#include <net/if.h>
-#include "networkd.h"
+#include "networkd-netdev.h"
+#include "networkd-netdev-bridge.h"
+#include "networkd-netdev-bond.h"
+#include "networkd-netdev-vlan.h"
+#include "networkd-netdev-macvlan.h"
+#include "networkd-netdev-vxlan.h"
+#include "networkd-netdev-tunnel.h"
+#include "networkd-netdev-veth.h"
+#include "networkd-netdev-dummy.h"
+#include "networkd-netdev-tuntap.h"
#include "network-internal.h"
#include "path-util.h"
#include "conf-files.h"
#include "list.h"
#include "siphash24.h"
+const NetDevVTable * const netdev_vtable[_NETDEV_KIND_MAX] = {
+ [NETDEV_KIND_BRIDGE] = &bridge_vtable,
+ [NETDEV_KIND_BOND] = &bond_vtable,
+ [NETDEV_KIND_VLAN] = &vlan_vtable,
+ [NETDEV_KIND_MACVLAN] = &macvlan_vtable,
+ [NETDEV_KIND_VXLAN] = &vxlan_vtable,
+ [NETDEV_KIND_IPIP] = &ipip_vtable,
+ [NETDEV_KIND_GRE] = &gre_vtable,
+ [NETDEV_KIND_SIT] = &sit_vtable,
+ [NETDEV_KIND_VTI] = &vti_vtable,
+ [NETDEV_KIND_VETH] = &veth_vtable,
+ [NETDEV_KIND_DUMMY] = &dummy_vtable,
+ [NETDEV_KIND_TUN] = &tun_vtable,
+ [NETDEV_KIND_TAP] = &tap_vtable,
+};
+
static const char* const netdev_kind_table[_NETDEV_KIND_MAX] = {
[NETDEV_KIND_BRIDGE] = "bridge",
[NETDEV_KIND_BOND] = "bond",
DEFINE_STRING_TABLE_LOOKUP(netdev_kind, NetDevKind);
DEFINE_CONFIG_PARSE_ENUM(config_parse_netdev_kind, netdev_kind, NetDevKind, "Failed to parse netdev kind");
+
static void netdev_cancel_callbacks(NetDev *netdev) {
_cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
- netdev_enslave_callback *callback;
+ netdev_join_callback *callback;
if (!netdev)
return;
assert(netdev->state == NETDEV_STATE_READY);
assert(netdev->manager);
assert(netdev->manager->rtnl);
+ assert(IN_SET(netdev->kind, NETDEV_KIND_BRIDGE, NETDEV_KIND_BOND));
assert(link);
assert(callback);
}
static int netdev_enter_ready(NetDev *netdev) {
- netdev_enslave_callback *callback, *callback_next;
+ netdev_join_callback *callback, *callback_next;
int r;
assert(netdev);
return 1;
}
-static int netdev_create(NetDev *netdev) {
- _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
- const char *kind;
+int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
int r;
assert(netdev);
- assert(netdev->ifname);
- assert(netdev->manager);
- assert(netdev->manager->rtnl);
-
- r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req, RTM_NEWLINK, 0);
- if (r < 0) {
- log_error_netdev(netdev,
- "Could not allocate RTM_NEWLINK message: %s",
- strerror(-r));
- return r;
- }
-
- r = sd_rtnl_message_append_string(req, IFLA_IFNAME, netdev->ifname);
- if (r < 0) {
- log_error_netdev(netdev,
- "Could not append IFLA_IFNAME attribute: %s",
- strerror(-r));
- return r;
- }
+ assert(IN_SET(netdev->kind, NETDEV_KIND_BRIDGE, NETDEV_KIND_BOND));
- if (netdev->mtu) {
- r = sd_rtnl_message_append_u32(req, IFLA_MTU, netdev->mtu);
- if (r < 0) {
- log_error_netdev(netdev,
- "Could not append IFLA_MTU attribute: %s",
- strerror(-r));
+ if (netdev->state == NETDEV_STATE_READY) {
+ r = netdev_enslave_ready(netdev, link, callback);
+ if (r < 0)
return r;
- }
- }
-
- if (netdev->mac) {
- r = sd_rtnl_message_append_ether_addr(req, 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(req, IFLA_LINKINFO);
- if (r < 0) {
- log_error_netdev(netdev,
- "Could not open IFLA_LINKINFO container: %s",
- strerror(-r));
- return r;
- }
-
- kind = netdev_kind_to_string(netdev->kind);
- if (!kind) {
- log_error_netdev(netdev, "Invalid kind");
- return -EINVAL;
- }
-
- r = sd_rtnl_message_open_container_union(req, IFLA_INFO_DATA, kind);
- if (r < 0) {
- log_error_netdev(netdev,
- "Could not open IFLA_INFO_DATA container: %s",
- strerror(-r));
- return r;
- }
+ } else {
+ /* the netdev is not yet read, save this request for when it is*/
+ netdev_join_callback *cb;
- r = sd_rtnl_message_close_container(req);
- if (r < 0) {
- log_error_netdev(netdev,
- "Could not close IFLA_INFO_DATA container %s",
- strerror(-r));
- return r;
- }
+ cb = new0(netdev_join_callback, 1);
