| /* |
| * 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: |
| * |
| * http://www.apache.org/licenses/LICENSE-2.0 |
| * |
| * Unless required by applicable law or agreed to in writing, software |
| * distributed under the License is distributed on an "AS IS" BASIS, |
| * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. |
| * See the License for the specific language governing permissions and |
| * limitations under the License. |
| */ |
| |
| #include <vnet/session/segment_manager.h> |
| #include <vnet/session/session.h> |
| #include <vnet/session/application.h> |
| |
| typedef struct segment_manager_main_ |
| { |
| segment_manager_t *segment_managers; /**< Pool of segment managers */ |
| clib_valloc_main_t va_allocator; /**< Virtual address allocator */ |
| u32 seg_name_counter; /**< Counter for segment names */ |
| |
| /* |
| * Configuration |
| */ |
| u32 default_fifo_size; /**< default rx/tx fifo size */ |
| u32 default_segment_size; /**< default fifo segment size */ |
| u32 default_app_mq_size; /**< default app msg q size */ |
| } segment_manager_main_t; |
| |
| static segment_manager_main_t sm_main; |
| |
| #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) |
| |
| static segment_manager_props_t * |
| segment_manager_properties_get (segment_manager_t * sm) |
| { |
| app_worker_t *app_wrk = app_worker_get (sm->app_wrk_index); |
| return application_get_segment_manager_properties (app_wrk->app_index); |
| } |
| |
| segment_manager_props_t * |
| segment_manager_props_init (segment_manager_props_t * props) |
| { |
| props->add_segment_size = sm_main.default_segment_size; |
| props->rx_fifo_size = sm_main.default_fifo_size; |
| props->tx_fifo_size = sm_main.default_fifo_size; |
| props->evt_q_size = sm_main.default_app_mq_size; |
| return props; |
| } |
| |
| static u8 |
| segment_manager_app_detached (segment_manager_t * sm) |
| { |
| return (sm->app_wrk_index == SEGMENT_MANAGER_INVALID_APP_INDEX); |
| } |
| |
| void |
| segment_manager_app_detach (segment_manager_t * sm) |
| { |
| sm->app_wrk_index = SEGMENT_MANAGER_INVALID_APP_INDEX; |
| } |
| |
| always_inline u32 |
| segment_manager_segment_index (segment_manager_t * sm, fifo_segment_t * seg) |
| { |
| return (seg - sm->segments); |
| } |
| |
| /** |
| * 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. |
| */ |
| int |
| segment_manager_add_segment (segment_manager_t * sm, u32 segment_size) |
| { |
| segment_manager_main_t *smm = &sm_main; |
| u32 rnd_margin = 128 << 10, fs_index = ~0, page_size; |
| uword baseva = (uword) ~ 0ULL, alloc_size; |
| segment_manager_props_t *props; |
| fifo_segment_t *fs; |
| u8 *seg_name; |
| int rv; |
| |
| props = segment_manager_properties_get (sm); |
| |
| /* Not configured for addition of new segments and not first */ |
| if (!props->add_segment && !segment_size) |
| { |
| clib_warning ("cannot allocate new segment"); |
| return VNET_API_ERROR_INVALID_VALUE; |
| } |
| |
| /* |
| * Allocate fifo segment and lock if needed |
| */ |
| if (vlib_num_workers ()) |
| clib_rwlock_writer_lock (&sm->segments_rwlock); |
| |
| pool_get_zero (sm->segments, fs); |
| |
| /* |
| * Initialize ssvm segment and svm fifo private header |
| */ |
