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NetworkManager/src/nm-system.c
Dan Williams 1472532f28 core: clarify bond enslave/release function names
2012-11-30 13:21:51 -06:00

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/* -*- Mode: C; tab-width: 4; indent-tabs-mode: t; c-basic-offset: 4 -*- */
/* NetworkManager -- Network link manager
*
* This program is free software; you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation; either version 2 of the License, or
* (at your option) any later version.
*
* This program 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 General Public License for more details.
*
* You should have received a copy of the GNU General Public License along
* with this program; if not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*
* Copyright (C) 2004 - 2012 Red Hat, Inc.
* Copyright (C) 2005 - 2008 Novell, Inc.
* Copyright (C) 1996 - 1997 Yoichi Hariguchi <yoichi@fore.com>
* Copyright (C) January, 1998 Sergei Viznyuk <sv@phystech.com>
*/
#include <config.h>
#include <sys/types.h>
#include <sys/socket.h>
#include <sys/ioctl.h>
#include <sys/stat.h>
#include <netinet/in.h>
#include <net/route.h>
#include <arpa/nameser.h>
#include <arpa/inet.h>
#include <fcntl.h>
#include <stdio.h>
#include <string.h>
#include <syslog.h>
#include <errno.h>
#include <stdlib.h>
#include <unistd.h>
#include <resolv.h>
#include <netdb.h>
#include <glib.h>
#include <linux/if.h>
#include <linux/sockios.h>
#include <linux/if_bonding.h>
#include <linux/if_vlan.h>
#include <linux/if_bridge.h>
#include "nm-system.h"
#include "nm-device.h"
#include "NetworkManagerUtils.h"
#include "nm-utils.h"
#include "nm-logging.h"
#include "nm-netlink-monitor.h"
#include "nm-netlink-utils.h"
#include "nm-netlink-compat.h"
#include <netlink/route/addr.h>
#include <netlink/route/route.h>
#include <netlink/netlink.h>
#include <netlink/utils.h>
#include <netlink/route/link.h>
#if HAVE_LIBNL == 3
#include <netlink/route/link/bonding.h>
#include <netlink/route/link/vlan.h>
#endif
#if !HAVE_VLAN_FLAG_LOOSE_BINDING
/* Older kernels don't have this flag */
#define VLAN_FLAG_LOOSE_BINDING 0x04
#endif
static void nm_system_device_set_priority (int ifindex,
NMIP4Config *config,
int priority);
static gboolean
ip4_dest_in_same_subnet (NMIP4Config *config, guint32 dest, guint32 dest_prefix)
{
int num;
int i;
num = nm_ip4_config_get_num_addresses (config);
for (i = 0; i < num; i++) {
NMIP4Address *addr = nm_ip4_config_get_address (config, i);
guint32 prefix = nm_ip4_address_get_prefix (addr);
guint32 address = nm_ip4_address_get_address (addr);
if (prefix <= dest_prefix) {
guint32 masked_addr = ntohl(address) >> (32 - prefix);
guint32 masked_dest = ntohl(dest) >> (32 - prefix);
if (masked_addr == masked_dest)
return TRUE;
}
}
return FALSE;
}
static struct rtnl_route *
nm_system_device_set_ip4_route (int ifindex,
guint32 ip4_dest,
guint32 ip4_prefix,
guint32 ip4_gateway,
guint32 metric,
int mss)
{
struct nl_sock *nlh;
struct rtnl_route *route;
int err;
g_return_val_if_fail (ifindex > 0, NULL);
nlh = nm_netlink_get_default_handle ();
g_return_val_if_fail (nlh != NULL, NULL);
route = nm_netlink_route_new (ifindex, AF_INET, mss,
NMNL_PROP_PRIO, metric,
NULL);
g_return_val_if_fail (route != NULL, NULL);
/* Add the route */
err = nm_netlink_route4_add (route, &ip4_dest, ip4_prefix, &ip4_gateway, 0);
if (err == -NLE_OBJ_NOTFOUND && ip4_gateway) {
/* Gateway might be over a bridge; try adding a route to gateway first */
struct rtnl_route *route2;
route2 = nm_netlink_route_new (ifindex, AF_INET, mss, NULL);
if (route2) {
/* Add route to gateway over bridge */
err = nm_netlink_route4_add (route2, &ip4_gateway, 32, NULL, 0);
if (!err) {
err = nm_netlink_route4_add (route, &ip4_dest, ip4_prefix, &ip4_gateway, 0);
if (err)
nm_netlink_route_delete (route2);
}
rtnl_route_put (route2);
}
}
if (err) {
char *iface = nm_netlink_index_to_iface (ifindex);
nm_log_err (LOGD_DEVICE | LOGD_IP4,
"(%s): failed to set IPv4 route: %s",
iface ? iface : "unknown", nl_geterror (err));
g_free (iface);
rtnl_route_put (route);
route = NULL;
}
return route;
}
static gboolean
sync_addresses (int ifindex,
int family,
struct rtnl_addr **addrs,
int num_addrs)
{
struct nl_sock *nlh;
struct nl_cache *addr_cache = NULL;
struct rtnl_addr *filter_addr = NULL, *match_addr;
struct nl_object *match;
struct nl_addr *nladdr;
int i, err;
guint32 log_domain = (family == AF_INET) ? LOGD_IP4 : LOGD_IP6;
char buf[INET6_ADDRSTRLEN + 1];
char *iface = NULL;
gboolean success = FALSE;
log_domain |= LOGD_DEVICE;
nlh = nm_netlink_get_default_handle ();
if (!nlh)
return FALSE;
err = rtnl_addr_alloc_cache (nlh, &addr_cache);
if (err < 0)
return FALSE;
filter_addr = rtnl_addr_alloc ();
if (!filter_addr)
goto out;
rtnl_addr_set_ifindex (filter_addr, ifindex);
if (family)
rtnl_addr_set_family (filter_addr, family);
iface = nm_netlink_index_to_iface (ifindex);
if (!iface)
goto out;
nm_log_dbg (log_domain, "(%s): syncing addresses (family %d)", iface, family);
/* Walk through the cache, comparing the addresses already on
* the interface to the addresses in addrs.
*/
for (match = nl_cache_get_first (addr_cache); match; match = nl_cache_get_next (match)) {
gboolean buf_valid = FALSE;
match_addr = (struct rtnl_addr *) match;
/* Skip addresses not on our interface */
if (!nl_object_match_filter (match, (struct nl_object *) filter_addr))
continue;
if (addrs) {
for (i = 0; i < num_addrs; i++) {
if (addrs[i] && nl_object_identical (match, (struct nl_object *) addrs[i]))
break;
}
if (addrs[i]) {
/* match == addrs[i], so remove it from addrs so we don't
* try to add it to the interface again below.
*/
rtnl_addr_put (addrs[i]);
addrs[i] = NULL;
continue;
}
}
nladdr = rtnl_addr_get_local (match_addr);
/* Don't delete IPv6 link-local addresses; they don't belong to NM */
if (rtnl_addr_get_family (match_addr) == AF_INET6) {
struct in6_addr *tmp;
if (rtnl_addr_get_scope (match_addr) == RT_SCOPE_LINK) {
nm_log_dbg (log_domain, "(%s): ignoring IPv6 link-local address", iface);
continue;
}
tmp = nl_addr_get_binary_addr (nladdr);
if (inet_ntop (AF_INET6, tmp, buf, sizeof (buf)))
buf_valid = TRUE;
} else if (rtnl_addr_get_family (match_addr) == AF_INET) {
struct in_addr *tmp;
tmp = nl_addr_get_binary_addr (nladdr);
if (inet_ntop (AF_INET, tmp, buf, sizeof (buf)))
buf_valid = TRUE;
}
if (buf_valid) {
nm_log_dbg (log_domain, "(%s): removing address '%s/%d'",
iface, buf, rtnl_addr_get_prefixlen (match_addr));
}
/* Otherwise, match_addr should be removed from the interface. */
err = rtnl_addr_delete (nlh, match_addr, 0);
if (err < 0) {
nm_log_err (log_domain, "(%s): error %d returned from rtnl_addr_delete(): %s",
iface, err, nl_geterror (err));
}
}
/* Now add the remaining new addresses */
for (i = 0; i < num_addrs; i++) {
struct in6_addr *in6tmp;
struct in_addr *in4tmp;
gboolean buf_valid = FALSE;
if (!addrs[i])
continue;
nladdr = rtnl_addr_get_local (addrs[i]);
if (rtnl_addr_get_family (addrs[i]) == AF_INET6) {
in6tmp = nl_addr_get_binary_addr (nladdr);
if (inet_ntop (AF_INET6, in6tmp, buf, sizeof (buf)))
buf_valid = TRUE;
} else if (rtnl_addr_get_family (addrs[i]) == AF_INET) {
in4tmp = nl_addr_get_binary_addr (nladdr);
if (inet_ntop (AF_INET, in4tmp, buf, sizeof (buf)))
buf_valid = TRUE;
}
if (buf_valid) {
nm_log_dbg (log_domain, "(%s): adding address '%s/%d'",
iface, buf, nl_addr_get_prefixlen (nladdr));
}
err = rtnl_addr_add (nlh, addrs[i], 0);
if (err < 0 && (err != -NLE_EXIST)) {
nm_log_err (log_domain,
"(%s): error %d returned from rtnl_addr_add():\n%s",
iface, err, nl_geterror (err));
}
rtnl_addr_put (addrs[i]);
}
g_free (addrs);
success = TRUE;
out:
if (filter_addr)
rtnl_addr_put (filter_addr);
if (addr_cache)
nl_cache_free (addr_cache);
g_free (iface);
return success;
}
static gboolean
add_ip4_addresses (NMIP4Config *config, int ifindex)
{
char *iface;
int num_addrs, i;
guint32 flags = 0;
gboolean did_gw = FALSE;
struct rtnl_addr **addrs;
g_return_val_if_fail (ifindex > 0, FALSE);
iface = nm_netlink_index_to_iface (ifindex);
if (!iface)
return FALSE;
num_addrs = nm_ip4_config_get_num_addresses (config);
addrs = g_new0 (struct rtnl_addr *, num_addrs + 1);
for (i = 0; i < num_addrs; i++) {
NMIP4Address *addr;
addr = nm_ip4_config_get_address (config, i);
g_assert (addr);
flags = NM_RTNL_ADDR_DEFAULT;
if (nm_ip4_address_get_gateway (addr) && !did_gw) {
if (nm_ip4_config_get_ptp_address (config))
flags |= NM_RTNL_ADDR_PTP_ADDR;
did_gw = TRUE;
}
addrs[i] = nm_ip4_config_to_rtnl_addr (config, i, flags);
if (!addrs[i]) {
nm_log_warn (LOGD_DEVICE | LOGD_IP4,
"(%s): couldn't create rtnl address!",
iface ? iface : "unknown");
continue;
}
rtnl_addr_set_ifindex (addrs[i], ifindex);
}
g_free (iface);
return sync_addresses (ifindex, AF_INET, addrs, num_addrs);
}
struct rtnl_route *
nm_system_add_ip4_vpn_gateway_route (NMDevice *parent_device, guint32 vpn_gw)
{
NMIP4Config *parent_config;
guint32 parent_gw = 0, parent_prefix = 0, i;
NMIP4Address *tmp;
struct rtnl_route *route = NULL;
g_return_val_if_fail (NM_IS_DEVICE (parent_device), NULL);
g_return_val_if_fail (vpn_gw != 0, NULL);
/* Set up a route to the VPN gateway's public IP address through the default
* network device if the VPN gateway is on a different subnet.
