/*
* Copyright (c) 2015 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.
*/
/*
* config.c: feature configuration
*
* Copyright (c) 2008 Eliot Dresselhaus
*
* Permission is hereby granted, free of charge, to any person obtaining
* a copy of this software and associated documentation files (the
* "Software"), to deal in the Software without restriction, including
* without limitation the rights to use, copy, modify, merge, publish,
* distribute, sublicense, and/or sell copies of the Software, and to
* permit persons to whom the Software is furnished to do so, subject to
* the following conditions:
*
* The above copyright notice and this permission notice shall be
* included in all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
* EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
* MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
* NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
* LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
* OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
* WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
*/
#include <vnet/vnet.h>
static vnet_config_feature_t *
duplicate_feature_vector (vnet_config_feature_t * feature_vector)
{
vnet_config_feature_t *result, *f;
result = vec_dup (feature_vector);
vec_foreach (f, result) f->feature_config = vec_dup (f->feature_config);
return result;
}
static void
free_feature_vector (vnet_config_feature_t * feature_vector)
{
vnet_config_feature_t *f;
vec_foreach (f, feature_vector) vnet_config_feature_free (f);
vec_free (feature_vector);
}
static u32
add_next (vlib_main_t * vm,
vnet_config_main_t * cm, u32 last_node_index, u32 this_node_index)
{
u32 i, ni = ~0;
if (last_node_index != ~0)
return vlib_node_add_next (vm, last_node_index, this_node_index);
for (i = 0; i < vec_len (cm->start_node_indices); i++)
{
u32 tmp;
tmp =
vlib_node_add_next (vm, cm->start_node_indices[i], this_node_index);
if (ni == ~0)
ni = tmp;
/* Start nodes to first must agree on next indices. */
ASSERT (ni == tmp);
}
return ni;
}
static vnet_config_t *
find_config_with_features (vlib_main_t * vm,
vnet_config_main_t * cm,
vnet_config_feature_t * feature_vector)
{
u32 last_node_index = ~0;
vnet_config_feature_t *f;
u32 *config_string;
uword *p;
vnet_config_t *c;
config_string = cm->config_string_temp;
cm->config_string_temp = 0;
if (config_string)
_vec_len (config_string) = 0;
vec_foreach (f, feature_vector)
{
/* Connect node graph. */
f->next_index = add_next (vm, cm, last_node_index, f->node_index);
last_node_index = f->node_index;
/* Store next index in config string. */
vec_add1 (config_string, f->next_index);
/* Store feature config. */
vec_add (config_string, f->feature_config, vec_len (f->feature_config));
}
/* Terminate config string with next for end node. */
if (last_node_index == ~0 || last_node_index != cm->end_node_index)
{
u32 next_index = add_next (vm, cm, last_node_index, cm->end_node_index);
vec_add1 (config_string, next_index);
}
/* See if config string is unique. */
p = hash_get_mem (cm->config_string_hash, config_string);
if (p)
{
/* Not unique. Share existing config. */
cm->config_string_temp = config_string; /* we'll use it again later. */
free_feature_vector (feature_vector);
c = pool_elt_at_index (cm->config_pool, p[0]);
}
else
{
u32 *d;
pool_get (cm->config_pool, c);
c->index = c - cm->config_pool;
c->features = feature_vector;
c->config_string_vector = config_string;
/* Allocate copy of config string in heap.