| segment_size = segment_size ? segment_size : props->add_segment_size; |
| page_size = clib_mem_get_page_size (); |
| segment_size = (segment_size + page_size - 1) & ~(page_size - 1); |
| if (props->segment_type != SSVM_SEGMENT_PRIVATE) |
| { |
| seg_name = format (0, "%d-%d%c", getpid (), smm->seg_name_counter++, 0); |
| alloc_size = (uword) segment_size + rnd_margin; |
| baseva = clib_valloc_alloc (&smm->va_allocator, alloc_size, 0); |
| if (!baseva) |
| { |
| clib_warning ("out of space for segments"); |
| pool_put (sm->segments, fs); |
| goto done; |
| } |
| } |
| else |
| seg_name = format (0, "%s%c", "process-private-segment", 0); |
| |
| fs->ssvm.ssvm_size = segment_size; |
| fs->ssvm.name = seg_name; |
| fs->ssvm.requested_va = baseva; |
| |
| if ((rv = ssvm_master_init (&fs->ssvm, props->segment_type))) |
| { |
| clib_warning ("svm_master_init ('%v', %u) failed", seg_name, |
| segment_size); |
| |
| if (props->segment_type != SSVM_SEGMENT_PRIVATE) |
| clib_valloc_free (&smm->va_allocator, baseva); |
| pool_put (sm->segments, fs); |
| goto done; |
| } |
| |
| fifo_segment_init (fs); |
| |
| /* |
| * Save segment index before dropping lock, if any held |
| */ |
| fs_index = fs - sm->segments; |
| |
| done: |
| |
| if (vlib_num_workers ()) |
| clib_rwlock_writer_unlock (&sm->segments_rwlock); |
| |
| return fs_index; |
| } |
| |
| /** |
| * Remove segment without lock |
| */ |
| void |
| segment_manager_del_segment (segment_manager_t * sm, fifo_segment_t * fs) |
| { |
| segment_manager_main_t *smm = &sm_main; |
| |
| if (ssvm_type (&fs->ssvm) != SSVM_SEGMENT_PRIVATE) |
| { |
| clib_valloc_free (&smm->va_allocator, fs->ssvm.requested_va); |
| |
| if (sm->app_wrk_index != SEGMENT_MANAGER_INVALID_APP_INDEX) |
| { |
| app_worker_t *app_wrk; |
| u64 segment_handle; |
| app_wrk = app_worker_get (sm->app_wrk_index); |
| segment_handle = segment_manager_segment_handle (sm, fs); |
| app_worker_del_segment_notify (app_wrk, segment_handle); |
| } |
| } |
| |
| ssvm_delete (&fs->ssvm); |
| |
| if (CLIB_DEBUG) |
| clib_memset (fs, 0xfb, sizeof (*fs)); |
| pool_put (sm->segments, fs); |
| } |
| |
| /** |
| * Removes segment after acquiring writer lock |
| */ |
| static inline void |
| segment_manager_lock_and_del_segment (segment_manager_t * sm, u32 fs_index) |
| { |
| fifo_segment_t *fs; |
| u8 is_prealloc; |
| |
| clib_rwlock_writer_lock (&sm->segments_rwlock); |
| fs = segment_manager_get_segment (sm, fs_index); |
| is_prealloc = fifo_segment_flags (fs) & FIFO_SEGMENT_F_IS_PREALLOCATED; |
| if (is_prealloc && !segment_manager_app_detached (sm)) |
| { |
| clib_rwlock_writer_unlock (&sm->segments_rwlock); |
| return; |
| } |
| |
| segment_manager_del_segment (sm, fs); |
| clib_rwlock_writer_unlock (&sm->segments_rwlock); |
| } |
| |
| /** |
| * Reads a segment from the segment manager's pool without lock |
| */ |
| fifo_segment_t * |
| segment_manager_get_segment (segment_manager_t * sm, u32 segment_index) |
| { |
| return pool_elt_at_index (sm->segments, segment_index); |
| } |
| |
| u64 |
| segment_manager_segment_handle (segment_manager_t * sm, |
| fifo_segment_t * segment) |
| { |
| u32 segment_index = segment_manager_segment_index (sm, segment); |
