[openwrt/openwrt] kernel: crypto: add kmod-crypto-chacha20poly1305

[LEDE Commits]

stintel pushed a commit to openwrt/openwrt.git, branch openwrt-22.03:
https://git.openwrt.org/3cfe050c4a683ecef25d6ded05b1d240921a121a

commit 3cfe050c4a683ecef25d6ded05b1d240921a121a
Author: Xu Wang <xwang1498 at gmx.com>
AuthorDate: Fri May 27 22:21:43 2022 +0000

    kernel: crypto: add kmod-crypto-chacha20poly1305
    
    Needed by strongSwan IPsec VPN for strongswan-mod-chapoly. Not to be confused with
    kmod-crypto-LIB-chacha20poly1305, which is an 8-byte nonce version used
    by wireguard.
    
    Signed-off-by: Xu Wang <xwang1498 at gmx.com>
    (cherry picked from commit 197b672c40613a53a78a568a1957f2c23c343c1f)
---
 package/kernel/linux/modules/crypto.mk | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/package/kernel/linux/modules/crypto.mk b/package/kernel/linux/modules/crypto.mk
index 445b2e353b..2b0388aa10 100644
--- a/package/kernel/linux/modules/crypto.mk
+++ b/package/kernel/linux/modules/crypto.mk
@@ -101,6 +101,18 @@ endef
 $(eval $(call KernelPackage,crypto-ccm))
 
 
+define KernelPackage/crypto-chacha20poly1305
+  TITLE:=ChaCha20-Poly1305 AEAD support, RFC7539 (used by strongSwan IPsec VPN)
+  DEPENDS:=+kmod-crypto-aead +kmod-crypto-manager
+  KCONFIG:=CONFIG_CRYPTO_CHACHA20POLY1305
+  FILES:=$(LINUX_DIR)/crypto/chacha20poly1305.ko
+  AUTOLOAD:=$(call AutoLoad,09,chacha20poly1305)
+  $(call AddDepends/crypto)
+endef
+
+$(eval $(call KernelPackage,crypto-chacha20poly1305))
+
+
 define KernelPackage/crypto-cmac
   TITLE:=Support for Cipher-based Message Authentication Code (CMAC)
   DEPENDS:=+kmod-crypto-hash