* Vitaly E. Lavrov RTA_OK arithmetics was wrong.
*/
-#include <linux/config.h>
#include <linux/errno.h>
#include <linux/module.h>
#include <linux/types.h>
#include <linux/skbuff.h>
#include <linux/init.h>
#include <linux/security.h>
+#include <linux/mutex.h>
+#include <linux/if_addr.h>
+#include <linux/vs_context.h> /* remove with NXF_HIDE_NETIF */
#include <asm/uaccess.h>
#include <asm/system.h>
#include <net/udp.h>
#include <net/sock.h>
#include <net/pkt_sched.h>
+#include <net/fib_rules.h>
#include <net/netlink.h>
+#ifdef CONFIG_NET_WIRELESS_RTNETLINK
+#include <linux/wireless.h>
+#include <net/iw_handler.h>
+#endif /* CONFIG_NET_WIRELESS_RTNETLINK */
-DECLARE_MUTEX(rtnl_sem);
+static DEFINE_MUTEX(rtnl_mutex);
+static struct sock *rtnl;
void rtnl_lock(void)
{
- rtnl_shlock();
+ mutex_lock(&rtnl_mutex);
}
-int rtnl_lock_interruptible(void)
+void __rtnl_unlock(void)
{
- return down_interruptible(&rtnl_sem);
+ mutex_unlock(&rtnl_mutex);
}
-
+
void rtnl_unlock(void)
{
- rtnl_shunlock();
-
+ mutex_unlock(&rtnl_mutex);
+ if (rtnl && rtnl->sk_receive_queue.qlen)
+ rtnl->sk_data_ready(rtnl, 0);
netdev_run_todo();
}
+int rtnl_trylock(void)
+{
+ return mutex_trylock(&rtnl_mutex);
+}
+
int rtattr_parse(struct rtattr *tb[], int maxattr, struct rtattr *rta, int len)
{
memset(tb, 0, sizeof(struct rtattr*)*maxattr);
return 0;
}
-struct sock *rtnl;
-
struct rtnetlink_link * rtnetlink_links[NPROTO];
static const int rtm_min[RTM_NR_FAMILIES] =
[RTM_FAM(RTM_NEWLINK)] = NLMSG_LENGTH(sizeof(struct ifinfomsg)),
[RTM_FAM(RTM_NEWADDR)] = NLMSG_LENGTH(sizeof(struct ifaddrmsg)),
[RTM_FAM(RTM_NEWROUTE)] = NLMSG_LENGTH(sizeof(struct rtmsg)),
- [RTM_FAM(RTM_NEWNEIGH)] = NLMSG_LENGTH(sizeof(struct ndmsg)),
- [RTM_FAM(RTM_NEWRULE)] = NLMSG_LENGTH(sizeof(struct rtmsg)),
+ [RTM_FAM(RTM_NEWRULE)] = NLMSG_LENGTH(sizeof(struct fib_rule_hdr)),
[RTM_FAM(RTM_NEWQDISC)] = NLMSG_LENGTH(sizeof(struct tcmsg)),
[RTM_FAM(RTM_NEWTCLASS)] = NLMSG_LENGTH(sizeof(struct tcmsg)),
[RTM_FAM(RTM_NEWTFILTER)] = NLMSG_LENGTH(sizeof(struct tcmsg)),
[RTM_FAM(RTM_NEWACTION)] = NLMSG_LENGTH(sizeof(struct tcamsg)),
- [RTM_FAM(RTM_NEWPREFIX)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
[RTM_FAM(RTM_GETMULTICAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
[RTM_FAM(RTM_GETANYCAST)] = NLMSG_LENGTH(sizeof(struct rtgenmsg)),
- [RTM_FAM(RTM_NEWNEIGHTBL)] = NLMSG_LENGTH(sizeof(struct ndtmsg)),
};
static const int rta_max[RTM_NR_FAMILIES] =
[RTM_FAM(RTM_NEWLINK)] = IFLA_MAX,
[RTM_FAM(RTM_NEWADDR)] = IFA_MAX,
[RTM_FAM(RTM_NEWROUTE)] = RTA_MAX,
- [RTM_FAM(RTM_NEWNEIGH)] = NDA_MAX,
- [RTM_FAM(RTM_NEWRULE)] = RTA_MAX,
+ [RTM_FAM(RTM_NEWRULE)] = FRA_MAX,
[RTM_FAM(RTM_NEWQDISC)] = TCA_MAX,
