summaryrefslogtreecommitdiffstats
path: root/src/udev/net/link-config.c
diff options
context:
space:
mode:
Diffstat (limited to 'src/udev/net/link-config.c')
-rw-r--r--src/udev/net/link-config.c359
1 files changed, 342 insertions, 17 deletions
diff --git a/src/udev/net/link-config.c b/src/udev/net/link-config.c
index 910ec27..647cdee 100644
--- a/src/udev/net/link-config.c
+++ b/src/udev/net/link-config.c
@@ -15,6 +15,8 @@
#include "creds-util.h"
#include "device-private.h"
#include "device-util.h"
+#include "env-util.h"
+#include "escape.h"
#include "ethtool-util.h"
#include "fd-util.h"
#include "fileio.h"
@@ -30,12 +32,20 @@
#include "path-util.h"
#include "proc-cmdline.h"
#include "random-util.h"
+#include "specifier.h"
#include "stat-util.h"
#include "string-table.h"
#include "string-util.h"
#include "strv.h"
+#include "udev-builtin.h"
#include "utf8.h"
+static const Specifier link_specifier_table[] = {
+ COMMON_SYSTEM_SPECIFIERS,
+ COMMON_TMP_SPECIFIERS,
+ {}
+};
+
struct LinkConfigContext {
LIST_HEAD(LinkConfig, configs);
int ethtool_fd;
@@ -53,6 +63,9 @@ static LinkConfig* link_config_free(LinkConfig *config) {
condition_free_list(config->conditions);
free(config->description);
+ strv_free(config->properties);
+ strv_free(config->import_properties);
+ strv_free(config->unset_properties);
free(config->name_policy);
free(config->name);
strv_free(config->alternative_names);
@@ -60,6 +73,7 @@ static LinkConfig* link_config_free(LinkConfig *config) {
free(config->alias);
free(config->wol_password_file);
erase_and_free(config->wol_password);
+ cpu_set_free(config->rps_cpu_mask);
ordered_hashmap_free_with_destructor(config->sr_iov_by_section, sr_iov_free);
@@ -363,18 +377,20 @@ Link *link_free(Link *link) {
return NULL;
sd_device_unref(link->device);
+ sd_device_unref(link->device_db_clone);
free(link->kind);
strv_free(link->altnames);
return mfree(link);
}
-int link_new(LinkConfigContext *ctx, sd_netlink **rtnl, sd_device *device, Link **ret) {
+int link_new(LinkConfigContext *ctx, sd_netlink **rtnl, sd_device *device, sd_device *device_db_clone, Link **ret) {
_cleanup_(link_freep) Link *link = NULL;
int r;
assert(ctx);
assert(rtnl);
assert(device);
+ assert(device_db_clone);
assert(ret);
link = new(Link, 1);
@@ -383,6 +399,7 @@ int link_new(LinkConfigContext *ctx, sd_netlink **rtnl, sd_device *device, Link
*link = (Link) {
.device = sd_device_ref(device),
+ .device_db_clone = sd_device_ref(device_db_clone),
};
r = sd_device_get_sysname(device, &link->ifname);
@@ -466,7 +483,7 @@ int link_get_config(LinkConfigContext *ctx, Link *link) {
return -ENOENT;
}
-static int link_apply_ethtool_settings(Link *link, int *ethtool_fd) {
+static int link_apply_ethtool_settings(Link *link, int *ethtool_fd, EventMode mode) {
LinkConfig *config;
const char *name;
int r;
@@ -475,6 +492,11 @@ static int link_apply_ethtool_settings(Link *link, int *ethtool_fd) {
assert(link->config);
assert(ethtool_fd);
+ if (mode != EVENT_UDEV_WORKER) {
+ log_link_debug(link, "Running in test mode, skipping application of ethtool settings.");
+ return 0;
+ }
+
config = link->config;
name = link->ifname;
@@ -667,7 +689,7 @@ finalize:
return 0;
}
-static int link_apply_rtnl_settings(Link *link, sd_netlink **rtnl) {
+static int link_apply_rtnl_settings(Link *link, sd_netlink **rtnl, EventMode mode) {
