segment_manager.c File Reference

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Data Structures
struct	segment_manager_main_

Macros
#define	segment_manager_foreach_segment_w_lock(VAR, SM, BODY)

Typedefs
typedef struct segment_manager_main_	segment_manager_main_t

Functions
static segment_manager_props_t *	segment_manager_properties_get (segment_manager_t *sm)
segment_manager_props_t *	segment_manager_props_init (segment_manager_props_t *props)
u8	segment_manager_app_detached (segment_manager_t *sm)
void	segment_manager_app_detach (segment_manager_t *sm)
static u32	segment_manager_segment_index (segment_manager_t *sm, fifo_segment_t *seg)
int	segment_manager_add_segment (segment_manager_t *sm, uword segment_size, u8 notify_app)
	Adds segment to segment manager's pool. More...
void	segment_manager_del_segment (segment_manager_t *sm, fifo_segment_t *fs)
	Remove segment without lock. More...
static fifo_segment_t *	segment_manager_get_segment_if_valid (segment_manager_t *sm, u32 segment_index)
static void	sm_lock_and_del_segment_inline (segment_manager_t *sm, u32 fs_index)
	Removes segment after acquiring writer lock. More...
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)
	Reads a segment from the segment manager's pool without lock. More...
u64	segment_manager_segment_handle (segment_manager_t *sm, fifo_segment_t *segment)
u64	segment_manager_make_segment_handle (u32 segment_manager_index, u32 segment_index)
fifo_segment_t *	segment_manager_get_segment_w_handle (u64 segment_handle)
fifo_segment_t *	segment_manager_get_segment_w_lock (segment_manager_t *sm, u32 segment_index)
	Reads a segment from the segment manager's pool and acquires reader lock. More...
void	segment_manager_segment_reader_lock (segment_manager_t *sm)
void	segment_manager_segment_reader_unlock (segment_manager_t *sm)
void	segment_manager_segment_writer_unlock (segment_manager_t *sm)
segment_manager_t *	segment_manager_alloc (void)
int	segment_manager_init (segment_manager_t *sm)
int	segment_manager_init_first (segment_manager_t *sm)
	Initializes segment manager based on options provided. More...
void	segment_manager_cleanup_detached_listener (segment_manager_t *sm)
void	segment_manager_free (segment_manager_t *sm)
	Cleanup segment manager. More...
static void	sm_free_w_index_helper (void *arg)
static void	segment_manager_free_safe (segment_manager_t *sm)
void	segment_manager_init_free (segment_manager_t *sm)
	Initiate segment manager cleanup. More...
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)
u8	segment_manager_has_fifos (segment_manager_t *sm)
void	segment_manager_del_sessions (segment_manager_t *sm)
	Initiate disconnects for all sessions 'owned' by a segment manager. More...
void	segment_manager_del_sessions_filter (segment_manager_t *sm, session_state_t *states)
	Initiate disconnects for sessions in specified state 'owned' by a segment manager. More...
int	segment_manager_try_alloc_fifos (fifo_segment_t *fifo_segment, u32 thread_index, u32 rx_fifo_size, u32 tx_fifo_size, svm_fifo_t **rx_fifo, svm_fifo_t **tx_fifo)
int	segment_manager_alloc_session_fifos (segment_manager_t *sm, u32 thread_index, 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)
u32	segment_manager_evt_q_expected_size (u32 q_len)
svm_msg_q_t *	segment_manager_alloc_queue (fifo_segment_t *segment, segment_manager_props_t *props)
	Allocates shm queue in the first segment. More...
svm_msg_q_t *	segment_manager_event_queue (segment_manager_t *sm)
void	segment_manager_dealloc_queue (segment_manager_t *sm, svm_queue_t *q)
	Frees shm queue allocated in the first segment. More...
void	segment_manager_main_init (void)
static clib_error_t *	segment_manager_show_fn (vlib_main_t *vm, unformat_input_t *input, vlib_cli_command_t *cmd)
void	segment_manager_format_sessions (segment_manager_t *sm, int verbose)
void	segment_manager_set_watermarks (segment_manager_t *sm, u8 high_watermark, u8 low_watermark)

Variables
static segment_manager_main_t	sm_main
static vlib_cli_command_t	segment_manager_show_command
	(constructor) VLIB_CLI_COMMAND (segment_manager_show_command) More...

Macro Definition Documentation

segment_manager_foreach_segment_w_lock

#define segment_manager_foreach_segment_w_lock	(		VAR,
			SM,
			BODY
	)

Value:

do {                                                                    \
    clib_rwlock_reader_lock (&(SM)->segments_rwlock);                   \
    pool_foreach((VAR), ((SM)->segments)) (BODY);                       \
    clib_rwlock_reader_unlock (&(SM)->segments_rwlock);                 \
} while (0)

Definition at line 38 of file segment_manager.c.

