TCP: Remove overridden default buffer size.

The default of 65535 now seems to work OK,
following previous commits.

tcp: reset receive.low_water_mark when nothing to read anymore

the socket interface module checks the receive.low_water_mark to automatically
notify a read event. available_data will be zero, thus enabling the notification.

fixes the test poll_nm in NSPR.

Change-Id: I5354faec439df96671506550cdb144a45f6082b1
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4820
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

tcp: combine timestamp and sack_permitted options when possible

any ordering is legal, but some devices don't cope with what we do.
thus we reorder sack_permitted before timestamp, this doesn't cost us anything.
noticed by Sikk: https://dev.haiku-os.org/ticket/13681#comment:11

Change-Id: Ic2e1589945dd74e3034a653427a2ff45626b3a76
Reviewed-on: https://review.haiku-os.org/c/haiku/+/4598
Tested-by: Commit checker robot <no-reply+buildbot@haiku-os.org>
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

tcp: several fixes for SACK handling:

* kMaxOptionSize: TCP header size is 60 bytes. process_options() would have
accepted a longer header as permitted. add_options() would have possibly added
more options or SACK entries as permitted.
* tcp_segment: reserve memory for sack entries.
* _SendQueued(): "fLastAcknowledgeSent <= fReceiveNext": also send SACK entries
for received data when acknowledging a missing segment.
* _SendQueue(): after acknowledging, cancel the delayed acknowledgment timer.
* _Receive(): if calling Acknowledged() already triggered sending a segment
including an acknowledgement (piggy-back), remove "immediate acknowledge"
from the action. This helps to reduce empty ACKs for bidirectional streams.

Change-Id: I32808fbe549be0f5b25bcf4be17cd91a640b8ec4
Reviewed-on: https://review.haiku-os.org/c/haiku/+/3906
Reviewed-by: Adrien Destugues <pulkomandy@gmail.com>

tcp: rfc 2018: implemented SACK option

Change-Id: I269ad2682446c4d37bae21dcf9f3036de964ff2c
Reviewed-on: https://review.haiku-os.org/c/haiku/+/53
Reviewed-by: Jérôme Duval <jerome.duval@gmail.com>

tcp: Don't skip TIME_WAIT state for loopback sockets

This fixes a SEGFAULT in the tcp add-on reported in issue #15952. See
that issue for some analysis.

The short version is that, when closing a session over the loopback
interface, there is a special branch which skips the TIME_WAIT state
and instead just releases the socket while handling a RST/ACK
segment. If the timing is right this can lead to the reference
counts becoming imbalanced, leading to the code in tcp_receive_data
segfaulting when it tries to release the reference it acquired from
EndpointManager::FindConnection.

I can't find any other systems which skip the TIME_WAIT state with
loopback sessions, and I'm not entirely certain that it's a totally
safe thing to do anyway. This patch instead just treats local sessions
the same way it does a remote session and uses the TIME_WAIT state.

Any workload which creates and discards lots of ephemeral sockets can
just use SO_REUSEADDR to handle this situation like any other system.

To add a final bit of safety, the only place where a net_socket can be
used after calling gSocketModule->release_socket(net_socket*) is in
tcp_receive_data(). release_socket() returns true if the reference
count falls to zero, deleting the socket. There was an unused segment
action flag DELETE_ENDPOINT that I renamed to DELETED_ENDPOINT, which
is used by tcp_receive_data to know whether its safe to release its
reference to the socket after calling TCPEndpoint::SegmentReceived().

Change-Id: I2652fb225c3c8419234cfd627f74ff2de8402003
Reviewed-on: https://review.haiku-os.org/c/haiku/+/2793
Reviewed-by: Axel Dörfler <axeld@pinc-software.de>
Reviewed-by: waddlesplash <waddlesplash@gmail.com>

More trivial syntax and logic cleanup.

Spotted by Clang. No functional change intended.

Revert "tcp: rfc 2018: implemented SACK option"

This reverts commit 5c31f5a67a0aa37c8f2a1464252b2c5b0a959f33.

tcp: rfc 2018: implemented SACK option

Signed-off-by: Jessica Hamilton <jessica.l.hamilton@gmail.com>

tcp: rfc 7323: added PAWS timestamp check on Receive

Signed-off-by: Jessica Hamilton <jessica.l.hamilton@gmail.com>

Revert "Check needs extra paranthesis to aviod ambiguity."

This reverts commit 4e219110d4becb28907b6840cbf4f7914a5e7c43.
The commit also added the mask that caused ambiguity.
It shouldn't be there.

Check needs extra paranthesis to aviod ambiguity.

Build fails with an ambiguity warning on x86_64 cross compile otherwise.

