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-rw-r--r--src/plugins/flowprobe/flowprobe.api40
-rw-r--r--src/plugins/flowprobe/flowprobe.c1137
-rw-r--r--src/plugins/flowprobe/flowprobe.h174
-rw-r--r--src/plugins/flowprobe/flowprobe_all_api_h.h18
-rw-r--r--src/plugins/flowprobe/flowprobe_msg_enum.h31
-rw-r--r--src/plugins/flowprobe/flowprobe_plugin_doc.md13
-rw-r--r--src/plugins/flowprobe/flowprobe_test.c263
-rw-r--r--src/plugins/flowprobe/node.c1053
8 files changed, 2729 insertions, 0 deletions
diff --git a/src/plugins/flowprobe/flowprobe.api b/src/plugins/flowprobe/flowprobe.api
new file mode 100644
index 00000000..3f8c583b
--- /dev/null
+++ b/src/plugins/flowprobe/flowprobe.api
@@ -0,0 +1,40 @@
+/* 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 flowprobe 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
+*/
+autoreply manual_print define flowprobe_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 which; /* 0 = ipv4, 1 = l2, 2 = ipv6 */
+
+ /* Interface handle */
+ u32 sw_if_index;
+};
+
+autoreply define flowprobe_params
+{
+ u32 client_index;
+ u32 context;
+ u8 record_l2;
+ u8 record_l3;
+ u8 record_l4;
+ u32 active_timer; /* ~0 is off, 0 is default */
+ u32 passive_timer; /* ~0 is off, 0 is default */
+};
diff --git a/src/plugins/flowprobe/flowprobe.c b/src/plugins/flowprobe/flowprobe.c
new file mode 100644
index 00000000..884b5a2e
--- /dev/null
+++ b/src/plugins/flowprobe/flowprobe.c
@@ -0,0 +1,1137 @@
+/*
+ * flowprobe.c - ipfix probe plugin
+ *
+ * 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.
+ */
+
+/**
+ * @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 <vpp/app/version.h>
+#include <vnet/plugin/plugin.h>
+#include <flowprobe/flowprobe.h>
+
+#include <vlibapi/api.h>
+#include <vlibmemory/api.h>
+#include <vlibsocket/api.h>
+
+/* define message IDs */
+#include <flowprobe/flowprobe_msg_enum.h>
+
+/* define message structures */
+#define vl_typedefs
+#include <flowprobe/flowprobe_all_api_h.h>
+#undef vl_typedefs
+
+/* define generated endian-swappers */
+#define vl_endianfun
+#include <flowprobe/flowprobe_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 <flowprobe/flowprobe_all_api_h.h>
+#undef vl_printfun
+
+flowprobe_main_t flowprobe_main;
+vlib_node_registration_t flowprobe_walker_node;
+static vlib_node_registration_t flowprobe_timer_node;
+uword flowprobe_walker_process (vlib_main_t * vm, vlib_node_runtime_t * rt,
+ vlib_frame_t * f);
+
+/* Get the API version number */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <flowprobe/flowprobe_all_api_h.h>
+#undef vl_api_version
+
+#define REPLY_MSG_ID_BASE fm->msg_id_base
+#include <vlibapi/api_helper_macros.h>
+
+/* Define the per-interface configurable features */
+/* *INDENT-OFF* */
+VNET_FEATURE_INIT (flow_perpacket_ip4, static) =
+{
+ .arc_name = "ip4-output",
+ .node_name = "flowprobe-ip4",
+ .runs_before = VNET_FEATURES ("interface-output"),
+};
+
+VNET_FEATURE_INIT (flow_perpacket_ip6, static) =
+{
+ .arc_name = "ip6-output",
+ .node_name = "flowprobe-ip6",
+ .runs_before = VNET_FEATURES ("interface-output"),
+};
+
+VNET_FEATURE_INIT (flow_perpacket_l2, static) =
+{
+ .arc_name = "interface-output",
+ .node_name = "flowprobe-l2",
+ .runs_before = VNET_FEATURES ("interface-tx"),
+};
+/* *INDENT-ON* */
+
+/* Macro to finish up custom dump fns */
+#define FINISH \
+ vec_add1 (s, 0); \
+ vl_print (handle, (char *)s); \
+ vec_free (s); \
+ return handle;
+
+static inline ipfix_field_specifier_t *
+flowprobe_template_ip4_fields (ipfix_field_specifier_t * f)
+{
+#define flowprobe_template_ip4_field_count() 4
+ /* sourceIpv4Address, TLV type 8, u32 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ sourceIPv4Address, 4);
+ f++;
+ /* destinationIPv4Address, TLV type 12, u32 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ destinationIPv4Address, 4);
+ f++;
+ /* protocolIdentifier, TLV type 4, u8 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ protocolIdentifier, 1);
+ f++;
+ /* octetDeltaCount, TLV type 1, u64 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ octetDeltaCount, 8);
+ f++;
+ return f;
+}
+
+static inline ipfix_field_specifier_t *
+flowprobe_template_ip6_fields (ipfix_field_specifier_t * f)
+{
+#define flowprobe_template_ip6_field_count() 4
+ /* sourceIpv6Address, TLV type 27, 16 octets */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ sourceIPv6Address, 16);
+ f++;
+ /* destinationIPv6Address, TLV type 28, 16 octets */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ destinationIPv6Address, 16);
+ f++;
+ /* protocolIdentifier, TLV type 4, u8 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ protocolIdentifier, 1);
+ f++;
+ /* octetDeltaCount, TLV type 1, u64 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ octetDeltaCount, 8);
+ f++;
+ return f;
+}
+
+static inline ipfix_field_specifier_t *
+flowprobe_template_l2_fields (ipfix_field_specifier_t * f)
+{
+#define flowprobe_template_l2_field_count() 3
+ /* sourceMacAddress, TLV type 56, u8[6] we hope */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ sourceMacAddress, 6);
+ f++;
+ /* destinationMacAddress, TLV type 80, u8[6] we hope */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ destinationMacAddress, 6);
+ f++;
+ /* ethernetType, TLV type 256, u16 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ ethernetType, 2);
+ f++;
+ return f;
+}
+
+static inline ipfix_field_specifier_t *
+flowprobe_template_common_fields (ipfix_field_specifier_t * f)
+{
+#define flowprobe_template_common_field_count() 5
+ /* ingressInterface, TLV type 10, u32 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ ingressInterface, 4);
+ f++;
+
+ /* egressInterface, TLV type 14, u32 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ egressInterface, 4);
+ f++;
+
+ /* packetDeltaCount, TLV type 2, u64 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ packetDeltaCount, 8);
+ f++;
+
+ /* flowStartNanoseconds, TLV type 156, u64 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ flowStartNanoseconds, 8);
+ f++;
+
+ /* flowEndNanoseconds, TLV type 157, u64 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ flowEndNanoseconds, 8);
+ f++;
+
+ return f;
+}
+
+static inline ipfix_field_specifier_t *
+flowprobe_template_l4_fields (ipfix_field_specifier_t * f)
+{
+#define flowprobe_template_l4_field_count() 3
+ /* sourceTransportPort, TLV type 7, u16 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ sourceTransportPort, 2);
+ f++;
+ /* destinationTransportPort, TLV type 11, u16 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ destinationTransportPort, 2);
+ f++;
+ /* tcpControlBits, TLV type 6, u16 */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ tcpControlBits, 2);
+ f++;
+
+ return f;
+}
+
+/**
+ * @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
+ */
+static inline u8 *
+flowprobe_template_rewrite_inline (flow_report_main_t * frm,
+ flow_report_t * fr,
+ ip4_address_t * collector_address,
+ ip4_address_t * src_address,
+ u16 collector_port,
+ flowprobe_variant_t which)
+{
+ 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;
+ flowprobe_main_t *fm = &flowprobe_main;
+ flowprobe_record_t flags = fr->opaque.as_uword;
+ bool collect_ip4 = false, collect_ip6 = false;
+
+ stream = &frm->streams[fr->stream_index];
+
+ if (flags & FLOW_RECORD_L3)
+ {
+ collect_ip4 = which == FLOW_VARIANT_L2_IP4 || which == FLOW_VARIANT_IP4;
+ collect_ip6 = which == FLOW_VARIANT_L2_IP6 || which == FLOW_VARIANT_IP6;
+ if (which == FLOW_VARIANT_L2_IP4)
+ flags |= FLOW_RECORD_L2_IP4;
+ if (which == FLOW_VARIANT_L2_IP6)
+ flags |= FLOW_RECORD_L2_IP6;
+ }
+
+ field_count += flowprobe_template_common_field_count ();
+ if (flags & FLOW_RECORD_L2)
+ field_count += flowprobe_template_l2_field_count ();
+ if (collect_ip4)
+ field_count += flowprobe_template_ip4_field_count ();
+ if (collect_ip6)
+ field_count += flowprobe_template_ip6_field_count ();
+ if (flags & FLOW_RECORD_L4)
+ field_count += flowprobe_template_l4_field_count ();
