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authorAkshayaNadahalli <anadahal@cisco.com>2016-12-01 16:33:51 +0530
committerNeale Ranns <nranns@cisco.com>2017-02-13 08:36:59 +0000
commitfdd81af6afe6c782ad2c1a139210378badec626b (patch)
treeb562b391bded3afc0f5b4d0f83eceb20f2c8e772 /src/plugins/ioam/analyse/ioam_summary_export.c
parentfed79e83910459ed700615d2a5a24024f835a66c (diff)
VPP-632 : InBand OAM Analyser
Refer to jira ticket for more details. Change-Id: I6facb9ef8553a21464f9a2e612706f152badbb68 Signed-off-by: AkshayaNadahalli <anadahal@cisco.com>
Diffstat (limited to 'src/plugins/ioam/analyse/ioam_summary_export.c')
-rw-r--r--src/plugins/ioam/analyse/ioam_summary_export.c437
1 files changed, 437 insertions, 0 deletions
diff --git a/src/plugins/ioam/analyse/ioam_summary_export.c b/src/plugins/ioam/analyse/ioam_summary_export.c
new file mode 100644
index 00000000000..0056732327c
--- /dev/null
+++ b/src/plugins/ioam/analyse/ioam_summary_export.c
@@ -0,0 +1,437 @@
+/*
+ * 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/ip/ip6_packet.h>
+#include <ioam/analyse/ioam_summary_export.h>
+#include <ioam/analyse/ip6/ip6_ioam_analyse.h>
+
+u8 *
+ioam_template_rewrite (flow_report_main_t * frm, flow_report_t * fr,
+ ip4_address_t * collector_address,
+ ip4_address_t * src_address, u16 collector_port)
+{
+ ip4_header_t *ip;
+ udp_header_t *udp;
+ ipfix_message_header_t *h;
+ ipfix_set_header_t *s;
+ ipfix_template_header_t *t;
+ ipfix_field_specifier_t *f;
+ ipfix_field_specifier_t *first_field;
+ u8 *rewrite = 0;
+ ip4_ipfix_template_packet_t *tp;
+ u32 field_count = 0;
+ u32 field_index = 0;
+ flow_report_stream_t *stream;
+
+ stream = &frm->streams[fr->stream_index];
+
+ /* Determine field count */
+#define _(field,mask,item,length) \
+ { \
+ field_count++; \
+ fr->fields_to_send = clib_bitmap_set (fr->fields_to_send, \
+ field_index, 1); \
+ } \
+ field_index++;
+
+ foreach_ioam_ipfix_field;
+#undef _
+
+ /* Add Src address, dest address, src port, dest port
+ * path map, number of paths manually */
+ field_count += 6;
+
+ /* 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 (collector_port);
+ udp->dst_port = clib_host_to_net_u16 (UDP_DST_PORT_ipfix);
+ udp->length = clib_host_to_net_u16 (vec_len (rewrite) - sizeof (*ip));
+
+ h->domain_id = clib_host_to_net_u32 (stream->domain_id); //fr->domain_id);
+
+ /* Add Src address, dest address, src port, dest port
+ * path map, number of paths manually */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ sourceIPv6Address,
+ sizeof (ip6_address_t));
+ f++;
+
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ destinationIPv6Address,
+ sizeof (ip6_address_t));
+ f++;
+
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ sourceTransportPort, 2);
+ f++;
+
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ destinationTransportPort, 2);
+ f++;
+
+#define _(field,mask,item,length) \
+ { \
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */, \
+ item, length); \
+ f++; \
+ }
+ foreach_ioam_ipfix_field;
+#undef _
+
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ ioamNumberOfPaths, 2);
+ f++;
+
+ /* Add ioamPathMap manually */
+ f->e_id_length = ipfix_e_id_length (0 /* enterprise */ ,
+ ioamPathMap, (1 * sizeof (ioam_path)));
+ 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 (IOAM_FLOW_TEMPLATE_ID, f - first_field);
+
+ /* set length in octets */
+ s->set_id_length =
+ ipfix_set_id_length (2 /* set_id */ , (u8 *) f - (u8 *) s);
+
+ /* message length in octets */
+ h->version_length = version_length ((u8 *) f - (u8 *) h);
+
+ ip->length = clib_host_to_net_u16 ((u8 *) f - (u8 *) ip);
+ ip->checksum = ip4_header_checksum (ip);
+
+ return rewrite;
+}
+
+u16
