[ovs-dev,v2] ofproto-dpif-ipfix: total counters.

Submitted by mweglicx on April 20, 2017, 2:25 p.m.

Details

Message ID 1492698313-21775-1-git-send-email-michalx.weglicki@intel.com
State Accepted
Headers show

Commit Message

mweglicx April 20, 2017, 2:25 p.m.
Implementation of IPFix counters which hold
total values measured since metering process startup.

v2: Patch is reapplied for a review because
it hasn't been correctly marked in patchwork.

Signed-off-by: Michal Weglicki <michalx.weglicki@intel.com>
---
 ofproto/ofproto-dpif-ipfix.c | 110 +++++++++++++++++++++++++++++++++----------
 1 file changed, 85 insertions(+), 25 deletions(-)

Comments

Ben Pfaff May 1, 2017, 6:36 p.m.
On Thu, Apr 20, 2017 at 03:25:13PM +0100, mweglicx wrote:
> Implementation of IPFix counters which hold
> total values measured since metering process startup.
> 
> v2: Patch is reapplied for a review because
> it hasn't been correctly marked in patchwork.
> 
> Signed-off-by: Michal Weglicki <michalx.weglicki@intel.com>

Thanks a lot for working on IPFix!  I don't have IPFix expertise, and I
don't think the other OVS committers have much either, so I need to ask
some dumb questions to better understand the implications of this patch.

Actually, maybe I just need to ask one.  This changes the wire format of
the IPFix reports that go out.  Will this require changes to IPFix
collectors that understood the previous format, that is, is the new
format backward compatible with collectors that expected the previous
format?  I understand that IPFix uses a template format to tell
collectors the format of what it's sending, but it's not clear to me
whether or not that prevents this kind of compatibility issue.

Thanks,

Ben.
mweglicx May 8, 2017, 9:22 a.m.
> -----Original Message-----
> From: Ben Pfaff [mailto:blp@ovn.org]
> Sent: Monday, May 1, 2017 7:36 PM
> To: Weglicki, MichalX <michalx.weglicki@intel.com>
> Cc: dev@openvswitch.org
> Subject: Re: [ovs-dev] [PATCH v2] ofproto-dpif-ipfix: total counters.
> 
> On Thu, Apr 20, 2017 at 03:25:13PM +0100, mweglicx wrote:
> > Implementation of IPFix counters which hold
> > total values measured since metering process startup.
> >
> > v2: Patch is reapplied for a review because
> > it hasn't been correctly marked in patchwork.
> >
> > Signed-off-by: Michal Weglicki <michalx.weglicki@intel.com>
> 
> Thanks a lot for working on IPFix!  I don't have IPFix expertise, and I
> don't think the other OVS committers have much either, so I need to ask
> some dumb questions to better understand the implications of this patch.
> 
> Actually, maybe I just need to ask one.  This changes the wire format of
> the IPFix reports that go out.  Will this require changes to IPFix
> collectors that understood the previous format, that is, is the new
> format backward compatible with collectors that expected the previous
> format?  I understand that IPFix uses a template format to tell
> collectors the format of what it's sending, but it's not clear to me
> whether or not that prevents this kind of compatibility issue.
> 
> Thanks,
> 
> Ben.

Hello Ben, 

So counters which just got exposed through my patch are part of RFC 
which is already partially implemented in OVS. I've just added few 
missing ones, and I'm going to implement also others from same 
category (https://tools.ietf.org/html/rfc5102#section-5.10) 

However to answer your question directly those counters are 
part of standard group of IPFix counters, so no changes on 
Collector side are required. IPFix sends counters in kind of
dictionary format, so adding any counter shouldn't break 
backward compatibility - IPFix even defines something like
enterprise counters (vendor specific) where any agent can 
define own counters in the template and send those over 
(not every collector supports it, but data-wise it shouldn't 
break anything on collector side). 

My patch was also tested against libipfix/ipfix_collector
and no additional changes were required to see new 
counters on collector side. 

Br, 
Michal. 

