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Diffstat (limited to 'include/linux/bpf.h')
-rw-r--r--include/linux/bpf.h123
1 files changed, 100 insertions, 23 deletions
diff --git a/include/linux/bpf.h b/include/linux/bpf.h
index f3f50e29d639..bcae876a2a60 100644
--- a/include/linux/bpf.h
+++ b/include/linux/bpf.h
@@ -30,6 +30,7 @@
#include <linux/static_call.h>
#include <linux/memcontrol.h>
#include <linux/cfi.h>
+#include <asm/rqspinlock.h>
struct bpf_verifier_env;
struct bpf_verifier_log;
@@ -204,8 +205,23 @@ enum btf_field_type {
BPF_REFCOUNT = (1 << 9),
BPF_WORKQUEUE = (1 << 10),
BPF_UPTR = (1 << 11),
+ BPF_RES_SPIN_LOCK = (1 << 12),
};
+enum bpf_cgroup_storage_type {
+ BPF_CGROUP_STORAGE_SHARED,
+ BPF_CGROUP_STORAGE_PERCPU,
+ __BPF_CGROUP_STORAGE_MAX
+#define MAX_BPF_CGROUP_STORAGE_TYPE __BPF_CGROUP_STORAGE_MAX
+};
+
+#ifdef CONFIG_CGROUP_BPF
+# define for_each_cgroup_storage_type(stype) \
+ for (stype = 0; stype < MAX_BPF_CGROUP_STORAGE_TYPE; stype++)
+#else
+# define for_each_cgroup_storage_type(stype) for (; false; )
+#endif /* CONFIG_CGROUP_BPF */
+
typedef void (*btf_dtor_kfunc_t)(void *);
struct btf_field_kptr {
@@ -239,6 +255,7 @@ struct btf_record {
u32 cnt;
u32 field_mask;
int spin_lock_off;
+ int res_spin_lock_off;
int timer_off;
int wq_off;
int refcount_off;
@@ -257,6 +274,19 @@ struct bpf_list_node_kern {
void *owner;
} __attribute__((aligned(8)));
+/* 'Ownership' of program-containing map 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, JITed flag and xdp_has_frags flag.
+ */
+struct bpf_map_owner {
+ enum bpf_prog_type type;
+ bool jited;
+ bool xdp_has_frags;
+ u64 storage_cookie[MAX_BPF_CGROUP_STORAGE_TYPE];
+ const struct btf_type *attach_func_proto;
+};
+
struct bpf_map {
const struct bpf_map_ops *ops;
struct bpf_map *inner_map_meta;
@@ -289,24 +319,15 @@ struct bpf_map {
struct rcu_head rcu;
};
atomic64_t writecnt;
- /* 'Ownership' of program-containing map 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, JITed flag and xdp_has_frags flag.
- */
- struct {
- const struct btf_type *attach_func_proto;
- spinlock_t lock;
- enum bpf_prog_type type;
- bool jited;
- bool xdp_has_frags;
- } owner;
+ spinlock_t owner_lock;
+ struct bpf_map_owner *owner;
bool bypass_spec_v1;
bool frozen; /* write-once; write-protected by freeze_mutex */
bool free_after_mult_rcu_gp;
bool free_after_rcu_gp;
atomic64_t sleepable_refcnt;
s64 __percpu *elem_count;
+ u64 cookie; /* write-once */
};
static inline const char *btf_field_type_name(enum btf_field_type type)
@@ -314,6 +335,8 @@ static inline const char *btf_field_type_name(enum btf_field_type type)
switch (type) {
case BPF_SPIN_LOCK:
return "bpf_spin_lock";
+ case BPF_RES_SPIN_LOCK:
+ return "bpf_res_spin_lock";
case BPF_TIMER:
return "bpf_timer";
case BPF_WORKQUEUE:
@@ -341,11 +364,19 @@ static inline const char *btf_field_type_name(enum btf_field_type type)
}
}
+#if IS_ENABLED(CONFIG_DEBUG_KERNEL)
+#define BPF_WARN_ONCE(cond, format...) WARN_ONCE(cond, format)
+#else
+#define BPF_WARN_ONCE(cond, format...) BUILD_BUG_ON_INVALID(cond)
+#endif
+
static inline u32 btf_field_type_size(enum btf_field_type type)
{
switch (type) {
case BPF_SPIN_LOCK:
return sizeof(struct bpf_spin_lock);
+ case BPF_RES_SPIN_LOCK:
