898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include <netinet/ether.h>

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include <net/if.h>

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "sd-id128.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "link-config.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "ethtool-util.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "libudev-private.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "sd-rtnl.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "util.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "log.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "strv.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "path-util.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "conf-parser.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "conf-files.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "fileio.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "hashmap.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "rtnl-util.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#include "net-util.h"

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalierstruct link_config_ctx {

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier LIST_HEAD(link_config, links);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

b6f0c419e38a960873fe68bf8f89bbb0268eed02Harald Hoyer int ethtool_fd;

b6f0c419e38a960873fe68bf8f89bbb0268eed02Harald Hoyer

b6f0c419e38a960873fe68bf8f89bbb0268eed02Harald Hoyer bool enable_name_policy;

b6f0c419e38a960873fe68bf8f89bbb0268eed02Harald Hoyer

b6f0c419e38a960873fe68bf8f89bbb0268eed02Harald Hoyer sd_rtnl *rtnl;

b6f0c419e38a960873fe68bf8f89bbb0268eed02Harald Hoyer

b6f0c419e38a960873fe68bf8f89bbb0268eed02Harald Hoyer char **link_dirs;

b6f0c419e38a960873fe68bf8f89bbb0268eed02Harald Hoyer usec_t link_dirs_ts_usec;

61fea35e14d84144e6e2122f5cd247f9c7e6245eEvgeny Vereshchagin};

61fea35e14d84144e6e2122f5cd247f9c7e6245eEvgeny Vereshchagin

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny ChevalierDEFINE_TRIVIAL_CLEANUP_FUNC(link_config_ctx*, link_config_ctx_free);

61fea35e14d84144e6e2122f5cd247f9c7e6245eEvgeny Vereshchagin#define _cleanup_link_config_ctx_free_ _cleanup_(link_config_ctx_freep)

61fea35e14d84144e6e2122f5cd247f9c7e6245eEvgeny Vereshchagin

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalierint link_config_ctx_new(link_config_ctx **ret) {

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier _cleanup_link_config_ctx_free_ link_config_ctx *ctx = NULL;

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier if (!ret)

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier return -EINVAL;

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier ctx = new0(link_config_ctx, 1);

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier if (!ctx)

3486cb6cfa3d32a95c0daf02c7510fdf372507bfMartin Pitt return -ENOMEM;

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier LIST_HEAD_INIT(ctx->links);

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier ctx->ethtool_fd = -1;

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier ctx->enable_name_policy = true;

dbf43a42b8bb66d53c7cbab05f104c28097f811eDaniel Mack

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier ctx->link_dirs = strv_new("/etc/systemd/network",

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier "/run/systemd/network",

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier "/usr/lib/systemd/network",

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#ifdef HAVE_SPLIT_USR

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier "/lib/systemd/network",

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier#endif

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier NULL);

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier if (!ctx->link_dirs) {

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier log_error("failed to build link config directory array");

c6a77179a4097df355f0f04b8f3260c76b5e515cRonny Chevalier return -ENOMEM;

dbf43a42b8bb66d53c7cbab05f104c28097f811eDaniel Mack }

dbf43a42b8bb66d53c7cbab05f104c28097f811eDaniel Mack

dbf43a42b8bb66d53c7cbab05f104c28097f811eDaniel Mack if (!path_strv_canonicalize_uniq(ctx->link_dirs)) {

dbf43a42b8bb66d53c7cbab05f104c28097f811eDaniel Mack log_error("failed to canonicalize link config directories\n");

8a8332f77e61d41f3bb28b8f929ed41e0ffaf721Zbigniew Jędrzejewski-Szmek return -ENOMEM;

8a8332f77e61d41f3bb28b8f929ed41e0ffaf721Zbigniew Jędrzejewski-Szmek }

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier *ret = ctx;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier ctx = NULL;

8a8332f77e61d41f3bb28b8f929ed41e0ffaf721Zbigniew Jędrzejewski-Szmek

24be78d72b931b0175f08cee12fd23d631c024bfEvgeny Vereshchagin return 0;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier}

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalierstatic int link_config_ctx_connect(link_config_ctx *ctx) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier int r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (ctx->ethtool_fd >= 0 && ctx->rtnl)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return 0;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = ethtool_connect(&ctx->ethtool_fd);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (r < 0)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = sd_rtnl_open(0, &ctx->rtnl);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (r < 0)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return 0;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier}

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalierstatic void link_configs_free(link_config_ctx *ctx) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier link_config *link, *link_next;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (!ctx)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier LIST_FOREACH_SAFE(links, link, link_next, ctx->links) {

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin free(link->filename);

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin free(link->match_path);

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin free(link->match_driver);

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin free(link->match_type);

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin free(link->description);

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin free(link->alias);

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin free(link);

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin }

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin}

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchaginvoid link_config_ctx_free(link_config_ctx *ctx) {

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin if (!ctx)

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin return;

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin if (ctx->ethtool_fd >= 0)

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin close_nointr_nofail(ctx->ethtool_fd);

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin

a2fbff31c9c319da51528f85ae97d019f1e61a86Evgeny Vereshchagin sd_rtnl_unref(ctx->rtnl);

cb2f9d3f296bc80b55f09880d61dfdf47fc98212Evgeny Vereshchagin

cb2f9d3f296bc80b55f09880d61dfdf47fc98212Evgeny Vereshchagin strv_free(ctx->link_dirs);

cb2f9d3f296bc80b55f09880d61dfdf47fc98212Evgeny Vereshchagin link_configs_free(ctx);

cb2f9d3f296bc80b55f09880d61dfdf47fc98212Evgeny Vereshchagin

cb2f9d3f296bc80b55f09880d61dfdf47fc98212Evgeny Vereshchagin free(ctx);

cb2f9d3f296bc80b55f09880d61dfdf47fc98212Evgeny Vereshchagin

cb2f9d3f296bc80b55f09880d61dfdf47fc98212Evgeny Vereshchagin return;

cb2f9d3f296bc80b55f09880d61dfdf47fc98212Evgeny Vereshchagin}

cb2f9d3f296bc80b55f09880d61dfdf47fc98212Evgeny Vereshchagin

cb2f9d3f296bc80b55f09880d61dfdf47fc98212Evgeny Vereshchaginstatic int load_link(link_config_ctx *ctx, const char *filename) {

cb2f9d3f296bc80b55f09880d61dfdf47fc98212Evgeny Vereshchagin link_config *link;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier _cleanup_fclose_ FILE *file;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier int r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier assert(ctx);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier assert(filename);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier file = fopen(filename, "re");

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (!file) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (errno == ENOENT)

8a8332f77e61d41f3bb28b8f929ed41e0ffaf721Zbigniew Jędrzejewski-Szmek return 0;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier else

2375607039517c88df51ef16ddbb624ec1c10654Kay Sievers return errno;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier }

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier link = new0(link_config, 1);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (!link) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = log_oom();

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier goto failure;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier }

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier link->mac_policy = _MACPOLICY_INVALID;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier link->wol = _WOL_INVALID;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier link->duplex = _DUP_INVALID;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = config_parse(NULL, filename, file, "Match\0Link\0Ethernet\0", config_item_perf_lookup,

739d81ddd005fae2bb82edce5b8a6173c7c48b34Zbigniew Jędrzejewski-Szmek (void*) link_config_gperf_lookup, false, false, link);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (r < 0) {

1b1eae69ce52ef6c89a1200e8d3758549b291991Daniel Mack log_warning("Could not parse config file %s: %s", filename, strerror(-r));

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier goto failure;

739d81ddd005fae2bb82edce5b8a6173c7c48b34Zbigniew Jędrzejewski-Szmek } else

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier log_debug("Parsed configuration file %s", filename);

edbced8a151c1b7ded685e2ec644950d2adec5f5Harald Hoyer

1b1eae69ce52ef6c89a1200e8d3758549b291991Daniel Mack link->filename = strdup(filename);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier LIST_PREPEND(links, ctx->links, link);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

739d81ddd005fae2bb82edce5b8a6173c7c48b34Zbigniew Jędrzejewski-Szmek return 0;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalierfailure:

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier free(link);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier}

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalierstatic bool enable_name_policy(void) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier _cleanup_free_ char *line;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier char *w, *state;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier int r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier size_t l;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = proc_cmdline(&line);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (r < 0)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier log_warning("Failed to read /proc/cmdline, ignoring: %s", strerror(-r));

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (r <= 0)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return true;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier FOREACH_WORD_QUOTED(w, l, line, state)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (strneq(w, "net.ifnames=0", l))

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return false;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return true;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier}

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalierint link_config_load(link_config_ctx *ctx) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier int r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier char **files, **f;

c7eda0133b6bf13a182337cbe8a61bf2faf9b32eEvgeny Vereshchagin

c7eda0133b6bf13a182337cbe8a61bf2faf9b32eEvgeny Vereshchagin link_configs_free(ctx);

c7eda0133b6bf13a182337cbe8a61bf2faf9b32eEvgeny Vereshchagin

c7eda0133b6bf13a182337cbe8a61bf2faf9b32eEvgeny Vereshchagin if (!enable_name_policy()) {

c7eda0133b6bf13a182337cbe8a61bf2faf9b32eEvgeny Vereshchagin ctx->enable_name_policy = false;

c7eda0133b6bf13a182337cbe8a61bf2faf9b32eEvgeny Vereshchagin log_info("Network interface NamePolicy= disabled on kernel commandline, ignoring.");

c7eda0133b6bf13a182337cbe8a61bf2faf9b32eEvgeny Vereshchagin }

c7eda0133b6bf13a182337cbe8a61bf2faf9b32eEvgeny Vereshchagin

c7eda0133b6bf13a182337cbe8a61bf2faf9b32eEvgeny Vereshchagin /* update timestamp */

c7eda0133b6bf13a182337cbe8a61bf2faf9b32eEvgeny Vereshchagin paths_check_timestamp(ctx->link_dirs, &ctx->link_dirs_ts_usec, true);

c7eda0133b6bf13a182337cbe8a61bf2faf9b32eEvgeny Vereshchagin

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = conf_files_list_strv(&files, ".link", NULL, (const char **)ctx->link_dirs);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (r < 0) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier log_error("failed to enumerate link files: %s", strerror(-r));

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier }

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier STRV_FOREACH_BACKWARDS(f, files) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = load_link(ctx, *f);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (r < 0)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier }

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return 0;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier}

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalierbool link_config_should_reload(link_config_ctx *ctx) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return paths_check_timestamp(ctx->link_dirs, &ctx->link_dirs_ts_usec, false);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier}

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalierint link_config_get(link_config_ctx *ctx, struct udev_device *device, link_config **ret) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier link_config *link;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier LIST_FOREACH(links, link, ctx->links) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (net_match_config(link->match_mac, link->match_path,

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier link->match_driver, link->match_type, NULL,

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier udev_device_get_sysattr_value(device, "address"),

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier udev_device_get_property_value(device, "ID_PATH"),

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier udev_device_get_driver(device),

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier udev_device_get_devtype(device),

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier NULL)) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier log_debug("Config file %s applies to device %s",

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier link->filename,

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier udev_device_get_sysname(device));

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier *ret = link;

bf3a947cb44f31359bba313e0252cbcc0dc95b03Evgeny Vereshchagin return 0;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier }

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier }

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier *ret = NULL;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return -ENOENT;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier}

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalierstatic bool mac_is_random(struct udev_device *device) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier const char *s;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier unsigned type;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier int r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier s = udev_device_get_sysattr_value(device, "addr_assign_type");

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (!s)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return false; /* if we don't know, assume it is not random */

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = safe_atou(s, &type);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (r < 0)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return false;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

4be4833ece2856e0cacc09f8f8b2c02b320751faMartin Pitt /* check for NET_ADDR_RANDOM */

7d023341c765c205068e33d23d63a4000ec211dfMartin Pitt return type == 1;

7d023341c765c205068e33d23d63a4000ec211dfMartin Pitt}

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalierstatic bool mac_is_permanent(struct udev_device *device) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier const char *s;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier unsigned type;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier int r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier s = udev_device_get_sysattr_value(device, "addr_assign_type");

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (!s)

cffae62bcb6912fbaf1b7b282d9d170c9d308897Martin Pitt return true; /* if we don't know, assume it is permanent */

99877b7e3782a51b31bf191825f0335500f52fe5Harald Hoyer r = safe_atou(s, &type);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (r < 0)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return true;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

3486cb6cfa3d32a95c0daf02c7510fdf372507bfMartin Pitt /* check for NET_ADDR_PERM */

3486cb6cfa3d32a95c0daf02c7510fdf372507bfMartin Pitt return type == 0;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier}

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

e63b61be5350dbe92ea12e1eeb96dde251ed9292Evgeny Vereshchaginstatic int get_mac(struct udev_device *device, bool want_random, struct ether_addr *mac) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier unsigned int seed;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier int r, i;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (want_random)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier seed = random_u();

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier else {

0fe15dc8ddddeb39a5cad1f4f4afa25fa074a5d1Evgeny Vereshchagin const char *name;

0fe15dc8ddddeb39a5cad1f4f4afa25fa074a5d1Evgeny Vereshchagin sd_id128_t machine;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier char machineid_buf[33];

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier const char *seed_str;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier /* fetch some persistent data unique (on this machine) to this device */

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier name = udev_device_get_property_value(device, "ID_NET_NAME_ONBOARD");

0fe15dc8ddddeb39a5cad1f4f4afa25fa074a5d1Evgeny Vereshchagin if (!name) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier name = udev_device_get_property_value(device, "ID_NET_NAME_SLOT");

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (!name) {

417491f122b346a31cf8dc406c4f9195a5900cecEvgeny Vereshchagin name = udev_device_get_property_value(device, "ID_NET_NAME_PATH");

417491f122b346a31cf8dc406c4f9195a5900cecEvgeny Vereshchagin if (!name)

417491f122b346a31cf8dc406c4f9195a5900cecEvgeny Vereshchagin return -ENOENT;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier }

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier }

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier /* fetch some persistent data unique to this machine */

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = sd_id128_get_machine(&machine);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (r < 0)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier /* combine the data */

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier seed_str = strappenda(name, sd_id128_to_string(machine, machineid_buf));

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier /* hash to get seed */

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier seed = string_hash_func(seed_str);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier }

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

25b47f96d9601ff566257b2a31bfb5f4bd25d661Marko Myllynen srandom(seed);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier for (i = 0; i < ETH_ALEN; i++) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier mac->ether_addr_octet[i] = random();

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier }

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier /* see eth_random_addr in the kernel */

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier mac->ether_addr_octet[0] &= 0xfe; /* clear multicast bit */

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier mac->ether_addr_octet[0] |= 0x02; /* set local assignment bit (IEEE802) */

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return 0;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier}

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalierint link_config_apply(link_config_ctx *ctx, link_config *config, struct udev_device *device, const char **name) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier const char *old_name;

53d90f9582f96208b3674da823ad1a3d2c3b1aa4Martin Pitt const char *new_name = NULL;

5c404f1ab8e96efedb983806443ca982a1b2a372Evgeny Vereshchagin struct ether_addr generated_mac;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier struct ether_addr *mac = NULL;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier int r, ifindex;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier assert(ctx);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier assert(config);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier assert(device);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier assert(name);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = link_config_ctx_connect(ctx);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (r < 0)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return r;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier old_name = udev_device_get_sysname(device);

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (!old_name)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier return -EINVAL;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = ethtool_set_speed(ctx->ethtool_fd, old_name, config->speed, config->duplex);

