- @subpage lldp_doc
- @subpage ioam_plugin_doc
- @subpage lb_plugin_doc
+- @subpage flowperpkt_plugin_doc
if ENABLE_lb_PLUGIN
SUBDIRS += lb-plugin
endif
+
+if ENABLE_flowperpkt_PLUGIN
+SUBDIRS += flowperpkt-plugin
+endif
PLUGIN_ENABLED(snat)
PLUGIN_ENABLED(ila)
PLUGIN_ENABLED(lb)
+PLUGIN_ENABLED(flowperpkt)
# Disabled plugins, require --enable-XXX-plugin
PLUGIN_DISABLED(vcgn)
--- /dev/null
+
+# Copyright (c) <current-year> <your-organization>
+# 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.
+
+AUTOMAKE_OPTIONS = foreign subdir-objects
+
+AM_CFLAGS = -Wall
+AM_LDFLAGS = -module -shared -avoid-version
+
+vppapitestpluginsdir = ${libdir}/vpp_api_test_plugins
+vpppluginsdir = ${libdir}/vpp_plugins
+
+vppplugins_LTLIBRARIES = flowperpkt_plugin.la
+vppapitestplugins_LTLIBRARIES = flowperpkt_test_plugin.la
+
+flowperpkt_plugin_la_SOURCES = flowperpkt/flowperpkt.c \
+ flowperpkt/node.c \
+ flowperpkt/flowperpkt_plugin.api.h
+flowperpkt_plugin_la_LDFLAGS = -module
+
+BUILT_SOURCES = flowperpkt/flowperpkt.api.h
+
+SUFFIXES = .api.h .api
+
+%.api.h: %.api
+ mkdir -p `dirname $@` ; \
+ $(CC) $(CPPFLAGS) -E -P -C -x c $^ \
+ | vppapigen --input - --output $@ --show-name $@
+
+noinst_HEADERS = \
+ flowperpkt/flowperpkt_all_api_h.h \
+ flowperpkt/flowperpkt_msg_enum.h \
+ flowperpkt/flowperpkt.api.h
+
+flowperpkt_test_plugin_la_SOURCES = \
+ flowperpkt/flowperpkt_test.c flowperpkt/flowperpkt_plugin.api.h
+
+# Remove *.la files
+install-data-hook:
+ @(cd $(vpppluginsdir) && $(RM) $(vppplugins_LTLIBRARIES))
+ @(cd $(vppapitestpluginsdir) && $(RM) $(vppapitestplugins_LTLIBRARIES))
+
--- /dev/null
+
+AC_INIT(flowperpkt_plugin, 1.0)
+AM_INIT_AUTOMAKE
+AM_SILENT_RULES([yes])
+
+AC_PROG_LIBTOOL
+AC_PROG_CC
+
+AC_OUTPUT([Makefile])
--- /dev/null
+/* Define a simple enable-disable binary API to control the feature */
+
+/** \file
+ This file defines the vpp control-plane API messages
+ used to control the flowperpkt plugin
+*/
+
+/** \brief Enable / disable per-packet IPFIX recording on an interface
+ @param client_index - opaque cookie to identify the sender
+ @param context - sender context, to match reply w/ request
+ @param is_add - add address if non-zero, else delete
+ @param is_ipv6 - if non-zero the address is ipv6, else ipv4
+ @param sw_if_index - index of the interface
+*/
+manual_print define flowperpkt_tx_interface_add_del
+{
+ /* Client identifier, set from api_main.my_client_index */
+ u32 client_index;
+
+ /* Arbitrary context, so client can match reply to request */
+ u32 context;
+
+ /* Enable / disable the feature */
+ u8 is_add;
+ u8 is_ipv6;
+
+ /* Interface handle */
+ u32 sw_if_index;
+};
+
+/** \brief Reply to enable/disable per-packet IPFIX recording messages
+ @param context - returned sender context, to match reply w/ request
+ @param retval - return code
+*/
+define flowperpkt_tx_interface_add_del_reply
+{
+ /* From the request */
+ u32 context;
+
+ /* Return value, zero means all OK */
+ i32 retval;
+};
--- /dev/null
+/*
+ * flowperpkt.c - per-packet data capture flow report plugin
+ *
+ * Copyright (c) <current-year> <your-organization>
+ * 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.
+ */
+
+/**
+ * @file
+ * @brief Per-packet IPFIX flow record generator plugin
+ *
+ * This file implements vpp plugin registration mechanics,
+ * debug CLI, and binary API handling.
