Re: [RFC PATCH bpf-next 4/5] bpftool: Add link dump support for BPF_LINK_TYPE_SK_MSG

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On 3/8/24 8:07 AM, Jakub Sitnicki wrote:
On Tue, Mar 05, 2024 at 12:22 PM -08, Yonghong Song wrote:
An example output looks like:
   9: sk_msg  prog 108
           map_id 84  attach_type sk_msg_verdict

Signed-off-by: Yonghong Song <yonghong.song@xxxxxxxxx>
---
  tools/bpf/bpftool/link.c | 8 ++++++++
  1 file changed, 8 insertions(+)

diff --git a/tools/bpf/bpftool/link.c b/tools/bpf/bpftool/link.c
index afde9d0c2ea1..5eb140197d3f 100644
--- a/tools/bpf/bpftool/link.c
+++ b/tools/bpf/bpftool/link.c
@@ -526,6 +526,9 @@ static int show_link_close_json(int fd, struct bpf_link_info *info)
  		show_link_ifindex_json(info->netkit.ifindex, json_wtr);
  		show_link_attach_type_json(info->netkit.attach_type, json_wtr);
  		break;
+	case BPF_LINK_TYPE_SK_MSG:
+		jsonw_uint_field(json_wtr, "map_id", info->skmsg.map_id);
+		show_link_attach_type_json(info->skmsg.attach_type, json_wtr);
Compiler says - missing break.

Ack, will fix.


  	case BPF_LINK_TYPE_XDP:
  		show_link_ifindex_json(info->xdp.ifindex, json_wtr);
  		break;
@@ -915,6 +918,11 @@ static int show_link_close_plain(int fd, struct bpf_link_info *info)
  		show_link_ifindex_plain(info->netkit.ifindex);
  		show_link_attach_type_plain(info->netkit.attach_type);
  		break;
+	case BPF_LINK_TYPE_SK_MSG:
+		printf("\n\t");
+		printf("map_id %u  ", info->skmsg.map_id);
+		show_link_attach_type_plain(info->skmsg.attach_type);
+		break;
  	case BPF_LINK_TYPE_XDP:
  		printf("\n\t");
  		show_link_ifindex_plain(info->xdp.ifindex);




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