*
* Connection Manager
*
- * Copyright (C) 2007 Intel Corporation. All rights reserved.
+ * Copyright (C) 2007-2009 Intel Corporation. All rights reserved.
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License version 2 as
#include <config.h>
#endif
-#include <stdio.h>
#include <unistd.h>
#include <string.h>
#include <sys/socket.h>
#include "connman.h"
+struct watch_data {
+ unsigned int id;
+ int index;
+ connman_rtnl_link_cb_t newlink;
+ void *user_data;
+};
+
+static GSList *watch_list = NULL;
+static unsigned int watch_id = 0;
+
+/**
+ * connman_rtnl_add_newlink_watch:
+ * @index: network device index
+ * @callback: callback function
+ * @user_data: callback data;
+ *
+ * Add a new RTNL watch for newlink events
+ *
+ * Returns: %0 on failure and a unique id on success
+ */
+unsigned int connman_rtnl_add_newlink_watch(int index,
+ connman_rtnl_link_cb_t callback, void *user_data)
+{
+ struct watch_data *watch;
+
+ watch = g_try_new0(struct watch_data, 1);
+ if (watch == NULL)
+ return 0;
+
+ watch->id = ++watch_id;
+ watch->index = index;
+
+ watch->newlink = callback;
+ watch->user_data = user_data;
+
+ watch_list = g_slist_prepend(watch_list, watch);
+
+ DBG("id %d", watch->id);
+
+ return watch->id;
+}
+
+/**
+ * connman_rtnl_remove_watch:
+ * @id: watch identifier
+ *
+ * Remove the RTNL watch for the identifier
+ */
+void connman_rtnl_remove_watch(unsigned int id)
+{
+ GSList *list;
+
+ DBG("id %d", id);
+
+ if (id == 0)
+ return;
+
+ for (list = watch_list; list; list = list->next) {
+ struct watch_data *watch = list->data;
+
+ if (watch->id == id) {
+ watch_list = g_slist_remove(watch_list, watch);
+ g_free(watch);
+ break;
+ }
+ }
+}
+
+static GSList *rtnl_list = NULL;
+
+static gint compare_priority(gconstpointer a, gconstpointer b)
+{
+ const struct connman_rtnl *rtnl1 = a;
+ const struct connman_rtnl *rtnl2 = b;
+
+ return rtnl2->priority - rtnl1->priority;
+}
+
+/**
+ * connman_rtnl_register:
+ * @rtnl: RTNL module
+ *
+ * Register a new RTNL module
+ *
+ * Returns: %0 on success
+ */
+int connman_rtnl_register(struct connman_rtnl *rtnl)
+{
+ DBG("rtnl %p name %s", rtnl, rtnl->name);
+
+ rtnl_list = g_slist_insert_sorted(rtnl_list, rtnl,
+ compare_priority);
+
+ return 0;
+}
+
+/**
+ * connman_rtnl_unregister:
+ * @rtnl: RTNL module
+ *
+ * Remove a previously registered RTNL module
+ */
+void connman_rtnl_unregister(struct connman_rtnl *rtnl)
+{
+ DBG("rtnl %p name %s", rtnl, rtnl->name);
+
+ rtnl_list = g_slist_remove(rtnl_list, rtnl);
+}
+
+static void process_newlink(unsigned short type, int index,
+ unsigned flags, unsigned change)
+{
+ GSList *list;
+
+ for (list = rtnl_list; list; list = list->next) {
+ struct connman_rtnl *rtnl = list->data;
+
+ if (rtnl->newlink)
+ rtnl->newlink(type, index, flags, change);
+ }
+
+ for (list = watch_list; list; list = list->next) {
+ struct watch_data *watch = list->data;
+
+ if (watch->index != index)
+ continue;
+