* Applied kaliber's patch part of ticket #6789, thanks! This makes the code not
only more readable, but also working correctly.
* Solved the problem stippi outlined differently, by checking whether length is
greater size for unsupported options.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39311 a95241bf-73f2-0310-859d-f6bbb57e9c96

I don't understand much about the code in question, but the ticket #6789
hints at a possible problem: Within the process_options() function, the
code does not make sure that size is a multiple of the option length
(unless I missed something) and thus the loop could wrap the unsigned
size variable, and not exit as intended. Make size an ssize_t and cast
where appropriate, after making sure it's initially a positive value.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39309 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Finished groundwork on ICMP by introducing a completely protocol agnostic
error mechanism.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37896 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Reworked the complete stack to allow more than one address per network
interface - this caused quite a number of changes.
* Network interfaces, and its addresses are now reference counted (not yet
complete, though, InterfaceAddresses need to hold references to their
interface as well).
* There are two known regressions of this commit that I will fix later:
- you cannot remove interfaces anymore
- IPv4 multicast was broken anyway, but now it's disabled, too.
* Moved a device_interfaces.cpp|h out of interfaces.cpp.
* The datalink layer chain is now instantiated per domain per interface,
not just per interface anymore.
* When a buffer reaches the network layer, it has no known interface yet, ie.
the ipv4|6|whatever modules need to set this manually.
* Added more debug output, and some new debugger commands, the control option
is now printed in clear text.
* Added hash_address() function to the address modules. Added "const" to
set_to_defaults() where needed.
* Fixed net_buffer's restore header functions offset use as reported by Atis.
* Improved buffer dump output, use the domain module to print the address if
available.
* Moved net_buffer::type into the union, as it's not needed by the upper layers
anymore.
* Moved IPv6 specific code from {add|remove}_default_route() to where it
belongs, but disabled it for the time being.
* Completely discarded useless ipv4_datagram module.
* Added ping6 to the build.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37794 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Applied next work in progress patch by Atis that takes into account most of
my comments so far. Thanks!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37793 a95241bf-73f2-0310-859d-f6bbb57e9c96

Applied patch by Ma Jie adding functionality needed by mDNSResponder:
* added new protocol method process_ancillary_data_no_container() that does not
need a container to fill the cmsghdr data.
* Added support for the IP_RECVDSTADDR option using this call.
* Implemented support for IP_MULTICAST_IF.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31585 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Added missing hooks with a description of what's missing for clarity.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31077 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Sockets now inherit from WeakReferenceable.
* This fixes the problem when a socket changes something with regards to its
parent.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30000 a95241bf-73f2-0310-859d-f6bbb57e9c96

* No longer leaks the EndpointManagers at unload.
* Now uses an array instead of a doubly linked list to find the endpoint
manager for a domain.
* No longer locks the endpoint managers during TCP processing, which actually
made all TCP input serialized.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29210 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Replaced the useless InitCheck() method in {Open,Multi}HashTable (it
always returned B_OK) by a Init() method, which sets the initial size
and returns an error, if that fails.
* Adjusted code using the classes accordingly. Replaced a few
InitCheck() methods in the network code by Init().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26127 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Removed old mutex implementation and renamed cutex to mutex.
* Trivial adjustments of code using mutexes. Mostly removing the
mutex_init() return value check.
* Added mutex_lock_threads_locked(), which is called with the threads
spinlock being held. The spinlock is released while waiting, of
course. This function is useful in cases where the existence of the
mutex object is ensured by holding the threads spinlock.
* Changed the two instances in the VFS code where an IO context of
another team needs to be locked to use mutex_lock_threads_locked().
Before it required a semaphore-based mutex implementation.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25283 a95241bf-73f2-0310-859d-f6bbb57e9c96

* tcp_header::urgent_offset must be set in network byte order as well.
* Cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25243 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Added TCPEndpoint::GetOption(), currently only supports TCP_NODELAY, and
TCP_MAXSEG.
* Note, TCP_MAXSEG cannot be set yet.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25241 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Merged _Receive() and _SegmentReceived().
* Cleanup, shuffled methods around, renamed methods, etc. - no functional changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25223 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Added flags field in net_protocol_module_info; there is currently a single
defined flag: NET_PROTOCOL_ATOMIC_MESSAGES.
* socket_send() now honours NET_PROTOCOL_ATOMIC_MESSAGES and returns either
EMSGSIZE if the data to be send is larger than net_socket::send::buffer_size,
or divides the data in appropriately sized chunks.
* This fixes sending >=64K over a TCP socket at once (TCP would just have
returned an error in that case).
* TCP now overrides the default send buffer size (to 32768 for now).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23915 a95241bf-73f2-0310-859d-f6bbb57e9c96

* If a new buffer had its last part in common with an existing larger buffer,
BufferQueue::Add() tried to remove a negative amount of bytes. This could
bring a download to a complete halt (as could the other one due to the list
link mixup).
* While the RTT computation still seems to work not that good (with a drop quote
of 50% I would easily reach retransmit timeouts of 80 secs), TCP should now
work a lot better on a flaky connection.
* Renamed _GetMSS() to _MaxSegmentSize().
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22677 a95241bf-73f2-0310-859d-f6bbb57e9c96

