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101 Commits

Author SHA1 Message Date
Gregory Nutt
0b441ff1f4 net/: Add basic IEEE 802.15-4 socket support 2016-02-25 14:01:22 -06:00
Andrew Webster
49e5cc5a6f TCP: check for an active connection before cleaning it up 
If there is no active connection (e.g. it is waiting in accept), then
the connection object, which doesn't yet exist, should not be cleaned
up when the socket is closed.
 2016-01-22 16:22:09 -06:00
Andrew Webster
5e3023bef1 TCP: return from write when there is no buffer space 
During a write, if there is no more buffer space for the user data,
return the amount that was written instead of waiting until there
is free space.  If nothing has been written yet, then block as before.

This solves a deadlock that occurs if the user data is too large to
fit in the available buffer:  the write thread will block before any
data is added to the write queue, leaving no possibility that more
buffers will free up when they are ACKed (since they have not yet been
sent).  The write thread will then block forever and hold all of the
buffers.
 2016-01-22 16:19:20 -06:00
Andrew Webster
cdd187a7f3 TCP: check for sndcb before using it 2016-01-22 15:54:45 -06:00
Andrew Webster
df211ee46a TCP: add writable check during poll 
When a poll requesting POLLOUT happens, the poll should return
immediately if a write will not block.  This change adds that, as
opposed to the old behaviour of blocking until a timer from the
Ethernet driver eventually triggers the poll to complete.

