xfrm: make xfrm_algo.c a module

By making this a standalone config option (auto-selected as needed),
selecting CRYPTO from here rather than from XFRM (which is boolean)
allows the core crypto code to become a module again even when XFRM=y.

Signed-off-by: Jan Beulich <jbeulich@suse.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

1 files changed, 9 insertions, 4 deletions

diff --git a/net/xfrm/Kconfig b/net/xfrm/Kconfig
index 6d081674515..ce90b8d9236 100644
--- a/net/xfrm/Kconfig
+++ b/net/xfrm/Kconfig
@@ -3,12 +3,17 @@
 #
 config XFRM
        bool
-       select CRYPTO
        depends on NET
 
+config XFRM_ALGO
+        tristate
+        select XFRM
+        select CRYPTO
+
 config XFRM_USER
         tristate "Transformation user configuration interface"
-        depends on INET && XFRM
+        depends on INET
+        select XFRM_ALGO
         ---help---
           Support for Transformation(XFRM) user configuration interface
           like IPsec used by native Linux tools.
@@ -48,13 +53,13 @@ config XFRM_STATISTICS
 
 config XFRM_IPCOMP
         tristate
-        select XFRM
+        select XFRM_ALGO
         select CRYPTO
         select CRYPTO_DEFLATE
 
 config NET_KEY
         tristate "PF_KEY sockets"
-        select XFRM
+        select XFRM_ALGO
         ---help---
           PF_KEYv2 socket family, compatible to KAME ones.
           They are required if you are going to use IPsec tools ported