| return (((u64) segment_manager_index (sm) << 32) | segment_index); |
| } |
| |
| static 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; |
| } |
| |
| u64 |
| segment_manager_make_segment_handle (u32 segment_manager_index, |
| u32 segment_index) |
| { |
| return (((u64) segment_manager_index << 32) | segment_index); |
| } |
| |
| fifo_segment_t * |
| segment_manager_get_segment_w_handle (u64 segment_handle) |
| { |
| u32 sm_index, segment_index; |
| segment_manager_t *sm; |
| |
| segment_manager_parse_segment_handle (segment_handle, &sm_index, |
| &segment_index); |
| sm = segment_manager_get (sm_index); |
| if (!sm || pool_is_free_index (sm->segments, segment_index)) |
| return 0; |
| return pool_elt_at_index (sm->segments, segment_index); |
| } |
| |
| /** |
| * Reads a segment from the segment manager's pool and acquires reader lock |
| * |
| * Caller must drop the reader's lock by calling |
| * @ref segment_manager_segment_reader_unlock once it finishes working with |
| * the segment. |
| */ |
| fifo_segment_t * |
| segment_manager_get_segment_w_lock (segment_manager_t * sm, u32 segment_index) |
| { |
| clib_rwlock_reader_lock (&sm->segments_rwlock); |
| return pool_elt_at_index (sm->segments, segment_index); |
| } |
| |
| void |
| segment_manager_segment_reader_unlock (segment_manager_t * sm) |
| { |
| ASSERT (sm->segments_rwlock->n_readers > 0); |
| clib_rwlock_reader_unlock (&sm->segments_rwlock); |
| } |
| |
| void |
| segment_manager_segment_writer_unlock (segment_manager_t * sm) |
| { |
| clib_rwlock_writer_unlock (&sm->segments_rwlock); |
| } |
| |
| segment_manager_t * |
| segment_manager_alloc (void) |
| { |
| segment_manager_main_t *smm = &sm_main; |
| segment_manager_t *sm; |
| |
| pool_get_zero (smm->segment_managers, sm); |
| clib_rwlock_init (&sm->segments_rwlock); |
| return sm; |
| } |
| |
| /** |
| * Initializes segment manager based on options provided. |
| * Returns error if ssvm segment(s) allocation fails. |
| */ |
| int |
| segment_manager_init (segment_manager_t * sm, u32 first_seg_size, |
| u32 prealloc_fifo_pairs) |
| { |
| u32 rx_fifo_size, tx_fifo_size, pair_size; |
| u32 rx_rounded_data_size, tx_rounded_data_size; |
| u64 approx_total_size, max_seg_size = ((u64) 1 << 32) - (128 << 10); |
| segment_manager_props_t *props; |
| fifo_segment_t *segment; |
| u32 approx_segment_count; |
| int seg_index, i; |
| |
| props = segment_manager_properties_get (sm); |
| first_seg_size = clib_max (first_seg_size, sm_main.default_segment_size); |
| |
| if (prealloc_fifo_pairs) |
| { |
| /* Figure out how many segments should be preallocated */ |
| rx_rounded_data_size = (1 << (max_log2 (props->rx_fifo_size))); |
| tx_rounded_data_size = (1 << (max_log2 (props->tx_fifo_size))); |
| |
| rx_fifo_size = sizeof (svm_fifo_t) + rx_rounded_data_size; |
| tx_fifo_size = sizeof (svm_fifo_t) + tx_rounded_data_size; |
| pair_size = rx_fifo_size + tx_fifo_size; |
| |
| approx_total_size = (u64) prealloc_fifo_pairs *pair_size; |
| if (first_seg_size > approx_total_size) |
| max_seg_size = first_seg_size; |
| approx_segment_count = (approx_total_size + (max_seg_size - 1)) |
| / max_seg_size; |
| |
| /* Allocate the segments */ |