*/
parent_config = nm_device_get_ip4_config (parent_device);
g_return_val_if_fail (parent_config != NULL, NULL);
for (i = 0; i < nm_ip4_config_get_num_addresses (parent_config); i++) {
tmp = nm_ip4_config_get_address (parent_config, i);
if (nm_ip4_address_get_gateway (tmp)) {
parent_gw = nm_ip4_address_get_gateway (tmp);
parent_prefix = nm_ip4_address_get_prefix (tmp);
break;
}
}
if (!parent_gw)
return NULL;
/* If the VPN gateway is in the same subnet as one of the parent device's
* IP addresses, don't add the host route to it, but a route through the
* parent device.
*/
if (ip4_dest_in_same_subnet (parent_config, vpn_gw, parent_prefix)) {
route = nm_system_device_set_ip4_route (nm_device_get_ip_ifindex (parent_device),
vpn_gw, 32, 0, 0, nm_ip4_config_get_mss (parent_config));
} else {
route = nm_system_device_set_ip4_route (nm_device_get_ip_ifindex (parent_device),
vpn_gw, 32, parent_gw, 0, nm_ip4_config_get_mss (parent_config));
}
return route;
}
/*
* nm_system_apply_ip4_config
*
* Set IPv4 configuration of the device from an NMIP4Config object.
*
*/
gboolean
nm_system_apply_ip4_config (int ifindex,
NMIP4Config *config,
int priority,
NMIP4ConfigCompareFlags flags)
{
int i;
g_return_val_if_fail (ifindex > 0, FALSE);
g_return_val_if_fail (config != NULL, FALSE);
if (flags & NM_IP4_COMPARE_FLAG_ADDRESSES) {
if (!add_ip4_addresses (config, ifindex))
return FALSE;
sleep (1);
}
if (flags & NM_IP4_COMPARE_FLAG_ROUTES) {
for (i = 0; i < nm_ip4_config_get_num_routes (config); i++) {
NMIP4Route *route = nm_ip4_config_get_route (config, i);
struct rtnl_route *tmp;
/* Don't add the route if it's more specific than one of the subnets
* the device already has an IP address on.
*/
if (ip4_dest_in_same_subnet (config,
nm_ip4_route_get_dest (route),
nm_ip4_route_get_prefix (route)))
continue;
/* Don't add the route if it doesn't have a gateway and the connection
* is never supposed to be the default connection.
*/
if ( nm_ip4_config_get_never_default (config)
&& nm_ip4_route_get_dest (route) == 0)
continue;
tmp = nm_system_device_set_ip4_route (ifindex,
nm_ip4_route_get_dest (route),
nm_ip4_route_get_prefix (route),
nm_ip4_route_get_next_hop (route),
nm_ip4_route_get_metric (route),
nm_ip4_config_get_mss (config));
rtnl_route_put (tmp);
}
}
if (flags & NM_IP4_COMPARE_FLAG_MTU) {
if (nm_ip4_config_get_mtu (config))
nm_system_iface_set_mtu (ifindex, nm_ip4_config_get_mtu (config));
}
if (priority > 0)
nm_system_device_set_priority (ifindex, config, priority);
return TRUE;
}
int
nm_system_set_ip6_route (int ifindex,
const struct in6_addr *ip6_dest,
guint32 ip6_prefix,
const struct in6_addr *ip6_gateway,
guint32 metric,
int mss,
int protocol,
int table,
struct rtnl_route **out_route)
{
struct nl_sock *nlh;
struct rtnl_route *route;
int err = 0;
g_return_val_if_fail (ifindex > 0, -1);
nlh = nm_netlink_get_default_handle ();
g_return_val_if_fail (nlh != NULL, -1);
route = nm_netlink_route_new (ifindex, AF_INET6, mss,
NMNL_PROP_PROT, protocol,
NMNL_PROP_PRIO, metric,
NMNL_PROP_TABLE, table,
NULL);
g_return_val_if_fail (route != NULL, -1);
/* Add the route */
err = nm_netlink_route6_add (route, ip6_dest, ip6_prefix, ip6_gateway, 0);
if (err == -NLE_OBJ_NOTFOUND && ip6_gateway) {
/* Gateway might be over a bridge; try adding a route to gateway first */
struct rtnl_route *route2;
route2 = nm_netlink_route_new (ifindex, AF_INET6, mss, NULL);
if (route2) {
err = nm_netlink_route6_add (route, ip6_gateway, 128, NULL, 0);
/* Add route to gateway over bridge */
if (!err) {
/* Try adding the route again */
err = nm_netlink_route6_add (route, ip6_dest, ip6_prefix, ip6_gateway, 0);
if (err)
nm_netlink_route_delete (route2);
}
rtnl_route_put (route2);
}
}
if (out_route)
*out_route = route;
else
rtnl_route_put (route);
return err;
}
static gboolean
ip6_dest_in_same_subnet (NMIP6Config *config, const struct in6_addr *dest, guint32 dest_prefix)
{
int num;
int i;
num = nm_ip6_config_get_num_addresses (config);
for (i = 0; i < num; i++) {
NMIP6Address *addr = nm_ip6_config_get_address (config, i);
guint32 prefix = nm_ip6_address_get_prefix (addr);
const struct in6_addr *address = nm_ip6_address_get_address (addr);
if (prefix <= dest_prefix) {
const guint8 *maskbytes = (const guint8 *)address;
const guint8 *addrbytes = (const guint8 *)dest;
int nbytes, nbits;
/* Copied from g_inet_address_mask_matches() */
nbytes = prefix / 8;
if (nbytes != 0 && memcmp (maskbytes, addrbytes, nbytes) != 0)
continue;
nbits = prefix % 8;
if (nbits == 0)
return TRUE;
if (maskbytes[nbytes] == (addrbytes[nbytes] & (0xFF << (8 - nbits))))
return TRUE;
}
}
return FALSE;
}
struct rtnl_route *
nm_system_add_ip6_vpn_gateway_route (NMDevice *parent_device,
const struct in6_addr *vpn_gw)
{
NMIP6Config *parent_config;
const struct in6_addr *parent_gw = NULL;
guint32 parent_prefix = 0;
int i, err;
NMIP6Address *tmp;
struct rtnl_route *route = NULL;
g_return_val_if_fail (NM_IS_DEVICE (parent_device), NULL);
g_return_val_if_fail (vpn_gw != NULL, NULL);
/* This is all just the same as
* nm_system_add_ip4_vpn_gateway_route(), except with an IPv6
* address for the VPN gateway.
*/
parent_config = nm_device_get_ip6_config (parent_device);
g_return_val_if_fail (parent_config != NULL, NULL);
for (i = 0; i < nm_ip6_config_get_num_addresses (parent_config); i++) {
tmp = nm_ip6_config_get_address (parent_config, i);
if (nm_ip6_address_get_gateway (tmp)) {
parent_gw = nm_ip6_address_get_gateway (tmp);
parent_prefix = nm_ip6_address_get_prefix (tmp);
break;
}
}
if (!parent_gw)
return NULL;
if (ip6_dest_in_same_subnet (parent_config, vpn_gw, parent_prefix)) {
err = nm_system_set_ip6_route (nm_device_get_ip_ifindex (parent_device),
vpn_gw, 128, NULL, 0,
nm_ip6_config_get_mss (parent_config),
RTPROT_UNSPEC, RT_TABLE_UNSPEC,
&route);
} else {
err = nm_system_set_ip6_route (nm_device_get_ip_ifindex (parent_device),
vpn_gw, 128, parent_gw, 0,
nm_ip6_config_get_mss (parent_config),
RTPROT_UNSPEC, RT_TABLE_UNSPEC,
&route);
}
if (err) {
nm_log_err (LOGD_DEVICE | LOGD_IP6,
"(%s): failed to add IPv6 route to VPN gateway (%d)",
nm_device_get_iface (parent_device), err);
}
return route;
}
static gboolean
add_ip6_addresses (NMIP6Config *config, int ifindex)
{
char *iface;
int num_addrs, i;
struct rtnl_addr **addrs;
g_return_val_if_fail (ifindex > 0, FALSE);
iface = nm_netlink_index_to_iface (ifindex);
if (!iface)
return FALSE;
num_addrs = nm_ip6_config_get_num_addresses (config);
addrs = g_new0 (struct rtnl_addr *, num_addrs + 1);
for (i = 0; i < num_addrs; i++) {
NMIP6Address *addr;
addr = nm_ip6_config_get_address (config, i);
g_assert (addr);
addrs[i] = nm_ip6_config_to_rtnl_addr (config, i, NM_RTNL_ADDR_DEFAULT);
if (!addrs[i]) {
nm_log_warn (LOGD_DEVICE | LOGD_IP6,
"(%s): couldn't create rtnl address!",
iface ? iface : "unknown");
continue;
}
rtnl_addr_set_ifindex (addrs[i], ifindex);
}
g_free (iface);
return sync_addresses (ifindex, AF_INET6, addrs, num_addrs);
}
/*
* nm_system_apply_ip6_config
*
* Set IPv6 configuration of the device from an NMIP6Config object.