VLIB buffers will maintain pointers to heap as they read out
configuration data. */
c->config_string_heap_index
= heap_alloc (cm->config_string_heap, vec_len (config_string) + 1,
c->config_string_heap_handle);
/* First element in heap points back to pool index. */
d =
vec_elt_at_index (cm->config_string_heap,
c->config_string_heap_index);
d[0] = c->index;
clib_memcpy (d + 1, config_string, vec_bytes (config_string));
hash_set_mem (cm->config_string_hash, config_string, c->index);
c->reference_count = 0; /* will be incremented by caller. */
}
return c;
}
void
vnet_config_init (vlib_main_t * vm,
vnet_config_main_t * cm,
char *start_node_names[],
int n_start_node_names,
char *feature_node_names[], int n_feature_node_names)
{
vlib_node_t *n;
u32 i;
memset (cm, 0, sizeof (cm[0]));
cm->config_string_hash =
hash_create_vec (0,
STRUCT_SIZE_OF (vnet_config_t, config_string_vector[0]),
sizeof (uword));
ASSERT (n_feature_node_names >= 1);
vec_resize (cm->start_node_indices, n_start_node_names);
for (i = 0; i < n_start_node_names; i++)
{
n = vlib_get_node_by_name (vm, (u8 *) start_node_names[i]);
/* Given node name must exist. */
ASSERT (n != 0);
cm->start_node_indices[i] = n->index;
}
vec_resize (cm->node_index_by_feature_index, n_feature_node_names);
for (i = 0; i < n_feature_node_names; i++)
{
if (!feature_node_names[i])
cm->node_index_by_feature_index[i] = ~0;
else
{
n = vlib_get_node_by_name (vm, (u8 *) feature_node_names[i]);
/* Given node may exist in plug-in library which is not present */
if (n)
{
if (i + 1 == n_feature_node_names)
cm->end_node_index = n->index;
cm->node_index_by_feature_index[i] = n->index;
}
else
cm->node_index_by_feature_index[i] = ~0;
}
}
}
static void
remove_reference (vnet_config_main_t * cm, vnet_config_t * c)
{
ASSERT (c->reference_count > 0);
c->reference_count -= 1;
if (c->reference_count == 0)
{
hash_unset (cm->config_string_hash, c->config_string_vector);
vnet_config_free (cm, c);
pool_put (cm->config_pool, c);
}
}
static int
feature_cmp (void *a1, void *a2)
{
vnet_config_feature_t *f1 = a1;
vnet_config_feature_t *f2 = a2;
return (int) f1->feature_index - f2->feature_index;
}
always_inline u32 *
vnet_get_config_heap (vnet_config_main_t * cm, u32 ci)
{
return heap_elt_at_index (cm->config_string_heap, ci);
}
u32
vnet_config_add_feature (vlib_main_t * vm,
vnet_config_main_t * cm,
u32 config_string_heap_index,
u32 feature_index,
void *feature_config, u32 n_feature_config_bytes)
{
vnet_config_t *old, *new;
vnet_config_feature_t *new_features, *f;
</*
* 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 <vnet/udp/udp_local.h>
#include <flowprobe/flowprobe.h>
#include <vlibapi/api.h>
#include <vlibmemory/api.h>
/* define message IDs */
#include <flowprobe/flowprobe.api_enum.h>
#include <flowprobe/flowprobe.api_types.h>
flowprobe_main_t flowprobe_main;
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);
#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 (flowprobe_input_ip4_unicast, static) = {
.arc_name = "ip4-unicast",
.node_name = "flowprobe-input-ip4",
.runs_before = VNET_FEATURES ("ip4-lookup"),
};
VNET_FEATURE_INIT (flowprobe_input_ip4_multicast, static) = {
.arc_name = "ip4-multicast",
.node_name = "flowprobe-input-ip4",
.runs_before = VNET_FEATURES ("ip4-mfib-forward-lookup"),
};
VNET_FEATURE_INIT (flowprobe_input_ip6_unicast, static) = {
.arc_name = "ip6-unicast",
.node_name = "flowprobe-input-ip6",
.runs_before = VNET_FEATURES ("ip6-lookup"),
};
VNET_FEATURE_INIT (flowprobe_input_ip6_multicast, static) = {
.arc_name = "ip6-multicast",
.node_name = "flowprobe-input-ip6",
.runs_before = VNET_FEATURES ("ip6-mfib-forward-lookup"),
};
VNET_FEATURE_INIT (flowprobe_input_l2, static) = {
.arc_name = "device-input",
