span: add feature (rx only) (VPP-185)

Change-Id: I0f7cbf06b5a5acd745d13c9f5c761ea18132107b
Signed-off-by: marek <mazavods@gmail.com>
Signed-off-by: Damjan Marion <damarion@cisco.com>
Signed-off-by: Pavel Kotucek <pkotucek@cisco.com>
Signed-off-by: Damjan Marion <damarion@cisco.com>

3 files changed, 116 insertions, 0 deletions

diff --git a/vpp/vpp-api/api.c b/vpp/vpp-api/api.c
index ff0e9e82..1ecd1481 100644
--- a/vpp/vpp-api/api.c
+++ b/vpp/vpp-api/api.c
@@ -110,6 +110,7 @@
 #include <vnet/l2/l2_fib.h>
 #include <vnet/l2/l2_bd.h>
 #include <vpp-api/vpe_msg_enum.h>
+#include <vnet/span/span.h>
 
 #include <vnet/fib/ip6_fib.h>
 #include <vnet/fib/ip4_fib.h>
@@ -444,6 +445,8 @@ _(SET_IPFIX_CLASSIFY_STREAM, set_ipfix_classify_stream)                 \
 _(IPFIX_CLASSIFY_STREAM_DUMP, ipfix_classify_stream_dump)               \
 _(IPFIX_CLASSIFY_TABLE_ADD_DEL, ipfix_classify_table_add_del)           \
 _(IPFIX_CLASSIFY_TABLE_DUMP, ipfix_classify_table_dump)                 \
+_(SW_INTERFACE_SPAN_ENABLE_DISABLE, sw_interface_span_enable_disable)   \
+_(SW_INTERFACE_SPAN_DUMP, sw_interface_span_dump)                       \
 _(GET_NEXT_INDEX, get_next_index)                                       \
 _(PG_CREATE_INTERFACE, pg_create_interface)                             \
 _(PG_CAPTURE, pg_capture)                                               \
@@ -8595,6 +8598,49 @@ static void
 }
 
 static void
+  vl_api_sw_interface_span_enable_disable_t_handler
+  (vl_api_sw_interface_span_enable_disable_t * mp)
+{
+  vl_api_sw_interface_span_enable_disable_reply_t *rmp;
+  int rv;
+
+  vlib_main_t *vm = vlib_get_main ();
+
+  rv = span_add_delete_entry (vm, ntohl (mp->sw_if_index_from),
+			      ntohl (mp->sw_if_index_to), mp->enable);
+
+  REPLY_MACRO (VL_API_SW_INTERFACE_SPAN_ENABLE_DISABLE_REPLY);
+}
+
+static void
+vl_api_sw_interface_span_dump_t_handler (vl_api_sw_interface_span_dump_t * mp)
+{
+
+  unix_shared_memory_queue_t *q;
+  vl_api_sw_interface_span_details_t *rmp;
+  span_main_t *sm = &span_main;
+  u32 src_sw_if_index = 0, *dst_sw_if_index;
+
+  q = vl_api_client_index_to_input_queue (mp->client_index);
+  vec_foreach (dst_sw_if_index, sm->dst_by_src_sw_if_index)
+  {
+    if (*dst_sw_if_index > 0)
+      {
+	rmp = vl_msg_api_alloc (sizeof (*rmp));
+	memset (rmp, 0, sizeof (*rmp));
+	rmp->_vl_msg_id = ntohs (VL_API_SW_INTERFACE_SPAN_DETAILS);
+	rmp->context = mp->context;
+
+	rmp->sw_if_index_from = htonl (src_sw_if_index);
+	rmp->sw_if_index_to = htonl (*dst_sw_if_index);
+
+	vl_msg_api_send_shmem (q, (u8 *) & rmp);
+      }
+    src_sw_if_index++;
+  }
+}
+
+static void
 vl_api_pg_create_interface_t_handler (vl_api_pg_create_interface_t * mp)
 {
   vl_api_pg_create_interface_reply_t *rmp;
diff --git a/vpp/vpp-api/custom_dump.c b/vpp/vpp-api/custom_dump.c
index 220ba988..b42130d6 100644
--- a/vpp/vpp-api/custom_dump.c
+++ b/vpp/vpp-api/custom_dump.c
@@ -2199,6 +2199,31 @@ static void *vl_api_ipfix_classify_table_dump_t_print
   FINISH;
 }
 