* int32_t, uint32_t are now of type "int", and no longer of type "long".
This should help to reduce the number of warnings imported code will throw
during compilation (helps a lot with tcpdump, for example).
* Since long is 64 bit on 64 bit platforms, we might want to think about doing
that change for the Haiku types int32 and uint32 as well.
* Fixed several occurences of hidden type problems.
* Fixed build of the stack and TCP under BeOS.
* Fixed incorrect typedef in socket_interface.h.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22643 a95241bf-73f2-0310-859d-f6bbb57e9c96

tcp: no longer need recursive locking.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21216 a95241bf-73f2-0310-859d-f6bbb57e9c96

net_buffer: preparing for better metadata management


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21210 a95241bf-73f2-0310-859d-f6bbb57e9c96

TCP: getsockopt was missing. fixes #1225


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21176 a95241bf-73f2-0310-859d-f6bbb57e9c96

tcp: allow TCP_NODELAY to be set


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21069 a95241bf-73f2-0310-859d-f6bbb57e9c96

use a appropriate naming for structure fields.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21016 a95241bf-73f2-0310-859d-f6bbb57e9c96

renamed TCP's TSval/TSecr


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21014 a95241bf-73f2-0310-859d-f6bbb57e9c96

added 'tcp_endpoints' and 'tcp_endpoint' debugger commands.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20909 a95241bf-73f2-0310-859d-f6bbb57e9c96

fixed a nice C-induced issue which was making us rewrite stuff.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20823 a95241bf-73f2-0310-859d-f6bbb57e9c96

added Recv-Q/Send-Q output to netstat.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20819 a95241bf-73f2-0310-859d-f6bbb57e9c96

partially rewrote TCP's endpoint manager. Fixes #1173


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20814 a95241bf-73f2-0310-859d-f6bbb57e9c96

TCP: added SACK definitions and option processing.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20775 a95241bf-73f2-0310-859d-f6bbb57e9c96

check option length when processing TCP options.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20774 a95241bf-73f2-0310-859d-f6bbb57e9c96

some internal reorganization of getsockopt()/setsockopt() handling. TCP is now able to fully use the application requested sender/receiver buffer sizes for improved performance.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20764 a95241bf-73f2-0310-859d-f6bbb57e9c96

some TCP performance improvements.

- support TCP fast retransmit/fast recovery.
- maintain the RTT average time and update the retransmit timeout accordingly.
- improvements to TCP Slow start / congestion avoidance.
- better handling of the retransmission timer.
- properly size segments taking the TCP options length into consideration.
- as an interim fix, update the SendQ/RecvQ sizes on Connect().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20748 a95241bf-73f2-0310-859d-f6bbb57e9c96

assorted TCP fixes.

- fixed the locking for spawned connections and accept()s.
- return EMSGSIZE if the user is trying to write more data than the send buffer can hold.
- fixed a crash when receiving a RST while the connection is being closed.
- don't wake up readers when the connection gets established.
- endpoint managers lock must be recursive to properly work with spawn'ed sockets.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20727 a95241bf-73f2-0310-859d-f6bbb57e9c96

support RFC 1323's TCP Timestamps (we are still not updating our estimator though).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20719 a95241bf-73f2-0310-859d-f6bbb57e9c96

made TCP handle multiple domains.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20718 a95241bf-73f2-0310-859d-f6bbb57e9c96

introduced Checksum::PseudoHeader helper.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20717 a95241bf-73f2-0310-859d-f6bbb57e9c96

glued the multicast filter handling to the receive path: we are now capable of receiving multicast frames in datagram sockets.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20695 a95241bf-73f2-0310-859d-f6bbb57e9c96

use module_dependencies to load the required modules by udp, tcp, ipv4, icmp and arp.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20676 a95241bf-73f2-0310-859d-f6bbb57e9c96

added buffer, datalink and socket module references to the stack module so we don't have to load them in each other module.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20673 a95241bf-73f2-0310-859d-f6bbb57e9c96

moved address selection logic to a new 'get_buffer_route'.

- IPv4 now assumes the addresses it is supplied in send_routed_data are already the appropriate ones.
- made the Data(), operator* and operator-> methods in NetBufferFieldReader const so we can use them in the same expression as the constructor.
- fixed an issue with UDP where the wrong source address could be used in the calculating the checksum.
- changed ipv4_print_address to use the more common 0.0.0.0 format.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20660 a95241bf-73f2-0310-859d-f6bbb57e9c96

some NetBufferUtility revamp.

- introduced base NetBufferFieldReader which deals with obtaining a continuguous field to deal with.
- renamed Detach() to Sync() to better express the fact that we may be writing to the buffer.
- Fixed IPv4's and ICMP's checksum calculation as it assumed the underlying header was contiguous.
- ICMP is now able to reply to ICMP Echo Requests which were split across data nodes.
- in split_buffer(), make sure we were able to trim() the new buffer before damaging the original one.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20657 a95241bf-73f2-0310-859d-f6bbb57e9c96

fixed add_tcp_header() as it wasn't considering the possibility that prepending data would not result in a contiguous buffer. This would result in wrong checksums for apparent no reason.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20643 a95241bf-73f2-0310-859d-f6bbb57e9c96

fixed multiple TCP issues.