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Ben Pfaff May 8, 2017, 1:07 p.m.
On Mon, May 08, 2017 at 09:22:42AM +0000, Weglicki, MichalX wrote:
> > -----Original Message-----
> > From: Ben Pfaff [mailto:blp@ovn.org]
> > Sent: Monday, May 1, 2017 7:36 PM
> > To: Weglicki, MichalX <michalx.weglicki@intel.com>
> > Cc: dev@openvswitch.org
> > Subject: Re: [ovs-dev] [PATCH v2] ofproto-dpif-ipfix: total counters.
> > 
> > On Thu, Apr 20, 2017 at 03:25:13PM +0100, mweglicx wrote:
> > > Implementation of IPFix counters which hold
> > > total values measured since metering process startup.
> > >
> > > v2: Patch is reapplied for a review because
> > > it hasn't been correctly marked in patchwork.
> > >
> > > Signed-off-by: Michal Weglicki <michalx.weglicki@intel.com>
> > 
> > Thanks a lot for working on IPFix!  I don't have IPFix expertise, and I
> > don't think the other OVS committers have much either, so I need to ask
> > some dumb questions to better understand the implications of this patch.
> > 
> > Actually, maybe I just need to ask one.  This changes the wire format of
> > the IPFix reports that go out.  Will this require changes to IPFix
> > collectors that understood the previous format, that is, is the new
> > format backward compatible with collectors that expected the previous
> > format?  I understand that IPFix uses a template format to tell
> > collectors the format of what it's sending, but it's not clear to me
> > whether or not that prevents this kind of compatibility issue.
> > 
> > Thanks,
> > 
> > Ben.
> 
> Hello Ben, 
> 
> So counters which just got exposed through my patch are part of RFC 
> which is already partially implemented in OVS. I've just added few 
> missing ones, and I'm going to implement also others from same 
> category (https://tools.ietf.org/html/rfc5102#section-5.10) 
> 
> However to answer your question directly those counters are 
> part of standard group of IPFix counters, so no changes on 
> Collector side are required. IPFix sends counters in kind of
> dictionary format, so adding any counter shouldn't break 
> backward compatibility - IPFix even defines something like
> enterprise counters (vendor specific) where any agent can 
> define own counters in the template and send those over 
> (not every collector supports it, but data-wise it shouldn't 
> break anything on collector side). 
> 
> My patch was also tested against libipfix/ipfix_collector
> and no additional changes were required to see new 
> counters on collector side. 

Thanks for the reassurance!  I'll take a closer look at the patch now.
Ben Pfaff May 8, 2017, 1:17 p.m.
On Thu, Apr 20, 2017 at 03:25:13PM +0100, mweglicx wrote:
> Implementation of IPFix counters which hold
> total values measured since metering process startup.
> 
> v2: Patch is reapplied for a review because
> it hasn't been correctly marked in patchwork.
> 
> Signed-off-by: Michal Weglicki <michalx.weglicki@intel.com>

I applied this to master.  Thank you for improving Open vSwitch support
for IPFIX!

Patch hide | download patch | download mbox

diff --git a/ofproto/ofproto-dpif-ipfix.c b/ofproto/ofproto-dpif-ipfix.c
index 3f90f21..3de81a9 100644
--- a/ofproto/ofproto-dpif-ipfix.c
+++ b/ofproto/ofproto-dpif-ipfix.c
@@ -84,6 +84,13 @@  enum dpif_ipfix_tunnel_type {
 
 typedef struct ofputil_ipfix_stats ofproto_ipfix_stats;
 
+struct dpif_ipfix_global_stats {
+    uint64_t packet_total_count;
+    uint64_t octet_total_count;
+    uint64_t octet_total_sum_of_squares;
+    uint64_t layer2_octet_total_count;
+};
+
 struct dpif_ipfix_port {
     struct hmap_node hmap_node; /* In struct dpif_ipfix's "tunnel_ports" hmap. */
     struct ofport *ofport;      /* To retrieve port stats. */
@@ -103,7 +110,8 @@  struct dpif_ipfix_exporter {
     char *virtual_obs_id;
     uint8_t virtual_obs_len;
 
-    ofproto_ipfix_stats stats;
+    ofproto_ipfix_stats ofproto_stats;
+    struct dpif_ipfix_global_stats ipfix_global_stats;
 };
 
 struct dpif_ipfix_bridge_exporter {
@@ -348,20 +356,24 @@  struct ipfix_data_record_aggregated_common {
     ovs_be32 flow_start_delta_microseconds; /* FLOW_START_DELTA_MICROSECONDS */
     ovs_be32 flow_end_delta_microseconds; /* FLOW_END_DELTA_MICROSECONDS */
     ovs_be64 packet_delta_count;  /* PACKET_DELTA_COUNT */
+    ovs_be64 packet_total_count;  /* PACKET_DELTA_COUNT */
     ovs_be64 layer2_octet_delta_count;  /* LAYER2_OCTET_DELTA_COUNT */
+    ovs_be64 layer2_octet_total_count;  /* LAYER2_OCTET_DELTA_COUNT */
     uint8_t flow_end_reason;  /* FLOW_END_REASON */
 });
-BUILD_ASSERT_DECL(sizeof(struct ipfix_data_record_aggregated_common) == 25);
+BUILD_ASSERT_DECL(sizeof(struct ipfix_data_record_aggregated_common) == 41);
 