| for (i = 0; i < approx_segment_count + 1; i++) |
| { |
| seg_index = segment_manager_add_segment (sm, max_seg_size); |
| if (seg_index < 0) |
| { |
| clib_warning ("Failed to preallocate segment %d", i); |
| return seg_index; |
| } |
| |
| segment = segment_manager_get_segment (sm, seg_index); |
| if (i == 0) |
| sm->event_queue = segment_manager_alloc_queue (segment, props); |
| |
| fifo_segment_preallocate_fifo_pairs (segment, |
| props->rx_fifo_size, |
| props->tx_fifo_size, |
| &prealloc_fifo_pairs); |
| fifo_segment_flags (segment) = FIFO_SEGMENT_F_IS_PREALLOCATED; |
| if (prealloc_fifo_pairs == 0) |
| break; |
| } |
| } |
| else |
| { |
| seg_index = segment_manager_add_segment (sm, first_seg_size); |
| if (seg_index < 0) |
| { |
| clib_warning ("Failed to allocate segment"); |
| return seg_index; |
| } |
| segment = segment_manager_get_segment (sm, seg_index); |
| sm->event_queue = segment_manager_alloc_queue (segment, props); |
| } |
| |
| return 0; |
| } |
| |
| /** |
| * Cleanup segment manager. |
| */ |
| void |
| segment_manager_free (segment_manager_t * sm) |
| { |
| segment_manager_main_t *smm = &sm_main; |
| fifo_segment_t *fifo_segment; |
| |
| ASSERT (!segment_manager_has_fifos (sm) |
| && segment_manager_app_detached (sm)); |
| |
| /* If we have empty preallocated segments that haven't been removed, remove |
| * them now. Apart from that, the first segment in the first segment manager |
| * is not removed when all fifos are removed. It can only be removed when |
| * the manager is explicitly deleted/detached by the app. */ |
| clib_rwlock_writer_lock (&sm->segments_rwlock); |
| |
| /* *INDENT-OFF* */ |
| pool_foreach (fifo_segment, sm->segments, ({ |
| segment_manager_del_segment (sm, fifo_segment); |
| })); |
| /* *INDENT-ON* */ |
| |
| clib_rwlock_writer_unlock (&sm->segments_rwlock); |
| |
| clib_rwlock_free (&sm->segments_rwlock); |
| if (CLIB_DEBUG) |
| clib_memset (sm, 0xfe, sizeof (*sm)); |
| pool_put (smm->segment_managers, sm); |
| } |
| |
| void |
| segment_manager_init_free (segment_manager_t * sm) |
| { |
| segment_manager_app_detach (sm); |
| if (segment_manager_has_fifos (sm)) |
| segment_manager_del_sessions (sm); |
| else |
| { |
| ASSERT (!sm->first_is_protected || segment_manager_app_detached (sm)); |
| segment_manager_free (sm); |
| } |
| } |
| |
| segment_manager_t * |
| segment_manager_get (u32 index) |
| { |
| return pool_elt_at_index (sm_main.segment_managers, index); |
| } |
| |
| segment_manager_t * |
| segment_manager_get_if_valid (u32 index) |
| { |
| if (pool_is_free_index (sm_main.segment_managers, index)) |
| return 0; |
| return pool_elt_at_index (sm_main.segment_managers, index); |
| } |
| |
| u32 |
| segment_manager_index (segment_manager_t * sm) |
| { |
| return sm - sm_main.segment_managers; |
| } |
| |
| u8 |
| segment_manager_has_fifos (segment_manager_t * sm) |
| { |
| fifo_segment_t *seg; |
| u8 first = 1; |
| |
| /* *INDENT-OFF* */ |
| segment_manager_foreach_segment_w_lock (seg, sm, ({ |
| if (CLIB_DEBUG && !first && !fifo_segment_has_fifos (seg) |
| && !(fifo_segment_flags (seg) & FIFO_SEGMENT_F_IS_PREALLOCATED)) |
| { |
| clib_warning ("segment %d has no fifos!", |
