/* * Copyright (c) 2017-2019 Cisco and/or its affiliates. * Licensed under the Apache License, Version 2.0 (the "License"); * you may not use this * 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 <stdio.h> #include <stdlib.h> #include <vcl/vppcom.h> #include <vcl/vcl_debug.h> #include <vcl/vcl_private.h> #include <svm/fifo_segment.h> __thread uword __vcl_worker_index = ~0; static inline int vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq, u32 n_max_msg) { u32 n_msgs = 0, sz, len; while ((sz = svm_msg_q_size (mq))) { len = vec_len (wrk->mq_msg_vector); vec_validate (wrk->mq_msg_vector, len + sz - 1); svm_msg_q_sub_raw_batch (mq, wrk->mq_msg_vector + len, sz); n_msgs += sz; } return n_msgs; } static void vcl_msg_add_ext_config (vcl_session_t *s, uword *offset) { svm_fifo_chunk_t *c; c = vcl_segment_alloc_chunk (vcl_vpp_worker_segment_handle (0), 0 /* one slice only */, s->ext_config->len, offset); if (c) clib_memcpy_fast (c->data, s->ext_config, s->ext_config->len); } void vcl_send_session_listen (vcl_worker_t *wrk, vcl_session_t *s) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_listen_msg_t *mp; svm_msg_q_t *mq; mq = vcl_worker_ctrl_mq (wrk); app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_LISTEN); mp = (session_listen_msg_t *) app_evt->evt->data; memset (mp, 0, sizeof (*mp)); mp->client_index = wrk->api_client_handle; mp->context = s->session_index; mp->wrk_index = wrk->vpp_wrk_index; mp->is_ip4 = s->transport.is_ip4; clib_memcpy_fast (&mp->ip, &s->transport.lcl_ip, sizeof (mp->ip)); mp->port = s->transport.lcl_port; mp->proto = s->session_type; mp->vrf = s->vrf; if (s->flags & VCL_SESSION_F_CONNECTED) mp->flags = TRANSPORT_CFG_F_CONNECTED; if (s->ext_config) vcl_msg_add_ext_config (s, &mp->ext_config); app_send_ctrl_evt_to_vpp (mq, app_evt); if (s->ext_config) { clib_mem_free (s->ext_config); s->ext_config = 0; } s->flags |= VCL_SESSION_F_PENDING_LISTEN; } static void vcl_send_session_connect (vcl_worker_t * wrk, vcl_session_t * s) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_connect_msg_t *mp; svm_msg_q_t *mq; mq = vcl_worker_ctrl_mq (wrk); app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_CONNECT); mp = (session_connect_msg_t *) app_evt->evt->data; memset (mp, 0, sizeof (*mp)); mp->client_index = wrk->api_client_handle; mp->context = s->session_index; mp->dscp = s->dscp; mp->wrk_index = wrk->vpp_wrk_index; mp->is_ip4 = s->transport.is_ip4; mp->parent_handle = s->parent_handle; clib_memcpy_fast (&mp->ip, &s->transport.rmt_ip, sizeof (mp->ip)); clib_memcpy_fast (&mp->lcl_ip, &s->transport.lcl_ip, sizeof (mp->lcl_ip)); mp->port = s->transport.rmt_port; mp->lcl_port = s->transport.lcl_port; mp->proto = s->session_type; mp->vrf = s->vrf; if (s->flags & VCL_SESSION_F_CONNECTED) mp->flags |= TRANSPORT_CFG_F_CONNECTED; if (s->ext_config) vcl_msg_add_ext_config (s, &mp->ext_config); app_send_ctrl_evt_to_vpp (mq, app_evt); if (s->ext_config) { clib_mem_free (s->ext_config); s->ext_config = 0; } } void vcl_send_session_unlisten (vcl_worker_t * wrk, vcl_session_t * s) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_unlisten_msg_t *mp; svm_msg_q_t *mq; mq = vcl_worker_ctrl_mq (wrk); app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_UNLISTEN); mp = (session_unlisten_msg_t *) app_evt->evt->data; memset (mp, 0, sizeof (*mp)); mp->client_index = wrk->api_client_handle; mp->wrk_index = wrk->vpp_wrk_index; mp->handle = s->vpp_handle; mp->context = wrk->wrk_index; app_send_ctrl_evt_to_vpp (mq, app_evt); } static void vcl_send_session_shutdown (vcl_worker_t *wrk, vcl_session_t *s) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_shutdown_msg_t *mp; svm_msg_q_t *mq; /* Send to thread that owns the session */ mq = s->vpp_evt_q; app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_SHUTDOWN); mp = (session_shutdown_msg_t *) app_evt->evt->data; memset (mp, 0, sizeof (*mp)); mp->client_index = wrk->api_client_handle; mp->handle = s->vpp_handle; app_send_ctrl_evt_to_vpp (mq, app_evt); } static void vcl_send_session_disconnect (vcl_worker_t * wrk, vcl_session_t * s) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_disconnect_msg_t *mp; svm_msg_q_t *mq; /* Send to thread that owns the session */ mq = s->vpp_evt_q; app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_DISCONNECT); mp = (session_disconnect_msg_t *) app_evt->evt->data; memset (mp, 0, sizeof (*mp)); mp->client_index = wrk->api_client_handle; mp->handle = s->vpp_handle; app_send_ctrl_evt_to_vpp (mq, app_evt); } static void vcl_send_app_detach (vcl_worker_t * wrk) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_app_detach_msg_t *mp; svm_msg_q_t *mq; mq = vcl_worker_ctrl_mq (wrk); app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_APP_DETACH); mp = (session_app_detach_msg_t *) app_evt->evt->data; memset (mp, 0, sizeof (*mp)); mp->client_index = wrk->api_client_handle; app_send_ctrl_evt_to_vpp (mq, app_evt); } static void vcl_send_session_accepted_reply (svm_msg_q_t * mq, u32 context, session_handle_t handle, int retval) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_accepted_reply_msg_t *rmp; app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_ACCEPTED_REPLY); rmp = (session_accepted_reply_msg_t *) app_evt->evt->data; rmp->handle = handle; rmp->context = context; rmp->retval = retval; app_send_ctrl_evt_to_vpp (mq, app_evt); } static void vcl_send_session_disconnected_reply (vcl_worker_t * wrk, vcl_session_t * s, int retval) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_disconnected_reply_msg_t *rmp; app_alloc_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt, SESSION_CTRL_EVT_DISCONNECTED_REPLY); rmp = (session_disconnected_reply_msg_t *) app_evt->evt->data; rmp->handle = s->vpp_handle; rmp->context = wrk->api_client_handle; rmp->retval = retval; app_send_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt); } static void vcl_send_session_reset_reply (vcl_worker_t * wrk, vcl_session_t * s, int retval) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_reset_reply_msg_t *rmp; app_alloc_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt, SESSION_CTRL_EVT_RESET_REPLY); rmp = (session_reset_reply_msg_t *) app_evt->evt->data; rmp->handle = s->vpp_handle; rmp->context = wrk->api_client_handle; rmp->retval = retval; app_send_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt); } void vcl_send_session_worker_update (vcl_worker_t * wrk, vcl_session_t * s, u32 wrk_index) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_worker_update_msg_t *mp; app_alloc_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt, SESSION_CTRL_EVT_WORKER_UPDATE); mp = (session_worker_update_msg_t *) app_evt->evt->data; mp->client_index = wrk->api_client_handle; mp->handle = s->vpp_handle; mp->req_wrk_index = wrk->vpp_wrk_index; mp->wrk_index = wrk_index; app_send_ctrl_evt_to_vpp (s->vpp_evt_q, app_evt); } int vcl_send_worker_rpc (u32 dst_wrk_index, void *data, u32 data_len) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_app_wrk_rpc_msg_t *mp; vcl_worker_t *dst_wrk, *wrk; svm_msg_q_t *mq; int ret = -1; if (data_len > sizeof (mp->data)) goto done; clib_spinlock_lock (&vcm->workers_lock); dst_wrk = vcl_worker_get_if_valid (dst_wrk_index); if (!dst_wrk) goto done; wrk = vcl_worker_get_current (); mq = vcl_worker_ctrl_mq (wrk); app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_APP_WRK_RPC); mp = (session_app_wrk_rpc_msg_t *) app_evt->evt->data; mp->client_index = wrk->api_client_handle; mp->wrk_index = dst_wrk->vpp_wrk_index; clib_memcpy (mp->data, data, data_len); app_send_ctrl_evt_to_vpp (mq, app_evt); ret = 0; done: clib_spinlock_unlock (&vcm->workers_lock); return ret; } int vcl_session_transport_attr (vcl_worker_t *wrk, vcl_session_t *s, u8 is_get, transport_endpt_attr_t *attr) { app_session_evt_t _app_evt, *app_evt = &_app_evt; session_transport_attr_msg_t *mp; svm_msg_q_t *mq; f64 timeout; ASSERT (!wrk->session_attr_op); mq = s->vpp_evt_q; if (PREDICT_FALSE (!mq)) { /* FIXME: attribute should be stored and sent once session is * bound/connected to vpp */ return 0; } wrk->session_attr_op = 1; wrk->session_attr_op_rv = -1; app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_TRANSPORT_ATTR); mp = (session_transport_attr_msg_t *) app_evt->evt->data; memset (mp, 0, sizeof (*mp)); mp->client_index = wrk->api_client_handle; mp->handle = s->vpp_handle; mp->is_get = is_get; mp->attr = *attr; app_send_ctrl_evt_to_vpp (mq, app_evt); timeout = clib_time_now (&wrk->clib_time) + 1; while (wrk->session_attr_op && clib_time_now (&wrk->clib_time) < timeout) vcl_flush_mq_events (); if (!wrk->session_attr_op_rv && is_get) *attr = wrk->session_attr_rv; wrk->session_attr_op = 0; return wrk->session_attr_op_rv; } static u32 vcl_session_accepted_handler (vcl_worker_t * wrk, session_accepted_msg_t * mp, u32 ls_index) { vcl_session_t *session, *listen_session; svm_msg_q_t *evt_q; session = vcl_session_alloc (wrk); listen_session = vcl_session_get (wrk, ls_index); if (listen_session->vpp_handle != mp->listener_handle) { VDBG (0, "ERROR: listener handle %lu does not match session %u", mp->listener_handle, ls_index); goto error; } if (vcl_segment_attach_session ( mp->segment_handle, mp->server_rx_fifo, mp->server_tx_fifo, mp->vpp_event_queue_address, mp->mq_index, 0, session)) { VDBG (0, "session %u [0x%llx]: failed to attach fifos", session->session_index, mp->handle); goto error; } session->vpp_handle = mp->handle; session->session_state = VCL_STATE_READY; if (mp->rmt.is_ip4) { session->original_dst_ip4 = mp->original_dst_ip4; session->original_dst_port = mp->original_dst_port; } session->transport.rmt_port = mp->rmt.port; session->transport.is_ip4 = mp->rmt.is_ip4; clib_memcpy_fast (&session->transport.rmt_ip, &mp->rmt.ip, sizeof (ip46_address_t)); vcl_session_table_add_vpp_handle (wrk, mp->handle, session->session_index); session->transport.lcl_port = mp->lcl.port; session->transport.lcl_ip = mp->lcl.ip; session->session_type = listen_session->session_type; session->is_dgram = vcl_proto_is_dgram (session->session_type); if (session->is_dgram) session->flags |= (listen_session->flags & VCL_SESSION_F_CONNECTED); session->listener_index = listen_session->session_index; listen_session->n_accepted_sessions++; vcl_evt (VCL_EVT_ACCEPT, session, listen_session, session_index); vcl_send_session_accepted_reply (session->vpp_evt_q, mp->context, session->vpp_handle, 0); return session->session_index; error: vcl_segment_attach_mq (vcl_vpp_worker_segment_handle (0), mp->vpp_event_queue_address, mp->mq_index, &evt_q); vcl_send_session_accepted_reply (evt_q, mp->context, mp->handle, VNET_API_ERROR_INVALID_ARGUMENT); vcl_session_free (wrk, session); return VCL_INVALID_SESSION_INDEX; } static u32 vcl_session_connected_handler (vcl_worker_t * wrk, session_connected_msg_t * mp) { vcl_session_t *session = 0; u32 session_index; session_index = mp->context; session = vcl_session_get (wrk, session_index); if (PREDICT_FALSE (!session)) { VERR ("vpp handle 0x%llx has no session index (%u)!", mp->handle, session_index); /* Should not happen but if it does, force vpp session cleanup */ vcl_session_t tmp_session = { .vpp_handle = mp->handle, .vpp_evt_q = 0, }; vcl_segment_attach_session ( mp->segment_handle, mp->server_rx_fifo, mp->server_tx_fifo, mp->vpp_event_queue_address, mp->mq_index, 0, session); if (tmp_session.vpp_evt_q) vcl_send_session_disconnect (wrk, &tmp_session); return VCL_INVALID_SESSION_INDEX; } if (mp->retval) { VDBG (0, "session %u: connect failed! %U", session_index, format_session_error, mp->retval); session->session_state = VCL_STATE_DETACHED; session->vpp_handle = VCL_INVALID_SESSION_HANDLE; session->vpp_error = mp->retval; return session_index; } session->vpp_handle = mp->handle; /* Add to lookup table. Even if something fails, session cannot be * cleaned up prior to notifying vpp and going through the cleanup * "procedure" see @ref vcl_session_cleanup_handler */ vcl_session_table_add_vpp_handle (wrk, mp->handle, session_index); if (vcl_segment_attach_session ( mp->segment_handle, mp->server_rx_fifo, mp->server_tx_fifo, mp->vpp_event_queue_address, mp->mq_index, 0, session)) { VDBG (0, "session %u [0x%llx]: failed to attach fifos", session->session_index, session->vpp_handle); session->session_state = VCL_STATE_UPDATED; vcl_send_session_disconnect (wrk, session); return session_index; } if (mp->ct_rx_fifo) { if (vcl_segment_attach_session (mp->ct_segment_handle, mp->ct_rx_fifo, mp->ct_tx_fifo, (uword) ~0, ~0, 1, session)) { VDBG (0, "session %u [0x%llx]: failed to attach ct fifos", session->session_index, session->vpp_handle); session->session_state = VCL_STATE_UPDATED; vcl_send_session_disconnect (wrk, session); return session_index; } } session->transport.is_ip4 = mp->lcl.is_ip4; clib_memcpy_fast (&session->transport.lcl_ip, &mp->lcl.ip, sizeof (session->transport.lcl_ip)); session->transport.lcl_port = mp->lcl.port; /* Application closed session before connect reply */ if (vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK) && session->session_state == VCL_STATE_CLOSED) vcl_send_session_disconnect (wrk, session); else session->session_state = VCL_STATE_READY; VDBG (0, "session %u [0x%llx] connected local: %U:%u remote %U:%u", session->session_index, session->vpp_handle, vcl_format_ip46_address, &session->transport.lcl_ip, session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (session->transport.lcl_port), vcl_format_ip46_address, &session->transport.rmt_ip, session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (session->transport.rmt_port)); return session_index; } static int vcl_flag_accepted_session (vcl_session_t * session, u64 handle, u32 flags) { vcl_session_msg_t *accepted_msg; int i; for (i = 0; i < vec_len (session->accept_evts_fifo); i++) { accepted_msg = &session->accept_evts_fifo[i]; if (accepted_msg->accepted_msg.handle == handle) { accepted_msg->flags |= flags; return 1; } } return 0; } static u32 vcl_session_reset_handler (vcl_worker_t * wrk, session_reset_msg_t * reset_msg) { vcl_session_t *session; u32 sid; sid = vcl_session_index_from_vpp_handle (wrk, reset_msg->handle); session = vcl_session_get (wrk, sid); if (!session) { VDBG (0, "request to reset unknown handle 0x%llx", reset_msg->handle); return VCL_INVALID_SESSION_INDEX; } /* Caught