Re: [PATCH] xt_TCPMSS: SYN packets are allowed to contain data

From: Jan Engelhardt
Date: Wed Jan 20 2010 - 16:39:17 EST

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?
To unsubscribe from this list: send the line "unsubscribe linux-kernel" in
the body of a message to majordomo@xxxxxxxxxxxxxxx
More majordomo info at
Please read the FAQ at