From: Shyam Sundar <ssundar@marvell.com>
Date: Wed, 21 Oct 2020 02:27:11 -0700
Subject: scsi: fc: Update formal FPIN descriptor definitions
Patch-mainline: v5.11-rc1
Git-commit: 874163aab75a6cd7422e71f1fbc6db12977fcf1d
References: bsc#1190576
Add Fabric Performance Impact Notification (FPIN) descriptor definitions
for the following FPINs:
- Delivery Notification Descriptor
- Peer Congestion Notification Descriptor
- Congestion Notification Descriptor
Link: https://lore.kernel.org/r/20201021092715.22669-2-njavali@marvell.com
Reviewed-by: James Smart <james.smart@broadcom.com>
Reviewed-by: Himanshu Madhani <himanshu.madhani@oracle.com>
Signed-off-by: Shyam Sundar <ssundar@marvell.com>
Signed-off-by: Nilesh Javali <njavali@marvell.com>
Signed-off-by: Martin K. Petersen <martin.petersen@oracle.com>
Acked-by: Daniel Wagner <dwagner@suse.de>
---
include/uapi/scsi/fc/fc_els.h | 114 +++++++++++++++++++++++++++++++++++++++++-
1 file changed, 113 insertions(+), 1 deletion(-)
--- a/include/uapi/scsi/fc/fc_els.h
+++ b/include/uapi/scsi/fc/fc_els.h
@@ -928,7 +928,9 @@ enum fc_els_clid_ic {
ELS_CLID_IC_LIP = 8, /* receiving LIP */
};
-
+/*
+ * Link Integrity event types
+ */
enum fc_fpin_li_event_types {
FPIN_LI_UNKNOWN = 0x0,
FPIN_LI_LINK_FAILURE = 0x1,
@@ -955,6 +957,54 @@ enum fc_fpin_li_event_types {
{ FPIN_LI_DEVICE_SPEC, "Device Specific" }, \
}
+/*
+ * Delivery event types
+ */
+enum fc_fpin_deli_event_types {
+ FPIN_DELI_UNKNOWN = 0x0,
+ FPIN_DELI_TIMEOUT = 0x1,
+ FPIN_DELI_UNABLE_TO_ROUTE = 0x2,
+ FPIN_DELI_DEVICE_SPEC = 0xF,
+};
+
+/*
+ * Initializer useful for decoding table.
+ * Please keep this in sync with the above definitions.
+ */
+#define FC_FPIN_DELI_EVT_TYPES_INIT { \
+ { FPIN_DELI_UNKNOWN, "Unknown" }, \
+ { FPIN_DELI_TIMEOUT, "Timeout" }, \
+ { FPIN_DELI_UNABLE_TO_ROUTE, "Unable to Route" }, \
+ { FPIN_DELI_DEVICE_SPEC, "Device Specific" }, \
+}
+
+/*
+ * Congestion event types
+ */
+enum fc_fpin_congn_event_types {
+ FPIN_CONGN_CLEAR = 0x0,
+ FPIN_CONGN_LOST_CREDIT = 0x1,
+ FPIN_CONGN_CREDIT_STALL = 0x2,
+ FPIN_CONGN_OVERSUBSCRIPTION = 0x3,
+ FPIN_CONGN_DEVICE_SPEC = 0xF,
+};
+
+/*
+ * Initializer useful for decoding table.
+ * Please keep this in sync with the above definitions.
+ */
+#define FC_FPIN_CONGN_EVT_TYPES_INIT { \
+ { FPIN_CONGN_CLEAR, "Clear" }, \
+ { FPIN_CONGN_LOST_CREDIT, "Lost Credit" }, \
+ { FPIN_CONGN_CREDIT_STALL, "Credit Stall" }, \
+ { FPIN_CONGN_OVERSUBSCRIPTION, "Oversubscription" }, \
+ { FPIN_CONGN_DEVICE_SPEC, "Device Specific" }, \
+}
+
+enum fc_fpin_congn_severity_types {
+ FPIN_CONGN_SEVERITY_WARNING = 0xF1,
+ FPIN_CONGN_SEVERITY_ERROR = 0xF7,
+};
/*
* Link Integrity Notification Descriptor
@@ -987,6 +1037,68 @@ struct fc_fn_li_desc {
};
/*
+ * Delivery Notification Descriptor
+ */
+struct fc_fn_deli_desc {
+ __be32 desc_tag; /* Descriptor Tag (0x00020002) */
+ __be32 desc_len; /* Length of Descriptor (in bytes).
+ * Size of descriptor excluding
+ * desc_tag and desc_len fields.
+ */
+ __be64 detecting_wwpn; /* Port Name that detected event */
+ __be64 attached_wwpn; /* Port Name of device attached to
+ * detecting Port Name
+ */
+ __be32 deli_reason_code;/* see enum fc_fpin_deli_event_types */
+};
+
+/*
+ * Peer Congestion Notification Descriptor
+ */
+struct fc_fn_peer_congn_desc {
+ __be32 desc_tag; /* Descriptor Tag (0x00020003) */
+ __be32 desc_len; /* Length of Descriptor (in bytes).
+ * Size of descriptor excluding
+ * desc_tag and desc_len fields.
+ */
+ __be64 detecting_wwpn; /* Port Name that detected event */
+ __be64 attached_wwpn; /* Port Name of device attached to
+ * detecting Port Name
+ */
+ __be16 event_type; /* see enum fc_fpin_congn_event_types */
+ __be16 event_modifier; /* Implementation specific value
+ * describing the event type
+ */
+ __be32 event_period; /* duration (ms) of the detected
+ * congestion event
+ */
+ __be32 pname_count; /* number of portname_list elements */
+ __be64 pname_list[0]; /* list of N_Port_Names accessible
+ * through the attached port
+ */
+};
+
+/*
+ * Congestion Notification Descriptor
+ */
+struct fc_fn_congn_desc {
+ __be32 desc_tag; /* Descriptor Tag (0x00020004) */
+ __be32 desc_len; /* Length of Descriptor (in bytes).
+ * Size of descriptor excluding
+ * desc_tag and desc_len fields.
+ */
+ __be16 event_type; /* see enum fc_fpin_congn_event_types */
+ __be16 event_modifier; /* Implementation specific value
+ * describing the event type
+ */
+ __be32 event_period; /* duration (ms) of the detected
+ * congestion event
+ */
+ __u8 severity; /* command */
+ __u8 resv[3]; /* reserved - must be zero */
+};
+
+/*
* ELS_FPIN - Fabric Performance Impact Notification
*/
struct fc_els_fpin {