[RTM_FAM(RTM_NEWTCLASS)] = TCA_MAX,
[RTM_FAM(RTM_NEWTFILTER)] = TCA_MAX,
[RTM_FAM(RTM_NEWACTION)] = TCAA_MAX,
- [RTM_FAM(RTM_NEWNEIGHTBL)] = NDTA_MAX,
};
void __rta_fill(struct sk_buff *skb, int attrtype, int attrlen, const void *data)
return err;
}
-int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics)
+int rtnl_unicast(struct sk_buff *skb, u32 pid)
{
- struct rtattr *mx = (struct rtattr*)skb->tail;
- int i;
+ return nlmsg_unicast(rtnl, skb, pid);
+}
- RTA_PUT(skb, RTA_METRICS, 0, NULL);
- for (i=0; i<RTAX_MAX; i++) {
- if (metrics[i])
- RTA_PUT(skb, i+1, sizeof(u32), metrics+i);
- }
- mx->rta_len = skb->tail - (u8*)mx;
- if (mx->rta_len == RTA_LENGTH(0))
- skb_trim(skb, (u8*)mx - skb->data);
- return 0;
+int rtnl_notify(struct sk_buff *skb, u32 pid, u32 group,
+ struct nlmsghdr *nlh, gfp_t flags)
+{
+ int report = 0;
-rtattr_failure:
- skb_trim(skb, (u8*)mx - skb->data);
- return -1;
+ if (nlh)
+ report = nlmsg_report(nlh);
+
+ return nlmsg_notify(rtnl, skb, pid, group, report, flags);
}
+void rtnl_set_sk_err(u32 group, int error)
+{
+ netlink_set_err(rtnl, 0, group, error);
+}
-static int rtnetlink_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
- int type, u32 pid, u32 seq, u32 change,
- unsigned int flags)
+int rtnetlink_put_metrics(struct sk_buff *skb, u32 *metrics)
{
- struct ifinfomsg *r;
- struct nlmsghdr *nlh;
- unsigned char *b = skb->tail;
+ struct nlattr *mx;
+ int i, valid = 0;
- nlh = NLMSG_NEW(skb, pid, seq, type, sizeof(*r), flags);
- r = NLMSG_DATA(nlh);
- r->ifi_family = AF_UNSPEC;
- r->__ifi_pad = 0;
- r->ifi_type = dev->type;
- r->ifi_index = dev->ifindex;
- r->ifi_flags = dev_get_flags(dev);
- r->ifi_change = change;
+ mx = nla_nest_start(skb, RTA_METRICS);
+ if (mx == NULL)
+ return -ENOBUFS;
- RTA_PUT(skb, IFLA_IFNAME, strlen(dev->name)+1, dev->name);
+ for (i = 0; i < RTAX_MAX; i++) {
+ if (metrics[i]) {
+ valid++;
+ NLA_PUT_U32(skb, i+1, metrics[i]);
+ }
+ }
- if (1) {
- u32 txqlen = dev->tx_queue_len;
- RTA_PUT(skb, IFLA_TXQLEN, sizeof(txqlen), &txqlen);
+ if (!valid) {
+ nla_nest_cancel(skb, mx);
+ return 0;
}
- if (1) {
- u32 weight = dev->weight;
- RTA_PUT(skb, IFLA_WEIGHT, sizeof(weight), &weight);
+ return nla_nest_end(skb, mx);
+
+nla_put_failure:
+ return nla_nest_cancel(skb, mx);
+}
+
+int rtnl_put_cacheinfo(struct sk_buff *skb, struct dst_entry *dst, u32 id,
+ u32 ts, u32 tsage, long expires, u32 error)
+{
+ struct rta_cacheinfo ci = {
+ .rta_lastuse = jiffies_to_clock_t(jiffies - dst->lastuse),
+ .rta_used = dst->__use,
+ .rta_clntref = atomic_read(&(dst->__refcnt)),
+ .rta_error = error,
+ .rta_id = id,
+ .rta_ts = ts,
+ .rta_tsage = tsage,
+ };
+
+ if (expires)
