5 files changed, 54 insertions, 1 deletions

diff --git a/include/linux/bpf-cgroup-defs.h b/include/linux/bpf-cgroup-defs.h
index 5d268e76d8e6..b99f8c3e37ea 100644
--- a/include/linux/bpf-cgroup-defs.h
+++ b/include/linux/bpf-cgroup-defs.h
@@ -10,6 +10,12 @@
 
 struct bpf_prog_array;
 
+#ifdef CONFIG_BPF_LSM
+#define CGROUP_LSM_NUM 211 /* will be addressed in the next patch */
+#else
+#define CGROUP_LSM_NUM 0
+#endif
+
 enum cgroup_bpf_attach_type {
 	CGROUP_BPF_ATTACH_TYPE_INVALID = -1,
 	CGROUP_INET_INGRESS = 0,
@@ -35,6 +41,8 @@ enum cgroup_bpf_attach_type {
 	CGROUP_INET4_GETSOCKNAME,
 	CGROUP_INET6_GETSOCKNAME,
 	CGROUP_INET_SOCK_RELEASE,
+	CGROUP_LSM_START,
+	CGROUP_LSM_END = CGROUP_LSM_START + CGROUP_LSM_NUM - 1,
 	MAX_CGROUP_BPF_ATTACH_TYPE
 };
 
diff --git a/include/linux/bpf-cgroup.h b/include/linux/bpf-cgroup.h
index 6673acfbf2ef..2bd1b5f8de9b 100644
--- a/include/linux/bpf-cgroup.h
+++ b/include/linux/bpf-cgroup.h
@@ -23,6 +23,13 @@ struct ctl_table;
 struct ctl_table_header;
 struct task_struct;
 
+unsigned int __cgroup_bpf_run_lsm_sock(const void *ctx,
+				       const struct bpf_insn *insn);
+unsigned int __cgroup_bpf_run_lsm_socket(const void *ctx,
+					 const struct bpf_insn *insn);
+unsigned int __cgroup_bpf_run_lsm_current(const void *ctx,
+					  const struct bpf_insn *insn);
+
 #ifdef CONFIG_CGROUP_BPF
 
 #define CGROUP_ATYPE(type) \
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index d547be9db75f..77cd613a00bd 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -794,6 +794,10 @@ void notrace __bpf_prog_exit(struct bpf_prog *prog, u64 start, struct bpf_tramp_
 u64 notrace __bpf_prog_enter_sleepable(struct bpf_prog *prog, struct bpf_tramp_run_ctx *run_ctx);
 void notrace __bpf_prog_exit_sleepable(struct bpf_prog *prog, u64 start,
 				       struct bpf_tramp_run_ctx *run_ctx);
+u64 notrace __bpf_prog_enter_lsm_cgroup(struct bpf_prog *prog,
+					struct bpf_tramp_run_ctx *run_ctx);
+void notrace __bpf_prog_exit_lsm_cgroup(struct bpf_prog *prog, u64 start,
+					struct bpf_tramp_run_ctx *run_ctx);
 void notrace __bpf_tramp_enter(struct bpf_tramp_image *tr);
 void notrace __bpf_tramp_exit(struct bpf_tramp_image *tr);
 
@@ -1060,6 +1064,7 @@ struct bpf_prog_aux {
 	struct user_struct *user;
 	u64 load_time; /* ns since boottime */
 	u32 verified_insns;
+	int cgroup_atype; /* enum cgroup_bpf_attach_type */
 	struct bpf_map *cgroup_storage[MAX_BPF_CGROUP_STORAGE_TYPE];
 	char name[BPF_OBJ_NAME_LEN];
 #ifdef CONFIG_SECURITY
@@ -1167,6 +1172,11 @@ struct bpf_tramp_link {
 	u64 cookie;
 };
 
