/* * Copyright (c) 2017 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 #include #include #include #include #include #include static u8 not_ready; void sigsegv_signal (int signum) { not_ready = 1; } static void vcl_wait_for_memory (void *mem) { u8 __clib_unused test; if (1 || vcm->debug) { sleep (1); return; } if (signal (SIGSEGV, sigsegv_signal)) { perror ("signal()"); return; } not_ready = 0; again: test = *(u8 *) mem; if (not_ready) { not_ready = 0; usleep (1); goto again; } signal (SIGSEGV, SIG_DFL); } static const char * vppcom_app_state_str (app_state_t state) { char *st; switch (state) { case STATE_APP_START: st = "STATE_APP_START"; break; case STATE_APP_CONN_VPP: st = "STATE_APP_CONN_VPP"; break; case STATE_APP_ENABLED: st = "STATE_APP_ENABLED"; break; case STATE_APP_ATTACHED: st = "STATE_APP_ATTACHED"; break; default: st = "UNKNOWN_APP_STATE"; break; } return st; } const char * vppcom_session_state_str (session_state_t state) { char *st; switch (state) { case STATE_START: st = "STATE_START"; break; case STATE_CONNECT: st = "STATE_CONNECT"; break; case STATE_LISTEN: st = "STATE_LISTEN"; break; case STATE_ACCEPT: st = "STATE_ACCEPT"; break; case STATE_CLOSE_ON_EMPTY: st = "STATE_CLOSE_ON_EMPTY"; break; case STATE_DISCONNECT: st = "STATE_DISCONNECT"; break; case STATE_FAILED: st = "STATE_FAILED"; 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 inline void vppcom_session_table_del_listener (u64 listener_handle) { listener_handle |= 1ULL << 63; hash_unset (vcm->session_index_by_vpp_handles, listener_handle); } static inline int vppcom_wait_for_app_state_change (app_state_t app_state) { f64 timeout = clib_time_now (&vcm->clib_time) + vcm->cfg.app_timeout; while (clib_time_now (&vcm->clib_time) < timeout) { if (vcm->app_state == app_state) return VPPCOM_OK; } VDBG (0, "VCL<%d>: timeout waiting for state %s (%d)", getpid (), vppcom_app_state_str (app_state), app_state); vcl_evt (VCL_EVT_SESSION_TIMEOUT, vcm, app_state); return VPPCOM_ETIMEDOUT; } static u32 vcl_ct_registration_add (svm_msg_q_t * mq, u32 sid) { vcl_cut_through_registration_t *cr; pool_get (vcm->cut_through_registrations, cr); cr->mq = mq; cr->sid = sid; return (cr - vcm->cut_through_registrations); } static void vcl_ct_registration_del (u32 ct_index) { pool_put_index (vcm->cut_through_registrations, ct_index); } static vcl_session_t * vcl_ct_session_get_from_fifo (svm_fifo_t * f, u8 type) { vcl_session_t *s; s = vcl_session_get (f->client_session_index); if (s) { /* rx fifo */ if (type == 0 && s->rx_fifo == f) return s; /* tx fifo */ if (type == 1 && s->tx_fifo == f) return s; } s = vcl_session_get (f->master_session_index); if (s) { if (type == 0 && s->rx_fifo == f) return s; if (type == 1 && s->tx_fifo == f) return s; } return 0; } 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 u32 vcl_session_accepted_handler (session_accepted_msg_t * mp) { vcl_session_t *session, *listen_session; svm_fifo_t *rx_fifo, *tx_fifo; u32 session_index; VCL_SESSION_LOCK (); listen_session = vppcom_session_table_lookup_listener (mp->listener_handle); if (!listen_session) { svm_msg_q_t *evt_q; evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *); clib_warning ("VCL<%d>: ERROR: couldn't find listen session: " "unknown vpp listener handle %llx", getpid (), mp->listener_handle); vcl_send_session_accepted_reply (evt_q, mp->context, mp->handle, VNET_API_ERROR_INVALID_ARGUMENT); return VCL_INVALID_SESSION_INDEX; } pool_get (vcm->sessions, session); memset (session, 0, sizeof (*session)); session_index = (u32) (session - vcm->sessions); 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 (mp->server_event_queue_address) { session->vpp_evt_q = uword_to_pointer (mp->client_event_queue_address, svm_msg_q_t *); session->our_evt_q = uword_to_pointer (mp->server_event_queue_address, svm_msg_q_t *); vcl_wait_for_memory (session->vpp_evt_q); session->ct_registration = vcl_ct_registration_add (session->our_evt_q, session_index); rx_fifo->master_session_index = session_index; tx_fifo->master_session_index = session_index; } else { session->vpp_evt_q = uword_to_pointer (mp->vpp_event_queue_address, svm_msg_q_t *); rx_fifo->client_session_index = session_index; tx_fifo->client_session_index = session_index; } session->vpp_handle = mp->handle; session->client_context = mp->context; session->rx_fifo = rx_fifo; session->tx_fifo = tx_fifo; session->session_state = STATE_ACCEPT; session->transport.rmt_port = mp->port; session->transport.is_ip4 = mp->is_ip4; clib_memcpy (&session->transport.rmt_ip, mp->ip, sizeof (ip46_address_t)); hash_set (vcm->session_index_by_vpp_handles, mp->handle, session_index); session->transport.lcl_port = listen_session->transport.lcl_port; session->transport.lcl_ip = listen_session->transport.lcl_ip; VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: client accept request from %s" " address %U port %d queue %p!", getpid (), mp->handle, session_index, mp->is_ip4 ? "IPv4" : "IPv6", format_ip46_address, &mp->ip, mp->is_ip4 ? IP46_TYPE_IP4 : IP46_TYPE_IP6, clib_net_to_host_u16 (mp->port), session->vpp_evt_q); vcl_evt (VCL_EVT_ACCEPT, session, listen_session, session_index); VCL_SESSION_UNLOCK (); return session_index; } static u32 vcl_session_connected_handler (session_connected_msg_t * mp) { vcl_session_t *session = 0; u32 session_index; svm_fifo_t *rx_fifo, *tx_fifo; int rv = VPPCOM_OK; session_index = mp->context; VCL_SESSION_LOCK_AND_GET (session_index, &session); done: if (mp->retval) { clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "connect failed! %U", getpid (), mp->handle, session_index, format_api_error, ntohl (mp->retval)); if (session) { session->session_state = STATE_FAILED; session->vpp_handle = mp->handle; } else { clib_warning ("[%s] ERROR: vpp handle 0x%llx, sid %u: " "Invalid session index (%u)!", getpid (), mp->handle, session_index); } goto done_unlock; } if (rv) goto done_unlock; if (mp->client_event_queue_address) { session->vpp_evt_q = uword_to_pointer (mp->server_event_queue_address, svm_msg_q_t *); session->our_evt_q = uword_to_pointer (mp->client_event_queue_address, svm_msg_q_t *); vcl_wait_for_memory (session->vpp_evt_q); session->ct_registration = vcl_ct_registration_add (session->our_evt_q, session_index); } else 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 *); rx_fifo->client_session_index = session_index; tx_fifo = uword_to_pointer (mp->server_tx_fifo, svm_fifo_t *); tx_fifo->client_session_index = session_index; session->rx_fifo = rx_fifo; session->tx_fifo = tx_fifo; session->vpp_handle = mp->handle; session->transport.is_ip4 = mp->is_ip4; clib_memcpy (&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 */ hash_set (vcm->session_index_by_vpp_handles, mp->handle, session_index); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: connect succeeded! " "session_rx_fifo %p, refcnt %d, session_tx_fifo %p, refcnt %d", getpid (), mp->handle, session_index, session->rx_fifo, session->rx_fifo->refcnt, session->tx_fifo, session->tx_fifo->refcnt); done_unlock: VCL_SESSION_UNLOCK (); return session_index; } int vcl_handle_mq_ctrl_event (session_event_t * e) { session_accepted_msg_t *accepted_msg; session_disconnected_msg_t *disconnected_msg; vcl_session_msg_t *vcl_msg; vcl_session_t *session; u64 handle; u32 sid; switch (e->event_type) { case FIFO_EVENT_APP_RX: clib_warning ("unhandled rx: sid %u (0x%x)", e->fifo->client_session_index, e->fifo->client_session_index); break; case SESSION_CTRL_EVT_ACCEPTED: accepted_msg = (session_accepted_msg_t *) e->data; handle = accepted_msg->listener_handle; session = vppcom_session_table_lookup_listener (handle); if (!session) { clib_warning ("VCL<%d>: ERROR: couldn't find listen session:" "listener handle %llx", getpid (), handle); break; } clib_fifo_add2 (session->accept_evts_fifo, vcl_msg); vcl_msg->accepted_msg = *accepted_msg; break; case SESSION_CTRL_EVT_CONNECTED: vcl_session_connected_handler ((session_connected_msg_t *) e->data); break; case SESSION_CTRL_EVT_DISCONNECTED: disconnected_msg = (session_disconnected_msg_t *) e->data; sid = vcl_session_get_index_from_handle (disconnected_msg->handle); session = vcl_session_get (sid); session->session_state = STATE_DISCONNECT; VDBG (0, "disconnected %u", sid); break; default: clib_warning ("unhandled %u", e->event_type); } return VPPCOM_OK; } static inline int vppcom_wait_for_session_state_change (u32 session_index, session_state_t state, f64 wait_for_time) { f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time; vcl_session_t *volatile session; svm_msg_q_msg_t msg; session_event_t *e; int rv; do { VCL_SESSION_LOCK (); rv = vppcom_session_at_index (session_index, &session); if (PREDICT_FALSE (rv)) { VCL_SESSION_UNLOCK (); return rv; } if (session->session_state & state) { VCL_SESSION_UNLOCK (); return VPPCOM_OK; } if (session->session_state & STATE_FAILED) { VCL_SESSION_UNLOCK (); return VPPCOM_ECONNREFUSED; } VCL_SESSION_UNLOCK (); if (svm_msg_q_sub (vcm->app_event_queue, &msg, SVM_Q_NOWAIT, 0)) continue; e = svm_msg_q_msg_data (vcm->app_event_queue, &msg); vcl_handle_mq_ctrl_event (e); svm_msg_q_free_msg (vcm->app_event_queue, &msg); } while (clib_time_now (&vcm->clib_time) < timeout); VDBG (0, "VCL<%d>: timeout waiting for state 0x%x (%s)", getpid (), state, vppcom_session_state_str (state)); vcl_evt (VCL_EVT_SESSION_TIMEOUT, session, session_state); return VPPCOM_ETIMEDOUT; } 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 = vppcom_wait_for_app_state_change (STATE_APP_ENABLED); if (PREDICT_FALSE (rv)) { VDBG (0, "VCL<%d>: application session enable timed out! " "returning %d (%s)", getpid (), rv, vppcom_retval_str (rv)); return rv; } } return VPPCOM_OK; } static int vppcom_app_attach (void) { int rv; vppcom_app_send_attach (); rv = vppcom_wait_for_app_state_change (STATE_APP_ATTACHED); if (PREDICT_FALSE (rv)) { VDBG (0, "VCL<%d>: application attach timed out! returning %d (%s)", getpid (), rv, vppcom_retval_str (rv)); return rv; } return VPPCOM_OK; } static int vppcom_session_unbind (u32 session_index) { vcl_session_t *session = 0; int rv; u64 vpp_handle; VCL_SESSION_LOCK_AND_GET (session_index, &session); vpp_handle = session->vpp_handle; vppcom_session_table_del_listener (vpp_handle); session->vpp_handle = ~0; session->session_state = STATE_DISCONNECT; VCL_SESSION_UNLOCK (); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending unbind msg! new state" " 0x%x (%s)", getpid (), vpp_handle, session_index, STATE_DISCONNECT, vppcom_session_state_str (STATE_DISCONNECT)); vcl_evt (VCL_EVT_UNBIND, session); vppcom_send_unbind_sock (vpp_handle); done: return rv; } static int vppcom_session_disconnect (u32 session_index) { int rv; vcl_session_t *session; u64 vpp_handle; session_state_t state; VCL_SESSION_LOCK_AND_GET (session_index, &session); vpp_handle = session->vpp_handle; state = session->session_state; VCL_SESSION_UNLOCK (); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u state 0x%x (%s)", getpid (), vpp_handle, session_index, state, vppcom_session_state_str (state)); if (PREDICT_FALSE (state & STATE_LISTEN)) { clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "Cannot disconnect a listen socket!", getpid (), vpp_handle, session_index); rv = VPPCOM_EBADFD; goto done; } if (state & STATE_CLOSE_ON_EMPTY) { vppcom_send_disconnect_session_reply (vpp_handle, session_index, 0 /* rv */ ); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect " "REPLY...", getpid (), vpp_handle, session_index); } else { VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: sending disconnect...", getpid (), vpp_handle, session_index); vppcom_send_disconnect_session (vpp_handle, session_index); } done: return rv; } /* * VPPCOM Public API functions */ int vppcom_app_create (char *app_name) { vppcom_cfg_t *vcl_cfg = &vcm->cfg; int rv; if (!vcm->init) { vcm->init = 1; vppcom_cfg (&vcm->cfg); clib_spinlock_init (&vcm->session_fifo_lockp); clib_fifo_validate (vcm->client_session_index_fifo, vcm->cfg.listen_queue_size); clib_spinlock_init (&vcm->sessions_lockp); vcm->main_cpu = os_get_thread_index (); vcm->session_index_by_vpp_handles = hash_create (0, sizeof (uword)); clib_time_init (&vcm->clib_time); vppcom_init_error_string_table (); svm_fifo_segment_main_init (vcl_cfg->segment_baseva, 20 /* timeout in secs */ ); } if (vcm->my_client_index == ~0) { /* API hookup and connect to VPP */ vppcom_api_hookup (); vcl_elog_init (vcm); vcm->app_state = STATE_APP_START; rv = vppcom_connect_to_vpp (app_name); if (rv) { clib_warning ("VCL<%d>: ERROR: couldn't connect to VPP!", getpid ()); return rv; } /* State event handling thread */ rv = vce_start_event_thread (&(vcm->event_thread), 20); VDBG (0, "VCL<%d>: sending session enable", getpid ()); rv = vppcom_app_session_enable (); if (rv) { clib_warning ("VCL<%d>: ERROR: vppcom_app_session_enable() " "failed!", getpid ()); return rv; } VDBG (0, "VCL<%d>: sending app attach", getpid ()); rv = vppcom_app_attach (); if (rv) { clib_warning ("VCL<%d>: ERROR: vppcom_app_attach() failed!", getpid ()); return rv; } VDBG (0, "VCL<%d>: app_name '%s', my_client_index %d (0x%x)", getpid (), app_name, vcm->my_client_index, vcm->my_client_index); } return VPPCOM_OK; } void vppcom_app_destroy (void) { int rv; f64 orig_app_timeout; if (vcm->my_client_index == ~0) return; VDBG (0, "VCL<%d>: detaching from VPP, my_client_index %d (0x%x)", getpid (), vcm->my_client_index, vcm->my_client_index); vcl_evt (VCL_EVT_DETACH, vcm); vppcom_app_send_detach (); orig_app_timeout = vcm->cfg.app_timeout; vcm->cfg.app_timeout = 2.0; rv = vppcom_wait_for_app_state_change (STATE_APP_ENABLED); vcm->cfg.app_timeout = orig_app_timeout; if (PREDICT_FALSE (rv)) VDBG (0, "VCL<%d>: application detach timed out! returning %d (%s)", getpid (), rv, vppcom_retval_str (rv)); vcl_elog_stop (vcm); vl_client_disconnect_from_vlib (); vcm->my_client_index = ~0; vcm->app_state = STATE_APP_START; } int vppcom_session_create (u8 proto, u8 is_nonblocking) { vcl_session_t *session; u32 session_index; VCL_SESSION_LOCK (); pool_get (vcm->sessions, session); memset (session, 0, sizeof (*session)); session_index = session - vcm->sessions; session->session_type = proto; session->session_state = STATE_START; session->vpp_handle = ~0; if (is_nonblocking) VCL_SESS_ATTR_SET (session->attr, VCL_SESS_ATTR_NONBLOCK); else VCL_SESS_ATTR_CLR (session->attr, VCL_SESS_ATTR_NONBLOCK); vcl_evt (VCL_EVT_CREATE, session, session_type, session->session_state, is_nonblocking, session_index); VCL_SESSION_UNLOCK (); VDBG (0, "VCL<%d>: sid %u", getpid (), session_index); return (int) session_index; } int vppcom_session_close (uint32_t session_index) { vcl_session_t *session = 0; int rv; u8 is_vep; u8 is_vep_session; u32 next_sid; u32 vep_idx; u64 vpp_handle; uword *p; session_state_t state; VCL_SESSION_LOCK_AND_GET (session_index, &session); is_vep = session->is_vep; is_vep_session = session->is_vep_session; next_sid = session->vep.next_sid; vep_idx = session->vep.vep_idx; state = session->session_state; vpp_handle = session->vpp_handle; VCL_SESSION_UNLOCK (); if (VPPCOM_DEBUG > 0) { if (is_vep) clib_warning ("VCL<%d>: vep_idx %u / sid %u: " "closing epoll session...", getpid (), session_index, session_index); else clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %d: " "closing session...", getpid (), vpp_handle, session_index); } if (is_vep) { while (next_sid != ~0) { rv = vppcom_epoll_ctl (session_index, EPOLL_CTL_DEL, next_sid, 0); if (PREDICT_FALSE (rv < 0)) VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL " "vep_idx %u failed! rv %d (%s)", getpid (), vpp_handle, next_sid, vep_idx, rv, vppcom_retval_str (rv)); VCL_SESSION_LOCK_AND_GET (session_index, &session); next_sid = session->vep.next_sid; VCL_SESSION_UNLOCK (); } } else { if (is_vep_session) { rv = vppcom_epoll_ctl (vep_idx, EPOLL_CTL_DEL, session_index, 0); if (rv < 0) VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: EPOLL_CTL_DEL " "vep_idx %u failed! rv %d (%s)", getpid (), vpp_handle, session_index, vep_idx, rv, vppcom_retval_str (rv)); } if (state & STATE_LISTEN) { rv = vppcom_session_unbind (session_index); if (PREDICT_FALSE (rv < 0)) VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: listener unbind " "failed! rv %d (%s)", getpid (), vpp_handle, session_index, rv, vppcom_retval_str (rv)); } else if (state & (CLIENT_STATE_OPEN | SERVER_STATE_OPEN)) { rv = vppcom_session_disconnect (session_index); if (PREDICT_FALSE (rv < 0)) clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "session disconnect failed! rv %d (%s)", getpid (), vpp_handle, session_index, rv, vppcom_retval_str (rv)); } } VCL_SESSION_LOCK_AND_GET (session_index, &session); if (session->our_evt_q) vcl_ct_registration_del (session->ct_registration); vpp_handle = session->vpp_handle; if (vpp_handle != ~0) { p = hash_get (vcm->session_index_by_vpp_handles, vpp_handle); if (p) hash_unset (vcm->session_index_by_vpp_handles, vpp_handle); } pool_put_index (vcm->sessions, session_index); VCL_SESSION_UNLOCK (); if (VPPCOM_DEBUG > 0) { if (is_vep) clib_warning ("VCL<%d>: vep_idx %u / sid %u: epoll session removed.", getpid (), session_index, session_index); else clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: session removed.", getpid (), vpp_handle, session_index); } done: vcl_evt (VCL_EVT_CLOSE, session, rv); return rv; } int vppcom_session_bind (uint32_t session_index, vppcom_endpt_t * ep) { vcl_session_t *session = 0; int rv; if (!ep || !ep->ip) return VPPCOM_EINVAL; VCL_SESSION_LOCK_AND_GET (session_index, &session); if (session->is_vep) { VCL_SESSION_UNLOCK (); clib_warning ("VCL<%d>: ERROR: sid %u: cannot " "bind to an epoll session!", getpid (), session_index); rv = VPPCOM_EBADFD; goto done; } session->transport.is_ip4 = ep->is_ip4; if (ep->is_ip4) clib_memcpy (&session->transport.lcl_ip.ip4, ep->ip, sizeof (ip4_address_t)); else clib_memcpy (&session->transport.lcl_ip.ip6, ep->ip, sizeof (ip6_address_t)); session->transport.lcl_port = ep->port; VDBG (0, "VCL<%d>: sid %u: binding to local %s address %U port %u, " "proto %s", getpid (), session_index, 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), session->session_type ? "UDP" : "TCP"); vcl_evt (VCL_EVT_BIND, session); VCL_SESSION_UNLOCK (); done: return rv; } int vppcom_session_listen (uint32_t listen_session_index, uint32_t q_len) { vcl_session_t *listen_session = 0; u64 listen_vpp_handle; int rv, retval; if (q_len == 0 || q_len == ~0) q_len = vcm->cfg.listen_queue_size; VCL_SESSION_LOCK_AND_GET (listen_session_index, &listen_session); if (listen_session->is_vep) { VCL_SESSION_UNLOCK (); clib_warning ("VCL<%d>: ERROR: sid %u: cannot listen on an " "epoll session!", getpid (), listen_session_index); rv = VPPCOM_EBADFD; goto done; } listen_vpp_handle = listen_session->vpp_handle; if (listen_session->session_state & STATE_LISTEN) { VCL_SESSION_UNLOCK (); VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: already in listen state!", getpid (), listen_vpp_handle, listen_session_index); rv = VPPCOM_OK; goto done; } VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: sending VPP bind+listen " "request...", getpid (), listen_vpp_handle, listen_session_index); vppcom_send_bind_sock (listen_session, listen_session_index); VCL_SESSION_UNLOCK (); retval = vppcom_wait_for_session_state_change (listen_session_index, STATE_LISTEN, vcm->cfg.session_timeout); VCL_SESSION_LOCK_AND_GET (listen_session_index, &listen_session); if (PREDICT_FALSE (retval)) { VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: bind+listen failed! " "returning %d (%s)", getpid (), listen_session->vpp_handle, listen_session_index, retval, vppcom_retval_str (retval)); VCL_SESSION_UNLOCK (); rv = retval; goto done; } VCL_SESSION_UNLOCK (); done: return rv; } int validate_args_session_accept_ (vcl_session_t * listen_session) { u32 listen_session_index = listen_session - vcm->sessions; /* Input validation - expects spinlock on sessions_lockp */ if (listen_session->is_vep) { clib_warning ("VCL<%d>: ERROR: sid %u: cannot accept on an " "epoll session!", getpid (), listen_session_index); return VPPCOM_EBADFD; } if (listen_session->session_state != STATE_LISTEN) { clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "not in listen state! state 0x%x (%s)", getpid (), listen_session->vpp_handle, listen_session_index, listen_session->session_state, vppcom_session_state_str (listen_session->session_state)); return VPPCOM_EBADFD; } return VPPCOM_OK; } int vppcom_session_accept (uint32_t listen_session_index, vppcom_endpt_t * ep, uint32_t flags) { session_accepted_msg_t accepted_msg; vcl_session_t *listen_session = 0; vcl_session_t *client_session = 0; u32 client_session_index = ~0; svm_msg_q_t *vpp_evt_q; vcl_session_msg_t *evt; u64 listen_vpp_handle; svm_msg_q_msg_t msg; session_event_t *e; u8 is_nonblocking; int rv; VCL_SESSION_LOCK_AND_GET (listen_session_index, &listen_session); if (validate_args_session_accept_ (listen_session)) { VCL_SESSION_UNLOCK (); goto done; } VCL_SESSION_UNLOCK (); if (clib_fifo_elts (listen_session->accept_evts_fifo)) { clib_fifo_sub2 (listen_session->accept_evts_fifo, evt); accepted_msg = evt->accepted_msg; goto handle; } is_nonblocking = VCL_SESS_ATTR_TEST (listen_session->attr, VCL_SESS_ATTR_NONBLOCK); if (svm_msg_q_is_empty (vcm->app_event_queue) && is_nonblocking) return VPPCOM_EAGAIN; while (1) { if (svm_msg_q_sub (vcm->app_event_queue, &msg, SVM_Q_WAIT, 0)) return VPPCOM_EAGAIN; e = svm_msg_q_msg_data (vcm->app_event_queue, &msg); if (e->event_type != SESSION_CTRL_EVT_ACCEPTED) { clib_warning ("discarded event: %u", e->event_type); svm_msg_q_free_msg (vcm->app_event_queue, &msg); continue; } clib_memcpy (&accepted_msg, e->data, sizeof (accepted_msg)); svm_msg_q_free_msg (vcm->app_event_queue, &msg); break; } handle: client_session_index = vcl_session_accepted_handler (&accepted_msg); VCL_SESSION_LOCK_AND_GET (client_session_index, &client_session); rv = client_session_index; if (flags & O_NONBLOCK) VCL_SESS_ATTR_SET (client_session->attr, VCL_SESS_ATTR_NONBLOCK); listen_vpp_handle = listen_session->vpp_handle; VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: Got a client request! " "vpp handle 0x%llx, sid %u, flags %d, is_nonblocking %u", getpid (), listen_vpp_handle, listen_session_index, client_session->vpp_handle, client_session_index, 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 (ep->ip, &client_session->transport.rmt_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy (ep->ip, &client_session->transport.rmt_ip.ip6, sizeof (ip6_address_t)); } if (accepted_msg.server_event_queue_address) vpp_evt_q = uword_to_pointer (accepted_msg.vpp_event_queue_address, svm_msg_q_t *); else vpp_evt_q = client_session->vpp_evt_q; vcl_send_session_accepted_reply (vpp_evt_q, client_session->client_context, client_session->vpp_handle, 0); VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: accepted vpp handle 0x%llx, " "sid %u connection from peer %s address %U port %u to local %s " "address %U port %u", getpid (), listen_vpp_handle, listen_session_index, client_session->vpp_handle, client_session_index, client_session->transport.is_ip4 ? "IPv4" : "IPv6", 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), client_session->transport.is_ip4 ? "IPv4" : "IPv6", 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); VCL_SESSION_UNLOCK (); done: return rv; } int vppcom_session_connect (uint32_t session_index, vppcom_endpt_t * server_ep) { vcl_session_t *session = 0; u64 vpp_handle = 0; int rv, retval = VPPCOM_OK; VCL_SESSION_LOCK_AND_GET (session_index, &session); if (PREDICT_FALSE (session->is_vep)) { VCL_SESSION_UNLOCK (); clib_warning ("VCL<%d>: ERROR: sid %u: cannot " "connect on an epoll session!", getpid (), session_index); rv = VPPCOM_EBADFD; goto done; } if (PREDICT_FALSE (session->session_state & CLIENT_STATE_OPEN)) { VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: session already " "connected to %s %U port %d proto %s, state 0x%x (%s)", getpid (), session->vpp_handle, session_index, 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), session->session_type ? "UDP" : "TCP", session->session_state, vppcom_session_state_str (session->session_state)); VCL_SESSION_UNLOCK (); goto done; } session->transport.is_ip4 = server_ep->is_ip4; if (session->transport.is_ip4) clib_memcpy (&session->transport.rmt_ip.ip4, server_ep->ip, sizeof (ip4_address_t)); else clib_memcpy (&session->transport.rmt_ip.ip6, server_ep->ip, sizeof (ip6_address_t)); session->transport.rmt_port = server_ep->port; VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connecting to server %s %U " "port %d proto %s", getpid (), session->vpp_handle, session_index, 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), session->session_type ? "UDP" : "TCP"); vppcom_send_connect_sock (session, session_index); VCL_SESSION_UNLOCK (); retval = vppcom_wait_for_session_state_change (session_index, STATE_CONNECT, vcm->cfg.session_timeout); VCL_SESSION_LOCK_AND_GET (session_index, &session); vpp_handle = session->vpp_handle; VCL_SESSION_UNLOCK (); done: if (PREDICT_FALSE (retval)) { rv = retval; if (VPPCOM_DEBUG > 0) { if (session) clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: connect " "failed! returning %d (%s)", getpid (), vpp_handle, session_index, rv, vppcom_retval_str (rv)); else clib_warning ("VCL<%d>: no session for sid %u: connect failed! " "returning %d (%s)", getpid (), session_index, rv, vppcom_retval_str (rv)); } } else VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: connected!", getpid (), vpp_handle, session_index); return rv; } static u8 vcl_is_rx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct) { if (!is_ct) return (e->event_type == FIFO_EVENT_APP_RX && e->fifo->client_session_index == sid); else return (e->event_type == SESSION_IO_EVT_CT_TX); } static inline int vppcom_session_read_internal (uint32_t session_index, void *buf, int n, u8 peek) { int n_read = 0, rv, is_nonblocking; vcl_session_t *session = 0; svm_fifo_t *rx_fifo; svm_msg_q_msg_t msg; session_event_t *e; svm_msg_q_t *mq; u8 is_full; ASSERT (buf); VCL_SESSION_LOCK_AND_GET (session_index, &session); if (PREDICT_FALSE (session->is_vep)) { VCL_SESSION_UNLOCK (); clib_warning ("VCL<%d>: ERROR: sid %u: cannot " "read from an epoll session!", getpid (), session_index); rv = VPPCOM_EBADFD; goto done; } is_nonblocking = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK); rx_fifo = session->rx_fifo; if (PREDICT_FALSE (!(session->session_state & STATE_OPEN))) { session_state_t state = session->session_state; VCL_SESSION_UNLOCK (); rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN); VDBG (0, "VCL<%d>: vpp handle 0x%llx, sid %u: %s session is not open! " "state 0x%x (%s), returning %d (%s)", getpid (), session->vpp_handle, session_index, state, vppcom_session_state_str (state), rv, vppcom_retval_str (rv)); goto done; } VCL_SESSION_UNLOCK (); mq = session->our_evt_q ? session->our_evt_q : vcm->app_event_queue; is_full = svm_fifo_is_full (rx_fifo); if (svm_fifo_is_empty (rx_fifo)) { svm_fifo_unset_event (rx_fifo); if (is_nonblocking) { rv = VPPCOM_OK; goto done; } svm_msg_q_lock (mq); while (1) { 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); if (!vcl_is_rx_evt_for_session (e, session_index, session->our_evt_q != 0)) { vcl_handle_mq_ctrl_event (e); svm_msg_q_free_msg (mq, &msg); continue; } if (svm_fifo_is_empty (rx_fifo)) { svm_msg_q_free_msg (mq, &msg); continue; } svm_msg_q_free_msg (mq, &msg); svm_msg_q_unlock (mq); break; } } if (peek) n_read = svm_fifo_peek (rx_fifo, 0, n, buf); else n_read = svm_fifo_dequeue_nowait (rx_fifo, n, buf); ASSERT (n_read > 0); svm_fifo_unset_event (rx_fifo); if (session->our_evt_q && is_full) app_send_io_evt_to_vpp (session->vpp_evt_q, rx_fifo, SESSION_IO_EVT_CT_RX, SVM_Q_WAIT); if (VPPCOM_DEBUG > 2) { if (n_read > 0) clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: read %d bytes " "from (%p)", getpid (), session->vpp_handle, session_index, n_read, rx_fifo); else clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: nothing read! " "returning %d (%s)", getpid (), session->vpp_handle, session_index, rv, vppcom_retval_str (rv)); } return n_read; done: return rv; } int vppcom_session_read (uint32_t session_index, void *buf, size_t n) { return (vppcom_session_read_internal (session_index, buf, n, 0)); } static int vppcom_session_peek (uint32_t session_index, void *buf, int n) { return (vppcom_session_read_internal (session_index, buf, n, 1)); } static inline int vppcom_session_read_ready (vcl_session_t * session) { /* Assumes caller has acquired spinlock: vcm->sessions_lockp */ if (PREDICT_FALSE (session->is_vep)) { clib_warning ("VCL<%d>: ERROR: sid %u: cannot read from an " "epoll session!", getpid (), vcl_session_index (session)); return VPPCOM_EBADFD; } if (PREDICT_FALSE (!(session->session_state & (STATE_OPEN | STATE_LISTEN)))) { session_state_t state = session->session_state; int rv; rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open!" " state 0x%x (%s), returning %d (%s)", getpid (), session->vpp_handle, vcl_session_index (session), state, vppcom_session_state_str (state), rv, vppcom_retval_str (rv)); return rv; } if (session->session_state & STATE_LISTEN) return clib_fifo_elts (session->accept_evts_fifo); return svm_fifo_max_dequeue (session->rx_fifo); } static u8 vcl_is_tx_evt_for_session (session_event_t * e, u32 sid, u8 is_ct) { if (!is_ct) return (e->event_type == FIFO_EVENT_APP_TX && e->fifo->client_session_index == sid); else return (e->event_type == SESSION_IO_EVT_CT_RX); } int vppcom_session_write (uint32_t session_index, void *buf, size_t n) { int rv, n_write, is_nonblocking; vcl_session_t *session = 0; svm_fifo_t *tx_fifo = 0; svm_msg_q_msg_t msg; session_event_t *e; svm_msg_q_t *mq; ASSERT (buf); VCL_SESSION_LOCK_AND_GET (session_index, &session); tx_fifo = session->tx_fifo; is_nonblocking = VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK); if (PREDICT_FALSE (session->is_vep)) { VCL_SESSION_UNLOCK (); clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "cannot write to an epoll session!", getpid (), session->vpp_handle, session_index); rv = VPPCOM_EBADFD; goto done; } if (!