.node_name = "flowprobe-input-l2",
.runs_before = VNET_FEATURES ("ethernet-input"),
};
VNET_FEATURE_INIT (flowprobe_output_ip4, static) = {
.arc_name = "ip4-output",
.node_name = "flowprobe-output-ip4",
.runs_before = VNET_FEATURES ("interface-output"),
};
VNET_FEATURE_INIT (flowprobe_output_ip6, static) = {
.arc_name = "ip6-output",
.node_name = "flowprobe-output-ip6",
.runs_before = VNET_FEATURES ("interface-output"),
};
VNET_FEATURE_INIT (flowprobe_output_l2, static) = {
.arc_name = "interface-output",
.node_name = "flowprobe-output-l2",
.runs_before = VNET_FEATURES ("interface-output-arc-end"),
};
/* *INDENT-ON* */
/* Macro to finish up custom dump fns */
#define vl_print(handle, ...) vlib_cli_output (handle, __VA_ARGS__)
#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() 6
/* 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++;
/* flowDirection, TLV type 61, u8 */
f->e_id_length = ipfix_e_id_length (0 /* enterprise */, flowDirection, 1);
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 (ipfix_exporter_t *exp, flow_report_t *fr,
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 = &exp->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 = exp->src_address.ip.ip4.as_u32;
ip->dst_address.as_u32 = exp->ipfix_collector.ip.ip4.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 (ipfix_exporter_t *exp, flow_report_t *fr,
u16 collector_port,
ipfix_report_element_t *elts, u32 n_elts,
u32 *stream_index)
{
return flowprobe_template_rewrite_inline (exp, fr, collector_port,
FLOW_VARIANT_IP6);
}
static u8 *
flowprobe_template_rewrite_ip4 (ipfix_exporter_t *exp, flow_report_t *fr,
u16 collector_port,
ipfix_report_element_t *elts, u32 n_elts,
u32 *stream_index)
{
return flowprobe_template_rewrite_inline (exp, fr, collector_port,
FLOW_VARIANT_IP4);
}
static u8 *
flowprobe_template_rewrite_l2 (ipfix_exporter_t *exp, flow_report_t *fr,
u16 collector_port,
ipfix_report_element_t *elts, u32 n_elts,
u32 *stream_index)
{
return flowprobe_template_rewrite_inline (exp, fr, collector_port,
FLOW_VARIANT_L2);
}
static u8 *
flowprobe_template_rewrite_l2_ip4 (ipfix_exporter_t *exp, flow_report_t *fr,
u16 collector_port,
ipfix_report_element_t *elts, u32 n_elts,
u32 *stream_index)
{
return flowprobe_template_rewrite_inline (exp, fr, collector_port,
FLOW_VARIANT_L2_IP4);
}
static u8 *
flowprobe_template_rewrite_l2_ip6 (ipfix_exporter_t *exp, flow_report_t *fr,
u16 collector_port,
ipfix_report_element_t *elts, u32 n_elts,
u32 *stream_index)
{
return flowprobe_template_rewrite_inline (exp, fr, 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, ipfix_exporter_t *exp,
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, ipfix_exporter_t *exp,
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, ipfix_exporter_t *exp,
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)
{
ipfix_exporter_t *exp = &flow_report_main.exporters[0];
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 (exp, &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);
vec_validate_init_empty (fm->direction_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 which u8 the desired datapath
* @param direction u8 the desired direction
* @param is_add int 1 to enable the feature, 0 to disable it
* @returns 0 if successful, non-zero otherwise
*/
static int
flowprobe_interface_add_del_feature (flowprobe_main_t *fm, u32 sw_if_index,
u8 which, u8 direction, 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->direction_per_interface[sw_if_index] = (is_add) ? direction : (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 (direction == FLOW_DIRECTION_RX || direction == FLOW_DIRECTION_BOTH)
{
if (which == FLOW_VARIANT_IP4)
{
vnet_feature_enable_disable ("ip4-unicast", "flowprobe-input-ip4",