+ ci.rta_expires = jiffies_to_clock_t(expires);
+
+ return nla_put(skb, RTA_CACHEINFO, sizeof(ci), &ci);
+}
+
+EXPORT_SYMBOL_GPL(rtnl_put_cacheinfo);
+
+static void set_operstate(struct net_device *dev, unsigned char transition)
+{
+ unsigned char operstate = dev->operstate;
+
+ switch(transition) {
+ case IF_OPER_UP:
+ if ((operstate == IF_OPER_DORMANT ||
+ operstate == IF_OPER_UNKNOWN) &&
+ !netif_dormant(dev))
+ operstate = IF_OPER_UP;
+ break;
+
+ case IF_OPER_DORMANT:
+ if (operstate == IF_OPER_UP ||
+ operstate == IF_OPER_UNKNOWN)
+ operstate = IF_OPER_DORMANT;
+ break;
+ };
+
+ if (dev->operstate != operstate) {
+ write_lock_bh(&dev_base_lock);
+ dev->operstate = operstate;
+ write_unlock_bh(&dev_base_lock);
+ netdev_state_change(dev);
}
+}
+
+static void copy_rtnl_link_stats(struct rtnl_link_stats *a,
+ struct net_device_stats *b)
+{
+ a->rx_packets = b->rx_packets;
+ a->tx_packets = b->tx_packets;
+ a->rx_bytes = b->rx_bytes;
+ a->tx_bytes = b->tx_bytes;
+ a->rx_errors = b->rx_errors;
+ a->tx_errors = b->tx_errors;
+ a->rx_dropped = b->rx_dropped;
+ a->tx_dropped = b->tx_dropped;
+
+ a->multicast = b->multicast;
+ a->collisions = b->collisions;
+
+ a->rx_length_errors = b->rx_length_errors;
+ a->rx_over_errors = b->rx_over_errors;
+ a->rx_crc_errors = b->rx_crc_errors;
+ a->rx_frame_errors = b->rx_frame_errors;
+ a->rx_fifo_errors = b->rx_fifo_errors;
+ a->rx_missed_errors = b->rx_missed_errors;
+
+ a->tx_aborted_errors = b->tx_aborted_errors;
+ a->tx_carrier_errors = b->tx_carrier_errors;
+ a->tx_fifo_errors = b->tx_fifo_errors;
+ a->tx_heartbeat_errors = b->tx_heartbeat_errors;
+ a->tx_window_errors = b->tx_window_errors;
+
+ a->rx_compressed = b->rx_compressed;
+ a->tx_compressed = b->tx_compressed;
+};
+
+static inline size_t if_nlmsg_size(int iwbuflen)
+{
+ return NLMSG_ALIGN(sizeof(struct ifinfomsg))
+ + nla_total_size(IFNAMSIZ) /* IFLA_IFNAME */
+ + nla_total_size(IFNAMSIZ) /* IFLA_QDISC */
+ + nla_total_size(sizeof(struct rtnl_link_ifmap))
+ + nla_total_size(sizeof(struct rtnl_link_stats))
+ + nla_total_size(MAX_ADDR_LEN) /* IFLA_ADDRESS */
+ + nla_total_size(MAX_ADDR_LEN) /* IFLA_BROADCAST */
+ + nla_total_size(4) /* IFLA_TXQLEN */
+ + nla_total_size(4) /* IFLA_WEIGHT */
+ + nla_total_size(4) /* IFLA_MTU */
+ + nla_total_size(4) /* IFLA_LINK */
+ + nla_total_size(4) /* IFLA_MASTER */
+ + nla_total_size(1) /* IFLA_OPERSTATE */
+ + nla_total_size(1) /* IFLA_LINKMODE */
+ + nla_total_size(iwbuflen);
+}
+
+static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
+ void *iwbuf, int iwbuflen, int type, u32 pid,
+ u32 seq, u32 change, unsigned int flags)
+{
+ struct ifinfomsg *ifm;
+ struct nlmsghdr *nlh;
+
+ nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
+ if (nlh == NULL)
+ return -ENOBUFS;
+
+ ifm = nlmsg_data(nlh);
+ ifm->ifi_family = AF_UNSPEC;
+ ifm->__ifi_pad = 0;
+ ifm->ifi_type = dev->type;
+ ifm->ifi_index = dev->ifindex;
+ ifm->ifi_flags = dev_get_flags(dev);
+ ifm->ifi_change = change;
+
+ NLA_PUT_STRING(skb, IFLA_IFNAME, dev->name);
+ NLA_PUT_U32(skb, IFLA_TXQLEN, dev->tx_queue_len);
+ NLA_PUT_U32(skb, IFLA_WEIGHT, dev->weight);
+ NLA_PUT_U8(skb, IFLA_OPERSTATE,
+ netif_running(dev) ? dev->operstate : IF_OPER_DOWN);
+ NLA_PUT_U8(skb, IFLA_LINKMODE, dev->link_mode);
+ NLA_PUT_U32(skb, IFLA_MTU, dev->mtu);
+
+ if (dev->ifindex != dev->iflink)
+ NLA_PUT_U32(skb, IFLA_LINK, dev->iflink);
+
+ if (dev->master)
+ NLA_PUT_U32(skb, IFLA_MASTER, dev->master->ifindex);
+
+ if (dev->qdisc_sleeping)
+ NLA_PUT_STRING(skb, IFLA_QDISC, dev->qdisc_sleeping->ops->id);
if (1) {
struct rtnl_link_ifmap map = {
.dma = dev->dma,
.port = dev->if_port,
};
- RTA_PUT(skb, IFLA_MAP, sizeof(map), &map);
+ NLA_PUT(skb, IFLA_MAP, sizeof(map), &map);
}
if (dev->addr_len) {
- RTA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr);
- RTA_PUT(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast);
- }
-
- if (1) {
- u32 mtu = dev->mtu;
- RTA_PUT(skb, IFLA_MTU, sizeof(mtu), &mtu);
- }
-
- if (dev->ifindex != dev->iflink) {
- u32 iflink = dev->iflink;
- RTA_PUT(skb, IFLA_LINK, sizeof(iflink), &iflink);
- }
-
- if (dev->qdisc_sleeping)
- RTA_PUT(skb, IFLA_QDISC,
- strlen(dev->qdisc_sleeping->ops->id) + 1,
- dev->qdisc_sleeping->ops->id);
-
- if (dev->master) {
- u32 master = dev->master->ifindex;
- RTA_PUT(skb, IFLA_MASTER, sizeof(master), &master);
+ NLA_PUT(skb, IFLA_ADDRESS, dev->addr_len, dev->dev_addr);
+ NLA_PUT(skb, IFLA_BROADCAST, dev->addr_len, dev->broadcast);
}
if (dev->get_stats) {
- unsigned long *stats = (unsigned long*)dev->get_stats(dev);
+ struct net_device_stats *stats = dev->get_stats(dev);
if (stats) {
- struct rtattr *a;
- __u32 *s;
- int i;
- int n = sizeof(struct rtnl_link_stats)/4;
-
- a = __RTA_PUT(skb, IFLA_STATS, n*4);
- s = RTA_DATA(a);
- for (i=0; i<n; i++)
- s[i] = stats[i];
+ struct nlattr *attr;
+
+ attr = nla_reserve(skb, IFLA_STATS,
+ sizeof(struct rtnl_link_stats));
+ if (attr == NULL)
+ goto nla_put_failure;
+
+ copy_rtnl_link_stats(nla_data(attr), stats);
}
}
- nlh->nlmsg_len = skb->tail - b;
- return skb->len;
-nlmsg_failure:
-rtattr_failure:
- skb_trim(skb, b - skb->data);
- return -1;
+ if (iwbuf)
+ NLA_PUT(skb, IFLA_WIRELESS, iwbuflen, iwbuf);
+
+ return nlmsg_end(skb, nlh);
+
+nla_put_failure:
+ return nlmsg_cancel(skb, nlh);
}
-static int rtnetlink_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
