1 /* SPDX-License-Identifier: BSD-3-Clause */ 2 /* Copyright (c) 2021, Intel Corporation 3 * All rights reserved. 4 * 5 * Redistribution and use in source and binary forms, with or without 6 * modification, are permitted provided that the following conditions are met: 7 * 8 * 1. Redistributions of source code must retain the above copyright notice, 9 * this list of conditions and the following disclaimer. 10 * 11 * 2. Redistributions in binary form must reproduce the above copyright 12 * notice, this list of conditions and the following disclaimer in the 13 * documentation and/or other materials provided with the distribution. 14 * 15 * 3. Neither the name of the Intel Corporation nor the names of its 16 * contributors may be used to endorse or promote products derived from 17 * this software without specific prior written permission. 18 * 19 * THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS" 20 * AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE 21 * IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE 22 * ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE 23 * LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR 24 * CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF 25 * SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS 26 * INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN 27 * CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE) 28 * ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE 29 * POSSIBILITY OF SUCH DAMAGE. 30 */ 31 /*$FreeBSD$*/ 32 33 /** 34 * @file ice_common_sysctls.h 35 * @brief driver wide sysctls not related to the iflib stack 36 * 37 * Contains static sysctl values which are driver wide and configure all 38 * devices of the driver at once. 39 * 40 * Device specific sysctls are setup by functions in ice_lib.c 41 */ 42 43 #ifndef _ICE_COMMON_SYSCTLS_H_ 44 #define _ICE_COMMON_SYSCTLS_H_ 45 46 #include <sys/sysctl.h> 47 48 /** 49 * @var ice_enable_tx_fc_filter 50 * @brief boolean indicating if the Tx Flow Control filter should be enabled 51 * 52 * Global sysctl variable indicating whether the Tx Flow Control filters 53 * should be enabled. If true, Ethertype 0x8808 packets will be dropped if 54 * they come from non-HW sources. If false, packets coming from software will 55 * not be dropped. Leave this on if unless you must send flow control frames 56 * (or other control frames) from software. 57 * 58 * @remark each PF has a separate sysctl which can override this value. 59 */ 60 bool ice_enable_tx_fc_filter = true; 61 62 /** 63 * @var ice_enable_tx_lldp_filter 64 * @brief boolean indicating if the Tx LLDP filter should be enabled 65 * 66 * Global sysctl variable indicating whether the Tx Flow Control filters 67 * should be enabled. If true, Ethertype 0x88cc packets will be dropped if 68 * they come from non-HW sources. If false, packets coming from software will 69 * not be dropped. Leave this on if unless you must send LLDP frames from 70 * software. 71 * 72 * @remark each PF has a separate sysctl which can override this value. 73 */ 74 bool ice_enable_tx_lldp_filter = true; 75 76 /* sysctls marked as tunable, (i.e. with the CTLFLAG_TUN set) will 77 * automatically load tunable values, without the need to manually create the 78 * TUNABLE definition. 79 * 80 * This works since at least FreeBSD 11, and was backported into FreeBSD 10 81 * before the FreeBSD 10.1-RELEASE. 82 * 83 * If the tunable needs a custom loader, mark the SYSCTL as CTLFLAG_NOFETCH, 84 * and create the tunable manually. 85 */ 86 87 static SYSCTL_NODE(_hw, OID_AUTO, ice, CTLFLAG_RD, 0, "ICE driver parameters"); 88 89 static SYSCTL_NODE(_hw_ice, OID_AUTO, debug, ICE_CTLFLAG_DEBUG | CTLFLAG_RD, 0, 90 "ICE driver debug parameters"); 91 92 SYSCTL_BOOL(_hw_ice_debug, OID_AUTO, enable_tx_fc_filter, CTLFLAG_RDTUN, 93 &ice_enable_tx_fc_filter, 0, 94 "Drop Ethertype 0x8808 control frames originating from non-HW sources"); 95 96 SYSCTL_BOOL(_hw_ice_debug, OID_AUTO, enable_tx_lldp_filter, CTLFLAG_RDTUN, 97 &ice_enable_tx_lldp_filter, 0, 98 "Drop Ethertype 0x88cc LLDP frames originating from non-HW sources"); 99 100 #endif /* _ICE_COMMON_SYSCTLS_H_ */ 101