Merge branch 'x86-fixes-for-linus' of git://git.kernel.org/pub/scm/linux/kernel/git...

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

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index ab66683..850825d 100644 (file)
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -260,6 +260,8 @@
 #include <linux/socket.h>
 #include <linux/random.h>
 #include <linux/bootmem.h>
+#include <linux/highmem.h>
+#include <linux/swap.h>
 #include <linux/cache.h>
 #include <linux/err.h>
 #include <linux/crypto.h>
@@ -2112,12 +2114,15 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
                break;
 
        case TCP_DEFER_ACCEPT:
-               if (val < 0) {
-                       err = -EINVAL;
-               } else {
-                       if (val > MAX_TCP_ACCEPT_DEFERRED)
-                               val = MAX_TCP_ACCEPT_DEFERRED;
-                       icsk->icsk_accept_queue.rskq_defer_accept = val;
+               icsk->icsk_accept_queue.rskq_defer_accept = 0;
+               if (val > 0) {
+                       /* Translate value in seconds to number of
+                        * retransmits */
+                       while (icsk->icsk_accept_queue.rskq_defer_accept < 32 &&
+                              val > ((TCP_TIMEOUT_INIT / HZ) <<
+                                      icsk->icsk_accept_queue.rskq_defer_accept))
+                               icsk->icsk_accept_queue.rskq_defer_accept++;
+                       icsk->icsk_accept_queue.rskq_defer_accept++;
                }
                break;
 
@@ -2299,7 +2304,8 @@ static int do_tcp_getsockopt(struct sock *sk, int level,
                        val = (val ? : sysctl_tcp_fin_timeout) / HZ;
                break;
        case TCP_DEFER_ACCEPT:
-               val = icsk->icsk_accept_queue.rskq_defer_accept;
+               val = !icsk->icsk_accept_queue.rskq_defer_accept ? 0 :
+                       ((TCP_TIMEOUT_INIT / HZ) << (icsk->icsk_accept_queue.rskq_defer_accept - 1));
                break;
        case TCP_WINDOW_CLAMP:
                val = tp->window_clamp;
@@ -2616,7 +2622,7 @@ __setup("thash_entries=", set_thash_entries);
 void __init tcp_init(void)
 {
        struct sk_buff *skb = NULL;
-       unsigned long limit;
+       unsigned long nr_pages, limit;
        int order, i, max_share;
 
        BUILD_BUG_ON(sizeof(struct tcp_skb_cb) > sizeof(skb->cb));
@@ -2685,8 +2691,9 @@ void __init tcp_init(void)
         * is up to 1/2 at 256 MB, decreasing toward zero with the amount of
         * memory, with a floor of 128 pages.
         */
-       limit = min(nr_all_pages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
-       limit = (limit * (nr_all_pages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
+       nr_pages = totalram_pages - totalhigh_pages;
+       limit = min(nr_pages, 1UL<<(28-PAGE_SHIFT)) >> (20-PAGE_SHIFT);
+       limit = (limit * (nr_pages >> (20-PAGE_SHIFT))) >> (PAGE_SHIFT-11);
        limit = max(limit, 128UL);
        sysctl_tcp_mem[0] = limit / 4 * 3;
        sysctl_tcp_mem[1] = limit;