+ if (watch->newlink)
+ watch->newlink(flags, change, watch->user_data);
+ }
+}
+
+static void process_dellink(unsigned short type, int index,
+ unsigned flags, unsigned change)
+{
+ GSList *list;
+
+ for (list = rtnl_list; list; list = list->next) {
+ struct connman_rtnl *rtnl = list->data;
+
+ if (rtnl->dellink)
+ rtnl->dellink(type, index, flags, change);
+ }
+}
+
+static char *extract_gateway(struct rtmsg *msg, int bytes, int *index)
+{
+ char *gateway = NULL;
+ struct in_addr addr;
+ struct rtattr *attr;
+
+ for (attr = RTM_RTA(msg); RTA_OK(attr, bytes);
+ attr = RTA_NEXT(attr, bytes)) {
+ switch (attr->rta_type) {
+ case RTA_GATEWAY:
+ addr = *((struct in_addr *) RTA_DATA(attr));
+ g_free(gateway);
+ gateway = g_strdup(inet_ntoa(addr));
+ break;
+ case RTA_OIF:
+ *index = *((int *) RTA_DATA(attr));
+ break;
+ }
+ }
+
+ return gateway;
+}
+
+static void process_newgateway(struct rtmsg *msg, int bytes)
+{
+ int index = -1;
+ char *gateway;
+ GSList *list;
+
+ gateway = extract_gateway(msg, bytes, &index);
+ if (gateway == NULL || index < 0)
+ return;
+
+ for (list = rtnl_list; list; list = list->next) {
+ struct connman_rtnl *rtnl = list->data;
+
+ if (rtnl->newgateway)
+ rtnl->newgateway(index, gateway);
+ }
+
+ g_free(gateway);
+}
+
+static void process_delgateway(struct rtmsg *msg, int bytes)
+{
+ int index = -1;
+ char *gateway;
+ GSList *list;
+
+ gateway = extract_gateway(msg, bytes, &index);
+ if (gateway == NULL || index < 0)
+ return;
+
+ for (list = rtnl_list; list; list = list->next) {
+ struct connman_rtnl *rtnl = list->data;
+
+ if (rtnl->delgateway)
+ rtnl->delgateway(index, gateway);
+ }
+
+ g_free(gateway);
+}
+
+static inline void print_inet(struct rtattr *attr, const char *name, int family)
+{
+ if (family == AF_INET) {
+ struct in_addr addr;
+ addr = *((struct in_addr *) RTA_DATA(attr));
+ DBG(" attr %s (len %d) %s\n", name,
+ (int) RTA_PAYLOAD(attr), inet_ntoa(addr));
+ } else
+ DBG(" attr %s (len %d)\n", name, (int) RTA_PAYLOAD(attr));
+}
+
static inline void print_char(struct rtattr *attr, const char *name)
{
- printf(" attr %s (len %d) %s\n", name, RTA_PAYLOAD(attr),
+ DBG(" attr %s (len %d) %s\n", name, (int) RTA_PAYLOAD(attr),
(char *) RTA_DATA(attr));
}
+static inline void print_byte(struct rtattr *attr, const char *name)
+{
+ DBG(" attr %s (len %d) 0x%02x\n", name, (int) RTA_PAYLOAD(attr),
+ *((unsigned char *) RTA_DATA(attr)));
+}
+
static inline void print_attr(struct rtattr *attr, const char *name)
{
if (name)
- printf(" attr %s (len %d)\n", name, RTA_PAYLOAD(attr));
+ DBG(" attr %s (len %d)\n", name, (int) RTA_PAYLOAD(attr));
else
- printf(" attr %d (len %d)\n",
- attr->rta_type, RTA_PAYLOAD(attr));
+ DBG(" attr %d (len %d)\n",
+ attr->rta_type, (int) RTA_PAYLOAD(attr));
}
static void rtnl_link(struct nlmsghdr *hdr)
{
- struct connman_iface *iface;
+#if 0
struct ifinfomsg *msg;
struct rtattr *attr;
int bytes;
DBG("ifi_index %d ifi_flags 0x%04x", msg->ifi_index, msg->ifi_flags);
- iface = __connman_iface_find(msg->ifi_index);
- if (iface == NULL)
- return;
-
- if ((iface->flags & CONNMAN_IFACE_FLAG_RTNL) == 0)
- return;
-
- if (iface->carrier != (msg->ifi_flags & IFF_RUNNING)) {
- iface->carrier = (msg->ifi_flags & IFF_RUNNING);
- DBG("carrier %s", iface->carrier ? "on" : "off");
- }
-
for (attr = IFLA_RTA(msg); RTA_OK(attr, bytes);
attr = RTA_NEXT(attr, bytes)) {
switch (attr->rta_type) {
print_attr(attr, "master");
break;
case IFLA_WIRELESS:
- if (iface->driver->rtnl_wireless)
- iface->driver->rtnl_wireless(iface,
- RTA_DATA(attr), RTA_PAYLOAD(attr));
+ print_attr(attr, "wireless");
break;
case IFLA_PROTINFO:
print_attr(attr, "protinfo");
print_attr(attr, "weight");
break;
case IFLA_OPERSTATE:
- print_attr(attr, "operstate");
+ print_byte(attr, "operstate");
break;
case IFLA_LINKMODE:
- print_attr(attr, "linkmode");
+ print_byte(attr, "linkmode");
break;
default:
print_attr(attr, NULL);
break;
}
}
+#endif
+}
+
+static void rtnl_newlink(struct nlmsghdr *hdr)
+{
+ struct ifinfomsg *msg;
+
+ msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
+
+ DBG("ifi_type %d ifi_index %d ifi_flags 0x%04x ifi_change 0x%04x",
+ msg->ifi_type, msg->ifi_index,
+ msg->ifi_flags, msg->ifi_change);
+
+ process_newlink(msg->ifi_type, msg->ifi_index,
+ msg->ifi_flags, msg->ifi_change);
+
+ rtnl_link(hdr);
+}
+
+static void rtnl_dellink(struct nlmsghdr *hdr)
+{
+ struct ifinfomsg *msg;
+
+ msg = (struct ifinfomsg *) NLMSG_DATA(hdr);
+
+ DBG("ifi_type %d ifi_index %d ifi_flags 0x%04x ifi_change 0x%04x",
+ msg->ifi_type, msg->ifi_index,
+ msg->ifi_flags, msg->ifi_change);
+
+ process_dellink(msg->ifi_type, msg->ifi_index,
+ msg->ifi_flags, msg->ifi_change);
+
+ rtnl_link(hdr);
}
static void rtnl_addr(struct nlmsghdr *hdr)
{
- struct connman_iface *iface;
struct ifaddrmsg *msg;
struct rtattr *attr;
int bytes;
DBG("ifa_family %d ifa_index %d", msg->ifa_family, msg->ifa_index);
- iface = __connman_iface_find(msg->ifa_index);
- if (iface == NULL)
- return;
-
- if ((iface->flags & CONNMAN_IFACE_FLAG_RTNL) == 0)
- return;
-
for (attr = IFA_RTA(msg); RTA_OK(attr, bytes);
attr = RTA_NEXT(attr, bytes)) {
switch (attr->rta_type) {
case IFA_ADDRESS:
- print_attr(attr, "address");
- if (msg->ifa_family == AF_INET) {
- struct in_addr addr;
- addr = *((struct in_addr *) RTA_DATA(attr));
- DBG(" address %s", inet_ntoa(addr));
- }
+ print_inet(attr, "address", msg->ifa_family);
break;
case IFA_LOCAL:
- print_attr(attr, "local");
- if (msg->ifa_family == AF_INET) {
- struct in_addr addr;
- addr = *((struct in_addr *) RTA_DATA(attr));
- DBG(" address %s", inet_ntoa(addr));
- }
+ print_inet(attr, "local", msg->ifa_family);
break;
case IFA_LABEL:
print_char(attr, "label");
break;
case IFA_BROADCAST:
- print_attr(attr, "broadcast");
- if (msg->ifa_family == AF_INET) {
- struct in_addr addr;
- addr = *((struct in_addr *) RTA_DATA(attr));
- DBG(" address %s", inet_ntoa(addr));
- }
+ print_inet(attr, "broadcast", msg->ifa_family);
break;
case IFA_ANYCAST:
print_attr(attr, "anycast");
static void rtnl_route(struct nlmsghdr *hdr)
{
+#if 0
struct rtmsg *msg;
struct rtattr *attr;
int bytes;
attr = RTA_NEXT(attr, bytes)) {
switch (attr->rta_type) {
case RTA_DST:
- print_attr(attr, "dst");
- if (msg->rtm_family == AF_INET) {
- struct in_addr addr;
- addr = *((struct in_addr *) RTA_DATA(attr));
- DBG(" address %s", inet_ntoa(addr));
- }
+ print_inet(attr, "dst", msg->rtm_family);
break;
case RTA_SRC:
- print_attr(attr, "src");
- if (msg->rtm_family == AF_INET) {
- struct in_addr addr;
- addr = *((struct in_addr *) RTA_DATA(attr));
- DBG(" address %s", inet_ntoa(addr));
- }
+ print_inet(attr, "src", msg->rtm_family);
break;
case RTA_IIF:
print_char(attr, "iif");
print_attr(attr, "oif");
break;
case RTA_GATEWAY:
- print_attr(attr, "gateway");
- if (msg->rtm_family == AF_INET) {
- struct in_addr addr;
- addr = *((struct in_addr *) RTA_DATA(attr));
- DBG(" address %s", inet_ntoa(addr));
- }
+ print_inet(attr, "gateway", msg->rtm_family);
break;
case RTA_PRIORITY:
print_attr(attr, "priority");
break;
case RTA_PREFSRC:
- print_attr(attr, "prefsrc");
- if (msg->rtm_family == AF_INET) {
- struct in_addr addr;
- addr = *((struct in_addr *) RTA_DATA(attr));
- DBG(" address %s", inet_ntoa(addr));
- }
+ print_inet(attr, "prefsrc", msg->rtm_family);
break;
case RTA_METRICS:
print_attr(attr, "metrics");
break;
}
}
+#endif
}
-static void rtnl_message(unsigned char *buf, size_t size)
+static void rtnl_newroute(struct nlmsghdr *hdr)
{
- struct nlmsghdr *hdr = (void *) buf;
+ struct rtmsg *msg;
- if (!NLMSG_OK(hdr, size))
- return;
+ msg = (struct rtmsg *) NLMSG_DATA(hdr);
- switch (hdr->nlmsg_type) {
- case NLMSG_DONE:
- DBG("done");
- return;
+ if (msg->rtm_type == RTN_UNICAST && msg->rtm_table == RT_TABLE_MAIN &&
+ msg->rtm_scope == RT_SCOPE_UNIVERSE) {
+ DBG("rtm_table %d rtm_scope %d rtm_type %d rtm_flags 0x%04x",
+ msg->rtm_table, msg->rtm_scope,
+ msg->rtm_type, msg->rtm_flags);
+ process_newgateway(msg, RTM_PAYLOAD(hdr));
+ }
+
+ rtnl_route(hdr);
+}
+
+static void rtnl_delroute(struct nlmsghdr *hdr)
+{
+ struct rtmsg *msg;
+
+ msg = (struct rtmsg *) NLMSG_DATA(hdr);
+
+ if (msg->rtm_type == RTN_UNICAST && msg->rtm_table == RT_TABLE_MAIN &&
+ msg->rtm_scope == RT_SCOPE_UNIVERSE) {
+ DBG("rtm_table %d rtm_scope %d rtm_type %d rtm_flags 0x%04x",
+ msg->rtm_table, msg->rtm_scope,
+ msg->rtm_type, msg->rtm_flags);
+ process_delgateway(msg, RTM_PAYLOAD(hdr));
+ }
+
+ rtnl_route(hdr);
+}
+
+static const char *type2string(uint16_t type)
+{
+ switch (type) {
case NLMSG_NOOP:
- DBG("noop");
- return;
- case NLMSG_OVERRUN:
- DBG("overrun");
- return;
+ return "NOOP";
case NLMSG_ERROR:
- DBG("error");
- return;
+ return "ERROR";
+ case NLMSG_DONE:
+ return "DONE";
+ case NLMSG_OVERRUN:
+ return "OVERRUN";
+ case RTM_GETLINK:
+ return "GETLINK";
case RTM_NEWLINK:
- rtnl_link(hdr);
- break;
+ return "NEWLINK";
case RTM_DELLINK:
- rtnl_link(hdr);
- break;
+ return "DELLINK";
case RTM_NEWADDR:
- rtnl_addr(hdr);
- break;
+ return "NEWADDR";
case RTM_DELADDR:
- rtnl_addr(hdr);
- break;
+ return "DELADDR";
+ case RTM_GETROUTE:
+ return "GETROUTE";
case RTM_NEWROUTE:
- rtnl_route(hdr);
- break;
+ return "NEWROUTE";
case RTM_DELROUTE:
- rtnl_route(hdr);
- break;
+ return "DELROUTE";
default:
- DBG("type %d", hdr->nlmsg_type);
- break;
+ return "UNKNOWN";
+ }
+}
+
+static GIOChannel *channel = NULL;
+
+struct rtnl_request {
+ struct nlmsghdr hdr;
+ struct rtgenmsg msg;
+};
+#define RTNL_REQUEST_SIZE (sizeof(struct nlmsghdr) + sizeof(struct rtgenmsg))
+
+static GSList *request_list = NULL;
+static guint32 request_seq = 0;
+
+static struct rtnl_request *find_request(guint32 seq)
+{
+ GSList *list;
+
+ for (list = request_list; list; list = list->next) {
+ struct rtnl_request *req = list->data;
+
+ if (req->hdr.nlmsg_seq == seq)
+ return req;
+ }
+
+ return NULL;
+}
+
+static int send_request(struct rtnl_request *req)
+{
+ struct sockaddr_nl addr;
+ int sk;
+
+ DBG("%s len %d type %d flags 0x%04x seq %d",
+ type2string(req->hdr.nlmsg_type),
+ req->hdr.nlmsg_len, req->hdr.nlmsg_type,
+ req->hdr.nlmsg_flags, req->hdr.nlmsg_seq);
+
+ sk = g_io_channel_unix_get_fd(channel);
+
+ memset(&addr, 0, sizeof(addr));
+ addr.nl_family = AF_NETLINK;
+
+ return sendto(sk, req, req->hdr.nlmsg_len, 0,
+ (struct sockaddr *) &addr, sizeof(addr));
+}
+
+static int queue_request(struct rtnl_request *req)
+{
+ request_list = g_slist_append(request_list, req);
+
+ if (g_slist_length(request_list) > 1)
+ return 0;
+
+ return send_request(req);
+}
+
+static int process_response(guint32 seq)
+{
+ struct rtnl_request *req;
+
+ DBG("seq %d", seq);
+
+ req = find_request(seq);
+ if (req != NULL) {
+ request_list = g_slist_remove(request_list, req);
+ g_free(req);
+ }
+
+ req = g_slist_nth_data(request_list, 0);
+ if (req == NULL)
+ return 0;
+
+ return send_request(req);
+}
+
+static void rtnl_message(void *buf, size_t len)
+{
+ DBG("buf %p len %zd", buf, len);
+
+ while (len > 0) {
+ struct nlmsghdr *hdr = buf;
+ struct nlmsgerr *err;
+
+ if (!NLMSG_OK(hdr, len))
+ break;
+
+ DBG("%s len %d type %d flags 0x%04x seq %d",
+ type2string(hdr->nlmsg_type),
+ hdr->nlmsg_len, hdr->nlmsg_type,
+ hdr->nlmsg_flags, hdr->nlmsg_seq);
+
+ switch (hdr->nlmsg_type) {
+ case NLMSG_NOOP:
+ case NLMSG_OVERRUN:
+ return;
+ case NLMSG_DONE:
+ process_response(hdr->nlmsg_seq);
+ return;
+ case NLMSG_ERROR:
+ err = NLMSG_DATA(hdr);
+ DBG("error %d (%s)", -err->error,
+ strerror(-err->error));
+ return;
+ case RTM_NEWLINK:
+ rtnl_newlink(hdr);
+ break;
+ case RTM_DELLINK:
+ rtnl_dellink(hdr);
+ break;
+ case RTM_NEWADDR:
+ case RTM_DELADDR:
+ rtnl_addr(hdr);
+ break;
+ case RTM_NEWROUTE:
+ rtnl_newroute(hdr);
+ break;
+ case RTM_DELROUTE:
+ rtnl_delroute(hdr);
+ break;
+ }
+
+ len -= hdr->nlmsg_len;
+ buf += hdr->nlmsg_len;
}
}
