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Date: Sun, 18 Jan 2009 11:41:37 +0300
From: Dmitrij Tejblum <tejblum@yandex-team.ru>
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To: Kostik Belousov <kostikbel@gmail.com>
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Cc: freebsd-net@freebsd.org, yongari@freebsd.org
Subject: Re: age(4) corrupts packets
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Kostik Belousov wrote:
> I have to use a machine with ASUS motherboard, that has age(4) ethernet
> adapter. It seems that active use of the net causes corrupted frames,
> like the following ssh disconnect (after doing find / in the shell):
> Disconnecting: Corrupted MAC on input.

It can't be just a packet corruption, since TCP has checksums, and 
corrupted packets should have been dropped and retransmitted. Try to 
turn off checksum offloading.

> 
> Machine runs reasonably latest stable/7.
> 
> Any advice ? Anything I should try to tweak ? Do you need additional
> information ?
> 
> I can test patches on this box.
> 
> age0: <Attansic Technology Corp, L1 Gigabit Ethernet> mem
> 0xfeac0000-0xfeafffff irq 17 at device 0.0 on pci2
> age0: Reserved 0x40000 bytes for rid 0x10 type 3 at 0xfeac0000
> age0: PCI device revision : 0x00b0
> age0: Chip id/revision : 0x9006
> age0: 1280 Tx FIFO, 2364 Rx FIFO
> age0: MSIX count : 0
> age0: MSI count : 1
> age0: attempting to allocate 1 MSI vectors (1 supported)
> msi: routing MSI IRQ 256 to vector 52
> age0: using IRQ 256 for MSI
> age0: Using 1 MSI messages.
> age0: Read request size : 512 bytes.
> age0: TLP payload size : 128 bytes.
> age0: PCI VPD capability not found!
> miibus0: <MII bus> on age0
> atphy0: <Atheros F1 10/100/1000 PHY> PHY 0 on miibus0
> atphy0: OUI 0x001374, model 0x0001, rev. 5
> atphy0:  10baseT, 10baseT-FDX, 100baseTX, 100baseTX-FDX, 1000baseT-FDX, auto
> age0: bpf attached
> age0: Ethernet address: 00:1f:c6:b9:cc:a7
> msi: Assigning MSI IRQ 256 to local APIC 0
>