From: Mi Jinlong <mijinlong@cn.fujitsu.com>
Date: Thu, 14 Jul 2011 06:50:17 +0000 (+0800)
Subject: nfsd41: error out when client sets maxreq_sz or maxresp_sz too small
X-Git-Tag: v3.1-rc1~239^2~8
X-Git-Url: http://git.openpandora.org/cgi-bin/gitweb.cgi?a=commitdiff_plain;h=1b74c25bc1a142ee8dd7ad080e2a974f28d1cb18;p=pandora-kernel.git

nfsd41: error out when client sets maxreq_sz or maxresp_sz too small

According to RFC5661, 18.36.3,

 "if the client selects a value for ca_maxresponsesize such that
  a replier on a channel could never send a response,the server
  SHOULD return NFS4ERR_TOOSMALL in the CREATE_SESSION reply."

So, error out when the client sets a maxreq_sz less than the minimum
possible SEQUENCE request size, or sets a maxresp_sz less than the
minimum possible SEQUENCE reply size.

Signed-off-by: Mi Jinlong <mijinlong@cn.fujitsu.com>
Signed-off-by: J. Bruce Fields <bfields@redhat.com>
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