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authorShwetha <shwethab@cisco.com>2016-08-08 15:51:04 +0100
committerDave Barach <openvpp@barachs.net>2016-08-22 17:19:04 +0000
commita91cbe698281ff339273b1624fb3860ee9c4c2c7 (patch)
treebf899879467d0a2d640e2e92643ccc8981a619ec /plugins/ioam-plugin/ioam/export/ioam_export.c
parentaa88697b71878b0d28fd497e97300067aea735a1 (diff)
Raw export of IP6 packet with iOAM metadata
- is enabled on iOAM pop nodes with "set ioam export ipfix collector" - ioam_export_node Hooks into vlib graph b/n ip6-hop-by-hop node and ip6-pop-hop-by-hop node - A buffer per worker thread is created for collecting packet data to be exported - ioam_export_node exports first 3 cachelines by collecting it in a MTU sized frame, slaps on ipfix header for export - ioam_export_thread process node - checks for unsent record buffers for longer than 20 seconds and exports it - Added dual loop and prefetch in add, hop-by-hop and pop functions To be done: - IPfix template - Multi collector distribution of ipfix packets - Port to be configurable Change-Id: I959b4253036551382562bdaf10a83fd6f2f1c88b Signed-off-by: Shwetha <shwethab@cisco.com>
Diffstat (limited to 'plugins/ioam-plugin/ioam/export/ioam_export.c')
-rw-r--r--plugins/ioam-plugin/ioam/export/ioam_export.c258
1 files changed, 258 insertions, 0 deletions
diff --git a/plugins/ioam-plugin/ioam/export/ioam_export.c b/plugins/ioam-plugin/ioam/export/ioam_export.c
new file mode 100644
index 00000000000..9efcab05487
--- /dev/null
+++ b/plugins/ioam-plugin/ioam/export/ioam_export.c
@@ -0,0 +1,258 @@
+/*
+ * Copyright (c) 2016 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.
+ */
+/*
+ *------------------------------------------------------------------
+ * ioam_export.c - ioam export API / debug CLI handling
+ *------------------------------------------------------------------
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/plugin/plugin.h>
+#include <ioam/export/ioam_export.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vlibsocket/api.h>
+#include <vnet/ip/ip6_hop_by_hop.h>
+
+#include "ioam_export.h"
+
+/* define message IDs */
+#include <ioam/export/ioam_export_msg_enum.h>
+
+/* define message structures */
+#define vl_typedefs
+#include <ioam/export/ioam_export_all_api_h.h>
+#undef vl_typedefs
+
+/* define generated endian-swappers */
+#define vl_endianfun
+#include <ioam/export/ioam_export_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
+#define vl_printfun
+#include <ioam/export/ioam_export_all_api_h.h>
+#undef vl_printfun
+
+/* Get the API version number */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <ioam/export/ioam_export_all_api_h.h>
+#undef vl_api_version
+
+/*
+ * A handy macro to set up a message reply.
+ * Assumes that the following variables are available:
+ * mp - pointer to request message
+ * rmp - pointer to reply message type
+ * rv - return value
+ */
+
+#define REPLY_MACRO(t) \
+do { \
+ unix_shared_memory_queue_t * q = \
+ vl_api_client_index_to_input_queue (mp->client_index); \
+ if (!q) \
+ return; \
+ \
+ rmp = vl_msg_api_alloc (sizeof (*rmp)); \
+ rmp->_vl_msg_id = ntohs((t)+sm->msg_id_base); \
+ rmp->context = mp->context; \
+ rmp->retval = ntohl(rv); \
+ \
+ vl_msg_api_send_shmem (q, (u8 *)&rmp); \
+} while(0);
+
+
+/* List of message types that this plugin understands */
+
+#define foreach_ioam_export_plugin_api_msg \
+_(IOAM_EXPORT_IP6_ENABLE_DISABLE, ioam_export_ip6_enable_disable)
+
+/*
+ * This routine exists to convince the vlib plugin framework that
+ * we haven't accidentally copied a random .dll into the plugin directory.