 /* Part of data record for IP aggregated elements. */
 OVS_PACKED(
 struct ipfix_data_record_aggregated_ip {
     ovs_be64 octet_delta_count;  /* OCTET_DELTA_COUNT */
+    ovs_be64 octet_total_count;  /* OCTET_TOTAL_COUNT */
     ovs_be64 octet_delta_sum_of_squares;  /* OCTET_DELTA_SUM_OF_SQUARES */
+    ovs_be64 octet_total_sum_of_squares;  /* OCTET_TOTAL_SUM_OF_SQUARES */
     ovs_be64 minimum_ip_total_length;  /* MINIMUM_IP_TOTAL_LENGTH */
     ovs_be64 maximum_ip_total_length;  /* MAXIMUM_IP_TOTAL_LENGTH */
 });
-BUILD_ASSERT_DECL(sizeof(struct ipfix_data_record_aggregated_ip) == 32);
+BUILD_ASSERT_DECL(sizeof(struct ipfix_data_record_aggregated_ip) == 48);
 
 /*
  * Refer to RFC 7011, the length of Variable length element is 0~65535:
@@ -444,9 +456,13 @@  struct ipfix_flow_cache_entry {
     uint64_t flow_start_timestamp_usec;
     uint64_t flow_end_timestamp_usec;
     uint64_t packet_delta_count;
+    uint64_t packet_total_count;
     uint64_t layer2_octet_delta_count;
+    uint64_t layer2_octet_total_count;
     uint64_t octet_delta_count;
+    uint64_t octet_total_count;
     uint64_t octet_delta_sum_of_squares;  /* 0 if not IP. */
+    uint64_t octet_total_sum_of_squares;  /* 0 if not IP. */
     uint16_t minimum_ip_total_length;  /* 0 if not IP. */
     uint16_t maximum_ip_total_length;  /* 0 if not IP. */
 };
@@ -544,6 +560,9 @@  dpif_ipfix_exporter_init(struct dpif_ipfix_exporter *exporter)
     exporter->cache_max_flows = 0;
     exporter->virtual_obs_id = NULL;
     exporter->virtual_obs_len = 0;
+
+    memset(&exporter->ipfix_global_stats, 0,
+           sizeof(struct dpif_ipfix_global_stats));
 }
 
 static void
@@ -561,6 +580,9 @@  dpif_ipfix_exporter_clear(struct dpif_ipfix_exporter *exporter)
     free(exporter->virtual_obs_id);
     exporter->virtual_obs_id = NULL;
     exporter->virtual_obs_len = 0;
+
+    memset(&exporter->ipfix_global_stats, 0,
+           sizeof(struct dpif_ipfix_global_stats));
 }
 
 static void
@@ -1199,12 +1221,16 @@  ipfix_define_template_fields(enum ipfix_proto_l2 l2, enum ipfix_proto_l3 l3,
     DEF(FLOW_START_DELTA_MICROSECONDS);
     DEF(FLOW_END_DELTA_MICROSECONDS);
     DEF(PACKET_DELTA_COUNT);
+    DEF(PACKET_TOTAL_COUNT);
     DEF(LAYER2_OCTET_DELTA_COUNT);
+    DEF(LAYER2_OCTET_TOTAL_COUNT);
     DEF(FLOW_END_REASON);
 
     if (l3 != IPFIX_PROTO_L3_UNKNOWN) {
         DEF(OCTET_DELTA_COUNT);
+        DEF(OCTET_TOTAL_COUNT);
         DEF(OCTET_DELTA_SUM_OF_SQUARES);
+        DEF(OCTET_TOTAL_SUM_OF_SQUARES);
         DEF(MINIMUM_IP_TOTAL_LENGTH);
         DEF(MAXIMUM_IP_TOTAL_LENGTH);
     }
@@ -1316,8 +1342,8 @@  ipfix_send_template_msgs(struct dpif_ipfix_exporter *exporter,
     tx_errors += error_pkts;
     tx_packets += collectors_count(exporter->collectors) - error_pkts;
 
