selftests/bpf: convert tests w/ custom values to BTF-defined maps

Convert a bulk of selftests that have maps with custom (not integer) key
and/or value.

Signed-off-by: Andrii Nakryiko <andriin@fb.com>
Acked-by: Song Liu <songliubraving@fb.com>
Signed-off-by: Daniel Borkmann <daniel@iogearbox.net>

diff --git a/tools/testing/selftests/bpf/progs/bpf_flow.c b/tools/testing/selftests/bpf/progs/bpf_flow.c
index 81ad9a0..849f42e 100644 (file)
--- a/tools/testing/selftests/bpf/progs/bpf_flow.c
+++ b/tools/testing/selftests/bpf/progs/bpf_flow.c
@@ -57,17 +57,25 @@ struct frag_hdr {
        __be32 identification;
 };
 
-struct bpf_map_def SEC("maps") jmp_table = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 key_size;
+       __u32 value_size;
+} jmp_table SEC(".maps") = {
        .type = BPF_MAP_TYPE_PROG_ARRAY,
+       .max_entries = 8,
        .key_size = sizeof(__u32),
        .value_size = sizeof(__u32),
-       .max_entries = 8
 };
 
-struct bpf_map_def SEC("maps") last_dissection = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct bpf_flow_keys *value;
+} last_dissection SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct bpf_flow_keys),
        .max_entries = 1,
 };
 

diff --git a/tools/testing/selftests/bpf/progs/socket_cookie_prog.c b/tools/testing/selftests/bpf/progs/socket_cookie_prog.c
index 0db15c3..6aabb68 100644 (file)
--- a/tools/testing/selftests/bpf/progs/socket_cookie_prog.c
+++ b/tools/testing/selftests/bpf/progs/socket_cookie_prog.c
@@ -12,15 +12,16 @@ struct socket_cookie {
        __u32 cookie_value;
 };
 
-struct bpf_map_def SEC("maps") socket_cookies = {
+struct {
+       __u32 type;
+       __u32 map_flags;
+       int *key;
+       struct socket_cookie *value;
+} socket_cookies SEC(".maps") = {
        .type = BPF_MAP_TYPE_SK_STORAGE,
-       .key_size = sizeof(int),
-       .value_size = sizeof(struct socket_cookie),
        .map_flags = BPF_F_NO_PREALLOC,
 };
 
-BPF_ANNOTATE_KV_PAIR(socket_cookies, int, struct socket_cookie);
-
 SEC("cgroup/connect6")
 int set_cookie(struct bpf_sock_addr *ctx)
 {

diff --git a/tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c b/tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c
index f6d9f23..aaa6ec2 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c
+++ b/tools/testing/selftests/bpf/progs/test_get_stack_rawtp.c
@@ -15,17 +15,25 @@ struct stack_trace_t {
        struct bpf_stack_build_id user_stack_buildid[MAX_STACK_RAWTP];
 };
 
-struct bpf_map_def SEC("maps") perfmap = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 key_size;
+       __u32 value_size;
+} perfmap SEC(".maps") = {
        .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
+       .max_entries = 2,
        .key_size = sizeof(int),
        .value_size = sizeof(__u32),
-       .max_entries = 2,
 };
 
-struct bpf_map_def SEC("maps") stackdata_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct stack_trace_t *value;
+} stackdata_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_PERCPU_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct stack_trace_t),
        .max_entries = 1,
 };
 
@@ -47,10 +55,13 @@ struct bpf_map_def SEC("maps") stackdata_map = {
  * issue and avoid complicated C programming massaging.
  * This is an acceptable workaround since there is one entry here.
  */
-struct bpf_map_def SEC("maps") rawdata_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u64 (*value)[2 * MAX_STACK_RAWTP];
+} rawdata_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_PERCPU_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = MAX_STACK_RAWTP * sizeof(__u64) * 2,
        .max_entries = 1,
 };
 

diff --git a/tools/testing/selftests/bpf/progs/test_global_data.c b/tools/testing/selftests/bpf/progs/test_global_data.c
index 5ab14e9..866cc7d 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_global_data.c
+++ b/tools/testing/selftests/bpf/progs/test_global_data.c
@@ -7,17 +7,23 @@
 
 #include "bpf_helpers.h"
 
-struct bpf_map_def SEC("maps") result_number = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u64 *value;
+} result_number SEC(".maps") = {
        .type           = BPF_MAP_TYPE_ARRAY,
-       .key_size       = sizeof(__u32),
-       .value_size     = sizeof(__u64),
        .max_entries    = 11,
 };
 
