11 files changed, 108 insertions, 63 deletions

diff --git a/net/ipv4/fib_semantics.c b/net/ipv4/fib_semantics.c
index 9be53a8e72c3..51738000f3dc 100644
--- a/net/ipv4/fib_semantics.c
+++ b/net/ipv4/fib_semantics.c
@@ -159,7 +159,7 @@ void free_fib_info(struct fib_info *fi)
 
 void fib_release_info(struct fib_info *fi)
 {
-        write_lock(&fib_info_lock);
+        write_lock_bh(&fib_info_lock);
         if (fi && --fi->fib_treeref == 0) {
                 hlist_del(&fi->fib_hash);
                 if (fi->fib_prefsrc)
@@ -172,7 +172,7 @@ void fib_release_info(struct fib_info *fi)
                 fi->fib_dead = 1;
                 fib_info_put(fi);
         }
-        write_unlock(&fib_info_lock);
+        write_unlock_bh(&fib_info_lock);
 }
 
 static __inline__ int nh_comp(const struct fib_info *fi, const struct fib_info *ofi)
@@ -598,7 +598,7 @@ static void fib_hash_move(struct hlist_head *new_info_hash,
         unsigned int old_size = fib_hash_size;
         unsigned int i, bytes;
 
-        write_lock(&fib_info_lock);
+        write_lock_bh(&fib_info_lock);
         old_info_hash = fib_info_hash;
         old_laddrhash = fib_info_laddrhash;
         fib_hash_size = new_size;
@@ -639,7 +639,7 @@ static void fib_hash_move(struct hlist_head *new_info_hash,
         }
         fib_info_laddrhash = new_laddrhash;
 
-        write_unlock(&fib_info_lock);
+        write_unlock_bh(&fib_info_lock);
 
         bytes = old_size * sizeof(struct hlist_head *);
         fib_hash_free(old_info_hash, bytes);
@@ -820,7 +820,7 @@ link_it:
 
         fi->fib_treeref++;
         atomic_inc(&fi->fib_clntref);
-        write_lock(&fib_info_lock);
+        write_lock_bh(&fib_info_lock);
         hlist_add_head(&fi->fib_hash,
                        &fib_info_hash[fib_info_hashfn(fi)]);
         if (fi->fib_prefsrc) {
@@ -839,7 +839,7 @@ link_it:
                 head = &fib_info_devhash[hash];
                 hlist_add_head(&nh->nh_hash, head);
         } endfor_nexthops(fi)
-        write_unlock(&fib_info_lock);
+        write_unlock_bh(&fib_info_lock);
         return fi;
 
 err_inval:
diff --git a/net/ipv4/igmp.c b/net/ipv4/igmp.c
index 9f4b752f5a33..8e8117c19e4d 100644
--- a/net/ipv4/igmp.c
+++ b/net/ipv4/igmp.c
@@ -1793,29 +1793,35 @@ int ip_mc_leave_group(struct sock *sk, struct ip_mreqn *imr)
         struct in_device *in_dev;
         u32 group = imr->imr_multiaddr.s_addr;
         u32 ifindex;
+        int ret = -EADDRNOTAVAIL;
 
         rtnl_lock();
         in_dev = ip_mc_find_dev(imr);
-        if (!in_dev) {
-                rtnl_unlock();
-                return -ENODEV;
-        }
         ifindex = imr->imr_ifindex;
         for (imlp = &inet->mc_list; (iml = *imlp) != NULL; imlp = &iml->next) {
-                if (iml->multi.imr_multiaddr.s_addr == group &&
-                    iml->multi.imr_ifindex == ifindex) {
-                        (void) ip_mc_leave_src(sk, iml, in_dev);
+                if (iml->multi.imr_multiaddr.s_addr != group)
+                        continue;
+                if (ifindex) {
+                        if (iml->multi.imr_ifindex != ifindex)
+                                continue;
+                } else if (imr->imr_address.s_addr && imr->imr_address.s_addr !=
+                                iml->multi.imr_address.s_addr)
+                        continue;
+
+                (void) ip_mc_leave_src(sk, iml, in_dev);
 
