- 28 Mar, 2012 7 commits
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Neil Horman authored
As with the fcoe sw transport, the bnx2fc packet handler function runs only in softirq context. Theres no need to disable bottom halves here Signed-off-by:
Neil Horman <nhorman@tuxdriver.com> Acked-by:
Bhanu Prakash Gollapudi <bprakash@broadcom.com> Signed-off-by:
Robert Love <robert.w.love@intel.com> Signed-off-by:
James Bottomley <JBottomley@Parallels.com>
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Neil Horman authored
The fcoe sw recive packet function (fcoe_rcv) only ever executes in softirq context. Given that, and the fact that no use of the fcoe_rx_list is made in irq context, its not necessecary to disable bottom halves while actually receiving the frame. Convert spin_*_bh calls in that function to their lock-only equivalents Signed-off-by:
Vasu Dev <vasu.dev@intel.com> Signed-off-by:
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Bhanu Prakash Gollapudi authored
Some switch implementations (eg., HP virtual connect FlexFabric) send two MAC descriptors in FIP FLOGI response, with first MAC descriptor (granted_mac) used as FPMA, and the second one (fcoe_mac) used as destination address for sending/receiving FCoE packets. fip_mac continues to be used for FIP traffic. This patch introduces fcoe_mac in fcoe_fcf structure. For regular switches, both fcoe_mac and fip_mac will be the same. For the switches that send additional MAC descriptor, fcoe_mac is updated. Signed-off-by:
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Vasu Dev authored
Currently fc_host mfs is not getting updated in case its changed during FLOGI and that leaves fc_host to show its initial old value in sysfs, so instead have fc_host mfs updated along with updating lport mfs during FLOGI. Also in case of bad mfs during flogi, error out instead of continuing with flogi. [ Changes made by Robert Love: condition to '>=' and added printing of lport->mfs in DBG statement. FLOGI resp processing failed without being able to compare FCoE MFS 2112 against an incoming MFS of 2112 ] Signed-off-by:
Ross Brattain <ross.b.brattain@intel.com> Signed-off-by:
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Bhanu Prakash Gollapudi authored
When handling CVL with no Vx port descriptors, lports for NPIV ports are reset before issuing the ctlr_reset. This causes FDISCs to be issued before successful FLOGI. Fix it by resetting the controller before resetting the lports. Signed-off-by:
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Neil Horman authored
commit 859b7b64 introduced the ability to call fcoe_recv_frame in softirq context. While this is beneficial to performance, its not safe to do, as it breaks the serialization of access to the lport structure (i.e. when an fcoe interface is being torn down, theres no way to serialize the teardown effort with the completion of receieve operations occuring in softirq context. As a result, lport (and other) data structures can be read and modified in parallel leading to corruption. Most notable is the vport list, which is protected by a mutex, that will cause a panic if a softirq receive while said mutex is locked. Additionaly, the ema_list, discussed here: http://lists.open-fcoe.org/pipermail/devel/2012-February/011947.html Can be corrupted if a list traversal occurs in softirq context at the same time as a list delete in process context. And generally the lport state variables will not be stable, and may lead to unpredictable results. The most direct fix is to remove the bits from the above commit that allowed fcoe_recv_frame to be called in softirq context. We just force all frames to be handled by the per-cpu rx threads. This will allow the fcoe_if_destroy's use of fcoe_percpu_clean to function properly, ensuring that no frames are being received while the lport is being torn down. Signed-off-by:
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Santosh Nayak authored
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Santosh Nayak <santoshprasadnayak@gmail.com> Acked-by:
Jack Wang <jack_wang@usish.com> Signed-off-by:
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- 27 Mar, 2012 33 commits
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Arvind Kumar authored
Fetch the config page from the device to learn max target id to set host->max_id. Also, fix some indentation issues and update the 'Maintained by' field. Signed-off-by:
Arvind Kumar <arvindkumar@vmware.com> Signed-off-by:
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Martin K. Petersen authored
The page length for the 0xb2 VPD page is defined to be 4 bytes when no provisioning descriptors are provided (DP=0). Signed-off-by:
Martin K. Petersen <martin.petersen@oracle.com> Acked-by:
Douglas Gilbert <dgilbert@interlog.com> Signed-off-by:
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Eric Sandeen authored
