tcp: Make TCP_MAXSEG minimum more correct.

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

diff --git a/net/ipv4/tcp.c b/net/ipv4/tcp.c
index f115ea6..f15c36a 100644 (file)
--- a/net/ipv4/tcp.c
+++ b/net/ipv4/tcp.c
@@ -282,7 +282,7 @@ int sysctl_tcp_fin_timeout __read_mostly = TCP_FIN_TIMEOUT;
 struct percpu_counter tcp_orphan_count;
 EXPORT_SYMBOL_GPL(tcp_orphan_count);
 
-int sysctl_tcp_mem[3] __read_mostly;
+long sysctl_tcp_mem[3] __read_mostly;
 int sysctl_tcp_wmem[3] __read_mostly;
 int sysctl_tcp_rmem[3] __read_mostly;
 
@@ -290,7 +290,7 @@ EXPORT_SYMBOL(sysctl_tcp_mem);
 EXPORT_SYMBOL(sysctl_tcp_rmem);
 EXPORT_SYMBOL(sysctl_tcp_wmem);
 
-atomic_t tcp_memory_allocated; /* Current allocated memory. */
+atomic_long_t tcp_memory_allocated;    /* Current allocated memory. */
 EXPORT_SYMBOL(tcp_memory_allocated);
 
 /*
@@ -2246,7 +2246,7 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
                /* Values greater than interface MTU won't take effect. However
                 * at the point when this call is done we typically don't yet
                 * know which interface is going to be used */
-               if (val < 8 || val > MAX_TCP_WINDOW) {
+               if (val < TCP_MIN_MSS || val > MAX_TCP_WINDOW) {
                        err = -EINVAL;
                        break;
                }
@@ -2392,7 +2392,12 @@ static int do_tcp_setsockopt(struct sock *sk, int level,
                err = tp->af_specific->md5_parse(sk, optval, optlen);
                break;
 #endif
-
+       case TCP_USER_TIMEOUT:
+               /* Cap the max timeout in ms TCP will retry/retrans
+                * before giving up and aborting (ETIMEDOUT) a connection.
+                */
+               icsk->icsk_user_timeout = msecs_to_jiffies(val);
+               break;
        default:
                err = -ENOPROTOOPT;
                break;
@@ -2611,6 +2616,10 @@ static int do_tcp_getsockopt(struct sock *sk, int level,
        case TCP_THIN_DUPACK:
                val = tp->thin_dupack;
                break;
+
+       case TCP_USER_TIMEOUT:
+               val = jiffies_to_msecs(icsk->icsk_user_timeout);
+               break;
        default:
                return -ENOPROTOOPT;
        }