*
*/
gboolean
nm_system_apply_ip6_config (int ifindex,
NMIP6Config *config,
int priority,
NMIP6ConfigCompareFlags flags)
{
int i;
g_return_val_if_fail (ifindex > 0, FALSE);
g_return_val_if_fail (config != NULL, FALSE);
if (flags & NM_IP6_COMPARE_FLAG_ADDRESSES) {
if (!add_ip6_addresses (config, ifindex))
return FALSE;
sleep (1); // FIXME?
}
if (flags & NM_IP6_COMPARE_FLAG_ROUTES) {
char *iface = nm_netlink_index_to_iface (ifindex);
for (i = 0; i < nm_ip6_config_get_num_routes (config); i++) {
NMIP6Route *route = nm_ip6_config_get_route (config, i);
int err;
/* Don't add the route if it doesn't have a gateway and the connection
* is never supposed to be the default connection.
*/
if ( nm_ip6_config_get_never_default (config)
&& IN6_IS_ADDR_UNSPECIFIED (nm_ip6_route_get_dest (route)))
continue;
err = nm_system_set_ip6_route (ifindex,
nm_ip6_route_get_dest (route),
nm_ip6_route_get_prefix (route),
nm_ip6_route_get_next_hop (route),
nm_ip6_route_get_metric (route),
nm_ip6_config_get_mss (config),
RTPROT_UNSPEC,
RT_TABLE_UNSPEC,
NULL);
if (err && (err != -NLE_EXIST)) {
nm_log_err (LOGD_DEVICE | LOGD_IP6,
"(%s): failed to set IPv6 route: %s",
iface ? iface : "unknown",
nl_geterror (err));
}
}
g_free (iface);
}
// FIXME
// if (priority > 0)
// nm_system_device_set_priority (iface, config, priority);
return TRUE;
}
/**
* nm_system_iface_set_up:
* @ifindex: interface index
* @up: %TRUE to bring interface up, or %FALSE to take it down
* @no_firmware: on return, %TRUE if the operation may have failed due to
* missing firmware
*
* Bring the interface up or take it down.
*
* Returns: %TRUE on success, %FALSE on failure
**/
gboolean
nm_system_iface_set_up (int ifindex,
gboolean up,
gboolean *no_firmware)
{
struct rtnl_link *request = NULL, *old = NULL;
struct nl_sock *nlh;
gboolean success = FALSE;
int err;
g_return_val_if_fail (ifindex > 0, FALSE);
if (no_firmware)
g_return_val_if_fail (*no_firmware == FALSE, FALSE);
if (!(request = rtnl_link_alloc ()))
return FALSE;
if (up)
rtnl_link_set_flags (request, IFF_UP);
else
rtnl_link_unset_flags (request, IFF_UP);
old = nm_netlink_index_to_rtnl_link (ifindex);
if (old) {
nlh = nm_netlink_get_default_handle ();
if (nlh) {
err = rtnl_link_change (nlh, old, request, 0);
if (err == 0) {
success = TRUE;
} else {
if ((err == -NLE_OBJ_NOTFOUND) && no_firmware && up)
*no_firmware = TRUE;
}
}
}
rtnl_link_put (old);
rtnl_link_put (request);
return success;
}
guint32
nm_system_iface_get_flags (int ifindex)
{
struct rtnl_link *l;
guint32 flags;
g_return_val_if_fail (ifindex > 0, FALSE);
l = nm_netlink_index_to_rtnl_link (ifindex);
if (l == NULL) {
char *iface = nm_netlink_index_to_iface (ifindex);
g_warn_if_fail (iface != NULL);
nm_log_err (LOGD_HW, "(%s): failed to get interface link object",
iface ? iface : "unknown");
g_free (iface);
return FALSE;
}
flags = rtnl_link_get_flags (l);
rtnl_link_put (l);
return flags;
}
/**
* nm_system_iface_is_up:
* @ifindex: interface index
*
* Returns: %TRUE if the interface is up, %FALSE if it was down or the check
* failed.
**/
gboolean
nm_system_iface_is_up (int ifindex)
{
return nm_system_iface_get_flags (ifindex) & IFF_UP;
}
/**
* nm_system_iface_set_mtu:
* @ifindex: interface index
* @mtu: the new MTU
*
* Returns: %TRUE if the request was successful, %FALSE if it failed
**/
gboolean
nm_system_iface_set_mtu (int ifindex, guint32 mtu)
{
struct rtnl_link *old;
struct rtnl_link *new;
gboolean success = FALSE;
struct nl_sock *nlh;
int err;
g_return_val_if_fail (ifindex > 0, FALSE);
g_return_val_if_fail (mtu > 0, FALSE);
new = rtnl_link_alloc ();
if (!new)
return FALSE;
old = nm_netlink_index_to_rtnl_link (ifindex);
if (old) {
rtnl_link_set_mtu (new, mtu);
nlh = nm_netlink_get_default_handle ();
if (nlh) {
err = rtnl_link_change (nlh, old, new, 0);
if (err == 0)
success = TRUE;
else {
char *iface = nm_netlink_index_to_iface (ifindex);
nm_log_warn (LOGD_HW, "(%s): failed to change interface MTU",
iface ? iface : "unknown");
g_free (iface);
}
}
rtnl_link_put (old);
}
rtnl_link_put (new);
return success;
}
/**
* nm_system_iface_set_mac:
* @ifindex: interface index
* @mac: new MAC address
*
* Attempts to change the interface's MAC address to the requested value,
* ie MAC spoofing or cloning.
*
* Returns: %TRUE if the request succeeded, %FALSE if it failed.
**/
gboolean
nm_system_iface_set_mac (int ifindex, const struct ether_addr *mac)
{
struct rtnl_link *old, *new;
gboolean success = FALSE;
struct nl_sock *nlh;
char *iface;
struct nl_addr *addr = NULL;
int err;
g_return_val_if_fail (ifindex > 0, FALSE);
g_return_val_if_fail (mac != NULL, FALSE);
new = rtnl_link_alloc ();
if (!new)
return FALSE;
iface = nm_netlink_index_to_iface (ifindex);
if (!iface)
goto out;
old = nm_netlink_index_to_rtnl_link (ifindex);
if (old) {
addr = nl_addr_build (AF_LLC, (void *) mac, ETH_ALEN);
if (!addr) {
nm_log_err (LOGD_HW, "(%s): failed to allocate memory for MAC address change", iface);
rtnl_link_put (old);
rtnl_link_put (new);
return FALSE;
}
rtnl_link_set_addr (new, addr);
nl_addr_put (addr);
nlh = nm_netlink_get_default_handle ();
if (nlh) {
err = rtnl_link_change (nlh, old, new, 0);
if (err == 0)
success = TRUE;
else
nm_log_warn (LOGD_HW, "(%s): failed to change interface MAC address", iface);
}
rtnl_link_put (old);
}
out:
rtnl_link_put (new);
g_free (iface);
return success;
}
/**
* nm_system_iface_set_arp:
* @ifindex: interface index
* @enable: %TRUE to enable ARP, or %FALSE to disable
*
* Sets a flag to indicate that ARP should or should not be used on the
* interface. Point-to-point or IPv4 /32 interfaces often require that ARP
* be disabled.
