94796a566b
Document the loopback.
2017-07-14 03:30:00 +00:00
75ddbe9776
Add a bare-metal usage example.
2017-07-14 03:18:11 +00:00
312ff93c86
Remove default impl for Device::limits().
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We should not assume any default MTU.
2017-07-14 03:18:11 +00:00
f3e54966fd
LoopbackInterface → Loopback.
2017-07-14 01:17:06 +00:00
63ab7d4e7a
Implement loopback interfaces.
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This also adds a default implementation of Device::limits.
2017-07-14 01:14:40 +00:00
5556f09351
Annotate all simple getters with #[inline].
2017-07-04 18:46:36 +00:00
3f9805b2c1
Remove *Socket::{process,dispatch} from public interface.
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These no longer have to be public, since our required Rust version
has pub(crate).
2017-06-30 20:55:46 +00:00
938fb99070
In {Tcp,Udp}Socket::process, make protocol check an assertion.
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We filter sockets by type upstream of the process() calls.
2017-06-30 19:17:14 +00:00
6cc2d494ca
Travis: require build on stable Rust to succeed.
2017-06-29 16:09:01 +00:00
2c1e234b91
Remove Socket::{process,dispatch} from public interface.
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These no longer have to be public, since our required Rust version
has pub(crate). In addition Socket::process is not used at all.
2017-06-29 15:56:03 +00:00
6ad8fea31f
Fix a typo in 5c3fc493.
2017-06-27 21:51:56 +00:00
04bd8a0051
Discard packets with non-unicast source addresses at IP level.
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This is required by RFC 1122 and helps avoid "broadcast storms".
2017-06-26 17:01:23 +00:00
6cd8cb4422
Transmit actual UDP checksum of all-zeroes as all-ones instead.
2017-06-26 16:57:21 +00:00
cbf6e5cdbc
Try to trigger fast retransmit when we detect a missing TCP segment.
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The changes in this commit affect the following scenario:
* Remote end sends octets 1..2, they are delivered and buffered
on local end;
* Remote end sends octets 3..4, they are lost;
* Remote end sends octets 5..6, they are delivered but cannot
be buffered on local end because we don't perform reassembly.
Before this commit, we would silently drop the segment with octets
5..6, relying on retransmission timer on the remote end. This works,
but can result in severe decrease in throughput. After this commit,
we send a duplicate ACK, which may trigger fast retransmit, if
implemented by the congestion control algorithm on the remote end.
2017-06-26 08:44:07 +00:00
62c9b7d6fa
In examples, trace the packets being dropped by the fault injector.
2017-06-26 08:44:07 +00:00
02abd7a983
In examples, print packet dumps with timestamps, too.
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This helps debugging retransmit issues.
2017-06-26 08:01:00 +00:00
2704a10dd8
Add missing #[derive]s on wire::IpVersion.
2017-06-26 06:06:18 +00:00
4f2804e104
Don't reply to a TCP RST packet with another TCP RST packet.
2017-06-26 05:48:30 +00:00
1e8cd1a65f
Refactor EthernetInterface::poll.
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Also, after this commit, we stop iterating over TCP/UDP sockets after
finding one that accepts the packet.
2017-06-26 05:48:27 +00:00
0f0c545755
Make sure representation emission covers every octet of the buffer.
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Also fix a bug where TcpRepr::emit would not clear the urgent
pointer.
2017-06-26 03:44:36 +00:00
050dd788c1
Set TCP PSH flag when sending the last buffered data.
2017-06-25 23:12:30 +00:00
b86d22701d
Expose PSH flag in TcpRepr.
2017-06-25 08:20:25 +00:00
db75f70fa3
Fix a few typos in TCP socket code (NFC).
2017-06-25 08:05:37 +00:00
0a9c5d52dd
Remove an unnecessary length check.
2017-06-24 16:34:55 +00:00
74823b0dff
try! → ?
2017-06-24 16:34:32 +00:00
023d8deea5
Disable checksum validation on wire level when fuzzing.
