| /* SPDX-License-Identifier: LGPL-2.1-or-later */ |
| |
| #include <linux/netdevice.h> |
| #include <netinet/ether.h> |
| #include <unistd.h> |
| |
| #include "sd-device.h" |
| #include "sd-netlink.h" |
| |
| #include "alloc-util.h" |
| #include "conf-files.h" |
| #include "conf-parser.h" |
| #include "def.h" |
| #include "device-private.h" |
| #include "device-util.h" |
| #include "ethtool-util.h" |
| #include "fd-util.h" |
| #include "link-config.h" |
| #include "log.h" |
| #include "memory-util.h" |
| #include "net-condition.h" |
| #include "netif-naming-scheme.h" |
| #include "netlink-util.h" |
| #include "network-util.h" |
| #include "parse-util.h" |
| #include "path-lookup.h" |
| #include "path-util.h" |
| #include "proc-cmdline.h" |
| #include "random-util.h" |
| #include "stat-util.h" |
| #include "string-table.h" |
| #include "string-util.h" |
| #include "strv.h" |
| #include "utf8.h" |
| |
| struct LinkConfigContext { |
| LIST_HEAD(LinkConfig, links); |
| int ethtool_fd; |
| bool enable_name_policy; |
| sd_netlink *rtnl; |
| usec_t network_dirs_ts_usec; |
| }; |
| |
| static LinkConfig* link_config_free(LinkConfig *link) { |
| if (!link) |
| return NULL; |
| |
| free(link->filename); |
| |
| net_match_clear(&link->match); |
| condition_free_list(link->conditions); |
| |
| free(link->description); |
| free(link->mac); |
| free(link->name_policy); |
| free(link->name); |
| strv_free(link->alternative_names); |
| free(link->alternative_names_policy); |
| free(link->alias); |
| |
| return mfree(link); |
| } |
| |
| DEFINE_TRIVIAL_CLEANUP_FUNC(LinkConfig*, link_config_free); |
| |
| static void link_configs_free(LinkConfigContext *ctx) { |
| LinkConfig *link, *link_next; |
| |
| if (!ctx) |
| return; |
| |
| LIST_FOREACH_SAFE(links, link, link_next, ctx->links) |
| link_config_free(link); |
| } |
| |
| LinkConfigContext *link_config_ctx_free(LinkConfigContext *ctx) { |
| if (!ctx) |
| return NULL; |
| |
| safe_close(ctx->ethtool_fd); |
| sd_netlink_unref(ctx->rtnl); |
| link_configs_free(ctx); |
| return mfree(ctx); |
| } |
| |
| int link_config_ctx_new(LinkConfigContext **ret) { |
| _cleanup_(link_config_ctx_freep) LinkConfigContext *ctx = NULL; |
| |
| if (!ret) |
| return -EINVAL; |
| |
| ctx = new(LinkConfigContext, 1); |
| if (!ctx) |
| return -ENOMEM; |
| |
| *ctx = (LinkConfigContext) { |
| .ethtool_fd = -1, |
| .enable_name_policy = true, |
| }; |
| |
| *ret = TAKE_PTR(ctx); |
| |
| return 0; |
| } |
| |
| int link_load_one(LinkConfigContext *ctx, const char *filename) { |
| _cleanup_(link_config_freep) LinkConfig *link = NULL; |
| _cleanup_free_ char *name = NULL; |
| const char *dropin_dirname; |
| size_t i; |
| int r; |
| |
| assert(ctx); |
| assert(filename); |
| |
| r = null_or_empty_path(filename); |
| if (r == -ENOENT) |
| return 0; |
| if (r < 0) |
| return r; |
| if (r > 0) { |
| log_debug("Skipping empty file: %s", filename); |
| return 0; |
| } |
| |
| name = strdup(filename); |
| if (!name) |
| return -ENOMEM; |
| |
| link = new(LinkConfig, 1); |
| if (!link) |
| return -ENOMEM; |
| |
| *link = (LinkConfig) { |
| .filename = TAKE_PTR(name), |
| .mac_address_policy = _MAC_ADDRESS_POLICY_INVALID, |
| .wol = UINT32_MAX, /* UINT32_MAX means do not change WOL setting. */ |
| .duplex = _DUP_INVALID, |
| .port = _NET_DEV_PORT_INVALID, |
| .autonegotiation = -1, |
| .rx_flow_control = -1, |
| .tx_flow_control = -1, |
| .autoneg_flow_control = -1, |
| .txqueuelen = UINT32_MAX, |
| }; |
| |
| for (i = 0; i < ELEMENTSOF(link->features); i++) |
| link->features[i] = -1; |
| |
| dropin_dirname = strjoina(basename(filename), ".d"); |
| r = config_parse_many( |
| STRV_MAKE_CONST(filename), |
| (const char* const*) CONF_PATHS_STRV("systemd/network"), |
| dropin_dirname, |
| "Match\0Link\0", |
| config_item_perf_lookup, link_config_gperf_lookup, |
| CONFIG_PARSE_WARN, link, NULL); |
| if (r < 0) |
| return r; |
| |
| if (net_match_is_empty(&link->match) && !link->conditions) { |
| log_warning("%s: No valid settings found in the [Match] section, ignoring file. " |
| "To match all interfaces, add OriginalName=* in the [Match] section.", |
| filename); |
| return 0; |
| } |
| |
| if (!condition_test_list(link->conditions, environ, NULL, NULL, NULL)) { |
| log_debug("%s: Conditions do not match the system environment, skipping.", filename); |
| return 0; |
| } |
| |
| if (IN_SET(link->mac_address_policy, MAC_ADDRESS_POLICY_PERSISTENT, MAC_ADDRESS_POLICY_RANDOM) && link->mac) { |
| log_warning("%s: MACAddress= in [Link] section will be ignored when MACAddressPolicy= " |
| "is set to \"persistent\" or \"random\".", |
| filename); |
| link->mac = mfree(link->mac); |
| } |
| |
| log_debug("Parsed configuration file %s", filename); |
| |
| LIST_PREPEND(links, ctx->links, TAKE_PTR(link)); |
| return 0; |
| } |
| |
| static bool enable_name_policy(void) { |
| bool b; |
| |
| return proc_cmdline_get_bool("net.ifnames", &b) <= 0 || b; |
| } |
| |
| static int link_unsigned_attribute(sd_device *device, const char *attr, unsigned *type) { |
| const char *s; |
| int r; |
| |
| r = sd_device_get_sysattr_value(device, attr, &s); |
| if (r < 0) |
| return log_device_debug_errno(device, r, "Failed to query %s: %m", attr); |
| |
| r = safe_atou(s, type); |
| if (r < 0) |
| return log_device_warning_errno(device, r, "Failed to parse %s \"%s\": %m", attr, s); |
| |
| log_device_debug(device, "Device has %s=%u", attr, *type); |
| return 0; |
| } |
| |
| int link_config_load(LinkConfigContext *ctx) { |
| _cleanup_strv_free_ char **files = NULL; |
| char **f; |
| int r; |
| |
| link_configs_free(ctx); |
| |
| if (!enable_name_policy()) { |
| ctx->enable_name_policy = false; |
| log_info("Network interface NamePolicy= disabled on kernel command line, ignoring."); |
| } |
| |
| /* update timestamp */ |
| paths_check_timestamp(NETWORK_DIRS, &ctx->network_dirs_ts_usec, true); |
| |
| r = conf_files_list_strv(&files, ".link", NULL, 0, NETWORK_DIRS); |
| if (r < 0) |
| return log_error_errno(r, "failed to enumerate link files: %m"); |
| |
| STRV_FOREACH_BACKWARDS(f, files) { |
| r = link_load_one(ctx, *f); |
| if (r < 0) |
| log_error_errno(r, "Failed to load %s, ignoring: %m", *f); |
| } |
| |
| return 0; |
| } |
| |
| bool link_config_should_reload(LinkConfigContext *ctx) { |
| return paths_check_timestamp(NETWORK_DIRS, &ctx->network_dirs_ts_usec, false); |
| } |
| |
| int link_config_get(LinkConfigContext *ctx, sd_device *device, LinkConfig **ret) { |
| unsigned name_assign_type = NET_NAME_UNKNOWN; |
| struct ether_addr permanent_mac = {}; |
| unsigned short iftype; |
| LinkConfig *link; |
| const char *name; |
| unsigned flags; |
| int ifindex, r; |
| |
| assert(ctx); |
| assert(device); |
| assert(ret); |
| |
| r = sd_device_get_sysname(device, &name); |
| if (r < 0) |
| return r; |
| |
| r = sd_device_get_ifindex(device, &ifindex); |
| if (r < 0) |
| return r; |
| |
| r = rtnl_get_link_info(&ctx->rtnl, ifindex, &iftype, &flags); |
| if (r < 0) |
| return r; |
| |
| /* Do not configure loopback interfaces by .link files. */ |
| if (flags & IFF_LOOPBACK) |
| return -ENOENT; |
| |
| r = ethtool_get_permanent_macaddr(&ctx->ethtool_fd, name, &permanent_mac); |
| if (r < 0) |
| log_device_debug_errno(device, r, "Failed to get permanent MAC address, ignoring: %m"); |
| |
| (void) link_unsigned_attribute(device, "name_assign_type", &name_assign_type); |
| |
| LIST_FOREACH(links, link, ctx->links) { |
| r = net_match_config(&link->match, device, NULL, &permanent_mac, NULL, iftype, NULL, NULL, 0, NULL, NULL); |
| if (r < 0) |
| return r; |
| if (r == 0) |
| continue; |
| |
| if (link->match.ifname && !strv_contains(link->match.ifname, "*") && name_assign_type == NET_NAME_ENUM) |
| log_device_warning(device, "Config file %s is applied to device based on potentially unpredictable interface name.", |
| link->filename); |
| else |
| log_device_debug(device, "Config file %s is applied", link->filename); |
| |
| *ret = link; |
| return 0; |
| } |
| |
| return -ENOENT; |
| } |
| |
| static int link_config_apply_ethtool_settings(int *ethtool_fd, const LinkConfig *config, sd_device *device) { |
| const char *name; |
| int r; |
| |
| assert(ethtool_fd); |
| assert(config); |
| assert(device); |
| |
| r = sd_device_get_sysname(device, &name); |
| if (r < 0) |
| return log_device_error_errno(device, r, "Failed to get sysname: %m"); |
| |
| r = ethtool_set_glinksettings(ethtool_fd, name, |
| config->autonegotiation, config->advertise, |
| config->speed, config->duplex, config->port); |
| if (r < 0) { |
| if (config->autonegotiation >= 0) |
| log_device_warning_errno(device, r, "Could not %s auto negotiation, ignoring: %m", |
| enable_disable(config->autonegotiation)); |
| |
| if (!eqzero(config->advertise)) |
| log_device_warning_errno(device, r, "Could not set advertise mode, ignoring: %m"); |
| |
| if (config->speed > 0) |
| log_device_warning_errno(device, r, "Could not set speed to %"PRIu64"Mbps, ignoring: %m", |
| DIV_ROUND_UP(config->speed, 1000000)); |
| |
| if (config->duplex >= 0) |
| log_device_warning_errno(device, r, "Could not set duplex to %s, ignoring: %m", |
| duplex_to_string(config->duplex)); |
| |
| if (config->port >= 0) |
| log_device_warning_errno(device, r, "Could not set port to '%s', ignoring: %m", |
| port_to_string(config->port)); |
| } |
| |
| r = ethtool_set_wol(ethtool_fd, name, config->wol); |
| if (r < 0) { |
| _cleanup_free_ char *str = NULL; |
| |
| (void) wol_options_to_string_alloc(config->wol, &str); |
| log_device_warning_errno(device, r, "Could not set WakeOnLan to %s, ignoring: %m", |
| strna(str)); |
| } |
| |
| r = ethtool_set_features(ethtool_fd, name, config->features); |
| if (r < 0) |
| log_device_warning_errno(device, r, "Could not set offload features, ignoring: %m"); |
| |
| r = ethtool_set_channels(ethtool_fd, name, &config->channels); |
| if (r < 0) |
| log_device_warning_errno(device, r, "Could not set channels, ignoring: %m"); |
| |
| r = ethtool_set_nic_buffer_size(ethtool_fd, name, &config->ring); |
| if (r < 0) |
| log_device_warning_errno(device, r, "Could not set ring buffer, ignoring: %m"); |
| |
| r = ethtool_set_flow_control(ethtool_fd, name, config->rx_flow_control, config->tx_flow_control, config->autoneg_flow_control); |
| if (r < 0) |