Typedef Documentation

segment_manager_main_t

typedef struct segment_manager_main_ segment_manager_main_t

Function Documentation

segment_manager_add_segment()

int segment_manager_add_segment	(	segment_manager_t *	sm,
		uword	segment_size,
		u8	notify_app
	)

Adds segment to segment manager's pool.

If needed a writer's lock is acquired before allocating a new segment to avoid affecting any of the segments pool readers.

Definition at line 91 of file segment_manager.c.

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segment_manager_alloc()

segment_manager_t* segment_manager_alloc

(

void

)

Definition at line 321 of file segment_manager.c.

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segment_manager_alloc_queue()

svm_msg_q_t* segment_manager_alloc_queue	(	fifo_segment_t *	segment,
		segment_manager_props_t *	props
	)

Allocates shm queue in the first segment.

Must be called with lock held

Definition at line 899 of file segment_manager.c.

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segment_manager_alloc_session_fifos()

int segment_manager_alloc_session_fifos	(	segment_manager_t *	sm,
		u32	thread_index,
		svm_fifo_t **	rx_fifo,
		svm_fifo_t **	tx_fifo
	)

Definition at line 722 of file segment_manager.c.

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segment_manager_app_detach()

void segment_manager_app_detach

(

segment_manager_t *

sm

)

Definition at line 73 of file segment_manager.c.

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segment_manager_app_detached()

u8 segment_manager_app_detached

(

segment_manager_t *

sm

)

Definition at line 67 of file segment_manager.c.

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segment_manager_attach_fifo()

void segment_manager_attach_fifo	(	segment_manager_t *	sm,
		svm_fifo_t **	f,
		session_t *	s
	)

Definition at line 863 of file segment_manager.c.

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segment_manager_cleanup_detached_listener()

void segment_manager_cleanup_detached_listener

(

segment_manager_t *

sm

)

Definition at line 441 of file segment_manager.c.

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segment_manager_dealloc_fifos()

void segment_manager_dealloc_fifos	(	svm_fifo_t *	rx_fifo,
		svm_fifo_t *	tx_fifo
	)

Definition at line 810 of file segment_manager.c.

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segment_manager_dealloc_queue()

void segment_manager_dealloc_queue	(	segment_manager_t *	sm,
		svm_queue_t *	q
	)

Frees shm queue allocated in the first segment.

Definition at line 939 of file segment_manager.c.

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segment_manager_del_segment()

void segment_manager_del_segment	(	segment_manager_t *	sm,
		fifo_segment_t *	fs
	)

Remove segment without lock.

Definition at line 188 of file segment_manager.c.

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segment_manager_del_sessions()

void segment_manager_del_sessions

(

segment_manager_t *

sm

)

Initiate disconnects for all sessions 'owned' by a segment manager.

Cleanup segment manager sessions.

Definition at line 581 of file segment_manager.c.

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segment_manager_del_sessions_filter()

void segment_manager_del_sessions_filter	(	segment_manager_t *	sm,
		session_state_t *	states
	)

Initiate disconnects for sessions in specified state 'owned' by a segment manager.

Definition at line 634 of file segment_manager.c.

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segment_manager_detach_fifo()

void segment_manager_detach_fifo	(	segment_manager_t *	sm,
		svm_fifo_t **	f
	)

Definition at line 853 of file segment_manager.c.

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segment_manager_event_queue()

svm_msg_q_t* segment_manager_event_queue

(

segment_manager_t *

sm

)

Definition at line 930 of file segment_manager.c.

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segment_manager_evt_q_expected_size()

u32 segment_manager_evt_q_expected_size

(

u32

q_len

)

Definition at line 877 of file segment_manager.c.

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segment_manager_format_sessions()

void segment_manager_format_sessions	(	segment_manager_t *	sm,
		int	verbose
	)

Definition at line 1047 of file segment_manager.c.

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segment_manager_free()

void segment_manager_free

(

segment_manager_t *

sm

)

Cleanup segment manager.

Parameters

sm	segment manager to be freed

Definition at line 456 of file segment_manager.c.

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segment_manager_free_safe()

static void segment_manager_free_safe ( segment_manager_t *  sm )

static

Definition at line 502 of file segment_manager.c.

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segment_manager_get()

segment_manager_t* segment_manager_get

(

u32

index

)

Definition at line 532 of file segment_manager.c.

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segment_manager_get_if_valid()

segment_manager_t* segment_manager_get_if_valid

(

u32

index

)

Definition at line 538 of file segment_manager.c.

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segment_manager_get_segment()

fifo_segment_t* segment_manager_get_segment	(	segment_manager_t *	sm,
		u32	segment_index
	)

Reads a segment from the segment manager's pool without lock.

Definition at line 254 of file segment_manager.c.

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segment_manager_get_segment_if_valid()

static fifo_segment_t* segment_manager_get_segment_if_valid ( segment_manager_t *  sm, u32  segment_index  )

static

Definition at line 211 of file segment_manager.c.

