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diff --git a/sys/dev/ice/ice_common_sysctls.h b/sys/dev/ice/ice_common_sysctls.h
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+/* SPDX-License-Identifier: BSD-3-Clause */
+/*  Copyright (c) 2024, Intel Corporation
+ *  All rights reserved.
+ *
+ *  Redistribution and use in source and binary forms, with or without
+ *  modification, are permitted provided that the following conditions are met:
+ *
+ *   1. Redistributions of source code must retain the above copyright notice,
+ *      this list of conditions and the following disclaimer.
+ *
+ *   2. Redistributions in binary form must reproduce the above copyright
+ *      notice, this list of conditions and the following disclaimer in the
+ *      documentation and/or other materials provided with the distribution.
+ *
+ *   3. Neither the name of the Intel Corporation nor the names of its
+ *      contributors may be used to endorse or promote products derived from
+ *      this software without specific prior written permission.
+ *
+ *  THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
+ *  AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
+ *  IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
+ *  ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
+ *  LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
+ *  CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
+ *  SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
+ *  INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
+ *  CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
+ *  ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
+ *  POSSIBILITY OF SUCH DAMAGE.
+ */
+
+/**
+ * @file ice_common_sysctls.h
+ * @brief driver wide sysctls not related to the iflib stack
+ *
+ * Contains static sysctl values which are driver wide and configure all
+ * devices of the driver at once.
+ *
+ * Device specific sysctls are setup by functions in ice_lib.c
+ */
+
+#ifndef _ICE_COMMON_SYSCTLS_H_
+#define _ICE_COMMON_SYSCTLS_H_
+
+#include <sys/sysctl.h>
+
+/**
+ * @var ice_enable_irdma
+ * @brief boolean indicating if the iRDMA client interface is enabled
+ *
+ * Global sysctl variable indicating whether the RDMA client interface feature
+ * is enabled.
+ */
+bool ice_enable_irdma = true;
+
+/**
+ * @var ice_enable_tx_fc_filter
+ * @brief boolean indicating if the Tx Flow Control filter should be enabled
+ *
+ * Global sysctl variable indicating whether the Tx Flow Control filters
+ * should be enabled. If true, Ethertype 0x8808 packets will be dropped if
+ * they come from non-HW sources. If false, packets coming from software will
+ * not be dropped. Leave this on if unless you must send flow control frames
+ * (or other control frames) from software.
+ *
+ * @remark each PF has a separate sysctl which can override this value.
+ */
+bool ice_enable_tx_fc_filter = true;
+
+/**
+ * @var ice_enable_tx_lldp_filter
+ * @brief boolean indicating if the Tx LLDP filter should be enabled
+ *
+ * Global sysctl variable indicating whether the Tx Flow Control filters
+ * should be enabled. If true, Ethertype 0x88cc packets will be dropped if
+ * they come from non-HW sources. If false, packets coming from software will
+ * not be dropped. Leave this on if unless you must send LLDP frames from
+ * software.
+ *
+ * @remark each PF has a separate sysctl which can override this value.
+ */
+bool ice_enable_tx_lldp_filter = true;
+
+/**
+ * @var ice_enable_health_events
+ * @brief boolean indicating if health status events from the FW should be reported
+ *
+ * Global sysctl variable indicating whether the Health Status events from the
+ * FW should be enabled. If true, if an event occurs, the driver will print out
+ * a message with a description of the event and possible actions to take.
+ *
+ * @remark each PF has a separate sysctl which can override this value.
+ */
+bool ice_enable_health_events = true;
+
+/**
+ * @var ice_tx_balance_en
+ * @brief boolean permitting the 5-layer scheduler topology enablement
+ *
+ * Global sysctl variable indicating whether the driver will allow the
+ * 5-layer scheduler topology feature to be enabled. It's _not_
+ * specifically enabling the feature, just allowing it depending on what
+ * the DDP package allows.
+ */
+bool ice_tx_balance_en = true;
+
+/**
+ * @var ice_rdma_max_msix
+ * @brief maximum number of MSI-X vectors to reserve for RDMA interface
+ *
+ * Global sysctl variable indicating the maximum number of MSI-X vectors to
+ * reserve for a single RDMA interface.
+ */
+static uint16_t ice_rdma_max_msix = ICE_RDMA_MAX_MSIX;
+
+/* sysctls marked as tunable, (i.e. with the CTLFLAG_TUN set) will
+ * automatically load tunable values, without the need to manually create the
+ * TUNABLE definition.
+ *
+ * This works since at least FreeBSD 11, and was backported into FreeBSD 10
+ * before the FreeBSD 10.1-RELEASE.
+ *
+ * If the tunable needs a custom loader, mark the SYSCTL as CTLFLAG_NOFETCH,
+ * and create the tunable manually.
+ */
+
+static SYSCTL_NODE(_hw, OID_AUTO, ice, CTLFLAG_RD, 0, "ICE driver parameters");
+
+static SYSCTL_NODE(_hw_ice, OID_AUTO, debug, ICE_CTLFLAG_DEBUG | CTLFLAG_RD, 0,
+		   "ICE driver debug parameters");
+
+SYSCTL_BOOL(_hw_ice, OID_AUTO, enable_health_events, CTLFLAG_RDTUN,
+	    &ice_enable_health_events, 0,
+	    "Enable FW health event reporting globally");
+
+SYSCTL_BOOL(_hw_ice, OID_AUTO, irdma, CTLFLAG_RDTUN, &ice_enable_irdma, 0,
+	    "Enable iRDMA client interface");
+
+SYSCTL_U16(_hw_ice, OID_AUTO, rdma_max_msix, CTLFLAG_RDTUN, &ice_rdma_max_msix,
+	   0, "Maximum number of MSI-X vectors to reserve per RDMA interface");
+
+SYSCTL_BOOL(_hw_ice_debug, OID_AUTO, enable_tx_fc_filter, CTLFLAG_RDTUN,
+	    &ice_enable_tx_fc_filter, 0,
+	    "Drop Ethertype 0x8808 control frames originating from non-HW sources");
+
+SYSCTL_BOOL(_hw_ice_debug, OID_AUTO, enable_tx_lldp_filter, CTLFLAG_RDTUN,
+	    &ice_enable_tx_lldp_filter, 0,
+	    "Drop Ethertype 0x88cc LLDP frames originating from non-HW sources");
+
+SYSCTL_BOOL(_hw_ice_debug, OID_AUTO, tx_balance_en, CTLFLAG_RWTUN,
+	    &ice_tx_balance_en, 0,
+	    "Enable 5-layer scheduler topology");
+
+#endif /* _ICE_COMMON_SYSCTLS_H_ */