| segment_manager_segment_index (sm, seg)); |
| first = 0; |
| } |
| if (fifo_segment_has_fifos (seg)) |
| { |
| segment_manager_segment_reader_unlock (sm); |
| return 1; |
| } |
| })); |
| /* *INDENT-ON* */ |
| |
| return 0; |
| } |
| |
| /** |
| * Initiate disconnects for all sessions 'owned' by a segment manager |
| */ |
| void |
| segment_manager_del_sessions (segment_manager_t * sm) |
| { |
| fifo_segment_t *fifo_segment; |
| session_handle_t *handles = 0, *handle; |
| session_t *session; |
| svm_fifo_t *fifo; |
| |
| ASSERT (pool_elts (sm->segments) != 0); |
| |
| /* Across all fifo segments used by the server */ |
| /* *INDENT-OFF* */ |
| segment_manager_foreach_segment_w_lock (fifo_segment, sm, ({ |
| fifo = fifo_segment_get_fifo_list (fifo_segment); |
| |
| /* |
| * Remove any residual sessions from the session lookup table |
| * Don't bother deleting the individual fifos, we're going to |
| * throw away the fifo segment in a minute. |
| */ |
| while (fifo) |
| { |
| session = session_get_if_valid (fifo->master_session_index, |
| fifo->master_thread_index); |
| if (session) |
| vec_add1 (handles, session_handle (session)); |
| fifo = fifo->next; |
| } |
| |
| /* Instead of removing the segment, test when cleaning up disconnected |
| * sessions if the segment can be removed. |
| */ |
| })); |
| /* *INDENT-ON* */ |
| |
| vec_foreach (handle, handles) |
| session_close (session_get_from_handle (*handle)); |
| } |
| |
| int |
| segment_manager_try_alloc_fifos (fifo_segment_t * fifo_segment, |
| u32 rx_fifo_size, u32 tx_fifo_size, |
| svm_fifo_t ** rx_fifo, svm_fifo_t ** tx_fifo) |
| { |
| rx_fifo_size = clib_max (rx_fifo_size, sm_main.default_fifo_size); |
| *rx_fifo = fifo_segment_alloc_fifo (fifo_segment, rx_fifo_size, |
| FIFO_SEGMENT_RX_FIFO); |
| |
| tx_fifo_size = clib_max (tx_fifo_size, sm_main.default_fifo_size); |
| *tx_fifo = fifo_segment_alloc_fifo (fifo_segment, tx_fifo_size, |
| FIFO_SEGMENT_TX_FIFO); |
| |
| if (*rx_fifo == 0) |
| { |
| /* This would be very odd, but handle it... */ |
| if (*tx_fifo != 0) |
| { |
| fifo_segment_free_fifo (fifo_segment, *tx_fifo); |
| *tx_fifo = 0; |
| } |
| return -1; |
| } |
| if (*tx_fifo == 0) |
| { |
| if (*rx_fifo != 0) |
| { |
| fifo_segment_free_fifo (fifo_segment, *rx_fifo); |
| *rx_fifo = 0; |
| } |
| return -1; |
| } |
| |
| return 0; |
| } |
| |
| int |
| segment_manager_alloc_session_fifos (segment_manager_t * sm, |
| svm_fifo_t ** rx_fifo, |
| svm_fifo_t ** tx_fifo) |
| { |
| int alloc_fail = 1, rv = 0, new_fs_index; |
| segment_manager_props_t *props; |
| fifo_segment_t *fs = 0; |
| u32 sm_index, fs_index; |
| u8 added_a_segment = 0; |
| u64 fs_handle; |
| |
| props = segment_manager_properties_get (sm); |
| |
| /* |
| * Find the first free segment to allocate the fifos in |
| */ |
| |
| /* *INDENT-OFF* */ |
| segment_manager_foreach_segment_w_lock (fs, sm, ({ |
| alloc_fail = segment_manager_try_alloc_fifos (fs, |
| props->rx_fifo_size, |
| props->tx_fifo_size, |
| rx_fifo, tx_fifo); |
| /* Exit with lock held, drop it after notifying app */ |
| if (!alloc_fail) |
| goto alloc_success; |
| })); |
| /* *INDENT-ON* */ |
| |
| alloc_check: |
| |
| if (!alloc_fail) |
| { |
| |
