X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=blobdiff_plain;f=src%2Fvnet%2Fsession%2Fsegment_manager.h;h=cd02d5480ae006d235a5ad2b7b4ccc890fcf7b4d;hp=778d6040e9424328c21a79d7e2b7ba08d44f180a;hb=2de9c0f92;hpb=6cf30adc2cd3aa818e5d97cf71ea8b2fc2aaefa7 diff --git a/src/vnet/session/segment_manager.h b/src/vnet/session/segment_manager.h index 778d6040e94..cd02d5480ae 100644 --- a/src/vnet/session/segment_manager.h +++ b/src/vnet/session/segment_manager.h @@ -1,5 +1,5 @@ /* - * Copyright (c) 2017 Cisco and/or its affiliates. + * Copyright (c) 2017-2019 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this file except in compliance with the License. * You may obtain a copy of the License at: @@ -15,86 +15,145 @@ #ifndef SRC_VNET_SESSION_SEGMENT_MANAGER_H_ #define SRC_VNET_SESSION_SEGMENT_MANAGER_H_ -#include -#include +#include +#include +#include +#include +#include -typedef struct _segment_manager_properties +typedef struct _segment_manager_props { - /** 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; - -} segment_manager_properties_t; + u32 rx_fifo_size; /**< receive fifo size */ + u32 tx_fifo_size; /**< transmit fifo size */ + u32 evt_q_size; /**< event queue length */ + u32 prealloc_fifos; /**< preallocated fifo pairs */ + uword segment_size; /**< first segment size */ + uword 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 */ + u8 n_slices; /**< number of fs slices/threads */ + ssvm_segment_type_t segment_type; /**< seg type: if set to SSVM_N_TYPES, + private segments are used */ + u32 max_fifo_size; /**< max fifo size */ + u8 high_watermark; /**< memory usage high watermark % */ + u8 low_watermark; /**< memory usage low watermark % */ + u8 pct_first_alloc; /**< pct of fifo size to alloc */ +} segment_manager_props_t; typedef struct _segment_manager { - /** segments mapped by this manager */ - u32 *segment_indices; + /** Pool of segments allocated by this manager */ + fifo_segment_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; + + u32 max_fifo_size; + u8 high_watermark; + u8 low_watermark; +} segment_manager_t; - /** Owner app index */ - u32 app_index; +typedef struct segment_manager_main_init_args_ +{ + u64 baseva; + u64 size; +} segment_manager_main_init_args_t; - /** Pointer to manager properties. Could be shared among all of - * an app's segment managers s*/ - segment_manager_properties_t *properties; -} segment_manager_t; +#define SEGMENT_MANAGER_INVALID_APP_INDEX ((u32) ~0) -/** Pool of segment managers */ -extern segment_manager_t *segment_managers; +segment_manager_t *segment_manager_alloc (void); +int segment_manager_init (segment_manager_t * sm); -always_inline segment_manager_t * -segment_manager_new () -{ - segment_manager_t *sm; - pool_get (segment_managers, sm); - memset (sm, 0, sizeof (*sm)); - return sm; -} - -always_inline segment_manager_t * -segment_manager_get (u32 index) -{ - return pool_elt_at_index (segment_managers, index); -} +/** + * Cleanup segment manager + * + * @param sm segment manager to be freed + */ +void segment_manager_free (segment_manager_t * sm); -always_inline segment_manager_t * -segment_manager_get_if_valid (u32 index) -{ - if (pool_is_free_index (segment_managers, index)) - return 0; - return pool_elt_at_index (segment_managers, index); -} +/** + * Initiate segment manager cleanup + * + * @param sm segment manager to be freed + */ +void segment_manager_init_free (segment_manager_t * sm); +segment_manager_t *segment_manager_get (u32 index); +segment_manager_t *segment_manager_get_if_valid (u32 index); +u32 segment_manager_index (segment_manager_t * sm); + +int segment_manager_add_segment (segment_manager_t * sm, uword segment_size); +void segment_manager_del_segment (segment_manager_t * sm, + fifo_segment_t * fs); +fifo_segment_t *segment_manager_get_segment (segment_manager_t * sm, + u32 segment_index); +fifo_segment_t *segment_manager_get_segment_w_handle (u64 sh); +fifo_segment_t *segment_manager_get_segment_w_lock (segment_manager_t * sm, + u32 segment_index); +int segment_manager_add_first_segment (segment_manager_t * sm, + u32 segment_size); +u64 segment_manager_make_segment_handle (u32 segment_manager_index, + u32 segment_index); +u64 segment_manager_segment_handle (segment_manager_t * sm, + fifo_segment_t * segment); +void segment_manager_segment_reader_unlock (segment_manager_t * sm); +void segment_manager_segment_writer_unlock (segment_manager_t * sm); + +int segment_manager_alloc_session_fifos (segment_manager_t * sm, + u32 thread_index, + svm_fifo_t ** rx_fifo, + svm_fifo_t ** tx_fifo); +int segment_manager_try_alloc_fifos (fifo_segment_t * fs, + u32 thread_index, + u32 rx_fifo_size, u32 tx_fifo_size, + svm_fifo_t ** rx_fifo, + svm_fifo_t ** tx_fifo); +void segment_manager_dealloc_fifos (svm_fifo_t * rx_fifo, + svm_fifo_t * tx_fifo); + +void segment_manager_set_watermarks (segment_manager_t * sm, + u8 high_watermark, u8 low_watermark); + +u8 segment_manager_has_fifos (segment_manager_t * sm); + +svm_msg_q_t *segment_manager_alloc_queue (fifo_segment_t * fs, + segment_manager_props_t * props); +void segment_manager_dealloc_queue (segment_manager_t * sm, svm_queue_t * q); +svm_msg_q_t *segment_manager_event_queue (segment_manager_t * sm); +u32 segment_manager_evt_q_expected_size (u32 q_size); + +void segment_manager_app_detach (segment_manager_t * sm); + +/** + * Cleanup segment manager sessions + * + * Initiates disconnects for all sessions 'owned' by a segment manager by + * leveraging the backpointers that fifos keep. + * + * @param sm segment manager whose sessions are to be disconnected + */ +void segment_manager_del_sessions (segment_manager_t * sm); +void segment_manager_format_sessions (segment_manager_t * sm, int verbose); -always_inline u32 -segment_manager_index (segment_manager_t * sm) -{ - return sm - segment_managers; -} - -int -segment_manager_init (segment_manager_t * sm, - segment_manager_properties_t * properties, - u32 seg_size); - -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); -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_main_init (segment_manager_main_init_args_t * a); + +segment_manager_props_t *segment_manager_props_init (segment_manager_props_t * + sm); #endif /* SRC_VNET_SESSION_SEGMENT_MANAGER_H_ */ /*