xref: /freebsd/sys/dev/ice/ice_common_sysctls.h (revision 924226fba12cc9a228c73b956e1b7fa24c60b055)
1 /* SPDX-License-Identifier: BSD-3-Clause */
2 /*  Copyright (c) 2021, Intel Corporation
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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_irdma
50  * @brief boolean indicating if the iRDMA client interface is enabled
51  *
52  * Global sysctl variable indicating whether the RDMA client interface feature
53  * is enabled.
54  */
55 bool ice_enable_irdma = true;
56 
57 /**
58  * @var ice_enable_tx_fc_filter
59  * @brief boolean indicating if the Tx Flow Control filter should be enabled
60  *
61  * Global sysctl variable indicating whether the Tx Flow Control filters
62  * should be enabled. If true, Ethertype 0x8808 packets will be dropped if
63  * they come from non-HW sources. If false, packets coming from software will
64  * not be dropped. Leave this on if unless you must send flow control frames
65  * (or other control frames) from software.
66  *
67  * @remark each PF has a separate sysctl which can override this value.
68  */
69 bool ice_enable_tx_fc_filter = true;
70 
71 /**
72  * @var ice_enable_tx_lldp_filter
73  * @brief boolean indicating if the Tx LLDP filter should be enabled
74  *
75  * Global sysctl variable indicating whether the Tx Flow Control filters
76  * should be enabled. If true, Ethertype 0x88cc packets will be dropped if
77  * they come from non-HW sources. If false, packets coming from software will
78  * not be dropped. Leave this on if unless you must send LLDP frames from
79  * software.
80  *
81  * @remark each PF has a separate sysctl which can override this value.
82  */
83 bool ice_enable_tx_lldp_filter = true;
84 
85 /**
86  * @var ice_enable_health_events
87  * @brief boolean indicating if health status events from the FW should be reported
88  *
89  * Global sysctl variable indicating whether the Health Status events from the
90  * FW should be enabled. If true, if an event occurs, the driver will print out
91  * a message with a description of the event and possible actions to take.
92  *
93  * @remark each PF has a separate sysctl which can override this value.
94  */
95 bool ice_enable_health_events = true;
96 
97 /**
98  * @var ice_rdma_max_msix
99  * @brief maximum number of MSI-X vectors to reserve for RDMA interface
100  *
101  * Global sysctl variable indicating the maximum number of MSI-X vectors to
102  * reserve for a single RDMA interface.
103  */
104 static uint16_t ice_rdma_max_msix = ICE_RDMA_MAX_MSIX;
105 
106 /* sysctls marked as tunable, (i.e. with the CTLFLAG_TUN set) will
107  * automatically load tunable values, without the need to manually create the
108  * TUNABLE definition.
109  *
110  * This works since at least FreeBSD 11, and was backported into FreeBSD 10
111  * before the FreeBSD 10.1-RELEASE.
112  *
113  * If the tunable needs a custom loader, mark the SYSCTL as CTLFLAG_NOFETCH,
114  * and create the tunable manually.
115  */
116 
117 static SYSCTL_NODE(_hw, OID_AUTO, ice, CTLFLAG_RD, 0, "ICE driver parameters");
118 
119 static SYSCTL_NODE(_hw_ice, OID_AUTO, debug, ICE_CTLFLAG_DEBUG | CTLFLAG_RD, 0,
120 		   "ICE driver debug parameters");
121 
122 SYSCTL_BOOL(_hw_ice, OID_AUTO, enable_health_events, CTLFLAG_RDTUN,
123 	    &ice_enable_health_events, 0,
124 	    "Enable FW health event reporting globally");
125 
126 SYSCTL_BOOL(_hw_ice, OID_AUTO, irdma, CTLFLAG_RDTUN, &ice_enable_irdma, 0,
127 	    "Enable iRDMA client interface");
128 
129 SYSCTL_U16(_hw_ice, OID_AUTO, rdma_max_msix, CTLFLAG_RDTUN, &ice_rdma_max_msix,
130 	   0, "Maximum number of MSI-X vectors to reserve per RDMA interface");
131 
132 SYSCTL_BOOL(_hw_ice_debug, OID_AUTO, enable_tx_fc_filter, CTLFLAG_RDTUN,
133 	    &ice_enable_tx_fc_filter, 0,
134 	    "Drop Ethertype 0x8808 control frames originating from non-HW sources");
135 
136 SYSCTL_BOOL(_hw_ice_debug, OID_AUTO, enable_tx_lldp_filter, CTLFLAG_RDTUN,
137 	    &ice_enable_tx_lldp_filter, 0,
138 	    "Drop Ethertype 0x88cc LLDP frames originating from non-HW sources");
139 
140 #endif /* _ICE_COMMON_SYSCTLS_H_ */
141