+ */
+
+#include <vnet/vnet.h>
+#include <vnet/plugin/plugin.h>
+#include <flowperpkt/flowperpkt.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vlibsocket/api.h>
+
+/* define message IDs */
+#include <flowperpkt/flowperpkt_msg_enum.h>
+
+/* define message structures */
+#define vl_typedefs
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_typedefs
+
+/* define generated endian-swappers */
+#define vl_endianfun
+#include <flowperpkt/flowperpkt_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 <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_printfun
+
+flowperpkt_main_t flowperpkt_main;
+
+/* Get the API version number */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_api_version
+
+/* Define the per-interface configurable feature */
+/* *INDENT-OFF* */
+VNET_IP4_TX_FEATURE_INIT (flow_perpacket, static) = {
+ .node_name = "flowperpkt",
+ .runs_before = (char *[]){"interface-output", 0},
+ .feature_index = &flowperpkt_main.ip4_tx_feature_index,
+};
+/* *INDENT-ON* */
+
+/*
+ * 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)+fm->msg_id_base); \
+ rmp->context = mp->context; \
+ rmp->retval = ntohl(rv); \
+ \
+ vl_msg_api_send_shmem (q, (u8 *)&rmp); \
+} while(0);
+
+/* Macro to finish up custom dump fns */
+#define FINISH \
+ vec_add1 (s, 0); \
+ vl_print (handle, (char *)s); \
+ vec_free (s); \
+ return handle;
+
+#define VALIDATE_SW_IF_INDEX(mp) \
+ do { u32 __sw_if_index = ntohl(mp->sw_if_index); \
+ vnet_main_t *__vnm = vnet_get_main(); \
+ if (pool_is_free_index(__vnm->interface_main.sw_interfaces, \
+ __sw_if_index)) { \
+ rv = VNET_API_ERROR_INVALID_SW_IF_INDEX; \
+ goto bad_sw_if_index; \
+ } \
+} while(0);
+
+#define BAD_SW_IF_INDEX_LABEL \
+do { \
+bad_sw_if_index: \
+ ; \
+} while (0);
+
+/**
+ * @brief Create an IPFIX template packet rewrite string
+ * @param frm flow_report_main_t *
+ * @param fr flow_report_t *
+ * @param collector_address ip4_address_t * the IPFIX collector address
+ * @param src_address ip4_address_t * the source address we should use
+ * @param collector_port u16 the collector port we should use, host byte order
+ * @returns u8 * vector containing the indicated IPFIX template packet
+ */
+u8 *
+flowperpkt_template_rewrite (flow_report_main_t * frm,
+ flow_report_t * fr,
+ ip4_address_t * collector_address,
+ ip4_address_t * src_address, u16 collector_port)
+{
+ ip4_header_t *ip;
+ udp_header_t *udp;
+ ipfix_message_header_t *h;
+ ipfix_set_header_t *s;
+ ipfix_template_header_t *t;
+ ipfix_field_specifier_t *f;
+ ipfix_field_specifier_t *first_field;
+ u8 *rewrite = 0;
+ ip4_ipfix_template_packet_t *tp;
+ u32 field_count = 0;
+ flow_report_stream_t *stream;
+
+ stream = &frm->streams[fr->stream_index];
+
+ /*
+ * Supported Fields:
+ *
+ * egressInterface, TLV type 14, u32
+ * ipClassOfService, TLV type 5, u8
+ * flowStartNanoseconds, TLV type 156, dateTimeNanoseconds (f64)
+ * Implementation: f64 nanoseconds since VPP started
+ * warning: wireshark doesn't really understand this TLV
+ * dataLinkFrameSize, TLV type 312, u16
+ * warning: wireshark doesn't understand this TLV at all
+ */
+
+ /* Currently 4 fields */
+ field_count += 4;
+
+ /* allocate rewrite space */
+ vec_validate_aligned (rewrite,
+ sizeof (ip4_ipfix_template_packet_t)
+ + field_count * sizeof (ipfix_field_specifier_t) - 1,
+ CLIB_CACHE_LINE_BYTES);
+
+ tp = (ip4_ipfix_template_packet_t *) rewrite;
+ ip = (ip4_header_t *) & tp->ip4;
+ udp = (udp_header_t *) (ip + 1);
+ h = (ipfix_message_header_t *) (udp + 1);
+ s = (ipfix_set_header_t *) (h + 1);
+ t = (ipfix_template_header_t *) (s + 1);
+ first_field = f = (ipfix_field_specifier_t *) (t + 1);
+
+ ip->ip_version_and_header_length = 0x45;
+ ip->ttl = 254;
+ ip->protocol = IP_PROTOCOL_UDP;
+ ip->src_address.as_u32 = src_address->as_u32;
+ ip->dst_address.as_u32 = collector_address->as_u32;
+ udp->src_port = clib_host_to_net_u16 (stream->src_port);
+ udp->dst_port = clib_host_to_net_u16 (collector_port);
+ udp->length = clib_host_to_net_u16 (vec_len (rewrite) - sizeof (*ip));
+
+ /* FIXUP: message header export_time */
+ /* FIXUP: message header sequence_number */
+ h->domain_id = clib_host_to_net_u32 (stream->domain_id);
+
+ /* Add TLVs to the template */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ , egressInterface,
+ 4);
+ f++;
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ , ipClassOfService,
+ 1);
+ f++;
+ f->e_id_length =
+ ipfix_e_id_length (0 /* enterprise */ , flowStartNanoseconds,
+ 8);
+ f++;
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ , dataLinkFrameSize,
+ 2);
+ f++;
+ /* Extend in the obvious way, right here... */
+
+ /* Back to the template packet... */
+ ip = (ip4_header_t *) & tp->ip4;
+ udp = (udp_header_t *) (ip + 1);
+
+ ASSERT (f - first_field);
+ /* Field count in this template */
+ t->id_count = ipfix_id_count (fr->template_id, f - first_field);
+
+ /* set length in octets */
+ s->set_id_length =
+ ipfix_set_id_length (2 /* set_id */ , (u8 *) f - (u8 *) s);
+
+ /* message length in octets */
+ h->version_length = version_length ((u8 *) f - (u8 *) h);
+
+ ip->length = clib_host_to_net_u16 ((u8 *) f - (u8 *) ip);
+ ip->checksum = ip4_header_checksum (ip);
+
+ return rewrite;
+}
+
+/**
+ * @brief Flush accumulated data
+ * @param frm flow_report_main_t *
+ * @param fr flow_report_t *
+ * @param f vlib_frame_t *
+ *
+ * <em>Notes:</em>
+ * This function must simply return the incoming frame, or no template packets
+ * will be sent.