+ return sizeof(struct bpf_res_spin_lock);
case BPF_TIMER:
return sizeof(struct bpf_timer);
case BPF_WORKQUEUE:
@@ -376,6 +407,8 @@ static inline u32 btf_field_type_align(enum btf_field_type type)
switch (type) {
case BPF_SPIN_LOCK:
return __alignof__(struct bpf_spin_lock);
+ case BPF_RES_SPIN_LOCK:
+ return __alignof__(struct bpf_res_spin_lock);
case BPF_TIMER:
return __alignof__(struct bpf_timer);
case BPF_WORKQUEUE:
@@ -419,6 +452,7 @@ static inline void bpf_obj_init_field(const struct btf_field *field, void *addr)
case BPF_RB_ROOT:
/* RB_ROOT_CACHED 0-inits, no need to do anything after memset */
case BPF_SPIN_LOCK:
+ case BPF_RES_SPIN_LOCK:
case BPF_TIMER:
case BPF_WORKQUEUE:
case BPF_KPTR_UNREF:
@@ -968,6 +1002,7 @@ struct bpf_insn_access_aux {
struct {
struct btf *btf;
u32 btf_id;
+ u32 ref_obj_id;
};
};
struct bpf_verifier_log *log; /* for verbose logs */
@@ -990,6 +1025,21 @@ static inline bool bpf_pseudo_func(const struct bpf_insn *insn)
return bpf_is_ldimm64(insn) && insn->src_reg == BPF_PSEUDO_FUNC;
}
+/* Given a BPF_ATOMIC instruction @atomic_insn, return true if it is an
+ * atomic load or store, and false if it is a read-modify-write instruction.
+ */
+static inline bool
+bpf_atomic_is_load_store(const struct bpf_insn *atomic_insn)
+{
+ switch (atomic_insn->imm) {
+ case BPF_LOAD_ACQ:
+ case BPF_STORE_REL:
+ return true;
+ default:
+ return false;
+ }
+}
+
struct bpf_prog_ops {
int (*test_run)(struct bpf_prog *prog, const union bpf_attr *kattr,
union bpf_attr __user *uattr);
@@ -1050,14 +1100,6 @@ struct bpf_prog_offload {
u32 jited_len;
};
-enum bpf_cgroup_storage_type {
- BPF_CGROUP_STORAGE_SHARED,
- BPF_CGROUP_STORAGE_PERCPU,
- __BPF_CGROUP_STORAGE_MAX
-};
-
-#define MAX_BPF_CGROUP_STORAGE_TYPE __BPF_CGROUP_STORAGE_MAX
-
/* The longest tracepoint has 12 args.
* See include/trace/bpf_probe.h
*/
@@ -1323,6 +1365,20 @@ u32 __bpf_dynptr_size(const struct bpf_dynptr_kern *ptr);
const void *__bpf_dynptr_data(const struct bpf_dynptr_kern *ptr, u32 len);
void *__bpf_dynptr_data_rw(const struct bpf_dynptr_kern *ptr, u32 len);
bool __bpf_dynptr_is_rdonly(const struct bpf_dynptr_kern *ptr);
+int __bpf_dynptr_write(const struct bpf_dynptr_kern *dst, u32 offset,
+ void *src, u32 len, u64 flags);
+void *bpf_dynptr_slice_rdwr(const struct bpf_dynptr *p, u32 offset,
+ void *buffer__opt, u32 buffer__szk);
+
+static inline int bpf_dynptr_check_off_len(const struct bpf_dynptr_kern *ptr, u32 offset, u32 len)
+{
+ u32 size = __bpf_dynptr_size(ptr);
+
+ if (len > size || offset > size - len)
+ return -E2BIG;
+
+ return 0;
+}
#ifdef CONFIG_BPF_JIT
int bpf_trampoline_link_prog(struct bpf_tramp_link *link,
@@ -1481,6 +1537,8 @@ struct bpf_ctx_arg_aux {
enum bpf_reg_type reg_type;
struct btf *btf;
u32 btf_id;
+ u32 ref_obj_id;
+ bool refcounted;
};
struct btf_mod_pair {
@@ -1503,11 +1561,12 @@ struct bpf_prog_aux {
u32 real_func_cnt; /* includes hidden progs, only used for JIT and freeing progs */
u32 func_idx; /* 0 for non-func prog, the index in func array for func prog */
u32 attach_btf_id; /* in-kernel BTF type id to attach to */
+ u32 attach_st_ops_member_off;
u32 ctx_arg_info_size;
u32 max_rdonly_access;
u32 max_rdwr_access;
struct btf *attach_btf;