a reset before actually accepting the session */ if (session->session_state == VCL_STATE_LISTEN || session->session_state == VCL_STATE_LISTEN_NO_MQ) { if (!vcl_flag_accepted_session (session, reset_msg->handle, VCL_ACCEPTED_F_RESET)) VDBG (0, "session was not accepted!"); return VCL_INVALID_SESSION_INDEX; } if (session->session_state != VCL_STATE_CLOSED) session->session_state = VCL_STATE_DISCONNECT; session->flags |= (VCL_SESSION_F_RD_SHUTDOWN | VCL_SESSION_F_WR_SHUTDOWN); VDBG (0, "session %u [0x%llx]: reset", sid, reset_msg->handle); return sid; } static u32 vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp) { vcl_session_t *session; u32 sid = mp->context; session = vcl_session_get (wrk, sid); if (mp->retval) { VERR ("session %u [0x%llx]: bind failed: %U", sid, mp->handle, format_session_error, mp->retval); if (session) { session->session_state = VCL_STATE_DETACHED; session->vpp_handle = mp->handle; return sid; } else { VDBG (0, "session %u [0x%llx]: Invalid session index!", sid, mp->handle); return VCL_INVALID_SESSION_INDEX; } } session->vpp_handle = mp->handle; session->transport.is_ip4 = mp->lcl_is_ip4; clib_memcpy_fast (&session->transport.lcl_ip, mp->lcl_ip, sizeof (ip46_address_t)); session->transport.lcl_port = mp->lcl_port; vcl_session_table_add_listener (wrk, mp->handle, sid); session->session_state = VCL_STATE_LISTEN; session->flags &= ~VCL_SESSION_F_PENDING_LISTEN; if (vcl_session_is_cl (session)) { if (vcl_segment_attach_session (mp->segment_handle, mp->rx_fifo, mp->tx_fifo, mp->vpp_evt_q, mp->mq_index, 0, session)) { VDBG (0, "session %u [0x%llx]: failed to attach fifos", session->session_index, session->vpp_handle); session->session_state = VCL_STATE_DETACHED; return VCL_INVALID_SESSION_INDEX; } } VDBG (0, "session %u [0x%llx]: listen succeeded!", sid, mp->handle); return sid; } static void vcl_session_unlisten_reply_handler (vcl_worker_t * wrk, void *data) { session_unlisten_reply_msg_t *mp = (session_unlisten_reply_msg_t *) data; vcl_session_t *s; s = vcl_session_get_w_vpp_handle (wrk, mp->handle); if (!s) { VDBG (0, "Unlisten reply with wrong handle %llx", mp->handle); return; } if (s->session_state != VCL_STATE_DISCONNECT) { /* Connected udp listener */ if (s->session_type == VPPCOM_PROTO_UDP && s->session_state == VCL_STATE_CLOSED) return; VDBG (0, "Unlisten session in wrong state %llx", mp->handle); return; } if (mp->retval) VDBG (0, "ERROR: session %u [0xllx]: unlisten failed: %U", s->session_index, mp->handle, format_session_error, mp->retval); if (mp->context != wrk->wrk_index) VDBG (0, "wrong context"); vcl_session_table_del_vpp_handle (wrk, mp->handle); vcl_session_free (wrk, s); } static void vcl_session_migrated_handler (vcl_worker_t * wrk, void *data) { session_migrated_msg_t *mp = (session_migrated_msg_t *) data; vcl_session_t *s; u32 fs_index; s = vcl_session_get_w_vpp_handle (wrk, mp->handle); if (!s) { VDBG (0, "Migrated notification with wrong handle %llx", mp->handle); return; } /* Only validate if a value is provided */ if (mp->segment_handle != SESSION_INVALID_HANDLE) { fs_index = vcl_segment_table_lookup (mp->segment_handle); if (fs_index == VCL_INVALID_SEGMENT_INDEX) { VDBG (0, "segment %lx for session %u is not mounted!", mp->segment_handle, s->session_index); s->session_state = VCL_STATE_DETACHED; return; } } s->vpp_handle = mp->new_handle; vcl_segment_attach_mq (vcl_vpp_worker_segment_handle (0), mp->vpp_evt_q, mp->vpp_thread_index, &s->vpp_evt_q); vcl_session_table_del_vpp_handle (wrk, mp->handle); vcl_session_table_add_vpp_handle (wrk, mp->new_handle, s->session_index); /* Generate new tx event if we have outstanding data */ if (svm_fifo_has_event (s->tx_fifo)) app_send_io_evt_to_vpp (s->vpp_evt_q, s->tx_fifo->shr->master_session_index, SESSION_IO_EVT_TX, SVM_Q_WAIT); VDBG (0, "Migrated 0x%lx to thread %u 0x%lx", mp->handle, mp->vpp_thread_index, mp->new_handle); } static vcl_session_t * vcl_session_accepted (vcl_worker_t * wrk, session_accepted_msg_t * msg) { vcl_session_msg_t *vcl_msg; vcl_session_t *session; session = vcl_session_get_w_vpp_handle (wrk, msg->handle); if (PREDICT_FALSE (session != 0)) VWRN ("session overlap handle %lu state %u!", msg->handle, session->session_state); session = vcl_session_table_lookup_listener (wrk, msg->listener_handle); if (!session) { VERR ("couldn't find listen session: listener handle %llx", msg->listener_handle); return 0; } clib_fifo_add2 (session->accept_evts_fifo, vcl_msg); vcl_msg->flags = 0; vcl_msg->accepted_msg = *msg; /* Session handle points to listener until fully accepted by app */ vcl_session_table_add_vpp_handle (wrk, msg->handle, session->session_index); return session; } static vcl_session_t * vcl_session_disconnected_handler (vcl_worker_t * wrk, session_disconnected_msg_t * msg) { vcl_session_t *session; session = vcl_session_get_w_vpp_handle (wrk, msg->handle); if (!session) { VWRN ("request to disconnect unknown handle 0x%llx", msg->handle); return 0; } /* Late disconnect notification on a session that has been closed */ if (session->session_state == VCL_STATE_CLOSED) return 0; /* Caught a disconnect before actually accepting the session */ if (session->session_state == VCL_STATE_LISTEN || session->session_state == VCL_STATE_LISTEN_NO_MQ) { if (!vcl_flag_accepted_session (session, msg->handle, VCL_ACCEPTED_F_CLOSED)) VDBG (0, "session was not accepted!"); return 0; } /* If not already reset change state */ if (session->session_state != VCL_STATE_DISCONNECT) session->session_state = VCL_STATE_VPP_CLOSING; return session; } int vppcom_session_shutdown (uint32_t session_handle, int how) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *session; vcl_session_state_t state; u64 vpp_handle; session = vcl_session_get_w_handle (wrk, session_handle); if (PREDICT_FALSE (!session)) return VPPCOM_EBADFD; vpp_handle = session->vpp_handle; state = session->session_state; VDBG (1, "session %u [0x%llx] state 0x%x (%s)", session->session_index, vpp_handle, state, vcl_session_state_str (state)); if (PREDICT_FALSE (state == VCL_STATE_LISTEN)) { VDBG (0, "ERROR: Cannot shutdown a listen socket!"); return VPPCOM_EBADFD; } if (how == SHUT_RD || how == SHUT_RDWR) { session->flags |= VCL_SESSION_F_RD_SHUTDOWN; if (how == SHUT_RD) return VPPCOM_OK; } session->flags |= VCL_SESSION_F_WR_SHUTDOWN; if (PREDICT_TRUE (state == VCL_STATE_READY)) { VDBG (1, "session %u [0x%llx]: sending shutdown...", session->session_index, vpp_handle); vcl_send_session_shutdown (wrk, session); } return VPPCOM_OK; } static int vppcom_session_disconnect (u32 session_handle) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *session, *listen_session; vcl_session_state_t state; u64 vpp_handle; session = vcl_session_get_w_handle (wrk, session_handle); if (!session) return VPPCOM_EBADFD; vpp_handle = session->vpp_handle; state = session->session_state; VDBG (1, "session %u [0x%llx]: disconnecting state (%s)", session->session_index, vpp_handle, vcl_session_state_str (state)); if (PREDICT_FALSE (state == VCL_STATE_LISTEN)) { VDBG (0, "ERROR: Cannot disconnect a listen socket!"); return VPPCOM_EBADFD; } if (state == VCL_STATE_VPP_CLOSING) { vcl_send_session_disconnected_reply (wrk, session, 0); VDBG (1, "session %u [0x%llx]: sending disconnect REPLY...", session->session_index, vpp_handle); } else { /* Session doesn't have an event queue yet. Probably a non-blocking * connect. Wait for the reply */ if (PREDICT_FALSE (!session->vpp_evt_q)) return VPPCOM_OK; VDBG (1, "session %u [0x%llx]: sending disconnect", session->session_index, vpp_handle); vcl_send_session_disconnect (wrk, session); } if (session->listener_index != VCL_INVALID_SESSION_INDEX) { listen_session = vcl_session_get (wrk, session->listener_index); if (listen_session) listen_session->n_accepted_sessions--; } return VPPCOM_OK; } static void vcl_session_cleanup_handler (vcl_worker_t * wrk, void *data) { session_cleanup_msg_t *msg; vcl_session_t *session; msg = (session_cleanup_msg_t *) data; session = vcl_session_get_w_vpp_handle (wrk, msg->handle); if (!session) { VWRN ("disconnect confirmed for unknown handle 0x%llx", msg->handle); return; } if (msg->type == SESSION_CLEANUP_TRANSPORT) { /* Transport was cleaned up before we confirmed close. Probably the * app is still waiting for some data that cannot be delivered. * Confirm close to make sure everything is cleaned up. * Move to undetermined state to ensure that the session is not * removed before both vpp and the app cleanup. * - If the app closes first, the session is moved to CLOSED state * and the session cleanup notification from vpp removes the * session. * - If vpp cleans up the session first, the session is moved to * DETACHED state lower and subsequently the close from the app * frees the session */ if (session->session_state == VCL_STATE_VPP_CLOSING) { vppcom_session_disconnect (vcl_session_handle (session)); session->session_state = VCL_STATE_UPDATED; } else if (session->session_state == VCL_STATE_DISCONNECT) { vcl_send_session_reset_reply (wrk, session, 0); session->session_state = VCL_STATE_UPDATED; } return; } /* VPP will reuse the handle so clean it up now */ vcl_session_table_del_vpp_handle (wrk, msg->handle); /* App did not close the connection yet so don't free it. */ if (session->session_state != VCL_STATE_CLOSED) { VDBG (0, "session %u: app did not close", session->session_index); session->session_state = VCL_STATE_DETACHED; session->vpp_handle = VCL_INVALID_SESSION_HANDLE; return; } /* Session probably tracked with epoll, disconnect not yet handled and * 1) both transport and session cleanup completed 2) app closed. Wait * until message is drained to free the session. * See @ref vcl_handle_mq_event */ if (session->flags & VCL_SESSION_F_PENDING_DISCONNECT) { session->flags |= VCL_SESSION_F_PENDING_FREE; return; } vcl_session_free (wrk, session); } static void vcl_session_req_worker_update_handler (vcl_worker_t * wrk, void *data) { session_req_worker_update_msg_t *msg; vcl_session_t *s; msg = (session_req_worker_update_msg_t *) data; s = vcl_session_get_w_vpp_handle (wrk, msg->session_handle); if (!s) return; vec_add1 (wrk->pending_session_wrk_updates, s->session_index); } static void vcl_session_worker_update_reply_handler (vcl_worker_t * wrk, void *data) { session_worker_update_reply_msg_t *msg; vcl_session_t *s; msg = (session_worker_update_reply_msg_t *) data; s = vcl_session_get_w_vpp_handle (wrk, msg->handle); if (!s) { VDBG (0, "unknown handle 0x%llx", msg->handle); return; } if (s->rx_fifo) { if (vcl_segment_attach_session (msg->segment_handle, msg->rx_fifo, msg->tx_fifo, (uword) ~0, ~0, 0, s)) { VDBG (0, "failed to attach fifos for %u", s->session_index); return; } } s->session_state = VCL_STATE_UPDATED; VDBG (0, "session %u[0x%llx] moved to worker %u", s->session_index, s->vpp_handle, wrk->wrk_index); } static int vcl_api_recv_fd (vcl_worker_t * wrk, int *fds, int n_fds) { if (vcm->cfg.vpp_app_socket_api) return vcl_sapi_recv_fds (wrk, fds, n_fds); return vcl_bapi_recv_fds (wrk, fds, n_fds); } static void vcl_session_app_add_segment_handler (vcl_worker_t * wrk, void *data) { ssvm_segment_type_t seg_type = SSVM_SEGMENT_SHM; session_app_add_segment_msg_t *msg; u64 segment_handle; int fd = -1; msg = (session_app_add_segment_msg_t *) data; if (msg->fd_flags) { vcl_api_recv_fd (wrk, &fd, 1); seg_type = SSVM_SEGMENT_MEMFD; } segment_handle = msg->segment_handle; if (segment_handle == VCL_INVALID_SEGMENT_HANDLE) { clib_warning ("invalid segment handle"); return; } if (vcl_segment_attach (segment_handle, (char *) msg->segment_name, seg_type, fd)) { VDBG (0, "vcl_segment_attach ('%s') failed", msg->segment_name); return; } VDBG (1, "mapped new segment '%s' size %d", msg->segment_name, msg->segment_size); } static void vcl_session_app_del_segment_handler (vcl_worker_t * wrk, void *data) { session_app_del_segment_msg_t *msg = (session_app_del_segment_msg_t *) data; vcl_segment_detach (msg->segment_handle); VDBG (1, "Unmapped segment: %lx", msg->segment_handle); } static void vcl_worker_rpc_handler (vcl_worker_t * wrk, void *data) { if (!vcm->wrk_rpc_fn) return; (vcm->wrk_rpc_fn) (((session_app_wrk_rpc_msg_t *) data)->data); } static void vcl_session_transport_attr_reply_handler (vcl_worker_t *wrk, void *data) { session_transport_attr_reply_msg_t *mp; if (!wrk->session_attr_op) return; mp = (session_transport_attr_reply_msg_t *) data; wrk->session_attr_op_rv = mp->retval; wrk->session_attr_op = 0; wrk->session_attr_rv = mp->attr; } static int vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e) { session_disconnected_msg_t *disconnected_msg; session_connected_msg_t *connected_msg; session_reset_msg_t *reset_msg; session_event_t *ecpy; vcl_session_t *s; u32 sid; switch (e->event_type) { case SESSION_IO_EVT_RX: case SESSION_IO_EVT_TX: s = vcl_session_get (wrk, e->session_index); if (!s || !vcl_session_is_open (s)) break; vec_add1 (wrk->unhandled_evts_vector, *e); break; case SESSION_CTRL_EVT_BOUND: /* We can only wait for only one listen so not postponed */ vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data); break; case SESSION_CTRL_EVT_ACCEPTED: s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data); if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK)) { vec_add2 (wrk->unhandled_evts_vector, ecpy, 1); *ecpy = *e; ecpy->postponed = 1; ecpy->session_index = s->session_index; } break; case SESSION_CTRL_EVT_CONNECTED: connected_msg = (session_connected_msg_t *) e->data; sid = vcl_session_connected_handler (wrk, connected_msg); if (!(s = vcl_session_get (wrk, sid))) break; if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK)) { vec_add2 (wrk->unhandled_evts_vector, ecpy, 1); *ecpy = *e; ecpy->postponed = 1; ecpy->session_index = s->session_index; } break; case SESSION_CTRL_EVT_DISCONNECTED: disconnected_msg = (session_disconnected_msg_t *) e->data; if (!(s = vcl_session_get_w_vpp_handle (wrk, disconnected_msg->handle))) break; if (s->session_state == VCL_STATE_CLOSED) break; /* We do not postpone for blocking sessions or listen sessions because: * 1. Blocking sessions are not part of epoll instead they're used in a * synchronous manner, such as read/write and etc. * 2. Listen sessions that have not yet been accepted can't change to * VPP_CLOSING state instead can been marked as ACCEPTED_F_CLOSED. */ if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK) && !