./tools/notsd-move

7 files changed, 1083 insertions, 0 deletions

diff --git a/src/grp-udev/libudev-core/net/.gitignore b/src/grp-udev/libudev-core/net/.gitignore
new file mode 100644
index 0000000000..9ca85bacc9
--- /dev/null
+++ b/src/grp-udev/libudev-core/net/.gitignore
@@ -0,0 +1 @@
+/link-config-gperf.c
diff --git a/src/grp-udev/libudev-core/net/Makefile b/src/grp-udev/libudev-core/net/Makefile
new file mode 100644
index 0000000000..ac615aad3b
--- /dev/null
+++ b/src/grp-udev/libudev-core/net/Makefile
@@ -0,0 +1,29 @@
+#  -*- Mode: makefile; indent-tabs-mode: t -*-
+#
+#  This file is part of systemd.
+#
+#  Copyright 2010-2012 Lennart Poettering
+#  Copyright 2010-2012 Kay Sievers
+#  Copyright 2013 Zbigniew Jędrzejewski-Szmek
+#  Copyright 2013 David Strauss
+#  Copyright 2016 Luke Shumaker
+#
+#  systemd is free software; you can redistribute it and/or modify it
+#  under the terms of the GNU Lesser General Public License as published by
+#  the Free Software Foundation; either version 2.1 of the License, or
+#  (at your option) any later version.
+#
+#  systemd is distributed in the hope that it will be useful, but
+#  WITHOUT ANY WARRANTY; without even the implied warranty of
+#  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+#  Lesser General Public License for more details.
+#
+#  You should have received a copy of the GNU Lesser General Public License
+#  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+include $(dir $(lastword $(MAKEFILE_LIST)))/../../../../config.mk
+include $(topsrcdir)/build-aux/Makefile.head.mk
+
+sd.CPPFLAGS += $(libsystemd-shared.CPPFLAGS)
+sd.CPPFLAGS += $(libsystemd-network.CPPFLAGS)
+
+include $(topsrcdir)/build-aux/Makefile.tail.mk
diff --git a/src/grp-udev/libudev-core/net/ethtool-util.c b/src/grp-udev/libudev-core/net/ethtool-util.c
new file mode 100644
index 0000000000..05d6ecb953
--- /dev/null
+++ b/src/grp-udev/libudev-core/net/ethtool-util.c
@@ -0,0 +1,327 @@
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <net/if.h>
+#include <sys/ioctl.h>
+
+#include <linux/ethtool.h>
+#include <linux/sockios.h>
+
+#include "systemd-basic/log.h"
+#include "systemd-basic/socket-util.h"
+#include "systemd-basic/string-table.h"
+#include "systemd-basic/strxcpyx.h"
+#include "systemd-basic/util.h"
+#include "systemd-shared/conf-parser.h"
+
+#include "ethtool-util.h"
+
+static const char* const duplex_table[_DUP_MAX] = {
+        [DUP_FULL] = "full",
+        [DUP_HALF] = "half"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(duplex, Duplex);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_duplex, duplex, Duplex, "Failed to parse duplex setting");
+
+static const char* const wol_table[_WOL_MAX] = {
+        [WOL_PHY] = "phy",
+        [WOL_MAGIC] = "magic",
+        [WOL_OFF] = "off"
+};
+
+DEFINE_STRING_TABLE_LOOKUP(wol, WakeOnLan);
+DEFINE_CONFIG_PARSE_ENUM(config_parse_wol, wol, WakeOnLan, "Failed to parse WakeOnLan setting");
+
+static const char* const netdev_feature_table[_NET_DEV_FEAT_MAX] = {
+        [NET_DEV_FEAT_GSO] = "tx-generic-segmentation",
+        [NET_DEV_FEAT_GRO] = "rx-gro",
+        [NET_DEV_FEAT_LRO] = "rx-lro",
+        [NET_DEV_FEAT_TSO] = "tx-tcp-segmentation",
+        [NET_DEV_FEAT_UFO] = "tx-udp-fragmentation",
+};
+
+int ethtool_connect(int *ret) {
+        int fd;
+
+        assert_return(ret, -EINVAL);
+
+        fd = socket_ioctl_fd();
+        if (fd < 0)
+                return fd;
+        *ret = fd;
+
+        return 0;
+}
+
+int ethtool_get_driver(int *fd, const char *ifname, char **ret) {
+        struct ethtool_drvinfo ecmd = {
+                .cmd = ETHTOOL_GDRVINFO
+        };
+        struct ifreq ifr = {
+                .ifr_data = (void*) &ecmd
+        };
+        char *d;
+        int r;
+
+        if (*fd < 0) {
+                r = ethtool_connect(fd);
+                if (r < 0)
+                        return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
+        }
+
+        strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
+
+        r = ioctl(*fd, SIOCETHTOOL, &ifr);
+        if (r < 0)
+                return -errno;
+
+        d = strdup(ecmd.driver);
+        if (!d)
+                return -ENOMEM;
+
+        *ret = d;
+        return 0;
+}
+
+int ethtool_set_speed(int *fd, const char *ifname, unsigned int speed, Duplex duplex) {
+        struct ethtool_cmd ecmd = {
+                .cmd = ETHTOOL_GSET
+        };
+        struct ifreq ifr = {
+                .ifr_data = (void*) &ecmd
+        };
+        bool need_update = false;
+        int r;
+
+        if (speed == 0 && duplex == _DUP_INVALID)
