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Re: EB40LS ping_test problem
- From: RandyLin at mxic dot com dot tw
- To: ecos-discuss at sources dot redhat dot com
- Date: Fri, 19 Sep 2003 09:54:19 +0800
- Subject: Re: [ECOS] EB40LS ping_test problem
Andrew Lunn
<andrew@lunn.ch> 收件人： RandyLin@mxic.com.tw
寄件人： 副本抄送： ecos-discuss@sources.redhat.com
ecos-discuss-owner@sources 主旨： Re: [ECOS] EB40LS ping_test problem
.redhat.com
2003/09/17 05:43 PM
> I use ethernal to capture the packets.
> EB40LS first send ARP packet, and Linux reply.
> But EB40LS seems don't receive the reply packets, it resend the ARP
> packets.
> Where may be the problem??
Probably the receive part of the driver. Check to see if you are
getting interrupts when it receives a packet. Then check what actually
happens during the receive.
Andrew
I enable the The CYGDBG_IO_ETH_DRIVERS_DEBUG,and set
CYGDBG_IO_ETH_DRIVERS_DEBUG_VERBOSITY=2,
I got the following message:
Q1: In the first two packets, why it sends arp to 192.9.207.130?
The target is 192.9.207.130!
Q2: Sending bytes is 42, who will do the padding to 60?
Because Linux got 60 bytes of arp.
Q3: EB40LS got arp reply, but it don't send the icmp(ping),
it's just sending the arp out.
=======================================================
hw_addr: 08:88:12:34:56:78
client IP: 192.9.207.130
my IP: 192.9.207.130
server IP: 192.9.207.120
gateway IP: 192.9.207.254
options:
subnet mask: 255.255.255.0
IP broadcast: 192.9.207.255
gateway: 192.9.207.254
Sending 42 bytes
xmit 42 bytes at 20f8c56 sg[1]
020F8C56: FF FF FF FF FF FF 08 88 12 34 56 78 08 06 00 01
|.........4Vx....|
020F8C66: 08 00 06 04 00 01 08 88 12 34 56 78 C0 09 CF 82
|.........4Vx....|
020F8C76: 00 00 00 00 00 00 C0 09 CF 82 |..........
|
Sending 42 bytes
xmit 42 bytes at 20f8bd6 sg[1]
020F8BD6: FF FF FF FF FF FF 08 88 12 34 56 78 08 06 00 01
|.........4Vx....|
020F8BE6: 08 00 06 04 00 01 08 88 12 34 56 78 C0 09 CF 82
|.........4Vx....|
020F8BF6: 00 00 00 00 00 00 C0 09 CF 82 |..........
|
PING server 192.9.207.120
Sending 42 bytes
xmit 42 bytes at 20f8a56 sg[1]
020F8A56: FF FF FF FF FF FF 08 88 12 34 56 78 08 06 00 01
|.........4Vx....|
020F8A66: 08 00 06 04 00 01 08 88 12 34 56 78 C0 09 CF 82
|.........4Vx....|
020F8A76: 00 00 00 00 00 00 C0 09 CF 78 |.........x
|
RxEvent - stat: 504, len: 60
rx 14 bytes at 2128f74 sg[0]
02128F74: 08 88 12 34 56 78 00 50 BF 43 DD AC 08 06 |...4Vx.P.C....
|
rx 46 bytes at 20f89ac sg[1]
020F89AC: 00 01 08 00 06 04 00 02 00 50 BF 43 DD AC C0 09
|.........P.C....|
020F89BC: CF 78 08 88 12 34 56 78 C0 09 CF 82 11 0A 11 75
|.x...4Vx.......u|
020F89CC: C0 09 CF 78 00 8A 00 C3 00 00 20 46 43 45 |...x...... FCE
|
Tx event: 8
recvfrom: Operation timed out
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