-                        *imlp = iml->next;
+                *imlp = iml->next;
 
+                if (in_dev)
                         ip_mc_dec_group(in_dev, group);
-                        rtnl_unlock();
-                        sock_kfree_s(sk, iml, sizeof(*iml));
-                        return 0;
-                }
+                rtnl_unlock();
+                sock_kfree_s(sk, iml, sizeof(*iml));
+                return 0;
         }
+        if (!in_dev)
+                ret = -ENODEV;
         rtnl_unlock();
-        return -EADDRNOTAVAIL;
+        return ret;
 }
 
 int ip_mc_source(int add, int omode, struct sock *sk, struct
@@ -2199,13 +2205,13 @@ void ip_mc_drop_socket(struct sock *sk)
                 struct in_device *in_dev;
                 inet->mc_list = iml->next;
 
-                if ((in_dev = inetdev_by_index(iml->multi.imr_ifindex)) != NULL) {
-                        (void) ip_mc_leave_src(sk, iml, in_dev);
+                in_dev = inetdev_by_index(iml->multi.imr_ifindex);
+                (void) ip_mc_leave_src(sk, iml, in_dev);
+                if (in_dev != NULL) {
                         ip_mc_dec_group(in_dev, iml->multi.imr_multiaddr.s_addr);
                         in_dev_put(in_dev);
                 }
                 sock_kfree_s(sk, iml, sizeof(*iml));
-
         }
         rtnl_unlock();
 }
diff --git a/net/ipv4/ip_output.c b/net/ipv4/ip_output.c
index 9bf307a29783..4c20f5546893 100644
--- a/net/ipv4/ip_output.c
+++ b/net/ipv4/ip_output.c
@@ -947,7 +947,7 @@ alloc_new_skb:
                                 skb_prev->csum = csum_sub(skb_prev->csum,
                                                           skb->csum);
                                 data += fraggap;
-                                skb_trim(skb_prev, maxfraglen);
+                                pskb_trim_unique(skb_prev, maxfraglen);
                         }
 
                         copy = datalen - transhdrlen - fraggap;
@@ -1142,7 +1142,7 @@ ssize_t	ip_append_page(struct sock *sk, struct page *page,
                                         data, fraggap, 0);
                                 skb_prev->csum = csum_sub(skb_prev->csum,
                                                           skb->csum);
-                                skb_trim(skb_prev, maxfraglen);
+                                pskb_trim_unique(skb_prev, maxfraglen);
                         }
 
                         /*
diff --git a/net/ipv4/netfilter/arp_tables.c b/net/ipv4/netfilter/arp_tables.c
index 80c73ca90116..8d1d7a6e72a5 100644
--- a/net/ipv4/netfilter/arp_tables.c
+++ b/net/ipv4/netfilter/arp_tables.c
@@ -236,7 +236,7 @@ unsigned int arpt_do_table(struct sk_buff **pskb,
         struct arpt_entry *e, *back;
         const char *indev, *outdev;
         void *table_base;
-        struct xt_table_info *private = table->private;
+        struct xt_table_info *private;
 
         /* ARP header, plus 2 device addresses, plus 2 IP addresses.  */
         if (!pskb_may_pull((*pskb), (sizeof(struct arphdr) +
@@ -248,6 +248,7 @@ unsigned int arpt_do_table(struct sk_buff **pskb,
         outdev = out ? out->name : nulldevname;
 
         read_lock_bh(&table->lock);
+        private = table->private;
         table_base = (void *)private->entries[smp_processor_id()];
         e = get_entry(table_base, private->hook_entry[hook]);
         back = get_entry(table_base, private->underflow[hook]);
@@ -1170,21 +1171,34 @@ static int __init arp_tables_init(void)
 {
         int ret;
 
