cvs commit: src/sys/dev/nfe if_nfe.c if_nfereg.h

[Pyun YongHyeon]

On Tue, Jun 12, 2007 at 06:05:21AM -0400, Andrew Gallatin wrote:
 > Pyun YongHyeon [yongari at FreeBSD.org] wrote:
 > > yongari     2007-06-12 02:35:01 UTC
 > > 
 > >   FreeBSD src repository
 > > 
 > >   Modified files:
 > >     sys/dev/nfe          if_nfe.c if_nfereg.h 
 > >   Log:
 > >   Increase a maximum segment size of DMA to 4096. Previously it used
 > >   MCLBYTES for the segment size but it used too many Tx descriptors in
 > >   TSO case.
 > >   While I'm here adjust maximum size of the sum of all segment lengths
 > >   in a given DMA mapping to 65535, the maximum size, in bytes, of a IP
 > 
 > Can't it actually be 65535 + link layer headers?  Eg, up to
 > 65535 + 14 or 65535 + 18?
 > 

Oops, you're right. It should be 65535 + sizeof(struct ether_vlan_header).
Thanks for pointing out! :)

 > Drew

-- 
Regards,
Pyun YongHyeon