From ed6c95e5229755f18cb31f70d0bb47361a0dc42b Mon Sep 17 00:00:00 2001
From: Jan Hoffmann <jan@3e8.eu>
Date: Tue, 24 Mar 2026 15:24:54 +0100
Subject: [PATCH] Improve compatibility with 2.5G SFP modules

Some modules might report a nominal bitrate of 2500 Mbd or 3200 Mbd
instead of 3100 Mbd. Accept the entire range to make them work.
---
 rtlplayground.c | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/rtlplayground.c b/rtlplayground.c
index d2727b2..2845447 100644
--- a/rtlplayground.c
+++ b/rtlplayground.c
@@ -997,7 +997,7 @@ static inline uint8_t sfp_rate_to_sds_config(register uint8_t rate)
 {
 	if (rate == 0xd)
 		return SDS_1000BX_FIBER;
-	if (rate == 0x1f)  // Ethernet 2.5 GBit
+	if (rate >= 0x19 && rate <= 0x20)  // Ethernet 2.5 GBit
 		return SDS_HSG;
 	if (rate > 0x65 && rate < 0x70)
 		return SDS_10GR;