#include <vnet/vnet.h>
#include <svm/svm_fifo_segment.h>
+#include <svm/message_queue.h>
+#include <vlibmemory/api.h>
+#include <vppinfra/lock.h>
+#include <vppinfra/valloc.h>
typedef struct _segment_manager_properties
{
- /** Session fifo sizes. */
- u32 rx_fifo_size;
- u32 tx_fifo_size;
-
- /** Configured additional segment size */
- u32 add_segment_size;
-
- /** Flag that indicates if additional segments should be created */
- u8 add_segment;
-
+ u32 rx_fifo_size; /**< receive fifo size */
+ u32 tx_fifo_size; /**< transmit fifo size */
+ u32 evt_q_size; /**< event queue length */
+ u32 segment_size; /**< first segment size */
+ u32 prealloc_fifos; /**< preallocated fifo pairs */
+ u32 add_segment_size; /**< additional segment size */
+ u8 add_segment:1; /**< can add new segments flag */
+ u8 use_mq_eventfd:1; /**< use eventfds for mqs flag */
+ u8 reserved:6; /**< reserved flags */
+ ssvm_segment_type_t segment_type; /**< seg type: if set to SSVM_N_TYPES,
+ private segments are used */
} segment_manager_properties_t;
typedef struct _segment_manager
{
- /** segments mapped by this manager */
- u32 *segment_indices;
+ /** Pool of segments allocated by this manager */
+ svm_fifo_segment_private_t *segments;
+
+ /** rwlock that protects the segments pool */
+ clib_rwlock_t segments_rwlock;
+
+ /** Owner app worker index */
+ u32 app_wrk_index;
+
+ /**
+ * First segment should not be deleted unless segment manger is deleted.
+ * This also indicates that the segment manager is the first to have been
+ * allocated for the app.
+ */
+ u8 first_is_protected;
+
+ /**
+ * App event queue allocated in first segment
+ */
+ svm_msg_q_t *event_queue;
+} segment_manager_t;
- /** Owner app index */
- u32 app_index;
+#define segment_manager_foreach_segment_w_lock(VAR, SM, BODY) \
+do { \
+ clib_rwlock_reader_lock (&(SM)->segments_rwlock); \
+ pool_foreach((VAR), ((SM)->segments), (BODY)); \
+ clib_rwlock_reader_unlock (&(SM)->segments_rwlock); \
+} while (0)
- /** Pointer to manager properties. Could be shared among all of
- * an app's segment managers s*/
- segment_manager_properties_t *properties;
-} segment_manager_t;
+typedef struct segment_manager_main_
+{
+ /** Pool of segment managers */
+ segment_manager_t *segment_managers;
-/** Pool of segment managers */
-extern segment_manager_t *segment_managers;
+ /** Virtual address allocator */
+ clib_valloc_main_t va_allocator;
-always_inline segment_manager_t *
-segment_manager_new ()
+} segment_manager_main_t;
+
+extern segment_manager_main_t segment_manager_main;
+
+typedef struct segment_manager_main_init_args_
{
- segment_manager_t *sm;
- pool_get (segment_managers, sm);
- memset (sm, 0, sizeof (*sm));
- return sm;
-}
+ u64 baseva;
+ u64 size;
+} segment_manager_main_init_args_t;
+
+#define SEGMENT_MANAGER_INVALID_APP_INDEX ((u32) ~0)
+
+/** Pool of segment managers */
+extern segment_manager_t *segment_managers;
always_inline segment_manager_t *
segment_manager_get (u32 index)
{
- return pool_elt_at_index (segment_managers, index);
+ return pool_elt_at_index (segment_manager_main.segment_managers, index);
}
always_inline segment_manager_t *
segment_manager_get_if_valid (u32 index)
{
- if (pool_is_free_index (segment_managers, index))
+ if (pool_is_free_index (segment_manager_main.segment_managers, index))
return 0;
