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authorJohn Fastabend <john.r.fastabend@intel.com>2011-03-01 05:25:35 +0000
committerJeff Kirsher <jeffrey.t.kirsher@intel.com>2011-03-12 04:10:31 -0800
commit3032309b49622497430ecd2b40ff51fb204c35e8 (patch)
tree766e78c2334148421c80a213cecab5e4fe546da1 /drivers/scsi/lpfc/lpfc_bsg.h
parent0d1fe82deacdcc90458558b5d6a4a5af5db9a6c6 (diff)
ixgbe: DCB, implement capabilities flags
This implements dcbnl get and set capabilities ops. The devices supported by ixgbe can be configured to run in IEEE or CEE modes but not both. With the DCBX set capabilities bit we add an explicit signal that must be used to toggle between these modes. This patch adds logic to fail the CEE command set_hw_all() which programs the device with a CEE configuration if the CEE caps bit is not set. Similarly, IEEE set commands will fail if the IEEE caps bit is not set. We allow most CEE config set commands to occur because they do not touch the hardware until set_hw_all() is called. The one exception to the above is the {set|get}app routines. These must always be protected by caps bits to ensure side effects do not corrupt the current configured mode. By requiring the caps bit to be set correctly we can maintain a consistent configuration in the hardware for CEE or IEEE modes and prevent partial hardware configurations that may occur if user space does not send a complete IEEE or CEE configurations. It is expected that user space will signal a DCBX mode before programming device. Signed-off-by: John Fastabend <john.r.fastabend@intel.com> Tested-by: Ross Brattain <ross.b.brattain@intel.com> Signed-off-by: Jeff Kirsher <jeffrey.t.kirsher@intel.com>
Diffstat (limited to 'drivers/scsi/lpfc/lpfc_bsg.h')
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