tcp: initialize rcv_mss to TCP_MIN_MSS instead of 0

[pandora-kernel.git] / net / ipv4 / ipmr.c

diff --git a/net/ipv4/ipmr.c b/net/ipv4/ipmr.c
index 76a7f07..86af7fe 100644 (file)
--- a/net/ipv4/ipmr.c
+++ b/net/ipv4/ipmr.c
@@ -125,6 +125,8 @@ static DEFINE_SPINLOCK(mfc_unres_lock);
 static struct kmem_cache *mrt_cachep __read_mostly;
 
 static struct mr_table *ipmr_new_table(struct net *net, u32 id);
+static void ipmr_free_table(struct mr_table *mrt);
+
 static int ip_mr_forward(struct net *net, struct mr_table *mrt,
                         struct sk_buff *skb, struct mfc_cache *cache,
                         int local);
@@ -132,6 +134,7 @@ static int ipmr_cache_report(struct mr_table *mrt,
                             struct sk_buff *pkt, vifi_t vifi, int assert);
 static int __ipmr_fill_mroute(struct mr_table *mrt, struct sk_buff *skb,
                              struct mfc_cache *c, struct rtmsg *rtm);
+static void mroute_clean_tables(struct mr_table *mrt, bool all);
 static void ipmr_expire_process(unsigned long arg);
 
 #ifdef CONFIG_IP_MROUTE_MULTIPLE_TABLES
@@ -152,9 +155,12 @@ static struct mr_table *ipmr_get_table(struct net *net, u32 id)
 static int ipmr_fib_lookup(struct net *net, struct flowi4 *flp4,
                           struct mr_table **mrt)
 {
-       struct ipmr_result res;
-       struct fib_lookup_arg arg = { .result = &res, };
        int err;
+       struct ipmr_result res;
+       struct fib_lookup_arg arg = {
+               .result = &res,
+               .flags = FIB_LOOKUP_NOREF,
+       };
 
        err = fib_rules_lookup(net->ipv4.mr_rules_ops,
                               flowi4_to_flowi(flp4), 0, &arg);
@@ -272,7 +278,7 @@ static void __net_exit ipmr_rules_exit(struct net *net)
 
        list_for_each_entry_safe(mrt, next, &net->ipv4.mr_tables, list) {
                list_del(&mrt->list);
-               kfree(mrt);
+               ipmr_free_table(mrt);
        }
        fib_rules_unregister(net->ipv4.mr_rules_ops);
 }
@@ -300,7 +306,7 @@ static int __net_init ipmr_rules_init(struct net *net)
 
 static void __net_exit ipmr_rules_exit(struct net *net)
 {
-       kfree(net->ipv4.mrt);
+       ipmr_free_table(net->ipv4.mrt);
 }
 #endif
 
@@ -337,6 +343,13 @@ static struct mr_table *ipmr_new_table(struct net *net, u32 id)
        return mrt;
 }
 
+static void ipmr_free_table(struct mr_table *mrt)
+{
+       del_timer_sync(&mrt->ipmr_expire_timer);
+       mroute_clean_tables(mrt, true);
+       kfree(mrt);
+}
+
 /* Service routines creating virtual interfaces: DVMRP tunnels and PIMREG */
 
 static void ipmr_del_tunnel(struct net_device *dev, struct vifctl *v)
@@ -817,8 +830,10 @@ static struct mfc_cache *ipmr_cache_alloc(void)
 {
        struct mfc_cache *c = kmem_cache_zalloc(mrt_cachep, GFP_KERNEL);
 
-       if (c)
+       if (c) {
+               c->mfc_un.res.last_assert = jiffies - MFC_ASSERT_THRESH - 1;
                c->mfc_un.res.minvif = MAXVIFS;
+       }
        return c;
 }
 
@@ -1130,7 +1145,7 @@ static int ipmr_mfc_add(struct net *net, struct mr_table *mrt,
  *     Close the multicast socket, and clear the vif tables etc
  */
 
