diff options
Diffstat (limited to 'src/network/networkd-link.c')
| -rw-r--r-- | src/network/networkd-link.c | 728 |
1 files changed, 453 insertions, 275 deletions
diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c index 5dd14b1104..46979ffa12 100644 --- a/src/network/networkd-link.c +++ b/src/network/networkd-link.c @@ -23,18 +23,23 @@ #include <linux/if.h> #include <unistd.h> -#include "util.h" -#include "virt.h" -#include "fileio.h" -#include "socket-util.h" +#include "alloc-util.h" #include "bus-util.h" -#include "udev-util.h" -#include "netlink-util.h" #include "dhcp-lease-internal.h" +#include "event-util.h" +#include "fd-util.h" +#include "fileio.h" +#include "netlink-util.h" #include "network-internal.h" - #include "networkd-link.h" #include "networkd-netdev.h" +#include "set.h" +#include "socket-util.h" +#include "stdio-util.h" +#include "string-table.h" +#include "udev-util.h" +#include "util.h" +#include "virt.h" bool link_dhcp6_enabled(Link *link) { if (link->flags & IFF_LOOPBACK) @@ -129,6 +134,57 @@ static IPv6PrivacyExtensions link_ipv6_privacy_extensions(Link *link) { return link->network->ipv6_privacy_extensions; } +void link_update_operstate(Link *link) { + LinkOperationalState operstate; + assert(link); + + if (link->kernel_operstate == IF_OPER_DORMANT) + operstate = LINK_OPERSTATE_DORMANT; + else if (link_has_carrier(link)) { + Address *address; + uint8_t scope = RT_SCOPE_NOWHERE; + Iterator i; + + /* if we have carrier, check what addresses we have */ + SET_FOREACH(address, link->addresses, i) { + if (!address_is_ready(address)) + continue; + + if (address->scope < scope) + scope = address->scope; + } + + /* for operstate we also take foreign addresses into account */ + SET_FOREACH(address, link->addresses_foreign, i) { + if (!address_is_ready(address)) + continue; + + if (address->scope < scope) + scope = address->scope; + } + + if (scope < RT_SCOPE_SITE) + /* universally accessible addresses found */ + operstate = LINK_OPERSTATE_ROUTABLE; + else if (scope < RT_SCOPE_HOST) + /* only link or site local addresses found */ + operstate = LINK_OPERSTATE_DEGRADED; + else + /* no useful addresses found */ + operstate = LINK_OPERSTATE_CARRIER; + } else if (link->flags & IFF_UP) + operstate = LINK_OPERSTATE_NO_CARRIER; + else + operstate = LINK_OPERSTATE_OFF; + + if (link->operstate != operstate) { + link->operstate = operstate; + link_send_changed(link, "OperationalState", NULL); + link_dirty(link); + manager_dirty(link->manager); + } +} + #define FLAG_STRING(string, flag, old, new) \ (((old ^ new) & flag) \ ? ((old & flag) ? (" -" string) : (" +" string)) \ @@ -201,7 +257,7 @@ static int link_update_flags(Link *link, sd_netlink_message *m) { link->flags = flags; link->kernel_operstate = operstate; - link_save(link); + link_update_operstate(link); return 0; } @@ -291,10 +347,15 @@ static void link_free(Link *link) { if (!link) return; - while ((address = link->addresses)) { - LIST_REMOVE(addresses, link->addresses, address); - address_free(address); - } + while (!set_isempty(link->addresses)) + address_free(set_first(link->addresses)); + + while (!set_isempty(link->addresses_foreign)) + address_free(set_first(link->addresses_foreign)); + + link->addresses = set_free(link->addresses); + + link->addresses_foreign = set_free(link->addresses_foreign); while ((address = link->pool_addresses)) { LIST_REMOVE(addresses, link->pool_addresses, address); @@ -313,13 +374,14 @@ static void link_free(Link *link) { sd_ipv4ll_unref(link->ipv4ll); sd_dhcp6_client_unref(link->dhcp6_client); - sd_icmp6_nd_unref(link->icmp6_router_discovery); + sd_ndisc_unref(link->ndisc_router_discovery); if (link->manager) hashmap_remove(link->manager->links, INT_TO_PTR(link->ifindex)); free(link->ifname); + (void)unlink(link->state_file); free(link->state_file); udev_device_unref(link->udev_device); @@ -336,15 +398,28 @@ static void link_free(Link *link) { } Link *link_unref(Link *link) { - if (link && (-- link->n_ref <= 0)) - link_free(link); + if (!link) + return NULL; + + assert(link->n_ref > 0); + + link->n_ref --; + + if (link->n_ref > 0) + return NULL; + + link_free(link); return NULL; } Link *link_ref(Link *link) { - if (link) - assert_se(++ link->n_ref >= 2); + if (!link) + return NULL; + + assert(link->n_ref > 0); + + link->n_ref ++; return link; } @@ -385,7 +460,7 @@ static void link_enter_unmanaged(Link *link) { link_set_state(link, LINK_STATE_UNMANAGED); - link_save(link); + link_dirty(link); } static int link_stop_clients(Link *link) { @@ -410,16 +485,16 @@ static int link_stop_clients(Link *link) { r = log_link_warning_errno(link, r, "Could not stop IPv4 link-local: %m"); } - if(link->icmp6_router_discovery) { + if(link->ndisc_router_discovery) { if (link->dhcp6_client) { k = sd_dhcp6_client_stop(link->dhcp6_client); if (k < 0) r = log_link_warning_errno(link, r, "Could not stop DHCPv6 client: %m"); } - k = sd_icmp6_nd_stop(link->icmp6_router_discovery); + k = sd_ndisc_stop(link->ndisc_router_discovery); if (k < 0) - r = log_link_warning_errno(link, r, "Could not stop ICMPv6 router discovery: %m"); + r = log_link_warning_errno(link, r, "Could not stop IPv6 Router Discovery: %m"); } if (link->lldp) { @@ -443,7 +518,7 @@ void link_enter_failed(Link *link) { link_stop_clients(link); - link_save(link); + link_dirty(link); } static Address* link_find_dhcp_server_address(Link *link) { @@ -484,14 +559,19 @@ static int link_enter_configured(Link *link) { link_set_state(link, LINK_STATE_CONFIGURED); - link_save(link); + link_dirty(link); return 0; } -void link_client_handler(Link *link) { +void link_check_ready(Link *link) { + Address *a; + Iterator i; + assert(link); - assert(link->network); + + if (!link->network) + return; if (!link->static_configured) return; @@ -501,12 +581,18 @@ void link_client_handler(Link *link) { !link->ipv4ll_route) return; - if (link_dhcp4_enabled(link) && !link->dhcp4_configured) - return; - - if (link_dhcp6_enabled(link) && !link->dhcp6_configured) + if ((link_dhcp4_enabled(link) && !link_dhcp6_enabled(link) && + !link->dhcp4_configured) || + (link_dhcp6_enabled(link) && !link_dhcp4_enabled(link) && + !link->dhcp6_configured) || + (link_dhcp4_enabled(link) && link_dhcp6_enabled(link) && + !link->dhcp4_configured && !link->dhcp6_configured)) return; + SET_FOREACH(a, link->addresses, i) + if (!address_is_ready(a)) + return; + if (link->state != LINK_STATE_CONFIGURED) link_enter_configured(link); @@ -529,12 +615,12 @@ static int route_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata r = sd_netlink_message_get_errno(m); if (r < 0 && r != -EEXIST) - log_link_warning_errno(link, r, "%-*s: could not set route: %m", IFNAMSIZ, link->ifname); + log_link_warning_errno(link, r, "Could not set route: %m"); if (link->link_messages == 0) { log_link_debug(link, "Routes set"); link->static_configured = true; - link_client_handler(link); + link_check_ready(link); } return 1; @@ -563,14 +649,14 @@ static int link_enter_set_routes(Link *link) { if (link->link_messages == 0) { link->static_configured = true; - link_client_handler(link); + link_check_ready(link); } else log_link_debug(link, "Setting routes"); return 0; } -int link_route_drop_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { +int link_route_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { _cleanup_link_unref_ Link *link = userdata; int r; @@ -583,7 +669,7 @@ int link_route_drop_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userd r = sd_netlink_message_get_errno(m); if (r < 0 && r != -ESRCH) - log_link_warning_errno(link, r, "%-*s: could not drop route: %m", IFNAMSIZ, link->ifname); + log_link_warning_errno(link, r, "Could not drop route: %m"); return 1; } @@ -607,9 +693,9 @@ static int address_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userda r = sd_netlink_message_get_errno(m); if (r < 0 && r != -EEXIST) - log_link_warning_errno(link, r, "%-*s: could not set address: %m", IFNAMSIZ, link->ifname); + log_link_warning_errno(link, r, "could not set address: %m"); else if (r >= 0) - link_rtnl_process_address(rtnl, m, link->manager); + manager_rtnl_process_address(rtnl, m, link->manager); if (link->link_messages == 0) { log_link_debug(link, "Addresses set"); @@ -720,7 +806,7 @@ static int link_enter_set_addresses(Link *link) { link_set_state(link, LINK_STATE_SETTING_ADDRESSES); LIST_FOREACH(addresses, ad, link->network->static_addresses) { - r = address_configure(ad, link, &address_handler); + r = address_configure(ad, link, &address_handler, false); if (r < 0) { log_link_warning_errno(link, r, "Could not set addresses: %m"); link_enter_failed(link); @@ -852,7 +938,7 @@ static int link_enter_set_addresses(Link *link) { return 0; } -int link_address_drop_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { +int link_address_remove_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userdata) { _cleanup_link_unref_ Link *link = userdata; int r; @@ -865,7 +951,7 @@ int link_address_drop_handler(sd_netlink *rtnl, sd_netlink_message *m, void *use r = sd_netlink_message_get_errno(m); if (r < 0 && r != -EADDRNOTAVAIL) - log_link_warning_errno(link, r, "%-*s: could not drop address: %m", IFNAMSIZ, link->ifname); + log_link_warning_errno(link, r, "Could not drop address: %m"); return 1; } @@ -1017,7 +1103,7 @@ static int set_mtu_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userda r = sd_netlink_message_get_errno(m); if (r < 0) - log_link_warning_errno(link, r, "%-*s: could not set MTU: %m", IFNAMSIZ, link->ifname); + log_link_warning_errno(link, r, "Could not set MTU: %m"); return 1; } @@ -1156,13 +1242,13 @@ static int link_acquire_conf(Link *link) { } if (link_dhcp6_enabled(link)) { - assert(link->icmp6_router_discovery); + assert(link->ndisc_router_discovery); log_link_debug(link, "Discovering IPv6 routers"); - r = sd_icmp6_router_solicitation_start(link->icmp6_router_discovery); + r = sd_ndisc_router_discovery_start(link->ndisc_router_discovery); if (r < 0) - return log_link_warning_errno(link, r, "Could not start IPv6 router discovery: %m"); + return log_link_warning_errno(link, r, "Could not start IPv6 Router Discovery: %m"); } if (link_lldp_enabled(link)) { @@ -1205,7 +1291,7 @@ static int link_up_handler(sd_netlink *rtnl, sd_netlink_message *m, void *userda if (r < 0) /* we warn but don't fail the link, as it may be brought up later */ - log_link_warning_errno(link, r, "%-*s: could not bring up interface: %m", IFNAMSIZ, link->ifname); + log_link_warning_errno(link, r, "Could not bring up interface: %m"); return 1; } @@ -1292,7 +1378,7 @@ static int link_down_handler(sd_netlink *rtnl, sd_netlink_message *m, void *user r = sd_netlink_message_get_errno(m); if (r < 0) - log_link_warning_errno(link, r, "%-*s: could not bring down interface: %m", IFNAMSIZ, link->ifname); + log_link_warning_errno(link, r, "Could not bring down interface: %m"); return 1; } @@ -1430,14 +1516,14 @@ static int link_new_bound_by_list(Link *link) { } if (list_updated) - link_save(link); + link_dirty(link); HASHMAP_FOREACH (carrier, link->bound_by_links, i) { r = link_put_carrier(carrier, link, &carrier->bound_to_links); if (r < 0) return r; - link_save(carrier); + link_dirty(carrier); } return 0; @@ -1472,14 +1558,14 @@ static int link_new_bound_to_list(Link *link) { } if (list_updated) - link_save(link); + link_dirty(link); HASHMAP_FOREACH (carrier, link->bound_to_links, i) { r = link_put_carrier(carrier, link, &carrier->bound_by_links); if (r < 0) return r; - link_save(carrier); + link_dirty(carrier); } return 0; @@ -1515,7 +1601,7 @@ static void link_free_bound_to_list(Link *link) { hashmap_remove(link->bound_to_links, INT_TO_PTR(bound_to->ifindex)); if (hashmap_remove(bound_to->bound_by_links, INT_TO_PTR(link->ifindex))) - link_save(bound_to); + link_dirty(bound_to); } return; @@ -1529,7 +1615,7 @@ static void link_free_bound_by_list(Link *link) { hashmap_remove(link->bound_by_links, INT_TO_PTR(bound_by->ifindex)); if (hashmap_remove(bound_by->bound_to_links, INT_TO_PTR(link->ifindex))) { - link_save(bound_by); + link_dirty(bound_by); link_handle_bound_to_list(bound_by); } } @@ -1553,7 +1639,7 @@ static void link_free_carrier_maps(Link *link) { } if (list_updated) - link_save(link); + link_dirty(link); return; } @@ -1568,6 +1654,7 @@ void link_drop(Link *link) { log_link_debug(link, "Link removed"); + (void)unlink(link->state_file); link_unref(link); return; @@ -1614,7 +1701,7 @@ static int netdev_join_handler(sd_netlink *rtnl, sd_netlink_message *m, void *us r = sd_netlink_message_get_errno(m); if (r < 0 && r != -EEXIST) { - log_link_error_errno(link, r, "%-*s: could not join netdev: %m", IFNAMSIZ, link->ifname); + log_link_error_errno(link, r, "Could not join netdev: %m"); link_enter_failed(link); return 1; } else @@ -1637,7 +1724,7 @@ static int link_enter_join_netdev(Link *link) { link_set_state(link, LINK_STATE_ENSLAVING); - link_save(link); + link_dirty(link); if (!link->network->bridge && !link->network->bond && @@ -1810,16 +1897,16 @@ static int link_set_ipv6_accept_ra(Link *link) { * disabled if local forwarding is enabled). * If set, ignore or enforce RA independent of local forwarding state. */ - if (link->network->ipv6_accept_ra < 0) { + if (link->network->ipv6_accept_ra < 0) /* default to accept RA if ip_forward is disabled and ignore RA if ip_forward is enabled */ v = "1"; - } else if (link->network->ipv6_accept_ra > 0) { + else if (link->network->ipv6_accept_ra > 0) /* "2" means accept RA even if ip_forward is enabled */ v = "2"; - } else { + else /* "0" means ignore RA */ v = "0"; - } + p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/accept_ra"); r = write_string_file(p, v, 0); @@ -1834,6 +1921,37 @@ static int link_set_ipv6_accept_ra(Link *link) { return 0; } +static int link_set_ipv6_dad_transmits(Link *link) { + char buf[DECIMAL_STR_MAX(unsigned) + 1]; + const char *p = NULL; + int r; + + /* Make this a NOP if IPv6 is not available */ + if (!socket_ipv6_is_supported()) + return 0; + + if (link->flags & IFF_LOOPBACK) + return 0; + + if (link->network->ipv6_dad_transmits < 0) + return 0; + + p = strjoina("/proc/sys/net/ipv6/conf/", link->ifname, "/dad_transmits"); + + xsprintf(buf, "%u", link->network->ipv6_dad_transmits); + + r = write_string_file(p, buf, 0); + if (r < 0) { + /* If the right value is set anyway, don't complain */ + if (verify_one_line_file(p, buf) > 0) + return 0; + + log_link_warning_errno(link, r, "Cannot set IPv6 dad transmits for interface: %m"); + } + + return 0; +} + static int link_configure(Link *link) { int r; @@ -1861,6 +1979,10 @@ static int link_configure(Link *link) { if (r < 0) return r; + r = link_set_ipv6_dad_transmits(link); + if (r < 0) + return r; + if (link_ipv4ll_enabled(link)) { r = ipv4ll_configure(link); if (r < 0) @@ -1884,7 +2006,7 @@ static int link_configure(Link *link) { } if (link_dhcp6_enabled(link)) { - r = icmp6_configure(link); + r = ndisc_configure(link); if (r < 0) return r; } @@ -1936,28 +2058,30 @@ static int link_initialized_and_synced(sd_netlink *rtnl, sd_netlink_message *m, if (r < 0) return r; - r = network_get(link->manager, link->udev_device, link->ifname, - &link->mac, &network); - if (r == -ENOENT) { - link_enter_unmanaged(link); - return 1; - } else if (r < 0) - return r; + if (!link->network) { + r = network_get(link->manager, link->udev_device, link->ifname, + &link->mac, &network); + if (r == -ENOENT) { + link_enter_unmanaged(link); + return 1; + } else if (r < 0) + return r; - if (link->flags & IFF_LOOPBACK) { - if (network->link_local != ADDRESS_FAMILY_NO) - log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); + if (link->flags & IFF_LOOPBACK) { + if (network->link_local != ADDRESS_FAMILY_NO) + log_link_debug(link, "Ignoring link-local autoconfiguration for loopback link"); - if (network->dhcp != ADDRESS_FAMILY_NO) - log_link_debug(link, "Ignoring DHCP clients for loopback link"); + if (network->dhcp != ADDRESS_FAMILY_NO) + log_link_debug(link, "Ignoring DHCP clients for loopback link"); - if (network->dhcp_server) - log_link_debug(link, "Ignoring DHCP server for loopback link"); - } + if (network->dhcp_server) + log_link_debug(link, "Ignoring DHCP server for loopback link"); + } - r = network_apply(link->manager, network, link); - if (r < 0) - return r; + r = network_apply(link->manager, network, link); + if (r < 0) + return r; + } r = link_new_bound_to_list(link); if (r < 0) @@ -2009,177 +2133,191 @@ int link_initialized(Link *link, struct udev_device *device) { return 0; } -static Address* link_get_equal_address(Link *link, Address *needle) { - Address *i; +static int link_load(Link *link) { + _cleanup_free_ char *network_file = NULL, + *addresses = NULL, + *routes = NULL, + *dhcp4_address = NULL, + *ipv4ll_address = NULL; + union in_addr_union address; + union in_addr_union route_dst; + const char *p; + int r; assert(link); - assert(needle); - LIST_FOREACH(addresses, i, link->addresses) - if (address_equal(i, needle)) - return i; - - return NULL; -} - -int link_rtnl_process_address(sd_netlink *rtnl, sd_netlink_message *message, void *userdata) { - Manager *m = userdata; - Link *link = NULL; - uint16_t type; - _cleanup_address_free_ Address *address = NULL; - unsigned char flags; - Address *existing; - char buf[INET6_ADDRSTRLEN], valid_buf[FORMAT_TIMESPAN_MAX]; - const char *valid_str = NULL; - int r, ifindex; + r = parse_env_file(link->state_file, NEWLINE, + "NETWORK_FILE", &network_file, + "ADDRESSES", &addresses, + "ROUTES", &routes, + "DHCP4_ADDRESS", &dhcp4_address, + "IPV4LL_ADDRESS", &ipv4ll_address, + NULL); + if (r < 0 && r != -ENOENT) + return log_link_error_errno(link, r, "Failed to read %s: %m", link->state_file); + + if (network_file) { + Network *network; + char *suffix; + + /* drop suffix */ + suffix = strrchr(network_file, '.'); + if (!suffix) { + log_link_debug(link, "Failed to get network name from %s", network_file); + goto network_file_fail; + } + *suffix = '\0'; - assert(rtnl); - assert(message); - assert(m); + r = network_get_by_name(link->manager, basename(network_file), &network); + if (r < 0) { + log_link_debug_errno(link, r, "Failed to get network %s: %m", basename(network_file)); + goto network_file_fail; + } - if (sd_netlink_message_is_error(message)) { - r = sd_netlink_message_get_errno(message); + r = network_apply(link->manager, network, link); if (r < 0) - log_warning_errno(r, "rtnl: failed to receive address: %m"); - - return 0; + return log_link_error_errno(link, r, "Failed to apply network %s: %m", basename(network_file)); } - r = sd_netlink_message_get_type(message, &type); - if (r < 0) { - log_warning_errno(r, "rtnl: could not get message type: %m"); - return 0; - } else if (type != RTM_NEWADDR && type != RTM_DELADDR) { - log_warning("rtnl: received unexpected message type when processing address"); - return 0; - } - - r = sd_rtnl_message_addr_get_ifindex(message, &ifindex); - if (r < 0) { - log_warning_errno(r, "rtnl: could not get ifindex from address: %m"); - return 0; - } else if (ifindex <= 0) { - log_warning("rtnl: received address message with invalid ifindex: %d", ifindex); - return 0; - } else { - r = link_get(m, ifindex, &link); - if (r < 0 || !link) { - /* when enumerating we might be out of sync, but we will - * get the address again, so just ignore it */ - if (!m->enumerating) - log_warning("rtnl: received address for nonexistent link (%d), ignoring", ifindex); - return 0; - } - } +network_file_fail: - r = address_new_dynamic(&address); - if (r < 0) - return r; + if (addresses) { + p = addresses; - r = sd_rtnl_message_addr_get_family(message, &address->family); - if (r < 0 || !IN_SET(address->family, AF_INET, AF_INET6)) { - log_link_warning(link, "rtnl: received address with invalid family, ignoring."); - return 0; - } + for (;;) { + _cleanup_free_ char *address_str = NULL; + char *prefixlen_str; + int family; + unsigned char prefixlen; - r = sd_rtnl_message_addr_get_prefixlen(message, &address->prefixlen); - if (r < 0) { - log_link_warning_errno(link, r, "rtnl: received address with invalid prefixlen, ignoring: %m"); - return 0; - } + r = extract_first_word(&p, &address_str, NULL, 0); + if (r < 0) { + log_link_debug_errno(link, r, "Failed to extract next address string: %m"); + continue; + } if (r == 0) + break; - r = sd_rtnl_message_addr_get_scope(message, &address->scope); - if (r < 0) { - log_link_warning_errno(link, r, "rtnl: received address with invalid scope, ignoring: %m"); - return 0; - } + prefixlen_str = strchr(address_str, '/'); + if (!prefixlen_str) { + log_link_debug(link, "Failed to parse address and prefix length %s", address_str); + continue; + } - r = sd_rtnl_message_addr_get_flags(message, &flags); - if (r < 0) { - log_link_warning_errno(link, r, "rtnl: received address with invalid flags, ignoring: %m"); - return 0; - } - address->flags = flags; + *prefixlen_str ++ = '\0'; - switch (address->family) { - case AF_INET: - r = sd_netlink_message_read_in_addr(message, IFA_LOCAL, &address->in_addr.in); - if (r < 0) { - log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m"); - return 0; - } + r = sscanf(prefixlen_str, "%hhu", &prefixlen); + if (r != 1) { + log_link_error(link, "Failed to parse prefixlen %s", prefixlen_str); + continue; + } - break; + r = in_addr_from_string_auto(address_str, &family, &address); + if (r < 0) { + log_link_debug_errno(link, r, "Failed to parse address %s: %m", address_str); + continue; + } - case AF_INET6: - r = sd_netlink_message_read_in6_addr(message, IFA_ADDRESS, &address->in_addr.in6); - if (r < 0) { - log_link_warning_errno(link, r, "rtnl: received address without valid address, ignoring: %m"); - return 0; + r = address_add(link, family, &address, prefixlen, NULL); + if (r < 0) + return log_link_error_errno(link, r, "Failed to add address: %m"); } - - break; - - default: - assert_not_reached("invalid address family"); } - if (!inet_ntop(address->family, &address->in_addr, buf, INET6_ADDRSTRLEN)) { - log_link_warning(link, "Could not print address"); - return 0; - } + if (routes) { + for (;;) { + Route *route; + _cleanup_free_ char *route_str = NULL; + _cleanup_event_source_unref_ sd_event_source *expire = NULL; + usec_t lifetime; + char *prefixlen_str; + int family; + unsigned char prefixlen, tos, table; + uint32_t priority; - r = sd_netlink_message_read_cache_info(message, IFA_CACHEINFO, &address->cinfo); - if (r >= 0) { - if (address->cinfo.ifa_valid == CACHE_INFO_INFINITY_LIFE_TIME) - valid_str = "ever"; - else - valid_str = format_timespan(valid_buf, FORMAT_TIMESPAN_MAX, - address->cinfo.ifa_valid * USEC_PER_SEC, - USEC_PER_SEC); - } + r = extract_first_word(&p, &route_str, NULL, 0); + if (r < 0) { + log_link_debug_errno(link, r, "Failed to extract next route string: %m"); + continue; + } if (r == 0) + break; - existing = link_get_equal_address(link, address); + prefixlen_str = strchr(route_str, '/'); + if (!prefixlen_str) { + log_link_debug(link, "Failed to parse route %s", route_str); + continue; + } - switch (type) { - case RTM_NEWADDR: - if (existing) { - log_link_debug(link, "Updating address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str); + *prefixlen_str ++ = '\0'; + r = sscanf(prefixlen_str, "%hhu/%hhu/%"SCNu32"/%hhu/"USEC_FMT, &prefixlen, &tos, &priority, &table, &lifetime); + if (r != 5) { + log_link_debug(link, + "Failed to parse destination prefix length, tos, priority, table or expiration %s", + prefixlen_str); + continue; + } - existing->scope = address->scope; - existing->flags = address->flags; - existing->cinfo = address->cinfo; + r = in_addr_from_string_auto(route_str, &family, &route_dst); + if (r < 0) { + log_link_debug_errno(link, r, "Failed to parse route destination %s: %m", route_str); + continue; + } - } else { - log_link_debug(link, "Adding address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str); + r = route_add(link, family, &route_dst, prefixlen, tos, priority, table, &route); + if (r < 0) + return log_link_error_errno(link, r, "Failed to add route: %m"); - LIST_PREPEND(addresses, link->addresses, address); - address_establish(address, link); + if (lifetime != USEC_INFINITY) { + r = sd_event_add_time(link->manager->event, &expire, clock_boottime_or_monotonic(), lifetime, + 0, route_expire_handler, route); + if (r < 0) + log_link_warning_errno(link, r, "Could not arm route expiration handler: %m"); + } - address = NULL; + route->lifetime = lifetime; + sd_event_source_unref(route->expire); + route->expire = expire; + expire = NULL; + } + } - link_save(link); + if (dhcp4_address) { + r = in_addr_from_string(AF_INET, dhcp4_address, &address); + if (r < 0) { + log_link_debug_errno(link, r, "Falied to parse DHCPv4 address %s: %m", dhcp4_address); + goto dhcp4_address_fail; } - break; + r = sd_dhcp_client_new(&link->dhcp_client); + if (r < 0) + return log_link_error_errno(link, r, "Falied to create DHCPv4 client: %m"); + + r = sd_dhcp_client_set_request_address(link->dhcp_client, &address.in); + if (r < 0) + return log_link_error_errno(link, r, "Falied to set inital DHCPv4 address %s: %m", dhcp4_address); + } - case RTM_DELADDR: +dhcp4_address_fail: - if (existing) { - log_link_debug(link, "Removing address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str); - address_release(existing, link); - LIST_REMOVE(addresses, link->addresses, existing); - address_free(existing); - } else - log_link_warning(link, "Removing non-existent address: %s/%u (valid for %s)", buf, address->prefixlen, valid_str); + if (ipv4ll_address) { + r = in_addr_from_string(AF_INET, ipv4ll_address, &address); + if (r < 0) { + log_link_debug_errno(link, r, "Falied to parse IPv4LL address %s: %m", ipv4ll_address); + goto ipv4ll_address_fail; + } - break; - default: - assert_not_reached("Received invalid RTNL message type"); + r = sd_ipv4ll_new(&link->ipv4ll); + if (r < 0) + return log_link_error_errno(link, r, "Falied to create IPv4LL client: %m"); + + r = sd_ipv4ll_set_address(link->ipv4ll, &address.in); + if (r < 0) + return log_link_error_errno(link, r, "Falied to set inital IPv4LL address %s: %m", ipv4ll_address); } - return 1; +ipv4ll_address_fail: + + return 0; } int link_add(Manager *m, sd_netlink_message *message, Link **ret) { @@ -2201,12 +2339,18 @@ int link_add(Manager *m, sd_netlink_message *message, Link **ret) { log_link_debug(link, "Link %d added", link->ifindex); + r = link_load(link); + if (r < 0) + return r; + if (detect_container() <= 0) { /* not in a container, udev will be around */ sprintf(ifindex_str, "n%d", link->ifindex); device = udev_device_new_from_device_id(m->udev, ifindex_str); - if (!device) - return log_link_warning_errno(link, errno, "Could not find udev device: %m"); + if (!device) { + r = log_link_warning_errno(link, errno, "Could not find udev device: %m"); + goto failed; + } if (udev_device_get_is_initialized(device) <= 0) { /* not yet ready */ @@ -2216,17 +2360,20 @@ int link_add(Manager *m, sd_netlink_message *message, Link **ret) { r = link_initialized(link, device); if (r < 0) - return r; + goto failed; } else { /* we are calling a callback directly, so must take a ref */ link_ref(link); r = link_initialized_and_synced(m->rtnl, NULL, link); if (r < 0) - return r; + goto failed; } return 0; +failed: + link_enter_failed(link); + return r; } static int link_carrier_gained(Link *link) { @@ -2414,49 +2561,13 @@ int link_update(Link *link, sd_netlink_message *m) { return 0; } -static void link_update_operstate(Link *link) { - LinkOperationalState operstate; - assert(link); - - if (link->kernel_operstate == IF_OPER_DORMANT) - operstate = LINK_OPERSTATE_DORMANT; - else if (link_has_carrier(link)) { - Address *address; - uint8_t scope = RT_SCOPE_NOWHERE; - - /* if we have carrier, check what addresses we have */ - LIST_FOREACH(addresses, address, link->addresses) { - if (address->flags & (IFA_F_TENTATIVE | IFA_F_DEPRECATED)) - continue; - - if (address->scope < scope) - scope = address->scope; - } - - if (scope < RT_SCOPE_SITE) - /* universally accessible addresses found */ - operstate = LINK_OPERSTATE_ROUTABLE; - else if (scope < RT_SCOPE_HOST) - /* only link or site local addresses found */ - operstate = LINK_OPERSTATE_DEGRADED; - else - /* no useful addresses found */ - operstate = LINK_OPERSTATE_CARRIER; - } else if (link->flags & IFF_UP) - operstate = LINK_OPERSTATE_NO_CARRIER; - else - operstate = LINK_OPERSTATE_OFF; - - if (link->operstate != operstate) { - link->operstate = operstate; - link_send_changed(link, "OperationalState", NULL); - } -} - int link_save(Link *link) { _cleanup_free_ char *temp_path = NULL; _cleanup_fclose_ FILE *f = NULL; const char *admin_state, *oper_state; + Address *a; + Route *route; + Iterator i; int r; assert(link); @@ -2464,12 +2575,6 @@ int link_save(Link *link) { assert(link->lease_file); assert(link->manager); - link_update_operstate(link); - - r = manager_save(link->manager); - if (r < 0) - return r; - if (link->state == LINK_STATE_LINGER) { unlink(link->state_file); return 0; @@ -2537,13 +2642,12 @@ int link_save(Link *link) { if (space) fputc(' ', f); serialize_in6_addrs(f, in6_addrs, r); - space = true; } } - fputs("\n", f); + fputc('\n', f); - fprintf(f, "NTP="); + fputs("NTP=", f); space = false; STRV_FOREACH(address, link->network->ntp) { if (space) @@ -2590,9 +2694,9 @@ int link_save(Link *link) { } } - fputs("\n", f); + fputc('\n', f); - fprintf(f, "DOMAINS="); + fputs("DOMAINS=", f); space = false; STRV_FOREACH(domain, link->network->domains) { if (space) @@ -2628,18 +2732,48 @@ int link_save(Link *link) { } } - fputs("\n", f); + fputc('\n', f); fprintf(f, "WILDCARD_DOMAIN=%s\n", yes_no(link->network->wildcard_domain)); fprintf(f, "LLMNR=%s\n", resolve_support_to_string(link->network->llmnr)); + + fputs("ADDRESSES=", f); + space = false; + SET_FOREACH(a, link->addresses, i) { + _cleanup_free_ char *address_str = NULL; + + r = in_addr_to_string(a->family, &a->in_addr, &address_str); + if (r < 0) + goto fail; + + fprintf(f, "%s%s/%u", space ? " " : "", address_str, a->prefixlen); + space = true; + } + + fputc('\n', f); + + fputs("ROUTES=", f); + space = false; + SET_FOREACH(route, link->routes, i) { + _cleanup_free_ char *route_str = NULL; + + r = in_addr_to_string(route->family, &route->dst, &route_str); + if (r < 0) + goto fail; + + fprintf(f, "%s%s/%hhu/%hhu/%"PRIu32"/%hhu/"USEC_FMT, space ? " " : "", route_str, + route->dst_prefixlen, route->tos, route->priority, route->table, route->lifetime); + space = true; + } + + fputc('\n', f); } if (!hashmap_isempty(link->bound_to_links)) { Link *carrier; - Iterator i; bool space = false; fputs("CARRIER_BOUND_TO=", f); @@ -2650,12 +2784,11 @@ int link_save(Link *link) { space = true; } - fputs("\n", f); + fputc('\n', f); } if (!hashmap_isempty(link->bound_by_links)) { Link *carrier; - Iterator i; bool space = false; fputs("CARRIER_BOUND_BY=", f); @@ -2666,19 +2799,25 @@ int link_save(Link *link) { space = true; } - fputs("\n", f); + fputc('\n', f); } if (link->dhcp_lease) { + struct in_addr address; const char *tz = NULL; + assert(link->network); + r = sd_dhcp_lease_get_timezone(link->dhcp_lease, &tz); if (r >= 0) fprintf(f, "TIMEZONE=%s\n", tz); - } - if (link->dhcp_lease) { - assert(link->network); + r = sd_dhcp_lease_get_address(link->dhcp_lease, &address); + if (r >= 0) { + fputs("DHCP4_ADDRESS=", f); + serialize_in_addrs(f, &address, 1); + fputc('\n', f); + } r = dhcp_lease_save(link->dhcp_lease, link->lease_file); if (r < 0) @@ -2690,6 +2829,17 @@ int link_save(Link *link) { } else unlink(link->lease_file); + if (link->ipv4ll) { + struct in_addr address; + + r = sd_ipv4ll_get_address(link->ipv4ll, &address); + if (r >= 0) { + fputs("IPV4LL_ADDRESS=", f); + serialize_in_addrs(f, &address, 1); + fputc('\n', f); + } + } + if (link->lldp) { assert(link->network); @@ -2722,6 +2872,34 @@ fail: return log_link_error_errno(link, r, "Failed to save link data to %s: %m", link->state_file); } +/* The serialized state in /run is no longer up-to-date. */ +void link_dirty(Link *link) { + int r; + + assert(link); + + r = set_ensure_allocated(&link->manager->dirty_links, NULL); + if (r < 0) + /* allocation errors are ignored */ + return; + + r = set_put(link->manager->dirty_links, link); + if (r < 0) + /* allocation errors are ignored */ + return; + + link_ref(link); +} + +/* The serialized state in /run is up-to-date */ +void link_clean(Link *link) { + assert(link); + assert(link->manager); + + set_remove(link->manager->dirty_links, link); + link_unref(link); +} + static const char* const link_state_table[_LINK_STATE_MAX] = { [LINK_STATE_PENDING] = "pending", [LINK_STATE_ENSLAVING] = "configuring", |