[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>

4 files changed, 26 insertions, 0 deletions

diff --git a/drivers/scsi/qla2xxx/qla_attr.c b/drivers/scsi/qla2xxx/qla_attr.c
index 659a5d63467d..d05280eecc60 100644
--- a/drivers/scsi/qla2xxx/qla_attr.c
+++ b/drivers/scsi/qla2xxx/qla_attr.c
@@ -304,10 +304,13 @@ struct fc_function_template qla2xxx_transport_functions = {
 
         .show_host_node_name = 1,
         .show_host_port_name = 1,
+        .show_host_supported_classes = 1,
+
         .get_host_port_id = qla2x00_get_host_port_id,
         .show_host_port_id = 1,
 
         .dd_fcrport_size = sizeof(struct fc_port *),
+        .show_rport_supported_classes = 1,
 
         .get_starget_node_name = qla2x00_get_starget_node_name,
         .show_starget_node_name = 1,
@@ -329,4 +332,5 @@ qla2x00_init_host_attr(scsi_qla_host_t *ha)
             be64_to_cpu(*(uint64_t *)ha->init_cb->node_name);
         fc_host_port_name(ha->host) =
             be64_to_cpu(*(uint64_t *)ha->init_cb->port_name);
+        fc_host_supported_classes(ha->host) = FC_COS_CLASS3;
 }
diff --git a/drivers/scsi/qla2xxx/qla_def.h b/drivers/scsi/qla2xxx/qla_def.h
index 1c6d366f4fad..38848c38ad8d 100644
--- a/drivers/scsi/qla2xxx/qla_def.h
+++ b/drivers/scsi/qla2xxx/qla_def.h
@@ -1673,6 +1673,7 @@ typedef struct fc_port {
         uint8_t cur_path;               /* current path id */
 
         struct fc_rport *rport;
+        u32 supported_classes;
 } fc_port_t;
 
 /*
diff --git a/drivers/scsi/qla2xxx/qla_init.c b/drivers/scsi/qla2xxx/qla_init.c
index a6d2559217cd..09b23f70fd66 100644
--- a/drivers/scsi/qla2xxx/qla_init.c
+++ b/drivers/scsi/qla2xxx/qla_init.c
@@ -1697,6 +1697,7 @@ qla2x00_alloc_fcport(scsi_qla_host_t *ha, int flags)
         fcport->iodesc_idx_sent = IODESC_INVALID_INDEX;
         atomic_set(&fcport->state, FCS_UNCONFIGURED);
         fcport->flags = FCF_RLC_SUPPORT;
+        fcport->supported_classes = FC_COS_UNSPECIFIED;
 
         return (fcport);
 }
@@ -2075,6 +2076,7 @@ qla2x00_reg_remote_port(scsi_qla_host_t *ha, fc_port_t *fcport)
                 return;
         }
         rport->dd_data = fcport;
+        rport->supported_classes = fcport->supported_classes;
 
         rport_ids.roles = FC_RPORT_ROLE_UNKNOWN;
         if (fcport->port_type == FCT_INITIATOR)
@@ -2794,6 +2796,11 @@ qla2x00_fabric_login(scsi_qla_host_t *ha, fc_port_t *fcport,
                                 }
                         }
 
+                        if (mb[10] & BIT_0)
+                                fcport->supported_classes |= FC_COS_CLASS2;
+                        if (mb[10] & BIT_1)
+                                fcport->supported_classes |= FC_COS_CLASS3;
+
                         rval = QLA_SUCCESS;
                         break;
                 } else if (mb[0] == MBS_LOOP_ID_USED) {
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) {