| /* |
| * 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 int |
| vcl_segment_is_not_mounted (vcl_worker_t * wrk, u64 segment_handle) |
| { |
| u32 segment_index; |
| |
| if (segment_handle == VCL_INVALID_SEGMENT_HANDLE) |
| return 0; |
| |
| segment_index = vcl_segment_table_lookup (segment_handle); |
| if (segment_index != VCL_INVALID_SEGMENT_INDEX) |
| return 0; |
| |
| return 1; |
| } |
| |
| static inline int |
| vcl_mq_dequeue_batch (vcl_worker_t * wrk, svm_msg_q_t * mq, u32 n_max_msg) |
| { |
| svm_msg_q_msg_t *msg; |
| u32 n_msgs; |
| int i; |
| |
| n_msgs = clib_min (svm_msg_q_size (mq), n_max_msg); |
| for (i = 0; i < n_msgs; i++) |
| { |
| vec_add2 (wrk->mq_msg_vector, msg, 1); |
| svm_msg_q_sub_w_lock (mq, msg); |
| } |
| return n_msgs; |
| } |
| |
| const char * |
| vppcom_session_state_str (vcl_session_state_t state) |
| { |
| char *st; |
| |
| switch (state) |
| { |
| case STATE_CLOSED: |
| st = "STATE_CLOSED"; |
| break; |
| |
| case STATE_CONNECT: |
| st = "STATE_CONNECT"; |
| break; |
| |
| case STATE_LISTEN: |
| st = "STATE_LISTEN"; |
| break; |
| |
| case STATE_ACCEPT: |
| st = "STATE_ACCEPT"; |
| break; |
| |
| case STATE_VPP_CLOSING: |
| st = "STATE_VPP_CLOSING"; |
| break; |
| |
| case STATE_DISCONNECT: |
| st = "STATE_DISCONNECT"; |
| break; |
| |
| case STATE_DETACHED: |
| st = "STATE_DETACHED"; |
| break; |
| |
| case STATE_UPDATED: |
| st = "STATE_UPDATED"; |
| break; |
| |
| case STATE_LISTEN_NO_MQ: |
| st = "STATE_LISTEN_NO_MQ"; |
| break; |
| |
| default: |
| st = "UNKNOWN_STATE"; |
| break; |
| } |
| |
| return st; |
| } |
| |
| u8 * |
| format_ip4_address (u8 * s, va_list * args) |
| { |
| u8 *a = va_arg (*args, u8 *); |
| return format (s, "%d.%d.%d.%d", a[0], a[1], a[2], a[3]); |
| } |
| |
| u8 * |
| format_ip6_address (u8 * s, va_list * args) |
| { |
| ip6_address_t *a = va_arg (*args, ip6_address_t *); |
| u32 i, i_max_n_zero, max_n_zeros, i_first_zero, n_zeros, last_double_colon; |
| |
| i_max_n_zero = ARRAY_LEN (a->as_u16); |
| max_n_zeros = 0; |
| i_first_zero = i_max_n_zero; |
| n_zeros = 0; |
| for (i = 0; i < ARRAY_LEN (a->as_u16); i++) |
| { |
| u32 is_zero = a->as_u16[i] == 0; |
| if (is_zero && i_first_zero >= ARRAY_LEN (a->as_u16)) |
| { |
| i_first_zero = i; |
| n_zeros = 0; |
| } |
| n_zeros += is_zero; |
| if ((!is_zero && n_zeros > max_n_zeros) |
| || (i + 1 >= ARRAY_LEN (a->as_u16) && n_zeros > max_n_zeros)) |
| { |
| i_max_n_zero = i_first_zero; |
| max_n_zeros = n_zeros; |
| i_first_zero = ARRAY_LEN (a->as_u16); |
| n_zeros = 0; |
| } |
| } |
| |
| last_double_colon = 0; |
| for (i = 0; i < ARRAY_LEN (a->as_u16); i++) |
| { |
| if (i == i_max_n_zero && max_n_zeros > 1) |
| { |
| s = format (s, "::"); |
| i += max_n_zeros - 1; |
| last_double_colon = 1; |
| } |
| else |
| { |
| s = format (s, "%s%x", |
| (last_double_colon || i == 0) ? "" : ":", |
| clib_net_to_host_u16 (a->as_u16[i])); |
| last_double_colon = 0; |
| } |
| } |
| |
| return s; |
| } |
| |
| /* Format an IP46 address. */ |
| u8 * |
| format_ip46_address (u8 * s, va_list * args) |
| { |
| ip46_address_t *ip46 = va_arg (*args, ip46_address_t *); |
| ip46_type_t type = va_arg (*args, ip46_type_t); |
| int is_ip4 = 1; |
| |
| switch (type) |
| { |
| case IP46_TYPE_ANY: |
| is_ip4 = ip46_address_is_ip4 (ip46); |
| break; |
| case IP46_TYPE_IP4: |
| is_ip4 = 1; |
| break; |
| case IP46_TYPE_IP6: |
| is_ip4 = 0; |
| break; |
| } |
| |
| return is_ip4 ? |
| format (s, "%U", format_ip4_address, &ip46->ip4) : |
| format (s, "%U", format_ip6_address, &ip46->ip6); |
| } |
| |
| /* |
| * VPPCOM Utility Functions |
| */ |
| |
| static 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->my_client_index; |
| 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; |
| if (s->flags & VCL_SESSION_F_CONNECTED) |
| mp->flags = TRANSPORT_CFG_F_CONNECTED; |
| app_send_ctrl_evt_to_vpp (mq, app_evt); |
| } |
| |
| 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->my_client_index; |
| mp->context = s->session_index; |
| 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; |
| if (s->flags & VCL_SESSION_F_CONNECTED) |
| mp->flags |= TRANSPORT_CFG_F_CONNECTED; |
| app_send_ctrl_evt_to_vpp (mq, app_evt); |
| } |
| |
| 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->my_client_index; |
| 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_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->my_client_index; |
| 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->my_client_index; |
| 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 (svm_msg_q_t * mq, u32 context, |
| session_handle_t handle, int retval) |
| { |
| app_session_evt_t _app_evt, *app_evt = &_app_evt; |
| session_disconnected_reply_msg_t *rmp; |
| app_alloc_ctrl_evt_to_vpp (mq, app_evt, |
| SESSION_CTRL_EVT_DISCONNECTED_REPLY); |
| rmp = (session_disconnected_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_reset_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_reset_reply_msg_t *rmp; |
| app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_RESET_REPLY); |
| rmp = (session_reset_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); |
| } |
| |
| 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; |
| svm_msg_q_t *mq; |
| |
| mq = vcl_session_vpp_evt_q (wrk, s); |
| app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_WORKER_UPDATE); |
| mp = (session_worker_update_msg_t *) app_evt->evt->data; |
| mp->client_index = wrk->my_client_index; |
| mp->handle = s->vpp_handle; |
| mp->req_wrk_index = wrk->vpp_wrk_index; |
| mp->wrk_index = wrk_index; |
| app_send_ctrl_evt_to_vpp (mq, app_evt); |
| } |
| |
| 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_fifo_t *rx_fifo, *tx_fifo; |
| u32 vpp_wrk_index; |
| 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_is_not_mounted (wrk, mp->segment_handle)) |
| { |
| VDBG (0, "ERROR: segment for session %u is not mounted!", |
| session->session_index); |
| goto error; |
| } |
| |
| rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *); |
| tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *); |
| session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address, |
| svm_msg_q_t *); |
| rx_fifo->client_session_index = session->session_index; |
| tx_fifo->client_session_index = session->session_index; |
| rx_fifo->client_thread_index = vcl_get_worker_index (); |
| tx_fifo->client_thread_index = vcl_get_worker_index (); |
| vpp_wrk_index = tx_fifo->master_thread_index; |
| vec_validate (wrk->vpp_event_queues, vpp_wrk_index); |
| wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q; |
| |
| session->vpp_handle = mp->handle; |
| session->vpp_thread_index = rx_fifo->master_thread_index; |
| session->rx_fifo = rx_fifo; |
| session->tx_fifo = tx_fifo; |
| |
| session->session_state = STATE_ACCEPT; |
| 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 = listen_session->transport.lcl_port; |
| session->transport.lcl_ip = listen_session->transport.lcl_ip; |
| session->session_type = listen_session->session_type; |
| session->is_dgram = vcl_proto_is_dgram (session->session_type); |
| session->listener_index = listen_session->session_index; |
| listen_session->n_accepted_sessions++; |
