X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvcl%2Fvppcom.c;h=d73c73be383d302a12029d8ae6f462190070f255;hb=a3a489691d7f2813702fae2d915120743b860d62;hp=ba1f11665568c5f6ee7b376446af6ebe1de58543;hpb=0a1e183e5aa45fb0050eb03e1c8ebdb9f426a374;p=vpp.git diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c index ba1f1166556..d73c73be383 100644 --- a/src/vcl/vppcom.c +++ b/src/vcl/vppcom.c @@ -209,6 +209,8 @@ vcl_send_session_listen (vcl_worker_t * wrk, vcl_session_t * s) 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); } @@ -349,6 +351,39 @@ vcl_send_session_worker_update (vcl_worker_t * wrk, vcl_session_t * s, app_send_ctrl_evt_to_vpp (mq, app_evt); } +int +vcl_send_worker_rpc (u32 dst_wrk_index, void *data, u32 data_len) +{ + app_session_evt_t _app_evt, *app_evt = &_app_evt; + session_app_wrk_rpc_msg_t *mp; + vcl_worker_t *dst_wrk, *wrk; + svm_msg_q_t *mq; + int ret = -1; + + if (data_len > sizeof (mp->data)) + goto done; + + clib_spinlock_lock (&vcm->workers_lock); + + dst_wrk = vcl_worker_get_if_valid (dst_wrk_index); + if (!dst_wrk) + goto done; + + wrk = vcl_worker_get_current (); + mq = vcl_worker_ctrl_mq (wrk); + app_alloc_ctrl_evt_to_vpp (mq, app_evt, SESSION_CTRL_EVT_APP_WRK_RPC); + mp = (session_app_wrk_rpc_msg_t *) app_evt->evt->data; + mp->client_index = wrk->my_client_index; + mp->wrk_index = dst_wrk->vpp_wrk_index; + clib_memcpy (mp->data, data, data_len); + app_send_ctrl_evt_to_vpp (mq, app_evt); + ret = 0; + +done: + clib_spinlock_unlock (&vcm->workers_lock); + return ret; +} + static u32 vcl_session_accepted_handler (vcl_worker_t * wrk, session_accepted_msg_t * mp, u32 ls_index) @@ -445,7 +480,7 @@ vcl_session_connected_handler (vcl_worker_t * wrk, if (mp->retval) { VDBG (0, "ERROR: session index %u: connect failed! %U", - session_index, format_api_error, ntohl (mp->retval)); + session_index, format_session_error, mp->retval); session->session_state = STATE_DETACHED | STATE_DISCONNECT; session->vpp_handle = mp->handle; return session_index; @@ -550,7 +585,8 @@ vcl_session_reset_handler (vcl_worker_t * wrk, return VCL_INVALID_SESSION_INDEX; } - session->session_state = STATE_DISCONNECT; + if (session->session_state != STATE_CLOSED) + session->session_state = STATE_DISCONNECT; VDBG (0, "reset session %u [0x%llx]", sid, reset_msg->handle); return sid; } @@ -565,7 +601,7 @@ vcl_session_bound_handler (vcl_worker_t * wrk, session_bound_msg_t * mp) if (mp->retval) { VERR ("session %u [0x%llx]: bind failed: %U", sid, mp->handle, - format_api_error, mp->retval); + format_session_error, mp->retval); if (session) { session->session_state = STATE_DETACHED; @@ -633,7 +669,7 @@ vcl_session_unlisten_reply_handler (vcl_worker_t * wrk, void *data) if (mp->retval) VDBG (0, "ERROR: session %u [0xllx]: unlisten failed: %U", - s->session_index, mp->handle, format_api_error, ntohl (mp->retval)); + s->session_index, mp->handle, format_session_error, mp->retval); if (mp->context != wrk->wrk_index) VDBG (0, "wrong context"); @@ -656,6 +692,7 @@ vcl_session_migrated_handler (vcl_worker_t * wrk, void *data) } 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); @@ -669,7 +706,8 @@ vcl_session_migrated_handler (vcl_worker_t * wrk, void *data) 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%x to thread %u", mp->handle, s->vpp_thread_index); + VDBG (0, "Migrated 0x%lx to thread %u 0x%lx", mp->handle, + s->vpp_thread_index, mp->new_handle); } static vcl_session_t * @@ -747,6 +785,17 @@ vcl_session_cleanup_handler (vcl_worker_t * wrk, void *data) 