+                return 0;
+
+        if (*fd < 0) {
+                r = ethtool_connect(fd);
+                if (r < 0)
+                        return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
+        }
+
+        strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
+
+        r = ioctl(*fd, SIOCETHTOOL, &ifr);
+        if (r < 0)
+                return -errno;
+
+        if (ethtool_cmd_speed(&ecmd) != speed) {
+                ethtool_cmd_speed_set(&ecmd, speed);
+                need_update = true;
+        }
+
+        switch (duplex) {
+                case DUP_HALF:
+                        if (ecmd.duplex != DUPLEX_HALF) {
+                                ecmd.duplex = DUPLEX_HALF;
+                                need_update = true;
+                        }
+                        break;
+                case DUP_FULL:
+                        if (ecmd.duplex != DUPLEX_FULL) {
+                                ecmd.duplex = DUPLEX_FULL;
+                                need_update = true;
+                        }
+                        break;
+                default:
+                        break;
+        }
+
+        if (need_update) {
+                ecmd.cmd = ETHTOOL_SSET;
+
+                r = ioctl(*fd, SIOCETHTOOL, &ifr);
+                if (r < 0)
+                        return -errno;
+        }
+
+        return 0;
+}
+
+int ethtool_set_wol(int *fd, const char *ifname, WakeOnLan wol) {
+        struct ethtool_wolinfo ecmd = {
+                .cmd = ETHTOOL_GWOL
+        };
+        struct ifreq ifr = {
+                .ifr_data = (void*) &ecmd
+        };
+        bool need_update = false;
+        int r;
+
+        if (wol == _WOL_INVALID)
+                return 0;
+
+        if (*fd < 0) {
+                r = ethtool_connect(fd);
+                if (r < 0)
+                        return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
+        }
+
+        strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
+
+        r = ioctl(*fd, SIOCETHTOOL, &ifr);
+        if (r < 0)
+                return -errno;
+
+        switch (wol) {
+                case WOL_PHY:
+                        if (ecmd.wolopts != WAKE_PHY) {
+                                ecmd.wolopts = WAKE_PHY;
+                                need_update = true;
+                        }
+                        break;
+                case WOL_MAGIC:
+                        if (ecmd.wolopts != WAKE_MAGIC) {
+                                ecmd.wolopts = WAKE_MAGIC;
+                                need_update = true;
+                        }
+                        break;
+                case WOL_OFF:
+                        if (ecmd.wolopts != 0) {
+                                ecmd.wolopts = 0;
+                                need_update = true;
+                        }
+                        break;
+                default:
+                        break;
+        }
+
+        if (need_update) {
+                ecmd.cmd = ETHTOOL_SWOL;
+
+                r = ioctl(*fd, SIOCETHTOOL, &ifr);
+                if (r < 0)
+                        return -errno;
+        }
+
+        return 0;
+}
+
+static int ethtool_get_stringset(int *fd, struct ifreq *ifr, int stringset_id, struct ethtool_gstrings **gstrings) {
+        _cleanup_free_ struct ethtool_gstrings *strings = NULL;
+        struct {
+                struct ethtool_sset_info info;
+                uint32_t space;
+        } buffer = {
+                .info = {
+                        .cmd = ETHTOOL_GSSET_INFO,
+                        .sset_mask = UINT64_C(1) << stringset_id,
+                },
+        };
+        unsigned len;
+        int r;
+
+        ifr->ifr_data = (void *) &buffer.info;
+
+        r = ioctl(*fd, SIOCETHTOOL, ifr);
+        if (r < 0)
+                return -errno;
+
+        if (!buffer.info.sset_mask)
+                return -EINVAL;
+
+        len = buffer.info.data[0];
+
+        strings = malloc0(sizeof(struct ethtool_gstrings) + len * ETH_GSTRING_LEN);
+        if (!strings)
+                return -ENOMEM;
+
+        strings->cmd = ETHTOOL_GSTRINGS;
+        strings->string_set = stringset_id;
+        strings->len = len;
+
+        ifr->ifr_data = (void *) strings;
+
+        r = ioctl(*fd, SIOCETHTOOL, ifr);
+        if (r < 0)
+                return -errno;
+
+        *gstrings = strings;
+        strings = NULL;
+
+        return 0;
+}
+
+static int find_feature_index(struct ethtool_gstrings *strings, const char *feature) {
+        unsigned i;
+
