return ptr->size & DYNPTR_SIZE_MASK;
}
+static void bpf_dynptr_set_size(struct bpf_dynptr_kern *ptr, u32 new_size)
+{
+ u32 metadata = ptr->size & ~DYNPTR_SIZE_MASK;
+
+ ptr->size = new_size | metadata;
+}
+
int bpf_dynptr_check_size(u32 size)
{
return size > DYNPTR_MAX_SIZE ? -E2BIG : 0;
return bpf_dynptr_slice(ptr, offset, buffer, buffer__szk);
}
+__bpf_kfunc int bpf_dynptr_adjust(struct bpf_dynptr_kern *ptr, u32 start, u32 end)
+{
+ u32 size;
+
+ if (!ptr->data || start > end)
+ return -EINVAL;
+
+ size = bpf_dynptr_get_size(ptr);
+
+ if (start > size || end > size)
+ return -ERANGE;
+
+ ptr->offset += start;
+ bpf_dynptr_set_size(ptr, end - start);
+
+ return 0;
+}
+
__bpf_kfunc void *bpf_cast_to_kern_ctx(void *obj)
{
return obj;
BTF_ID_FLAGS(func, bpf_iter_num_new, KF_ITER_NEW)
BTF_ID_FLAGS(func, bpf_iter_num_next, KF_ITER_NEXT | KF_RET_NULL)
BTF_ID_FLAGS(func, bpf_iter_num_destroy, KF_ITER_DESTROY)
+BTF_ID_FLAGS(func, bpf_dynptr_adjust)
BTF_SET8_END(common_btf_ids)
static const struct btf_kfunc_id_set common_kfunc_set = {