return session;
}
+static int
+vppcom_session_disconnect (u32 session_handle)
+{
+ vcl_worker_t *wrk = vcl_worker_get_current ();
+ svm_msg_q_t *vpp_evt_q;
+ vcl_session_t *session, *listen_session;
+ vcl_session_state_t state;
+ u64 vpp_handle;
+
+ session = vcl_session_get_w_handle (wrk, session_handle);
+ if (!session)
+ return VPPCOM_EBADFD;
+
+ vpp_handle = session->vpp_handle;
+ state = session->session_state;
+
+ VDBG (1, "session %u [0x%llx] state 0x%x (%s)", session->session_index,
+ vpp_handle, state, vppcom_session_state_str (state));
+
+ if (PREDICT_FALSE (state == VCL_STATE_LISTEN))
+ {
+ VDBG (0, "ERROR: Cannot disconnect a listen socket!");
+ return VPPCOM_EBADFD;
+ }
+
+ if (state == VCL_STATE_VPP_CLOSING)
+ {
+ vpp_evt_q = vcl_session_vpp_evt_q (wrk, session);
+ vcl_send_session_disconnected_reply (vpp_evt_q, wrk->api_client_handle,
+ vpp_handle, 0);
+ VDBG (1, "session %u [0x%llx]: sending disconnect REPLY...",
+ session->session_index, vpp_handle);
+ }
+ else
+ {
+ /* Session doesn't have an event queue yet. Probably a non-blocking
+ * connect. Wait for the reply */
+ if (PREDICT_FALSE (!session->vpp_evt_q))
+ return VPPCOM_OK;
+
+ VDBG (1, "session %u [0x%llx]: sending disconnect...",
+ session->session_index, vpp_handle);
+ vcl_send_session_disconnect (wrk, session);
+ }
+
+ if (session->listener_index != VCL_INVALID_SESSION_INDEX)
+ {
+ listen_session = vcl_session_get (wrk, session->listener_index);
+ listen_session->n_accepted_sessions--;
+ }
+
+ return VPPCOM_OK;
+}
+
static void
vcl_session_cleanup_handler (vcl_worker_t * wrk, void *data)
{
{
/* 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 */
+ * Confirm close to make sure everything is cleaned up.
+ * Move to undetermined state to ensure that the session is not
+ * removed before both vpp and the app cleanup.
+ * - If the app closes first, the session is moved to CLOSED state
+ * and the session cleanup notification from vpp removes the
+ * session.
+ * - If vpp cleans up the session first, the session is moved to
+ * DETACHED state lower and subsequently the close from the app
+ * frees the session
+ */
if (session->session_state == VCL_STATE_VPP_CLOSING)
- vcl_session_cleanup (wrk, session, vcl_session_handle (session),
- 1 /* do_disconnect */ );
+ {
+ vppcom_session_disconnect (vcl_session_handle (session));
+ session->session_state = VCL_STATE_UPDATED;
+ }
+ else if (session->session_state == VCL_STATE_DISCONNECT)
+ {
+ vcl_send_session_reset_reply (vcl_session_vpp_evt_q (wrk, session),
+ wrk->api_client_handle,
+ session->vpp_handle, 0);
+ session->session_state = VCL_STATE_UPDATED;
+ }
return;
}
vcl_handle_mq_event (vcl_worker_t * wrk, session_event_t * e)
{
session_disconnected_msg_t *disconnected_msg;
+ session_connected_msg_t *connected_msg;
+ session_reset_msg_t *reset_msg;
+ session_event_t *ecpy;
vcl_session_t *s;
+ u32 sid;
switch (e->event_type)
{
break;
vec_add1 (wrk->unhandled_evts_vector, *e);
break;
+ case SESSION_CTRL_EVT_BOUND:
+ /* We can only wait for only one listen so not postponed */
+ vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
+ break;
case SESSION_CTRL_EVT_ACCEPTED:
- vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
+ s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
+ if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
+ {
+ vec_add2 (wrk->unhandled_evts_vector, ecpy, 1);
+ *ecpy = *e;
+ ecpy->postponed = 1;
+ ecpy->session_index = s->session_index;