+
+ /* 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 = flowprobe_template_common_fields (f);
+
+ if (flags & FLOW_RECORD_L2)
+ f = flowprobe_template_l2_fields (f);
+ if (collect_ip4)
+ f = flowprobe_template_ip4_fields (f);
+ if (collect_ip6)
+ f = flowprobe_template_ip6_fields (f);
+ if (flags & FLOW_RECORD_L4)
+ f = flowprobe_template_l4_fields (f);
+
+ /* 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);
+
+ fm->template_size[flags] = (u8 *) f - (u8 *) s;
+
+ /* 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;
+}
+
+static u8 *
+flowprobe_template_rewrite_ip6 (flow_report_main_t * frm,
+ flow_report_t * fr,
+ ip4_address_t * collector_address,
+ ip4_address_t * src_address,
+ u16 collector_port)
+{
+ return flowprobe_template_rewrite_inline
+ (frm, fr, collector_address, src_address, collector_port,
+ FLOW_VARIANT_IP6);
+}
+
+static u8 *
+flowprobe_template_rewrite_ip4 (flow_report_main_t * frm,
+ flow_report_t * fr,
+ ip4_address_t * collector_address,
+ ip4_address_t * src_address,
+ u16 collector_port)
+{
+ return flowprobe_template_rewrite_inline
+ (frm, fr, collector_address, src_address, collector_port,
+ FLOW_VARIANT_IP4);
+}
+
+static u8 *
+flowprobe_template_rewrite_l2 (flow_report_main_t * frm,
+ flow_report_t * fr,
+ ip4_address_t * collector_address,
+ ip4_address_t * src_address,
+ u16 collector_port)
+{
+ return flowprobe_template_rewrite_inline
+ (frm, fr, collector_address, src_address, collector_port,
+ FLOW_VARIANT_L2);
+}
+
+static u8 *
+flowprobe_template_rewrite_l2_ip4 (flow_report_main_t * frm,
+ flow_report_t * fr,
+ ip4_address_t * collector_address,
+ ip4_address_t * src_address,
+ u16 collector_port)
+{
+ return flowprobe_template_rewrite_inline
+ (frm, fr, collector_address, src_address, collector_port,
+ FLOW_VARIANT_L2_IP4);
+}
+
+static u8 *
+flowprobe_template_rewrite_l2_ip6 (flow_report_main_t * frm,
+ flow_report_t * fr,
+ ip4_address_t * collector_address,
+ ip4_address_t * src_address,
+ u16 collector_port)
+{
+ return flowprobe_template_rewrite_inline
+ (frm, fr, collector_address, src_address, collector_port,
+ FLOW_VARIANT_L2_IP6);
+}
+
+/**
+ * @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 *
+flowprobe_data_callback_ip4 (flow_report_main_t * frm,
+ flow_report_t * fr,
+ vlib_frame_t * f, u32 * to_next, u32 node_index)
+{
+ flowprobe_flush_callback_ip4 ();
+ return f;
+}
+
+vlib_frame_t *
+flowprobe_data_callback_ip6 (flow_report_main_t * frm,
+ flow_report_t * fr,
+ vlib_frame_t * f, u32 * to_next, u32 node_index)
+{
+ flowprobe_flush_callback_ip6 ();
+ return f;
+}
+
+vlib_frame_t *
+flowprobe_data_callback_l2 (flow_report_main_t * frm,
+ flow_report_t * fr,
+ vlib_frame_t * f, u32 * to_next, u32 node_index)
+{
+ flowprobe_flush_callback_l2 ();
+ return f;
+}
+
+static int
+flowprobe_template_add_del (u32 domain_id, u16 src_port,
+ flowprobe_record_t flags,
+ vnet_flow_data_callback_t * flow_data_callback,
+ vnet_flow_rewrite_callback_t * rewrite_callback,
+ bool is_add, u16 * template_id)
+{
+ flow_report_main_t *frm = &flow_report_main;
+ vnet_flow_report_add_del_args_t a = {
+ .rewrite_callback = rewrite_callback,
+ .flow_data_callback = flow_data_callback,
+ .is_add = is_add,
+ .domain_id = domain_id,
+ .src_port = src_port,
+ .opaque.as_uword = flags,
+ };
+ return vnet_flow_report_add_del (frm, &a, template_id);
+}
+
+static void
+flowprobe_expired_timer_callback (u32 * expired_timers)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ flowprobe_main_t *fm = &flowprobe_main;
+ u32 my_cpu_number = vm->thread_index;
+ int i;
+ u32 poolindex;
+
+ for (i = 0; i < vec_len (expired_timers); i++)
+ {
+ poolindex = expired_timers[i] & 0x7FFFFFFF;
+ vec_add1 (fm->expired_passive_per_worker[my_cpu_number], poolindex);
+ }
+}
+
+static clib_error_t *
+flowprobe_create_state_tables (u32 active_timer)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ vlib_thread_main_t *tm = &vlib_thread_main;
+ vlib_main_t *vm = vlib_get_main ();
+ clib_error_t *error = 0;
+ u32 num_threads;
+ int i;
+
+ /* Decide how many worker threads we have */
+ num_threads = 1 /* main thread */ + tm->n_threads;
+
+ /* Hash table per worker */
+ fm->ht_log2len = FLOWPROBE_LOG2_HASHSIZE;
+
+ /* Init per worker flow state and timer wheels */
+ if (active_timer)
+ {
+ vec_validate (fm->timers_per_worker, num_threads - 1);
+ vec_validate (fm->expired_passive_per_worker, num_threads - 1);
+ vec_validate (fm->hash_per_worker, num_threads - 1);
+ vec_validate (fm->pool_per_worker, num_threads - 1);
+
+ for (i = 0; i < num_threads; i++)
+ {
+ int j;
+ pool_alloc (fm->pool_per_worker[i], 1 << fm->ht_log2len);
+ vec_resize (fm->hash_per_worker[i], 1 << fm->ht_log2len);
+ for (j = 0; j < (1 << fm->ht_log2len); j++)
+ fm->hash_per_worker[i][j] = ~0;
+ fm->timers_per_worker[i] =
+ clib_mem_alloc (sizeof (TWT (tw_timer_wheel)));
+ tw_timer_wheel_init_2t_1w_2048sl (fm->timers_per_worker[i],
+ flowprobe_expired_timer_callback,
+ 1.0, 1024);
+ }
+ fm->disabled = true;
+ }
+ else
+ {
+ f64 now = vlib_time_now (vm);
+ vec_validate (fm->stateless_entry, num_threads - 1);
+ for (i = 0; i < num_threads; i++)
+ fm->stateless_entry[i].last_exported = now;
+ fm->disabled = false;
+ }
+ fm->initialized = true;
+ return error;
+}
+
+static int
+validate_feature_on_interface (flowprobe_main_t * fm, u32 sw_if_index,
+ u8 which)
+{
+ vec_validate_init_empty (fm->flow_per_interface, sw_if_index, ~0);
+
+ if (fm->flow_per_interface[sw_if_index] == (u8) ~ 0)
+ return -1;
+ else if (fm->flow_per_interface[sw_if_index] != which)
+ return 0;
+ else
+ return 1;
+}
+
+/**
+ * @brief configure / deconfigure the IPFIX flow-per-packet
+ * @param fm flowprobe_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
+flowprobe_tx_interface_add_del_feature (flowprobe_main_t * fm,
+ u32 sw_if_index, u8 which, int is_add)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ int rv = 0;
+ u16 template_id = 0;
+ flowprobe_record_t flags = fm->record;
+
+ fm->flow_per_interface[sw_if_index] = (is_add) ? which : (u8) ~ 0;
+ fm->template_per_flow[which] += (is_add) ? 1 : -1;
+ if (is_add && fm->template_per_flow[which] > 1)
+ template_id = fm->template_reports[flags];
+
+ if ((is_add && fm->template_per_flow[which] == 1) ||
+ (!is_add && fm->template_per_flow[which] == 0))
+ {
+ if (which == FLOW_VARIANT_L2)
+ {
+ if (fm->record & FLOW_RECORD_L2)
+ {
+ rv = flowprobe_template_add_del (1, UDP_DST_PORT_ipfix, flags,
+ flowprobe_data_callback_l2,
+ flowprobe_template_rewrite_l2,
+ is_add, &template_id);
+ }
+ if (fm->record & FLOW_RECORD_L3 || fm->record & FLOW_RECORD_L4)
+ {
+ rv = flowprobe_template_add_del (1, UDP_DST_PORT_ipfix, flags,
+ flowprobe_data_callback_l2,
+ flowprobe_template_rewrite_l2_ip4,
+ is_add, &template_id);
+ fm->template_reports[flags | FLOW_RECORD_L2_IP4] =
+ (is_add) ? template_id : 0;
+ rv =
+ flowprobe_template_add_del (1, UDP_DST_PORT_ipfix, flags,
+ flowprobe_data_callback_l2,
+ flowprobe_template_rewrite_l2_ip6,
+ is_add, &template_id);
+ fm->template_reports[flags | FLOW_RECORD_L2_IP6] =
+ (is_add) ? template_id : 0;
+
+ /* Special case L2 */
+ fm->context[FLOW_VARIANT_L2_IP4].flags =
+ flags | FLOW_RECORD_L2_IP4;
+ fm->context[FLOW_VARIANT_L2_IP6].flags =
+ flags | FLOW_RECORD_L2_IP6;
+
+ fm->template_reports[flags] = template_id;
+ }
+ }
+ else if (which == FLOW_VARIANT_IP4)
+ rv = flowprobe_template_add_del (1, UDP_DST_PORT_ipfix, flags,
+ flowprobe_data_callback_ip4,
+ flowprobe_template_rewrite_ip4,
+ is_add, &template_id);
+ else if (which == FLOW_VARIANT_IP6)
+ rv = flowprobe_template_add_del (1, UDP_DST_PORT_ipfix, flags,
+ flowprobe_data_callback_ip6,
+ flowprobe_template_rewrite_ip6,
+ is_add, &template_id);
+ }
+ if (rv && rv != VNET_API_ERROR_VALUE_EXIST)
+ {
+ clib_warning ("vnet_flow_report_add_del returned %d", rv);
+ return -1;
+ }
+
+ if (which != (u8) ~ 0)
+ {
+ fm->context[which].flags = fm->record;
+ fm->template_reports[flags] = (is_add) ? template_id : 0;