- return pool_elt_at_index (segment_managers, index);
+ return pool_elt_at_index (segment_manager_main.segment_managers, index);
}
always_inline u32
segment_manager_index (segment_manager_t * sm)
{
- return sm - segment_managers;
+ return sm - segment_manager_main.segment_managers;
}
-int
-segment_manager_init (segment_manager_t * sm,
- segment_manager_properties_t * properties,
- u32 seg_size);
+always_inline svm_msg_q_t *
+segment_manager_event_queue (segment_manager_t * sm)
+{
+ return sm->event_queue;
+}
+
+always_inline u64
+segment_manager_make_segment_handle (u32 segment_manager_index,
+ u32 segment_index)
+{
+ return (((u64) segment_manager_index << 32) | segment_index);
+}
-void segment_manager_get_segment_info (u32 index, u8 ** name, u32 * size);
-int
-session_manager_add_first_segment (segment_manager_t * sm, u32 segment_size);
-int session_manager_add_segment (segment_manager_t * sm);
+u64 segment_manager_segment_handle (segment_manager_t * sm,
+ svm_fifo_segment_private_t * segment);
+
+segment_manager_t *segment_manager_new ();
+int segment_manager_init (segment_manager_t * sm, u32 first_seg_size,
+ u32 prealloc_fifo_pairs);
+
+svm_fifo_segment_private_t *segment_manager_get_segment (segment_manager_t *,
+ u32 segment_index);
+svm_fifo_segment_private_t *segment_manager_get_segment_w_handle (u64);
+svm_fifo_segment_private_t
+ * segment_manager_get_segment_w_lock (segment_manager_t * sm,
+ u32 segment_index);
+int segment_manager_add_segment (segment_manager_t * sm, u32 segment_size);
+void segment_manager_del_segment (segment_manager_t * sm,
+ svm_fifo_segment_private_t * fs);
+void segment_manager_segment_reader_unlock (segment_manager_t * sm);
+void segment_manager_segment_writer_unlock (segment_manager_t * sm);
+
+int segment_manager_add_first_segment (segment_manager_t * sm,
+ u32 segment_size);
+void segment_manager_del_sessions (segment_manager_t * sm);
void segment_manager_del (segment_manager_t * sm);
-int
-segment_manager_alloc_session_fifos (segment_manager_t * sm,
- svm_fifo_t ** server_rx_fifo,
- svm_fifo_t ** server_tx_fifo,
- u32 * fifo_segment_index);
-void
-segment_manager_dealloc_fifos (u32 svm_segment_index, svm_fifo_t * rx_fifo,
- svm_fifo_t * tx_fifo);
+void segment_manager_init_del (segment_manager_t * sm);
+u8 segment_manager_has_fifos (segment_manager_t * sm);
+int segment_manager_alloc_session_fifos (segment_manager_t * sm,
+ svm_fifo_t ** server_rx_fifo,
+ svm_fifo_t ** server_tx_fifo,
+ u32 * fifo_segment_index);
+int segment_manager_try_alloc_fifos (svm_fifo_segment_private_t * fs,
+ u32 rx_fifo_size, u32 tx_fifo_size,
+ svm_fifo_t ** rx_fifo,
+ svm_fifo_t ** tx_fifo);
+void segment_manager_dealloc_fifos (u32 segment_index, svm_fifo_t * rx_fifo,
+ svm_fifo_t * tx_fifo);
+u32 segment_manager_evt_q_expected_size (u32 q_size);
+svm_msg_q_t *segment_manager_alloc_queue (svm_fifo_segment_private_t * fs,
+ segment_manager_properties_t *
+ props);
+void segment_manager_dealloc_queue (segment_manager_t * sm, svm_queue_t * q);
+void segment_manager_app_detach (segment_manager_t * sm);
+
+void segment_manager_main_init (segment_manager_main_init_args_t * a);
+segment_manager_properties_t
+ * segment_manager_properties_init (segment_manager_properties_t * sm);
#endif /* SRC_VNET_SESSION_SEGMENT_MANAGER_H_ */
/*
Code Review / vpp.git / blobdiff