| |
| VDBG (1, "session %u [0x%llx]: client accept request from %s address %U" |
| " port %d queue %p!", session->session_index, mp->handle, |
| mp->rmt.is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &mp->rmt.ip, |
| mp->rmt.is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, |
| clib_net_to_host_u16 (mp->rmt.port), session->vpp_evt_q); |
| 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: |
| evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *); |
| 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) |
| { |
| u32 session_index, vpp_wrk_index; |
| svm_fifo_t *rx_fifo, *tx_fifo; |
| vcl_session_t *session = 0; |
| |
| session_index = mp->context; |
| session = vcl_session_get (wrk, session_index); |
| if (!session) |
| { |
| VDBG (0, "ERROR: vpp handle 0x%llx has no session index (%u)!", |
| mp->handle, session_index); |
| return VCL_INVALID_SESSION_INDEX; |
| } |
| if (mp->retval) |
| { |
| VDBG (0, "ERROR: session index %u: connect failed! %U", |
| session_index, format_session_error, mp->retval); |
| session->session_state = STATE_DETACHED | STATE_DISCONNECT; |
| session->vpp_handle = mp->handle; |
| return session_index; |
| } |
| |
| session->vpp_handle = mp->handle; |
| session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address, |
| svm_msg_q_t *); |
| rx_fifo = uword_to_pointer (mp->server_rx_fifo, svm_fifo_t *); |
| tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *); |
| if (vcl_segment_is_not_mounted (wrk, mp->segment_handle)) |
| { |
| VDBG (0, "segment for session %u is not mounted!", |
| session->session_index); |
| session->session_state = STATE_DETACHED | STATE_DISCONNECT; |
| vcl_send_session_disconnect (wrk, session); |
| return session_index; |
| } |
| |
| rx_fifo->client_session_index = session_index; |
| tx_fifo->client_session_index = session_index; |
| rx_fifo->client_thread_index = vcl_get_worker_index (); |
| tx_fifo->client_thread_index = vcl_get_worker_index (); |
| |
| vpp_wrk_index = tx_fifo->master_thread_index; |
| vec_validate (wrk->vpp_event_queues, vpp_wrk_index); |
| wrk->vpp_event_queues[vpp_wrk_index] = session->vpp_evt_q; |
| |
| if (mp->ct_rx_fifo) |
| { |
| session->ct_rx_fifo = uword_to_pointer (mp->ct_rx_fifo, svm_fifo_t *); |
| session->ct_tx_fifo = uword_to_pointer (mp->ct_tx_fifo, svm_fifo_t *); |
| if (vcl_segment_is_not_mounted (wrk, mp->ct_segment_handle)) |
| { |
| VDBG (0, "ct segment for session %u is not mounted!", |
| session->session_index); |
| session->session_state = STATE_DETACHED | STATE_DISCONNECT; |
| vcl_send_session_disconnect (wrk, session); |
| return session_index; |
| } |
| } |
| |
| session->rx_fifo = rx_fifo; |
| session->tx_fifo = tx_fifo; |
| session->vpp_thread_index = rx_fifo->master_thread_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; |
| session->session_state = STATE_CONNECT; |
| |
| /* Add it to lookup table */ |
| vcl_session_table_add_vpp_handle (wrk, mp->handle, session_index); |
| |
| VDBG (1, "session %u [0x%llx] connected! rx_fifo %p, refcnt %d, tx_fifo %p," |
| " refcnt %d", session_index, mp->handle, session->rx_fifo, |
| session->rx_fifo->refcnt, session->tx_fifo, session->tx_fifo->refcnt); |
| |
| 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 == STATE_LISTEN) |
| { |
| |
| 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 != STATE_CLOSED) |
| session->session_state = STATE_DISCONNECT; |
| VDBG (0, "reset session %u [0x%llx]", 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 = STATE_DETACHED; |
| session->vpp_handle = mp->handle; |
| return sid; |
| } |
| else |
| { |
| VDBG (0, "ERROR: 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 = STATE_LISTEN; |
| |
| session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *); |
| vec_validate (wrk->vpp_event_queues, 0); |
| wrk->vpp_event_queues[0] = session->vpp_evt_q; |
| |
| if (vcl_session_is_cl (session)) |
| { |
| svm_fifo_t *rx_fifo, *tx_fifo; |
| session->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *); |
| rx_fifo = uword_to_pointer (mp->rx_fifo, svm_fifo_t *); |
| rx_fifo->client_session_index = sid; |
| tx_fifo = uword_to_pointer (mp->tx_fifo, svm_fifo_t *); |
| tx_fifo->client_session_index = sid; |
| session->rx_fifo = rx_fifo; |
| session->tx_fifo = tx_fifo; |
| } |
| |
| 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 != STATE_DISCONNECT) |
| { |
| /* Connected udp listener */ |
| if (s->session_type == VPPCOM_PROTO_UDP |
| && s->session_state == 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; |
| |
| s = vcl_session_get_w_vpp_handle (wrk, mp->handle); |
| if (!s) |
| { |
| VDBG (0, "Migrated notification with wrong handle %llx", mp->handle); |
| return; |
| } |
| |
| s->vpp_thread_index = mp->vpp_thread_index; |
| s->vpp_handle = mp->new_handle; |
| s->vpp_evt_q = uword_to_pointer (mp->vpp_evt_q, svm_msg_q_t *); |
| |
| vec_validate (wrk->vpp_event_queues, s->vpp_thread_index); |
| wrk->vpp_event_queues[s->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->master_session_index, |
| SESSION_IO_EVT_TX, SVM_Q_WAIT); |
| |
| VDBG (0, "Migrated 0x%lx to thread %u 0x%lx", mp->handle, |
| s->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) |
| { |
| VDBG (0, "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 == STATE_CLOSED) |
| return 0; |
| |
| /* Caught a disconnect before actually accepting the session */ |
| if (session->session_state == STATE_LISTEN) |
| { |
| 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 != STATE_DISCONNECT) |
| session->session_state = STATE_VPP_CLOSING; |
| |
| return session; |
| } |
| |
| 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) |
| { |
| VDBG (0, "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 */ |
| if (session->session_state == STATE_VPP_CLOSING) |
| vcl_session_cleanup (wrk, session, vcl_session_handle (session), |
| 1 /* do_disconnect */ ); |
| return; |
| } |
| |
| vcl_session_table_del_vpp_handle (wrk, msg->handle); |
| /* Should not happen. App did not close the connection so don't free it. */ |
| if (session->session_state != STATE_CLOSED) |
| { |
| VDBG (0, "app did not close session %d", session->session_index); |
| session->session_state = STATE_DETACHED; |
| session->vpp_handle = VCL_INVALID_SESSION_HANDLE; |
| 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 (vcl_segment_is_not_mounted (wrk, msg->segment_handle)) |
| { |
| clib_warning ("segment for session %u is not mounted!", |
| s->session_index); |
| return; |
| } |
| |
| if (s->rx_fifo) |
| { |
| s->rx_fifo = uword_to_pointer (msg->rx_fifo, svm_fifo_t *); |
| s->tx_fifo = uword_to_pointer (msg->tx_fifo, svm_fifo_t *); |
| s->rx_fifo->client_session_index = s->session_index; |
| s->tx_fifo->client_session_index = s->session_index; |
| s->rx_fifo->client_thread_index = wrk->wrk_index; |
| s->tx_fifo->client_thread_index = wrk->wrk_index; |
| } |
| s->session_state = STATE_UPDATED; |
| |
| VDBG (0, "session %u[0x%llx] moved to worker %u", s->session_index, |
| s->vpp_handle, wrk->wrk_index); |
| } |
| |
| 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) |
| { |
| vl_socket_client_recv_fd_msg2 (&wrk->bapi_sock_ctx, &fd, 1, 5); |