(session->session_state & STATE_OPEN)) { session_state_t state = session->session_state; rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN); VCL_SESSION_UNLOCK (); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: session is not open! " "state 0x%x (%s)", getpid (), session->vpp_handle, session_index, state, vppcom_session_state_str (state)); goto done; } VCL_SESSION_UNLOCK (); mq = session->our_evt_q ? session->our_evt_q : vcm->app_event_queue; if (svm_fifo_is_full (tx_fifo)) { if (is_nonblocking) { rv = VPPCOM_EWOULDBLOCK; goto done; } svm_msg_q_lock (mq); while (1) { if (!svm_fifo_is_full (tx_fifo)) { svm_msg_q_unlock (mq); break; } if (svm_msg_q_is_empty (mq) && svm_msg_q_timedwait (mq, 10e-6)) continue; svm_msg_q_sub_w_lock (mq, &msg); e = svm_msg_q_msg_data (mq, &msg); if (!vcl_is_tx_evt_for_session (e, session_index, session->our_evt_q != 0)) { vcl_handle_mq_ctrl_event (e); svm_msg_q_free_msg (mq, &msg); continue; } if (svm_fifo_is_full (tx_fifo)) { svm_msg_q_free_msg (mq, &msg); continue; } svm_msg_q_free_msg (mq, &msg); svm_msg_q_unlock (mq); break; } } n_write = svm_fifo_enqueue_nowait (tx_fifo, n, (void *) buf); ASSERT (n_write > 0); if (svm_fifo_set_event (tx_fifo)) { session_evt_type_t et; VCL_SESSION_LOCK_AND_GET (session_index, &session); et = session->our_evt_q ? SESSION_IO_EVT_CT_TX : FIFO_EVENT_APP_TX; app_send_io_evt_to_vpp (session->vpp_evt_q, tx_fifo, et, SVM_Q_WAIT); VCL_SESSION_UNLOCK (); VDBG (1, "VCL<%d>: vpp handle 0x%llx, sid %u: added FIFO_EVENT_APP_TX " "to vpp_event_q %p, n_write %d", getpid (), session->vpp_handle, session_index, session->vpp_evt_q, n_write); } if (VPPCOM_DEBUG > 2) { if (n_write <= 0) clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: " "FIFO-FULL (%p)", getpid (), session->vpp_handle, session_index, tx_fifo); else clib_warning ("VCL<%d>: vpp handle 0x%llx, sid %u: " "wrote %d bytes tx-fifo: (%p)", getpid (), session->vpp_handle, session_index, n_write, tx_fifo); } return n_write; done: return rv; } static inline int vppcom_session_write_ready (vcl_session_t * session, u32 session_index) { /* Assumes caller has acquired spinlock: vcm->sessions_lockp */ if (PREDICT_FALSE (session->is_vep)) { clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "cannot write to an epoll session!", getpid (), session->vpp_handle, session_index); return VPPCOM_EBADFD; } if (PREDICT_FALSE (session->session_state & STATE_LISTEN)) { clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "cannot write to a listen session!", getpid (), session->vpp_handle, session_index); return VPPCOM_EBADFD; } if (PREDICT_FALSE (!(session->session_state & STATE_OPEN))) { session_state_t state = session->session_state; int rv; rv = ((state & STATE_DISCONNECT) ? VPPCOM_ECONNRESET : VPPCOM_ENOTCONN); clib_warning ("VCL<%d>: ERROR: vpp handle 0x%llx, sid %u: " "session is not open! state 0x%x (%s), " "returning %d (%s)", getpid (), session->vpp_handle, session_index, state, vppcom_session_state_str (state), rv, vppcom_retval_str (rv)); return rv; } VDBG (3, "VCL<%d>: vpp handle 0x%llx, sid %u: peek %s (%p), ready = %d", getpid (), session->vpp_handle, session_index, session->tx_fifo, svm_fifo_max_enqueue (session->tx_fifo)); return svm_fifo_max_enqueue (session->tx_fifo); } static int vcl_select_handle_mq (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) { session_disconnected_msg_t *disconnected_msg; session_accepted_msg_t *accepted_msg; vcl_session_msg_t *vcl_msg; vcl_session_t *session; svm_msg_q_msg_t msg; session_event_t *e; u32 n_msgs, i, sid; u64 handle; 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; } } } svm_msg_q_unlock (mq); n_msgs = svm_msg_q_size (mq); for (i = 0; i < n_msgs; i++) { if (svm_msg_q_sub (mq, &msg, SVM_Q_WAIT, 0)) { clib_warning ("message queue returned"); continue; } e = svm_msg_q_msg_data (mq, &msg); switch (e->event_type) { case FIFO_EVENT_APP_RX: sid = e->fifo->client_session_index; session = vcl_session_get (sid); if (!session || svm_fifo_is_empty (session->rx_fifo)) break; if (sid < n_bits && read_map) { clib_bitmap_set_no_check (read_map, sid, 1); *bits_set += 1; } break; case FIFO_EVENT_APP_TX: sid = e->fifo->client_session_index; session = vcl_session_get (sid); if (!session || svm_fifo_is_full (session->tx_fifo)) break; if (sid < n_bits && write_map) { clib_bitmap_set_no_check (write_map, sid, 1); *bits_set += 1; } break; case SESSION_IO_EVT_CT_TX: session = vcl_ct_session_get_from_fifo (e->fifo, 0); sid = vcl_session_index (session); if (!session || svm_fifo_is_empty (session->rx_fifo)) break; if (sid < n_bits && read_map) { clib_bitmap_set_no_check (read_map, sid, 1); *bits_set += 1; } break; break; case SESSION_IO_EVT_CT_RX: session = vcl_ct_session_get_from_fifo (e->fifo, 1); sid = vcl_session_index (session); if (!session || svm_fifo_is_full (session->tx_fifo)) break; if (sid < n_bits && write_map) { clib_bitmap_set_no_check (write_map, sid, 1); *bits_set += 1; } break; case SESSION_CTRL_EVT_ACCEPTED: accepted_msg = (session_accepted_msg_t *) e->data; handle = accepted_msg->listener_handle; session = vppcom_session_table_lookup_listener (handle); if (!session) { clib_warning ("VCL<%d>: ERROR: couldn't find listen session:" "listener handle %llx", getpid (), handle); break; } clib_fifo_add2 (session->accept_evts_fifo, vcl_msg); vcl_msg->accepted_msg = *accepted_msg; sid = session - vcm->sessions; if (sid < n_bits && read_map) { clib_bitmap_set_no_check (read_map, sid, 1); *bits_set += 1; } break; case SESSION_CTRL_EVT_DISCONNECTED: disconnected_msg = (session_disconnected_msg_t *) e->data; sid = vcl_session_get_index_from_handle (disconnected_msg->handle); if (sid < n_bits && except_map) { clib_bitmap_set_no_check (except_map, sid, 1); *bits_set += 1; } break; default: clib_warning ("unhandled: %u", e->event_type); break; } svm_msg_q_free_msg (mq, &msg); } return *bits_set; } int vppcom_select (unsigned long n_bits, unsigned long *read_map, unsigned long *write_map, unsigned long *except_map, double time_to_wait) { u32 sid, minbits = clib_max (n_bits, BITS (uword)), bits_set = 0; vcl_cut_through_registration_t *cr; double total_wait = 0, wait_slice; vcl_session_t *session = 0; int rv; ASSERT (sizeof (clib_bitmap_t) == sizeof (long int)); if (n_bits && read_map) { clib_bitmap_validate (vcm->rd_bitmap, minbits); clib_memcpy (vcm->rd_bitmap, read_map, vec_len (vcm->rd_bitmap) * sizeof (clib_bitmap_t)); memset (read_map, 0, vec_len (vcm->rd_bitmap) * sizeof (clib_bitmap_t)); } if (n_bits && write_map) { clib_bitmap_validate (vcm->wr_bitmap, minbits); clib_memcpy (vcm->wr_bitmap, write_map, vec_len (vcm->wr_bitmap) * sizeof (clib_bitmap_t)); memset (write_map, 0, vec_len (vcm->wr_bitmap) * sizeof (clib_bitmap_t)); } if (n_bits && except_map) { clib_bitmap_validate (vcm->ex_bitmap, minbits); clib_memcpy (vcm->ex_bitmap, except_map, vec_len (vcm->ex_bitmap) * sizeof (clib_bitmap_t)); memset (except_map, 0, vec_len (vcm->ex_bitmap) * sizeof (clib_bitmap_t)); } if (!n_bits) return 0; if (!write_map) goto check_rd; /* *INDENT-OFF* */ clib_bitmap_foreach (sid, vcm->wr_bitmap, ({ VCL_SESSION_LOCK(); if (!