(s->session_state == VCL_STATE_LISTEN || s->session_state == VCL_STATE_LISTEN_NO_MQ)) { s->session_state = VCL_STATE_VPP_CLOSING; s->flags |= VCL_SESSION_F_PENDING_DISCONNECT; vec_add2 (wrk->unhandled_evts_vector, ecpy, 1); *ecpy = *e; ecpy->postponed = 1; ecpy->session_index = s->session_index; break; } if (!(s = vcl_session_disconnected_handler (wrk, disconnected_msg))) break; VDBG (0, "disconnected session %u [0x%llx]", s->session_index, s->vpp_handle); break; case SESSION_CTRL_EVT_RESET: reset_msg = (session_reset_msg_t *) e->data; if (!(s = vcl_session_get_w_vpp_handle (wrk, reset_msg->handle))) break; if (s->session_state == VCL_STATE_CLOSED) break; /* We do not postpone for blocking sessions or listen sessions because: * 1. Blocking sessions are not part of epoll instead they're used in a * synchronous manner, such as read/write and etc. * 2. Listen sessions that have not yet been accepted can't change to * DISCONNECT state instead can been marked as ACCEPTED_F_RESET. */ if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK) && !(s->session_state == VCL_STATE_LISTEN || s->session_state == VCL_STATE_LISTEN_NO_MQ)) { s->flags |= VCL_SESSION_F_PENDING_DISCONNECT; s->session_state = VCL_STATE_DISCONNECT; s->flags |= (VCL_SESSION_F_RD_SHUTDOWN | VCL_SESSION_F_WR_SHUTDOWN); vec_add2 (wrk->unhandled_evts_vector, ecpy, 1); *ecpy = *e; ecpy->postponed = 1; ecpy->session_index = s->session_index; break; } vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data); break; case SESSION_CTRL_EVT_UNLISTEN_REPLY: vcl_session_unlisten_reply_handler (wrk, e->data); break; case SESSION_CTRL_EVT_MIGRATED: vcl_session_migrated_handler (wrk, e->data); break; case SESSION_CTRL_EVT_CLEANUP: vcl_session_cleanup_handler (wrk, e->data); break; case SESSION_CTRL_EVT_REQ_WORKER_UPDATE: vcl_session_req_worker_update_handler (wrk, e->data); break; case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY: vcl_session_worker_update_reply_handler (wrk, e->data); break; case SESSION_CTRL_EVT_APP_ADD_SEGMENT: vcl_session_app_add_segment_handler (wrk, e->data); break; case SESSION_CTRL_EVT_APP_DEL_SEGMENT: vcl_session_app_del_segment_handler (wrk, e->data); break; case SESSION_CTRL_EVT_APP_WRK_RPC: vcl_worker_rpc_handler (wrk, e->data); break; case SESSION_CTRL_EVT_TRANSPORT_ATTR_REPLY: vcl_session_transport_attr_reply_handler (wrk, e->data); break; default: clib_warning ("unhandled %u", e->event_type); } return VPPCOM_OK; } static int vppcom_wait_for_session_state_change (u32 session_index, vcl_session_state_t state, f64 wait_for_time) { vcl_worker_t *wrk = vcl_worker_get_current (); f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time; vcl_session_t *volatile session; svm_msg_q_msg_t msg; session_event_t *e; do { session = vcl_session_get (wrk, session_index); if (PREDICT_FALSE (!session)) { return VPPCOM_EBADFD; } if (session->session_state == state) { return VPPCOM_OK; } if (session->session_state == VCL_STATE_DETACHED) { return VPPCOM_ECONNREFUSED; } if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0)) { usleep (100); continue; } e = svm_msg_q_msg_data (wrk->app_event_queue, &msg); vcl_handle_mq_event (wrk, e); svm_msg_q_free_msg (wrk->app_event_queue, &msg); } while (clib_time_now (&wrk->clib_time) < timeout); VDBG (0, "timeout waiting for state 0x%x (%s)", state, vcl_session_state_str (state)); vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state); return VPPCOM_ETIMEDOUT; } static void vcl_handle_pending_wrk_updates (vcl_worker_t * wrk) { vcl_session_state_t state; vcl_session_t *s; u32 *sip; if (PREDICT_TRUE (vec_len (wrk->pending_session_wrk_updates) == 0)) return; vec_foreach (sip, wrk->pending_session_wrk_updates) { s = vcl_session_get (wrk, *sip); vcl_send_session_worker_update (wrk, s, wrk->wrk_index); state = s->session_state; vppcom_wait_for_session_state_change (s->session_index, VCL_STATE_UPDATED, 5); s->session_state = state; } vec_reset_length (wrk->pending_session_wrk_updates); } void vcl_worker_flush_mq_events (vcl_worker_t *wrk) { svm_msg_q_msg_t *msg; session_event_t *e; svm_msg_q_t *mq; int i; mq = wrk->app_event_queue; vcl_mq_dequeue_batch (wrk, mq, ~0); for (i = 0; i < vec_len (wrk->mq_msg_vector); i++) { msg = vec_elt_at_index (wrk->mq_msg_vector, i); e = svm_msg_q_msg_data (mq, msg); vcl_handle_mq_event (wrk, e); svm_msg_q_free_msg (mq, msg); } vec_reset_length (wrk->mq_msg_vector); vcl_handle_pending_wrk_updates (wrk); } void vcl_flush_mq_events (void) { vcl_worker_flush_mq_events (vcl_worker_get_current ()); } static int vppcom_session_unbind (u32 session_handle) { vcl_worker_t *wrk = vcl_worker_get_current (); session_accepted_msg_t *accepted_msg; vcl_session_t *session = 0; vcl_session_msg_t *evt; session = vcl_session_get_w_handle (wrk, session_handle); if (!session) return VPPCOM_EBADFD; /* Flush pending accept events, if any */ while (clib_fifo_elts (session->accept_evts_fifo)) { clib_fifo_sub2 (session->accept_evts_fifo, evt); accepted_msg = &evt->accepted_msg; vcl_session_table_del_vpp_handle (wrk, accepted_msg->handle); vcl_send_session_accepted_reply (session->vpp_evt_q, accepted_msg->context, accepted_msg->handle, -1); } clib_fifo_free (session->accept_evts_fifo); vcl_send_session_unlisten (wrk, session); VDBG (0, "session %u [0x%llx]: sending unbind!", session->session_index, session->vpp_handle); vcl_evt (VCL_EVT_UNBIND, session); session->vpp_handle = ~0; session->session_state = VCL_STATE_DISCONNECT; return VPPCOM_OK; } /** * Handle app exit * * Notify vpp of the disconnect and mark the worker as free. If we're the * last worker, do a full cleanup otherwise, since we're probably a forked * child, avoid syscalls as much as possible. We might've lost privileges. */ void vppcom_app_exit (void) { if (!pool_elts (vcm->workers)) return; vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ ); vcl_set_worker_index (~0); vcl_elog_stop (vcm); } static int vcl_api_attach (void) { if (vcm->cfg.vpp_app_socket_api) return vcl_sapi_attach (); return vcl_bapi_attach (); } int vcl_is_first_reattach_to_execute () { if (vcm->reattach_count == 0) return 1; return 0; } void vcl_set_reattach_counter () { ++vcm->reattach_count; if (vcm->reattach_count == vec_len (vcm->workers)) vcm->reattach_count = 0; } /** * Reattach vcl to vpp after it has previously been disconnected. * * The logic should be: * - first worker to hit `vcl_api_retry_attach` should attach to vpp, * to reproduce the `vcl_api_attach` in `vppcom_app_create`. * - the rest of the workers should `reproduce vcl_worker_register_with_vpp` * from `vppcom_worker_register` since they were already allocated. */ static void vcl_api_retry_attach (vcl_worker_t *wrk) { vcl_session_t *s; clib_spinlock_lock (&vcm->workers_lock); if (vcl_is_first_reattach_to_execute ()) { if (vcl_api_attach ()) { clib_spinlock_unlock (&vcm->workers_lock); return; } vcl_set_reattach_counter (); clib_spinlock_unlock (&vcm->workers_lock); } else { vcl_set_reattach_counter (); clib_spinlock_unlock (&vcm->workers_lock); vcl_worker_register_with_vpp (); } /* Treat listeners as configuration that needs to be re-added to vpp */ pool_foreach (s, wrk->sessions) { if (s->flags & VCL_SESSION_F_IS_VEP) continue; if (s->session_state == VCL_STATE_LISTEN_NO_MQ) vppcom_session_listen (vcl_session_handle (s), 10); else VDBG (0, "internal error: unexpected state %d", s->session_state); } } static void vcl_api_handle_disconnect (vcl_worker_t *wrk) { wrk->api_client_handle = ~0; vcl_worker_detach_sessions (wrk); } static void vcl_api_detach (vcl_worker_t * wrk) { if (wrk->api_client_handle == ~0) return; vcl_send_app_detach (wrk); if (vcm->cfg.vpp_app_socket_api) return vcl_sapi_detach (wrk); return vcl_bapi_disconnect_from_vpp (); } /* * VPPCOM Public API functions */ int vppcom_app_create (const char *app_name) { vppcom_cfg_t *vcl_cfg = &vcm->cfg; int rv; if (vcm->is_init) { VDBG (1, "already initialized"); return VPPCOM_EEXIST; } vcm->is_init = 1; vppcom_cfg (&vcm->cfg); vcl_cfg = &vcm->cfg; vcm->main_cpu = pthread_self (); vcm->main_pid = getpid (); vcm->app_name = format (0, "%s", app_name); fifo_segment_main_init (&vcm->segment_main, (uword) ~0, 20 /* timeout in secs */); pool_alloc (vcm->workers, vcl_cfg->max_workers); clib_spinlock_init (&vcm->workers_lock); clib_rwlock_init (&vcm->segment_table_lock); atexit (vppcom_app_exit); vcl_elog_init (vcm); /* Allocate default worker */ vcl_worker_alloc_and_init (); if ((rv = vcl_api_attach ())) { vppcom_app_destroy (); return rv; } VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name, vcm->workers[0].api_client_handle, vcm->workers[0].api_client_handle); return VPPCOM_OK; } void vppcom_app_destroy (void) { vcl_worker_t *wrk, *current_wrk; void *heap; if (!pool_elts (vcm->workers)) return; vcl_evt (VCL_EVT_DETACH, vcm); current_wrk = vcl_worker_get_current (); /* *INDENT-OFF* */ pool_foreach (wrk, vcm->workers) { if (current_wrk != wrk) vcl_worker_cleanup (wrk, 0 /* notify vpp */ ); } /* *INDENT-ON* */ vcl_api_detach (current_wrk); vcl_worker_cleanup (current_wrk, 0 /* notify vpp */ ); vcl_set_worker_index (~0); vcl_elog_stop (vcm); /* * Free the heap and fix vcm */ heap = clib_mem_get_heap (); munmap (clib_mem_get_heap_base (heap), clib_mem_get_heap_size (heap)); vcm = &_vppcom_main; vcm->is_init = 0; } int vppcom_session_create (u8 proto, u8 is_nonblocking) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *session; session = vcl_session_alloc (wrk); session->session_type = proto; session->session_state = VCL_STATE_CLOSED; session->vpp_handle = ~0; session->is_dgram = vcl_proto_is_dgram (proto); session->vpp_error = SESSION_E_NONE; if (is_nonblocking) vcl_session_set_attr (session, VCL_SESS_ATTR_NONBLOCK); vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state, is_nonblocking, session_index); VDBG (0, "created session %u", session->session_index); return vcl_session_handle (session); } static void vcl_epoll_lt_add (vcl_worker_t *wrk, vcl_session_t *s) { vcl_session_t *cur, *prev; ASSERT (s->vep.lt_next == VCL_INVALID_SESSION_INDEX); if (wrk->ep_lt_current == VCL_INVALID_SESSION_INDEX) { wrk->ep_lt_current = s->session_index; s->vep.lt_next = s->session_index; s->vep.lt_prev = s->session_index; return; } cur = vcl_session_get (wrk, wrk->ep_lt_current); prev = vcl_session_get (wrk, cur->vep.lt_prev); prev->vep.lt_next = s->session_index; s->vep.lt_prev = prev->session_index; s->vep.lt_next = cur->session_index; cur->vep.lt_prev = s->session_index; } static void vcl_epoll_lt_del (vcl_worker_t *wrk, vcl_session_t *s) { vcl_session_t *prev, *next; ASSERT (s->vep.lt_next != VCL_INVALID_SESSION_INDEX); if (s->vep.lt_next == s->session_index) { wrk->ep_lt_current = VCL_INVALID_SESSION_INDEX; s->vep.lt_next = VCL_INVALID_SESSION_INDEX; s->vep.lt_prev = VCL_INVALID_SESSION_INDEX; return; } prev = vcl_session_get (wrk, s->vep.lt_prev); next = vcl_session_get (wrk, s->vep.lt_next); prev->vep.lt_next = next->session_index; next->vep.lt_prev = prev->session_index; if (s->session_index == wrk->ep_lt_current) wrk->ep_lt_current = s->vep.lt_next; s->vep.lt_next = VCL_INVALID_SESSION_INDEX; s->vep.lt_prev = VCL_INVALID_SESSION_INDEX; } int vcl_session_cleanup (vcl_worker_t * wrk, vcl_session_t * s, vcl_session_handle_t sh, u8 do_disconnect) { int rv = VPPCOM_OK; VDBG (1, "session %u [0x%llx] closing", s->session_index, s->vpp_handle); if (s->flags & VCL_SESSION_F_IS_VEP) { u32 next_sh = s->vep.next_sh; while (next_sh != ~0) { rv = vppcom_epoll_ctl (sh, EPOLL_CTL_DEL, next_sh, 0); if (PREDICT_FALSE (rv < 0)) VDBG (0, "vpp handle 0x%llx, sh %u: EPOLL_CTL_DEL vep_idx %u" " failed! rv %d (%s)", s->vpp_handle, next_sh, s->vep.vep_sh, rv, vppcom_retval_str (rv)); next_sh = s->vep.next_sh; } goto free_session; } if (s->flags & VCL_SESSION_F_IS_VEP_SESSION) { rv = vppcom_epoll_ctl (s->vep.vep_sh, EPOLL_CTL_DEL, sh, 0); if (rv < 0) VDBG (0, "session %u [0x%llx]: EPOLL_CTL_DEL vep_idx %u " "failed! rv %d (%s)", s->session_index, s->vpp_handle, s->vep.vep_sh, rv, vppcom_retval_str (rv)); } if (!do_disconnect) { VDBG (1, "session %u [0x%llx] disconnect skipped", s->session_index, s->vpp_handle); goto cleanup; } if (s->session_state == VCL_STATE_LISTEN) { rv = vppcom_session_unbind (sh); if (PREDICT_FALSE (rv < 0)) VDBG (0, "session %u [0x%llx]: listener unbind failed! " "rv %d (%s)", s->session_index, s->vpp_handle, rv, vppcom_retval_str (rv)); return rv; } else if (vcl_session_is_ready (s) || (vcl_session_is_connectable_listener (wrk, s))) { rv = vppcom_session_disconnect (sh); if (PREDICT_FALSE (rv < 0)) VDBG (0, "ERROR: session %u [0x%llx]: disconnect failed!" " rv %d (%s)", s->session_index, s->vpp_handle, rv, vppcom_retval_str (rv)); } else if (s->session_state == VCL_STATE_DISCONNECT) { vcl_send_session_reset_reply (wrk, s, 0); } else if (s->session_state == VCL_STATE_DETACHED) { VDBG (0, "vpp freed session %d before close", s->session_index); if (!