| 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: %d", msg->segment_handle); |
| } |
| |
| static int |
| vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e) |
| { |
| session_disconnected_msg_t *disconnected_msg; |
| vcl_session_t *session; |
| |
| switch (e->event_type) |
| { |
| case SESSION_IO_EVT_RX: |
| case SESSION_IO_EVT_TX: |
| session = vcl_session_get (wrk, e->session_index); |
| if (!session || !(session->session_state & STATE_OPEN)) |
| break; |
| vec_add1 (wrk->unhandled_evts_vector, *e); |
| break; |
| case SESSION_CTRL_EVT_ACCEPTED: |
| vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data); |
| break; |
| case SESSION_CTRL_EVT_CONNECTED: |
| vcl_session_connected_handler (wrk, |
| (session_connected_msg_t *) e->data); |
| break; |
| case SESSION_CTRL_EVT_DISCONNECTED: |
| disconnected_msg = (session_disconnected_msg_t *) e->data; |
| session = vcl_session_disconnected_handler (wrk, disconnected_msg); |
| if (!session) |
| break; |
| VDBG (0, "disconnected session %u [0x%llx]", session->session_index, |
| session->vpp_handle); |
| break; |
| case SESSION_CTRL_EVT_RESET: |
| vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data); |
| break; |
| case SESSION_CTRL_EVT_BOUND: |
| vcl_session_bound_handler (wrk, (session_bound_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; |
| 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 & 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, |
| vppcom_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, STATE_UPDATED, 5); |
| s->session_state = state; |
| } |
| vec_reset_length (wrk->pending_session_wrk_updates); |
| } |
| |
| void |
| vcl_flush_mq_events (void) |
| { |
| vcl_worker_t *wrk = vcl_worker_get_current (); |
| svm_msg_q_msg_t *msg; |
| session_event_t *e; |
| svm_msg_q_t *mq; |
| int i; |
| |
| mq = wrk->app_event_queue; |
| svm_msg_q_lock (mq); |
| vcl_mq_dequeue_batch (wrk, mq, ~0); |
| svm_msg_q_unlock (mq); |
| |
| 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); |
| } |
| |
| static int |
| vppcom_app_session_enable (void) |
| { |
| int rv; |
| |
| if (vcm->app_state != STATE_APP_ENABLED) |
| { |
| vppcom_send_session_enable_disable (1 /* is_enabled == TRUE */ ); |
| rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED); |
| if (PREDICT_FALSE (rv)) |
| { |
| VDBG (0, "application session enable timed out! returning %d (%s)", |
| rv, vppcom_retval_str (rv)); |
| return rv; |
| } |
| } |
| return VPPCOM_OK; |
| } |
| |
| static int |
| vppcom_app_attach (void) |
| { |
| int rv; |
| |
| vppcom_app_send_attach (); |
| rv = vcl_wait_for_app_state_change (STATE_APP_ATTACHED); |
| if (PREDICT_FALSE (rv)) |
| { |
| VDBG (0, "application attach timed out! returning %d (%s)", rv, |
| vppcom_retval_str (rv)); |
| return rv; |
| } |
| |
| return VPPCOM_OK; |
| } |
| |
| 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, |
| session->vpp_handle, -1); |
| } |
| clib_fifo_free (session->accept_evts_fifo); |
| |
| vcl_send_session_unlisten (wrk, session); |
| |
| VDBG (1, "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 = STATE_DISCONNECT; |
| |
| return VPPCOM_OK; |
| } |
| |
| static int |
| vppcom_session_disconnect (u32 session_handle) |
| { |
| vcl_worker_t *wrk = vcl_worker_get_current (); |
| svm_msg_q_t *vpp_evt_q; |
| 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] state 0x%x (%s)", session->session_index, |
| vpp_handle, state, vppcom_session_state_str (state)); |
| |
| if (PREDICT_FALSE (state & STATE_LISTEN)) |
| { |
| VDBG (0, "ERROR: Cannot disconnect a listen socket!"); |
| return VPPCOM_EBADFD; |
| } |
| |
| if (state & STATE_VPP_CLOSING) |
| { |
| vpp_evt_q = vcl_session_vpp_evt_q (wrk, session); |
| vcl_send_session_disconnected_reply (vpp_evt_q, wrk->my_client_index, |
| vpp_handle, 0); |
| VDBG (1, "session %u [0x%llx]: sending disconnect REPLY...", |
| session->session_index, vpp_handle); |
| } |
| else |
| { |
| 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); |
| listen_session->n_accepted_sessions--; |
| } |
| |
| 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); |
| } |
| |
| /* |
| * 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); |
| vppcom_init_error_string_table (); |
| fifo_segment_main_init (&vcm->segment_main, vcl_cfg->segment_baseva, |
| 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); |
| |
| /* Allocate default worker */ |
| vcl_worker_alloc_and_init (); |
| |
| /* API hookup and connect to VPP */ |
| vcl_elog_init (vcm); |
| vcm->app_state = STATE_APP_START; |
| rv = vppcom_connect_to_vpp (app_name); |
| if (rv) |
| { |
| VERR ("couldn't connect to VPP!"); |
| return rv; |
| } |
| VDBG (0, "sending session enable"); |
| rv = vppcom_app_session_enable (); |
| if (rv) |
| { |
| VERR ("vppcom_app_session_enable() failed!"); |
| return rv; |
| } |
| |
| VDBG (0, "sending app attach"); |
| rv = vppcom_app_attach (); |
| if (rv) |
| { |
| VERR ("vppcom_app_attach() failed!"); |
| return rv; |
| } |
| |
| VDBG (0, "app_name '%s', my_client_index %d (0x%x)", app_name, |
| vcm->workers[0].my_client_index, vcm->workers[0].my_client_index); |
| |
| return VPPCOM_OK; |
| } |
| |
| void |
| vppcom_app_destroy (void) |
| { |
| vcl_worker_t *wrk, *current_wrk; |
| struct dlmallinfo mi; |
| mspace 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_send_app_detach (current_wrk); |
| vppcom_disconnect_from_vpp (); |
| vcl_worker_cleanup (current_wrk, 0 /* notify vpp */ ); |
| |
| vcl_elog_stop (vcm); |
| |
| /* |
| * Free the heap and fix vcm |
| */ |
| heap = clib_mem_get_heap (); |
| mi = mspace_mallinfo (heap); |
| munmap (mspace_least_addr (heap), mi.arena); |
| |
| 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 = STATE_CLOSED; |
| session->vpp_handle = ~0; |
| session->is_dgram = vcl_proto_is_dgram (proto); |
| |
| if (is_nonblocking) |
| VCL_SESS_ATTR_SET (session->attr, 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); |
| } |
| |
| int |
| vcl_session_cleanup (vcl_worker_t * wrk, vcl_session_t * session, |
| vcl_session_handle_t sh, u8 do_disconnect) |
| { |
| vcl_session_state_t state; |
| u32 next_sh, vep_sh; |
| int rv = VPPCOM_OK; |
| u64 vpp_handle; |
| u8 is_vep; |
| |
| is_vep = session->is_vep; |
| next_sh = session->vep.next_sh; |
| vep_sh = session->vep.vep_sh; |
| state = session->session_state; |
| vpp_handle = session->vpp_handle; |
| |
| VDBG (1, "session %u [0x%llx] closing", session->session_index, vpp_handle); |
| |
| if (is_vep) |
| { |
| 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)", vpp_handle, next_sh, vep_sh, rv, |
| vppcom_retval_str (rv)); |
| |
| next_sh = session->vep.next_sh; |
| } |
| goto cleanup; |
| } |
| |
| if (session->is_vep_session) |
| { |
| rv = vppcom_epoll_ctl (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)", session->session_index, vpp_handle, |
| vep_sh, rv, vppcom_retval_str (rv)); |
| } |
| |
| if (!do_disconnect) |
| { |
| VDBG (1, "session %u [0x%llx] disconnect skipped", |
| session->session_index, vpp_handle); |
| goto cleanup; |
| } |
| |
| if (state & STATE_LISTEN) |
| { |
| rv = vppcom_session_unbind (sh); |
| if (PREDICT_FALSE (rv < 0)) |
| VDBG (0, "session %u [0x%llx]: listener unbind failed! " |