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) @@ -850,6 +899,15 @@ vcl_session_app_del_segment_handler (vcl_worker_t * wrk, void *data) VDBG (1, "Unmapped segment: %d", msg->segment_handle); } +static void +vcl_worker_rpc_handler (vcl_worker_t * wrk, void *data) +{ + if (!vcm->wrk_rpc_fn) + return; + + (vcm->wrk_rpc_fn) (((session_app_wrk_rpc_msg_t *) data)->data); +} + static int vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e) { @@ -907,6 +965,9 @@ vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e) case SESSION_CTRL_EVT_APP_DEL_SEGMENT: vcl_session_app_del_segment_handler (wrk, e->data); break; + case SESSION_CTRL_EVT_APP_WRK_RPC: + vcl_worker_rpc_handler (wrk, e->data); + break; default: clib_warning ("unhandled %u", e->event_type); } @@ -1146,7 +1207,7 @@ vppcom_app_exit (void) * VPPCOM Public API functions */ int -vppcom_app_create (char *app_name) +vppcom_app_create (const char *app_name) { vppcom_cfg_t *vcl_cfg = &vcm->cfg; int rv; @@ -1209,35 +1270,39 @@ vppcom_app_create (char *app_name) void vppcom_app_destroy (void) { - int rv; - f64 orig_app_timeout; + vcl_worker_t *wrk, *current_wrk; + struct dlmallinfo mi; + mspace heap; if (!pool_elts (vcm->workers)) return; vcl_evt (VCL_EVT_DETACH, vcm); - if (pool_elts (vcm->workers) == 1) - { - vcl_send_app_detach (vcl_worker_get_current ()); - orig_app_timeout = vcm->cfg.app_timeout; - vcm->cfg.app_timeout = 2.0; - rv = vcl_wait_for_app_state_change (STATE_APP_ENABLED); - vcm->cfg.app_timeout = orig_app_timeout; - if (PREDICT_FALSE (rv)) - VDBG (0, "application detach timed out! returning %d (%s)", rv, - vppcom_retval_str (rv)); - vec_free (vcm->app_name); - vcl_worker_cleanup (vcl_worker_get_current (), 0 /* notify vpp */ ); - } - else - { - vcl_worker_cleanup (vcl_worker_get_current (), 1 /* notify vpp */ ); - } + 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_set_worker_index (~0); vcl_elog_stop (vcm); - vl_client_disconnect_from_vlib (); + + /* + * 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 @@ -1539,10 +1604,6 @@ vppcom_unformat_proto (uint8_t * proto, char *proto_str) *proto = VPPCOM_PROTO_UDP; else if (!strcmp (proto_str, "udp")) *proto = VPPCOM_PROTO_UDP; - else if (!strcmp (proto_str, "UDPC")) - *proto = VPPCOM_PROTO_UDPC; - else if (!strcmp (proto_str, "udpc")) - *proto = VPPCOM_PROTO_UDPC; else if (!strcmp (proto_str, "TLS")) *proto = VPPCOM_PROTO_TLS; else if (!strcmp (proto_str, "tls")) @@ -2002,13 +2063,21 @@ 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); } -static inline int -vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n, - u8 is_flush) +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) { - vcl_worker_t *wrk = vcl_worker_get_current (); int n_write, is_nonblocking; - vcl_session_t *s = 0; session_evt_type_t et; svm_msg_q_msg_t msg; svm_fifo_t *tx_fifo; @@ -2019,10 +2088,6 @@ vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n, if (PREDICT_FALSE (!buf || n == 0)) return VPPCOM_EINVAL; - s = vcl_session_get_w_handle (wrk, session_handle); - if (PREDICT_FALSE (!s)) - return VPPCOM_EBADFD; - if (PREDICT_FALSE (s->is_vep)) { VDBG (0, "ERROR: session %u [0x%llx]: cannot write to an epoll" @@ -2043,13 +2108,13 @@ vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n, is_nonblocking = VCL_SESS_ATTR_TEST (s->attr, VCL_SESS_ATTR_NONBLOCK); mq = wrk->app_event_queue; - if (svm_fifo_is_full_prod (tx_fifo)) + if (!vcl_fifo_is_writeable (tx_fifo, n, is_dgram)) { if (is_nonblocking) { return VPPCOM_EWOULDBLOCK; } - while (svm_fifo_is_full_prod (tx_fifo)) + 