commit de34b1674cb0b876bc49344ec82a070984b02fb0
Author: Andrey V. Elsukov <bu7cher@yandex.ru>
Date:   Wed Aug 30 21:22:21 2017 +0300

    Add a hack to support 10G-SR SFP+ modules on Intel 82598 DA cards.

diff --git a/sys/dev/ixgbe/ixgbe_phy.c b/sys/dev/ixgbe/ixgbe_phy.c
index 88206c7f9cb..5caadba8ae5 100644
--- a/sys/dev/ixgbe/ixgbe_phy.c
+++ b/sys/dev/ixgbe/ixgbe_phy.c
@@ -1892,6 +1892,11 @@ s32 ixgbe_get_sfp_init_sequence_offsets(struct ixgbe_hw *hw,
 	    (hw->phy.sfp_type == ixgbe_sfp_type_da_cu))
 		return IXGBE_ERR_SFP_NOT_SUPPORTED;
 
+	/* XXX: hack for 10G-SR support on 0x10F1 cards */
+	if ((hw->device_id == IXGBE_DEV_ID_82598_DA_DUAL_PORT) &&
+	    (hw->phy.sfp_type == ixgbe_sfp_type_sr))
+		sfp_type = ixgbe_sfp_type_da_cu;
+
 	/*
 	 * Limiting active cables and 1G Phys must be initialized as
 	 * SR modules