| "rv %d (%s)", session->session_index, vpp_handle, rv, |
| vppcom_retval_str (rv)); |
| return rv; |
| } |
| else if ((state & STATE_OPEN) |
| || (vcl_session_is_connectable_listener (wrk, session))) |
| { |
| rv = vppcom_session_disconnect (sh); |
| if (PREDICT_FALSE (rv < 0)) |
| VDBG (0, "ERROR: session %u [0x%llx]: disconnect failed!" |
| " rv %d (%s)", session->session_index, vpp_handle, |
| rv, vppcom_retval_str (rv)); |
| } |
| else if (state == STATE_DISCONNECT) |
| { |
| svm_msg_q_t *mq = vcl_session_vpp_evt_q (wrk, session); |
| vcl_send_session_reset_reply (mq, wrk->my_client_index, |
| session->vpp_handle, 0); |
| } |
| else if (state == STATE_DETACHED) |
| { |
| /* Should not happen. VPP cleaned up before app confirmed close */ |
| VDBG (0, "vpp freed session %d before close", session->session_index); |
| goto free_session; |
| } |
| |
| session->session_state = STATE_CLOSED; |
| |
| /* Session is removed only after vpp confirms the disconnect */ |
| return rv; |
| |
| cleanup: |
| vcl_session_table_del_vpp_handle (wrk, vpp_handle); |
| free_session: |
| vcl_session_free (wrk, session); |
| vcl_evt (VCL_EVT_CLOSE, session, 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->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", |
| 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->is_vep) |
| return VPPCOM_EBADFD; |
| |
| if (q_len == 0 || q_len == ~0) |
| q_len = vcm->cfg.listen_queue_size; |
| |
| listen_vpp_handle = listen_session->vpp_handle; |
| if (listen_session->session_state & 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, |
| 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_session_tls_add_cert (uint32_t session_handle, char *cert, |
| uint32_t cert_len) |
| { |
| |
| 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 (cert_len == 0 || cert_len == ~0) |
| return VPPCOM_EBADFD; |
| |
| /* |
| * Send listen request to vpp and wait for reply |
| */ |
| vppcom_send_application_tls_cert_add (session, cert, cert_len); |
| vcm->app_state = STATE_APP_ADDING_TLS_DATA; |
| vcl_wait_for_app_state_change (STATE_APP_READY); |
| return VPPCOM_OK; |
| |
| } |
| |
| int |
| vppcom_session_tls_add_key (uint32_t session_handle, char *key, |
| uint32_t key_len) |
| { |
| |
| 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 (key_len == 0 || key_len == ~0) |
| return VPPCOM_EBADFD; |
| |
| vppcom_send_application_tls_key_add (session, key, key_len); |
| vcm->app_state = STATE_APP_ADDING_TLS_DATA; |
| vcl_wait_for_app_state_change (STATE_APP_READY); |
| return VPPCOM_OK; |
| } |
| |
| static int |
| validate_args_session_accept_ (vcl_worker_t * wrk, vcl_session_t * ls) |
| { |
| if (ls->is_vep) |
| { |
| VDBG (0, "ERROR: cannot accept on epoll session %u!", |
| ls->session_index); |
| return VPPCOM_EBADFD; |
| } |
| |
| if ((ls->session_state != STATE_LISTEN) |
| && (!vcl_session_is_connectable_listener (wrk, ls))) |
| { |
| VDBG (0, |
| "ERROR: session [0x%llx]: not in listen state! state 0x%x" |
| " (%s)", ls->vpp_handle, ls->session_state, |
| vppcom_session_state_str (ls->session_state)); |
| return VPPCOM_EBADFD; |
| } |
| 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 |
| return 1; |
| return 0; |
| } |
| |
| int |
| vppcom_session_accept (uint32_t listen_session_handle, vppcom_endpt_t * ep, |
| uint32_t flags) |
| { |
| u32 client_session_index = ~0, listen_session_index, accept_flags = 0; |
| vcl_worker_t *wrk = vcl_worker_get_current (); |
| session_accepted_msg_t accepted_msg; |
| vcl_session_t *listen_session = 0; |
| vcl_session_t *client_session = 0; |
| vcl_session_msg_t *evt; |
| svm_msg_q_msg_t msg; |
| session_event_t *e; |
| u8 is_nonblocking; |
| int rv; |
| |
| listen_session = vcl_session_get_w_handle (wrk, listen_session_handle); |
| if (!listen_session) |
| return VPPCOM_EBADFD; |
| |
| listen_session_index = listen_session->session_index; |
| if ((rv = validate_args_session_accept_ (wrk, listen_session))) |
| return rv; |
| |
| if (clib_fifo_elts (listen_session->accept_evts_fifo)) |
| { |
| clib_fifo_sub2 (listen_session->accept_evts_fifo, evt); |
| accept_flags = evt->flags; |
| accepted_msg = evt->accepted_msg; |
| goto handle; |
| } |
| |
| is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr, |
| VCL_SESS_ATTR_NONBLOCK); |
| while (1) |
| { |
| if (svm_msg_q_is_empty (wrk->app_event_queue) && is_nonblocking) |
| return VPPCOM_EAGAIN; |
| |
| if (svm_msg_q_sub (wrk->app_event_queue, &msg, SVM_Q_WAIT, 0)) |
| return VPPCOM_EAGAIN; |
| |
| e = svm_msg_q_msg_data (wrk->app_event_queue, &msg); |
| if (e->event_type != SESSION_CTRL_EVT_ACCEPTED) |
| { |
| vcl_handle_mq_event (wrk, e); |
| svm_msg_q_free_msg (wrk->app_event_queue, &msg); |
| continue; |
| } |
| clib_memcpy_fast (&accepted_msg, e->data, sizeof (accepted_msg)); |
| svm_msg_q_free_msg (wrk->app_event_queue, &msg); |
| break; |
| } |
| |
| handle: |
| |
| client_session_index = vcl_session_accepted_handler (wrk, &accepted_msg, |
| listen_session_index); |
| if (client_session_index == VCL_INVALID_SESSION_INDEX) |
| return VPPCOM_ECONNABORTED; |
| |
| listen_session = vcl_session_get (wrk, listen_session_index); |
| client_session = vcl_session_get (wrk, client_session_index); |
| |
| if (flags & O_NONBLOCK) |
| VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK); |
| |
| VDBG (1, "listener %u [0x%llx]: Got a connect request! session %u [0x%llx]," |
| " flags %d, is_nonblocking %u", listen_session->session_index, |
| listen_session->vpp_handle, client_session_index, |
| client_session->vpp_handle, flags, |
| VCL_SESS_ATTR_TEST (client_session->attr, 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", listen_session_handle, listen_session->vpp_handle, |
| client_session_index, client_session->vpp_handle, |
| 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), |
| 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, listen_session, |
| client_session_index); |
| |
| /* |
| * Session might have been closed already |
| */ |
| if (accept_flags) |
| { |
| if (accept_flags & VCL_ACCEPTED_F_CLOSED) |
| client_session->session_state = STATE_VPP_CLOSING; |
| else if (accept_flags & VCL_ACCEPTED_F_RESET) |
| client_session->session_state = 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->is_vep)) |
| { |
| VDBG (0, "ERROR: cannot connect epoll session %u!", |
| session->session_index); |
| return VPPCOM_EBADFD; |
| } |
| |
| if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN)) |
| { |
| VDBG (0, "session handle %u [0x%llx]: session already " |
| "connected to %s %U port %d proto %s, state 0x%x (%s)", |
| session_handle, session->vpp_handle, |
| session->transport.is_ip4 ? "IPv4" : "IPv6", 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), session->session_state, |
| vppcom_session_state_str (session->session_state)); |
| return VPPCOM_OK; |
| } |
| |
| /* Attempt to connect a connectionless listener */ |
| if (PREDICT_FALSE (session->session_state & STATE_LISTEN)) |
| { |
| if (session->session_type != VPPCOM_PROTO_UDP) |
| return VPPCOM_EINVAL; |
| vcl_send_session_unlisten (wrk, session); |
