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keyfile: add ability to read/write qdiscs from tc setting

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The format for qdiscs is

  qdisc.<parent>=[handle <handle>] <qdisc> [<options>...]

E.g.:

  [tc]
  qdisc.root=fq_codel handle de4d:
  qdisc.ffff:fff1=ingress

That is pretty much what is supported at this point.
This commit is contained in:
Lubomir Rintel 2017-11-18 17:16:50 +01:00
parent 0ab77ebd1d
commit 9d0eeb30b6
2 changed files with 91 additions and 2 deletions
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55
libnm-core/nm-keyfile-reader.c
View file

@ -16,7 +16,7 @@
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright (C) 2008 - 2009 Novell, Inc.
* Copyright (C) 2008 - 2015 Red Hat, Inc.
* Copyright (C) 2008 - 2017 Red Hat, Inc.
*/
#include "nm-default.h"
@ -30,6 +30,7 @@
#include <sys/types.h>
#include <arpa/inet.h>
#include <string.h>
#include <linux/pkt_sched.h>
#include "nm-common-macros.h"
#include "nm-core-internal.h"
@ -1313,6 +1314,54 @@ team_config_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key
g_object_set (G_OBJECT (setting), key, conf, NULL);
}
static void
qdisc_parser (KeyfileReaderInfo *info, NMSetting *setting, const char *key)
{
const char *setting_name = nm_setting_get_name (setting);
GPtrArray *qdiscs;
gchar **keys = NULL;
gsize n_keys = 0;
int i;
qdiscs = g_ptr_array_new_with_free_func ((GDestroyNotify) nm_tc_qdisc_unref);
keys = nm_keyfile_plugin_kf_get_keys (info->keyfile, setting_name, &n_keys, NULL);
if (!keys || n_keys == 0)
return;
for (i = 0; i < n_keys; i++) {
NMTCQdisc *qdisc;
const char *qdisc_parent;
gs_free char *qdisc_rest = NULL;
gs_free char *qdisc_str = NULL;
gs_free_error GError *err = NULL;
if (!g_str_has_prefix (keys[i], "qdisc."))
continue;
qdisc_parent = keys[i] + sizeof ("qdisc.") - 1;
qdisc_rest = nm_keyfile_plugin_kf_get_string (info->keyfile, setting_name, keys[i], NULL);
qdisc_str = g_strdup_printf ("%s%s %s",
_nm_utils_parse_tc_handle (qdisc_parent, NULL) != TC_H_UNSPEC ? "parent " : "",
qdisc_parent,
qdisc_rest);
qdisc = nm_utils_tc_qdisc_from_str (qdisc_str, &err);
if (!qdisc) {
handle_warn (info, keys[i], NM_KEYFILE_WARN_SEVERITY_WARN,
_("invalid qdisc: %s"),
err->message);
} else {
g_ptr_array_add (qdiscs, qdisc);
}
}
if (qdiscs->len >= 1)
g_object_set (setting, key, qdiscs, NULL);
g_ptr_array_unref (qdiscs);
}
typedef struct {
const char *setting_name;
const char *key;
@ -1439,6 +1488,10 @@ static KeyParser key_parsers[] = {
NM_SETTING_TEAM_CONFIG,
TRUE,
team_config_parser },
{ NM_SETTING_TC_CONFIG_SETTING_NAME,
NM_SETTING_TC_CONFIG_QDISCS,
FALSE,
qdisc_parser },
{ NULL, NULL, FALSE }
};

38
libnm-core/nm-keyfile-writer.c
View file

@ -16,7 +16,7 @@
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright (C) 2008 Novell, Inc.
* Copyright (C) 2008 - 2015 Red Hat, Inc.
* Copyright (C) 2008 - 2017 Red Hat, Inc.
*/
#include "nm-default.h"
@ -253,6 +253,39 @@ route_writer (KeyfileWriterInfo *info,
write_ip_values (info->keyfile, setting_name, array, NULL, TRUE);
}
static void
qdisc_writer (KeyfileWriterInfo *info,
NMSetting *setting,
const char *key,
const GValue *value)
{
gsize i;
GPtrArray *array;
array = (GPtrArray *) g_value_get_boxed (value);
if (!array || !array->len)
return;
for (i = 0; i < array->len; i++) {
NMTCQdisc *qdisc = array->pdata[i];
GString *key_name = g_string_sized_new (16);
GString *value_str = g_string_sized_new (60);
g_string_append (key_name, "qdisc.");
_nm_utils_string_append_tc_parent (key_name, NULL,
nm_tc_qdisc_get_parent (qdisc));
_nm_utils_string_append_tc_qdisc_rest (value_str, qdisc);
nm_keyfile_plugin_kf_set_string (info->keyfile,
NM_SETTING_TC_CONFIG_SETTING_NAME,
key_name->str,
value_str->str);
g_string_free (key_name, TRUE);
g_string_free (value_str, TRUE);
}
}
static void
write_hash_of_string (GKeyFile *file,
NMSetting *setting,
@ -585,6 +618,9 @@ static KeyWriter key_writers[] = {
{ NM_SETTING_802_1X_SETTING_NAME,
NM_SETTING_802_1X_PHASE2_PRIVATE_KEY,
cert_writer },
{ NM_SETTING_TC_CONFIG_SETTING_NAME,
NM_SETTING_TC_CONFIG_QDISCS,
qdisc_writer },
{ NM_SETTING_TEAM_SETTING_NAME,
NM_SETTING_TEAM_NOTIFY_PEERS_COUNT,
null_writer},