Subject: [PATCH iproute2-next 1/3] bpf_glue: Remove use of bpf_load_program from libbpf

From: David Ahern <[email-masked]>
Date: Sun, 27 Feb 2022 18:58:38 -0700

bpf_load_program is deprecated starting in v0.7. The preferred
bpf_prog_load requires bpf_prog_load_opts from v0.6. This creates an
ugly scenario for iproute2 to work across libbpf versions from v0.1
and up.

Since bpf_program_load is only used to load the builtin vrf program,
just remove the libbpf call and use the legacy code.

Signed-off-by: David Ahern <[email-masked]>
---
 lib/bpf_glue.c   | 12 ------------
 lib/bpf_legacy.c |  7 +++++++
 2 files changed, 7 insertions(+), 12 deletions(-)

diff --git a/lib/bpf_glue.c b/lib/bpf_glue.c
index 70d001840f7b..cc3015487c68 100644
--- a/lib/bpf_glue.c
+++ b/lib/bpf_glue.c
@@ -11,18 +11,6 @@
 #include <bpf/bpf.h>
 #endif
 
-int bpf_program_load(enum bpf_prog_type type, const struct bpf_insn *insns,
-		     size_t size_insns, const char *license, char *log,
-		     size_t size_log)
-{
-#ifdef HAVE_LIBBPF
-	return bpf_load_program(type, insns, size_insns / sizeof(struct bpf_insn),
-				license, 0, log, size_log);
-#else
-	return bpf_prog_load_dev(type, insns, size_insns, license, 0, log, size_log);
-#endif
-}
-
 int bpf_program_attach(int prog_fd, int target_fd, enum bpf_attach_type type)
 {
 #ifdef HAVE_LIBBPF
diff --git a/lib/bpf_legacy.c b/lib/bpf_legacy.c
index 6e3891c9f1f1..3779ae90cc1c 100644
--- a/lib/bpf_legacy.c
+++ b/lib/bpf_legacy.c
@@ -1126,6 +1126,13 @@ int bpf_prog_load_dev(enum bpf_prog_type type, const struct bpf_insn *insns,
 	return bpf(BPF_PROG_LOAD, &attr, sizeof(attr));
 }
 
+int bpf_program_load(enum bpf_prog_type type, const struct bpf_insn *insns,
+		     size_t size_insns, const char *license, char *log,
+		     size_t size_log)
+{
+	return bpf_prog_load_dev(type, insns, size_insns, license, 0, log, size_log);
+}
+
 #ifdef HAVE_ELF
 struct bpf_elf_prog {
 	enum bpf_prog_type	type;
-- 
2.24.3 (Apple Git-128)