Hi,
Am currently working on a case where we are sending few WRITE10 PDUs and
we are getting R2Ts and responding each of them with a DataOut PDU.Now
we are receiving a Positive response for the DataOuts.
We are sending a SNACK of type1(status) with begrun and runlength set to
0x0.
Now the target throws in the following dmesg.
Got Status SNACK Begrun: 0x00000000, RunLength: 0x00000000 but already
got ExpStatSN: 0x9a9ccd6b on CID: 0.
The behavior seems to be different from what RFC states which expects
the Response PDU of all DataOuts to be resent.(entire run)
RFC states
10.16.6. BegRun
The DataSN, R2TSN, or StatSN of the first PDU whose retransmission is
requested (Data/R2T and Status SNACK), or the next expected DataSN
(DataACK SNACK).
"BegRun 0 when used in conjunction with RunLength 0 means resend all
unacknowledged Data-In, R2T or Response PDUs."
BegRun MUST be 0 for a R-Data SNACK.
Is LIO behaving accordingly?
Regards
Santosh
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