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Diffstat (limited to 'src/network/networkd-netdev-tunnel.c')
-rw-r--r--src/network/networkd-netdev-tunnel.c536
1 files changed, 536 insertions, 0 deletions
diff --git a/src/network/networkd-netdev-tunnel.c b/src/network/networkd-netdev-tunnel.c
new file mode 100644
index 0000000000..8acb74688d
--- /dev/null
+++ b/src/network/networkd-netdev-tunnel.c
@@ -0,0 +1,536 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright 2014 Susant Sahani <susant@redhat.com>
+
+ 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 <arpa/inet.h>
+#include <net/if.h>
+#include <linux/ip.h>
+#include <linux/if_tunnel.h>
+
+#include "sd-rtnl.h"
+#include "networkd-netdev-tunnel.h"
+#include "network-internal.h"
+#include "util.h"
+#include "missing.h"
+#include "conf-parser.h"
+
+static int netdev_ipip_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) {
+ int r;
+
+ assert(netdev);
+ assert(netdev->kind == NETDEV_KIND_IPIP);
+ assert(netdev->ifname);
+ assert(netdev->manager);
+ assert(netdev->manager->rtnl);
+ assert(link);
+ assert(m);
+ assert(netdev->family == AF_INET);
+
+ r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IFNAME, attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ if(netdev->mtu) {
+ r = sd_rtnl_message_append_u32(m, IFLA_MTU, netdev->mtu);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_MTU attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ if (netdev->mac) {
+ r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Colud not append IFLA_ADDRESS attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_LINKINFO attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA,
+ netdev_kind_to_string(netdev->kind));
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_INFO_DATA attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_u32(m, IFLA_IPTUN_LINK, link->ifindex);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IPTUN_LINK attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_in_addr(m, IFLA_IPTUN_LOCAL, &netdev->local.in);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IPTUN_LOCAL attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_in_addr(m, IFLA_IPTUN_REMOTE, &netdev->remote.in);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IPTUN_REMOTE attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_u8(m, IFLA_IPTUN_TTL, netdev->ttl);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IPTUN_TTL attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_close_container(m);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_INFO_DATA attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_close_container(m);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_LINKINFO attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ return r;
+}
+
+static int netdev_sit_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) {
+ int r;
+
+ assert(netdev);
+ assert(netdev->kind == NETDEV_KIND_SIT);
+ assert(netdev->ifname);
+ assert(netdev->manager);
+ assert(netdev->manager->rtnl);
+ assert(link);
+ assert(m);
+ assert(netdev->family == AF_INET);
+
+ r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IFNAME, attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ if(netdev->mtu) {
+ r = sd_rtnl_message_append_u32(m, IFLA_MTU, netdev->mtu);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_MTU attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ if (netdev->mac) {
+ r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Colud not append IFLA_ADDRESS attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_LINKINFO attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA,
+ netdev_kind_to_string(netdev->kind));
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_INFO_DATA attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_u32(m, IFLA_IPTUN_LINK, link->ifindex);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IPTUN_LINK attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_in_addr(m, IFLA_IPTUN_LOCAL, &netdev->local.in);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IPTUN_LOCAL attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_in_addr(m, IFLA_IPTUN_REMOTE, &netdev->remote.in);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IPTUN_REMOTE attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_u8(m, IFLA_IPTUN_TTL, netdev->ttl);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IPTUN_TTL attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_close_container(m);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_INFO_DATA attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_close_container(m);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_LINKINFO attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ return r;
+}
+
+static int netdev_gre_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) {
+ int r;
+
+ assert(netdev);
+ assert(netdev->kind == NETDEV_KIND_GRE);
+ assert(netdev->ifname);
+ assert(netdev->manager);
+ assert(netdev->manager->rtnl);
+ assert(link);
+ assert(m);
+ assert(netdev->family == AF_INET);
+
+ r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IFNAME, attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ if(netdev->mtu) {