- Moved FIN handling to after Segment Text handling, it matches the RFC and fixes a possible issue with a user missing some final segment data when receiving a FIN.
- Fixed the FIN handling to better terminate connections (no more senseless chatter in the end with RSTs etc).
- When Bind()ing, set the socket address so a call to getsockname() gets the allocated port correctly.
- After reaching the ESTABLISHED state, try to wake all pending threads (still needs work).
- Corrected the maximum amount of time we wait in SendData() to respect socket->send.timeout.
- Now ReadData() behaves correctly in all possible states.
- There was a missing handling of MSG_DONTWAIT, fixed.
- Better internal handling of PSH.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20624 a95241bf-73f2-0310-859d-f6bbb57e9c96

fixed another TCP issue: if we were in TIME_WAIT and we received a retransmission or delayed ack, TCP would wrongly bindly immediatly acknowledge.

* Moved TIME_WAIT and CLOSED handling to common Receive() path that does Sequence checking and further tests.
* Moved setting FLAG_NO_RECEIVE to the end of Receive() when FIN is set so we can check for NO_RECEIVE before processing the segment text just after processing FIN.
* Added a new action DELETE to be used when in TIME_WAIT and we receive a good RST


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20572 a95241bf-73f2-0310-859d-f6bbb57e9c96

Calmed down the networking stack a lot - since it basically works, there is no
reason to slow it down with debug output that much; this will also help investigating
some issues where you just aren't interested in most of the output.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19672 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added some more (optional) debug output.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19665 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Implemented a basic infrastructure for a netstat command.
* Started a netstat command.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19560 a95241bf-73f2-0310-859d-f6bbb57e9c96

Now use a random (based on system_time()) initial sequence number - this also
revealed a bug in the recognition of faulty SYNs.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19419 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed class TCPConnection to TCPEndpoint.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19418 a95241bf-73f2-0310-859d-f6bbb57e9c96

Rewrote how bind() works:
* there are now two hash tables: one for connections, and one for ports
* the first one is used to find the endpoint for incoming connections
* the latter is used to check if the address to bind() to is still available
(incl. support for SO_REUSEADDR, and SO_REUSEPORT). Specialising an existing
socket is not allowed, though; wildcard sockets need to be started last.
* the TCPConnection class now has a pointer to the next endpoint with the
same port number - this list is scanned for the existing bound sockets
on that port.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19416 a95241bf-73f2-0310-859d-f6bbb57e9c96

* If you send more than the maximum buffer size at once, TCP will now block
until it could send all the data.
* The window shift option can now also be send if the actual option is zero to
indicate we support this option.
* If the window shift is not specified, we'll fall back to 0 for our receive
window as well now.
* _SendQueued() now resets the segment options after SYN.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19407 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Reintroduced the accept semaphore: it will be inherited by the new connections
of a LISTEN socket.
* Reading data should now more or less work, too.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19401 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Renamed _SendQueuedData() to _SendQueued(), and made it independent from the
"flags" parameter - this can't be used with retransmitting anyway, and since
the flags are actually fixed per state, the previous solution didn't really
make much sense.
* Made _SendQueued() work a lot more like BSD's tcp_output().
* We can now send even large buffers that need more than one segment at once.
* Added a simple recursive locking mechanism for now - this should be done
differently, though, as we want to have good performance in full duplex mode.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19384 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some more work-in-progress:
* the TCPConnection::Receive() method is now more or less working as it should;
of course, there are a number of missing things (like round-trip time estimation,
retransmit timers, receive window update, ...).
* reply_with_reset() was broken, and accidently always send the segment it should
answer with reset... (causing an endless loop during connect)
* BufferQueue::RemoveUntil() must always set the fFirstSequence member to the new
sequence, or you will never be able to send anything with that queue (as the
data in it would be no longer contiguous).
* connects, sendings (only single segments), and receiving data is working now
basically (but very incomplete); retransmits or even subsequent transmits (if
the data to be sent doesn't fit in one segment) doesn't work yet, so you better
don't lose any segments :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19378 a95241bf-73f2-0310-859d-f6bbb57e9c96

Work-in-progress on TCP:
* Changed the implementation to be more BSD like; state variables are now
the same set as usual.
* The BufferQueue didn't use the initial sequence correctly (problems with
SYN sequence).
* It now also removes data out of the current data set (ie. data that was
already read by the application).
* BufferQueue::Get() also didn't work correctly (the version used by sending
data).
* Fixed various issues around the code like incorrect handling of unexpected
data.
* TCP options don't need the end-of-options marker in case they fill up the
data already, also, the end-of-options marker doesn't need to be padded.
* Options are now only processed during SYN - other options may come
later (timestamps are candidate number one).
* Also broke what was working before: connections do no longer work!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19376 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added more than one option was broken.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19371 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Implemented adding/processing TCP options; so far only "max segment size" (MSS)
is really supported.
* Added TCP option fields to the tcp_segment_header structure - they are filled
in on receive, and add_tcp_header() now gets a tcp_segment_header as well, and
will add any options automatically.
* Fixed some minor bugs (connection with passive open had wrong state after connect).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19333 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Big rework of TCP - doesn't have any additional features yet, though, even
though it can now connect to itself (and should, in theory, also be able
to connect to other TCP implemenations).
* Separated the big state machine from ReceiveData() into several smaller sized
methods.
* Moved reset and acknowledgement handling for all kind of receives to a common
place in tcp_receive_data().
* Removed locking for now - the previous locking approach was wrong due to a
number of reasons: the previous version deadlocked when it had to connect
locally, and it also didn't take into account that TCP is a full-duplex
protocol; it's not wise to only be able to manage one direction at a time
if that's not really needed.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19329 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Some cleanup, renamed some flags/constants to be a bit clearer (even though the states
now deviate from what other use to have, ie. FreeBSD).
* Replaced macros with inline methods.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19215 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Moved the TCPConnection class into its own file.
* Added some missing result checks, mostly for allocations.
* Fixed a wrong precendence with the ?: operator
* Some minor cleanup.
* Renamed sBufferModule to gBufferModule - the header expects it to be a global,
so it should be named like one.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19178 a95241bf-73f2-0310-859d-f6bbb57e9c96