| log_device_warning_errno(device, r, "Could not set flow control, ignoring: %m"); |
| |
| return 0; |
| } |
| |
| static int get_mac(sd_device *device, MACAddressPolicy policy, struct ether_addr *mac) { |
| unsigned addr_type; |
| bool want_random = policy == MAC_ADDRESS_POLICY_RANDOM; |
| int r; |
| |
| assert(IN_SET(policy, MAC_ADDRESS_POLICY_RANDOM, MAC_ADDRESS_POLICY_PERSISTENT)); |
| |
| r = link_unsigned_attribute(device, "addr_assign_type", &addr_type); |
| if (r < 0) |
| return r; |
| switch (addr_type) { |
| case NET_ADDR_SET: |
| log_device_debug(device, "MAC on the device already set by userspace"); |
| return 0; |
| case NET_ADDR_STOLEN: |
| log_device_debug(device, "MAC on the device already set based on another device"); |
| return 0; |
| case NET_ADDR_RANDOM: |
| case NET_ADDR_PERM: |
| break; |
| default: |
| log_device_warning(device, "Unknown addr_assign_type %u, ignoring", addr_type); |
| return 0; |
| } |
| |
| if (want_random == (addr_type == NET_ADDR_RANDOM)) { |
| log_device_debug(device, "MAC on the device already matches policy *%s*", |
| mac_address_policy_to_string(policy)); |
| return 0; |
| } |
| |
| if (want_random) { |
| log_device_debug(device, "Using random bytes to generate MAC"); |
| |
| /* We require genuine randomness here, since we want to make sure we won't collide with other |
| * systems booting up at the very same time. We do allow RDRAND however, since this is not |
| * cryptographic key material. */ |
| r = genuine_random_bytes(mac->ether_addr_octet, ETH_ALEN, RANDOM_ALLOW_RDRAND); |
| if (r < 0) |
| return log_device_error_errno(device, r, "Failed to acquire random data to generate MAC: %m"); |
| } else { |
| uint64_t result; |
| |
| r = net_get_unique_predictable_data(device, |
| naming_scheme_has(NAMING_STABLE_VIRTUAL_MACS), |
| &result); |
| if (r < 0) |
| return log_device_warning_errno(device, r, "Could not generate persistent MAC: %m"); |
| |
| log_device_debug(device, "Using generated persistent MAC address"); |
| assert_cc(ETH_ALEN <= sizeof(result)); |
| memcpy(mac->ether_addr_octet, &result, ETH_ALEN); |
| } |
| |
| /* see eth_random_addr in the kernel */ |
| mac->ether_addr_octet[0] &= 0xfe; /* clear multicast bit */ |
| mac->ether_addr_octet[0] |= 0x02; /* set local assignment bit (IEEE802) */ |
| return 1; |
| } |
| |
| static int link_config_apply_rtnl_settings(sd_netlink **rtnl, const LinkConfig *config, sd_device *device) { |
| struct ether_addr generated_mac, *mac = NULL; |
| int ifindex, r; |
| |
| assert(rtnl); |
| assert(config); |
| assert(device); |
| |
| r = sd_device_get_ifindex(device, &ifindex); |
| if (r < 0) |
| return log_device_error_errno(device, r, "Could not find ifindex: %m"); |
| |
| if (IN_SET(config->mac_address_policy, MAC_ADDRESS_POLICY_PERSISTENT, MAC_ADDRESS_POLICY_RANDOM)) { |
| if (get_mac(device, config->mac_address_policy, &generated_mac) > 0) |
| mac = &generated_mac; |
| } else |
| mac = config->mac; |
| |
| r = rtnl_set_link_properties(rtnl, ifindex, config->alias, mac, |
| config->txqueues, config->rxqueues, config->txqueuelen, |
| config->mtu, config->gso_max_size, config->gso_max_segments); |
| if (r < 0) |
| log_device_warning_errno(device, r, |
| "Could not set Alias=, MACAddress=, " |
| "TransmitQueues=, ReceiveQueues=, TransmitQueueLength=, MTU=, " |
| "GenericSegmentOffloadMaxBytes= or GenericSegmentOffloadMaxSegments=, " |
| "ignoring: %m"); |
| |
| return 0; |
| } |
| |