- const struct bpf_ctx_arg_aux *ctx_arg_info;
+ struct bpf_ctx_arg_aux *ctx_arg_info;
void __percpu *priv_stack_ptr;
struct mutex dst_mutex; /* protects dst_* pointers below, *after* prog becomes visible */
struct bpf_prog *dst_prog;
@@ -1528,6 +1587,7 @@ struct bpf_prog_aux {
bool jits_use_priv_stack;
bool priv_stack_requested;
bool changes_pkt_data;
+ bool might_sleep;
u64 prog_array_member_cnt; /* counts how many times as member of prog_array */
struct mutex ext_mutex; /* mutex for is_extended and prog_array_member_cnt */
struct bpf_arena *arena;
@@ -1547,6 +1607,7 @@ struct bpf_prog_aux {
#endif
struct bpf_ksym ksym;
const struct bpf_prog_ops *ops;
+ const struct bpf_struct_ops *st_ops;
struct bpf_map **used_maps;
struct mutex used_maps_mutex; /* mutex for used_maps and used_map_cnt */
struct btf_mod_pair *used_btfs;
@@ -1945,6 +2006,9 @@ static inline void bpf_struct_ops_desc_release(struct bpf_struct_ops_desc *st_op
#endif
+int bpf_prog_ctx_arg_info_init(struct bpf_prog *prog,
+ const struct bpf_ctx_arg_aux *info, u32 cnt);
+
#if defined(CONFIG_CGROUP_BPF) && defined(CONFIG_BPF_LSM)
int bpf_trampoline_link_cgroup_shim(struct bpf_prog *prog,
int cgroup_atype);
@@ -1980,6 +2044,7 @@ struct bpf_array {
*/
enum {
BPF_MAX_LOOPS = 8 * 1024 * 1024,
+ BPF_MAX_TIMED_LOOPS = 0xffff,
};
#define BPF_F_ACCESS_MASK (BPF_F_RDONLY | \
@@ -2016,6 +2081,16 @@ static inline bool bpf_map_flags_access_ok(u32 access_flags)
(BPF_F_RDONLY_PROG | BPF_F_WRONLY_PROG);
}
+static inline struct bpf_map_owner *bpf_map_owner_alloc(struct bpf_map *map)
+{
+ return kzalloc(sizeof(*map->owner), GFP_ATOMIC);
+}
+
+static inline void bpf_map_owner_free(struct bpf_map *map)
+{
+ kfree(map->owner);
+}
+
struct bpf_event_entry {
struct perf_event *event;
struct file *perf_file;
@@ -2036,6 +2111,8 @@ int bpf_prog_calc_tag(struct bpf_prog *fp);
const struct bpf_func_proto *bpf_get_trace_printk_proto(void);
const struct bpf_func_proto *bpf_get_trace_vprintk_proto(void);
+const struct bpf_func_proto *bpf_get_perf_event_read_value_proto(void);
+
typedef unsigned long (*bpf_ctx_copy_t)(void *dst, const void *src,
unsigned long off, unsigned long len);
typedef u32 (*bpf_convert_ctx_access_t)(enum bpf_access_type type,
@@ -2348,7 +2425,7 @@ int generic_map_delete_batch(struct bpf_map *map,
struct bpf_map *bpf_map_get_curr_or_next(u32 *id);
struct bpf_prog *bpf_prog_get_curr_or_next(u32 *id);
-int bpf_map_alloc_pages(const struct bpf_map *map, gfp_t gfp, int nid,
+int bpf_map_alloc_pages(const struct bpf_map *map, int nid,
unsigned long nr_pages, struct page **page_array);
#ifdef CONFIG_MEMCG
void *bpf_map_kmalloc_node(const struct bpf_map *map, size_t size, gfp_t flags,
@@ -2546,7 +2623,7 @@ struct bpf_iter__bpf_map_elem {
int bpf_iter_reg_target(const struct bpf_iter_reg *reg_info);
void bpf_iter_unreg_target(const struct bpf_iter_reg *reg_info);
-bool bpf_iter_prog_supported(struct bpf_prog *prog);
+int bpf_iter_prog_supported(struct bpf_prog *prog);
const struct bpf_func_proto *
bpf_iter_get_func_proto(enum bpf_func_id func_id, const struct bpf_prog *prog);
int bpf_iter_link_attach(const union bpf_attr *attr, bpfptr_t uattr, struct bpf_prog *prog);
generated by cgit v1.2.3 (git 2.39.0) at 2025-08-21 10:53:17 +0300