#include <net/if.h>
-#include "networkd.h"
+#include "networkd-netdev.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;
free(netdev->description);
free(netdev->ifname);
- free(netdev->ifname_peer);
free(netdev->mac);
- free(netdev->mac_peer);
- free(netdev->user_name);
- free(netdev->group_name);
condition_free_list(netdev->match_host);
condition_free_list(netdev->match_virt);
condition_free_list(netdev->match_kernel);
condition_free_list(netdev->match_arch);
+ if (NETDEV_VTABLE(netdev) &&
+ NETDEV_VTABLE(netdev)->done)
+ NETDEV_VTABLE(netdev)->done(netdev);
+
free(netdev);
}
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;
}
- return 1;
-}
-
-static int netdev_create(NetDev *netdev) {
- _cleanup_rtnl_message_unref_ sd_rtnl_message *req = NULL;
- const char *kind;
- 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;
- }
-
- 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));
- 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;
- }
-
- 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;
- }
-
- 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;
- }
-
- 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;
- }
-
- netdev_ref(netdev);
+ log_debug_netdev(netdev, "created");
- log_debug_netdev(netdev, "creating netdev");
-
- netdev->state = NETDEV_STATE_CREATING;
-
- return 0;
+ return 1;
}
-/* 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 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(IN_SET(netdev->kind, NETDEV_KIND_BRIDGE, NETDEV_KIND_BOND));
if (netdev->state == NETDEV_STATE_READY) {
r = netdev_enslave_ready(netdev, link, callback);
return r;
} else {
/* the netdev is not yet read, save this request for when it is*/
- netdev_enslave_callback *cb;
+ netdev_join_callback *cb;
- cb = new0(netdev_enslave_callback, 1);
+ cb = new0(netdev_join_callback, 1);
if (!cb)
return log_oom();
link_ref(link);
LIST_PREPEND(callbacks, netdev->callbacks, cb);
+
+ log_debug_netdev(netdev, "will enslave '%s', when reday",
+ link->ifname);
}
return 0;
int netdev_set_ifindex(NetDev *netdev, sd_rtnl_message *message) {
uint16_t type;
const char *kind;
- char *received_kind;
- char *received_name;
+ const char *received_kind;
+ const char *received_name;
int r, ifindex;
assert(netdev);
#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;
return 0;
}
+static int netdev_create(NetDev *netdev, Link *link) {
+ int r;
+
+ assert(netdev);
+
+ /* create netdev */
+ if (NETDEV_VTABLE(netdev)->create) {
+ r = NETDEV_VTABLE(netdev)->create(netdev);
+ if (r < 0)
+ return r;
+
+ log_debug_netdev(netdev, "created");
+ } else {
+ _cleanup_rtnl_message_unref_ sd_rtnl_message *m = NULL;
+
+ 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;
+ }
+
+ 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->mac) {
+ r = sd_rtnl_message_append_ether_addr(m, IFLA_ADDRESS, netdev->mac);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Could not append IFLA_ADDRESS 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 (link) {
+ r = sd_rtnl_message_append_u32(m, IFLA_LINK, link->ifindex);
+ if (r < 0) {
+ log_error_netdev(netdev,
+ "Colud not append IFLA_LINK 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;
+ }
+
+ if (NETDEV_VTABLE(netdev)->fill_message_create) {
+ r = NETDEV_VTABLE(netdev)->fill_message_create(netdev, link, m);
+ if (r < 0)
+ 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;
+ }
+
+ 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;
+ }
+
+
+ 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;
+ }
+
+ netdev_ref(netdev);
+
+ netdev->state = NETDEV_STATE_CREATING;
+
+ log_debug_netdev(netdev, "creating");
+ }
+
+ return 0;
+}
+
+/* the callback must be called, possibly after a timeout, as otherwise the Link will hang */
+int netdev_join(NetDev *netdev, Link *link, sd_rtnl_message_handler_t callback) {
+ int r;
+
+ assert(netdev);
+ assert(netdev->manager);
+ assert(netdev->manager->rtnl);
+ assert(NETDEV_VTABLE(netdev));
+
+ switch (NETDEV_VTABLE(netdev)->create_type) {
+ case NETDEV_CREATE_MASTER:
+ r = netdev_enslave(netdev, link, callback);
+ if (r < 0)
+ return r;
+
+ break;
+ case NETDEV_CREATE_STACKED:
