mirror of
https://github.com/AetherDroid/android_kernel_samsung_on5xelte.git
synced 2025-09-05 16:07:46 -04:00
Fixed MTP to work with TWRP
This commit is contained in:
awab228
commit
f6dfaef42e
50820 changed files with 20846062 additions and 0 deletions
270
Documentation/sysctl/net.txt
Normal file
270
Documentation/sysctl/net.txt
Normal file
|
|
@ -0,0 +1,270 @@
|
|||
Documentation for /proc/sys/net/*
|
||||
(c) 1999 Terrehon Bowden <terrehon@pacbell.net>
|
||||
Bodo Bauer <bb@ricochet.net>
|
||||
(c) 2000 Jorge Nerin <comandante@zaralinux.com>
|
||||
(c) 2009 Shen Feng <shen@cn.fujitsu.com>
|
||||
|
||||
For general info and legal blurb, please look in README.
|
||||
|
||||
==============================================================
|
||||
|
||||
This file contains the documentation for the sysctl files in
|
||||
/proc/sys/net
|
||||
|
||||
The interface to the networking parts of the kernel is located in
|
||||
/proc/sys/net. The following table shows all possible subdirectories. You may
|
||||
see only some of them, depending on your kernel's configuration.
|
||||
|
||||
|
||||
Table : Subdirectories in /proc/sys/net
|
||||
..............................................................................
|
||||
Directory Content Directory Content
|
||||
core General parameter appletalk Appletalk protocol
|
||||
unix Unix domain sockets netrom NET/ROM
|
||||
802 E802 protocol ax25 AX25
|
||||
ethernet Ethernet protocol rose X.25 PLP layer
|
||||
ipv4 IP version 4 x25 X.25 protocol
|
||||
ipx IPX token-ring IBM token ring
|
||||
bridge Bridging decnet DEC net
|
||||
ipv6 IP version 6 tipc TIPC
|
||||
..............................................................................
|
||||
|
||||
1. /proc/sys/net/core - Network core options
|
||||
-------------------------------------------------------
|
||||
|
||||
bpf_jit_enable
|
||||
--------------
|
||||
|
||||
This enables Berkeley Packet Filter Just in Time compiler.
|
||||
Currently supported on x86_64 architecture, bpf_jit provides a framework
|
||||
to speed packet filtering, the one used by tcpdump/libpcap for example.
|
||||
Values :
|
||||
0 - disable the JIT (default value)
|
||||
1 - enable the JIT
|
||||
2 - enable the JIT and ask the compiler to emit traces on kernel log.
|
||||
|
||||
dev_weight
|
||||
--------------
|
||||
|
||||
The maximum number of packets that kernel can handle on a NAPI interrupt,
|
||||
it's a Per-CPU variable.
|
||||
Default: 64
|
||||
|
||||
default_qdisc
|
||||
--------------
|
||||
|
||||
The default queuing discipline to use for network devices. This allows
|
||||
overriding the default queue discipline of pfifo_fast with an
|
||||
alternative. Since the default queuing discipline is created with the
|
||||
no additional parameters so is best suited to queuing disciplines that
|
||||
work well without configuration like stochastic fair queue (sfq),
|
||||
CoDel (codel) or fair queue CoDel (fq_codel). Don't use queuing disciplines
|
||||
like Hierarchical Token Bucket or Deficit Round Robin which require setting
|
||||
up classes and bandwidths.
|
||||
Default: pfifo_fast
|
||||
|
||||
busy_read
|
||||
----------------
|
||||
Low latency busy poll timeout for socket reads. (needs CONFIG_NET_RX_BUSY_POLL)
|
||||
Approximate time in us to busy loop waiting for packets on the device queue.
|
||||
This sets the default value of the SO_BUSY_POLL socket option.
|
||||
Can be set or overridden per socket by setting socket option SO_BUSY_POLL,
|
||||
which is the preferred method of enabling. If you need to enable the feature
|
||||
globally via sysctl, a value of 50 is recommended.
|
||||
Will increase power usage.
