diff options
Diffstat (limited to 'src/vnet')
| -rw-r--r-- | src/vnet/session/application_local.c | 117 |
1 files changed, 70 insertions, 47 deletions
diff --git a/src/vnet/session/application_local.c b/src/vnet/session/application_local.c index 5a946b4611d..d9798966c2b 100644 --- a/src/vnet/session/application_local.c +++ b/src/vnet/session/application_local.c @@ -144,6 +144,27 @@ ct_session_endpoint (session_t * ll, session_endpoint_t * sep) } static void +ct_set_invalid_app_wrk (ct_connection_t *ct, u8 is_client) +{ + ct_connection_t *peer_ct; + + peer_ct = ct_connection_get (ct->peer_index, ct->c_thread_index); + + if (is_client) + { + ct->client_wrk = APP_INVALID_INDEX; + if (peer_ct) + ct->client_wrk = APP_INVALID_INDEX; + } + else + { + ct->server_wrk = APP_INVALID_INDEX; + if (peer_ct) + ct->server_wrk = APP_INVALID_INDEX; + } +} + +static void ct_session_dealloc_fifos (ct_connection_t *ct, svm_fifo_t *rx_fifo, svm_fifo_t *tx_fifo) { @@ -153,8 +174,8 @@ ct_session_dealloc_fifos (ct_connection_t *ct, svm_fifo_t *rx_fifo, app_worker_t *app_wrk; ct_segment_t *ct_seg; fifo_segment_t *fs; - u8 del_segment = 0; u32 seg_index; + session_t *s; int cnt; /* @@ -209,77 +230,79 @@ ct_session_dealloc_fifos (ct_connection_t *ct, svm_fifo_t *rx_fifo, if (ct->flags & CT_CONN_F_CLIENT) { cnt = ct_seg->client_n_sessions; - if (!cnt) - ct_seg->flags |= CT_SEGMENT_F_CLIENT_DETACHED; + if (cnt) + goto done; + ct_seg->flags |= CT_SEGMENT_F_CLIENT_DETACHED; + s = session_get (ct->c_s_index, ct->c_thread_index); + if (s->app_wrk_index == APP_INVALID_INDEX) + ct_set_invalid_app_wrk (ct, 1 /* is_client */); } else { cnt = ct_seg->server_n_sessions; - if (!cnt) - ct_seg->flags |= CT_SEGMENT_F_SERVER_DETACHED; + if (cnt) + goto done; + ct_seg->flags |= CT_SEGMENT_F_SERVER_DETACHED; + s = session_get (ct->c_s_index, ct->c_thread_index); + if (s->app_wrk_index == APP_INVALID_INDEX) + ct_set_invalid_app_wrk (ct, 0 /* is_client */); } + if (!(ct_seg->flags & CT_SEGMENT_F_CLIENT_DETACHED) || + !(ct_seg->flags & CT_SEGMENT_F_SERVER_DETACHED)) + goto done; + /* * Remove segment context because both client and server detached */ - if (!cnt && (ct_seg->flags & CT_SEGMENT_F_CLIENT_DETACHED) && - (ct_seg->flags & CT_SEGMENT_F_SERVER_DETACHED)) - { - pool_put_index (seg_ctx->segments, ct->ct_seg_index); + pool_put_index (seg_ctx->segments, ct->ct_seg_index); - /* - * No more segment indices left, remove the segments context - */ - if (!pool_elts (seg_ctx->segments)) - { - u64 table_handle = seg_ctx->client_wrk << 16 | seg_ctx->server_wrk; - table_handle = (u64) seg_ctx->sm_index << 32 | table_handle; - hash_unset (cm->app_segs_ctxs_table, table_handle); - pool_free (seg_ctx->segments); - pool_put_index (cm->app_seg_ctxs, ct->seg_ctx_index); - } - del_segment = 1; + /* + * No more segment indices left, remove the segments context + */ + if (!pool_elts (seg_ctx->segments)) + { + u64 table_handle = seg_ctx->client_wrk << 16 | seg_ctx->server_wrk; + table_handle = (u64) seg_ctx->sm_index << 32 | table_handle; + hash_unset (cm->app_segs_ctxs_table, table_handle); + pool_free (seg_ctx->segments); + pool_put_index (cm->app_seg_ctxs, ct->seg_ctx_index); } - clib_rwlock_writer_unlock (&cm->app_segs_lock); - /* - * Session counter went to zero, notify