| alloc_success: |
| |
| ASSERT (rx_fifo && tx_fifo); |
| sm_index = segment_manager_index (sm); |
| fs_index = segment_manager_segment_index (sm, fs); |
| (*tx_fifo)->segment_manager = sm_index; |
| (*rx_fifo)->segment_manager = sm_index; |
| (*tx_fifo)->segment_index = fs_index; |
| (*rx_fifo)->segment_index = fs_index; |
| |
| if (added_a_segment) |
| { |
| app_worker_t *app_wrk; |
| fs_handle = segment_manager_segment_handle (sm, fs); |
| app_wrk = app_worker_get (sm->app_wrk_index); |
| rv = app_worker_add_segment_notify (app_wrk, fs_handle); |
| } |
| /* Drop the lock after app is notified */ |
| segment_manager_segment_reader_unlock (sm); |
| return rv; |
| } |
| |
| /* |
| * Allocation failed, see if we can add a new segment |
| */ |
| if (props->add_segment) |
| { |
| if (added_a_segment) |
| { |
| clib_warning ("Added a segment, still can't allocate a fifo"); |
| segment_manager_segment_reader_unlock (sm); |
| return SESSION_ERROR_NEW_SEG_NO_SPACE; |
| } |
| if ((new_fs_index = segment_manager_add_segment (sm, 0)) < 0) |
| { |
| clib_warning ("Failed to add new segment"); |
| return SESSION_ERROR_SEG_CREATE; |
| } |
| fs = segment_manager_get_segment_w_lock (sm, new_fs_index); |
| alloc_fail = segment_manager_try_alloc_fifos (fs, props->rx_fifo_size, |
| props->tx_fifo_size, |
| rx_fifo, tx_fifo); |
| added_a_segment = 1; |
| goto alloc_check; |
| } |
| else |
| { |
| clib_warning ("Can't add new seg and no space to allocate fifos!"); |
| return SESSION_ERROR_NO_SPACE; |
| } |
| } |
| |
| void |
| segment_manager_dealloc_fifos (svm_fifo_t * rx_fifo, svm_fifo_t * tx_fifo) |
| { |
| fifo_segment_t *fs; |
| segment_manager_t *sm; |
| u32 segment_index; |
| |
| if (!rx_fifo || !tx_fifo) |
| return; |
| |
| /* It's possible to have no segment manager if the session was removed |
| * as result of a detach. */ |
| if (!(sm = segment_manager_get_if_valid (rx_fifo->segment_manager))) |
| return; |
| |
| segment_index = rx_fifo->segment_index; |
| fs = segment_manager_get_segment_w_lock (sm, segment_index); |
| fifo_segment_free_fifo (fs, rx_fifo); |
| fifo_segment_free_fifo (fs, tx_fifo); |
| |
| /* |
| * Try to remove svm segment if it has no fifos. This can be done only if |
| * the segment is not the first in the segment manager or if it is first |
| * and it is not protected. Moreover, if the segment is first and the app |
| * has detached from the segment manager, remove the segment manager. |
| */ |
| if (!fifo_segment_has_fifos (fs)) |
| { |
| segment_manager_segment_reader_unlock (sm); |
| |
| /* Remove segment if it holds no fifos or first but not protected */ |
| if (segment_index != 0 || !sm->first_is_protected) |
| segment_manager_lock_and_del_segment (sm, segment_index); |
| |
| /* Remove segment manager if no sessions and detached from app */ |
| if (segment_manager_app_detached (sm) |
| && !segment_manager_has_fifos (sm)) |
| { |
| segment_manager_free (sm); |
| } |
| } |
| else |
| segment_manager_segment_reader_unlock (sm); |
| } |
| |
| u32 |
| segment_manager_evt_q_expected_size (u32 q_len) |
| { |
| u32 fifo_evt_size, notif_q_size, q_hdrs; |
| u32 msg_q_sz, fifo_evt_ring_sz, session_ntf_ring_sz; |
| |