+ */
+vlib_frame_t *
+flowperpkt_data_callback (flow_report_main_t * frm,
+ flow_report_t * fr,
+ vlib_frame_t * f, u32 * to_next, u32 node_index)
+{
+ flowperpkt_flush_callback ();
+ return f;
+}
+
+/**
+ * @brief configure / deconfigure the IPFIX flow-per-packet
+ * @param fm flowperpkt_main_t * fm
+ * @param sw_if_index u32 the desired interface
+ * @param is_add int 1 to enable the feature, 0 to disable it
+ * @returns 0 if successful, non-zero otherwise
+ */
+
+static int flowperpkt_tx_interface_add_del_feature
+ (flowperpkt_main_t * fm, u32 sw_if_index, int is_add)
+{
+ u32 ci;
+ ip4_main_t *im = &ip4_main;
+ ip_lookup_main_t *lm = &im->lookup_main;
+ ip_config_main_t *cm = &lm->feature_config_mains[VNET_IP_TX_FEAT];
+ u32 feature_index;
+ flow_report_main_t *frm = &flow_report_main;
+ vnet_flow_report_add_del_args_t _a, *a = &_a;
+ int rv;
+
+ if (!fm->report_created)
+ {
+ memset (a, 0, sizeof (*a));
+ a->rewrite_callback = flowperpkt_template_rewrite;
+ a->flow_data_callback = flowperpkt_data_callback;
+ a->is_add = 1;
+ a->domain_id = 1; /*$$$$ config parameter */
+ a->src_port = 4739; /*$$$$ config parameter */
+ fm->report_created = 1;
+
+ rv = vnet_flow_report_add_del (frm, a);
+ if (rv)
+ {
+ clib_warning ("vnet_flow_report_add_del returned %d", rv);
+ return -1;
+ }
+ }
+
+ feature_index = fm->ip4_tx_feature_index;
+
+ ci = cm->config_index_by_sw_if_index[sw_if_index];
+ ci = (is_add
+ ? vnet_config_add_feature
+ : vnet_config_del_feature)
+ (fm->vlib_main, &cm->config_main,
+ ci, feature_index, 0 /* config struct */ ,
+ 0 /* sizeof config struct */ );
+ cm->config_index_by_sw_if_index[sw_if_index] = ci;
+
+ vnet_config_update_tx_feature_count (lm, cm, sw_if_index, is_add);
+ return 0;
+}
+
+/**
+ * @brief API message handler
+ * @param mp vl_api_flowperpkt_tx_interface_add_del_t * mp the api message
+ */
+void vl_api_flowperpkt_tx_interface_add_del_t_handler
+ (vl_api_flowperpkt_tx_interface_add_del_t * mp)
+{
+ flowperpkt_main_t *fm = &flowperpkt_main;
+ vl_api_flowperpkt_tx_interface_add_del_reply_t *rmp;
+ u32 sw_if_index = ntohl (mp->sw_if_index);
+ int rv = 0;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ rv = flowperpkt_tx_interface_add_del_feature (fm, sw_if_index, mp->is_add);
+
+ BAD_SW_IF_INDEX_LABEL;
+
+ REPLY_MACRO (VL_API_FLOWPERPKT_TX_INTERFACE_ADD_DEL_REPLY);
+}
+
+/**
+ * @brief API message custom-dump function
+ * @param mp vl_api_flowperpkt_tx_interface_add_del_t * mp the api message
+ * @param handle void * print function handle
+ * @returns u8 * output string
+ */
+static void *vl_api_flowperpkt_tx_interface_add_del_t_print
+ (vl_api_flowperpkt_tx_interface_add_del_t * mp, void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: flowperpkt_tx_interface_add_del ");
+ s = format (s, "sw_if_index %d is_add %d is_ipv6 %d ",
+ clib_host_to_net_u32 (mp->sw_if_index),
+ (int) mp->is_add, (int) mp->is_ipv6);
+ FINISH;
+}
+
+/* List of message types that this plugin understands */
+#define foreach_flowperpkt_plugin_api_msg \
+_(FLOWPERPKT_TX_INTERFACE_ADD_DEL, flowperpkt_tx_interface_add_del)
+
+/**
+ * @brief plugin-api required function
+ * @param vm vlib_main_t * vlib main data structure pointer
+ * @param h vlib_plugin_handoff_t * handoff structure
+ * @param from_early_init int notused
+ *
+ * <em>Notes:</em>
+ * 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)
+{
+ flowperpkt_main_t *fm = &flowperpkt_main;
+ clib_error_t *error = 0;
+
+ fm->vlib_main = vm;
+ fm->vnet_main = h->vnet_main;
+
+ return error;
+}
+
+static clib_error_t *
+flowperpkt_tx_interface_add_del_feature_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ flowperpkt_main_t *fm = &flowperpkt_main;
+ u32 sw_if_index = ~0;
+ int is_add = 1;
+
+ int rv;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "disable"))
+ is_add = 0;
+ else if (unformat (input, "%U", unformat_vnet_sw_interface,
+ fm->vnet_main, &sw_if_index))
+ ;
+ else
+ break;
+ }
+
+ if (sw_if_index == ~0)
+ return clib_error_return (0, "Please specify an interface...");
+
+ rv = flowperpkt_tx_interface_add_del_feature (fm, sw_if_index, is_add);
+ switch (rv)
+ {
+ case 0:
+ break;
+
+ case VNET_API_ERROR_INVALID_SW_IF_INDEX:
+ return clib_error_return
+ (0, "Invalid interface, only works on physical ports");
+ break;
+
+ case VNET_API_ERROR_UNIMPLEMENTED:
+ return clib_error_return (0, "ip6 not supported");
+ break;
+
+ default:
+ return clib_error_return (0, "flowperpkt_enable_disable returned %d",
+ rv);
+ }
+ return 0;
+}
+
+/*?