struct hw_addr_data hw_addr = {};
LinkConfig *config;
int r;
@@ -676,6 +698,11 @@ static int link_apply_rtnl_settings(Link *link, sd_netlink **rtnl) {
assert(link->config);
assert(rtnl);
+ if (mode != EVENT_UDEV_WORKER) {
+ log_link_debug(link, "Running in test mode, skipping application of rtnl settings.");
+ return 0;
+ }
+
config = link->config;
(void) link_generate_new_hw_addr(link, &hw_addr);
@@ -725,7 +752,7 @@ static int link_generate_new_name(Link *link) {
device = link->device;
if (link->action != SD_DEVICE_ADD) {
- log_link_debug(link, "Skipping to apply Name= and NamePolicy= on '%s' uevent.",
+ log_link_debug(link, "Not applying Name= and NamePolicy= on '%s' uevent.",
device_action_to_string(link->action));
goto no_rename;
}
@@ -805,7 +832,7 @@ static int link_generate_alternative_names(Link *link) {
assert(!link->altnames);
if (link->action != SD_DEVICE_ADD) {
- log_link_debug(link, "Skipping to apply AlternativeNames= and AlternativeNamesPolicy= on '%s' uevent.",
+ log_link_debug(link, "Not applying AlternativeNames= and AlternativeNamesPolicy= on '%s' uevent.",
device_action_to_string(link->action));
return 0;
}
@@ -879,7 +906,7 @@ static int sr_iov_configure(Link *link, sd_netlink **rtnl, SRIOV *sr_iov) {
return 0;
}
-static int link_apply_sr_iov_config(Link *link, sd_netlink **rtnl) {
+static int link_apply_sr_iov_config(Link *link, sd_netlink **rtnl, EventMode mode) {
SRIOV *sr_iov;
uint32_t n;
int r;
@@ -888,6 +915,11 @@ static int link_apply_sr_iov_config(Link *link, sd_netlink **rtnl) {
assert(link->config);
assert(link->device);
+ if (mode != EVENT_UDEV_WORKER) {
+ log_link_debug(link, "Running in test mode, skipping application of SR-IOV settings.");
+ return 0;
+ }
+
r = sr_iov_set_num_vfs(link->device, link->config->sr_iov_num_vfs, link->config->sr_iov_by_section);
if (r < 0)
log_link_warning_errno(link, r, "Failed to set the number of SR-IOV virtual functions, ignoring: %m");
@@ -921,26 +953,122 @@ static int link_apply_sr_iov_config(Link *link, sd_netlink **rtnl) {
return 0;
}
-int link_apply_config(LinkConfigContext *ctx, sd_netlink **rtnl, Link *link) {
+static int link_apply_rps_cpu_mask(Link *link, EventMode mode) {
+ _cleanup_free_ char *mask_str = NULL;
+ LinkConfig *config;
int r;
- assert(ctx);
- assert(rtnl);
assert(link);
+ config = ASSERT_PTR(link->config);
- if (!IN_SET(link->action, SD_DEVICE_ADD, SD_DEVICE_BIND, SD_DEVICE_MOVE)) {
- log_link_debug(link, "Skipping to apply .link settings on '%s' uevent.",
- device_action_to_string(link->action));
+ if (mode != EVENT_UDEV_WORKER) {
+ log_link_debug(link, "Running in test mode, skipping application of RPS setting.");
+ return 0;
+ }
- link->new_name = link->ifname;
+ /* Skip if the config is not specified. */
+ if (!config->rps_cpu_mask)
return 0;
+
+ mask_str = cpu_set_to_mask_string(config->rps_cpu_mask);
+ if (!mask_str)
+ return log_oom();
+
+ log_link_debug(link, "Applying RPS CPU mask: %s", mask_str);
+
+ /* Currently, this will set CPU mask to all rx queue of matched device. */
+ FOREACH_DEVICE_SYSATTR(link->device, attr) {
+ const char *c;
+
+ c = path_startswith(attr, "queues/");
+ if (!c)
+ continue;
+
+ c = startswith(c, "rx-");
+ if (!c)
+ continue;
+
+ c += strcspn(c, "/");
+
+ if (!path_equal(c, "/rps_cpus"))
+ continue;
+
+ r = sd_device_set_sysattr_value(link->device, attr, mask_str);
