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[SCSI] fnic: Fix SGEs limit

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Driver allows IOs with more SGEs than max SGEs supported by Palo. The current
max SGEs supported by the fnic driver is 1024. The current register settings
on Palo supports a max of 256 only. Palo would return any IO with more than
256 SGEs with an error indicating INVALID_SGLS. Fnic driver should limit the
max supported SGLs in the driver to 256 to avoid this error.

Signed-off-by: Sesidhar Baddela <sebaddel@cisco.com>
Signed-off-by: Hiral Patel <hiralpat@cisco.com>
Signed-off-by: James Bottomley <JBottomley@Parallels.com>
This commit is contained in:
Hiral Patel 2013-02-12 17:00:59 -08:00 committed by James Bottomley
parent 03298552cb
commit cfe16d5da8
1 changed files with 1 additions and 1 deletions
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2
drivers/scsi/fnic/fnic_io.h
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@ -21,7 +21,7 @@
#include <scsi/fc/fc_fcp.h>
#define FNIC_DFLT_SG_DESC_CNT 32
#define FNIC_MAX_SG_DESC_CNT 1024 /* Maximum descriptors per sgl */
#define FNIC_MAX_SG_DESC_CNT 256 /* Maximum descriptors per sgl */
#define FNIC_SG_DESC_ALIGN 16 /* Descriptor address alignment */
struct host_sg_desc {