+ * '<em>flowperpkt feature add-del</em>' commands to enable/disable
+ * per-packet IPFIX flow record generation on an interface
+ *
+ * @cliexpar
+ * @parblock
+ * To enable per-packet IPFIX flow-record generation on an interface:
+ * @cliexcmd{flowperpkt feature add-del GigabitEthernet2/0/0}
+ *
+ * To disable per-packet IPFIX flow-record generation on an interface:
+ * @cliexcmd{flowperpkt feature add-del GigabitEthernet2/0/0 disable}
+ * @cliexend
+ * @endparblock
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (flowperpkt_enable_disable_command, static) = {
+ .path = "flowperpkt feature add-del",
+ .short_help =
+ "flowperpkt feature add-del <interface-name> [disable]",
+ .function = flowperpkt_tx_interface_add_del_feature_command_fn,
+};
+/* *INDENT-ON* */
+
+/**
+ * @brief Set up the API message handling tables
+ * @param vm vlib_main_t * vlib main data structure pointer
+ * @returns 0 to indicate all is well
+ */
+static clib_error_t *
+flowperpkt_plugin_api_hookup (vlib_main_t * vm)
+{
+ flowperpkt_main_t *fm = &flowperpkt_main;
+#define _(N,n) \
+ vl_msg_api_set_handlers((VL_API_##N + fm->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_flowperpkt_plugin_api_msg;
+#undef _
+
+ return 0;
+}
+
+/**
+ * @brief Set up the API message handling tables
+ * @param vm vlib_main_t * vlib main data structure pointer
+ * @returns 0 to indicate all is well, or a clib_error_t
+ */
+static clib_error_t *
+flowperpkt_init (vlib_main_t * vm)
+{
+ flowperpkt_main_t *fm = &flowperpkt_main;
+ vlib_thread_main_t *tm = &vlib_thread_main;
+ clib_error_t *error = 0;
+ u32 num_threads;
+ u8 *name;
+
+ /* Construct the API name */
+ name = format (0, "flowperpkt_%08x%c", api_version, 0);
+
+ /* Ask for a correctly-sized block of API message decode slots */
+ fm->msg_id_base = vl_msg_api_get_msg_ids
+ ((char *) name, VL_MSG_FIRST_AVAILABLE);
+
+ /* Hook up message handlers */
+ error = flowperpkt_plugin_api_hookup (vm);
+
+ vec_free (name);
+
+ /* Decide how many worker threads we have */
+ num_threads = 1 /* main thread */ + tm->n_eal_threads;
+
+ /* Allocate per worker thread vectors */
+ vec_validate (fm->buffers_per_worker, num_threads - 1);
+ vec_validate (fm->frames_per_worker, num_threads - 1);
+ vec_validate (fm->next_record_offset_per_worker, num_threads - 1);
+
+ return error;
+}
+
+VLIB_INIT_FUNCTION (flowperpkt_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * flowperpkt.h - skeleton vpp engine plug-in header file
+ *
+ * Copyright (c) <current-year> <your-organization>
+ * 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.
+ */
+#ifndef __included_flowperpkt_h__
+#define __included_flowperpkt_h__
+
+#include <vnet/vnet.h>
+#include <vnet/ip/ip.h>
+#include <vnet/ethernet/ethernet.h>
+
+#include <vppinfra/hash.h>
+#include <vppinfra/error.h>
+#include <vnet/flow/flow_report.h>
+#include <vnet/flow/flow_report_classify.h>
+
+/**
+ * @file
+ * @brief flow-per-packet plugin header file
+ */
+typedef struct
+{
+ /** API message ID base */
+ u16 msg_id_base;
+
+ /** ip4 feature index */
+ u32 ip4_tx_feature_index;
+
+ /** Has the report been created? */
+ int report_created;
+
+ /** ipfix buffers under construction, per-worker thread */
+ vlib_buffer_t **buffers_per_worker;
+ /** frames containing ipfix buffers, per-worker thread */
+ vlib_frame_t **frames_per_worker;
+ /** next record offset, per worker thread */
+ u16 *next_record_offset_per_worker;
+
+ /** convenience vlib_main_t pointer */
+ vlib_main_t *vlib_main;
+ /** convenience vnet_main_t pointer */
+ vnet_main_t *vnet_main;
+} flowperpkt_main_t;
+
+extern flowperpkt_main_t flowperpkt_main;
+
+vlib_node_registration_t flowperpkt_node;
+
+void flowperpkt_flush_callback (void);
+
+#endif /* __included_flowperpkt_h__ */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * flowperpkt_all_api_h.h - plug-in api #include file
+ *
+ * Copyright (c) <current-year> <your-organization>
+ * 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 the generated file, see BUILT_SOURCES in Makefile.am */
+#include <flowperpkt/flowperpkt.api.h>
--- /dev/null
+/*
+ * flowperpkt_msg_enum.h - vpp engine plug-in message enumeration
+ *
+ * Copyright (c) <current-year> <your-organization>
+ * 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.
+ */
+#ifndef included_flowperpkt_msg_enum_h
+#define included_flowperpkt_msg_enum_h
+
+#include <vppinfra/byte_order.h>
+
+#define vl_msg_id(n,h) n,
+typedef enum
+{
+#include <flowperpkt/flowperpkt_all_api_h.h>
+ /* We'll want to know how many messages IDs we need... */
+ VL_MSG_FIRST_AVAILABLE,
+} vl_msg_id_t;
+#undef vl_msg_id
+
+#endif /* included_flowperpkt_msg_enum_h */
--- /dev/null
+/*
+ * flowperpkt.c - skeleton vpp-api-test plug-in
+ *
+ * Copyright (c) <current-year> <your-organization>
+ * 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 <vat/vat.h>
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vlibsocket/api.h>
+#include <vppinfra/error.h>
+
+/**
+ * @file vpp_api_test plugin
+ */
+
+uword unformat_sw_if_index (unformat_input_t * input, va_list * args);
+
+/* Declare message IDs */
+#include <flowperpkt/flowperpkt_msg_enum.h>
+
+/* define message structures */
+#define vl_typedefs
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_typedefs
+
+/* declare message handlers for each api */
+
+#define vl_endianfun /* define message structures */
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...)