This is only implemented for buffered TCP.  Unbuffered TCP should
behave as before.
 2016-01-22 15:52:14 -06:00
Andrew Webster
99f5fcda70 iTCP: use lowlevel syslog to avoid infinte recursion 
If stdout is a socket (e.g. telnet), then the debug message will cause
more TCP data to be sent, which generates another message, and so on
 2016-01-22 15:41:48 -06:00
Gregory Nutt
6209c51206 net/: More clean-up of spacing/alignment issues 2015-10-08 15:10:04 -06:00
Gregory Nutt
0b12dbf95d Fix some spacing problems 2015-10-04 15:04:00 -06:00
Gregory Nutt
b1e09d4847 net/socket and net/tcp: Fix a problem in whent there are multiple network devices. Polls were being sent to all TCP sockets before. This is not good because it means that packets may sometimes be sent out on the wrong device. That is inefficient because it will cause retransmissions and bad performance. But, worse, when one of the devices is not Ethernet, it will have a different MSS and, as a result, incorrect data transfers can cause crashes. The fix is to lock into a single device once the MSS is locked locked down. 2015-08-27 09:06:46 -06:00
Gregory Nutt
3bcdb218ff Networking: Get rid of the tcp_mss macro. It is confusing and only obfuscates what is really going on 2015-08-27 08:39:17 -06:00
Gregory Nutt
6687e156e6 Revamp last change. IFF_UP only required when allocating callback, not freeing. 2015-05-30 21:13:58 -06:00
Gregory Nutt
04a661a97c TCP networking: Add support for network driver events 2015-05-30 09:12:27 -06:00
Gregory Nutt
b756df982d net/: Lots of build problems introduced into multiple NIC support. Many places where conditional logic based on CONFIG_NETDEV_MULTINIC is confused with CONFIG_NET_MULTILINK. Lots of code changed with IPv6 that was never compiled with MULTINIC enabled. Still some problem with parameter passing. 2015-02-09 18:15:34 -06:00
Gregory Nutt
a07a764d42 ICMPv6: Adds basic logic to support verification that we have the IPv6 address in the Neighbor Table. This feature is important because otherwise the first packet sent to a remote peer will fail (it will be replaced with a Neighbor Solicitation). 2015-02-02 13:44:31 -06:00
Gregory Nutt
ccc72edc0b Networking: Add UDP read-ahead support and support for poll/select on UDP sockets. From Macs N. 2015-01-30 06:08:26 -06:00
Gregory Nutt
371a9fd84c Networking: Fix another deadlock condition. tcp_write_buffer_alloc() calls sem_wait() with network locked. That worked if CONFIG_NET_NOINTS was not defined because interrupts are automatically restored when the wait happens. But with CONFIG_NET_NOINTS=y, the wait blocks with the network locked -- bad style and also can lead to a deadlock condition 2015-01-28 11:56:11 -06:00
Gregory Nutt
c77426e550 Cosmetic changes to comments; refresh configuration 2015-01-22 14:46:36 -06:00
Gregory Nutt
46fc574f0f Forgot to remove some debug instrumentation in the last commit 2015-01-22 10:35:11 -06:00
Gregory Nutt
7106469191 Armv7-M: Remove Px4-only setting of stack to 0xff. This is incompatible with standard NuttX stack montitoring logic 2015-01-22 10:09:10 -06:00
Gregory Nutt
eb3c6e8390 Networking: Some fixes for compilation when both IPv4 and IPv6 are enabled 2015-01-18 09:23:22 -06:00
Gregory Nutt
f7663ef0ab Networking: Final detangle off IPv4 and IPv6 TCP/UDP send logic. The Networking subsystem now compiles with IPv6 enabled 2015-01-18 08:56:05 -06:00
Gregory Nutt
820509eadc Networking: Fix accept() so that it returns the correct IP address for the selected socket IP domain. 2015-01-17 09:27:05 -06:00
Gregory Nutt
4ad5998db3 net/socket and net/tcp: When we are ready to receive data or when we have outgoing data ready to be sent, we need to the notify the appropriate device driver of this condition. The notifying socket will be configured as either PF_INET or PF_INET6 and must look up the correct driver using the correct IP domain. 2015-01-17 08:33:14 -06:00
Gregory Nutt
2c251d845c include/net/if.h: Add a bit to the device flags to indicate if the device packet buffer holds an IPv4 or an IPv6 domain packet. Set/clear the flag along with the correct offset to the application payload data as each packet is received. 
net/socket, net/tcp, net/udp:  Add logic to select the domain of the outputgoing packet before sending any UDP or TCP packet.  This sets the bit to indicate the IPv4 or IPv6 domain and the correct offset to the output going payload data.
 2015-01-17 07:42:09 -06:00
Gregory Nutt
5e938941a6 Networking: Replace all references to net_ipaddr_t with either in_addr_t on net_ipv6addr_t. The goal is to support both IPv4 and IPv6 simultaneously. This requires that the two types be distinct and not conditionally typedef'ed to net_ipaddr_t. 2015-01-16 12:30:18 -06:00
Gregory Nutt
bee89be4f4 Networking: Drivers can have both IPv4 and IPv6 addesses, but a socket can only only one or the other; The socket connnection structures need to include a union of IPv4 and IPv6 addresses for the local address binding and for the remote address connections 2015-01-16 10:01:54 -06:00
Gregory Nutt
60e50ff3b5 Networking: More IPv6 detanglement 2015-01-15 13:08:28 -06:00
Gregory Nutt
b36dbe1d89 Add logic to netdev_findbyaddr() to return the correct network device for the case where a broadcast address is used. This change caused trivial ripples through other files because additional parameters are required for netdev_findbyaddr() when CONFIG_NET_MULTINIC 2014-11-23 11:00:22 -06:00
Gregory Nutt
2e55db369d Network: All logic will now handle varialbe length link layer protocol headers within incoming packets. This permits use of multiple network interfaces with differing data links. For example, ETHERNET + SLIP 2014-11-15 13:13:23 -06:00
Gregory Nutt
6e04518e4a If CONFIG_NET_ARP_SEND is enabled, then all ICMP, TCP, and UDP send operations will call arp_send() before attempting the real send operation. arp_send() will check if the the IP address mapping is in the ARP table and, if not send ARP requests periodically until it is. This eliminates losing the first outgoing message because there is not mapping in the ARP table. 2014-08-18 16:22:14 -06:00
Gregory Nutt
73f3ecf7e2 NET: Rename network interrupt event flags more appropriately: TCP_, UDP_, ICMP_, or PKT_ vs UIP_ 2014-07-06 17:22:02 -06:00
Gregory Nutt
a251259f90 NET: Rename some non-configurable constants UIP_ to IP_ or TCP_ 2014-07-06 16:19:26 -06:00
Gregory Nutt
b77fda2c95 NET: Rename TCP state values: UIP_ -> TCP_ 2014-07-06 16:10:26 -06:00
Gregory Nutt
9e87ab90b8 NET: Move private definitions from include/nuttx/net/arp.h to net/arp/arp.h 2014-07-06 11:05:28 -06:00
Gregory Nutt
c5fc24e110 NET: Standardize naming of all protocal header lengths 2014-07-05 13:04:48 -06:00
Gregory Nutt
a6b39d1879 NET: in-progress change... don't use 2014-07-04 16:38:51 -06:00
Gregory Nutt
cce35ce975 NET: More renaming 2014-07-04 15:40:49 -06:00
Gregory Nutt
77330679d4 NET: Rename uip_mss to tcp_mss 2014-06-30 19:09:23 -06:00
Gregory Nutt
8e706eb4ff Rename many functions in net/devif from uip_* to devif_* 2014-06-28 18:36:09 -06:00
Gregory Nutt
5790c94ba3 Rename net/uip to net/devif. Rename uip/uip.h to devif/devif.h 2014-06-28 18:07:02 -06:00
Gregory Nutt
76fa58ee00 Move all socket-related files from net/ to net/socket. Move net/net.h to net/socket/socket.h 2014-06-28 17:25:18 -06:00
Gregory Nutt
fce2a79abd Rename uip_driver_s net_driver_s 2014-06-27 16:48:12 -06:00
Gregory Nutt
953764181e NET: Move net/netdev*.c to net/netdev/netdev*.c 2014-06-27 09:56:45 -06:00
Gregory Nutt
64ba574ecc Move files to net/utils; make appropriate name changes, most for uip_lock to net_lock 2014-06-26 14:23:21 -06:00
Gregory Nutt
e1091251e6 NET: Move statistcs from uip.h to new netstats.h to remove nasty circular inclusion problem. 2014-06-26 09:32:39 -06:00
Gregory Nutt
579ee6f573 Clean-up packet socket naming 2014-06-25 10:34:52 -06:00
Gregory Nutt
04985d6d1e Clean up all TCP-related naming 2014-06-24 18:12:49 -06:00
Gregory Nutt
fabcb6d37e TCP Read-Ahead: Convert to use I/O buffer chains 2014-06-24 15:38:00 -06:00
Gregory Nutt
5d1f8180d4 Move the remaining files from include/nuttx/net/uip to include/nuttx/net; Rename *_internal.h header files in net/ to just *.h 2014-06-24 10:14:15 -06:00
Gregory Nutt
37646044ac Move include/nuttx/net/uip/uip-arch.h to include/nuttx/net/netdev.h 2014-06-24 09:28:44 -06:00
Gregory Nutt
38c6e41e8e Separate net/net_send_buffered.c and net/net_send_unbuffered.c to net/tcp/tcp_send_buffered.c, net/tcp/tcp_send_unbuffered.c, and pkt/pkt_send.c 2014-06-24 08:03:44 -06:00