1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include <netinet/ether.h>

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include <linux/netdevice.h>

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "sd-id128.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "missing.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "link-config.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "ethtool-util.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "libudev-private.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "sd-rtnl.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "util.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "log.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "strv.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "path-util.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "conf-parser.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "conf-files.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "fileio.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "hashmap.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "rtnl-util.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "network-internal.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#include "siphash24.h"

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringstruct link_config_ctx {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering LIST_HEAD(link_config, links);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering int ethtool_fd;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering bool enable_name_policy;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering sd_rtnl *rtnl;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering usec_t link_dirs_ts_usec;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering};

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringstatic const char* const link_dirs[] = {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering "/etc/systemd/network",

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering "/run/systemd/network",

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering "/usr/lib/systemd/network",

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#ifdef HAVE_SPLIT_USR

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering "/lib/systemd/network",

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering#endif

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering NULL};

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringstatic void link_config_free(link_config *link) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!link)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->filename);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->match_mac);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->match_path);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->match_driver);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->match_type);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->match_name);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->match_host);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->match_virt);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->match_kernel);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->match_arch);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->description);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->mac);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->name_policy);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->name);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link->alias);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(link);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart PoetteringDEFINE_TRIVIAL_CLEANUP_FUNC(link_config*, link_config_free);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringstatic void link_configs_free(link_config_ctx *ctx) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link_config *link, *link_next;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!ctx)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering LIST_FOREACH_SAFE(links, link, link_next, ctx->links)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link_config_free(link);

aba8b84e8d72224445b67646974b9dabc0972187Dave Reisner}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringvoid link_config_ctx_free(link_config_ctx *ctx) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!ctx)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering safe_close(ctx->ethtool_fd);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering sd_rtnl_unref(ctx->rtnl);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link_configs_free(ctx);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering free(ctx);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart PoetteringDEFINE_TRIVIAL_CLEANUP_FUNC(link_config_ctx*, link_config_ctx_free);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringint link_config_ctx_new(link_config_ctx **ret) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering _cleanup_(link_config_ctx_freep) link_config_ctx *ctx = NULL;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!ret)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -EINVAL;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering ctx = new0(link_config_ctx, 1);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!ctx)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -ENOMEM;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering LIST_HEAD_INIT(ctx->links);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering ctx->ethtool_fd = -1;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering ctx->enable_name_policy = true;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering *ret = ctx;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering ctx = NULL;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringstatic int load_link(link_config_ctx *ctx, const char *filename) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering _cleanup_(link_config_freep) link_config *link = NULL;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering _cleanup_fclose_ FILE *file = NULL;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering int r;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert(ctx);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert(filename);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering file = fopen(filename, "re");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!file) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (errno == ENOENT)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering else

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -errno;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering }

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (null_or_empty_fd(fileno(file))) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering log_debug("Skipping empty file: %s", filename);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering }

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link = new0(link_config, 1);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!link)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return log_oom();

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link->mac_policy = _MACPOLICY_INVALID;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link->wol = _WOL_INVALID;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link->duplex = _DUP_INVALID;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering r = config_parse(NULL, filename, file,

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering "Match\0Link\0Ethernet\0",

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering config_item_perf_lookup, link_config_gperf_lookup,

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering false, false, true, link);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (r < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return r;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering else

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering log_debug("Parsed configuration file %s", filename);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link->filename = strdup(filename);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering LIST_PREPEND(links, ctx->links, link);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link = NULL;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringstatic bool enable_name_policy(void) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering _cleanup_free_ char *line = NULL;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering const char *word, *state;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering int r;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering size_t l;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering r = proc_cmdline(&line);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (r < 0) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering log_warning_errno(r, "Failed to read /proc/cmdline, ignoring: %m");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return true;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering }

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering FOREACH_WORD_QUOTED(word, l, line, state)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (strneq(word, "net.ifnames=0", l))

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return false;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return true;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringint link_config_load(link_config_ctx *ctx) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering int r;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering _cleanup_strv_free_ char **files;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering char **f;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link_configs_free(ctx);

943aca8efb39453e3994ccdd1e08534b788c5aeeLennart Poettering

943aca8efb39453e3994ccdd1e08534b788c5aeeLennart Poettering if (!enable_name_policy()) {

943aca8efb39453e3994ccdd1e08534b788c5aeeLennart Poettering ctx->enable_name_policy = false;

943aca8efb39453e3994ccdd1e08534b788c5aeeLennart Poettering log_info("Network interface NamePolicy= disabled on kernel command line, ignoring.");

