X-Git-Url: http://www.chiark.greenend.org.uk/ucgi/~ianmdlvl/git?p=elogind.git;a=blobdiff_plain;f=src%2Fnetwork%2Fnetworkd-link.c;h=e674b3b12c76070dafe56aa9d31dfa63bd26a1e5;hp=87bdd85644dc480ae643426a09a2f1f172bd8653;hb=bd8f65387673e29f46136a4ed172097035002c23;hpb=af93291cc4cbd2fe2fb4af7d3c56138fb39f31dc diff --git a/src/network/networkd-link.c b/src/network/networkd-link.c index 87bdd8564..e674b3b12 100644 --- a/src/network/networkd-link.c +++ b/src/network/networkd-link.c @@ -36,9 +36,6 @@ #include "network-util.h" #include "dhcp-lease-internal.h" -static int ipv4ll_address_update(Link *link, bool deprecate); -static bool ipv4ll_is_bound(sd_ipv4ll *ll); - static int link_new(Manager *manager, sd_rtnl_message *message, Link **ret) { _cleanup_link_unref_ Link *link = NULL; uint16_t type; @@ -205,9 +202,7 @@ static int link_stop_clients(Link *link) { if (!link->network) return 0; - if (IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V6)) { - assert(link->dhcp_client); - + if (link->dhcp_client) { k = sd_dhcp_client_stop(link->dhcp_client); if (k < 0) { log_warning_link(link, "Could not stop DHCPv4 client: %s", strerror(-r)); @@ -215,9 +210,7 @@ static int link_stop_clients(Link *link) { } } - if (link->network->ipv4ll) { - assert(link->ipv4ll); - + if (link->ipv4ll) { k = sd_ipv4ll_stop(link->ipv4ll); if (k < 0) { log_warning_link(link, "Could not stop IPv4 link-local: %s", strerror(-r)); @@ -225,9 +218,7 @@ static int link_stop_clients(Link *link) { } } - if (link->network->dhcp_server) { - assert(link->dhcp_server); - + if (link->dhcp_server) { k = sd_dhcp_server_stop(link->dhcp_server); if (k < 0) { log_warning_link(link, "Could not stop DHCPv4 server: %s", strerror(-r)); @@ -235,8 +226,7 @@ static int link_stop_clients(Link *link) { } } - if (IN_SET(link->network->dhcp, DHCP_SUPPORT_BOTH, DHCP_SUPPORT_V6)) { - assert(link->icmp6_router_discovery); + if(link->icmp6_router_discovery) { if (link->dhcp6_client) { k = sd_dhcp6_client_stop(link->dhcp6_client); @@ -439,6 +429,20 @@ static int link_set_dhcp_routes(Link *link) { return 0; } +static bool ipv4ll_is_bound(sd_ipv4ll *ll) { + int r; + struct in_addr addr; + + if (!ll) + return false; + + r = sd_ipv4ll_get_address(ll, &addr); + if (r < 0) + return false; + + return true; +} + static int link_enter_set_routes(Link *link) { Route *rt; int r; @@ -449,8 +453,9 @@ static int link_enter_set_routes(Link *link) { link->state = LINK_STATE_SETTING_ROUTES; - if (!link->network->static_routes && !link->dhcp_lease && - (!link->ipv4ll || ipv4ll_is_bound(link->ipv4ll) == false)) + if (!link->network->static_routes && + !link->dhcp_lease && + !ipv4ll_is_bound(link->ipv4ll)) return link_enter_configured(link); log_debug_link(link, "setting routes"); @@ -467,31 +472,29 @@ static int link_enter_set_routes(Link *link) { link->route_messages ++; } - if (link->ipv4ll && !link->dhcp_lease) { + if (ipv4ll_is_bound(link->ipv4ll)) { _cleanup_route_free_ Route *route = NULL; - if (r != -ENOENT) { - r = route_new_dynamic(&route, RTPROT_STATIC); - if (r < 0) { - log_error_link(link, "Could not allocate route: %s", - strerror(-r)); - return r; - } - - route->family = AF_INET; - route->scope = RT_SCOPE_LINK; - route->metrics = IPV4LL_ROUTE_METRIC; + r = route_new_dynamic(&route, RTPROT_STATIC); + if (r < 0) { + log_error_link(link, "Could not allocate route: %s", + strerror(-r)); + return r; + } - r = route_configure(route, link, &route_handler); - if (r < 0) { - log_warning_link(link, - "could not set routes: %s", strerror(-r)); - link_enter_failed(link); - return r; - } + route->family = AF_INET; + route->scope = RT_SCOPE_LINK; + route->metrics = IPV4LL_ROUTE_METRIC; - link->route_messages ++; + r = route_configure(route, link, &route_handler); + if (r < 0) { + log_warning_link(link, + "could not set routes: %s", strerror(-r)); + link_enter_failed(link); + return r; } + + link->route_messages ++; } if (link->dhcp_lease) { @@ -662,8 +665,9 @@ static int link_enter_set_addresses(Link *link) { link->state = LINK_STATE_SETTING_ADDRESSES; - if (!link->network->static_addresses && !link->dhcp_lease && - (!link->ipv4ll || ipv4ll_is_bound(link->ipv4ll) == false)) + if (!link->network->static_addresses && + !link->dhcp_lease && + !ipv4ll_is_bound(link->ipv4ll)) return link_enter_set_routes(link); log_debug_link(link, "setting addresses"); @@ -680,7 +684,7 @@ static int link_enter_set_addresses(Link *link) { link->addr_messages ++; } - if (link->ipv4ll && !link->dhcp_lease) { + if (link->ipv4ll) { _cleanup_address_free_ Address *ll_addr = NULL; struct in_addr addr; @@ -778,29 +782,6 @@ static int link_enter_set_addresses(Link *link) { return 0; } -static int address_update_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { - _cleanup_link_unref_ Link *link = userdata; - int r; - - assert(m); - assert(link); - assert(link->ifname); - - if (IN_SET(link->state, LINK_STATE_FAILED, LINK_STATE_LINGER)) - return 1; - - r = sd_rtnl_message_get_errno(m); - if (r < 0 && r != -ENOENT) - log_struct_link(LOG_WARNING, link, - "MESSAGE=%-*s: could not update address: %s", - IFNAMSIZ, - link->ifname, strerror(-r), - "ERRNO=%d", -r, - NULL); - - return 1; -} - static int address_drop_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata) { _cleanup_link_unref_ Link *link = userdata; int r; @@ -1197,17 +1178,6 @@ static void dhcp_handler(sd_dhcp_client *client, int event, void *userdata) { } } - if (event == DHCP_EVENT_EXPIRED && link->network->ipv4ll) { - if (!sd_ipv4ll_is_running(link->ipv4ll)) - r = sd_ipv4ll_start(link->ipv4ll); - else if (ipv4ll_is_bound(link->ipv4ll)) - r = ipv4ll_address_update(link, false); - if (r < 0) { - link_enter_failed(link); - return; - } - } - break; case DHCP_EVENT_RENEW: r = dhcp_lease_renew(client, link); @@ -1222,16 +1192,6 @@ static void dhcp_handler(sd_dhcp_client *client, int event, void *userdata) { link_enter_failed(link); return; } - if (link->ipv4ll) { - if (ipv4ll_is_bound(link->ipv4ll)) - r = ipv4ll_address_update(link, true); - else - r = sd_ipv4ll_stop(link->ipv4ll); - if (r < 0) { - link_enter_failed(link); - return; - } - } break; default: if (event < 0) @@ -1244,40 +1204,6 @@ static void dhcp_handler(sd_dhcp_client *client, int event, void *userdata) { return; } -static int ipv4ll_address_update(Link *link, bool deprecate) { - int r; - struct in_addr addr; - - assert(link); - - r = sd_ipv4ll_get_address(link->ipv4ll, &addr); - if (r >= 0) { - _cleanup_address_free_ Address *address = NULL; - - log_debug_link(link, "IPv4 link-local %s %u.%u.%u.%u", - deprecate ? "deprecate" : "approve", - ADDRESS_FMT_VAL(addr)); - - r = address_new_dynamic(&address); - if (r < 0) { - log_error_link(link, "Could not allocate address: %s", strerror(-r)); - return r; - } - - address->family = AF_INET; - address->in_addr.in = addr; - address->prefixlen = 16; - address->scope = RT_SCOPE_LINK; - address->cinfo.ifa_prefered = deprecate ? 0 : CACHE_INFO_INFINITY_LIFE_TIME; - address->broadcast.s_addr = address->in_addr.in.s_addr | htonl(0xfffffffflu >> address->prefixlen); - - address_update(address, link, &address_update_handler); - } - - return 0; - -} - static int ipv4ll_address_lost(Link *link) { int r; struct in_addr addr; @@ -1322,18 +1248,6 @@ static int ipv4ll_address_lost(Link *link) { return 0; } -static bool ipv4ll_is_bound(sd_ipv4ll *ll) { - int r; - struct in_addr addr; - - assert(ll); - - r = sd_ipv4ll_get_address(ll, &addr); - if (r < 0) - return false; - return true; -} - static int ipv4ll_address_claimed(sd_ipv4ll *ll, Link *link) { struct in_addr address; int r; @@ -1726,8 +1640,6 @@ static int link_joined(Link *link) { assert(link->state == LINK_STATE_ENSLAVING); assert(link->network); - log_debug_link(link, "joined netdev"); - if (!