| fifo_evt_size = 1 << max_log2 (sizeof (session_event_t)); |
| notif_q_size = clib_max (16, q_len >> 4); |
| |
| msg_q_sz = q_len * sizeof (svm_msg_q_msg_t); |
| fifo_evt_ring_sz = q_len * fifo_evt_size; |
| session_ntf_ring_sz = notif_q_size * 256; |
| q_hdrs = sizeof (svm_queue_t) + sizeof (svm_msg_q_t); |
| |
| return (msg_q_sz + fifo_evt_ring_sz + session_ntf_ring_sz + q_hdrs); |
| } |
| |
| /** |
| * Allocates shm queue in the first segment |
| * |
| * Must be called with lock held |
| */ |
| svm_msg_q_t * |
| segment_manager_alloc_queue (fifo_segment_t * segment, |
| segment_manager_props_t * props) |
| { |
| u32 fifo_evt_size, session_evt_size = 256, notif_q_size; |
| svm_msg_q_cfg_t _cfg, *cfg = &_cfg; |
| svm_msg_q_t *q; |
| void *oldheap; |
| |
| fifo_evt_size = sizeof (session_event_t); |
| notif_q_size = clib_max (16, props->evt_q_size >> 4); |
| /* *INDENT-OFF* */ |
| svm_msg_q_ring_cfg_t rc[SESSION_MQ_N_RINGS] = { |
| {props->evt_q_size, fifo_evt_size, 0}, |
| {notif_q_size, session_evt_size, 0} |
| }; |
| /* *INDENT-ON* */ |
| cfg->consumer_pid = 0; |
| cfg->n_rings = 2; |
| cfg->q_nitems = props->evt_q_size; |
| cfg->ring_cfgs = rc; |
| |
| oldheap = ssvm_push_heap (segment->ssvm.sh); |
| q = svm_msg_q_alloc (cfg); |
| ssvm_pop_heap (oldheap); |
| |
| if (props->use_mq_eventfd) |
| { |
| if (svm_msg_q_alloc_producer_eventfd (q)) |
| clib_warning ("failed to alloc eventfd"); |
| } |
| return q; |
| } |
| |
| svm_msg_q_t * |
| segment_manager_event_queue (segment_manager_t * sm) |
| { |
| return sm->event_queue; |
| } |
| |
| /** |
| * Frees shm queue allocated in the first segment |
| */ |
| void |
| segment_manager_dealloc_queue (segment_manager_t * sm, svm_queue_t * q) |
| { |
| fifo_segment_t *segment; |
| ssvm_shared_header_t *sh; |
| void *oldheap; |
| |
| ASSERT (!pool_is_free_index (sm->segments, 0)); |
| |
| segment = segment_manager_get_segment_w_lock (sm, 0); |
| sh = segment->ssvm.sh; |
| |
| oldheap = ssvm_push_heap (sh); |
| svm_queue_free (q); |
| ssvm_pop_heap (oldheap); |
| segment_manager_segment_reader_unlock (sm); |
| } |
| |
| /* |
| * Init segment vm address allocator |
| */ |
| void |
| segment_manager_main_init (segment_manager_main_init_args_t * a) |
| { |
| segment_manager_main_t *sm = &sm_main; |
| clib_valloc_chunk_t _ip, *ip = &_ip; |
| |
| ip->baseva = a->baseva; |
| ip->size = a->size; |
| |
| clib_valloc_init (&sm->va_allocator, ip, 1 /* lock */ ); |
| |
| sm->default_fifo_size = 1 << 12; |
| sm->default_segment_size = 1 << 20; |
| sm->default_app_mq_size = 128; |
| } |
| |
| static clib_error_t * |
| segment_manager_show_fn (vlib_main_t * vm, unformat_input_t * input, |
| vlib_cli_command_t * cmd) |
| { |
| segment_manager_main_t *smm = &sm_main; |
| fifo_segment_t *seg; |
| segment_manager_t *sm; |
| u8 show_segments = 0, verbose = 0; |
| char *address; |
| size_t size; |
| u32 active_fifos; |
| u32 free_fifos; |
| |
| while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT) |
| { |
| if (unformat (input, "segments")) |
| show_segments = 1; |
| else if (unformat (input, "verbose")) |
| verbose = 1; |
| else |
| return clib_error_return (0, "unknown input `%U'", |
| format_unformat_error, input); |
| } |