sw_if_index, is_add, 0, 0);
vnet_feature_enable_disable ("ip4-multicast", "flowprobe-input-ip4",
sw_if_index, is_add, 0, 0);
}
else if (which == FLOW_VARIANT_IP6)
{
vnet_feature_enable_disable ("ip6-unicast", "flowprobe-input-ip6",
sw_if_index, is_add, 0, 0);
vnet_feature_enable_disable ("ip6-multicast", "flowprobe-input-ip6",
sw_if_index, is_add, 0, 0);
}
else if (which == FLOW_VARIANT_L2)
vnet_feature_enable_disable ("device-input", "flowprobe-input-l2",
sw_if_index, is_add, 0, 0);
}
if (direction == FLOW_DIRECTION_TX || direction == FLOW_DIRECTION_BOTH)
{
if (which == FLOW_VARIANT_IP4)
vnet_feature_enable_disable ("ip4-output", "flowprobe-output-ip4",
sw_if_index, is_add, 0, 0);
else if (which == FLOW_VARIANT_IP6)
vnet_feature_enable_disable ("ip6-output", "flowprobe-output-ip6",
sw_if_index, is_add, 0, 0);
else if (which == FLOW_VARIANT_L2)
vnet_feature_enable_disable ("interface-output", "flowprobe-output-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 (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_interface_add_del_feature (fm, sw_if_index, mp->which,
FLOW_DIRECTION_TX, mp->is_add);
out:
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO (VL_API_FLOWPROBE_TX_INTERFACE_ADD_DEL_REPLY);
}
void
vl_api_flowprobe_interface_add_del_t_handler (
vl_api_flowprobe_interface_add_del_t *mp)
{
flowprobe_main_t *fm = &flowprobe_main;
vl_api_flowprobe_interface_add_del_reply_t *rmp;
u32 sw_if_index;
u8 which;
u8 direction;
bool is_add;
int rv = 0;
VALIDATE_SW_IF_INDEX (mp);
sw_if_index = ntohl (mp->sw_if_index);
is_add = mp->is_add;
if (mp->which == FLOWPROBE_WHICH_IP4)
which = FLOW_VARIANT_IP4;
else if (mp->which == FLOWPROBE_WHICH_IP6)
which = FLOW_VARIANT_IP6;
else if (mp->which == FLOWPROBE_WHICH_L2)
which = FLOW_VARIANT_L2;
else
{
clib_warning ("Invalid value of which");
rv = VNET_API_ERROR_INVALID_VALUE;
goto out;
}
if (mp->direction == FLOWPROBE_DIRECTION_RX)
direction = FLOW_DIRECTION_RX;
else if (mp->direction == FLOWPROBE_DIRECTION_TX)
direction = FLOW_DIRECTION_TX;
else if (mp->direction == FLOWPROBE_DIRECTION_BOTH)
direction = FLOW_DIRECTION_BOTH;
else
{
clib_warning ("Invalid value of direction");
rv = VNET_API_ERROR_INVALID_VALUE;
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, which);
if (rv == 1)
{
if (is_add)
{
clib_warning ("Variant is already enabled for given interface");
rv = VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
goto out;
}
}
else if (rv == 0)
{
clib_warning ("Interface has different variant enabled");
rv = VNET_API_ERROR_ENTRY_ALREADY_EXISTS;
goto out;
}
else if (rv == -1)
{
if (!is_add)
{
clib_warning ("Interface has no variant enabled");
rv = VNET_API_ERROR_NO_SUCH_ENTRY;
goto out;
}
}
rv = flowprobe_interface_add_del_feature (fm, sw_if_index, which, direction,
is_add);
out:
BAD_SW_IF_INDEX_LABEL;
REPLY_MACRO (VL_API_FLOWPROBE_INTERFACE_ADD_DEL_REPLY);
}
static void
send_flowprobe_interface_details (u32 sw_if_index, u8 which, u8 direction,
vl_api_registration_t *reg, u32 context)
{
flowprobe_main_t *fm = &flowprobe_main;
vl_api_flowprobe_interface_details_t *rmp = 0;
rmp = vl_msg_api_alloc (sizeof (*rmp));
if (!rmp)
return;
clib_memset (rmp, 0, sizeof (*rmp));
rmp->_vl_msg_id =
ntohs (VL_API_FLOWPROBE_INTERFACE_DETAILS + REPLY_MSG_ID_BASE);
rmp->context = context;
rmp->sw_if_index = htonl (sw_if_index);
if (which == FLOW_VARIANT_IP4)
rmp->which = FLOWPROBE_WHICH_IP4;
else if (which == FLOW_VARIANT_IP6)
rmp->which = FLOWPROBE_WHICH_IP6;
else if (which == FLOW_VARIANT_L2)
rmp->which = FLOWPROBE_WHICH_L2;
else
ASSERT (0);
if (direction == FLOW_DIRECTION_RX)
rmp->direction = FLOWPROBE_DIRECTION_RX;
else if (direction == FLOW_DIRECTION_TX)
rmp->direction = FLOWPROBE_DIRECTION_TX;