943aca8efb39453e3994ccdd1e08534b788c5aeeLennart Poettering }

943aca8efb39453e3994ccdd1e08534b788c5aeeLennart Poettering

943aca8efb39453e3994ccdd1e08534b788c5aeeLennart Poettering /* update timestamp */

943aca8efb39453e3994ccdd1e08534b788c5aeeLennart Poettering paths_check_timestamp(link_dirs, &ctx->link_dirs_ts_usec, true);

943aca8efb39453e3994ccdd1e08534b788c5aeeLennart Poettering

943aca8efb39453e3994ccdd1e08534b788c5aeeLennart Poettering r = conf_files_list_strv(&files, ".link", NULL, link_dirs);

943aca8efb39453e3994ccdd1e08534b788c5aeeLennart Poettering if (r < 0)

943aca8efb39453e3994ccdd1e08534b788c5aeeLennart Poettering return log_error_errno(r, "failed to enumerate link files: %m");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering STRV_FOREACH_BACKWARDS(f, files) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering r = load_link(ctx, *f);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (r < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return r;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering }

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringbool link_config_should_reload(link_config_ctx *ctx) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return paths_check_timestamp(link_dirs, &ctx->link_dirs_ts_usec, false);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringint link_config_get(link_config_ctx *ctx, struct udev_device *device,

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link_config **ret) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link_config *link;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering LIST_FOREACH(links, link, ctx->links) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering const char* attr_value;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering attr_value = udev_device_get_sysattr_value(device, "address");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (net_match_config(link->match_mac, link->match_path, link->match_driver,

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link->match_type, link->match_name, link->match_host,

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link->match_virt, link->match_kernel, link->match_arch,

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering attr_value ? ether_aton(attr_value) : NULL,

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering udev_device_get_property_value(device, "ID_PATH"),

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering udev_device_get_driver(udev_device_get_parent(device)),

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering udev_device_get_property_value(device, "ID_NET_DRIVER"),

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering udev_device_get_devtype(device),

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering udev_device_get_sysname(device))) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (link->match_name) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering unsigned char name_assign_type = NET_NAME_UNKNOWN;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering attr_value = udev_device_get_sysattr_value(device, "name_assign_type");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (attr_value)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering (void)safe_atou8(attr_value, &name_assign_type);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (name_assign_type == NET_NAME_ENUM) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering log_warning("Config file %s applies to device based on potentially unpredictable interface name '%s'",

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link->filename, udev_device_get_sysname(device));

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering *ret = link;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering } else if (name_assign_type == NET_NAME_RENAMED) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering log_warning("Config file %s matches device based on renamed interface name '%s', ignoring",

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link->filename, udev_device_get_sysname(device));

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering continue;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering }

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering }

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering log_debug("Config file %s applies to device %s",

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering link->filename, udev_device_get_sysname(device));

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering *ret = link;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering }

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering }

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering *ret = NULL;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -ENOENT;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringstatic bool mac_is_random(struct udev_device *device) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering const char *s;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering unsigned type;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering int r;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering /* if we can't get the assign type, assume it is not random */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering s = udev_device_get_sysattr_value(device, "addr_assign_type");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!s)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return false;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering r = safe_atou(s, &type);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (r < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return false;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return type == NET_ADDR_RANDOM;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringstatic bool should_rename(struct udev_device *device, bool respect_predictable) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering const char *s;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering unsigned type;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering int r;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering /* if we can't get the assgin type, assume we should rename */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering s = udev_device_get_sysattr_value(device, "name_assign_type");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!s)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return true;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering r = safe_atou(s, &type);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (r < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return true;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering switch (type) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering case NET_NAME_USER:

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering case NET_NAME_RENAMED:

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering /* these were already named by userspace, do not touch again */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return false;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering case NET_NAME_PREDICTABLE:

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering /* the kernel claims to have given a predictable name */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (respect_predictable)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return false;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering /* fall through */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering case NET_NAME_ENUM:

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering default:

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering /* the name is known to be bad, or of an unknown type */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return true;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering }

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringstatic int get_mac(struct udev_device *device, bool want_random,

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering struct ether_addr *mac) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering int r;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (want_random)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering random_bytes(mac->ether_addr_octet, ETH_ALEN);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering else {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering uint8_t result[8];

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering r = net_get_unique_predictable_data(device, result);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (r < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return r;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert_cc(ETH_ALEN <= sizeof(result));

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering memcpy(mac->ether_addr_octet, result, ETH_ALEN);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering }

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering /* see eth_random_addr in the kernel */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering mac->ether_addr_octet[0] &= 0xfe; /* clear multicast bit */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering mac->ether_addr_octet[0] |= 0x02; /* set local assignment bit (IEEE802) */

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return 0;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering}

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poetteringint link_config_apply(link_config_ctx *ctx, link_config *config,

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering struct udev_device *device, const char **name) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering const char *old_name;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering const char *new_name = NULL;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering struct ether_addr generated_mac;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering struct ether_addr *mac = NULL;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering bool respect_predictable = false;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering int r, ifindex;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert(ctx);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert(config);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert(device);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering assert(name);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering old_name = udev_device_get_sysname(device);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (!old_name)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -EINVAL;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering r = ethtool_set_speed(&ctx->ethtool_fd, old_name, config->speed / 1024,

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering config->duplex);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (r < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering log_warning_errno(r, "Could not set speed or duplex of %s to %u Mbps (%s): %m",

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering old_name, config->speed / 1024,

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering duplex_to_string(config->duplex));

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering r = ethtool_set_wol(&ctx->ethtool_fd, old_name, config->wol);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (r < 0)

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering log_warning_errno(r, "Could not set WakeOnLan of %s to %s: %m",

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering old_name, wol_to_string(config->wol));

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering ifindex = udev_device_get_ifindex(device);

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (ifindex <= 0) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering log_warning("Could not find ifindex");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering return -ENODEV;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering }

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering if (ctx->enable_name_policy && config->name_policy) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering NamePolicy *policy;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering for (policy = config->name_policy;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering !new_name && *policy != _NAMEPOLICY_INVALID; policy++) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering switch (*policy) {

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering case NAMEPOLICY_KERNEL:

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering respect_predictable = true;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering break;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering case NAMEPOLICY_DATABASE:

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering new_name = udev_device_get_property_value(device, "ID_NET_NAME_FROM_DATABASE");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering break;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering case NAMEPOLICY_ONBOARD:

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering new_name = udev_device_get_property_value(device, "ID_NET_NAME_ONBOARD");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering break;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering case NAMEPOLICY_SLOT:

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering new_name = udev_device_get_property_value(device, "ID_NET_NAME_SLOT");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering break;

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering case NAMEPOLICY_PATH:

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering new_name = udev_device_get_property_value(device, "ID_NET_NAME_PATH");

1ee306e1248866617c96ed9f4263f375588ad838Lennart Poettering break;

case NAMEPOLICY_MAC:

new_name = udev_device_get_property_value(device, "ID_NET_NAME_MAC");

break;

default:

break;

}

}

}

if (should_rename(device, respect_predictable)) {

/* if not set by policy, fall back manually set name */

if (!new_name)

new_name = config->name;

} else

new_name = NULL;

switch (config->mac_policy) {

case MACPOLICY_PERSISTENT:

if (mac_is_random(device)) {

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

if (r == -ENOENT)

break;

else if (r < 0)

return r;

mac = &generated_mac;

}

break;

case MACPOLICY_RANDOM:

if (!mac_is_random(device)) {

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

if (r == -ENOENT)

break;

else if (r < 0)

return r;

mac = &generated_mac;

}

break;

default:

mac = config->mac;

}

r = rtnl_set_link_properties(&ctx->rtnl, ifindex, config->alias, mac,

config->mtu);

if (r < 0)

return log_warning_errno(r, "Could not set Alias, MACAddress or MTU on %s: %m", old_name);

*name = new_name;

return 0;

}

int link_get_driver(link_config_ctx *ctx, struct udev_device *device, char **ret) {

const char *name;

char *driver;

int r;

name = udev_device_get_sysname(device);

if (!name)

return -EINVAL;

r = ethtool_get_driver(&ctx->ethtool_fd, name, &driver);

if (r < 0)

return r;

*ret = driver;

return 0;

}

static const char* const mac_policy_table[_MACPOLICY_MAX] = {

[MACPOLICY_PERSISTENT] = "persistent",

[MACPOLICY_RANDOM] = "random"

};

DEFINE_STRING_TABLE_LOOKUP(mac_policy, MACPolicy);

DEFINE_CONFIG_PARSE_ENUM(config_parse_mac_policy, mac_policy, MACPolicy,

"Failed to parse MAC address policy");

static const char* const name_policy_table[_NAMEPOLICY_MAX] = {

[NAMEPOLICY_KERNEL] = "kernel",

[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");