[TCP]: Do not present confusing congestion control options by default. (a6484045) · Commits · 戴 / test

Create TCP_CONG_ADVANCED option, akin to IP_ADVANCED_ROUTER, which when disabled will bypass all of the congestion control Kconfig options and leave the user with a safe default. That safe default is currently BIC-TCP with new Reno as a fallback. Signed-off-by:

David S. Miller <davem@davemloft.net>

net/ipv4/Kconfig

+19 −1

Original line number	Diff line number	Diff line
		@@ -445,9 +445,22 @@ config IP_TCPDIAG
		config IP_TCPDIAG_IPV6
		def_bool (IP_TCPDIAG=y && IPV6=y) \|\| (IP_TCPDIAG=m && IPV6)

		config TCP_CONG_ADVANCED
		bool "TCP: advanced congestion control"
		depends on INET
		default y
		---help---
		Support for selection of various TCP congestion control
		modules.

		Nearly all users can safely say no here, and a safe default
		selection will be made (BIC-TCP with new Reno as a fallback).

		If unsure, say N.

		# TCP Reno is builtin (required as fallback)
		menu "TCP congestion control"
		depends on INET
		depends on TCP_CONG_ADVANCED

		config TCP_CONG_BIC
		tristate "Binary Increase Congestion (BIC) control"
		@@ -535,5 +548,10 @@ config TCP_CONG_SCALABLE

		endmenu

		config TCP_CONG_BIC
		boolean
		depends on !TCP_CONG_ADVANCED
		default y

		source "net/ipv4/ipvs/Kconfig"

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