X-Git-Url: https://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fnetwork%2Fnetworkd-route.c;h=d0a04ecfeebcd3388469cda35e22e083101c7b5d;hp=918a1d0191790bf5e6960116d4dc5a16ffdda20c;hb=0372cb2bd2342fa5c5585c666f79159a8341f4a6;hpb=f579559b3a14c1f1ef96c372e7626c4733e6ef7d

diff --git a/src/network/networkd-route.c b/src/network/networkd-route.c
index 918a1d019..d0a04ecfe 100644
--- a/src/network/networkd-route.c
+++ b/src/network/networkd-route.c
@@ -26,18 +26,54 @@
 #include "utf8.h"
 #include "util.h"
 #include "conf-parser.h"
-#include "net-util.h"
+#include "network-internal.h"
 
-int route_new(Network *network, Route **ret) {
+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);
+                if (route) {
+                        *ret = route;
+                        route = NULL;
+
+                        return 0;
+                }
+        }
+
         route = new0(Route, 1);
         if (!route)
                 return -ENOMEM;
 
+        route->family = AF_UNSPEC;
+        route->scope = RT_SCOPE_UNIVERSE;
+
         route->network = network;
 
-        LIST_PREPEND(routes, network->routes, route);
+        LIST_PREPEND(routes, network->static_routes, route);
+
+        if (section) {
+                route->section = section;
+                hashmap_put(network->routes_by_section, &route->section, route);
+        }
+
+        *ret = route;
+        route = NULL;
+
+        return 0;
+}
+
+int route_new_dynamic(Route **ret) {
+        _cleanup_route_free_ Route *route = NULL;
+
+        route = new0(Route, 1);
+        if (!route)
+                return -ENOMEM;
+
+        route->family = AF_UNSPEC;
+        route->scope = RT_SCOPE_UNIVERSE;
 
         *ret = route;
         route = NULL;
@@ -49,47 +85,155 @@ void route_free(Route *route) {
         if (!route)
                 return;
 
-        LIST_REMOVE(routes, route->network->routes, route);
+        if (route->network) {
+                LIST_REMOVE(routes, route->network->static_routes, route);
+
+                if (route->section)
+                        hashmap_remove(route->network->routes_by_section,
+                                       &route->section);
+        }
 
         free(route);
 }
 
-int route_configure(Manager *manager, Route *route, Link *link) {
-        _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+int route_drop(Route *route, Link *link,
+               sd_rtnl_message_handler_t callback) {
+        _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
         int r;
 
-        assert(manager);
         assert(link);
+        assert(link->manager);
+        assert(link->manager->rtnl);
         assert(link->ifindex > 0);
         assert(route->family == AF_INET || route->family == AF_INET6);
 
-        r = sd_rtnl_message_route_new(RTM_NEWROUTE, route->family, 0, 0, 0,
-                                      RT_TABLE_MAIN, RT_SCOPE_UNIVERSE, RTPROT_BOOT,
-                                      RTN_UNICAST, 0, &req);
+        r = sd_rtnl_message_new_route(link->manager->rtnl, &req,
+                                      RTM_DELROUTE, route->family);
         if (r < 0) {
-                log_error("Could not create RTM_NEWROUTE message: %s", strerror(-r));
+                log_error("Could not create RTM_DELROUTE message: %s", strerror(-r));
                 return r;
         }
 
-        r = sd_rtnl_message_append(req, RTA_GATEWAY, &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;
         }
 
-        r = sd_rtnl_message_append(req, RTA_OIF, &link->ifindex);
+        if (route->dst_prefixlen) {
+                if (route->family == AF_INET)
+                        r = sd_rtnl_message_append_in_addr(req, RTA_DST, &route->dst_addr.in);
+                else if (route->family == AF_INET6)
+                        r = sd_rtnl_message_append_in6_addr(req, RTA_DST, &route->dst_addr.in6);
+                if (r < 0) {
+                        log_error("Could not append RTA_DST attribute: %s", strerror(-r));
+                        return r;
+                }
+
+                r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen);
+                if (r < 0) {
+                        log_error("Could not set destination prefix length: %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));
+                return r;
+        }
+
+        r = sd_rtnl_message_append_u32(req, RTA_PRIORITY, route->metrics);
+        if (r < 0) {
+                log_error("Could not append RTA_PRIORITY attribute: %s", strerror(-r));
+                return r;
+        }
+
+        r = sd_rtnl_message_append_u32(req, RTA_OIF, link->ifindex);
         if (r < 0) {
                 log_error("Could not append RTA_OIF attribute: %s", strerror(-r));
                 return r;
         }
 