Sending data over TCP should work now. Receiving is still MIA.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19007 a95241bf-73f2-0310-859d-f6bbb57e9c96

The full TCP state machine should be working now, with the exception of the LISTEN state. It cannot yet transfer data though - that will be implemented next. Connections are only made from port 40000 though, ephemeral ports are not yet implemented.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18729 a95241bf-73f2-0310-859d-f6bbb57e9c96

Three way handshake is now functional. Need to add error conditions and graceful cleanup.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18682 a95241bf-73f2-0310-859d-f6bbb57e9c96

TCP module now refuses connections to closed ports.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18616 a95241bf-73f2-0310-859d-f6bbb57e9c96

TCP Socket creation and destruction implemented, as well as the beginning of the TCP state-machine

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18558 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fixed crashing bug on startup.
Andrew, TCP is actually used in the build, so please test if it crashes before
committing.
* Fixed some minor style issues.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18486 a95241bf-73f2-0310-859d-f6bbb57e9c96

Beginning of TCP implementation

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18478 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Completed the previous commit and merger of the team/network/new_stack branch.
* Removed ppp_up and pppcontrol from the image for now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18457 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Applied kaliber's patch part of ticket #6789, thanks! This makes the code not
only more readable, but also working correctly.
* Solved the problem stippi outlined differently, by checking whether length is
greater size for unsupported options.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39311 a95241bf-73f2-0310-859d-f6bbb57e9c96

I don't understand much about the code in question, but the ticket #6789
hints at a possible problem: Within the process_options() function, the
code does not make sure that size is a multiple of the option length
(unless I missed something) and thus the loop could wrap the unsigned
size variable, and not exit as intended. Make size an ssize_t and cast
where appropriate, after making sure it's initially a positive value.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@39309 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Finished groundwork on ICMP by introducing a completely protocol agnostic
error mechanism.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37896 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Reworked the complete stack to allow more than one address per network
interface - this caused quite a number of changes.
* Network interfaces, and its addresses are now reference counted (not yet
complete, though, InterfaceAddresses need to hold references to their
interface as well).
* There are two known regressions of this commit that I will fix later:
- you cannot remove interfaces anymore
- IPv4 multicast was broken anyway, but now it's disabled, too.
* Moved a device_interfaces.cpp|h out of interfaces.cpp.
* The datalink layer chain is now instantiated per domain per interface,
not just per interface anymore.
* When a buffer reaches the network layer, it has no known interface yet, ie.
the ipv4|6|whatever modules need to set this manually.
* Added more debug output, and some new debugger commands, the control option
is now printed in clear text.
* Added hash_address() function to the address modules. Added "const" to
set_to_defaults() where needed.
* Fixed net_buffer's restore header functions offset use as reported by Atis.
* Improved buffer dump output, use the domain module to print the address if
available.
* Moved net_buffer::type into the union, as it's not needed by the upper layers
anymore.
* Moved IPv6 specific code from {add|remove}_default_route() to where it
belongs, but disabled it for the time being.
* Completely discarded useless ipv4_datagram module.
* Added ping6 to the build.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37794 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Applied next work in progress patch by Atis that takes into account most of
my comments so far. Thanks!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@37793 a95241bf-73f2-0310-859d-f6bbb57e9c96

Applied patch by Ma Jie adding functionality needed by mDNSResponder:
* added new protocol method process_ancillary_data_no_container() that does not
need a container to fill the cmsghdr data.
* Added support for the IP_RECVDSTADDR option using this call.
* Implemented support for IP_MULTICAST_IF.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31585 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Added missing hooks with a description of what's missing for clarity.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@31077 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Sockets now inherit from WeakReferenceable.
* This fixes the problem when a socket changes something with regards to its
parent.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@30000 a95241bf-73f2-0310-859d-f6bbb57e9c96

