netdev - [PATCH net-next v2] net: allow rps/rfs related configs to be switched

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Date: Wed,  5 Jun 2024 10:29:32 +0800
From: Jason Xing <kerneljasonxing@...il.com>
To: edumazet@...gle.com,
	kuba@...nel.org,
	pabeni@...hat.com,
	horms@...nel.org,
	davem@...emloft.net,
	dsahern@...nel.org
Cc: netdev@...r.kernel.org,
	kerneljasonxing@...il.com,
	Jason Xing <kernelxing@...cent.com>
Subject: [PATCH net-next v2] net: allow rps/rfs related configs to be switched

From: Jason Xing <kernelxing@...cent.com>

After John Sperbeck reported a compile error if the CONFIG_RFS_ACCEL
is off, I found that I cannot easily enable/disable the config
because of lack of the prompt when using 'make menuconfig'. Therefore,
I decided to change rps/rfc related configs altogether.

Signed-off-by: Jason Xing <kernelxing@...cent.com>
---
v2
Link: https://lore.kernel.org/all/20240531164440.13292-1-kerneljasonxing@gmail.com/
1. add 'help' and remove 'drop' from prompt (Simon)
---
 net/Kconfig | 12 +++++++++---
 1 file changed, 9 insertions(+), 3 deletions(-)

diff --git a/net/Kconfig b/net/Kconfig
index f0a8692496ff..9fe65fa26e48 100644
--- a/net/Kconfig
+++ b/net/Kconfig
@@ -290,15 +290,21 @@ config MAX_SKB_FRAGS
 	  If unsure, say 17.
 
 config RPS
-	bool
+	bool "Receive packet steering"
 	depends on SMP && SYSFS
 	default y
+	help
+	  Software receive side packet steering (RPS) distributes the
+	  load of received packet processing across multiple CPUs.
 
 config RFS_ACCEL
-	bool
+	bool "Hardware acceleration of RFS"
 	depends on RPS
 	select CPU_RMAP
 	default y
+	help
+	  Allowing drivers for multiqueue hardware with flow filter tables to
+	  accelerate RFS.
 
 config SOCK_RX_QUEUE_MAPPING
 	bool
@@ -351,7 +357,7 @@ config BPF_STREAM_PARSER
 	  BPF_MAP_TYPE_SOCKMAP.
 
 config NET_FLOW_LIMIT
-	bool
+	bool "Net flow limit"
 	depends on RPS
 	default y
 	help
-- 
2.37.3