-struct bpf_map_def SEC("maps") result_string = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       const char (*value)[32];
+} result_string SEC(".maps") = {
        .type           = BPF_MAP_TYPE_ARRAY,
-       .key_size       = sizeof(__u32),
-       .value_size     = 32,
        .max_entries    = 5,
 };
 
@@ -27,10 +33,13 @@ struct foo {
        __u64 c;
 };
 
-struct bpf_map_def SEC("maps") result_struct = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct foo *value;
+} result_struct SEC(".maps") = {
        .type           = BPF_MAP_TYPE_ARRAY,
-       .key_size       = sizeof(__u32),
-       .value_size     = sizeof(struct foo),
        .max_entries    = 5,
 };
 

diff --git a/tools/testing/selftests/bpf/progs/test_l4lb.c b/tools/testing/selftests/bpf/progs/test_l4lb.c
index 1e10c95..848cbb9 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_l4lb.c
+++ b/tools/testing/selftests/bpf/progs/test_l4lb.c
@@ -169,38 +169,53 @@ struct eth_hdr {
        unsigned short eth_proto;
 };
 
-struct bpf_map_def SEC("maps") vip_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       struct vip *key;
+       struct vip_meta *value;
+} vip_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_HASH,
-       .key_size = sizeof(struct vip),
-       .value_size = sizeof(struct vip_meta),
        .max_entries = MAX_VIPS,
 };
 
-struct bpf_map_def SEC("maps") ch_rings = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u32 *value;
+} ch_rings SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(__u32),
        .max_entries = CH_RINGS_SIZE,
 };
 
-struct bpf_map_def SEC("maps") reals = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct real_definition *value;
+} reals SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct real_definition),
        .max_entries = MAX_REALS,
 };
 
-struct bpf_map_def SEC("maps") stats = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct vip_stats *value;
+} stats SEC(".maps") = {
        .type = BPF_MAP_TYPE_PERCPU_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct vip_stats),
        .max_entries = MAX_VIPS,
 };
 
-struct bpf_map_def SEC("maps") ctl_array = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct ctl_value *value;
+} ctl_array SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct ctl_value),
        .max_entries = CTL_MAP_SIZE,
 };
 

diff --git a/tools/testing/selftests/bpf/progs/test_l4lb_noinline.c b/tools/testing/selftests/bpf/progs/test_l4lb_noinline.c
index ba44a14..c63ecf3 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_l4lb_noinline.c
+++ b/tools/testing/selftests/bpf/progs/test_l4lb_noinline.c
@@ -165,38 +165,53 @@ struct eth_hdr {
        unsigned short eth_proto;
 };
 
-struct bpf_map_def SEC("maps") vip_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       struct vip *key;
+       struct vip_meta *value;
+} vip_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_HASH,
-       .key_size = sizeof(struct vip),
-       .value_size = sizeof(struct vip_meta),
        .max_entries = MAX_VIPS,
 };
 
-struct bpf_map_def SEC("maps") ch_rings = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u32 *value;
+} ch_rings SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(__u32),
        .max_entries = CH_RINGS_SIZE,
 };
 
-struct bpf_map_def SEC("maps") reals = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct real_definition *value;
+} reals SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct real_definition),
        .max_entries = MAX_REALS,
 };
 
-struct bpf_map_def SEC("maps") stats = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct vip_stats *value;
+} stats SEC(".maps") = {
        .type = BPF_MAP_TYPE_PERCPU_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct vip_stats),
        .max_entries = MAX_VIPS,
 };
 
-struct bpf_map_def SEC("maps") ctl_array = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct ctl_value *value;
+} ctl_array SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct ctl_value),
        .max_entries = CTL_MAP_SIZE,
 };
 

diff --git a/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c b/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c
index 5b54ec6..435a952 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_select_reuseport_kern.c
@@ -21,38 +21,55 @@ int _version SEC("version") = 1;
 #define offsetof(TYPE, MEMBER) ((size_t) &((TYPE *)0)->MEMBER)
 #endif
 
-struct bpf_map_def SEC("maps") outer_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 key_size;
+       __u32 value_size;
+} outer_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY_OF_MAPS,
+       .max_entries = 1,
        .key_size = sizeof(__u32),
        .value_size = sizeof(__u32),
-       .max_entries = 1,
 };
 
-struct bpf_map_def SEC("maps") result_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u32 *value;
+} result_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(__u32),
        .max_entries = NR_RESULTS,
 };
 
-struct bpf_map_def SEC("maps") tmp_index_ovr_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       int *value;
+} tmp_index_ovr_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(int),
        .max_entries = 1,
 };
 
