X-Git-Url: https://gerrit.fd.io/r/gitweb?a=blobdiff_plain;f=src%2Fvnet%2Fsctp%2Fsctp.c;h=ffa86343b4731c0f182b9cbf6cb5912d3ad08c79;hb=d055475773b5741276edb818fb27478f532487b4;hp=b1186a62052c1b814fae804df415376db1ebfc1b;hpb=3c6a976325f32f880b7e53f50ebe86fa0e8476c9;p=vpp.git

diff --git a/src/vnet/sctp/sctp.c b/src/vnet/sctp/sctp.c
index b1186a62052..ffa86343b47 100644
--- a/src/vnet/sctp/sctp.c
+++ b/src/vnet/sctp/sctp.c
@@ -27,11 +27,11 @@ sctp_connection_bind (u32 session_index, transport_endpoint_t * tep)
   pool_get (tm->listener_pool, listener);
   memset (listener, 0, sizeof (*listener));
 
-  listener->sub_conn[MAIN_SCTP_SUB_CONN_IDX].subconn_idx =
-    MAIN_SCTP_SUB_CONN_IDX;
-  listener->sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_c_index =
+  listener->sub_conn[SCTP_PRIMARY_PATH_IDX].subconn_idx =
+    SCTP_PRIMARY_PATH_IDX;
+  listener->sub_conn[SCTP_PRIMARY_PATH_IDX].c_c_index =
     listener - tm->listener_pool;
-  listener->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection.lcl_port = tep->port;
+  listener->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.lcl_port = tep->port;
 
   /* If we are provided a sw_if_index, bind using one of its IPs */
   if (ip_is_zero (&tep->ip, 1) && tep->sw_if_index != ENDPOINT_INVALID_INDEX)
@@ -40,22 +40,26 @@ sctp_connection_bind (u32 session_index, transport_endpoint_t * tep)
 						 tep->is_ip4)))
 	ip_set (&tep->ip, iface_ip, tep->is_ip4);
     }
-  ip_copy (&listener->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection.lcl_ip,
+  ip_copy (&listener->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.lcl_ip,
 	   &tep->ip, tep->is_ip4);
 
-  listener->sub_conn[MAIN_SCTP_SUB_CONN_IDX].PMTU =
-    vnet_sw_interface_get_mtu (vnet_get_main (), tep->sw_if_index, VLIB_TX);
-  listener->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection.is_ip4 = tep->is_ip4;
-  listener->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection.proto =
+  u32 mtu = tep->is_ip4 ? vnet_sw_interface_get_mtu (vnet_get_main (),
+						     tep->sw_if_index,
+						     VNET_MTU_IP4) :
+    vnet_sw_interface_get_mtu (vnet_get_main (), tep->sw_if_index,
+			       VNET_MTU_IP6);
+  listener->sub_conn[SCTP_PRIMARY_PATH_IDX].PMTU = mtu;
+  listener->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.is_ip4 = tep->is_ip4;
+  listener->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.proto =
     TRANSPORT_PROTO_SCTP;
-  listener->sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_s_index = session_index;
-  listener->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection.fib_index =
+  listener->sub_conn[SCTP_PRIMARY_PATH_IDX].c_s_index = session_index;
+  listener->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.fib_index =
     tep->fib_index;
   listener->state = SCTP_STATE_CLOSED;
 
   sctp_connection_timers_init (listener);
 
-  return listener->sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_c_index;
+  return listener->sub_conn[SCTP_PRIMARY_PATH_IDX].c_c_index;
 }
 
 u32
@@ -275,7 +279,7 @@ sctp_sub_connection_add (u8 thread_index)
   ASSERT (subconn_idx < MAX_SCTP_CONNECTIONS);
 
   sctp_conn->sub_conn[subconn_idx].connection.c_index =
-    sctp_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection.c_index;
+    sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.c_index;
   sctp_conn->sub_conn[subconn_idx].connection.thread_index = thread_index;
   sctp_conn->sub_conn[subconn_idx].subconn_idx = subconn_idx;
 
@@ -305,6 +309,40 @@ sctp_sub_connection_add_ip4 (vlib_main_t * vm,
   return SCTP_ERROR_NONE;
 }
 
