[MIPS] Update docs to reflect the latest status of the Alchemy IDE driver.

[powerpc.git] / Documentation / networking / ip-sysctl.txt

diff --git a/Documentation/networking/ip-sysctl.txt b/Documentation/networking/ip-sysctl.txt
index 65895bb..26364d0 100644 (file)
--- a/Documentation/networking/ip-sysctl.txt
+++ b/Documentation/networking/ip-sysctl.txt
@@ -46,6 +46,29 @@ ipfrag_secret_interval - INTEGER
        for the hash secret) for IP fragments.
        Default: 600
 
+ipfrag_max_dist - INTEGER
+       ipfrag_max_dist is a non-negative integer value which defines the 
+       maximum "disorder" which is allowed among fragments which share a 
+       common IP source address. Note that reordering of packets is 
+       not unusual, but if a large number of fragments arrive from a source 
+       IP address while a particular fragment queue remains incomplete, it 
+       probably indicates that one or more fragments belonging to that queue 
+       have been lost. When ipfrag_max_dist is positive, an additional check 
+       is done on fragments before they are added to a reassembly queue - if 
+       ipfrag_max_dist (or more) fragments have arrived from a particular IP 
+       address between additions to any IP fragment queue using that source 
+       address, it's presumed that one or more fragments in the queue are 
+       lost. The existing fragment queue will be dropped, and a new one 
+       started. An ipfrag_max_dist value of zero disables this check.
+
+       Using a very small value, e.g. 1 or 2, for ipfrag_max_dist can
+       result in unnecessarily dropping fragment queues when normal
+       reordering of packets occurs, which could lead to poor application 
+       performance. Using a very large value, e.g. 50000, increases the 
+       likelihood of incorrectly reassembling IP fragments that originate 
+       from different IP datagrams, which could result in data corruption.
+       Default: 64
+
 INET peer storage:
 
 inet_peer_threshold - INTEGER
@@ -78,6 +101,11 @@ inet_peer_gc_maxtime - INTEGER
 
 TCP variables: 
 
+tcp_abc - INTEGER
+       Controls Appropriate Byte Count defined in RFC3465. If set to
+       0 then does congestion avoid once per ack. 1 is conservative
+       value, and 2 is more agressive.
+
 tcp_syn_retries - INTEGER
        Number of times initial SYNs for an active TCP connection attempt
        will be retransmitted. Should not be higher than 255. Default value
@@ -399,6 +427,23 @@ icmp_ignore_bogus_error_responses - BOOLEAN
        will avoid log file clutter.
        Default: FALSE
 
+icmp_errors_use_inbound_ifaddr - BOOLEAN
+
+       If zero, icmp error messages are sent with the primary address of
+       the exiting interface.
+ 
+       If non-zero, the message will be sent with the primary address of
+       the interface that received the packet that caused the icmp error.
+       This is the behaviour network many administrators will expect from
+       a router. And it can make debugging complicated network layouts
+       much easier. 
+
+       Note that if no primary address exists for the interface selected,
+       then the primary address of the first non-loopback interface that
+       has one will be used regarldess of this setting.
+
+       Default: 0
+
 igmp_max_memberships - INTEGER
        Change the maximum number of multicast groups we can subscribe to.
        Default: 20