-struct bpf_map_def SEC("maps") linum_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u32 *value;
+} linum_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(__u32),
        .max_entries = 1,
 };
 
-struct bpf_map_def SEC("maps") data_check_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct data_check *value;
+} data_check_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct data_check),
        .max_entries = 1,
 };
 

diff --git a/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c b/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
index d86c281..fcf2280 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
+++ b/tools/testing/selftests/bpf/progs/test_stacktrace_build_id.c
@@ -8,34 +8,50 @@
 #define PERF_MAX_STACK_DEPTH         127
 #endif
 
-struct bpf_map_def SEC("maps") control_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u32 *value;
+} control_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(__u32),
        .max_entries = 1,
 };
 
-struct bpf_map_def SEC("maps") stackid_hmap = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u32 *value;
+} stackid_hmap SEC(".maps") = {
        .type = BPF_MAP_TYPE_HASH,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(__u32),
        .max_entries = 16384,
 };
 
-struct bpf_map_def SEC("maps") stackmap = {
+typedef struct bpf_stack_build_id stack_trace_t[PERF_MAX_STACK_DEPTH];
+
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 map_flags;
+       __u32 key_size;
+       __u32 value_size;
+} stackmap SEC(".maps") = {
        .type = BPF_MAP_TYPE_STACK_TRACE,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct bpf_stack_build_id)
-               * PERF_MAX_STACK_DEPTH,
        .max_entries = 128,
        .map_flags = BPF_F_STACK_BUILD_ID,
+       .key_size = sizeof(__u32),
+       .value_size = sizeof(stack_trace_t),
 };
 
-struct bpf_map_def SEC("maps") stack_amap = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       /* there seems to be a bug in kernel not handling typedef properly */
+       struct bpf_stack_build_id (*value)[PERF_MAX_STACK_DEPTH];
+} stack_amap SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct bpf_stack_build_id)
-               * PERF_MAX_STACK_DEPTH,
        .max_entries = 128,
 };
 

diff --git a/tools/testing/selftests/bpf/progs/test_stacktrace_map.c b/tools/testing/selftests/bpf/progs/test_stacktrace_map.c
index af111af..7ad09ad 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_stacktrace_map.c
+++ b/tools/testing/selftests/bpf/progs/test_stacktrace_map.c
@@ -8,31 +8,47 @@
 #define PERF_MAX_STACK_DEPTH         127
 #endif
 
-struct bpf_map_def SEC("maps") control_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u32 *value;
+} control_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(__u32),
        .max_entries = 1,
 };
 
-struct bpf_map_def SEC("maps") stackid_hmap = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u32 *value;
+} stackid_hmap SEC(".maps") = {
        .type = BPF_MAP_TYPE_HASH,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(__u32),
        .max_entries = 16384,
 };
 
-struct bpf_map_def SEC("maps") stackmap = {
+typedef __u64 stack_trace_t[PERF_MAX_STACK_DEPTH];
+
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 key_size;
+       __u32 value_size;
+} stackmap SEC(".maps") = {
        .type = BPF_MAP_TYPE_STACK_TRACE,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(__u64) * PERF_MAX_STACK_DEPTH,
        .max_entries = 16384,
+       .key_size = sizeof(__u32),
+       .value_size = sizeof(stack_trace_t),
 };
 
-struct bpf_map_def SEC("maps") stack_amap = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u64 (*value)[PERF_MAX_STACK_DEPTH];
+} stack_amap SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(__u64) * PERF_MAX_STACK_DEPTH,
        .max_entries = 16384,
 };
 

diff --git a/tools/testing/selftests/bpf/progs/test_tcp_estats.c b/tools/testing/selftests/bpf/progs/test_tcp_estats.c
index bee3bbe..df98f7e 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_tcp_estats.c
+++ b/tools/testing/selftests/bpf/progs/test_tcp_estats.c
@@ -148,10 +148,13 @@ struct tcp_estats_basic_event {
        struct tcp_estats_conn_id conn_id;
 };
 
-struct bpf_map_def SEC("maps") ev_record_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct tcp_estats_basic_event *value;
+} ev_record_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_HASH,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct tcp_estats_basic_event),
        .max_entries = 1024,
 };
 

diff --git a/tools/testing/selftests/bpf/progs/test_tcpbpf_kern.c b/tools/testing/selftests/bpf/progs/test_tcpbpf_kern.c
index c7c3240..38e10c9 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_tcpbpf_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tcpbpf_kern.c
@@ -14,17 +14,23 @@
 #include "bpf_endian.h"
 #include "test_tcpbpf.h"
 
