From 982f7b6fbf2a4c6390133d5ae50e97f4af6d7cb4 Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Fri, 25 Jul 1997 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1997-07-25

---
 ip/udp.c | 15 ++++++++++-----
 1 file changed, 10 insertions(+), 5 deletions(-)

diff --git a/ip/udp.c b/ip/udp.c
index 5f36900156f511c52d7a9a98915144fc1c0e8a78..e8011ef3d581abe7cfd9d83df985aa6d7fd79038 100644
--- a/ip/udp.c
+++ b/ip/udp.c
@@ -226,6 +226,8 @@ udpiput(Media *m, Block *bp)
 
 	raddr = nhgetl(uh->udpsrc);
 	laddr = nhgetl(uh->udpdst);
+	lport = nhgets(uh->udpdport);
+	rport = nhgets(uh->udpsport);
 
 	if(udpsum && nhgets(uh->udpcksum)) {
 		if(ptclcsum(bp, UDP_IPHDR, len+UDP_PHDRSIZE)) {
@@ -236,9 +238,6 @@ udpiput(Media *m, Block *bp)
 		}
 	}
 
-	lport = nhgets(uh->udpdport);
-	rport = nhgets(uh->udpsport);
-
 	/* Look for a conversation structure for this port */
 	c = nil;
 	for(p = udp.conv; *p; p++) {
@@ -250,6 +249,8 @@ udpiput(Media *m, Block *bp)
 	}
 
 	if(*p == nil) {
+		netlog(Logudp, "udp: no conv %I.%d -> %I.%d\n", uh->udpsrc, rport,
+			uh->udpdst, lport);
 		freeblist(bp);
 		return;
 	}
@@ -260,6 +261,8 @@ udpiput(Media *m, Block *bp)
 	len -= (UDP_HDRSIZE-UDP_PHDRSIZE);
 	bp = trimblock(bp, UDP_IPHDR+UDP_HDRSIZE, len);
 	if(bp == nil){
+		netlog(Logudp, "udp: len err %I.%d -> %I.%d\n", uh->udpsrc, rport,
+			uh->udpdst, lport);
 		udp.lenerr++;
 		return;
 	}
@@ -293,9 +296,11 @@ udpiput(Media *m, Block *bp)
 	if(bp->next)
 		bp = concatblock(bp);
 
-	if(qfull(c->rq))
+	if(qfull(c->rq)){
+		netlog(Logudp, "udp: qfull %I.%d -> %I.%d\n", uh->udpsrc, rport,
+			uh->udpdst, lport);
 		freeblist(bp);
-	else
+	}else
 		qpass(c->rq, bp);
 }