*
* Returns: %TRUE on success, %FALSE on failure
**/
gboolean
nm_system_iface_set_arp (int ifindex, gboolean enable)
{
struct rtnl_link *request = NULL, *old = NULL;
struct nl_sock *nlh;
gboolean success = FALSE;
int err;
g_return_val_if_fail (ifindex > 0, FALSE);
if (!(request = rtnl_link_alloc ()))
return FALSE;
if (enable)
rtnl_link_unset_flags (request, IFF_NOARP);
else
rtnl_link_set_flags (request, IFF_NOARP);
old = nm_netlink_index_to_rtnl_link (ifindex);
if (old) {
nlh = nm_netlink_get_default_handle ();
if (nlh) {
err = rtnl_link_change (nlh, old, request, 0);
if (err == 0)
success = TRUE;
}
}
rtnl_link_put (old);
rtnl_link_put (request);
return success;
}
static struct rtnl_route *
add_ip4_route_to_gateway (int ifindex, guint32 gw, guint32 mss)
{
struct nl_sock *nlh;
struct rtnl_route *route = NULL;
int err;
nlh = nm_netlink_get_default_handle ();
g_return_val_if_fail (nlh != NULL, NULL);
/* Gateway might be over a bridge; try adding a route to gateway first */
route = nm_netlink_route_new (ifindex, AF_INET, mss,
NMNL_PROP_SCOPE, RT_SCOPE_LINK,
NMNL_PROP_TABLE, RT_TABLE_MAIN,
NULL);
g_return_val_if_fail (route != NULL, NULL);
/* Add direct route to the gateway */
err = nm_netlink_route4_add (route, &gw, 32, NULL, 0);
if (err) {
char *iface = nm_netlink_index_to_iface (ifindex);
nm_log_err (LOGD_DEVICE | LOGD_IP4,
"(%s): failed to add IPv4 route to gateway (%d)",
iface ? iface : "unknown", err);
g_free (iface);
goto error;
}
return route;
error:
rtnl_route_put (route);
return NULL;
}
static int
replace_default_ip4_route (int ifindex, guint32 gw, guint32 mss)
{
struct rtnl_route *route = NULL;
struct nl_sock *nlh;
int err = -1;
guint32 dst = 0;
g_return_val_if_fail (ifindex > 0, -ENODEV);
nlh = nm_netlink_get_default_handle ();
g_return_val_if_fail (nlh != NULL, -ENOMEM);
route = nm_netlink_route_new (ifindex, AF_INET, mss,
NMNL_PROP_SCOPE, RT_SCOPE_UNIVERSE,
NMNL_PROP_TABLE, RT_TABLE_MAIN,
NULL);
g_return_val_if_fail (route != NULL, -ENOMEM);
/* Add the new default route */
err = nm_netlink_route4_add (route, &dst, 0, &gw, NLM_F_REPLACE);
if (err == -NLE_EXIST)
err = 0;
rtnl_route_put (route);
return err;
}
/*
* nm_system_replace_default_ip4_route_vpn
*
* Replace default IPv4 route with one via the current device
*
*/
gboolean
nm_system_replace_default_ip4_route_vpn (int ifindex,
guint32 ext_gw,
guint32 int_gw,
guint32 mss,
int parent_ifindex,
guint32 parent_mss)
{
struct rtnl_route *gw_route = NULL;
struct nl_sock *nlh;
gboolean success = FALSE;
int err;
char *iface;
nlh = nm_netlink_get_default_handle ();
g_return_val_if_fail (nlh != NULL, FALSE);
err = replace_default_ip4_route (ifindex, int_gw, mss);
if (err == 0)
return TRUE;
iface = nm_netlink_index_to_iface (ifindex);
if (!iface)
goto out;
if ((err != -NLE_OBJ_NOTFOUND) && (err != -NLE_FAILURE)) {
nm_log_err (LOGD_DEVICE | LOGD_VPN | LOGD_IP4,
"(%s): failed to set IPv4 default route: %d",
iface, err);
goto out;
}
/* Try adding a direct route to the gateway first */
gw_route = add_ip4_route_to_gateway (parent_ifindex, ext_gw, parent_mss);
if (!gw_route)
goto out;
/* Try adding the original route again */
err = replace_default_ip4_route (ifindex, int_gw, mss);
if (err != 0) {
nm_netlink_route_delete (gw_route);
nm_log_err (LOGD_DEVICE | LOGD_VPN | LOGD_IP4,
"(%s): failed to set IPv4 default route (pass #2): %d",
iface, err);
} else
success = TRUE;
out:
if (gw_route)
rtnl_route_put (gw_route);
g_free (iface);
return success;
}
/*
* nm_system_replace_default_ip4_route
*
* Replace default IPv4 route with one via the current device
*
*/
gboolean
nm_system_replace_default_ip4_route (int ifindex, guint32 gw, guint32 mss)
{
struct rtnl_route *gw_route = NULL;
gboolean success = FALSE;
char *iface;
int err;
err = replace_default_ip4_route (ifindex, gw, mss);
if (err == 0)
return TRUE;
iface = nm_netlink_index_to_iface (ifindex);
if (!iface)
goto out;
if (err != -NLE_OBJ_NOTFOUND) {
nm_log_err (LOGD_DEVICE | LOGD_IP4,
"(%s): failed to set IPv4 default route: %d",
iface, err);
goto out;
}
/* Try adding a direct route to the gateway first */
gw_route = add_ip4_route_to_gateway (ifindex, gw, mss);
if (!gw_route)
goto out;
/* Try adding the original route again */
err = replace_default_ip4_route (ifindex, gw, mss);
if (err != 0) {
nm_netlink_route_delete (gw_route);
nm_log_err (LOGD_DEVICE | LOGD_IP4,
"(%s): failed to set IPv4 default route (pass #2): %d",
iface, err);
} else
success = TRUE;
out:
if (gw_route)
rtnl_route_put (gw_route);
g_free (iface);
return success;
}
static struct rtnl_route *
add_ip6_route_to_gateway (int ifindex, const struct in6_addr *gw, int mss)
{
struct nl_sock *nlh;
struct rtnl_route *route = NULL;
int err;
nlh = nm_netlink_get_default_handle ();
g_return_val_if_fail (nlh != NULL, NULL);
/* Gateway might be over a bridge; try adding a route to gateway first */
route = nm_netlink_route_new (ifindex, AF_INET6, mss,
NMNL_PROP_SCOPE, RT_SCOPE_LINK,
NMNL_PROP_TABLE, RT_TABLE_MAIN,
NULL);
g_return_val_if_fail (route != NULL, NULL);
/* Add direct route to the gateway */
err = nm_netlink_route6_add (route, gw, 128, NULL, 0);
if (err) {
char *iface = nm_netlink_index_to_iface (ifindex);
nm_log_err (LOGD_DEVICE | LOGD_IP6,
"(%s): failed to add IPv6 route to gateway (%d)",
iface ? iface : "unknown", err);
g_free (iface);
rtnl_route_put (route);
route = NULL;
}
return route;
}
static int
add_default_ip6_route (int ifindex, const struct in6_addr *gw, int mss)
{
struct rtnl_route *route = NULL;
struct nl_sock *nlh;
int err = -1;
g_return_val_if_fail (ifindex > 0, FALSE);
nlh = nm_netlink_get_default_handle ();
g_return_val_if_fail (nlh != NULL, -ENOMEM);
route = nm_netlink_route_new (ifindex, AF_INET6, mss,
NMNL_PROP_SCOPE, RT_SCOPE_UNIVERSE,
NMNL_PROP_TABLE, RT_TABLE_MAIN,
NMNL_PROP_PRIO, 1,
NULL);
g_return_val_if_fail (route != NULL, -ENOMEM);
/* Add the new default route */
err = nm_netlink_route6_add (route, &in6addr_any, 0, gw, NLM_F_CREATE);
if (err == -NLE_EXIST)
err = 0;
rtnl_route_put (route);
return err;
}
static struct rtnl_route *
find_static_default_routes (struct rtnl_route *route,
struct nl_addr *dst,
const char *iface,
gpointer user_data)
{
GList **def_routes = user_data;
if ( nl_addr_get_prefixlen (dst) == 0
&& rtnl_route_get_protocol (route) == RTPROT_STATIC) {
rtnl_route_get (route);
*def_routes = g_list_prepend (*def_routes, route);
}
return NULL;
}
static int
replace_default_ip6_route (int ifindex, const struct in6_addr *gw, int mss)
{
GList *def_routes, *iter;
struct rtnl_route *route;
char *iface;
char gw_str[INET6_ADDRSTRLEN + 1];
g_return_val_if_fail (ifindex > 0, FALSE);
if (nm_logging_level_enabled (LOGL_DEBUG)) {
if (gw) {
memset (gw_str, 0, sizeof (gw_str));
if (inet_ntop (AF_INET6, gw, gw_str, sizeof (gw_str) - 1))
nm_log_dbg (LOGD_IP6, "Setting IPv6 default route via %s", gw_str);
} else {
nm_log_dbg (LOGD_IP6, "Setting IPv6 default route via %s",
nm_netlink_index_to_iface (ifindex));
}
}
/* We can't just use NLM_F_REPLACE here like in the IPv4 case, because
* the kernel doesn't like it if we replace the default routes it
* creates. (See rh#785772.) So we delete any non-kernel default routes,
* and then add a new default route of our own with a lower metric than
* the kernel ones.
