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ifconfig.c
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ifconfig.c
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/*
* Things to do when bringing an interface up or down
*
* Copyright (C) 2009-2012 Olaf Kirch <okir@suse.de>
*
* Link layer:
* - handle ethtool options
* - set device MTU
* - set link layer addr
* - set other LL options
* - bring up link layer
*/
#ifdef HAVE_CONFIG_H
#include "config.h"
#endif
#include <string.h>
#include <stdlib.h>
#include <unistd.h>
#include <errno.h>
#include <sys/socket.h>
#include <net/if.h>
#include <net/if_arp.h>
#include <netinet/ip.h>
#include <netlink/msg.h>
#include <netlink/errno.h>
#include <time.h>
#include <wicked/netinfo.h>
#include <wicked/route.h>
#include <wicked/addrconf.h>
#include <wicked/bridge.h>
#include <wicked/bonding.h>
#include <wicked/vlan.h>
#include <wicked/macvlan.h>
#include <wicked/system.h>
#include <wicked/wireless.h>
#include <wicked/infiniband.h>
#include <wicked/tuntap.h>
#include <wicked/ppp.h>
#include <wicked/ipv4.h>
#include <wicked/ipv6.h>
#include <wicked/lldp.h>
#include <wicked/tunneling.h>
#if defined(HAVE_RTA_MARK)
# include <netlink/netlink.h>
#elif defined(HAVE_LINUX_RTNETLINK_H) && defined(HAVE_LINUX_RTA_MARK)
# include <linux/rtnetlink.h>
# define HAVE_RTA_MARK HAVE_LINUX_RTA_MARK
#endif
#if defined(HAVE_IFLA_VLAN_PROTOCOL)
# ifndef ETH_P_8021Q
# define ETH_P_8021Q 0x8100
# endif
# ifndef ETH_P_8021AD
# define ETH_P_8021AD 0x88A8
# endif
#endif
#if !defined(MACVLAN_FLAG_NOPROMISC)
# if defined(HAVE_MACVLAN_FLAG_NOPROMISC)
# include <linux/if_link.h>
# else
# include "linux/if_link.h"
# endif
#endif
#include <linux/if_tunnel.h>
#include "netinfo_priv.h"
#include "util_priv.h"
#include "sysfs.h"
#include "kernel.h"
#include "appconfig.h"
#include "process.h"
#include "debug.h"
#include "modprobe.h"
#ifndef SIT_TUNNEL_MODULE_NAME
#define SIT_TUNNEL_MODULE_NAME "sit"
#endif
#ifndef GRE_TUNNEL_MODULE_NAME
#define GRE_TUNNEL_MODULE_NAME "ip_gre"
#endif
#ifndef IPIP_TUNNEL_MODULE_NAME
#define IPIP_TUNNEL_MODULE_NAME "ipip"
#endif
#ifndef TUNNEL4_MODULE_NAME
#define TUNNEL4_MODULE_NAME "tunnel4"
#endif
static int __ni_netdev_update_addrs(ni_netdev_t *dev,
const ni_addrconf_lease_t *old_lease,
ni_addrconf_lease_t *new_lease);
static int __ni_netdev_update_routes(ni_netconfig_t *nc, ni_netdev_t *dev,
const ni_addrconf_lease_t *old_lease,
ni_addrconf_lease_t *new_lease);
static int __ni_netdev_update_mtu(ni_netconfig_t *nc, ni_netdev_t *dev,
const ni_addrconf_lease_t *old_lease,
ni_addrconf_lease_t *new_lease);
static int __ni_rtnl_link_create(const ni_netdev_t *cfg);
static int __ni_rtnl_link_change(ni_netdev_t *dev, const ni_netdev_t *cfg);
static int __ni_rtnl_link_change_mtu(ni_netdev_t *dev, unsigned int mtu);
static int __ni_rtnl_link_change_hwaddr(ni_netdev_t *dev, const ni_hwaddr_t *hwaddr);
static int __ni_rtnl_link_up(const ni_netdev_t *, const ni_netdev_req_t *);
static int __ni_rtnl_link_down(const ni_netdev_t *);
