X-Git-Url: https://gerrit.fd.io/r/gitweb?p=vpp.git;a=blobdiff_plain;f=src%2Fvnet%2Fsession%2Fsegment_manager.h;h=ef8b9703e8383f38fd56c8fc1f02ce489070951d;hp=6e5b898989179154a6dd95f0c7f491f66002f32d;hb=da78c5abc;hpb=c87c91d8b0e85997debaf575f2e30cc2702edf25 diff --git a/src/vnet/session/segment_manager.h b/src/vnet/session/segment_manager.h index 6e5b8989891..ef8b9703e83 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: @@ -15,51 +15,49 @@ #ifndef SRC_VNET_SESSION_SEGMENT_MANAGER_H_ #define SRC_VNET_SESSION_SEGMENT_MANAGER_H_ -#include -#include - -#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; - - /** Preallocated pool sizes */ - u32 preallocated_fifo_pairs; - - /** Configured additional segment size */ - u32 add_segment_size; - - /** Flag that indicates if additional segments should be created */ - u8 add_segment; - - /** Use private memory segment instead of shared memory */ - u8 use_private_segment; - - /** Use one or more private mheaps, instead of the global heap */ - u32 private_segment_count; - u32 private_segment_size; -} 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 */ + u32 prealloc_fifo_hdrs; /**< preallocated fifo hdrs */ + 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 enum seg_manager_flag_ +{ + SEG_MANAGER_F_DETACHED = 1 << 0, + SEG_MANAGER_F_DETACHED_LISTENER = 1 << 1, +} seg_manager_flag_t; typedef struct _segment_manager { - clib_spinlock_t lockp; + /** Pool of segments allocated by this manager */ + fifo_segment_t *segments; - /** segments mapped by this manager */ - u32 *segment_indices; + /** rwlock that protects the segments pool */ + clib_rwlock_t segments_rwlock; - /** Owner app index */ - u32 app_index; - - /** - * Pointer to manager properties. Could be shared among all of - * an app's segment managers s - */ - segment_manager_properties_t *properties; + /** Owner app worker index */ + u32 app_wrk_index; /** * First segment should not be deleted unless segment manger is deleted. @@ -67,59 +65,117 @@ typedef struct _segment_manager * allocated for the app. */ u8 first_is_protected; + + /** + * App event queue allocated in first segment + */ + svm_msg_q_t *event_queue; + + u8 flags; + + u32 max_fifo_size; + u8 high_watermark; + u8 low_watermark; } 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); +int segment_manager_init_first (segment_manager_t * 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); +void segment_manager_free_safe (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, + u8 notify_app); +void segment_manager_del_segment (segment_manager_t * sm, + fifo_segment_t * fs); +void segment_manager_lock_and_del_segment (segment_manager_t * sm, + u32 fs_index); +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_detach_fifo (segment_manager_t *sm, svm_fifo_t **f); +void segment_manager_attach_fifo (segment_manager_t *sm, svm_fifo_t **f, + session_t *s); + +void segment_manager_set_watermarks (segment_manager_t * sm, + u8 high_watermark, u8 low_watermark); -always_inline u32 -segment_manager_index (segment_manager_t * sm) -{ - return sm - segment_managers; -} +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); -segment_manager_t *segment_manager_new (); -int -segment_manager_init (segment_manager_t * sm, - segment_manager_properties_t * properties, - u32 seg_size); +u8 segment_manager_app_detached (segment_manager_t * sm); +void segment_manager_app_detach (segment_manager_t * sm); -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); +/** + * 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_del (segment_manager_t * sm); -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); -void -segment_manager_dealloc_fifos (u32 svm_segment_index, svm_fifo_t * rx_fifo, - svm_fifo_t * tx_fifo); -unix_shared_memory_queue_t *segment_manager_alloc_queue (segment_manager_t * - sm, u32 queue_size); -void segment_manager_dealloc_queue (segment_manager_t * sm, - unix_shared_memory_queue_t * q); +void segment_manager_del_sessions_filter (segment_manager_t *sm, + session_state_t *states); +void segment_manager_format_sessions (segment_manager_t * sm, int verbose); + +void segment_manager_main_init (void); + +segment_manager_props_t *segment_manager_props_init (segment_manager_props_t * + sm); + +static inline void +segment_manager_parse_segment_handle (u64 segment_handle, u32 * sm_index, + u32 * segment_index) +{ + *sm_index = segment_handle >> 32; + *segment_index = segment_handle & 0xFFFFFFFF; +} #endif /* SRC_VNET_SESSION_SEGMENT_MANAGER_H_ */ /*