+ *
+ * Also collects global variable pointers passed from the vpp engine
+ */
+
+clib_error_t *
+vlib_plugin_register (vlib_main_t * vm, vnet_plugin_handoff_t * h,
+ int from_early_init)
+{
+ ioam_export_main_t *em = &ioam_export_main;
+ clib_error_t *error = 0;
+
+ em->vlib_main = vm;
+ em->vnet_main = h->vnet_main;
+ em->ethernet_main = h->ethernet_main;
+
+ return error;
+}
+
+/* Action function shared between message handler and debug CLI */
+
+int
+ioam_export_ip6_enable_disable (ioam_export_main_t * em,
+ u8 is_disable,
+ ip4_address_t * collector_address,
+ ip4_address_t * src_address)
+{
+ vlib_main_t *vm = em->vlib_main;
+
+ if (is_disable == 0)
+ {
+ if (1 == ioam_export_header_create (collector_address, src_address))
+ {
+ ioam_export_thread_buffer_init (vm);
+ ip6_hbh_set_next_override (em->my_hbh_slot);
+ /* Turn on the export buffer check process */
+ vlib_process_signal_event (vm, em->export_process_node_index, 1, 0);
+
+ }
+ else
+ {
+ return (-2);
+ }
+ }
+ else
+ {
+ ip6_hbh_set_next_override (IP6_LOOKUP_NEXT_POP_HOP_BY_HOP);
+ ioam_export_header_cleanup (collector_address, src_address);
+ ioam_export_thread_buffer_free ();
+ /* Turn off the export buffer check process */
+ vlib_process_signal_event (vm, em->export_process_node_index, 2, 0);
+
+ }
+
+ return 0;
+}
+
+/* API message handler */
+static void vl_api_ioam_export_ip6_enable_disable_t_handler
+ (vl_api_ioam_export_ip6_enable_disable_t * mp)
+{
+ vl_api_ioam_export_ip6_enable_disable_reply_t *rmp;
+ ioam_export_main_t *sm = &ioam_export_main;
+ int rv;
+
+ rv = ioam_export_ip6_enable_disable (sm, (int) (mp->is_disable),
+ (ip4_address_t *) mp->
+ collector_address,
+ (ip4_address_t *) mp->src_address);
+
+ REPLY_MACRO (VL_API_IOAM_EXPORT_IP6_ENABLE_DISABLE_REPLY);
+}
+
+/* Set up the API message handling tables */
+static clib_error_t *
+ioam_export_plugin_api_hookup (vlib_main_t * vm)
+{
+ ioam_export_main_t *sm = &ioam_export_main;
+#define _(N,n) \
+ vl_msg_api_set_handlers((VL_API_##N + sm->msg_id_base), \
+ #n, \
+ vl_api_##n##_t_handler, \
+ vl_noop_handler, \
+ vl_api_##n##_t_endian, \
+ vl_api_##n##_t_print, \
+ sizeof(vl_api_##n##_t), 1);
+ foreach_ioam_export_plugin_api_msg;
+#undef _
+
+ return 0;
+}
+
+static clib_error_t *
+set_ioam_export_ipfix_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ ioam_export_main_t *em = &ioam_export_main;
+ ip4_address_t collector, src;
+ u8 is_disable = 0;
+
+ collector.as_u32 = 0;
+ src.as_u32 = 0;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "collector %U", unformat_ip4_address, &collector))
+ ;
+ else if (unformat (input, "src %U", unformat_ip4_address, &src))
+ ;
+ else if (unformat (input, "disable"))
+ is_disable = 1;
+ else
+ break;
+ }
+
+ if (collector.as_u32 == 0)
+ return clib_error_return (0, "collector address required");
+
+ if (src.as_u32 == 0)
+ return clib_error_return (0, "src address required");
+
+ em->ipfix_collector.as_u32 = collector.as_u32;
+ em->src_address.as_u32 = src.as_u32;
+
+ vlib_cli_output (vm, "Collector %U, src address %U",
+ format_ip4_address, &em->ipfix_collector,
+ format_ip4_address, &em->src_address);
+
+ /* Turn on the export timer process */
+ // vlib_process_signal_event (vm, flow_report_process_node.index,
+ //1, 0);
+ ioam_export_ip6_enable_disable (em, is_disable, &collector, &src);
+
+ return 0;
+}
+
+VLIB_CLI_COMMAND (set_ipfix_command, static) =
+{
+.path = "set ioam export ipfix",.short_help =
+ "set ioam export ipfix collector <ip4-address> src <ip4-address>",.
+ function = set_ioam_export_ipfix_command_fn,};
+
+
+static clib_error_t *
+ioam_export_init (vlib_main_t * vm)
+{
+ ioam_export_main_t *em = &ioam_export_main;
+ clib_error_t *error = 0;
+ u8 *name;
+ u32 node_index = export_node.index;
+ vlib_node_t *ip6_hbyh_node = NULL;
+
+ name = format (0, "ioam_export_%08x%c", api_version, 0);
+
+ /* Ask for a correctly-sized block of API message decode slots */
+ em->msg_id_base = vl_msg_api_get_msg_ids
+ ((char *) name, VL_MSG_FIRST_AVAILABLE);
+ em->unix_time_0 = (u32) time (0); /* Store starting time */
+ em->vlib_time_0 = vlib_time_now (vm);
+
+ error = ioam_export_plugin_api_hookup (vm);
+
+ /* Hook this export node to ip6-hop-by-hop */
+ ip6_hbyh_node = vlib_get_node_by_name (vm, (u8 *) "ip6-hop-by-hop");
+ em->my_hbh_slot = vlib_node_add_next (vm, ip6_hbyh_node->index, node_index);
+ vec_free (name);
+
+ return error;
+}
+
+VLIB_INIT_FUNCTION (ioam_export_init);