[RFC PATCH 13/17] libbpf: Add support for dequeue program type and PIFO map type

["Toke Høiland-Jørgensen" <toke@redhat.com>]

Add support for a 'dequeue' section type to specify dequeue type programs
and add support for dequeue program and PIFO map to probing code.

Signed-off-by: Toke Høiland-Jørgensen <toke@redhat.com>
---
 tools/lib/bpf/libbpf.c        | 1 +
 tools/lib/bpf/libbpf_probes.c | 5 +++++
 2 files changed, 6 insertions(+)

diff --git a/tools/lib/bpf/libbpf.c b/tools/lib/bpf/libbpf.c
index cb49408eb298..8553bb8369e0 100644
--- a/tools/lib/bpf/libbpf.c
+++ b/tools/lib/bpf/libbpf.c
@@ -8431,6 +8431,7 @@ static const struct bpf_sec_def section_defs[] = {
 	SEC_DEF("xdp/cpumap",		XDP, BPF_XDP_CPUMAP, SEC_ATTACHABLE),
 	SEC_DEF("xdp.frags",		XDP, BPF_XDP, SEC_XDP_FRAGS),
 	SEC_DEF("xdp",			XDP, BPF_XDP, SEC_ATTACHABLE_OPT),
+	SEC_DEF("dequeue",		DEQUEUE, 0, SEC_NONE),
 	SEC_DEF("perf_event",		PERF_EVENT, 0, SEC_NONE),
 	SEC_DEF("lwt_in",		LWT_IN, 0, SEC_NONE),
 	SEC_DEF("lwt_out",		LWT_OUT, 0, SEC_NONE),
diff --git a/tools/lib/bpf/libbpf_probes.c b/tools/lib/bpf/libbpf_probes.c
index 0b5398786bf3..a9ead2d55264 100644
--- a/tools/lib/bpf/libbpf_probes.c
+++ b/tools/lib/bpf/libbpf_probes.c
@@ -97,6 +97,7 @@ static int probe_prog_load(enum bpf_prog_type prog_type,
 	case BPF_PROG_TYPE_SK_REUSEPORT:
 	case BPF_PROG_TYPE_FLOW_DISSECTOR:
 	case BPF_PROG_TYPE_CGROUP_SYSCTL:
+	case BPF_PROG_TYPE_DEQUEUE:
 		break;
 	default:
 		return -EOPNOTSUPP;
@@ -244,6 +245,10 @@ static int probe_map_create(enum bpf_map_type map_type)
 		key_size = 0;
 		max_entries = 1;
 		break;
+	case BPF_MAP_TYPE_PIFO_GENERIC:
+	case BPF_MAP_TYPE_PIFO_XDP:
+		opts.map_extra = 8;
+		break;
 	case BPF_MAP_TYPE_HASH:
 	case BPF_MAP_TYPE_ARRAY:
 	case BPF_MAP_TYPE_PROG_ARRAY:
-- 
2.37.0