static int (*bpf_tcp_check_syncookie)(struct bpf_sock *sk,
void *ip, int ip_len, void *tcp, int tcp_len) =
(void *) BPF_FUNC_tcp_check_syncookie;
+static int (*bpf_sysctl_get_name)(void *ctx, char *buf,
+ unsigned long long buf_len,
+ unsigned long long flags) =
+ (void *) BPF_FUNC_sysctl_get_name;
+static int (*bpf_sysctl_get_current_value)(void *ctx, char *buf,
+ unsigned long long buf_len) =
+ (void *) BPF_FUNC_sysctl_get_current_value;
+static int (*bpf_sysctl_get_new_value)(void *ctx, char *buf,
+ unsigned long long buf_len) =
+ (void *) BPF_FUNC_sysctl_get_new_value;
+static int (*bpf_sysctl_set_new_value)(void *ctx, const char *buf,
+ unsigned long long buf_len) =
+ (void *) BPF_FUNC_sysctl_set_new_value;
+static int (*bpf_strtol)(const char *buf, unsigned long long buf_len,
+ unsigned long long flags, long *res) =
+ (void *) BPF_FUNC_strtol;
+static int (*bpf_strtoul)(const char *buf, unsigned long long buf_len,
+ unsigned long long flags, unsigned long *res) =
+ (void *) BPF_FUNC_strtoul;
/* llvm builtin functions that eBPF C program may use to
* emit BPF_LD_ABS and BPF_LD_IND instructions