*/
def_routes = NULL;
nm_netlink_foreach_route (ifindex, AF_INET6, RT_SCOPE_UNIVERSE, TRUE,
find_static_default_routes, &def_routes);
for (iter = def_routes; iter; iter = iter->next) {
route = iter->data;
if (!nm_netlink_route_delete (route)) {
iface = nm_netlink_index_to_iface (ifindex);
nm_log_err (LOGD_DEVICE | LOGD_IP6,
"(%s): failed to delete existing IPv6 default route",
iface);
g_free (iface);
}
rtnl_route_put (route);
}
g_list_free (def_routes);
return add_default_ip6_route (ifindex, gw, mss);
}
/*
* nm_system_replace_default_ip6_route
*
* Replace default IPv6 route with one via the given gateway
*
*/
gboolean
nm_system_replace_default_ip6_route (int ifindex, const struct in6_addr *gw)
{
struct rtnl_route *gw_route = NULL;
gboolean success = FALSE;
char *iface;
int err;
err = replace_default_ip6_route (ifindex, gw, 0);
if (err == 0 || err == -NLE_EXIST)
return TRUE;
iface = nm_netlink_index_to_iface (ifindex);
if (!iface)
goto out;
if (err != -NLE_OBJ_NOTFOUND) {
nm_log_err (LOGD_DEVICE | LOGD_IP6,
"(%s): failed to set IPv6 default route: %d",
iface, err);
goto out;
}
/* Try adding a direct route to the gateway first */
gw_route = add_ip6_route_to_gateway (ifindex, gw, 0);
if (!gw_route)
goto out;
/* Try adding the original route again */
err = replace_default_ip6_route (ifindex, gw, 0);
if (err != 0) {
nm_netlink_route_delete (gw_route);
nm_log_err (LOGD_DEVICE | LOGD_IP6,
"(%s): failed to set IPv6 default route (pass #2): %d",
iface, err);
} else
success = TRUE;
out:
if (gw_route)
rtnl_route_put (gw_route);
g_free (iface);
return success;
}
gboolean
nm_system_replace_default_ip6_route_vpn (int ifindex,
const struct in6_addr *ext_gw,
const struct in6_addr *int_gw,
guint32 mss,
int parent_ifindex,
guint32 parent_mss)
{
struct rtnl_route *gw_route = NULL;
struct nl_sock *nlh;
gboolean success = FALSE;
int err;
char *iface;
nlh = nm_netlink_get_default_handle ();
g_return_val_if_fail (nlh != NULL, FALSE);
err = replace_default_ip6_route (ifindex, int_gw, mss);
if (err == 0)
return TRUE;
iface = nm_netlink_index_to_iface (ifindex);
if (!iface)
goto out;
if ((err != -NLE_OBJ_NOTFOUND) && (err != -NLE_FAILURE)) {
nm_log_err (LOGD_DEVICE | LOGD_VPN | LOGD_IP6,
"(%s): failed to set IPv6 default route: %d",
iface, err);
goto out;
}
/* Try adding a direct route to the gateway first */
gw_route = add_ip6_route_to_gateway (parent_ifindex, ext_gw, parent_mss);
if (!gw_route)
goto out;
/* Try adding the original route again */
err = replace_default_ip6_route (ifindex, int_gw, mss);
if (err != 0) {
nm_netlink_route_delete (gw_route);
nm_log_err (LOGD_DEVICE | LOGD_VPN | LOGD_IP6,
"(%s): failed to set IPv6 default route (pass #2): %d",
iface, err);
} else
success = TRUE;
out:
if (gw_route)
rtnl_route_put (gw_route);
g_free (iface);
return success;
}
/*
* nm_system_iface_flush_addresses
*
* Flush all network addresses associated with a network device
*
*/
gboolean
nm_system_iface_flush_addresses (int ifindex, int family)
{
g_return_val_if_fail (ifindex > 0, FALSE);
return sync_addresses (ifindex, family, NULL, 0);
}
static struct rtnl_route *
delete_one_route (struct rtnl_route *route,
struct nl_addr *dst,
const char *iface,
gpointer user_data)
{
guint32 log_level = GPOINTER_TO_UINT (user_data);
nm_log_dbg (log_level, " deleting route");
if (!nm_netlink_route_delete (route))
nm_log_err (LOGD_DEVICE, "(%s): failed to delete route", iface);
return NULL;
}
/**
* nm_system_iface_flush_routes:
* @ifindex: interface index
* @family: address family, i.e. AF_INET, AF_INET6, or AF_UNSPEC
*
* Flush all network addresses associated with a network device.
*
* Returns: %TRUE on success, %FALSE on failure
**/
gboolean
nm_system_iface_flush_routes (int ifindex, int family)
{
guint32 log_level = LOGD_IP4 | LOGD_IP6;
const char *sf = "UNSPEC";
char *iface;
g_return_val_if_fail (ifindex > 0, FALSE);
iface = nm_netlink_index_to_iface (ifindex);
g_return_val_if_fail (iface != NULL, FALSE);
if (family == AF_INET) {
log_level = LOGD_IP4;
sf = "INET";
} else if (family == AF_INET6) {
log_level = LOGD_IP6;
sf = "INET6";
}
nm_log_dbg (log_level, "(%s): flushing routes ifindex %d family %s (%d)",
iface, ifindex, sf, family);
/* We don't want to flush IPv6 link-local routes that may exist on the
* the interface since the LL address and routes should normally stay
* assigned all the time.
*/
nm_netlink_foreach_route (ifindex, family, RT_SCOPE_UNIVERSE, TRUE, delete_one_route, GUINT_TO_POINTER (log_level));
g_free (iface);
return TRUE;
}
static struct rtnl_route *
find_route (struct rtnl_route *route,
struct nl_addr *dst,
const char *iface,
gpointer user_data)
{
NMIP4Config *config = user_data;
struct in_addr *dst_addr;
int num;
int i;
if (dst && (nl_addr_get_family (dst) != AF_INET))
return NULL;
/* Find the first route that handles a subnet of at least one of the
* device's IPv4 addresses.
*/
dst_addr = nl_addr_get_binary_addr (dst);
num = nm_ip4_config_get_num_addresses (config);
for (i = 0; i < num; i++) {
NMIP4Address *addr = nm_ip4_config_get_address (config, i);
guint32 prefix = nm_ip4_address_get_prefix (addr);
guint32 address = nm_ip4_address_get_address (addr);
if ( prefix == nl_addr_get_prefixlen (dst)
&& (address & nm_utils_ip4_prefix_to_netmask (prefix)) == dst_addr->s_addr)
return route;
}
return NULL;
}
static void
nm_system_device_set_priority (int ifindex,
NMIP4Config *config,
int priority)
{
struct nl_sock *nlh;
struct rtnl_route *found;
found = nm_netlink_foreach_route (ifindex, AF_INET, RT_SCOPE_LINK, FALSE, find_route, config);
if (found) {
nlh = nm_netlink_get_default_handle ();
nm_netlink_route_delete (found);
rtnl_route_set_priority (found, priority);
rtnl_route_add (nlh, found, 0);
rtnl_route_put (found);
}
}
static const struct {
const char *option;
const char *default_value;
} bonding_defaults[] = {
{ "mode", "balance-rr" },
{ "arp_interval", "0" },
{ "miimon", "0" },
{ "ad_select", "stable" },
{ "arp_validate", "none" },
{ "downdelay", "0" },
{ "fail_over_mac", "none" },
{ "lacp_rate", "slow" },
{ "min_links", "0" },
{ "num_grat_arp", "1" },
{ "num_unsol_na", "1" },
{ "primary", "" },
{ "primary_reselect", "always" },
{ "resend_igmp", "1" },
{ "updelay", "0" },
{ "use_carrier", "1" },
{ "xmit_hash_policy", "layer2" },
{ NULL, NULL }
};
static void
remove_bonding_entries (const char *iface, const char *path)
{
char cmd[20];
char *value, **entries;
gboolean ret;
int i;
if (!g_file_get_contents (path, &value, NULL, NULL))
return;
entries = g_strsplit (value, " ", -1);
for (i = 0; entries[i]; i++) {
snprintf (cmd, sizeof (cmd), "-%s", g_strstrip (entries[i]));
ret = nm_utils_do_sysctl (path, cmd);
if (!ret) {
nm_log_warn (LOGD_HW, "(%s): failed to remove entry '%s' from '%s'",
iface, entries[i], path);
}
}
g_strfreev (entries);
}
static gboolean
option_valid_for_nm_setting (const char *option, const char **valid_opts)
{
while (*valid_opts) {
if (strcmp (option, *valid_opts) == 0)
return TRUE;
valid_opts++;
}
return FALSE;
}
gboolean
nm_system_apply_bonding_config (const char *iface, NMSettingBond *s_bond)
{
const char **valid_opts;
const char *option, *value;
char path[FILENAME_MAX];
char *current, *space;
gboolean ret;
int i;
g_return_val_if_fail (iface != NULL, FALSE);
/* Remove old slaves and arp_ip_targets */
snprintf (path, sizeof (path), "/sys/class/net/%s/bonding/arp_ip_target", iface);
remove_bonding_entries (iface, path);
snprintf (path, sizeof (path), "/sys/class/net/%s/bonding/slaves", iface);
remove_bonding_entries (iface, path);
/* Apply config/defaults */
valid_opts = nm_setting_bond_get_valid_options (s_bond);
for (i = 0; bonding_defaults[i].option; i++) {
option = bonding_defaults[i].option;
if (option_valid_for_nm_setting (option, valid_opts))
value = nm_setting_bond_get_option_by_name (s_bond, option);
else
value = NULL;
if (!value)
value = bonding_defaults[i].default_value;
snprintf (path, sizeof (path), "/sys/class/net/%s/bonding/%s", iface, option);
if (g_file_get_contents (path, &current, NULL, NULL)) {
g_strstrip (current);
space = strchr (current, ' ');
if (space)
*space = '\0';
if (strcmp (current, value) != 0) {
ret = nm_utils_do_sysctl (path, value);
if (!ret) {
nm_log_warn (LOGD_HW, "(%s): failed to set bonding attribute "
"'%s' to '%s'", iface, option, value);
}
}
}
}
/* Handle arp_ip_target */
value = nm_setting_bond_get_option_by_name (s_bond, "arp_ip_target");
if (value) {
char **addresses, cmd[20];
snprintf (path, sizeof (path), "/sys/class/net/%s/bonding/arp_ip_target", iface);
addresses = g_strsplit (value, ",", -1);
for (i = 0; addresses[i]; i++) {
snprintf (cmd, sizeof (cmd), "+%s", g_strstrip (addresses[i]));
ret = nm_utils_do_sysctl (path, cmd);
if (!ret) {
nm_log_warn (LOGD_HW, "(%s): failed to add arp_ip_target '%s'",
iface, addresses[i]);
}
}
g_strfreev (addresses);
}
return TRUE;
}
/**
* nm_system_add_bonding_master:
* @iface: the interface name for the new bond master
*
* Adds a virtual bonding device if it does not exist yet.