| session->session_state = 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 handle %u (%s): connecting to peer %s %U " |
| "port %d proto %s", session_handle, |
| vppcom_session_state_str (session->session_state), |
| session->transport.is_ip4 ? "IPv4" : "IPv6", |
| 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_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK)) |
| return VPPCOM_EINPROGRESS; |
| |
| /* |
| * Wait for reply from vpp if blocking |
| */ |
| rv = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT, |
| 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->is_vep)) |
| { |
| VDBG (0, "ERROR: cannot connect epoll session %u!", |
| session->session_index); |
| return VPPCOM_EBADFD; |
| } |
| |
| if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN)) |
| { |
| 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, |
| vppcom_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, STATE_CONNECT, |
| 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 u8 |
| vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct) |
| { |
| return (e->event_type == SESSION_IO_EVT_RX && e->session_index == sid); |
| } |
| |
| 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 n_read = 0, is_nonblocking; |
| vcl_session_t *s = 0; |
| svm_fifo_t *rx_fifo; |
| svm_msg_q_msg_t msg; |
| session_event_t *e; |
| svm_msg_q_t *mq; |
| u8 is_ct; |
| |
| if (PREDICT_FALSE (!buf)) |
| return VPPCOM_EINVAL; |
| |
| s = vcl_session_get_w_handle (wrk, session_handle); |
| if (PREDICT_FALSE (!s || s->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, |
| vppcom_session_state_str (s->session_state)); |
| return vcl_session_closed_error (s); |
| } |
| |
| is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, 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->has_rx_evt = 0; |
| |
| if (svm_fifo_is_empty_cons (rx_fifo)) |
| { |
| if (is_nonblocking) |
| { |
| if (vcl_session_is_closing (s)) |
| return vcl_session_closing_error (s); |
| svm_fifo_unset_event (s->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); |
| |
| svm_fifo_unset_event (s->rx_fifo); |
| svm_msg_q_lock (mq); |
| if (svm_msg_q_is_empty (mq)) |
| svm_msg_q_wait (mq); |
| |
| svm_msg_q_sub_w_lock (mq, &msg); |
| e = svm_msg_q_msg_data (mq, &msg); |
| svm_msg_q_unlock (mq); |
| if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct)) |
| vcl_handle_mq_event (wrk, e); |
| svm_msg_q_free_msg (mq, &msg); |
| } |
| } |
| |
| if (s->is_dgram) |
| n_read = app_recv_dgram_raw (rx_fifo, buf, n, &s->transport, 0, peek); |
| else |
| n_read = app_recv_stream_raw (rx_fifo, buf, n, 0, peek); |
| |
| if (svm_fifo_is_empty_cons (rx_fifo)) |
| svm_fifo_unset_event (s->rx_fifo); |
| |
| /* Cut-through sessions might request tx notifications on rx fifos */ |
| if (PREDICT_FALSE (rx_fifo->want_deq_ntf)) |
| { |
| app_send_io_evt_to_vpp (s->vpp_evt_q, s->rx_fifo->master_session_index, |
| SESSION_IO_EVT_RX, SVM_Q_WAIT); |
| svm_fifo_reset_has_deq_ntf (s->rx_fifo); |
| } |
| |
| 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_segments_t ds) |
| { |
| 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_msg_t msg; |
| session_event_t *e; |
| svm_msg_q_t *mq; |
| u8 is_ct; |
| |
| s = vcl_session_get_w_handle (wrk, session_handle); |
| if (PREDICT_FALSE (!s || s->is_vep)) |
| return VPPCOM_EBADFD; |
| |
| if (PREDICT_FALSE (!vcl_session_is_open (s))) |
| return vcl_session_closed_error (s); |
| |
| is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK); |
| is_ct = vcl_session_is_ct (s); |
| mq = is_ct ? s->our_evt_q : wrk->app_event_queue; |
| rx_fifo = s->rx_fifo; |
| s->has_rx_evt = 0; |
| |
| if (is_ct) |
| svm_fifo_unset_event (s->rx_fifo); |
| |
| if (svm_fifo_is_empty_cons (rx_fifo)) |
| { |
| if (is_nonblocking) |
| { |
| 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); |
| |
| svm_fifo_unset_event (rx_fifo); |
| svm_msg_q_lock (mq); |
| if (svm_msg_q_is_empty (mq)) |
| svm_msg_q_wait (mq); |
| |
| svm_msg_q_sub_w_lock (mq, &msg); |
| e = svm_msg_q_msg_data (mq, &msg); |
| svm_msg_q_unlock (mq); |
| if (!vcl_is_rx_evt_for_session (e, s->session_index, is_ct)) |
| vcl_handle_mq_event (wrk, e); |
| svm_msg_q_free_msg (mq, &msg); |
| } |
| } |
| |
| n_read = svm_fifo_segments (rx_fifo, (svm_fifo_seg_t *) ds); |
| svm_fifo_unset_event (rx_fifo); |
| |
| return n_read; |
| } |
| |
| void |
| vppcom_session_free_segments (uint32_t session_handle, |
| vppcom_data_segments_t ds) |
| { |
| 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 || s->is_vep)) |
| return; |
| |
| svm_fifo_segments_free (s->rx_fifo, (svm_fifo_seg_t *) ds); |
| } |
| |
| int |
| vppcom_data_segment_copy (void *buf, vppcom_data_segments_t ds, u32 max_bytes) |
| { |
| u32 first_copy = clib_min (ds[0].len, max_bytes); |
| clib_memcpy_fast (buf, ds[0].data, first_copy); |
| if (first_copy < max_bytes) |
| { |
| clib_memcpy_fast (buf + first_copy, ds[1].data, |
| clib_min (ds[1].len, max_bytes - first_copy)); |
| } |
| return 0; |
| } |
| |
| static u8 |
| vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct) |
| { |
| return (e->event_type == SESSION_IO_EVT_TX && e->session_index == sid); |
| } |
| |
| 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_msg_q_msg_t msg; |
| svm_fifo_t *tx_fifo; |
| session_event_t *e; |
| svm_msg_q_t *mq; |
| u8 is_ct; |
| |
| if (PREDICT_FALSE (!buf || n == 0)) |
| return VPPCOM_EINVAL; |
| |
| if (PREDICT_FALSE (s->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, |
| vppcom_session_state_str (s->session_state)); |
| return vcl_session_closed_error (s);; |
| } |
| |
| is_ct = vcl_session_is_ct (s); |
| tx_fifo = is_ct ? s->ct_tx_fifo : s->tx_fifo; |
| is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, 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_lock (mq); |
| if (svm_msg_q_is_empty (mq)) |
| svm_msg_q_wait (mq); |
| |
| svm_msg_q_sub_w_lock (mq, &msg); |
| e = svm_msg_q_msg_data (mq, &msg); |
| svm_msg_q_unlock (mq); |
| |
| if (!vcl_is_tx_evt_for_session (e, s->session_index, is_ct)) |
| vcl_handle_mq_event (wrk, e); |
| svm_msg_q_free_msg (mq, &msg); |
| } |
| } |
| |
| et = SESSION_IO_EVT_TX; |
| if (is_flush && !is_ct) |
| et = SESSION_IO_EVT_TX_FLUSH; |
| |
| if (is_dgram) |
| n_write = app_send_dgram_raw (tx_fifo, &s->transport, |
| s->vpp_evt_q, buf, n, 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->master_session_index, |
| et, SVM_Q_WAIT); |
| |
| ASSERT (n_write > 0); |
| |
| 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->ct_rx_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 *session; |
| u32 sid; |
| |
| switch (e->event_type) |
| { |
| case SESSION_IO_EVT_RX: |
| sid = e->session_index; |
| session = vcl_session_get (wrk, sid); |
| if (!session || !vcl_session_is_open (session)) |
| break; |
| vcl_fifo_rx_evt_valid_or_break (session); |
| 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; |
| session = vcl_session_get (wrk, sid); |
| if (!session || !vcl_session_is_open (session)) |
| 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: |
| session = vcl_session_accepted (wrk, |
| (session_accepted_msg_t *) e->data); |
| if (!session) |
| break; |
| sid = session->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: |