static int __ni_rtnl_link_delete(const ni_netdev_t *);
static int __ni_rtnl_link_add_port_up(const ni_netdev_t *, const char *, unsigned int);
static int __ni_rtnl_link_add_slave_down(const ni_netdev_t *, const char *, unsigned int);
static int __ni_rtnl_send_deladdr(ni_netdev_t *, const ni_address_t *);
static int __ni_rtnl_send_newaddr(ni_netdev_t *, const ni_address_t *, int);
static int __ni_rtnl_send_delroute(ni_netdev_t *, ni_route_t *);
static int __ni_rtnl_send_newroute(ni_netdev_t *, ni_route_t *, int);
static int __ni_system_netdev_create(ni_netconfig_t *nc,
const char *ifname, unsigned int ifindex,
ni_iftype_t iftype, ni_netdev_t **dev_ret);
static int
ni_system_interface_enslave(ni_netdev_t *master, ni_netdev_t *dev)
{
int ret = -1;
if (!master || !dev)
return -1;
if (dev->link.masterdev.index) {
if (dev->link.masterdev.index == master->link.ifindex) {
ni_debug_ifconfig("%s: already enslaved into %s[#%u]",
dev->name, dev->link.masterdev.name,
dev->link.masterdev.index);
return 0;
} else {
ni_error("%s: already enslaved into %s[#%u]",
dev->name, dev->link.masterdev.name,
dev->link.masterdev.index);
return -1;
}
}
switch (master->link.type) {
case NI_IFTYPE_BOND:
ret = __ni_rtnl_link_add_slave_down(dev, master->name,
master->link.ifindex);
if (ret == 0) {
ni_netdev_ref_set(&dev->link.masterdev,
master->name, master->link.ifindex);
}
case NI_IFTYPE_BRIDGE:
ret = __ni_rtnl_link_add_port_up(dev, master->name,
master->link.ifindex);
if (ret == 0) {
ni_netdev_ref_set(&dev->link.masterdev,
master->name, master->link.ifindex);
}
default:
break;
}
return ret;
}
int
ni_system_interface_link_change(ni_netdev_t *dev, const ni_netdev_req_t *ifp_req)
{
ni_netconfig_t *nc = ni_global_state_handle(0);
ni_netdev_t *master;
unsigned int ifflags;
if (dev == NULL)
return -NI_ERROR_INVALID_ARGS;
ni_debug_ifconfig("%s(%s)", __func__, dev->name);
/* FIXME: perform sanity check on configuration data */
ifflags = ifp_req? ifp_req->ifflags : 0;
if (ifflags & (NI_IFF_DEVICE_UP|NI_IFF_LINK_UP|NI_IFF_NETWORK_UP)) {
/*
* master manages the link of a slave, redirect to enslave
* when there is a master set.
*/
if (dev->link.masterdev.index) {
if (!dev->link.masterdev.name)
ni_netdev_ref_bind_ifname(&dev->link.masterdev, nc);
ni_debug_ifconfig("%s: already enslaved in master %s[#%u] -- skipping linkUp",
dev->name, dev->link.masterdev.name ?
dev->link.masterdev.name : "",
dev->link.masterdev.index);
return 0;
}
/* config lookup for master and redirect to master's enslave */
if (ifp_req && !ni_string_empty(ifp_req->master.name)) {
master = ni_netdev_by_name(nc, ifp_req->master.name);
return ni_system_interface_enslave(master, dev);
}
ni_debug_ifconfig("bringing up %s", dev->name);
if (__ni_rtnl_link_up(dev, ifp_req)) {
ni_error("%s: failed to bring up interface (rtnl error)",
dev->name);
return -1;
}
if (dev->link.type == NI_IFTYPE_WIRELESS)
ni_wireless_connect(dev);
} else {
/* FIXME: Shut down any addrconf services on this interface?
* We should expect these services to detect the link down event...