*
* Returns: %TRUE on success, %FALSE on failure
*/
gboolean
nm_system_add_bonding_master (const char *iface)
{
struct nl_sock *sock;
int err;
g_return_val_if_fail (iface != NULL, FALSE);
sock = nm_netlink_get_default_handle ();
/* Existing bonding devices with matching name will be reused */
err = rtnl_link_bond_add (sock, iface, NULL);
if (err < 0) {
nm_log_err (LOGD_DEVICE, "(%s): error %d returned from "
"rtnl_link_bond_add(): %s",
iface, err, nl_geterror (err));
return FALSE;
}
return TRUE;
}
static gboolean
nm_system_bond_compat_enslave (const char *master_iface, const char *slave_iface)
{
struct ifreq ifr;
int fd;
gboolean ret = FALSE;
memset (&ifr, 0, sizeof (ifr));
fd = socket (PF_INET, SOCK_DGRAM, 0);
if (fd < 0) {
nm_log_err (LOGD_DEVICE, "couldn't open control socket.");
return FALSE;
}
strncpy (ifr.ifr_name, master_iface, IFNAMSIZ);
strncpy (ifr.ifr_slave, slave_iface, IFNAMSIZ);
if (ioctl (fd, SIOCBONDENSLAVE, &ifr) < 0 &&
ioctl (fd, BOND_ENSLAVE_OLD, &ifr) < 0) {
nm_log_err (LOGD_DEVICE, "(%s): error enslaving %s: %d (%s)",
master_iface, slave_iface, errno, strerror (errno));
} else
ret = TRUE;
close (fd);
return ret;
}
/**
* nm_system_bond_enslave:
* @master_ifindex: master device interface index
* @master_iface: master device interface name
* @slave_ifindex: slave device interface index
* @slave_iface: slave device interface name
*
* Enslaves the 'slave' to 'master. This function targets implementing a
* generic interface to attaching all kinds of slaves to masters. Currently
* only bonding is properly supported due to the backwards compatibility
* function being bonding specific.
*
* The slave device needs to be down as a prerequisite.
*
* Returns: %TRUE on success, or %FALSE
*/
gboolean
nm_system_bond_enslave (gint master_ifindex,
const char *master_iface,
gint slave_ifindex,
const char *slave_iface)
{
struct nl_sock *sock;
int err;
g_return_val_if_fail (master_ifindex > 0, FALSE);
g_return_val_if_fail (master_iface != NULL, FALSE);
g_return_val_if_fail (slave_ifindex > 0, FALSE);
g_return_val_if_fail (slave_iface != NULL, FALSE);
sock = nm_netlink_get_default_handle ();
if (!(nm_system_iface_get_flags (master_ifindex) & IFF_MASTER)) {
nm_log_err (LOGD_DEVICE, "(%s): interface is not a master", master_iface);
return FALSE;
}
g_assert (!nm_system_iface_is_up (slave_ifindex));
if (nm_system_iface_get_flags (slave_ifindex) & IFF_SLAVE) {
nm_log_err (LOGD_DEVICE, "(%s): %s is already a slave",
master_iface, slave_iface);
return FALSE;
}
err = rtnl_link_bond_enslave_ifindex (sock, master_ifindex, slave_ifindex);
if (err == -NLE_OPNOTSUPP)
return nm_system_bond_compat_enslave (master_iface, slave_iface);
if (err < 0) {
nm_log_err (LOGD_DEVICE, "(%s): error enslaving %s: %d (%s)",
master_iface, slave_iface, err, nl_geterror (err));
return FALSE;
}
return TRUE;
}
static gboolean
nm_system_bond_compat_release (const char *master_iface, const char *slave_iface)
{
struct ifreq ifr;
int fd;
gboolean ret = FALSE;
memset (&ifr, 0, sizeof (ifr));
fd = socket (PF_INET, SOCK_DGRAM, 0);
if (fd < 0) {
nm_log_err (LOGD_DEVICE, "couldn't open control socket.");
return FALSE;
}
strncpy (ifr.ifr_name, master_iface, IFNAMSIZ);
strncpy (ifr.ifr_slave, slave_iface, IFNAMSIZ);
if (ioctl (fd, SIOCBONDRELEASE, &ifr) < 0 &&
ioctl (fd, BOND_RELEASE_OLD, &ifr) < 0) {
nm_log_err (LOGD_DEVICE, "(%s): error releasing slave %s: %d (%s)",
master_iface, slave_iface, errno, strerror (errno));
} else
ret = TRUE;
close (fd);
return ret;
}
/**
* nm_system_bond_release:
* @master_ifindex: master device interface index
* @master_iface: master device interface name
* @slave_ifindex: slave device interface index
* @slave_iface: slave device interface name
*
* Releases the 'slave' which is attached to 'master. This function targets
* implementing a generic interface to releasing all kinds of slaves. Currently
* only bonding is properly supported due to the backwards compatibility
* function being bonding specific.
*
* Returns: %TRUE on success, or %FALSE
*/
gboolean
nm_system_bond_release (gint master_ifindex,
const char *master_iface,
gint slave_ifindex,
const char *slave_iface)
{
struct nl_sock *sock;
int err;
g_return_val_if_fail (master_ifindex > 0, FALSE);
g_return_val_if_fail (master_iface != NULL, FALSE);
g_return_val_if_fail (slave_ifindex > 0, FALSE);
g_return_val_if_fail (slave_iface != NULL, FALSE);
sock = nm_netlink_get_default_handle ();
/* Only release if this is actually a slave */
if (!(nm_system_iface_get_flags (slave_ifindex) & IFF_SLAVE))
return TRUE;
err = rtnl_link_bond_release_ifindex (sock, slave_ifindex);
if (err == -NLE_OPNOTSUPP)
return nm_system_bond_compat_release (master_iface, slave_iface);
else if (err < 0) {
nm_log_err (LOGD_DEVICE, "(%s): error releasing slave %s: %d (%s)",
master_iface, slave_iface, err, nl_geterror (err));
return FALSE;
}
return TRUE;
}
/**
* nm_system_get_iface_type_compat:
* @ifindex: interface index
* @name: name of interface
*
* Lookup the type of an interface. At least one of @ifindex or @name must
* be provided.
*
* Returns: Interface type (NM_IFACE_TYPE_*) or NM_IFACE_TYPE_UNSPEC.
**/
static int
nm_system_compat_get_iface_type (int ifindex, const char *name)
{
int res = NM_IFACE_TYPE_UNSPEC;
char *ifname = NULL;
struct vlan_ioctl_args ifv;
struct ifreq ifr;
struct ifbond ifb;
int fd;
g_return_val_if_fail (ifindex > 0 || name, NM_IFACE_TYPE_UNSPEC);
if ((fd = socket (AF_INET, SOCK_STREAM, 0)) < 0) {
nm_log_err (LOGD_DEVICE, "couldn't open control socket.");
goto out;
}
if (!name) {
g_assert (ifindex > 0);
ifname = nm_netlink_index_to_iface (ifindex);
}
/* Check VLAN */
memset (&ifv, 0, sizeof (ifv));
ifv.cmd = GET_VLAN_VID_CMD;
strncpy (ifv.device1, ifname ? ifname : name, sizeof (ifv.device1) - 1);
if (ioctl (fd, SIOCGIFVLAN, &ifv) == 0) {
res = NM_IFACE_TYPE_VLAN;
goto out;
}
/* and bond */
memset (&ifr, 0, sizeof (ifr));
strncpy (ifr.ifr_name, ifname ? ifname : name, sizeof (ifr.ifr_name) - 1);
memset (&ifb, 0, sizeof (ifb));
ifr.ifr_data = (caddr_t) &ifb;
if (ioctl (fd, SIOCBONDINFOQUERY, &ifr) == 0) {
res = NM_IFACE_TYPE_BOND;
goto out;
}
out:
close (fd);
g_free (ifname);
return res;
}
/**
* nm_system_get_iface_type:
* @ifindex: interface index
* @name: name of interface
*
* Lookup the type of an interface. At least one of @ifindex or @name must
* be provided.
*
* Returns: Interface type (NM_IFACE_TYPE_*) or NM_IFACE_TYPE_UNSPEC.
**/
int
nm_system_get_iface_type (int ifindex, const char *name)
{
struct rtnl_link *result;
struct nl_sock *nlh;
char *type;
int res = NM_IFACE_TYPE_UNSPEC;
int err;
g_return_val_if_fail (ifindex > 0 || name, NM_IFACE_TYPE_UNSPEC);
nlh = nm_netlink_get_default_handle ();
if (!nlh)
goto out;
/* Prefer interface indexes to names */
err = rtnl_link_get_kernel (nlh, ifindex, ifindex < 0 ? name : NULL, &result);
if (err < 0) {
if (err == -NLE_OPNOTSUPP)
res = nm_system_compat_get_iface_type (ifindex, name);
goto out;
}
type = rtnl_link_get_type (result);
if (!g_strcmp0 (type, "bond"))
res = NM_IFACE_TYPE_BOND;
else if (!g_strcmp0 (type, "vlan"))
res = NM_IFACE_TYPE_VLAN;
else if (!g_strcmp0 (type, "bridge"))
res = NM_IFACE_TYPE_BRIDGE;
else if (!g_strcmp0 (type, "dummy"))
res = NM_IFACE_TYPE_DUMMY;
rtnl_link_put (result);
out:
return res;
}
/**
* nm_system_get_iface_vlan_info:
* @ifindex: the VLAN interface index
* @out_parent_ifindex: on success, the interface index of the parent interface of
* @iface
* @out_vlan_id: on success, the VLAN ID of @iface
*
* Gets the VLAN parent interface name and VLAN ID.
