Messages in this thread | | | From | Herbert Xu <> | Subject | Re: [RFC/PATCH] SO_NO_CHECK for IPv6 | Date | Sat, 24 Nov 2007 14:00:41 +0800 |
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David Schwartz <davids@webmaster.com> wrote: > >> Regardless of whatever verifications your application is doing >> on the data, it is not checksumming the ports and that's what >> the pseudo-header is helping with. > > So what? We are in the case where the data has already gotten to him. If it > got to him in error, he'll reject it anyway. The receive checksum check will > only reject packets that he would reject anyway. That makes it needless.
What if it goes to the wrong recipient who doesn't have the upper- level checksums?
This is the whole point, IPv6 unlike IPv4 does not have IP header checksums so the high-level needs to protect it by checksumming the pseudo-header.
Cheers, -- Visit Openswan at http://www.openswan.org/ Email: Herbert Xu ~{PmV>HI~} <herbert@gondor.apana.org.au> Home Page: http://gondor.apana.org.au/~herbert/ PGP Key: http://gondor.apana.org.au/~herbert/pubkey.txt - 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/
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