Merge pull request kmesh-net#1015 from LiZhenCheng9527/constant-map

Use bpf map to pass node IP and pod sub gateway. Skip kubelet probe traffic management from ebpf

Author: kmesh-bot

bpf/include/bpf_log.h

@@ -90,11 +90,11 @@ lower than 22.09, compile would report an error of bpf_snprintf dont exist */
 static inline int map_lookup_log_level()
 {
     int zero = 0;
-    int *value = NULL;
+    struct kmesh_config *value = {0};
     value = kmesh_map_lookup_elem(&kmesh_config_map, &zero);
     if (!value)
         return BPF_LOG_INFO;
-    return *value;
+    return value->bpf_log_level;
 }
 
 #define BPF_LOG(l, t, f, ...)                                                                                          \

bpf/include/common.h

@@ -63,6 +63,12 @@ struct kmesh_context {
     bool via_waypoint;
 };
 
+struct kmesh_config {
+    __u32 bpf_log_level;
+    __u32 node_ip[4];
+    __u32 pod_gateway[4];
+};
+
 static inline void *kmesh_map_lookup_elem(void *map, const void *key)
 {
     return bpf_map_lookup_elem(map, key);
@@ -134,8 +140,8 @@ struct {
 struct {
     __uint(type, BPF_MAP_TYPE_ARRAY);
     __uint(max_entries, 1);
-    __uint(key_size, sizeof(__u32));
-    __uint(value_size, sizeof(__u32));
+    __type(key, int);
+    __type(value, struct kmesh_config);
 } kmesh_config_map SEC(".maps");
 
 #if KERNEL_VERSION_HIGHER_5_13_0