Date: Thu, 12 May 2005 11:43:20 -0500 From: jmc <jcagle@gmail.com> To: freebsd-stable@freebsd.org Subject: 5.4 weird transmit problem Message-ID: <6863f0c905051209432a3afcb9@mail.gmail.com>
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I've got 5.4 amd64 installed on an Opteron server and I cannot get it to reliably transmit packets larger than 80 bytes using the bge driver (on a BCM5703 NIC). It receives large packets without any problem, but it just won't transmit them. (I can tcpdump all day long without a problem - big and small packets.) For example, I can "ping -s 38 <ip>" and it works fine. But if I try "ping -s 39 <ip>" (or any size larger than 38) it does not work. A 38 byte ping creates an 80 byte Ethernet packet. Here's the bge0 info from dmesg: bge0: <Broadcom BCM5703X Gigabit Ethernet, ASIC rev. 0x1100> mem 0xf7ef0000-0xf7 efffff irq 24 at device 1.0 on pci3 bge0: Reserved 0x10000 bytes for rid 0x10 type 3 at 0xf7ef0000 miibus0: <MII bus> on bge0 brgphy0: <BCM5703 10/100/1000baseTX PHY> on miibus0 brgphy0: 10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseTX, 1000baseTX -FDX, auto bge0: bpf attached bge0: Ethernet address: 00:11:85:fd:8f:f9 bge0: [MPSAFE] Here's ifconfig for bge0: bge0: flags=8843<UP,BROADCAST,RUNNING,SIMPLEX,MULTICAST> mtu 1500 options=1a<TXCSUM,VLAN_MTU,VLAN_HWTAGGING> inet 16.100.240.165 <http://16.100.240.165>; netmask 0xfffffc00 broadcast 16.100.243.255 <http://16.100.243.255>; inet6 fe80::211:85ff:fefd:8ff9%bge0 prefixlen 64 scopeid 0x1 ether 00:11:85:fd:8f:f9 media: Ethernet autoselect (1000baseTX <full-duplex>) status: active Much to my dismay, I've found that if I use the -l option (preload) for ping, I get some large packets through: ninox# ping -l10 -c10 -s200 16.100.240.1 <http://16.100.240.1>; PING 16.100.240.1 <http://16.100.240.1>; (16.100.240.1 <http://16.100.240.1>): 200 data bytes 208 bytes from 16.100.240.1 <http://16.100.240.1>: icmp_seq=2 ttl=128 time= 1.025 ms 208 bytes from 16.100.240.1 <http://16.100.240.1>: icmp_seq=3 ttl=128 time= 1.306 ms 208 bytes from 16.100.240.1 <http://16.100.240.1>: icmp_seq=4 ttl=128 time= 1.593 ms 208 bytes from 16.100.240.1 <http://16.100.240.1>: icmp_seq=5 ttl=128 time= 2.026 ms 208 bytes from 16.100.240.1 <http://16.100.240.1>: icmp_seq=6 ttl=128 time= 2.314 ms 208 bytes from 16.100.240.1 <http://16.100.240.1>: icmp_seq=7 ttl=128 time= 2.746 ms 208 bytes from 16.100.240.1 <http://16.100.240.1>: icmp_seq=8 ttl=128 time= 3.034 ms 208 bytes from 16.100.240.1 <http://16.100.240.1>: icmp_seq=9 ttl=128 time= 3.468 ms --- 16.100.240.1 <http://16.100.240.1>; ping statistics --- 10 packets transmitted, 8 packets received, 20% packet loss round-trip min/avg/max/stddev = 1.025/2.189/3.468/0.806 ms Has anyone else ever seen a problem like this? Any suggestions on where to poke around for a solution? Thanks, John
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