| connected_msg = (session_connected_msg_t *) e->data; |
| sid = vcl_session_connected_handler (wrk, connected_msg); |
| if (sid == VCL_INVALID_SESSION_INDEX) |
| 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_DISCONNECTED: |
| disconnected_msg = (session_disconnected_msg_t *) e->data; |
| session = vcl_session_disconnected_handler (wrk, disconnected_msg); |
| if (!session) |
| break; |
| sid = session->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: |
| sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data); |
| 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; |
| 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; |
| |
| svm_msg_q_lock (mq); |
| if (svm_msg_q_is_empty (mq)) |
| { |
| if (*bits_set) |
| { |
| svm_msg_q_unlock (mq); |
| return 0; |
| } |
| |
| if (!time_to_wait) |
| { |
| svm_msg_q_unlock (mq); |
| return 0; |
| } |
| else if (time_to_wait < 0) |
| { |
| svm_msg_q_wait (mq); |
| } |
| else |
| { |
| if (svm_msg_q_timedwait (mq, time_to_wait)) |
| { |
| svm_msg_q_unlock (mq); |
| return 0; |
| } |
| } |
| } |
| vcl_mq_dequeue_batch (wrk, mq, ~0); |
| svm_msg_q_unlock (mq); |
| |
| 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; |
| |
| 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++) |
| { |
| 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 *session = 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; |
| |
| /* *INDENT-OFF* */ |
| clib_bitmap_foreach (sid, wrk->wr_bitmap, ({ |
| if (!(session = vcl_session_get (wrk, sid))) |
| { |
| clib_bitmap_set_no_check ((uword*)write_map, sid, 1); |
| bits_set++; |
| continue; |
| } |
| |
| if (vcl_session_write_ready (session)) |
| { |
| clib_bitmap_set_no_check ((uword*)write_map, sid, 1); |
| bits_set++; |
| } |
| else |
| svm_fifo_add_want_deq_ntf (session->tx_fifo, SVM_FIFO_WANT_DEQ_NOTIF); |
| })); |
| |
| check_rd: |
| if (!read_map) |
| goto check_mq; |
| |
| clib_bitmap_foreach (sid, wrk->rd_bitmap, ({ |
| if (!(session = vcl_session_get (wrk, sid))) |
| { |
| clib_bitmap_set_no_check ((uword*)read_map, sid, 1); |
| bits_set++; |
| continue; |
| } |
| |
| if (vcl_session_read_ready (session)) |
| { |
| clib_bitmap_set_no_check ((uword*)read_map, sid, 1); |
| bits_set++; |
| } |
| })); |
| /* *INDENT-ON* */ |
| |
| 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) |
| { |
| vcl_session_t *session; |
| vppcom_epoll_t *vep; |
| u32 sh = vep_handle; |
| |
| if (VPPCOM_DEBUG <= 2) |
| return; |
| |
| session = vcl_session_get_w_handle (wrk, vep_handle); |
| if (PREDICT_FALSE (!session)) |
| { |
| VDBG (0, "ERROR: Invalid vep_sh (%u)!", vep_handle); |
| goto done; |
| } |
| if (PREDICT_FALSE (!session->is_vep)) |
| { |
| VDBG (0, "ERROR: vep_sh (%u) is not a vep!", vep_handle); |
| goto done; |
| } |
| vep = &session->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, session->is_vep, session->is_vep_session, |
| vep->next_sh, vep->next_sh); |
| |
| for (sh = vep->next_sh; sh != ~0; sh = vep->next_sh) |
| { |
| session = vcl_session_get_w_handle (wrk, sh); |
| if (PREDICT_FALSE (!session)) |
| { |
| VDBG (0, "ERROR: Invalid sh (%u)!", sh); |
| goto done; |
| } |
| if (PREDICT_FALSE (session->is_vep)) |
| { |
| VDBG (0, "ERROR: sh (%u) is a vep!", vep_handle); |
| } |
| else if (PREDICT_FALSE (!session->is_vep_session)) |
| { |
| VDBG (0, "ERROR: sh (%u) is not a vep session handle!", sh); |
| goto done; |
| } |
| vep = &session->vep; |
| if (PREDICT_FALSE (vep->vep_sh != vep_handle)) |
| VDBG (0, "ERROR: session (%u) vep_sh (%u) != vep_sh (%u)!", |
| sh, session->vep.vep_sh, vep_handle); |
| if (session->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->is_vep = 1; |
| 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); |
| } |
| |
| 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 (); |
| vcl_session_t *vep_session; |
| vcl_session_t *session; |
| int rv = VPPCOM_OK; |
| |
| 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->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); |
| |
| session = vcl_session_get_w_handle (wrk, session_handle); |
| if (PREDICT_FALSE (!session)) |
| { |
| VDBG (0, "Invalid session_handle (%u)!", session_handle); |
| return VPPCOM_EBADFD; |
| } |
| if (PREDICT_FALSE (session->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 (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; |
| } |
| session->vep.next_sh = vep_session->vep.next_sh; |
| session->vep.prev_sh = vep_handle; |
| session->vep.vep_sh = vep_handle; |
| session->vep.et_mask = VEP_DEFAULT_ET_MASK; |
| session->vep.ev = *event; |
| session->is_vep = 0; |
| session->is_vep_session = 1; |
| vep_session->vep.next_sh = session_handle; |
| |
| if (session->tx_fifo) |
| svm_fifo_add_want_deq_ntf (session->tx_fifo, |
| SVM_FIFO_WANT_DEQ_NOTIF_IF_FULL); |
| |
| /* Generate EPOLLOUT if tx fifo not full */ |
| if ((event->events & EPOLLOUT) && |
| (vcl_session_write_ready (session) > 0)) |
| { |
| session_event_t e = { 0 }; |
| e.event_type = SESSION_IO_EVT_TX; |
| e.session_index = session->session_index; |
| vec_add1 (wrk->unhandled_evts_vector, e); |
| } |
| /* Generate EPOLLIN if rx fifo has data */ |
| if ((event->events & EPOLLIN) && (vcl_session_read_ready (session) > 0)) |
| { |
| session_event_t e = { 0 }; |
| e.event_type = SESSION_IO_EVT_RX; |
| e.session_index = session->session_index; |
| 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, session, 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 (!session->is_vep_session)) |
| { |
| VDBG (0, "sh %u EPOLL_CTL_MOD: not a vep session!", session_handle); |
| rv = VPPCOM_EINVAL; |
| goto done; |
| } |
| else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle)) |
| { |
| VDBG (0, "EPOLL_CTL_MOD: sh %u vep_sh (%u) != vep_sh (%u)!", |
| session_handle, session->vep.vep_sh, vep_handle); |
| rv = VPPCOM_EINVAL; |
| goto done; |
| } |
| |
| /* Generate EPOLLOUT when tx_fifo/ct_tx_fifo not full */ |
| if ((event->events & EPOLLOUT) && |
| !(session->vep.ev.events & EPOLLOUT) && |
| (vcl_session_write_ready (session) > 0)) |
| { |
| session_event_t e = { 0 }; |
| e.event_type = SESSION_IO_EVT_TX; |
| e.session_index = session->session_index; |
| vec_add1 (wrk->unhandled_evts_vector, e); |
| } |
| session->vep.et_mask = VEP_DEFAULT_ET_MASK; |
| session->vep.ev = *event; |
| 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 (!session->is_vep_session)) |
| { |
| VDBG (0, "EPOLL_CTL_DEL: %u not a vep session!", session_handle); |
| rv = VPPCOM_EINVAL; |
| goto done; |
| } |
| else if (PREDICT_FALSE (session->vep.vep_sh != vep_handle)) |
| { |
| VDBG (0, "EPOLL_CTL_DEL: sh %u vep_sh (%u) != vep_sh (%u)!", |
| session_handle, session->vep.vep_sh, vep_handle); |
| rv = VPPCOM_EINVAL; |
| goto done; |
| } |
| |
| if (session->vep.prev_sh == vep_handle) |
| vep_session->vep.next_sh = session->vep.next_sh; |
| else |
| { |
| vcl_session_t *prev_session; |
| prev_session = vcl_session_get_w_handle (wrk, session->vep.prev_sh); |
| if (PREDICT_FALSE (!prev_session)) |
| { |
| VDBG (0, "EPOLL_CTL_DEL: Invalid prev_sh (%u) on sh (%u)!", |
| session->vep.prev_sh, session_handle); |
| return VPPCOM_EBADFD; |
| } |
| ASSERT (prev_session->vep.next_sh == session_handle); |