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segment_manager_get_segment_w_handle()

fifo_segment_t* segment_manager_get_segment_w_handle

(

u64

segment_handle

)

Definition at line 275 of file segment_manager.c.

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segment_manager_get_segment_w_lock()

fifo_segment_t* segment_manager_get_segment_w_lock	(	segment_manager_t *	sm,
		u32	segment_index
	)

Reads a segment from the segment manager's pool and acquires reader lock.

Caller must drop the reader's lock by calling segment_manager_segment_reader_unlock once it finishes working with the segment.

Definition at line 296 of file segment_manager.c.

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segment_manager_has_fifos()

u8 segment_manager_has_fifos

(

segment_manager_t *

sm

)

Definition at line 552 of file segment_manager.c.

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segment_manager_index()

u32 segment_manager_index

(

segment_manager_t *

sm

)

Definition at line 546 of file segment_manager.c.

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segment_manager_init()

int segment_manager_init

(

segment_manager_t *

sm

)

Definition at line 332 of file segment_manager.c.

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segment_manager_init_first()

int segment_manager_init_first

(

segment_manager_t *

sm

)

Initializes segment manager based on options provided.

Returns error if ssvm segment(s) allocation fails.

Definition at line 353 of file segment_manager.c.

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segment_manager_init_free()

void segment_manager_init_free

(

segment_manager_t *

sm

)

Initiate segment manager cleanup.

Parameters

sm	segment manager to be freed

Definition at line 517 of file segment_manager.c.

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segment_manager_lock_and_del_segment()

void segment_manager_lock_and_del_segment	(	segment_manager_t *	sm,
		u32	fs_index
	)

Definition at line 245 of file segment_manager.c.

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segment_manager_main_init()

void segment_manager_main_init

(

void

)

Definition at line 960 of file segment_manager.c.

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segment_manager_make_segment_handle()

u64 segment_manager_make_segment_handle	(	u32	segment_manager_index,
		u32	segment_index
	)

Definition at line 268 of file segment_manager.c.

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segment_manager_properties_get()

static segment_manager_props_t* segment_manager_properties_get ( segment_manager_t *  sm )

static

Definition at line 46 of file segment_manager.c.

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segment_manager_props_init()

segment_manager_props_t* segment_manager_props_init

(

segment_manager_props_t *

props

)

Definition at line 53 of file segment_manager.c.

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segment_manager_segment_handle()

u64 segment_manager_segment_handle	(	segment_manager_t *	sm,
		fifo_segment_t *	segment
	)

Definition at line 260 of file segment_manager.c.

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segment_manager_segment_index()

static u32 segment_manager_segment_index ( segment_manager_t *  sm, fifo_segment_t *  seg  )

inlinestatic

Definition at line 79 of file segment_manager.c.

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segment_manager_segment_reader_lock()

void segment_manager_segment_reader_lock

(

segment_manager_t *

sm

)

Definition at line 303 of file segment_manager.c.

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segment_manager_segment_reader_unlock()

void segment_manager_segment_reader_unlock

(

segment_manager_t *

sm

)

Definition at line 309 of file segment_manager.c.

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segment_manager_segment_writer_unlock()

void segment_manager_segment_writer_unlock

(

segment_manager_t *

sm

)

Definition at line 315 of file segment_manager.c.

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segment_manager_set_watermarks()

void segment_manager_set_watermarks	(	segment_manager_t *	sm,
		u8	high_watermark,
		u8	low_watermark
	)

Definition at line 1110 of file segment_manager.c.

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segment_manager_show_fn()

static clib_error_t* segment_manager_show_fn ( vlib_main_t *  vm, unformat_input_t *  input, vlib_cli_command_t *  cmd  )

static

Definition at line 973 of file segment_manager.c.

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segment_manager_try_alloc_fifos()

int segment_manager_try_alloc_fifos	(	fifo_segment_t *	fifo_segment,
		u32	thread_index,
		u32	rx_fifo_size,
		u32	tx_fifo_size,
		svm_fifo_t **	rx_fifo,
		svm_fifo_t **	tx_fifo
	)

Definition at line 683 of file segment_manager.c.

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sm_free_w_index_helper()

static void sm_free_w_index_helper ( void *  arg )

static

Definition at line 490 of file segment_manager.c.

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sm_lock_and_del_segment_inline()

static void sm_lock_and_del_segment_inline ( segment_manager_t *  sm, u32  fs_index  )

inlinestatic

Removes segment after acquiring writer lock.

Definition at line 223 of file segment_manager.c.

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Variable Documentation

segment_manager_show_command

vlib_cli_command_t segment_manager_show_command

static

Initial value:

=
{
  .path = "show segment-manager",
  .short_help = "show segment-manager [segments][verbose]",
  .function = segment_manager_show_fn,
}

(constructor) VLIB_CLI_COMMAND (segment_manager_show_command)

Definition at line 1038 of file segment_manager.c.

sm_main

segment_manager_main_t sm_main

static

Definition at line 36 of file segment_manager.c.