Add LBPRZ support to scsi_debug; i.e. read zeros for unmapped blocks. Rather than checking for unmapped blocks at read time, this just zeroes them on the backing store at unmap time so it behaves the same way. This also adds a module parameter to disable it. lbprz, "unmapped blocks return 0 on read (def=1)" [jejb: fix whitespace errors] Signed-off-by:
Eric Sandeen <sandeen@redhat.com> Acked-by:
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Mike Christie authored
If a ping or host event were to occur when memory is low we do not want to use GFP_KERNEL, because the paths sending them cannot block for data to be written. These paths might be needed to recover write paths. Use GFP_NOIO instead. Signed-off-by:
Mike Christie <michaelc@cs.wisc.edu> Signed-off-by:
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Santosh Nayak authored
Casting pointer from native data type to other type is endian-sensitive. "iocmd->offset" is 64 bit but we use only first 32 bit. It works in little-endian system but in big-endian system it will break. Signed-off-by:
Jing Huang <huangj@brocade.com> Signed-off-by:
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Vikas Chaudhary authored
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Vikas Chaudhary <vikas.chaudhary@qlogic.com> Signed-off-by:
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Vikas Chaudhary authored
We don't need to pack 'struct iscsi_chap_rec' as buffer is built locally in the driver and pass to the user-space. Signed-off-by:
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Vikas Chaudhary authored
Defined error codes for ping completion status. This patch take care of Mike Christie's commets Signed-off-by:
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Vikas Chaudhary authored
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Lee Duncan authored
The st tape driver recently added the MTWEOFI ioctl, which writes a tape filemark (EOF), like the MTWEOF ioctl, except that MTWEOFI returns immediately. This makes certain applications, like backup software, run much more quickly on buffered tape drives. Since legacy applications do not know about this new MTWEOFI ioctl, this patch adds a new ioctl option that tells the st driver to return immediately when writing an EOF (i.e. a filemark). This new flag is much like the existing flag that tells the st driver to perform writes (and certain other IOs) immediately, but this new flag only applies to writing EOFs. This new feature is controlled via the MTSETDRVBUFFER ioctl, using the newly-defined MT_ST_NOWAIT_EOF flag. Use of this new feature is displayed via the sysfs tape "options" attribute. The st documentation was updated to mention this new flag, as well as the problems that can occur from using it. Signed-off-by:
Lee Duncan <lduncan@suse.com> Acked-by:
Kai Makisara <kai.makisara@kolumbus.fi> Signed-off-by:
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James Smart authored
Signed-off-by:
Alex Iannicelli <alex.iannicelli@emulex.com> Signed-off-by:
James Smart <james.smart@emulex.com> Signed-off-by:
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
Used PCI configure space read to flush PCI function reset register write Signed-off-by:
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James Smart authored
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James Smart authored
Fixed system panic when extents enabled with large number of small blocks Signed-off-by:
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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James Smart authored
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Petr Uzel authored
Adapt comment and printk string after renaming sd_init_command to sd_prep_fn Adapt comment and printk string after renaming sd_attach to sd_probe Signed-off-by:
Petr Uzel <petr.uzel@suse.cz> Acked-by:
Hannes Reinecke <hare@suse.de> Signed-off-by:
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Santosh Yaraganavi authored
This patch adds support for Universal Flash Storage(UFS) host controllers. The UFS host controller driver includes host controller initialization method. The Initialization process involves following steps: - Initiate UFS Host Controller initialization process by writing to Host controller enable register - Configure UFS Host controller registers with host memory space datastructure offsets. - Unipro link startup procedure - Check for connected device - Configure UFS host controller to process requests - Enable required interrupts - Configure interrupt aggregation [jejb: fix warnings in 32 bit compile] Signed-off-by:
Santosh Yaraganavi <santoshsy@gmail.com> Signed-off-by:
Vinayak Holikatti <vinholikatti@gmail.com> Reviewed-by:
Arnd Bergmann <arnd@linaro.org> Reviewed-by:
Vishak G <vishak.g@samsung.com> Reviewed-by:
Girish K S <girish.shivananjappa@linaro.org> Reviewed-by:
Namjae Jeon <linkinjeon@gmail.com> Signed-off-by:
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