On Thu, Feb 10, 2011 at 9:41 AM, Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx> wrote: > > Randi wrote: > >> > Yes the checksum is for the header and data. >> > Keep in mind that the checksum value is optional in ipv4, but required in ipv6. >> >> Chris, optional means it can be enable or not, how to enable it and get >> the headehttps://mail.google.com/mail/?shva=1#inbox/12e0da8d716c914er to verify the checksum. > > Checksums are enabled by default. You can disable checksums when > sending using the SO_NO_CHECK option. On receipt, the kernel will > verify the checksum if it's present, and discard the packet if there > is an error. > > -- > Glynn Clements <glynn@xxxxxxxxxxxxxxxxxx> > -- > To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in > the body of a message to majordomo@xxxxxxxxxxxxxxx > More majordomo info at http://vger.kernel.org/majordomo-info.html > Also keep in mind that the check is for individual frames, even checking that there's no certainty that all frames will arrive. -- David A. -- To unsubscribe from this list: send the line "unsubscribe linux-c-programming" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