+ }
+
+ if (which == FLOW_VARIANT_IP4)
+ vnet_feature_enable_disable ("ip4-output", "flowprobe-ip4",
+ sw_if_index, is_add, 0, 0);
+ else if (which == FLOW_VARIANT_IP6)
+ vnet_feature_enable_disable ("ip6-output", "flowprobe-ip6",
+ sw_if_index, is_add, 0, 0);
+ else if (which == FLOW_VARIANT_L2)
+ vnet_feature_enable_disable ("interface-output", "flowprobe-l2",
+ sw_if_index, is_add, 0, 0);
+
+ /* Stateful flow collection */
+ if (is_add && !fm->initialized)
+ {
+ flowprobe_create_state_tables (fm->active_timer);
+ if (fm->active_timer)
+ vlib_process_signal_event (vm, flowprobe_timer_node.index, 1, 0);
+ }
+
+ return 0;
+}
+
+/**
+ * @brief API message handler
+ * @param mp vl_api_flowprobe_tx_interface_add_del_t * mp the api message
+ */
+void vl_api_flowprobe_tx_interface_add_del_t_handler
+ (vl_api_flowprobe_tx_interface_add_del_t * mp)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ vl_api_flowprobe_tx_interface_add_del_reply_t *rmp;
+ u32 sw_if_index = ntohl (mp->sw_if_index);
+ int rv = 0;
+
+ VALIDATE_SW_IF_INDEX (mp);
+
+ if (mp->which != FLOW_VARIANT_IP4 && mp->which != FLOW_VARIANT_L2
+ && mp->which != FLOW_VARIANT_IP6)
+ {
+ rv = VNET_API_ERROR_UNIMPLEMENTED;
+ goto out;
+ }
+
+ if (fm->record == 0)
+ {
+ clib_warning ("Please specify flowprobe params record first...");
+ rv = VNET_API_ERROR_CANNOT_ENABLE_DISABLE_FEATURE;
+ goto out;
+ }
+
+ rv = validate_feature_on_interface (fm, sw_if_index, mp->which);
+ if ((rv == 1 && mp->is_add == 1) || rv == 0)
+ {
+ rv = VNET_API_ERROR_CANNOT_ENABLE_DISABLE_FEATURE;
+ goto out;
+ }
+
+ rv = flowprobe_tx_interface_add_del_feature
+ (fm, sw_if_index, mp->which, mp->is_add);
+
+out:
+ BAD_SW_IF_INDEX_LABEL;
+
+ REPLY_MACRO (VL_API_FLOWPROBE_TX_INTERFACE_ADD_DEL_REPLY);
+}
+
+/**
+ * @brief API message custom-dump function
+ * @param mp vl_api_flowprobe_tx_interface_add_del_t * mp the api message
+ * @param handle void * print function handle
+ * @returns u8 * output string
+ */
+static void *vl_api_flowprobe_tx_interface_add_del_t_print
+ (vl_api_flowprobe_tx_interface_add_del_t * mp, void *handle)
+{
+ u8 *s;
+
+ s = format (0, "SCRIPT: flowprobe_tx_interface_add_del ");
+ s = format (s, "sw_if_index %d is_add %d which %d ",
+ clib_host_to_net_u32 (mp->sw_if_index),
+ (int) mp->is_add, (int) mp->which);
+ FINISH;
+}
+
+#define vec_neg_search(v,E) \
+({ \
+ word _v(i) = 0; \
+ while (_v(i) < vec_len(v) && v[_v(i)] == E) \
+ { \
+ _v(i)++; \
+ } \
+ if (_v(i) == vec_len(v)) \
+ _v(i) = ~0; \
+ _v(i); \
+})
+
+static int
+flowprobe_params (flowprobe_main_t * fm, u8 record_l2,
+ u8 record_l3, u8 record_l4,
+ u32 active_timer, u32 passive_timer)
+{
+ flowprobe_record_t flags = 0;
+
+ if (vec_neg_search (fm->flow_per_interface, (u8) ~ 0) != ~0)
+ return ~0;
+
+ if (record_l2)
+ flags |= FLOW_RECORD_L2;
+ if (record_l3)
+ flags |= FLOW_RECORD_L3;
+ if (record_l4)
+ flags |= FLOW_RECORD_L4;
+
+ fm->record = flags;
+
+ /*
+ * Timers: ~0 is default, 0 is off
+ */
+ fm->active_timer =
+ (active_timer == (u32) ~ 0 ? FLOWPROBE_TIMER_ACTIVE : active_timer);
+ fm->passive_timer =
+ (passive_timer == (u32) ~ 0 ? FLOWPROBE_TIMER_PASSIVE : passive_timer);
+
+ return 0;
+}
+
+void
+vl_api_flowprobe_params_t_handler (vl_api_flowprobe_params_t * mp)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ vl_api_flowprobe_params_reply_t *rmp;
+ int rv = 0;
+
+ rv = flowprobe_params
+ (fm, mp->record_l2, mp->record_l3, mp->record_l4,
+ clib_net_to_host_u32 (mp->active_timer),
+ clib_net_to_host_u32 (mp->passive_timer));
+
+ REPLY_MACRO (VL_API_FLOWPROBE_PARAMS_REPLY);
+}
+
+/* List of message types that this plugin understands */
+#define foreach_flowprobe_plugin_api_msg \
+_(FLOWPROBE_TX_INTERFACE_ADD_DEL, flowprobe_tx_interface_add_del) \
+_(FLOWPROBE_PARAMS, flowprobe_params)
+
+/* *INDENT-OFF* */
+VLIB_PLUGIN_REGISTER () = {
+ .version = VPP_BUILD_VER,
+ .description = "Flow per Packet",
+};
+/* *INDENT-ON* */
+
+u8 *
+format_flowprobe_entry (u8 * s, va_list * args)
+{
+ flowprobe_entry_t *e = va_arg (*args, flowprobe_entry_t *);
+ s = format (s, " %d/%d", e->key.rx_sw_if_index, e->key.tx_sw_if_index);
+
+ s = format (s, " %U %U", format_ethernet_address, &e->key.src_mac,
+ format_ethernet_address, &e->key.dst_mac);
+ s = format (s, " %U -> %U",
+ format_ip46_address, &e->key.src_address, IP46_TYPE_ANY,
+ format_ip46_address, &e->key.dst_address, IP46_TYPE_ANY);
+ s = format (s, " %d", e->key.protocol);
+ s = format (s, " %d %d\n", clib_net_to_host_u16 (e->key.src_port),
+ clib_net_to_host_u16 (e->key.dst_port));
+
+ return s;
+}
+
+static clib_error_t *
+flowprobe_show_table_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cm)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ int i;
+ flowprobe_entry_t *e;
+
+ vlib_cli_output (vm, "Dumping IPFIX table");
+
+ for (i = 0; i < vec_len (fm->pool_per_worker); i++)
+ {
+ /* *INDENT-OFF* */
+ pool_foreach (e, fm->pool_per_worker[i], (
+ {
+ vlib_cli_output (vm, "%U",
+ format_flowprobe_entry,
+ e);
+ }));
+ /* *INDENT-ON* */
+
+ }
+ return 0;
+}
+
+static clib_error_t *
+flowprobe_show_stats_fn (vlib_main_t * vm,
+ unformat_input_t * input, vlib_cli_command_t * cm)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ int i;
+
+ vlib_cli_output (vm, "IPFIX table statistics");
+ vlib_cli_output (vm, "Flow entry size: %d\n", sizeof (flowprobe_entry_t));
+ vlib_cli_output (vm, "Flow pool size per thread: %d\n",
+ 0x1 << FLOWPROBE_LOG2_HASHSIZE);
+
+ for (i = 0; i < vec_len (fm->pool_per_worker); i++)
+ vlib_cli_output (vm, "Pool utilisation thread %d is %d%%\n", i,
+ (100 * pool_elts (fm->pool_per_worker[i])) /
+ (0x1 << FLOWPROBE_LOG2_HASHSIZE));
+ return 0;
+}
+
+static clib_error_t *
+flowprobe_tx_interface_add_del_feature_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ u32 sw_if_index = ~0;
+ int is_add = 1;
+ u8 which = FLOW_VARIANT_IP4;
+ 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 if (unformat (input, "ip4"))
+ which = FLOW_VARIANT_IP4;
+ else if (unformat (input, "ip6"))
+ which = FLOW_VARIANT_IP6;
+ else if (unformat (input, "l2"))
+ which = FLOW_VARIANT_L2;
+ else
+ break;
+ }
+
+ if (fm->record == 0)
+ return clib_error_return (0,
+ "Please specify flowprobe params record first...");
+
+ if (sw_if_index == ~0)
+ return clib_error_return (0, "Please specify an interface...");
+
+ rv = validate_feature_on_interface (fm, sw_if_index, which);
+ if (rv == 1)
+ {
+ if (is_add)
+ return clib_error_return (0,
+ "Datapath is already enabled for given interface...");
+ }
+ else if (rv == 0)
+ return clib_error_return (0,
+ "Interface has enable different datapath ...");
+
+ rv =
+ flowprobe_tx_interface_add_del_feature (fm, sw_if_index, which, 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, "flowprobe_enable_disable returned %d",
+ rv);
+ }
+ return 0;
+}
+
+static clib_error_t *
+flowprobe_params_command_fn (vlib_main_t * vm,
+ unformat_input_t * input,
+ vlib_cli_command_t * cmd)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ bool record_l2 = false, record_l3 = false, record_l4 = false;
+ u32 active_timer = ~0;
+ u32 passive_timer = ~0;
+
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "active %d", &active_timer))
+ ;
+ else if (unformat (input, "passive %d", &passive_timer))
+ ;
+ else if (unformat (input, "record"))
+ while (unformat_check_input (input) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (input, "l2"))
+ record_l2 = true;
+ else if (unformat (input, "l3"))
+ record_l3 = true;
+ else if (unformat (input, "l4"))
+ record_l4 = true;
+ else
+ break;
+ }
+ else
+ break;
+ }
+
+ if (passive_timer > 0 && active_timer > passive_timer)
+ return clib_error_return (0,
+ "Passive timer has to be greater than active one...");
+
+ if (flowprobe_params (fm, record_l2, record_l3, record_l4,
+ active_timer, passive_timer))
+ return clib_error_return (0,
+ "Couldn't change flowperpacket params when feature is enabled on some interface ...");
+ return 0;
+}
+
+/*?