+ r = sd_rtnl_message_append_u32(m, IFLA_MTU, netdev->mtu);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_MTU attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ if (netdev->mac) {
+ r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Colud not append IFLA_ADDRESS attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_LINKINFO attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA,
+ netdev_kind_to_string(netdev->kind));
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_INFO_DATA attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_u32(m, IFLA_GRE_LINK, link->ifindex);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_GRE_LINK attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_in_addr(m, IFLA_GRE_LOCAL, &netdev->local.in);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_GRE_LOCAL attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_in_addr(m, IFLA_GRE_REMOTE, &netdev->remote.in);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_GRE_REMOTE attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_u8(m, IFLA_GRE_TTL, netdev->ttl);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_GRE_TTL attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_u8(m, IFLA_GRE_TOS, netdev->tos);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_GRE_TOS attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_close_container(m);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_INFO_DATA attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_close_container(m);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_LINKINFO attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ return r;
+}
+
+static int netdev_vti_fill_message_create(NetDev *netdev, Link *link, sd_rtnl_message *m) {
+ int r;
+
+ assert(netdev);
+ assert(netdev->kind == NETDEV_KIND_VTI);
+ assert(netdev->ifname);
+ assert(netdev->manager);
+ assert(netdev->manager->rtnl);
+ assert(link);
+ assert(m);
+ assert(netdev->family == AF_INET);
+
+ r = sd_rtnl_message_append_string(m, IFLA_IFNAME, netdev->ifname);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IFNAME, attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ if(netdev->mtu) {
+ r = sd_rtnl_message_append_u32(m, IFLA_MTU, netdev->mtu);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_MTU attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ if (netdev->mac) {
+ r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Colud not append IFLA_ADDRESS attribute: %s",
+ strerror(-r));
+ return r;
+ }
+ }
+
+ r = sd_rtnl_message_open_container(m, IFLA_LINKINFO);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_LINKINFO attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_open_container_union(m, IFLA_INFO_DATA,
+ netdev_kind_to_string(netdev->kind));
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_INFO_DATA attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_u32(m, IFLA_VTI_LINK, link->ifindex);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IPTUN_LINK attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_in_addr(m, IFLA_VTI_LOCAL, &netdev->local.in);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IPTUN_LOCAL attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_append_in_addr(m, IFLA_VTI_REMOTE, &netdev->remote.in);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_IPTUN_REMOTE attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_close_container(m);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_INFO_DATA attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ r = sd_rtnl_message_close_container(m);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_LINKINFO attribute: %s",
+ strerror(-r));
+ return r;
+ }
+
+ return r;
+}
+
+static int netdev_tunnel_verify(NetDev *netdev, const char *filename) {
+ assert(netdev);
+ assert(filename);
+
+ if (netdev->local.in.s_addr == INADDR_ANY) {
+ log_warning("Tunnel without local address configured in %s. Ignoring", filename);
+ return -EINVAL;
+ }
+
+ if (netdev->remote.in.s_addr == INADDR_ANY) {
+ log_warning("Tunnel without remote address configured in %s. Ignoring", filename);
+ return -EINVAL;
+ }
+
+ if (netdev->family != AF_INET) {
+ log_warning("Tunnel with invalid address family configured in %s. Ignoring", filename);
+ return -EINVAL;
+ }
+
+ return 0;
+}
+
+int config_parse_tunnel_address(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) {
+ NetDev *n = userdata;
+ union in_addr_union *addr = data;
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+ assert(data);
+
+ r = net_parse_inaddr(rvalue, &n->family, addr);
+ if (r < 0) {
+ log_syntax(unit, LOG_ERR, filename, line, EINVAL,
+ "Tunnel address is invalid, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+
+ return 0;
+}
+
+const NetDevVTable ipip_vtable = {
+ .fill_message_create_on_link = netdev_ipip_fill_message_create,
+ .config_verify = netdev_tunnel_verify,
+};
+
+const NetDevVTable sit_vtable = {
+ .fill_message_create_on_link = netdev_sit_fill_message_create,
+ .config_verify = netdev_tunnel_verify,
+};
+
+const NetDevVTable vti_vtable = {
+ .fill_message_create_on_link = netdev_vti_fill_message_create,
+ .config_verify = netdev_tunnel_verify,
+};
+
+const NetDevVTable gre_vtable = {
+ .fill_message_create_on_link = netdev_gre_fill_message_create,
+ .config_verify = netdev_tunnel_verify,
+};
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