Commit Graph

619 Commits

Author SHA1 Message Date
Dan Robertson 4a98190f9b Replace EthernetInterface::new with EthernetInterfaceBuilder. 2017-12-18 13:29:29 +00:00
whitequark 278bb4b2c9 Trace the TCP socket acknowledging incoming segment. 2017-12-18 12:47:42 +00:00
whitequark 05677dbd76 Fix 14185a16. 2017-12-18 11:42:55 +00:00
whitequark 19f52bd46c Do not fill neighbor cache with IPs not on the same network as us.
This is pointless (`route` doesn't even check the cache in that case)
and wastes cache space.
2017-12-18 11:06:26 +00:00
whitequark 8dd9bdeaad Trace neighbor discovery status on a per-socket basis.
This avoids delaying the first packets for new neighbors by
(at least) the ARP cache silence time, or potentially even
indefinitely.
2017-12-18 11:06:24 +00:00
whitequark 16b59eefad Style. NFC. 2017-12-16 21:45:24 +00:00
whitequark 75e371d947 Rework the pretty printer to avoid superfluous trailing newlines. 2017-12-16 21:42:19 +00:00
whitequark ec74e34239 Fix clocking code in the loopback example. 2017-12-15 10:20:06 +00:00
whitequark c19bd1da7c Make elaborated reasons for sending a TCP packet more precise. 2017-12-15 06:31:50 +00:00
whitequark 1c7ce85004 Log an elaborated reason for sending a TCP packet.
Otherwise, it is hard to debug e.g. ACK loops.
2017-12-15 05:24:17 +00:00
Dan Robertson 888b098dca Process the Icmpv4Repr in IcmpSocket::process
- Use the Icmpv4Repr in IcmpSocket::process instead of the raw payload.
 - Update the IcmpSocket tests.
2017-12-09 00:10:09 +00:00
whitequark 26b8052ee9 Make packet dumps emitted for broken packets more useful.
Before this commit, only the outermost frame (the Ethernet one)
would be shown, which is really no help at all.
2017-12-08 07:11:08 +00:00
Dan Robertson be43f4067a Minor doc improvements to wire::ipv6
- Add links to the Addressing Achitecture RFC where appropriate
 - Add comments to functions where appropriate
2017-11-30 19:20:42 +00:00
Dan Robertson b97c592671 Add IPv6 address and cidr to wire
- Add the ipv6 feature
   - Ensure a travis build with the ipv6 feature enabled.
 - Add the necessary infrastructure to wire for ipv6 support.
   - Ipv6Address
   - Ipv6Cidr
 - Add Ipv6 Address and Cidr parsing to parsers
 - Add basic tests.
2017-11-29 12:57:22 +00:00
Jeremy Soller 8604eaa8f9 Allow receiving broadcast packets via UDP sockets. 2017-11-23 07:01:35 +00:00
Dan Robertson 308afc5a25 Remove debug println in test_evict
The println's surrounding the final cache fill in test_evict that causes
PADDR_B to be evicted are not needed.
2017-11-22 08:03:39 +00:00
whitequark ff530020dd Style. NFC. 2017-11-22 07:44:03 +00:00
whitequark 98a3ec8c3a Limit the rate at which sockets will request neighbor discovery.
The rate of emission of neighbor discovery packets is already
limited at the level of the entire neighbor cache, but poll()
would uselessly spin until the answer arrives (if ever).
2017-11-22 07:20:31 +00:00
whitequark 6c83936872 Extract socket handle into a new SocketMeta structure.
This paves way for adding more metadata apart from handles,
such as caches and so on.