+ * '<em>flowprobe 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{flowprobe feature add-del GigabitEthernet2/0/0}
+ *
+ * To disable per-packet IPFIX flow-record generation on an interface:
+ * @cliexcmd{flowprobe feature add-del GigabitEthernet2/0/0 disable}
+ * @cliexend
+ * @endparblock
+?*/
+/* *INDENT-OFF* */
+VLIB_CLI_COMMAND (flowprobe_enable_disable_command, static) = {
+ .path = "flowprobe feature add-del",
+ .short_help =
+ "flowprobe feature add-del <interface-name> <l2|ip4|ip6> disable",
+ .function = flowprobe_tx_interface_add_del_feature_command_fn,
+};
+VLIB_CLI_COMMAND (flowprobe_params_command, static) = {
+ .path = "flowprobe params",
+ .short_help =
+ "flowprobe params record <[l2] [l3] [l4]> [active <timer> passive <timer>]",
+ .function = flowprobe_params_command_fn,
+};
+VLIB_CLI_COMMAND (flowprobe_show_table_command, static) = {
+ .path = "show flowprobe table",
+ .short_help = "show flowprobe table",
+ .function = flowprobe_show_table_fn,
+};
+VLIB_CLI_COMMAND (flowprobe_show_stats_command, static) = {
+ .path = "show flowprobe statistics",
+ .short_help = "show flowprobe statistics",
+ .function = flowprobe_show_stats_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 *
+flowprobe_plugin_api_hookup (vlib_main_t * vm)
+{
+ flowprobe_main_t *fm = &flowprobe_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_flowprobe_plugin_api_msg;
+#undef _
+
+ return 0;
+}
+
+#define vl_msg_name_crc_list
+#include <flowprobe/flowprobe_all_api_h.h>
+#undef vl_msg_name_crc_list
+
+static void
+setup_message_id_table (flowprobe_main_t * fm, api_main_t * am)
+{
+#define _(id,n,crc) \
+ vl_msg_api_add_msg_name_crc (am, #n "_" #crc, id + fm->msg_id_base);
+ foreach_vl_msg_name_crc_flowprobe;
+#undef _
+}
+
+/*
+ * Main-core process, sending an interrupt to the per worker input
+ * process that spins the per worker timer wheel.
+ */
+static uword
+timer_process (vlib_main_t * vm, vlib_node_runtime_t * rt, vlib_frame_t * f)
+{
+ uword *event_data = 0;
+ vlib_main_t **worker_vms = 0, *worker_vm;
+ flowprobe_main_t *fm = &flowprobe_main;
+
+ /* Wait for Godot... */
+ vlib_process_wait_for_event_or_clock (vm, 1e9);
+ uword event_type = vlib_process_get_events (vm, &event_data);
+ if (event_type != 1)
+ clib_warning ("bogus kickoff event received, %d", event_type);
+ vec_reset_length (event_data);
+
+ int i;
+ if (vec_len (vlib_mains) == 0)
+ vec_add1 (worker_vms, vm);
+ else
+ {
+ for (i = 0; i < vec_len (vlib_mains); i++)
+ {
+ worker_vm = vlib_mains[i];
+ if (worker_vm)
+ vec_add1 (worker_vms, worker_vm);
+ }
+ }
+ f64 sleep_duration = 0.1;
+
+ while (1)
+ {
+ /* Send an interrupt to each timer input node */
+ sleep_duration = 0.1;
+ for (i = 0; i < vec_len (worker_vms); i++)
+ {
+ worker_vm = worker_vms[i];
+ if (worker_vm)
+ {
+ vlib_node_set_interrupt_pending (worker_vm,
+ flowprobe_walker_node.index);
+ sleep_duration =
+ (fm->expired_passive_per_worker[i] > 0) ? 1e-4 : 0.1;
+ }
+ }
+ vlib_process_suspend (vm, sleep_duration);
+ }
+ return 0; /* or not */
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (flowprobe_timer_node,static) = {
+ .function = timer_process,
+ .name = "flowprobe-timer-process",
+ .type = VLIB_NODE_TYPE_PROCESS,
+};
+/* *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, or a clib_error_t
+ */
+static clib_error_t *
+flowprobe_init (vlib_main_t * vm)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ vlib_thread_main_t *tm = &vlib_thread_main;
+ clib_error_t *error = 0;
+ u8 *name;
+ u32 num_threads;
+ int i;
+
+ fm->vnet_main = vnet_get_main ();
+
+ /* Construct the API name */
+ name = format (0, "flowprobe_%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 = flowprobe_plugin_api_hookup (vm);
+
+ /* Add our API messages to the global name_crc hash table */
+ setup_message_id_table (fm, &api_main);
+
+ vec_free (name);
+
+ /* Set up time reference pair */
+ fm->vlib_time_0 = vlib_time_now (vm);
+ fm->nanosecond_time_0 = unix_time_now_nsec ();
+
+ memset (fm->template_reports, 0, sizeof (fm->template_reports));
+ memset (fm->template_size, 0, sizeof (fm->template_size));
+ memset (fm->template_per_flow, 0, sizeof (fm->template_per_flow));
+
+ /* Decide how many worker threads we have */
+ num_threads = 1 /* main thread */ + tm->n_threads;
+
+ /* Allocate per worker thread vectors per flavour */
+ for (i = 0; i < FLOW_N_VARIANTS; i++)
+ {
+ vec_validate (fm->context[i].buffers_per_worker, num_threads - 1);
+ vec_validate (fm->context[i].frames_per_worker, num_threads - 1);
+ vec_validate (fm->context[i].next_record_offset_per_worker,
+ num_threads - 1);
+ }
+
+ fm->active_timer = FLOWPROBE_TIMER_ACTIVE;
+ fm->passive_timer = FLOWPROBE_TIMER_PASSIVE;
+
+ return error;
+}
+
+VLIB_INIT_FUNCTION (flowprobe_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/flowprobe/flowprobe.h b/src/plugins/flowprobe/flowprobe.h
new file mode 100644
index 00000000..02ee053c
--- /dev/null
+++ b/src/plugins/flowprobe/flowprobe.h
@@ -0,0 +1,174 @@
+/*
+ * flowprobe.h - ipfix probe plug-in header file
+ *
+ * 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.
+ */
+#ifndef __included_flowprobe_h__
+#define __included_flowprobe_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>
+#include <vppinfra/tw_timer_2t_1w_2048sl.h>
+
+/* Default timers in seconds */
+#define FLOWPROBE_TIMER_ACTIVE (15)
+#define FLOWPROBE_TIMER_PASSIVE 120 // XXXX: FOR TESTING (30*60)
+#define FLOWPROBE_LOG2_HASHSIZE (18)
+
+typedef enum
+{
+ FLOW_RECORD_L2 = 1 << 0,
+ FLOW_RECORD_L3 = 1 << 1,
+ FLOW_RECORD_L4 = 1 << 2,
+ FLOW_RECORD_L2_IP4 = 1 << 3,
+ FLOW_RECORD_L2_IP6 = 1 << 4,
+ FLOW_N_RECORDS = 1 << 5,
+} flowprobe_record_t;
+
+/* *INDENT-OFF* */
+typedef enum __attribute__ ((__packed__))
+{
+ FLOW_VARIANT_IP4,
+ FLOW_VARIANT_IP6,
+ FLOW_VARIANT_L2,
+ FLOW_VARIANT_L2_IP4,
+ FLOW_VARIANT_L2_IP6,
+ FLOW_N_VARIANTS,
+} flowprobe_variant_t;
+/* *INDENT-ON* */
+
+STATIC_ASSERT (sizeof (flowprobe_variant_t) == 1,
+ "flowprobe_variant_t is expected to be 1 byte, "
+ "revisit padding in flowprobe_key_t");
+
+#define FLOW_MAXIMUM_EXPORT_ENTRIES (1024)
+
+typedef struct
+{
+ /* what to collect per variant */
+ flowprobe_record_t flags;
+ /** 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;
+} flowprobe_protocol_context_t;
+
+/* *INDENT-OFF* */
+typedef struct __attribute__ ((aligned (8))) {
+ u32 rx_sw_if_index;
+ u32 tx_sw_if_index;
+ u8 src_mac[6];
+ u8 dst_mac[6];
+ u16 ethertype;
+ ip46_address_t src_address;
+ ip46_address_t dst_address;
+ u8 protocol;
+ u16 src_port;
+ u16 dst_port;
+ flowprobe_variant_t which;
+} flowprobe_key_t;
+/* *INDENT-ON* */
+
+typedef struct
+{
+ u32 sec;
+ u32 nsec;
+} timestamp_nsec_t;
+
+typedef struct
+{
+ flowprobe_key_t key;
+ u64 packetcount;
+ u64 octetcount;
+ timestamp_nsec_t flow_start;
+ timestamp_nsec_t flow_end;
+ f64 last_updated;
+ f64 last_exported;
+ u32 passive_timer_handle;
+ union
+ {
+ struct
+ {
+ u16 flags;
+ } tcp;
+ } prot;
+} flowprobe_entry_t;
+
+/**
+ * @file
+ * @brief flow-per-packet plugin header file
+ */
+typedef struct
+{
+ /** API message ID base */
+ u16 msg_id_base;
+
+ flowprobe_protocol_context_t context[FLOW_N_VARIANTS];
+ u16 template_reports[FLOW_N_RECORDS];
+ u16 template_size[FLOW_N_RECORDS];
+
+ /** Time reference pair */
+ u64 nanosecond_time_0;
+ f64 vlib_time_0;
+
+ /** Per CPU flow-state */
+ u8 ht_log2len; /* Hash table size is 2^log2len */
+ u32 **hash_per_worker;
+ flowprobe_entry_t **pool_per_worker;
+ /* *INDENT-OFF* */
+ TWT (tw_timer_wheel) ** timers_per_worker;
+ /* *INDENT-ON* */
+ u32 **expired_passive_per_worker;
+
+ flowprobe_record_t record;
+ u32 active_timer;
+ u32 passive_timer;
+ flowprobe_entry_t *stateless_entry;
+
+ bool initialized;
+ bool disabled;
+
+ u16 template_per_flow[FLOW_N_VARIANTS];
+ u8 *flow_per_interface;
+
+ /** convenience vlib_main_t pointer */
+ vlib_main_t *vlib_main;
+ /** convenience vnet_main_t pointer */
+ vnet_main_t *vnet_main;
+} flowprobe_main_t;
+
+extern flowprobe_main_t flowprobe_main;
+
+void flowprobe_flush_callback_ip4 (void);
+void flowprobe_flush_callback_ip6 (void);
+void flowprobe_flush_callback_l2 (void);
+u8 *format_flowprobe_entry (u8 * s, va_list * args);
+
+#endif
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/flowprobe/flowprobe_all_api_h.h b/src/plugins/flowprobe/flowprobe_all_api_h.h
new file mode 100644
index 00000000..1f30eccc
--- /dev/null
+++ b/src/plugins/flowprobe/flowprobe_all_api_h.h
@@ -0,0 +1,18 @@
+/*
+ * flowprobe_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 <flowprobe/flowprobe.api.h>
diff --git a/src/plugins/flowprobe/flowprobe_msg_enum.h b/src/plugins/flowprobe/flowprobe_msg_enum.h
new file mode 100644
index 00000000..bc0b21c9
--- /dev/null
+++ b/src/plugins/flowprobe/flowprobe_msg_enum.h
@@ -0,0 +1,31 @@
+/*
+ * flowprobe_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_flowprobe_msg_enum_h
+#define included_flowprobe_msg_enum_h
+
+#include <vppinfra/byte_order.h>
+
+#define vl_msg_id(n,h) n,
+typedef enum
+{
+#include <flowprobe/flowprobe_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_flowprobe_msg_enum_h */
diff --git a/src/plugins/flowprobe/flowprobe_plugin_doc.md b/src/plugins/flowprobe/flowprobe_plugin_doc.md
new file mode 100644
index 00000000..4c9b2342
--- /dev/null
+++ b/src/plugins/flowprobe/flowprobe_plugin_doc.md
@@ -0,0 +1,13 @@
+IPFIX flow record plugin {#flowprobe_plugin_doc}
+========================
+
+## Introduction
+
+This plugin generates ipfix flow records 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
+
+flowprobe params record l3 active 20 passive 120
+flowprobe feature add-del GigabitEthernet2/3/0 l2 \ No newline at end of file
diff --git a/src/plugins/flowprobe/flowprobe_test.c b/src/plugins/flowprobe/flowprobe_test.c
new file mode 100644
index 00000000..91793f55
--- /dev/null
+++ b/src/plugins/flowprobe/flowprobe_test.c
@@ -0,0 +1,263 @@
+/*
+ * flowprobe.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>
+#include <flowprobe/flowprobe.h>
+
+#define __plugin_msg_base flowprobe_test_main.msg_id_base
+#include <vlibapi/vat_helper_macros.h>
+
+/**
+ * @file vpp_api_test plugin
+ */
+
+uword unformat_sw_if_index (unformat_input_t * input, va_list * args);
+
+/* Declare message IDs */
+#include <flowprobe/flowprobe_msg_enum.h>
+
+/* define message structures */
+#define vl_typedefs
+#include <flowprobe/flowprobe_all_api_h.h>
+#undef vl_typedefs
+
+/* declare message handlers for each api */
+
+#define vl_endianfun /* define message structures */
+#include <flowprobe/flowprobe_all_api_h.h>
+#undef vl_endianfun
+
+/* instantiate all the print functions we know about */
+#define vl_print(handle, ...)