-static void mroute_clean_tables(struct mr_table *mrt)
+static void mroute_clean_tables(struct mr_table *mrt, bool all)
 {
        int i;
        LIST_HEAD(list);
@@ -1139,8 +1154,9 @@ static void mroute_clean_tables(struct mr_table *mrt)
        /* Shut down all active vif entries */
 
        for (i = 0; i < mrt->maxvif; i++) {
-               if (!(mrt->vif_table[i].flags & VIFF_STATIC))
-                       vif_delete(mrt, i, 0, &list);
+               if (!all && (mrt->vif_table[i].flags & VIFF_STATIC))
+                       continue;
+               vif_delete(mrt, i, 0, &list);
        }
        unregister_netdevice_many(&list);
 
@@ -1148,7 +1164,7 @@ static void mroute_clean_tables(struct mr_table *mrt)
 
        for (i = 0; i < MFC_LINES; i++) {
                list_for_each_entry_safe(c, next, &mrt->mfc_cache_array[i], list) {
-                       if (c->mfc_flags & MFC_STATIC)
+                       if (!all && (c->mfc_flags & MFC_STATIC))
                                continue;
                        list_del_rcu(&c->list);
                        ipmr_cache_free(c);
@@ -1178,7 +1194,7 @@ static void mrtsock_destruct(struct sock *sk)
                if (sk == rtnl_dereference(mrt->mroute_sk)) {
                        IPV4_DEVCONF_ALL(net, MC_FORWARDING)--;
                        RCU_INIT_POINTER(mrt->mroute_sk, NULL);
-                       mroute_clean_tables(mrt);
+                       mroute_clean_tables(mrt, false);
                }
        }
        rtnl_unlock();
@@ -1225,7 +1241,7 @@ int ip_mroute_setsockopt(struct sock *sk, int optname, char __user *optval, unsi
 
                ret = ip_ra_control(sk, 1, mrtsock_destruct);
                if (ret == 0) {
-                       RCU_INIT_POINTER(mrt->mroute_sk, sk);
+                       rcu_assign_pointer(mrt->mroute_sk, sk);
                        IPV4_DEVCONF_ALL(net, MC_FORWARDING)++;
                }
                rtnl_unlock();
@@ -1566,7 +1582,7 @@ static void ip_encap(struct sk_buff *skb, __be32 saddr, __be32 daddr)
        iph->protocol   =       IPPROTO_IPIP;
        iph->ihl        =       5;
        iph->tot_len    =       htons(skb->len);
-       ip_select_ident(iph, skb_dst(skb), NULL);
+       ip_select_ident(skb, NULL);
        ip_send_check(iph);
 
        memset(&(IPCB(skb)->opt), 0, sizeof(IPCB(skb)->opt));
@@ -1577,7 +1593,7 @@ static inline int ipmr_forward_finish(struct sk_buff *skb)
 {
        struct ip_options *opt = &(IPCB(skb)->opt);
 
-       IP_INC_STATS_BH(dev_net(skb_dst(skb)->dev), IPSTATS_MIB_OUTFORWDATAGRAMS);
+       IP_INC_STATS(dev_net(skb_dst(skb)->dev), IPSTATS_MIB_OUTFORWDATAGRAMS);
 
        if (unlikely(opt->optlen))
                ip_forward_options(skb);
@@ -1639,7 +1655,7 @@ static void ipmr_queue_xmit(struct net *net, struct mr_table *mrt,
                 * to blackhole.
                 */
 
-               IP_INC_STATS_BH(dev_net(dev), IPSTATS_MIB_FRAGFAILS);
+               IP_INC_STATS(dev_net(dev), IPSTATS_MIB_FRAGFAILS);
                ip_rt_put(rt);
                goto out_free;
        }
@@ -2044,7 +2060,7 @@ rtattr_failure:
 
 int ipmr_get_route(struct net *net, struct sk_buff *skb,
                   __be32 saddr, __be32 daddr,
-                  struct rtmsg *rtm, int nowait)
+                  struct rtmsg *rtm, int nowait, u32 portid)
 {
        struct mfc_cache *cache;
        struct mr_table *mrt;
@@ -2084,6 +2100,7 @@ int ipmr_get_route(struct net *net, struct sk_buff *skb,
                        return -ENOMEM;
                }
 
+               NETLINK_CB(skb2).pid = portid;
                skb_push(skb2, sizeof(struct iphdr));
                skb_reset_network_header(skb2);
                iph = ip_hdr(skb2);