(s->flags & VCL_SESSION_F_PENDING_DISCONNECT)) goto free_session; /* Disconnect/reset messages pending but vpp transport and session * cleanups already done. Free only after messages drained. */ s->flags |= VCL_SESSION_F_PENDING_FREE; } s->session_state = VCL_STATE_CLOSED; /* Session is removed only after vpp confirms the disconnect */ return rv; cleanup: vcl_session_table_del_vpp_handle (wrk, s->vpp_handle); free_session: vcl_session_free (wrk, s); vcl_evt (VCL_EVT_CLOSE, s, rv); return rv; } int vppcom_session_close (uint32_t session_handle) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *session; session = vcl_session_get_w_handle (wrk, session_handle); if (!session) return VPPCOM_EBADFD; return vcl_session_cleanup (wrk, session, session_handle, 1 /* do_disconnect */ ); } int vppcom_session_bind (uint32_t session_handle, vppcom_endpt_t * ep) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *session = 0; if (!ep || !ep->ip) return VPPCOM_EINVAL; session = vcl_session_get_w_handle (wrk, session_handle); if (!session) return VPPCOM_EBADFD; if (session->flags & VCL_SESSION_F_IS_VEP) { VDBG (0, "ERROR: cannot bind to epoll session %u!", session->session_index); return VPPCOM_EBADFD; } session->transport.is_ip4 = ep->is_ip4; if (ep->is_ip4) clib_memcpy_fast (&session->transport.lcl_ip.ip4, ep->ip, sizeof (ip4_address_t)); else clib_memcpy_fast (&session->transport.lcl_ip.ip6, ep->ip, sizeof (ip6_address_t)); session->transport.lcl_port = ep->port; VDBG (0, "session %u handle %u: binding to local %s address %U port %u, " "proto %s", session->session_index, session_handle, session->transport.is_ip4 ? "IPv4" : "IPv6", vcl_format_ip46_address, &session->transport.lcl_ip, session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (session->transport.lcl_port), vppcom_proto_str (session->session_type)); vcl_evt (VCL_EVT_BIND, session); if (session->session_type == VPPCOM_PROTO_UDP) vppcom_session_listen (session_handle, 10); return VPPCOM_OK; } int vppcom_session_listen (uint32_t listen_sh, uint32_t q_len) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *listen_session = 0; u64 listen_vpp_handle; int rv; listen_session = vcl_session_get_w_handle (wrk, listen_sh); if (!listen_session || (listen_session->flags & VCL_SESSION_F_IS_VEP)) return VPPCOM_EBADFD; listen_vpp_handle = listen_session->vpp_handle; if (listen_session->session_state == VCL_STATE_LISTEN) { VDBG (0, "session %u [0x%llx]: already in listen state!", listen_sh, listen_vpp_handle); return VPPCOM_OK; } VDBG (0, "session %u: sending vpp listen request...", listen_sh); /* * Send listen request to vpp and wait for reply */ vcl_send_session_listen (wrk, listen_session); rv = vppcom_wait_for_session_state_change (listen_session->session_index, VCL_STATE_LISTEN, vcm->cfg.session_timeout); if (PREDICT_FALSE (rv)) { listen_session = vcl_session_get_w_handle (wrk, listen_sh); VDBG (0, "session %u [0x%llx]: listen failed! returning %d (%s)", listen_sh, listen_session->vpp_handle, rv, vppcom_retval_str (rv)); return rv; } return VPPCOM_OK; } int vppcom_unformat_proto (uint8_t * proto, char *proto_str) { if (!strcmp (proto_str, "TCP")) *proto = VPPCOM_PROTO_TCP; else if (!strcmp (proto_str, "tcp")) *proto = VPPCOM_PROTO_TCP; else if (!strcmp (proto_str, "UDP")) *proto = VPPCOM_PROTO_UDP; else if (!strcmp (proto_str, "udp")) *proto = VPPCOM_PROTO_UDP; else if (!strcmp (proto_str, "TLS")) *proto = VPPCOM_PROTO_TLS; else if (!strcmp (proto_str, "tls")) *proto = VPPCOM_PROTO_TLS; else if (!strcmp (proto_str, "QUIC")) *proto = VPPCOM_PROTO_QUIC; else if (!strcmp (proto_str, "quic")) *proto = VPPCOM_PROTO_QUIC; else if (!strcmp (proto_str, "DTLS")) *proto = VPPCOM_PROTO_DTLS; else if (!strcmp (proto_str, "dtls")) *proto = VPPCOM_PROTO_DTLS; else if (!strcmp (proto_str, "SRTP")) *proto = VPPCOM_PROTO_SRTP; else if (!strcmp (proto_str, "srtp")) *proto = VPPCOM_PROTO_SRTP; else return 1; return 0; } int vppcom_session_accept (uint32_t ls_handle, vppcom_endpt_t *ep, uint32_t flags) { u32 client_session_index = ~0, ls_index, accept_flags = 0; vcl_worker_t *wrk = vcl_worker_get_current (); session_accepted_msg_t accepted_msg; vcl_session_t *ls, *client_session = 0; vcl_session_msg_t *evt; u8 is_nonblocking; again: ls = vcl_session_get_w_handle (wrk, ls_handle); if (!ls) return VPPCOM_EBADFD; if ((ls->session_state != VCL_STATE_LISTEN) && (ls->session_state != VCL_STATE_LISTEN_NO_MQ) && (!vcl_session_is_connectable_listener (wrk, ls))) { VDBG (0, "ERROR: session [0x%llx]: not in listen state! state (%s)", ls->vpp_handle, vcl_session_state_str (ls->session_state)); return VPPCOM_EBADFD; } ls_index = ls->session_index; if (clib_fifo_elts (ls->accept_evts_fifo)) { clib_fifo_sub2 (ls->accept_evts_fifo, evt); accept_flags = evt->flags; accepted_msg = evt->accepted_msg; goto handle; } is_nonblocking = vcl_session_has_attr (ls, VCL_SESS_ATTR_NONBLOCK); while (1) { if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking) return VPPCOM_EAGAIN; svm_msg_q_wait (wrk->app_event_queue, SVM_MQ_WAIT_EMPTY); vcl_worker_flush_mq_events (wrk); goto again; } handle: client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg, ls_index); if (client_session_index == VCL_INVALID_SESSION_INDEX) return VPPCOM_ECONNABORTED; ls = vcl_session_get (wrk, ls_index); client_session = vcl_session_get (wrk, client_session_index); if (flags & O_NONBLOCK) vcl_session_set_attr (client_session, VCL_SESS_ATTR_NONBLOCK); VDBG (1, "listener %u [0x%llx]: Got a connect request! session %u [0x%llx]," " flags %d, is_nonblocking %u", ls->session_index, ls->vpp_handle, client_session_index, client_session->vpp_handle, flags, vcl_session_has_attr (client_session, VCL_SESS_ATTR_NONBLOCK)); if (ep) { ep->is_ip4 = client_session->transport.is_ip4; ep->port = client_session->transport.rmt_port; if (client_session->transport.is_ip4) clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy_fast (ep->ip, &client_session->transport.rmt_ip.ip6, sizeof (ip6_address_t)); } VDBG (0, "listener %u [0x%llx] accepted %u [0x%llx] peer: %U:%u " "local: %U:%u", ls_handle, ls->vpp_handle, client_session_index, client_session->vpp_handle, vcl_format_ip46_address, &client_session->transport.rmt_ip, client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (client_session->transport.rmt_port), vcl_format_ip46_address, &client_session->transport.lcl_ip, client_session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (client_session->transport.lcl_port)); vcl_evt (VCL_EVT_ACCEPT, client_session, ls, client_session_index); /* * Session might have been closed already */ if (accept_flags) { if (accept_flags & VCL_ACCEPTED_F_CLOSED) client_session->session_state = VCL_STATE_VPP_CLOSING; else if (accept_flags & VCL_ACCEPTED_F_RESET) client_session->session_state = VCL_STATE_DISCONNECT; } return vcl_session_handle (client_session); } int vppcom_session_connect (uint32_t session_handle, vppcom_endpt_t * server_ep) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *session = 0; u32 session_index; int rv; session = vcl_session_get_w_handle (wrk, session_handle); if (!session) return VPPCOM_EBADFD; session_index = session->session_index; if (PREDICT_FALSE (session->flags & VCL_SESSION_F_IS_VEP)) { VWRN ("cannot connect epoll session %u!", session->session_index); return VPPCOM_EBADFD; } if (PREDICT_FALSE (vcl_session_is_ready (session))) { VDBG (0, "session %u [0x%llx]: already connected to %U:%d proto %s," " state (%s)", session->session_index, session->vpp_handle, vcl_format_ip46_address, &session->transport.rmt_ip, session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (session->transport.rmt_port), vppcom_proto_str (session->session_type), vcl_session_state_str (session->session_state)); return VPPCOM_OK; } /* Attempt to connect a connectionless listener */ if (PREDICT_FALSE (session->session_state == VCL_STATE_LISTEN)) { if (session->session_type != VPPCOM_PROTO_UDP) return VPPCOM_EINVAL; vcl_send_session_unlisten (wrk, session); session->session_state = VCL_STATE_CLOSED; } session->transport.is_ip4 = server_ep->is_ip4; vcl_ip_copy_from_ep (&session->transport.rmt_ip, server_ep); session->transport.rmt_port = server_ep->port; session->parent_handle = VCL_INVALID_SESSION_HANDLE; session->flags |= VCL_SESSION_F_CONNECTED; VDBG (0, "session %u: connecting to peer %U:%d proto %s", session->session_index, vcl_format_ip46_address, &session->transport.rmt_ip, session->transport.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (session->transport.rmt_port), vppcom_proto_str (session->session_type)); vcl_send_session_connect (wrk, session); if (vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK)) { /* State set to STATE_UPDATED to ensure the session is not assumed * to be ready and to also allow the app to close it prior to vpp's * connected reply. */ session->session_state = VCL_STATE_UPDATED; return VPPCOM_EINPROGRESS; } /* * Wait for reply from vpp if blocking */ rv = vppcom_wait_for_session_state_change (session_index, VCL_STATE_READY, vcm->cfg.session_timeout); session = vcl_session_get (wrk, session_index); VDBG (0, "session %u [0x%llx]: connect %s!", session->session_index, session->vpp_handle, rv ? "failed" : "succeeded"); return rv; } int vppcom_session_stream_connect (uint32_t session_handle, uint32_t parent_session_handle) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *session, *parent_session; u32 session_index, parent_session_index; int rv; session = vcl_session_get_w_handle (wrk, session_handle); if (!session) return VPPCOM_EBADFD; parent_session = vcl_session_get_w_handle (wrk, parent_session_handle); if (!parent_session) return VPPCOM_EBADFD; session_index = session->session_index; parent_session_index = parent_session->session_index; if (PREDICT_FALSE (session->flags & VCL_SESSION_F_IS_VEP)) { VDBG (0, "ERROR: cannot connect epoll session %u!", session->session_index); return VPPCOM_EBADFD; } if (PREDICT_FALSE (vcl_session_is_ready (session))) { VDBG (0, "session handle %u [0x%llx]: session already " "connected to session %u [0x%llx] proto %s, state 0x%x (%s)", session_handle, session->vpp_handle, parent_session_handle, parent_session->vpp_handle, vppcom_proto_str (session->session_type), session->session_state, vcl_session_state_str (session->session_state)); return VPPCOM_OK; } /* Connect to quic session specifics */ session->transport.is_ip4 = parent_session->transport.is_ip4; session->transport.rmt_ip.ip4.as_u32 = (uint32_t) 1; session->transport.rmt_port = 0; session->parent_handle = parent_session->vpp_handle; VDBG (0, "session handle %u: connecting to session %u [0x%llx]", session_handle, parent_session_handle, parent_session->vpp_handle); /* * Send connect request and wait for reply from vpp */ vcl_send_session_connect (wrk, session); rv = vppcom_wait_for_session_state_change (session_index, VCL_STATE_READY, vcm->cfg.session_timeout); session->listener_index = parent_session_index; parent_session = vcl_session_get_w_handle (wrk, parent_session_handle); if (parent_session) parent_session->n_accepted_sessions++; session = vcl_session_get (wrk, session_index); VDBG (0, "session %u [0x%llx]: connect %s!", session->session_index, session->vpp_handle, rv ? "failed" : "succeeded"); return rv; } static inline int vppcom_session_read_internal (uint32_t session_handle, void *buf, int n, u8 peek) { vcl_worker_t *wrk = vcl_worker_get_current (); int rv, n_read = 0, is_nonblocking; vcl_session_t *s = 0; svm_fifo_t *rx_fifo; session_event_t *e; svm_msg_q_t *mq; u8 is_ct; if (PREDICT_FALSE (!buf)) return VPPCOM_EFAULT; s = vcl_session_get_w_handle (wrk, session_handle); if (PREDICT_FALSE (!s || (s->flags & VCL_SESSION_F_IS_VEP))) return VPPCOM_EBADFD; if (PREDICT_FALSE (!vcl_session_is_open (s))) { VDBG (0, "session %u[0x%llx] is not open! state 0x%x (%s)", s->session_index, s->vpp_handle, s->session_state, vcl_session_state_str (s->session_state)); return vcl_session_closed_error (s); } if (PREDICT_FALSE (s->flags & VCL_SESSION_F_RD_SHUTDOWN)) { /* Vpp would ack the incoming data and enqueue it for reading. * So even if SHUT_RD is set, we can still read() the data if * the session is ready. */ if (!vcl_session_read_ready (s)) { return 0; } } is_nonblocking = vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK); is_ct = vcl_session_is_ct (s); mq = wrk->app_event_queue; rx_fifo = is_ct ? s->ct_rx_fifo : s->rx_fifo; s->flags &= ~VCL_SESSION_F_HAS_RX_EVT; if (svm_fifo_is_empty_cons (rx_fifo)) { if (is_nonblocking) { if (vcl_session_is_closing (s)) return vcl_session_closing_error (s); if (is_ct) svm_fifo_unset_event (s->rx_fifo); svm_fifo_unset_event (rx_fifo); return VPPCOM_EWOULDBLOCK; } while (svm_fifo_is_empty_cons (rx_fifo)) { if (vcl_session_is_closing (s)) return vcl_session_closing_error (s); if (is_ct) svm_fifo_unset_event (s->rx_fifo); svm_fifo_unset_event (rx_fifo); svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY); vcl_worker_flush_mq_events (wrk); } } read_again: if (s->is_dgram) rv = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek); else rv = app_recv_stream_raw (rx_fifo, buf, n, 0, peek); ASSERT (rv >= 0); if (peek) return rv; n_read += rv; if (svm_fifo_is_empty_cons (rx_fifo)) { if (is_ct) svm_fifo_unset_event (s->rx_fifo); svm_fifo_unset_event (rx_fifo); if (!svm_fifo_is_empty_cons (rx_fifo) && svm_fifo_set_event (rx_fifo) && is_nonblocking) { vec_add2 (wrk->unhandled_evts_vector, e, 1); e->event_type = SESSION_IO_EVT_RX; e->session_index = s->session_index; } } else if (PREDICT_FALSE (rv < n && !s->is_dgram)) { /* More data enqueued while reading. Try to drain it * or fill the buffer. Avoid doing that for dgrams */ buf += rv; n -= rv; goto read_again; } if (PREDICT_FALSE (svm_fifo_needs_deq_ntf (rx_fifo, n_read))) { svm_fifo_clear_deq_ntf (rx_fifo); app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo->shr->master_session_index, SESSION_IO_EVT_RX, SVM_Q_WAIT); } VDBG (2, "session %u[0x%llx]: read %d bytes from (%p)", s->session_index, s->vpp_handle, n_read, rx_fifo); return n_read; } int vppcom_session_read (uint32_t session_handle, void *buf, size_t n) { return (vppcom_session_read_internal (session_handle, buf, n, 0)); } static int vppcom_session_peek (uint32_t session_handle, void *buf, int n) { return (vppcom_session_read_internal (session_handle, buf, n, 1)); } int vppcom_session_read_segments (uint32_t session_handle, vppcom_data_segment_t * ds, uint32_t n_segments, uint32_t max_bytes) { vcl_worker_t *wrk = vcl_worker_get_current (); int n_read = 0, is_nonblocking; vcl_session_t *s = 0; svm_fifo_t *rx_fifo; svm_msg_q_t *mq; u8 is_ct; s = vcl_session_get_w_handle (wrk, session_handle); if (PREDICT_FALSE (!s || (s->flags & VCL_SESSION_F_IS_VEP))) return VPPCOM_EBADFD; if (PREDICT_FALSE (!vcl_session_is_open (s))) return vcl_session_closed_error (s); is_nonblocking = vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK); is_ct = vcl_session_is_ct (s); mq = wrk->app_event_queue; rx_fifo = is_ct ? s->ct_rx_fifo : s->rx_fifo; s->flags &= ~VCL_SESSION_F_HAS_RX_EVT; if (svm_fifo_is_empty_cons (rx_fifo)) { if (is_nonblocking) { if (is_ct) svm_fifo_unset_event (s->rx_fifo); svm_fifo_unset_event (rx_fifo); return VPPCOM_EWOULDBLOCK; } while (svm_fifo_is_empty_cons (rx_fifo)) { if (vcl_session_is_closing (s)) return vcl_session_closing_error (s); if (is_ct) svm_fifo_unset_event (s->rx_fifo); svm_fifo_unset_event (rx_fifo); svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY); vcl_worker_flush_mq_events (wrk); } } n_read = svm_fifo_segments (rx_fifo, s->rx_bytes_pending, (svm_fifo_seg_t *) ds, &n_segments, max_bytes); if (n_read < 0) return VPPCOM_EAGAIN; if (svm_fifo_max_dequeue_cons (rx_fifo) == n_read) { if (is_ct) svm_fifo_unset_event (s->rx_fifo); svm_fifo_unset_event (rx_fifo); if (svm_fifo_max_dequeue_cons (rx_fifo) != n_read && svm_fifo_set_event (rx_fifo) && vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK)) { session_event_t *e; vec_add2 (wrk->unhandled_evts_vector, e, 1); e->event_type = SESSION_IO_EVT_RX; e->session_index = s->session_index; } } s->rx_bytes_pending += n_read; return n_read; } void vppcom_session_free_segments (uint32_t session_handle, uint32_t n_bytes) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *s; u8 is_ct; s = vcl_session_get_w_handle (wrk, session_handle); if (PREDICT_FALSE (!s || (s->flags & VCL_SESSION_F_IS_VEP))) return; is_ct = vcl_session_is_ct (s); svm_fifo_dequeue_drop (is_ct ? s->ct_rx_fifo : s->rx_fifo, n_bytes); ASSERT (s->rx_bytes_pending >= n_bytes); s->rx_bytes_pending -= n_bytes; } always_inline u8 vcl_fifo_is_writeable (svm_fifo_t * f, u32 len, u8 is_dgram) { u32 max_enq = svm_fifo_max_enqueue_prod (f); if (is_dgram) return max_enq >= (sizeof (session_dgram_hdr_t) + len); else return max_enq > 0; } always_inline int vppcom_session_write_inline (vcl_worker_t *wrk, vcl_session_t *s, void *buf, size_t n, u8 is_flush, u8 is_dgram) { int n_write, is_nonblocking; session_evt_type_t et; svm_fifo_t *tx_fifo; svm_msg_q_t *mq; u8 is_ct; /* Accept zero length writes but just return */ if (PREDICT_FALSE (!n)) return VPPCOM_OK; if (PREDICT_FALSE (!buf)) return VPPCOM_EFAULT; if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP)) { VDBG (0, "ERROR: session %u [0x%llx]: cannot write to an epoll" " session!", s->session_index, s->vpp_handle); return VPPCOM_EBADFD; } if (PREDICT_FALSE (!vcl_session_is_open (s))) { VDBG (1, "session %u [0x%llx]: is not open! state 0x%x (%s)", s->session_index, s->vpp_handle, s->session_state, vcl_session_state_str (s->session_state)); return vcl_session_closed_error (s);; } if (PREDICT_FALSE (s->flags & VCL_SESSION_F_WR_SHUTDOWN)) { VDBG (1, "session %u [0x%llx]: is shutdown! state 0x%x (%s)", s->session_index, s->vpp_handle, s->session_state, vcl_session_state_str (s->session_state)); return VPPCOM_EPIPE; } is_ct = vcl_session_is_ct (s); tx_fifo = is_ct ? s->ct_tx_fifo : s->tx_fifo; is_nonblocking = vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK); mq = wrk->app_event_queue; if (!vcl_fifo_is_writeable (tx_fifo, n, is_dgram)) { if (is_nonblocking) { return VPPCOM_EWOULDBLOCK; } while (!vcl_fifo_is_writeable (tx_fifo, n, is_dgram)) { svm_fifo_add_want_deq_ntf (tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF); if (vcl_session_is_closing (s)) return vcl_session_closing_error (s); svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY); vcl_worker_flush_mq_events (wrk); } } et = SESSION_IO_EVT_TX; if (is_flush && !is_ct) et = SESSION_IO_EVT_TX_FLUSH; if (is_dgram) { et = vcl_session_dgram_tx_evt (s, et); n_write = app_send_dgram_raw_gso (tx_fifo, &s->transport, s->vpp_evt_q, buf, n, s->gso_size, et, 0 /* do_evt */, SVM_Q_WAIT); } else { n_write = app_send_stream_raw (tx_fifo, s->vpp_evt_q, buf, n, et, 0 /* do_evt */, SVM_Q_WAIT); } if (svm_fifo_set_event (s->tx_fifo)) app_send_io_evt_to_vpp ( s->vpp_evt_q, s->tx_fifo->shr->master_session_index, et, SVM_Q_WAIT); /* The underlying fifo segment can run out of memory */ if (PREDICT_FALSE (n_write < 0)) return VPPCOM_EAGAIN; VDBG (2, "session %u [0x%llx]: wrote %d bytes", s->session_index, s->vpp_handle, n_write); return n_write; } int vppcom_session_write (uint32_t session_handle, void *buf, size_t n) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *s; s = vcl_session_get_w_handle (wrk, session_handle); if (PREDICT_FALSE (!s)) return VPPCOM_EBADFD; return vppcom_session_write_inline (wrk, s, buf, n, 0 /* is_flush */, s->is_dgram ? 1 : 0); } int vppcom_session_write_msg (uint32_t session_handle, void *buf, size_t n) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *s; s = vcl_session_get_w_handle (wrk, session_handle); if (PREDICT_FALSE (!s)) return VPPCOM_EBADFD; return vppcom_session_write_inline (wrk, s, buf, n, 1 /* is_flush */, s->is_dgram ? 1 : 0); } #define vcl_fifo_rx_evt_valid_or_break(_s) \ if (PREDICT_FALSE (!_s->rx_fifo)) \ break; \ if (PREDICT_FALSE (svm_fifo_is_empty (_s->rx_fifo))) \ { \ if (!vcl_session_is_ct (_s)) \ { \ svm_fifo_unset_event (_s->rx_fifo); \ if (svm_fifo_is_empty (_s->rx_fifo)) \ break; \ } \ else if (svm_fifo_is_empty (_s->ct_rx_fifo)) \ { \ svm_fifo_unset_event (_s->rx_fifo); /* rx evts on actual fifo*/ \ if (svm_fifo_is_empty (_s->ct_rx_fifo)) \ break; \ } \ } \ static void vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, unsigned long n_bits, unsigned long *read_map, unsigned long *write_map, unsigned long *except_map, u32 * bits_set) { session_disconnected_msg_t *disconnected_msg; session_connected_msg_t *connected_msg; vcl_session_t *s; u32 sid; switch (e->event_type) { case SESSION_IO_EVT_RX: sid = e->session_index; s = vcl_session_get (wrk, sid); if (!s || !vcl_session_is_open (s)) break; vcl_fifo_rx_evt_valid_or_break (s); if (sid < n_bits && read_map) { clib_bitmap_set_no_check ((uword *) read_map, sid, 1); *bits_set += 1; } break; case SESSION_IO_EVT_TX: sid = e->session_index; s = vcl_session_get (wrk, sid); if (!s || !vcl_session_is_open (s)) break; if (sid < n_bits && write_map) { clib_bitmap_set_no_check ((uword *) write_map, sid, 1); *bits_set += 1; } break; case SESSION_CTRL_EVT_ACCEPTED: if (!e->postponed) s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data); else s = vcl_session_get (wrk, e->session_index); if (!s) break; sid = s->session_index; if (sid < n_bits && read_map) { clib_bitmap_set_no_check ((uword *) read_map, sid, 1); *bits_set += 1; } break; case SESSION_CTRL_EVT_CONNECTED: if (!e->postponed) { connected_msg = (session_connected_msg_t *) e->data; sid = vcl_session_connected_handler (wrk, connected_msg); } else sid = e->session_index; if (sid == VCL_INVALID_SESSION_INDEX) break; if (!(sid < n_bits && write_map)) break; clib_bitmap_set_no_check ((uword *) write_map, sid, 1); *bits_set += 1; s = vcl_session_get (wrk, sid); /* We didn't have a fifo when the event was added */ vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL); break; case SESSION_CTRL_EVT_DISCONNECTED: if (!e->postponed) { disconnected_msg = (session_disconnected_msg_t *) e->data; s = vcl_session_disconnected_handler (wrk, disconnected_msg); if (!s) break; } else { s = vcl_session_get (wrk, e->session_index); s->flags &= ~VCL_SESSION_F_PENDING_DISCONNECT; } if (vcl_session_is_closed (s)) { if (s && (s->flags & VCL_SESSION_F_PENDING_FREE)) vcl_session_free (wrk, s); break; } sid = s->session_index; if (sid < n_bits && except_map) { clib_bitmap_set_no_check ((uword *) except_map, sid, 1); *bits_set += 1; } break; case SESSION_CTRL_EVT_RESET: if (!e->postponed) { sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data); s = vcl_session_get (wrk, sid); } else { sid = e->session_index; s = vcl_session_get (wrk, sid); s->flags &= ~VCL_SESSION_F_PENDING_DISCONNECT; } if (vcl_session_is_closed (s)) { if (s && (s->flags & VCL_SESSION_F_PENDING_FREE)) vcl_session_free (wrk, s); break; } if (sid < n_bits && except_map) { clib_bitmap_set_no_check ((uword *) except_map, sid, 1); *bits_set += 1; } break; case SESSION_CTRL_EVT_UNLISTEN_REPLY: vcl_session_unlisten_reply_handler (wrk, e->data); break; case SESSION_CTRL_EVT_MIGRATED: vcl_session_migrated_handler (wrk, e->data); break; case SESSION_CTRL_EVT_CLEANUP: vcl_session_cleanup_handler (wrk, e->data); break; case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY: vcl_session_worker_update_reply_handler (wrk, e->data); break; case SESSION_CTRL_EVT_REQ_WORKER_UPDATE: vcl_session_req_worker_update_handler (wrk, e->data); break; case SESSION_CTRL_EVT_APP_ADD_SEGMENT: vcl_session_app_add_segment_handler (wrk, e->data); break; case SESSION_CTRL_EVT_APP_DEL_SEGMENT: vcl_session_app_del_segment_handler (wrk, e->data); break; case SESSION_CTRL_EVT_APP_WRK_RPC: vcl_worker_rpc_handler (wrk, e->data); break; default: clib_warning ("unhandled: %u", e->event_type); break; } } static int vcl_select_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq, unsigned long n_bits, unsigned long *read_map, unsigned long *write_map, unsigned long *except_map, double time_to_wait, u32 * bits_set) { svm_msg_q_msg_t *msg; session_event_t *e; u32 i; if (svm_msg_q_is_empty (mq)) { if (*bits_set) return 0; if (!time_to_wait) return 0; else if (time_to_wait < 0) svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY); else { if (svm_msg_q_timedwait (mq, time_to_wait)) return 0; } } vcl_mq_dequeue_batch (wrk, mq, ~0); for (i = 0; i < vec_len (wrk->mq_msg_vector); i++) { msg = vec_elt_at_index (wrk->mq_msg_vector, i); e = svm_msg_q_msg_data (mq, msg); vcl_select_handle_mq_event (wrk, e, n_bits, read_map, write_map, except_map, bits_set); svm_msg_q_free_msg (mq, msg); } vec_reset_length (wrk->mq_msg_vector); vcl_handle_pending_wrk_updates (wrk); return *bits_set; } static int vppcom_select_condvar (vcl_worker_t * wrk, int n_bits, vcl_si_set * read_map, vcl_si_set * write_map, vcl_si_set * except_map, double time_to_wait, u32 * bits_set) { double wait = 0, start = 0; if (!*bits_set) { wait = time_to_wait; start = clib_time_now (&wrk->clib_time); } do { vcl_select_handle_mq (wrk, wrk->app_event_queue, n_bits, read_map, write_map, except_map, wait, bits_set); if (*bits_set) return *bits_set; if (wait == -1) continue; wait = wait - (clib_time_now (&wrk->clib_time) - start); } while (wait > 0); return 0; } static int vppcom_select_eventfd (vcl_worker_t * wrk, int n_bits, vcl_si_set * read_map, vcl_si_set * write_map, vcl_si_set * except_map, double time_to_wait, u32 * bits_set) { vcl_mq_evt_conn_t *mqc; int __clib_unused n_read; int n_mq_evts, i; u64 buf; if (PREDICT_FALSE (wrk->api_client_handle == ~0)) { vcl_api_retry_attach (wrk); return 0; } vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns)); n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events, vec_len (wrk->mq_events), time_to_wait); for (i = 0; i < n_mq_evts; i++) { if (PREDICT_FALSE (wrk->mq_events[i].data.u32 == ~0)) { vcl_api_handle_disconnect (wrk); continue; } mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32); n_read = read (mqc->mq_fd, &buf, sizeof (buf)); vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map, except_map, 0, bits_set); } return (n_mq_evts > 0 ? (int) *bits_set : 0); } int vppcom_select (int n_bits, vcl_si_set * read_map, vcl_si_set * write_map, vcl_si_set * except_map, double time_to_wait) { u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0; vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *s = 0; int i; if (n_bits && read_map) { clib_bitmap_validate (wrk->rd_bitmap, minbits); clib_memcpy_fast (wrk->rd_bitmap, read_map, vec_len (wrk->rd_bitmap) * sizeof (vcl_si_set)); memset (read_map, 0, vec_len (wrk->rd_bitmap) * sizeof (vcl_si_set)); } if (n_bits && write_map) { clib_bitmap_validate (wrk->wr_bitmap, minbits); clib_memcpy_fast (wrk->wr_bitmap, write_map, vec_len (wrk->wr_bitmap) * sizeof (vcl_si_set)); memset (write_map, 0, vec_len (wrk->wr_bitmap) * sizeof (vcl_si_set)); } if (n_bits && except_map) { clib_bitmap_validate (wrk->ex_bitmap, minbits); clib_memcpy_fast (wrk->ex_bitmap, except_map, vec_len (wrk->ex_bitmap) * sizeof (vcl_si_set)); memset (except_map, 0, vec_len (wrk->ex_bitmap) * sizeof (vcl_si_set)); } if (!n_bits) return 0; if (!write_map) goto check_rd; clib_bitmap_foreach (sid, wrk->wr_bitmap) { if (!(s = vcl_session_get (wrk, sid))) { clib_bitmap_set_no_check ((uword *) write_map, sid, 1); bits_set++; continue; } if (vcl_session_write_ready (s)) { clib_bitmap_set_no_check ((uword *) write_map, sid, 1); bits_set++; } else { vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF); } } check_rd: if (!read_map) goto check_mq; clib_bitmap_foreach (sid, wrk->rd_bitmap) { if (!(s = vcl_session_get (wrk, sid))) { clib_bitmap_set_no_check ((uword *) read_map, sid, 1); bits_set++; continue; } if (vcl_session_read_ready (s)) { clib_bitmap_set_no_check ((uword *) read_map, sid, 1); bits_set++; } } check_mq: for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++) { vcl_select_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], n_bits, read_map, write_map, except_map, &bits_set); } vec_reset_length (wrk->unhandled_evts_vector); if (vcm->cfg.use_mq_eventfd) vppcom_select_eventfd (wrk, n_bits, read_map, write_map, except_map, time_to_wait, &bits_set); else vppcom_select_condvar (wrk, n_bits, read_map, write_map, except_map, time_to_wait, &bits_set); return (bits_set); } static inline void vep_verify_epoll_chain (vcl_worker_t * wrk, u32 vep_handle) { vppcom_epoll_t *vep; u32 sh = vep_handle; vcl_session_t *s; if (VPPCOM_DEBUG <= 3) return; s = vcl_session_get_w_handle (wrk, vep_handle); if (PREDICT_FALSE (!s)) { VDBG (0, "ERROR: Invalid vep_sh (%u)!", vep_handle); goto done; } if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP))) { VDBG (0, "ERROR: vep_sh (%u) is not a vep!", vep_handle); goto done; } vep = &s->vep; VDBG (0, "vep_sh (%u): Dumping epoll chain\n" "{\n" " is_vep = %u\n" " is_vep_session = %u\n" " next_sh = 0x%x (%u)\n" "}\n", vep_handle, s->flags & VCL_SESSION_F_IS_VEP, s->flags & VCL_SESSION_F_IS_VEP_SESSION, vep->next_sh, vep->next_sh); for (sh = vep->next_sh; sh != ~0; sh = vep->next_sh) { s = vcl_session_get_w_handle (wrk, sh); if (PREDICT_FALSE (!s)) { VDBG (0, "ERROR: Invalid sh (%u)!", sh); goto done; } if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP)) { VDBG (0, "ERROR: sh (%u) is a vep!", vep_handle); } else if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP_SESSION))) { VDBG (0, "ERROR: sh (%u) is not a vep session handle!", sh); goto done; } vep = &s->vep; if (PREDICT_FALSE (vep->vep_sh != vep_handle)) VDBG (0, "ERROR: session (%u) vep_sh (%u) != vep_sh (%u)!", sh, s->vep.vep_sh, vep_handle); if (s->flags & VCL_SESSION_F_IS_VEP_SESSION) { VDBG (0, "vep_sh[%u]: sh 0x%x (%u)\n" "{\n" " next_sh = 0x%x (%u)\n" " prev_sh = 0x%x (%u)\n" " vep_sh = 0x%x (%u)\n" " ev.events = 0x%x\n" " ev.data.u64 = 0x%llx\n" " et_mask = 0x%x\n" "}\n", vep_handle, sh, sh, vep->next_sh, vep->next_sh, vep->prev_sh, vep->prev_sh, vep->vep_sh, vep->vep_sh, vep->ev.events, vep->ev.data.u64, vep->et_mask); } } done: VDBG (0, "vep_sh (%u): Dump complete!