[openwrt/openwrt] kernel: remove handling of xfrm[4|6]_mode_* modules

[LEDE Commits]

hauke pushed a commit to openwrt/openwrt.git, branch openwrt-22.03:
https://git.openwrt.org/6e396eff1a14a8ed1a1033abec8132989ba7c742

commit 6e396eff1a14a8ed1a1033abec8132989ba7c742
Author: Martin Schiller <ms at dev.tdt.de>
AuthorDate: Wed Oct 19 11:21:58 2022 +0200

    kernel: remove handling of xfrm[4|6]_mode_* modules
    
    For kernel versions before 5.2, the required IPsec modes have to be
    enabled explicitly (they are built-in for newer kernels).
    
    Commit 1556ed155a9a ("kernel: mode_beet mode_transport mode_tunnel xfram
    modules") tried to handle this, but it does not really work.
    
    Since we don't support these kernel versions anymore and the code is
    also broken, let's remove it.
    
    Signed-off-by: Martin Schiller <ms at dev.tdt.de>
    [Remove old generic config options too]
    Signed-off-by: Hauke Mehrtens <hauke at hauke-m.de>
    (cherry picked from commit da5c45f4d8864a82378b4a04c0516cb98a718cfa)
---
 package/kernel/linux/modules/netsupport.mk | 14 ++------------
 target/linux/generic/config-5.10           |  3 ---
 2 files changed, 2 insertions(+), 15 deletions(-)

diff --git a/package/kernel/linux/modules/netsupport.mk b/package/kernel/linux/modules/netsupport.mk
index 53e21c0e9f..d24650e1b7 100644
--- a/package/kernel/linux/modules/netsupport.mk
+++ b/package/kernel/linux/modules/netsupport.mk
@@ -215,10 +215,8 @@ $(eval $(call KernelPackage,ipsec))
 IPSEC4-m = \
 	ipv4/ah4 \
 	ipv4/esp4 \
-	ipv4/xfrm4_tunnel \
 	ipv4/ipcomp \
-
-IPSEC4-m += $(ifeq ($$(strip $$(call CompareKernelPatchVer,$$(KERNEL_PATCHVER),le,5.2))),ipv4/xfrm4_mode_beet ipv4/xfrm4_mode_transport ipv4/xfrm4_mode_tunnel)
+	ipv4/xfrm4_tunnel
 
 define KernelPackage/ipsec4
   SUBMENU:=$(NETWORK_SUPPORT_MENU)
@@ -228,9 +226,6 @@ define KernelPackage/ipsec4
 	CONFIG_INET_AH \
 	CONFIG_INET_ESP \
 	CONFIG_INET_IPCOMP \
-	CONFIG_INET_XFRM_MODE_BEET \
-	CONFIG_INET_XFRM_MODE_TRANSPORT \
-	CONFIG_INET_XFRM_MODE_TUNNEL \
 	CONFIG_INET_XFRM_TUNNEL \
 	CONFIG_INET_ESP_OFFLOAD=n
   FILES:=$(foreach mod,$(IPSEC4-m),$(LINUX_DIR)/net/$(mod).ko)
@@ -255,10 +250,8 @@ $(eval $(call KernelPackage,ipsec4))
 IPSEC6-m = \
 	ipv6/ah6 \
 	ipv6/esp6 \
-	ipv6/xfrm6_tunnel \
 	ipv6/ipcomp6 \
-
-IPSEC6-m += $(ifeq ($$(strip $$(call CompareKernelPatchVer,$$(KERNEL_PATCHVER),le,5.2))),ipv6/xfrm6_mode_beet ipv6/xfrm6_mode_transport ipv6/xfrm6_mode_tunnel)
+	ipv6/xfrm6_tunnel
 
 define KernelPackage/ipsec6
   SUBMENU:=$(NETWORK_SUPPORT_MENU)
@@ -268,9 +261,6 @@ define KernelPackage/ipsec6
 	CONFIG_INET6_AH \
 	CONFIG_INET6_ESP \
 	CONFIG_INET6_IPCOMP \
-	CONFIG_INET6_XFRM_MODE_BEET \
-	CONFIG_INET6_XFRM_MODE_TRANSPORT \
-	CONFIG_INET6_XFRM_MODE_TUNNEL \
 	CONFIG_INET6_XFRM_TUNNEL \
 	CONFIG_INET6_ESP_OFFLOAD=n
   FILES:=$(foreach mod,$(IPSEC6-m),$(LINUX_DIR)/net/$(mod).ko)
diff --git a/target/linux/generic/config-5.10 b/target/linux/generic/config-5.10
index 05094ba85c..5d88a501db 100644
--- a/target/linux/generic/config-5.10
+++ b/target/linux/generic/config-5.10
@@ -2551,9 +2551,6 @@ CONFIG_INET=y
 # CONFIG_INET_TCP_DIAG is not set
 # CONFIG_INET_TUNNEL is not set
 # CONFIG_INET_UDP_DIAG is not set
-# CONFIG_INET_XFRM_MODE_BEET is not set
-# CONFIG_INET_XFRM_MODE_TRANSPORT is not set
-# CONFIG_INET_XFRM_MODE_TUNNEL is not set
 # CONFIG_INET_XFRM_TUNNEL is not set
 # CONFIG_INFINIBAND is not set
 # CONFIG_INFTL is not set