-        xt_proto_init(NF_ARP);
+        ret = xt_proto_init(NF_ARP);
+        if (ret < 0)
+                goto err1;
 
         /* Noone else will be downing sem now, so we won't sleep */
-        xt_register_target(&arpt_standard_target);
-        xt_register_target(&arpt_error_target);
+        ret = xt_register_target(&arpt_standard_target);
+        if (ret < 0)
+                goto err2;
+        ret = xt_register_target(&arpt_error_target);
+        if (ret < 0)
+                goto err3;
 
         /* Register setsockopt */
         ret = nf_register_sockopt(&arpt_sockopts);
-        if (ret < 0) {
-                duprintf("Unable to register sockopts.\n");
-                return ret;
-        }
+        if (ret < 0)
+                goto err4;
 
         printk("arp_tables: (C) 2002 David S. Miller\n");
         return 0;
+
+err4:
+        xt_unregister_target(&arpt_error_target);
+err3:
+        xt_unregister_target(&arpt_standard_target);
+err2:
+        xt_proto_fini(NF_ARP);
+err1:
+        return ret;
 }
 
 static void __exit arp_tables_fini(void)
diff --git a/net/ipv4/netfilter/ip_conntrack_netlink.c b/net/ipv4/netfilter/ip_conntrack_netlink.c
index 33891bb1fde4..0d4cc92391fa 100644
--- a/net/ipv4/netfilter/ip_conntrack_netlink.c
+++ b/net/ipv4/netfilter/ip_conntrack_netlink.c
@@ -415,21 +415,18 @@ ctnetlink_dump_table(struct sk_buff *skb, struct netlink_callback *cb)
                         cb->args[0], *id);
 
         read_lock_bh(&ip_conntrack_lock);
+        last = (struct ip_conntrack *)cb->args[1];
         for (; cb->args[0] < ip_conntrack_htable_size; cb->args[0]++) {
 restart:
-                last = (struct ip_conntrack *)cb->args[1];
                 list_for_each_prev(i, &ip_conntrack_hash[cb->args[0]]) {
                         h = (struct ip_conntrack_tuple_hash *) i;
                         if (DIRECTION(h) != IP_CT_DIR_ORIGINAL)
                                 continue;
                         ct = tuplehash_to_ctrack(h);
-                        if (last != NULL) {
-                                if (ct == last) {
-                                        ip_conntrack_put(last);
-                                        cb->args[1] = 0;
-                                        last = NULL;
-                                } else
+                        if (cb->args[1]) {
+                                if (ct != last)
                                         continue;
+                                cb->args[1] = 0;
                         }
                         if (ctnetlink_fill_info(skb, NETLINK_CB(cb->skb).pid,
                                                 cb->nlh->nlmsg_seq,
@@ -440,17 +437,17 @@ restart:
                                 goto out;
                         }
                 }
-                if (last != NULL) {
-                        ip_conntrack_put(last);
+                if (cb->args[1]) {
                         cb->args[1] = 0;
                         goto restart;
                 }
         }
 out:
         read_unlock_bh(&ip_conntrack_lock);
+        if (last)
+                ip_conntrack_put(last);
 
         DEBUGP("leaving, last bucket=%lu id=%u\n", cb->args[0], *id);
-
         return skb->len;
 }
 
diff --git a/net/ipv4/netfilter/ip_tables.c b/net/ipv4/netfilter/ip_tables.c
index fc5bdd5eb7d3..048514f15f2f 100644
--- a/net/ipv4/netfilter/ip_tables.c
+++ b/net/ipv4/netfilter/ip_tables.c
@@ -230,7 +230,7 @@ ipt_do_table(struct sk_buff **pskb,
         const char *indev, *outdev;
         void *table_base;
         struct ipt_entry *e, *back;
-        struct xt_table_info *private = table->private;
+        struct xt_table_info *private;
 
