Messages in this thread | | | Date | Wed, 20 Jan 2010 22:41:59 +0100 (CET) | From | Jan Engelhardt <> | Subject | Re: [PATCH] xt_TCPMSS: SYN packets are allowed to contain data |
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On Wednesday 2010-01-20 22:39, Jan Engelhardt wrote:
>On Wednesday 2010-01-20 22:21, Simon Arlott wrote: > >>The TCPMSS target is dropping SYN packets where: >> 1) There is data, or >> 2) The data offset makes the TCP header larger than >> the packet. >> >>Both of these result in an error level printk. >> >>This change fixes the drop of SYN packets with data >>(because the MSS option can safely be modified) and >>passes packets with no MSS option instead of adding >>one (which is not valid). > >Can you explain why the automatic addition of a MSS option is removed?
That is, of course, for the git log. If I followed the thread right, it was that adding the option could exceed the MTU. Well, can't we check for the outgoing MTU?
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