+ if (r < 0)
+ log_link_warning_errno(link, r, "Failed to write %s sysfs attribute, ignoring: %m", attr);
+ }
+
+ return 0;
+}
+
+static int link_apply_udev_properties(Link *link, EventMode mode) {
+ LinkConfig *config;
+ sd_device *device;
+
+ assert(link);
+
+ config = ASSERT_PTR(link->config);
+ device = ASSERT_PTR(link->device);
+
+ /* 1. apply ImportProperty=. */
+ STRV_FOREACH(p, config->import_properties)
+ (void) udev_builtin_import_property(device, link->device_db_clone, mode, *p);
+
+ /* 2. apply Property=. */
+ STRV_FOREACH(p, config->properties) {
+ _cleanup_free_ char *key = NULL;
+ const char *eq;
+
+ eq = strchr(*p, '=');
+ if (!eq)
+ continue;
+
+ key = strndup(*p, eq - *p);
+ if (!key)
+ return log_oom();
+
+ (void) udev_builtin_add_property(device, mode, key, eq + 1);
+ }
+
+ /* 3. apply UnsetProperty=. */
+ STRV_FOREACH(p, config->unset_properties)
+ (void) udev_builtin_add_property(device, mode, *p, NULL);
+
+ /* 4. set the default properties. */
+ (void) udev_builtin_add_property(device, mode, "ID_NET_LINK_FILE", config->filename);
+
+ _cleanup_free_ char *joined = NULL;
+ STRV_FOREACH(d, config->dropins) {
+ _cleanup_free_ char *escaped = NULL;
+
+ escaped = xescape(*d, ":");
+ if (!escaped)
+ return log_oom();
+
+ if (!strextend_with_separator(&joined, ":", escaped))
+ return log_oom();
}
- r = link_apply_ethtool_settings(link, &ctx->ethtool_fd);
+ (void) udev_builtin_add_property(device, mode, "ID_NET_LINK_FILE_DROPINS", joined);
+
+ if (link->new_name)
+ (void) udev_builtin_add_property(device, mode, "ID_NET_NAME", link->new_name);
+
+ return 0;
+}
+
+int link_apply_config(LinkConfigContext *ctx, sd_netlink **rtnl, Link *link, EventMode mode) {
+ int r;
+
+ assert(ctx);
+ assert(rtnl);
+ assert(link);
+
+ r = link_apply_ethtool_settings(link, &ctx->ethtool_fd, mode);
if (r < 0)
return r;
- r = link_apply_rtnl_settings(link, rtnl);
+ r = link_apply_rtnl_settings(link, rtnl, mode);
if (r < 0)
return r;
@@ -952,11 +1080,151 @@ int link_apply_config(LinkConfigContext *ctx, sd_netlink **rtnl, Link *link) {
if (r < 0)
return r;
- r = link_apply_sr_iov_config(link, rtnl);
+ r = link_apply_sr_iov_config(link, rtnl, mode);
if (r < 0)
return r;
- return 0;
+ r = link_apply_rps_cpu_mask(link, mode);
+ if (r < 0)
+ return r;
+
+ return link_apply_udev_properties(link, mode);
+}
+
+int config_parse_udev_property(
+ 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) {
+
+ char ***properties = ASSERT_PTR(data);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ /* Empty assignment resets the list */
+ *properties = strv_free(*properties);
+ return 0;
+ }
+
+ for (const char *p = rvalue;; ) {
+ _cleanup_free_ char *word = NULL, *resolved = NULL, *key = NULL;
+ const char *eq;
+
+ r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Invalid syntax, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+ if (r == 0)
+ return 0;
+
+ r = specifier_printf(word, SIZE_MAX, link_specifier_table, NULL, NULL, &resolved);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to resolve specifiers in %s, ignoring assignment: %m", word);
+ continue;
+ }
+
+ /* The restriction for udev property is not clear. Let's apply the one for environment variable here. */
+ if (!env_assignment_is_valid(resolved)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Invalid udev property, ignoring assignment: %s", word);