| static int link_config_generate_new_name(const LinkConfigContext *ctx, const LinkConfig *config, sd_device *device, const char **ret_name) { |
| unsigned name_type = NET_NAME_UNKNOWN; |
| int r; |
| |
| assert(ctx); |
| assert(config); |
| assert(device); |
| assert(ret_name); |
| |
| (void) link_unsigned_attribute(device, "name_assign_type", &name_type); |
| |
| if (IN_SET(name_type, NET_NAME_USER, NET_NAME_RENAMED) |
| && !naming_scheme_has(NAMING_ALLOW_RERENAMES)) { |
| log_device_debug(device, "Device already has a name given by userspace, not renaming."); |
| goto no_rename; |
| } |
| |
| if (ctx->enable_name_policy && config->name_policy) |
| for (NamePolicy *p = config->name_policy; *p != _NAMEPOLICY_INVALID; p++) { |
| const char *new_name = NULL; |
| NamePolicy policy = *p; |
| |
| switch (policy) { |
| case NAMEPOLICY_KERNEL: |
| if (name_type != NET_NAME_PREDICTABLE) |
| continue; |
| |
| /* The kernel claims to have given a predictable name, keep it. */ |
| log_device_debug(device, "Policy *%s*: keeping predictable kernel name", |
| name_policy_to_string(policy)); |
| goto no_rename; |
| case NAMEPOLICY_KEEP: |
| if (!IN_SET(name_type, NET_NAME_USER, NET_NAME_RENAMED)) |
| continue; |
| |
| log_device_debug(device, "Policy *%s*: keeping existing userspace name", |
| name_policy_to_string(policy)); |
| goto no_rename; |
| case NAMEPOLICY_DATABASE: |
| (void) sd_device_get_property_value(device, "ID_NET_NAME_FROM_DATABASE", &new_name); |
| break; |
| case NAMEPOLICY_ONBOARD: |
| (void) sd_device_get_property_value(device, "ID_NET_NAME_ONBOARD", &new_name); |
| break; |
| case NAMEPOLICY_SLOT: |
| (void) sd_device_get_property_value(device, "ID_NET_NAME_SLOT", &new_name); |
| break; |
| case NAMEPOLICY_PATH: |
| (void) sd_device_get_property_value(device, "ID_NET_NAME_PATH", &new_name); |
| break; |
| case NAMEPOLICY_MAC: |
| (void) sd_device_get_property_value(device, "ID_NET_NAME_MAC", &new_name); |
| break; |
| default: |
| assert_not_reached("invalid policy"); |
| } |
| if (ifname_valid(new_name)) { |
| log_device_debug(device, "Policy *%s* yields \"%s\".", name_policy_to_string(policy), new_name); |
| *ret_name = new_name; |
| return 0; |
| } |
| } |
| |
| if (config->name) { |
| log_device_debug(device, "Policies didn't yield a name, using specified Name=%s.", config->name); |
| *ret_name = config->name; |
| return 0; |
| } |
| |
| log_device_debug(device, "Policies didn't yield a name and Name= is not given, not renaming."); |
| no_rename: |
| r = sd_device_get_sysname(device, ret_name); |
| if (r < 0) |
| return log_device_error_errno(device, r, "Failed to get sysname: %m"); |
| |
| return 0; |
| } |
| |
| static int link_config_apply_alternative_names(sd_netlink **rtnl, const LinkConfig *config, sd_device *device, const char *new_name) { |
| _cleanup_strv_free_ char **altnames = NULL, **current_altnames = NULL; |
| const char *current_name; |
| int ifindex, r; |
| |
| assert(rtnl); |
| assert(config); |
| assert(device); |
| |
| r = sd_device_get_sysname(device, ¤t_name); |
| if (r < 0) |
| return log_device_error_errno(device, r, "Failed to get sysname: %m"); |
| |
| r = sd_device_get_ifindex(device, &ifindex); |
| if (r < 0) |
| return log_device_error_errno(device, r, "Could not find ifindex: %m"); |
| |
| if (config->alternative_names) { |
| altnames = strv_copy(config->alternative_names); |
| if (!altnames) |
| return log_oom(); |
| } |
| |
| if (config->alternative_names_policy) |
| for (NamePolicy *p = config->alternative_names_policy; *p != _NAMEPOLICY_INVALID; p++) { |
| const char *n = NULL; |
| |
| switch (*p) { |
| case NAMEPOLICY_DATABASE: |
| (void) sd_device_get_property_value(device, "ID_NET_NAME_FROM_DATABASE", &n); |
| break; |
| case NAMEPOLICY_ONBOARD: |
| (void) sd_device_get_property_value(device, "ID_NET_NAME_ONBOARD", &n); |
| break; |
| case NAMEPOLICY_SLOT: |
| (void) sd_device_get_property_value(device, "ID_NET_NAME_SLOT", &n); |
| break; |
| case NAMEPOLICY_PATH: |
| (void) sd_device_get_property_value(device, "ID_NET_NAME_PATH", &n); |
| break; |
| case NAMEPOLICY_MAC: |
| (void) sd_device_get_property_value(device, "ID_NET_NAME_MAC", &n); |
| break; |
| default: |
| assert_not_reached("invalid policy"); |
| } |
| if (!isempty(n)) { |
| r = strv_extend(&altnames, n); |
| if (r < 0) |
| return log_oom(); |
| } |
| } |
| |
| if (new_name) |
| strv_remove(altnames, new_name); |
| strv_remove(altnames, current_name); |
| |
| r = rtnl_get_link_alternative_names(rtnl, ifindex, ¤t_altnames); |
| if (r < 0) |
| log_device_debug_errno(device, r, "Failed to get alternative names, ignoring: %m"); |
| |
| char **p; |
| STRV_FOREACH(p, current_altnames) |
| strv_remove(altnames, *p); |
| |
| strv_uniq(altnames); |
| strv_sort(altnames); |
| r = rtnl_set_link_alternative_names(rtnl, ifindex, altnames); |
| if (r < 0) |
| log_device_full_errno(device, r == -EOPNOTSUPP ? LOG_DEBUG : LOG_WARNING, r, |
| "Could not set AlternativeName= or apply AlternativeNamesPolicy=, ignoring: %m"); |
| |
| return 0; |
| } |
| |
| int link_config_apply(LinkConfigContext *ctx, const LinkConfig *config, sd_device *device, const char **ret_name) { |
| const char *new_name; |
| sd_device_action_t a; |
| int r; |
| |
| assert(ctx); |
| assert(config); |
| assert(device); |
| assert(ret_name); |
| |
| r = sd_device_get_action(device, &a); |
| if (r < 0) |
| return log_device_error_errno(device, r, "Failed to get ACTION= property: %m"); |
| |
| if (!IN_SET(a, SD_DEVICE_ADD, SD_DEVICE_BIND, SD_DEVICE_MOVE)) { |
| log_device_debug(device, "Skipping to apply .link settings on '%s' uevent.", device_action_to_string(a)); |
| |
| r = sd_device_get_sysname(device, ret_name); |
| if (r < 0) |
| return log_device_error_errno(device, r, "Failed to get sysname: %m"); |
| |
| return 0; |
| } |
| |
| r = link_config_apply_ethtool_settings(&ctx->ethtool_fd, config, device); |
| if (r < 0) |
| return r; |
| |
| r = link_config_apply_rtnl_settings(&ctx->rtnl, config, device); |
| if (r < 0) |
| return r; |
| |
| if (a == SD_DEVICE_MOVE) { |
| log_device_debug(device, "Skipping to apply Name= and NamePolicy= on '%s' uevent.", device_action_to_string(a)); |
| |
| r = sd_device_get_sysname(device, &new_name); |
| if (r < 0) |
| return log_device_error_errno(device, r, "Failed to get sysname: %m"); |
| } else { |
| r = link_config_generate_new_name(ctx, config, device, &new_name); |
| if (r < 0) |
| return r; |
| } |
| |
| r = link_config_apply_alternative_names(&ctx->rtnl, config, device, new_name); |
| if (r < 0) |
| return r; |
| |
| *ret_name = new_name; |
| return 0; |
| } |
| |
| int link_get_driver(LinkConfigContext *ctx, sd_device *device, char **ret) { |
| const char *name; |
| char *driver = NULL; |
| int r; |
| |
| r = sd_device_get_sysname(device, &name); |
| if (r < 0) |
| return r; |
| |
| r = ethtool_get_driver(&ctx->ethtool_fd, name, &driver); |
| if (r < 0) |
| return r; |
