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bpf: report offload info to user space

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Extend struct bpf_prog_info to contain information about program
being bound to a device.  Since the netdev may get destroyed while
program still exists we need a flag to indicate the program is
loaded for a device, even if the device is gone.

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>
This commit is contained in:
Jakub Kicinski
2017-11-03 13:56:18 -07:00
committed by David S. Miller
parent ab3f0063c4
commit bd601b6ada
4 changed files with 24 additions and 0 deletions
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6
include/uapi/linux/bpf.h
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@@ -895,6 +895,10 @@ 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;
@@ -908,6 +912,8 @@ 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 {