+static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
{
int idx;
int s_idx = cb->args[0];
if (vx_info_flags(skb->sk->sk_vx_info, VXF_HIDE_NETIF, 0) &&
!dev_in_nx_info(dev, skb->sk->sk_nx_info))
continue;
- if (rtnetlink_fill_ifinfo(skb, dev, RTM_NEWLINK,
- NETLINK_CB(cb->skb).pid,
- cb->nlh->nlmsg_seq, 0,
- NLM_F_MULTI) <= 0)
+ if (rtnl_fill_ifinfo(skb, dev, NULL, 0, RTM_NEWLINK,
+ NETLINK_CB(cb->skb).pid,
+ cb->nlh->nlmsg_seq, 0, NLM_F_MULTI) <= 0)
break;
}
read_unlock(&dev_base_lock);
return skb->len;
}
-static int do_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
+static struct nla_policy ifla_policy[IFLA_MAX+1] __read_mostly = {
+ [IFLA_IFNAME] = { .type = NLA_STRING, .len = IFNAMSIZ-1 },
+ [IFLA_MAP] = { .len = sizeof(struct rtnl_link_ifmap) },
+ [IFLA_MTU] = { .type = NLA_U32 },
+ [IFLA_TXQLEN] = { .type = NLA_U32 },
+ [IFLA_WEIGHT] = { .type = NLA_U32 },
+ [IFLA_OPERSTATE] = { .type = NLA_U8 },
+ [IFLA_LINKMODE] = { .type = NLA_U8 },
+};
+
+static int rtnl_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
{
- struct ifinfomsg *ifm = NLMSG_DATA(nlh);
- struct rtattr **ida = arg;
+ struct ifinfomsg *ifm;
struct net_device *dev;
- int err, send_addr_notify = 0;
+ int err, send_addr_notify = 0, modified = 0;
+ struct nlattr *tb[IFLA_MAX+1];
+ char ifname[IFNAMSIZ];
+
+ err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
+ if (err < 0)
+ goto errout;
+
+ if (tb[IFLA_IFNAME])
+ nla_strlcpy(ifname, tb[IFLA_IFNAME], IFNAMSIZ);
+ else
+ ifname[0] = '\0';
+ err = -EINVAL;
+ ifm = nlmsg_data(nlh);
if (ifm->ifi_index >= 0)
dev = dev_get_by_index(ifm->ifi_index);
- else if (ida[IFLA_IFNAME - 1]) {
- char ifname[IFNAMSIZ];
-
- if (rtattr_strlcpy(ifname, ida[IFLA_IFNAME - 1],
- IFNAMSIZ) >= IFNAMSIZ)
- return -EINVAL;
+ else if (tb[IFLA_IFNAME])
dev = dev_get_by_name(ifname);
- } else
- return -EINVAL;
+ else
+ goto errout;
- if (!dev)
- return -ENODEV;
+ if (dev == NULL) {
+ err = -ENODEV;
+ goto errout;
+ }
- err = -EINVAL;
+ if (tb[IFLA_ADDRESS] &&
+ nla_len(tb[IFLA_ADDRESS]) < dev->addr_len)
+ goto errout_dev;
- if (ifm->ifi_flags)
- dev_change_flags(dev, ifm->ifi_flags);
+ if (tb[IFLA_BROADCAST] &&
+ nla_len(tb[IFLA_BROADCAST]) < dev->addr_len)
+ goto errout_dev;
- if (ida[IFLA_MAP - 1]) {
+ if (tb[IFLA_MAP]) {
struct rtnl_link_ifmap *u_map;
struct ifmap k_map;
if (!dev->set_config) {
err = -EOPNOTSUPP;
- goto out;
+ goto errout_dev;
}
if (!netif_device_present(dev)) {
err = -ENODEV;
- goto out;
+ goto errout_dev;
}
-
- if (ida[IFLA_MAP - 1]->rta_len != RTA_LENGTH(sizeof(*u_map)))
- goto out;
-
- u_map = RTA_DATA(ida[IFLA_MAP - 1]);
+ u_map = nla_data(tb[IFLA_MAP]);
k_map.mem_start = (unsigned long) u_map->mem_start;