(session = vcl_session_get (sid))) { VCL_SESSION_UNLOCK(); VDBG (0, "VCL<%d>: session %d specified in write_map is closed.", getpid (), sid); return VPPCOM_EBADFD; } rv = svm_fifo_is_full (session->tx_fifo); VCL_SESSION_UNLOCK(); if (!rv) { clib_bitmap_set_no_check (write_map, sid, 1); bits_set++; } })); check_rd: if (!read_map) goto check_mq; clib_bitmap_foreach (sid, vcm->rd_bitmap, ({ VCL_SESSION_LOCK(); if (!(session = vcl_session_get (sid))) { VCL_SESSION_UNLOCK(); VDBG (0, "VCL<%d>: session %d specified in write_map is closed.", getpid (), sid); return VPPCOM_EBADFD; } rv = vppcom_session_read_ready (session); VCL_SESSION_UNLOCK(); if (rv) { clib_bitmap_set_no_check (read_map, sid, 1); bits_set++; } })); /* *INDENT-ON* */ check_mq: wait_slice = vcm->cut_through_registrations ? 10e-6 : time_to_wait; do { /* *INDENT-OFF* */ pool_foreach (cr, vcm->cut_through_registrations, ({ vcl_select_handle_mq (cr->mq, n_bits, read_map, write_map, except_map, 0, &bits_set); })); /* *INDENT-ON* */ vcl_select_handle_mq (vcm->app_event_queue, n_bits, read_map, write_map, except_map, time_to_wait, &bits_set); total_wait += wait_slice; if (bits_set) return bits_set; } while (total_wait < time_to_wait); return (bits_set); } static inline void vep_verify_epoll_chain (u32 vep_idx) { vcl_session_t *session; vppcom_epoll_t *vep; int rv; u32 sid = vep_idx; if (VPPCOM_DEBUG <= 1) return; /* Assumes caller has acquired spinlock: vcm->sessions_lockp */ rv = vppcom_session_at_index (vep_idx, &session); if (PREDICT_FALSE (rv)) { clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", getpid (), vep_idx); goto done; } if (PREDICT_FALSE (!session->is_vep)) { clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!", getpid (), vep_idx); goto done; } vep = &session->vep; clib_warning ("VCL<%d>: vep_idx (%u): Dumping epoll chain\n" "{\n" " is_vep = %u\n" " is_vep_session = %u\n" " next_sid = 0x%x (%u)\n" " wait_cont_idx = 0x%x (%u)\n" "}\n", getpid (), vep_idx, session->is_vep, session->is_vep_session, vep->next_sid, vep->next_sid, session->wait_cont_idx, session->wait_cont_idx); for (sid = vep->next_sid; sid != ~0; sid = vep->next_sid) { rv = vppcom_session_at_index (sid, &session); if (PREDICT_FALSE (rv)) { clib_warning ("VCL<%d>: ERROR: Invalid sid (%u)!", getpid (), sid); goto done; } if (PREDICT_FALSE (session->is_vep)) clib_warning ("VCL<%d>: ERROR: sid (%u) is a vep!", getpid (), vep_idx); else if (PREDICT_FALSE (!session->is_vep_session)) { clib_warning ("VCL<%d>: ERROR: session (%u) " "is not a vep session!", getpid (), sid); goto done; } vep = &session->vep; if (PREDICT_FALSE (vep->vep_idx != vep_idx)) clib_warning ("VCL<%d>: ERROR: session (%u) vep_idx (%u) != " "vep_idx (%u)!", getpid (), sid, session->vep.vep_idx, vep_idx); if (session->is_vep_session) { clib_warning ("vep_idx[%u]: sid 0x%x (%u)\n" "{\n" " next_sid = 0x%x (%u)\n" " prev_sid = 0x%x (%u)\n" " vep_idx = 0x%x (%u)\n" " ev.events = 0x%x\n" " ev.data.u64 = 0x%llx\n" " et_mask = 0x%x\n" "}\n", vep_idx, sid, sid, vep->next_sid, vep->next_sid, vep->prev_sid, vep->prev_sid, vep->vep_idx, vep->vep_idx, vep->ev.events, vep->ev.data.u64, vep->et_mask); } } done: clib_warning ("VCL<%d>: vep_idx (%u): Dump complete!\n", getpid (), vep_idx); } int vppcom_epoll_create (void) { vcl_session_t *vep_session; u32 vep_idx; VCL_SESSION_LOCK (); pool_get (vcm->sessions, vep_session); memset (vep_session, 0, sizeof (*vep_session)); vep_idx = vep_session - vcm->sessions; vep_session->is_vep = 1; vep_session->vep.vep_idx = ~0; vep_session->vep.next_sid = ~0; vep_session->vep.prev_sid = ~0; vep_session->wait_cont_idx = ~0; vep_session->vpp_handle = ~0; vep_session->poll_reg = 0; vcl_evt (VCL_EVT_EPOLL_CREATE, vep_session, vep_idx); VCL_SESSION_UNLOCK (); VDBG (0, "VCL<%d>: Created vep_idx %u / sid %u!", getpid (), vep_idx, vep_idx); return (vep_idx); } int vppcom_epoll_ctl (uint32_t vep_idx, int op, uint32_t session_index, struct epoll_event *event) { vcl_session_t *vep_session; vcl_session_t *session; int rv; if (vep_idx == session_index) { clib_warning ("VCL<%d>: ERROR: vep_idx == session_index (%u)!", getpid (), vep_idx); return VPPCOM_EINVAL; } VCL_SESSION_LOCK (); rv = vppcom_session_at_index (vep_idx, &vep_session); if (PREDICT_FALSE (rv)) { clib_warning ("VCL<%d>: ERROR: Invalid vep_idx (%u)!", vep_idx); goto done; } if (PREDICT_FALSE (!vep_session->is_vep)) { clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!", getpid (), vep_idx); rv = VPPCOM_EINVAL; goto done; } ASSERT (vep_session->vep.vep_idx == ~0); ASSERT (vep_session->vep.prev_sid == ~0); rv = vppcom_session_at_index (session_index, &session); if (PREDICT_FALSE (rv)) { VDBG (0, "VCL<%d>: ERROR: Invalid session_index (%u)!", getpid (), session_index); goto done; } if (PREDICT_FALSE (session->is_vep)) { clib_warning ("ERROR: session_index (%u) is a vep!", vep_idx); rv = VPPCOM_EINVAL; goto done; } switch (op) { case EPOLL_CTL_ADD: if (PREDICT_FALSE (!event)) { clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: NULL pointer to " "epoll_event structure!", getpid ()); rv = VPPCOM_EINVAL; goto done; } if (vep_session->vep.next_sid != ~0) { vcl_session_t *next_session; rv = vppcom_session_at_index (vep_session->vep.next_sid, &next_session); if (PREDICT_FALSE (rv)) { clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_ADD: Invalid " "vep.next_sid (%u) on vep_idx (%u)!", getpid (), vep_session->vep.next_sid, vep_idx); goto done; } ASSERT (next_session->vep.prev_sid == vep_idx); next_session->vep.prev_sid = session_index; } session->vep.next_sid = vep_session->vep.next_sid; session->vep.prev_sid = vep_idx; session->vep.vep_idx = vep_idx; 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_sid = session_index; /* VCL Event Register handler */ if (session->session_state & STATE_LISTEN) { /* Register handler for connect_request event on listen_session_index */ vce_event_key_t evk; evk.session_index = session_index; evk.eid = VCL_EVENT_CONNECT_REQ_ACCEPTED; vep_session->poll_reg = vce_register_handler (&vcm->event_thread, &evk, vce_poll_wait_connect_request_handler_fn, 0 /* No callback args */ ); } VDBG (1, "VCL<%d>: EPOLL_CTL_ADD: vep_idx %u, " "sid %u, events 0x%x, data 0x%llx!", getpid (), vep_idx, session_index, 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)) { clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_MOD: NULL pointer to " "epoll_event structure!", getpid ()); rv = VPPCOM_EINVAL; goto done; } else if (PREDICT_FALSE (!session->is_vep_session)) { clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: " "not a vep session!", getpid (), session_index); rv = VPPCOM_EINVAL; goto done; } else if (PREDICT_FALSE (session->vep.vep_idx != vep_idx)) { clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_MOD: " "vep_idx (%u) != vep_idx (%u)!", getpid (), session_index, session->vep.vep_idx, vep_idx); rv = VPPCOM_EINVAL; goto done; } session->vep.et_mask = VEP_DEFAULT_ET_MASK; session->vep.ev = *event; VDBG (1, "VCL<%d>: EPOLL_CTL_MOD: vep_idx %u, sid %u, events 0x%x," " data 0x%llx!", getpid (), vep_idx, session_index, event->events, event->data.u64); break; case EPOLL_CTL_DEL: if (PREDICT_FALSE (!session->is_vep_session)) { clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: " "not a vep session!", getpid (), session_index); rv = VPPCOM_EINVAL; goto done; } else if (PREDICT_FALSE (session->vep.vep_idx != vep_idx)) { clib_warning ("VCL<%d>: ERROR: sid %u EPOLL_CTL_DEL: " "vep_idx (%u) != vep_idx (%u)!", getpid (), session_index, session->vep.vep_idx, vep_idx); rv = VPPCOM_EINVAL; goto done; } /* VCL Event Un-register handler */ if ((session->session_state & STATE_LISTEN) && vep_session->poll_reg) { (void) vce_unregister_handler (&vcm->event_thread, vep_session->poll_reg); } vep_session->wait_cont_idx = (vep_session->wait_cont_idx == session_index) ? session->vep.next_sid : vep_session->wait_cont_idx; if (session->vep.prev_sid == vep_idx) vep_session->vep.next_sid = session->vep.next_sid; else { vcl_session_t *prev_session; rv = vppcom_session_at_index (session->vep.prev_sid, &prev_session); if (PREDICT_FALSE (rv)) { clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid " "vep.prev_sid (%u) on sid (%u)!", getpid (), session->vep.prev_sid, session_index); goto done; } ASSERT (prev_session->vep.next_sid == session_index); prev_session->vep.next_sid = session->vep.next_sid; } if (session->vep.next_sid != ~0) { vcl_session_t *next_session; rv = vppcom_session_at_index (session->vep.next_sid, &next_session); if (PREDICT_FALSE (rv)) { clib_warning ("VCL<%d>: ERROR: EPOLL_CTL_DEL: Invalid " "vep.next_sid (%u) on sid (%u)!", getpid (), session->vep.next_sid, session_index); goto done; } ASSERT (next_session->vep.prev_sid == session_index); next_session->vep.prev_sid = session->vep.prev_sid; } memset (&session->vep, 0, sizeof (session->vep)); session->vep.next_sid = ~0; session->vep.prev_sid = ~0; session->vep.vep_idx = ~0; session->is_vep_session = 0; VDBG (1, "VCL<%d>: EPOLL_CTL_DEL: vep_idx %u, sid %u!", getpid (), vep_idx, session_index); vcl_evt (VCL_EVT_EPOLL_CTLDEL, session, vep_idx); break; default: clib_warning ("VCL<%d>: ERROR: Invalid operation (%d)!", getpid (), op); rv = VPPCOM_EINVAL; } vep_verify_epoll_chain (vep_idx); done: VCL_SESSION_UNLOCK (); return rv; } static int vcl_epoll_wait_handle_mq (svm_msg_q_t * mq, struct epoll_event *events, u32 maxevents, double wait_for_time, u32 * num_ev) { session_disconnected_msg_t *disconnected_msg; session_connected_msg_t *connected_msg; session_accepted_msg_t *accepted_msg; u32 sid = ~0, session_events, n_msgs; u64 session_evt_data = ~0, handle; vcl_session_msg_t *vcl_msg; vcl_session_t *session; svm_msg_q_msg_t msg; session_event_t *e; u8 add_event; int i; 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; } } } svm_msg_q_unlock (mq); n_msgs = svm_msg_q_size (mq); for (i = 0; i < n_msgs; i++) { if (svm_msg_q_sub (mq, &msg, SVM_Q_WAIT, 0)) { clib_warning ("message queue returned"); continue; } e = svm_msg_q_msg_data (mq, &msg); add_event = 0; switch (e->event_type) { case FIFO_EVENT_APP_RX: sid = e->fifo->client_session_index; clib_spinlock_lock (&vcm->sessions_lockp); session = vcl_session_get (sid); session_events = session->vep.ev.events; if ((EPOLLIN & session->vep.ev.events) && !svm_fifo_is_empty (session->rx_fifo)) { add_event = 1; events[*num_ev].events |= EPOLLIN; session_evt_data = session->vep.ev.data.u64; } clib_spinlock_unlock (&vcm->sessions_lockp); break; case FIFO_EVENT_APP_TX: sid = e->fifo->client_session_index; clib_spinlock_lock (&vcm->sessions_lockp); session = vcl_session_get (sid); session_events = session->vep.ev.events; if ((EPOLLOUT & session_events) && !svm_fifo_is_full (session->tx_fifo)) { add_event = 1; events[*num_ev].events |= EPOLLOUT; session_evt_data = session->vep.ev.data.u64; } clib_spinlock_unlock (&vcm->sessions_lockp); break; case SESSION_IO_EVT_CT_TX: session = vcl_ct_session_get_from_fifo (e->fifo, 0); sid = vcl_session_index (session); session_events = session->vep.ev.events; if ((EPOLLIN & session->vep.ev.events) && !svm_fifo_is_empty (session->rx_fifo)) { add_event = 1; events[*num_ev].events |= EPOLLIN; session_evt_data = session->vep.ev.data.u64; } break; case SESSION_IO_EVT_CT_RX: session = vcl_ct_session_get_from_fifo (e->fifo, 1); sid = vcl_session_index (session); session_events = session->vep.ev.events; if ((EPOLLOUT & session_events) && !svm_fifo_is_full (session->tx_fifo)) { add_event = 1; events[*num_ev].events |= EPOLLOUT; session_evt_data = session->vep.ev.data.u64; } break; case SESSION_CTRL_EVT_ACCEPTED: accepted_msg = (session_accepted_msg_t *) e->data; handle = accepted_msg->listener_handle; session = vppcom_session_table_lookup_listener (handle); if (!session) { clib_warning ("VCL<%d>: ERROR: couldn't find listen session:" "listener handle %llx", getpid (), handle); break; } clib_fifo_add2 (session->accept_evts_fifo, vcl_msg); vcl_msg->accepted_msg = *accepted_msg; 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; vcl_session_connected_handler (connected_msg); /* Generate EPOLLOUT because there's no connected event */ sid = vcl_session_get_index_from_handle (connected_msg->handle); clib_spinlock_lock (&vcm->sessions_lockp); session = vcl_session_get (sid); session_events = session->vep.ev.events; if (EPOLLOUT & session_events) { add_event = 1; events[*num_ev].events |= EPOLLOUT; session_evt_data = session->vep.ev.data.u64; } clib_spinlock_unlock (&vcm->sessions_lockp); break; case SESSION_CTRL_EVT_DISCONNECTED: disconnected_msg = (session_disconnected_msg_t *) e->data; sid = vcl_session_get_index_from_handle (disconnected_msg->handle); clib_spinlock_lock (&vcm->sessions_lockp); session = vcl_session_get (sid); add_event = 1; events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP; session_evt_data = session->vep.ev.data.u64; session_events = session->vep.ev.events; clib_spinlock_unlock (&vcm->sessions_lockp); break; default: clib_warning ("unhandled: %u", e->event_type); svm_msg_q_free_msg (mq, &msg); continue; } svm_msg_q_free_msg (mq, &msg); if (add_event) { events[*num_ev].data.u64 = session_evt_data; if (EPOLLONESHOT & session_events) { clib_spinlock_lock (&vcm->sessions_lockp); session = vcl_session_get (sid); session->vep.ev.events = 0; clib_spinlock_unlock (&vcm->sessions_lockp); } *num_ev += 1; if (*num_ev == maxevents) break; } } return *num_ev; } int vppcom_epoll_wait (uint32_t vep_idx, struct epoll_event *events, int maxevents, double wait_for_time) { vcl_cut_through_registration_t *cr; vcl_session_t *vep_session; double total_wait = 0, wait_slice; u32 num_ev = 0; if (PREDICT_FALSE (maxevents <= 0)) { clib_warning ("VCL<%d>: ERROR: Invalid maxevents (%d)!", getpid (), maxevents); return VPPCOM_EINVAL; } clib_spinlock_lock (&vcm->sessions_lockp); vep_session = vcl_session_get (vep_idx); if (PREDICT_FALSE (!vep_session->is_vep)) { clib_warning ("VCL<%d>: ERROR: vep_idx (%u) is not a vep!", getpid (), vep_idx); clib_spinlock_unlock (&vcm->sessions_lockp); return VPPCOM_EINVAL; } clib_spinlock_unlock (&vcm->sessions_lockp); memset (events, 0, sizeof (*events) * maxevents); wait_slice = vcm->cut_through_registrations ? 10e-6 : wait_for_time; do { /* *INDENT-OFF* */ pool_foreach (cr, vcm->cut_through_registrations, ({ vcl_epoll_wait_handle_mq (cr->mq, events, maxevents, 0, &num_ev); })); /* *INDENT-ON* */ vcl_epoll_wait_handle_mq (vcm->app_event_queue, events, maxevents, num_ev ? 