vserver 1.9.3
[linux-2.6.git] / net / core / rtnetlink.c
index 9afe9d1..2a8e289 100644 (file)
@@ -166,31 +166,58 @@ static int rtnetlink_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
        r->ifi_family = AF_UNSPEC;
        r->ifi_type = dev->type;
        r->ifi_index = dev->ifindex;
-       r->ifi_flags = dev->flags;
+       r->ifi_flags = dev_get_flags(dev);
        r->ifi_change = change;
 
-       if (!netif_running(dev) || !netif_carrier_ok(dev))
-               r->ifi_flags &= ~IFF_RUNNING;
-       else
-               r->ifi_flags |= IFF_RUNNING;
-
        RTA_PUT(skb, IFLA_IFNAME, strlen(dev->name)+1, dev->name);
+
+       if (1) {
+               u32 txqlen = dev->tx_queue_len;
+               RTA_PUT(skb, IFLA_TXQLEN, sizeof(txqlen), &txqlen);
+       }
+
+       if (1) {
+               u32 weight = dev->weight;
+               RTA_PUT(skb, IFLA_WEIGHT, sizeof(weight), &weight);
+       }
+
+       if (1) {
+               struct rtnl_link_ifmap map = {
+                       .mem_start   = dev->mem_start,
+                       .mem_end     = dev->mem_end,
+                       .base_addr   = dev->base_addr,
+                       .irq         = dev->irq,
+                       .dma         = dev->dma,
+                       .port        = dev->if_port,
+               };
+               RTA_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) {
-               unsigned mtu = dev->mtu;
+               u32 mtu = dev->mtu;
                RTA_PUT(skb, IFLA_MTU, sizeof(mtu), &mtu);
        }
-       if (dev->ifindex != dev->iflink)
-               RTA_PUT(skb, IFLA_LINK, sizeof(int), &dev->iflink);
+
+       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)
-               RTA_PUT(skb, IFLA_MASTER, sizeof(int), &dev->master->ifindex);
+       
+       if (dev->master) {
+               u32 master = dev->master->ifindex;
+               RTA_PUT(skb, IFLA_MASTER, sizeof(master), &master);
+       }
+
        if (dev->get_stats) {
                unsigned long *stats = (unsigned long*)dev->get_stats(dev);
                if (stats) {
@@ -224,7 +251,8 @@ int rtnetlink_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
        for (dev=dev_base, idx=0; dev; dev = dev->next, idx++) {
                if (idx < s_idx)
                        continue;
-               if (!dev_in_nx_info(dev, current->nx_info))
+               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) <= 0)
                        break;
@@ -240,7 +268,7 @@ static int do_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
        struct ifinfomsg  *ifm = NLMSG_DATA(nlh);
        struct rtattr    **ida = arg;
        struct net_device *dev;
-       int err;
+       int err, send_addr_notify = 0;
 
        dev = dev_get_by_index(ifm->ifi_index);
        if (!dev)
@@ -248,6 +276,41 @@ static int do_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
 
        err = -EINVAL;
 
+       if (ifm->ifi_flags)
+               dev_change_flags(dev, ifm->ifi_flags);
+
+       if (ida[IFLA_MAP - 1]) {
+               struct rtnl_link_ifmap *u_map;
+               struct ifmap k_map;
+
+               if (!dev->set_config) {
+                       err = -EOPNOTSUPP;
+                       goto out;
+               }
+
+               if (!netif_device_present(dev)) {
+                       err = -ENODEV;
+                       goto out;
+               }
+               
+               if (ida[IFLA_MAP - 1]->rta_len != RTA_LENGTH(sizeof(*u_map)))
+                       goto out;
+
+               u_map = RTA_DATA(ida[IFLA_MAP - 1]);
+
+               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.irq = (unsigned char) u_map->irq;
+               k_map.dma = (unsigned char) u_map->dma;
+               k_map.port = (unsigned char) u_map->port;
+
+               err = dev->set_config(dev, &k_map);
+
+               if (err)
+                       goto out;
+       }
+
        if (ida[IFLA_ADDRESS - 1]) {
                if (!dev->set_mac_address) {
                        err = -EOPNOTSUPP;
@@ -263,6 +326,7 @@ static int do_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
                err = dev->set_mac_address(dev, RTA_DATA(ida[IFLA_ADDRESS - 1]));
                if (err)
                        goto out;
+               send_addr_notify = 1;
        }
 
        if (ida[IFLA_BROADCAST - 1]) {
@@ -270,12 +334,54 @@ static int do_setlink(struct sk_buff *skb, struct nlmsghdr *nlh, void *arg)
                        goto out;
                memcpy(dev->broadcast, RTA_DATA(ida[IFLA_BROADCAST - 1]),
                       dev->addr_len);
+               send_addr_notify = 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])));
+
+               if (err)
+                       goto out;
+
+       }
+
+       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 (ida[IFLA_WEIGHT - 1]) {
+               if (ida[IFLA_WEIGHT - 1]->rta_len != RTA_LENGTH(sizeof(u32)))
+                       goto out;
+
+               dev->weight = *((u32 *) RTA_DATA(ida[IFLA_WEIGHT - 1]));
+       }
+
+       if (ida[IFLA_IFNAME - 1]) {
+               char ifname[IFNAMSIZ];
+
+               if (ida[IFLA_IFNAME - 1]->rta_len > RTA_LENGTH(sizeof(ifname)))
+                       goto out;
+
+               memset(ifname, 0, sizeof(ifname));
+               memcpy(ifname, RTA_DATA(ida[IFLA_IFNAME - 1]),
+                       RTA_PAYLOAD(ida[IFLA_IFNAME - 1]));
+               ifname[IFNAMSIZ - 1] = '\0';
+
+               err = dev_change_name(dev, ifname);
+
+               if (err)
+                       goto out;
        }
 
        err = 0;
 
 out:
-       if (!err)
+       if (send_addr_notify)
                call_netdevice_notifiers(NETDEV_CHANGEADDR, dev);
 
        dev_put(dev);
@@ -309,9 +415,12 @@ static int rtnetlink_dump_all(struct sk_buff *skb, struct netlink_callback *cb)
 void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change)
 {
        struct sk_buff *skb;
-       int size = NLMSG_GOODSIZE;
+       int size = NLMSG_SPACE(sizeof(struct ifinfomsg) +
+                              sizeof(struct rtnl_link_ifmap) +
+                              sizeof(struct rtnl_link_stats) + 128);
 
-       if (!dev_in_nx_info(dev, current->nx_info))
+       if (vx_flags(VXF_HIDE_NETIF, 0) &&
+               !dev_in_nx_info(dev, current->nx_info))
                return;
        skb = alloc_skb(size, GFP_KERNEL);
        if (!skb)
@@ -330,6 +439,10 @@ static int rtnetlink_done(struct netlink_callback *cb)
        return 0;
 }
 
+/* Protected by RTNL sempahore.  */
+static struct rtattr **rta_buf;
+static int rtattr_max;
+
 /* Process one rtnetlink message. */
 
 static __inline__ int
@@ -337,8 +450,6 @@ rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, int *errp)
 {
        struct rtnetlink_link *link;
        struct rtnetlink_link *link_tab;
-       struct rtattr   *rta[RTATTR_MAX];
-
        int sz_idx, kind;
        int min_len;
        int family;
@@ -405,7 +516,7 @@ rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, int *errp)
                return -1;
        }
 
-       memset(&rta, 0, sizeof(rta));
+       memset(rta_buf, 0, (rtattr_max * sizeof(struct rtattr *)));
 
        min_len = rtm_min[sz_idx];
        if (nlh->nlmsg_len < min_len)
@@ -420,7 +531,7 @@ rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, int *errp)
                        if (flavor) {
                                if (flavor > rta_max[sz_idx])
                                        goto err_inval;
-                               rta[flavor-1] = attr;
+                               rta_buf[flavor-1] = attr;
                        }
                        attr = RTA_NEXT(attr, attrlen);
                }
@@ -430,7 +541,7 @@ rtnetlink_rcv_msg(struct sk_buff *skb, struct nlmsghdr *nlh, int *errp)
                link = &(rtnetlink_links[PF_UNSPEC][type]);
        if (link->doit == NULL)
                goto err_inval;
-       err = link->doit(skb, nlh, (void *)&rta);
+       err = link->doit(skb, nlh, (void *)&rta_buf[0]);
 
        *errp = err;
        return err;
@@ -550,6 +661,16 @@ static struct notifier_block rtnetlink_dev_notifier = {
 
 void __init rtnetlink_init(void)
 {
+       int i;
+
+       rtattr_max = 0;
+       for (i = 0; i < ARRAY_SIZE(rta_max); i++)
+               if (rta_max[i] > rtattr_max)
+                       rtattr_max = rta_max[i];
+       rta_buf = kmalloc(rtattr_max * sizeof(struct rtattr *), GFP_KERNEL);
+       if (!rta_buf)
+               panic("rtnetlink_init: cannot allocate rta_buf\n");
+
        rtnl = netlink_kernel_create(NETLINK_ROUTE, rtnetlink_rcv);
        if (rtnl == NULL)
                panic("rtnetlink_init: cannot initialize rtnetlink\n");