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authorMike Christie <michaelc@cs.wisc.edu>2008-09-24 12:46:09 -0400
committerJames Bottomley <James.Bottomley@HansenPartnership.com>2008-10-13 09:28:58 -0400
commit1d9edf0270cb5a434d32e95279ce9493581906b3 (patch)
tree1b54cdd2c8b18e78a788d7f1f3c17c7b73043c24 /fs/nfsctl.c
parentcbdc14459bd7d99d20341ec057b8f4ffab2a7fb6 (diff)
[SCSI] libiscsi: fix data corruption when target has to resend data-in packets
iscsi_tcp was updating the exp_statsn (exp_statsn acknowledges status and tells the target it is ok to let the resources for a iscsi pdu to be reused) before it got all the data for pdu read into OS buffers. Data corruption was occuring if something happens to a packet and the network layer requests a retransmit, and the initiator has told the target about the udpated exp_statsn ack, then the target may be sending data from a buffer it has reused for a new iscsi pdu. This fixes the problem by having the LLD (iscsi_tcp in this case) just handle the transferring of data, and has libiscsi handle the processing of status (libiscsi completion processing is done after LLD data transfers are complete). Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
Diffstat (limited to 'fs/nfsctl.c')
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