From: Mark Kavanagh <mark.b.kavanagh@intel.com>
To: dev@dpdk.org
Cc: jiayu.hu@intel.com, jianfeng.tan@intel.com,
konstantin.ananyev@intel.com, ferruh.yigit@intel.com,
thomas@monjalon.net, Mark Kavanagh <mark.b.kavanagh@intel.com>
Subject: [dpdk-dev] [PATCH V2] doc: minor fixes for GSO prog_guide
Date: Thu, 12 Oct 2017 16:59:31 +0100 [thread overview]
Message-ID: <1507823971-10998-1-git-send-email-mark.b.kavanagh@intel.com> (raw)
In-Reply-To: <1507815955-23275-1-git-send-email-mark.b.kavanagh@intel.com>
Correct two minor issues in the GSO programmer's guide:
- a note is rendered incorrectly in the middle of an unordered list;
this results in the remainder of the list appearing inside the note.
Correct indentation of the note to resolve same.
- two minor visual artifacts are present in the 'three-part-output-segment'
diagram. Remove same.
Fixes: f6010c7 ("doc: add GSO programmer's guide")
Signed-off-by: Mark Kavanagh <mark.b.kavanagh@intel.com>
Acked-by: John McNamara <john.mcnamara@intel.com>
---
v2:
- Move note back to original position.
- Remove link to note, as it is no longer needed.
- Correct note's indentation, inline with text.
.../generic_segmentation_offload_lib.rst | 18 ++--
doc/guides/prog_guide/img/gso-three-seg-mbuf.svg | 116 ++++++++++-----------
2 files changed, 68 insertions(+), 66 deletions(-)
diff --git a/doc/guides/prog_guide/generic_segmentation_offload_lib.rst b/doc/guides/prog_guide/generic_segmentation_offload_lib.rst
index 5e78f16..1c5a048 100644
--- a/doc/guides/prog_guide/generic_segmentation_offload_lib.rst
+++ b/doc/guides/prog_guide/generic_segmentation_offload_lib.rst
@@ -195,14 +195,8 @@ To segment an outgoing packet, an application must:
used to store the GSO segments' packet headers.
- a pointer to the mbuf pool for allocating indirect buffers, which are
- used to locate GSO segments' packet payloads.
-
-.. note::
-
- An application may use the same pool for both direct and indirect
- buffers. However, since each indirect mbuf simply stores a pointer, the
- application may reduce its memory consumption by creating a separate memory
- pool, containing smaller elements, for the indirect pool.
+ used to locate GSO segments' packet payloads. See note_ below for
+ additional details regarding this mempool.
- the size of each output segment, including packet headers and payload,
measured in bytes.
@@ -219,6 +213,14 @@ To segment an outgoing packet, an application must:
- a flag, that indicates whether the IPv4 headers of output segments should
contain fixed or incremental ID values.
+.. _note:
+.. note::
+
+ An application may use the same pool for both direct and indirect
+ buffers. However, since indirect mbufs simply store a pointer, the
+ application may reduce its memory consumption by creating a separate memory
+ pool, containing smaller elements, for the indirect pool.
+
2. Set the appropriate ol_flags in the mbuf.
- The GSO library use the value of an mbuf's ``ol_flags`` attribute to
diff --git a/doc/guides/prog_guide/img/gso-three-seg-mbuf.svg b/doc/guides/prog_guide/img/gso-three-seg-mbuf.svg
index f18a327..0431012 100644
--- a/doc/guides/prog_guide/img/gso-three-seg-mbuf.svg
+++ b/doc/guides/prog_guide/img/gso-three-seg-mbuf.svg
@@ -1,9 +1,9 @@
<?xml version="1.0" encoding="UTF-8" standalone="no"?>
<!DOCTYPE svg PUBLIC "-//W3C//DTD SVG 1.1//EN" "http://www.w3.org/Graphics/SVG/1.1/DTD/svg11.dtd">
-<!-- Generated by Microsoft Visio, SVG Export gso-three-seg-mbuf.svg Page-1 -->
+<!-- Generated by Microsoft Visio, SVG Export gso-three-seg-mbuf_new.svg Page-1 -->
<svg xmlns="http://www.w3.org/2000/svg" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:ev="http://www.w3.org/2001/xml-events"
- xmlns:v="http://schemas.microsoft.com/visio/2003/SVGExtensions/" width="21.8589in" height="9.63966in"
- viewBox="0 0 1573.84 694.055" xml:space="preserve" color-interpolation-filters="sRGB" class="st23">
+ xmlns:v="http://schemas.microsoft.com/visio/2003/SVGExtensions/" width="25.5895in" height="9.63966in"
+ viewBox="0 0 1842.44 694.055" xml:space="preserve" color-interpolation-filters="sRGB" class="st23">
<title>GSO three-part output segment</title>