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)) @@ -2072,7 +2137,7 @@ vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n, if (is_flush && !is_ct) et = SESSION_IO_EVT_TX_FLUSH; - if (s->is_dgram) + 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); @@ -2095,15 +2160,29 @@ vppcom_session_write_inline (uint32_t session_handle, void *buf, size_t n, int vppcom_session_write (uint32_t session_handle, void *buf, size_t n) { - return vppcom_session_write_inline (session_handle, buf, n, - 0 /* is_flush */ ); + 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) { - return vppcom_session_write_inline (session_handle, buf, n, - 1 /* is_flush */ ); + 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) \ @@ -2141,7 +2220,7 @@ vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, case SESSION_IO_EVT_RX: sid = e->session_index; session = vcl_session_get (wrk, sid); - if (!session) + if (!session || !vcl_session_is_open (session)) break; vcl_fifo_rx_evt_valid_or_break (session); if (sid < n_bits && read_map) @@ -2153,7 +2232,7 @@ vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, case SESSION_IO_EVT_TX: sid = e->session_index; session = vcl_session_get (wrk, sid); - if (!session) + if (!session || !vcl_session_is_open (session)) break; if (sid < n_bits && write_map) { @@ -2225,6 +2304,9 @@ vcl_select_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, case SESSION_CTRL_EVT_APP_DEL_SEGMENT: vcl_session_app_del_segment_handler (wrk, e->data); break; + case SESSION_CTRL_EVT_APP_WRK_RPC: + vcl_worker_rpc_handler (wrk, e->data); + break; default: clib_warning ("unhandled: %u", e->event_type); break; @@ -2346,7 +2428,7 @@ vppcom_select (int n_bits, vcl_si_set * read_map, vcl_si_set * write_map, 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 rv, i; + int i; if (n_bits && read_map) { @@ -2380,13 +2462,12 @@ vppcom_select (int n_bits, vcl_si_set * read_map, vcl_si_set * write_map, clib_bitmap_foreach (sid, wrk->wr_bitmap, ({ if (!(session = vcl_session_get (wrk, sid))) { - if (except_map && sid < minbits) - clib_bitmap_set_no_check (except_map, sid, 1); - continue; + clib_bitmap_set_no_check ((uword*)write_map, sid, 1); + bits_set++; + continue; } - rv = svm_fifo_is_full_prod (session->tx_fifo); - if (!rv) + if (vcl_session_write_ready (session)) { clib_bitmap_set_no_check ((uword*)write_map, sid, 1); bits_set++; @@ -2402,13 +2483,12 @@ check_rd: clib_bitmap_foreach (sid, wrk->rd_bitmap, ({ if (!(session = vcl_session_get (wrk, sid))) { - if (except_map && sid < minbits) - clib_bitmap_set_no_check (except_map, sid, 1); - continue; + clib_bitmap_set_no_check ((uword*)read_map, sid, 1); + bits_set++; + continue; } - rv = vcl_session_read_ready (session); - if (rv) + if (vcl_session_read_ready (session)) { clib_bitmap_set_no_check ((uword*)read_map, sid, 1); bits_set++; @@ -2747,7 +2827,8 @@ vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, { case SESSION_IO_EVT_RX: sid = e->session_index; - if (!(session = vcl_session_get (wrk, sid))) + 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; @@ -2760,7 +2841,8 @@ vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, break; case SESSION_IO_EVT_TX: sid = e->session_index; - if (!(session = vcl_session_get (wrk, sid))) + session = vcl_session_get (wrk, sid); + if (vcl_session_is_closed (session)) break; session_events = session->vep.ev.events; if (!(EPOLLOUT & session_events)) @@ -2788,7 +2870,8 @@ vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, connected_msg = (session_connected_msg_t *) e->data; sid = vcl_session_connected_handler (wrk, connected_msg); /* Generate EPOLLOUT because there's no connected event */ - if (!