+        for (i = 0; i < strings->len; i++) {
+                if (streq((char *) &strings->data[i * ETH_GSTRING_LEN], feature))
+                        return i;
+        }
+
+        return -1;
+}
+
+int ethtool_set_features(int *fd, const char *ifname, NetDevFeature *features) {
+        _cleanup_free_ struct ethtool_gstrings *strings = NULL;
+        struct ethtool_sfeatures *sfeatures;
+        int block, bit, i, r;
+        struct ifreq ifr = {};
+
+        if (*fd < 0) {
+                r = ethtool_connect(fd);
+                if (r < 0)
+                        return log_warning_errno(r, "link_config: could not connect to ethtool: %m");
+        }
+
+        strscpy(ifr.ifr_name, IFNAMSIZ, ifname);
+
+        r = ethtool_get_stringset(fd, &ifr, ETH_SS_FEATURES, &strings);
+        if (r < 0)
+                return log_warning_errno(r, "link_config: could not get ethtool features for %s", ifname);
+
+        sfeatures = alloca0(sizeof(struct ethtool_gstrings) + DIV_ROUND_UP(strings->len, 32U) * sizeof(sfeatures->features[0]));
+        sfeatures->cmd = ETHTOOL_SFEATURES;
+        sfeatures->size = DIV_ROUND_UP(strings->len, 32U);
+
+        for (i = 0; i < _NET_DEV_FEAT_MAX; i++) {
+
+                if (features[i] != -1) {
+
+                        r = find_feature_index(strings, netdev_feature_table[i]);
+                        if (r < 0) {
+                                log_warning_errno(r, "link_config: could not find feature: %s", netdev_feature_table[i]);
+                                continue;
+                        }
+
+                        block = r / 32;
+                        bit = r % 32;
+
+                        sfeatures->features[block].valid |= 1 << bit;
+
+                        if (features[i])
+                                sfeatures->features[block].requested |= 1 << bit;
+                        else
+                                sfeatures->features[block].requested &= ~(1 << bit);
+                }
+        }
+
+        ifr.ifr_data = (void *) sfeatures;
+
+        r = ioctl(*fd, SIOCETHTOOL, &ifr);
+        if (r < 0)
+                return log_warning_errno(r, "link_config: could not set ethtool features for %s", ifname);
+
+        return 0;
+}
diff --git a/src/grp-udev/libudev-core/net/ethtool-util.h b/src/grp-udev/libudev-core/net/ethtool-util.h
new file mode 100644
index 0000000000..6b5dfdd513
--- /dev/null
+++ b/src/grp-udev/libudev-core/net/ethtool-util.h
@@ -0,0 +1,65 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include "systemd-basic/macro.h"
+
+/* we can't use DUPLEX_ prefix, as it
+ * clashes with <linux/ethtool.h> */
+typedef enum Duplex {
+        DUP_FULL,
+        DUP_HALF,
+        _DUP_MAX,
+        _DUP_INVALID = -1
+} Duplex;
+
+typedef enum WakeOnLan {
+        WOL_PHY,
+        WOL_MAGIC,
+        WOL_OFF,
+        _WOL_MAX,
+        _WOL_INVALID = -1
+} WakeOnLan;
+
+typedef enum NetDevFeature {
+        NET_DEV_FEAT_GSO,
+        NET_DEV_FEAT_GRO,
+        NET_DEV_FEAT_LRO,
+        NET_DEV_FEAT_TSO,
+        NET_DEV_FEAT_UFO,
+        _NET_DEV_FEAT_MAX,
+        _NET_DEV_FEAT_INVALID = -1
+} NetDevFeature;
+
+int ethtool_connect(int *ret);
+
+int ethtool_get_driver(int *fd, const char *ifname, char **ret);
+int ethtool_set_speed(int *fd, const char *ifname, unsigned int speed, Duplex duplex);
+int ethtool_set_wol(int *fd, const char *ifname, WakeOnLan wol);
+int ethtool_set_features(int *fd, const char *ifname, NetDevFeature *features);
+
+const char *duplex_to_string(Duplex d) _const_;
+Duplex duplex_from_string(const char *d) _pure_;
+
+const char *wol_to_string(WakeOnLan wol) _const_;
+WakeOnLan wol_from_string(const char *wol) _pure_;
+
+int config_parse_duplex(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_wol(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
diff --git a/src/grp-udev/libudev-core/net/link-config-gperf.gperf b/src/grp-udev/libudev-core/net/link-config-gperf.gperf
new file mode 100644
index 0000000000..89184782ed
--- /dev/null
+++ b/src/grp-udev/libudev-core/net/link-config-gperf.gperf
@@ -0,0 +1,44 @@
+%{
+#include <stddef.h>
+
+#include "systemd-network/network-internal.h"
+#include "systemd-shared/conf-parser.h"
+
+#include "ethtool-util.h"
+#include "link-config.h"
+%}
+struct ConfigPerfItem;
+%null_strings
+%language=ANSI-C
+%define slot-name section_and_lvalue
+%define hash-function-name link_config_gperf_hash
+%define lookup-function-name link_config_gperf_lookup
+%readonly-tables
+%omit-struct-type
+%struct-type
+%includes
+%%
+Match.MACAddress,                config_parse_hwaddr,        0,                             offsetof(link_config, match_mac)
+Match.OriginalName,              config_parse_ifnames,       0,                             offsetof(link_config, match_name)
+Match.Path,                      config_parse_strv,          0,                             offsetof(link_config, match_path)
+Match.Driver,                    config_parse_strv,          0,                             offsetof(link_config, match_driver)
+Match.Type,                      config_parse_strv,          0,                             offsetof(link_config, match_type)
+Match.Host,                      config_parse_net_condition, CONDITION_HOST,                offsetof(link_config, match_host)
+Match.Virtualization,            config_parse_net_condition, CONDITION_VIRTUALIZATION,      offsetof(link_config, match_virt)
+Match.KernelCommandLine,         config_parse_net_condition, CONDITION_KERNEL_COMMAND_LINE, offsetof(link_config, match_kernel)
+Match.Architecture,              config_parse_net_condition, CONDITION_ARCHITECTURE,        offsetof(link_config, match_arch)
+Link.Description,                config_parse_string,        0,                             offsetof(link_config, description)
+Link.MACAddressPolicy,           config_parse_mac_policy,    0,                             offsetof(link_config, mac_policy)
+Link.MACAddress,                 config_parse_hwaddr,        0,                             offsetof(link_config, mac)
+Link.NamePolicy,                 config_parse_name_policy,   0,                             offsetof(link_config, name_policy)
+Link.Name,                       config_parse_ifname,        0,                             offsetof(link_config, name)
+Link.Alias,                      config_parse_ifalias,       0,                             offsetof(link_config, alias)
+Link.MTUBytes,                   config_parse_iec_size,      0,                             offsetof(link_config, mtu)
+Link.BitsPerSecond,              config_parse_si_size,       0,                             offsetof(link_config, speed)
+Link.Duplex,                     config_parse_duplex,        0,                             offsetof(link_config, duplex)
+Link.WakeOnLan,                  config_parse_wol,           0,                             offsetof(link_config, wol)
+Link.GenericSegmentationOffload, config_parse_tristate,      0,                             offsetof(link_config, features[NET_DEV_FEAT_GSO])
+Link.TCPSegmentationOffload,     config_parse_tristate,      0,                             offsetof(link_config, features[NET_DEV_FEAT_TSO])
+Link.UDPSegmentationOffload,     config_parse_tristate,      0,                             offsetof(link_config, features[NET_DEV_FEAT_UFO])
+Link.GenericReceiveOffload,      config_parse_tristate,      0,                             offsetof(link_config, features[NET_DEV_FEAT_GRO])
+Link.LargeReceiveOffload,        config_parse_tristate,      0,                             offsetof(link_config, features[NET_DEV_FEAT_LRO])
diff --git a/src/grp-udev/libudev-core/net/link-config.c b/src/grp-udev/libudev-core/net/link-config.c
new file mode 100644
index 0000000000..df37c63169
--- /dev/null
+++ b/src/grp-udev/libudev-core/net/link-config.c
@@ -0,0 +1,517 @@
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <netinet/ether.h>
+
+#include "libudev-private.h"
+#include "sd-netlink/netlink-util.h"
+#include "systemd-basic/alloc-util.h"
+#include "systemd-basic/conf-files.h"
+#include "systemd-basic/fd-util.h"
+#include "systemd-basic/log.h"
+#include "systemd-basic/missing.h"
+#include "systemd-basic/parse-util.h"
+#include "systemd-basic/path-util.h"
+#include "systemd-basic/proc-cmdline.h"
+#include "systemd-basic/random-util.h"
+#include "systemd-basic/stat-util.h"
+#include "systemd-basic/string-table.h"
+#include "systemd-basic/string-util.h"
+#include "systemd-basic/strv.h"
+#include "systemd-basic/util.h"
+#include "systemd-network/network-internal.h"
+#include "systemd-shared/conf-parser.h"
+#include "systemd-staging/sd-netlink.h"
+
+#include "ethtool-util.h"
+#include "link-config.h"
+
+struct link_config_ctx {
+        LIST_HEAD(link_config, links);
+
+        int ethtool_fd;
+
+        bool enable_name_policy;
+
+        sd_netlink *rtnl;
+
+        usec_t link_dirs_ts_usec;
+};
+
+static const char* const link_dirs[] = {
+        "/etc/systemd/network",
+        "/run/systemd/network",
+        "/usr/lib/systemd/network",
+#ifdef HAVE_SPLIT_USR
+        "/lib/systemd/network",
+#endif
+        NULL};
+
+static void link_config_free(link_config *link) {
+        if (!link)
+                return;
+
+        free(link->filename);
+
+        free(link->match_mac);
+        strv_free(link->match_path);
+        strv_free(link->match_driver);
+        strv_free(link->match_type);
+        free(link->match_name);
+        free(link->match_host);
+        free(link->match_virt);
+        free(link->match_kernel);
+        free(link->match_arch);
+
+        free(link->description);
+        free(link->mac);
+        free(link->name_policy);
+        free(link->name);
+        free(link->alias);
+
+        free(link);
+}
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(link_config*, link_config_free);
+
+static void link_configs_free(link_config_ctx *ctx) {
+        link_config *link, *link_next;
+
+        if (!ctx)
+                return;
+
+        LIST_FOREACH_SAFE(links, link, link_next, ctx->links)
+                link_config_free(link);
+}
+
+void link_config_ctx_free(link_config_ctx *ctx) {
+        if (!ctx)
+                return;
+
+        safe_close(ctx->ethtool_fd);
+
+        sd_netlink_unref(ctx->rtnl);
+
+        link_configs_free(ctx);
+
+        free(ctx);
+
+        return;
+}
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(link_config_ctx*, link_config_ctx_free);
+
+int link_config_ctx_new(link_config_ctx **ret) {
+        _cleanup_(link_config_ctx_freep) link_config_ctx *ctx = NULL;
+
+        if (!ret)
+                return -EINVAL;
+
+        ctx = new0(link_config_ctx, 1);
+        if (!ctx)
+                return -ENOMEM;
+
+        LIST_HEAD_INIT(ctx->links);
+
+        ctx->ethtool_fd = -1;
+
+        ctx->enable_name_policy = true;
+
+        *ret = ctx;
+        ctx = NULL;
+
+        return 0;
+}
+
+static int load_link(link_config_ctx *ctx, const char *filename) {
+        _cleanup_(link_config_freep) link_config *link = NULL;
+        _cleanup_fclose_ FILE *file = NULL;
+        int r;
+
+        assert(ctx);
+        assert(filename);
+
+        file = fopen(filename, "re");
+        if (!file) {
+                if (errno == ENOENT)
+                        return 0;
+                else
+                        return -errno;
+        }
+
+        if (null_or_empty_fd(fileno(file))) {
+                log_debug("Skipping empty file: %s", filename);
+                return 0;
+        }
+
+        link = new0(link_config, 1);
+        if (!link)
+                return log_oom();
+
+        link->mac_policy = _MACPOLICY_INVALID;
+        link->wol = _WOL_INVALID;
+        link->duplex = _DUP_INVALID;
+
+        memset(&link->features, -1, _NET_DEV_FEAT_MAX);
+
+        r = config_parse(NULL, filename, file,
+                         "Match\0Link\0Ethernet\0",
+                         config_item_perf_lookup, link_config_gperf_lookup,
+                         false, false, true, link);
+        if (r < 0)
+                return r;
+        else
+                log_debug("Parsed configuration file %s", filename);
+
+        if (link->mtu > UINT_MAX || link->speed > UINT_MAX)
+                return -ERANGE;
+
+        link->filename = strdup(filename);
+
+        LIST_PREPEND(links, ctx->links, link);
+        link = NULL;
+
+        return 0;
+}
+
+static bool enable_name_policy(void) {
+        _cleanup_free_ char *value = NULL;
+        int r;
+
+        r = get_proc_cmdline_key("net.ifnames=", &value);
+        if (r > 0 && streq(value, "0"))
+            return false;
+
+        return true;
+}
+
+int link_config_load(link_config_ctx *ctx) {
+        int r;
+        _cleanup_strv_free_ char **files;
+        char **f;
+
+        link_configs_free(ctx);
+
+        if (!enable_name_policy()) {
+                ctx->enable_name_policy = false;
+                log_info("Network interface NamePolicy= disabled on kernel command line, ignoring.");
+        }
+
+        /* update timestamp */
+        paths_check_timestamp(link_dirs, &ctx->link_dirs_ts_usec, true);
+
+        r = conf_files_list_strv(&files, ".link", NULL, link_dirs);
+        if (r < 0)
+                return log_error_errno(r, "failed to enumerate link files: %m");
+
+        STRV_FOREACH_BACKWARDS(f, files) {
+                r = load_link(ctx, *f);
+                if (r < 0)
+                        return r;
+        }
+
+        return 0;
+}
+
+bool link_config_should_reload(link_config_ctx *ctx) {
+        return paths_check_timestamp(link_dirs, &ctx->link_dirs_ts_usec, false);
+}
+
+int link_config_get(link_config_ctx *ctx, struct udev_device *device,
+                    link_config **ret) {
+        link_config *link;
+
+        assert(ctx);
+        assert(device);
