diff options
Diffstat (limited to 'src/udev/net')
| -rw-r--r-- | src/udev/net/fuzz-link-parser.c | 28 | ||||
| -rw-r--r-- | src/udev/net/fuzz-link-parser.options | 2 | ||||
| -rw-r--r-- | src/udev/net/link-config-gperf.gperf | 118 | ||||
| -rw-r--r-- | src/udev/net/link-config.c | 1143 | ||||
| -rw-r--r-- | src/udev/net/link-config.h | 115 |
5 files changed, 1406 insertions, 0 deletions
diff --git a/src/udev/net/fuzz-link-parser.c b/src/udev/net/fuzz-link-parser.c new file mode 100644 index 0000000..c809791 --- /dev/null +++ b/src/udev/net/fuzz-link-parser.c @@ -0,0 +1,28 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ + +#include "fd-util.h" +#include "fs-util.h" +#include "fuzz.h" +#include "link-config.h" +#include "tmpfile-util.h" + +int LLVMFuzzerTestOneInput(const uint8_t *data, size_t size) { + _cleanup_(link_config_ctx_freep) LinkConfigContext *ctx = NULL; + _cleanup_(unlink_tempfilep) char filename[] = "/tmp/fuzz-link-config.XXXXXX"; + _cleanup_fclose_ FILE *f = NULL; + + if (outside_size_range(size, 0, 65536)) + return 0; + + if (!getenv("SYSTEMD_LOG_LEVEL")) + log_set_max_level(LOG_CRIT); + + assert_se(fmkostemp_safe(filename, "r+", &f) == 0); + if (size != 0) + assert_se(fwrite(data, size, 1, f) == 1); + + fflush(f); + assert_se(link_config_ctx_new(&ctx) >= 0); + (void) link_load_one(ctx, filename); + return 0; +} diff --git a/src/udev/net/fuzz-link-parser.options b/src/udev/net/fuzz-link-parser.options new file mode 100644 index 0000000..678d526 --- /dev/null +++ b/src/udev/net/fuzz-link-parser.options @@ -0,0 +1,2 @@ +[libfuzzer] +max_len = 65536 diff --git a/src/udev/net/link-config-gperf.gperf b/src/udev/net/link-config-gperf.gperf new file mode 100644 index 0000000..240f16e --- /dev/null +++ b/src/udev/net/link-config-gperf.gperf @@ -0,0 +1,118 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +%{ +#if __GNUC__ >= 7 +_Pragma("GCC diagnostic ignored \"-Wimplicit-fallthrough\"") +#endif +#include <stddef.h> +#include "conf-parser.h" +#include "ethtool-util.h" +#include "link-config.h" +#include "net-condition.h" +#include "netif-sriov.h" +#include "socket-util.h" +%} +struct ConfigPerfItem; +%null_strings +%language=ANSI-C +%define slot-name section_and_lvalue +%define hash-function-name link_config_gperf_hash +%define lookup-function-name link_config_gperf_lookup +%readonly-tables +%omit-struct-type +%struct-type +%includes +%% +Match.MACAddress, config_parse_hw_addrs, 0, offsetof(LinkConfig, match.hw_addr) +Match.PermanentMACAddress, config_parse_hw_addrs, 0, offsetof(LinkConfig, match.permanent_hw_addr) +Match.OriginalName, config_parse_match_ifnames, 0, offsetof(LinkConfig, match.ifname) +Match.Path, config_parse_match_strv, 0, offsetof(LinkConfig, match.path) +Match.Driver, config_parse_match_strv, 0, offsetof(LinkConfig, match.driver) +Match.Type, config_parse_match_strv, 0, offsetof(LinkConfig, match.iftype) +Match.Kind, config_parse_match_strv, 0, offsetof(LinkConfig, match.kind) +Match.Property, config_parse_match_property, 0, offsetof(LinkConfig, match.property) +Match.Host, config_parse_net_condition, CONDITION_HOST, offsetof(LinkConfig, conditions) +Match.Virtualization, config_parse_net_condition, CONDITION_VIRTUALIZATION, offsetof(LinkConfig, conditions) +Match.KernelCommandLine, config_parse_net_condition, CONDITION_KERNEL_COMMAND_LINE, offsetof(LinkConfig, conditions) +Match.KernelVersion, config_parse_net_condition, CONDITION_KERNEL_VERSION, offsetof(LinkConfig, conditions) +Match.Credential, config_parse_net_condition, CONDITION_CREDENTIAL, offsetof(LinkConfig, conditions) +Match.Architecture, config_parse_net_condition, CONDITION_ARCHITECTURE, offsetof(LinkConfig, conditions) +Match.Firmware, config_parse_net_condition, CONDITION_FIRMWARE, offsetof(LinkConfig, conditions) +Link.Description, config_parse_string, 0, offsetof(LinkConfig, description) +Link.MACAddressPolicy, config_parse_mac_address_policy, 0, offsetof(LinkConfig, mac_address_policy) +Link.MACAddress, config_parse_hw_addr, 0, offsetof(LinkConfig, hw_addr) +Link.NamePolicy, config_parse_name_policy, 0, offsetof(LinkConfig, name_policy) +Link.Name, config_parse_ifname, 0, offsetof(LinkConfig, name) +Link.AlternativeName, config_parse_ifnames, IFNAME_VALID_ALTERNATIVE, offsetof(LinkConfig, alternative_names) +Link.AlternativeNamesPolicy, config_parse_alternative_names_policy, 0, offsetof(LinkConfig, alternative_names_policy) +Link.Alias, config_parse_ifalias, 0, offsetof(LinkConfig, alias) +Link.TransmitQueues, config_parse_rx_tx_queues, 0, offsetof(LinkConfig, txqueues) +Link.ReceiveQueues, config_parse_rx_tx_queues, 0, offsetof(LinkConfig, rxqueues) +Link.TransmitQueueLength, config_parse_txqueuelen, 0, offsetof(LinkConfig, txqueuelen) +Link.MTUBytes, config_parse_mtu, AF_UNSPEC, offsetof(LinkConfig, mtu) +Link.BitsPerSecond, config_parse_si_uint64, 0, offsetof(LinkConfig, speed) +Link.Duplex, config_parse_duplex, 0, offsetof(LinkConfig, duplex) +Link.AutoNegotiation, config_parse_tristate, 0, offsetof(LinkConfig, autonegotiation) +Link.WakeOnLan, config_parse_wol, 0, offsetof(LinkConfig, wol) +Link.WakeOnLanPassword, config_parse_wol_password, 0, 0 +Link.Port, config_parse_port, 0, offsetof(LinkConfig, port) +Link.ReceiveChecksumOffload, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_RXCSUM]) +Link.TransmitChecksumOffload, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_TXCSUM]) +Link.GenericSegmentationOffload, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_GSO]) +Link.TCPSegmentationOffload, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_TSO]) +Link.TCP6SegmentationOffload, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_TSO6]) +Link.UDPSegmentationOffload, config_parse_warn_compat, DISABLED_LEGACY, 0 +Link.GenericReceiveOffload, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_GRO]) +Link.GenericReceiveOffloadHardware, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_GRO_HW]) +Link.LargeReceiveOffload, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_LRO]) +Link.ReceiveVLANCTAGHardwareAcceleration, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_HW_VLAN_CTAG_RX]) +Link.TransmitVLANCTAGHardwareAcceleration, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_HW_VLAN_CTAG_TX]) +Link.ReceiveVLANCTAGFilter, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_HW_VLAN_CTAG_FILTER]) +Link.TransmitVLANSTAGHardwareAcceleration, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_HW_VLAN_STAG_TX]) +Link.NTupleFilter, config_parse_tristate, 0, offsetof(LinkConfig, features[NET_DEV_FEAT_NTUPLE]) +Link.RxChannels, config_parse_ring_buffer_or_channel, 0, offsetof(LinkConfig, channels.rx) +Link.TxChannels, config_parse_ring_buffer_or_channel, 0, offsetof(LinkConfig, channels.tx) +Link.OtherChannels, config_parse_ring_buffer_or_channel, 0, offsetof(LinkConfig, channels.other) +Link.CombinedChannels, config_parse_ring_buffer_or_channel, 0, offsetof(LinkConfig, channels.combined) +Link.Advertise, config_parse_advertise, 0, offsetof(LinkConfig, advertise) +Link.RxBufferSize, config_parse_ring_buffer_or_channel, 0, offsetof(LinkConfig, ring.rx) +Link.RxMiniBufferSize, config_parse_ring_buffer_or_channel, 0, offsetof(LinkConfig, ring.rx_mini) +Link.RxJumboBufferSize, config_parse_ring_buffer_or_channel, 0, offsetof(LinkConfig, ring.rx_jumbo) +Link.TxBufferSize, config_parse_ring_buffer_or_channel, 0, offsetof(LinkConfig, ring.tx) +Link.RxFlowControl, config_parse_tristate, 0, offsetof(LinkConfig, rx_flow_control) +Link.TxFlowControl, config_parse_tristate, 0, offsetof(LinkConfig, tx_flow_control) +Link.AutoNegotiationFlowControl, config_parse_tristate, 0, offsetof(LinkConfig, autoneg_flow_control) +Link.GenericSegmentOffloadMaxBytes, config_parse_iec_size, 0, offsetof(LinkConfig, gso_max_size) +Link.GenericSegmentOffloadMaxSegments, config_parse_uint32, 0, offsetof(LinkConfig, gso_max_segments) +Link.RxCoalesceSec, config_parse_coalesce_sec, 0, offsetof(LinkConfig, coalesce.rx_coalesce_usecs) +Link.RxMaxCoalescedFrames, config_parse_coalesce_u32, 0, offsetof(LinkConfig, coalesce.rx_max_coalesced_frames) +Link.RxCoalesceIrqSec, config_parse_coalesce_sec, 0, offsetof(LinkConfig, coalesce.rx_coalesce_usecs_irq) +Link.RxMaxCoalescedIrqFrames, config_parse_coalesce_u32, 0, offsetof(LinkConfig, coalesce.rx_max_coalesced_frames_irq) +Link.TxCoalesceSec, config_parse_coalesce_sec, 0, offsetof(LinkConfig, coalesce.tx_coalesce_usecs) +Link.TxMaxCoalescedFrames, config_parse_coalesce_u32, 0, offsetof(LinkConfig, coalesce.tx_max_coalesced_frames) +Link.TxCoalesceIrqSec, config_parse_coalesce_sec, 0, offsetof(LinkConfig, coalesce.tx_coalesce_usecs_irq) +Link.TxMaxCoalescedIrqFrames, config_parse_coalesce_u32, 0, offsetof(LinkConfig, coalesce.tx_max_coalesced_frames_irq) +Link.StatisticsBlockCoalesceSec, config_parse_coalesce_sec, 0, offsetof(LinkConfig, coalesce.stats_block_coalesce_usecs) +Link.UseAdaptiveRxCoalesce, config_parse_tristate, 0, offsetof(LinkConfig, coalesce.use_adaptive_rx_coalesce) +Link.UseAdaptiveTxCoalesce, config_parse_tristate, 0, offsetof(LinkConfig, coalesce.use_adaptive_tx_coalesce) +Link.CoalescePacketRateLow, config_parse_coalesce_u32, 0, offsetof(LinkConfig, coalesce.pkt_rate_low) +Link.RxCoalesceLowSec, config_parse_coalesce_sec, 0, offsetof(LinkConfig, coalesce.rx_coalesce_usecs_low) +Link.RxMaxCoalescedLowFrames, config_parse_coalesce_u32, 0, offsetof(LinkConfig, coalesce.rx_max_coalesced_frames_low) +Link.TxCoalesceLowSec, config_parse_coalesce_sec, 0, offsetof(LinkConfig, coalesce.tx_coalesce_usecs_low) +Link.TxMaxCoalescedLowFrames, config_parse_coalesce_u32, 0, offsetof(LinkConfig, coalesce.tx_max_coalesced_frames_low) +Link.CoalescePacketRateHigh, config_parse_coalesce_u32, 0, offsetof(LinkConfig, coalesce.pkt_rate_high) +Link.RxCoalesceHighSec, config_parse_coalesce_sec, 0, offsetof(LinkConfig, coalesce.rx_coalesce_usecs_high) +Link.RxMaxCoalescedHighFrames, config_parse_coalesce_u32, 0, offsetof(LinkConfig, coalesce.rx_max_coalesced_frames_high) +Link.TxCoalesceHighSec, config_parse_coalesce_sec, 0, offsetof(LinkConfig, coalesce.tx_coalesce_usecs_high) +Link.TxMaxCoalescedHighFrames, config_parse_coalesce_u32, 0, offsetof(LinkConfig, coalesce.tx_max_coalesced_frames_high) +Link.CoalescePacketRateSampleIntervalSec, config_parse_coalesce_sec, 0, offsetof(LinkConfig, coalesce.rate_sample_interval) +Link.MDI, config_parse_mdi, 0, offsetof(LinkConfig, mdi) +Link.SR-IOVVirtualFunctions, config_parse_sr_iov_num_vfs, 0, offsetof(LinkConfig, sr_iov_num_vfs) +SR-IOV.VirtualFunction, config_parse_sr_iov_uint32, 0, offsetof(LinkConfig, sr_iov_by_section) +SR-IOV.VLANId, config_parse_sr_iov_uint32, 0, offsetof(LinkConfig, sr_iov_by_section) +SR-IOV.QualityOfService, config_parse_sr_iov_uint32, 0, offsetof(LinkConfig, sr_iov_by_section) +SR-IOV.VLANProtocol, config_parse_sr_iov_vlan_proto, 0, offsetof(LinkConfig, sr_iov_by_section) +SR-IOV.MACSpoofCheck, config_parse_sr_iov_boolean, 0, offsetof(LinkConfig, sr_iov_by_section) +SR-IOV.QueryReceiveSideScaling, config_parse_sr_iov_boolean, 0, offsetof(LinkConfig, sr_iov_by_section) +SR-IOV.Trust, config_parse_sr_iov_boolean, 0, offsetof(LinkConfig, sr_iov_by_section) +SR-IOV.LinkState, config_parse_sr_iov_link_state, 0, offsetof(LinkConfig, sr_iov_by_section) +SR-IOV.MACAddress, config_parse_sr_iov_mac, 0, offsetof(LinkConfig, sr_iov_by_section) diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c new file mode 100644 index 0000000..5d28526 --- /dev/null +++ b/src/udev/net/link-config.c @@ -0,0 +1,1143 @@ +/* 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 "arphrd-util.h" +#include "conf-files.h" +#include "conf-parser.h" +#include "creds-util.h" +#include "def.h" +#include "device-private.h" +#include "device-util.h" +#include "ethtool-util.h" +#include "fd-util.h" +#include "fileio.h" +#include "link-config.h" +#include "log-link.h" +#include "memory-util.h" +#include "net-condition.h" +#include "netif-sriov.h" +#include "netif-util.h" +#include "netlink-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, configs); + int ethtool_fd; + Hashmap *stats_by_path; +}; + +static LinkConfig* link_config_free(LinkConfig *config) { + if (!config) + return NULL; + + free(config->filename); + + net_match_clear(&config->match); + condition_free_list(config->conditions); + + free(config->description); + free(config->name_policy); + free(config->name); + strv_free(config->alternative_names); + free(config->alternative_names_policy); + free(config->alias); + free(config->wol_password_file); + erase_and_free(config->wol_password); + + ordered_hashmap_free_with_destructor(config->sr_iov_by_section, sr_iov_free); + + return mfree(config); +} + +DEFINE_TRIVIAL_CLEANUP_FUNC(LinkConfig*, link_config_free); + +static void link_configs_free(LinkConfigContext *ctx) { + if (!ctx) + return; + + ctx->stats_by_path = hashmap_free(ctx->stats_by_path); + + LIST_FOREACH(configs, config, ctx->configs) + link_config_free(config); +} + +LinkConfigContext *link_config_ctx_free(LinkConfigContext *ctx) { + if (!ctx) + return NULL; + + safe_close(ctx->ethtool_fd); + 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, + }; + + *ret = TAKE_PTR(ctx); + + return 0; +} + +static int link_parse_wol_password(LinkConfig *config, const char *str) { + _cleanup_(erase_and_freep) uint8_t *p = NULL; + int r; + + assert(config); + assert(str); + + assert_cc(sizeof(struct ether_addr) == SOPASS_MAX); + + p = new(uint8_t, SOPASS_MAX); + if (!p) + return -ENOMEM; + + /* Reuse parse_ether_addr(), as their formats are equivalent. */ + r = parse_ether_addr(str, (struct ether_addr*) p); + if (r < 0) + return r; + + erase_and_free(config->wol_password); + config->wol_password = TAKE_PTR(p); + return 0; +} + +static int link_read_wol_password_from_file(LinkConfig *config) { + _cleanup_(erase_and_freep) char *password = NULL; + int r; + + assert(config); + + if (!config->wol_password_file) + return 0; + + r = read_full_file_full( + AT_FDCWD, config->wol_password_file, UINT64_MAX, SIZE_MAX, + READ_FULL_FILE_SECURE | READ_FULL_FILE_WARN_WORLD_READABLE | READ_FULL_FILE_CONNECT_SOCKET, + NULL, &password, NULL); + if (r < 0) + return r; + + return link_parse_wol_password(config, password); +} + +static int link_read_wol_password_from_cred(LinkConfig *config) { + _cleanup_free_ char *base = NULL, *cred_name = NULL; + _cleanup_(erase_and_freep) char *password = NULL; + int r; + + assert(config); + assert(config->filename); + + if (config->wol == UINT32_MAX) + return 0; /* WakeOnLan= is not specified. */ + if (!FLAGS_SET(config->wol, WAKE_MAGICSECURE)) + return 0; /* secureon is not specified in WakeOnLan=. */ + if (config->wol_password) + return 0; /* WakeOnLanPassword= is specified. */ + if (config->wol_password_file) + return 0; /* a file name is specified in WakeOnLanPassword=, but failed to read it. */ + + r = path_extract_filename(config->filename, &base); + if (r < 0) + return r; + + cred_name = strjoin(base, ".wol.password"); + if (!cred_name) + return -ENOMEM; + + r = read_credential(cred_name, (void**) &password, NULL); + if (r == -ENOENT) + r = read_credential("wol.password", (void**) &password, NULL); + if (r < 0) + return r; + + return link_parse_wol_password(config, password); +} + +static int link_adjust_wol_options(LinkConfig *config) { + int r; + + assert(config); + + r = link_read_wol_password_from_file(config); + if (r == -ENOMEM) + return log_oom(); + if (r < 0) + log_warning_errno(r, "Failed to read WakeOnLan password from %s, ignoring: %m", config->wol_password_file); + + r = link_read_wol_password_from_cred(config); + if (r == -ENOMEM) + return log_oom(); + if (r < 0) + log_warning_errno(r, "Failed to read WakeOnLan password from credential, ignoring: %m"); + + if (config->wol != UINT32_MAX && config->wol_password) + /* Enable WAKE_MAGICSECURE flag when WakeOnLanPassword=. Note that when + * WakeOnLanPassword= is set without WakeOnLan=, then ethtool_set_wol() enables + * WAKE_MAGICSECURE flag and other flags are not changed. */ + config->wol |= WAKE_MAGICSECURE; + + return 0; +} + +int link_load_one(LinkConfigContext *ctx, const char *filename) { + _cleanup_(link_config_freep) LinkConfig *config = NULL; + _cleanup_hashmap_free_ Hashmap *stats_by_path = 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 < 0) + return log_warning_errno(r, "Failed to check if \"%s\" is empty: %m", filename); + if (r > 0) { + log_debug("Skipping empty file: %s", filename); + return 0; + } + + name = strdup(filename); + if (!name) + return log_oom(); + + config = new(LinkConfig, 1); + if (!config) + return log_oom(); + + *config = (LinkConfig) { + .filename = TAKE_PTR(name), + .mac_address_policy = MAC_ADDRESS_POLICY_NONE, + .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, + .coalesce.use_adaptive_rx_coalesce = -1, + .coalesce.use_adaptive_tx_coalesce = -1, + .mdi = ETH_TP_MDI_INVALID, + .sr_iov_num_vfs = UINT32_MAX, + }; + + for (i = 0; i < ELEMENTSOF(config->features); i++) + config->features[i] = -1; + + dropin_dirname = strjoina(basename(filename), ".d"); + r = config_parse_many( + STRV_MAKE_CONST(filename), + NETWORK_DIRS, + dropin_dirname, + "Match\0" + "Link\0" + "SR-IOV\0", + config_item_perf_lookup, link_config_gperf_lookup, + CONFIG_PARSE_WARN, config, &stats_by_path, + NULL); + if (r < 0) + return r; /* config_parse_many() logs internally. */ + + if (ctx->stats_by_path) { + r = hashmap_move(ctx->stats_by_path, stats_by_path); + if (r < 0) + log_warning_errno(r, "Failed to save stats of '%s' and its drop-in configs, ignoring: %m", filename); + } else + ctx->stats_by_path = TAKE_PTR(stats_by_path); + + if (net_match_is_empty(&config->match) && !config->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(config->conditions, environ, NULL, NULL, NULL)) { + log_debug("%s: Conditions do not match the system environment, skipping.", filename); + return 0; + } + + if (IN_SET(config->mac_address_policy, MAC_ADDRESS_POLICY_PERSISTENT, MAC_ADDRESS_POLICY_RANDOM) && + config->hw_addr.length > 0) + log_warning("%s: MACAddress= in [Link] section will be ignored when MACAddressPolicy= " + "is set to \"persistent\" or \"random\".", + filename); + + r = link_adjust_wol_options(config); + if (r < 0) + return r; /* link_adjust_wol_options() logs internally. */ + + r = sr_iov_drop_invalid_sections(config->sr_iov_num_vfs, config->sr_iov_by_section); + if (r < 0) + return r; /* sr_iov_drop_invalid_sections() logs internally. */ + + log_debug("Parsed configuration file \"%s\"", filename); + + LIST_PREPEND(configs, ctx->configs, TAKE_PTR(config)); + return 0; +} + +static int device_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; + int r; + + assert(ctx); + + link_configs_free(ctx); + + 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) + (void) link_load_one(ctx, *f); + + return 0; +} + +bool link_config_should_reload(LinkConfigContext *ctx) { + _cleanup_hashmap_free_ Hashmap *stats_by_path = NULL; + int r; + + assert(ctx); + + r = config_get_stats_by_path(".link", NULL, 0, NETWORK_DIRS, /* check_dropins = */ true, &stats_by_path); + if (r < 0) { + log_warning_errno(r, "Failed to get stats of .link files, ignoring: %m"); + return true; + } + + return !stats_by_path_equal(ctx->stats_by_path, stats_by_path); +} + +Link *link_free(Link *link) { + if (!link) + return NULL; + + sd_device_unref(link->device); + free(link->kind); + free(link->driver); + return mfree(link); +} + +int link_new(LinkConfigContext *ctx, sd_netlink **rtnl, sd_device *device, Link **ret) { + _cleanup_(link_freep) Link *link = NULL; + int r; + + assert(ctx); + assert(rtnl); + assert(device); + assert(ret); + + link = new(Link, 1); + if (!link) + return -ENOMEM; + + *link = (Link) { + .device = sd_device_ref(device), + }; + + r = sd_device_get_sysname(device, &link->ifname); + if (r < 0) + return r; + + r = sd_device_get_ifindex(device, &link->ifindex); + if (r < 0) + return r; + + r = sd_device_get_action(device, &link->action); + if (r < 0) + return r; + + r = device_unsigned_attribute(device, "name_assign_type", &link->name_assign_type); + if (r < 0) + log_link_debug_errno(link, r, "Failed to get \"name_assign_type\" attribute, ignoring: %m"); + + r = device_unsigned_attribute(device, "addr_assign_type", &link->addr_assign_type); + if (r < 0) + log_link_debug_errno(link, r, "Failed to get \"addr_assign_type\" attribute, ignoring: %m"); + + r = rtnl_get_link_info(rtnl, link->ifindex, &link->iftype, &link->flags, + &link->kind, &link->hw_addr, &link->permanent_hw_addr); + if (r < 0) + return r; + + if (link->hw_addr.length > 0 && link->permanent_hw_addr.length == 0) { + r = ethtool_get_permanent_hw_addr(&ctx->ethtool_fd, link->ifname, &link->permanent_hw_addr); + if (r < 0) + log_link_debug_errno(link, r, "Failed to get permanent hardware address, ignoring: %m"); + } + + r = ethtool_get_driver(&ctx->ethtool_fd, link->ifname, &link->driver); + if (r < 0) + log_link_debug_errno(link, r, "Failed to get driver, ignoring: %m"); + + *ret = TAKE_PTR(link); + return 0; +} + +int link_get_config(LinkConfigContext *ctx, Link *link) { + int r; + + assert(ctx); + assert(link); + + /* Do not configure loopback interfaces by .link files. */ + if (link->flags & IFF_LOOPBACK) + return -ENOENT; + + LIST_FOREACH(configs, config, ctx->configs) { + r = net_match_config( + &config->match, + link->device, + &link->hw_addr, + &link->permanent_hw_addr, + link->driver, + link->iftype, + link->kind, + link->ifname, + /* alternative_names = */ NULL, + /* wlan_iftype = */ 0, + /* ssid = */ NULL, + /* bssid = */ NULL); + if (r < 0) + return r; + if (r == 0) + continue; + + if (config->match.ifname && !strv_contains(config->match.ifname, "*") && link->name_assign_type == NET_NAME_ENUM) + log_link_warning(link, "Config file %s is applied to device based on potentially unpredictable interface name.", + config->filename); + else + log_link_debug(link, "Config file %s is applied", config->filename); + + link->config = config; + return 0; + } + + return -ENOENT; +} + +static int link_apply_ethtool_settings(Link *link, int *ethtool_fd) { + LinkConfig *config; + const char *name; + int r; + + assert(link); + assert(link->config); + assert(ethtool_fd); + + config = link->config; + name = link->ifname; + + r = ethtool_set_glinksettings(ethtool_fd, name, + config->autonegotiation, config->advertise, + config->speed, config->duplex, config->port, config->mdi); + if (r < 0) { + if (config->autonegotiation >= 0) + log_link_warning_errno(link, r, "Could not %s auto negotiation, ignoring: %m", + enable_disable(config->autonegotiation)); + + if (!eqzero(config->advertise)) + log_link_warning_errno(link, r, "Could not set advertise mode, ignoring: %m"); + + if (config->speed > 0) + log_link_warning_errno(link, r, "Could not set speed to %"PRIu64"Mbps, ignoring: %m", + DIV_ROUND_UP(config->speed, 1000000)); + + if (config->duplex >= 0) + log_link_warning_errno(link, r, "Could not set duplex to %s, ignoring: %m", + duplex_to_string(config->duplex)); + + if (config->port >= 0) + log_link_warning_errno(link, r, "Could not set port to '%s', ignoring: %m", + port_to_string(config->port)); + + if (config->mdi != ETH_TP_MDI_INVALID) + log_link_warning_errno(link, r, "Could not set MDI-X to '%s', ignoring: %m", + mdi_to_string(config->mdi)); + } + + r = ethtool_set_wol(ethtool_fd, name, config->wol, config->wol_password); + if (r < 0) { + _cleanup_free_ char *str = NULL; + + (void) wol_options_to_string_alloc(config->wol, &str); + log_link_warning_errno(link, r, "Could not set WakeOnLan%s%s, ignoring: %m", + isempty(str) ? "" : " to ", strempty(str)); + } + + r = ethtool_set_features(ethtool_fd, name, config->features); + if (r < 0) + log_link_warning_errno(link, r, "Could not set offload features, ignoring: %m"); + + r = ethtool_set_channels(ethtool_fd, name, &config->channels); + if (r < 0) + log_link_warning_errno(link, r, "Could not set channels, ignoring: %m"); + + r = ethtool_set_nic_buffer_size(ethtool_fd, name, &config->ring); + if (r < 0) + log_link_warning_errno(link, 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_link_warning_errno(link, r, "Could not set flow control, ignoring: %m"); + + r = ethtool_set_nic_coalesce_settings(ethtool_fd, name, &config->coalesce); + if (r < 0) + log_link_warning_errno(link, r, "Could not set coalesce settings, ignoring: %m"); + + return 0; +} + +static bool hw_addr_is_valid(Link *link, const struct hw_addr_data *hw_addr) { + assert(link); + assert(hw_addr); + + switch (link->iftype) { + case ARPHRD_ETHER: + /* Refuse all zero and all 0xFF. */ + assert(hw_addr->length == ETH_ALEN); + return !ether_addr_is_null(&hw_addr->ether) && !ether_addr_is_broadcast(&hw_addr->ether); + + case ARPHRD_INFINIBAND: + /* The last 8 bytes cannot be zero*/ + assert(hw_addr->length == INFINIBAND_ALEN); + return !memeqzero(hw_addr->bytes + INFINIBAND_ALEN - 8, 8); + + default: + assert_not_reached(); + } +} + +static int link_generate_new_hw_addr(Link *link, struct hw_addr_data *ret) { + struct hw_addr_data hw_addr = HW_ADDR_NULL; + bool is_static = false; + uint8_t *p; + size_t len; + int r; + + assert(link); + assert(link->config); + assert(link->device); + assert(ret); + + if (link->hw_addr.length == 0) + goto finalize; + + if (link->config->mac_address_policy == MAC_ADDRESS_POLICY_NONE) { + log_link_debug(link, "Using static MAC address."); + hw_addr = link->config->hw_addr; + is_static = true; + goto finalize; + } + + if (!IN_SET(link->iftype, ARPHRD_ETHER, ARPHRD_INFINIBAND)) + goto finalize; + + switch (link->addr_assign_type) { + case NET_ADDR_SET: + log_link_debug(link, "MAC address on the device already set by userspace."); + goto finalize; + case NET_ADDR_STOLEN: + log_link_debug(link, "MAC address on the device already set based on another device."); + goto finalize; + case NET_ADDR_RANDOM: + case NET_ADDR_PERM: + break; + default: + log_link_warning(link, "Unknown addr_assign_type %u, ignoring", link->addr_assign_type); + goto finalize; + } + + if ((link->config->mac_address_policy == MAC_ADDRESS_POLICY_RANDOM) == (link->addr_assign_type == NET_ADDR_RANDOM)) { + log_link_debug(link, "MAC address on the device already matches policy \"%s\".", + mac_address_policy_to_string(link->config->mac_address_policy)); + goto finalize; + } + + hw_addr = (struct hw_addr_data) { + .length = arphrd_to_hw_addr_len(link->iftype), + }; + + switch (link->iftype) { + case ARPHRD_ETHER: + p = hw_addr.bytes; + len = hw_addr.length; + break; + case ARPHRD_INFINIBAND: + p = hw_addr.bytes + INFINIBAND_ALEN - 8; + len = 8; + break; + default: + assert_not_reached(); + } + + if (link->config->mac_address_policy == MAC_ADDRESS_POLICY_RANDOM) + /* 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. */ + for (;;) { + random_bytes(p, len); + if (hw_addr_is_valid(link, &hw_addr)) + break; + } + + else { + uint64_t result; + + r = net_get_unique_predictable_data(link->device, + naming_scheme_has(NAMING_STABLE_VIRTUAL_MACS), + &result); + if (r < 0) + return log_link_warning_errno(link, r, "Could not generate persistent MAC address: %m"); + + assert(len <= sizeof(result)); + memcpy(p, &result, len); + if (!hw_addr_is_valid(link, &hw_addr)) + return log_link_warning_errno(link, SYNTHETIC_ERRNO(EINVAL), + "Could not generate valid persistent MAC address: %m"); + } + +finalize: + + r = net_verify_hardware_address(link->ifname, is_static, link->iftype, &link->hw_addr, &hw_addr); + if (r < 0) + return r; + + if (hw_addr_equal(&link->hw_addr, &hw_addr)) { + *ret = HW_ADDR_NULL; + return 0; + } + + if (hw_addr.length > 0) + log_link_debug(link, "Applying %s MAC address: %s", + link->config->mac_address_policy == MAC_ADDRESS_POLICY_NONE ? "static" : + mac_address_policy_to_string(link->config->mac_address_policy), + HW_ADDR_TO_STR(&hw_addr)); + + *ret = hw_addr; + return 0; +} + +static int link_apply_rtnl_settings(Link *link, sd_netlink **rtnl) { + struct hw_addr_data hw_addr = {}; + LinkConfig *config; + int r; + + assert(link); + assert(link->config); + assert(rtnl); + + config = link->config; + + (void) link_generate_new_hw_addr(link, &hw_addr); + + r = rtnl_set_link_properties(rtnl, link->ifindex, config->alias, &hw_addr, + config->txqueues, config->rxqueues, config->txqueuelen, + config->mtu, config->gso_max_size, config->gso_max_segments); + if (r < 0) + log_link_warning_errno(link, r, + "Could not set Alias=, MACAddress=/MACAddressPolicy=, " + "TransmitQueues=, ReceiveQueues=, TransmitQueueLength=, MTUBytes=, " + "GenericSegmentOffloadMaxBytes= or GenericSegmentOffloadMaxSegments=, " + "ignoring: %m"); + + return 0; +} + +static bool enable_name_policy(void) { + static int cached = -1; + bool b; + int r; + + if (cached >= 0) + return cached; + + r = proc_cmdline_get_bool("net.ifnames", &b); + if (r < 0) + log_warning_errno(r, "Failed to parse net.ifnames= kernel command line option, ignoring: %m"); + if (r <= 0) + return (cached = true); + + if (!b) + log_info("Network interface NamePolicy= disabled on kernel command line."); + + return (cached = b); +} + +static int link_generate_new_name(Link *link) { + LinkConfig *config; + sd_device *device; + + assert(link); + assert(link->config); + assert(link->device); + + config = link->config; + device = link->device; + + if (link->action == SD_DEVICE_MOVE) { + log_link_debug(link, "Skipping to apply Name= and NamePolicy= on '%s' uevent.", + device_action_to_string(link->action)); + goto no_rename; + } + + if (IN_SET(link->name_assign_type, NET_NAME_USER, NET_NAME_RENAMED) && + !naming_scheme_has(NAMING_ALLOW_RERENAMES)) { + log_link_debug(link, "Device already has a name given by userspace, not renaming."); + goto no_rename; + } + + if (enable_name_policy() && config->name_policy) + for (NamePolicy *policy = config->name_policy; *policy != _NAMEPOLICY_INVALID; policy++) { + const char *new_name = NULL; + + switch (*policy) { + case NAMEPOLICY_KERNEL: + if (link->name_assign_type != NET_NAME_PREDICTABLE) + continue; + + /* The kernel claims to have given a predictable name, keep it. */ + log_link_debug(link, "Policy *%s*: keeping predictable kernel name", + name_policy_to_string(*policy)); + goto no_rename; + case NAMEPOLICY_KEEP: + if (!IN_SET(link->name_assign_type, NET_NAME_USER, NET_NAME_RENAMED)) + continue; + + log_link_debug(link, "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(); + } + if (ifname_valid(new_name)) { + log_link_debug(link, "Policy *%s* yields \"%s\".", name_policy_to_string(*policy), new_name); + link->new_name = new_name; + return 0; + } + } + + if (link->config->name) { + log_link_debug(link, "Policies didn't yield a name, using specified Name=%s.", link->config->name); + link->new_name = link->config->name; + return 0; + } + + log_link_debug(link, "Policies didn't yield a name and Name= is not given, not renaming."); +no_rename: + link->new_name = link->ifname; + return 0; +} + +static int link_apply_alternative_names(Link *link, sd_netlink **rtnl) { + _cleanup_strv_free_ char **altnames = NULL, **current_altnames = NULL; + LinkConfig *config; + sd_device *device; + int r; + + assert(link); + assert(link->config); + assert(link->device); + assert(rtnl); + + config = link->config; + device = link->device; + + 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(); + } + if (!isempty(n)) { + r = strv_extend(&altnames, n); + if (r < 0) + return log_oom(); + } + } + + strv_remove(altnames, link->ifname); + + r = rtnl_get_link_alternative_names(rtnl, link->ifindex, ¤t_altnames); + if (r < 0) + log_link_debug_errno(link, r, "Failed to get alternative names, ignoring: %m"); + + STRV_FOREACH(p, current_altnames) + strv_remove(altnames, *p); + + strv_uniq(altnames); + strv_sort(altnames); + r = rtnl_set_link_alternative_names(rtnl, link->ifindex, altnames); + if (r < 0) + log_link_full_errno(link, r == -EOPNOTSUPP ? LOG_DEBUG : LOG_WARNING, r, + "Could not set AlternativeName= or apply AlternativeNamesPolicy=, ignoring: %m"); + + return 0; +} + +static int sr_iov_configure(Link *link, sd_netlink **rtnl, SRIOV *sr_iov) { + _cleanup_(sd_netlink_message_unrefp) sd_netlink_message *req = NULL; + int r; + + assert(link); + assert(rtnl); + assert(link->ifindex > 0); + + if (!*rtnl) { + r = sd_netlink_open(rtnl); + if (r < 0) + return r; + } + + r = sd_rtnl_message_new_link(*rtnl, &req, RTM_SETLINK, link->ifindex); + if (r < 0) + return r; + + r = sr_iov_set_netlink_message(sr_iov, req); + if (r < 0) + return r; + + r = sd_netlink_call(*rtnl, req, 0, NULL); + if (r < 0) + return r; + + return 0; +} + +static int link_apply_sr_iov_config(Link *link, sd_netlink **rtnl) { + SRIOV *sr_iov; + uint32_t n; + int r; + + assert(link); + assert(link->config); + assert(link->device); + + r = sr_iov_set_num_vfs(link->device, link->config->sr_iov_num_vfs, link->config->sr_iov_by_section); + if (r < 0) + log_link_warning_errno(link, r, "Failed to set the number of SR-IOV virtual functions, ignoring: %m"); + + if (ordered_hashmap_isempty(link->config->sr_iov_by_section)) + return 0; + + r = sr_iov_get_num_vfs(link->device, &n); + if (r < 0) { + log_link_warning_errno(link, r, "Failed to get the number of SR-IOV virtual functions, ignoring [SR-IOV] sections: %m"); + return 0; + } + if (n == 0) { + log_link_warning(link, "No SR-IOV virtual function exists, ignoring [SR-IOV] sections: %m"); + return 0; + } + + ORDERED_HASHMAP_FOREACH(sr_iov, link->config->sr_iov_by_section) { + if (sr_iov->vf >= n) { + log_link_warning(link, "SR-IOV virtual function %"PRIu32" does not exist, ignoring.", sr_iov->vf); + continue; + } + + r = sr_iov_configure(link, rtnl, sr_iov); + if (r < 0) + log_link_warning_errno(link, r, + "Failed to configure SR-IOV virtual function %"PRIu32", ignoring: %m", + sr_iov->vf); + } + + return 0; +} + +int link_apply_config(LinkConfigContext *ctx, sd_netlink **rtnl, Link *link) { + int r; + + assert(ctx); + assert(rtnl); + assert(link); + + if (!IN_SET(link->action, SD_DEVICE_ADD, SD_DEVICE_BIND, SD_DEVICE_MOVE)) { + log_link_debug(link, "Skipping to apply .link settings on '%s' uevent.", + device_action_to_string(link->action)); + + link->new_name = link->ifname; + return 0; + } + + r = link_apply_ethtool_settings(link, &ctx->ethtool_fd); + if (r < 0) + return r; + + r = link_apply_rtnl_settings(link, rtnl); + if (r < 0) + return r; + + r = link_generate_new_name(link); + if (r < 0) + return r; + + r = link_apply_alternative_names(link, rtnl); + if (r < 0) + return r; + + r = link_apply_sr_iov_config(link, rtnl); + if (r < 0) + return r; + + 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 = ASSERT_PTR(data); + + assert(filename); + assert(lvalue); + assert(rvalue); + + 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; +} + +int config_parse_wol_password( + 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) { + + LinkConfig *config = ASSERT_PTR(userdata); + int r; + + assert(filename); + assert(lvalue); + assert(rvalue); + + if (isempty(rvalue)) { + config->wol_password = erase_and_free(config->wol_password); + config->wol_password_file = mfree(config->wol_password_file); + return 0; + } + + if (path_is_absolute(rvalue) && path_is_safe(rvalue)) { + config->wol_password = erase_and_free(config->wol_password); + return free_and_strdup_warn(&config->wol_password_file, rvalue); + } + + warn_file_is_world_accessible(filename, NULL, unit, line); + + r = link_parse_wol_password(config, rvalue); + if (r == -ENOMEM) + return log_oom(); + if (r < 0) { + log_syntax(unit, LOG_WARNING, filename, line, r, + "Failed to parse %s=, ignoring assignment: %s.", lvalue, rvalue); + return 0; + } + + config->wol_password_file = mfree(config->wol_password_file); + 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"); + +DEFINE_CONFIG_PARSE_ENUMV(config_parse_name_policy, name_policy, NamePolicy, + _NAMEPOLICY_INVALID, + "Failed to parse interface name policy"); + +DEFINE_CONFIG_PARSE_ENUMV(config_parse_alternative_names_policy, alternative_names_policy, NamePolicy, + _NAMEPOLICY_INVALID, + "Failed to parse alternative names policy"); diff --git a/src/udev/net/link-config.h b/src/udev/net/link-config.h new file mode 100644 index 0000000..ea9f560 --- /dev/null +++ b/src/udev/net/link-config.h @@ -0,0 +1,115 @@ +/* SPDX-License-Identifier: LGPL-2.1-or-later */ +#pragma once + +#include "sd-device.h" +#include "sd-netlink.h" + +#include "condition.h" +#include "conf-parser.h" +#include "ethtool-util.h" +#include "hashmap.h" +#include "list.h" +#include "net-condition.h" +#include "netif-naming-scheme.h" + +typedef struct LinkConfigContext LinkConfigContext; +typedef struct LinkConfig LinkConfig; + +typedef enum MACAddressPolicy { + MAC_ADDRESS_POLICY_PERSISTENT, + MAC_ADDRESS_POLICY_RANDOM, + MAC_ADDRESS_POLICY_NONE, + _MAC_ADDRESS_POLICY_MAX, + _MAC_ADDRESS_POLICY_INVALID = -EINVAL, +} MACAddressPolicy; + +typedef struct Link { + int ifindex; + const char *ifname; + const char *new_name; + + LinkConfig *config; + sd_device *device; + sd_device_action_t action; + + char *kind; + char *driver; + uint16_t iftype; + uint32_t flags; + struct hw_addr_data hw_addr; + struct hw_addr_data permanent_hw_addr; + unsigned name_assign_type; + unsigned addr_assign_type; +} Link; + +struct LinkConfig { + char *filename; + + NetMatch match; + LIST_HEAD(Condition, conditions); + + char *description; + struct hw_addr_data hw_addr; + MACAddressPolicy mac_address_policy; + NamePolicy *name_policy; + NamePolicy *alternative_names_policy; + char *name; + char **alternative_names; + char *alias; + uint32_t txqueues; + uint32_t rxqueues; + uint32_t txqueuelen; + uint32_t mtu; + uint32_t gso_max_segments; + size_t gso_max_size; + uint64_t speed; + Duplex duplex; + int autonegotiation; + uint32_t advertise[N_ADVERTISE]; + uint32_t wol; + char *wol_password_file; + uint8_t *wol_password; + NetDevPort port; + int features[_NET_DEV_FEAT_MAX]; + netdev_channels channels; + netdev_ring_param ring; + int rx_flow_control; + int tx_flow_control; + int autoneg_flow_control; + netdev_coalesce_param coalesce; + uint8_t mdi; + + uint32_t sr_iov_num_vfs; + OrderedHashmap *sr_iov_by_section; + + LIST_FIELDS(LinkConfig, configs); +}; + +int link_config_ctx_new(LinkConfigContext **ret); +LinkConfigContext* link_config_ctx_free(LinkConfigContext *ctx); +DEFINE_TRIVIAL_CLEANUP_FUNC(LinkConfigContext*, link_config_ctx_free); + +int link_load_one(LinkConfigContext *ctx, const char *filename); +int link_config_load(LinkConfigContext *ctx); +bool link_config_should_reload(LinkConfigContext *ctx); + +int link_new(LinkConfigContext *ctx, sd_netlink **rtnl, sd_device *device, Link **ret); +Link *link_free(Link *link); +DEFINE_TRIVIAL_CLEANUP_FUNC(Link*, link_free); + +int link_get_config(LinkConfigContext *ctx, Link *link); +int link_apply_config(LinkConfigContext *ctx, sd_netlink **rtnl, Link *link); + +const char *mac_address_policy_to_string(MACAddressPolicy p) _const_; +MACAddressPolicy mac_address_policy_from_string(const char *p) _pure_; + +/* gperf lookup function */ +const struct ConfigPerfItem* link_config_gperf_lookup(const char *key, GPERF_LEN_TYPE length); + +CONFIG_PARSER_PROTOTYPE(config_parse_ifalias); +CONFIG_PARSER_PROTOTYPE(config_parse_rx_tx_queues); +CONFIG_PARSER_PROTOTYPE(config_parse_txqueuelen); +CONFIG_PARSER_PROTOTYPE(config_parse_wol_password); +CONFIG_PARSER_PROTOTYPE(config_parse_mac_address_policy); +CONFIG_PARSER_PROTOTYPE(config_parse_name_policy); +CONFIG_PARSER_PROTOTYPE(config_parse_alternative_names_policy); |