(session = vcl_session_get (wrk, sid))) + session = vcl_session_get (wrk, sid); + if (vcl_session_is_closed (session)) break; session_events = session->vep.ev.events; if (!(EPOLLOUT & session_events)) @@ -2802,7 +2885,7 @@ vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, case SESSION_CTRL_EVT_DISCONNECTED: disconnected_msg = (session_disconnected_msg_t *) e->data; session = vcl_session_disconnected_handler (wrk, disconnected_msg); - if (!session) + if (vcl_session_is_closed (session)) break; session_events = session->vep.ev.events; add_event = 1; @@ -2811,7 +2894,8 @@ vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, break; case SESSION_CTRL_EVT_RESET: sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data); - if (!(session = vcl_session_get (wrk, sid))) + session = vcl_session_get (wrk, sid); + if (vcl_session_is_closed (session)) break; session_events = session->vep.ev.events; add_event = 1; @@ -2839,6 +2923,9 @@ vcl_epoll_wait_handle_mq_event (vcl_worker_t * wrk, session_event_t * e, case SESSION_CTRL_EVT_APP_DEL_SEGMENT: vcl_session_app_del_segment_handler (wrk, e->data); break; + case SESSION_CTRL_EVT_APP_WRK_RPC: + vcl_worker_rpc_handler (wrk, e->data); + break; default: VDBG (0, "unhandled: %u", e->event_type); break; @@ -2890,7 +2977,7 @@ vcl_epoll_wait_handle_mq (vcl_worker_t * wrk, svm_msg_q_t * mq, } } ASSERT (maxevents > *num_ev); - vcl_mq_dequeue_batch (wrk, mq, maxevents - *num_ev); + vcl_mq_dequeue_batch (wrk, mq, ~0); svm_msg_q_unlock (mq); handle_dequeued: @@ -2898,7 +2985,10 @@ handle_dequeued: { msg = vec_elt_at_index (wrk->mq_msg_vector, i); e = svm_msg_q_msg_data (mq, msg); - vcl_epoll_wait_handle_mq_event (wrk, e, events, num_ev); + 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); @@ -2928,7 +3018,7 @@ vppcom_epoll_wait_condvar (vcl_worker_t * wrk, struct epoll_event *events, continue; now = clib_time_now (&wrk->clib_time); - wait -= now - start; + wait -= (now - start) * 1e3; start = now; } while (wait > 0); @@ -3042,8 +3132,10 @@ vppcom_session_attr (uint32_t session_handle, uint32_t op, 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)); + *flags = + O_RDWR | + (VCL_SESS_ATTR_TEST (session->attr, VCL_SESS_ATTR_NONBLOCK) ? + O_NONBLOCK : 0); *buflen = sizeof (*flags); VDBG (2, "VPPCOM_ATTR_GET_FLAGS: sh %u, flags = 0x%08x, " "is_nonblocking = %u", session_handle, *flags, @@ -3560,6 +3652,11 @@ vppcom_session_attr (uint32_t session_handle, uint32_t op, *(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; @@ -3606,18 +3703,18 @@ 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) { - 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 (s->session_type != VPPCOM_PROTO_UDP || (s->flags & VCL_SESSION_F_CONNECTED)) return VPPCOM_EINVAL; @@ -3641,7 +3738,8 @@ vppcom_session_sendto (uint32_t session_handle, void *buffer, VDBG (2, "handling flags 0x%u (%d) not implemented yet.", flags, flags); } - return (vppcom_session_write_inline (session_handle, buffer, buflen, 1)); + return (vppcom_session_write_inline (wrk, s, buffer, buflen, 1, + s->is_dgram ? 1 : 0)); } int @@ -3797,6 +3895,12 @@ vppcom_worker_unregister (void) vcl_set_worker_index (~0); } +void +vppcom_worker_index_set (int index) +{ + vcl_set_worker_index (index); +} + int vppcom_worker_index (void) { @@ -3849,6 +3953,95 @@ vppcom_session_n_accepted (uint32_t session_handle) 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 *