+        assert(ret);
+
+        LIST_FOREACH(links, link, ctx->links) {
+                const char* attr_value;
+
+                attr_value = udev_device_get_sysattr_value(device, "address");
+
+                if (net_match_config(link->match_mac, link->match_path, link->match_driver,
+                                     link->match_type, link->match_name, link->match_host,
+                                     link->match_virt, link->match_kernel, link->match_arch,
+                                     attr_value ? ether_aton(attr_value) : NULL,
+                                     udev_device_get_property_value(device, "ID_PATH"),
+                                     udev_device_get_driver(udev_device_get_parent(device)),
+                                     udev_device_get_property_value(device, "ID_NET_DRIVER"),
+                                     udev_device_get_devtype(device),
+                                     udev_device_get_sysname(device))) {
+                        if (link->match_name) {
+                                unsigned char name_assign_type = NET_NAME_UNKNOWN;
+
+                                attr_value = udev_device_get_sysattr_value(device, "name_assign_type");
+                                if (attr_value)
+                                        (void) safe_atou8(attr_value, &name_assign_type);
+
+                                if (name_assign_type == NET_NAME_ENUM) {
+                                        log_warning("Config file %s applies to device based on potentially unpredictable interface name '%s'",
+                                                  link->filename, udev_device_get_sysname(device));
+                                        *ret = link;
+
+                                        return 0;
+                                } else if (name_assign_type == NET_NAME_RENAMED) {
+                                        log_warning("Config file %s matches device based on renamed interface name '%s', ignoring",
+                                                  link->filename, udev_device_get_sysname(device));
+
+                                        continue;
+                                }
+                        }
+
+                        log_debug("Config file %s applies to device %s",
+                                  link->filename,  udev_device_get_sysname(device));
+
+                        *ret = link;
+
+                        return 0;
+                }
+        }
+
+        *ret = NULL;
+
+        return -ENOENT;
+}
+
+static bool mac_is_random(struct udev_device *device) {
+        const char *s;
+        unsigned type;
+        int r;
+
+        /* if we can't get the assign type, assume it is not random */
+        s = udev_device_get_sysattr_value(device, "addr_assign_type");
+        if (!s)
+                return false;
+
+        r = safe_atou(s, &type);
+        if (r < 0)
+                return false;
+
+        return type == NET_ADDR_RANDOM;
+}
+
+static bool should_rename(struct udev_device *device, bool respect_predictable) {
+        const char *s;
+        unsigned type;
+        int r;
+
+        /* if we can't get the assgin type, assume we should rename */
+        s = udev_device_get_sysattr_value(device, "name_assign_type");
+        if (!s)
+                return true;
+
+        r = safe_atou(s, &type);
+        if (r < 0)
+                return true;
+
+        switch (type) {
+        case NET_NAME_USER:
+        case NET_NAME_RENAMED:
+                /* these were already named by userspace, do not touch again */
+                return false;
+        case NET_NAME_PREDICTABLE:
+                /* the kernel claims to have given a predictable name */
+                if (respect_predictable)
+                        return false;
+                /* fall through */
+        case NET_NAME_ENUM:
+        default:
+                /* the name is known to be bad, or of an unknown type */
+                return true;
+        }
+}
+
+static int get_mac(struct udev_device *device, bool want_random,
+                   struct ether_addr *mac) {
+        int r;
+
+        if (want_random)
+                random_bytes(mac->ether_addr_octet, ETH_ALEN);
+        else {
+                uint64_t result;
+
+                r = net_get_unique_predictable_data(device, &result);
+                if (r < 0)
+                        return r;
+
+                assert_cc(ETH_ALEN <= sizeof(result));
+                memcpy(mac->ether_addr_octet, &result, ETH_ALEN);
+        }
+
+        /* see eth_random_addr in the kernel */
+        mac->ether_addr_octet[0] &= 0xfe;  /* clear multicast bit */
+        mac->ether_addr_octet[0] |= 0x02;  /* set local assignment bit (IEEE802) */
+
+        return 0;
+}
+
+int link_config_apply(link_config_ctx *ctx, link_config *config,
+                      struct udev_device *device, const char **name) {
+        const char *old_name;
+        const char *new_name = NULL;
+        struct ether_addr generated_mac;
+        struct ether_addr *mac = NULL;
+        bool respect_predictable = false;
+        int r, ifindex;
+
+        assert(ctx);
+        assert(config);
+        assert(device);
+        assert(name);
+
+        old_name = udev_device_get_sysname(device);
+        if (!old_name)
+                return -EINVAL;
+
+        r = ethtool_set_speed(&ctx->ethtool_fd, old_name, config->speed / 1024, config->duplex);
+        if (r < 0)
+                log_warning_errno(r, "Could not set speed or duplex of %s to %zu Mbps (%s): %m",
+                                  old_name, config->speed / 1024,
+                                  duplex_to_string(config->duplex));
+
+        r = ethtool_set_wol(&ctx->ethtool_fd, old_name, config->wol);
+        if (r < 0)
+                log_warning_errno(r, "Could not set WakeOnLan of %s to %s: %m",
+                                  old_name, wol_to_string(config->wol));
+
+        r = ethtool_set_features(&ctx->ethtool_fd, old_name, config->features);
+        if (r < 0)
+                log_warning_errno(r, "Could not set offload features of %s: %m", old_name);
+
+        ifindex = udev_device_get_ifindex(device);
+        if (ifindex <= 0) {
+                log_warning("Could not find ifindex");
+                return -ENODEV;
+        }
+
+        if (ctx->enable_name_policy && config->name_policy) {
+                NamePolicy *policy;
+
+                for (policy = config->name_policy;
+                     !new_name && *policy != _NAMEPOLICY_INVALID; policy++) {
+                        switch (*policy) {
+                                case NAMEPOLICY_KERNEL:
+                                        respect_predictable = true;
+                                        break;
+                                case NAMEPOLICY_DATABASE:
+                                        new_name = udev_device_get_property_value(device, "ID_NET_NAME_FROM_DATABASE");
+                                        break;
+                                case NAMEPOLICY_ONBOARD:
+                                        new_name = udev_device_get_property_value(device, "ID_NET_NAME_ONBOARD");
+                                        break;
+                                case NAMEPOLICY_SLOT:
+                                        new_name = udev_device_get_property_value(device, "ID_NET_NAME_SLOT");
+                                        break;
+                                case NAMEPOLICY_PATH:
+                                        new_name = udev_device_get_property_value(device, "ID_NET_NAME_PATH");
+                                        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) {
+                                        log_warning_errno(r, "Could not generate persistent MAC address for %s: %m", old_name);
+                                        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) {
+                                        log_warning_errno(r, "Could not generate random MAC address for %s: %m", old_name);
+                                        break;
+                                } else if (r < 0)
+                                        return r;
+                                mac = &generated_mac;
+                        }
+                        break;
+                case MACPOLICY_NONE:
+                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 = NULL;
+        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",
+        [MACPOLICY_NONE] = "none"
+};
+
+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");
diff --git a/src/grp-udev/libudev-core/net/link-config.h b/src/grp-udev/libudev-core/net/link-config.h
new file mode 100644
index 0000000000..59c1780d70
--- /dev/null
+++ b/src/grp-udev/libudev-core/net/link-config.h
@@ -0,0 +1,100 @@
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2013 Tom Gundersen <teg@jklm.no>
+
+  systemd is free software; you can redistribute it and/or modify it
+  under the terms of the GNU Lesser General Public License as published by
+  the Free Software Foundation; either version 2.1 of the License, or
+  (at your option) any later version.
