Messages in this thread | | | Date | Wed, 21 Nov 2007 19:17:40 -0500 | From | Jeff Garzik <> | Subject | Re: [RFC/PATCH] SO_NO_CHECK for IPv6 |
| |
YOSHIFUJI Hideaki / 吉藤英明 wrote: > In article <20071121124532.GA17263@havoc.gtf.org> (at Wed, 21 Nov 2007 07:45:32 -0500), Jeff Garzik <jeff@garzik.org> says: > >> SO_NO_CHECK support for IPv6 appeared to be missing. This is presented, >> based on a reading of net/ipv4/udp.c. > > Disagree. UDP checksum is mandatory in IPv6.
Ah, you mean that I need to turn off UDP checksum on receive end as well in IPv6... true.
For those interested, I am dealing with a UDP app that already does very strong checksumming and encryption, so additional software checksumming at the lower layers is quite simply a waste of CPU cycles. Hardware checksumming is fine, as long as its "free."
Jeff
- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
| |