strongswan-swanctl: adapt options to strongswan-5.7.1

The changes were found by executing the following in the strongswan
repo (https://github.com/strongswan/strongswan):

git diff 5.6.3..5.7.1 src/swanctl/swanctl.opt

1 files changed, 83 insertions, 0 deletions

diff --git a/nixos/modules/services/networking/strongswan-swanctl/swanctl-params.nix b/nixos/modules/services/networking/strongswan-swanctl/swanctl-params.nix
index b16d299917fe..d4f7e95f859f 100644
--- a/nixos/modules/services/networking/strongswan-swanctl/swanctl-params.nix
+++ b/nixos/modules/services/networking/strongswan-swanctl/swanctl-params.nix
@@ -248,6 +248,14 @@ in {
       </itemizedlist>
     '';
 
+    ppk_id = mkOptionalStrParam ''
+       String identifying the Postquantum Preshared Key (PPK) to be used.
+    '';
+
+    ppk_required = mkYesNoParam no ''
+       Whether a Postquantum Preshared Key (PPK) is required for this connection.
+    '';
+
     keyingtries = mkIntParam 1 ''
       Number of retransmission sequences to perform during initial
       connect. Instead of giving up initiation after the first retransmission
@@ -922,6 +930,36 @@ in {
         <literal>0xffffffff</literal>.
       '';
 
+      set_mark_in = mkStrParam "0/0x00000000" ''
+        Netfilter mark applied to packets after the inbound IPsec SA processed
+        them. This way it's not necessary to mark packets via Netfilter before
+        decryption or right afterwards to match policies or process them
+        differently (e.g. via policy routing).
+
+        An additional mask may be appended to the mark, separated by
+        <literal>/</literal>. The default mask if omitted is 0xffffffff. The
+        special value <literal>%same</literal> uses the value (but not the mask)
+        from <option>mark_in</option> as mark value, which can be fixed,
+        <literal>%unique</literal> or <literal>%unique-dir</literal>.
+
+        Setting marks in XFRM input requires Linux 4.19 or higher.
+      '';
+
+      set_mark_out = mkStrParam "0/0x00000000" ''
+        Netfilter mark applied to packets after the outbound IPsec SA processed
+        them. This allows processing ESP packets differently than the original
+        traffic (e.g. via policy routing).
+
+        An additional mask may be appended to the mark, separated by
+        <literal>/</literal>. The default mask if omitted is 0xffffffff. The
+        special value <literal>%same</literal> uses the value (but not the mask)
+        from <option>mark_out</option> as mark value, which can be fixed,
+        <literal>%unique_</literal> or <literal>%unique-dir</literal>.
+
+        Setting marks in XFRM output is supported since Linux 4.14. Setting a
+        mask requires at least Linux 4.19.
+      '';
+
       tfc_padding = mkParamOfType (with lib.types; either int (enum ["mtu"])) 0 ''
         Pads ESP packets with additional data to have a consistent ESP packet
         size for improved Traffic Flow Confidentiality. The padding defines the
@@ -946,6 +984,33 @@ in {
         supported, but the installation does not fail otherwise.
       '';
 
+      copy_df = mkYesNoParam yes ''
+        Whether to copy the DF bit to the outer IPv4 header in tunnel mode. This
+        effectively disables Path MTU discovery (PMTUD). Controlling this
+        behavior is not supported by all kernel interfaces.
+      '';
+
+      copy_ecn = mkYesNoParam yes ''
+        Whether to copy the ECN (Explicit Congestion Notification) header field
+        to/from the outer IP header in tunnel mode. Controlling this behavior is
+        not supported by all kernel interfaces.
+      '';
+
+      copy_dscp = mkEnumParam [ "out" "in" "yes" "no" ] "out" ''
+        Whether to copy the DSCP (Differentiated Services Field Codepoint)
+        header field to/from the outer IP header in tunnel mode. The value
+        <literal>out</literal> only copies the field from the inner to the outer
+        header, the value <literal>in</literal> does the opposite and only
+        copies the field from the outer to the inner header when decapsulating,
+        the value <literal>yes</literal> copies the field in both directions,
+        and the value <literal>no</literal> disables copying the field
+        altogether. Setting this to <literal>yes</literal> or
+        <literal>in</literal> could allow an attacker to adversely affect other
+        traffic at the receiver, which is why the default is
+        <literal>out</literal>. Controlling this behavior is not supported by
+        all kernel interfaces.
+      '';
+
       start_action = mkEnumParam ["none" "trap" "start"] "none" ''
         Action to perform after loading the configuration.
         <itemizedlist>
@@ -1060,6 +1125,24 @@ in {
       defined in a unique section having the <literal>ike</literal> prefix.
     '';
 
+    ppk = mkPrefixedAttrsOfParams {
+      secret = mkOptionalStrParam ''
+	      Value of the PPK. It may either be an ASCII string, a hex encoded string
+	      if it has a <literal>0x</literal> prefix or a Base64 encoded string if
+	      it has a <literal>0s</literal> prefix in its value. Should have at least
+	      256 bits of entropy for 128-bit security.
+      '';
+
+      id = mkPrefixedAttrsOfParam (mkOptionalStrParam "") ''
+	      PPK identity the PPK belongs to. Multiple unique identities may be
+	      specified, each having an <literal>id</literal> prefix, if a secret is
+	      shared between multiple peers.
+      '';
+    } ''
+	    Postquantum Preshared Key (PPK) section for a specific secret. Each PPK is
+	    defined in a unique section having the <literal>ppk</literal> prefix.
+    '';
+
     private = mkPrefixedAttrsOfParams {
       file = mkOptionalStrParam ''
         File name in the private folder for which this passphrase should be used.