Re: Data Segment Padding
<[email protected]> Fri, 9 Oct 2009 02:46:58 -0400
| Newsgroups | gmane.ietf.ips |
|---|---|
| Message-ID | <9FA859626025B64FBC2AF149D97C944A03FE28E7@CORPUSMX80A.corp.emc.com> |
This is a multi-part message in MIME format. --===============0399355088== Content-class: urn:content-classes:message Content-Type: multipart/alternative; boundary="----_=_NextPart_001_01CA48AC.4DA416C6" This is a multi-part message in MIME format. ------_=_NextPart_001_01CA48AC.4DA416C6 Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: quoted-printable No, padding is not supported (e.g., breaks data digests). =20 RFC 3720 has this to say in Section 10.7.7 which strongly recommends 4-byte alignment of data segment boundaries: The Data Segments of Data-In and Data-Out PDUs SHOULD be filled to the integer number of 4 byte words (real payload) unless the F bit is set to 1. Thanks, --David ---------------------------------------------------- David L. Black, Distinguished Engineer EMC Corporation, 176 South St., Hopkinton, MA 01748 +1 (508) 293-7953 FAX: +1 (508) 293-7786 [email protected] Mobile: +1 (978) 394-7754 ---------------------------------------------------- ________________________________ From: [email protected] [mailto:[email protected]] On Behalf Of yushang Sent: Thursday, October 08, 2009 11:34 PM To: [email protected] Subject: [Ips] Data Segment Padding =09 =09 Hi , is it possible to send the middle part of a sequence of DATA-OUT with data segment padding to 4 bytes boundary ? Many thanks. =09 ------_=_NextPart_001_01CA48AC.4DA416C6 Content-Type: text/html; charset="us-ascii" Content-Transfer-Encoding: quoted-printable <!DOCTYPE HTML PUBLIC "-//W3C//DTD HTML 4.0 Transitional//EN"> <HTML><HEAD> <META http-equiv=3DContent-Type content=3D"text/html; = charset=3Dus-ascii"> <META content=3D"MSHTML 6.00.2900.3603" name=3DGENERATOR></HEAD> <BODY> <DIV><SPAN class=3D905414106-09102009><FONT face=3D"Courier New" = size=3D2>No, padding=20 is not supported (e.g., breaks data digests).</FONT></SPAN></DIV> <DIV><SPAN class=3D905414106-09102009><FONT face=3D"Courier New"=20 size=3D2></FONT></SPAN> </DIV> <DIV><SPAN class=3D905414106-09102009><FONT face=3D"Courier New" = size=3D2>RFC 3720 has=20 this to say in Section 10.7.7 which strongly</FONT></SPAN></DIV> <DIV><SPAN class=3D905414106-09102009><FONT face=3D"Courier New" = size=3D2>recommends=20 4-byte alignment of data segment boundaries:</FONT></SPAN></DIV> <DIV><SPAN class=3D905414106-09102009><SPAN lang=3DEN> <P>The Data Segments of Data-In and Data-Out PDUs SHOULD be filled = to<SPAN=20 class=3D905414106-09102009> </SPAN>the integer number of 4 byte words = (real=20 payload) unless the F bit is<SPAN class=3D905414106-09102009> </SPAN>set = to 1<SPAN=20 class=3D905414106-09102009>.</SPAN></SPAN></SPAN><FONT size=3D2><!-- = Converted from text/plain format --></P> <P><FONT=20 size=3D2>Thanks,<BR>--David<BR><BR>--------------------------------------= --------------<BR>David=20 L. Black, Distinguished Engineer<BR>EMC Corporation, 176 South St., = Hopkinton,=20 MA 01748<BR>+1 (508)=20 293-7953  = ; =20 FAX: +1 (508)=20 293-7786<BR>[email protected] = =20 Mobile: +1 (978)=20 394-7754<BR>----------------------------------------------------</FONT></= FONT></P></DIV> <BLOCKQUOTE=20 style=3D"PADDING-LEFT: 5px; MARGIN-LEFT: 5px; BORDER-LEFT: #000000 2px = solid; MARGIN-RIGHT: 0px"> <DIV class=3DOutlookMessageHeader lang=3Den-us dir=3Dltr align=3Dleft> <HR tabIndex=3D-1> <FONT face=3DTahoma size=3D2><B>From:</B> [email protected]=20 [mailto:[email protected]] <B>On Behalf Of = </B>yushang<BR><B>Sent:</B>=20 Thursday, October 08, 2009 11:34 PM<BR><B>To:</B>=20 [email protected]<BR><B>Subject:</B> [Ips] Data Segment=20 Padding<BR></FONT><BR></DIV> <DIV></DIV>Hi , is it possible to send the middle part of a sequence = of=20 DATA-OUT with data segment padding to 4 bytes boundary ? Many=20 thanks.<BR></BLOCKQUOTE></BODY></HTML> ------_=_NextPart_001_01CA48AC.4DA416C6-- --===============0399355088== Content-Type: text/plain; charset="us-ascii" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit Content-Disposition: inline _______________________________________________ Ips mailing list [email protected] https://www.ietf.org/mailman/listinfo/ips --===============0399355088==--