* No longer leaks the EndpointManagers at unload.
* Now uses an array instead of a doubly linked list to find the endpoint
manager for a domain.
* No longer locks the endpoint managers during TCP processing, which actually
made all TCP input serialized.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@29210 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Replaced the useless InitCheck() method in {Open,Multi}HashTable (it
always returned B_OK) by a Init() method, which sets the initial size
and returns an error, if that fails.
* Adjusted code using the classes accordingly. Replaced a few
InitCheck() methods in the network code by Init().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@26127 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Removed old mutex implementation and renamed cutex to mutex.
* Trivial adjustments of code using mutexes. Mostly removing the
mutex_init() return value check.
* Added mutex_lock_threads_locked(), which is called with the threads
spinlock being held. The spinlock is released while waiting, of
course. This function is useful in cases where the existence of the
mutex object is ensured by holding the threads spinlock.
* Changed the two instances in the VFS code where an IO context of
another team needs to be locked to use mutex_lock_threads_locked().
Before it required a semaphore-based mutex implementation.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25283 a95241bf-73f2-0310-859d-f6bbb57e9c96

* tcp_header::urgent_offset must be set in network byte order as well.
* Cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25243 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Added TCPEndpoint::GetOption(), currently only supports TCP_NODELAY, and
TCP_MAXSEG.
* Note, TCP_MAXSEG cannot be set yet.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25241 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Merged _Receive() and _SegmentReceived().
* Cleanup, shuffled methods around, renamed methods, etc. - no functional changes.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@25223 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Added flags field in net_protocol_module_info; there is currently a single
defined flag: NET_PROTOCOL_ATOMIC_MESSAGES.
* socket_send() now honours NET_PROTOCOL_ATOMIC_MESSAGES and returns either
EMSGSIZE if the data to be send is larger than net_socket::send::buffer_size,
or divides the data in appropriately sized chunks.
* This fixes sending >=64K over a TCP socket at once (TCP would just have
returned an error in that case).
* TCP now overrides the default send buffer size (to 32768 for now).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@23915 a95241bf-73f2-0310-859d-f6bbb57e9c96

* If a new buffer had its last part in common with an existing larger buffer,
BufferQueue::Add() tried to remove a negative amount of bytes. This could
bring a download to a complete halt (as could the other one due to the list
link mixup).
* While the RTT computation still seems to work not that good (with a drop quote
of 50% I would easily reach retransmit timeouts of 80 secs), TCP should now
work a lot better on a flaky connection.
* Renamed _GetMSS() to _MaxSegmentSize().
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22677 a95241bf-73f2-0310-859d-f6bbb57e9c96

* int32_t, uint32_t are now of type "int", and no longer of type "long".
This should help to reduce the number of warnings imported code will throw
during compilation (helps a lot with tcpdump, for example).
* Since long is 64 bit on 64 bit platforms, we might want to think about doing
that change for the Haiku types int32 and uint32 as well.
* Fixed several occurences of hidden type problems.
* Fixed build of the stack and TCP under BeOS.
* Fixed incorrect typedef in socket_interface.h.
* Minor cleanup.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@22643 a95241bf-73f2-0310-859d-f6bbb57e9c96

tcp: no longer need recursive locking.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21216 a95241bf-73f2-0310-859d-f6bbb57e9c96

net_buffer: preparing for better metadata management


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21210 a95241bf-73f2-0310-859d-f6bbb57e9c96

TCP: getsockopt was missing. fixes #1225


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21176 a95241bf-73f2-0310-859d-f6bbb57e9c96

tcp: allow TCP_NODELAY to be set


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21069 a95241bf-73f2-0310-859d-f6bbb57e9c96

use a appropriate naming for structure fields.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21016 a95241bf-73f2-0310-859d-f6bbb57e9c96

renamed TCP's TSval/TSecr


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@21014 a95241bf-73f2-0310-859d-f6bbb57e9c96

added 'tcp_endpoints' and 'tcp_endpoint' debugger commands.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20909 a95241bf-73f2-0310-859d-f6bbb57e9c96

fixed a nice C-induced issue which was making us rewrite stuff.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20823 a95241bf-73f2-0310-859d-f6bbb57e9c96

added Recv-Q/Send-Q output to netstat.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20819 a95241bf-73f2-0310-859d-f6bbb57e9c96

partially rewrote TCP's endpoint manager. Fixes #1173


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20814 a95241bf-73f2-0310-859d-f6bbb57e9c96

TCP: added SACK definitions and option processing.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20775 a95241bf-73f2-0310-859d-f6bbb57e9c96

check option length when processing TCP options.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20774 a95241bf-73f2-0310-859d-f6bbb57e9c96

some internal reorganization of getsockopt()/setsockopt() handling. TCP is now able to fully use the application requested sender/receiver buffer sizes for improved performance.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20764 a95241bf-73f2-0310-859d-f6bbb57e9c96

some TCP performance improvements.

- support TCP fast retransmit/fast recovery.
- maintain the RTT average time and update the retransmit timeout accordingly.
- improvements to TCP Slow start / congestion avoidance.
- better handling of the retransmission timer.
- properly size segments taking the TCP options length into consideration.
- as an interim fix, update the SendQ/RecvQ sizes on Connect().


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20748 a95241bf-73f2-0310-859d-f6bbb57e9c96

assorted TCP fixes.

- fixed the locking for spawned connections and accept()s.
- return EMSGSIZE if the user is trying to write more data than the send buffer can hold.
- fixed a crash when receiving a RST while the connection is being closed.
- don't wake up readers when the connection gets established.
- endpoint managers lock must be recursive to properly work with spawn'ed sockets.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20727 a95241bf-73f2-0310-859d-f6bbb57e9c96

support RFC 1323's TCP Timestamps (we are still not updating our estimator though).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20719 a95241bf-73f2-0310-859d-f6bbb57e9c96

made TCP handle multiple domains.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20718 a95241bf-73f2-0310-859d-f6bbb57e9c96

introduced Checksum::PseudoHeader helper.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20717 a95241bf-73f2-0310-859d-f6bbb57e9c96

glued the multicast filter handling to the receive path: we are now capable of receiving multicast frames in datagram sockets.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20695 a95241bf-73f2-0310-859d-f6bbb57e9c96

use module_dependencies to load the required modules by udp, tcp, ipv4, icmp and arp.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20676 a95241bf-73f2-0310-859d-f6bbb57e9c96

added buffer, datalink and socket module references to the stack module so we don't have to load them in each other module.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20673 a95241bf-73f2-0310-859d-f6bbb57e9c96

moved address selection logic to a new 'get_buffer_route'.

- IPv4 now assumes the addresses it is supplied in send_routed_data are already the appropriate ones.
- made the Data(), operator* and operator-> methods in NetBufferFieldReader const so we can use them in the same expression as the constructor.
- fixed an issue with UDP where the wrong source address could be used in the calculating the checksum.
- changed ipv4_print_address to use the more common 0.0.0.0 format.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20660 a95241bf-73f2-0310-859d-f6bbb57e9c96

some NetBufferUtility revamp.

- introduced base NetBufferFieldReader which deals with obtaining a continuguous field to deal with.
- renamed Detach() to Sync() to better express the fact that we may be writing to the buffer.
- Fixed IPv4's and ICMP's checksum calculation as it assumed the underlying header was contiguous.
- ICMP is now able to reply to ICMP Echo Requests which were split across data nodes.
- in split_buffer(), make sure we were able to trim() the new buffer before damaging the original one.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20657 a95241bf-73f2-0310-859d-f6bbb57e9c96

fixed add_tcp_header() as it wasn't considering the possibility that prepending data would not result in a contiguous buffer. This would result in wrong checksums for apparent no reason.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20643 a95241bf-73f2-0310-859d-f6bbb57e9c96

fixed multiple TCP issues.

- Moved FIN handling to after Segment Text handling, it matches the RFC and fixes a possible issue with a user missing some final segment data when receiving a FIN.
- Fixed the FIN handling to better terminate connections (no more senseless chatter in the end with RSTs etc).
- When Bind()ing, set the socket address so a call to getsockname() gets the allocated port correctly.
- After reaching the ESTABLISHED state, try to wake all pending threads (still needs work).
- Corrected the maximum amount of time we wait in SendData() to respect socket->send.timeout.
- Now ReadData() behaves correctly in all possible states.
- There was a missing handling of MSG_DONTWAIT, fixed.
- Better internal handling of PSH.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20624 a95241bf-73f2-0310-859d-f6bbb57e9c96

fixed another TCP issue: if we were in TIME_WAIT and we received a retransmission or delayed ack, TCP would wrongly bindly immediatly acknowledge.

* Moved TIME_WAIT and CLOSED handling to common Receive() path that does Sequence checking and further tests.
* Moved setting FLAG_NO_RECEIVE to the end of Receive() when FIN is set so we can check for NO_RECEIVE before processing the segment text just after processing FIN.
* Added a new action DELETE to be used when in TIME_WAIT and we receive a good RST


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@20572 a95241bf-73f2-0310-859d-f6bbb57e9c96

Calmed down the networking stack a lot - since it basically works, there is no
reason to slow it down with debug output that much; this will also help investigating
some issues where you just aren't interested in most of the output.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19672 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added some more (optional) debug output.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19665 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Implemented a basic infrastructure for a netstat command.
* Started a netstat command.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19560 a95241bf-73f2-0310-859d-f6bbb57e9c96

Now use a random (based on system_time()) initial sequence number - this also
revealed a bug in the recognition of faulty SYNs.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19419 a95241bf-73f2-0310-859d-f6bbb57e9c96

Renamed class TCPConnection to TCPEndpoint.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19418 a95241bf-73f2-0310-859d-f6bbb57e9c96

Rewrote how bind() works:
* there are now two hash tables: one for connections, and one for ports
* the first one is used to find the endpoint for incoming connections
* the latter is used to check if the address to bind() to is still available
(incl. support for SO_REUSEADDR, and SO_REUSEPORT). Specialising an existing
socket is not allowed, though; wildcard sockets need to be started last.
* the TCPConnection class now has a pointer to the next endpoint with the
same port number - this list is scanned for the existing bound sockets
on that port.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19416 a95241bf-73f2-0310-859d-f6bbb57e9c96