-    exporter->stats.tx_pkts += tx_packets;
-    exporter->stats.tx_errors += tx_errors;
+    exporter->ofproto_stats.tx_pkts += tx_packets;
+    exporter->ofproto_stats.tx_errors += tx_errors;
 
     /* XXX: Add Options Template Sets, at least to define a Flow Keys
      * Option Template. */
@@ -1402,10 +1428,17 @@  ipfix_cache_aggregate_entries(struct ipfix_flow_cache_entry *from_entry,
     to_entry->packet_delta_count += from_entry->packet_delta_count;
     to_entry->layer2_octet_delta_count += from_entry->layer2_octet_delta_count;
 
+    to_entry->packet_total_count = from_entry->packet_total_count;
+    to_entry->layer2_octet_total_count = from_entry->layer2_octet_total_count;
+
     to_entry->octet_delta_count += from_entry->octet_delta_count;
     to_entry->octet_delta_sum_of_squares +=
         from_entry->octet_delta_sum_of_squares;
 
+    to_entry->octet_total_count = from_entry->octet_total_count;
+    to_entry->octet_total_sum_of_squares =
+        from_entry->octet_total_sum_of_squares;
+
     to_min_len = &to_entry->minimum_ip_total_length;
     to_max_len = &to_entry->maximum_ip_total_length;
     from_min_len = &from_entry->minimum_ip_total_length;
@@ -1430,7 +1463,7 @@  ipfix_get_stats__(const struct dpif_ipfix_exporter *exporter,
         return;
     }
 
-    *stats = exporter->stats;
+    *stats = exporter->ofproto_stats;
 }
 
 static void
@@ -1491,28 +1524,28 @@  ipfix_update_stats(struct dpif_ipfix_exporter *exporter,
                    enum ipfix_sampled_packet_type sampled_pkt_type)
 {
     if (new_flow) {
-        exporter->stats.total_flows++;
-        exporter->stats.current_flows = current_flows;
+        exporter->ofproto_stats.total_flows++;
+        exporter->ofproto_stats.current_flows = current_flows;
     }
-    exporter->stats.pkts++;
+    exporter->ofproto_stats.pkts++;
 
     switch (sampled_pkt_type) {
     case IPFIX_SAMPLED_PKT_IPV4_OK:
-        exporter->stats.ipv4_pkts++;
+        exporter->ofproto_stats.ipv4_pkts++;
         break;
     case IPFIX_SAMPLED_PKT_IPV6_OK:
-        exporter->stats.ipv6_pkts++;
+        exporter->ofproto_stats.ipv6_pkts++;
         break;
     case IPFIX_SAMPLED_PKT_IPV4_ERROR:
-        exporter->stats.ipv4_error_pkts++;
-        exporter->stats.error_pkts++;
+        exporter->ofproto_stats.ipv4_error_pkts++;
+        exporter->ofproto_stats.error_pkts++;
         break;
     case IPFIX_SAMPLED_PKT_IPV6_ERROR:
-        exporter->stats.ipv6_error_pkts++;
-        exporter->stats.error_pkts++;
+        exporter->ofproto_stats.ipv6_error_pkts++;
+        exporter->ofproto_stats.error_pkts++;
         break;
     case IPFIX_SAMPLED_PKT_UNKNOWN:
-        exporter->stats.error_pkts++;
+        exporter->ofproto_stats.error_pkts++;
         break;
     case IPFIX_SAMPLED_PKT_OTHERS:
     default:
@@ -1563,7 +1596,8 @@  ipfix_cache_entry_init(struct ipfix_flow_cache_entry *entry,
                        uint32_t obs_point_id, odp_port_t output_odp_port,
                        enum nx_action_sample_direction direction,
                        const struct dpif_ipfix_port *tunnel_port,
-                       const struct flow_tnl *tunnel_key)
+                       const struct flow_tnl *tunnel_key,
+                       struct dpif_ipfix_global_stats * stats)
 {
     struct ipfix_flow_key *flow_key;
     struct dp_packet msg;
@@ -1751,6 +1785,12 @@  ipfix_cache_entry_init(struct ipfix_flow_cache_entry *entry,
         entry->flow_start_timestamp_usec = entry->flow_end_timestamp_usec;
         entry->packet_delta_count = packet_delta_count;
         entry->layer2_octet_delta_count = layer2_octet_delta_count;
+
+        stats->packet_total_count += packet_delta_count;
+        stats->layer2_octet_total_count += layer2_octet_delta_count;
+        entry->packet_total_count = stats->packet_total_count;
+        entry->layer2_octet_total_count = stats->layer2_octet_total_count;
+
     }
 
