Date: Sat, 09 Feb 2002 12:56:06 -0800 (PST) From: Jonathan Hanna <jhanna@shaw.ca> To: vs3volod@yahoo.com Cc: hackers@FreeBSD.ORG Subject: RE: ping: sendto: No buffer space available Message-ID: <200202092056.g19Ku8j00368@207-194-143-195.dsl.axion.net> In-Reply-To: <86aduisa17.fsf@f434.n5020.z2.fidonet.org>
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This looks like the bug in the "ep" driver. When the interrupt routine
gets both TX and RX interrupts it acknowledges both but only services
the read. Karl Dietz, <Karl.Dietz@TRIPLAN.com> is working on an overhaul
but my quick fix is to take out the "continue" after the "epread()" in
ep_intr(). The buffer talked about is actually the ep queue being full.
--- if_ep.c Fri Feb 1 19:51:43 2002
+++ if_ep.c.fix Sat Feb 9 12:49:31 2002
@@ -571,7 +571,6 @@
if (status & (S_RX_COMPLETE | S_RX_EARLY)) {
epread(sc);
- continue;
}
if (status & S_TX_AVAIL) {
/* we need ACK */
Karl Dietz <Karl.Dietz@TRIPLAN.com>
On 09-Feb-02 vs3volod@yahoo.com wrote:
>
> Some times connections to my host freeze.
> What buffer ping talks about?
>
> ~:# ping p109
> ping: sendto: No buffer space available
> ping: sendto: No buffer space available
> ping: sendto: No buffer space available
> ping: sendto: No buffer space available
> PING p109.f434.n5020.z2.fidonet.org (192.168.44.109): 56 data bytes
>
> --- p109.f434.n5020.z2.fidonet.org ping statistics ---
> 4 packets transmitted, 0 packets received, 100% packet loss
> ~:# pstat -T
> 236/1064 files
> 0M/255M swap space
> ~:# netstat -m
> 97/128/4096 mbufs in use (current/peak/max):
> 49 mbufs allocated to data
> 48 mbufs allocated to packet headers
> 17/28/1024 mbuf clusters in use (current/peak/max)
> 88 Kbytes allocated to network (2% of mb_map in use)
> 0 requests for memory denied
> 0 requests for memory delayed
> 0 calls to protocol drain routines
> ~:# ifconfig
> ep0: flags=8c43<UP,BROADCAST,RUNNING,OACTIVE,SIMPLEX,MULTICAST> mtu 1500
> inet 192.168.44.41 netmask 0xffffff00 broadcast 192.168.44.255
> inet6 fe80::2a0:24ff:fe46:b823%ep0 prefixlen 64 scopeid 0x1
> inet 192.168.44.42 netmask 0xffffffff broadcast 192.168.44.42
> ether 00:a0:24:46:b8:23
> media: Ethernet 10baseT/UTP
> faith0: flags=8000<MULTICAST> mtu 1500
> stf0: flags=0<> mtu 1280
> lo0: flags=8049<UP,LOOPBACK,RUNNING,MULTICAST> mtu 16384
> inet6 ::1 prefixlen 128
> inet6 fe80::1%lo0 prefixlen 64 scopeid 0x4
> inet 127.0.0.1 netmask 0xff000000
> ppp0: flags=8051<UP,POINTOPOINT,RUNNING,MULTICAST> mtu 1500
> inet 192.168.10.202 --> 192.168.3.3 netmask 0xffffff00
> ppp1: flags=8010<POINTOPOINT,MULTICAST> mtu 1500
> ~:# uname -a
> FreeBSD f434.n5020.z2.fidonet.org 4.4-STABLE FreeBSD 4.4-STABLE #1: Wed Dec 26 22:47:45 MSK 2001 root@f434.n5020.z2.fidon
et.org:/usr/src/sys/compile/PP i386
> ~:#
>
>
> Seva.
>
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Jonathan Hanna <jhanna@shaw.ca>
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