*/
if (dev->link.type == NI_IFTYPE_WIRELESS)
ni_wireless_disconnect(dev);
/* If an LLDP agent is active for this interface, shut it down, too */
ni_system_lldp_down(dev);
/* Now take down the link for real */
ni_debug_ifconfig("shutting down interface %s", dev->name);
if (__ni_rtnl_link_down(dev)) {
ni_error("unable to shut down interface %s", dev->name);
return -1;
}
/* link is down, remove all addrs and routes */
__ni_system_interface_flush_addrs(NULL, dev);
__ni_system_interface_flush_routes(NULL, dev);
}
/* TODO: still needed? */
__ni_global_seqno++;
return 0;
}
int
__ni_system_interface_flush_addrs(ni_netconfig_t *nc, ni_netdev_t *dev)
{
ni_address_t *ap;
if (!dev || (!nc && !(nc = ni_global_state_handle(0))))
return -1;
/* TODO: ni_rtnl_query_addr_info + del without to parse */
__ni_system_refresh_interface_addrs(nc, dev);
for (ap = dev->addrs; ap; ap = ap->next) {
__ni_rtnl_send_deladdr(dev, ap);
}
__ni_system_refresh_interface_addrs(nc, dev);
return dev->addrs == NULL ? 0 : 1;
}
int
__ni_system_interface_flush_routes(ni_netconfig_t *nc, ni_netdev_t *dev)
{
ni_route_table_t *tab;
ni_route_t *rp;
unsigned int i;
if (!dev || (!nc && !(nc = ni_global_state_handle(0))))
return -1;
/* TODO: ni_rtnl_query_route_info + del without to parse */
__ni_system_refresh_interface_routes(nc, dev);
for (tab = dev->routes; tab; tab = tab->next) {
for (i = 0; i < tab->routes.count; ++i) {
if (!(rp = tab->routes.data[i]))
continue;
__ni_rtnl_send_delroute(dev, rp);
}
}
__ni_system_refresh_interface_routes(nc, dev);
return dev->routes == NULL ? 0 : 1;
}
int
ni_system_interface_link_monitor(ni_netdev_t *dev)
{
int rv;
if (dev == NULL)
return -NI_ERROR_INVALID_ARGS;
ni_debug_ifconfig("%s(%s)", __func__, dev->name);
if ((rv = __ni_rtnl_link_up(dev, NULL)) < 0) {
ni_error("%s: failed to bring up interface (rtnl error)", dev->name);
return rv;
}
if (dev->link.type == NI_IFTYPE_WIRELESS
&& (rv = ni_wireless_interface_set_scanning(dev, TRUE)) < 0) {
/* Take it down again? */
return rv;
}
return 0;
}
/*
* system interface lease updater actions
*/
static int
__ni_addrconf_action_mtu_apply(ni_netdev_t *dev, ni_addrconf_lease_t *lease)
{
ni_netconfig_t *nc = ni_global_state_handle(0);
__ni_netdev_update_mtu(nc, dev, lease->old, lease);
/* On failure, error is logged already -- do not abort:
* there is still pmtu done if mtu was smaller,
* not applying jumbo MTU is also not critical.
*/
return 0;
}
static int
__ni_addrconf_action_addrs_apply(ni_netdev_t *dev, ni_addrconf_lease_t *lease)
{
int res;
if ((res = __ni_netdev_update_addrs(dev, lease->old, lease)) < 0)
return res;
return 0;
}
static int
__ni_addrconf_action_addrs_verify_check(ni_netdev_t *dev, ni_addrconf_lease_t *lease)
{
ni_address_t *ap;
if (lease->family != AF_INET6)
return 0;
/*
* returns:
* 1 if lease or link-local addresses are still tentative and
* 0 they're not tentative any more
* -1 if they're duplicate.
