Pipes

A pipe resembles a unix pipe. Each end of the pipe is a full
VPP interface.
pipes can be used for e.g. packet recirculation, inter-BD, etc.

Change-Id: I185bb9fb43dd233ff45da63ac1b85ae2e1ceca16
Signed-off-by: Neale Ranns <neale.ranns@cisco.com>

2 files changed, 15 insertions, 3 deletions

diff --git a/src/vnet/ethernet/interface.c b/src/vnet/ethernet/interface.c
index b3ea983e50d..e39ae7b989e 100644
--- a/src/vnet/ethernet/interface.c
+++ b/src/vnet/ethernet/interface.c
@@ -91,7 +91,8 @@ ethernet_build_rewrite (vnet_main_t * vnm,
   u8 *rewrite = NULL;
   u8 is_p2p = 0;
 
-  if (sub_sw->type == VNET_SW_INTERFACE_TYPE_P2P)
+  if ((sub_sw->type == VNET_SW_INTERFACE_TYPE_P2P) ||
+      (sub_sw->type == VNET_SW_INTERFACE_TYPE_PIPE))
     is_p2p = 1;
   if (sub_sw != sup_sw)
     {
@@ -197,7 +198,8 @@ ethernet_update_adjacency (vnet_main_t * vnm, u32 sw_if_index, u32 ai)
   adj = adj_get (ai);
 
   vnet_sw_interface_t *si = vnet_get_sw_interface (vnm, sw_if_index);
-  if (si->type == VNET_SW_INTERFACE_TYPE_P2P)
+  if ((si->type == VNET_SW_INTERFACE_TYPE_P2P) ||
+      (si->type == VNET_SW_INTERFACE_TYPE_PIPE))
     {
       default_update_adjacency (vnm, sw_if_index, ai);
     }
@@ -748,6 +750,7 @@ vnet_delete_sub_interface (u32 sw_if_index)
 
   si = vnet_get_sw_interface (vnm, sw_if_index);
   if (si->type == VNET_SW_INTERFACE_TYPE_SUB ||
+      si->type == VNET_SW_INTERFACE_TYPE_PIPE ||
       si->type == VNET_SW_INTERFACE_TYPE_P2P)
     {
       vnet_interface_main_t *im = &vnm->interface_main;
diff --git a/src/vnet/ethernet/node.c b/src/vnet/ethernet/node.c
index 55d8285f81e..86676673ed3 100755
--- a/src/vnet/ethernet/node.c
+++ b/src/vnet/ethernet/node.c
@@ -41,6 +41,7 @@
 #include <vnet/pg/pg.h>
 #include <vnet/ethernet/ethernet.h>
 #include <vnet/ethernet/p2p_ethernet.h>
+#include <vnet/devices/pipe/pipe.h>
 #include <vppinfra/sparse_vec.h>
 #include <vnet/l2/l2_bvi.h>
 
@@ -838,6 +839,14 @@ ethernet_sw_interface_get_config (vnet_main_t * vnm,
 	subint = vec_elt_at_index (p2pm->p2p_subif_pool, si->p2p.pool_index);
       *flags = SUBINT_CONFIG_P2P;
     }
+  else if (si->type == VNET_SW_INTERFACE_TYPE_PIPE)
+    {
+      pipe_t *pipe;
+
+      pipe = pipe_get (sw_if_index);
+      subint = &pipe->subint;
+      *flags = SUBINT_CONFIG_P2P;
+    }
   else if (si->sub.eth.flags.default_sub)
     {
       subint = &main_intf->default_subint;
@@ -1127,7 +1136,7 @@ ethernet_sw_interface_add_del (vnet_main_t * vnm,
     }
   else
     {
-      // Note that config is L3 by defaulty
+      // Note that config is L3 by default
       subint->flags = SUBINT_CONFIG_VALID | match_flags;
       subint->sw_if_index = ~0;	// because interfaces are initially down
     }