+ }
break;
case SESSION_CTRL_EVT_CONNECTED:
- vcl_session_connected_handler (wrk,
- (session_connected_msg_t *) e->data);
+ connected_msg = (session_connected_msg_t *) e->data;
+ sid = vcl_session_connected_handler (wrk, connected_msg);
+ if (!(s = vcl_session_get (wrk, sid)))
+ break;
+ if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
+ {
+ vec_add2 (wrk->unhandled_evts_vector, ecpy, 1);
+ *ecpy = *e;
+ ecpy->postponed = 1;
+ ecpy->session_index = s->session_index;
+ }
break;
case SESSION_CTRL_EVT_DISCONNECTED:
disconnected_msg = (session_disconnected_msg_t *) e->data;
- s = vcl_session_disconnected_handler (wrk, disconnected_msg);
- if (!s)
+ if (!(s = vcl_session_get_w_vpp_handle (wrk, disconnected_msg->handle)))
+ break;
+ if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
+ {
+ vec_add1 (wrk->unhandled_evts_vector, *e);
+ break;
+ }
+ if (!(s = vcl_session_disconnected_handler (wrk, disconnected_msg)))
break;
VDBG (0, "disconnected session %u [0x%llx]", s->session_index,
s->vpp_handle);
break;
case SESSION_CTRL_EVT_RESET:
+ reset_msg = (session_reset_msg_t *) e->data;
+ if (!(s = vcl_session_get_w_vpp_handle (wrk, reset_msg->handle)))
+ break;
+ if (vcl_session_has_attr (s, VCL_SESS_ATTR_NONBLOCK))
+ {
+ vec_add1 (wrk->unhandled_evts_vector, *e);
+ break;
+ }
vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
break;
- case SESSION_CTRL_EVT_BOUND:
- vcl_session_bound_handler (wrk, (session_bound_msg_t *) e->data);
- break;
case SESSION_CTRL_EVT_UNLISTEN_REPLY:
vcl_session_unlisten_reply_handler (wrk, e->data);
break;
return VPPCOM_OK;
}
-static int
-vppcom_session_disconnect (u32 session_handle)
-{
- vcl_worker_t *wrk = vcl_worker_get_current ();
- svm_msg_q_t *vpp_evt_q;
- vcl_session_t *session, *listen_session;
- vcl_session_state_t state;
- u64 vpp_handle;
-
- session = vcl_session_get_w_handle (wrk, session_handle);
- if (!session)
- return VPPCOM_EBADFD;
-
- vpp_handle = session->vpp_handle;
- state = session->session_state;
-
- VDBG (1, "session %u [0x%llx] state 0x%x (%s)", session->session_index,
- vpp_handle, state, vppcom_session_state_str (state));
-
- if (PREDICT_FALSE (state == VCL_STATE_LISTEN))
- {
- VDBG (0, "ERROR: Cannot disconnect a listen socket!");
- return VPPCOM_EBADFD;
- }
-
- if (state == VCL_STATE_VPP_CLOSING)
- {
- vpp_evt_q = vcl_session_vpp_evt_q (wrk, session);
- vcl_send_session_disconnected_reply (vpp_evt_q, wrk->api_client_handle,
- vpp_handle, 0);
- VDBG (1, "session %u [0x%llx]: sending disconnect REPLY...",
- session->session_index, vpp_handle);
- }
- else
- {
- /* Session doesn't have an event queue yet. Probably a non-blocking
- * connect. Wait for the reply */
- if (PREDICT_FALSE (!session->vpp_evt_q))
- return VPPCOM_OK;
-
- VDBG (1, "session %u [0x%llx]: sending disconnect...",
- session->session_index, vpp_handle);
- vcl_send_session_disconnect (wrk, session);
- }
-
- if (session->listener_index != VCL_INVALID_SESSION_INDEX)
- {
- listen_session = vcl_session_get (wrk, session->listener_index);
- listen_session->n_accepted_sessions--;
- }
-
- return VPPCOM_OK;
-}
-
/**
* Handle app exit
*
s->vep.vep_sh, rv, vppcom_retval_str (rv));
next_sh = s->vep.next_sh;
}
- goto cleanup;
+ goto free_session;
}
if (s->flags & VCL_SESSION_F_IS_VEP_SESSION)
{
session_disconnected_msg_t *disconnected_msg;
session_connected_msg_t *connected_msg;
- vcl_session_t *session;
+ vcl_session_t *s;
u32 sid;
switch (e->event_type)
{
case SESSION_IO_EVT_RX:
sid = e->session_index;
- session = vcl_session_get (wrk, sid);
- if (!session || !vcl_session_is_open (session))
+ s = vcl_session_get (wrk, sid);
+ if (!s || !vcl_session_is_open (s))
break;
- vcl_fifo_rx_evt_valid_or_break (session);
+ vcl_fifo_rx_evt_valid_or_break (s);
if (sid < n_bits && read_map)
{
clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
break;
case SESSION_IO_EVT_TX:
sid = e->session_index;
- session = vcl_session_get (wrk, sid);
- if (!session || !vcl_session_is_open (session))
+ s = vcl_session_get (wrk, sid);
+ if (!s || !vcl_session_is_open (s))
break;
if (sid < n_bits && write_map)
{
}
break;
case SESSION_CTRL_EVT_ACCEPTED:
- session = vcl_session_accepted (wrk,
- (session_accepted_msg_t *) e->data);
- if (!session)
+ if (!e->postponed)
+ s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
+ else
+ s = vcl_session_get (wrk, e->session_index);
+ if (!s)
break;
- sid = session->session_index;
+ sid = s->session_index;
if (sid < n_bits && read_map)
{
clib_bitmap_set_no_check ((uword *) read_map, sid, 1);
}
break;
case SESSION_CTRL_EVT_CONNECTED:
- connected_msg = (session_connected_msg_t *) e->data;
- sid = vcl_session_connected_handler (wrk, connected_msg);
+ if (!e->postponed)
+ {
+ connected_msg = (session_connected_msg_t *) e->data;
+ sid = vcl_session_connected_handler (wrk, connected_msg);
+ }
+ else
+ sid = e->session_index;
if (sid == VCL_INVALID_SESSION_INDEX)
break;
if (sid < n_bits && write_map)
break;
case SESSION_CTRL_EVT_DISCONNECTED:
disconnected_msg = (session_disconnected_msg_t *) e->data;
- session = vcl_session_disconnected_handler (wrk, disconnected_msg);
- if (!session)
+ s = vcl_session_disconnected_handler (wrk, disconnected_msg);
+ if (!s)
break;
- sid = session->session_index;
+ sid = s->session_index;
if (sid < n_bits && except_map)
{
clib_bitmap_set_no_check ((uword *) except_map, sid, 1);
session_connected_msg_t *connected_msg;
u32 sid = ~0, session_events;
u64 session_evt_data = ~0;
- vcl_session_t *session;
+ vcl_session_t *s;
u8 add_event = 0;
switch (e->event_type)
{
case SESSION_IO_EVT_RX:
sid = e->session_index;
- session = vcl_session_get (wrk, sid);
- if (vcl_session_is_closed (session))
+ s = vcl_session_get (wrk, sid);
+ if (vcl_session_is_closed (s))
break;
- vcl_fifo_rx_evt_valid_or_break (session);
- session_events = session->vep.ev.events;
- if (!(EPOLLIN & session->vep.ev.events)
- || (session->flags & VCL_SESSION_F_HAS_RX_EVT))
+ vcl_fifo_rx_evt_valid_or_break (s);
+ session_events = s->vep.ev.events;
+ if (!(EPOLLIN & s->vep.ev.events)
+ || (s->flags & VCL_SESSION_F_HAS_RX_EVT))
break;
add_event = 1;
events[*num_ev].events |= EPOLLIN;
- session_evt_data = session->vep.ev.data.u64;
- session->flags |= VCL_SESSION_F_HAS_RX_EVT;
+ session_evt_data = s->vep.ev.data.u64;
+ s->flags |= VCL_SESSION_F_HAS_RX_EVT;
break;
case SESSION_IO_EVT_TX:
sid = e->session_index;
- session = vcl_session_get (wrk, sid);
- if (vcl_session_is_closed (session))
+ s = vcl_session_get (wrk, sid);
+ if (vcl_session_is_closed (s))
break;
- session_events = session->vep.ev.events;
+ session_events = s->vep.ev.events;
if (!(EPOLLOUT & session_events))
break;
add_event = 1;
events[*num_ev].events |= EPOLLOUT;
- session_evt_data = session->vep.ev.data.u64;
- svm_fifo_reset_has_deq_ntf (vcl_session_is_ct (session) ?
- session->ct_tx_fifo : session->tx_fifo);
+ session_evt_data = s->vep.ev.data.u64;
+ svm_fifo_reset_has_deq_ntf (vcl_session_is_ct (s) ?
+ s->ct_tx_fifo : s->tx_fifo);
break;
case SESSION_CTRL_EVT_ACCEPTED:
- session = vcl_session_accepted (wrk,
- (session_accepted_msg_t *) e->data);
- if (!session)
+ if (!e->postponed)
+ s = vcl_session_accepted (wrk, (session_accepted_msg_t *) e->data);
+ else
+ s = vcl_session_get (wrk, e->session_index);
+ if (!s)
break;
-
- session_events = session->vep.ev.events;
+ session_events = s->vep.ev.events;
+ sid = s->session_index;
if (!(EPOLLIN & session_events))
break;
-
add_event = 1;
events[*num_ev].events |= EPOLLIN;
- session_evt_data = session->vep.ev.data.u64;
+ session_evt_data = s->vep.ev.data.u64;
break;
case SESSION_CTRL_EVT_CONNECTED:
- connected_msg = (session_connected_msg_t *) e->data;
- sid = vcl_session_connected_handler (wrk, connected_msg);
- /* Generate EPOLLOUT because there's no connected event */
- session = vcl_session_get (wrk, sid);
- if (vcl_session_is_closed (session))
+ if (!e->postponed)
+ {
+ connected_msg = (session_connected_msg_t *) e->data;
+ sid = vcl_session_connected_handler (wrk, connected_msg);
+ }
+ else
+ sid = e->session_index;
+ s = vcl_session_get (wrk, sid);
+ if (vcl_session_is_closed (s))
break;
- session_events = session->vep.ev.events;
+ session_events = s->vep.ev.events;
+ /* Generate EPOLLOUT because there's no connected event */
if (!(EPOLLOUT & session_events))
break;
add_event = 1;
events[*num_ev].events |= EPOLLOUT;
- session_evt_data = session->vep.ev.data.u64;
- if (session->session_state == VCL_STATE_DETACHED)
+ session_evt_data = s->vep.ev.data.u64;
+ if (s->session_state == VCL_STATE_DETACHED)
events[*num_ev].events |= EPOLLHUP;
break;
case SESSION_CTRL_EVT_DISCONNECTED:
disconnected_msg = (session_disconnected_msg_t *) e->data;
- session = vcl_session_disconnected_handler (wrk, disconnected_msg);
- if (vcl_session_is_closed (session))
+ s = vcl_session_disconnected_handler (wrk, disconnected_msg);
+ if (vcl_session_is_closed (s))
break;
- session_events = session->vep.ev.events;
+ sid = s->session_index;
+ session_events = s->vep.ev.events;
add_event = 1;
events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
- session_evt_data = session->vep.ev.data.u64;
+ session_evt_data = s->vep.ev.data.u64;
break;
case SESSION_CTRL_EVT_RESET:
sid = vcl_session_reset_handler (wrk, (session_reset_msg_t *) e->data);
- session = vcl_session_get (wrk, sid);
- if (vcl_session_is_closed (session))
+ s = vcl_session_get (wrk, sid);
+ if (vcl_session_is_closed (s))
break;
- session_events = session->vep.ev.events;
+ session_events = s->vep.ev.events;
add_event = 1;
events[*num_ev].events |= EPOLLHUP | EPOLLRDHUP;
- session_evt_data = session->vep.ev.data.u64;
+ session_evt_data = s->vep.ev.data.u64;
break;
case SESSION_CTRL_EVT_UNLISTEN_REPLY:
vcl_session_unlisten_reply_handler (wrk, e->data);
events[*num_ev].data.u64 = session_evt_data;
if (EPOLLONESHOT & session_events)
{
- session = vcl_session_get (wrk, sid);
- session->vep.ev.events = 0;
+ s = vcl_session_get (wrk, sid);
+ s->vep.ev.events = 0;
}
*num_ev += 1;
}
if (ep)
{
- if (s->session_type != VPPCOM_PROTO_UDP
- || (s->flags & VCL_SESSION_F_CONNECTED))
+ if (!vcl_session_is_cl (s))
return VPPCOM_EINVAL;
/* Session not connected/bound in vpp. Create it by 'connecting' it */
if (PREDICT_FALSE (s->session_state == VCL_STATE_CLOSED))
{
+ u32 session_index = s->session_index;
+ f64 timeout = vcm->cfg.session_timeout;
+ int rv;
+
vcl_send_session_connect (wrk, s);
+ rv = vppcom_wait_for_session_state_change (session_index,
+ VCL_STATE_READY,
+ timeout);
+ if (rv < 0)
+ return rv;
+ s = vcl_session_get (wrk, session_index);
}
- else
- {
- s->transport.is_ip4 = ep->is_ip4;
- s->transport.rmt_port = ep->port;
- vcl_ip_copy_from_ep (&s->transport.rmt_ip, ep);
- }
+
+ s->transport.is_ip4 = ep->is_ip4;
+ s->transport.rmt_port = ep->port;
+ vcl_ip_copy_from_ep (&s->transport.rmt_ip, ep);
}
if (flags)
Code Review / vpp.git / blobdiff