*/
for (ap = dev->addrs; ap; ap = ap->next) {
if (ap->family != AF_INET6)
continue;
if (ap->owner == NI_ADDRCONF_NONE) {
if (!ni_address_list_find(lease->addrs, &ap->local_addr)
&& !ni_address_is_linklocal(ap))
continue;
} else
if (ap->owner != lease->type)
continue;
if (ni_address_is_duplicate(ap)) {
ni_warn("%s: lease %s:%s address %s is duplicate",
dev->name,
ni_addrfamily_type_to_name(lease->family),
ni_addrconf_type_to_name(lease->type),
ni_sockaddr_print(&ap->local_addr));
/*
* DHCPv6 monitors dad state and declines automatically
*/
if (lease->type != NI_ADDRCONF_DHCP)
lease->state = NI_ADDRCONF_STATE_REQUESTING;
else
lease->state = NI_ADDRCONF_STATE_FAILED;
return -1; /* abort */
} else
if (ni_address_is_tentative(ap)) {
ni_debug_verbose(NI_LOG_DEBUG, NI_TRACE_IFCONFIG,
"%s: lease %s:%s address %s is tentative",
dev->name,
ni_addrfamily_type_to_name(lease->family),
ni_addrconf_type_to_name(lease->type),
ni_sockaddr_print(&ap->local_addr));
return 1; /* defer */
}
}
return 0;
}
static int
__ni_addrconf_action_addrs_verify(ni_netdev_t *dev, ni_addrconf_lease_t *lease)
{
ni_netconfig_t *nc = ni_global_state_handle(0);
unsigned int loops = 50;
int res;
/*
* TODO: instead to loop here, return 1 to go into background
* and continue to apply when address update event with
* the final tentative/dadfailed flags arrived.
*/
do {
if ((res = __ni_system_refresh_interface_addrs(nc, dev)) < 0)
return res;
if ((res = __ni_addrconf_action_addrs_verify_check(dev, lease)) <= 0)
return res;
usleep(250000);
} while (res && loops-- > 0);
return 0;
}
static int
__ni_addrconf_action_routes_apply(ni_netdev_t *dev, ni_addrconf_lease_t *lease)
{
ni_netconfig_t *nc = ni_global_state_handle(0);
int res;
if ((res = __ni_system_refresh_interface_routes(nc, dev)) < 0)
return res;
if ((res = __ni_netdev_update_routes(nc, dev, lease->old, lease)) < 0)
return res;
if ((res = __ni_system_refresh_interface_routes(nc, dev)) < 0)
return res;
return 0;
}
static int
__ni_addrconf_action_system_update(ni_netdev_t *dev, ni_addrconf_lease_t *lease)
{
lease->update &= ni_config_addrconf_update_mask(lease->type, lease->family);
ni_system_update_from_lease(lease, dev->link.ifindex, dev->name);
return 0;
}
static int
__ni_addrconf_action_addrs_remove(ni_netdev_t *dev, ni_addrconf_lease_t *lease)
{
ni_netconfig_t *nc = ni_global_state_handle(0);
int res;
if ((res = __ni_netdev_update_addrs(dev, lease->old, NULL)) < 0)
return res;
if ((res = __ni_system_refresh_interface_addrs(nc, dev)) < 0)
return res;
return 0;
}
static int
__ni_addrconf_action_routes_remove(ni_netdev_t *dev, ni_addrconf_lease_t *lease)
{
ni_netconfig_t *nc = ni_global_state_handle(0);
int res;
if ((res = __ni_system_refresh_interface_routes(nc, dev)) < 0)
return res;
if ((res = __ni_netdev_update_routes(nc, dev, lease->old, NULL)) < 0)
return res;
if ((res = __ni_system_refresh_interface_routes(nc, dev)) < 0)
return res;
return 0;
}
static int
__ni_addrconf_action_mtu_restore(ni_netdev_t *dev, ni_addrconf_lease_t *lease)
{
ni_netconfig_t *nc = ni_global_state_handle(0);
__ni_netdev_update_mtu(nc, dev, lease->old, NULL);
/* On failure, error is logged already -- do not abort:
* there is still pmtu done if mtu was smaller,
* not applying jumbo MTU is also not critical.
