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author | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-07-19 12:40:22 -0400 |
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committer | Steven Rostedt (VMware) <rostedt@goodmis.org> | 2019-07-19 12:40:22 -0400 |
commit | ca79234af3a9e6d942763a58956b337e69bf1340 (patch) | |
tree | e3b923f28f8e1282a16a0b55d7dce7e2b0a9fa44 /drivers/misc/vmw_vmci/vmci_handle_array.h | |
parent | 858848641fbecd42437e36adc9291b0ce5db379e (diff) | |
parent | 3bd837bfe431839a378e9d421af05b2e22a6d329 (diff) |
Merge tag 'v4.19.59' into v4.19-rt
This is the 4.19.59 stable release
Diffstat (limited to 'drivers/misc/vmw_vmci/vmci_handle_array.h')
-rw-r--r-- | drivers/misc/vmw_vmci/vmci_handle_array.h | 29 |
1 files changed, 19 insertions, 10 deletions
diff --git a/drivers/misc/vmw_vmci/vmci_handle_array.h b/drivers/misc/vmw_vmci/vmci_handle_array.h index b5f3a7f98cf1..0fc58597820e 100644 --- a/drivers/misc/vmw_vmci/vmci_handle_array.h +++ b/drivers/misc/vmw_vmci/vmci_handle_array.h @@ -17,32 +17,41 @@ #define _VMCI_HANDLE_ARRAY_H_ #include <linux/vmw_vmci_defs.h> +#include <linux/limits.h> #include <linux/types.h> -#define VMCI_HANDLE_ARRAY_DEFAULT_SIZE 4 -#define VMCI_ARR_CAP_MULT 2 /* Array capacity multiplier */ - struct vmci_handle_arr { - size_t capacity; - size_t size; + u32 capacity; + u32 max_capacity; + u32 size; + u32 pad; struct vmci_handle entries[]; }; -struct vmci_handle_arr *vmci_handle_arr_create(size_t capacity); +#define VMCI_HANDLE_ARRAY_HEADER_SIZE \ + offsetof(struct vmci_handle_arr, entries) +/* Select a default capacity that results in a 64 byte sized array */ +#define VMCI_HANDLE_ARRAY_DEFAULT_CAPACITY 6 +/* Make sure that the max array size can be expressed by a u32 */ +#define VMCI_HANDLE_ARRAY_MAX_CAPACITY \ + ((U32_MAX - VMCI_HANDLE_ARRAY_HEADER_SIZE - 1) / \ + sizeof(struct vmci_handle)) + +struct vmci_handle_arr *vmci_handle_arr_create(u32 capacity, u32 max_capacity); void vmci_handle_arr_destroy(struct vmci_handle_arr *array); -void vmci_handle_arr_append_entry(struct vmci_handle_arr **array_ptr, - struct vmci_handle handle); +int vmci_handle_arr_append_entry(struct vmci_handle_arr **array_ptr, + struct vmci_handle handle); struct vmci_handle vmci_handle_arr_remove_entry(struct vmci_handle_arr *array, struct vmci_handle entry_handle); struct vmci_handle vmci_handle_arr_remove_tail(struct vmci_handle_arr *array); struct vmci_handle -vmci_handle_arr_get_entry(const struct vmci_handle_arr *array, size_t index); +vmci_handle_arr_get_entry(const struct vmci_handle_arr *array, u32 index); bool vmci_handle_arr_has_entry(const struct vmci_handle_arr *array, struct vmci_handle entry_handle); struct vmci_handle *vmci_handle_arr_get_handles(struct vmci_handle_arr *array); -static inline size_t vmci_handle_arr_get_size( +static inline u32 vmci_handle_arr_get_size( const struct vmci_handle_arr *array) { return array->size; |