+static void *vl_api_sw_interface_span_enable_disable_t_print
+  (vl_api_sw_interface_span_enable_disable_t * mp, void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: sw_interface_span_enable_disable ");
+  s = format (s, "src_sw_if_index %u ", ntohl (mp->sw_if_index_from));
+  s = format (s, "dst_sw_if_index %u ", ntohl (mp->sw_if_index_to));
+  if (!mp->enable)
+    s = format (s, "disable ");
+
+  FINISH;
+}
+
+static void *
+vl_api_sw_interface_span_dump_t_print (vl_api_sw_interface_span_dump_t * mp,
+				       void *handle)
+{
+  u8 *s;
+
+  s = format (0, "SCRIPT: sw_interface_span_dump ");
+
+  FINISH;
+}
+
 static void *vl_api_get_next_index_t_print
   (vl_api_get_next_index_t * mp, void *handle)
 {
@@ -2981,6 +3006,8 @@ _(SET_IPFIX_CLASSIFY_STREAM, set_ipfix_classify_stream)                 \
 _(IPFIX_CLASSIFY_STREAM_DUMP, ipfix_classify_stream_dump)               \
 _(IPFIX_CLASSIFY_TABLE_ADD_DEL, ipfix_classify_table_add_del)           \
 _(IPFIX_CLASSIFY_TABLE_DUMP, ipfix_classify_table_dump)                 \
+_(SW_INTERFACE_SPAN_ENABLE_DISABLE, sw_interface_span_enable_disable)   \
+_(SW_INTERFACE_SPAN_DUMP, sw_interface_span_dump)                       \
 _(GET_NEXT_INDEX, get_next_index)                                       \
 _(PG_CREATE_INTERFACE,pg_create_interface)                              \
 _(PG_CAPTURE, pg_capture)                                               \
diff --git a/vpp/vpp-api/vpe.api b/vpp/vpp-api/vpe.api
index dc2d4850..e69979c6 100644
--- a/vpp/vpp-api/vpe.api
+++ b/vpp/vpp-api/vpe.api
@@ -4980,6 +4980,49 @@ define flow_classify_details {
     u32 table_index;
 };
 
+/** \brief Enable/Disable span to mirror traffic from one interface to another
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context which was passed in the request
+    @param sw_if_index_from - interface to be mirorred
+    @param sw_if_index_to - interface where the traffic is mirrored
+    @param enable - 1 enable SPAN, 0 SPAN on given interface
+*/
+define sw_interface_span_enable_disable{
+    u32 client_index;
+    u32 context;
+    u32 sw_if_index_from;
+    u32 sw_if_index_to;
+    u8  enable;
+};
+
+/** \brief Reply to SPAN enable/disable request
+    @param context - sender context which was passed in the request
+*/
+define sw_interface_span_enable_disable_reply {
+    u32 context;
+    i32 retval;
+};
+
+/** \brief SPAN dump request
+    @param client_index - opaque cookie to identify the sender
+    @param context - sender context, to match reply w/ request
+*/
+define sw_interface_span_dump {
+    u32 client_index;
+    u32 context;
+};
+
+/** \brief Reply to SPAN dump request
+    @param context - sender context which was passed in the request
+    @param sw_if_index_from - mirorred interface
+    @param sw_if_index_to - interface where the traffic is mirrored
+*/
+define sw_interface_span_details {
+    u32 context;
+    u32 sw_if_index_from;
+    u32 sw_if_index_to;
+};
+
 /** \brief Query relative index via node names
     @param client_index - opaque cookie to identify the sender
     @param context - sender context, to match reply w/ request