This commit also removes SocketHandle::EMPTY in favor of
SocketHandle::default() since they are functionally identical.
2017-11-22 03:50:09 +00:00
whitequark 715aa4b217 Add a missing feature check. 2017-11-21 12:02:25 +00:00
whitequark 52a6e27206 Implement eviction in neighbor cache for fixed storage size. 2017-11-21 11:53:26 +00:00
whitequark 29a338228d Fix a broken macro invocation. 2017-11-21 11:06:53 +00:00
whitequark b70e9174c8 Don't build on stable for now. 2017-11-21 11:06:42 +00:00
whitequark eaa50d0003 Rewrite the ARP cache to allow for flood protection and expiration. 2017-11-21 10:53:55 +00:00
Kai Lüke 2a52234d53 Don't panic on TCP sequence number wrapping in debug mode. 2017-11-13 18:03:36 +00:00
Egor Karavaev 1e809daf7a Make `Error::Unaddressable` ignored for ICMP sockets as well. 2017-11-13 14:16:03 +00:00
Egor Karavaev eb7d0e346e ICMP sockets don't end ICMP packets processing. 2017-11-13 14:16:03 +00:00
Kai Lüke 3db035bbac Preserve retransmission timer for Dup-ACKs
Duplicate ACKs should not replace the retransmission timer,
but if not in retransmission, still set the keep-alive timer
as normal ACKs do.
2017-11-13 06:26:26 +00:00
whitequark 959e4829a9 Fix ICMP socket documentation. NFC. 2017-11-13 04:54:49 +00:00
whitequark cee79f30f3 Update README. 2017-11-10 02:02:17 +00:00
whitequark 19373c58c8 Style. NFCI. 2017-11-09 02:07:24 +00:00
whitequark 65c8aea921 Remove impl Ord/PartialOrd for Cidr.
It's not obvious that CIDRs are ordered in any particular meaningful
way.
2017-11-09 01:50:34 +00:00
Dan Robertson adb5014780 Add ICMP sockets
- Add support for ICMP sockets
 - Add tests for ICMP sockets
 - Rename proto-<type> features to socket-<type>
 - Update documentation
2017-11-09 00:08:24 +00:00
Philipp Oppermann c3e07dad9a Store plain DeviceT instead of Managed<_> in EthernetInterface 2017-11-08 09:34:35 +00:00
whitequark d9fa7f6bc6 Rename proto-* features back to socket-*.
A proto-* feature does not make sense for ICMP, where the protocol
is always enabled, but sockets, not.
2017-11-06 09:51:03 +00:00
whitequark c2994b9757 Reimplement {RawSocket,TapInterface}::receive correctly. 2017-11-06 09:38:44 +00:00
whitequark 7039ec8b04 Rename a few tests. NFC. 2017-11-04 02:42:51 +00:00
whitequark 9e783cb570 Add CODE_STYLE.md. 2017-11-03 23:34:12 +00:00
Philipp Oppermann 6a8e21cec0 Redesign the phy::Device trait to avoid Drop impls. 2017-11-03 23:15:07 +00:00
Dan Robertson b64257812b Do not send ICMPv4 responses to broadcasts
- Do not send ICMPv4 responses for packets with a broadcast destination
   address.
   - Do not send DstUnreachable with ProtoUnreachable on receipt of a
     packet with an unknown protocol with a non-unicast destination
     address.
   - Do not send DstUnreachable with PortUnreachable on receipt of a
     UDP packet when no sockets are listening on the destination port
     and the destination address is a non-unicast address.
 - Send the correct amount of the original datagram when sending Destination
   Unreachable error responses.
   - Do not assume that a ip datagram has a payload when sending a proto
     unreachable ICMPv4 error response.
 - Add tests to iface tests.
   - Ensure ICMP error responses are correctly formed when the
     datagram has no payload.
   - Ensure ICMP error responses are correctly handled for UDP packets
     when no socket is listening on the destination port.
   - Ensure the correct amount of the original payload is returned in
     Destination Unreachable responses.
2017-11-01 06:34:10 +00:00
whitequark fe6b04a29a Rework TcpSocket::{send,recv} to remove need for precomputing size.
Now, these functions give you the largest contiguous slice they can
grab, and you return however much you took from it.
2017-10-31 19:24:54 +00:00
whitequark 0b22943ddd Fix Cidr::contains_addr for zero length prefixes. 2017-10-30 08:25:32 +00:00
whitequark 33fa859665 Do not parse an empty string as an IpAddress.
This is more likely to result in downstream confusion than not.
Let downstream code decide exactly what it wants to do with
an empty string; be conservative here.
2017-10-30 07:20:55 +00:00
Dan Robertson 1cafcfc19f Tests: Add basic interface tests
- Add tests for the following
   - ICMP error responses are not sent in response to broadcast requests
   - ARP requests are responded to and inserted into the cache
   - ARP requests for someone else are not responded to, but the sender
     is still inserted in the cache
2017-10-28 19:33:01 +00:00
whitequark d37f4ef254 Use a much more sensible method naming for SocketRef. 2017-10-25 02:16:23 +00:00
whitequark 103fff9233 Expose wrapping and unwrapping of SocketRefs. 2017-10-25 01:28:59 +00:00
whitequark 5c2deb5dd2 Update README. 2017-10-25 00:30:57 +00:00
whitequark a9a00baa49 Rename Cargo features: socket-* → proto-*. 2017-10-25 00:20:40 +00:00
whitequark e495544a85 Fix a naming mishap. NFCI. 2017-10-24 23:55:58 +00:00
whitequark a7e6a1b5ae Simplify. NFC. 2017-10-24 23:12:55 +00:00