+u8
+sctp_sub_connection_del_ip4 (ip4_address_t * lcl_addr,
+			     ip4_address_t * rmt_addr)
+{
+  sctp_main_t *sctp_main = vnet_get_sctp_main ();
+
+  u32 thread_idx = vlib_get_thread_index ();
+  u8 i;
+
+  ASSERT (thread_idx == 0);
+
+  for (i = 0; i < MAX_SCTP_CONNECTIONS; i++)
+    {
+      sctp_connection_t *sctp_conn = sctp_main->connections[thread_idx];
+      sctp_sub_connection_t *sub_conn =
+	&sctp_main->connections[thread_idx]->sub_conn[i];
+      ip46_address_t *lcl_ip =
+	&sctp_main->connections[thread_idx]->sub_conn[i].connection.lcl_ip;
+      ip46_address_t *rmt_ip =
+	&sctp_main->connections[thread_idx]->sub_conn[i].connection.rmt_ip;
+
+      if (!sub_conn->connection.is_ip4)
+	continue;
+      if (lcl_ip->ip4.as_u32 == lcl_addr->as_u32 &&
+	  rmt_ip->ip4.as_u32 == rmt_addr->as_u32)
+	{
+	  sub_conn->state = SCTP_SUBCONN_STATE_DOWN;
+	  sctp_conn->forming_association_changed = 1;
+	  break;
+	}
+    }
+  return SCTP_ERROR_NONE;
+}
+
 u8
 sctp_sub_connection_add_ip6 (vlib_main_t * vm,
 			     ip6_address_t * lcl_addr,
@@ -328,6 +366,57 @@ sctp_sub_connection_add_ip6 (vlib_main_t * vm,
   return SCTP_ERROR_NONE;
 }
 
+u8
+sctp_sub_connection_del_ip6 (ip6_address_t * lcl_addr,
+			     ip6_address_t * rmt_addr)
+{
+  sctp_main_t *sctp_main = vnet_get_sctp_main ();
+
+  u32 thread_idx = vlib_get_thread_index ();
+  u8 i;
+
+  ASSERT (thread_idx == 0);
+
+  for (i = 0; i < MAX_SCTP_CONNECTIONS; i++)
+    {
+      sctp_connection_t *sctp_conn = sctp_main->connections[thread_idx];
+      sctp_sub_connection_t *sub_conn =
+	&sctp_main->connections[thread_idx]->sub_conn[i];
+      ip46_address_t *lcl_ip =
+	&sctp_main->connections[thread_idx]->sub_conn[i].connection.lcl_ip;
+      ip46_address_t *rmt_ip =
+	&sctp_main->connections[thread_idx]->sub_conn[i].connection.rmt_ip;
+
+      if (!sub_conn->connection.is_ip4)
+	continue;
+      if ((lcl_ip->ip6.as_u64[0] == lcl_addr->as_u64[0]
+	   && lcl_ip->ip6.as_u64[1] == lcl_addr->as_u64[1])
+	  && (rmt_ip->ip6.as_u64[0] == rmt_addr->as_u64[0]
+	      && rmt_ip->ip6.as_u64[1] == rmt_addr->as_u64[1]))
+	{
+	  sub_conn->state = SCTP_SUBCONN_STATE_DOWN;
+	  sctp_conn->forming_association_changed = 1;
+	  break;
+	}
+    }
+  return SCTP_ERROR_NONE;
+}
+
+u8
+sctp_configure (sctp_user_configuration_t config)
+{
+  sctp_main_t *sctp_main = vnet_get_sctp_main ();
+
+  u32 thread_idx = vlib_get_thread_index ();
+
+  sctp_main->connections[thread_idx]->conn_config.never_delay_sack =
+    config.never_delay_sack;
+  sctp_main->connections[thread_idx]->conn_config.never_bundle =
+    config.never_bundle;
+
+  return 0;
+}
+
 sctp_connection_t *
 sctp_connection_new (u8 thread_index)
 {
@@ -336,11 +425,11 @@ sctp_connection_new (u8 thread_index)
 