0 : wait_slice, &num_ev); total_wait += wait_slice; if (num_ev) return num_ev; } while (total_wait < wait_for_time); return num_ev; } int vppcom_session_attr (uint32_t session_index, uint32_t op, void *buffer, uint32_t * buflen) { vcl_session_t *session; int rv = VPPCOM_OK; u32 *flags = buffer; vppcom_endpt_t *ep = buffer; VCL_SESSION_LOCK_AND_GET (session_index, &session); ASSERT (session); switch (op) { case VPPCOM_ATTR_GET_NREAD: rv = vppcom_session_read_ready (session); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NREAD: sid %u, nread = %d", getpid (), rv); break; case VPPCOM_ATTR_GET_NWRITE: rv = vppcom_session_write_ready (session, session_index); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_NWRITE: sid %u, nwrite = %d", getpid (), session_index, 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, "VCL<%d>: VPPCOM_ATTR_GET_FLAGS: sid %u, flags = 0x%08x, " "is_nonblocking = %u", getpid (), session_index, *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, "VCL<%d>: VPPCOM_ATTR_SET_FLAGS: sid %u, flags = 0x%08x," " is_nonblocking = %u", getpid (), session_index, *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 (ep->ip, &session->transport.rmt_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy (ep->ip, &session->transport.rmt_ip.ip6, sizeof (ip6_address_t)); *buflen = sizeof (*ep); VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_PEER_ADDR: sid %u, is_ip4 = %u, " "addr = %U, port %u", getpid (), session_index, 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 (ep->ip, &session->transport.lcl_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy (ep->ip, &session->transport.lcl_ip.ip6, sizeof (ip6_address_t)); *buflen = sizeof (*ep); VDBG (1, "VCL<%d>: VPPCOM_ATTR_GET_LCL_ADDR: sid %u, is_ip4 = %u," " addr = %U port %d", getpid (), session_index, 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, "VCL<%d>: VPPCOM_ATTR_GET_LIBC_EPFD: libc_epfd %d", getpid (), 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, "VCL<%d>: VPPCOM_ATTR_SET_LIBC_EPFD: libc_epfd %d, " "buflen %d", getpid (), 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, "VCL<%d>: VPPCOM_ATTR_GET_PROTOCOL: %d (%s), buflen %d", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_GET_LISTEN: %d, buflen %d", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_GET_ERROR: %d, buflen %d, #VPP-TBD#", getpid (), *(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 ? session->tx_fifo->nitems : vcm->cfg.tx_fifo_size); *buflen = sizeof (u32); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_TX_FIFO_LEN: %u (0x%x), " "buflen %d, #VPP-TBD#", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_SET_TX_FIFO_LEN: %u (0x%x), " "buflen %d, #VPP-TBD#", getpid (), 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 ? session->rx_fifo->nitems : vcm->cfg.rx_fifo_size); *buflen = sizeof (u32); VDBG (2, "VCL<%d>: VPPCOM_ATTR_GET_RX_FIFO_LEN: %u (0x%x), " "buflen %d, #VPP-TBD#", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_SET_RX_FIFO_LEN: %u (0x%x), " "buflen %d, #VPP-TBD#", getpid (), 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, "VCL<%d>: VPPCOM_ATTR_GET_REUSEADDR: %d, " "buflen %d, #VPP-TBD#", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_SET_REUSEADDR: %d, buflen %d," " #VPP-TBD#", getpid (), 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, "VCL<%d>: VPPCOM_ATTR_GET_REUSEPORT: %d, buflen %d," " #VPP-TBD#", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_SET_REUSEPORT: %d, buflen %d," " #VPP-TBD#", getpid (), 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, "VCL<%d>: VPPCOM_ATTR_GET_BROADCAST: %d, buflen %d," " #VPP-TBD#", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_SET_BROADCAST: %d, buflen %d, " "#VPP-TBD#", getpid (), 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, "VCL<%d>: VPPCOM_ATTR_GET_V6ONLY: %d, buflen %d, " "#VPP-TBD#", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_SET_V6ONLY: %d, buflen %d, " "#VPP-TBD#", getpid (), 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, "VCL<%d>: VPPCOM_ATTR_GET_KEEPALIVE: %d, buflen %d, " "#VPP-TBD#", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_SET_KEEPALIVE: %d, buflen %d, " "#VPP-TBD#", getpid (), 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, "VCL<%d>: VPPCOM_ATTR_GET_TCP_NODELAY: %d, buflen %d, " "#VPP-TBD#", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_SET_TCP_NODELAY: %d, buflen %d, " "#VPP-TBD#", getpid (), 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, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPIDLE: %d, buflen %d, " "#VPP-TBD#", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPIDLE: %d, buflen %d, " "#VPP-TBD#", getpid (), 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, "VCL<%d>: VPPCOM_ATTR_GET_TCP_KEEPINTVL: %d, buflen %d, " "#VPP-TBD#", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_SET_TCP_KEEPINTVL: %d, buflen %d, " "#VPP-TBD#", getpid (), 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, "VCL<%d>: VPPCOM_ATTR_GET_TCP_USER_MSS: %d, buflen %d," " #VPP-TBD#", getpid (), *(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, "VCL<%d>: VPPCOM_ATTR_SET_TCP_USER_MSS: %u, buflen %d, " "#VPP-TBD#", getpid (), session->user_mss, *buflen); } else rv = VPPCOM_EINVAL; break; default: rv = VPPCOM_EINVAL; break; } done: VCL_SESSION_UNLOCK (); return rv; } int vppcom_session_recvfrom (uint32_t session_index, void *buffer, uint32_t buflen, int flags, vppcom_endpt_t * ep) { int rv = VPPCOM_OK; vcl_session_t *session = 0; if (ep) { VCL_SESSION_LOCK (); rv = vppcom_session_at_index (session_index, &session); if (PREDICT_FALSE (rv)) { VCL_SESSION_UNLOCK (); VDBG (0, "VCL<%d>: invalid session, sid (%u) has been closed!", getpid (), session_index); rv = VPPCOM_EBADFD; VCL_SESSION_UNLOCK (); goto done; } ep->is_ip4 = session->transport.is_ip4; ep->port = session->transport.rmt_port; if (session->transport.is_ip4) clib_memcpy (ep->ip, &session->transport.rmt_ip.ip4, sizeof (ip4_address_t)); else clib_memcpy (ep->ip, &session->transport.rmt_ip.ip6, sizeof (ip6_address_t)); VCL_SESSION_UNLOCK (); } if (flags == 0) rv = vppcom_session_read (session_index, buffer, buflen); else if (flags & MSG_PEEK) rv = vppcom_session_peek (session_index, buffer, buflen); else { clib_warning ("VCL<%d>: Unsupport flags for recvfrom %d", getpid (), flags); rv = VPPCOM_EAFNOSUPPORT; } done: return rv; } int vppcom_session_sendto (uint32_t session_index, void *buffer, uint32_t buflen, int flags, vppcom_endpt_t * ep) { if (!buffer) return VPPCOM_EINVAL; if (ep) { // TBD return VPPCOM_EINVAL; } if (flags) { // TBD check the flags and do the right thing VDBG (2, "VCL<%d>: handling flags 0x%u (%d) not implemented yet.", getpid (), flags, flags); } return (vppcom_session_write (session_index, buffer, buflen)); } int vppcom_poll (vcl_poll_t * vp, uint32_t n_sids, double wait_for_time) { f64 timeout = clib_time_now (&vcm->clib_time) + wait_for_time; u32 i, keep_trying = 1; int rv, num_ev = 0; VDBG (3, "VCL<%d>: vp %p, nsids %u, wait_for_time %f", getpid (), vp, n_sids, wait_for_time); if (!vp) return VPPCOM_EFAULT; do { vcl_session_t *session; for (i = 0; i < n_sids; i++) { ASSERT (vp[i].revents); VCL_SESSION_LOCK_AND_GET (vp[i].sid, &session); VCL_SESSION_UNLOCK (); if (*vp[i].revents) *vp[i].revents = 0; if (POLLIN & vp[i].events) { VCL_SESSION_LOCK_AND_GET (vp[i].sid, &session); rv = vppcom_session_read_ready (session); VCL_SESSION_UNLOCK (); 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) { VCL_SESSION_LOCK_AND_GET (vp[i].sid, &session); rv = vppcom_session_write_ready (session, vp[i].sid); VCL_SESSION_UNLOCK (); 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() { done: *vp[i].revents = POLLNVAL; num_ev++; } } if (wait_for_time != -1) keep_trying = (clib_time_now (&vcm->clib_time) <= timeout) ? 1 : 0; } while ((num_ev == 0) && keep_trying); if (VPPCOM_DEBUG > 3) { clib_warning ("VCL<%d>: returning %d", getpid (), num_ev); for (i = 0; i < n_sids; i++) { clib_warning ("VCL<%d>: vp[%d].sid %d (0x%x), .events 0x%x, " ".revents 0x%x", getpid (), i, vp[i].sid, vp[i].sid, vp[i].events, *vp[i].revents); } } return num_ev; } /* * fd.io coding-style-patch-verification: ON * * Local Variables: * eval: (c-set-style "gnu") * End: */