nvme-fabrics: reject I/O to offline device

[linux-2.6-microblaze.git] / drivers / nvme / host / fabrics.h

diff --git a/drivers/nvme/host/fabrics.h b/drivers/nvme/host/fabrics.h
index a9c1e3b..733010d 100644 (file)
--- a/drivers/nvme/host/fabrics.h
+++ b/drivers/nvme/host/fabrics.h
@@ -15,6 +15,8 @@
 #define NVMF_DEF_RECONNECT_DELAY       10
 /* default to 600 seconds of reconnect attempts before giving up */
 #define NVMF_DEF_CTRL_LOSS_TMO         600
+/* default is -1: the fail fast mechanism is disabled  */
+#define NVMF_DEF_FAIL_FAST_TMO         -1
 
 /*
  * Define a host as seen by the target.  We allocate one at boot, but also
@@ -56,6 +58,7 @@ enum {
        NVMF_OPT_NR_WRITE_QUEUES = 1 << 17,
        NVMF_OPT_NR_POLL_QUEUES = 1 << 18,
        NVMF_OPT_TOS            = 1 << 19,
+       NVMF_OPT_FAIL_FAST_TMO  = 1 << 20,
 };
 
 /**
@@ -89,6 +92,7 @@ enum {
  * @nr_write_queues: number of queues for write I/O
  * @nr_poll_queues: number of queues for polling I/O
  * @tos: type of service
+ * @fast_io_fail_tmo: Fast I/O fail timeout in seconds
  */
 struct nvmf_ctrl_options {
        unsigned                mask;
@@ -111,6 +115,7 @@ struct nvmf_ctrl_options {
        unsigned int            nr_write_queues;
        unsigned int            nr_poll_queues;
        int                     tos;
+       int                     fast_io_fail_tmo;
 };
 
 /*