*/
return 0;
}
typedef struct ni_addrconf_action ni_addrconf_action_t;
struct ni_addrconf_action {
int (*func)(ni_netdev_t *dev, ni_addrconf_lease_t *lease);
const char * info;
};
struct ni_addrconf_updater {
/* do we need some data here ? */
const ni_addrconf_action_t *action;
};
static const ni_addrconf_action_t __applying_actions[] = {
{ __ni_addrconf_action_mtu_apply, "adjusting mtu" },
{ __ni_addrconf_action_addrs_apply, "applying addresses" },
{ __ni_addrconf_action_addrs_verify, "verifying adressses" },
{ __ni_addrconf_action_routes_apply, "applying routes" },
{ __ni_addrconf_action_system_update, "applying system config"},
{ NULL, NULL }
};
static const ni_addrconf_action_t __removing_actions[] = {
{ __ni_addrconf_action_addrs_remove, "removing addresses" },
{ __ni_addrconf_action_routes_remove, "removing routes" },
{ __ni_addrconf_action_system_update, "removing system config"},
{ __ni_addrconf_action_mtu_restore, "reverting mtu change" },
{ NULL, NULL }
};
static ni_addrconf_updater_t *
ni_addrconf_updater_new(const ni_addrconf_action_t *action)
{
ni_addrconf_updater_t *updater;
updater = xcalloc(1, sizeof(*updater));
updater->action = action;
return updater;
}
void
ni_addrconf_updater_free(ni_addrconf_updater_t **updater)
{
if (updater && *updater) {
free(*updater);
*updater = NULL;
}
}
int
ni_addrconf_updater_execute(ni_netdev_t *dev, ni_addrconf_lease_t *lease)
{
ni_addrconf_updater_t *updater;
int res = 0;
if (!dev || !lease)
return 0;
while ((updater = lease->updater) != NULL) {
if (!updater->action || !updater->action->func) {
ni_addrconf_updater_free(&lease->updater);
break;
}
/*
* res > 1 could be used to defer into bg,
* but currently we just wait for addrs
* and use success/failure codes only.
*/
res = updater->action->func(dev, lease);
if (updater->action->info) {
ni_debug_verbose(NI_LOG_DEBUG, NI_TRACE_IFCONFIG,
"%s: %s for %s:%s lease in state %s: %s [%u]",
dev->name, updater->action->info,
ni_addrfamily_type_to_name(lease->family),
ni_addrconf_type_to_name(lease->type),
ni_addrconf_state_to_name(lease->state),
(res < 0 ? "failed" : "success"), res);
}
if (res)
break;
updater->action++;
}
return res;
}
/*
* An address configuration agent sends a lease update.
*/
int
__ni_system_interface_update_lease(ni_netdev_t *dev, ni_addrconf_lease_t **lease_p)
{
ni_addrconf_lease_t *lease = *lease_p;
int res;
ni_debug_ifconfig("%s: received %s:%s lease update in state %s",
dev->name,
ni_addrfamily_type_to_name(lease->family),
ni_addrconf_type_to_name(lease->type),
ni_addrconf_state_to_name(lease->state));
/* Use the existing lease handle to identify those addresses already
* owned by this addrconf protocol.
* While we're getting the old lease, detach it from the interface
* (but don't delete it yet).
*/
lease->old = __ni_netdev_find_lease(dev, lease->family, lease->type, 1);
if (lease->old) {
ni_addrconf_updater_free(&lease->old->updater);
}
if (lease->state == NI_ADDRCONF_STATE_GRANTED) {
/* lease apply on ifup success/update */
lease->state = NI_ADDRCONF_STATE_APPLYING;
ni_netdev_set_lease(dev, lease);
*lease_p = NULL;
lease->updater = ni_addrconf_updater_new(__applying_actions);
res = ni_addrconf_updater_execute(dev, lease);
/* we do not need the old lease any more */
if (lease->old) {
ni_addrconf_lease_free(lease->old);
lease->old = NULL;
}
if (res == 0 && lease->state == NI_ADDRCONF_STATE_APPLYING)
lease->state = NI_ADDRCONF_STATE_GRANTED;
} else
if (lease->state == NI_ADDRCONF_STATE_FAILED) {
/* lease drop on ifup failure */
ni_netdev_set_lease(dev, lease);
*lease_p = NULL;
/* there is an (empty) old lease in requesting state
* or even in granted when e.g. dhcp rebind fails...