   pool_get (sctp_main->connections[thread_index], sctp_conn);
   memset (sctp_conn, 0, sizeof (*sctp_conn));
-  sctp_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].subconn_idx =
-    MAIN_SCTP_SUB_CONN_IDX;
-  sctp_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_c_index =
+  sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].subconn_idx =
+    SCTP_PRIMARY_PATH_IDX;
+  sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_c_index =
     sctp_conn - sctp_main->connections[thread_index];
-  sctp_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_thread_index = thread_index;
+  sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_thread_index = thread_index;
   sctp_conn->local_tag = 0;
 
   return sctp_conn;
@@ -354,10 +443,10 @@ sctp_half_open_connection_new (u8 thread_index)
   ASSERT (vlib_get_thread_index () == 0);
   pool_get (tm->half_open_connections, sctp_conn);
   memset (sctp_conn, 0, sizeof (*sctp_conn));
-  sctp_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].c_c_index =
+  sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].c_c_index =
     sctp_conn - tm->half_open_connections;
-  sctp_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].subconn_idx =
-    MAIN_SCTP_SUB_CONN_IDX;
+  sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].subconn_idx =
+    SCTP_PRIMARY_PATH_IDX;
   return sctp_conn;
 }
 
@@ -371,7 +460,7 @@ sctp_connection_open (transport_endpoint_t * rmt)
   uword thread_id;
   int rv;
 
-  u8 idx = MAIN_SCTP_SUB_CONN_IDX;
+  u8 idx = SCTP_PRIMARY_PATH_IDX;
 
   /*
    * Allocate local endpoint
@@ -395,8 +484,12 @@ sctp_connection_open (transport_endpoint_t * rmt)
 
   clib_spinlock_lock_if_init (&tm->half_open_lock);
   sctp_conn = sctp_half_open_connection_new (thread_id);
-  sctp_conn->sub_conn[idx].PMTU =
-    vnet_sw_interface_get_mtu (vnet_get_main (), rmt->sw_if_index, VLIB_TX);
+  u32 mtu = rmt->is_ip4 ? vnet_sw_interface_get_mtu (vnet_get_main (),
+						     rmt->sw_if_index,
+						     VNET_MTU_IP4) :
+    vnet_sw_interface_get_mtu (vnet_get_main (), rmt->sw_if_index,
+			       VNET_MTU_IP6);
+  sctp_conn->sub_conn[idx].PMTU = mtu;
 
   transport_connection_t *trans_conn = &sctp_conn->sub_conn[idx].connection;
   ip_copy (&trans_conn->rmt_ip, &rmt->ip, rmt->is_ip4);
@@ -437,7 +530,7 @@ sctp_connection_cleanup (sctp_connection_t * sctp_conn)
 				sctp_conn->sub_conn[i].connection.lcl_port);
 
   int thread_index =
-    sctp_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection.thread_index;
+    sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.thread_index;
 
   /* Make sure all timers are cleared */
   sctp_connection_timers_reset (sctp_conn);
@@ -480,7 +573,7 @@ void
 sctp_connection_close (sctp_connection_t * sctp_conn)
 {
   SCTP_DBG ("Closing connection %u...",
-	    sctp_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection.c_index);
+	    sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].connection.c_index);
 
   sctp_conn->state = SCTP_STATE_SHUTDOWN_PENDING;
 
@@ -530,14 +623,30 @@ sctp_session_send_mss (transport_connection_t * trans_conn)
   update_cwnd (sctp_conn);
   update_smallest_pmtu_idx (sctp_conn);
 
-  return sctp_conn->sub_conn[sctp_conn->smallest_PMTU_idx].cwnd;
+  u8 idx = sctp_data_subconn_select (sctp_conn);
+
+  return sctp_conn->sub_conn[idx].cwnd;
 }
 
 u16
 sctp_snd_space (sctp_connection_t * sctp_conn)
 {
+  /* RFC 4096 Section 6.1; point (A) */
+  if (sctp_conn->peer_rwnd == 0)
+    return 0;
+
+  u8 idx = sctp_data_subconn_select (sctp_conn);
+
+  u32 available_wnd =
+    clib_min (sctp_conn->peer_rwnd, sctp_conn->sub_conn[idx].cwnd);
+  int flight_size = (int) (sctp_conn->next_tsn - sctp_conn->last_unacked_tsn);
+
+  if (available_wnd <= flight_size)
+    return 0;
+
   /* Finally, let's subtract the DATA chunk headers overhead */
-  return sctp_conn->sub_conn[sctp_conn->smallest_PMTU_idx].cwnd -
+  return available_wnd -
+    flight_size -
     sizeof (sctp_payload_data_chunk_t) - sizeof (sctp_full_hdr_t);
 }
 
