vcl: add support for reconnect
Supported only when eventfd option is enabled.
Type: feature
Change-Id: Ic9d6e38604e978f7bc8e54d74fe9b8f3fc53622d
Signed-off-by: Filip Tehlar <ftehlar@cisco.com>
diff --git a/src/vcl/vcl_private.c b/src/vcl/vcl_private.c
index d12d2d3..b6ef815 100644
--- a/src/vcl/vcl_private.c
+++ b/src/vcl/vcl_private.c
@@ -38,6 +38,25 @@
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 @@
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 @@
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 @@
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,