|
||||
Default: 0 (off)
|
||||
|
||||
busy_poll
|
||||
----------------
|
||||
Low latency busy poll timeout for poll and select. (needs CONFIG_NET_RX_BUSY_POLL)
|
||||
Approximate time in us to busy loop waiting for events.
|
||||
Recommended value depends on the number of sockets you poll on.
|
||||
For several sockets 50, for several hundreds 100.
|
||||
For more than that you probably want to use epoll.
|
||||
Note that only sockets with SO_BUSY_POLL set will be busy polled,
|
||||
so you want to either selectively set SO_BUSY_POLL on those sockets or set
|
||||
sysctl.net.busy_read globally.
|
||||
Will increase power usage.
|
||||
Default: 0 (off)
|
||||
|
||||
rmem_default
|
||||
------------
|
||||
|
||||
The default setting of the socket receive buffer in bytes.
|
||||
|
||||
rmem_max
|
||||
--------
|
||||
|
||||
The maximum receive socket buffer size in bytes.
|
||||
|
||||
wmem_default
|
||||
------------
|
||||
|
||||
The default setting (in bytes) of the socket send buffer.
|
||||
|
||||
wmem_max
|
||||
--------
|
||||
|
||||
The maximum send socket buffer size in bytes.
|
||||
|
||||
message_burst and message_cost
|
||||
------------------------------
|
||||
|
||||
These parameters are used to limit the warning messages written to the kernel
|
||||
log from the networking code. They enforce a rate limit to make a
|
||||
denial-of-service attack impossible. A higher message_cost factor, results in
|
||||
fewer messages that will be written. Message_burst controls when messages will
|
||||
be dropped. The default settings limit warning messages to one every five
|
||||
seconds.
|
||||
|
||||
warnings
|
||||
--------
|
||||
|
||||
This controls console messages from the networking stack that can occur because
|
||||
of problems on the network like duplicate address or bad checksums. Normally,
|
||||
this should be enabled, but if the problem persists the messages can be
|
||||
disabled.
|
||||
|
||||
netdev_budget
|
||||
-------------
|
||||
|
||||
Maximum number of packets taken from all interfaces in one polling cycle (NAPI
|
||||
poll). In one polling cycle interfaces which are registered to polling are
|
||||
probed in a round-robin manner.
|
||||
|
||||
netdev_max_backlog
|
||||
------------------
|
||||
|
||||
Maximum number of packets, queued on the INPUT side, when the interface
|
||||
receives packets faster than kernel can process them.
|
||||
|
||||
netdev_tstamp_prequeue
|
||||
----------------------
|
||||
|
||||
If set to 0, RX packet timestamps can be sampled after RPS processing, when
|
||||
the target CPU processes packets. It might give some delay on timestamps, but
|
||||
permit to distribute the load on several cpus.
|
||||
|
||||
If set to 1 (default), timestamps are sampled as soon as possible, before
|
||||
queueing.
|
||||
|
||||
optmem_max
|
||||
----------
|
||||
|
||||
Maximum ancillary buffer size allowed per socket. Ancillary data is a sequence
|
||||
of struct cmsghdr structures with appended data.
|
||||
|
||||
2. /proc/sys/net/unix - Parameters for Unix domain sockets
|
||||
-------------------------------------------------------
|
||||
|
||||
There is only one file in this directory.
|
||||
unix_dgram_qlen limits the max number of datagrams queued in Unix domain
|
||||
socket's buffer. It will not take effect unless PF_UNIX flag is specified.
|
||||
|
||||
|
||||
3. /proc/sys/net/ipv4 - IPV4 settings
|
||||
-------------------------------------------------------
|
||||
Please see: Documentation/networking/ip-sysctl.txt and ipvs-sysctl.txt for
|
||||
descriptions of these entries.
|
||||
|
||||
|
||||
4. Appletalk
|
||||
-------------------------------------------------------
|
||||
|
||||
The /proc/sys/net/appletalk directory holds the Appletalk configuration data
|
||||
when Appletalk is loaded. The configurable parameters are:
|
||||
|
||||
aarp-expiry-time
|
||||
----------------
|
||||
|
||||
The amount of time we keep an ARP entry before expiring it. Used to age out
|
||||
old hosts.
