networkd: ndisc - split out from dhcp6 code

3 files changed, 103 insertions, 78 deletions

diff --git a/src/network/networkd-dhcp6.c b/src/network/networkd-dhcp6.c
index 42a6f382b0..fa02aa0a3d 100644
--- a/src/network/networkd-dhcp6.c
+++ b/src/network/networkd-dhcp6.c
@@ -179,34 +179,29 @@ static void dhcp6_handler(sd_dhcp6_client *client, int event, void *userdata) {
         link_check_ready(link);
 }
 
-static int dhcp6_configure(Link *link, int event) {
+int dhcp6_configure(Link *link, bool inf_req) {
         int r;
         bool information_request;
 
         assert_return(link, -EINVAL);
-        assert_return(IN_SET(event, SD_NDISC_EVENT_ROUTER_ADVERTISMENT_TIMEOUT,
-                             SD_NDISC_EVENT_ROUTER_ADVERTISMENT_OTHER,
-                             SD_NDISC_EVENT_ROUTER_ADVERTISMENT_MANAGED), -EINVAL);
 
         link->dhcp6_configured = false;
 
         if (link->dhcp6_client) {
-                r = sd_dhcp6_client_get_information_request(link->dhcp6_client,
-                                                        &information_request);
+                r = sd_dhcp6_client_get_information_request(link->dhcp6_client, &information_request);
                 if (r < 0) {
                         log_link_warning_errno(link, r, "Could not get DHCPv6 Information request setting: %m");
                         goto error;
                 }
 
-                if (information_request && event != SD_NDISC_EVENT_ROUTER_ADVERTISMENT_OTHER) {
+                if (information_request && !inf_req) {
                         r = sd_dhcp6_client_stop(link->dhcp6_client);
                         if (r < 0) {
                                 log_link_warning_errno(link, r, "Could not stop DHCPv6 while setting Managed mode: %m");
                                 goto error;
                         }
 
-                        r = sd_dhcp6_client_set_information_request(link->dhcp6_client,
-                                                                    false);
+                        r = sd_dhcp6_client_set_information_request(link->dhcp6_client, false);
                         if (r < 0) {
                                 log_link_warning_errno(link, r, "Could not unset DHCPv6 Information request: %m");
                                 goto error;
@@ -249,9 +244,8 @@ static int dhcp6_configure(Link *link, int event) {
         if (r < 0)
                 goto error;
 
-        if (event == SD_NDISC_EVENT_ROUTER_ADVERTISMENT_OTHER) {
-                r = sd_dhcp6_client_set_information_request(link->dhcp6_client,
-                                                        true);
+        if (inf_req) {
+                r = sd_dhcp6_client_set_information_request(link->dhcp6_client, true);
                 if (r < 0)
                         goto error;
         }
@@ -267,7 +261,7 @@ static int dhcp6_configure(Link *link, int event) {
         return r;
 }
 
-static int dhcp6_prefix_expired(Link *link) {
+int dhcp6_prefix_expired(Link *link) {
         int r;
         sd_dhcp6_lease *lease;
         struct in6_addr *expired_prefix, ip6_addr;
@@ -305,68 +299,3 @@ static int dhcp6_prefix_expired(Link *link) {
 
