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authorTom Gundersen <teg@jklm.no>2015-10-25 14:46:21 +0100
committerTom Gundersen <teg@jklm.no>2015-10-30 12:32:48 +0100
commit1c8e710c2b479129c3ad06a0e8e2d21ae4aefd38 (patch)
tree3266403866a23d603f8156ee510672e2ec3d8bcc /src/network/networkd-route.c
parentcab974b035c24a87f9a8cf152ea415b0c14404b7 (diff)
networkd: route - track routes
Diffstat (limited to 'src/network/networkd-route.c')
-rw-r--r--src/network/networkd-route.c166
1 files changed, 166 insertions, 0 deletions
diff --git a/src/network/networkd-route.c b/src/network/networkd-route.c
index 078d9c1618..7c0d03cdc7 100644
--- a/src/network/networkd-route.c
+++ b/src/network/networkd-route.c
@@ -26,6 +26,7 @@
#include "networkd-route.h"
#include "networkd.h"
#include "parse-util.h"
+#include "set.h"
#include "string-util.h"
#include "util.h"
@@ -95,6 +96,11 @@ void route_free(Route *route) {
UINT_TO_PTR(route->section));
}
+ if (route->link) {
+ set_remove(route->link->routes, route);
+ set_remove(route->link->routes_foreign, route);
+ }
+
free(route);
}
@@ -166,6 +172,162 @@ static const struct hash_ops route_hash_ops = {
.compare = route_compare_func
};
+int route_get(Link *link,
+ int family,
+ union in_addr_union *dst,
+ unsigned char dst_prefixlen,
+ unsigned char tos,
+ uint32_t priority,
+ unsigned char table,
+ Route **ret) {
+ Route route = {
+ .family = family,
+ .dst_prefixlen = dst_prefixlen,
+ .tos = tos,
+ .priority = priority,
+ .table = table,
+ }, *existing;
+
+ assert(link);
+ assert(dst);
+ assert(ret);
+
+ route.dst = *dst;
+
+ existing = set_get(link->routes, &route);
+ if (existing) {
+ *ret = existing;
+ return 1;
+ } else {
+ existing = set_get(link->routes_foreign, &route);
+ if (!existing)
+ return -ENOENT;
+ }
+
+ *ret = existing;
+
+ return 0;
+}
+
+static int route_add_internal(Link *link, Set **routes,
+ int family,
+ union in_addr_union *dst,
+ unsigned char dst_prefixlen,
+ unsigned char tos,
+ uint32_t priority,
+ unsigned char table, Route **ret) {
+ _cleanup_route_free_ Route *route = NULL;
+ int r;
+
+ assert(link);
+ assert(routes);
+ assert(dst);
+
+ r = route_new(&route);
+ if (r < 0)
+ return r;
+
+ route->family = family;
+ route->dst = *dst;
+ route->dst_prefixlen = dst_prefixlen;
+ route->tos = tos;
+ route->priority = priority;
+ route->table = table;
+
+ r = set_ensure_allocated(routes, &route_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = set_put(*routes, route);
+ if (r < 0)
+ return r;
+
+ route->link = link;
+
+ if (ret)
+ *ret = route;
+
+ route = NULL;
+
+ return 0;
+}
+
+int route_add_foreign(Link *link,
+ int family,
+ union in_addr_union *dst,
+ unsigned char dst_prefixlen,
+ unsigned char tos,
+ uint32_t priority,
+ unsigned char table, Route **ret) {
+ return route_add_internal(link, &link->routes_foreign, family, dst, dst_prefixlen, tos, priority, table, ret);
+}
+
+int route_add(Link *link,
+ int family,
+ union in_addr_union *dst,
+ unsigned char dst_prefixlen,
+ unsigned char tos,
+ uint32_t priority,
+ unsigned char table, Route **ret) {
+ Route *route;
+ int r;
+
+ r = route_get(link, family, dst, dst_prefixlen, tos, priority, table, &route);
+ if (r == -ENOENT) {
+ /* Route does not exist, create a new one */
+ r = route_add_internal(link, &link->routes, family, dst, dst_prefixlen, tos, priority, table, &route);
+ if (r < 0)
+ return r;
+ } else if (r == 0) {
+ /* Take over a foreign route */
+ r = set_ensure_allocated(&link->routes, &route_hash_ops);
+ if (r < 0)
+ return r;
+
+ r = set_put(link->routes, route);
+ if (r < 0)
+ return r;
+
+ set_remove(link->routes_foreign, route);
+ } else if (r == 1) {
+ /* Route exists, do nothing */
+ ;
+ } else
+ return r;
+
+ *ret = route;
+
+ return 0;
+}
+
+int route_update(Route *route,
+ union in_addr_union *src,
+ unsigned char src_prefixlen,
+ union in_addr_union *gw,
+ union in_addr_union *prefsrc,
+ unsigned char scope,
+ unsigned char protocol) {
+ assert(route);
+ assert(src);
+ assert(gw);
+ assert(prefsrc);
+
+ route->src = *src;
+ route->src_prefixlen = src_prefixlen;
+ route->gw = *gw;
+ route->prefsrc = *prefsrc;
+ route->scope = scope;
+ route->protocol = protocol;
+
+ return 0;
+}
+
+void route_drop(Route *route) {
+ assert(route);
+
+ route_free(route);
+}
+
int route_remove(Route *route, Link *link,
sd_netlink_message_handler_t callback) {
_cleanup_netlink_message_unref_ sd_netlink_message *req = NULL;
@@ -327,6 +489,10 @@ int route_configure(Route *route, Link *link,
link_ref(link);
+ r = route_add(link, route->family, &route->dst, route->dst_prefixlen, route->tos, route->priority, route->table, NULL);
+ if (r < 0)
+ return log_error_errno(r, "Could not add route: %m");
+
return 0;
}