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

[net-next-2.6.git] / net / ipv4 / tcp.c

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index cf32545287534db12c275f8ceffb1ccf31bdef9e..3e8a4dbc721b849e88fed7cb6fa32273b02017aa 100644 (file)
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -451,7 +451,8 @@ unsigned int tcp_poll(struct file *file, struct socket *sock, poll_table *wait)
                                if (sk_stream_wspace(sk) >= sk_stream_min_wspace(sk))
                                        mask |= POLLOUT | POLLWRNORM;
                        }
-               }
+               } else
+                       mask |= POLLOUT | POLLWRNORM;
 
                if (tp->urg_data & TCP_URG_VALID)
                        mask |= POLLPRI;
@@ -2011,11 +2012,8 @@ adjudge_to_death:
                }
        }
        if (sk->sk_state != TCP_CLOSE) {
-               int orphan_count = percpu_counter_read_positive(
-                                               sk->sk_prot->orphan_count);
-
                sk_mem_reclaim(sk);
-               if (tcp_too_many_orphans(sk, orphan_count)) {
+               if (tcp_too_many_orphans(sk, 0)) {
                        if (net_ratelimit())
                                printk(KERN_INFO "TCP: too many of orphaned "
                                       "sockets\n");
@@ -3221,7 +3219,7 @@ void __init tcp_init(void)
 {
        struct sk_buff *skb = NULL;
        unsigned long nr_pages, limit;
-       int order, i, max_share;
+       int i, max_share, cnt;
        unsigned long jiffy = jiffies;
 
        BUILD_BUG_ON(sizeof(struct tcp_skb_cb) > sizeof(skb->cb));
@@ -3270,22 +3268,12 @@ void __init tcp_init(void)
                INIT_HLIST_HEAD(&tcp_hashinfo.bhash[i].chain);
        }
 
-       /* Try to be a bit smarter and adjust defaults depending
-        * on available memory.
-        */
-       for (order = 0; ((1 << order) << PAGE_SHIFT) <
-                       (tcp_hashinfo.bhash_size * sizeof(struct inet_bind_hashbucket));
-                       order++)
-               ;
-       if (order >= 4) {
-               tcp_death_row.sysctl_max_tw_buckets = 180000;
-               sysctl_tcp_max_orphans = 4096 << (order - 4);
-               sysctl_max_syn_backlog = 1024;
-       } else if (order < 3) {
-               tcp_death_row.sysctl_max_tw_buckets >>= (3 - order);
-               sysctl_tcp_max_orphans >>= (3 - order);
-               sysctl_max_syn_backlog = 128;
-       }
+
+       cnt = tcp_hashinfo.ehash_mask + 1;
+
+       tcp_death_row.sysctl_max_tw_buckets = cnt / 2;
+       sysctl_tcp_max_orphans = cnt / 2;
+       sysctl_max_syn_backlog = max(128, cnt / 256);
 
        /* Set the pressure threshold to be a fraction of global memory that
         * is up to 1/2 at 256 MB, decreasing toward zero with the amount of