Differential D21959 Diff 72090 sys/dev/ice/ice_common_sysctls.h

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sys/dev/ice/ice_common_sysctls.h

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				/* SPDX-License-Identifier: BSD-3-Clause */
				/* Copyright (c) 2020, Intel Corporation
				* All rights reserved.
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				* 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
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				* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
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				/$FreeBSD$/

				/**
				* @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_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;

				/* 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_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");

				#endif /* _ICE_COMMON_SYSCTLS_H_ */