2017-06-24 15:26:15 +00:00
fce23593fc
Fix insufficient length validation in TCP packets.
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Found via cargo-fuzz.
2017-06-24 12:29:39 +00:00
c73af2b247
Fix insufficient length validation in UDP packets.
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Found via cargo-fuzz.
2017-06-24 12:15:18 +00:00
6790eac6d9
Fix a crash parsing a malformed IPv4 packet.
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Found via cargo-fuzz.
2017-06-24 12:02:34 +00:00
9f8db1d8f9
Factor out wire::tcp::field::OPTIONS.
2017-06-24 12:02:34 +00:00
315b51d7da
Fix a crash parsing a truncated TCP packet with options.
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Found via cargo-fuzz.
2017-06-24 11:48:17 +00:00
6842d7013d
Fix a crash parsing malformed TCP options.
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Found via cargo-fuzz.
2017-06-24 11:48:17 +00:00
c09e96a657
Fix a crash printing a malformed TCP packet.
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Found via cargo-fuzz.
2017-06-24 11:48:13 +00:00
3eaa96957c
Add packet parser fuzzer.
2017-06-24 11:43:12 +00:00
8b27330c8b
Do not attempt to validate length of packets being emitted.
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This is a form of an uninitialized read bug; although safe it caused
panics. In short, transmit buffers received from the network stack
should be considered uninitialized (in practice they will often
contain previously transmitted packets or parts thereof). Wrapping
them with the only method we had (e.g. Ipv4Packet) treated the buffer
as if it contained a valid incoming packet, which can easily fail
with Error::Truncated.
This commit splits every `fn new(buffer: T) -> Result<Self, Error>`
method on a `Packet` into three smaller ones:
* `fn check_len(&self) -> Result<(), Error>`, purely a validator;
* `fn new(T) -> Self`, purely a wrapper;
* `fn new_checked(T) -> Result<Self, Error>`, a validating wrapper.
This makes it easy to process ingress packets (using `new_checked`),
egress packets (using `new`), and, if needed, maintain the invariants
at any point during packet construction (using `check_len`).
Fixes #17 .
2017-06-24 11:42:32 +00:00
cc5fb0e5ef
Clean up a few doctests.
2017-06-24 09:02:12 +00:00
be29789192
Fix an unimplemented!() invocation that should be unreachable!().
2017-06-22 00:38:45 +00:00
83cf86f1d0
Unbreak parsing of ICMP unreachable messages.
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Fixes #16 .
2017-06-21 04:08:33 +00:00
adc51fab7f
Actually export socket::SocketSetItem publicly.
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It was unintentionally left unnameable. Fixes #14 .
2017-06-21 03:57:13 +00:00
8d7fa94a6d
Add the `ping` example.
2017-06-21 03:51:02 +00:00
ca56baca65
Add `RawSocket`.
2017-06-21 03:29:31 +00:00
e927b09ba8
`IpRepr::lower` replaces unspecified src_addr in Ipv4Repr as well.
2017-06-21 03:01:15 +00:00
c1c4ed68c5
Factor out the `RingBuffer` container.
2017-06-21 02:50:10 +00:00
59fc0c0358
Factor out the "raw_socket" and "tap_interface" features
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This makes it possible to build smoltcp with the "std" feature on platforms
without libc, such as redox.
2017-06-15 10:12:11 +00:00
f29b610801
Remove accidentally committed change.
2017-05-29 17:15:35 +00:00
53be7a7747
Add a sinkhole to the server example.
2017-05-29 16:54:51 +00:00
5bac3e5a02
Fix no-std build.
2017-05-29 11:04:49 +00:00
91ef5c60c3
Add packet shaping to the fault injector.
2017-05-29 10:53:30 +00:00
73bb4b8593
Implement TCP TIME-WAIT timeouts.
2017-04-21 16:01:49 +00:00
8087bf3755
Fix a typo in documentation.
2017-04-21 15:59:55 +00:00
whitequark
Egor Karavaev