slirp: Drop statistic code

As agreed on the mailing list, there is no interest in keeping the
usually disabled slirp statistics in the tree. So this patch removes
them.

Signed-off-by: Jan Kiszka <jan.kiszka@siemens.com>
Signed-off-by: Anthony Liguori <aliguori@us.ibm.com>

1 files changed, 3 insertions, 46 deletions

diff --git a/slirp/tcp_input.c b/slirp/tcp_input.c
index 980ae06d34..b7a67e561f 100644
--- a/slirp/tcp_input.c
+++ b/slirp/tcp_input.c
@@ -75,8 +75,6 @@ tcp_seq tcp_iss;                /* tcp initial send seq # */
                        tp->t_flags |= TF_DELACK; \
                (tp)->rcv_nxt += (ti)->ti_len; \
                flags = (ti)->ti_flags & TH_FIN; \
-               STAT(tcpstat.tcps_rcvpack++);         \
-               STAT(tcpstat.tcps_rcvbyte += (ti)->ti_len);   \
                if (so->so_emu) { \
 		       if (tcp_emu((so),(m))) sbappend((so), (m)); \
 	       } else \
@@ -94,8 +92,6 @@ tcp_seq tcp_iss;                /* tcp initial send seq # */
 		tp->t_flags |= TF_DELACK; \
 		(tp)->rcv_nxt += (ti)->ti_len; \
 		flags = (ti)->ti_flags & TH_FIN; \
-		STAT(tcpstat.tcps_rcvpack++);        \
-		STAT(tcpstat.tcps_rcvbyte += (ti)->ti_len);  \
 		if (so->so_emu) { \
 			if (tcp_emu((so),(m))) sbappend(so, (m)); \
 		} else \
@@ -145,8 +141,6 @@ tcp_reass(register struct tcpcb *tp, register struct tcpiphdr *ti,
 		i = q->ti_seq + q->ti_len - ti->ti_seq;
 		if (i > 0) {
 			if (i >= ti->ti_len) {
-				STAT(tcpstat.tcps_rcvduppack++);
-				STAT(tcpstat.tcps_rcvdupbyte += ti->ti_len);
 				m_freem(m);
 				/*
 				 * Try to present any queued data
@@ -162,8 +156,6 @@ tcp_reass(register struct tcpcb *tp, register struct tcpiphdr *ti,
 		}
 		q = tcpiphdr_next(q);
 	}
-	STAT(tcpstat.tcps_rcvoopack++);
-	STAT(tcpstat.tcps_rcvoobyte += ti->ti_len);
 	ti->ti_mbuf = m;
 
 	/*
@@ -263,8 +255,6 @@ tcp_input(struct mbuf *m, int iphlen, struct socket *inso)
 		goto cont_conn;
 	}
 
-
-	STAT(tcpstat.tcps_rcvtotal++);
 	/*
 	 * Get IP and TCP header together in first mbuf.
 	 * Note: IP leaves IP header in first mbuf.
@@ -295,7 +285,6 @@ tcp_input(struct mbuf *m, int iphlen, struct socket *inso)
 	ti->ti_len = htons((u_int16_t)tlen);
 	len = sizeof(struct ip ) + tlen;
 	if(cksum(m, len)) {
-	  STAT(tcpstat.tcps_rcvbadsum++);
 	  goto drop;
 	}
 
@@ -305,7 +294,6 @@ tcp_input(struct mbuf *m, int iphlen, struct socket *inso)
 	 */
 	off = ti->ti_off << 2;
 	if (off < sizeof (struct tcphdr) || off > tlen) {
-	  STAT(tcpstat.tcps_rcvbadoff++);
 	  goto drop;
 	}
 	tlen -= off;
@@ -353,7 +341,6 @@ findso:
 			       ti->ti_dst, ti->ti_dport);
 		if (so)
 			tcp_last_so = so;
-		STAT(tcpstat.tcps_socachemiss++);
 	}
 
 	/*
@@ -460,13 +447,10 @@ findso:
 				/*
 				 * this is a pure ack for outstanding data.
 				 */
-				STAT(tcpstat.tcps_predack++);
 				if (tp->t_rtt &&
 				    SEQ_GT(ti->ti_ack, tp->t_rtseq))
 					tcp_xmit_timer(tp, tp->t_rtt);
 				acked = ti->ti_ack - tp->snd_una;
-				STAT(tcpstat.tcps_rcvackpack++);
-				STAT(tcpstat.tcps_rcvackbyte += acked);
 				sbdrop(&so->so_snd, acked);
 				tp->snd_una = ti->ti_ack;
 				m_freem(m);
@@ -503,10 +487,7 @@ findso:
 			 * with nothing on the reassembly queue and
 			 * we have enough buffer space to take it.
 			 */
-			STAT(tcpstat.tcps_preddat++);
 			tp->rcv_nxt += ti->ti_len;
-			STAT(tcpstat.tcps_rcvpack++);
-			STAT(tcpstat.tcps_rcvbyte += ti->ti_len);
 			/*
 			 * Add data to socket buffer.
 			 */
@@ -658,7 +639,6 @@ findso:
 	  tp->t_flags |= TF_ACKNOW;
 	  tp->t_state = TCPS_SYN_RECEIVED;
 	  tp->t_timer[TCPT_KEEP] = TCPTV_KEEP_INIT;
-	  STAT(tcpstat.tcps_accepts++);
 	  goto trimthenstep6;
 	} /* case TCPS_LISTEN */
 
@@ -699,7 +679,6 @@ findso:
 		tcp_rcvseqinit(tp);
 		tp->t_flags |= TF_ACKNOW;
 		if (tiflags & TH_ACK && SEQ_GT(tp->snd_una, tp->iss)) {
-			STAT(tcpstat.tcps_connects++);
 			soisfconnected(so);
 			tp->t_state = TCPS_ESTABLISHED;
 
@@ -726,8 +705,6 @@ trimthenstep6:
 			m_adj(m, -todrop);
 			ti->ti_len = tp->rcv_wnd;
 			tiflags &= ~TH_FIN;
-			STAT(tcpstat.tcps_rcvpackafterwin++);
-			STAT(tcpstat.tcps_rcvbyteafterwin += todrop);
 		}
 		tp->snd_wl1 = ti->ti_seq - 1;
 		tp->rcv_up = ti->ti_seq;
@@ -768,11 +745,6 @@ trimthenstep6:
 			 */
 			tp->t_flags |= TF_ACKNOW;
 			todrop = ti->ti_len;
-			STAT(tcpstat.tcps_rcvduppack++);
-			STAT(tcpstat.tcps_rcvdupbyte += todrop);
-		} else {
-			STAT(tcpstat.tcps_rcvpartduppack++);
-			STAT(tcpstat.tcps_rcvpartdupbyte += todrop);
 		}
 		m_adj(m, todrop);
 		ti->ti_seq += todrop;
@@ -791,7 +763,6 @@ trimthenstep6:
 	if ((so->so_state & SS_NOFDREF) &&
 	    tp->t_state > TCPS_CLOSE_WAIT && ti->ti_len) {
 		tp = tcp_close(tp);
-		STAT(tcpstat.tcps_rcvafterclose++);
 		goto dropwithreset;
 	}
 
@@ -801,9 +772,7 @@ trimthenstep6:
 	 */
 	todrop = (ti->ti_seq+ti->ti_len) - (tp->rcv_nxt+tp->rcv_wnd);
 	if (todrop > 0) {
-		STAT(tcpstat.tcps_rcvpackafterwin++);
 		if (todrop >= ti->ti_len) {
-			STAT(tcpstat.tcps_rcvbyteafterwin += ti->ti_len);
 			/*
 			 * If a new connection request is received
 			 * while in TIME_WAIT, drop the old connection
@@ -826,11 +795,10 @@ trimthenstep6:
 			 */
 			if (tp->rcv_wnd == 0 && ti->ti_seq == tp->rcv_nxt) {
 				tp->t_flags |= TF_ACKNOW;
-				STAT(tcpstat.tcps_rcvwinprobe++);
-			} else
+			} else {
 				goto dropafterack;
-		} else
-			STAT(tcpstat.tcps_rcvbyteafterwin += todrop);
+			}
+		}
 		m_adj(m, -todrop);
 		ti->ti_len -= todrop;
 		tiflags &= ~(TH_PUSH|TH_FIN);
@@ -854,7 +822,6 @@ trimthenstep6:
 	case TCPS_FIN_WAIT_2:
 	case TCPS_CLOSE_WAIT:
 		tp->t_state = TCPS_CLOSED;
-		STAT(tcpstat.tcps_drops++);
 		tp = tcp_close(tp);
 		goto drop;
 
@@ -893,7 +860,6 @@ trimthenstep6:
 		if (SEQ_GT(tp->snd_una, ti->ti_ack) ||
 		    SEQ_GT(ti->ti_ack, tp->snd_max))
 			goto dropwithreset;
-		STAT(tcpstat.tcps_connects++);
 		tp->t_state = TCPS_ESTABLISHED;
 		/*
 		 * The sent SYN is ack'ed with our sequence number +1
@@ -944,7 +910,6 @@ trimthenstep6:
 
 		if (SEQ_LEQ(ti->ti_ack, tp->snd_una)) {
 			if (ti->ti_len == 0 && tiwin == tp->snd_wnd) {
-			  STAT(tcpstat.tcps_rcvdupack++);
 			  DEBUG_MISC((dfd," dup ack  m = %lx  so = %lx \n",
 				      (long )m, (long )so));
 				/*
@@ -1012,12 +977,9 @@ trimthenstep6:
 			tp->snd_cwnd = tp->snd_ssthresh;
 		tp->t_dupacks = 0;
 		if (SEQ_GT(ti->ti_ack, tp->snd_max)) {
-			STAT(tcpstat.tcps_rcvacktoomuch++);
 			goto dropafterack;
 		}
 		acked = ti->ti_ack - tp->snd_una;
-		STAT(tcpstat.tcps_rcvackpack++);
-		STAT(tcpstat.tcps_rcvackbyte += acked);
 
 		/*
 		 * If transmit timer is running and timed sequence
@@ -1138,10 +1100,6 @@ step6:
 	    (SEQ_LT(tp->snd_wl1, ti->ti_seq) ||
 	    (tp->snd_wl1 == ti->ti_seq && (SEQ_LT(tp->snd_wl2, ti->ti_ack) ||
 	    (tp->snd_wl2 == ti->ti_ack && tiwin > tp->snd_wnd))))) {
-		/* keep track of pure window updates */
-		if (ti->ti_len == 0 &&
-		    tp->snd_wl2 == ti->ti_ack && tiwin > tp->snd_wnd)
-			STAT(tcpstat.tcps_rcvwinupd++);
 		tp->snd_wnd = tiwin;
 		tp->snd_wl1 = ti->ti_seq;
 		tp->snd_wl2 = ti->ti_ack;
@@ -1425,7 +1383,6 @@ tcp_xmit_timer(register struct tcpcb *tp, int rtt)
 	DEBUG_ARG("tp = %lx", (long)tp);
 	DEBUG_ARG("rtt = %d", rtt);
 
-	STAT(tcpstat.tcps_rttupdated++);
 	if (tp->t_srtt != 0) {
 		/*
 		 * srtt is stored as fixed point with 3 bits after the