the app that detached + * Segment to be removed so notify both apps */ - if (cnt) - return; - if (ct->flags & CT_CONN_F_CLIENT) + app_wrk = app_worker_get_if_valid (ct->client_wrk); + /* Determine if client app still needs notification, i.e., if it is + * still attached. If client detached and this is the last ct session + * on this segment, then its connects segment manager should also be + * detached, so do not send notification */ + if (app_wrk) { - app_wrk = app_worker_get_if_valid (ct->client_wrk); - /* Determine if client app still needs notification, i.e., if it is - * still attached. If client detached and this is the last ct session - * on this segment, then its connects segment manager should also be - * detached, so do not send notification */ - if (app_wrk) - { - segment_manager_t *csm; - csm = app_worker_get_connect_segment_manager (app_wrk); - if (!segment_manager_app_detached (csm)) - app_worker_del_segment_notify (app_wrk, ct->segment_handle); - } + segment_manager_t *csm; + csm = app_worker_get_connect_segment_manager (app_wrk); + if (!segment_manager_app_detached (csm)) + app_worker_del_segment_notify (app_wrk, ct->segment_handle); } - else if (!segment_manager_app_detached (sm)) + + if (!segment_manager_app_detached (sm)) { app_wrk = app_worker_get (ct->server_wrk); app_worker_del_segment_notify (app_wrk, ct->segment_handle); } - if (!del_segment) - return; - segment_manager_lock_and_del_segment (sm, seg_index); /* Cleanup segment manager if needed. If server detaches there's a chance * the client's sessions will hold up segment removal */ if (segment_manager_app_detached (sm) && !segment_manager_has_fifos (sm)) segment_manager_free_safe (sm); + +done: + + clib_rwlock_writer_unlock (&cm->app_segs_lock); } int @@ -380,9 +403,6 @@ ct_lookup_free_segment (ct_main_t *cm, segment_manager_t *sm, pool_foreach (ct_seg, seg_ctx->segments) { /* Client or server has detached so segment cannot be used */ - if ((ct_seg->flags & CT_SEGMENT_F_SERVER_DETACHED) || - (ct_seg->flags & CT_SEGMENT_F_CLIENT_DETACHED)) - continue; fs = segment_manager_get_segment (sm, ct_seg->segment_index); free_bytes = fifo_segment_available_bytes (fs); max_fifos = fifo_segment_size (fs) / seg_ctx->fifo_pair_bytes; @@ -522,6 +542,8 @@ ct_init_accepted_session (app_worker_t *server_wrk, ct_connection_t *ct, ct->seg_ctx_index = ct_seg->seg_ctx_index; ct->ct_seg_index = ct_seg->ct_seg_index; fs_index = ct_seg->segment_index; + ct_seg->flags &= + ~(CT_SEGMENT_F_SERVER_DETACHED | CT_SEGMENT_F_CLIENT_DETACHED); __atomic_add_fetch (&ct_seg->server_n_sessions, 1, __ATOMIC_RELAXED); __atomic_add_fetch (&ct_seg->client_n_sessions, 1, __ATOMIC_RELAXED); } @@ -682,6 +704,7 @@ ct_accept_rpc_wrk_handler (void *accept_args) return; } + cct->server_wrk = sct->server_wrk; cct->seg_ctx_index = sct->seg_ctx_index; cct->ct_seg_index = sct->ct_seg_index; cct->client_rx_fifo = ss->tx_fifo; @@ -887,8 +910,8 @@ ct_session_postponed_cleanup (ct_connection_t *ct) /* Normal free for client session as the fifos are allocated through * the connects segment manager in a segment that's not shared with * the server */ - session_free_w_fifos (s); ct_session_dealloc_fifos (ct, ct->client_rx_fifo, ct->client_tx_fifo); + session_free_w_fifos (s); } else { |