sd-rtnl: extend type system to allow address-family to decide the union members

[elogind.git] / src / libsystemd / sd-rtnl / rtnl-types.c

diff --git a/src/libsystemd/sd-rtnl/rtnl-types.c b/src/libsystemd/sd-rtnl/rtnl-types.c
index ef3aebf58c8cb8b73f038861501695a92e18af34..4ef698a7f5f19d57db623bcb74824fb40b79a2dd 100644 (file)
--- a/src/libsystemd/sd-rtnl/rtnl-types.c
+++ b/src/libsystemd/sd-rtnl/rtnl-types.c
@@ -177,6 +177,8 @@ static const char* const nl_union_link_info_data_table[_NL_UNION_LINK_INFO_DATA_
         [NL_UNION_LINK_INFO_DATA_IPIP_TUNNEL] = "ipip",
         [NL_UNION_LINK_INFO_DATA_IPGRE_TUNNEL] = "gre",
         [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] = "gretap",
+        [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] = "ip6gre",
+        [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] = "ip6gretap",
         [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] = "sit",
         [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] = "vti",
         [NL_UNION_LINK_INFO_DATA_IP6TNL_TUNNEL] = "ip6tnl",
@@ -205,6 +207,10 @@ static const NLTypeSystem rtnl_link_info_data_type_systems[_NL_UNION_LINK_INFO_D
                                                     .types = rtnl_link_info_data_ipgre_types },
         [NL_UNION_LINK_INFO_DATA_IPGRETAP_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
                                                     .types = rtnl_link_info_data_ipgre_types },
+        [NL_UNION_LINK_INFO_DATA_IP6GRE_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
+                                                    .types = rtnl_link_info_data_ipgre_types },
+        [NL_UNION_LINK_INFO_DATA_IP6GRETAP_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipgre_types) - 1,
+                                                    .types = rtnl_link_info_data_ipgre_types },
         [NL_UNION_LINK_INFO_DATA_SIT_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_iptun_types) - 1,
                                                   .types = rtnl_link_info_data_iptun_types },
         [NL_UNION_LINK_INFO_DATA_VTI_TUNNEL] =  { .max = ELEMENTSOF(rtnl_link_info_data_ipvti_types) - 1,
@@ -218,6 +224,7 @@ static const NLTypeSystemUnion rtnl_link_info_data_type_system_union = {
         .num = _NL_UNION_LINK_INFO_DATA_MAX,
         .lookup = nl_union_link_info_data_from_string,
         .type_systems = rtnl_link_info_data_type_systems,
+        .match_type = NL_MATCH_SIBLING,
         .match = IFLA_INFO_KIND,
 };
 
@@ -236,7 +243,7 @@ static const NLTypeSystem rtnl_link_info_type_system = {
         .types = rtnl_link_info_types,
 };
 
-static const struct NLType rtnl_bridge_port_types[IFLA_BRPORT_MAX + 1] = {
+static const struct NLType rtnl_prot_info_bridge_port_types[IFLA_BRPORT_MAX + 1] = {
         [IFLA_BRPORT_STATE]     = { .type = NLA_U8 },
         [IFLA_BRPORT_COST]      = { .type = NLA_U32 },
         [IFLA_BRPORT_PRIORITY]  = { .type = NLA_U16 },
@@ -247,9 +254,15 @@ static const struct NLType rtnl_bridge_port_types[IFLA_BRPORT_MAX + 1] = {
         [IFLA_BRPORT_UNICAST_FLOOD] = { .type = NLA_U8 },
 };
 
-static const NLTypeSystem rtnl_bridge_port_type_system = {
-        .max = ELEMENTSOF(rtnl_bridge_port_types) - 1,
-        .types = rtnl_bridge_port_types,
+static const NLTypeSystem rtnl_prot_info_type_systems[AF_MAX] = {
+        [AF_BRIDGE] =   { .max = ELEMENTSOF(rtnl_prot_info_bridge_port_types) - 1,
+                          .types = rtnl_prot_info_bridge_port_types },
+};
+
+static const NLTypeSystemUnion rtnl_prot_info_type_system_union = {
+        .num = AF_MAX,
+        .type_systems = rtnl_prot_info_type_systems,
+        .match_type = NL_MATCH_PROTOCOL,
 };
 
 static const NLType rtnl_link_types[IFLA_MAX + 1 ] = {
@@ -267,9 +280,8 @@ static const NLType rtnl_link_types[IFLA_MAX + 1 ] = {
         [IFLA_MASTER]           = { .type = NLA_U32 },
 /*
         [IFLA_WIRELESS],
-        [IFLA_PROTINFO],
 */
-        [IFLA_PROTINFO]         = { .type = NLA_NESTED, .type_system = &rtnl_bridge_port_type_system },
+        [IFLA_PROTINFO]         = { .type = NLA_UNION, .type_system_union = &rtnl_prot_info_type_system_union },
         [IFLA_TXQLEN]           = { .type = NLA_U32 },
 /*
         [IFLA_MAP]              = { .len = sizeof(struct rtnl_link_ifmap) },
@@ -457,6 +469,7 @@ int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union
         int type;
 
         assert(type_system_union);
+        assert_return(type_system_union->match_type == NL_MATCH_SIBLING, -EINVAL);
         assert(type_system_union->lookup);
         assert(type_system_union->type_systems);
         assert(ret);
@@ -472,3 +485,25 @@ int type_system_union_get_type_system(const NLTypeSystemUnion *type_system_union
 
         return 0;
 }
+
+int type_system_union_protocol_get_type_system(const NLTypeSystemUnion *type_system_union, const NLTypeSystem **ret, uint16_t protocol) {
+        const NLTypeSystem *type_system;
+
+        assert(type_system_union);
+        assert(type_system_union->type_systems);
+        assert(ret);
+        assert_return(type_system_union->match_type == NL_MATCH_PROTOCOL, -EINVAL);
+        assert_return(protocol < type_system_union->num, -EINVAL);
+
+        if (protocol >= type_system_union->num)
+                return -ENOTSUP;
+
+        type_system = &type_system_union->type_systems[protocol];
+
+        if (!type_system)
+                return -ENOTSUP;
+
+        *ret = type_system;
+
+        return 0;
+}