*
* Returns: %TRUE if the interface is a VLAN device and no error occurred;
* %FALSE if the interface was not a VLAN interface or an error occurred
**/
gboolean
nm_system_get_iface_vlan_info (int ifindex,
int *out_parent_ifindex,
int *out_vlan_id)
{
struct nl_sock *nlh;
struct rtnl_link *lk;
struct nl_cache *cache = NULL;
gboolean success = FALSE;
int ret;
if (nm_system_get_iface_type (ifindex, NULL) != NM_IFACE_TYPE_VLAN)
return FALSE;
nlh = nm_netlink_get_default_handle ();
if (!nlh)
return FALSE;
ret = rtnl_link_alloc_cache (nlh, &cache);
g_return_val_if_fail (ret == 0, FALSE);
g_return_val_if_fail (cache != NULL, FALSE);
lk = rtnl_link_get (cache, ifindex);
if (lk) {
if (out_parent_ifindex)
*out_parent_ifindex = rtnl_link_get_link (lk);
if (out_vlan_id)
*out_vlan_id = rtnl_link_vlan_get_id (lk);
rtnl_link_put (lk);
success = TRUE;
}
nl_cache_free (cache);
return success;
}
static gboolean
nm_system_iface_compat_set_name (const char *old_name, const char *new_name)
{
int fd;
struct ifreq ifr;
if ((fd = socket (AF_INET, SOCK_STREAM, 0)) < 0) {
nm_log_err (LOGD_DEVICE, "couldn't open control socket.");
return -1;
}
memset (&ifr, 0, sizeof (struct ifreq));
strncpy (ifr.ifr_name, old_name, sizeof (ifr.ifr_name));
strncpy (ifr.ifr_newname, new_name, sizeof (ifr.ifr_newname));
if (ioctl (fd, SIOCSIFNAME, &ifr) < 0) {
nm_log_err (LOGD_DEVICE, "cann't change %s with %s.", old_name, new_name);
close (fd);
return FALSE;
}
close (fd);
return TRUE;
}
static gboolean
nm_system_iface_compat_set_vlan_name_type (int name_type)
{
int fd;
struct vlan_ioctl_args if_request;
if ((fd = socket (AF_INET, SOCK_STREAM, 0)) < 0) {
nm_log_err (LOGD_DEVICE, "couldn't open control socket.");
return -1;
}
memset (&if_request, 0, sizeof (struct vlan_ioctl_args));
if_request.cmd = SET_VLAN_NAME_TYPE_CMD;
if_request.u.name_type = name_type;
if (ioctl (fd, SIOCSIFVLAN, &if_request) < 0) {
nm_log_err (LOGD_DEVICE, "couldn't set name type.");
close (fd);
return FALSE;
}
close (fd);
return TRUE;
}
static gboolean
nm_system_iface_compat_add_vlan_device (const char *master, int vid)
{
int fd;
struct vlan_ioctl_args if_request;
g_return_val_if_fail (master, FALSE);
g_return_val_if_fail (vid < 4096, FALSE);
/*
* use VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD as default,
* we will overwrite it with rtnl_link_set_name() later.
*/
if (!nm_system_iface_compat_set_vlan_name_type (VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD))
return FALSE;
if ((fd = socket (AF_INET, SOCK_STREAM, 0)) < 0) {
nm_log_err (LOGD_DEVICE, "couldn't open control socket.");
return -1;
}
memset (&if_request, 0, sizeof (struct vlan_ioctl_args));
g_strlcpy (if_request.device1, master, sizeof (if_request.device1));
if_request.cmd = ADD_VLAN_CMD;
if_request.u.VID = vid;
if (ioctl (fd, SIOCSIFVLAN, &if_request) < 0) {
nm_log_err (LOGD_DEVICE, "couldn't add vlan device %s vid %d: %d.", master, vid, errno);
close (fd);
return FALSE;
}
close (fd);
return TRUE;
}
static gboolean
nm_system_iface_compat_rem_vlan_device (const char *iface)
{
int fd;
struct vlan_ioctl_args if_request;
if ((fd = socket (AF_INET, SOCK_STREAM, 0)) < 0) {
nm_log_err (LOGD_DEVICE, "couldn't open control socket.");
return -1;
}
memset (&if_request, 0, sizeof (struct vlan_ioctl_args));
g_strlcpy (if_request.device1, iface, sizeof (if_request.device1));
if_request.cmd = DEL_VLAN_CMD;
if (ioctl (fd, SIOCSIFVLAN, &if_request) < 0) {
nm_log_err (LOGD_DEVICE, "couldn't rem vlan device %s.", iface);
close (fd);
return FALSE;
}
close (fd);
return TRUE;
}
static gboolean
nm_system_iface_compat_add_vlan (NMConnection *connection,
const char *iface,
int master_ifindex)
{
NMSettingVlan *s_vlan;
int vlan_id;
guint32 vlan_flags = 0;
guint32 num, i, from, to;
int ifindex;
struct rtnl_link *new_link = NULL;
char *master = nm_netlink_index_to_iface (master_ifindex);
int itype;
gboolean created = FALSE;
s_vlan = nm_connection_get_setting_vlan (connection);
g_return_val_if_fail (s_vlan, FALSE);
vlan_id = nm_setting_vlan_get_id (s_vlan);
if (!iface) {
iface = nm_connection_get_virtual_iface_name (connection);
g_return_val_if_fail (iface != NULL, FALSE);
}
itype = nm_system_get_iface_type (-1, iface);
if (itype == NM_IFACE_TYPE_UNSPEC) {
char *name;
/* Create the VLAN interface. Use VLAN_NAME_TYPE_RAW_PLUS_VID_NO_PAD as
* default and change the name later via nm_system_iface_compat_set_name().
* The old ioctl-based VLAN kernel API has no ability to directly return
* the new interface's name or index, so we have to create it with a
* known name and do the rename dance instead.
*/
if (!nm_system_iface_compat_add_vlan_device (master, vlan_id))
return FALSE;
/* And rename it to what the connection wants */
name = nm_utils_new_vlan_name (master, vlan_id);
if (strcmp (name, iface) != 0) {
if (!nm_system_iface_compat_set_name (name, iface)) {
nm_system_iface_compat_rem_vlan_device (name);
g_free (name);
return FALSE;
}
}
g_free (name);
created = TRUE;
} else if (itype != NM_IFACE_TYPE_VLAN) {
nm_log_err (LOGD_DEVICE, "(%s): already exists but is not a VLAN interface.", iface);
return FALSE;
} else {
int tmp_vlan_id = -1, tmp_master_ifindex = -1;
/* VLAN interface with this name already exists. Be a bit paranoid and
* double-check the VLAN ID and parent ifindex.
*/
ifindex = nm_netlink_iface_to_index (iface);
if (ifindex <= 0)
return FALSE;
if (!nm_system_get_iface_vlan_info (ifindex, &tmp_master_ifindex, &tmp_vlan_id)) {
nm_log_err (LOGD_DEVICE, "(%s): failed to get VLAN interface info.", iface);
return FALSE;
}
if (tmp_master_ifindex != master_ifindex) {
nm_log_err (LOGD_DEVICE, "(%s): master ifindex (%d) does match expected (%d).",
iface, tmp_master_ifindex, master_ifindex);
return FALSE;
}
if (tmp_vlan_id != vlan_id) {
nm_log_err (LOGD_DEVICE, "(%s): VLAN ID %d does match expected ID %d.",
iface, tmp_vlan_id, vlan_id);
return FALSE;
}
nm_log_dbg (LOGD_DEVICE, "(%s): found existing VLAN interface.", iface);
}
ifindex = nm_netlink_iface_to_index (iface);
if (ifindex <= 0)
goto error;
new_link = nm_netlink_index_to_rtnl_link (ifindex);
if (!new_link)
goto error;
/* vconfig set_flag */
vlan_flags = nm_setting_vlan_get_flags (s_vlan);
if (vlan_flags) {
if (rtnl_link_vlan_set_flags (new_link, vlan_flags))
goto error_new_link;
}
/* vconfig set_ingress_map */
num = nm_setting_vlan_get_num_priorities (s_vlan, NM_VLAN_INGRESS_MAP);
for (i = 0; i < num; i++) {
if (nm_setting_vlan_get_priority (s_vlan, NM_VLAN_INGRESS_MAP, i, &from, &to)) {
if (rtnl_link_vlan_set_ingress_map (new_link, from, to))
goto error_new_link;
}
}
/* vconfig set_egress_map */
num = nm_setting_vlan_get_num_priorities (s_vlan, NM_VLAN_EGRESS_MAP);
for (i = 0; i < num; i++) {
if (nm_setting_vlan_get_priority (s_vlan, NM_VLAN_EGRESS_MAP, i, &from, &to)) {
if (rtnl_link_vlan_set_egress_map (new_link, from, to))
goto error_new_link;
}
}
rtnl_link_put (new_link);
return TRUE;
error_new_link:
rtnl_link_put (new_link);
/* fall through */
error:
if (created)
nm_system_iface_compat_rem_vlan_device (iface);
return FALSE;
}
/**
* nm_system_add_vlan_iface:
* @connection: the #NMConnection that describes the VLAN interface
* @iface: the interface name of the new VLAN interface
* @parent_ifindex: the interface index of the new VLAN interface's master
* interface
*
* Add a VLAN device named @iface and specified in @connection.
*
* Returns: %TRUE on success, %FALSE on failure
*/
gboolean
nm_system_add_vlan_iface (NMConnection *connection,
const char *iface,
int parent_ifindex)
{
NMSettingVlan *s_vlan;
int ret = -1;
struct rtnl_link *new_link = NULL;
struct nl_sock *nlh = NULL;
guint32 vlan_id = 0;
guint32 vlan_flags = 0;
guint32 num, i, from, to;
g_return_val_if_fail (parent_ifindex > 0, FALSE);
nlh = nm_netlink_get_default_handle ();
g_return_val_if_fail (nlh != NULL, FALSE);
s_vlan = nm_connection_get_setting_vlan (connection);
g_return_val_if_fail (s_vlan, FALSE);
vlan_id = nm_setting_vlan_get_id (s_vlan);
if (!iface) {
iface = nm_connection_get_virtual_iface_name (connection);
g_return_val_if_fail (iface != NULL, FALSE);
}
new_link = rtnl_link_alloc ();
if (!new_link) {
g_warn_if_fail (new_link != NULL);
goto out;
}
ret = rtnl_link_set_type (new_link, "vlan");
if (ret == -NLE_OPNOTSUPP) {
/*
* There is no linbl3, try ioctl.
