From 810dd7d0a48c17679e385b93d595a92b51254ce4 Mon Sep 17 00:00:00 2001
From: Ido Barnea <ibarnea@cisco.com>
Date: Wed, 20 Jul 2016 10:19:11 +0300
Subject: ipv6 flow stat on vm working

---
 src/flow_stat_parser.h | 87 ++++++++++++++++++++++++++++++++++++++++++++++++--
 1 file changed, 84 insertions(+), 3 deletions(-)

(limited to 'src/flow_stat_parser.h')

diff --git a/src/flow_stat_parser.h b/src/flow_stat_parser.h
index b4f01900..d44c8a7f 100644
--- a/src/flow_stat_parser.h
+++ b/src/flow_stat_parser.h
@@ -22,27 +22,65 @@
 #ifndef __FLOW_STAT_PARSER_H__
 #define __FLOW_STAT_PARSER_H__
 
-// Basic flow stat parser. Relevant for xl710/x710/x350 cards
+#include <arpa/inet.h>
 #include "common/Network/Packet/IPHeader.h"
+#include "common/Network/Packet/IPv6Header.h"
+#include "common/Network/Packet/TcpHeader.h"
+#include "mbuf.h"
 
+// Basic flow stat parser. Relevant for xl710/x710/x350 cards
 class CFlowStatParser {
  public:
     virtual ~CFlowStatParser() {}
     virtual void reset();
     virtual int parse(uint8_t *pkt, uint16_t len);
     virtual bool is_stat_supported() {return m_stat_supported == true;}
-    virtual int get_ip_id(uint16_t &ip_id);
-    virtual int set_ip_id(uint16_t ip_id);
+    virtual int get_ip_id(uint32_t &ip_id);
+    virtual int set_ip_id(uint32_t ip_id);
     virtual int get_l4_proto(uint8_t &proto);
     virtual int get_payload_len(uint8_t *p, uint16_t len, uint16_t &payload_len);
+    virtual uint16_t get_pkt_size();
+    virtual uint8_t get_ttl();
     virtual int test();
+    uint8_t *get_l3() {
+        if (m_ipv4)
+            return (uint8_t *)m_ipv4;
+        else
+            return (uint8_t *)m_ipv6;
+    }
+    uint8_t * get_l4() {return m_l4;}
+
+    inline bool IsNatInfoPkt(bool &first) {
+        if (!m_ipv4 || (m_l4_proto != IPPROTO_TCP)) {
+            return false;
+        }
+        if ((m_l4 + TCP_HEADER_LEN) > (uint8_t *)m_ipv4 + get_pkt_size()) {
+            return false;
+        }
+        // If we are here, relevant fields from tcp header are inside the packet boundaries
+        // We want to handle SYN and SYN+ACK packets
+        TCPHeader *tcp = (TCPHeader *)m_l4;
+        if (! tcp->getSynFlag())
+            return false;
+
+        if (! tcp->getAckFlag()) {
+            first = true;
+        } else {
+            first = false;
+        }
+        return true;
+    }
 
  protected:
     IPHeader *m_ipv4;
+    IPv6Header *m_ipv6;
+    uint8_t *m_l4;
     bool m_stat_supported;
     uint8_t m_l4_proto;
+    uint8_t m_vlan_offset;
 };
 
+// relevant for 82599 card
 class C82599Parser : public CFlowStatParser {
  public:
     C82599Parser(bool vlan_supported) {m_vlan_supported = vlan_supported;}
@@ -53,4 +91,47 @@ class C82599Parser : public CFlowStatParser {
     bool m_vlan_supported;
 };
 
+// Used for latency statefull packets. Need to be merged with above parser
+class CSimplePacketParser {
+ public:
+    CSimplePacketParser(rte_mbuf_t * m){
+        m_m = m;
+        m_l4 = NULL;
+    }
+    bool Parse();
+
+    // Check if this packet contains NAT info in TCP ack
+    // first - set to true if this is the first packet of the flow. false otherwise.
+    //         relevant only if return value is true
+    inline bool IsNatInfoPkt(bool &first) {
+        if (!m_ipv4 || (m_protocol != IPPROTO_TCP)) {
+            return false;
+        }
+        if (! m_l4 || (m_l4 - rte_pktmbuf_mtod(m_m, uint8_t*) + TCP_HEADER_LEN) > m_m->data_len) {
+            return false;
+        }
+        // If we are here, relevant fields from tcp header are guaranteed to be in first mbuf
+        // We want to handle SYN and SYN+ACK packets
+        TCPHeader *tcp = (TCPHeader *)m_l4;
+        if (! tcp->getSynFlag())
+            return false;
+
+        if (! tcp->getAckFlag()) {
+            first = true;
+        } else {
+            first = false;
+        }
+        return true;
+    }
+
+ public:
+    IPHeader *      m_ipv4;
+    IPv6Header *    m_ipv6;
+    uint8_t         m_protocol;
+    uint16_t        m_vlan_offset;
+    uint8_t *       m_l4;
+ private:
+    rte_mbuf_t *    m_m ;
+};
+
 #endif
-- 
cgit 1.2.3-korg