user/sven/linux.git/include/scsi, branch v2.6.32.58

ses: Avoid kernel panic when lun 0 is not mapped

2011-04-14T23:53:20Z

commit d1e12de804f9d8ad114786ca7c2ce593cba79891 upstream. During device discovery, scsi mid layer sends INQUIRY command to LUN 0. If the LUN 0 is not mapped to host, it creates a temporary scsi_device with LUN id 0 and sends REPORT_LUNS command to it. After the REPORT_LUNS succeeds, it walks through the LUN table and adds each LUN found to sysfs. At the end of REPORT_LUNS lun table scan, it will delete the temporary scsi_device of LUN 0. When scsi devices are added to sysfs, it calls add_dev function of all the registered class interfaces. If ses driver has been registered, ses_intf_add() of ses module will be called. This function calls scsi_device_enclosure() to check the inquiry data for EncServ bit. Since inquiry was not allocated for temporary LUN 0 scsi_device, it will cause NULL pointer exception. To fix the problem, sdev->inquiry is checked for NULL before reading it. Signed-off-by: Somasundaram Krishnasamy Signed-off-by: Babu Moger Signed-off-by: James Bottomley Signed-off-by: Greg Kroah-Hartman

SCSI: fc-transport: Use packed modifier for fc_bsg_request structure.

2010-04-26T14:41:30Z

commit eda05a28ec52be40086400a1b606d211276f0e41 upstream. The 32bit kernel does not add padding bytes in the fc_bsg_request structure whereas the 64bit kernel adds padding bytes in the fc_bsg_request structure. Due to this, structure elements gets mismatched with 32bit application and 64bit kernel.To resolve this, used packed modifier to avoid adding padding bytes. Signed-off-by: Giridhar Malavali Signed-off-by: James Bottomley Cc: maximilian attems Signed-off-by: Greg Kroah-Hartman

libfc: fix free of fc_rport_priv with timer pending

2010-01-28T23:01:38Z

commit b4a9c7ede96e90f7b1ec009ce7256059295e76df upstream. Timer crashes were caused by freeing a struct fc_rport_priv with a timer pending, causing the timer facility list to be corrupted. This was during FC uplink flap tests with a lot of targets. After discovery, we were doing an PLOGI on an rdata that was in DELETE state but not yet removed from the lookup list. This moved the rdata from DELETE state to PLOGI state. If the PLOGI exchange allocation failed and needed to be retried, the timer scheduling could race with the free being done by fc_rport_work(). When fc_rport_login() is called on a rport in DELETE state, move it to a new state RESTART. In fc_rport_work, when handling a LOGO, STOPPED or FAILED event, look for restart state. In the RESTART case, don't take the rdata off the list and after the transport remote port is deleted and exchanges are reset, re-login to the remote port. Note that the new RESTART state also corrects a problem we had when re-discovering a port that had moved to DELETE state. In that case, a new rdata was created, but the old rdata would do an exchange manager reset affecting the FC_ID for both the new rdata and old rdata. With the new state, the new port isn't logged into until after any old exchanges are reset. Signed-off-by: Joe Eykholt Signed-off-by: Robert Love Signed-off-by: James Bottomley Signed-off-by: Greg Kroah-Hartman

libfc: Fix frags in frame exceeding SKB_MAX_FRAGS in fc_fcp_send_data

2010-01-28T23:01:36Z

commit d37322a43ebac79eef417149f5696390cf8872db upstream. In case of sequence offload, in fc_fcp_send_data(), the skb_fill_page_info() called may end up adding more frags to the skb_shinfo(fp_skb(fp))->frags[], exceeding SKB_MAX_FRAGS, this eventually corrupts the memory. I am adding the FR_FRAME_SG_LEN back, but as SKB_MAX_FRAGS -1, leaving 1 for our fcoe_eof_crc page. And send will be broken into multiple large sends if the frame already contains more frags than skb handle. Signed-off-by: Yi Zou Signed-off-by: Robert Love Signed-off-by: James Bottomley Signed-off-by: Greg Kroah-Hartman

SCSI: osd_protocol.h: Add missing #include

2009-12-14T17:44:45Z

commit 0899638688f223fd9e9fee60d662665e11693d12 upstream. include/scsi/osd_protocol.h uses ALIGN() without an #include , leading to: | include/scsi/osd_protocol.h:362: error: implicit declaration of function 'ALIGN' Signed-off-by: Martin Michlmayr Signed-off-by: Boaz Harrosh Signed-off-by: James Bottomley Signed-off-by: Greg Kroah-Hartman

SCSI: scsi_lib_dma: fix bug with dma maps on nested scsi objects

2009-12-14T17:44:44Z

commit d139b9bd0e52dda14fd13412e7096e68b56d0076 upstream. Some of our virtual SCSI hosts don't have a proper bus parent at the top, which can be a problem for doing DMA on them This patch makes the host device cache a pointer to the physical bus device and provides an extra API for setting it (the normal API picks it up from the parent). This patch also modifies the qla2xxx and lpfc vport logic to use the new DMA host setting API. Acked-By: James Smart Signed-off-by: James Bottomley Signed-off-by: Greg Kroah-Hartman

[SCSI] fix async scan add/remove race resulting in an oops

2009-11-26T15:43:39Z

Async scanning introduced a very wide window where the SCSI device is up and running but has not yet been added to sysfs. We delay the adding until all scans have completed to retain the same ordering as sync scanning. This delay in visibility causes an oops if a device is removed before we make it visible because the SCSI removal routines have an inbuilt assumption that if a device is in SDEV_RUNNING state, it must be visible (which is not necessarily true in the async scanning case). Fix this by introducing an additional is_visible flag which we can use to condition the tear down so we do the right thing for running but not yet made visible. Reported-by: Alexey Kuznetsov Signed-off-by: James Bottomley

[SCSI] Fix incorrect reporting of host protection capabilities

2009-11-06T17:50:52Z

The advent of DIF Type 2 devices exposed some missing break statements in the protection mask switch constructs. However, rewriting the code to use an index into a small static array seemed like a more elegant solution. Signed-off-by: Martin K. Petersen Signed-off-by: James Bottomley

[SCSI] libiscsi: iscsi_session_setup to allow for private space

2009-10-02T19:01:39Z

This patch contains changes that allow iscsi_session_setup to allocate private space for LLD's Signed-off-by: Jayamohan Kallickal Acked-by: Mike Christie Signed-off-by: James Bottomley

[SCSI] sd: Support disks formatted with DIF Type 2

2009-10-02T14:47:04Z

Disks formatted with DIF Type 2 reject READ/WRITE 6/10/12/16 commands when protection is enabled. Only the 32-byte variants are supported. Implement support for issusing 32-byte READ/WRITE and enable Type 2 drives in the protection type detection logic. Signed-off-by: Martin K. Petersen Signed-off-by: James Bottomley