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path: root/drivers/scsi/libiscsi_tcp.c
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2009-04-27[SCSI] iscsi_tcp: don't fire conn error if pdu init failsMike Christie
If a command's scsi cmd pdu setup fails then we can just fail the IO to the scsi layer. If a DATA_OUT for a R2T fails then we will want to drop the session, because it means we got a bad request from the target (iscsi protocol error). This patch has us propogate the error upwards so libiscsi_tcp or libiscsi can decide what the best action is to take. It also fixes a bug where we could try to grab the session lock while holding it, because if iscsi_tcp drops the session in the pdu setup callout the session lock is held when setting up the scsi cmd pdu. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-03-13[SCSI] libiscsi_tcp: replace tcp_debug/scsi_debug logging with session/conn ↵Mike Christie
logging This makes the logging a compile time option and replaces the scsi_debug and tcp_debug macro with session and connection ones that print out a driver model id prefix. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2009-01-13[SCSI] iscsi_tcp: make padbuf non-staticKaren Xie
virt_to_page() call should not be used on kernel text and data addresses. virt_to_page() is used by sg_init_one(). So change padbuf to be allocated within iscsi_segment. Signed-off-by: Karen Xie <kxie@chelsio.com> Acked-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29[SCSI] libiscsi_tcp: support padding offloadMike Christie
cxgb3i does not offload the processing of the header, but it will always process the padding. This patch adds a padding offload flag to detect when the LLD supports this. The patch also modifies the header processing so that we do not try to read/bypass the header dugest in the skb. cxgb3i will not include it with the header like with other offload cards. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29[SCSI] libiscsi: pass opcode into alloc_pdu calloutMike Christie
We do not need to allocate a itt for data_out, so this passes the opcode to the alloc_pdu callout. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>
2008-12-29[SCSI] iscsi_tcp: split module into lib and lldMike Christie
As explained in the previous mails, cxgb3i needs iscsi_tcp's r2t/data_out and data_in procesing so this just moves functions that both drivers want to use to a new module libiscsi_tcp. The next patch will hook iscsi_tcp in. Signed-off-by: Mike Christie <michaelc@cs.wisc.edu> Signed-off-by: James Bottomley <James.Bottomley@HansenPartnership.com>