Pull asus into release branch

[pandora-kernel.git] / net / core / rtnetlink.c

diff --git a/net/core/rtnetlink.c b/net/core/rtnetlink.c
index 0cb4d9e..33ea8ea 100644 (file)
--- a/net/core/rtnetlink.c
+++ b/net/core/rtnetlink.c
@@ -21,7 +21,6 @@
 #include <linux/types.h>
 #include <linux/socket.h>
 #include <linux/kernel.h>
-#include <linux/sched.h>
 #include <linux/timer.h>
 #include <linux/string.h>
 #include <linux/sockios.h>
@@ -212,6 +211,26 @@ 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)
 {
@@ -300,7 +319,7 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
 
        nlh = nlmsg_put(skb, pid, seq, type, sizeof(*ifm), flags);
        if (nlh == NULL)
-               return -ENOBUFS;
+               return -EMSGSIZE;
 
        ifm = nlmsg_data(nlh);
        ifm->ifi_family = AF_UNSPEC;
@@ -364,7 +383,8 @@ static int rtnl_fill_ifinfo(struct sk_buff *skb, struct net_device *dev,
        return nlmsg_end(skb, nlh);
 
 nla_put_failure:
-       return nlmsg_cancel(skb, nlh);
+       nlmsg_cancel(skb, nlh);
+       return -EMSGSIZE;
 }
 
 static int rtnl_dump_ifinfo(struct sk_buff *skb, struct netlink_callback *cb)
@@ -601,7 +621,8 @@ static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
                if (err < 0)
                        goto errout;
 
-               iw += IW_EV_POINT_OFF;
+               /* Payload is at an offset in buffer */
+               iw = iw_buf + IW_EV_POINT_OFF;
        }
 #endif /* CONFIG_NET_WIRELESS_RTNETLINK */
 
@@ -613,9 +634,12 @@ static int rtnl_getlink(struct sk_buff *skb, struct nlmsghdr* nlh, void *arg)
 
        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);
-
+       if (err < 0) {
+               /* -EMSGSIZE implies BUG in if_nlmsg_size */
+               WARN_ON(err == -EMSGSIZE);
+               kfree_skb(nskb);
+               goto errout;
+       }
        err = rtnl_unicast(nskb, NETLINK_CB(skb).pid);
 errout:
        kfree(iw_buf);
@@ -658,9 +682,12 @@ void rtmsg_ifinfo(int type, struct net_device *dev, unsigned change)
                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);
-
+       if (err < 0) {
+               /* -EMSGSIZE implies BUG in if_nlmsg_size() */
+               WARN_ON(err == -EMSGSIZE);
+               kfree_skb(skb);
+               goto errout;
+       }
        err = rtnl_notify(skb, 0, RTNLGRP_LINK, NULL, GFP_KERNEL);
 errout:
        if (err < 0)
@@ -847,7 +874,7 @@ void __init rtnetlink_init(void)
                panic("rtnetlink_init: cannot allocate rta_buf\n");
 
        rtnl = netlink_kernel_create(NETLINK_ROUTE, RTNLGRP_MAX, rtnetlink_rcv,
-                                    THIS_MODULE);
+                                    THIS_MODULE);
        if (rtnl == NULL)
                panic("rtnetlink_init: cannot initialize rtnetlink\n");
        netlink_set_nonroot(NETLINK_ROUTE, NL_NONROOT_RECV);