[systemd-devel] [PATCH 01/24] sd-dhcp6-client: Add initial DHCPv6 client files
Patrik Flykt
patrik.flykt at linux.intel.com
Fri Jun 13 06:44:51 PDT 2014
Add initial structure definition and functions for setting index, MAC
address, callback and event loop. Define protocol values and states.
---
src/libsystemd-network/dhcp6-protocol.h | 104 ++++++++++++++++
src/libsystemd-network/sd-dhcp6-client.c | 203 +++++++++++++++++++++++++++++++
src/systemd/sd-dhcp6-client.h | 54 ++++++++
3 files changed, 361 insertions(+)
create mode 100644 src/libsystemd-network/dhcp6-protocol.h
create mode 100644 src/libsystemd-network/sd-dhcp6-client.c
create mode 100644 src/systemd/sd-dhcp6-client.h
diff --git a/src/libsystemd-network/dhcp6-protocol.h b/src/libsystemd-network/dhcp6-protocol.h
new file mode 100644
index 0000000..afe1413
--- /dev/null
+++ b/src/libsystemd-network/dhcp6-protocol.h
@@ -0,0 +1,104 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#pragma once
+
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2013 Intel Corporation. All rights reserved.
+
+ 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 "macro.h"
+#include "sparse-endian.h"
+
+struct DHCP6Message {
+ union {
+ struct {
+ uint8_t type;
+ uint8_t _pad[3];
+ } _packed_;
+ be32_t transaction_id;
+ };
+} _packed_;
+
+typedef struct DHCP6Message DHCP6Message;
+
+enum {
+ DHCP6_PORT_SERVER = 547,
+ DHCP6_PORT_CLIENT = 546,
+};
+
+enum {
+ DHCP6_DUID_LLT = 1,
+ DHCP6_DUID_EN = 2,
+ DHCP6_DUID_LL = 3,
+ DHCP6_DUID_UUID = 4,
+};
+
+enum DHCP6State {
+ DHCP6_STATE_STOPPED = 0,
+ DHCP6_STATE_RS = 1,
+};
+
+enum {
+ DHCP6_SOLICIT = 1,
+ DHCP6_ADVERTISE = 2,
+ DHCP6_REQUEST = 3,
+ DHCP6_CONFIRM = 4,
+ DHCP6_RENEW = 5,
+ DHCP6_REBIND = 6,
+ DHCP6_REPLY = 7,
+ DHCP6_RELEASE = 8,
+ DHCP6_DECLINE = 9,
+ DHCP6_RECONFIGURE = 10,
+ DHCP6_INFORMATION_REQUEST = 11,
+ DHCP6_RELAY_FORW = 12,
+ DHCP6_RELAY_REPL = 13,
+ _DHCP6_MESSAGE_MAX = 14,
+};
+
+enum {
+ DHCP6_OPTION_CLIENTID = 1,
+ DHCP6_OPTION_SERVERID = 2,
+ DHCP6_OPTION_IA_NA = 3,
+ DHCP6_OPTION_IA_TA = 4,
+ DHCP6_OPTION_IAADDR = 5,
+ DHCP6_OPTION_ORO = 6,
+ DHCP6_OPTION_PREFERENCE = 7,
+ DHCP6_OPTION_ELAPSED_TIME = 8,
+ DHCP6_OPTION_RELAY_MSG = 9,
+ /* option code 10 is unassigned */
+ DHCP6_OPTION_AUTH = 11,
+ DHCP6_OPTION_UNICAST = 12,
+ DHCP6_OPTION_STATUS_CODE = 13,
+ DHCP6_OPTION_RAPID_COMMIT = 14,
+ DHCP6_OPTION_USER_CLASS = 15,
+ DHCP6_OPTION_VENDOR_CLASS = 16,
+ DHCP6_OPTION_VENDOR_OPTS = 17,
+ DHCP6_OPTION_INTERFACE_ID = 18,
+ DHCP6_OPTION_RECONF_MSG = 19,
+ DHCP6_OPTION_RECONF_ACCEPT = 20,
+};
+
+enum {
+ DHCP6_STATUS_SUCCESS = 0,
+ DHCP6_STATUS_UNSPEC_FAIL = 1,
+ DHCP6_STATUS_NO_ADDRS_AVAIL = 2,
+ DHCP6_STATUS_NO_BINDING = 3,
+ DHCP6_STATUS_NOT_ON_LINK = 4,
+ DHCP6_STATUS_USE_MULTICAST = 5,
+ _DHCP6_STATUS_MAX = 6,
+};
diff --git a/src/libsystemd-network/sd-dhcp6-client.c b/src/libsystemd-network/sd-dhcp6-client.c
new file mode 100644
index 0000000..5063d4a
--- /dev/null
+++ b/src/libsystemd-network/sd-dhcp6-client.c
@@ -0,0 +1,203 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2014 Intel Corporation. All rights reserved.
+
+ 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 <errno.h>
+#include <string.h>
+
+#include "util.h"
+#include "refcnt.h"
+
+#include "sd-dhcp6-client.h"
+#include "dhcp6-protocol.h"
+
+struct sd_dhcp6_client {
+ RefCount n_ref;
+
+ enum DHCP6State state;
+ sd_event *event;
+ int event_priority;
+ int index;
+ struct ether_addr mac_addr;
+ sd_dhcp6_client_cb_t cb;
+ void *userdata;
+};
+
+int sd_dhcp6_client_set_callback(sd_dhcp6_client *client,
+ sd_dhcp6_client_cb_t cb, void *userdata)
+{
+ assert_return(client, -EINVAL);
+
+ client->cb = cb;
+ client->userdata = userdata;
+
+ return 0;
+}
+
+int sd_dhcp6_client_set_index(sd_dhcp6_client *client, int interface_index)
+{
+ assert_return(client, -EINVAL);
+ assert_return(interface_index >= -1, -EINVAL);
+
+ client->index = interface_index;
+
+ return 0;
+}
+
+int sd_dhcp6_client_set_mac(sd_dhcp6_client *client,
+ const struct ether_addr *mac_addr)
+{
+ assert_return(client, -EINVAL);
+
+ if (mac_addr)
+ memcpy(&client->mac_addr, mac_addr, sizeof(client->mac_addr));
+ else
+ memset(&client->mac_addr, 0x00, sizeof(client->mac_addr));
+
+ return 0;
+}
+
+static sd_dhcp6_client *client_notify(sd_dhcp6_client *client, int event) {
+ if (client->cb) {
+ client = sd_dhcp6_client_ref(client);
+ client->cb(client, event, client->userdata);
+ client = sd_dhcp6_client_unref(client);
+ }
+
+ return client;
+}
+
+static int client_initialize(sd_dhcp6_client *client)
+{
+ assert_return(client, -EINVAL);
+
+ client->state = DHCP6_STATE_STOPPED;
+
+ return 0;
+}
+
+static sd_dhcp6_client *client_stop(sd_dhcp6_client *client, int error) {
+ assert_return(client, NULL);
+
+ client = client_notify(client, error);
+ if (client)
+ client_initialize(client);
+
+ return client;
+}
+
+int sd_dhcp6_client_stop(sd_dhcp6_client *client)
+{
+ client_stop(client, DHCP6_EVENT_STOP);
+
+ return 0;
+}
+
+int sd_dhcp6_client_start(sd_dhcp6_client *client)
+{
+ int r = 0;
+
+ assert_return(client, -EINVAL);
+ assert_return(client->event, -EINVAL);
+ assert_return(client->index > 0, -EINVAL);
+
+ return r;
+}
+
+int sd_dhcp6_client_attach_event(sd_dhcp6_client *client, sd_event *event,
+ int priority)
+{
+ int r;
+
+ assert_return(client, -EINVAL);
+ assert_return(!client->event, -EBUSY);
+
+ if (event)
+ client->event = sd_event_ref(event);
+ else {
+ r = sd_event_default(&client->event);
+ if (r < 0)
+ return 0;
+ }
+
+ client->event_priority = priority;
+
+ return 0;
+}
+
+int sd_dhcp6_client_detach_event(sd_dhcp6_client *client) {
+ assert_return(client, -EINVAL);
+
+ client->event = sd_event_unref(client->event);
