[bfe] [panic] Serious error: bfe failed to map RX buffer

[Oleg]

Hi, sorry for long delay, was too busy.
So, I recheck return code of bus_dmamap_load(9) and its exactly ENOMEM.
Here are fresh patch with your suggestions (diff with HEAD)

Best Regards,
  Oleg Dolgov.

2008/4/17, Pyun YongHyeon <pyunyh at gmail.com>:
> On Thu, Apr 17, 2008 at 12:43:53AM +0300, quad wrote:
>   > Hi,
>   >
>   >    FreeBSD amd64 7.0-RELEASE, ULE, SMP.
>   >
>   >    On heavy loads bfe network driver after few messages
>   >
>   >    Serious error: bfe failed to map RX buffer
>   >    Serious error: bfe failed to map RX buffer
>   >    Serious error: bfe failed to map RX buffer
>   >    ...
>   >
>   >    make kernel panic.
>   >
>   >    Here patch.
>   >
>
>
> It would be even better if you can show me the return code of
>  bus_dmamap_load(9). If the error code is not ENOMEM it requires
>  more bus_dma(9) clean up(bfe(4) needs lots of bus_dma(9) fixing
>  and I had no time so far.)
>  Since the caller of bfe_list_newbuf() expects 0 or ENOBUFS it would
>  be even better to return ENOBUFS for failure case instead of
>  returning error code of bus_dmamap_load(9).
>
>  --
>  Regards,
>
> Pyun YongHyeon
>
-------------- next part --------------
A non-text attachment was scrubbed...
Name: if_bfe.diff
Type: application/octet-stream
Size: 948 bytes
Desc: not available
Url : http://lists.freebsd.org/pipermail/freebsd-net/attachments/20080429/3617574d/if_bfe.obj