net: stmmac: RX queue routing configuration

[linux-2.6-block.git] / Documentation / networking / ipvs-sysctl.txt

diff --git a/Documentation/networking/ipvs-sysctl.txt b/Documentation/networking/ipvs-sysctl.txt
index e6b1c025fdd89362a40e7aa676859a3a83646e7a..056898685d408e463f1a191f36e2384e9974ab6d 100644 (file)
--- a/Documentation/networking/ipvs-sysctl.txt
+++ b/Documentation/networking/ipvs-sysctl.txt
@@ -175,6 +175,14 @@ nat_icmp_send - BOOLEAN
         for VS/NAT when the load balancer receives packets from real
         servers but the connection entries don't exist.
 
+pmtu_disc - BOOLEAN
+       0 - disabled
+       not 0 - enabled (default)
+
+       By default, reject with FRAG_NEEDED all DF packets that exceed
+       the PMTU, irrespective of the forwarding method. For TUN method
+       the flag can be disabled to fragment such packets.
+
 secure_tcp - INTEGER
         0  - disabled (default)
 
@@ -185,15 +193,59 @@ secure_tcp - INTEGER
         The value definition is the same as that of drop_entry and
         drop_packet.
 
-sync_threshold - INTEGER
-        default 3
+sync_threshold - vector of 2 INTEGERs: sync_threshold, sync_period
+       default 3 50
+
+       It sets synchronization threshold, which is the minimum number
+       of incoming packets that a connection needs to receive before
+       the connection will be synchronized. A connection will be
+       synchronized, every time the number of its incoming packets
+       modulus sync_period equals the threshold. The range of the
+       threshold is from 0 to sync_period.
+
+       When sync_period and sync_refresh_period are 0, send sync only
+       for state changes or only once when pkts matches sync_threshold
+
+sync_refresh_period - UNSIGNED INTEGER
+       default 0
+
+       In seconds, difference in reported connection timer that triggers
+       new sync message. It can be used to avoid sync messages for the
+       specified period (or half of the connection timeout if it is lower)
+       if connection state is not changed since last sync.
+
+       This is useful for normal connections with high traffic to reduce
+       sync rate. Additionally, retry sync_retries times with period of
+       sync_refresh_period/8.
+
+sync_retries - INTEGER
+       default 0
+
+       Defines sync retries with period of sync_refresh_period/8. Useful
+       to protect against loss of sync messages. The range of the
+       sync_retries is from 0 to 3.
+
+sync_qlen_max - UNSIGNED LONG
+
+       Hard limit for queued sync messages that are not sent yet. It
+       defaults to 1/32 of the memory pages but actually represents
+       number of messages. It will protect us from allocating large
+       parts of memory when the sending rate is lower than the queuing
+       rate.
+
+sync_sock_size - INTEGER
+       default 0
+
+       Configuration of SNDBUF (master) or RCVBUF (slave) socket limit.
+       Default value is 0 (preserve system defaults).
+
+sync_ports - INTEGER
+       default 1
 
-        It sets synchronization threshold, which is the minimum number
-        of incoming packets that a connection needs to receive before
-        the connection will be synchronized. A connection will be
-        synchronized, every time the number of its incoming packets
-        modulus 50 equals the threshold. The range of the threshold is
-        from 0 to 49.
+       The number of threads that master and backup servers can use for
+       sync traffic. Every thread will use single UDP port, thread 0 will
+       use the default port 8848 while last thread will use port
+       8848+sync_ports-1.
 
 snat_reroute - BOOLEAN
        0 - disabled