| |
| *ret = driver; |
| return 0; |
| } |
| |
| int config_parse_ifalias( |
| 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) { |
| |
| char **s = data; |
| |
| assert(filename); |
| assert(lvalue); |
| assert(rvalue); |
| assert(data); |
| |
| if (isempty(rvalue)) { |
| *s = mfree(*s); |
| return 0; |
| } |
| |
| if (!ascii_is_valid(rvalue)) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "Interface alias is not ASCII clean, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| if (strlen(rvalue) >= IFALIASZ) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, |
| "Interface alias is too long, ignoring assignment: %s", rvalue); |
| return 0; |
| } |
| |
| return free_and_strdup_warn(s, rvalue); |
| } |
| |
| int config_parse_rx_tx_queues( |
| 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) { |
| |
| uint32_t k, *v = data; |
| int r; |
| |
| if (isempty(rvalue)) { |
| *v = 0; |
| return 0; |
| } |
| |
| r = safe_atou32(rvalue, &k); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s=, ignoring assignment: %s.", lvalue, rvalue); |
| return 0; |
| } |
| if (k == 0 || k > 4096) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid %s=, ignoring assignment: %s.", lvalue, rvalue); |
| return 0; |
| } |
| |
| *v = k; |
| return 0; |
| } |
| |
| int config_parse_txqueuelen( |
| 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) { |
| |
| uint32_t k, *v = data; |
| int r; |
| |
| if (isempty(rvalue)) { |
| *v = UINT32_MAX; |
| return 0; |
| } |
| |
| r = safe_atou32(rvalue, &k); |
| if (r < 0) { |
| log_syntax(unit, LOG_WARNING, filename, line, r, "Failed to parse %s=, ignoring assignment: %s.", lvalue, rvalue); |
| return 0; |
| } |
| if (k == UINT32_MAX) { |
| log_syntax(unit, LOG_WARNING, filename, line, 0, "Invalid %s=, ignoring assignment: %s.", lvalue, rvalue); |
| return 0; |
| } |
| |
| *v = k; |
| return 0; |
| } |
| |
| static const char* const mac_address_policy_table[_MAC_ADDRESS_POLICY_MAX] = { |
| [MAC_ADDRESS_POLICY_PERSISTENT] = "persistent", |
| [MAC_ADDRESS_POLICY_RANDOM] = "random", |
| [MAC_ADDRESS_POLICY_NONE] = "none", |
| }; |
| |
| DEFINE_STRING_TABLE_LOOKUP(mac_address_policy, MACAddressPolicy); |
| DEFINE_CONFIG_PARSE_ENUM_WITH_DEFAULT( |
| config_parse_mac_address_policy, |
| mac_address_policy, |
| MACAddressPolicy, |
| MAC_ADDRESS_POLICY_NONE, |
| "Failed to parse MAC address policy"); |
| |
| static const char* const name_policy_table[_NAMEPOLICY_MAX] = { |
| [NAMEPOLICY_KERNEL] = "kernel", |
| [NAMEPOLICY_KEEP] = "keep", |
| [NAMEPOLICY_DATABASE] = "database", |
| [NAMEPOLICY_ONBOARD] = "onboard", |
| [NAMEPOLICY_SLOT] = "slot", |
| [NAMEPOLICY_PATH] = "path", |
| [NAMEPOLICY_MAC] = "mac", |
| }; |
| |
| DEFINE_STRING_TABLE_LOOKUP(name_policy, NamePolicy); |
| DEFINE_CONFIG_PARSE_ENUMV(config_parse_name_policy, name_policy, NamePolicy, |
| _NAMEPOLICY_INVALID, |
| "Failed to parse interface name policy"); |
| |
| static const char* const alternative_names_policy_table[_NAMEPOLICY_MAX] = { |
| [NAMEPOLICY_DATABASE] = "database", |
| [NAMEPOLICY_ONBOARD] = "onboard", |
| [NAMEPOLICY_SLOT] = "slot", |
| [NAMEPOLICY_PATH] = "path", |
| [NAMEPOLICY_MAC] = "mac", |
| }; |
| |
| DEFINE_STRING_TABLE_LOOKUP(alternative_names_policy, NamePolicy); |
| DEFINE_CONFIG_PARSE_ENUMV(config_parse_alternative_names_policy, alternative_names_policy, NamePolicy, |
| _NAMEPOLICY_INVALID, |
| "Failed to parse alternative names policy"); |