+
+  systemd is distributed in the hope that it will be useful, but
+  WITHOUT ANY WARRANTY; without even the implied warranty of
+  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
+  Lesser General Public License for more details.
+
+  You should have received a copy of the GNU Lesser General Public License
+  along with systemd; If not, see <http://www.gnu.org/licenses/>.
+***/
+
+#include <libudev.h>
+
+#include "systemd-basic/list.h"
+#include "systemd-shared/condition.h"
+
+#include "ethtool-util.h"
+
+typedef struct link_config_ctx link_config_ctx;
+typedef struct link_config link_config;
+
+typedef enum MACPolicy {
+        MACPOLICY_PERSISTENT,
+        MACPOLICY_RANDOM,
+        MACPOLICY_NONE,
+        _MACPOLICY_MAX,
+        _MACPOLICY_INVALID = -1
+} MACPolicy;
+
+typedef enum NamePolicy {
+        NAMEPOLICY_KERNEL,
+        NAMEPOLICY_DATABASE,
+        NAMEPOLICY_ONBOARD,
+        NAMEPOLICY_SLOT,
+        NAMEPOLICY_PATH,
+        NAMEPOLICY_MAC,
+        _NAMEPOLICY_MAX,
+        _NAMEPOLICY_INVALID = -1
+} NamePolicy;
+
+struct link_config {
+        char *filename;
+
+        struct ether_addr *match_mac;
+        char **match_path;
+        char **match_driver;
+        char **match_type;
+        char **match_name;
+        Condition *match_host;
+        Condition *match_virt;
+        Condition *match_kernel;
+        Condition *match_arch;
+
+        char *description;
+        struct ether_addr *mac;
+        MACPolicy mac_policy;
+        NamePolicy *name_policy;
+        char *name;
+        char *alias;
+        size_t mtu;
+        size_t speed;
+        Duplex duplex;
+        WakeOnLan wol;
+        NetDevFeature features[_NET_DEV_FEAT_MAX];
+
+        LIST_FIELDS(link_config, links);
+};
+
+int link_config_ctx_new(link_config_ctx **ret);
+void link_config_ctx_free(link_config_ctx *ctx);
+
+int link_config_load(link_config_ctx *ctx);
+bool link_config_should_reload(link_config_ctx *ctx);
+
+int link_config_get(link_config_ctx *ctx, struct udev_device *device, struct link_config **ret);
+int link_config_apply(link_config_ctx *ctx, struct link_config *config, struct udev_device *device, const char **name);
+
+int link_get_driver(link_config_ctx *ctx, struct udev_device *device, char **ret);
+
+const char *name_policy_to_string(NamePolicy p) _const_;
+NamePolicy name_policy_from_string(const char *p) _pure_;
+
+const char *mac_policy_to_string(MACPolicy p) _const_;
+MACPolicy mac_policy_from_string(const char *p) _pure_;
+
+/* gperf lookup function */
+const struct ConfigPerfItem* link_config_gperf_lookup(const char *key, unsigned length);
+
+int config_parse_mac_policy(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);
+int config_parse_name_policy(const char *unit, const char *filename, unsigned line, const char *section, unsigned section_line, const char *lvalue, int ltype, const char *rvalue, void *data, void *userdata);