else if (direction == FLOW_DIRECTION_BOTH)
rmp->direction = FLOWPROBE_DIRECTION_BOTH;
else
ASSERT (0);
vl_api_send_msg (reg, (u8 *) rmp);
}
static void
vl_api_flowprobe_interface_dump_t_handler (
vl_api_flowprobe_interface_dump_t *mp)
{
flowprobe_main_t *fm = &flowprobe_main;
vl_api_registration_t *reg;
u32 sw_if_index;
reg = vl_api_client_index_to_registration (mp->client_index);
if (!reg)
return;
sw_if_index = ntohl (mp->sw_if_index);
if (sw_if_index == ~0)
{
u8 *which;
vec_foreach (which, fm->flow_per_interface)
{
if (*which == (u8) ~0)
continue;
sw_if_index = which - fm->flow_per_interface;
send_flowprobe_interface_details (
sw_if_index, *which, fm->direction_per_interface[sw_if_index], reg,
mp->context);
}
}
else if (vec_len (fm->flow_per_interface) > sw_if_index &&
fm->flow_per_interface[sw_if_index] != (u8) ~0)
{
send_flowprobe_interface_details (
sw_if_index, fm->flow_per_interface[sw_if_index],
fm->direction_per_interface[sw_if_index], reg, mp->context);
}
}
#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 VNET_API_ERROR_UNSUPPORTED;
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_flags & FLOWPROBE_RECORD_FLAG_L2,
mp->record_flags & FLOWPROBE_RECORD_FLAG_L3,
mp->record_flags & FLOWPROBE_RECORD_FLAG_L4,
clib_net_to_host_u32 (mp->active_timer),
clib_net_to_host_u32 (mp->passive_timer));
REPLY_MACRO (VL_API_FLOWPROBE_PARAMS_REPLY);
}
void
vl_api_flowprobe_set_params_t_handler (vl_api_flowprobe_set_params_t *mp)
{
flowprobe_main_t *fm = &flowprobe_main;
vl_api_flowprobe_set_params_reply_t *rmp;
bool record_l2, record_l3, record_l4;
u32 active_timer;
u32 passive_timer;
int rv = 0;
record_l2 = (mp->record_flags & FLOWPROBE_RECORD_FLAG_L2);
record_l3 = (mp->record_flags & FLOWPROBE_RECORD_FLAG_L3);
record_l4 = (mp->record_flags & FLOWPROBE_RECORD_FLAG_L4);
active_timer = clib_net_to_host_u32 (mp->active_timer);
passive_timer = clib_net_to_host_u32 (mp->passive_timer);
if (passive_timer > 0 && active_timer > passive_timer)
{
clib_warning ("Passive timer must be greater than active timer");
rv = VNET_API_ERROR_INVALID_VALUE;
goto out;
}
rv = flowprobe_params (fm, record_l2, record_l3, record_l4, active_timer,
passive_timer);
if (rv == VNET_API_ERROR_UNSUPPORTED)
clib_warning (
"Cannot change params when feature is enabled on some interfaces");
out:
REPLY_MACRO (VL_API_FLOWPROBE_SET_PARAMS_REPLY);
}
void
vl_api_flowprobe_get_params_t_handler (vl_api_flowprobe_get_params_t *mp)
{
flowprobe_main_t *fm = &flowprobe_main;
vl_api_flowprobe_get_params_reply_t *rmp;
u8 record_flags = 0;
int rv = 0;
if (fm->record & FLOW_RECORD_L2)
record_flags |= FLOWPROBE_RECORD_FLAG_L2;
if (fm->record & FLOW_RECORD_L3)
record_flags |= FLOWPROBE_RECORD_FLAG_L3;
if (fm->record & FLOW_RECORD_L4)
record_flags |= FLOWPROBE_RECORD_FLAG_L4;
// clang-format off
REPLY_MACRO2 (VL_API_FLOWPROBE_GET_PARAMS_REPLY,
({
rmp->record_flags = record_flags;
rmp->active_timer = htonl (fm->active_timer);
rmp->passive_timer = htonl (fm->passive_timer);
}));
// clang-format on
}
/* *INDENT-OFF* */
VLIB_PLUGIN_REGISTER () = {
.version = VPP_BUILD_VER,
.description = "Flow per Packet",
};
/* *INDENT-ON* */
u8 *
format_flowprobe_direction (u8 *s, va_list *args)
{
u8 *direction = va_arg (*args, u8 *);
if (*direction == FLOW_DIRECTION_RX)
s = format (s, "rx");
else if (*direction == FLOW_DIRECTION_TX)
s = format (s, "tx");
else if (*direction == FLOW_DIRECTION_BOTH)
s = format (s, "rx tx");
return s;
}
u8 *
format_flowprobe_entry (u8 * s, va_list * args)
{
flowprobe_entry_t *e = va_arg (*args, flowprobe_entry_t *);
s = format (s, " %U", format_flowprobe_direction, &e->key.direction);
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;
}
u8 *
format_flowprobe_feature (u8 * s, va_list * args)
