bpftool: print program device bound info

If program is bound to a device, print the name of the relevant
interface or unknown if the netdev has since been removed.

Signed-off-by: Jakub Kicinski <jakub.kicinski@netronome.com>
Reviewed-by: Simon Horman <simon.horman@netronome.com>
Reviewed-by: Quentin Monnet <quentin.monnet@netronome.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 7 insertions, 0 deletions

diff --git a/tools/include/uapi/linux/bpf.h b/tools/include/uapi/linux/bpf.h
index 7cebba491011..e92f62cf933a 100644
--- a/tools/include/uapi/linux/bpf.h
+++ b/tools/include/uapi/linux/bpf.h
@@ -259,6 +259,7 @@ union bpf_attr {
                 __u32           kern_version;   /* checked when prog_type=kprobe */
                 __u32           prog_flags;
                 char            prog_name[BPF_OBJ_NAME_LEN];
+                __u32           prog_target_ifindex;    /* ifindex of netdev to prep for */
         };
 
         struct { /* anonymous struct used by BPF_OBJ_* commands */
@@ -893,6 +894,10 @@ enum sk_action {
 
 #define BPF_TAG_SIZE    8
 
+enum bpf_prog_status {
+        BPF_PROG_STATUS_DEV_BOUND       = (1 << 0),
+};
+
 struct bpf_prog_info {
         __u32 type;
         __u32 id;
@@ -906,6 +911,8 @@ struct bpf_prog_info {
         __u32 nr_map_ids;
         __aligned_u64 map_ids;
         char name[BPF_OBJ_NAME_LEN];
+        __u32 ifindex;
+        __u32 status;
 } __attribute__((aligned(8)));
 
 struct bpf_map_info {