[SCSI] qla2xxx: Export class-of-service (COS) information.

Export COS information for the fc_host and fc_remote_port
objects added by the driver.

Signed-off-by: Andrew Vasquez <andrew.vasquez@qlogic.com>
Signed-off-by: James Bottomley <James.Bottomley@SteelEye.com>

1 files changed, 14 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_mbx.c b/drivers/scsi/qla2xxx/qla_mbx.c
index 409ea0ac4032..774309a77c05 100644
--- a/drivers/scsi/qla2xxx/qla_mbx.c
+++ b/drivers/scsi/qla2xxx/qla_mbx.c
@@ -19,6 +19,7 @@
 #include "qla_def.h"
 
 #include <linux/delay.h>
+#include <scsi/scsi_transport_fc.h>
 
 static void
 qla2x00_mbx_sem_timeout(unsigned long data)
@@ -1326,6 +1327,10 @@ qla2x00_get_port_database(scsi_qla_host_t *ha, fc_port_t *fcport, uint8_t opt)
                         fcport->port_type = FCT_INITIATOR;
                 else
                         fcport->port_type = FCT_TARGET;
+
+                /* Passback COS information. */
+                fcport->supported_classes = (pd->options & BIT_4) ?
+                    FC_COS_CLASS2: FC_COS_CLASS3;
         }
 
 gpd_error_out:
@@ -1661,6 +1666,13 @@ qla24xx_login_fabric(scsi_qla_host_t *ha, uint16_t loop_id, uint8_t domain,
                                 mb[1] |= BIT_1;
                 } else
                         mb[1] = BIT_0;
+
+                /* Passback COS information. */
+                mb[10] = 0;
+                if (lg->io_parameter[7] || lg->io_parameter[8])
+                        mb[10] |= BIT_0;        /* Class 2. */
+                if (lg->io_parameter[9] || lg->io_parameter[10])
+                        mb[10] |= BIT_1;        /* Class 3. */
         }
 
         dma_pool_free(ha->s_dma_pool, lg, lg_dma);
@@ -1723,6 +1735,8 @@ qla2x00_login_fabric(scsi_qla_host_t *ha, uint16_t loop_id, uint8_t domain,
                 mb[2] = mcp->mb[2];
                 mb[6] = mcp->mb[6];
                 mb[7] = mcp->mb[7];
+                /* COS retrieved from Get-Port-Database mailbox command. */
+                mb[10] = 0;
         }
 
         if (rval != QLA_SUCCESS) {