         /* Initialization */
         ip = (*pskb)->nh.iph;
@@ -247,6 +247,7 @@ ipt_do_table(struct sk_buff **pskb,
 
         read_lock_bh(&table->lock);
         IP_NF_ASSERT(table->valid_hooks & (1 << hook));
+        private = table->private;
         table_base = (void *)private->entries[smp_processor_id()];
         e = get_entry(table_base, private->hook_entry[hook]);
 
@@ -2239,22 +2240,39 @@ static int __init ip_tables_init(void)
 {
         int ret;
 
-        xt_proto_init(AF_INET);
+        ret = xt_proto_init(AF_INET);
+        if (ret < 0)
+                goto err1;
 
         /* Noone else will be downing sem now, so we won't sleep */
-        xt_register_target(&ipt_standard_target);
-        xt_register_target(&ipt_error_target);
-        xt_register_match(&icmp_matchstruct);
+        ret = xt_register_target(&ipt_standard_target);
+        if (ret < 0)
+                goto err2;
+        ret = xt_register_target(&ipt_error_target);
+        if (ret < 0)
+                goto err3;
+        ret = xt_register_match(&icmp_matchstruct);
+        if (ret < 0)
+                goto err4;
 
         /* Register setsockopt */
         ret = nf_register_sockopt(&ipt_sockopts);
-        if (ret < 0) {
-                duprintf("Unable to register sockopts.\n");
-                return ret;
-        }
+        if (ret < 0)
+                goto err5;
 
         printk("ip_tables: (C) 2000-2006 Netfilter Core Team\n");
         return 0;
+
+err5:
+        xt_unregister_match(&icmp_matchstruct);
+err4:
+        xt_unregister_target(&ipt_error_target);
+err3:
+        xt_unregister_target(&ipt_standard_target);
+err2:
+        xt_proto_fini(AF_INET);
+err1:
+        return ret;
 }
 
 static void __exit ip_tables_fini(void)
diff --git a/net/ipv4/netfilter/ipt_ULOG.c b/net/ipv4/netfilter/ipt_ULOG.c
index d7dd7fe7051c..d46fd677fa11 100644
--- a/net/ipv4/netfilter/ipt_ULOG.c
+++ b/net/ipv4/netfilter/ipt_ULOG.c
@@ -115,6 +115,11 @@ static void ulog_send(unsigned int nlgroupnum)
                 del_timer(&ub->timer);
         }
 
+        if (!ub->skb) {
+                DEBUGP("ipt_ULOG: ulog_send: nothing to send\n");
+                return;
+        }
+
         /* last nlmsg needs NLMSG_DONE */
         if (ub->qlen > 1)
                 ub->lastnlh->nlmsg_type = NLMSG_DONE;
diff --git a/net/ipv4/netfilter/ipt_hashlimit.c b/net/ipv4/netfilter/ipt_hashlimit.c
index 6b662449e825..3bd2368e1fc9 100644
--- a/net/ipv4/netfilter/ipt_hashlimit.c
+++ b/net/ipv4/netfilter/ipt_hashlimit.c
@@ -454,15 +454,12 @@ hashlimit_match(const struct sk_buff *skb,
                 dh->rateinfo.credit_cap = user2credits(hinfo->cfg.avg * 
                                                         hinfo->cfg.burst);
                 dh->rateinfo.cost = user2credits(hinfo->cfg.avg);
-
-                spin_unlock_bh(&hinfo->lock);
-                return 1;
+        } else {
+                /* update expiration timeout */
+                dh->expires = now + msecs_to_jiffies(hinfo->cfg.expire);
+                rateinfo_recalc(dh, now);
         }
 