+ if (!cb)
+ return log_oom();
- r = sd_rtnl_message_close_container(req);
- if (r < 0) {
- log_error_netdev(netdev,
- "Could not close IFLA_LINKINFO container %s",
- strerror(-r));
- return r;
- }
+ cb->callback = callback;
+ cb->link = link;
+ link_ref(link);
- r = sd_rtnl_call_async(netdev->manager->rtnl, req, &netdev_create_handler, netdev, 0, NULL);
- if (r < 0) {
- log_error_netdev(netdev,
- "Could not send rtnetlink message: %s", strerror(-r));
- return r;
+ LIST_PREPEND(callbacks, netdev->callbacks, cb);
}
- netdev_ref(netdev);
-
- log_debug_netdev(netdev, "creating netdev");
-
- netdev->state = NETDEV_STATE_CREATING;
-
return 0;
}
/* the callback must be called, possibly after a timeout, as otherwise the Link will hang */
-int netdev_enslave(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
+int netdev_join(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
int r;
- switch(netdev->kind) {
- case NETDEV_KIND_VLAN:
- return netdev_create_vlan(netdev, link, callback);
- case NETDEV_KIND_MACVLAN:
- return netdev_create_macvlan(netdev, link, callback);
- case NETDEV_KIND_VXLAN:
- return netdev_create_vxlan(netdev, link, callback);
- case NETDEV_KIND_IPIP:
- case NETDEV_KIND_GRE:
- case NETDEV_KIND_SIT:
- case NETDEV_KIND_VTI:
- return netdev_create_tunnel(netdev, link, callback);
- default:
- break;
- }
+ assert(netdev);
+ assert(netdev->manager);
+ assert(netdev->manager->rtnl);
+ assert(NETDEV_VTABLE(netdev));
- if (netdev->state == NETDEV_STATE_READY) {
- r = netdev_enslave_ready(netdev, link, callback);
- if (r < 0)
+ if (NETDEV_VTABLE(netdev)->fill_message_create_on_link) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
+
+ r = sd_rtnl_message_new_link(netdev->manager->rtnl, &req,
+ RTM_NEWLINK, 0);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not allocate RTM_SETLINK message: %s",
+ strerror(-r));
return r;
- } else {
- /* the netdev is not yet read, save this request for when it is*/
- netdev_enslave_callback *cb;
+ }
- cb = new0(netdev_enslave_callback, 1);
- if (!cb)
- return log_oom();
+ NETDEV_VTABLE(netdev)->fill_message_create_on_link(netdev, link, req);
- cb->callback = callback;
- cb->link = link;
- link_ref(link);
+ r = sd_rtnl_call_async(netdev->manager->rtnl, req, callback, link, 0, NULL);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not send rtnetlink message: %s", strerror(-r));
+ return r;
+ }
- LIST_PREPEND(callbacks, netdev->callbacks, cb);
- }
+ link_ref(link);
+ } else if (NETDEV_VTABLE(netdev)->enslave) {
+ return NETDEV_VTABLE(netdev)->enslave(netdev, link, callback);
+ } else
+ assert_not_reached("Joining link to netdev of invalid kind");
return 0;
}
#define HASH_KEY SD_ID128_MAKE(52,e1,45,bd,00,6f,29,96,21,c6,30,6d,83,71,04,48)
-static int netdev_get_mac(const char *ifname, struct ether_addr **ret) {
+int netdev_get_mac(const char *ifname, struct ether_addr **ret) {
_cleanup_free_ struct ether_addr *mac = NULL;
uint8_t result[8];
size_t l, sz;
assert(manager);
assert(filename);
- if (null_or_empty_path(filename)) {
- log_debug("skipping empty file: %s", filename);
- return 0;
- }
-
file = fopen(filename, "re");
if (!file) {
if (errno == ENOENT)
return -errno;
}
+ if (null_or_empty_fd(fileno(file))) {
+ log_debug("Skipping empty file: %s", filename);
+ return 0;
+ }
+
netdev = new0(NetDev, 1);
if (!netdev)
return log_oom();
netdev->state = _NETDEV_STATE_INVALID;
netdev->kind = _NETDEV_KIND_INVALID;
netdev->macvlan_mode = _NETDEV_MACVLAN_MODE_INVALID;
+ netdev->bond_mode = _NETDEV_BOND_MODE_INVALID;
netdev->vlanid = VLANID_MAX + 1;
netdev->vxlanid = VXLAN_VID_MAX + 1;
netdev->tunnel_pmtudisc = true;
netdev->learning = true;
r = config_parse(NULL, filename, file,
- "Match\0NetDev\0VLAN\0MACVLAN\0VXLAN\0Tunnel\0Peer\0Tun\0Tap\0",
- config_item_perf_lookup, (void*) network_netdev_gperf_lookup,
- false, false, netdev);
- if (r < 0) {
- log_warning("Could not parse config file %s: %s", filename, strerror(-r));