+ioam_analyse_add_ipfix_record (flow_report_t * fr,
+ ioam_analyser_data_t * record,
+ vlib_buffer_t * b0, u16 offset,
+ ip6_address_t * src, ip6_address_t * dst,
+ u16 src_port, u16 dst_port)
+{
+ while (__sync_lock_test_and_set (record->writer_lock, 1))
+ ;
+
+ int field_index = 0;
+ u16 tmp;
+ int i, j;
+ u16 num_paths = 0;
+ u16 num_paths_offset;
+
+
+ /* Add IPv6 source address manually */
+ memcpy (b0->data + offset, &src->as_u64[0], sizeof (u64));
+ offset += sizeof (u64);
+ memcpy (b0->data + offset, &src->as_u64[1], sizeof (u64));
+ offset += sizeof (u64);
+
+ /* Add IPv6 destination address manually */
+ memcpy (b0->data + offset, &dst->as_u64[0], sizeof (u64));
+ offset += sizeof (u64);
+ memcpy (b0->data + offset, &dst->as_u64[1], sizeof (u64));
+ offset += sizeof (u64);
+
+ /* Add source port manually */
+ tmp = clib_host_to_net_u16 (src_port);
+ memcpy (b0->data + offset, &tmp, sizeof (u16));
+ offset += sizeof (u16);
+
+ /* Add dest port manually */
+ tmp = clib_host_to_net_u16 (dst_port);
+ memcpy (b0->data + offset, &tmp, sizeof (u16));
+ offset += sizeof (u16);
+
+#define _(field,mask,item,length) \
+ if (clib_bitmap_get (fr->fields_to_send, field_index)) \
+ { \
+ /* Expect only 4 bytes */ \
+ u32 tmp; \
+ tmp = clib_host_to_net_u32((u32)record->field - (u32)record->chached_data_list->field);\
+ memcpy (b0->data + offset, &tmp, length); \
+ offset += length; \
+ }
+ field_index++;
+ foreach_ioam_ipfix_field;
+#undef _
+
+ /* Store num_paths_offset here and update later */
+ num_paths_offset = offset;
+ offset += sizeof (u16);
+
+ /* Add ioamPathMap manually */
+ for (i = 0; i < IOAM_MAX_PATHS_PER_FLOW; i++)
+ {
+ ioam_analyse_trace_record *trace = record->trace_data.path_data + i;
+ ioam_analyse_trace_record *trace_cached =
+ record->chached_data_list->trace_data.path_data + i;
+ ioam_path *path = (ioam_path *) (b0->data + offset);
+
+ if (!trace->is_free)
+ {
+ num_paths++;
+
+ path->num_nodes = trace->num_nodes;
+
+ path->trace_type = trace->trace_type;
+ if (0 < (trace->pkt_counter - trace_cached->pkt_counter))
+ {
+ u64 new_sum = trace->mean_delay * record->seqno_data.rx_packets;
+ u64 old_sum =
+ trace_cached->mean_delay *
+ record->chached_data_list->seqno_data.rx_packets;
+ path->mean_delay =
+ (u32) ((new_sum - old_sum) / (trace->pkt_counter -
+ trace_cached->pkt_counter));
+ path->mean_delay = clib_host_to_net_u32 (path->mean_delay);
+ }
+ else
+ path->mean_delay = 0;
+
+ path->bytes_counter =
+ trace->bytes_counter - trace_cached->bytes_counter;
+ path->bytes_counter = clib_host_to_net_u32 (path->bytes_counter);
+
+ path->pkt_counter = trace->pkt_counter - trace_cached->pkt_counter;
+ path->pkt_counter = clib_host_to_net_u32 (path->pkt_counter);
+
+ for (j = 0; j < IOAM_TRACE_MAX_NODES; j++)
+ {
+ path->path[j].node_id =
+ clib_host_to_net_u32 (trace->path[j].node_id);
+ path->path[j].ingress_if =
+ clib_host_to_net_u16 (trace->path[j].ingress_if);
+ path->path[j].egress_if =
+ clib_host_to_net_u16 (trace->path[j].egress_if);
+ }
+
+ offset += sizeof (ioam_path);
+ }
+ }
+
+ num_paths = clib_host_to_net_u16 (num_paths);
+ memcpy (b0->data + num_paths_offset, &num_paths, sizeof (u16));
+
+ /* Update cache */
+ *(record->chached_data_list) = *record;
+ record->chached_data_list->chached_data_list = NULL;
+
+ *(record->writer_lock) = 0;
+ return offset;
+}
+
+vlib_frame_t *
+ioam_send_flows (flow_report_main_t * frm, flow_report_t * fr,
+ vlib_frame_t * f, u32 * to_next, u32 node_index)
+{
+ vlib_buffer_t *b0 = NULL;
+ u32 next_offset = 0;
+ u32 bi0 = ~0;
+ int i;
+ ip4_ipfix_template_packet_t *tp;
+ ipfix_message_header_t *h;
+ ipfix_set_header_t *s = NULL;
+ ip4_header_t *ip;
+ udp_header_t *udp;
+ u32 records_this_buffer;