0d6e798a784ef0ba6b95512e4453067b2f84a91aHarald Hoyer if (r < 0)

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier log_warning("Could not set speed or duplex of %s to %u Mbytes (%s): %s",

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier old_name, config->speed, duplex_to_string(config->duplex), strerror(-r));

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = ethtool_set_wol(ctx->ethtool_fd, old_name, config->wol);

0d6e798a784ef0ba6b95512e4453067b2f84a91aHarald Hoyer if (r < 0)

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer log_warning("Could not set WakeOnLan of %s to %s: %s",

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer old_name, wol_to_string(config->wol), strerror(-r));

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer

0d6e798a784ef0ba6b95512e4453067b2f84a91aHarald Hoyer ifindex = udev_device_get_ifindex(device);

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer if (ifindex <= 0) {

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer log_warning("Could not find ifindex");

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer return -ENODEV;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer }

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer if (ctx->enable_name_policy && config->name_policy) {

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer NamePolicy *policy;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer for (policy = config->name_policy; !new_name && *policy != _NAMEPOLICY_INVALID; policy++) {

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer switch (*policy) {

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer case NAMEPOLICY_ONBOARD:

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer new_name = udev_device_get_property_value(device, "ID_NET_NAME_ONBOARD");

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer break;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer case NAMEPOLICY_SLOT:

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer new_name = udev_device_get_property_value(device, "ID_NET_NAME_SLOT");

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer break;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer case NAMEPOLICY_PATH:

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer new_name = udev_device_get_property_value(device, "ID_NET_NAME_PATH");

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer break;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer case NAMEPOLICY_MAC:

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer new_name = udev_device_get_property_value(device, "ID_NET_NAME_MAC");

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer break;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer default:

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer break;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer }

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer }

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer }

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer if (new_name)

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer *name = new_name; /* a name was set by a policy */

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer else if (config->name)

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer *name = config->name; /* a name was set manually in the config */

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer else

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer *name = NULL;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer switch (config->mac_policy) {

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer case MACPOLICY_PERSISTENT:

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer if (!mac_is_permanent(device)) {

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer r = get_mac(device, false, &generated_mac);

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer if (r < 0)

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer return r;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer mac = &generated_mac;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier }

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier break;

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier case MACPOLICY_RANDOM:

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier if (!mac_is_random(device)) {

889a90422dd47284dffa32b9234a6e58991b000cRonny Chevalier r = get_mac(device, true, &generated_mac);

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer if (r < 0)

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer return r;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer mac = &generated_mac;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer }

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer break;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer default:

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer mac = config->mac;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer }

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer r = rtnl_set_link_properties(ctx->rtnl, ifindex, config->alias, mac, config->mtu);

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer if (r < 0) {

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer log_warning("Could not set Alias, MACAddress or MTU on %s: %s", old_name, strerror(-r));

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer return r;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer }

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer return 0;

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer}

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyerstatic const char* const mac_policy_table[] = {

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer [MACPOLICY_PERSISTENT] = "persistent",

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer [MACPOLICY_RANDOM] = "random"

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer};

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald HoyerDEFINE_STRING_TABLE_LOOKUP(mac_policy, MACPolicy);

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald HoyerDEFINE_CONFIG_PARSE_ENUM(config_parse_mac_policy, mac_policy, MACPolicy, "Failed to parse MAC address policy");

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyerstatic const char* const name_policy_table[] = {

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer [NAMEPOLICY_ONBOARD] = "onboard",

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer [NAMEPOLICY_SLOT] = "slot",

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer [NAMEPOLICY_PATH] = "path",

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer [NAMEPOLICY_MAC] = "mac"

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer};

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald HoyerDEFINE_STRING_TABLE_LOOKUP(name_policy, NamePolicy);

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald HoyerDEFINE_CONFIG_PARSE_ENUMV(config_parse_name_policy, name_policy, NamePolicy, _NAMEPOLICY_INVALID, "Failed to parse interface name policy");

898720b7e9cf3bdf7a93e435cbed5dd6942ecf9bHarald Hoyer