* If you send more than the maximum buffer size at once, TCP will now block
until it could send all the data.
* The window shift option can now also be send if the actual option is zero to
indicate we support this option.
* If the window shift is not specified, we'll fall back to 0 for our receive
window as well now.
* _SendQueued() now resets the segment options after SYN.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19407 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Reintroduced the accept semaphore: it will be inherited by the new connections
of a LISTEN socket.
* Reading data should now more or less work, too.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19401 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Renamed _SendQueuedData() to _SendQueued(), and made it independent from the
"flags" parameter - this can't be used with retransmitting anyway, and since
the flags are actually fixed per state, the previous solution didn't really
make much sense.
* Made _SendQueued() work a lot more like BSD's tcp_output().
* We can now send even large buffers that need more than one segment at once.
* Added a simple recursive locking mechanism for now - this should be done
differently, though, as we want to have good performance in full duplex mode.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19384 a95241bf-73f2-0310-859d-f6bbb57e9c96

Some more work-in-progress:
* the TCPConnection::Receive() method is now more or less working as it should;
of course, there are a number of missing things (like round-trip time estimation,
retransmit timers, receive window update, ...).
* reply_with_reset() was broken, and accidently always send the segment it should
answer with reset... (causing an endless loop during connect)
* BufferQueue::RemoveUntil() must always set the fFirstSequence member to the new
sequence, or you will never be able to send anything with that queue (as the
data in it would be no longer contiguous).
* connects, sendings (only single segments), and receiving data is working now
basically (but very incomplete); retransmits or even subsequent transmits (if
the data to be sent doesn't fit in one segment) doesn't work yet, so you better
don't lose any segments :-)


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19378 a95241bf-73f2-0310-859d-f6bbb57e9c96

Work-in-progress on TCP:
* Changed the implementation to be more BSD like; state variables are now
the same set as usual.
* The BufferQueue didn't use the initial sequence correctly (problems with
SYN sequence).
* It now also removes data out of the current data set (ie. data that was
already read by the application).
* BufferQueue::Get() also didn't work correctly (the version used by sending
data).
* Fixed various issues around the code like incorrect handling of unexpected
data.
* TCP options don't need the end-of-options marker in case they fill up the
data already, also, the end-of-options marker doesn't need to be padded.
* Options are now only processed during SYN - other options may come
later (timestamps are candidate number one).
* Also broke what was working before: connections do no longer work!


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19376 a95241bf-73f2-0310-859d-f6bbb57e9c96

Added more than one option was broken.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19371 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Implemented adding/processing TCP options; so far only "max segment size" (MSS)
is really supported.
* Added TCP option fields to the tcp_segment_header structure - they are filled
in on receive, and add_tcp_header() now gets a tcp_segment_header as well, and
will add any options automatically.
* Fixed some minor bugs (connection with passive open had wrong state after connect).


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19333 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Big rework of TCP - doesn't have any additional features yet, though, even
though it can now connect to itself (and should, in theory, also be able
to connect to other TCP implemenations).
* Separated the big state machine from ReceiveData() into several smaller sized
methods.
* Moved reset and acknowledgement handling for all kind of receives to a common
place in tcp_receive_data().
* Removed locking for now - the previous locking approach was wrong due to a
number of reasons: the previous version deadlocked when it had to connect
locally, and it also didn't take into account that TCP is a full-duplex
protocol; it's not wise to only be able to manage one direction at a time
if that's not really needed.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19329 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Some cleanup, renamed some flags/constants to be a bit clearer (even though the states
now deviate from what other use to have, ie. FreeBSD).
* Replaced macros with inline methods.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19215 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Moved the TCPConnection class into its own file.
* Added some missing result checks, mostly for allocations.
* Fixed a wrong precendence with the ?: operator
* Some minor cleanup.
* Renamed sBufferModule to gBufferModule - the header expects it to be a global,
so it should be named like one.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19178 a95241bf-73f2-0310-859d-f6bbb57e9c96

Sending data over TCP should work now. Receiving is still MIA.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@19007 a95241bf-73f2-0310-859d-f6bbb57e9c96

The full TCP state machine should be working now, with the exception of the LISTEN state. It cannot yet transfer data though - that will be implemented next. Connections are only made from port 40000 though, ephemeral ports are not yet implemented.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18729 a95241bf-73f2-0310-859d-f6bbb57e9c96

Three way handshake is now functional. Need to add error conditions and graceful cleanup.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18682 a95241bf-73f2-0310-859d-f6bbb57e9c96

TCP module now refuses connections to closed ports.

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18616 a95241bf-73f2-0310-859d-f6bbb57e9c96

TCP Socket creation and destruction implemented, as well as the beginning of the TCP state-machine

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18558 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Fixed crashing bug on startup.
Andrew, TCP is actually used in the build, so please test if it crashes before
committing.
* Fixed some minor style issues.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18486 a95241bf-73f2-0310-859d-f6bbb57e9c96

Beginning of TCP implementation

git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18478 a95241bf-73f2-0310-859d-f6bbb57e9c96

* Completed the previous commit and merger of the team/network/new_stack branch.
* Removed ppp_up and pppcontrol from the image for now.


git-svn-id: file:///srv/svn/repos/haiku/haiku/trunk@18457 a95241bf-73f2-0310-859d-f6bbb57e9c96