linux-support 0.0.25

Comprehensive Linux support for namespaces, cgroups, processes, scheduling, parsing /proc, parsing /sys, signals, hyper threads, CPUS, NUMA nodes, unusual file descriptors, PCI devices and much, much more
1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68

// This file is part of linux-support. It is subject to the license terms in the COPYRIGHT file found in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/linux-support/master/COPYRIGHT. No part of linux-support, including this file, may be copied, modified, propagated, or distributed except according to the terms contained in the COPYRIGHT file.
// Copyright © 2020 The developers of linux-support. See the COPYRIGHT file in the top-level directory of this distribution and at https://raw.githubusercontent.com/lemonrock/linux-support/master/COPYRIGHT.


#[allow(missing_docs)]
#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash)]
#[derive(Deserialize, Serialize)]
#[serde(default, deny_unknown_fields)]
pub struct DevicePreferences
{
	/// Used by the `pfifo_fast` transmit queuing discipline (QDisc).
	pub transmission_queue_length: Option<u32>,
	
	/// Change queue depths.
	pub queue_depths: SetToSpecificValueOrMaximize<(QueueDepth, QueueDepth)>,
	
	pub generic_receive_offload_flush_timeout_in_nanoseconds: u32,
	
	pub counter_to_decrement_before_processing_hard_interrupt_requests: Option<NonZeroU32>,
	
	pub receive_coalescing_preference: ReceiveCoalescingPreference,
	
	pub transmit_coalescing_preference: TransmitCoalescingPreference,

	/// Zero is possible but very silly.
	///
	/// A value such as 2048 is more sensible.
	///
	/// Effectively matches the number of active (as opposed to open) network sockets.
	pub receive_flow_steering_table_count_per_queue: usize,
}

impl Default for DevicePreferences
{
	fn default() -> Self
	{
		Self
		{
			transmission_queue_length: Some(1000),
			
			queue_depths: SetToSpecificValueOrMaximize::Maximize,
			
			generic_receive_offload_flush_timeout_in_nanoseconds: 0,
			
			counter_to_decrement_before_processing_hard_interrupt_requests: None,
			
			receive_coalescing_preference: ReceiveCoalescingPreference
			{
				preferred_micoseconds_interval: 0,
				
				interrupt_throttle_rate_setting: IntelIxgbevfInterruptThrottleRateSetting::Dynamic,
			
				prefer_adaptive_coalescing: true,
			},
			
			transmit_coalescing_preference: TransmitCoalescingPreference
			{
				preferred_micoseconds_interval: 64,
				
				interrupt_throttle_rate_setting: IntelIxgbevfInterruptThrottleRateSetting::Dynamic,
				
				enable_napi_weight: true,
			},
			
			receive_flow_steering_table_count_per_queue: 2048,
		}
	}
}