Merge remote-tracking branch 'scsi/for-next'

[deliverable/linux.git] / drivers / scsi / ibmvscsi / ibmvfc.c

diff --git a/drivers/scsi/ibmvscsi/ibmvfc.c b/drivers/scsi/ibmvscsi/ibmvfc.c
index ab67ec4b6bd632587e18bccc30ae72dceb8fdfd8..6b92169abaebf57e26f5367f50b0ddbe48e84192 100644 (file)
--- a/drivers/scsi/ibmvscsi/ibmvfc.c
+++ b/drivers/scsi/ibmvscsi/ibmvfc.c
@@ -52,6 +52,7 @@ static unsigned int max_requests = IBMVFC_MAX_REQUESTS_DEFAULT;
 static unsigned int disc_threads = IBMVFC_MAX_DISC_THREADS;
 static unsigned int ibmvfc_debug = IBMVFC_DEBUG;
 static unsigned int log_level = IBMVFC_DEFAULT_LOG_LEVEL;
+static unsigned int cls3_error = IBMVFC_CLS3_ERROR;
 static LIST_HEAD(ibmvfc_head);
 static DEFINE_SPINLOCK(ibmvfc_driver_lock);
 static struct scsi_transport_template *ibmvfc_transport_template;
@@ -86,6 +87,9 @@ MODULE_PARM_DESC(debug, "Enable driver debug information. "
 module_param_named(log_level, log_level, uint, 0);
 MODULE_PARM_DESC(log_level, "Set to 0 - 4 for increasing verbosity of device driver. "
                 "[Default=" __stringify(IBMVFC_DEFAULT_LOG_LEVEL) "]");
+module_param_named(cls3_error, cls3_error, uint, 0);
+MODULE_PARM_DESC(log_level, "Enable FC Class 3 Error Recovery. "
+                "[Default=" __stringify(IBMVFC_CLS3_ERROR) "]");
 
 static const struct {
        u16 status;
@@ -1335,6 +1339,9 @@ static int ibmvfc_map_sg_data(struct scsi_cmnd *scmd,
        struct srp_direct_buf *data = &vfc_cmd->ioba;
        struct ibmvfc_host *vhost = dev_get_drvdata(dev);
 
+       if (cls3_error)
+               vfc_cmd->flags |= cpu_to_be16(IBMVFC_CLASS_3_ERR);
+
        sg_mapped = scsi_dma_map(scmd);
        if (!sg_mapped) {
                vfc_cmd->flags |= cpu_to_be16(IBMVFC_NO_MEM_DESC);
@@ -3381,6 +3388,10 @@ static void ibmvfc_tgt_send_prli(struct ibmvfc_target *tgt)
        prli->parms.type = IBMVFC_SCSI_FCP_TYPE;
        prli->parms.flags = cpu_to_be16(IBMVFC_PRLI_EST_IMG_PAIR);
        prli->parms.service_parms = cpu_to_be32(IBMVFC_PRLI_INITIATOR_FUNC);
+       prli->parms.service_parms |= cpu_to_be32(IBMVFC_PRLI_READ_FCP_XFER_RDY_DISABLED);
+
+       if (cls3_error)
+               prli->parms.service_parms |= cpu_to_be32(IBMVFC_PRLI_RETRY);
 
        ibmvfc_set_tgt_action(tgt, IBMVFC_TGT_ACTION_INIT_WAIT);
        if (ibmvfc_send_event(evt, vhost, default_timeout)) {