+#define vl_printfun
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_printfun
+
+/* Get the API version number. */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <flowperpkt/flowperpkt_all_api_h.h>
+#undef vl_api_version
+
+typedef struct
+{
+ /** API message ID base */
+ u16 msg_id_base;
+ /** vat_main_t pointer */
+ vat_main_t *vat_main;
+} flowperpkt_test_main_t;
+
+flowperpkt_test_main_t flowperpkt_test_main;
+
+#define foreach_standard_reply_retval_handler \
+_(flowperpkt_tx_interface_add_del_reply)
+
+#define _(n) \
+ static void vl_api_##n##_t_handler \
+ (vl_api_##n##_t * mp) \
+ { \
+ vat_main_t * vam = flowperpkt_test_main.vat_main; \
+ i32 retval = ntohl(mp->retval); \
+ if (vam->async_mode) { \
+ vam->async_errors += (retval < 0); \
+ } else { \
+ vam->retval = retval; \
+ vam->result_ready = 1; \
+ } \
+ }
+foreach_standard_reply_retval_handler;
+#undef _
+
+/*
+ * Table of message reply handlers, must include boilerplate handlers
+ * we just generated
+ */
+#define foreach_vpe_api_reply_msg \
+_(FLOWPERPKT_TX_INTERFACE_ADD_DEL_REPLY, \
+ flowperpkt_tx_interface_add_del_reply)
+
+
+/* M: construct, but don't yet send a message */
+
+#define M(T,t) \
+do { \
+ vam->result_ready = 0; \
+ mp = vl_msg_api_alloc(sizeof(*mp)); \
+ memset (mp, 0, sizeof (*mp)); \
+ mp->_vl_msg_id = ntohs (VL_API_##T + sm->msg_id_base); \
+ mp->client_index = vam->my_client_index; \
+} while(0);
+
+#define M2(T,t,n) \
+do { \
+ vam->result_ready = 0; \
+ mp = vl_msg_api_alloc(sizeof(*mp)+(n)); \
+ memset (mp, 0, sizeof (*mp)); \
+ mp->_vl_msg_id = ntohs (VL_API_##T + sm->msg_id_base); \
+ mp->client_index = vam->my_client_index; \
+} while(0);
+
+/* S: send a message */
+#define S (vl_msg_api_send_shmem (vam->vl_input_queue, (u8 *)&mp))
+
+/* W: wait for results, with timeout */
+#define W \
+do { \
+ timeout = vat_time_now (vam) + 1.0; \
+ \
+ while (vat_time_now (vam) < timeout) { \
+ if (vam->result_ready == 1) { \
+ return (vam->retval); \
+ } \
+ } \
+ return -99; \
+} while(0);
+
+static int
+api_flowperpkt_tx_interface_add_del (vat_main_t * vam)
+{
+ flowperpkt_test_main_t *sm = &flowperpkt_test_main;
+ unformat_input_t *i = vam->input;
+ f64 timeout;
+ int enable_disable = 1;
+ u32 sw_if_index = ~0;
+ vl_api_flowperpkt_tx_interface_add_del_t *mp;
+
+ /* Parse args required to build the message */
+ while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (i, "%U", unformat_sw_if_index, vam, &sw_if_index))
+ ;
+ else if (unformat (i, "sw_if_index %d", &sw_if_index))
+ ;
+ else if (unformat (i, "disable"))
+ enable_disable = 0;
+ else
+ break;
+ }
+
+ if (sw_if_index == ~0)
+ {
+ errmsg ("missing interface name / explicit sw_if_index number \n");
+ return -99;
+ }
+
+ /* Construct the API message */
+ M (FLOWPERPKT_TX_INTERFACE_ADD_DEL, flowperpkt_tx_interface_add_del);
+ mp->sw_if_index = ntohl (sw_if_index);
+ mp->is_add = enable_disable;
+ mp->is_ipv6 = 0; /* $$$$ */
+
+ /* send it... */
+ S;
+
+ /* Wait for a reply... */
+ W;
+}
+
+/*
+ * List of messages that the api test plugin sends,
+ * and that the data plane plugin processes
+ */
+#define foreach_vpe_api_msg \
+_(flowperpkt_tx_interface_add_del, "<intfc> [disable]")
+
+void
+vat_api_hookup (vat_main_t * vam)
+{
+ flowperpkt_test_main_t *sm = &flowperpkt_test_main;
+ /* Hook up handlers for replies from the data plane plug-in */
+#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_vpe_api_reply_msg;
+#undef _
+
+ /* API messages we can send */
+#define _(n,h) hash_set_mem (vam->function_by_name, #n, api_##n);
+ foreach_vpe_api_msg;
+#undef _
+
+ /* Help strings */
+#define _(n,h) hash_set_mem (vam->help_by_name, #n, h);
+ foreach_vpe_api_msg;
+#undef _
+}
+
+clib_error_t *
+vat_plugin_register (vat_main_t * vam)
+{
+ flowperpkt_test_main_t *sm = &flowperpkt_test_main;
+ u8 *name;
+
+ sm->vat_main = vam;
+
+ /* Ask the vpp engine for the first assigned message-id */
+ name = format (0, "flowperpkt_%08x%c", api_version, 0);
+ sm->msg_id_base = vl_client_get_first_plugin_msg_id ((char *) name);
+
+ /* Don't attempt to hook up API messages if the data plane plugin is AWOL */
+ if (sm->msg_id_base != (u16) ~ 0)
+ vat_api_hookup (vam);
+
+ vec_free (name);
+
+ return 0;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+/*
+ * node.c - skeleton vpp engine plug-in dual-loop node skeleton
+ *
+ * Copyright (c) <current-year> <your-organization>
+ * 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 <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+#include <vppinfra/error.h>
+#include <flowperpkt/flowperpkt.h>
+
+/**
+ * @file flow record generator graph node
+ */
+
+typedef struct
+{
+ /** interface handle */
+ u32 sw_if_index;
+ /** ToS bits */
+ u8 tos;
+ /** packet timestamp */
+ f64 timestamp;