* if not, we have nothing what we could revert.
*/
if (lease->old) {
lease->updater = ni_addrconf_updater_new(__removing_actions);
res = ni_addrconf_updater_execute(dev, lease);
/* we do not need the old lease any more */
ni_addrconf_lease_free(lease->old);
lease->old = NULL;
}
res = 0; /* any reason to fail? */
lease->state = NI_ADDRCONF_STATE_FAILED;
} else {
/* lease drop on ifdown */
if (lease->old) {
lease->updater = ni_addrconf_updater_new(__removing_actions);
ni_addrconf_updater_execute(dev, lease);
}
/*
* we were unable to update the system properly -- is there
* any reason to fail or to not drop the lease?
*/
res = 0;
}
/* we do not defer updater into background yet */
ni_addrconf_updater_free(&lease->updater);
if (res < 0) {
ni_error("%s: error updating interface config from %s:%s lease",
dev->name,
ni_addrfamily_type_to_name(lease->family),
ni_addrconf_type_to_name(lease->type));
}
return res;
}
/*
* Delete the given interface
* ni_system_interface_delete
*/
int
ni_system_interface_delete(ni_netconfig_t *nc, const char *ifname)
{
ni_netdev_t *dev;
ni_debug_ifconfig("ni_system_interface_delete(%s)", ifname);
/* FIXME: perform sanity check on configuration data */
dev = ni_netdev_by_name(nc, ifname);
if (dev == NULL) {
ni_error("cannot delete interface %s - not known", ifname);
return -1;
}
switch (dev->link.type) {
case NI_IFTYPE_LOOPBACK:
case NI_IFTYPE_ETHERNET:
case NI_IFTYPE_WIRELESS:
case NI_IFTYPE_INFINIBAND:
ni_error("cannot destroy %s interfaces", ni_linktype_type_to_name(dev->link.type));
return -1;
case NI_IFTYPE_INFINIBAND_CHILD:
if (ni_system_infiniband_child_delete(dev) < 0)
return -1;
break;
case NI_IFTYPE_DUMMY:
case NI_IFTYPE_VLAN:
case NI_IFTYPE_MACVLAN:
case NI_IFTYPE_MACVTAP:
case NI_IFTYPE_TUN:
case NI_IFTYPE_TAP:
if (__ni_rtnl_link_delete(dev)) {
ni_error("could not destroy %s interface %s",
ni_linktype_type_to_name(dev->link.type), dev->name);
return -1;
}
break;
case NI_IFTYPE_BRIDGE:
if (__ni_brioctl_del_bridge(dev->name) < 0) {
ni_error("could not destroy bridge interface %s", dev->name);
return -1;
}
break;
case NI_IFTYPE_BOND:
if (ni_sysfs_bonding_delete_master(dev->name) < 0) {
ni_error("could not destroy bonding interface %s", dev->name);
return -1;
}
break;
default:
ni_error("%s not implemented for link type %u (%s)",
__func__, dev->link.type,
ni_linktype_type_to_name(dev->link.type));
return -1;
}
ni_client_state_drop(dev->link.ifindex);
return 0;
}
/*
* Create a VLAN interface
*/
int
ni_system_vlan_create(ni_netconfig_t *nc, const ni_netdev_t *cfg,
ni_netdev_t **dev_ret)
{
ni_netdev_t *dev;
if (!nc || !dev_ret || !cfg || !cfg->name || !cfg->vlan
|| !cfg->link.lowerdev.name || !cfg->link.lowerdev.index)
return -1;
*dev_ret = NULL;
dev = ni_netdev_by_vlan_name_and_tag(nc, cfg->link.lowerdev.name, cfg->vlan->tag);
if (dev != NULL) {
/* This is not necessarily an error */
*dev_ret = dev;
return -NI_ERROR_DEVICE_EXISTS;
}