+struct bpf_shim_tramp_link {
+	struct bpf_tramp_link link;
+	struct bpf_trampoline *trampoline;
+};
+
 struct bpf_tracing_link {
 	struct bpf_tramp_link link;
 	enum bpf_attach_type attach_type;
@@ -1245,6 +1255,9 @@ struct bpf_dummy_ops {
 int bpf_struct_ops_test_run(struct bpf_prog *prog, const union bpf_attr *kattr,
 			    union bpf_attr __user *uattr);
 #endif
+int bpf_trampoline_link_cgroup_shim(struct bpf_prog *prog,
+				    int cgroup_atype);
+void bpf_trampoline_unlink_cgroup_shim(struct bpf_prog *prog);
 #else
 static inline const struct bpf_struct_ops *bpf_struct_ops_find(u32 type_id)
 {
@@ -1268,6 +1281,14 @@ static inline int bpf_struct_ops_map_sys_lookup_elem(struct bpf_map *map,
 {
 	return -EINVAL;
 }
+static inline int bpf_trampoline_link_cgroup_shim(struct bpf_prog *prog,
+						  int cgroup_atype)
+{
+	return -EOPNOTSUPP;
+}
+static inline void bpf_trampoline_unlink_cgroup_shim(struct bpf_prog *prog)
+{
+}
 #endif
 
 struct bpf_array {
@@ -2368,6 +2389,8 @@ extern const struct bpf_func_proto bpf_sk_getsockopt_proto;
 extern const struct bpf_func_proto bpf_find_vma_proto;
 extern const struct bpf_func_proto bpf_loop_proto;
 extern const struct bpf_func_proto bpf_copy_from_user_task_proto;
+extern const struct bpf_func_proto bpf_set_retval_proto;
+extern const struct bpf_func_proto bpf_get_retval_proto;
 
 const struct bpf_func_proto *tracing_prog_func_proto(
   enum bpf_func_id func_id, const struct bpf_prog *prog);
@@ -2485,6 +2508,7 @@ int bpf_arch_text_invalidate(void *dst, size_t len);
 
 struct btf_id_set;
 bool btf_id_set_contains(const struct btf_id_set *set, u32 id);
+int btf_id_set_index(const struct btf_id_set *set, u32 id);
 
 #define MAX_BPRINTF_VARARGS		12
 
diff --git a/include/linux/bpf_lsm.h b/include/linux/bpf_lsm.h
index 479c101546ad..61787a5f6af9 100644
--- a/include/linux/bpf_lsm.h
+++ b/include/linux/bpf_lsm.h
@@ -42,6 +42,9 @@ extern const struct bpf_func_proto bpf_inode_storage_get_proto;
 extern const struct bpf_func_proto bpf_inode_storage_delete_proto;
 void bpf_inode_storage_free(struct inode *inode);
 
+int bpf_lsm_hook_idx(u32 btf_id);
+void bpf_lsm_find_cgroup_shim(const struct bpf_prog *prog, bpf_func_t *bpf_func);
+
 #else /* !CONFIG_BPF_LSM */
 
 static inline bool bpf_lsm_is_sleepable_hook(u32 btf_id)
@@ -65,6 +68,16 @@ static inline void bpf_inode_storage_free(struct inode *inode)
 {
 }
 
+static inline void bpf_lsm_find_cgroup_shim(const struct bpf_prog *prog,
+					   bpf_func_t *bpf_func)
+{
+}
+
+static inline int bpf_lsm_hook_idx(u32 btf_id)
+{
+	return -EINVAL;
+}
+
 #endif /* CONFIG_BPF_LSM */
 
 #endif /* _LINUX_BPF_LSM_H */
diff --git a/include/linux/btf_ids.h b/include/linux/btf_ids.h
index 335a19092368..252a4befeab1 100644
--- a/include/linux/btf_ids.h
+++ b/include/linux/btf_ids.h
@@ -179,7 +179,8 @@ extern struct btf_id_set name;
 	BTF_SOCK_TYPE(BTF_SOCK_TYPE_UDP, udp_sock)			\
 	BTF_SOCK_TYPE(BTF_SOCK_TYPE_UDP6, udp6_sock)			\
 	BTF_SOCK_TYPE(BTF_SOCK_TYPE_UNIX, unix_sock)			\
-	BTF_SOCK_TYPE(BTF_SOCK_TYPE_MPTCP, mptcp_sock)
+	BTF_SOCK_TYPE(BTF_SOCK_TYPE_MPTCP, mptcp_sock)			\
+	BTF_SOCK_TYPE(BTF_SOCK_TYPE_SOCKET, socket)
 
 enum {
 #define BTF_SOCK_TYPE(name, str) name,