Merge branch 'master' of master.kernel.org:/pub/scm/linux/kernel/git/davem/net-2.6

Conflicts:
	drivers/net/e1000/e1000_main.c

3 files changed, 44 insertions, 20 deletions

diff --git a/net/ipv4/ipconfig.c b/net/ipv4/ipconfig.c
index 42a0f3dd3fd6..d722013c1cae 100644
--- a/net/ipv4/ipconfig.c
+++ b/net/ipv4/ipconfig.c
@@ -1268,6 +1268,9 @@ __be32 __init root_nfs_parse_addr(char *name)
 static int __init ip_auto_config(void)
 {
         __be32 addr;
+#ifdef IPCONFIG_DYNAMIC
+        int retries = CONF_OPEN_RETRIES;
+#endif
 
 #ifdef CONFIG_PROC_FS
         proc_net_fops_create(&init_net, "pnp", S_IRUGO, &pnp_seq_fops);
@@ -1304,9 +1307,6 @@ static int __init ip_auto_config(void)
 #endif
             ic_first_dev->next) {
 #ifdef IPCONFIG_DYNAMIC
-
-                int retries = CONF_OPEN_RETRIES;
-
                 if (ic_dynamic() < 0) {
                         ic_close_devs();
 
diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index 1cd608253940..73266b79c19a 100644
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -524,7 +524,8 @@ static int tcp_splice_data_recv(read_descriptor_t *rd_desc, struct sk_buff *skb,
         struct tcp_splice_state *tss = rd_desc->arg.data;
         int ret;
 
-        ret = skb_splice_bits(skb, offset, tss->pipe, rd_desc->count, tss->flags);
+        ret = skb_splice_bits(skb, offset, tss->pipe, min(rd_desc->count, len),
+                              tss->flags);
         if (ret > 0)
                 rd_desc->count -= ret;
         return ret;
diff --git a/net/ipv4/udp.c b/net/ipv4/udp.c
index cf5ab0581eba..b7faffe5c029 100644
--- a/net/ipv4/udp.c
+++ b/net/ipv4/udp.c
@@ -120,8 +120,11 @@ EXPORT_SYMBOL(sysctl_udp_wmem_min);
 atomic_t udp_memory_allocated;
 EXPORT_SYMBOL(udp_memory_allocated);
 
+#define PORTS_PER_CHAIN (65536 / UDP_HTABLE_SIZE)
+
 static int udp_lib_lport_inuse(struct net *net, __u16 num,
                                const struct udp_hslot *hslot,
+                               unsigned long *bitmap,
                                struct sock *sk,
                                int (*saddr_comp)(const struct sock *sk1,
                                                  const struct sock *sk2))
@@ -132,12 +135,17 @@ static int udp_lib_lport_inuse(struct net *net, __u16 num,
         sk_nulls_for_each(sk2, node, &hslot->head)
                 if (net_eq(sock_net(sk2), net)                  &&
                     sk2 != sk                                   &&
-                    sk2->sk_hash == num                         &&
+                    (bitmap || sk2->sk_hash == num)             &&
                     (!sk2->sk_reuse || !sk->sk_reuse)           &&
                     (!sk2->sk_bound_dev_if || !sk->sk_bound_dev_if
                         || sk2->sk_bound_dev_if == sk->sk_bound_dev_if) &&
-                    (*saddr_comp)(sk, sk2))
-                        return 1;
+                    (*saddr_comp)(sk, sk2)) {
+                        if (bitmap)
+                                __set_bit(sk2->sk_hash / UDP_HTABLE_SIZE,
+                                          bitmap);
+                        else
+                                return 1;
+                }
         return 0;
 }
 
@@ -160,32 +168,47 @@ int udp_lib_get_port(struct sock *sk, unsigned short snum,
         if (!snum) {
                 int low, high, remaining;
                 unsigned rand;
-                unsigned short first;
+                unsigned short first, last;
+                DECLARE_BITMAP(bitmap, PORTS_PER_CHAIN);
 
                 inet_get_local_port_range(&low, &high);
                 remaining = (high - low) + 1;
 
                 rand = net_random();
-                snum = first = rand % remaining + low;
-                rand |= 1;
-                for (;;) {
-                        hslot = &udptable->hash[udp_hashfn(net, snum)];
+                first = (((u64)rand * remaining) >> 32) + low;
+                /*
+                 * force rand to be an odd multiple of UDP_HTABLE_SIZE
+                 */
+                rand = (rand | 1) * UDP_HTABLE_SIZE;
+                for (last = first + UDP_HTABLE_SIZE; first != last; first++) {
+                        hslot = &udptable->hash[udp_hashfn(net, first)];
+                        bitmap_zero(bitmap, PORTS_PER_CHAIN);
                         spin_lock_bh(&hslot->lock);
-                        if (!udp_lib_lport_inuse(net, snum, hslot, sk, saddr_comp))
-                                break;
-                        spin_unlock_bh(&hslot->lock);
+                        udp_lib_lport_inuse(net, snum, hslot, bitmap, sk,
+                                            saddr_comp);
+
+                        snum = first;
+                        /*
+                         * Iterate on all possible values of snum for this hash.
+                         * Using steps of an odd multiple of UDP_HTABLE_SIZE
+                         * give us randomization and full range coverage.
+                         */
                         do {
-                                snum = snum + rand;
-                        } while (snum < low || snum > high);
-                        if (snum == first)
-                                goto fail;
+                                if (low <= snum && snum <= high &&
+                                    !test_bit(snum / UDP_HTABLE_SIZE, bitmap))
+                                        goto found;
+                                snum += rand;
+                        } while (snum != first);
+                        spin_unlock_bh(&hslot->lock);
                 }
+                goto fail;
         } else {
                 hslot = &udptable->hash[udp_hashfn(net, snum)];
                 spin_lock_bh(&hslot->lock);
-                if (udp_lib_lport_inuse(net, snum, hslot, sk, saddr_comp))
+                if (udp_lib_lport_inuse(net, snum, hslot, NULL, sk, saddr_comp))
                         goto fail_unlock;
         }
+found:
         inet_sk(sk)->num = snum;
         sk->sk_hash = snum;
         if (sk_unhashed(sk)) {