*/
ret = -1;
if (nm_system_iface_compat_add_vlan (connection, iface, parent_ifindex))
ret = 0;
goto out;
}
rtnl_link_set_link (new_link, parent_ifindex);
rtnl_link_set_name (new_link, iface);
rtnl_link_vlan_set_id (new_link, vlan_id);
vlan_flags = nm_setting_vlan_get_flags (s_vlan);
if (vlan_flags) {
guint kernel_flags = 0;
if (vlan_flags & NM_VLAN_FLAG_REORDER_HEADERS)
kernel_flags |= VLAN_FLAG_REORDER_HDR;
if (vlan_flags & NM_VLAN_FLAG_GVRP)
kernel_flags |= VLAN_FLAG_GVRP;
if (vlan_flags & NM_VLAN_FLAG_LOOSE_BINDING)
kernel_flags |= VLAN_FLAG_LOOSE_BINDING;
rtnl_link_vlan_set_flags (new_link, kernel_flags);
}
num = nm_setting_vlan_get_num_priorities (s_vlan, NM_VLAN_INGRESS_MAP);
for (i = 0; i < num; i++) {
if (nm_setting_vlan_get_priority (s_vlan, NM_VLAN_INGRESS_MAP, i, &from, &to))
rtnl_link_vlan_set_ingress_map (new_link, (int) from, (int) to);
}
num = nm_setting_vlan_get_num_priorities (s_vlan, NM_VLAN_EGRESS_MAP);
for (i = 0; i < num; i++) {
if (nm_setting_vlan_get_priority (s_vlan, NM_VLAN_EGRESS_MAP, i, &from, &to))
rtnl_link_vlan_set_egress_map (new_link, (int) from, (int) to);
}
ret = rtnl_link_add (nlh, new_link, NLM_F_CREATE);
out:
if (new_link)
rtnl_link_put (new_link);
return (ret == 0);
}
/**
* nm_system_del_vlan_iface:
* @iface: the interface name
*
* Delete a VLAN interface specified by @iface.
*
* Returns: %TRUE on success, or %FALSE
*/
gboolean
nm_system_del_vlan_iface (const char *iface)
{
int ret = 0;
struct nl_sock *nlh = NULL;
struct nl_cache *cache = NULL;
struct rtnl_link *new_link = NULL;
int itype;
g_return_val_if_fail (iface != NULL, FALSE);
itype = nm_system_get_iface_type (-1, iface);
g_return_val_if_fail (itype == NM_IFACE_TYPE_VLAN, FALSE);
nlh = nm_netlink_get_default_handle ();
g_return_val_if_fail (nlh != NULL, FALSE);
ret = rtnl_link_alloc_cache (nlh, &cache);
g_return_val_if_fail (ret == 0, FALSE);
g_return_val_if_fail (cache != NULL, FALSE);
new_link = rtnl_link_get_by_name (cache, iface);
if (new_link) {
ret = rtnl_link_delete (nlh, new_link);
if (ret == -NLE_OPNOTSUPP) {
/*
* There is no linbl3, try ioctl.
*/
ret = -1;
if (nm_system_iface_compat_rem_vlan_device (iface))
ret = 0;
}
}
rtnl_link_put (new_link);
nl_cache_free (cache);
return (ret == 0) ? TRUE : FALSE;
}
static int
_bridge_create_compat (const char *iface)
{
int ret = 0, fd;
if ((fd = socket (AF_LOCAL, SOCK_STREAM, 0)) < 0) {
nm_log_err (LOGD_DEVICE, "couldn't open control socket.");
return -EBADF;
}
if (ioctl (fd, SIOCBRADDBR, iface) < 0)
ret = -errno;
close (fd);
return ret;
}
/**
* nm_system_create_bridge:
* @iface: Name bridging device to create
*
* Creates a new bridging device in the kernel. If a bridging device with
* the specified name already exists, it is being reused.
*
* Returns: %TRUE on success, %FALSE on error.
*/
gboolean
nm_system_create_bridge (const char *iface)
{
int err;
/* FIXME: use netlink */
err = _bridge_create_compat (iface);
if (err < 0 && err != -EEXIST) {
nm_log_err (LOGD_DEVICE, "(%s): error while adding bridge: %s",
iface, strerror (-err));
return FALSE;
}
return TRUE;
}
static int
_bridge_del_compat (const char *iface)
{
int ret = 0, fd;
if ((fd = socket (AF_LOCAL, SOCK_STREAM, 0)) < 0) {
nm_log_err (LOGD_DEVICE, "couldn't open control socket.");
return -EBADF;
}
if (ioctl (fd, SIOCBRDELBR, iface) < 0)
ret = -errno;
close (fd);
return ret;
}
/**
* nm_system_del_bridge:
* @iface: Name of bridging device to delete
*
* Deletes the specified bridging device in the kernel.
*
* Returns: %TRUE on success, %FALSE on error.
*/
gboolean
nm_system_del_bridge (const char *iface)
{
int err;
/* FIXME: use netlink */
err = _bridge_del_compat (iface);
if (err < 0 && err != -ENXIO) {
nm_log_err (LOGD_DEVICE, "(%s): error while deleting bridge: %s ",
iface, strerror (-err));
return FALSE;
}
return TRUE;
}
static int
_bridge_attach_compat (int master_ifindex,
const char *master_iface,
int slave_ifindex,
const char *slave_iface)
{
int ret = 0, fd;
struct ifreq ifr;
if ((fd = socket (AF_LOCAL, SOCK_STREAM, 0)) < 0) {
nm_log_err (LOGD_DEVICE, "couldn't open control socket.");
return -EBADF;
}
memset (&ifr, 0, sizeof (ifr));
strncpy (ifr.ifr_name, master_iface, IFNAMSIZ);
ifr.ifr_ifindex = slave_ifindex;
if (ioctl (fd, SIOCBRADDIF, &ifr) < 0)
ret = -errno;
close (fd);
return ret;
}
static int
_bridge_detach_compat (int master_ifindex,
const char *master_iface,
int slave_ifindex,
const char *slave_iface)
{
int ret = 0, fd;
struct ifreq ifr;
if ((fd = socket (AF_LOCAL, SOCK_STREAM, 0)) < 0) {
nm_log_err (LOGD_DEVICE, "couldn't open control socket.");
return -EBADF;
}
memset (&ifr, 0, sizeof(ifr));
strncpy (ifr.ifr_name, master_iface, IFNAMSIZ);
ifr.ifr_ifindex = slave_ifindex;
if (ioctl (fd, SIOCBRDELIF, &ifr) < 0)
ret = -errno;
close (fd);
return ret;
}
/**
* nm_system_bridge_attach:
* @master_ifindex: master device interface index
* @master_iface: master device interface name
* @slave_ifindex: slave device interface index
* @slave_iface: slave device interface name
*
* Attaches interface 'slave' to bridge 'master'
*
* Returns: %TRUE on success, or %FALSE
*/
gboolean
nm_system_bridge_attach (int master_ifindex,
const char *master_iface,
int slave_ifindex,
const char *slave_iface)
{
char *mif = NULL, *sif = NULL;
int err = -1;
g_return_val_if_fail (master_ifindex >= 0, FALSE);
g_return_val_if_fail (slave_ifindex >= 0, FALSE);
if (!master_iface) {
mif = nm_netlink_index_to_iface (master_ifindex);
if (mif == NULL) {
nm_log_err (LOGD_DEVICE, "interface name lookup failed for index %d", master_ifindex);
goto out;
}
}
if (!slave_ifindex) {
sif = nm_netlink_index_to_iface (slave_ifindex);
if (sif == NULL) {
nm_log_err (LOGD_DEVICE, "interface name lookup failed for index %d", slave_ifindex);
goto out;
}
}
/* FIXME: long term plan is to use netlink for this */
err = _bridge_attach_compat (master_ifindex,
mif ? mif : master_iface,
slave_ifindex,
sif ? sif : slave_iface);
if (err < 0 && err != -EBUSY) {
nm_log_err (LOGD_DEVICE, "(%s): failed to attach slave %s: %s",
master_iface, slave_iface, strerror (-err));
}
out:
g_free (sif);
g_free (mif);
return err == 0 ? TRUE : FALSE;
}
/**
* nm_system_bridge_detach:
* @master_ifindex: master device interface index
* @master_iface: master device interface name
* @slave_ifindex: slave device interface index
* @slave_iface: slave device interface name
*
* Detaches the interface 'slave' from the bridge 'master'.
*
* Returns: %TRUE on success, or %FALSE
*/
gboolean
nm_system_bridge_detach (int master_ifindex,
const char *master_iface,
int slave_ifindex,
const char *slave_iface)
{
char *mif = NULL, *sif = NULL;
int err = -1;
g_return_val_if_fail (master_ifindex >= 0, FALSE);
g_return_val_if_fail (slave_ifindex >= 0, FALSE);
if (!master_iface) {
mif = nm_netlink_index_to_iface (master_ifindex);
if (mif == NULL) {
nm_log_err (LOGD_DEVICE, "interface name lookup failed for index %d", master_ifindex);
goto out;
}
}
if (!slave_ifindex) {
sif = nm_netlink_index_to_iface (slave_ifindex);
if (sif == NULL) {
nm_log_err (LOGD_DEVICE, "interface name lookup failed for index %d", slave_ifindex);
goto out;
}
}
/* FIXME: long term plan is to use netlink for this */
err = _bridge_detach_compat (master_ifindex,
mif ? mif : master_iface,
slave_ifindex,
sif ? sif : slave_iface);
/* Kernel doesn't return an error detaching an already-detached interface */
if (err < 0) {
nm_log_err (LOGD_DEVICE, "(%s): failed to detach slave %s: %s",
master_iface, slave_iface, strerror (-err));
}
out:
g_free (mif);
g_free (sif);
return err == 0 ? TRUE : FALSE;
}
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