netdev - [PATCH ipsec-next v14 01/15] xfrm: config: add CONFIG_XFRM

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Message-ID: <20241114070713.3718740-2-chopps@chopps.org>
Date: Thu, 14 Nov 2024 02:06:58 -0500
From: Christian Hopps <chopps@...pps.org>
To: devel@...ux-ipsec.org
Cc: Steffen Klassert <steffen.klassert@...unet.com>,
	netdev@...r.kernel.org,
	Florian Westphal <fw@...len.de>,
	Sabrina Dubroca <sd@...asysnail.net>,
	Simon Horman <horms@...nel.org>,
	Antony Antony <antony@...nome.org>,
	Christian Hopps <chopps@...pps.org>,
	Christian Hopps <chopps@...n.net>
Subject: [PATCH ipsec-next v14 01/15] xfrm: config: add CONFIG_XFRM_IPTFS

From: Christian Hopps <chopps@...n.net>

Add new Kconfig option to enable IP-TFS (RFC9347) functionality.

Signed-off-by: Christian Hopps <chopps@...n.net>
---
 net/xfrm/Kconfig | 16 ++++++++++++++++
 1 file changed, 16 insertions(+)

diff --git a/net/xfrm/Kconfig b/net/xfrm/Kconfig
index d7b16f2c23e9..f0157702718f 100644
--- a/net/xfrm/Kconfig
+++ b/net/xfrm/Kconfig
@@ -135,6 +135,22 @@ config NET_KEY_MIGRATE
 
 	  If unsure, say N.
 
+config XFRM_IPTFS
+	tristate "IPsec IP-TFS/AGGFRAG (RFC 9347) encapsulation support"
+	depends on XFRM
+	help
+	  Information on the IP-TFS/AGGFRAG encapsulation can be found
+	  in RFC 9347. This feature supports demand driven (i.e.,
+	  non-constant send rate) IP-TFS to take advantage of the
+	  AGGFRAG ESP payload encapsulation. This payload type
+	  supports aggregation and fragmentation of the inner IP
+	  packet stream which in turn yields higher small-packet
+	  bandwidth as well as reducing MTU/PMTU issues. Congestion
+	  control is unimplementated as the send rate is demand driven
+	  rather than constant.
+
+	  If unsure, say N.
+
 config XFRM_ESPINTCP
 	bool
 
-- 
2.47.0