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authorIngo Molnar <mingo@elte.hu>2009-03-05 05:45:22 -0500
committerIngo Molnar <mingo@elte.hu>2009-03-05 05:45:22 -0500
commita140feab42d1cfd811930ab76104559c19dfc4b0 (patch)
tree41fd871990e888dd5616a6bf1891a1ff307221df /Documentation/scsi/cxgb3i.txt
parent1075414b06109a99b0e87601e84c74a95bd45681 (diff)
parentfec6c6fec3e20637bee5d276fb61dd8b49a3f9cc (diff)
Merge commit 'v2.6.29-rc7' into core/locking
Diffstat (limited to 'Documentation/scsi/cxgb3i.txt')
-rw-r--r--Documentation/scsi/cxgb3i.txt11
1 files changed, 5 insertions, 6 deletions
diff --git a/Documentation/scsi/cxgb3i.txt b/Documentation/scsi/cxgb3i.txt
index 8141fa01978e..7ac8032ee9b2 100644
--- a/Documentation/scsi/cxgb3i.txt
+++ b/Documentation/scsi/cxgb3i.txt
@@ -4,7 +4,7 @@ Introduction
4============ 4============
5 5
6The Chelsio T3 ASIC based Adapters (S310, S320, S302, S304, Mezz cards, etc. 6The Chelsio T3 ASIC based Adapters (S310, S320, S302, S304, Mezz cards, etc.
7series of products) supports iSCSI acceleration and iSCSI Direct Data Placement 7series of products) support iSCSI acceleration and iSCSI Direct Data Placement
8(DDP) where the hardware handles the expensive byte touching operations, such 8(DDP) where the hardware handles the expensive byte touching operations, such
9as CRC computation and verification, and direct DMA to the final host memory 9as CRC computation and verification, and direct DMA to the final host memory
10destination: 10destination:
@@ -31,9 +31,9 @@ destination:
31 the TCP segments onto the wire. It handles TCP retransmission if 31 the TCP segments onto the wire. It handles TCP retransmission if
32 needed. 32 needed.
33 33
34 On receving, S3 h/w recovers the iSCSI PDU by reassembling TCP 34 On receiving, S3 h/w recovers the iSCSI PDU by reassembling TCP
35 segments, separating the header and data, calculating and verifying 35 segments, separating the header and data, calculating and verifying
36 the digests, then forwards the header to the host. The payload data, 36 the digests, then forwarding the header to the host. The payload data,
37 if possible, will be directly placed into the pre-posted host DDP 37 if possible, will be directly placed into the pre-posted host DDP
38 buffer. Otherwise, the payload data will be sent to the host too. 38 buffer. Otherwise, the payload data will be sent to the host too.
39 39
@@ -68,9 +68,8 @@ The following steps need to be taken to accelerates the open-iscsi initiator:
68 sure the ip address is unique in the network. 68 sure the ip address is unique in the network.
69 69
703. edit /etc/iscsi/iscsid.conf 703. edit /etc/iscsi/iscsid.conf
71 The default setting for MaxRecvDataSegmentLength (131072) is too big, 71 The default setting for MaxRecvDataSegmentLength (131072) is too big;
72 replace "node.conn[0].iscsi.MaxRecvDataSegmentLength" to be a value no 72 replace with a value no bigger than 15360 (for example 8192):
73 bigger than 15360 (for example 8192):
74 73
75 node.conn[0].iscsi.MaxRecvDataSegmentLength = 8192 74 node.conn[0].iscsi.MaxRecvDataSegmentLength = 8192
76 75