+ r = netdev_create(netdev, link);
+ if (r < 0)
+ return r;
+
+ break;
+ default:
+ assert_not_reached("Can not join independent netdev");
+ }
+
+ return 0;
+}
+
static int netdev_load_one(Manager *manager, const char *filename) {
_cleanup_netdev_unref_ NetDev *netdev = NULL;
+ _cleanup_free_ NetDev *netdev_raw = NULL;
_cleanup_fclose_ FILE *file = NULL;
int r;
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;
}
- netdev = new0(NetDev, 1);
- if (!netdev)
+ if (null_or_empty_fd(fileno(file))) {
+ log_debug("Skipping empty file: %s", filename);
+ return 0;
+ }
+
+ netdev_raw = new0(NetDev, 1);
+ if (!netdev_raw)
return log_oom();
- netdev->n_ref = 1;
- netdev->manager = manager;
- netdev->state = _NETDEV_STATE_INVALID;
- netdev->kind = _NETDEV_KIND_INVALID;
- netdev->macvlan_mode = _NETDEV_MACVLAN_MODE_INVALID;
- netdev->vlanid = VLANID_MAX + 1;
- netdev->vxlanid = VXLAN_VID_MAX + 1;
- netdev->tunnel_pmtudisc = true;
- netdev->learning = true;
+ netdev_raw->kind = _NETDEV_KIND_INVALID;
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\0",
+ config_item_perf_lookup, network_netdev_gperf_lookup,
+ true, false, true, netdev_raw);
+ if (r < 0)
return r;
- }
- switch (netdev->kind) {
- case _NETDEV_KIND_INVALID:
- log_warning("NetDev without Kind configured in %s. Ignoring", filename);
- 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);
- return 0;
- }
- break;
- default:
- break;
- }
+ r = fseek(file, 0, SEEK_SET);
+ if (r < 0)
+ return -errno;
- if (!netdev->ifname) {
- log_warning("NetDev without Name 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_raw->match_host, netdev_raw->match_virt,
+ netdev_raw->match_kernel, netdev_raw->match_arch,
+ NULL, NULL, NULL, NULL, NULL, NULL) <= 0)
return 0;
- }
- if (netdev->kind != NETDEV_KIND_VLAN && netdev->vlanid <= VLANID_MAX) {
- log_warning("VLAN Id configured for a %s in %s. Ignoring",
- netdev_kind_to_string(netdev->kind), filename);
+ if (!NETDEV_VTABLE(netdev_raw)) {
+ log_warning("NetDev with invalid Kind configured in %s. Ignoring", filename);
return 0;
}
- if (netdev->kind != NETDEV_KIND_VXLAN && netdev->vxlanid <= VXLAN_VID_MAX) {
- log_warning("VXLAN Id configured for a %s in %s. Ignoring",
- netdev_kind_to_string(netdev->kind), filename);
+ if (!netdev_raw->ifname) {
+ log_warning("NetDev without Name configured in %s. Ignoring", filename);
return 0;
}
- if (netdev->kind != NETDEV_KIND_MACVLAN &&
- netdev->macvlan_mode != _NETDEV_MACVLAN_MODE_INVALID) {
- log_warning("MACVLAN Mode configured for a %s in %s. Ignoring",
- netdev_kind_to_string(netdev->kind), filename);
- return 0;
+ netdev = malloc0(NETDEV_VTABLE(netdev_raw)->object_size);
+ if (!netdev)
+ return log_oom();
+
+ netdev->n_ref = 1;
+ netdev->manager = manager;
+ netdev->state = _NETDEV_STATE_INVALID;
+ netdev->kind = netdev_raw->kind;
+ netdev->ifname = netdev_raw->ifname;
+
+ if (NETDEV_VTABLE(netdev)->init)
+ NETDEV_VTABLE(netdev)->init(netdev);
+
+ r = config_parse(NULL, filename, file,
+ NETDEV_VTABLE(netdev)->sections,
+ config_item_perf_lookup, network_netdev_gperf_lookup,
+ false, false, false, netdev);
+ if (r < 0)
+ return r;
+
+ /* verify configuration */
+ if (NETDEV_VTABLE(netdev)->config_verify) {
+ r = NETDEV_VTABLE(netdev)->config_verify(netdev, filename);
+ if (r < 0)
+ return 0;
}
netdev->filename = strdup(filename);
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;
- }
-
- 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;
- }
- }
-
- r = netdev_create_veth(netdev, netdev_create_handler);
- if (r < 0)
- return r;
+ log_debug_netdev(netdev, "loaded %s", netdev_kind_to_string(netdev->kind));
- break;
- case NETDEV_KIND_DUMMY:
- r = netdev_create_dummy(netdev, netdev_create_handler);
+ switch (NETDEV_VTABLE(netdev)->create_type) {
+ case NETDEV_CREATE_MASTER:
+ case NETDEV_CREATE_INDEPENDENT:
+ r = netdev_create(netdev, NULL);
if (r < 0)
return r;
break;
- case NETDEV_KIND_BRIDGE:
- case NETDEV_KIND_BOND:
- r = netdev_create(netdev);
- if (r < 0)
- return r;
- break;
-
- case NETDEV_KIND_TUN:
- case NETDEV_KIND_TAP:
- r = netdev_create_tuntap(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;