diff options
Diffstat (limited to 'Documentation/scsi/cxgb3i.txt')
-rw-r--r-- | Documentation/scsi/cxgb3i.txt | 11 |
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 | ||
6 | The Chelsio T3 ASIC based Adapters (S310, S320, S302, S304, Mezz cards, etc. | 6 | The Chelsio T3 ASIC based Adapters (S310, S320, S302, S304, Mezz cards, etc. |
7 | series of products) supports iSCSI acceleration and iSCSI Direct Data Placement | 7 | series 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 |
9 | as CRC computation and verification, and direct DMA to the final host memory | 9 | as CRC computation and verification, and direct DMA to the final host memory |
10 | destination: | 10 | destination: |
@@ -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 | ||
70 | 3. edit /etc/iscsi/iscsid.conf | 70 | 3. 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 | ||