+ /** size of the buffer */
+ u16 buffer_size;
+} flowperpkt_trace_t;
+
+/* packet trace format function */
+static u8 *
+format_flowperpkt_trace (u8 * s, va_list * args)
+{
+ CLIB_UNUSED (vlib_main_t * vm) = va_arg (*args, vlib_main_t *);
+ CLIB_UNUSED (vlib_node_t * node) = va_arg (*args, vlib_node_t *);
+ flowperpkt_trace_t *t = va_arg (*args, flowperpkt_trace_t *);
+
+ s = format (s,
+ "FLOWPERPKT: sw_if_index %d, tos %0x2, timestamp %.6f, size %d",
+ t->sw_if_index, t->tos, t->timestamp, t->buffer_size);
+ return s;
+}
+
+vlib_node_registration_t flowperpkt_node;
+
+#define foreach_flowperpkt_error \
+_(SWAPPED, "Mac swap packets processed")
+
+typedef enum
+{
+#define _(sym,str) FLOWPERPKT_ERROR_##sym,
+ foreach_flowperpkt_error
+#undef _
+ FLOWPERPKT_N_ERROR,
+} flowperpkt_error_t;
+
+static char *flowperpkt_error_strings[] = {
+#define _(sym,string) string,
+ foreach_flowperpkt_error
+#undef _
+};
+
+typedef enum
+{
+ FLOWPERPKT_NEXT_DROP,
+ FLOWPERPKT_N_NEXT,
+} flowperpkt_next_t;
+
+/**
+ * @brief add an entry to the flow record under construction
+ * @param vm vlib_main_t * current worker thread main structure pointer
+ * @param fm flowperpkt_main_t * flow-per-packet main structure pointer
+ * @param sw_if_index u32 interface handle
+ * @param tos u8 ToS bits from the packet
+ * @param timestamp f64 timestamp, floating-point seconds since vpp started
+ * @param length u16 ip length of the packet
+ * @param do_flush int 1 = flush all cached records, 0 = construct a record
+ */
+
+static inline void
+add_to_flow_record (vlib_main_t * vm,
+ flowperpkt_main_t * fm,
+ u32 sw_if_index,
+ u8 tos, f64 timestamp, u16 length, int do_flush)
+{
+ u32 my_cpu_number = vm->cpu_index;
+ flow_report_main_t *frm = &flow_report_main;
+ ip4_header_t *ip;
+ udp_header_t *udp;
+ ip4_ipfix_template_packet_t *tp;
+ ipfix_message_header_t *h;
+ ipfix_set_header_t *s;
+ vlib_frame_t *f;
+ vlib_buffer_t *b0;
+ u16 offset;
+ u32 bi0;
+
+ /* Find or allocate a buffer */
+ b0 = fm->buffers_per_worker[my_cpu_number];
+
+ /* Need to allocate a buffer? */
+ if (PREDICT_FALSE (b0 == 0))
+ {
+ /* Nothing to flush */
+ if (do_flush)
+ return;
+
+ /* $$$$ drop counter? */
+ if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
+ return;
+ b0 = fm->buffers_per_worker[my_cpu_number] = vlib_get_buffer (vm, bi0);
+ offset = 0;
+ }
+ else
+ {
+ /* use the current buffer */
+ bi0 = vlib_get_buffer_index (vm, b0);
+ offset = fm->next_record_offset_per_worker[my_cpu_number];
+ }
+
+ /* Find or allocate a frame */
+ f = fm->frames_per_worker[my_cpu_number];
+ if (PREDICT_FALSE (f == 0))
+ {
+ u32 *to_next;
+ f = vlib_get_frame_to_node (vm, ip4_lookup_node.index);
+ fm->frames_per_worker[my_cpu_number] = f;
+
+ /* Enqueue the buffer */
+ to_next = vlib_frame_vector_args (f);
+ to_next[0] = bi0;
+ f->n_vectors = 1;
+ }
+
+ /* Fresh packet, construct header */
+ if (PREDICT_FALSE (offset == 0))
+ {
+ flow_report_stream_t *stream;
+
+ stream = &frm->streams[0];
+
+ b0->current_data = 0;
+ b0->current_length = sizeof (*ip) + sizeof (*udp) + sizeof (*h) +
+ sizeof (*s);
+ b0->flags |= (VLIB_BUFFER_TOTAL_LENGTH_VALID | VLIB_BUFFER_FLOW_REPORT);
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = frm->fib_index;
+
+ tp = vlib_buffer_get_current (b0);
+ ip = (ip4_header_t *) & tp->ip4;
+ udp = (udp_header_t *) (ip + 1);
+ h = (ipfix_message_header_t *) (udp + 1);
+ s = (ipfix_set_header_t *) (h + 1);
+
+ ip->ip_version_and_header_length = 0x45;
+ ip->ttl = 254;
+ ip->protocol = IP_PROTOCOL_UDP;
+ ip->src_address.as_u32 = frm->src_address.as_u32;
+ ip->dst_address.as_u32 = frm->ipfix_collector.as_u32;
+ udp->src_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix);
+ udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix);
+
+ /* FIXUP: message header export_time */
+ h->export_time = (u32)
+ (((f64) frm->unix_time_0) +
+ (vlib_time_now (frm->vlib_main) - frm->vlib_time_0));
+ h->export_time = clib_host_to_net_u32 (h->export_time);
+ h->domain_id = clib_host_to_net_u32 (stream->domain_id);
+
+ /* FIXUP: message header sequence_number */
+ h->sequence_number = stream->sequence_number++;
+ h->sequence_number = clib_host_to_net_u32 (h->sequence_number);
+
+ offset = (u32) (((u8 *) (s + 1)) - (u8 *) tp);
+ }
+
+ /* Add data, unless we're flushing stale data */
+ if (PREDICT_TRUE (do_flush == 0))
+ {
+
+ /* Add data */
+ /* Egress interface */
+ {
+ u32 egress_interface = clib_host_to_net_u32 (sw_if_index);
+ clib_memcpy (b0->data + offset, &egress_interface,
+ sizeof (egress_interface));
+ offset += sizeof (egress_interface);
+ }
+ /* ToS */
+ b0->data[offset++] = tos;
+
+ /* Timestamp */
+ clib_memcpy (b0->data + offset, ×tamp, sizeof (f64));
+ offset += sizeof (f64);
+
+ /* pkt size */
+ {
+ u16 pkt_size = clib_host_to_net_u16 (length);