| prev_session->vep.next_sh = session->vep.next_sh; |
| } |
| if (session->vep.next_sh != ~0) |
| { |
| vcl_session_t *next_session; |
| next_session = vcl_session_get_w_handle (wrk, session->vep.next_sh); |
| if (PREDICT_FALSE (!next_session)) |
| { |
| VDBG (0, "EPOLL_CTL_DEL: Invalid next_sh (%u) on sh (%u)!", |
| session->vep.next_sh, session_handle); |
| return VPPCOM_EBADFD; |
| } |
| ASSERT (next_session->vep.prev_sh == session_handle); |
| next_session->vep.prev_sh = session->vep.prev_sh; |
| } |
| |
| memset (&session->vep, 0, sizeof (session->vep)); |
| session->vep.next_sh = ~0; |
| session->vep.prev_sh = ~0; |
| session->vep.vep_sh = ~0; |
| session->is_vep_session = 0; |
| |
| if (session->tx_fifo) |
| svm_fifo_del_want_deq_ntf (session->tx_fifo, SVM_FIFO_NO_DEQ_NOTIF); |
| |
| VDBG (1, "EPOLL_CTL_DEL: vep_idx %u, sh %u!", vep_handle, |
| session_handle); |
| vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_sh); |
| break; |
| |
| default: |
| VDBG (0, "Invalid operation (%d)!", op); |
| rv = VPPCOM_EINVAL; |
| } |
| |
| vep_verify_epoll_chain (wrk, vep_handle); |
| |
| done: |
| return rv; |
| } |
| |
| 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 *session; |
| u8 add_event = 0; |
| |
| switch (e->event_type) |
| { |
| case SESSION_IO_EVT_RX: |
| sid = e->session_index; |
| session = vcl_session_get (wrk, sid); |
| if (vcl_session_is_closed (session)) |
| break; |
| vcl_fifo_rx_evt_valid_or_break (session); |
| session_events = session->vep.ev.events; |
| if (!(EPOLLIN & session->vep.ev.events) || session->has_rx_evt) |
| break; |
| add_event = 1; |
| events[*num_ev].events |= EPOLLIN; |
| session_evt_data = session->vep.ev.data.u64; |
| session->has_rx_evt = 1; |
| break; |
| case SESSION_IO_EVT_TX: |
| sid = e->session_index; |
| session = vcl_session_get (wrk, sid); |
| if (vcl_session_is_closed (session)) |
| break; |
| session_events = session->vep.ev.events; |
| if (!(EPOLLOUT & session_events)) |
| break; |
| add_event = 1; |
| events[*num_ev].events |= EPOLLOUT; |
| session_evt_data = session->vep.ev.data.u64; |
| svm_fifo_reset_has_deq_ntf (session->tx_fifo); |
| break; |
| case SESSION_CTRL_EVT_ACCEPTED: |
| session = vcl_session_accepted (wrk, |
| (session_accepted_msg_t *) e->data); |
| if (!session) |
| break; |
| |
| session_events = session->vep.ev.events; |
| if (!(EPOLLIN & session_events)) |
| break; |
| |
| add_event = 1; |
| events[*num_ev].events |= EPOLLIN; |
| session_evt_data = session->vep.ev.data.u64; |
| break; |
| case SESSION_CTRL_EVT_CONNECTED: |
| connected_msg = (session_connected_msg_t *) e->data; |
| sid = vcl_session_connected_handler (wrk, connected_msg); |
| /* Generate EPOLLOUT because there's no connected event */ |
| session = vcl_session_get (wrk, sid); |
| if (vcl_session_is_closed (session)) |
| break; |
| session_events = session->vep.ev.events; |
| if (!(EPOLLOUT & session_events)) |
| break; |
| add_event = 1; |
| events[*num_ev].events |= EPOLLOUT; |
| session_evt_data = session->vep.ev.data.u64; |
| if (session->session_state & STATE_DETACHED) |
| events[*num_ev].events |= EPOLLHUP; |
| break; |
| case SESSION_CTRL_EVT_DISCONNECTED: |
| disconnected_msg = (session_disconnected_msg_t *) e->data; |
| session = vcl_session_disconnected_handler (wrk, disconnected_msg); |
| if (vcl_session_is_closed (session)) |
| break; |
| session_events = session->vep.ev.events; |
| add_event = 1; |
| events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP; |
| session_evt_data = session->vep.ev.data.u64; |
| break; |
| case SESSION_CTRL_EVT_RESET: |
| sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data); |
| session = vcl_session_get (wrk, sid); |
| if (vcl_session_is_closed (session)) |
| break; |
| session_events = session->vep.ev.events; |
| add_event = 1; |
| events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP; |
| session_evt_data = session->vep.ev.data.u64; |
| 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; |
| default: |
| VDBG (0, "unhandled: %u", e->event_type); |
| break; |
| } |
| |
| if (add_event) |
| { |
| events[*num_ev].data.u64 = session_evt_data; |
| if (EPOLLONESHOT & session_events) |
| { |
| session = vcl_session_get (wrk, sid); |
| session->vep.ev.events = 0; |
| } |
| *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; |
| |
| svm_msg_q_lock (mq); |
| if (svm_msg_q_is_empty (mq)) |
| { |
| if (!wait_for_time) |
| { |
| svm_msg_q_unlock (mq); |
| return 0; |
| } |
| else if (wait_for_time < 0) |
| { |
| svm_msg_q_wait (mq); |
| } |
| else |
| { |
| if (svm_msg_q_timedwait (mq, wait_for_time / 1e3)) |
| { |
| svm_msg_q_unlock (mq); |
| return 0; |
| } |
| } |
| } |
| ASSERT (maxevents > *num_ev); |
| vcl_mq_dequeue_batch (wrk, mq, ~0); |
| svm_msg_q_unlock (mq); |
| |
| 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 wait_for_time) |
| { |
| double wait = 0, start = 0, now; |
| |
| if (!n_evts) |
| { |
| wait = wait_for_time; |
| start = clib_time_now (&wrk->clib_time); |
| } |
| |
| do |
| { |
| vcl_epoll_wait_handle_mq (wrk, wrk->app_event_queue, events, maxevents, |
| wait, &n_evts); |
| if (n_evts) |
| return n_evts; |
| if (wait == -1) |
| continue; |
| |
| now = clib_time_now (&wrk->clib_time); |
| wait -= now - start; |
| start = now; |
| } |
| while (wait > 0); |
| |
| return 0; |
| } |
| |
| static int |
| vppcom_epoll_wait_eventfd (vcl_worker_t * wrk, struct epoll_event *events, |
| int maxevents, u32 n_evts, double wait_for_time) |
| { |
| vcl_mq_evt_conn_t *mqc; |
| int __clib_unused n_read; |
| int n_mq_evts, i; |
| u64 buf; |
| |
| vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns)); |
| again: |
| n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events, |
| vec_len (wrk->mq_events), wait_for_time); |
| for (i = 0; i < n_mq_evts; i++) |
| { |
| 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 && n_mq_evts > 0) |
| goto again; |
| |
| return (int) n_evts; |
| } |
| |
| 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->is_vep)) |
| { |
| VDBG (0, "ERROR: vep_idx (%u) is not a vep!", vep_handle); |
| return VPPCOM_EINVAL; |
| } |
| |
| memset (events, 0, sizeof (*events) * maxevents); |
| |
| 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 (vcm->cfg.use_mq_eventfd) |
| return vppcom_epoll_wait_eventfd (wrk, events, maxevents, n_evts, |
| wait_for_time); |
| |
| return vppcom_epoll_wait_condvar (wrk, events, maxevents, n_evts, |
| wait_for_time); |
| } |
| |
| int |
| vppcom_session_attr (uint32_t session_handle, uint32_t op, |
| void *buffer, uint32_t * buflen) |
| { |
| vcl_worker_t *wrk = vcl_worker_get_current (); |
| vcl_session_t *session; |
| int rv = VPPCOM_OK; |
| u32 *flags = buffer, tmp_flags = 0; |
| vppcom_endpt_t *ep = buffer; |
| |
| 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_SESS_ATTR_TEST (session->attr, |
| VCL_SESS_ATTR_NONBLOCK)); |
| *buflen = sizeof (*flags); |
| VDBG (2, "VPPCOM_ATTR_GET_FLAGS: sh %u, flags = 0x%08x, " |
| "is_nonblocking = %u", session_handle, *flags, |
| VCL_SESS_ATTR_TEST (session->attr, 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_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK); |
