networkd: route - allow routes without a gateway

[elogind.git] / src / network / networkd-route.c

diff --git a/src/network/networkd-route.c b/src/network/networkd-route.c
index d0a04ecfeebcd3388469cda35e22e083101c7b5d..82c9e002fdd337942dd666570f88d7826a8c4662 100644 (file)
--- a/src/network/networkd-route.c
+++ b/src/network/networkd-route.c
@@ -22,6 +22,7 @@
 #include <net/if.h>
 
 #include "networkd.h"
+#include "networkd-link.h"
 
 #include "utf8.h"
 #include "util.h"
@@ -32,9 +33,8 @@ int route_new_static(Network *network, unsigned section, Route **ret) {
         _cleanup_route_free_ Route *route = NULL;
 
         if (section) {
-                uint64_t key = section;
-
-                route = hashmap_get(network->routes_by_section, &key);
+                route = hashmap_get(network->routes_by_section,
+                                    UINT_TO_PTR(section));
                 if (route) {
                         *ret = route;
                         route = NULL;
@@ -49,6 +49,7 @@ int route_new_static(Network *network, unsigned section, Route **ret) {
 
         route->family = AF_UNSPEC;
         route->scope = RT_SCOPE_UNIVERSE;
+        route->protocol = RTPROT_STATIC;
 
         route->network = network;
 
@@ -56,7 +57,8 @@ int route_new_static(Network *network, unsigned section, Route **ret) {
 
         if (section) {
                 route->section = section;
-                hashmap_put(network->routes_by_section, &route->section, route);
+                hashmap_put(network->routes_by_section,
+                            UINT_TO_PTR(route->section), route);
         }
 
         *ret = route;
@@ -65,7 +67,7 @@ int route_new_static(Network *network, unsigned section, Route **ret) {
         return 0;
 }
 
-int route_new_dynamic(Route **ret) {
+int route_new_dynamic(Route **ret, unsigned char rtm_protocol) {
         _cleanup_route_free_ Route *route = NULL;
 
         route = new0(Route, 1);
@@ -74,6 +76,7 @@ int route_new_dynamic(Route **ret) {
 
         route->family = AF_UNSPEC;
         route->scope = RT_SCOPE_UNIVERSE;
+        route->protocol = rtm_protocol;
 
         *ret = route;
         route = NULL;
@@ -90,7 +93,7 @@ void route_free(Route *route) {
 
                 if (route->section)
                         hashmap_remove(route->network->routes_by_section,
-                                       &route->section);
+                                       UINT_TO_PTR(route->section));
         }
 
         free(route);
@@ -108,19 +111,22 @@ int route_drop(Route *route, Link *link,
         assert(route->family == AF_INET || route->family == AF_INET6);
 
         r = sd_rtnl_message_new_route(link->manager->rtnl, &req,
-                                      RTM_DELROUTE, route->family);
+                                      RTM_DELROUTE, route->family,
+                                      route->protocol);
         if (r < 0) {
                 log_error("Could not create RTM_DELROUTE message: %s", strerror(-r));
                 return r;
         }
 
-        if (route->family == AF_INET)
-                r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in);
-        else if (route->family == AF_INET6)
-                r = sd_rtnl_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6);
-        if (r < 0) {
-                log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r));
-                return r;
+        if (!in_addr_is_null(route->family, &route->in_addr)) {
+                if (route->family == AF_INET)
+                        r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in);
+                else if (route->family == AF_INET6)
+                        r = sd_rtnl_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6);
+                if (r < 0) {
+                        log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r));
+                        return r;
+                }
         }
 
         if (route->dst_prefixlen) {
@@ -140,6 +146,17 @@ int route_drop(Route *route, Link *link,
                 }
         }
 
+        if (!in_addr_is_null(route->family, &route->prefsrc_addr)) {
+                if (route->family == AF_INET)
+                        r = sd_rtnl_message_append_in_addr(req, RTA_PREFSRC, &route->prefsrc_addr.in);
+                else if (route->family == AF_INET6)
+                        r = sd_rtnl_message_append_in6_addr(req, RTA_PREFSRC, &route->prefsrc_addr.in6);
+                if (r < 0) {
+                        log_error("Could not append RTA_PREFSRC attribute: %s", strerror(-r));
+                        return r;
+                }
+        }
+
         r = sd_rtnl_message_route_set_scope(req, route->scope);
         if (r < 0) {
                 log_error("Could not set scope: %s", strerror(-r));
@@ -164,6 +181,8 @@ int route_drop(Route *route, Link *link,
                 return r;
         }
 
+        link_ref(link);
+
         return 0;
 }
 
@@ -179,19 +198,22 @@ int route_configure(Route *route, Link *link,
         assert(route->family == AF_INET || route->family == AF_INET6);
 
         r = sd_rtnl_message_new_route(link->manager->rtnl, &req,
-                                      RTM_NEWROUTE, route->family);
+                                      RTM_NEWROUTE, route->family,
+                                      route->protocol);
         if (r < 0) {
                 log_error("Could not create RTM_NEWROUTE message: %s", strerror(-r));
                 return r;
         }
 