-        r = sd_rtnl_send_with_reply_and_block(manager->rtnl, req, 0, NULL);
+        r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
+        if (r < 0) {
+                log_error("Could not send rtnetlink message: %s", strerror(-r));
+                return r;
+        }
+
+        return 0;
+}
+
+int route_configure(Route *route, Link *link,
+                    sd_rtnl_message_handler_t callback) {
+        _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+        int r;
+
+        assert(link);
+        assert(link->manager);
+        assert(link->manager->rtnl);
+        assert(link->ifindex > 0);
+        assert(route->family == AF_INET || route->family == AF_INET6);
+
+        r = sd_rtnl_message_new_route(link->manager->rtnl, &req,
+                                      RTM_NEWROUTE, route->family);
+        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 (route->dst_prefixlen) {
+                if (route->family == AF_INET)
+                        r = sd_rtnl_message_append_in_addr(req, RTA_DST, &route->dst_addr.in);
+                else if (route->family == AF_INET6)
+                        r = sd_rtnl_message_append_in6_addr(req, RTA_DST, &route->dst_addr.in6);
+                if (r < 0) {
+                        log_error("Could not append RTA_DST attribute: %s", strerror(-r));
+                        return r;
+                }
+
+                r = sd_rtnl_message_route_set_dst_prefixlen(req, route->dst_prefixlen);
+                if (r < 0) {
+                        log_error("Could not set destination prefix length: %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));
+                return r;
+        }
+
+        r = sd_rtnl_message_append_u32(req, RTA_PRIORITY, route->metrics);
         if (r < 0) {
-                log_error("Could not configure route: %s", strerror(-r));
+                log_error("Could not append RTA_PRIORITY attribute: %s", strerror(-r));
+                return r;
+        }
+
+        r = sd_rtnl_message_append_u32(req, RTA_OIF, link->ifindex);
+        if (r < 0) {
+                log_error("Could not append RTA_OIF attribute: %s", strerror(-r));
                 return r;
         }
 
-        log_info("Configured route");
+        r = sd_rtnl_call_async(link->manager->rtnl, req, callback, link, 0, NULL);
+        if (r < 0) {
+                log_error("Could not send rtnetlink message: %s", strerror(-r));
+                return r;
+        }
 
         return 0;
 }
@@ -98,21 +242,30 @@ int config_parse_gateway(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;
         _cleanup_free_ char *route = NULL;
         int r;
 
         assert(filename);
+        assert(section);
         assert(lvalue);
         assert(rvalue);
         assert(data);
 
-        r = route_new(userdata, &n);
+        if (streq(section, "Network")) {
+                /* we are not in an Route section, so treat
+                 * this as the special '0' section */
+                section_line = 0;
+        }
+
+        r = route_new_static(network, section_line, &n);
         if (r < 0)
                 return r;
 
@@ -127,3 +280,79 @@ int config_parse_gateway(const char *unit,
 
         return 0;
 }
+
+int config_parse_destination(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;
+        _cleanup_free_ char *address = NULL;
+        const char *e;
+        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;
+
+        /* Destination=address/prefixlen */
+
+        /* 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();
+        }
+
+        r = net_parse_inaddr(address, &n->family, &n->dst_addr);
+        if (r < 0) {
+                log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+                           "Destination is invalid, ignoring assignment: %s", address);
+                return 0;
+        }
+
+        /* prefixlen */
+        if (e) {
+                unsigned i;
+
+                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);
+                        return 0;
+                }
+
+                n->dst_prefixlen = (unsigned char) i;
+        } else {
+                switch (n->family) {
+                        case AF_INET:
+                                n->dst_prefixlen = 32;
+                                break;
+                        case AF_INET6:
+                                n->dst_prefixlen = 128;
+                                break;
+                }
+        }
+
+        n = NULL;
+
+        return 0;
+}