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-rw-r--r--include/linux/bpf.h22
-rw-r--r--include/linux/filter.h2
2 files changed, 23 insertions, 1 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index d5cda067115a..8821b9a8689e 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -126,6 +126,27 @@ struct bpf_prog_aux {
struct work_struct work;
};
+struct bpf_array {
+ struct bpf_map map;
+ u32 elem_size;
+ /* 'ownership' of prog_array is claimed by the first program that
+ * is going to use this map or by the first program which FD is stored
+ * in the map to make sure that all callers and callees have the same
+ * prog_type and JITed flag
+ */
+ enum bpf_prog_type owner_prog_type;
+ bool owner_jited;
+ union {
+ char value[0] __aligned(8);
+ struct bpf_prog *prog[0] __aligned(8);
+ };
+};
+#define MAX_TAIL_CALL_CNT 32
+
+u64 bpf_tail_call(u64 ctx, u64 r2, u64 index, u64 r4, u64 r5);
+void bpf_prog_array_map_clear(struct bpf_map *map);
+bool bpf_prog_array_compatible(struct bpf_array *array, const struct bpf_prog *fp);
+
#ifdef CONFIG_BPF_SYSCALL
void bpf_register_prog_type(struct bpf_prog_type_list *tl);
void bpf_register_map_type(struct bpf_map_type_list *tl);
@@ -160,5 +181,6 @@ extern const struct bpf_func_proto bpf_map_delete_elem_proto;
extern const struct bpf_func_proto bpf_get_prandom_u32_proto;
extern const struct bpf_func_proto bpf_get_smp_processor_id_proto;
+extern const struct bpf_func_proto bpf_tail_call_proto;
#endif /* _LINUX_BPF_H */
diff --git a/include/linux/filter.h b/include/linux/filter.h
index 200be4a74a33..17724f6ea983 100644
--- a/include/linux/filter.h
+++ b/include/linux/filter.h
@@ -378,7 +378,7 @@ static inline void bpf_prog_unlock_ro(struct bpf_prog *fp)
int sk_filter(struct sock *sk, struct sk_buff *skb);
-void bpf_prog_select_runtime(struct bpf_prog *fp);
+int bpf_prog_select_runtime(struct bpf_prog *fp);
void bpf_prog_free(struct bpf_prog *fp);
struct bpf_prog *bpf_prog_alloc(unsigned int size, gfp_t gfp_extra_flags);