{
u8 *which = va_arg (*args, u8 *);
if (*which == FLOW_VARIANT_IP4)
s = format (s, "ip4");
else if (*which == FLOW_VARIANT_IP6)
s = format (s, "ip6");
else if (*which == FLOW_VARIANT_L2)
s = format (s, "l2");
return s;
}
u8 *
format_flowprobe_params (u8 * s, va_list * args)
{
flowprobe_record_t flags = va_arg (*args, flowprobe_record_t);
u32 active_timer = va_arg (*args, u32);
u32 passive_timer = va_arg (*args, u32);
if (flags & FLOW_RECORD_L2)
s = format (s, " l2");
if (flags & FLOW_RECORD_L3)
s = format (s, " l3");
if (flags & FLOW_RECORD_L4)
s = format (s, " l4");
if (active_timer != (u32) ~ 0)
s = format (s, " active: %d", active_timer);
if (passive_timer != (u32) ~ 0)
s = format (s, " passive: %d", passive_timer);
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_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;
flowprobe_direction_t direction = FLOW_DIRECTION_TX;
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 if (unformat (input, "rx"))
direction = FLOW_DIRECTION_RX;
else if (unformat (input, "tx"))
direction = FLOW_DIRECTION_TX;
else if (unformat (input, "both"))
direction = FLOW_DIRECTION_BOTH;
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 ...");
else if (rv == -1)
{
if (!is_add)
{
return clib_error_return (0, "Interface has no datapath enabled");
}
}
rv = flowprobe_interface_add_del_feature (fm, sw_if_index, which, direction,
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_show_feature_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
flowprobe_main_t *fm = &flowprobe_main;
u8 *which;
u32 sw_if_index;
vec_foreach (which, fm->flow_per_interface)
{
if (*which == (u8) ~ 0)
continue;
sw_if_index = which - fm->flow_per_interface;
vlib_cli_output (vm, " %U %U %U", format_vnet_sw_if_index_name,
vnet_get_main (), sw_if_index, format_flowprobe_feature,
which, format_flowprobe_direction,
&fm->direction_per_interface[sw_if_index]);
}
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;
}
static clib_error_t *
flowprobe_show_params_command_fn (vlib_main_t * vm,
unformat_input_t * input,
vlib_cli_command_t * cmd)
{
flowprobe_main_t *fm = &flowprobe_main;
flowprobe_record_t flags = fm->record;
u32 active_timer = fm->active_timer;
u32 passive_timer = fm->passive_timer;
vlib_cli_output (vm, "%U", format_flowprobe_params, flags, active_timer,
passive_timer);
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)] "
"[(rx|tx|both)] [disable]",
.function = flowprobe_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_feature_command, static) = {
.path = "show flowprobe feature",
.short_help =
"show flowprobe feature",
.function = flowprobe_show_feature_command_fn,
};
VLIB_CLI_COMMAND (flowprobe_show_params_command, static) = {
.path = "show flowprobe params",
.short_help =
"show flowprobe params",
.function = flowprobe_show_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* */
/*
* 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 (vlib_get_n_threads () == 0)
vec_add1 (worker_vms, vm);
else
{
for (i = 0; i < vlib_get_n_threads (); i++)
{
worker_vm = vlib_get_main_by_index (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* */
#include <flowprobe/flowprobe.api.c>
/**
* @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;
u32 num_threads;
int i;
fm->vnet_main = vnet_get_main ();
/* Ask for a correctly-sized block of API message decode slots */
fm->msg_id_base = setup_message_id_table ();
/* Set up time reference pair */
fm->vlib_time_0 = vlib_time_now (vm);
fm->nanosecond_time_0 = unix_time_now_nsec ();
clib_memset (fm->template_reports, 0, sizeof (fm->template_reports));
clib_memset (fm->template_size, 0, sizeof (fm->template_size));
clib_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:
*/