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authorMartin KaFai Lau <kafai@fb.com>2017-03-22 18:00:35 +0100
committerDavid S. Miller <davem@davemloft.net>2017-03-22 23:45:45 +0100
commitfb30d4b71214aa1811e997f8f753b14b46d5b912 (patch)
treea546eefbd355792aa544c0f220b38bab4493b1aa /tools/lib
parentbpf: Add hash of maps support (diff)
downloadlinux-fb30d4b71214aa1811e997f8f753b14b46d5b912.tar.xz
linux-fb30d4b71214aa1811e997f8f753b14b46d5b912.zip
bpf: Add tests for map-in-map
Test cases for array of maps and hash of maps. Signed-off-by: Martin KaFai Lau <kafai@fb.com> Acked-by: Alexei Starovoitov <ast@kernel.org> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'tools/lib')
-rw-r--r--tools/lib/bpf/bpf.c17
-rw-r--r--tools/lib/bpf/bpf.h2
2 files changed, 19 insertions, 0 deletions
diff --git a/tools/lib/bpf/bpf.c b/tools/lib/bpf/bpf.c
index 207c2eeddab0..9b58d20e8c93 100644
--- a/tools/lib/bpf/bpf.c
+++ b/tools/lib/bpf/bpf.c
@@ -69,6 +69,23 @@ int bpf_create_map(enum bpf_map_type map_type, int key_size,
return sys_bpf(BPF_MAP_CREATE, &attr, sizeof(attr));
}
+int bpf_create_map_in_map(enum bpf_map_type map_type, int key_size,
+ int inner_map_fd, int max_entries, __u32 map_flags)
+{
+ union bpf_attr attr;
+
+ memset(&attr, '\0', sizeof(attr));
+
+ attr.map_type = map_type;
+ attr.key_size = key_size;
+ attr.value_size = 4;
+ attr.inner_map_fd = inner_map_fd;
+ attr.max_entries = max_entries;
+ attr.map_flags = map_flags;
+
+ return sys_bpf(BPF_MAP_CREATE, &attr, sizeof(attr));
+}
+
int bpf_load_program(enum bpf_prog_type type, const struct bpf_insn *insns,
size_t insns_cnt, const char *license,
__u32 kern_version, char *log_buf, size_t log_buf_sz)
diff --git a/tools/lib/bpf/bpf.h b/tools/lib/bpf/bpf.h
index 09c3dcac0496..93f021932623 100644
--- a/tools/lib/bpf/bpf.h
+++ b/tools/lib/bpf/bpf.h
@@ -26,6 +26,8 @@
int bpf_create_map(enum bpf_map_type map_type, int key_size, int value_size,
int max_entries, __u32 map_flags);
+int bpf_create_map_in_map(enum bpf_map_type map_type, int key_size,
+ int inner_map_fd, int max_entries, __u32 map_flags);
/* Recommend log buffer size */
#define BPF_LOG_BUF_SIZE 65536