* @brief Session and session manager
*/
+#include <vnet/plugin/plugin.h>
#include <vnet/session/session.h>
#include <vnet/session/application.h>
#include <vnet/dpo/load_balance.h>
evt = (session_event_t *) svm_msg_q_msg_data (mq, &msg);
evt->session_index = *(u32 *) data;
break;
- case SESSION_IO_EVT_BUILTIN_TX:
+ case SESSION_IO_EVT_TX_MAIN:
case SESSION_CTRL_EVT_CLOSE:
case SESSION_CTRL_EVT_RESET:
msg = svm_msg_q_alloc_msg_w_ring (mq, SESSION_MQ_IO_EVT_RING);
ho->connection_index, ho->app_index /* overloaded */);
}
else
- transport_cleanup_half_open (session_get_transport_proto (ho),
- ho->connection_index);
+ {
+ /* Cleanup half-open session lookup table if need be */
+ if (ho->session_state != SESSION_STATE_TRANSPORT_CLOSED)
+ {
+ transport_connection_t *tc;
+ tc = transport_get_half_open (session_get_transport_proto (ho),
+ ho->connection_index);
+ if (tc && !(tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP))
+ session_lookup_del_half_open (tc);
+ }
+ transport_cleanup_half_open (session_get_transport_proto (ho),
+ ho->connection_index);
+ }
session_free (ho);
}
{
app_worker_t *app_wrk;
- ASSERT (vlib_get_thread_index () <= 1);
- app_wrk = app_worker_get (ho->app_wrk_index);
- app_worker_del_half_open (app_wrk, ho);
+ ASSERT (vlib_get_thread_index () <= transport_cl_thread ());
+ app_wrk = app_worker_get_if_valid (ho->app_wrk_index);
+ if (app_wrk)
+ app_worker_del_half_open (app_wrk, ho);
session_free (ho);
}
void
session_half_open_delete_notify (transport_connection_t *tc)
{
+ session_t *ho = ho_session_get (tc->s_index);
+
+ /* Cleanup half-open lookup table if need be */
+ if (ho->session_state != SESSION_STATE_TRANSPORT_CLOSED)
+ {
+ if (!(tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP))
+ session_lookup_del_half_open (tc);
+ }
+
/* Notification from ctrl thread accepted without rpc */
if (tc->thread_index == transport_cl_thread ())
{
- session_half_open_free (ho_session_get (tc->s_index));
+ session_half_open_free (ho);
}
else
{
{
session_t *ho;
+ /* Support half-open migrations only for transports with no lookup */
+ ASSERT (tc->flags & TRANSPORT_CONNECTION_F_NO_LOOKUP);
+
ho = ho_session_get (tc->s_index);
ho->flags |= SESSION_F_IS_MIGRATING;
ho->connection_index = ~0;
app_worker_t *app_wrk;
u32 session_index;
u8 n_subscribers;
+ u32 thread_index;
session_index = s->session_index;
+ thread_index = s->thread_index;
n_subscribers = svm_fifo_n_subscribers (s->rx_fifo);
app_wrk = app_worker_get_if_valid (s->app_wrk_index);
if (PREDICT_FALSE (n_subscribers))
{
- s = session_get (session_index, vlib_get_thread_index ());
+ s = session_get (session_index, thread_index);
return session_notify_subscribers (app_wrk->app_index, s,
s->rx_fifo, SESSION_IO_EVT_RX);
}
session_lookup_del_half_open (tc);
ho = ho_session_get (tc->s_index);
+ session_set_state (ho, SESSION_STATE_TRANSPORT_CLOSED);
opaque = ho->opaque;
app_wrk = app_worker_get_if_valid (ho->app_wrk_index);
if (!app_wrk)
void
session_close (session_t * s)
{
- if (!s)
+ if (!s || (s->flags & SESSION_F_APP_CLOSED))
return;
+ /* Transports can close and delete their state independent of app closes
+ * and transport initiated state transitions can hide app closes. Instead
+ * of extending the state machine to support separate tracking of app and
+ * transport initiated closes, use a flag. */
+ s->flags |= SESSION_F_APP_CLOSED;
+
if (s->session_state >= SESSION_STATE_CLOSING)
{
/* Session will only be removed once both app and transport
f->segment_index);
}
+void
+session_get_original_dst (transport_endpoint_t *i2o_src,
+ transport_endpoint_t *i2o_dst,
+ transport_proto_t transport_proto, u32 *original_dst,
+ u16 *original_dst_port)
+{
+ session_main_t *smm = vnet_get_session_main ();
+ ip_protocol_t proto =
+ (transport_proto == TRANSPORT_PROTO_TCP ? IPPROTO_TCP : IPPROTO_UDP);
+ if (!smm->original_dst_lookup || !i2o_dst->is_ip4)
+ return;
+ smm->original_dst_lookup (&i2o_src->ip.ip4, i2o_src->port, &i2o_dst->ip.ip4,
+ i2o_dst->port, proto, original_dst,
+ original_dst_port);
+}
+
/* *INDENT-OFF* */
static session_fifo_rx_fn *session_tx_fns[TRANSPORT_TX_N_FNS] = {
session_tx_fifo_peek_and_snd,
static void
session_prepare_dma_args (vlib_dma_config_t *args)
{
+ args->max_batches = 16;
args->max_transfers = DMA_TRANS_SIZE;
args->max_transfer_size = 65536;
args->features = 0;
smm->no_adaptive = 1;
else if (unformat (input, "use-dma"))
smm->dma_enabled = 1;
+ else if (unformat (input, "nat44-original-dst-enable"))
+ {
+ smm->original_dst_lookup = vlib_get_plugin_symbol (
+ "nat_plugin.so", "nat44_original_dst_lookup");
+ }
/*
* Deprecated but maintained for compatibility
*/