-        /* update expiration timeout */
-        dh->expires = now + msecs_to_jiffies(hinfo->cfg.expire);
-
-        rateinfo_recalc(dh, now);
         if (dh->rateinfo.credit >= dh->rateinfo.cost) {
                 /* We're underlimit. */
                 dh->rateinfo.credit -= dh->rateinfo.cost;
diff --git a/net/ipv4/route.c b/net/ipv4/route.c
index 19bd49d69d9f..b873cbcdd0b8 100644
--- a/net/ipv4/route.c
+++ b/net/ipv4/route.c
@@ -3157,7 +3157,7 @@ int __init ip_rt_init(void)
                                         rhash_entries,
                                         (num_physpages >= 128 * 1024) ?
                                         15 : 17,
-                                        HASH_HIGHMEM,
+                                        0,
                                         &rt_hash_log,
                                         &rt_hash_mask,
                                         0);
diff --git a/net/ipv4/tcp_output.c b/net/ipv4/tcp_output.c
index 5c08ea20a18d..b4f3ffe1b3b4 100644
--- a/net/ipv4/tcp_output.c
+++ b/net/ipv4/tcp_output.c
@@ -201,6 +201,7 @@ void tcp_select_initial_window(int __space, __u32 mss,
                  * See RFC1323 for an explanation of the limit to 14 
                  */
                 space = max_t(u32, sysctl_tcp_rmem[2], sysctl_rmem_max);
+                space = min_t(u32, space, *window_clamp);
                 while (space > 65535 && (*rcv_wscale) < 14) {
                         space >>= 1;
                         (*rcv_wscale)++;
@@ -466,7 +467,8 @@ static int tcp_transmit_skb(struct sock *sk, struct sk_buff *skb, int clone_it,
         if (skb->len != tcp_header_size)
                 tcp_event_data_sent(tp, skb, sk);
 
-        TCP_INC_STATS(TCP_MIB_OUTSEGS);
+        if (after(tcb->end_seq, tp->snd_nxt) || tcb->seq == tcb->end_seq)
+                TCP_INC_STATS(TCP_MIB_OUTSEGS);
 
         err = icsk->icsk_af_ops->queue_xmit(skb, 0);
         if (likely(err <= 0))
@@ -2157,10 +2159,9 @@ int tcp_connect(struct sock *sk)
         skb_shinfo(buff)->gso_size = 0;
         skb_shinfo(buff)->gso_type = 0;
         buff->csum = 0;
+        tp->snd_nxt = tp->write_seq;
         TCP_SKB_CB(buff)->seq = tp->write_seq++;
         TCP_SKB_CB(buff)->end_seq = tp->write_seq;
-        tp->snd_nxt = tp->write_seq;
-        tp->pushed_seq = tp->write_seq;
 
         /* Send it off. */
         TCP_SKB_CB(buff)->when = tcp_time_stamp;
@@ -2170,6 +2171,12 @@ int tcp_connect(struct sock *sk)
         sk_charge_skb(sk, buff);
         tp->packets_out += tcp_skb_pcount(buff);
         tcp_transmit_skb(sk, buff, 1, GFP_KERNEL);
+
+        /* We change tp->snd_nxt after the tcp_transmit_skb() call
+         * in order to make this packet get counted in tcpOutSegs.
+         */
+        tp->snd_nxt = tp->write_seq;
+        tp->pushed_seq = tp->write_seq;
         TCP_INC_STATS(TCP_MIB_ACTIVEOPENS);
 
         /* Timer for repeating the SYN until an answer. */
diff --git a/net/ipv4/tcp_probe.c b/net/ipv4/tcp_probe.c
index b3435324b573..dab37d2f65fc 100644
--- a/net/ipv4/tcp_probe.c
+++ b/net/ipv4/tcp_probe.c
@@ -130,11 +130,12 @@ static ssize_t tcpprobe_read(struct file *file, char __user *buf,
         error = wait_event_interruptible(tcpw.wait,
                                          __kfifo_len(tcpw.fifo) != 0);
         if (error)
-                return error;
+                goto out_free;
 
         cnt = kfifo_get(tcpw.fifo, tbuf, len);
         error = copy_to_user(buf, tbuf, cnt);
 
+out_free:
         vfree(tbuf);
 
         return error ? error : cnt;