<v:documentProperties v:langID="1033" v:metric="true" v:viewMarkup="false"/>
@@ -132,7 +132,7 @@
<v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
<v:textRect cx="87.5716" cy="673.065" width="175.15" height="41.9798"/>
<path d="M175.14 652.08 L0 652.08 L0 694.06 L175.14 694.06 L175.14 652.08" class="st8"/>
- <text x="37" y="680.57" class="st9" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>Payload 1</text> </g>
+ <text x="22.61" y="680.57" class="st9" v:langID="1033"><v:paragraph/><v:tabList/>Payload 1</text> </g>
<g id="shape15-27" v:mID="15" v:groupContext="shape" transform="translate(2.2377,-522.82)">
<title>Sheet.15</title>
<path d="M0 597.01 L0 694.06 L154.68 694.06 L154.68 597.01 L0 597.01 L0 597.01 Z" class="st4"/>
@@ -178,21 +178,14 @@
<v:textRect cx="97.4929" cy="673.065" width="194.99" height="41.9798"/>
<path d="M194.99 652.08 L0 652.08 L0 694.06 L194.99 694.06 L194.99 652.08" class="st8"/>
<text x="16.99" y="683.56" class="st10" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>Payload 1</text> </g>
- <g id="shape35-54" v:mID="35" v:groupContext="shape" transform="translate(1199.29,-21.1708)">
+ <g id="shape35-54" v:mID="35" v:groupContext="shape" transform="translate(1190.48,-32.2189)">
<title>Sheet.35</title>
<desc>Logical output segment</desc>
<v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
<v:textRect cx="164.662" cy="678.273" width="329.33" height="31.5648"/>
<path d="M329.32 662.49 L0 662.49 L0 694.06 L329.32 694.06 L329.32 662.49" class="st8"/>
- <text x="24.69" y="686.16" class="st11" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>Logical output segment</text> </g>
- <g id="shape38-58" v:mID="38" v:groupContext="shape" transform="translate(1204.65,-254.446)">
- <title>Sheet.38</title>
- <desc>Three-part output segment</desc>
- <v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
- <v:textRect cx="181.707" cy="678.273" width="363.42" height="31.5648"/>
- <path d="M363.41 662.49 L0 662.49 L0 694.06 L363.41 694.06 L363.41 662.49" class="st8"/>
- <text x="19.51" y="686.16" class="st11" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>Three-part output segment</text> </g>
- <g id="shape39-62" v:mID="39" v:groupContext="shape" transform="translate(546.25,-529.921)">
+ <text x="0" y="686.16" class="st11" v:langID="1033"><v:paragraph/><v:tabList/>Logical output segment</text> </g>
+ <g id="shape39-58" v:mID="39" v:groupContext="shape" transform="translate(546.25,-529.921)">
<title>Sheet.39</title>
<path d="M3.43 529.94 L3.46 543.61 L0.03 543.61 L0 529.94 L3.43 529.94 L3.43 529.94 ZM3.46 553.87 L3.46 557.29 L0.03
557.29 L0.03 553.87 L3.46 553.87 L3.46 553.87 ZM3.46 567.55 L3.46 581.22 L0.03 581.22 L0.03 567.55 L3.46
@@ -202,7 +195,7 @@
642.77 L3.46 642.77 ZM3.46 666.7 L3.46 670.12 L0.03 670.12 L0.03 666.7 L3.46 666.7 L3.46 666.7 ZM3.46 680.38
L3.46 694.06 L0.03 694.06 L0.03 680.38 L3.46 680.38 L3.46 680.38 Z" class="st1"/>
</g>
- <g id="shape40-64" v:mID="40" v:groupContext="shape" transform="translate(549.097,-223.749)">
+ <g id="shape40-60" v:mID="40" v:groupContext="shape" transform="translate(549.097,-223.749)">
<title>Sheet.40</title>
<path d="M6.65 402.61 L13.01 414.71 L9.98 416.32 L3.62 404.22 L6.65 402.61 L6.65 402.61 ZM17.82 423.78 L19.4 426.81 L16.37
428.42 L14.79 425.39 L17.82 423.78 L17.82 423.78 ZM24.21 435.91 L30.57 448.01 L27.54 449.59 L21.18 437.49
@@ -221,59 +214,59 @@
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Z" class="st1"/>
</g>
- <g id="shape46-66" v:mID="46" v:groupContext="shape" transform="translate(66.8445,-221.499)">
+ <g id="shape46-62" v:mID="46" v:groupContext="shape" transform="translate(66.8445,-221.499)">
<title>Sheet.46</title>
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Z" class="st4"/>
</g>
- <g id="shape47-68" v:mID="47" v:groupContext="shape" transform="translate(66.8445,-221.499)">
+ <g id="shape47-64" v:mID="47" v:groupContext="shape" transform="translate(66.8445,-221.499)">
<title>Sheet.47</title>
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</g>
- <g id="shape48-70" v:mID="48" v:groupContext="shape" transform="translate(113.27,-263.667)">
