[lkml]   [2000]   [Sep]   [2]   [last100]   RSS Feed
Views: [wrap][no wrap]   [headers]  [forward] 
Messages in this thread
SubjectRe: zero-copy TCP
> to MANOS, and what a mess indeed. In NetWare, the only time data ever
> gets copied from incoming packets is:
> 1. A copy to userspace at a stream head.
> 2. An incoming write that gets copied into the file cache.

Sounds like Linux - one DMA and one copy to user space.

> Reads from cache are never copied. In fact, the network server locks a
> file cache page and sends it unaltered to the network drivers and DMA's
> directly from it. Since NetWare has WTD's these I/O requests get

Doesn't work with IP - you have to be able to checksum the data. For the
recent cards that can handle this have a look at TUX. The work is there ready
for 2.5


To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to
Please read the FAQ at

 \ /
  Last update: 2005-03-22 12:38    [W:0.279 / U:1.280 seconds]
©2003-2020 Jasper Spaans|hosted at Digital Ocean and TransIP|Read the blog|Advertise on this site