1 /* SPDX-License-Identifier: BSD-3-Clause */
2 /* Copyright (c) 2020, Intel Corporation
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34 * @file ice_common_sysctls.h
35 * @brief driver wide sysctls not related to the iflib stack
37 * Contains static sysctl values which are driver wide and configure all
38 * devices of the driver at once.
40 * Device specific sysctls are setup by functions in ice_lib.c
43 #ifndef _ICE_COMMON_SYSCTLS_H_
44 #define _ICE_COMMON_SYSCTLS_H_
46 #include <sys/sysctl.h>
49 * @var ice_enable_tx_fc_filter
50 * @brief boolean indicating if the Tx Flow Control filter should be enabled
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.
58 * @remark each PF has a separate sysctl which can override this value.
60 bool ice_enable_tx_fc_filter = true;
63 * @var ice_enable_tx_lldp_filter
64 * @brief boolean indicating if the Tx LLDP filter should be enabled
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
72 * @remark each PF has a separate sysctl which can override this value.
74 bool ice_enable_tx_lldp_filter = true;
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
80 * This works since at least FreeBSD 11, and was backported into FreeBSD 10
81 * before the FreeBSD 10.1-RELEASE.
83 * If the tunable needs a custom loader, mark the SYSCTL as CTLFLAG_NOFETCH,
84 * and create the tunable manually.
87 static SYSCTL_NODE(_hw, OID_AUTO, ice, CTLFLAG_RD, 0, "ICE driver parameters");
89 static SYSCTL_NODE(_hw_ice, OID_AUTO, debug, ICE_CTLFLAG_DEBUG | CTLFLAG_RD, 0,
90 "ICE driver debug parameters");
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");
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");
100 #endif /* _ICE_COMMON_SYSCTLS_H_ */