1 # SPDX-License-Identifier: GPL-2.0-only <<
2 config DCB 1 config DCB
3 bool "Data Center Bridging support" 2 bool "Data Center Bridging support"
4 default n 3 default n
5 help !! 4 ---help---
6 This enables support for configuring 5 This enables support for configuring Data Center Bridging (DCB)
7 features on DCB capable Ethernet ada 6 features on DCB capable Ethernet adapters via rtnetlink. Say 'Y'
8 if you have a DCB capable Ethernet a 7 if you have a DCB capable Ethernet adapter which supports this
9 interface and you are connected to a 8 interface and you are connected to a DCB capable switch.
10 9
11 DCB is a collection of Ethernet enha 10 DCB is a collection of Ethernet enhancements which allow DCB capable
12 NICs and switches to support network 11 NICs and switches to support network traffic with differing
13 requirements (highly reliable, no dr 12 requirements (highly reliable, no drops vs. best effort vs. low
14 latency) to co-exist on Ethernet. 13 latency) to co-exist on Ethernet.
15 14
16 DCB features include: 15 DCB features include:
17 Enhanced Transmission Selection (a 16 Enhanced Transmission Selection (aka Priority Grouping) - provides a
18 framework for assigning bandwidt 17 framework for assigning bandwidth guarantees to traffic classes.
19 Priority-based Flow Control (PFC) 18 Priority-based Flow Control (PFC) - a MAC control pause frame which
20 works at the granularity of the 19 works at the granularity of the 802.1p priority instead of the
21 link (802.3x). 20 link (802.3x).
22 21
23 If unsure, say N. 22 If unsure, say N.
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