|
||||
|
||||
aarp-resolve-time
|
||||
-----------------
|
||||
|
||||
The amount of time we will spend trying to resolve an Appletalk address.
|
||||
|
||||
aarp-retransmit-limit
|
||||
---------------------
|
||||
|
||||
The number of times we will retransmit a query before giving up.
|
||||
|
||||
aarp-tick-time
|
||||
--------------
|
||||
|
||||
Controls the rate at which expires are checked.
|
||||
|
||||
The directory /proc/net/appletalk holds the list of active Appletalk sockets
|
||||
on a machine.
|
||||
|
||||
The fields indicate the DDP type, the local address (in network:node format)
|
||||
the remote address, the size of the transmit pending queue, the size of the
|
||||
received queue (bytes waiting for applications to read) the state and the uid
|
||||
owning the socket.
|
||||
|
||||
/proc/net/atalk_iface lists all the interfaces configured for appletalk.It
|
||||
shows the name of the interface, its Appletalk address, the network range on
|
||||
that address (or network number for phase 1 networks), and the status of the
|
||||
interface.
|
||||
|
||||
/proc/net/atalk_route lists each known network route. It lists the target
|
||||
(network) that the route leads to, the router (may be directly connected), the
|
||||
route flags, and the device the route is using.
|
||||
|
||||
|
||||
5. IPX
|
||||
-------------------------------------------------------
|
||||
|
||||
The IPX protocol has no tunable values in proc/sys/net.
|
||||
|
||||
The IPX protocol does, however, provide proc/net/ipx. This lists each IPX
|
||||
socket giving the local and remote addresses in Novell format (that is
|
||||
network:node:port). In accordance with the strange Novell tradition,
|
||||
everything but the port is in hex. Not_Connected is displayed for sockets that
|
||||
are not tied to a specific remote address. The Tx and Rx queue sizes indicate
|
||||
the number of bytes pending for transmission and reception. The state
|
||||
indicates the state the socket is in and the uid is the owning uid of the
|
||||
socket.
|
||||
|
||||
The /proc/net/ipx_interface file lists all IPX interfaces. For each interface
|
||||
it gives the network number, the node number, and indicates if the network is
|
||||
the primary network. It also indicates which device it is bound to (or
|
||||
Internal for internal networks) and the Frame Type if appropriate. Linux
|
||||
supports 802.3, 802.2, 802.2 SNAP and DIX (Blue Book) ethernet framing for
|
||||
IPX.
|
||||
|
||||
The /proc/net/ipx_route table holds a list of IPX routes. For each route it
|
||||
gives the destination network, the router node (or Directly) and the network
|
||||
address of the router (or Connected) for internal networks.
|
||||
|
||||
6. TIPC
|
||||
-------------------------------------------------------
|
||||
|
||||
tipc_rmem
|
||||
----------
|
||||
|
||||
The TIPC protocol now has a tunable for the receive memory, similar to the
|
||||
tcp_rmem - i.e. a vector of 3 INTEGERs: (min, default, max)
|
||||
|
||||
# cat /proc/sys/net/tipc/tipc_rmem
|
||||
4252725 34021800 68043600
|
||||
#
|
||||
|
||||
The max value is set to CONN_OVERLOAD_LIMIT, and the default and min values
|
||||
are scaled (shifted) versions of that same value. Note that the min value
|
||||
is not at this point in time used in any meaningful way, but the triplet is
|
||||
preserved in order to be consistent with things like tcp_rmem.
|
||||
|
||||
named_timeout
|
||||
--------------
|
||||
|
||||
TIPC name table updates are distributed asynchronously in a cluster, without
|
||||
any form of transaction handling. This means that different race scenarios are
|
||||
possible. One such is that a name withdrawal sent out by one node and received
|
||||
by another node may arrive after a second, overlapping name publication already
|
||||
has been accepted from a third node, although the conflicting updates
|
||||
originally may have been issued in the correct sequential order.
|
||||
If named_timeout is nonzero, failed topology updates will be placed on a defer
|
||||
queue until another event arrives that clears the error, or until the timeout
|
||||
expires. Value is in milliseconds.
|
||||
Loading…
Add table
Add a link
Reference in a new issue