kernel-interface: Not all kernel interfaces support SPIs on policies

diff --git a/src/libcharon/kernel/kernel_interface.h b/src/libcharon/kernel/kernel_interface.h
index d601ebd4ebdbf84a22fec426694ab0342bc1438e..f4f55adfebfcf2a0d82da45eac47ef76de0b0fce 100644 (file)
--- a/src/libcharon/kernel/kernel_interface.h
+++ b/src/libcharon/kernel/kernel_interface.h
@@ -77,6 +77,8 @@ enum kernel_feature_t {
        KERNEL_REQUIRE_UDP_ENCAPSULATION = (1<<2),
        /** IPsec backend does not require a policy reinstall on SA updates */
        KERNEL_NO_POLICY_UPDATES = (1<<3),
+       /** IPsec backend supports installing SPIs on policies */
+       KERNEL_POLICY_SPI = (1<<4),
 };
 
 /**