+#define vl_printfun
+#include <flowprobe/flowprobe_all_api_h.h>
+#undef vl_printfun
+
+/* Get the API version number. */
+#define vl_api_version(n,v) static u32 api_version=(v);
+#include <flowprobe/flowprobe_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;
+} flowprobe_test_main_t;
+
+flowprobe_test_main_t flowprobe_test_main;
+
+#define foreach_standard_reply_retval_handler \
+_(flowprobe_tx_interface_add_del_reply) \
+_(flowprobe_params_reply)
+
+#define _(n) \
+ static void vl_api_##n##_t_handler \
+ (vl_api_##n##_t * mp) \
+ { \
+ vat_main_t * vam = flowprobe_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 \
+_(FLOWPROBE_TX_INTERFACE_ADD_DEL_REPLY, \
+ flowprobe_tx_interface_add_del_reply) \
+_(FLOWPROBE_PARAMS_REPLY, flowprobe_params_reply)
+
+static int
+api_flowprobe_tx_interface_add_del (vat_main_t * vam)
+{
+ unformat_input_t *i = vam->input;
+ int enable_disable = 1;
+ u8 which = FLOW_VARIANT_IP4;
+ u32 sw_if_index = ~0;
+ vl_api_flowprobe_tx_interface_add_del_t *mp;
+ int ret;
+
+ /* 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 if (unformat (i, "ip4"))
+ which = FLOW_VARIANT_IP4;
+ else if (unformat (i, "ip6"))
+ which = FLOW_VARIANT_IP6;
+ else if (unformat (i, "l2"))
+ which = FLOW_VARIANT_L2;
+ else
+ break;
+ }
+
+ if (sw_if_index == ~0)
+ {
+ errmsg ("missing interface name / explicit sw_if_index number \n");
+ return -99;
+ }
+
+ /* Construct the API message */
+ M (FLOWPROBE_TX_INTERFACE_ADD_DEL, mp);
+ mp->sw_if_index = ntohl (sw_if_index);
+ mp->is_add = enable_disable;
+ mp->which = which;
+
+ /* send it... */
+ S (mp);
+
+ /* Wait for a reply... */
+ W (ret);
+ return ret;
+}
+
+static int
+api_flowprobe_params (vat_main_t * vam)
+{
+ unformat_input_t *i = vam->input;
+ u8 record_l2 = 0, record_l3 = 0, record_l4 = 0;
+ u32 active_timer = ~0;
+ u32 passive_timer = ~0;
+ vl_api_flowprobe_params_t *mp;
+ int ret;
+
+ while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (i, "active %d", &active_timer))
+ ;
+ else if (unformat (i, "passive %d", &passive_timer))
+ ;
+ else if (unformat (i, "record"))
+ while (unformat_check_input (i) != UNFORMAT_END_OF_INPUT)
+ {
+ if (unformat (i, "l2"))
+ record_l2 = 1;
+ else if (unformat (i, "l3"))
+ record_l3 = 1;
+ else if (unformat (i, "l4"))
+ record_l4 = 1;
+ else
+ break;
+ }
+ else
+ break;
+ }
+
+ if (passive_timer > 0 && active_timer > passive_timer)
+ {
+ errmsg ("Passive timer has to be greater than active one...\n");
+ return -99;
+ }
+
+ /* Construct the API message */
+ M (FLOWPROBE_PARAMS, mp);
+ mp->record_l2 = record_l2;
+ mp->record_l3 = record_l3;
+ mp->record_l4 = record_l4;
+ mp->active_timer = ntohl (active_timer);
+ mp->passive_timer = ntohl (passive_timer);
+
+ /* send it... */
+ S (mp);
+
+ /* Wait for a reply... */
+ W (ret);
+
+ return ret;
+}
+
+/*
+ * List of messages that the api test plugin sends,
+ * and that the data plane plugin processes
+ */
+#define foreach_vpe_api_msg \
+_(flowprobe_tx_interface_add_del, "<intfc> [disable]") \
+_(flowprobe_params, "record <[l2] [l3] [l4]> [active <timer> passive <timer>]")
+
+static void
+flowprobe_vat_api_hookup (vat_main_t * vam)
+{
+ flowprobe_test_main_t *sm = &flowprobe_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)
+{
+ flowprobe_test_main_t *sm = &flowprobe_test_main;
+ u8 *name;
+
+ sm->vat_main = vam;
+
+ /* Ask the vpp engine for the first assigned message-id */
+ name = format (0, "flowprobe_%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)
+ flowprobe_vat_api_hookup (vam);
+
+ vec_free (name);
+
+ return 0;
+}
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */
diff --git a/src/plugins/flowprobe/node.c b/src/plugins/flowprobe/node.c
new file mode 100644
index 00000000..2f7d0025
--- /dev/null
+++ b/src/plugins/flowprobe/node.c
@@ -0,0 +1,1053 @@
+/*
+ * node.c - ipfix probe graph node
+ *
+ * Copyright (c) 2017 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.
