From 109d3225907352e17c670a7512611d11dc5b2e4b Mon Sep 17 00:00:00 2001
From: David du Colombier <0intro@gmail.com>
Date: Sat, 9 May 1998 00:00:00 +0000
Subject: [PATCH] Plan 9 from Bell Labs 1998-05-09

---
 ip/devip.c       |  6 ++++++
 ip/icmp.c        | 17 +++++++++++++++--
 ip/ip.h          |  1 +
 ip/udp.c         |  9 +++------
 pc/vgamga2164w.c |  4 ++--
 5 files changed, 27 insertions(+), 10 deletions(-)

diff --git a/ip/devip.c b/ip/devip.c
index 28e970489a7741ac644d8bb743e5d0622808ef95..0a748ead8a1c8dd63416f546c6cf3c195a9c1ae7 100644
--- a/ip/devip.c
+++ b/ip/devip.c
@@ -1099,6 +1099,12 @@ Fsrcvpcol(Fs* f, uchar proto)
 		return f->t2p[proto];
 }
 
+Proto*
+Fsrcvpcolx(Fs *f, uchar proto)
+{
+	return f->t2p[proto];
+}
+
 Conv*
 Fsnewcall(Conv *c, uchar *raddr, ushort rport, uchar *laddr, ushort lport)
 {
diff --git a/ip/icmp.c b/ip/icmp.c
index 4fa21dd6edf420537349c2d344b21f5d8ba9e4b7..bcf6e6cea1b77cd57432c7f45286f8cd0d443b40 100644
--- a/ip/icmp.c
+++ b/ip/icmp.c
@@ -141,8 +141,21 @@ icmpnoconv(Fs *f, Block *bp)
 {
 	Block	*nbp;
 	Icmp	*p, *np;
+	int	i;
+	uchar	addr[IPaddrlen];
 
 	p = (Icmp *)bp->rp;
+
+	/* only do this for unicast sources and destinations */
+	v4tov6(addr, p->dst);
+	i = ipforme(f, addr);
+	if((i&Runi) == 0)
+		return;
+	v4tov6(addr, p->src);
+	i = ipforme(f, addr);
+	if((i&Runi) == 0)
+		return;
+
 	netlog(f, Logicmp, "sending icmpnoconv -> %V\n", p->src);
 	nbp = allocb(ICMP_IPSIZE + ICMP_HDRSIZE + ICMP_IPSIZE + 8);
 	nbp->wp += ICMP_IPSIZE + ICMP_HDRSIZE + ICMP_IPSIZE + 8;
@@ -263,7 +276,7 @@ icmpiput(Proto *icmp, uchar*, Block *bp)
 			goto raise;
 		}
 		p = (Icmp *)bp->rp;
-		pr = Fsrcvpcol(icmp->f, p->proto);
+		pr = Fsrcvpcolx(icmp->f, p->proto);
 		if(pr != nil && pr->advise != nil) {
 			(*pr->advise)(pr, bp, msg);
 			return;
@@ -282,7 +295,7 @@ icmpiput(Proto *icmp, uchar*, Block *bp)
 				goto raise;
 			}
 			p = (Icmp *)bp->rp;
-			pr = Fsrcvpcol(icmp->f, p->proto);
+			pr = Fsrcvpcolx(icmp->f, p->proto);
 			if(pr != nil && pr->advise != nil) {
 				(*pr->advise)(pr, bp, m2);
 				return;
diff --git a/ip/ip.h b/ip/ip.h
index c4ce94c3417b9bf9c2b7460069589613fd3b354f..20a0642832ad0823d23d42aabdce8171b66c1f74 100644
--- a/ip/ip.h
+++ b/ip/ip.h
@@ -264,6 +264,7 @@ int	Fsproto(Fs*, Proto*);
 int	Fsbuiltinproto(Fs*, uchar);
 Conv*	Fsprotoclone(Proto*, char*);
 Proto*	Fsrcvpcol(Fs*, uchar);
+Proto*	Fsrcvpcolx(Fs*, uchar);
 char*	Fsstdconnect(Conv*, char**, int);
 char*	Fsstdannounce(Conv*, char**, int);
 char*	Fsstdbind(Conv*, char**, int);
diff --git a/ip/udp.c b/ip/udp.c
index 7ef6a3757c8ad7f316b8e54dc231e24a13694c39..436349381762f21d67d545a4bb34196970501837 100644
--- a/ip/udp.c
+++ b/ip/udp.c
@@ -284,12 +284,9 @@ udpiput(Proto *udp, uchar *ia, Block *bp)
 		upriv->ustats.udpNoPorts++;
 		netlog(f, Logudp, "udp: no conv %I!%d -> %I!%d\n", raddr, rport,
 			laddr, lport);
-		/* don't complain about broadcasts... */
-		if(ipforme(f, raddr) == 0){
-			uh->Unused = ottl;
-			hnputs(uh->udpplen, olen);
-			icmpnoconv(f, bp);
-		}
+		uh->Unused = ottl;
+		hnputs(uh->udpplen, olen);
+		icmpnoconv(f, bp);
 		freeblist(bp);
 		return;
 	}
diff --git a/pc/vgamga2164w.c b/pc/vgamga2164w.c
index da9bdeaff3603e59e3099ab449d2e11161400030..0239dde7b764ccb1f45cb7d520bf7d553346a668 100644
--- a/pc/vgamga2164w.c
+++ b/pc/vgamga2164w.c
@@ -54,7 +54,7 @@ mga2164wlinear(VGAscr* scr, int* size, int* align)
 
 	if(p = mgapcimatch()){
 		aperture = p->mem[p->did==MGA2064? 1 : 0].bar & ~0x0F;
-		*size = 16*1024*1024;
+		*size = (p->did==MGA2064? 8 :16)*1024*1024;
 	}
 	else
 		aperture = 0;
@@ -117,7 +117,7 @@ mga2164wenable(VGAscr* scr)
 	scr->io = (ulong)KADDR(scr->io);
 
 	/* need to map frame buffer here too, so vga can find memory size */
-	size = 16*1024*1024;
+	size = (p->did==MGA2064? 8 :16)*1024*1024;
 	align = 0;
 	aperture = mga2164wlinear(scr, &size, &align);
 	if(aperture) {