+ <g id="shape48-66" v:mID="48" v:groupContext="shape" transform="translate(113.27,-263.667)">
<title>Sheet.48</title>
<desc>Direct mbuf</desc>
<v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
<v:textRect cx="98.5041" cy="675.59" width="197.01" height="36.9302"/>
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<text x="18.66" y="684.59" class="st13" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>Direct mbuf</text> </g>
- <g id="shape51-74" v:mID="51" v:groupContext="shape" transform="translate(85.817,-233.439)">
+ <g id="shape51-70" v:mID="51" v:groupContext="shape" transform="translate(85.817,-233.439)">
<title>Sheet.51</title>
<desc>(copy of headers)</desc>
<v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
<v:textRect cx="127.916" cy="678.273" width="255.84" height="31.5648"/>
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<text x="34.33" y="685.47" class="st14" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>(copy of headers)</text> </g>
- <g id="shape53-78" v:mID="53" v:groupContext="shape" transform="translate(371.944,-275.998)">
+ <g id="shape53-74" v:mID="53" v:groupContext="shape" transform="translate(371.944,-275.998)">
<title>Sheet.53</title>
<desc>next</desc>
<v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
<v:textRect cx="33.3635" cy="678.273" width="66.73" height="31.5648"/>
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<text x="7.56" y="686.16" class="st15" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>next</text> </g>
- <g id="shape54-82" v:mID="54" v:groupContext="shape" transform="translate(695.132,-646.04)">
+ <g id="shape54-78" v:mID="54" v:groupContext="shape" transform="translate(695.132,-646.04)">
<title>Sheet.54</title>
<path d="M0 655.39 L0 694.06 L100.4 694.06 L100.4 655.39 L0 655.39 L0 655.39 Z" class="st16"/>
</g>
- <g id="shape55-84" v:mID="55" v:groupContext="shape" transform="translate(709.033,-648.946)">
+ <g id="shape55-80" v:mID="55" v:groupContext="shape" transform="translate(709.033,-648.946)">
<title>Sheet.55</title>
<desc>segsz</desc>
<v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
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<text x="7.6" y="687.11" class="st17" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>segsz</text> </g>
- <g id="shape56-88" v:mID="56" v:groupContext="shape" transform="translate(785.874,-521.182)">
+ <g id="shape56-84" v:mID="56" v:groupContext="shape" transform="translate(785.874,-521.182)">
<title>Sheet.56</title>
<path d="M0 597.27 L0 694.06 L363.41 694.06 L363.41 597.27 L0 597.27 L0 597.27 Z" class="st6"/>
</g>
- <g id="shape57-90" v:mID="57" v:groupContext="shape" transform="translate(785.874,-521.182)">
+ <g id="shape57-86" v:mID="57" v:groupContext="shape" transform="translate(785.874,-521.182)">
<title>Sheet.57</title>
<path d="M0 597.27 L363.41 597.27 L363.41 694.06 L0 694.06 L0 597.27" class="st7"/>
</g>
- <g id="shape58-93" v:mID="58" v:groupContext="shape" v:layerMember="0" transform="translate(943.158,-529.889)">
+ <g id="shape58-89" v:mID="58" v:groupContext="shape" v:layerMember="0" transform="translate(943.158,-529.889)">
<title>Sheet.58</title>
<path d="M1.35 529.91 L1.25 543.58 L4.68 543.61 L4.78 529.94 L1.35 529.91 L1.35 529.91 ZM1.15 553.84 L1.12 557.26 L4.55
557.29 L4.58 553.87 L1.15 553.84 L1.15 553.84 ZM1.05 567.52 L0.92 581.19 L4.35 581.22 L4.48 567.55 L1.05
@@ -283,61 +276,61 @@
642.74 L0.43 642.74 ZM0.23 666.67 L0.2 670.09 L3.62 670.12 L3.66 666.7 L0.23 666.67 L0.23 666.67 ZM0.13
680.35 L0 694.02 L3.43 694.06 L3.56 680.38 L0.13 680.35 L0.13 680.35 Z" class="st18"/>
</g>
- <g id="shape59-95" v:mID="59" v:groupContext="shape" transform="translate(785.874,-549.473)">
+ <g id="shape59-91" v:mID="59" v:groupContext="shape" transform="translate(785.874,-549.473)">
<title>Sheet.59</title>
<desc>Payload 1</desc>
<v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
<v:textRect cx="77.3395" cy="673.065" width="154.68" height="41.9798"/>
<path d="M154.68 652.08 L0 652.08 L0 694.06 L154.68 694.06 L154.68 652.08" class="st8"/>
- <text x="26.77" y="680.57" class="st9" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>Payload 1</text> </g>