| else |
| VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK); |
| |
| VDBG (2, "VPPCOM_ATTR_SET_FLAGS: sh %u, flags = 0x%08x," |
| " is_nonblocking = %u", session_handle, *flags, |
| VCL_SESS_ATTR_TEST (session->attr, 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, |
| 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, 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_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, 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_SESS_ATTR_TEST (session->attr, |
| 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_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_SESS_ATTR_TEST (session->attr, |
| 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_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN)) |
| { |
| /* VPP-TBD */ |
| if (*(int *) buffer) |
| VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEADDR); |
| else |
| VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEADDR); |
| |
| VDBG (2, "VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d, #VPP-TBD#", |
| VCL_SESS_ATTR_TEST (session->attr, 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_SESS_ATTR_TEST (session->attr, |
| 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_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_LISTEN)) |
| { |
| /* VPP-TBD */ |
| if (*(int *) buffer) |
| VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_REUSEPORT); |
| else |
| VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_REUSEPORT); |
| |
| VDBG (2, "VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d, #VPP-TBD#", |
| VCL_SESS_ATTR_TEST (session->attr, 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_SESS_ATTR_TEST (session->attr, |
| 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_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_BROADCAST); |
| else |
| VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_BROADCAST); |
| |
| VDBG (2, "VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, #VPP-TBD#", |
| VCL_SESS_ATTR_TEST (session->attr, 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_SESS_ATTR_TEST (session->attr, |
| 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_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_V6ONLY); |
| else |
| VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_V6ONLY); |
| |
| VDBG (2, "VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, #VPP-TBD#", |
| VCL_SESS_ATTR_TEST (session->attr, 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_SESS_ATTR_TEST (session->attr, |
| 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_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_KEEPALIVE); |
| else |
| VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_KEEPALIVE); |
| |
| VDBG (2, "VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, #VPP-TBD#", |
| VCL_SESS_ATTR_TEST (session->attr, 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_SESS_ATTR_TEST (session->attr, |
| 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_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_NODELAY); |
| else |
| VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_NODELAY); |
| |
| VDBG (2, "VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, #VPP-TBD#", |
| VCL_SESS_ATTR_TEST (session->attr, 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_SESS_ATTR_TEST (session->attr, |
| 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_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE); |
| else |
| VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPIDLE); |
| |
| VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, #VPP-TBD#", |
| VCL_SESS_ATTR_TEST (session->attr, |
| 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_SESS_ATTR_TEST (session->attr, |
| 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_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL); |
| else |
| VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_TCP_KEEPINTVL); |
| |
| VDBG (2, "VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, #VPP-TBD#", |
| VCL_SESS_ATTR_TEST (session->attr, |
| VCL_SESS_ATTR_TCP_KEEPINTVL), *buflen); |
| } |
| else |
| rv = VPPCOM_EINVAL; |
| break; |
| |
| case VPPCOM_ATTR_GET_TCP_USER_MSS: |
| if (buffer && buflen && (*buflen >= sizeof (u32))) |
| { |
| /* VPP-TBD */ |
| *(u32 *) buffer = session->user_mss; |
| *buflen = sizeof (int); |
| |
| VDBG (2, "VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d, #VPP-TBD#", |
| *(int *) buffer, *buflen); |
| } |
| else |
| rv = VPPCOM_EINVAL; |
| break; |
| |
| case VPPCOM_ATTR_SET_TCP_USER_MSS: |
| if (buffer && buflen && (*buflen == sizeof (u32))) |
| { |
| /* VPP-TBD */ |
| session->user_mss = *(u32 *) buffer; |
| |
| VDBG (2, "VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, #VPP-TBD#", |
| session->user_mss, *buflen); |
| } |
| else |
| rv = VPPCOM_EINVAL; |
| break; |
| |
| case VPPCOM_ATTR_SET_SHUT: |
| if (*flags == SHUT_RD || *flags == SHUT_RDWR) |
| VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_SHUT_RD); |
| if (*flags == SHUT_WR || *flags == SHUT_RDWR) |
| VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_SHUT_WR); |
| break; |
| |
| case VPPCOM_ATTR_GET_SHUT: |
| if (VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_SHUT_RD)) |
| tmp_flags = 1; |
| if (VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_SHUT_WR)) |
| tmp_flags |= 2; |
| if (tmp_flags == 1) |
| *(int *) buffer = SHUT_RD; |
| else if (tmp_flags == 2) |
| *(int *) buffer = SHUT_WR; |
| else if (tmp_flags == 3) |
| *(int *) buffer = SHUT_RDWR; |
| *buflen = sizeof (int); |
| break; |
| |
| case VPPCOM_ATTR_SET_CONNECTED: |
| session->flags |= VCL_SESSION_F_CONNECTED; |
| 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; |
| } |
| |
| 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 (!s) |
| return VPPCOM_EBADFD; |
| |
| if (!buffer) |
| return VPPCOM_EINVAL; |
| |
| if (ep) |
| { |
| if (s->session_type != VPPCOM_PROTO_UDP |
| || (s->flags & VCL_SESSION_F_CONNECTED)) |
| return VPPCOM_EINVAL; |
| |
| /* Session not connected/bound in vpp. Create it by 'connecting' it */ |
| if (PREDICT_FALSE (s->session_state == STATE_CLOSED)) |
| { |
| vcl_send_session_connect (wrk, s); |
| } |
| else |
| { |
| s->transport.is_ip4 = ep->is_ip4; |
| s->transport.rmt_port = ep->port; |
| vcl_ip_copy_from_ep (&s->transport.rmt_ip, ep); |
| } |
| } |
| |
| 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) |
| { |
| vcl_worker_t *wrk; |
| u8 *wrk_name = 0; |
| int rv; |
| |
| if (!vcl_worker_alloc_and_init ()) |
| return VPPCOM_EEXIST; |
| |
| wrk = vcl_worker_get_current (); |
| wrk_name = format (0, "%s-wrk-%u", vcm->app_name, wrk->wrk_index); |
| |
| rv = vppcom_connect_to_vpp ((char *) wrk_name); |
| vec_free (wrk_name); |
| |
| if (rv) |
| return VPPCOM_EFAULT; |
| |
| 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; |
| 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; |
| |
| default: |
| st = "UNKNOWN_STATE"; |
| break; |
| } |
| |
| return st; |
| } |
| |
| /* |
| * fd.io coding-style-patch-verification: ON |
| * |
| * Local Variables: |
| * eval: (c-set-style "gnu") |
| * End: |
| */ |