+ "Match\0NetDev\0VLAN\0MACVLAN\0VXLAN\0Tunnel\0Peer\0Tun\0Tap\0Bond\0",
+ config_item_perf_lookup, network_netdev_gperf_lookup,
+ false, false, true, netdev);
+ if (r < 0)
return r;
- }
- switch (netdev->kind) {
- case _NETDEV_KIND_INVALID:
- log_warning("NetDev without Kind configured in %s. Ignoring", filename);
+ /* skip out early if configuration does not match the environment */
+ if (net_match_config(NULL, NULL, NULL, NULL, NULL,
+ netdev->match_host, netdev->match_virt,
+ netdev->match_kernel, netdev->match_arch,
+ NULL, NULL, NULL, NULL, NULL, NULL) <= 0)
return 0;
- case NETDEV_KIND_VLAN:
- if (netdev->vlanid > VLANID_MAX) {
- log_warning("VLAN without valid Id configured in %s. Ignoring", filename);
- return 0;
- }
- break;
- case NETDEV_KIND_VXLAN:
- if (netdev->vxlanid > VXLAN_VID_MAX) {
- log_warning("VXLAN without valid Id configured in %s. Ignoring", filename);
- return 0;
- }
- break;
- case NETDEV_KIND_IPIP:
- case NETDEV_KIND_GRE:
- case NETDEV_KIND_SIT:
- case NETDEV_KIND_VTI:
- if (netdev->local.in.s_addr == INADDR_ANY) {
- log_warning("Tunnel without local address configured in %s. Ignoring", filename);
- return 0;
- }
- if (netdev->remote.in.s_addr == INADDR_ANY) {
- log_warning("Tunnel without remote address configured in %s. Ignoring", filename);
- return 0;
- }
- if (netdev->family != AF_INET) {
- log_warning("Tunnel with invalid address family configured in %s. Ignoring", filename);
+
+ if (!NETDEV_VTABLE(netdev)) {
+ log_warning("NetDev with invalid Kind configured in %s. Ignoring", filename);
+ return 0;
+ }
+
+ /* verify configuration */
+ if (NETDEV_VTABLE(netdev)->config_verify) {
+ r = NETDEV_VTABLE(netdev)->config_verify(netdev, filename);
+ if (r < 0)
return 0;
- }
- break;
- default:
- break;
}
if (!netdev->ifname) {
if (!netdev->filename)
return log_oom();
- if (net_match_config(NULL, NULL, NULL, NULL, NULL,
- netdev->match_host, netdev->match_virt,
- netdev->match_kernel, netdev->match_arch,
- NULL, NULL, NULL, NULL, NULL, NULL) <= 0)
- return 0;
-
if (!netdev->mac) {
r = netdev_get_mac(netdev->ifname, &netdev->mac);
if (r < 0) {
LIST_HEAD_INIT(netdev->callbacks);
- switch (netdev->kind) {
- case NETDEV_KIND_VETH:
- if (!netdev->ifname_peer) {
- log_warning("Veth NetDev without peer name configured "
- "in %s. Ignoring", filename);
- return 0;
- }
+ log_debug_netdev(netdev, "loaded %s", netdev_kind_to_string(netdev->kind));
- if (!netdev->mac) {
- r = netdev_get_mac(netdev->ifname_peer, &netdev->mac_peer);
- if (r < 0) {
- log_error("Failed to generate predictable MAC address for %s",
- netdev->ifname_peer);
- return r;
- }
- }
+ /* create netdev */
+ if (NETDEV_VTABLE(netdev)->fill_message_create) {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
- r = netdev_create_veth(netdev, netdev_create_handler);
- if (r < 0)
+ r = sd_rtnl_message_new_link(netdev->manager->rtnl, &m, RTM_NEWLINK, 0);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not allocate RTM_NEWLINK message: %s",
+ strerror(-r));
return r;
+ }
- break;
- case NETDEV_KIND_DUMMY:
- r = netdev_create_dummy(netdev, netdev_create_handler);
+ r = NETDEV_VTABLE(netdev)->fill_message_create(netdev, m);
if (r < 0)
return r;
- break;
- case NETDEV_KIND_BRIDGE:
- case NETDEV_KIND_BOND:
- r = netdev_create(netdev);
- if (r < 0)
+ r = sd_rtnl_call_async(netdev->manager->rtnl, m, netdev_create_handler, netdev, 0, NULL);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not send rtnetlink message: %s", strerror(-r));
return r;
- break;
+ }
+
+ netdev_ref(netdev);
- case NETDEV_KIND_TUN:
- case NETDEV_KIND_TAP:
- r = netdev_create_tuntap(netdev);
+ log_debug_netdev(netdev, "creating");
+
+ netdev->state = NETDEV_STATE_CREATING;
+ } else if (NETDEV_VTABLE(netdev)->create) {
+ r = NETDEV_VTABLE(netdev)->create(netdev);
if (r < 0)
return r;
- break;
-
- default:
- break;
}
- log_debug_netdev(netdev, "loaded %s", netdev_kind_to_string(netdev->kind));
-
netdev = NULL;
return 0;