+ u16 new_l0, old_l0;
+ ip_csum_t sum0;
+ vlib_main_t *vm = frm->vlib_main;
+ ip6_address_t temp;
+ ioam_analyser_data_t *record = NULL;
+ flow_report_stream_t *stream;
+ ioam_analyser_data_t *aggregated_data;
+ u16 data_len;
+
+ stream = &frm->streams[fr->stream_index];
+
+ memset (&temp, 0, sizeof (ip6_address_t));
+
+ aggregated_data = ioam_analyser_main.aggregated_data;
+ data_len = vec_len (aggregated_data);
+
+ vec_foreach_index (i, aggregated_data)
+ {
+ u8 flush = 0;
+ record = aggregated_data + i;
+
+ /* Flush if last entry */
+ if (i == (data_len - 1))
+ flush = 1;
+
+ if (!record->is_free)
+ {
+
+ if (PREDICT_FALSE (b0 == NULL))
+ {
+ if (vlib_buffer_alloc (vm, &bi0, 1) != 1)
+ break;
+
+ b0 = vlib_get_buffer (vm, bi0);
+ memcpy (b0->data, fr->rewrite, vec_len (fr->rewrite));
+ b0->current_data = 0;
+ b0->current_length = vec_len (fr->rewrite);
+ b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ vnet_buffer (b0)->sw_if_index[VLIB_RX] = 0;
+ vnet_buffer (b0)->sw_if_index[VLIB_TX] = ~0;
+
+ tp = vlib_buffer_get_current (b0);
+ ip = &tp->ip4;
+ udp = &tp->udp;
+ h = &tp->ipfix.h;
+ s = &tp->ipfix.s;
+
+ /* FIXUP: message header export_time */
+ h->export_time = clib_host_to_net_u32 (((u32) time (NULL)));
+
+ /* FIXUP: message header sequence_number */
+ h->sequence_number = stream->sequence_number++;
+ h->sequence_number = clib_host_to_net_u32 (h->sequence_number);
+ next_offset = (u32) (((u8 *) (s + 1)) - (u8 *) tp);
+ records_this_buffer = 0;
+ }
+
+ next_offset = ioam_analyse_add_ipfix_record (fr, record,
+ b0, next_offset,
+ &temp, &temp, 0, 0);
+ records_this_buffer++;
+
+ /* Flush data if packet len is about to reach path mtu */
+ if (next_offset > (frm->path_mtu - 250))
+ flush = 1;
+ }
+
+ if (PREDICT_FALSE (flush && b0))
+ {
+ s->set_id_length = ipfix_set_id_length (IOAM_FLOW_TEMPLATE_ID,
+ next_offset - (sizeof (*ip) +
+ sizeof (*udp) +
+ sizeof (*h)));
+ b0->current_length = next_offset;
+ b0->flags |= VLIB_BUFFER_TOTAL_LENGTH_VALID;
+ tp = vlib_buffer_get_current (b0);
+ ip = (ip4_header_t *) & tp->ip4;
+ udp = (udp_header_t *) (ip + 1);
+
+ sum0 = ip->checksum;
+ old_l0 = ip->length;
+ new_l0 = clib_host_to_net_u16 ((u16) next_offset);
+ sum0 = ip_csum_update (sum0, old_l0, new_l0, ip4_header_t,
+ length /* changed member */ );
+
+ ip->checksum = ip_csum_fold (sum0);
+ ip->length = new_l0;
+ 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;
+ }
+
+ to_next[0] = bi0;
+ f->n_vectors++;
+ to_next++;
+
+ if (f->n_vectors == VLIB_FRAME_SIZE)
+ {
+ vlib_put_frame_to_node (vm, node_index, f);
+ f = vlib_get_frame_to_node (vm, node_index);
+ f->n_vectors = 0;
+ to_next = vlib_frame_vector_args (f);
+ }
+ b0 = 0;
+ bi0 = ~0;
+ }
+ }
+
+ return f;
+}
+
+clib_error_t *
+ioam_flow_create (u8 del)
+{
+ vnet_flow_report_add_del_args_t args;
+ int rv;
+ u32 domain_id = 0;
+ flow_report_main_t *frm = &flow_report_main;
+
+ args.rewrite_callback = ioam_template_rewrite;
+ args.flow_data_callback = ioam_send_flows;
+ del ? (args.is_add = 0) : (args.is_add = 1);
+ args.domain_id = domain_id;
+
+ rv = vnet_flow_report_add_del (frm, &args);
+
+ switch (rv)
+ {
+ case 0:
+ break;
+ case VNET_API_ERROR_NO_SUCH_ENTRY:
+ return clib_error_return (0, "registration not found...");
+ default:
+ return clib_error_return (0, "vnet_flow_report_add_del returned %d",
+ rv);
+ }
+
+ return 0;
+}
+
+clib_error_t *
+ioam_flow_report_init (vlib_main_t * vm)
+{
+ clib_error_t *error;
+
+ if ((error = vlib_call_init_function (vm, flow_report_init)))
+ return error;
+
+ return 0;
+}
+
+VLIB_INIT_FUNCTION (ioam_flow_report_init);
+
+/*
+ * fd.io coding-style-patch-verification: ON
+ *
+ * Local Variables:
+ * eval: (c-set-style "gnu")
+ * End:
+ */