     if (l3 != IPFIX_PROTO_L3_UNKNOWN) {
@@ -1767,8 +1807,16 @@  ipfix_cache_entry_init(struct ipfix_flow_cache_entry *entry,
         entry->octet_delta_sum_of_squares = octet_delta_count * ip_total_length;
         entry->minimum_ip_total_length = ip_total_length;
         entry->maximum_ip_total_length = ip_total_length;
+
+        stats->octet_total_count += octet_delta_count;
+        stats->octet_total_sum_of_squares += entry->octet_delta_sum_of_squares;
+        entry->octet_total_count = stats->octet_total_count;
+        entry->octet_total_sum_of_squares = stats->octet_total_sum_of_squares;
+
     } else {
         entry->octet_delta_sum_of_squares = 0;
+        entry->octet_total_sum_of_squares = stats->octet_total_sum_of_squares;
+        entry->octet_total_count = stats->octet_total_count;
         entry->minimum_ip_total_length = 0;
         entry->maximum_ip_total_length = 0;
     }
@@ -1830,8 +1878,12 @@  ipfix_put_data_set(uint32_t export_time_sec,
             flow_end_delta_usec);
         data_aggregated_common->packet_delta_count = htonll(
             entry->packet_delta_count);
+        data_aggregated_common->packet_total_count = htonll(
+            entry->packet_total_count);
         data_aggregated_common->layer2_octet_delta_count = htonll(
             entry->layer2_octet_delta_count);
+        data_aggregated_common->layer2_octet_total_count = htonll(
+            entry->layer2_octet_total_count);
         data_aggregated_common->flow_end_reason = flow_end_reason;
     }
 
@@ -1842,8 +1894,12 @@  ipfix_put_data_set(uint32_t export_time_sec,
             msg, sizeof *data_aggregated_ip);
         data_aggregated_ip->octet_delta_count = htonll(
             entry->octet_delta_count);
+        data_aggregated_ip->octet_total_count = htonll(
+            entry->octet_total_count);
         data_aggregated_ip->octet_delta_sum_of_squares = htonll(
             entry->octet_delta_sum_of_squares);
+        data_aggregated_ip->octet_total_sum_of_squares = htonll(
+            entry->octet_total_sum_of_squares);
         data_aggregated_ip->minimum_ip_total_length = htonll(
             entry->minimum_ip_total_length);
         data_aggregated_ip->maximum_ip_total_length = htonll(
@@ -1876,9 +1932,10 @@  ipfix_send_data_msg(struct dpif_ipfix_exporter *exporter,
 
     dp_packet_uninit(&msg);
 
-    exporter->stats.current_flows--;
-    exporter->stats.tx_pkts += collectors_count(exporter->collectors) - tx_errors;
-    exporter->stats.tx_errors += tx_errors;
+    exporter->ofproto_stats.current_flows--;
+    exporter->ofproto_stats.tx_pkts +=
+            collectors_count(exporter->collectors) - tx_errors;
+    exporter->ofproto_stats.tx_errors += tx_errors;
 }
 
 static void
@@ -1895,11 +1952,14 @@  dpif_ipfix_sample(struct dpif_ipfix_exporter *exporter,
 
     /* Create a flow cache entry from the sample. */
     entry = xmalloc(sizeof *entry);
-    sampled_packet_type = ipfix_cache_entry_init(entry, packet,
-                                                 flow, packet_delta_count,
-                                                 obs_domain_id, obs_point_id,
-                                                 output_odp_port, direction,
-                                                 tunnel_port, tunnel_key);
+    sampled_packet_type =
+            ipfix_cache_entry_init(entry, packet,
+                                   flow, packet_delta_count,
+                                   obs_domain_id, obs_point_id,
+                                   output_odp_port, direction,
+                                   tunnel_port, tunnel_key,
+                                   &exporter->ipfix_global_stats);
+
     ipfix_cache_update(exporter, entry, sampled_packet_type);
 }