+
+ return 0;
+}
+
+sd_event *sd_dhcp6_client_get_event(sd_dhcp6_client *client) {
+ if (!client)
+ return NULL;
+
+ return client->event;
+}
+
+sd_dhcp6_client *sd_dhcp6_client_ref(sd_dhcp6_client *client) {
+ if (client)
+ assert_se(REFCNT_INC(client->n_ref) >= 2);
+
+ return client;
+}
+
+sd_dhcp6_client *sd_dhcp6_client_unref(sd_dhcp6_client *client) {
+ if (client && REFCNT_DEC(client->n_ref) <= 0) {
+
+ client_initialize(client);
+
+ sd_dhcp6_client_detach_event(client);
+
+ free(client);
+
+ return NULL;
+ }
+
+ return client;
+}
+
+DEFINE_TRIVIAL_CLEANUP_FUNC(sd_dhcp6_client*, sd_dhcp6_client_unref);
+#define _cleanup_dhcp6_client_free_ _cleanup_(sd_dhcp6_client_unrefp)
+
+int sd_dhcp6_client_new(sd_dhcp6_client **ret)
+{
+ _cleanup_dhcp6_client_free_ sd_dhcp6_client *client = NULL;
+
+ assert_return(ret, -EINVAL);
+
+ client = new0(sd_dhcp6_client, 1);
+ if (!client)
+ return -ENOMEM;
+
+ client->n_ref = REFCNT_INIT;
+
+ client->index = -1;
+
+ *ret = client;
+ client = NULL;
+
+ return 0;
+}
diff --git a/src/systemd/sd-dhcp6-client.h b/src/systemd/sd-dhcp6-client.h
new file mode 100644
index 0000000..4965011
--- /dev/null
+++ b/src/systemd/sd-dhcp6-client.h
@@ -0,0 +1,54 @@
+/*-*- Mode: C; c-basic-offset: 8; indent-tabs-mode: nil -*-*/
+
+#ifndef foosddhcp6clienthfoo
+#define foosddhcp6clienthfoo
+
+/***
+ This file is part of systemd.
+
+ Copyright (C) 2014 Intel Corporation. All rights reserved.
+
+ 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/ethernet.h>
+
+#include "sd-event.h"
+
+enum {
+ DHCP6_EVENT_STOP = 0,
+};
+
+typedef struct sd_dhcp6_client sd_dhcp6_client;
+
+typedef void (*sd_dhcp6_client_cb_t)(sd_dhcp6_client *client, int event,
+ void *userdata);
+int sd_dhcp6_client_set_callback(sd_dhcp6_client *client,
+ sd_dhcp6_client_cb_t cb, void *userdata);
+
+int sd_dhcp6_client_set_index(sd_dhcp6_client *client, int interface_index);
+int sd_dhcp6_client_set_mac(sd_dhcp6_client *client,
+ const struct ether_addr *mac_addr);
+
+int sd_dhcp6_client_stop(sd_dhcp6_client *client);
+int sd_dhcp6_client_start(sd_dhcp6_client *client);
+int sd_dhcp6_client_attach_event(sd_dhcp6_client *client, sd_event *event,
+ int priority);
+int sd_dhcp6_client_detach_event(sd_dhcp6_client *client);
+sd_event *sd_dhcp6_client_get_event(sd_dhcp6_client *client);
+sd_dhcp6_client *sd_dhcp6_client_ref(sd_dhcp6_client *client);
+sd_dhcp6_client *sd_dhcp6_client_unref(sd_dhcp6_client *client);
+int sd_dhcp6_client_new(sd_dhcp6_client **ret);
+
+#endif
--
1.9.1
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