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| author |   Tyrel Datwyler <tyreld@linux.ibm.com> | 2021-01-14 14:31:39 -0600 |
|---|---|---|
| committer |   Martin K. Petersen <martin.petersen@oracle.com> | 2021-01-14 22:27:45 -0500 |
| commit | e95eef3fc0bcb3c5a3145c583f0d177f02381195 (patch) | |
| tree | c9d2bf4d648639490eb1046948c4dd10a017cc0f /drivers/scsi/ibmvscsi/ibmvfc.h | |
| parent | scsi: ibmvfc: Map/request irq and register Sub-CRQ interrupt handler (diff) | |
| download | linux-dev-e95eef3fc0bcb3c5a3145c583f0d177f02381195.tar.xz linux-dev-e95eef3fc0bcb3c5a3145c583f0d177f02381195.zip | |
scsi: ibmvfc: Implement channel enquiry and setup commands
New NPIV_ENQUIRY_CHANNEL and NPIV_SETUP_CHANNEL management datagrams (MADs)
were defined in a previous patchset. If the client advertises a desire to
use channels and the partner VIOS is channel capable then the client must
proceed with channel enquiry to determine the maximum number of channels
the VIOS is capable of providing, and registering SubCRQs via channel setup
with the VIOS immediately following NPIV Login. This handshaking should not
be performed for subsequent NPIV Logins unless the CRQ connection has been
reset.
Implement these two new MADs and issue them following a successful NPIV
login where the VIOS has set the SUPPORT_CHANNELS capability bit in the
NPIV Login response.
Link: https://lore.kernel.org/r/20210114203148.246656-13-tyreld@linux.ibm.com
Reviewed-by: Brian King <brking@linux.vnet.ibm.com>
Signed-off-by: Tyrel Datwyler <tyreld@linux.ibm.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Diffstat (limited to 'drivers/scsi/ibmvscsi/ibmvfc.h')
| -rw-r--r-- | drivers/scsi/ibmvscsi/ibmvfc.h | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/scsi/ibmvscsi/ibmvfc.h b/drivers/scsi/ibmvscsi/ibmvfc.h index bdafe9956649..3d76cd3c1fd9 100644 --- a/drivers/scsi/ibmvscsi/ibmvfc.h +++ b/drivers/scsi/ibmvscsi/ibmvfc.h @@ -854,10 +854,13 @@ struct ibmvfc_host { struct ibmvfc_npiv_login login_info; union ibmvfc_npiv_login_data *login_buf; dma_addr_t login_buf_dma; + struct ibmvfc_channel_setup *channel_setup_buf; + dma_addr_t channel_setup_dma; int disc_buf_sz; int log_level; struct ibmvfc_discover_targets_entry *disc_buf; struct mutex passthru_mutex; + int max_vios_scsi_channels; int task_set; int init_retries; int discovery_threads; |