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authorFlorin Coras <fcoras@cisco.com>2019-04-25 12:58:46 -0700
committerDamjan Marion <dmarion@me.com>2019-04-26 10:23:38 +0000
commitb095a3cd221a142f7d2b4897b812b2781de05d29 (patch)
tree87a1cdc9872c91d46c771cd9b224c62a35d6af7d /src/svm/fifo_segment.h
parent403e3ba1507750df463d7179494c14d03864b810 (diff)
svm: fifo segment support for chunk allocation
Change-Id: Ie96706b4d8bcb32d2d5f065bc765f95f4e9369e7 Signed-off-by: Florin Coras <fcoras@cisco.com>
Diffstat (limited to 'src/svm/fifo_segment.h')
-rw-r--r--src/svm/fifo_segment.h33
1 files changed, 26 insertions, 7 deletions
diff --git a/src/svm/fifo_segment.h b/src/svm/fifo_segment.h
index cc0ff3adf3a..6ff538fcc07 100644
--- a/src/svm/fifo_segment.h
+++ b/src/svm/fifo_segment.h
@@ -38,10 +38,11 @@ typedef enum fifo_segment_flags_
typedef struct
{
- svm_fifo_t *fifos; /**< Linked list of active RX fifos */
- svm_fifo_t **free_fifos; /**< Freelists, by fifo size */
- u32 n_active_fifos; /**< Number of active fifos */
- u8 flags; /**< Segment flags */
+ svm_fifo_t *fifos; /**< Linked list of active RX fifos */
+ svm_fifo_t **free_fifos; /**< Freelists by fifo size */
+ svm_fifo_chunk_t **free_chunks; /**< Freelists by chunk size */
+ u32 n_active_fifos; /**< Number of active fifos */
+ u8 flags; /**< Segment flags */
} fifo_segment_header_t;
typedef struct
@@ -82,7 +83,7 @@ void fifo_segment_info (fifo_segment_t * seg, char **address, size_t * size);
/**
* Allocate fifo in fifo segment
*
- * @param fs fifo segment
+ * @param fs fifo segment for fifo
* @param data_bytes size of default fifo chunk in bytes
* @param ftype fifo type @ref fifo_segment_ftype_t
* @return new fifo or 0 if alloc failed
@@ -94,7 +95,7 @@ svm_fifo_t *fifo_segment_alloc_fifo (fifo_segment_t * fs,
/**
* Free fifo allocated in fifo segment
*
- * @param fs fifo segment
+ * @param fs fifo segment for fifo
* @param f fifo to be freed
*/
void fifo_segment_free_fifo (fifo_segment_t * fs, svm_fifo_t * f);
@@ -107,7 +108,7 @@ void fifo_segment_free_fifo (fifo_segment_t * fs, svm_fifo_t * f);
* is hit, the number of fifo pairs requested is updated by subtracting the
* number of fifos that have been successfully allocated.
*
- * @param fs fifo segment
+ * @param fs fifo segment for fifo
* @param rx_fifo_size data size of rx fifos
* @param tx_fifo_size data size of tx fifos
* @param n_fifo_pairs number of pairs requested. Prior to returning, this
@@ -117,10 +118,28 @@ void fifo_segment_preallocate_fifo_pairs (fifo_segment_t * fs,
u32 rx_fifo_size,
u32 tx_fifo_size,
u32 * n_fifo_pairs);
+/**
+ * Grow fifo size by adding an additional chunk of memory
+ *
+ * @param fs fifo segment for fifo
+ * @param f fifo to be grown
+ * @param chunk_size number of bytes to be added to fifo
+ * @return 0 on success or a negative number otherwise
+ */
+int fifo_segment_grow_fifo (fifo_segment_t * fs, svm_fifo_t * f,
+ u32 chunk_size);
u8 fifo_segment_has_fifos (fifo_segment_t * fs);
svm_fifo_t *fifo_segment_get_fifo_list (fifo_segment_t * fs);
u32 fifo_segment_num_fifos (fifo_segment_t * fs);
u32 fifo_segment_num_free_fifos (fifo_segment_t * fs, u32 fifo_size_in_bytes);
+/**
+ * Find number of free chunks of given size
+ *
+ * @param fs fifo segment
+ * @param size chunk size of interest or ~0 if all should be counted
+ * @return number of chunks of given size
+ */
+u32 fifo_segment_num_free_chunks (fifo_segment_t * fs, u32 size);
void fifo_segment_main_init (fifo_segment_main_t * sm, u64 baseva,
u32 timeout_in_seconds);