From: James Morris [mailto:email@example.com]
Sent: 2003$BG/(J7$B7n(J25$BF|(J 23:12
To: Zhao, Forrest
Cc: firstname.lastname@example.org; email@example.com
Subject: Re: [IPSec]A problem with xfrm_check_output()
On Fri, 25 Jul 2003, Zhao, Forrest wrote:
> The function xfrm_check_output() has the same problem, because it's
> before doing transformation.
The check is made only on the innermost xfrm, which carries all of the
overhead of the bundle in dst->header_len and dst->trailer_len, which is
checked against the fundamental mtu.
Maybe it's not the case, for example, when doing the ESP transformation the real "header_len" after transformation may be larger than "dst->header_len" because we can't know the length of alignment padding bits before doing the transformation. What's your opinion?
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