k_map.mem_end = (unsigned long) u_map->mem_end;
k_map.base_addr = (unsigned short) u_map->base_addr;
k_map.port = (unsigned char) u_map->port;
err = dev->set_config(dev, &k_map);
+ if (err < 0)
+ goto errout_dev;
- if (err)
- goto out;
+ modified = 1;
}
- if (ida[IFLA_ADDRESS - 1]) {
+ if (tb[IFLA_ADDRESS]) {
struct sockaddr *sa;
int len;
if (!dev->set_mac_address) {
err = -EOPNOTSUPP;
- goto out;
+ goto errout_dev;
}
+
if (!netif_device_present(dev)) {
err = -ENODEV;
- goto out;
+ goto errout_dev;
}
- if (ida[IFLA_ADDRESS - 1]->rta_len != RTA_LENGTH(dev->addr_len))
- goto out;
len = sizeof(sa_family_t) + dev->addr_len;
sa = kmalloc(len, GFP_KERNEL);
if (!sa) {
err = -ENOMEM;
- goto out;
+ goto errout_dev;
}
sa->sa_family = dev->type;
- memcpy(sa->sa_data, RTA_DATA(ida[IFLA_ADDRESS - 1]),
+ memcpy(sa->sa_data, nla_data(tb[IFLA_ADDRESS]),
dev->addr_len);
err = dev->set_mac_address(dev, sa);
kfree(sa);
if (err)
- goto out;
+ goto errout_dev;
send_addr_notify = 1;
+ modified = 1;
}
- if (ida[IFLA_BROADCAST - 1]) {
- if (ida[IFLA_BROADCAST - 1]->rta_len != RTA_LENGTH(dev->addr_len))
- goto out;
- memcpy(dev->broadcast, RTA_DATA(ida[IFLA_BROADCAST - 1]),
- dev->addr_len);
- send_addr_notify = 1;
+ if (tb[IFLA_MTU]) {
+ err = dev_set_mtu(dev, nla_get_u32(tb[IFLA_MTU]));
+ if (err < 0)
+ goto errout_dev;
+ modified = 1;
}
- if (ida[IFLA_MTU - 1]) {
- if (ida[IFLA_MTU - 1]->rta_len != RTA_LENGTH(sizeof(u32)))
- goto out;
- err = dev_set_mtu(dev, *((u32 *) RTA_DATA(ida[IFLA_MTU - 1])));
+ /*
+ * Interface selected by interface index but interface
+ * name provided implies that a name change has been
+ * requested.
+ */
+ if (ifm->ifi_index >= 0 && ifname[0]) {
+ err = dev_change_name(dev, ifname);
+ if (err < 0)
+ goto errout_dev;
+ modified = 1;
+ }
- if (err)
- goto out;
+#ifdef CONFIG_NET_WIRELESS_RTNETLINK
+ if (tb[IFLA_WIRELESS]) {
+ /* Call Wireless Extensions.
+ * Various stuff checked in there... */
+ err = wireless_rtnetlink_set(dev, nla_data(tb[IFLA_WIRELESS]),
+ nla_len(tb[IFLA_WIRELESS]));
+ if (err < 0)
+ goto errout_dev;
+ }
+#endif /* CONFIG_NET_WIRELESS_RTNETLINK */
+ if (tb[IFLA_BROADCAST]) {
+ nla_memcpy(dev->broadcast, tb[IFLA_BROADCAST], dev->addr_len);
+ send_addr_notify = 1;
}
- if (ida[IFLA_TXQLEN - 1]) {
- if (ida[IFLA_TXQLEN - 1]->rta_len != RTA_LENGTH(sizeof(u32)))
- goto out;
- dev->tx_queue_len = *((u32 *) RTA_DATA(ida[IFLA_TXQLEN - 1]));
- }
+ if (ifm->ifi_flags)
+ dev_change_flags(dev, ifm->ifi_flags);
- if (ida[IFLA_WEIGHT - 1]) {
- if (ida[IFLA_WEIGHT - 1]->rta_len != RTA_LENGTH(sizeof(u32)))
- goto out;
+ if (tb[IFLA_TXQLEN])
+ dev->tx_queue_len = nla_get_u32(tb[IFLA_TXQLEN]);
- dev->weight = *((u32 *) RTA_DATA(ida[IFLA_WEIGHT - 1]));
- }
+ if (tb[IFLA_WEIGHT])
+ dev->weight = nla_get_u32(tb[IFLA_WEIGHT]);
- if (ifm->ifi_index >= 0 && ida[IFLA_IFNAME - 1]) {
- char ifname[IFNAMSIZ];
+ if (tb[IFLA_OPERSTATE])
+ set_operstate(dev, nla_get_u8(tb[IFLA_OPERSTATE]));
- if (rtattr_strlcpy(ifname, ida[IFLA_IFNAME - 1],
- IFNAMSIZ) >= IFNAMSIZ)
- goto out;
- err = dev_change_name(dev, ifname);
- if (err)
- goto out;
+ if (tb[IFLA_LINKMODE]) {
+ write_lock_bh(&dev_base_lock);
+ dev->link_mode = nla_get_u8(tb[IFLA_LINKMODE]);
+ write_unlock_bh(&dev_base_lock);
}
err = 0;
-out:
+errout_dev:
+ if (err < 0 && modified && net_ratelimit())
+ printk(KERN_WARNING "A link change request failed with "
+ "some changes comitted already. Interface %s may "
+ "have been left with an inconsistent configuration, "
+ "please check.\n", dev->name);
+
if (send_addr_notify)
call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
dev_put(dev);
+errout:
+ return err;
+}
+
+static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
+{
+ struct ifinfomsg *ifm;
+ struct nlattr *tb[IFLA_MAX+1];
+ struct net_device *dev = NULL;
+ struct sk_buff *nskb;
+ char *iw_buf = NULL, *iw = NULL;
+ int iw_buf_len = 0;
+ int err;
+
+ err = nlmsg_parse(nlh, sizeof(*ifm), tb, IFLA_MAX, ifla_policy);
+ if (err < 0)
+ return err;
+
+ ifm = nlmsg_data(nlh);
+ if (ifm->ifi_index >= 0) {
+ dev = dev_get_by_index(ifm->ifi_index);
+ if (dev == NULL)
+ return -ENODEV;
+ } else
+ return -EINVAL;
+
+
+#ifdef CONFIG_NET_WIRELESS_RTNETLINK
+ if (tb[IFLA_WIRELESS]) {
+ /* Call Wireless Extensions. We need to know the size before
+ * we can alloc. Various stuff checked in there... */
+ err = wireless_rtnetlink_get(dev, nla_data(tb[IFLA_WIRELESS]),
+ nla_len(tb[IFLA_WIRELESS]),
+ &iw_buf, &iw_buf_len);
+ if (err < 0)
+ goto errout;
+
+ iw += IW_EV_POINT_OFF;
+ }
+#endif /* CONFIG_NET_WIRELESS_RTNETLINK */
+
+ nskb = nlmsg_new(if_nlmsg_size(iw_buf_len), GFP_KERNEL);
+ if (nskb == NULL) {
+ err = -ENOBUFS;
+ goto errout;
+ }
+
+ err = rtnl_fill_ifinfo(nskb, dev, iw, iw_buf_len, RTM_NEWLINK,
+ NETLINK_CB(skb).pid, nlh->nlmsg_seq, 0, 0);
+ /* failure impilies BUG in if_nlmsg_size or wireless_rtnetlink_get */
+ BUG_ON(err < 0);
+
+ err = rtnl_unicast(nskb, NETLINK_CB(skb).pid);
+errout:
+ kfree(iw_buf);
+ dev_put(dev);
+
return err;
}
-static int rtnetlink_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
+static int rtnl_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
{
int idx;
int s_idx = cb->family;
void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change)
{
struct sk_buff *skb;
- int size = NLMSG_SPACE(sizeof(struct ifinfomsg) +
- sizeof(struct rtnl_link_ifmap) +
- sizeof(struct rtnl_link_stats) + 128);