static gboolean netlink_event(GIOChannel *chan,
GIOCondition cond, gpointer data)
{
- unsigned char buf[256];
+ unsigned char buf[4096];
gsize len;
GIOError err;
- if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR)) {
- g_io_channel_unref(chan);
+ if (cond & (G_IO_NVAL | G_IO_HUP | G_IO_ERR))
return FALSE;
- }
memset(buf, 0, sizeof(buf));
if (err) {
if (err == G_IO_ERROR_AGAIN)
return TRUE;
- g_io_channel_unref(chan);
return FALSE;
}
return TRUE;
}
-static GIOChannel *channel = NULL;
+int connman_rtnl_send_getlink(void)
+{
+ struct rtnl_request *req;
+
+ DBG("");
+
+ req = g_try_malloc0(RTNL_REQUEST_SIZE);
+ if (req == NULL)
+ return -ENOMEM;
+
+ req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
+ req->hdr.nlmsg_type = RTM_GETLINK;
+ req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+ req->hdr.nlmsg_pid = 0;
+ req->hdr.nlmsg_seq = request_seq++;
+ req->msg.rtgen_family = AF_INET;
+
+ return queue_request(req);
+}
+
+int connman_rtnl_send_getroute(void)
+{
+ struct rtnl_request *req;
+
+ DBG("");
+
+ req = g_try_malloc0(RTNL_REQUEST_SIZE);
+ if (req == NULL)
+ return -ENOMEM;
+
+ req->hdr.nlmsg_len = RTNL_REQUEST_SIZE;
+ req->hdr.nlmsg_type = RTM_GETROUTE;
+ req->hdr.nlmsg_flags = NLM_F_REQUEST | NLM_F_DUMP;
+ req->hdr.nlmsg_pid = 0;
+ req->hdr.nlmsg_seq = request_seq++;
+ req->msg.rtgen_family = AF_INET;
+
+ return queue_request(req);
+}
int __connman_rtnl_init(void)
{
memset(&addr, 0, sizeof(addr));
addr.nl_family = AF_NETLINK;
- addr.nl_groups = RTMGRP_LINK;
+ addr.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_ROUTE;
+ //addr.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR;
//addr.nl_groups = RTMGRP_LINK | RTMGRP_IPV4_IFADDR | RTMGRP_IPV4_ROUTE;
- addr.nl_pid = getpid();
if (bind(sk, (struct sockaddr *) &addr, sizeof(addr)) < 0) {
close(sk);
channel = g_io_channel_unix_new(sk);
g_io_channel_set_close_on_unref(channel, TRUE);
- g_io_add_watch(channel,
- G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
- netlink_event, NULL);
-
- g_io_channel_unref(channel);
+ g_io_add_watch(channel, G_IO_IN | G_IO_NVAL | G_IO_HUP | G_IO_ERR,
+ netlink_event, NULL);
return 0;
}
void __connman_rtnl_cleanup(void)
{
+ GSList *list;
+
DBG("");
+ for (list = watch_list; list; list = list->next) {
+ struct watch_data *watch = list->data;
+
+ DBG("removing watch %d", watch->id);
+
+ g_free(watch);
+ list->data = NULL;
+ }
+
+ g_slist_free(watch_list);
+ watch_list = NULL;
+
+ for (list = request_list; list; list = list->next) {
+ struct rtnl_request *req = list->data;
+
+ DBG("%s len %d type %d flags 0x%04x seq %d",
+ type2string(req->hdr.nlmsg_type),
+ req->hdr.nlmsg_len, req->hdr.nlmsg_type,
+ req->hdr.nlmsg_flags, req->hdr.nlmsg_seq);
+
+ g_free(req);
+ list->data = NULL;
+ }
+
+ g_slist_free(request_list);
+ request_list = NULL;
+
+ g_io_channel_shutdown(channel, TRUE, NULL);
g_io_channel_unref(channel);
channel = NULL;
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