| vlib_cli_output (vm, "%d segment managers allocated", |
| pool_elts (smm->segment_managers)); |
| if (verbose && pool_elts (smm->segment_managers)) |
| { |
| vlib_cli_output (vm, "%-10s%=15s%=12s", "Index", "App Index", |
| "Segments"); |
| |
| /* *INDENT-OFF* */ |
| pool_foreach (sm, smm->segment_managers, ({ |
| vlib_cli_output (vm, "%-10d%=15d%=12d", segment_manager_index (sm), |
| sm->app_wrk_index, pool_elts (sm->segments)); |
| })); |
| /* *INDENT-ON* */ |
| |
| } |
| if (show_segments) |
| { |
| vlib_cli_output (vm, "%-15s%15s%15s%15s%15s%15s", "Name", "Type", |
| "HeapSize (M)", "ActiveFifos", "FreeFifos", "Address"); |
| |
| /* *INDENT-OFF* */ |
| pool_foreach (sm, smm->segment_managers, ({ |
| segment_manager_foreach_segment_w_lock (seg, sm, ({ |
| fifo_segment_info (seg, &address, &size); |
| active_fifos = fifo_segment_num_fifos (seg); |
| free_fifos = fifo_segment_num_free_fifos (seg, ~0 /* size */); |
| vlib_cli_output (vm, "%-15v%15U%15llu%15u%15u%15llx", |
| ssvm_name (&seg->ssvm), format_fifo_segment_type, |
| seg, size >> 20ULL, active_fifos, free_fifos, |
| address); |
| if (verbose) |
| vlib_cli_output (vm, "%U", format_fifo_segment, seg, verbose); |
| })); |
| })); |
| /* *INDENT-ON* */ |
| |
| } |
| return 0; |
| } |
| |
| /* *INDENT-OFF* */ |
| VLIB_CLI_COMMAND (segment_manager_show_command, static) = |
| { |
| .path = "show segment-manager", |
| .short_help = "show segment-manager [segments][verbose]", |
| .function = segment_manager_show_fn, |
| }; |
| /* *INDENT-ON* */ |
| |
| void |
| segment_manager_format_sessions (segment_manager_t * sm, int verbose) |
| { |
| fifo_segment_t *fifo_segment; |
| vlib_main_t *vm = vlib_get_main (); |
| app_worker_t *app_wrk; |
| const u8 *app_name; |
| u8 *s = 0; |
| |
| if (!sm) |
| { |
| if (verbose) |
| vlib_cli_output (vm, "%-40s%-20s%-15s%-10s", "Connection", "App", |
| "API Client", "SegManager"); |
| else |
| vlib_cli_output (vm, "%-40s%-20s", "Connection", "App"); |
| return; |
| } |
| |
| app_wrk = app_worker_get (sm->app_wrk_index); |
| app_name = application_name_from_index (app_wrk->app_index); |
| |
| clib_rwlock_reader_lock (&sm->segments_rwlock); |
| |
| /* *INDENT-OFF* */ |
| pool_foreach (fifo_segment, sm->segments, ({ |
| svm_fifo_t *fifo; |
| u8 *str; |
| |
| fifo = fifo_segment_get_fifo_list (fifo_segment); |
| while (fifo) |
| { |
| u32 session_index, thread_index; |
| session_t *session; |
| |
| session_index = fifo->master_session_index; |
| thread_index = fifo->master_thread_index; |
| |
| session = session_get (session_index, thread_index); |
| str = format (0, "%U", format_session, session, verbose); |
| |
| if (verbose) |
| s = format (s, "%-40s%-20s%-15u%-10u", str, app_name, |
| app_wrk->api_client_index, app_wrk->connects_seg_manager); |
| else |
| s = format (s, "%-40s%-20s", str, app_name); |
| |
| vlib_cli_output (vm, "%v", s); |
| vec_reset_length (s); |
| vec_free (str); |
| |
| fifo = fifo->next; |
| } |
| vec_free (s); |
| })); |
| /* *INDENT-ON* */ |
| |
| clib_rwlock_reader_unlock (&sm->segments_rwlock); |
| } |
| |
| /* |
| * fd.io coding-style-patch-verification: ON |
| * |
| * Local Variables: |
| * eval: (c-set-style "gnu") |
| * End: |
| */ |