\n", vep_handle); } int vppcom_epoll_create (void) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *vep_session; vep_session = vcl_session_alloc (wrk); vep_session->flags |= VCL_SESSION_F_IS_VEP; vep_session->vep.vep_sh = ~0; vep_session->vep.next_sh = ~0; vep_session->vep.prev_sh = ~0; vep_session->vpp_handle = ~0; vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_session->session_index); VDBG (0, "Created vep_idx %u", vep_session->session_index); return vcl_session_handle (vep_session); } static void vcl_epoll_ctl_add_unhandled_event (vcl_worker_t *wrk, vcl_session_t *s, u8 is_epollet, session_evt_type_t evt) { if (!is_epollet) { if (s->vep.lt_next == VCL_INVALID_SESSION_INDEX) vcl_epoll_lt_add (wrk, s); return; } session_event_t e = { 0 }; e.session_index = s->session_index; e.event_type = evt; if (evt == SESSION_IO_EVT_RX) s->flags &= ~VCL_SESSION_F_HAS_RX_EVT; vec_add1 (wrk->unhandled_evts_vector, e); } int vppcom_epoll_ctl (uint32_t vep_handle, int op, uint32_t session_handle, struct epoll_event *event) { vcl_worker_t *wrk = vcl_worker_get_current (); int rv = VPPCOM_OK, add_evt = 0; vcl_session_t *vep_session; vcl_session_t *s; if (vep_handle == session_handle) { VDBG (0, "vep_sh == session handle (%u)!", vep_handle); return VPPCOM_EINVAL; } vep_session = vcl_session_get_w_handle (wrk, vep_handle); if (PREDICT_FALSE (!vep_session)) { VDBG (0, "Invalid vep_sh (%u)!", vep_handle); return VPPCOM_EBADFD; } if (PREDICT_FALSE (!(vep_session->flags & VCL_SESSION_F_IS_VEP))) { VDBG (0, "vep_sh (%u) is not a vep!", vep_handle); return VPPCOM_EINVAL; } ASSERT (vep_session->vep.vep_sh == ~0); ASSERT (vep_session->vep.prev_sh == ~0); s = vcl_session_get_w_handle (wrk, session_handle); if (PREDICT_FALSE (!s)) { VDBG (0, "Invalid session_handle (%u)!", session_handle); return VPPCOM_EBADFD; } if (PREDICT_FALSE (s->flags & VCL_SESSION_F_IS_VEP)) { VDBG (0, "session_handle (%u) is a vep!", vep_handle); return VPPCOM_EINVAL; } switch (op) { case EPOLL_CTL_ADD: if (PREDICT_FALSE (!event)) { VDBG (0, "EPOLL_CTL_ADD: NULL pointer to epoll_event structure!"); return VPPCOM_EINVAL; } if (s->flags & VCL_SESSION_F_IS_VEP_SESSION) { VDBG (0, "EPOLL_CTL_ADD: %u already epolled!", s->session_index); rv = VPPCOM_EEXIST; goto done; } if (vep_session->vep.next_sh != ~0) { vcl_session_t *next_session; next_session = vcl_session_get_w_handle (wrk, vep_session->vep.next_sh); if (PREDICT_FALSE (!next_session)) { VDBG (0, "EPOLL_CTL_ADD: Invalid vep.next_sh (%u) on " "vep_idx (%u)!", vep_session->vep.next_sh, vep_handle); return VPPCOM_EBADFD; } ASSERT (next_session->vep.prev_sh == vep_handle); next_session->vep.prev_sh = session_handle; } s->vep.next_sh = vep_session->vep.next_sh; s->vep.prev_sh = vep_handle; s->vep.vep_sh = vep_handle; s->vep.et_mask = VEP_DEFAULT_ET_MASK; s->vep.lt_next = VCL_INVALID_SESSION_INDEX; s->vep.ev = *event; s->vep.ev.events |= EPOLLHUP | EPOLLERR; s->flags &= ~VCL_SESSION_F_IS_VEP; s->flags |= VCL_SESSION_F_IS_VEP_SESSION; vep_session->vep.next_sh = session_handle; if ((event->events & EPOLLOUT)) { int write_ready = vcl_session_write_ready (s); vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL); if (write_ready > 0) { /* Generate EPOLLOUT if tx fifo not full */ vcl_epoll_ctl_add_unhandled_event ( wrk, s, event->events & EPOLLET, SESSION_IO_EVT_TX); add_evt = 1; } else { vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF); } } /* Generate EPOLLIN if rx fifo has data */ if ((event->events & EPOLLIN) && (vcl_session_read_ready (s) > 0)) { vcl_epoll_ctl_add_unhandled_event (wrk, s, event->events & EPOLLET, SESSION_IO_EVT_RX); add_evt = 1; } if (!add_evt && vcl_session_is_closing (s)) { session_event_t e = { 0 }; if (s->session_state == VCL_STATE_VPP_CLOSING) e.event_type = SESSION_CTRL_EVT_DISCONNECTED; else e.event_type = SESSION_CTRL_EVT_RESET; e.session_index = s->session_index; e.postponed = 1; vec_add1 (wrk->unhandled_evts_vector, e); } VDBG (1, "EPOLL_CTL_ADD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!", vep_handle, session_handle, event->events, event->data.u64); vcl_evt (VCL_EVT_EPOLL_CTLADD, s, event->events, event->data.u64); break; case EPOLL_CTL_MOD: if (PREDICT_FALSE (!event)) { VDBG (0, "EPOLL_CTL_MOD: NULL pointer to epoll_event structure!"); rv = VPPCOM_EINVAL; goto done; } else if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP_SESSION))) { VDBG (0, "sh %u EPOLL_CTL_MOD: not a vep session!", session_handle); rv = VPPCOM_ENOENT; goto done; } else if (PREDICT_FALSE (s->vep.vep_sh != vep_handle)) { VDBG (0, "EPOLL_CTL_MOD: sh %u vep_sh (%u) != vep_sh (%u)!", session_handle, s->vep.vep_sh, vep_handle); rv = VPPCOM_EINVAL; goto done; } /* Generate EPOLLOUT if session write ready and event was not on */ if ((event->events & EPOLLOUT) && !(s->vep.ev.events & EPOLLOUT)) { /* Fifo size load acq synchronized with update store rel */ int write_ready = vcl_session_write_ready (s); vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL); if (write_ready > 0) vcl_epoll_ctl_add_unhandled_event (wrk, s, event->events & EPOLLET, SESSION_IO_EVT_TX); else /* Request deq ntf in case dequeue happened while updating flag */ vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF); } else if (!(event->events & EPOLLOUT)) vcl_session_del_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL); /* Generate EPOLLIN if session read ready and event was not on */ if ((event->events & EPOLLIN) && !(s->vep.ev.events & EPOLLIN) && (vcl_session_read_ready (s) > 0)) { vcl_epoll_ctl_add_unhandled_event (wrk, s, event->events & EPOLLET, SESSION_IO_EVT_RX); } s->vep.et_mask = VEP_DEFAULT_ET_MASK; s->vep.ev = *event; s->vep.ev.events |= EPOLLHUP | EPOLLERR; VDBG (1, "EPOLL_CTL_MOD: vep_sh %u, sh %u, events 0x%x, data 0x%llx!", vep_handle, session_handle, event->events, event->data.u64); break; case EPOLL_CTL_DEL: if (PREDICT_FALSE (!(s->flags & VCL_SESSION_F_IS_VEP_SESSION))) { VDBG (0, "EPOLL_CTL_DEL: %u not a vep session!", session_handle); rv = VPPCOM_ENOENT; goto done; } else if (PREDICT_FALSE (s->vep.vep_sh != vep_handle)) { VDBG (0, "EPOLL_CTL_DEL: sh %u vep_sh (%u) != vep_sh (%u)!", session_handle, s->vep.vep_sh, vep_handle); rv = VPPCOM_EINVAL; goto done; } if (s->vep.prev_sh == vep_handle) vep_session->vep.next_sh = s->vep.next_sh; else { vcl_session_t *prev_session; prev_session = vcl_session_get_w_handle (wrk, s->vep.prev_sh); if (PREDICT_FALSE (!prev_session)) { VDBG (0, "EPOLL_CTL_DEL: Invalid prev_sh (%u) on sh (%u)!", s->vep.prev_sh, session_handle); return VPPCOM_EBADFD; } ASSERT (prev_session->vep.next_sh == session_handle); prev_session->vep.next_sh = s->vep.next_sh; } if (s->vep.next_sh != ~0) { vcl_session_t *next_session; next_session = vcl_session_get_w_handle (wrk, s->vep.next_sh); if (PREDICT_FALSE (!next_session)) { VDBG (0, "EPOLL_CTL_DEL: Invalid next_sh (%u) on sh (%u)!", s->vep.next_sh, session_handle); return VPPCOM_EBADFD; } ASSERT (next_session->vep.prev_sh == session_handle); next_session->vep.prev_sh = s->vep.prev_sh; } if (s->vep.lt_next != VCL_INVALID_SESSION_INDEX) vcl_epoll_lt_del (wrk, s); memset (&s->vep, 0, sizeof (s->vep)); s->vep.next_sh = ~0; s->vep.prev_sh = ~0; s->vep.vep_sh = ~0; s->vep.lt_next = VCL_INVALID_SESSION_INDEX; s->flags &= ~VCL_SESSION_F_IS_VEP_SESSION; if (vcl_session_is_open (s)) vcl_session_del_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL); VDBG (1, "EPOLL_CTL_DEL: vep_idx %u, sh %u!", vep_handle, session_handle); vcl_evt (VCL_EVT_EPOLL_CTLDEL, s, vep_sh); break; default: VDBG (0, "Invalid operation (%d)!", op); rv = VPPCOM_EINVAL; } vep_verify_epoll_chain (wrk, vep_handle); done: return rv; } always_inline u8 vcl_ep_session_needs_evt (vcl_session_t *s, u32 evt) { /* No event if not epolled / events reset on hup or level-trigger on */ return ((s->vep.ev.events & evt) && s->vep.lt_next == VCL_INVALID_SESSION_INDEX); } static inline void vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, struct epoll_event *events, u32 * num_ev) { session_disconnected_msg_t *disconnected_msg; session_connected_msg_t *connected_msg; u32 sid = ~0, session_events; u64 session_evt_data = ~0; vcl_session_t *s; u8 add_event = 0; switch (e->event_type) { case SESSION_IO_EVT_RX: sid = e->session_index; s = vcl_session_get (wrk, sid); if (vcl_session_is_closed (s)) break; vcl_fifo_rx_evt_valid_or_break (s); if (!vcl_ep_session_needs_evt (s, EPOLLIN) || (s->flags & VCL_SESSION_F_HAS_RX_EVT)) break; session_events = s->vep.ev.events; add_event = 1; events[*num_ev].events = EPOLLIN; session_evt_data = s->vep.ev.data.u64; s->flags |= VCL_SESSION_F_HAS_RX_EVT; break; case SESSION_IO_EVT_TX: sid = e->session_index; s = vcl_session_get (wrk, sid); if (!s || !vcl_session_is_open (s)) break; svm_fifo_reset_has_deq_ntf (vcl_session_is_ct (s) ? s->ct_tx_fifo : s->tx_fifo); if (!vcl_ep_session_needs_evt (s, EPOLLOUT)) break; session_events = s->vep.ev.events; add_event = 1; events[*num_ev].events = EPOLLOUT; session_evt_data = s->vep.ev.data.u64; break; case SESSION_CTRL_EVT_ACCEPTED: if (!e->postponed) s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data); else s = vcl_session_get (wrk, e->session_index); if (!s || !vcl_ep_session_needs_evt (s, EPOLLIN)) break; sid = s->session_index; session_events = s->vep.ev.events; add_event = 1; events[*num_ev].events = EPOLLIN; session_evt_data = s->vep.ev.data.u64; break; case SESSION_CTRL_EVT_CONNECTED: if (!e->postponed) { connected_msg = (session_connected_msg_t *) e->data; sid = vcl_session_connected_handler (wrk, connected_msg); } else sid = e->session_index; s = vcl_session_get (wrk, sid); if (vcl_session_is_closed (s) || !vcl_ep_session_needs_evt (s, EPOLLOUT)) break; /* We didn't have a fifo when the event was added */ vcl_session_add_want_deq_ntf (s, SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL); add_event = 1; session_events = s->vep.ev.events; /* Generate EPOLLOUT because there's no connected event */ events[*num_ev].events = EPOLLOUT; session_evt_data = s->vep.ev.data.u64; if (s->session_state == VCL_STATE_DETACHED) { events[*num_ev].events |= EPOLLHUP; s->vep.ev.events = 0; } break; case SESSION_CTRL_EVT_DISCONNECTED: if (!e->postponed) { disconnected_msg = (session_disconnected_msg_t *) e->data; s = vcl_session_disconnected_handler (wrk, disconnected_msg); } else { s = vcl_session_get (wrk, e->session_index); s->flags &= ~VCL_SESSION_F_PENDING_DISCONNECT; } if (vcl_session_is_closed (s) || !vcl_ep_session_needs_evt (s, EPOLLHUP)) { if (s && (s->flags & VCL_SESSION_F_PENDING_FREE)) vcl_session_free (wrk, s); break; } sid = s->session_index; session_events = s->vep.ev.events; add_event = 1; if (EPOLLRDHUP & session_events) { /* If app can distinguish between RDHUP and HUP, * we make finer control */ events[*num_ev].events = EPOLLRDHUP; if (s->flags & VCL_SESSION_F_WR_SHUTDOWN) { events[*num_ev].events |= EPOLLHUP; } } else { events[*num_ev].events = EPOLLHUP; } session_evt_data = s->vep.ev.data.u64; s->vep.ev.events = 0; break; case SESSION_CTRL_EVT_BOUND: vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data); break; case SESSION_CTRL_EVT_RESET: if (!e->postponed) { sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data); s = vcl_session_get (wrk, sid); } else { sid = e->session_index; s = vcl_session_get (wrk, sid); s->flags &= ~VCL_SESSION_F_PENDING_DISCONNECT; } if (vcl_session_is_closed (s) || !vcl_ep_session_needs_evt (s, EPOLLHUP)) { if (s && (s->flags & VCL_SESSION_F_PENDING_FREE)) vcl_session_free (wrk, s); break; } session_events = s->vep.ev.events; add_event = 1; events[*num_ev].events = EPOLLERR | EPOLLHUP; if ((EPOLLRDHUP & session_events) && (s->flags & VCL_SESSION_F_RD_SHUTDOWN)) { events[*num_ev].events |= EPOLLRDHUP; } if ((EPOLLIN & session_events) && (s->flags & VCL_SESSION_F_RD_SHUTDOWN)) { events[*num_ev].events |= EPOLLIN; } session_evt_data = s->vep.ev.data.u64; s->vep.ev.events = 0; break; case SESSION_CTRL_EVT_UNLISTEN_REPLY: vcl_session_unlisten_reply_handler (wrk, e->data); break; case SESSION_CTRL_EVT_MIGRATED: vcl_session_migrated_handler (wrk, e->data); break; case SESSION_CTRL_EVT_CLEANUP: vcl_session_cleanup_handler (wrk, e->data); break; case SESSION_CTRL_EVT_REQ_WORKER_UPDATE: vcl_session_req_worker_update_handler (wrk, e->data); break; case SESSION_CTRL_EVT_WORKER_UPDATE_REPLY: vcl_session_worker_update_reply_handler (wrk, e->data); break; case SESSION_CTRL_EVT_APP_ADD_SEGMENT: vcl_session_app_add_segment_handler (wrk, e->data); break; case SESSION_CTRL_EVT_APP_DEL_SEGMENT: vcl_session_app_del_segment_handler (wrk, e->data); break; case SESSION_CTRL_EVT_APP_WRK_RPC: vcl_worker_rpc_handler (wrk, e->data); break; default: VDBG (0, "unhandled: %u", e->event_type); break; } if (add_event) { ASSERT (s->flags & VCL_SESSION_F_IS_VEP_SESSION); events[*num_ev].data.u64 = session_evt_data; if (EPOLLONESHOT & session_events) { s = vcl_session_get (wrk, sid); if (!(events[*num_ev].events & EPOLLHUP)) s->vep.ev.events = EPOLLHUP | EPOLLERR; } else if (!