+ */
+#include <vlib/vlib.h>
+#include <vnet/vnet.h>
+#include <vnet/pg/pg.h>
+#include <vppinfra/crc32.h>
+#include <vppinfra/error.h>
+#include <flowprobe/flowprobe.h>
+#include <vnet/ip/ip6_packet.h>
+#include <vlibmemory/api.h>
+
+static void flowprobe_export_entry (vlib_main_t * vm, flowprobe_entry_t * e);
+
+/**
+ * @file flow record generator graph node
+ */
+
+typedef struct
+{
+ /** interface handle */
+ u32 rx_sw_if_index;
+ u32 tx_sw_if_index;
+ /** packet timestamp */
+ u64 timestamp;
+ /** size of the buffer */
+ u16 buffer_size;
+
+ /** L2 information */
+ u8 src_mac[6];
+ u8 dst_mac[6];
+ /** Ethertype */
+ u16 ethertype;
+
+ /** L3 information */
+ ip46_address_t src_address;
+ ip46_address_t dst_address;
+ u8 protocol;
+ u8 tos;
+
+ /** L4 information */
+ u16 src_port;
+ u16 dst_port;
+
+ flowprobe_variant_t which;
+} flowprobe_trace_t;
+
+static char *flowprobe_variant_strings[] = {
+ [FLOW_VARIANT_IP4] = "IP4",
+ [FLOW_VARIANT_IP6] = "IP6",
+ [FLOW_VARIANT_L2] = "L2",
+ [FLOW_VARIANT_L2_IP4] = "L2-IP4",
+ [FLOW_VARIANT_L2_IP6] = "L2-IP6",
+};
+
+/* packet trace format function */
+static u8 *
+format_flowprobe_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 *);
+ flowprobe_trace_t *t = va_arg (*args, flowprobe_trace_t *);
+ uword indent = format_get_indent (s);
+
+ s = format (s,
+ "FLOWPROBE[%s]: rx_sw_if_index %d, tx_sw_if_index %d, "
+ "timestamp %lld, size %d", flowprobe_variant_strings[t->which],
+ t->rx_sw_if_index, t->tx_sw_if_index,
+ t->timestamp, t->buffer_size);
+
+ if (t->which == FLOW_VARIANT_L2)
+ s = format (s, "\n%U -> %U", format_white_space, indent,
+ format_ethernet_address, &t->src_mac,
+ format_ethernet_address, &t->dst_mac);
+
+ if (t->protocol > 0
+ && (t->which == FLOW_VARIANT_L2_IP4 || t->which == FLOW_VARIANT_IP4
+ || t->which == FLOW_VARIANT_L2_IP6 || t->which == FLOW_VARIANT_IP6))
+ s =
+ format (s, "\n%U%U: %U -> %U", format_white_space, indent,
+ format_ip_protocol, t->protocol, format_ip46_address,
+ &t->src_address, IP46_TYPE_ANY, format_ip46_address,
+ &t->dst_address, IP46_TYPE_ANY);
+ return s;
+}
+
+vlib_node_registration_t flowprobe_ip4_node;
+vlib_node_registration_t flowprobe_ip6_node;
+vlib_node_registration_t flowprobe_l2_node;
+
+/* No counters at the moment */
+#define foreach_flowprobe_error \
+_(COLLISION, "Hash table collisions") \
+_(BUFFER, "Buffer allocation error") \
+_(EXPORTED_PACKETS, "Exported packets") \
+_(INPATH, "Exported packets in path")
+
+typedef enum
+{
+#define _(sym,str) FLOWPROBE_ERROR_##sym,
+ foreach_flowprobe_error
+#undef _
+ FLOWPROBE_N_ERROR,
+} flowprobe_error_t;
+
+static char *flowprobe_error_strings[] = {
+#define _(sym,string) string,
+ foreach_flowprobe_error
+#undef _
+};
+
+typedef enum
+{
+ FLOWPROBE_NEXT_DROP,
+ FLOWPROBE_NEXT_IP4_LOOKUP,
+ FLOWPROBE_N_NEXT,
+} flowprobe_next_t;
+
+#define FLOWPROBE_NEXT_NODES { \
+ [FLOWPROBE_NEXT_DROP] = "error-drop", \
+ [FLOWPROBE_NEXT_IP4_LOOKUP] = "ip4-lookup", \
+}
+
+static inline flowprobe_variant_t
+flowprobe_get_variant (flowprobe_variant_t which,
+ flowprobe_record_t flags, u16 ethertype)
+{
+ if (which == FLOW_VARIANT_L2
+ && (flags & FLOW_RECORD_L3 || flags & FLOW_RECORD_L4))
+ return ethertype == ETHERNET_TYPE_IP6 ? FLOW_VARIANT_L2_IP6 : ethertype ==
+ ETHERNET_TYPE_IP4 ? FLOW_VARIANT_L2_IP4 : FLOW_VARIANT_L2;
+ return which;
+}
+
+/*
+ * NTP rfc868 : 2 208 988 800 corresponds to 00:00 1 Jan 1970 GMT
+ */
+#define NTP_TIMESTAMP 2208988800L
+
+static inline u32
+flowprobe_common_add (vlib_buffer_t * to_b, flowprobe_entry_t * e, u16 offset)
+{
+ u16 start = offset;
+
+ /* Ingress interface */
+ u32 rx_if = clib_host_to_net_u32 (e->key.rx_sw_if_index);
+ clib_memcpy (to_b->data + offset, &rx_if, sizeof (rx_if));
+ offset += sizeof (rx_if);
+
+ /* Egress interface */
+ u32 tx_if = clib_host_to_net_u32 (e->key.tx_sw_if_index);
+ clib_memcpy (to_b->data + offset, &tx_if, sizeof (tx_if));
+ offset += sizeof (tx_if);
+
+ /* packet delta count */
+ u64 packetdelta = clib_host_to_net_u64 (e->packetcount);
+ clib_memcpy (to_b->data + offset, &packetdelta, sizeof (u64));
+ offset += sizeof (u64);
+
+ /* flowStartNanoseconds */
+ u32 t = clib_host_to_net_u32 (e->flow_start.sec + NTP_TIMESTAMP);
+ clib_memcpy (to_b->data + offset, &t, sizeof (u32));
+ offset += sizeof (u32);
+ t = clib_host_to_net_u32 (e->flow_start.nsec);
+ clib_memcpy (to_b->data + offset, &t, sizeof (u32));
+ offset += sizeof (u32);
+
+ /* flowEndNanoseconds */
+ t = clib_host_to_net_u32 (e->flow_end.sec + NTP_TIMESTAMP);
+ clib_memcpy (to_b->data + offset, &t, sizeof (u32));
+ offset += sizeof (u32);
+ t = clib_host_to_net_u32 (e->flow_end.nsec);
+ clib_memcpy (to_b->data + offset, &t, sizeof (u32));
+ offset += sizeof (u32);
+
+ return offset - start;
+}
+
+static inline u32
+flowprobe_l2_add (vlib_buffer_t * to_b, flowprobe_entry_t * e, u16 offset)
+{
+ u16 start = offset;
+
+ /* src mac address */
+ clib_memcpy (to_b->data + offset, &e->key.src_mac, 6);
+ offset += 6;
+
+ /* dst mac address */
+ clib_memcpy (to_b->data + offset, &e->key.dst_mac, 6);
+ offset += 6;
+
+ /* ethertype */
+ clib_memcpy (to_b->data + offset, &e->key.ethertype, 2);
+ offset += 2;
+
+ return offset - start;
+}
+
+static inline u32
+flowprobe_l3_ip6_add (vlib_buffer_t * to_b, flowprobe_entry_t * e, u16 offset)
+{
+ u16 start = offset;
+
+ /* ip6 src address */
+ clib_memcpy (to_b->data + offset, &e->key.src_address,
+ sizeof (ip6_address_t));
+ offset += sizeof (ip6_address_t);
+
+ /* ip6 dst address */
+ clib_memcpy (to_b->data + offset, &e->key.dst_address,
+ sizeof (ip6_address_t));
+ offset += sizeof (ip6_address_t);
+
+ /* Protocol */
+ to_b->data[offset++] = e->key.protocol;
+
+ /* octetDeltaCount */
+ u64 octetdelta = clib_host_to_net_u64 (e->octetcount);
+ clib_memcpy (to_b->data + offset, &octetdelta, sizeof (u64));
+ offset += sizeof (u64);
+
+ return offset - start;
+}
+
+static inline u32
+flowprobe_l3_ip4_add (vlib_buffer_t * to_b, flowprobe_entry_t * e, u16 offset)
+{
+ u16 start = offset;
+
+ /* ip4 src address */
+ clib_memcpy (to_b->data + offset, &e->key.src_address.ip4,
+ sizeof (ip4_address_t));
+ offset += sizeof (ip4_address_t);
+
+ /* ip4 dst address */
+ clib_memcpy (to_b->data + offset, &e->key.dst_address.ip4,
+ sizeof (ip4_address_t));
+ offset += sizeof (ip4_address_t);
+
+ /* Protocol */
+ to_b->data[offset++] = e->key.protocol;
+
+ /* octetDeltaCount */
+ u64 octetdelta = clib_host_to_net_u64 (e->octetcount);
+ clib_memcpy (to_b->data + offset, &octetdelta, sizeof (u64));
+ offset += sizeof (u64);
+
+ return offset - start;
+}
+
+static inline u32
+flowprobe_l4_add (vlib_buffer_t * to_b, flowprobe_entry_t * e, u16 offset)
+{
+ u16 start = offset;
+
+ /* src port */
+ clib_memcpy (to_b->data + offset, &e->key.src_port, 2);
+ offset += 2;
+
+ /* dst port */
+ clib_memcpy (to_b->data + offset, &e->key.dst_port, 2);
+ offset += 2;
+
+ /* tcp control bits */
+ u16 control_bits = htons (e->prot.tcp.flags);
+ clib_memcpy (to_b->data + offset, &control_bits, 2);
+ offset += 2;
+
+ return offset - start;
+}
+
+static inline u32
+flowprobe_hash (flowprobe_key_t * k)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ u32 h = 0;
+
+#ifdef clib_crc32c_uses_intrinsics
+ h = clib_crc32c ((u8 *) k, sizeof (*k));
+#else
+ int i;
+ u64 tmp = 0;
+ for (i = 0; i < sizeof (*k) / 8; i++)
+ tmp ^= ((u64 *) k)[i];
+
+ h = clib_xxhash (tmp);
+#endif
+
+ return h >> (32 - fm->ht_log2len);
+}
+
+flowprobe_entry_t *
+flowprobe_lookup (u32 my_cpu_number, flowprobe_key_t * k, u32 * poolindex,
+ bool * collision)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ flowprobe_entry_t *e;
+ u32 h;
+
+ h = (fm->active_timer) ? flowprobe_hash (k) : 0;
+
+ /* Lookup in the flow state pool */
+ *poolindex = fm->hash_per_worker[my_cpu_number][h];
+ if (*poolindex != ~0)
+ {
+ e = pool_elt_at_index (fm->pool_per_worker[my_cpu_number], *poolindex);
+ if (e)
+ {
+ /* Verify key or report collision */
+ if (memcmp (k, &e->key, sizeof (flowprobe_key_t)))
+ *collision = true;
+ return e;
+ }
+ }
+
+ return 0;
+}
+
+flowprobe_entry_t *
+flowprobe_create (u32 my_cpu_number, flowprobe_key_t * k, u32 * poolindex)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ u32 h;
+
+ flowprobe_entry_t *e;
+
+ /* Get my index */
+ h = (fm->active_timer) ? flowprobe_hash (k) : 0;