-
- if (vx_flags(VXF_HIDE_NETIF, 0) &&
- !dev_in_nx_info(dev, current->nx_info))
- return;
- skb = alloc_skb(size, GFP_KERNEL);
- if (!skb)
- return;
-
- if (rtnetlink_fill_ifinfo(skb, dev, type, 0, 0, change, 0) < 0) {
- kfree_skb(skb);
- return;
- }
- NETLINK_CB(skb).dst_group = RTNLGRP_LINK;
- netlink_broadcast(rtnl, skb, 0, RTNLGRP_LINK, GFP_KERNEL);
+ int err = -ENOBUFS;
+
+ skb = nlmsg_new(if_nlmsg_size(0), GFP_KERNEL);
+ if (skb == NULL)
+ goto errout;
+
+ err = rtnl_fill_ifinfo(skb, dev, NULL, 0, type, 0, 0, change, 0);
+ /* failure implies BUG in if_nlmsg_size() */
+ BUG_ON(err < 0);
+
+ err = rtnl_notify(skb, 0, RTNLGRP_LINK, NULL, GFP_KERNEL);
+errout:
+ if (err < 0)
+ rtnl_set_sk_err(RTNLGRP_LINK, err);
}
/* Protected by RTNL sempahore. */
sz_idx = type>>2;
kind = type&3;
- if (kind != 2 && security_netlink_recv(skb)) {
+ if (kind != 2 && security_netlink_recv(skb, CAP_NET_ADMIN)) {
*errp = -EPERM;
return -1;
}
unsigned int qlen = 0;
do {
- rtnl_lock();
+ mutex_lock(&rtnl_mutex);
netlink_run_queue(sk, &qlen, &rtnetlink_rcv_msg);
- up(&rtnl_sem);
+ mutex_unlock(&rtnl_mutex);
netdev_run_todo();
} while (qlen);
static struct rtnetlink_link link_rtnetlink_table[RTM_NR_MSGTYPES] =
{
- [RTM_GETLINK - RTM_BASE] = { .dumpit = rtnetlink_dump_ifinfo },
- [RTM_SETLINK - RTM_BASE] = { .doit = do_setlink },
- [RTM_GETADDR - RTM_BASE] = { .dumpit = rtnetlink_dump_all },
- [RTM_GETROUTE - RTM_BASE] = { .dumpit = rtnetlink_dump_all },
+ [RTM_GETLINK - RTM_BASE] = { .doit = rtnl_getlink,
+ .dumpit = rtnl_dump_ifinfo },
+ [RTM_SETLINK - RTM_BASE] = { .doit = rtnl_setlink },
+ [RTM_GETADDR - RTM_BASE] = { .dumpit = rtnl_dump_all },
+ [RTM_GETROUTE - RTM_BASE] = { .dumpit = rtnl_dump_all },
[RTM_NEWNEIGH - RTM_BASE] = { .doit = neigh_add },
[RTM_DELNEIGH - RTM_BASE] = { .doit = neigh_delete },
[RTM_GETNEIGH - RTM_BASE] = { .dumpit = neigh_dump_info },
- [RTM_GETRULE - RTM_BASE] = { .dumpit = rtnetlink_dump_all },
+#ifdef CONFIG_FIB_RULES
+ [RTM_NEWRULE - RTM_BASE] = { .doit = fib_nl_newrule },
+ [RTM_DELRULE - RTM_BASE] = { .doit = fib_nl_delrule },
+#endif
+ [RTM_GETRULE - RTM_BASE] = { .dumpit = rtnl_dump_all },
[RTM_GETNEIGHTBL - RTM_BASE] = { .dumpit = neightbl_dump_info },
[RTM_SETNEIGHTBL - RTM_BASE] = { .doit = neightbl_set },
};
EXPORT_SYMBOL(rtattr_parse);
EXPORT_SYMBOL(rtnetlink_links);
EXPORT_SYMBOL(rtnetlink_put_metrics);
-EXPORT_SYMBOL(rtnl);
EXPORT_SYMBOL(rtnl_lock);
-EXPORT_SYMBOL(rtnl_lock_interruptible);
-EXPORT_SYMBOL(rtnl_sem);
+EXPORT_SYMBOL(rtnl_trylock);
EXPORT_SYMBOL(rtnl_unlock);
+EXPORT_SYMBOL(rtnl_unicast);
+EXPORT_SYMBOL(rtnl_notify);
+EXPORT_SYMBOL(rtnl_set_sk_err);
git://git.onelab.eu / linux-2.6.git / blobdiff