         return 0;
 }
-
-static void ndisc_router_handler(sd_ndisc *nd, int event, void *userdata) {
-        Link *link = userdata;
-
-        assert(link);
-        assert(link->network);
-        assert(link->manager);
-
-        if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
-                return;
-
-        switch(event) {
-        case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_NONE:
-                return;
-
-        case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_TIMEOUT:
-        case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_OTHER:
-        case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_MANAGED:
-                dhcp6_configure(link, event);
-
-                break;
-
-        case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_PREFIX_EXPIRED:
-                if (!link->rtnl_extended_attrs)
-                        dhcp6_prefix_expired(link);
-
-                break;
-
-        default:
-                if (event < 0)
-                        log_link_warning_errno(link, event, "IPv6 Neighborhood Discover error: %m");
-                else
-                        log_link_warning(link, "IPv6 Neighborhood Discovery unknown event: %d", event);
-
-                break;
-        }
-
-}
-
-int ndisc_configure(Link *link) {
-        int r;
-
-        assert_return(link, -EINVAL);
-
-        r = sd_ndisc_new(&link->ndisc_router_discovery);
-        if (r < 0)
-                return r;
-
-        r = sd_ndisc_attach_event(link->ndisc_router_discovery, NULL, 0);
-        if (r < 0)
-                return r;
-
-        r = sd_ndisc_set_mac(link->ndisc_router_discovery, &link->mac);
-        if (r < 0)
-                return r;
-
-        r = sd_ndisc_set_index(link->ndisc_router_discovery, link->ifindex);
-        if (r < 0)
-                return r;
-
-        r = sd_ndisc_set_callback(link->ndisc_router_discovery,
-                                  ndisc_router_handler, link);
-
-        return r;
-}
diff --git a/src/network/networkd-link.h b/src/network/networkd-link.h
index f13d904c8e..6bc88157cf 100644
--- a/src/network/networkd-link.h
+++ b/src/network/networkd-link.h
@@ -145,6 +145,8 @@ int link_set_timezone(Link *link, const char *timezone);
 
 int ipv4ll_configure(Link *link);
 int dhcp4_configure(Link *link);
+int dhcp6_configure(Link *link, bool information_request);
+int dhcp6_prefix_expired(Link *link);
 int ndisc_configure(Link *link);
 
 bool link_lldp_enabled(Link *link);
diff --git a/src/network/networkd-ndisc.c b/src/network/networkd-ndisc.c
new file mode 100644
index 0000000000..1721cb36b6
--- /dev/null
+++ b/src/network/networkd-ndisc.c
@@ -0,0 +1,94 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+  This file is part of systemd.
+
+  Copyright (C) 2014 Intel Corporation. All rights reserved.
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <netinet/ether.h>
+#include <linux/if.h>
+
+#include "networkd-link.h"
+
+#include "sd-ndisc.h"
+
+static void ndisc_router_handler(sd_ndisc *nd, int event, void *userdata) {
+        Link *link = userdata;
+
+        assert(link);
+        assert(link->network);
+        assert(link->manager);
+
+        if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER))
+                return;
+
+        switch(event) {
+        case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_NONE:
+                return;
+
+        case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_OTHER:
+                dhcp6_configure(link, true);
+
+                break;
+        case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_TIMEOUT:
+        case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_MANAGED:
+                dhcp6_configure(link, false);
+
+                break;
+
+        case SD_NDISC_EVENT_ROUTER_ADVERTISMENT_PREFIX_EXPIRED:
+                if (!link->rtnl_extended_attrs)
+                        dhcp6_prefix_expired(link);
+
+                break;
+
+        default:
+                if (event < 0)
+                        log_link_warning_errno(link, event, "IPv6 Neighbor Discover error: %m");
+                else
+                        log_link_warning(link, "IPv6 Neighbor Discovery unknown event: %d", event);
+
+                break;
+        }
+}
+
+int ndisc_configure(Link *link) {
+        int r;
+
+        assert_return(link, -EINVAL);
+
+        r = sd_ndisc_new(&link->ndisc_router_discovery);
+        if (r < 0)
+                return r;
+
+        r = sd_ndisc_attach_event(link->ndisc_router_discovery, NULL, 0);
+        if (r < 0)
+                return r;
+
+        r = sd_ndisc_set_mac(link->ndisc_router_discovery, &link->mac);
+        if (r < 0)
+                return r;
+
+        r = sd_ndisc_set_index(link->ndisc_router_discovery, link->ifindex);
+        if (r < 0)
+                return r;
+
+        r = sd_ndisc_set_callback(link->ndisc_router_discovery,
+                                  ndisc_router_handler, link);
+
+        return r;
+}