+ continue;
+ }
+
+ assert_se(eq = strchr(resolved, '='));
+ key = strndup(resolved, eq - resolved);
+ if (!key)
+ return log_oom();
+
+ if (!device_property_can_set(key)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Invalid udev property name '%s', ignoring assignment: %s", key, resolved);
+ continue;
+ }
+
+ r = strv_env_replace_consume(properties, TAKE_PTR(resolved));
+ if (r < 0)
+ return log_error_errno(r, "Failed to update properties: %m");
+ }
+}
+
+int config_parse_udev_property_name(
+ 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) {
+
+ char ***properties = ASSERT_PTR(data);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ /* Empty assignment resets the list */
+ *properties = strv_free(*properties);
+ return 0;
+ }
+
+ for (const char *p = rvalue;; ) {
+ _cleanup_free_ char *word = NULL, *resolved = NULL;
+
+ r = extract_first_word(&p, &word, NULL, EXTRACT_CUNESCAPE|EXTRACT_UNQUOTE);
+ if (r == -ENOMEM)
+ return log_oom();
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Invalid syntax, ignoring assignment: %s", rvalue);
+ return 0;
+ }
+ if (r == 0)
+ return 0;
+
+ r = specifier_printf(word, SIZE_MAX, link_specifier_table, NULL, NULL, &resolved);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to resolve specifiers in %s, ignoring assignment: %m", word);
+ continue;
+ }
+
+ /* The restriction for udev property is not clear. Let's apply the one for environment variable here. */
+ if (!env_name_is_valid(resolved)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Invalid udev property name, ignoring assignment: %s", resolved);
+ continue;
+ }
+
+ if (!device_property_can_set(resolved)) {
+ log_syntax(unit, LOG_WARNING, filename, line, 0,
+ "Invalid udev property name, ignoring assignment: %s", resolved);
+ continue;
+ }
+
+ r = strv_consume(properties, TAKE_PTR(resolved));
+ if (r < 0)
+ return log_error_errno(r, "Failed to update properties: %m");
+ }
}
int config_parse_ifalias(
@@ -1110,6 +1378,63 @@ int config_parse_wol_password(
return 0;
}
+int config_parse_rps_cpu_mask(
+ 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) {
+
+ _cleanup_(cpu_set_freep) CPUSet *allocated = NULL;
+ CPUSet *mask, **rps_cpu_mask = ASSERT_PTR(data);
+ int r;
+
+ assert(filename);
+ assert(lvalue);
+ assert(rvalue);
+
+ if (isempty(rvalue)) {
+ *rps_cpu_mask = cpu_set_free(*rps_cpu_mask);
+ return 0;
+ }
+
+ if (*rps_cpu_mask)
+ mask = *rps_cpu_mask;
+ else {
+ allocated = new0(CPUSet, 1);
+ if (!allocated)
+ return log_oom();
+
+ mask = allocated;
+ }
+
+ if (streq(rvalue, "disable"))
+ cpu_set_reset(mask);
+
+ else if (streq(rvalue, "all")) {
+ r = cpu_mask_add_all(mask);
+ if (r < 0) {
+ log_syntax(unit, LOG_WARNING, filename, line, r,
+ "Failed to create CPU affinity mask representing \"all\" cpus, ignoring: %m");
+ return 0;
+ }
+ } else {
+ r = parse_cpu_set_extend(rvalue, mask, /* warn= */ true, unit, filename, line, lvalue);
+ if (r < 0)
+ return 0;
+ }
+
+ if (allocated)
+ *rps_cpu_mask = TAKE_PTR(allocated);
+
+ return 0;
+}
+
static const char* const mac_address_policy_table[_MAC_ADDRESS_POLICY_MAX] = {
[MAC_ADDRESS_POLICY_PERSISTENT] = "persistent",
[MAC_ADDRESS_POLICY_RANDOM] = "random",
generated by cgit v1.2.3 (git 2.39.1) at 2024-11-15 14:35:46 +0000