+
+ pool_get (fm->pool_per_worker[my_cpu_number], e);
+ *poolindex = e - fm->pool_per_worker[my_cpu_number];
+ fm->hash_per_worker[my_cpu_number][h] = *poolindex;
+
+ e->key = *k;
+
+ if (fm->passive_timer > 0)
+ {
+ e->passive_timer_handle = tw_timer_start_2t_1w_2048sl
+ (fm->timers_per_worker[my_cpu_number], *poolindex, 0,
+ fm->passive_timer);
+ }
+ return e;
+}
+
+static inline void
+add_to_flow_record_state (vlib_main_t * vm, vlib_node_runtime_t * node,
+ flowprobe_main_t * fm, vlib_buffer_t * b,
+ timestamp_nsec_t timestamp, u16 length,
+ flowprobe_variant_t which, flowprobe_trace_t * t)
+{
+ if (fm->disabled)
+ return;
+
+ u32 my_cpu_number = vm->thread_index;
+ u16 octets = 0;
+
+ flowprobe_record_t flags = fm->context[which].flags;
+ bool collect_ip4 = false, collect_ip6 = false;
+ ASSERT (b);
+ ethernet_header_t *eth = vlib_buffer_get_current (b);
+ u16 ethertype = clib_net_to_host_u16 (eth->type);
+ /* *INDENT-OFF* */
+ flowprobe_key_t k = {};
+ /* *INDENT-ON* */
+ ip4_header_t *ip4 = 0;
+ ip6_header_t *ip6 = 0;
+ udp_header_t *udp = 0;
+ tcp_header_t *tcp = 0;
+ u8 tcp_flags = 0;
+
+ if (flags & FLOW_RECORD_L3 || flags & FLOW_RECORD_L4)
+ {
+ collect_ip4 = which == FLOW_VARIANT_L2_IP4 || which == FLOW_VARIANT_IP4;
+ collect_ip6 = which == FLOW_VARIANT_L2_IP6 || which == FLOW_VARIANT_IP6;
+ }
+
+ k.rx_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_RX];
+ k.tx_sw_if_index = vnet_buffer (b)->sw_if_index[VLIB_TX];
+
+ k.which = which;
+
+ if (flags & FLOW_RECORD_L2)
+ {
+ clib_memcpy (k.src_mac, eth->src_address, 6);
+ clib_memcpy (k.dst_mac, eth->dst_address, 6);
+ k.ethertype = ethertype;
+ }
+ if (collect_ip6 && ethertype == ETHERNET_TYPE_IP6)
+ {
+ ip6 = (ip6_header_t *) (eth + 1);
+ if (flags & FLOW_RECORD_L3)
+ {
+ k.src_address.as_u64[0] = ip6->src_address.as_u64[0];
+ k.src_address.as_u64[1] = ip6->src_address.as_u64[1];
+ k.dst_address.as_u64[0] = ip6->dst_address.as_u64[0];
+ k.dst_address.as_u64[1] = ip6->dst_address.as_u64[1];
+ }
+ k.protocol = ip6->protocol;
+ if (k.protocol == IP_PROTOCOL_UDP)
+ udp = (udp_header_t *) (ip6 + 1);
+ else if (k.protocol == IP_PROTOCOL_TCP)
+ tcp = (tcp_header_t *) (ip6 + 1);
+
+ octets = clib_net_to_host_u16 (ip6->payload_length)
+ + sizeof (ip6_header_t);
+ }
+ if (collect_ip4 && ethertype == ETHERNET_TYPE_IP4)
+ {
+ ip4 = (ip4_header_t *) (eth + 1);
+ if (flags & FLOW_RECORD_L3)
+ {
+ k.src_address.ip4.as_u32 = ip4->src_address.as_u32;
+ k.dst_address.ip4.as_u32 = ip4->dst_address.as_u32;
+ }
+ k.protocol = ip4->protocol;
+ if ((flags & FLOW_RECORD_L4) && k.protocol == IP_PROTOCOL_UDP)
+ udp = (udp_header_t *) (ip4 + 1);
+ else if ((flags & FLOW_RECORD_L4) && k.protocol == IP_PROTOCOL_TCP)
+ tcp = (tcp_header_t *) (ip4 + 1);
+
+ octets = clib_net_to_host_u16 (ip4->length);
+ }
+
+ if (udp)
+ {
+ k.src_port = udp->src_port;
+ k.dst_port = udp->dst_port;
+ }
+ else if (tcp)
+ {
+ k.src_port = tcp->src_port;
+ k.dst_port = tcp->dst_port;
+ tcp_flags = tcp->flags;
+ }
+
+ if (t)
+ {
+ t->rx_sw_if_index = k.rx_sw_if_index;
+ t->tx_sw_if_index = k.tx_sw_if_index;
+ clib_memcpy (t->src_mac, k.src_mac, 6);
+ clib_memcpy (t->dst_mac, k.dst_mac, 6);
+ t->ethertype = k.ethertype;
+ t->src_address.ip4.as_u32 = k.src_address.ip4.as_u32;
+ t->dst_address.ip4.as_u32 = k.dst_address.ip4.as_u32;
+ t->protocol = k.protocol;
+ t->src_port = k.src_port;
+ t->dst_port = k.dst_port;
+ t->which = k.which;
+ }
+
+ flowprobe_entry_t *e = 0;
+ f64 now = vlib_time_now (vm);
+ if (fm->active_timer > 0)
+ {
+ u32 poolindex = ~0;
+ bool collision = false;
+
+ e = flowprobe_lookup (my_cpu_number, &k, &poolindex, &collision);
+ if (collision)
+ {
+ /* Flush data and clean up entry for reuse. */
+ if (e->packetcount)
+ flowprobe_export_entry (vm, e);
+ e->key = k;
+ e->flow_start = timestamp;
+ vlib_node_increment_counter (vm, node->node_index,
+ FLOWPROBE_ERROR_COLLISION, 1);
+ }
+ if (!e) /* Create new entry */
+ {
+ e = flowprobe_create (my_cpu_number, &k, &poolindex);
+ e->last_exported = now;
+ e->flow_start = timestamp;
+ }
+ }
+ else
+ {
+ e = &fm->stateless_entry[my_cpu_number];
+ e->key = k;
+ }
+
+ if (e)
+ {
+ /* Updating entry */
+ e->packetcount++;
+ e->octetcount += octets;
+ e->last_updated = now;
+ e->flow_end = timestamp;
+ e->prot.tcp.flags |= tcp_flags;
+ if (fm->active_timer == 0
+ || (now > e->last_exported + fm->active_timer))
+ flowprobe_export_entry (vm, e);
+ }
+}
+
+static u16
+flowprobe_get_headersize (void)
+{
+ return sizeof (ip4_header_t) + sizeof (udp_header_t) +
+ sizeof (ipfix_message_header_t) + sizeof (ipfix_set_header_t);
+}
+
+static void
+flowprobe_export_send (vlib_main_t * vm, vlib_buffer_t * b0,
+ flowprobe_variant_t which)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ flow_report_main_t *frm = &flow_report_main;
+ vlib_frame_t *f;
+ ip4_ipfix_template_packet_t *tp;
+ ipfix_set_header_t *s;
+ ipfix_message_header_t *h;
+ ip4_header_t *ip;
+ udp_header_t *udp;
+ flowprobe_record_t flags = fm->context[which].flags;
+ u32 my_cpu_number = vm->thread_index;
+
+ /* Fill in header */
+ flow_report_stream_t *stream;
+
+ /* Nothing to send */
+ if (fm->context[which].next_record_offset_per_worker[my_cpu_number] <=
+ flowprobe_get_headersize ())
+ return;
+
+ u32 i, index = vec_len (frm->streams);
+ for (i = 0; i < index; i++)
+ if (frm->streams[i].domain_id == 1)
+ {
+ index = i;
+ break;
+ }
+ if (i == vec_len (frm->streams))
+ {
+ vec_validate (frm->streams, index);
+ frm->streams[index].domain_id = 1;
+ }
+ stream = &frm->streams[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->flags_and_fragment_offset = 0;
+ 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);
+ udp->checksum = 0;
+
+ /* 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);
+
+ s->set_id_length = ipfix_set_id_length (fm->template_reports[flags],
+ 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));
+
+ /* Find or allocate a frame */
+ f = fm->context[which].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->context[which].frames_per_worker[my_cpu_number] = f;
+ u32 bi0 = vlib_get_buffer_index (vm, b0);
+
+ /* Enqueue the buffer */
+ to_next = vlib_frame_vector_args (f);
+ to_next[0] = bi0;
+ f->n_vectors = 1;
+ }
+
+ vlib_put_frame_to_node (vm, ip4_lookup_node.index, f);
+ vlib_node_increment_counter (vm, flowprobe_l2_node.index,
+ FLOWPROBE_ERROR_EXPORTED_PACKETS, 1);
+
+ fm->context[which].frames_per_worker[my_cpu_number] = 0;
+ fm->context[which].buffers_per_worker[my_cpu_number] = 0;
+ fm->context[which].next_record_offset_per_worker[my_cpu_number] =
+ flowprobe_get_headersize ();
+}
+
+static vlib_buffer_t *
+flowprobe_get_buffer (vlib_main_t * vm, flowprobe_variant_t which)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ flow_report_main_t *frm = &flow_report_main;
+ vlib_buffer_t *b0;
+ u32 bi0;
+ vlib_buffer_free_list_t *fl;
+ u32 my_cpu_number = vm->thread_index;
+
+ /* Find or allocate a buffer */
+ b0 = fm->context[which].buffers_per_worker[my_cpu_number];
+
+ /* Need to allocate a buffer? */
+ if (PREDICT_FALSE (b0 == 0))
+ {
+ if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
+ {
+ vlib_node_increment_counter (vm, flowprobe_l2_node.index,
+ FLOWPROBE_ERROR_BUFFER, 1);
+ return 0;
+ }
+
+ /* Initialize the buffer */
+ b0 = fm->context[which].buffers_per_worker[my_cpu_number] =
+ vlib_get_buffer (vm, bi0);
+ fl =
+ vlib_buffer_get_free_list (vm, VLIB_BUFFER_DEFAULT_FREE_LIST_INDEX);
+ vlib_buffer_init_for_free_list (b0, fl);
+ VLIB_BUFFER_TRACE_TRAJECTORY_INIT (b0);
+
+ b0->current_data = 0;
+ b0->current_length = flowprobe_get_headersize ();
+ 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;
+ fm->context[which].next_record_offset_per_worker[my_cpu_number] =
+ b0->current_length;
+ }
+
+ return b0;
+}
+
+static void
+flowprobe_export_entry (vlib_main_t * vm, flowprobe_entry_t * e)
+{
+ u32 my_cpu_number = vm->thread_index;
+ flowprobe_main_t *fm = &flowprobe_main;
+ flow_report_main_t *frm = &flow_report_main;
+ vlib_buffer_t *b0;
+ bool collect_ip4 = false, collect_ip6 = false;
+ flowprobe_variant_t which = e->key.which;
+ flowprobe_record_t flags = fm->context[which].flags;
+ u16 offset =
+ fm->context[which].next_record_offset_per_worker[my_cpu_number];
+
+ if (offset < flowprobe_get_headersize ())
