-/***
- 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/>.
-***/
+/* SPDX-License-Identifier: LGPL-2.1+ */
#include <netinet/ether.h>
+#include "sd-device.h"
#include "sd-netlink.h"
#include "alloc-util.h"
#include "conf-files.h"
#include "conf-parser.h"
+#include "device-util.h"
#include "ethtool-util.h"
#include "fd-util.h"
-#include "libudev-private.h"
#include "link-config.h"
#include "log.h"
-#include "missing.h"
+#include "missing_network.h"
+#include "naming-scheme.h"
#include "netlink-util.h"
#include "network-internal.h"
#include "parse-util.h"
"/etc/systemd/network",
"/run/systemd/network",
"/usr/lib/systemd/network",
-#ifdef HAVE_SPLIT_USR
+#if HAVE_SPLIT_USR
"/lib/systemd/network",
#endif
NULL};
free(link->filename);
- free(link->match_mac);
+ set_free_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_kernel_cmdline);
+ free(link->match_kernel_version);
free(link->match_arch);
free(link->description);
ctx->enable_name_policy = true;
- *ret = ctx;
- ctx = NULL;
+ *ret = TAKE_PTR(ctx);
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 i;
int r;
assert(ctx);
link->port = _NET_DEV_PORT_INVALID;
link->autonegotiation = -1;
- memset(&link->features, -1, sizeof(link->features));
+ for (i = 0; i < (int)ELEMENTSOF(link->features); i++)
+ link->features[i] = -1;
r = config_parse(NULL, filename, file,
"Match\0Link\0Ethernet\0",
config_item_perf_lookup, link_config_gperf_lookup,
- false, false, true, link);
+ CONFIG_PARSE_WARN, link);
if (r < 0)
return r;
else
log_debug("Parsed configuration file %s", filename);
- if (link->mtu > UINT_MAX || link->speed > UINT_MAX)
+ if (link->speed > UINT_MAX)
return -ERANGE;
link->filename = strdup(filename);
+ if (!link->filename)
+ return log_oom();
LIST_PREPEND(links, ctx->links, link);
link = NULL;
return proc_cmdline_get_bool("net.ifnames", &b) <= 0 || b;
}
+static int link_name_type(sd_device *device, unsigned *type) {
+ const char *s;
+ int r;
+
+ r = sd_device_get_sysattr_value(device, "name_assign_type", &s);
+ if (r < 0)
+ return log_device_debug_errno(device, r, "Failed to query name_assign_type: %m");
+
+ r = safe_atou(s, type);
+ if (r < 0)
+ return log_device_warning_errno(device, r, "Failed to parse name_assign_type \"%s\": %m", s);
+
+ log_device_debug(device, "Device has name_assign_type=%d", *type);
+ return 0;
+}
+
int link_config_load(link_config_ctx *ctx) {
_cleanup_strv_free_ char **files;
char **f;
/* update timestamp */
paths_check_timestamp(link_dirs, &ctx->link_dirs_ts_usec, true);
- r = conf_files_list_strv(&files, ".link", NULL, link_dirs);
+ r = conf_files_list_strv(&files, ".link", NULL, 0, link_dirs);
if (r < 0)
return log_error_errno(r, "failed to enumerate link files: %m");
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) {
+int link_config_get(link_config_ctx *ctx, sd_device *device, link_config **ret) {
link_config *link;
assert(ctx);
assert(ret);
LIST_FOREACH(links, link, ctx->links) {
- const char* attr_value;
+ const char *address = NULL, *id_path = NULL, *parent_driver = NULL, *id_net_driver = NULL, *devtype = NULL, *sysname = NULL;
+ sd_device *parent;
- attr_value = udev_device_get_sysattr_value(device, "address");
+ (void) sd_device_get_sysattr_value(device, "address", &address);
+ (void) sd_device_get_property_value(device, "ID_PATH", &id_path);
+ if (sd_device_get_parent(device, &parent) >= 0)
+ (void) sd_device_get_driver(parent, &parent_driver);
+ (void) sd_device_get_property_value(device, "ID_NET_DRIVER", &id_net_driver);
+ (void) sd_device_get_devtype(device, &devtype);
+ (void) sd_device_get_sysname(device, &sysname);
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))) {
+ link->match_virt, link->match_kernel_cmdline,