+ clib_memcpy (b0->data + offset, &pkt_size, sizeof (pkt_size));
+ offset += sizeof (pkt_size);
+ }
+
+ b0->current_length +=
+ /* sw_if_index + tos + timestamp + length = 15 */
+ sizeof (u32) + sizeof (u8) + sizeof (f64) + sizeof (u16);
+
+ }
+ /* Time to flush the buffer? */
+ if (PREDICT_FALSE
+ (do_flush || (offset + sizeof (u32) + sizeof (u8)
+ + sizeof (f64)) > frm->path_mtu))
+ {
+ tp = vlib_buffer_get_current (b0);
+ ip = (ip4_header_t *) & tp->ip4;
+ udp = (udp_header_t *) (ip + 1);
+ h = (ipfix_message_header_t *) (udp + 1);
+ s = (ipfix_set_header_t *) (h + 1);
+
+ s->set_id_length = ipfix_set_id_length (256,
+ b0->current_length -
+ (sizeof (*ip) + sizeof (*udp) +
+ sizeof (*h)));
+ h->version_length = version_length (b0->current_length -
+ (sizeof (*ip) + sizeof (*udp)));
+
+ ip->length = clib_host_to_net_u16 (b0->current_length);
+
+ ip->checksum = ip4_header_checksum (ip);
+ udp->length = clib_host_to_net_u16 (b0->current_length - sizeof (*ip));
+
+ if (frm->udp_checksum)
+ {
+ /* RFC 7011 section 10.3.2. */
+ udp->checksum = ip4_tcp_udp_compute_checksum (vm, b0, ip);
+ if (udp->checksum == 0)
+ udp->checksum = 0xffff;
+ }
+
+ ASSERT (ip->checksum == ip4_header_checksum (ip));
+
+ vlib_put_frame_to_node (vm, ip4_lookup_node.index,
+ fm->frames_per_worker[my_cpu_number]);
+ fm->frames_per_worker[my_cpu_number] = 0;
+ fm->buffers_per_worker[my_cpu_number] = 0;
+ offset = 0;
+ }
+
+ fm->next_record_offset_per_worker[my_cpu_number] = offset;
+}
+
+void
+flowperpkt_flush_callback (void)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ flowperpkt_main_t *fm = &flowperpkt_main;
+
+ add_to_flow_record (vm, fm, 0 /* sw_if_index */ ,
+ 0 /* ToS */ ,
+ 0.0 /* timestamp */ ,
+ 0 /* length */ ,
+ 1 /* do_flush */ );
+}
+
+
+static uword
+flowperpkt_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ u32 n_left_from, *from, *to_next;
+ flowperpkt_next_t next_index;
+ ip4_main_t *im = &ip4_main;
+ ip_lookup_main_t *lm = &im->lookup_main;
+ ip_config_main_t *cm = &lm->feature_config_mains[VNET_IP_TX_FEAT];
+ flowperpkt_main_t *fm = &flowperpkt_main;
+ f64 now = vlib_time_now (vm);
+
+ from = vlib_frame_vector_args (frame);
+ n_left_from = frame->n_vectors;
+ next_index = node->cached_next_index;
+
+ while (n_left_from > 0)
+ {
+ u32 n_left_to_next;
+
+ vlib_get_next_frame (vm, node, next_index, to_next, n_left_to_next);
+
+ while (n_left_from >= 4 && n_left_to_next >= 2)
+ {
+ u32 next0 = FLOWPERPKT_NEXT_DROP;
+ u32 next1 = FLOWPERPKT_NEXT_DROP;
+ ip4_header_t *ip0, *ip1;
+ u16 len0, len1;
+ u32 bi0, bi1;
+ vlib_buffer_t *b0, *b1;
+
+ /* Prefetch next iteration. */
+ {
+ vlib_buffer_t *p2, *p3;
+
+ p2 = vlib_get_buffer (vm, from[2]);
+ p3 = vlib_get_buffer (vm, from[3]);
+
+ vlib_prefetch_buffer_header (p2, LOAD);
+ vlib_prefetch_buffer_header (p3, LOAD);
+
+ CLIB_PREFETCH (p2->data, CLIB_CACHE_LINE_BYTES, STORE);
+ CLIB_PREFETCH (p3->data, CLIB_CACHE_LINE_BYTES, STORE);
+ }
+
+ /* speculatively enqueue b0 and b1 to the current next frame */
+ to_next[0] = bi0 = from[0];
+ to_next[1] = bi1 = from[1];
+ from += 2;
+ to_next += 2;
+ n_left_from -= 2;
+ n_left_to_next -= 2;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ b1 = vlib_get_buffer (vm, bi1);
+
+
+ vnet_get_config_data (&cm->config_main,
+ &b0->current_config_index,
+ &next0, 0 /* sizeof config data */ );
+
+ vnet_get_config_data (&cm->config_main,
+ &b1->current_config_index,
+ &next1, 0 /* sizeof config data */ );
+
+ ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
+ vnet_buffer (b0)->ip.save_rewrite_length);
+
+ len0 = vlib_buffer_length_in_chain (vm, b0);
+
+ if (PREDICT_TRUE ((b0->flags & VLIB_BUFFER_FLOW_REPORT) == 0))
+ add_to_flow_record (vm, fm,
+ vnet_buffer (b0)->sw_if_index[VLIB_TX],
+ ip0->tos, now, len0, 0 /* flush */ );
+
+ ip1 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b1) +
+ vnet_buffer (b1)->ip.save_rewrite_length);
+ len1 = vlib_buffer_length_in_chain (vm, b1);
+
+ if (PREDICT_TRUE ((b1->flags & VLIB_BUFFER_FLOW_REPORT) == 0))
+ add_to_flow_record (vm, fm,
+ vnet_buffer (b1)->sw_if_index[VLIB_TX],
+ ip1->tos, now, len1, 0 /* flush */ );
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)))
+ {
+ if (b0->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ flowperpkt_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ t->tos = ip0->tos;
+ t->timestamp = now;
+ t->buffer_size = len0;
+
+ }
+ if (b1->flags & VLIB_BUFFER_IS_TRACED)
+ {
+ flowperpkt_trace_t *t =
+ vlib_add_trace (vm, node, b1, sizeof (*t));
+
+ t->sw_if_index = vnet_buffer (b1)->sw_if_index[VLIB_TX];
+ t->tos = ip1->tos;
+ t->timestamp = now;
+ t->buffer_size = len1;
+ }
+ }
+
+ /* verify speculative enqueues, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x2 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, bi1, next0, next1);
+ }
+
+ while (n_left_from > 0 && n_left_to_next > 0)
+ {
+ u32 bi0;
+ vlib_buffer_t *b0;
+ u32 next0 = FLOWPERPKT_NEXT_DROP;
+ ip4_header_t *ip0;
+ u16 len0;
+
+ /* speculatively enqueue b0 to the current next frame */
+ bi0 = from[0];
+ to_next[0] = bi0;
+ from += 1;
+ to_next += 1;
+ n_left_from -= 1;
+ n_left_to_next -= 1;
+
+ b0 = vlib_get_buffer (vm, bi0);
+
+ vnet_get_config_data (&cm->config_main,
+ &b0->current_config_index,
+ &next0, 0 /* sizeof config data */ );
+
+ ip0 = (ip4_header_t *) ((u8 *) vlib_buffer_get_current (b0) +
+ vnet_buffer (b0)->ip.save_rewrite_length);
+ /*
+ * egressInterface, TLV type 14, u32
+ * ipClassOfService, TLV type 5, u8
+ * flowStartNanoseconds, TLV type 156, dateTimeNanoseconds (f64)
+ * Implementation: f64 nanoseconds since VPP started
+ * dataLinkFrameSize, TLV type 312, u16
+ */
+ len0 = vlib_buffer_length_in_chain (vm, b0);
+
+ if (PREDICT_TRUE ((b0->flags & VLIB_BUFFER_FLOW_REPORT) == 0))
+ add_to_flow_record (vm, fm,
+ vnet_buffer (b0)->sw_if_index[VLIB_TX],
+ ip0->tos, now, len0, 0 /* do flush */ );
+
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ {
+ flowperpkt_trace_t *t =
+ vlib_add_trace (vm, node, b0, sizeof (*t));
+ t->sw_if_index = vnet_buffer (b0)->sw_if_index[VLIB_TX];
+ t->tos = ip0->tos;
+ t->timestamp = now;
+ t->buffer_size = len0;
+ }
+
+ /* verify speculative enqueue, maybe switch current next frame */
+ vlib_validate_buffer_enqueue_x1 (vm, node, next_index,
+ to_next, n_left_to_next,
+ bi0, next0);
+ }
+
+ vlib_put_next_frame (vm, node, next_index, n_left_to_next);
+ }
+ return frame->n_vectors;
+}
+
+/**
+ * @brief IPFIX flow-per-packet graph node
+ * @node flowperpkt
+ *
+ * This is the IPFIX flow-record-per-packet node.
+ *
+ * @param vm vlib_main_t corresponding to the current thread.
+ * @param node vlib_node_runtime_t data for this node.
+ * @param frame vlib_frame_t whose contents should be dispatched.
+ *
+ * @par Graph mechanics: buffer metadata, next index usage
+ *
+ * <em>Uses:</em>
+ * - <code>vnet_buffer(b)->ip.save_rewrite_length</code>
+ * - tells the node the length of the rewrite which was applied in
+ * ip4/6_rewrite_inline, allows the code to find the IP header without
+ * having to parse L2 headers, or make stupid assumptions about their
+ * length.
+ * - <code>vnet_buffer(b)->flags & VLIB_BUFFER_FLOW_REPORT</code>
+ * - Used to suppress flow record generation for flow record packets.
+ *
+ * <em>Sets:</em>
+ * - <code>vnet_buffer(b)->flags & VLIB_BUFFER_FLOW_REPORT</code>
+ * - To suppress flow record generation for flow record packets
+ *
+ * <em>Next Index:</em>
+ * - Next configured output feature on the interface, usually
+ * "interface-output." Generated flow records head for ip4-lookup
+ */
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (flowperpkt_node) = {
+ .function = flowperpkt_node_fn,
+ .name = "flowperpkt",
+ .vector_size = sizeof (u32),
+ .format_trace = format_flowperpkt_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+
+ .n_errors = ARRAY_LEN(flowperpkt_error_strings),
+ .error_strings = flowperpkt_error_strings,
+
+ .n_next_nodes = FLOWPERPKT_N_NEXT,
+
+ /* edit / add dispositions here */
+ .next_nodes = {
+ [FLOWPERPKT_NEXT_DROP] = "error-drop",
+ },
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
--- /dev/null
+Per-packet IPFIX flow record plugin {#flowperpkt_plugin_doc}
+===================================
+
+## Introduction
+
+This plugin generates one ipfix record entry per packet transmitted
+on interfaces which have the feature enabled
+
+## Sample configuration
+
+set ipfix exporter collector 192.168.6.2 src 192.168.6.1 template-interval 20 port 4739 path-mtu 1500
+
+flowperpkt feature add-del GigabitEthernet2/3/0
<br> VLIB_BUFFER_TOTAL_LENGTH_VALID: as it says
<br> VLIB_BUFFER_REPL_FAIL: packet replication failure
<br> VLIB_BUFFER_RECYCLE: as it says
+ <br> VLIB_BUFFER_FLOW_REPORT: buffer is a flow report,
+ set to avoid adding it to a flow report
<br> VLIB_BUFFER_FLAG_USER(n): user-defined bit N
*/
#define VLIB_BUFFER_IS_TRACED (1 << 0)
#define VLIB_BUFFER_TOTAL_LENGTH_VALID (1 << 3)
#define VLIB_BUFFER_REPL_FAIL (1 << 4)
#define VLIB_BUFFER_RECYCLE (1 << 5)
+#define VLIB_BUFFER_FLOW_REPORT (1 << 6)
/* User defined buffer flags. */
#define LOG2_VLIB_BUFFER_FLAG_USER(n) (32 - (n))
clib_memcpy (b0->data, fr->rewrite, vec_len (fr->rewrite));
b0->current_data = 0;
b0->current_length = vec_len (fr->rewrite);
- b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ b0->flags |= (VLIB_BUFFER_TOTAL_LENGTH_VALID | VLIB_BUFFER_FLOW_REPORT);
vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0;
vnet_buffer (b0)->sw_if_index[VLIB_TX] = frm->fib_index;
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