DLPX-37540 TCP per-connection kernel statistics DLPX-37544 connstat command to display per-connection TCP statistics

*** 606,616 ****
          uint32_t        new_swnd = 0;
          conn_t          *nconnp;
          conn_t          *connp = tcp->tcp_connp;
          tcp_stack_t     *tcps = tcp->tcp_tcps;
  
!         BUMP_LOCAL(tcp->tcp_ibsegs);
          DTRACE_PROBE2(tcp__trace__recv, mblk_t *, mp, tcp_t *, tcp);
  
          flags = (unsigned int)tcpha->tha_flags & 0xFF;
          new_swnd = ntohs(tcpha->tha_win) <<
              ((tcpha->tha_flags & TH_SYN) ? 0 : tcp->tcp_snd_ws);
--- 606,616 ----
          uint32_t        new_swnd = 0;
          conn_t          *nconnp;
          conn_t          *connp = tcp->tcp_connp;
          tcp_stack_t     *tcps = tcp->tcp_tcps;
  
!         TCPS_BUMP_MIB(tcps, tcpHCInSegs);
          DTRACE_PROBE2(tcp__trace__recv, mblk_t *, mp, tcp_t *, tcp);
  
          flags = (unsigned int)tcpha->tha_flags & 0xFF;
          new_swnd = ntohs(tcpha->tha_win) <<
              ((tcpha->tha_flags & TH_SYN) ? 0 : tcp->tcp_snd_ws);
*** 792,801 ****
--- 792,803 ----
                  seg_len = 0;
          } else if (seg_len > 0) {
                  TCPS_BUMP_MIB(tcps, tcpInClosed);
                  TCPS_BUMP_MIB(tcps, tcpInDataInorderSegs);
                  TCPS_UPDATE_MIB(tcps, tcpInDataInorderBytes, seg_len);
+                 tcp->tcp_cs.tcp_in_data_inorder_segs++;
+                 tcp->tcp_cs.tcp_in_data_inorder_bytes += seg_len;
          }
          if (flags & TH_RST) {
                  (void) tcp_clean_death(tcp, 0);
                  goto done;
          }