+ link->match_kernel_version, link->match_arch,
+ address ? ether_aton(address) : NULL,
+ id_path,
+ parent_driver,
+ id_net_driver,
+ devtype,
+ sysname)) {
if (link->match_name) {
unsigned char name_assign_type = NET_NAME_UNKNOWN;
+ const char *attr_value;
- attr_value = udev_device_get_sysattr_value(device, "name_assign_type");
- if (attr_value)
+ if (sd_device_get_sysattr_value(device, "name_assign_type", &attr_value) >= 0)
(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));
+ link->filename, sysname);
*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));
+ link->filename, sysname);
continue;
}
}
log_debug("Config file %s applies to device %s",
- link->filename, udev_device_get_sysname(device));
+ link->filename, sysname);
*ret = link;
-
return 0;
}
}
*ret = NULL;
-
return -ENOENT;
}
-static bool mac_is_random(struct udev_device *device) {
+static bool mac_is_random(sd_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)
+ if (sd_device_get_sysattr_value(device, "addr_assign_type", &s) < 0)
return false;
r = safe_atou(s, &type);
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) {
+static int get_mac(sd_device *device, bool want_random, struct ether_addr *mac) {
int r;
if (want_random)
}
int link_config_apply(link_config_ctx *ctx, link_config *config,
- struct udev_device *device, const char **name) {
- bool respect_predictable = false;
+ sd_device *device, const char **name) {
struct ether_addr generated_mac;
struct ether_addr *mac = NULL;
const char *new_name = NULL;
const char *old_name;
- unsigned speed;
+ unsigned speed, name_type = NET_NAME_UNKNOWN;
+ NamePolicy policy;
int r, ifindex;
assert(ctx);
assert(device);
assert(name);
- old_name = udev_device_get_sysname(device);
- if (!old_name)
- return -EINVAL;
+ r = sd_device_get_sysname(device, &old_name);
+ if (r < 0)
+ return r;
r = ethtool_set_glinksettings(&ctx->ethtool_fd, old_name, config);
if (r < 0) {
if (config->port != _NET_DEV_PORT_INVALID)
- log_warning_errno(r, "Could not set port (%s) of %s: %m", port_to_string(config->port), old_name);
+ log_warning_errno(r, "Could not set port (%s) of %s: %m", port_to_string(config->port), old_name);
- speed = DIV_ROUND_UP(config->speed, 1000000);
- if (r == -EOPNOTSUPP)
- r = ethtool_set_speed(&ctx->ethtool_fd, old_name, speed, config->duplex);
+ if (!eqzero(config->advertise))
+ log_warning_errno(r, "Could not set advertise mode: %m"); /* TODO: include modes in the log message. */
- if (r < 0)
- log_warning_errno(r, "Could not set speed or duplex of %s to %u Mbps (%s): %m",
- old_name, speed, duplex_to_string(config->duplex));
+ if (config->speed) {
+ speed = DIV_ROUND_UP(config->speed, 1000000);
+ if (r == -EOPNOTSUPP) {
+ r = ethtool_set_speed(&ctx->ethtool_fd, old_name, speed, config->duplex);
+ if (r < 0)
+ log_warning_errno(r, "Could not set speed of %s to %u Mbps: %m", old_name, speed);
+ }
+ }
+
+ if (config->duplex !=_DUP_INVALID)
+ log_warning_errno(r, "Could not set duplex of %s to (%s): %m", old_name, 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 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 (config->channels.rx_count_set || config->channels.tx_count_set || config->channels.other_count_set || config->channels.combined_count_set) {
+ r = ethtool_set_channels(&ctx->ethtool_fd, old_name, &config->channels);
+ if (r < 0)
+ log_warning_errno(r, "Could not set channels of %s: %m", old_name);
}
- if (ctx->enable_name_policy && config->name_policy) {
- NamePolicy *policy;
+ r = sd_device_get_ifindex(device, &ifindex);
+ if (r < 0)
+ return log_device_warning_errno(device, r, "Could not find ifindex: %m");
- 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;
+
+ (void) link_name_type(device, &name_type);
+