- <g id="shape60-99" v:mID="60" v:groupContext="shape" transform="translate(952.97,-548.822)">
+ <text x="16.96" y="680.57" class="st9" v:langID="1033"><v:paragraph/><v:tabList/>Payload 1</text> </g>
+ <g id="shape60-95" v:mID="60" v:groupContext="shape" transform="translate(952.97,-548.822)">
<title>Sheet.60</title>
<desc>Payload 2</desc>
<v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
<v:textRect cx="97.4929" cy="673.065" width="194.99" height="41.9798"/>
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<text x="46.92" y="680.57" class="st9" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>Payload 2</text> </g>
- <g id="shape63-103" v:mID="63" v:groupContext="shape" transform="translate(1210.43,-551.684)">
+ <g id="shape63-99" v:mID="63" v:groupContext="shape" transform="translate(1190.48,-552.568)">
<title>Sheet.63</title>
<desc>Multi-segment input packet</desc>
<v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
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<path d="M363.41 662.49 L0 662.49 L0 694.06 L363.41 694.06 L363.41 662.49" class="st8"/>
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- <g id="shape70-107" v:mID="70" v:groupContext="shape" v:layerMember="1" transform="translate(455.049,-221.499)">
+ <text x="0" y="686.16" class="st11" v:langID="1033"><v:paragraph/><v:tabList/>Multi-segment input packet</text> </g>
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<title>Sheet.70</title>
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</g>
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+ <g id="shape71-105" v:mID="71" v:groupContext="shape" transform="translate(455.049,-221.499)">
<title>Sheet.71</title>
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+ <g id="shape72-107" v:mID="72" v:groupContext="shape" transform="translate(489.065,-263.434)">
<title>Sheet.72</title>
<desc>Indirect mbuf</desc>
<v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
<v:textRect cx="112.128" cy="675.59" width="224.26" height="36.9302"/>
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<text x="20.73" y="684.59" class="st13" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>Indirect mbuf</text> </g>
- <g id="shape75-115" v:mID="75" v:groupContext="shape" transform="translate(849.065,-281.435)">
+ <g id="shape75-111" v:mID="75" v:groupContext="shape" transform="translate(849.065,-281.435)">
<title>Sheet.75</title>
<desc>(pointer to data)</desc>
<v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
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<text x="4.49" y="686.16" class="st11" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>(pointer to data)</text> </g>
- <g id="shape77-119" v:mID="77" v:groupContext="shape" transform="translate(717.742,-563.523)">
+ <g id="shape77-115" v:mID="77" v:groupContext="shape" transform="translate(717.742,-563.523)">
<title>Sheet.77</title>
<desc>next</desc>
<v:textBlock v:margins="rect(0,0,0,0)" v:tabSpace="42.5197"/>
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<text x="15.71" y="683.67" class="st19" v:langID="1033"><v:paragraph v:horizAlign="1"/><v:tabList/>next</text> </g>
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+ <g id="shape78-119" v:mID="78" v:groupContext="shape" transform="translate(1148.17,-529.067)">
<title>Sheet.78</title>
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557.29 L4.61 553.87 L1.19 553.81 L1.19 553.81 ZM1.05 567.48 L0.92 581.16 L4.35 581.22 L4.48 567.55 L1.05
@@ -347,7 +340,7 @@
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+ <title>Sheet.113</title>
+ <desc>Three-part output segment</desc>
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--
1.9.3
next prev parent reply other threads:[~2017-10-12 15:59 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2017-10-12 13:45 [dpdk-dev] [PATCH] " Mark Kavanagh
2017-10-12 15:28 ` Mcnamara, John
2017-10-12 15:56 ` Kavanagh, Mark B
2017-10-12 15:59 ` Mark Kavanagh [this message]
2017-10-12 16:05 ` [dpdk-dev] [PATCH V3] " Mark Kavanagh
2017-10-14 0:08 ` Ferruh Yigit
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