+ offset = flowprobe_get_headersize ();
+
+ b0 = flowprobe_get_buffer (vm, which);
+ /* No available buffer, what to do... */
+ if (b0 == 0)
+ return;
+
+ if (flags & FLOW_RECORD_L3)
+ {
+ collect_ip4 = which == FLOW_VARIANT_L2_IP4 || which == FLOW_VARIANT_IP4;
+ collect_ip6 = which == FLOW_VARIANT_L2_IP6 || which == FLOW_VARIANT_IP6;
+ }
+
+ offset += flowprobe_common_add (b0, e, offset);
+
+ if (flags & FLOW_RECORD_L2)
+ offset += flowprobe_l2_add (b0, e, offset);
+ if (collect_ip6)
+ offset += flowprobe_l3_ip6_add (b0, e, offset);
+ if (collect_ip4)
+ offset += flowprobe_l3_ip4_add (b0, e, offset);
+ if (flags & FLOW_RECORD_L4)
+ offset += flowprobe_l4_add (b0, e, offset);
+
+ /* Reset per flow-export counters */
+ e->packetcount = 0;
+ e->octetcount = 0;
+ e->last_exported = vlib_time_now (vm);
+
+ b0->current_length = offset;
+
+ fm->context[which].next_record_offset_per_worker[my_cpu_number] = offset;
+ /* Time to flush the buffer? */
+ if (offset + fm->template_size[flags] > frm->path_mtu)
+ flowprobe_export_send (vm, b0, which);
+}
+
+uword
+flowprobe_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame,
+ flowprobe_variant_t which)
+{
+ u32 n_left_from, *from, *to_next;
+ flowprobe_next_t next_index;
+ flowprobe_main_t *fm = &flowprobe_main;
+ timestamp_nsec_t timestamp;
+
+ unix_time_now_nsec_fraction (&timestamp.sec, &timestamp.nsec);
+
+ 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 = FLOWPROBE_NEXT_DROP;
+ u32 next1 = FLOWPROBE_NEXT_DROP;
+ 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_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_TX],
+ &next0, b0);
+ vnet_feature_next (vnet_buffer (b1)->sw_if_index[VLIB_TX],
+ &next1, b1);
+
+ len0 = vlib_buffer_length_in_chain (vm, b0);
+ ethernet_header_t *eh0 = vlib_buffer_get_current (b0);
+ u16 ethertype0 = clib_net_to_host_u16 (eh0->type);
+
+ if (PREDICT_TRUE ((b0->flags & VLIB_BUFFER_FLOW_REPORT) == 0))
+ add_to_flow_record_state (vm, node, fm, b0, timestamp, len0,
+ flowprobe_get_variant
+ (which, fm->context[which].flags,
+ ethertype0), 0);
+
+ len1 = vlib_buffer_length_in_chain (vm, b1);
+ ethernet_header_t *eh1 = vlib_buffer_get_current (b1);
+ u16 ethertype1 = clib_net_to_host_u16 (eh1->type);
+
+ if (PREDICT_TRUE ((b1->flags & VLIB_BUFFER_FLOW_REPORT) == 0))
+ add_to_flow_record_state (vm, node, fm, b1, timestamp, len1,
+ flowprobe_get_variant
+ (which, fm->context[which].flags,
+ ethertype1), 0);
+
+ /* 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 = FLOWPROBE_NEXT_DROP;
+ 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_feature_next (vnet_buffer (b0)->sw_if_index[VLIB_TX],
+ &next0, b0);
+
+ len0 = vlib_buffer_length_in_chain (vm, b0);
+ ethernet_header_t *eh0 = vlib_buffer_get_current (b0);
+ u16 ethertype0 = clib_net_to_host_u16 (eh0->type);
+
+ if (PREDICT_TRUE ((b0->flags & VLIB_BUFFER_FLOW_REPORT) == 0))
+ {
+ flowprobe_trace_t *t = 0;
+ if (PREDICT_FALSE ((node->flags & VLIB_NODE_FLAG_TRACE)
+ && (b0->flags & VLIB_BUFFER_IS_TRACED)))
+ t = vlib_add_trace (vm, node, b0, sizeof (*t));
+
+ add_to_flow_record_state (vm, node, fm, b0, timestamp, len0,
+ flowprobe_get_variant
+ (which, fm->context[which].flags,
+ ethertype0), t);
+ }
+
+ /* 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;
+}
+
+static uword
+flowprobe_ip4_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return flowprobe_node_fn (vm, node, frame, FLOW_VARIANT_IP4);
+}
+
+static uword
+flowprobe_ip6_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return flowprobe_node_fn (vm, node, frame, FLOW_VARIANT_IP6);
+}
+
+static uword
+flowprobe_l2_node_fn (vlib_main_t * vm,
+ vlib_node_runtime_t * node, vlib_frame_t * frame)
+{
+ return flowprobe_node_fn (vm, node, frame, FLOW_VARIANT_L2);
+}
+
+static inline void
+flush_record (flowprobe_variant_t which)
+{
+ vlib_main_t *vm = vlib_get_main ();
+ vlib_buffer_t *b = flowprobe_get_buffer (vm, which);
+ if (b)
+ flowprobe_export_send (vm, b, which);
+}
+
+void
+flowprobe_flush_callback_ip4 (void)
+{
+ flush_record (FLOW_VARIANT_IP4);
+}
+
+void
+flowprobe_flush_callback_ip6 (void)
+{
+ flush_record (FLOW_VARIANT_IP6);
+}
+
+void
+flowprobe_flush_callback_l2 (void)
+{
+ flush_record (FLOW_VARIANT_L2);
+ flush_record (FLOW_VARIANT_L2_IP4);
+ flush_record (FLOW_VARIANT_L2_IP6);
+}
+
+
+static void
+flowprobe_delete_by_index (u32 my_cpu_number, u32 poolindex)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ flowprobe_entry_t *e;
+ u32 h;
+
+ e = pool_elt_at_index (fm->pool_per_worker[my_cpu_number], poolindex);
+
+ /* Get my index */
+ h = flowprobe_hash (&e->key);
+
+ /* Reset hash */
+ fm->hash_per_worker[my_cpu_number][h] = ~0;
+
+ pool_put_index (fm->pool_per_worker[my_cpu_number], poolindex);
+}
+
+
+/* Per worker process processing the active/passive expired entries */
+static uword
+flowprobe_walker_process (vlib_main_t * vm,
+ vlib_node_runtime_t * rt, vlib_frame_t * f)
+{
+ flowprobe_main_t *fm = &flowprobe_main;
+ flow_report_main_t *frm = &flow_report_main;
+ flowprobe_entry_t *e;
+
+ /*
+ * $$$$ Remove this check from here and track FRM status and disable
+ * this process if required.
+ */
+ if (frm->ipfix_collector.as_u32 == 0 || frm->src_address.as_u32 == 0)
+ {
+ fm->disabled = true;
+ return 0;
+ }
+ fm->disabled = false;
+
+ u32 cpu_index = os_get_thread_index ();
+ u32 *to_be_removed = 0, *i;
+
+ /*
+ * Tick the timer when required and process the vector of expired
+ * timers
+ */
+ f64 start_time = vlib_time_now (vm);
+ u32 count = 0;
+
+ tw_timer_expire_timers_2t_1w_2048sl (fm->timers_per_worker[cpu_index],
+ start_time);
+
+ vec_foreach (i, fm->expired_passive_per_worker[cpu_index])
+ {
+ u32 exported = 0;
+ f64 now = vlib_time_now (vm);
+ if (now > start_time + 100e-6
+ || exported > FLOW_MAXIMUM_EXPORT_ENTRIES - 1)
+ break;
+
+ if (pool_is_free_index (fm->pool_per_worker[cpu_index], *i))
+ {
+ clib_warning ("Element is %d is freed already\n", *i);
+ continue;
+ }
+ else
+ e = pool_elt_at_index (fm->pool_per_worker[cpu_index], *i);
+
+ /* Check last update timestamp. If it is longer than passive time nuke
+ * entry. Otherwise restart timer with what's left
+ * Premature passive timer by more than 10%
+ */
+ if ((now - e->last_updated) < (u64) (fm->passive_timer * 0.9))
+ {
+ u64 delta = fm->passive_timer - (now - e->last_updated);
+ e->passive_timer_handle = tw_timer_start_2t_1w_2048sl
+ (fm->timers_per_worker[cpu_index], *i, 0, delta);
+ }
+ else /* Nuke entry */
+ {
+ vec_add1 (to_be_removed, *i);
+ }
+ /* If anything to report send it to the exporter */
+ if (e->packetcount && now > e->last_exported + fm->active_timer)
+ {
+ exported++;
+ flowprobe_export_entry (vm, e);
+ }
+ count++;
+ }
+ if (count)
+ vec_delete (fm->expired_passive_per_worker[cpu_index], count, 0);
+
+ vec_foreach (i, to_be_removed) flowprobe_delete_by_index (cpu_index, *i);
+ vec_free (to_be_removed);
+
+ return 0;
+}
+
+/* *INDENT-OFF* */
+VLIB_REGISTER_NODE (flowprobe_ip4_node) = {
+ .function = flowprobe_ip4_node_fn,
+ .name = "flowprobe-ip4",
+ .vector_size = sizeof (u32),
+ .format_trace = format_flowprobe_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(flowprobe_error_strings),
+ .error_strings = flowprobe_error_strings,
+ .n_next_nodes = FLOWPROBE_N_NEXT,
+ .next_nodes = FLOWPROBE_NEXT_NODES,
+};
+VLIB_REGISTER_NODE (flowprobe_ip6_node) = {
+ .function = flowprobe_ip6_node_fn,
+ .name = "flowprobe-ip6",
+ .vector_size = sizeof (u32),
+ .format_trace = format_flowprobe_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(flowprobe_error_strings),
+ .error_strings = flowprobe_error_strings,
+ .n_next_nodes = FLOWPROBE_N_NEXT,
+ .next_nodes = FLOWPROBE_NEXT_NODES,
+};
+VLIB_REGISTER_NODE (flowprobe_l2_node) = {
+ .function = flowprobe_l2_node_fn,
+ .name = "flowprobe-l2",
+ .vector_size = sizeof (u32),
+ .format_trace = format_flowprobe_trace,
+ .type = VLIB_NODE_TYPE_INTERNAL,
+ .n_errors = ARRAY_LEN(flowprobe_error_strings),
+ .error_strings = flowprobe_error_strings,
+ .n_next_nodes = FLOWPROBE_N_NEXT,
+ .next_nodes = FLOWPROBE_NEXT_NODES,
+};
+VLIB_REGISTER_NODE (flowprobe_walker_node) = {
+ .function = flowprobe_walker_process,
+ .name = "flowprobe-walker",
+ .type = VLIB_NODE_TYPE_INPUT,
+ .state = VLIB_NODE_STATE_INTERRUPT,
+};
+/* *INDENT-ON* */
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */