d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include <netinet/ether.h>

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include <net/if.h>

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "sd-id128.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "link-config.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "ethtool-util.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "libudev-private.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "sd-rtnl.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "util.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "log.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "strv.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "path-util.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "conf-parser.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "conf-files.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "fileio.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering#include "hashmap.h"

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringstruct link_config_ctx {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering LIST_HEAD(link_config, links);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering int ethtool_fd;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering sd_rtnl *rtnl;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering char **link_dirs;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering usec_t link_dirs_ts_usec;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering};

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringint link_config_ctx_new(link_config_ctx **ret) {

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering link_config_ctx *ctx;

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering int r;

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!ret)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return -EINVAL;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering ctx = new0(link_config_ctx, 1);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!ctx)

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering return -ENOMEM;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = ethtool_connect(&ctx->ethtool_fd);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link_config_ctx_free(ctx);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = sd_rtnl_open(0, &ctx->rtnl);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link_config_ctx_free(ctx);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering LIST_HEAD_INIT(ctx->links);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering ctx->link_dirs = strv_new("/etc/systemd/network",

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering "/run/systemd/network",

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering "/usr/lib/systemd/network",

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering NULL);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!ctx->link_dirs) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_error("failed to build link config directory array");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link_config_ctx_free(ctx);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return -ENOMEM;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!path_strv_canonicalize_uniq(ctx->link_dirs)) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_error("failed to canonicalize link config directories\n");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link_config_ctx_free(ctx);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return -ENOMEM;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering *ret = ctx;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringstatic void link_configs_free(link_config_ctx *ctx) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link_config *link, *link_next;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!ctx)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering LIST_FOREACH_SAFE(links, link, link_next, ctx->links) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering free(link->filename);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering free(link->match_path);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering free(link->match_driver);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering free(link->match_type);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering free(link->description);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering free(link);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringvoid link_config_ctx_free(link_config_ctx *ctx) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!ctx)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (ctx->ethtool_fd >= 0)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering close_nointr_nofail(ctx->ethtool_fd);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering sd_rtnl_unref(ctx->rtnl);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering strv_free(ctx->link_dirs);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link_configs_free(ctx);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering free(ctx);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering return;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringstatic int load_link(link_config_ctx *ctx, const char *filename) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link_config *link;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering FILE *file;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering int r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering file = fopen(filename, "re");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!file) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (errno == ENOENT)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering else

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return errno;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link = new0(link_config, 1);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!link) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = log_oom();

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering goto failure;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link->mac_policy = _MACPOLICY_INVALID;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link->wol = _WOL_INVALID;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link->duplex = _DUP_INVALID;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = config_parse(NULL, filename, file, "Match\0Link\0Ethernet\0", config_item_perf_lookup,

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering (void*) link_config_gperf_lookup, false, false, link);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_warning("Colud not parse config file %s: %s", filename, strerror(-r));

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering goto failure;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering } else

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_info("Parsed configuration file %s", filename);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link->filename = strdup(filename);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering LIST_PREPEND(links, ctx->links, link);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringfailure:

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering free(link);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringint link_config_load(link_config_ctx *ctx) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering int r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering char **files, **f;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link_configs_free(ctx);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering /* update timestamp */

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering paths_check_timestamp(ctx->link_dirs, &ctx->link_dirs_ts_usec, true);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = conf_files_list_strv(&files, ".link", NULL, (const char **)ctx->link_dirs);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_error("failed to enumerate link files: %s", strerror(-r));

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering STRV_FOREACH_BACKWARDS(f, files) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = load_link(ctx, *f);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringbool link_config_should_reload(link_config_ctx *ctx) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return paths_check_timestamp(ctx->link_dirs, &ctx->link_dirs_ts_usec, false);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringstatic bool match_config(link_config *match, struct udev_device *device) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering const char *property;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (match->match_mac) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering property = udev_device_get_sysattr_value(device, "address");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!property || memcmp(match->match_mac, ether_aton(property), ETH_ALEN)) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_debug("Device MAC address (%s) did not match MACAddress=%s",

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering property, ether_ntoa(match->match_mac));

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (match->match_path) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering property = udev_device_get_property_value(device, "ID_PATH");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!streq_ptr(match->match_path, property)) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_debug("Device's persistent path (%s) did not match Path=%s",

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering property, match->match_path);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (match->match_driver) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering property = udev_device_get_driver(device);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!streq_ptr(match->match_driver, property)) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_debug("Device driver (%s) did not match Driver=%s",

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering property, match->match_driver);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (match->match_type) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering property = udev_device_get_devtype(device);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!streq_ptr(match->match_type, property)) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_debug("Device type (%s) did not match Type=%s",

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering property, match->match_type);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 1;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringint link_config_get(link_config_ctx *ctx, struct udev_device *device, link_config **ret) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering link_config *link;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering LIST_FOREACH(links, link, ctx->links) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!match_config(link, device)) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_info("Config file %s does not apply to device %s", link->filename, udev_device_get_sysname(device));

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering } else {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_info("Config file %s applies to device %s", link->filename, udev_device_get_sysname(device));

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering *ret = link;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return -ENOENT;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringstatic int rtnl_set_properties(sd_rtnl *rtnl, int ifindex, const char *name, const struct ether_addr *mac, unsigned int mtu) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering _cleanup_sd_rtnl_message_unref_ sd_rtnl_message *message;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering bool need_update = false;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering int r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering assert(rtnl);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering assert(ifindex > 0);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = sd_rtnl_message_link_new(RTM_NEWLINK, ifindex, 0, 0, &message);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (name) {

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek r = sd_rtnl_message_append(message, IFLA_IFNAME, name);

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek if (r < 0)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering need_update = true;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (mac) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = sd_rtnl_message_append(message, IFLA_ADDRESS, mac);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering need_update = true;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (mtu > 0) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = sd_rtnl_message_append(message, IFLA_MTU, &mtu);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering need_update = true;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (need_update) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = sd_rtnl_send_with_reply_and_block(rtnl, message, 5 * USEC_PER_SEC, NULL);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

7850b3b83791ba0e2377ba40383c5abc258b839dKay Sievers }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringstatic bool enable_name_policy(void) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering _cleanup_free_ char *line;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering char *w, *state;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering int r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering size_t l;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = read_one_line_file("/proc/cmdline", &line);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return true; /* something is very wrong, let's not make it worse */

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek }

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering FOREACH_WORD_QUOTED(w, l, line, state)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (strneq(w, "net.ifnames=0", l))

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return false;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return true;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringstatic bool mac_is_random(struct udev_device *device) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering const char *s;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering int type;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering s = udev_device_get_sysattr_value(device, "addr_assign_type");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!s)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return -EINVAL;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering type = strtoul(s, NULL, 0);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering /* check for NET_ADDR_RANDOM */

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return type == 1;

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek}

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmekstatic bool mac_is_permanent(struct udev_device *device) {

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek const char *s;

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek int type;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek s = udev_device_get_sysattr_value(device, "addr_assign_type");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!s)

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek return -EINVAL;

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek type = strtoul(s, NULL, 0);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering /* check for NET_ADDR_PERM */

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return type == 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poetteringstatic int get_mac(struct udev_device *device, bool want_random, struct ether_addr *mac) {

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering unsigned int seed;

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering int r, i;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (want_random)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering seed = random_u();

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek else {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering const char *name;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering sd_id128_t machine;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering char machineid_buf[33];

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering const char *seed_str;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek /* fetch some persistent data unique (on this machine) to this device */

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering name = udev_device_get_property_value(device, "ID_NET_NAME_ONBOARD");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!name) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering name = udev_device_get_property_value(device, "ID_NET_NAME_SLOT");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!name) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering name = udev_device_get_property_value(device, "ID_NET_NAME_PATH");

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek if (!name)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return -1;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering /* fetch some persistent data unique to this machine */

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = sd_id128_get_machine(&machine);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0)

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek return -1;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering /* combine the data */

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering seed_str = strappenda(name, sd_id128_to_string(machine, machineid_buf));

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering /* hash to get seed */

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek seed = string_hash_func(seed_str);

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering srandom(seed);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering for(i = 0; i < ETH_ALEN; i++) {

943aad8ca57a6b5c49c4ea60f9e8c13bf9b20e6cZbigniew Jędrzejewski-Szmek mac->ether_addr_octet[i] = random();

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek }

80343dc19a9bcd703275ad2ad88f43e5310559d6Zbigniew Jędrzejewski-Szmek

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering /* see eth_random_addr in the kernel */

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering mac->ether_addr_octet[0] &= 0xfe; /* clear multicast bit */

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering mac->ether_addr_octet[0] |= 0x02; /* set local assignment bit (IEEE802) */

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poetteringint link_config_apply(link_config_ctx *ctx, link_config *config, struct udev_device *device) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering const char *name;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering const char *new_name = NULL;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering struct ether_addr generated_mac;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering struct ether_addr *mac = NULL;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering int r, ifindex;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering name = udev_device_get_sysname(device);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!name)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return -EINVAL;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_info("Configuring %s", name);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (config->description) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = udev_device_set_sysattr_value(device, "ifalias",

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering config->description);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_warning("Could not set description of %s to '%s': %s",

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering name, config->description, strerror(-r));

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

4ec24515daa780118709e04cd78dae93f25a8428Zbigniew Jędrzejewski-Szmek

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = ethtool_set_speed(ctx->ethtool_fd, name, config->speed, config->duplex);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_warning("Could not set speed or duplex of %s to %u Mbytes (%s): %s",

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering name, config->speed, duplex_to_string(config->duplex), strerror(-r));

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = ethtool_set_wol(ctx->ethtool_fd, name, config->wol);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_warning("Could not set WakeOnLan of %s to %s: %s",

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering name, wol_to_string(config->wol), strerror(-r));

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering ifindex = udev_device_get_ifindex(device);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (ifindex <= 0) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_warning("Could not find ifindex");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return -ENODEV;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (config->name_policy && enable_name_policy()) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering NamePolicy *policy;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering for (policy = config->name_policy; !new_name && *policy != _NAMEPOLICY_INVALID; policy++) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering switch (*policy) {

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering case NAMEPOLICY_ONBOARD:

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering new_name = udev_device_get_property_value(device, "ID_NET_NAME_ONBOARD");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering break;

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering case NAMEPOLICY_SLOT:

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering new_name = udev_device_get_property_value(device, "ID_NET_NAME_SLOT");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering break;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering case NAMEPOLICY_PATH:

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering new_name = udev_device_get_property_value(device, "ID_NET_NAME_PATH");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering break;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering case NAMEPOLICY_MAC:

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering new_name = udev_device_get_property_value(device, "ID_NET_NAME_MAC");

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering break;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering default:

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering break;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!new_name && config->name) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering new_name = config->name;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering switch (config->mac_policy) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering case MACPOLICY_PERSISTENT:

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!mac_is_permanent(device)) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = get_mac(device, false, &generated_mac);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering mac = &generated_mac;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering break;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering case MACPOLICY_RANDOM:

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (!mac_is_random(device)) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = get_mac(device, true, &generated_mac);

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering if (r < 0)

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering mac = &generated_mac;

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering break;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering default:

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering mac = config->mac;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering r = rtnl_set_properties(ctx->rtnl, ifindex, new_name, mac, config->mtu);

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering if (r < 0) {

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering log_warning("Could not set Name, MACAddress or MTU on %s: %s", name, strerror(-r));

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return r;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering }

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering return 0;

d4205751d4643c272059a3728045929dd0e5e800Lennart Poettering}

83f6936a018b08880670838756e0f4e9ea98b4a7Lennart Poettering