bond: Add bonding driver and LACP protocol

[vpp.git] / src / plugins / lacp / selection.c

diff --git a/src/plugins/lacp/selection.c b/src/plugins/lacp/selection.c
new file mode 100644 (file)
index 0000000..898b6a9
--- /dev/null
+++ b/src/plugins/lacp/selection.c
@@ -0,0 +1,92 @@
+/*
+ * Copyright (c) 2017 Cisco and/or its affiliates.
+ * Licensed under the Apache License, Version 2.0 (the "License");
+ * you may not use this file except in compliance with the License.
+ * You may obtain a copy of the License at:
+ *
+ *     http://www.apache.org/licenses/LICENSE-2.0
+ *
+ * Unless required by applicable law or agreed to in writing, software
+ * distributed under the License is distributed on an "AS IS" BASIS,
+ * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+ * See the License for the specific language governing permissions and
+ * limitations under the License.
+ */
+
+#include <stdint.h>
+#include <vlib/vlib.h>
+#include <vlib/unix/unix.h>
+#include <vnet/bonding/node.h>
+#include <lacp/node.h>
+
+static void
+lacp_set_port_selected (vlib_main_t * vm, slave_if_t * sif)
+{
+  /* Handle loopback port */
+  if (!memcmp (sif->partner.system, sif->actor.system, 6) &&
+      (sif->partner.key == sif->actor.key))
+    {
+      sif->loopback_port = 1;
+      sif->actor.state &= ~LACP_STATE_AGGREGATION;
+    }
+  sif->selected = LACP_PORT_SELECTED;
+
+  switch (sif->mux_state)
+    {
+    case LACP_MUX_STATE_DETACHED:
+      break;
+    case LACP_MUX_STATE_WAITING:
+      if (!sif->ready)
+       return;
+      break;
+    case LACP_MUX_STATE_ATTACHED:
+      if (!(sif->partner.state & LACP_STATE_SYNCHRONIZATION))
+       return;
+      break;
+    case LACP_MUX_STATE_COLLECTING_DISTRIBUTING:
+      break;
+    default:
+      break;
+    }
+  lacp_machine_dispatch (&lacp_mux_machine, vm, sif, LACP_MUX_EVENT_SELECTED,
+                        &sif->mux_state);
+}
+
+void
+lacp_selection_logic (vlib_main_t * vm, slave_if_t * sif)
+{
+  slave_if_t *sif2;
+  bond_if_t *bif;
+  u32 *sw_if_index;
+
+  bif = bond_get_master_by_dev_instance (sif->bif_dev_instance);
+  vec_foreach (sw_if_index, bif->slaves)
+  {
+    sif2 = bond_get_slave_by_sw_if_index (*sw_if_index);
+    if (sif2 && (sif2->actor.state & LACP_STATE_SYNCHRONIZATION) &&
+       (sif2->ready_n == 0))
+      goto out;
+  }
+
+  vec_foreach (sw_if_index, bif->slaves)
+  {
+    sif2 = bond_get_slave_by_sw_if_index (*sw_if_index);
+    if (sif2)
+      {
+       sif2->ready = 1;
+       if (sif2->selected == LACP_PORT_SELECTED)
+         lacp_machine_dispatch (&lacp_mux_machine, vm, sif2,
+                                LACP_MUX_EVENT_READY, &sif2->mux_state);
+      }
+  }
+out:
+  lacp_set_port_selected (vm, sif);
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */