diff options
Diffstat (limited to 'src/vcl')
| -rw-r--r-- | src/vcl/vcl_private.c | 70 | ||||
| -rw-r--r-- | src/vcl/vcl_private.h | 2 | ||||
| -rw-r--r-- | src/vcl/vcl_sapi.c | 4 | ||||
| -rw-r--r-- | src/vcl/vppcom.c | 52 |
4 files changed, 127 insertions, 1 deletions
diff --git a/src/vcl/vcl_private.c b/src/vcl/vcl_private.c index d12d2d31a8f..b6ef815b53d 100644 --- a/src/vcl/vcl_private.c +++ b/src/vcl/vcl_private.c @@ -38,6 +38,25 @@ vcl_mq_evt_conn_get (vcl_worker_t * wrk, u32 mq_conn_idx) return pool_elt_at_index (wrk->mq_evt_conns, mq_conn_idx); } +/* Add unix socket to epoll. + * Used only to get a notification on socket close + * We can't use eventfd because we don't get notifications on that fds + */ +static int +vcl_mq_epoll_add_api_sock (vcl_worker_t *wrk) +{ + clib_socket_t *cs = &wrk->app_api_sock; + struct epoll_event e = { 0 }; + int rv; + + e.data.u32 = ~0; + rv = epoll_ctl (wrk->mqs_epfd, EPOLL_CTL_ADD, cs->fd, &e); + if (rv != EEXIST && rv < 0) + return -1; + + return 0; +} + int vcl_mq_epoll_add_evfd (vcl_worker_t * wrk, svm_msg_q_t * mq) { @@ -64,6 +83,12 @@ vcl_mq_epoll_add_evfd (vcl_worker_t * wrk, svm_msg_q_t * mq) return -1; } + if (vcl_mq_epoll_add_api_sock (wrk)) + { + VDBG (0, "failed to add mq socket to mq epoll fd"); + return -1; + } + return mqc_index; } @@ -158,6 +183,33 @@ vcl_worker_cleanup_cb (void *arg) VDBG (0, "cleaned up worker %u", wrk_index); } +void +vcl_worker_detach_sessions (vcl_worker_t *wrk) +{ + session_event_t *e; + vcl_session_t *s; + + close (wrk->app_api_sock.fd); + pool_foreach (s, wrk->sessions) + { + if (s->session_state == VCL_STATE_LISTEN) + { + s->session_state = VCL_STATE_LISTEN_NO_MQ; + continue; + } + if (s->flags & VCL_SESSION_F_IS_VEP) + continue; + + s->session_state = VCL_STATE_DETACHED; + vec_add2 (wrk->unhandled_evts_vector, e, 1); + e->event_type = SESSION_CTRL_EVT_DISCONNECTED; + e->session_index = s->session_index; + e->postponed = 1; + } + + vcl_segment_detach_all (); +} + vcl_worker_t * vcl_worker_alloc_and_init () { @@ -410,6 +462,24 @@ vcl_segment_detach (u64 segment_handle) VDBG (0, "detached segment %u handle %u", segment_index, segment_handle); } +void +vcl_segment_detach_all () +{ + u64 *segs = 0, *seg, key; + u32 val; + + clib_rwlock_reader_lock (&vcm->segment_table_lock); + + hash_foreach (key, val, vcm->segment_table, ({ vec_add1 (segs, key); })); + + clib_rwlock_reader_unlock (&vcm->segment_table_lock); + + vec_foreach (seg, segs) + vcl_segment_detach (seg[0]); + + vec_free (segs); +} + int vcl_segment_attach_session (uword segment_handle, uword rxf_offset, uword txf_offset, uword mq_offset, u32 mq_index, diff --git a/src/vcl/vcl_private.h b/src/vcl/vcl_private.h index f163de20125..e4f1c149b2d 100644 --- a/src/vcl/vcl_private.h +++ b/src/vcl/vcl_private.h @@ -716,6 +716,7 @@ int vcl_send_worker_rpc (u32 dst_wrk_index, void *data, u32 data_len); int vcl_segment_attach (u64 segment_handle, char *name, ssvm_segment_type_t type, int fd); void vcl_segment_detach (u64 segment_handle); +void vcl_segment_detach_all (); void vcl_send_session_unlisten (vcl_worker_t * wrk, vcl_session_t * s); int vcl_segment_attach_session (uword segment_handle, uword rxf_offset, @@ -729,6 +730,7 @@ svm_fifo_chunk_t *vcl_segment_alloc_chunk (uword segment_handle, uword *offset); int vcl_session_share_fifos (vcl_session_t *s, svm_fifo_t *rxf, svm_fifo_t *txf); +void vcl_worker_detach_sessions (vcl_worker_t *wrk); /* * VCL Binary API diff --git a/src/vcl/vcl_sapi.c b/src/vcl/vcl_sapi.c index 981257ede8d..870a634db8c 100644 --- a/src/vcl/vcl_sapi.c +++ b/src/vcl/vcl_sapi.c @@ -30,7 +30,9 @@ vcl_api_connect_app_socket (vcl_worker_t * wrk) if ((err = clib_socket_init (cs))) { - clib_error_report (err); + /* don't report the error to avoid flood of error messages during + * reconnect */ + clib_error_free (err); rv = -1; goto done; } diff --git a/src/vcl/vppcom.c b/src/vcl/vppcom.c index 4a6c46b3f3b..0e81749224e 100644 --- a/src/vcl/vppcom.c +++ b/src/vcl/vppcom.c @@ -1257,6 +1257,33 @@ vcl_api_attach (void) } static void +vcl_api_retry_attach (vcl_worker_t *wrk) +{ + vcl_session_t *s; + + if (vcl_api_attach ()) + return; + + /* Treat listeners as configuration that needs to be re-added to vpp */ + pool_foreach (s, wrk->sessions) + { + if (s->flags & VCL_SESSION_F_IS_VEP) + continue; + if (s->session_state == VCL_STATE_LISTEN_NO_MQ) + vppcom_session_listen (vcl_session_handle (s), 10); + else + VDBG (0, "internal error: unexpected state %d", s->session_state); + } +} + +static void +vcl_api_handle_disconnect (vcl_worker_t *wrk) +{ + wrk->api_client_handle = ~0; + vcl_worker_detach_sessions (wrk); +} + +static void vcl_api_detach (vcl_worker_t * wrk) { vcl_send_app_detach (wrk); @@ -2468,11 +2495,23 @@ vppcom_select_eventfd (vcl_worker_t * wrk, int n_bits, int n_mq_evts, i; u64 buf; + if (PREDICT_FALSE (wrk->api_client_handle == ~0)) + { + vcl_api_retry_attach (wrk); + return 0; + } + vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns)); n_mq_evts = epoll_wait (wrk->mqs_epfd, wrk->mq_events, vec_len (wrk->mq_events), time_to_wait); for (i = 0; i < n_mq_evts; i++) { + if (PREDICT_FALSE (wrk->mq_events[i].data.u32 == ~0)) + { + vcl_api_handle_disconnect (wrk); + continue; + } + mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32); n_read = read (mqc->mq_fd, &buf, sizeof (buf)); vcl_select_handle_mq (wrk, mqc->mq, n_bits, read_map, write_map, @@ -3189,6 +3228,12 @@ vppcom_epoll_wait_eventfd (vcl_worker_t *wrk, struct epoll_event *events, double end = -1; u64 buf; + if (PREDICT_FALSE (wrk->api_client_handle == ~0)) + { + vcl_api_retry_attach (wrk); + return n_evts; + } + vec_validate (wrk->mq_events, pool_elts (wrk->mq_evt_conns)); if (!n_evts) { @@ -3208,6 +3253,13 @@ vppcom_epoll_wait_eventfd (vcl_worker_t *wrk, struct epoll_event *events, for (i = 0; i < n_mq_evts; i++) { + if (PREDICT_FALSE (wrk->mq_events[i].data.u32 == ~0)) + { + /* api socket was closed */ + vcl_api_handle_disconnect (wrk); + continue; + } + mqc = vcl_mq_evt_conn_get (wrk, wrk->mq_events[i].data.u32); n_read = read (mqc->mq_fd, &buf, sizeof (buf)); vcl_epoll_wait_handle_mq (wrk, mqc->mq, events, maxevents, 0, |