-struct bpf_map_def SEC("maps") global_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct tcpbpf_globals *value;
+} global_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct tcpbpf_globals),
        .max_entries = 4,
 };
 
-struct bpf_map_def SEC("maps") sockopt_results = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       int *value;
+} sockopt_results SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(int),
        .max_entries = 2,
 };
 

diff --git a/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c b/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c
index ec6db6e..d073d37 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c
+++ b/tools/testing/selftests/bpf/progs/test_tcpnotify_kern.c
@@ -14,18 +14,26 @@
 #include "bpf_endian.h"
 #include "test_tcpnotify.h"
 
-struct bpf_map_def SEC("maps") global_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct tcpnotify_globals *value;
+} global_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct tcpnotify_globals),
        .max_entries = 4,
 };
 
-struct bpf_map_def SEC("maps") perf_event_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 key_size;
+       __u32 value_size;
+} perf_event_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_PERF_EVENT_ARRAY,
+       .max_entries = 2,
        .key_size = sizeof(int),
        .value_size = sizeof(__u32),
-       .max_entries = 2,
 };
 
 int _version SEC("version") = 1;

diff --git a/tools/testing/selftests/bpf/progs/test_xdp.c b/tools/testing/selftests/bpf/progs/test_xdp.c
index 5e7df8b..ec3d2c1 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_xdp.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp.c
@@ -22,17 +22,23 @@
 
 int _version SEC("version") = 1;
 
-struct bpf_map_def SEC("maps") rxcnt = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u64 *value;
+} rxcnt SEC(".maps") = {
        .type = BPF_MAP_TYPE_PERCPU_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(__u64),
        .max_entries = 256,
 };
 
-struct bpf_map_def SEC("maps") vip2tnl = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       struct vip *key;
+       struct iptnl_info *value;
+} vip2tnl SEC(".maps") = {
        .type = BPF_MAP_TYPE_HASH,
-       .key_size = sizeof(struct vip),
-       .value_size = sizeof(struct iptnl_info),
        .max_entries = MAX_IPTNL_ENTRIES,
 };
 

diff --git a/tools/testing/selftests/bpf/progs/test_xdp_noinline.c b/tools/testing/selftests/bpf/progs/test_xdp_noinline.c
index 4fe6aaa..d2eddb5 100644 (file)
--- a/tools/testing/selftests/bpf/progs/test_xdp_noinline.c
+++ b/tools/testing/selftests/bpf/progs/test_xdp_noinline.c
@@ -163,52 +163,66 @@ struct lb_stats {
        __u64 v1;
 };
 
-struct bpf_map_def __attribute__ ((section("maps"), used)) vip_map = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       struct vip_definition *key;
+       struct vip_meta *value;
+} vip_map SEC(".maps") = {
        .type = BPF_MAP_TYPE_HASH,
-       .key_size = sizeof(struct vip_definition),
-       .value_size = sizeof(struct vip_meta),
        .max_entries = 512,
-       .map_flags = 0,
 };
 
-struct bpf_map_def __attribute__ ((section("maps"), used)) lru_cache = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 map_flags;
+       struct flow_key *key;
+       struct real_pos_lru *value;
+} lru_cache SEC(".maps") = {
        .type = BPF_MAP_TYPE_LRU_HASH,
-       .key_size = sizeof(struct flow_key),
-       .value_size = sizeof(struct real_pos_lru),
        .max_entries = 300,
        .map_flags = 1U << 1,
 };
 
-struct bpf_map_def __attribute__ ((section("maps"), used)) ch_rings = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       __u32 *value;
+} ch_rings SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(__u32),
        .max_entries = 12 * 655,
-       .map_flags = 0,
 };
 
-struct bpf_map_def __attribute__ ((section("maps"), used)) reals = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct real_definition *value;
+} reals SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct real_definition),
        .max_entries = 40,
-       .map_flags = 0,
 };
 
-struct bpf_map_def __attribute__ ((section("maps"), used)) stats = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct lb_stats *value;
+} stats SEC(".maps") = {
        .type = BPF_MAP_TYPE_PERCPU_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct lb_stats),
        .max_entries = 515,
-       .map_flags = 0,
 };
 
-struct bpf_map_def __attribute__ ((section("maps"), used)) ctl_array = {
+struct {
+       __u32 type;
+       __u32 max_entries;
+       __u32 *key;
+       struct ctl_value *value;
+} ctl_array SEC(".maps") = {
        .type = BPF_MAP_TYPE_ARRAY,
-       .key_size = sizeof(__u32),
-       .value_size = sizeof(struct ctl_value),
        .max_entries = 16,
-       .map_flags = 0,
 };
 
 struct eth_hdr {