-        if (route->family == AF_INET)
-                r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in);
-        else if (route->family == AF_INET6)
-                r = sd_rtnl_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6);
-        if (r < 0) {
-                log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r));
-                return r;
+        if (!in_addr_is_null(route->family, &route->in_addr)) {
+                if (route->family == AF_INET)
+                        r = sd_rtnl_message_append_in_addr(req, RTA_GATEWAY, &route->in_addr.in);
+                else if (route->family == AF_INET6)
+                        r = sd_rtnl_message_append_in6_addr(req, RTA_GATEWAY, &route->in_addr.in6);
+                if (r < 0) {
+                        log_error("Could not append RTA_GATEWAY attribute: %s", strerror(-r));
+                        return r;
+                }
         }
 
         if (route->dst_prefixlen) {
@@ -211,6 +233,17 @@ int route_configure(Route *route, Link *link,
                 }
         }
 
+        if (!in_addr_is_null(route->family, &route->prefsrc_addr)) {
+                if (route->family == AF_INET)
+                        r = sd_rtnl_message_append_in_addr(req, RTA_PREFSRC, &route->prefsrc_addr.in);
+                else if (route->family == AF_INET6)
+                        r = sd_rtnl_message_append_in6_addr(req, RTA_PREFSRC, &route->prefsrc_addr.in6);
+                if (r < 0) {
+                        log_error("Could not append RTA_PREFSRC attribute: %s", strerror(-r));
+                        return r;
+                }
+        }
+
         r = sd_rtnl_message_route_set_scope(req, route->scope);
         if (r < 0) {
                 log_error("Could not set scope: %s", strerror(-r));
@@ -235,6 +268,8 @@ int route_configure(Route *route, Link *link,
                 return r;
         }
 
+        link_ref(link);
+
         return 0;
 }
 
@@ -248,10 +283,11 @@ int config_parse_gateway(const char *unit,
                 const char *rvalue,
                 void *data,
                 void *userdata) {
+
         Network *network = userdata;
         _cleanup_route_free_ Route *n = NULL;
-        _cleanup_free_ char *route = NULL;
-        int r;
+        union in_addr_union buffer;
+        int r, f;
 
         assert(filename);
         assert(section);
@@ -269,13 +305,15 @@ int config_parse_gateway(const char *unit,
         if (r < 0)
                 return r;
 
-        r = net_parse_inaddr(rvalue, &n->family, &n->in_addr);
+        r = in_addr_from_string_auto(rvalue, &f, &buffer);
         if (r < 0) {
                 log_syntax(unit, LOG_ERR, filename, line, EINVAL,
-                           "Route is invalid, ignoring assignment: %s", route);
+                           "Route is invalid, ignoring assignment: %s", rvalue);
                 return 0;
         }
 
+        n->family = f;
+        n->in_addr = buffer;
         n = NULL;
 
         return 0;
@@ -291,11 +329,12 @@ int config_parse_destination(const char *unit,
                 const char *rvalue,
                 void *data,
                 void *userdata) {
+
         Network *network = userdata;
         _cleanup_route_free_ Route *n = NULL;
-        _cleanup_free_ char *address = NULL;
-        const char *e;
-        int r;
+        const char *address, *e;
+        union in_addr_union buffer;
+        int r, f;
 
         assert(filename);
         assert(section);
@@ -311,17 +350,12 @@ int config_parse_destination(const char *unit,
 
         /* address */
         e = strchr(rvalue, '/');
-        if (e) {
-                address = strndup(rvalue, e - rvalue);
-                if (!address)
-                        return log_oom();
-        } else {
-                address = strdup(rvalue);
-                if (!address)
-                        return log_oom();
-        }
+        if (e)
+                address = strndupa(rvalue, e - rvalue);
+        else
+                address = rvalue;
 
-        r = net_parse_inaddr(address, &n->family, &n->dst_addr);
+        r = in_addr_from_string_auto(address, &f, &buffer);
         if (r < 0) {
                 log_syntax(unit, LOG_ERR, filename, line, EINVAL,
                            "Destination is invalid, ignoring assignment: %s", address);
@@ -335,8 +369,7 @@ int config_parse_destination(const char *unit,
                 r = safe_atou(e + 1, &i);
                 if (r < 0) {
                         log_syntax(unit, LOG_ERR, filename, line, EINVAL,
-                                   "Route destination prefix length is invalid, "
-                                   "ignoring assignment: %s", e + 1);
+                                   "Route destination prefix length is invalid, ignoring assignment: %s", e + 1);
                         return 0;
                 }
 
@@ -352,6 +385,43 @@ int config_parse_destination(const char *unit,
                 }
         }
 
+        n->family = f;
+        n->dst_addr = buffer;
+        n = NULL;
+
+        return 0;
+}
+
+int config_parse_route_priority(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_route_free_ Route *n = NULL;
+        int r;
+
+        assert(filename);
+        assert(section);
+        assert(lvalue);
+        assert(rvalue);
+        assert(data);
+
+        r = route_new_static(network, section_line, &n);
+        if (r < 0)
+                return r;
+
+        r = config_parse_unsigned(unit, filename, line, section,
+                                  section_line, lvalue, ltype,
+                                  rvalue, &n->metrics, userdata);
+        if (r < 0)
+                return r;
+
         n = NULL;
 
         return 0;