From: Yang Bo <bo@xxxxxxxx>
update test example
Signed-off-by: Yang Bo <bo@xxxxxxxx>
---
tools/lib/bpf/mini/Makefile | 2 +
tools/lib/bpf/mini/main.c | 130 ++++++++++++++++++++++++++++++++++++
2 files changed, 132 insertions(+)
create mode 100644 tools/lib/bpf/mini/Makefile
create mode 100644 tools/lib/bpf/mini/main.c
diff --git a/tools/lib/bpf/mini/Makefile b/tools/lib/bpf/mini/Makefile
new file mode 100644
index 000000000000..c4f6901aebed
--- /dev/null
+++ b/tools/lib/bpf/mini/Makefile
@@ -0,0 +1,2 @@
+default:
+ gcc -o test main.c ../libbpf.a -lelf -lz
diff --git a/tools/lib/bpf/mini/main.c b/tools/lib/bpf/mini/main.c
new file mode 100644
index 000000000000..d245be004f20
--- /dev/null
+++ b/tools/lib/bpf/mini/main.c
@@ -0,0 +1,130 @@
+#include <stdlib.h>
+#include <stdio.h>
+#include <string.h>
+#include <errno.h>
+#include <asm/byteorder.h>
+
+#include "../bpf.h"
+
+int main(int argc, char *argv[]) {
+ struct member *member;
+ char *key, *value = NULL, *end;
+ bool update = false;
+ int err = 0;
+ __u64 data = 0;
+ __u32 id;
+ int size;
+ __u64 raw[2] = {};
+ bool print = true;
+
+#if defined(__BYTE_ORDER) ? __BYTE_ORDER == __BIG_ENDIAN : defined(__BIG_ENDIAN)
+ printf("big endian\n");
+
+#else
+ printf("little endian\n");
+#endif
+ if (argc != 3 && argc != 4) {
+ printf("invalid number of params: %d\n", argc);
+ return -1;
+ }
+
+ id = strtol(argv[1], &end, 10);
+ if (errno) {
+ printf("cannot convert map id: %s\n", argv[1]);
+ return -1;
+ }
+
+ key = strdup(argv[2]);
+ if (argc == 4) {
+ update = true;
+ value = strdup(argv[3]);
+ }
+
+ member = bpf_global_query_key(id, key);
+ if (!member) {
+ printf("can not query key: %s\n", strerror(errno));
+ return -1;
+ }
+
+ // display data
+ switch (member->size) {
+ case 64:
+ data = *(__u64 *)member->data;
+ break;
+
+ case 32:
+ data = *(__u32 *)member->data;
+ break;
+
+ case 16:
+ data = *(__u16 *)member->data;
+ break;
+
+ case 8:
+ data = *(__u8 *)member->data;
+ break;
+
+ default:
+ printf("unsupported size: %d\n", member->size);
+ size = (member->size + 7) / 8;
+ memcpy(raw, member->data, size);
+ printf("as u64: %lx, %lx\n", raw[0], raw[1]);
+ print = false;
+ }
+
+ if (print) {
+ printf("data: %ld, type: %d, size: %d\n", data, member->type, member->size);
+ }
+
+ free(member->data);
+ free(member);
+
+ print = true;
+ if (update) {
+ err = bpf_global_update_key(id, key, value);
+ if (err) {
+ printf("cannot update key: %s\n", strerror(errno));
+ return -1;
+ }
+
+ member = bpf_global_query_key(id, key);
+ if (!member) {
+ printf("can not query key: %s\n", strerror(errno));
+ return -1;
+ }
+
+ // display data
+ switch (member->size) {
+ case 64:
+ data = *(__u64 *)member->data;
+ break;
+
+ case 32:
+ data = *(__u32 *)member->data;
+ break;
+
+ case 16:
+ data = *(__u16 *)member->data;
+ break;
+
+ case 8:
+ data = *(__u8 *)member->data;
+ break;
+
+ default:
+ printf("unsupported size: %d\n", member->size);
+ size = (member->size + 7) / 8;
+ memcpy(&raw, member->data, size);
+ printf("as u64: %lx, %lx\n", raw[0], raw[1]);
+ print = false;
+ }
+
+ if (print) {
+ printf("updated data: %ld, type: %d, size: %d\n", data, member->type, member->size);
+ }
+
+ free(member->data);
+ free(member);
+ }
+ return 0;
+}
--
2.40.0