(link->flags & IFF_UP)) { r = link_up(link); if (r < 0) { @@ -1763,7 +1675,8 @@ static int netdev_join_handler(sd_rtnl *rtnl, sd_rtnl_message *m, void *userdata NULL); link_enter_failed(link); return 1; - } + } else + log_debug_link(link, "joined netdev"); if (link->enslaving <= 0) link_joined(link); @@ -1922,8 +1835,14 @@ static int link_configure(Link *link) { if (r < 0) return r; + if (link->mtu) { + r = sd_dhcp_client_set_mtu(link->dhcp_client, link->mtu); + if (r < 0) + return r; + } + if (link->network->dhcp_mtu) { - r = sd_dhcp_client_set_request_option(link->dhcp_client, 26); + r = sd_dhcp_client_set_request_option(link->dhcp_client, DHCP_OPTION_INTERFACE_MTU); if (r < 0) return r; } @@ -2233,7 +2152,7 @@ int link_add(Manager *m, sd_rtnl_message *message, Link **ret) { sprintf(ifindex_str, "n%d", link->ifindex); device = udev_device_new_from_device_id(m->udev, ifindex_str); if (!device) { - log_warning_link(link, "could not find udev device"); + log_warning_link(link, "could not find udev device: %m"); return -errno; } @@ -2261,6 +2180,7 @@ int link_add(Manager *m, sd_rtnl_message *message, Link **ret) { int link_update(Link *link, sd_rtnl_message *m) { struct ether_addr mac; const char *ifname; + uint32_t mtu; int r; assert(link); @@ -2283,11 +2203,23 @@ int link_update(Link *link, sd_rtnl_message *m) { return -ENOMEM; } - if (!link->original_mtu) { - r = sd_rtnl_message_read_u16(m, IFLA_MTU, &link->original_mtu); - if (r >= 0) + r = sd_rtnl_message_read_u32(m, IFLA_MTU, &mtu); + if (r >= 0 && mtu > 0) { + link->mtu = mtu; + if (!link->original_mtu) { + link->original_mtu = mtu; log_debug_link(link, "saved original MTU: %" - PRIu16, link->original_mtu); + PRIu32, link->original_mtu); + } + + if (link->dhcp_client) { + r = sd_dhcp_client_set_mtu(link->dhcp_client, link->mtu); + if (r < 0) { + log_warning_link(link, "Could not update MTU in DHCP client: %s", + strerror(-r)); + return r; + } + } } /* The kernel may broadcast NEWLINK messages without the MAC address @@ -2453,6 +2385,8 @@ int link_save(Link *link) { (address + 1 ? " " : "")); fputs("\n", f); + + fprintf(f, "LLMNR=%s\n", llmnr_support_to_string(link->network->llmnr)); } if (link->dhcp_lease) { @@ -2505,55 +2439,3 @@ static const char* const link_operstate_table[_LINK_OPERSTATE_MAX] = { }; DEFINE_STRING_TABLE_LOOKUP(link_operstate, LinkOperationalState); - -static const char* const dhcp_support_table[_DHCP_SUPPORT_MAX] = { - [DHCP_SUPPORT_NONE] = "none", - [DHCP_SUPPORT_BOTH] = "both", - [DHCP_SUPPORT_V4] = "v4", - [DHCP_SUPPORT_V6] = "v6", -}; - -DEFINE_STRING_TABLE_LOOKUP(dhcp_support, DHCPSupport); - -int config_parse_dhcp( - 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) { - - DHCPSupport *dhcp = data; - int k; - - assert(filename); - assert(lvalue); - assert(rvalue); - assert(data); - - /* Our enum shall be a superset of booleans, hence first try - * to parse as boolean, and then as enum */ - - k = parse_boolean(rvalue); - if (k > 0) - *dhcp = DHCP_SUPPORT_BOTH; - else if (k == 0) - *dhcp = DHCP_SUPPORT_NONE; - else { - DHCPSupport s; - - s = dhcp_support_from_string(rvalue); - if (s < 0){ - log_syntax(unit, LOG_ERR, filename, line, -s, "Failed to parse DHCP option, ignoring: %s", rvalue); - return 0; - } - - *dhcp = s; - } - - return 0; -}