ni_debug_ifconfig("%s: creating VLAN device", cfg->name);
if (__ni_rtnl_link_create(cfg)) {
ni_error("unable to create vlan interface %s", cfg->name);
return -1;
}
return __ni_system_netdev_create(nc, cfg->name, 0, NI_IFTYPE_VLAN, dev_ret);
}
int
ni_system_vlan_change(ni_netconfig_t *nc, ni_netdev_t *dev, const ni_netdev_t *cfg)
{
return __ni_rtnl_link_change(dev, cfg);
}
int
ni_system_macvlan_change(ni_netconfig_t *nc, ni_netdev_t *dev, const ni_netdev_t *cfg)
{
return __ni_rtnl_link_change(dev, cfg);
}
/*
* Delete a VLAN interface
*/
int
ni_system_vlan_delete(ni_netdev_t *dev)
{
if (__ni_rtnl_link_delete(dev)) {
ni_error("could not destroy VLAN interface %s", dev->name);
return -1;
}
return 0;
}
/*
* Create a macvlan/macvtap interface
*/
int
ni_system_macvlan_create(ni_netconfig_t *nc, const ni_netdev_t *cfg,
ni_netdev_t **dev_ret)
{
ni_netdev_t *dev;
const char *cfg_iftype = NULL;
if (!nc || !dev_ret || !cfg || !cfg->name || !cfg->macvlan
|| !cfg->link.lowerdev.name || !cfg->link.lowerdev.index)
return -1;
*dev_ret = NULL;
dev = ni_netdev_by_name(nc, cfg->name);
if (dev != NULL) {
const char *dev_iftype = ni_linktype_type_to_name(dev->link.type);
/* This is not necessarily an error */
if (dev->link.type == cfg->link.type) {
ni_debug_ifconfig("A %s interface %s already exists",
dev_iftype, dev->name);
*dev_ret = dev;
} else {
ni_error("A %s interface with the name %s already exists",
dev_iftype, dev->name);
}
return -NI_ERROR_DEVICE_EXISTS;
}
cfg_iftype = ni_linktype_type_to_name(cfg->link.type);
ni_debug_ifconfig("%s: creating %s interface", cfg->name, cfg_iftype);
if (__ni_rtnl_link_create(cfg)) {
ni_error("unable to create %s interface %s",
cfg_iftype, cfg->name);
return -1;
}
return __ni_system_netdev_create(nc, cfg->name, 0, cfg->link.type, dev_ret);
}
/*
* Delete a macvlan/macvtap interface
*/
int
ni_system_macvlan_delete(ni_netdev_t *dev)
{
if (__ni_rtnl_link_delete(dev)) {
ni_error("could not destroy macvlan interface %s", dev->name);
return -1;
}
return 0;
}
/*
* Create a dummy interface
*/
int
ni_system_dummy_create(ni_netconfig_t *nc, const ni_netdev_t *cfg,
ni_netdev_t **dev_ret)
{
ni_netdev_t *dev;
int err;
if (!nc || !dev_ret || !cfg || !cfg->name)
return -1;
*dev_ret = NULL;
dev = ni_netdev_by_name(nc, cfg->name);
if (dev != NULL) {
/* This is not necessarily an error */
if (dev->link.type == NI_IFTYPE_DUMMY) {
ni_debug_ifconfig("A dummy interface %s already exists",
dev->name);
*dev_ret = dev;
} else {
ni_error("A %s interface with the name %s already exists",
ni_linktype_type_to_name(dev->link.type), dev->name);
}
return -NI_ERROR_DEVICE_EXISTS;
}
ni_debug_ifconfig("%s: creating dummy interface", cfg->name);
if ((err = __ni_rtnl_link_create(cfg)) && abs(err) != NLE_EXIST) {
ni_error("unable to create dummy interface %s", cfg->name);
return -1;
}
return __ni_system_netdev_create(nc, cfg->name, 0, NI_IFTYPE_DUMMY, dev_ret);
}
int
ni_system_dummy_change(ni_netconfig_t *nc, ni_netdev_t *dev, const ni_netdev_t *cfg)
{
return __ni_rtnl_link_change(dev, cfg);
}
/*
* Delete a dummy interface
*/
int
ni_system_dummy_delete(ni_netdev_t *dev)
{
if (__ni_rtnl_link_delete(dev)) {
ni_error("could not destroy dummy interface %s", dev->name);
return -1;
}
return 0;
}
/*
* Setup infiniband interface
*/
int
__ni_system_infiniband_setup(const char *ifname, unsigned int mode, unsigned int umcast)
{
const char *mstr = ni_infiniband_get_mode_name(mode);
int ret = 0;
if (mstr &&
ni_sysfs_netif_put_string(ifname, "mode", mstr) < 0) {
ni_error("%s: Cannot set infiniband IPoIB connection-mode '%s'",
ifname, mstr);
ret = -1;
}
if ((umcast == 0 || umcast == 1) &&
ni_sysfs_netif_put_uint(ifname, "umcast", umcast) < 0) {
ni_error("%s: Cannot set infiniband IPoIB user-multicast '%s' (%u)",
ifname, ni_infiniband_get_umcast_name(umcast), umcast);
ret = -1;
}
return ret;
}
int
ni_system_infiniband_setup(ni_netconfig_t *nc, ni_netdev_t *dev,
const ni_netdev_t *cfg)
{
ni_infiniband_t *ib;
if (!cfg || !(ib = cfg->infiniband)) {
ni_error("Cannot setup infiniband interface without config");
return -1;
}
if (!dev || !dev->name) {
ni_error("Cannot setup infiniband interface without name");
return -1;
}
if (dev->link.type != NI_IFTYPE_INFINIBAND &&
dev->link.type != NI_IFTYPE_INFINIBAND_CHILD) {
ni_error("%s: %s is not infiniband interface", __func__, dev->name);
return -1;
}
return __ni_system_infiniband_setup(dev->name, ib->mode, ib->umcast);
}
/*
* Create infinband child interface
*/
int
ni_system_infiniband_child_create(ni_netconfig_t *nc,
const ni_netdev_t *cfg, ni_netdev_t **dev_ret)
{
ni_infiniband_t *ib;
unsigned int i, success = 0;
char *tmpname = NULL;
if (!cfg || ni_string_empty(cfg->name) || !(ib = cfg->infiniband)) {
ni_error("Cannot create infiniband child interface without config");
return -1;
}
if (ni_string_empty(cfg->link.lowerdev.name)) {
ni_error("%s: Invalid parent reference in infiniband child config",
cfg->name);
return -1;
}
if (!ni_string_printf(&tmpname, "%s.%04x", cfg->link.lowerdev.name, ib->pkey)) {
ni_error("%s: Unable to construct temporary interface name", cfg->name);
return -1;
}
if (ni_sysfs_netif_printf(cfg->link.lowerdev.name, "create_child", "0x%04x", ib->pkey) < 0) {
ni_error("%s: Cannot create infiniband child interface", cfg->name);
ni_string_free(&tmpname);
return -1;
}
/* TODO: Avoid to wait for interface to appear ...
* but we need it for object path in factory.
*/
for (i = 0; i < 400; ++i) {
if (!ni_sysfs_netif_exists(tmpname, "ifindex"))
usleep(25000);
success = 1;
break;
}
if (!success) {
ni_error("%s: Infiniband child %s did not appear after 10 sec",
cfg->name, tmpname);
ni_string_free(&tmpname);
return -1;
} else
/* rename just returns when the name equals */
if (__ni_netdev_rename(tmpname, cfg->name) < 0) {
/* error reported */
ni_string_free(&tmpname);
return -1;
}
ni_string_free(&tmpname);