii suggested moving the attach_type into bpf_link, the previous discussion
is as follows:
https://lore.kernel.org/bpf/CAEf4BzY7TZRjxpCJM-+LYgEqe23YFj5Uv3isb7gat2-HU4OSng@mail.gmail.com (local)

patch1 add attach_type in bpf_link, and pass it to bpf_link_init, which
will init the attach_type field.

patch2-7 remove the attach_type in struct bpf_xx_link, update the info
with bpf_link attach_type.

There are some functions finally call bpf_link_init but do not have bpf_attr
from user or do not need to init attach_type from user like bpf_raw_tracepoint_open,
now use prog->expected_attach_type to init attach_type.

bpf_struct_ops_map_update_elem
bpf_raw_tracepoint_open
bpf_struct_ops_test_run

Feedback of any kind is welcome, thanks.

Tao Chen (7):
  bpf: Add attach_type in bpf_link
  bpf: Remove attach_type in bpf_cgroup_link
  bpf: Remove attach_type in sockmap_link
  bpf: Remove location field in tcx_link
  bpf: Remove attach_type in bpf_netns_link
  bpf: Remove attach_type in bpf_tracing_link
  netkit: Remove location field in netkit_link

For the series:

Reviewed-by: Jakub Sitnicki <jakub@cloudflare.com>