networkd: add scope to address section (#6449)

This work allows to configure address Scope to

host | link | global or a number.

Closes #6446

4 files changed, 54 insertions, 1 deletions

diff --git a/man/systemd.network.xml b/man/systemd.network.xml
index 49d97cb604..438e1126dc 100644
--- a/man/systemd.network.xml
+++ b/man/systemd.network.xml
@@ -749,6 +749,14 @@
           </listitem>
         </varlistentry>
         <varlistentry>
+          <term><varname>Scope=</varname></term>
+          <listitem>
+            <para>The scope of the address, which can be <literal>global</literal>,
+            <literal>link</literal> or <literal>host</literal> or an unsigned integer ranges 0 to 255.
+            Defaults to <literal>global</literal>.</para>
+          </listitem>
+        </varlistentry>
+        <varlistentry>
           <term><varname>HomeAddress=</varname></term>
           <listitem>
             <para>Takes a boolean argument. Designates this address the "home address" as defined in
diff --git a/src/network/networkd-address.c b/src/network/networkd-address.c
index d66b3a288f..7f536b4ba9 100644
--- a/src/network/networkd-address.c
+++ b/src/network/networkd-address.c
@@ -927,6 +927,49 @@ int config_parse_address_flags(const char *unit,
         return 0;
 }
 
+int config_parse_address_scope(const char *unit,
+                               const char *filename,
+                               unsigned line,
+                               const char *section,
+                               unsigned section_line,
+                               const char *lvalue,
+                               int ltype,
+                               const char *rvalue,
+                               void *data,
+                               void *userdata) {
+        Network *network = userdata;
+        _cleanup_address_free_ Address *n = NULL;
+        int r;
+
+        assert(filename);
+        assert(section);
+        assert(lvalue);
+        assert(rvalue);
+        assert(data);
+
+        r = address_new_static(network, filename, section_line, &n);
+        if (r < 0)
+                return r;
+
+        if (streq(rvalue, "host"))
+                n->scope = RT_SCOPE_HOST;
+        else if (streq(rvalue, "link"))
+                n->scope = RT_SCOPE_LINK;
+        else if (streq(rvalue, "global"))
+                n->scope = RT_SCOPE_UNIVERSE;
+        else {
+                r = safe_atou8(rvalue , &n->scope);
+                if (r < 0) {
+                        log_syntax(unit, LOG_ERR, filename, line, r, "Could not parse address scope \"%s\", ignoring assignment: %m", rvalue);
+                        return 0;
+                }
+        }
+
+        n = NULL;
+
+        return 0;
+}
+
 bool address_is_ready(const Address *a) {
         assert(a);
 
@@ -1179,4 +1222,4 @@ int config_parse_prefix_lifetime(const char *unit,
         p = NULL;
 
         return 0;
-};
+}
diff --git a/src/network/networkd-address.h b/src/network/networkd-address.h
index 065328482e..3281c6d3c2 100644
--- a/src/network/networkd-address.h
+++ b/src/network/networkd-address.h
@@ -102,6 +102,7 @@ int config_parse_broadcast(const char *unit, const char *filename, unsigned line
 int config_parse_label(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 int config_parse_lifetime(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 int config_parse_address_flags(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_address_scope(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 int config_parse_router_preference(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 int config_parse_prefix(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
 int config_parse_prefix_flags(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
diff --git a/src/network/networkd-network-gperf.gperf b/src/network/networkd-network-gperf.gperf
index a2d38501a5..a225836598 100644
--- a/src/network/networkd-network-gperf.gperf
+++ b/src/network/networkd-network-gperf.gperf
@@ -80,6 +80,7 @@ Address.DuplicateAddressDetection,      config_parse_address_flags,
 Address.ManageTemporaryAddress,         config_parse_address_flags,                     0,                             0
 Address.PrefixRoute,                    config_parse_address_flags,                     0,                             0
 Address.AutoJoin,                       config_parse_address_flags,                     0,                             0
+Address.Scope,                          config_parse_address_scope,                     0,                             0
 IPv6AddressLabel.Prefix,                config_parse_address_label_prefix,              0,                             0
 IPv6AddressLabel.Label,                 config_parse_address_label,                     0,                             0
 Route.Gateway,                          config_parse_gateway,                           0,                             0