From 643ecdf115f785260ee16636df881dc1294d57dc Mon Sep 17 00:00:00 2001
From: Gleb Chesnokov <gleb.chesnokov@scst.dev>
Date: Mon, 19 Oct 2026 15:10:51 +0300
Subject: [PATCH] scst/include/backport.h: Define the 128 Gbit FC speed for
 older kernels

The imported QLA29xx speed reporting uses FC_PORTSPEED_128GBIT. Supply
its upstream value before v4.16, following the existing 64 Gbit
definition and retaining vendor definitions when present. The newer
QLogic driver is the only current consumer; the legacy driver and other
transports are unaffected.
---
 scst/include/backport.h | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/scst/include/backport.h b/scst/include/backport.h
index 9668ff38e..255585a36 100644
--- a/scst/include/backport.h
+++ b/scst/include/backport.h
@@ -2482,6 +2482,15 @@ enum {
 #define FC_PORTSPEED_64GBIT 0x1000
 #endif
 
+#if LINUX_VERSION_CODE < KERNEL_VERSION(4, 16, 0) && \
+	!defined(FC_PORTSPEED_128GBIT)
+/*
+ * See also commit cc019a5a3b58 ("scsi: scsi_transport_fc: fix typos on 64/128
+ * GBit define names") # v4.16.
+ */
+#define FC_PORTSPEED_128GBIT 0x2000
+#endif
+
 #ifndef FC_PORT_ROLE_UNKNOWN
 #define FC_PORT_ROLE_UNKNOWN			0x00
 #define FC_PORT_ROLE_FCP_TARGET			0x01