@@ -560,7 +669,7 @@ sctp_session_get_transport (u32 conn_index, u32 thread_index)
     sctp_connection_get (conn_index, thread_index);
 
   if (PREDICT_TRUE (sctp_conn != NULL))
-    return &sctp_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection;
+    return &sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].connection;
 
   return NULL;
 }
@@ -571,7 +680,7 @@ sctp_session_get_listener (u32 listener_index)
   sctp_main_t *tm = vnet_get_sctp_main ();
   sctp_connection_t *sctp_conn;
   sctp_conn = pool_elt_at_index (tm->listener_pool, listener_index);
-  return &sctp_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection;
+  return &sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].connection;
 }
 
 u8 *
@@ -610,19 +719,6 @@ sctp_expired_timers_cb (u32 conn_index, u32 timer_id)
 
   SCTP_DBG ("%s expired", sctp_timer_to_string (timer_id));
 
-  switch (timer_id)
-    {
-    case SCTP_TIMER_T1_INIT:
-    case SCTP_TIMER_T1_COOKIE:
-    case SCTP_TIMER_T2_SHUTDOWN:
-    case SCTP_TIMER_T3_RXTX:
-      sctp_timer_reset (sctp_conn, conn_index, timer_id);
-      break;
-    case SCTP_TIMER_T4_HEARTBEAT:
-      sctp_timer_reset (sctp_conn, conn_index, timer_id);
-      goto heartbeat;
-    }
-
   if (sctp_conn->sub_conn[conn_index].unacknowledged_hb >
       SCTP_PATH_MAX_RETRANS)
     {
@@ -646,12 +742,34 @@ sctp_expired_timers_cb (u32 conn_index, u32 timer_id)
 	  /* Start cleanup. App wasn't notified yet so use delete notify as
 	   * opposed to delete to cleanup session layer state. */
 	  stream_session_delete_notify (&sctp_conn->sub_conn
-					[MAIN_SCTP_SUB_CONN_IDX].connection);
+					[SCTP_PRIMARY_PATH_IDX].connection);
 
 	  sctp_connection_timers_reset (sctp_conn);
 
 	  sctp_connection_cleanup (sctp_conn);
 	}
+      return;
+    }
+
+  switch (timer_id)
+    {
+    case SCTP_TIMER_T1_INIT:
+      sctp_send_init (sctp_conn);
+      break;
+    case SCTP_TIMER_T1_COOKIE:
+      sctp_send_cookie_echo (sctp_conn);
+      break;
+    case SCTP_TIMER_T2_SHUTDOWN:
+      sctp_send_shutdown (sctp_conn);
+      break;
+    case SCTP_TIMER_T3_RXTX:
+      sctp_timer_reset (sctp_conn, conn_index, timer_id);
+      sctp_conn->flags |= SCTP_CONN_RECOVERY;
+      sctp_data_retransmit (sctp_conn);
+      break;
+    case SCTP_TIMER_T4_HEARTBEAT:
+      sctp_timer_reset (sctp_conn, conn_index, timer_id);
+      goto heartbeat;
     }
   return;
 
@@ -797,7 +915,7 @@ transport_connection_t *
 sctp_half_open_session_get_transport (u32 conn_index)
 {
   sctp_connection_t *sctp_conn = sctp_half_open_connection_get (conn_index);
-  return &sctp_conn->sub_conn[MAIN_SCTP_SUB_CONN_IDX].connection;
+  return &sctp_conn->sub_conn[SCTP_PRIMARY_PATH_IDX].connection;
 }
 
 u8 *
@@ -835,6 +953,8 @@ const static transport_proto_vft_t sctp_proto = {
   .format_connection = format_sctp_session,
   .format_listener = format_sctp_listener_session,
   .format_half_open = format_sctp_half_open,
+  .tx_type = TRANSPORT_TX_DEQUEUE,
+  .service_type = TRANSPORT_SERVICE_VC,
 };
 
 /* *INDENT ON* */