bpf: add allocation annotations to functions

In commit 80da7ef ("eal: annotate allocation functions")
helper macros were added to provide compiler information to
detect misuse of alloc/free combinations. This covered many
of the functions in DPDK but missed the case of data allocated
by BPF load functions.

Signed-off-by: Stephen Hemminger <[email protected]>
Acked-by: Konstantin Ananyev <[email protected]>
Reviewed-by: Marat Khalili <[email protected]>

Author: shemminger

lib/bpf/rte_bpf.h

@@ -18,6 +18,7 @@
 
 #include <rte_common.h>
 #include <rte_mbuf.h>
+#include <rte_malloc.h>
 #include <bpf_def.h>
 
 #ifdef __cplusplus
@@ -128,7 +129,8 @@ rte_bpf_destroy(struct rte_bpf *bpf);
  *   - ENOMEM - can't reserve enough memory
  */
 struct rte_bpf *
-rte_bpf_load(const struct rte_bpf_prm *prm);
+rte_bpf_load(const struct rte_bpf_prm *prm)
+	__rte_malloc __rte_dealloc(rte_bpf_destroy, 1);
 
 /**
  * Create a new eBPF execution context and load BPF code from given ELF
@@ -152,7 +154,9 @@ rte_bpf_load(const struct rte_bpf_prm *prm);
  */
 struct rte_bpf *
 rte_bpf_elf_load(const struct rte_bpf_prm *prm, const char *fname,
-		const char *sname);
+		const char *sname)
+	__rte_malloc __rte_dealloc(rte_bpf_destroy, 1);
+
 /**
  * Execute given BPF bytecode.
  *
@@ -228,7 +232,8 @@ struct bpf_program;
  *   - ENOTSUP - operation not supported
  */
 struct rte_bpf_prm *
-rte_bpf_convert(const struct bpf_program *prog);
+rte_bpf_convert(const struct bpf_program *prog)
+	__rte_malloc __rte_dealloc_free;
 
 #ifdef __cplusplus
 }