(EPOLLET & session_events)) { s = vcl_session_get (wrk, sid); if (s->vep.lt_next == VCL_INVALID_SESSION_INDEX) vcl_epoll_lt_add (wrk, s); } *num_ev += 1; } } static int vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq, struct epoll_event *events, u32 maxevents, double wait_for_time, u32 * num_ev) { svm_msg_q_msg_t *msg; session_event_t *e; int i; if (vec_len (wrk->mq_msg_vector) && svm_msg_q_is_empty (mq)) goto handle_dequeued; if (svm_msg_q_is_empty (mq)) { if (!wait_for_time) return 0; else if (wait_for_time < 0) svm_msg_q_wait (mq, SVM_MQ_WAIT_EMPTY); else { if (svm_msg_q_timedwait (mq, wait_for_time / 1e3)) return 0; } } ASSERT (maxevents > *num_ev); vcl_mq_dequeue_batch (wrk, mq, ~0); handle_dequeued: for (i = 0; i < vec_len (wrk->mq_msg_vector); i++) { msg = vec_elt_at_index (wrk->mq_msg_vector, i); e = svm_msg_q_msg_data (mq, msg); if (*num_ev < maxevents) vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev); else vcl_handle_mq_event (wrk, e); svm_msg_q_free_msg (mq, msg); } vec_reset_length (wrk->mq_msg_vector); vcl_handle_pending_wrk_updates (wrk); return *num_ev; } static int vppcom_epoll_wait_condvar (vcl_worker_t *wrk, struct epoll_event *events, int maxevents, u32 n_evts, double timeout_ms) { double end = -1; if (!n_evts) { if (timeout_ms > 0) end = clib_time_now (&wrk->clib_time) + (timeout_ms / 1e3); } do { vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events, maxevents, timeout_ms, &n_evts); if (n_evts || !timeout_ms) return n_evts; } while (end == -1 || clib_time_now (&wrk->clib_time) < end); return 0; } static int vppcom_epoll_wait_eventfd (vcl_worker_t *wrk, struct epoll_event *events, int maxevents, u32 n_evts, double timeout_ms) { int __clib_unused n_read; vcl_mq_evt_conn_t *mqc; int n_mq_evts, i; double end = -1; u64 buf; if (PREDICT_FALSE (wrk->api_client_handle == ~0)) { vcl_api_retry_attach (wrk); return n_evts; } vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns)); if (!n_evts) { if (timeout_ms > 0) end = clib_time_now (&wrk->clib_time) + (timeout_ms / 1e3); } do { n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events, vec_len (wrk->mq_events), timeout_ms); if (n_mq_evts < 0) { VDBG (0, "epoll_wait error %u", errno); return n_evts; } for (i = 0; i < n_mq_evts; i++) { if (PREDICT_FALSE (wrk->mq_events[i].data.u32 == ~0)) { /* api socket was closed */ vcl_api_handle_disconnect (wrk); continue; } mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32); n_read = read (mqc->mq_fd, &buf, sizeof (buf)); vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, &n_evts); } if (n_evts || !timeout_ms) return n_evts; } while (end == -1 || clib_time_now (&wrk->clib_time) < end); return 0; } static void vcl_epoll_wait_handle_lt (vcl_worker_t *wrk, struct epoll_event *events, int maxevents, u32 *n_evts) { u32 add_event = 0, evt_flags = 0, next, *to_remove = 0, *si; vcl_session_t *s; u64 evt_data; int rv; ASSERT (wrk->ep_lt_current != VCL_INVALID_SESSION_INDEX); if (*n_evts >= maxevents) return; next = wrk->ep_lt_current; do { s = vcl_session_get (wrk, next); next = s->vep.lt_next; if (s->vep.ev.events == 0) { vec_add1 (to_remove, s->session_index); continue; } if ((s->vep.ev.events & EPOLLIN) && (rv = vcl_session_read_ready (s))) { add_event = 1; evt_flags |= rv > 0 ? EPOLLIN : EPOLLHUP | EPOLLRDHUP; evt_data = s->vep.ev.data.u64; } if ((s->vep.ev.events & EPOLLOUT) && (rv = vcl_session_write_ready (s))) { add_event = 1; evt_flags |= rv > 0 ? EPOLLOUT : EPOLLHUP | EPOLLRDHUP; evt_data = s->vep.ev.data.u64; } if (!add_event && s->session_state > VCL_STATE_READY) { add_event = 1; evt_flags |= EPOLLHUP | EPOLLRDHUP; evt_data = s->vep.ev.data.u64; } if (add_event) { events[*n_evts].events = evt_flags; events[*n_evts].data.u64 = evt_data; if (EPOLLONESHOT & s->vep.ev.events) s->vep.ev.events = EPOLLHUP | EPOLLERR; if (evt_flags & EPOLLHUP) s->vep.ev.events = 0; *n_evts += 1; add_event = 0; evt_flags = 0; if (*n_evts == maxevents) { wrk->ep_lt_current = next; break; } } else { vec_add1 (to_remove, s->session_index); } } while (next != wrk->ep_lt_current); vec_foreach (si, to_remove) { s = vcl_session_get (wrk, *si); vcl_epoll_lt_del (wrk, s); } vec_free (to_remove); } int vppcom_epoll_wait (uint32_t vep_handle, struct epoll_event *events, int maxevents, double wait_for_time) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *vep_session; u32 n_evts = 0; int i; if (PREDICT_FALSE (maxevents <= 0)) { VDBG (0, "ERROR: Invalid maxevents (%d)!", maxevents); return VPPCOM_EINVAL; } vep_session = vcl_session_get_w_handle (wrk, vep_handle); if (!vep_session) return VPPCOM_EBADFD; if (PREDICT_FALSE (!(vep_session->flags & VCL_SESSION_F_IS_VEP))) { VDBG (0, "ERROR: vep_idx (%u) is not a vep!", vep_handle); return VPPCOM_EINVAL; } if (vec_len (wrk->unhandled_evts_vector)) { for (i = 0; i < vec_len (wrk->unhandled_evts_vector); i++) { vcl_epoll_wait_handle_mq_event (wrk, &wrk->unhandled_evts_vector[i], events, &n_evts); if (n_evts == maxevents) { vec_delete (wrk->unhandled_evts_vector, i + 1, 0); return n_evts; } } vec_reset_length (wrk->unhandled_evts_vector); } if (PREDICT_FALSE (wrk->ep_lt_current != VCL_INVALID_SESSION_INDEX)) vcl_epoll_wait_handle_lt (wrk, events, maxevents, &n_evts); /* Request to only drain unhandled */ if ((int) wait_for_time == -2) return n_evts; if (vcm->cfg.use_mq_eventfd) n_evts = vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts, wait_for_time); else n_evts = vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts, wait_for_time); return n_evts; } int vppcom_session_attr (uint32_t session_handle, uint32_t op, void *buffer, uint32_t * buflen) { vcl_worker_t *wrk = vcl_worker_get_current (); u32 *flags = buffer; vppcom_endpt_t *ep = buffer; transport_endpt_attr_t tea; vcl_session_t *session; int rv = VPPCOM_OK; session = vcl_session_get_w_handle (wrk, session_handle); if (!session) return VPPCOM_EBADFD; switch (op) { case VPPCOM_ATTR_GET_NREAD: rv = vcl_session_read_ready (session); VDBG (2, "VPPCOM_ATTR_GET_NREAD: sh %u, nread = %d", session_handle, rv); break; case VPPCOM_ATTR_GET_NWRITE: rv = vcl_session_write_ready (session); VDBG (2, "VPPCOM_ATTR_GET_NWRITE: sh %u, nwrite = %d", session_handle, rv); break; case VPPCOM_ATTR_GET_FLAGS: if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*flags)))) { *flags = O_RDWR | (vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK) ? O_NONBLOCK : 0); *buflen = sizeof (*flags); VDBG (2, "VPPCOM_ATTR_GET_FLAGS: sh %u, flags = 0x%08x, " "is_nonblocking = %u", session_handle, *flags, vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK)); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_FLAGS: if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (*flags)))) { if (*flags & O_NONBLOCK) vcl_session_set_attr (session, VCL_SESS_ATTR_NONBLOCK); else vcl_session_clear_attr (session, VCL_SESS_ATTR_NONBLOCK); VDBG (2, "VPPCOM_ATTR_SET_FLAGS: sh %u, flags = 0x%08x," " is_nonblocking = %u", session_handle, *flags, vcl_session_has_attr (session, VCL_SESS_ATTR_NONBLOCK)); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_PEER_ADDR: if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*ep)) && ep->ip)) { ep->is_ip4 = session->transport.is_ip4; ep->port = session->transport.rmt_port; if (session->transport.is_ip4) clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6, sizeof (ip6_address_t)); *buflen = sizeof (*ep); VDBG (1, "VPPCOM_ATTR_GET_PEER_ADDR: sh %u, is_ip4 = %u, " "addr = %U, port %u", session_handle, ep->is_ip4, vcl_format_ip46_address, &session->transport.rmt_ip, ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (ep->port)); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_LCL_ADDR: if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*ep)) && ep->ip)) { ep->is_ip4 = session->transport.is_ip4; ep->port = session->transport.lcl_port; if (session->transport.is_ip4) clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy_fast (ep->ip, &session->transport.lcl_ip.ip6, sizeof (ip6_address_t)); *buflen = sizeof (*ep); VDBG (1, "VPPCOM_ATTR_GET_LCL_ADDR: sh %u, is_ip4 = %u, addr = %U" " port %d", session_handle, ep->is_ip4, vcl_format_ip46_address, &session->transport.lcl_ip, ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (ep->port)); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_ORIGINAL_DST: if (!session->transport.is_ip4) { /* now original dst only support ipv4*/ rv = VPPCOM_EAFNOSUPPORT; break; } if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*ep)) && ep->ip)) { ep->is_ip4 = session->transport.is_ip4; ep->port = session->original_dst_port; clib_memcpy_fast (ep->ip, &session->original_dst_ip4, sizeof (ip4_address_t)); *buflen = sizeof (*ep); VDBG (1, "VPPCOM_ATTR_GET_ORIGINAL_DST: sh %u, is_ip4 = %u, addr = %U" " port %d", session_handle, ep->is_ip4, vcl_format_ip4_address, (ip4_address_t *) (&session->original_dst_ip4), ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (ep->port)); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_LCL_ADDR: if (PREDICT_TRUE (buffer && buflen && (*buflen >= sizeof (*ep)) && ep->ip)) { session->transport.is_ip4 = ep->is_ip4; session->transport.lcl_port = ep->port; vcl_ip_copy_from_ep (&session->transport.lcl_ip, ep); *buflen = sizeof (*ep); VDBG (1, "VPPCOM_ATTR_SET_LCL_ADDR: sh %u, is_ip4 = %u, addr = %U" " port %d", session_handle, ep->is_ip4, vcl_format_ip46_address, &session->transport.lcl_ip, ep->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (ep->port)); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_LIBC_EPFD: rv = session->libc_epfd; VDBG (2, "VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d", rv); break; case VPPCOM_ATTR_SET_LIBC_EPFD: if (PREDICT_TRUE (buffer && buflen && (*buflen == sizeof (session->libc_epfd)))) { session->libc_epfd = *(int *) buffer; *buflen = sizeof (session->libc_epfd); VDBG (2, "VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, buflen %d", session->libc_epfd, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_PROTOCOL: if (buffer && buflen && (*buflen >= sizeof (int))) { *(int *) buffer = session->session_type; *buflen = sizeof (int); VDBG (2, "VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d", *(int *) buffer, *(int *) buffer ? "UDP" : "TCP", *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_LISTEN: if (buffer && buflen && (*buflen >= sizeof (int))) { *(int *) buffer = vcl_session_has_attr (session, VCL_SESS_ATTR_LISTEN); *buflen = sizeof (int); VDBG (2, "VPPCOM_ATTR_GET_LISTEN: %d, buflen %d", *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_ERROR: if (buffer && buflen && (*buflen >= sizeof (int))) { *(int *) buffer = 0; *buflen = sizeof (int); VDBG (2, "VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#", *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_TX_FIFO_LEN: if (buffer && buflen && (*buflen >= sizeof (u32))) { /* VPP-TBD */ *(size_t *) buffer = (session->sndbuf_size ? session->sndbuf_size : session->tx_fifo ? svm_fifo_size (session->tx_fifo) : vcm->cfg.tx_fifo_size); *buflen = sizeof (u32); VDBG (2, "VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), buflen %d," " #VPP-TBD#", *(size_t *) buffer, *(size_t *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_DSCP: if (buffer && buflen && (*buflen >= sizeof (u8))) { session->dscp = *(u8 *) buffer; VDBG (2, "VPPCOM_ATTR_SET_DSCP: %u (0x%x), buflen %d,", *(u8 *) buffer, *(u8 *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_TX_FIFO_LEN: if (buffer && buflen && (*buflen == sizeof (u32))) { /* VPP-TBD */ session->sndbuf_size = *(u32 *) buffer; VDBG (2, "VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), buflen %d," " #VPP-TBD#", session->sndbuf_size, session->sndbuf_size, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_RX_FIFO_LEN: if (buffer && buflen && (*buflen >= sizeof (u32))) { /* VPP-TBD */ *(size_t *) buffer = (session->rcvbuf_size ? session->rcvbuf_size : session->rx_fifo ? svm_fifo_size (session->rx_fifo) : vcm->cfg.rx_fifo_size); *buflen = sizeof (u32); VDBG (2, "VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), buflen %d, " "#VPP-TBD#", *(size_t *) buffer, *(size_t *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_RX_FIFO_LEN: if (buffer && buflen && (*buflen == sizeof (u32))) { /* VPP-TBD */ session->rcvbuf_size = *(u32 *) buffer; VDBG (2, "VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), buflen %d," " #VPP-TBD#", session->sndbuf_size, session->sndbuf_size, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_REUSEADDR: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = vcl_session_has_attr (session, VCL_SESS_ATTR_REUSEADDR); *buflen = sizeof (int); VDBG (2, "VPPCOM_ATTR_GET_REUSEADDR: %d, buflen %d, #VPP-TBD#", *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_REUSEADDR: if (buffer && buflen && (*buflen == sizeof (int)) && !vcl_session_has_attr (session, VCL_SESS_ATTR_LISTEN)) { /* VPP-TBD */ if (*(int *) buffer) vcl_session_set_attr (session, VCL_SESS_ATTR_REUSEADDR); else vcl_session_clear_attr (session, VCL_SESS_ATTR_REUSEADDR); VDBG (2, "VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d, #VPP-TBD#", vcl_session_has_attr (session, VCL_SESS_ATTR_REUSEADDR), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_REUSEPORT: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = vcl_session_has_attr (session, VCL_SESS_ATTR_REUSEPORT); *buflen = sizeof (int); VDBG (2, "VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d, #VPP-TBD#", *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_REUSEPORT: if (buffer && buflen && (*buflen == sizeof (int)) && !vcl_session_has_attr (session, VCL_SESS_ATTR_LISTEN)) { /* VPP-TBD */ if (*(int *) buffer) vcl_session_set_attr (session, VCL_SESS_ATTR_REUSEPORT); else vcl_session_clear_attr (session, VCL_SESS_ATTR_REUSEPORT); VDBG (2, "VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d, #VPP-TBD#", vcl_session_has_attr (session, VCL_SESS_ATTR_REUSEPORT), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_BROADCAST: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = vcl_session_has_attr (session, VCL_SESS_ATTR_BROADCAST); *buflen = sizeof (int); VDBG (2, "VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d, #VPP-TBD#", *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_BROADCAST: if (buffer && buflen && (*buflen == sizeof (int))) { /* VPP-TBD */ if (*(int *) buffer) vcl_session_set_attr (session, VCL_SESS_ATTR_BROADCAST); else vcl_session_clear_attr (session, VCL_SESS_ATTR_BROADCAST); VDBG (2, "VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, #VPP-TBD#", vcl_session_has_attr (session, VCL_SESS_ATTR_BROADCAST), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_V6ONLY: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = vcl_session_has_attr (session, VCL_SESS_ATTR_V6ONLY); *buflen = sizeof (int); VDBG (2, "VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, #VPP-TBD#", *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_V6ONLY: if (buffer && buflen && (*buflen == sizeof (int))) { /* VPP-TBD */ if (*(int *) buffer) vcl_session_set_attr (session, VCL_SESS_ATTR_V6ONLY); else vcl_session_clear_attr (session, VCL_SESS_ATTR_V6ONLY); VDBG (2, "VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, #VPP-TBD#", vcl_session_has_attr (session, VCL_SESS_ATTR_V6ONLY), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_KEEPALIVE: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = vcl_session_has_attr (session, VCL_SESS_ATTR_KEEPALIVE); *buflen = sizeof (int); VDBG (2, "VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, #VPP-TBD#", *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_KEEPALIVE: if (buffer && buflen && (*buflen == sizeof (int))) { /* VPP-TBD */ if (*(int *) buffer) vcl_session_set_attr (session, VCL_SESS_ATTR_KEEPALIVE); else vcl_session_clear_attr (session, VCL_SESS_ATTR_KEEPALIVE); VDBG (2, "VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, #VPP-TBD#", vcl_session_has_attr (session, VCL_SESS_ATTR_KEEPALIVE), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_TCP_NODELAY: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = vcl_session_has_attr (session, VCL_SESS_ATTR_TCP_NODELAY); *buflen = sizeof (int); VDBG (2, "VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, #VPP-TBD#", *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_TCP_NODELAY: if (buffer && buflen && (*buflen == sizeof (int))) { /* VPP-TBD */ if (*(int *) buffer) vcl_session_set_attr (session, VCL_SESS_ATTR_TCP_NODELAY); else vcl_session_clear_attr (session, VCL_SESS_ATTR_TCP_NODELAY); VDBG (2, "VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, #VPP-TBD#", vcl_session_has_attr (session, VCL_SESS_ATTR_TCP_NODELAY), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_TCP_KEEPIDLE: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = vcl_session_has_attr (session, VCL_SESS_ATTR_TCP_KEEPIDLE); *buflen = sizeof (int); VDBG (2, "VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, #VPP-TBD#", *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_TCP_KEEPIDLE: if (buffer && buflen && (*buflen == sizeof (int))) { /* VPP-TBD */ if (*(int *) buffer) vcl_session_set_attr (session, VCL_SESS_ATTR_TCP_KEEPIDLE); else vcl_session_clear_attr (session, VCL_SESS_ATTR_TCP_KEEPIDLE); VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, #VPP-TBD#", vcl_session_has_attr (session, VCL_SESS_ATTR_TCP_KEEPIDLE), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_TCP_KEEPINTVL: if (buffer && buflen && (*buflen >= sizeof (int))) { /* VPP-TBD */ *(int *) buffer = vcl_session_has_attr (session, VCL_SESS_ATTR_TCP_KEEPINTVL); *buflen = sizeof (int); VDBG (2, "VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, #VPP-TBD#", *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_SET_TCP_KEEPINTVL: if (buffer && buflen && (*buflen == sizeof (int))) { /* VPP-TBD */ if (*(int *) buffer) vcl_session_set_attr (session, VCL_SESS_ATTR_TCP_KEEPINTVL); else vcl_session_clear_attr (session, VCL_SESS_ATTR_TCP_KEEPINTVL); VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, #VPP-TBD#", vcl_session_has_attr (session, VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_TCP_USER_MSS: if (!(buffer && buflen && (*buflen >= sizeof (u32)))) { rv = VPPCOM_EINVAL; break; } tea.type = TRANSPORT_ENDPT_ATTR_MSS; tea.mss = *(u32 *) buffer; if (vcl_session_transport_attr (wrk, session, 1 /* is_get */, &tea)) rv = VPPCOM_ENOPROTOOPT; if (!rv) { *(u32 *) buffer = tea.mss; *buflen = sizeof (int); } VDBG (2, "VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d", *(int *) buffer, *buflen); break; case VPPCOM_ATTR_SET_TCP_USER_MSS: if (!(buffer && buflen && (*buflen == sizeof (u32)))) { rv = VPPCOM_EINVAL; break; } tea.type = TRANSPORT_ENDPT_ATTR_MSS; tea.mss = *(u32 *) buffer; if (vcl_session_transport_attr (wrk, session, 0 /* is_get */, &tea)) rv = VPPCOM_ENOPROTOOPT; VDBG (2, "VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d", tea.mss, *buflen); break; case VPPCOM_ATTR_SET_CONNECTED: session->flags |= VCL_SESSION_F_CONNECTED; break; case VPPCOM_ATTR_SET_CKPAIR: if (!(buffer && buflen && (*buflen == sizeof (int))) || !vcl_session_has_crypto (session)) { rv = VPPCOM_EINVAL; break; } if (!session->ext_config) { vcl_session_alloc_ext_cfg (session, TRANSPORT_ENDPT_EXT_CFG_CRYPTO, sizeof (transport_endpt_ext_cfg_t)); } else if (session->ext_config->type != TRANSPORT_ENDPT_EXT_CFG_CRYPTO) { rv = VPPCOM_EINVAL; break; } session->ext_config->crypto.ckpair_index = *(uint32_t *) buffer; break; case VPPCOM_ATTR_SET_VRF: if (!(buffer && buflen && (*buflen == sizeof (u32)))) { rv = VPPCOM_EINVAL; break; } session->vrf = *(u32 *) buffer; break; case VPPCOM_ATTR_GET_VRF: if (!(buffer && buflen && (*buflen >= sizeof (u32)))) { rv = VPPCOM_EINVAL; break; } *(u32 *) buffer = session->vrf; *buflen = sizeof (u32); break; case VPPCOM_ATTR_GET_DOMAIN: if (!(buffer && buflen && (*buflen >= sizeof (int)))) { rv = VPPCOM_EINVAL; break; } if (session->transport.is_ip4) *(int *) buffer = AF_INET; else *(int *) buffer = AF_INET6; *buflen = sizeof (int); VDBG (2, "VPPCOM_ATTR_GET_DOMAIN: %d, buflen %u", *(int *) buffer, *buflen); break; case VPPCOM_ATTR_SET_ENDPT_EXT_CFG: if (!(buffer && buflen && (*buflen > 0))) { rv = VPPCOM_EINVAL; break; } if (session->ext_config) { rv = VPPCOM_EINVAL; break; } vcl_session_alloc_ext_cfg (session, TRANSPORT_ENDPT_EXT_CFG_NONE, *buflen + sizeof (u32)); clib_memcpy (session->ext_config->data, buffer, *buflen); session->ext_config->len = *buflen; break; case VPPCOM_ATTR_SET_IP_PKTINFO: if (buffer && buflen && (*buflen == sizeof (int)) && !vcl_session_has_attr (session, VCL_SESS_ATTR_IP_PKTINFO)) { if (*(int *) buffer) vcl_session_set_attr (session, VCL_SESS_ATTR_IP_PKTINFO); else vcl_session_clear_attr (session, VCL_SESS_ATTR_IP_PKTINFO); VDBG (2, "VCL_SESS_ATTR_IP_PKTINFO: %d, buflen %d", vcl_session_has_attr (session, VCL_SESS_ATTR_IP_PKTINFO), *buflen); } else rv = VPPCOM_EINVAL; break; case VPPCOM_ATTR_GET_IP_PKTINFO: if (buffer && buflen && (*buflen >= sizeof (int))) { *(int *) buffer = vcl_session_has_attr (session, VCL_SESS_ATTR_IP_PKTINFO); *buflen = sizeof (int); VDBG (2, "VCL_SESS_ATTR_IP_PKTINFO: %d, buflen %d", *(int *) buffer, *buflen); } else rv = VPPCOM_EINVAL; break; default: rv = VPPCOM_EINVAL; break; } return rv; } int vppcom_session_recvfrom (uint32_t session_handle, void *buffer, uint32_t buflen, int flags, vppcom_endpt_t * ep) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *session; int rv = VPPCOM_OK; if (flags == 0) rv = vppcom_session_read (session_handle, buffer, buflen); else if (flags & MSG_PEEK) rv = vppcom_session_peek (session_handle, buffer, buflen); else { VDBG (0, "Unsupport flags for recvfrom %d", flags); return VPPCOM_EAFNOSUPPORT; } if (ep && rv > 0) { session = vcl_session_get_w_handle (wrk, session_handle); if (session->transport.is_ip4) clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy_fast (ep->ip, &session->transport.rmt_ip.ip6, sizeof (ip6_address_t)); ep->is_ip4 = session->transport.is_ip4; ep->port = session->transport.rmt_port; } return rv; } static void vcl_handle_ep_app_tlvs (vcl_session_t *s, vppcom_endpt_t *ep) { vppcom_endpt_tlv_t *tlv = ep->app_tlvs; do { switch (tlv->data_type) { case VCL_UDP_SEGMENT: s->gso_size = *(u16 *) tlv->data; break; case VCL_IP_PKTINFO: clib_memcpy_fast (&s->transport.lcl_ip, (ip4_address_t *) tlv->data, sizeof (ip4_address_t)); break; default: VDBG (0, "Ignorning unsupported app tlv %u", tlv->data_type); break; } tlv = VCL_EP_NEXT_APP_TLV (ep, tlv); } while (tlv); } int vppcom_session_sendto (uint32_t session_handle, void *buffer, uint32_t buflen, int flags, vppcom_endpt_t * ep) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *s; s = vcl_session_get_w_handle (wrk, session_handle); if (PREDICT_FALSE (!s)) return VPPCOM_EBADFD; if (ep) { if (!vcl_session_is_cl (s)) return VPPCOM_EINVAL; s->transport.is_ip4 = ep->is_ip4; s->transport.rmt_port = ep->port; vcl_ip_copy_from_ep (&s->transport.rmt_ip, ep); if (ep->app_tlvs) vcl_handle_ep_app_tlvs (s, ep); /* Session not connected/bound in vpp. Create it by 'connecting' it */ if (PREDICT_FALSE (s->session_state == VCL_STATE_CLOSED)) { u32 session_index = s->session_index; f64 timeout = vcm->cfg.session_timeout; int rv; vcl_send_session_connect (wrk, s); rv = vppcom_wait_for_session_state_change (session_index, VCL_STATE_READY, timeout); if (rv < 0) return rv; s = vcl_session_get (wrk, session_index); } } if (flags) { // TBD check the flags and do the right thing VDBG (2, "handling flags 0x%u (%d) not implemented yet.", flags, flags); } return (vppcom_session_write_inline (wrk, s, buffer, buflen, 1, s->is_dgram ? 1 : 0)); } int vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time) { vcl_worker_t *wrk = vcl_worker_get_current (); f64 timeout = clib_time_now (&wrk->clib_time) + wait_for_time; u32 i, keep_trying = 1; svm_msg_q_msg_t msg; session_event_t *e; int rv, num_ev = 0; VDBG (3, "vp %p, nsids %u, wait_for_time %f", vp, n_sids, wait_for_time); if (!vp) return VPPCOM_EFAULT; do { vcl_session_t *session; /* Dequeue all events and drop all unhandled io events */ while (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_NOWAIT, 0) == 0) { e = svm_msg_q_msg_data (wrk->app_event_queue, &msg); vcl_handle_mq_event (wrk, e); svm_msg_q_free_msg (wrk->app_event_queue, &msg); } vec_reset_length (wrk->unhandled_evts_vector); for (i = 0; i < n_sids; i++) { session = vcl_session_get (wrk, vp[i].sh); if (!session) { vp[i].revents = POLLHUP; num_ev++; continue; } vp[i].revents = 0; if (POLLIN & vp[i].events) { rv = vcl_session_read_ready (session); if (rv > 0) { vp[i].revents |= POLLIN; num_ev++; } else if (rv < 0) { switch (rv) { case VPPCOM_ECONNRESET: vp[i].revents = POLLHUP; break; default: vp[i].revents = POLLERR; break; } num_ev++; } } if (POLLOUT & vp[i].events) { rv = vcl_session_write_ready (session); if (rv > 0) { vp[i].revents |= POLLOUT; num_ev++; } else if (rv < 0) { switch (rv) { case VPPCOM_ECONNRESET: vp[i].revents = POLLHUP; break; default: vp[i].revents = POLLERR; break; } num_ev++; } } if (0) // Note "done:" label used by VCL_SESSION_LOCK_AND_GET() { vp[i].revents = POLLNVAL; num_ev++; } } if (wait_for_time != -1) keep_trying = (clib_time_now (&wrk->clib_time) <= timeout) ? 1 : 0; } while ((num_ev == 0) && keep_trying); return num_ev; } int vppcom_mq_epoll_fd (void) { vcl_worker_t *wrk = vcl_worker_get_current (); return wrk->mqs_epfd; } int vppcom_session_index (vcl_session_handle_t session_handle) { return session_handle & 0xFFFFFF; } int vppcom_session_worker (vcl_session_handle_t session_handle) { return session_handle >> 24; } int vppcom_worker_register (void) { if (!vcl_worker_alloc_and_init ()) return VPPCOM_EEXIST; if (vcl_worker_register_with_vpp ()) return VPPCOM_EEXIST; return VPPCOM_OK; } void vppcom_worker_unregister (void) { vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ ); vcl_set_worker_index (~0); } void vppcom_worker_index_set (int index) { vcl_set_worker_index (index); } int vppcom_worker_index (void) { return vcl_get_worker_index (); } int vppcom_worker_mqs_epfd (void) { vcl_worker_t *wrk = vcl_worker_get_current (); if (!vcm->cfg.use_mq_eventfd) return -1; return wrk->mqs_epfd; } int vppcom_session_is_connectable_listener (uint32_t session_handle) { vcl_session_t *session; vcl_worker_t *wrk = vcl_worker_get_current (); session = vcl_session_get_w_handle (wrk, session_handle); if (!session) return VPPCOM_EBADFD; return vcl_session_is_connectable_listener (wrk, session); } int vppcom_session_listener (uint32_t session_handle) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *listen_session, *session; session = vcl_session_get_w_handle (wrk, session_handle); if (!session) return VPPCOM_EBADFD; if (session->listener_index == VCL_INVALID_SESSION_INDEX) return VPPCOM_EBADFD; listen_session = vcl_session_get_w_handle (wrk, session->listener_index); if (!listen_session) return VPPCOM_EBADFD; return vcl_session_handle (listen_session); } int vppcom_session_n_accepted (uint32_t session_handle) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *session = vcl_session_get_w_handle (wrk, session_handle); if (!session) return VPPCOM_EBADFD; return session->n_accepted_sessions; } const char * vppcom_proto_str (vppcom_proto_t proto) { char const *proto_str; switch (proto) { case VPPCOM_PROTO_TCP: proto_str = "TCP"; break; case VPPCOM_PROTO_UDP: proto_str = "UDP"; break; case VPPCOM_PROTO_TLS: proto_str = "TLS"; break; case VPPCOM_PROTO_QUIC: proto_str = "QUIC"; break; case VPPCOM_PROTO_DTLS: proto_str = "DTLS"; break; case VPPCOM_PROTO_SRTP: proto_str = "SRTP"; break; default: proto_str = "UNKNOWN"; break; } return proto_str; } const char * vppcom_retval_str (int retval) { char const *st; switch (retval) { case VPPCOM_OK: st = "VPPCOM_OK"; break; case VPPCOM_EAGAIN: st = "VPPCOM_EAGAIN"; break; case VPPCOM_EFAULT: st = "VPPCOM_EFAULT"; break; case VPPCOM_ENOMEM: st = "VPPCOM_ENOMEM"; break; case VPPCOM_EINVAL: st = "VPPCOM_EINVAL"; break; case VPPCOM_EBADFD: st = "VPPCOM_EBADFD"; break; case VPPCOM_EAFNOSUPPORT: st = "VPPCOM_EAFNOSUPPORT"; break; case VPPCOM_ECONNABORTED: st = "VPPCOM_ECONNABORTED"; break; case VPPCOM_ECONNRESET: st = "VPPCOM_ECONNRESET"; break; case VPPCOM_ENOTCONN: st = "VPPCOM_ENOTCONN"; break; case VPPCOM_ECONNREFUSED: st = "VPPCOM_ECONNREFUSED"; break; case VPPCOM_ETIMEDOUT: st = "VPPCOM_ETIMEDOUT"; break; case VPPCOM_EADDRINUSE: st = "VPPCOM_EADDRINUSE"; break; default: st = "UNKNOWN_STATE"; break; } return st; } int vppcom_add_cert_key_pair (vppcom_cert_key_pair_t *ckpair) { if (vcm->cfg.vpp_app_socket_api) return vcl_sapi_add_cert_key_pair (ckpair); else return vcl_bapi_add_cert_key_pair (ckpair); } int vppcom_del_cert_key_pair (uint32_t ckpair_index) { if (vcm->cfg.vpp_app_socket_api) return vcl_sapi_del_cert_key_pair (ckpair_index); else return vcl_bapi_del_cert_key_pair (ckpair_index); } int vppcom_session_get_error (uint32_t session_handle) { vcl_worker_t *wrk = vcl_worker_get_current (); vcl_session_t *session = 0; session = vcl_session_get_w_handle (wrk, session_handle); if (!session) return VPPCOM_EBADFD; if (PREDICT_FALSE (session->flags & VCL_SESSION_F_IS_VEP)) { VWRN ("epoll session %u! will not have connect", session->session_index); return VPPCOM_EBADFD; } if (session->vpp_error == SESSION_E_PORTINUSE) return VPPCOM_EADDRINUSE; else if (session->vpp_error == SESSION_E_REFUSED) return VPPCOM_ECONNREFUSED; else if (session->vpp_error != SESSION_E_NONE) return VPPCOM_EFAULT; else return VPPCOM_OK; } int vppcom_worker_is_detached (void) { vcl_worker_t *wrk = vcl_worker_get_current (); if (!vcm->cfg.use_mq_eventfd) return VPPCOM_ENOTSUP; return wrk->api_client_handle == ~0; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */