pvti: Packet Vector Tunnel Interface

This plugin implements a PoC of UDP-based tunnel substrate whose aim is
to specifically provide higher MTU to the upper layers by chunking
the payload PDUs into smaller packets with full 5-tuple.

At the same time, if there are multiple small packets to
the same destination during the vector processing, they
are packed into "carrier" packets up to underlay MTU size.

It does assume a trustworthy underlying medium, thus for the
operation over Internet it requires the use of encryption layer
underneath.

Type: feature
Change-Id: I323958fa8de62584f6ed15643ea689568a9a62bc
Signed-off-by: Andrew Yourtchenko <ayourtch@gmail.com>

1 files changed, 47 insertions, 0 deletions

diff --git a/src/plugins/pvti/pvti_if.h b/src/plugins/pvti/pvti_if.h
new file mode 100644
index 00000000000..44bf22ce825
--- /dev/null
+++ b/src/plugins/pvti/pvti_if.h
@@ -0,0 +1,47 @@
+#ifndef PVTI_IF_H
+#define PVTI_IF_H
+
+#include <vnet/interface_funcs.h>
+
+typedef enum
+{
+  PVTI_PEER_ADDRESS_FIXED = 0,
+  PVTI_PEER_ADDRESS_FROM_PAYLOAD
+} pvti_peer_address_method_t;
+
+typedef walk_rc_t (*pvti_if_walk_cb_t) (index_t wgi, void *data);
+void pvti_if_walk (pvti_if_walk_cb_t fn, void *data);
+
+int pvti_if_create (ip_address_t *local_ip, u16 local_port,
+		    ip_address_t *remote_ip, u16 remote_port,
+		    pvti_peer_address_method_t peer_address_method,
+		    u16 underlay_mtu, u32 underlay_fib_index,
+		    u32 *sw_if_indexp);
+index_t pvti_if_find_by_sw_if_index (u32 sw_if_index);
+index_t pvti_if_find_by_remote_ip4_and_port (ip4_address_t *remote_ip4,
+					     u16 remote_port);
+index_t pvti_if_find_by_remote_ip6_and_port (ip6_address_t *remote_ip4,
+					     u16 remote_port);
+
+index_t pvti_if_find_by_remote_ip_and_port (ip_address_t *remote_ip,
+					    u16 remote_port);
+
+int pvti_if_delete (u32 sw_if_index);
+
+u8 *format_pvti_if (u8 *s, va_list *args);
+
+static_always_inline pvti_if_t *
+pvti_if_get (index_t pvtii)
+{
+  if (INDEX_INVALID == pvtii)
+    return (NULL);
+  return (pool_elt_at_index (pvti_main.if_pool, pvtii));
+}
+
+static_always_inline index_t
+pvti_if_get_index (pvti_if_t *pvti_if)
+{
+  return pvti_if - pvti_main.if_pool;
+}
+
+#endif