+ if (IN_SET(name_type, NET_NAME_USER, NET_NAME_RENAMED)
+ && !naming_scheme_has(NAMING_ALLOW_RERENAMES)) {
+ log_device_debug(device, "Device already has a name given by userspace, not renaming.");
+ goto no_rename;
+ }
+
+ if (ctx->enable_name_policy && config->name_policy)
+ for (NamePolicy *p = config->name_policy; !new_name && *p != _NAMEPOLICY_INVALID; p++) {
+ policy = *p;
+
+ switch (policy) {
+ case NAMEPOLICY_KERNEL:
+ if (name_type != NET_NAME_PREDICTABLE)
+ continue;
+
+ /* The kernel claims to have given a predictable name, keep it. */
+ log_device_debug(device, "Policy *%s*: keeping predictable kernel name",
+ name_policy_to_string(policy));
+ goto no_rename;
+ case NAMEPOLICY_KEEP:
+ if (!IN_SET(name_type, NET_NAME_USER, NET_NAME_RENAMED))
+ continue;
+
+ log_device_debug(device, "Policy *%s*: keeping existing userspace name",
+ name_policy_to_string(policy));
+ goto no_rename;
+ case NAMEPOLICY_DATABASE:
+ (void) sd_device_get_property_value(device, "ID_NET_NAME_FROM_DATABASE", &new_name);
+ break;
+ case NAMEPOLICY_ONBOARD:
+ (void) sd_device_get_property_value(device, "ID_NET_NAME_ONBOARD", &new_name);
+ break;
+ case NAMEPOLICY_SLOT:
+ (void) sd_device_get_property_value(device, "ID_NET_NAME_SLOT", &new_name);
+ break;
+ case NAMEPOLICY_PATH:
+ (void) sd_device_get_property_value(device, "ID_NET_NAME_PATH", &new_name);
+ break;
+ case NAMEPOLICY_MAC:
+ (void) sd_device_get_property_value(device, "ID_NET_NAME_MAC", &new_name);
+ break;
+ default:
+ assert_not_reached("invalid policy");
}
}
- }
- if (should_rename(device, respect_predictable)) {
- /* if not set by policy, fall back manually set name */
- if (!new_name)
- new_name = config->name;
+ if (new_name)
+ log_device_debug(device, "Policy *%s* yields \"%s\".", name_policy_to_string(policy), new_name);
+ else if (config->name) {
+ new_name = config->name;
+ log_device_debug(device, "Policies didn't yield a name, using specified Name=%s.", new_name);
} else
- new_name = NULL;
+ log_device_debug(device, "Policies didn't yield a name and Name= is not given, not renaming.");
+ no_rename:
switch (config->mac_policy) {
case MACPOLICY_PERSISTENT:
if (mac_is_random(device)) {
r = get_mac(device, false, &generated_mac);
- if (r == -ENOENT) {
+ if (r == -ENODATA) {
log_warning_errno(r, "Could not generate persistent MAC address for %s: %m", old_name);
break;
} else if (r < 0)
case MACPOLICY_RANDOM:
if (!mac_is_random(device)) {
r = get_mac(device, true, &generated_mac);
- if (r == -ENOENT) {
+ if (r == -ENODATA) {
log_warning_errno(r, "Could not generate random MAC address for %s: %m", old_name);
break;
} else if (r < 0)
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);
+ 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) {
+int link_get_driver(link_config_ctx *ctx, sd_device *device, char **ret) {
const char *name;
char *driver = NULL;
int r;
- name = udev_device_get_sysname(device);
- if (!name)
- return -EINVAL;
+ r = sd_device_get_sysname(device, &name);
+ if (r < 0)
+ return r;
r = ethtool_get_driver(&ctx->ethtool_fd, name, &driver);
if (r < 0)
static const char* const mac_policy_table[_MACPOLICY_MAX] = {
[MACPOLICY_PERSISTENT] = "persistent",
[MACPOLICY_RANDOM] = "random",
- [MACPOLICY_NONE] = "none"
+ [MACPOLICY_NONE] = "none",
};
DEFINE_STRING_TABLE_LOOKUP(mac_policy, MACPolicy);
static const char* const name_policy_table[_NAMEPOLICY_MAX] = {
[NAMEPOLICY_KERNEL] = "kernel",
+ [NAMEPOLICY_KEEP] = "keep",
[NAMEPOLICY_DATABASE] = "database",
[NAMEPOLICY_ONBOARD] = "onboard",
[NAMEPOLICY_SLOT] = "slot",
[NAMEPOLICY_PATH] = "path",
- [NAMEPOLICY_MAC] = "mac"
+ [NAMEPOLICY_MAC] = "mac",
};
DEFINE_STRING_TABLE_LOOKUP(name_policy, NamePolicy);
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