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206 Commits

Author SHA1 Message Date
Gregory Nutt
c98f00a93b Update comments; trivial addtion to a document. 2016-06-10 09:36:59 -06:00
Gregory Nutt
4f208600aa Replace confusing references to uIP with just 'the network' 2016-05-30 09:31:44 -06:00
Gregory Nutt
2dd9777c7e Fix a backward conditional test introduced with the last commit 2016-03-20 09:58:07 -06:00
Gregory Nutt
00b44959ea TCP poll: TCP poll events can really only being processed when the poll from the correct device is received. 2016-03-20 08:39:15 -06:00
Gregory Nutt
4639cdd894 TCP timeouts: Fix some logic when there are multiple network interfaces. In this case, TCP timeout events can really only being processed when the poll from the correct device is received. 2016-03-20 08:19:00 -06:00
Gregory Nutt
2c95fef501 Remove some empty code section comments 2016-02-26 07:35:55 -06:00
Gregory Nutt
8db55f6493 Back out most of previous commit 2016-02-26 06:45:37 -06:00
Gregory Nutt
0b441ff1f4 net/: Add basic IEEE 802.15-4 socket support 2016-02-25 14:01:22 -06:00
Gregory Nutt
0fb035f76b Standardize some naming in code section comments 2016-02-21 18:09:04 -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
f348e68069 Update to use 64-bit timer when available 2016-01-21 11:54:26 -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
cb9e27c3b0 Standardize naming used for public data and function groupings 2015-10-02 16:30:35 -06:00
Gregory Nutt
d700793077 Fix a compile error when IPv6 is enabled 2015-09-07 16:34:25 -06:00
Alan Carvalho de Assis
f10a103108 Fix tcp_send_unbuffered when NET_ETHERNET is not defined. 2015-09-07 13:31:35 -06:00
Gregory Nutt
9c66bde5b0 Fix typo in pre-processor command noted by Pierre-noel Bouteville. Also move # of pre-processior command to column 1 2015-09-05 09:10:48 -06:00
Gregory Nutt
14297afb83 Cosmetic fix to break up long line 2015-09-03 07:33:50 -06:00
Gregory Nutt
36f4d0e9fc Fix a error in some comments 2015-09-02 20:03:28 -06:00
Gregory Nutt
0e2986f131 net/tcp: The logic that binds a specific networkd device to a connection was faulty for the case of multiple network devices. On bind(), the local address should be used to associate a device with the connection (if the local address is not INADDR_ANY); On connect(), the remote address should be used (in case the local address is INADDR_ANY). On accept(), it does not matter but the remote address is the one guarenteed to be available. 2015-09-02 19:48:31 -06:00
Gregory Nutt
9fcad39a45 Trivial typo fix 2015-09-02 10:09:33 -06:00
Gregory Nutt
63071a563a Costmetic changes 2015-08-27 10:38:43 -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
007aabc46f Fix a badly formatted comment 2015-08-26 19:18:04 -06:00
Anton D. Kachalov
b125c36849 Field `d_sndlen' is unsigned. It is always >= 0. 
Signed-off-by: Anton D. Kachalov <mouse@yandex-team.ru>
 2015-08-26 00:16:52 +03:00
SaeHie Park
e983e547e1 Networking: Correct return value from psock_tcp_accept(). From SaeHie Park 2015-08-25 07:15:21 -06:00
Gregory Nutt
342f5fe33d Fix references to the no-longer-existent misc/ directory in comments, README files, and documentation 2015-06-28 08:08:57 -06:00
Gregory Nutt
8f7752d956 Networking: Modify how callback structures are stored to avoid another potential use of a stal pointer. 2015-06-03 08:11:57 -06:00
Gregory Nutt
33085cb309 Networking: The network device list was protected by a re-entrant semaphore. With the recent change to support network device callback, the network stack needs to access the network device list too. Some drivers, however, run the network stack from the interrupt level -- this is bad but a fact in the current state. Of course,those drivers are unable to take the semaphore and will assert. 
The solution here is to eliminate the device devices semaphore altogether.  This eliminates netdev_semtake() and netdev_semgive() and replaces them with net_lock() and net_unlock() which have larger scope as needed for this purpose.
 2015-05-31 08:34:03 -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
8b029fbbee TCP networking: Hook the network monitor into the device event notification logic 2015-05-30 11:29:47 -06:00
Gregory Nutt
933b95ac80 Forgot to add a file in the last commit 2015-05-30 09:17:46 -06:00
Gregory Nutt
04a661a97c TCP networking: Add support for network driver events 2015-05-30 09:12:27 -06:00
Gregory Nutt
ab50e9d04d Networking: Get rid of g_ipv4_allzeroaddr and g_ipv4_alloneaddr. It is more efficient and more intuitive to use INADDR_ANY and INADDR_BROADCAST 2015-05-29 15:16:11 -06:00
Gregory Nutt
e672bcebfd UDP Networking: Add support for device event notification for UDP transfers. 2015-05-29 10:21:06 -06:00
Gregory Nutt
b5c005d5a4 Merge remote-tracking branch 'origin/master' into multinic 
Conflicts:
	nuttx/ChangeLog
 2015-05-28 19:30:48 -06:00
Gregory Nutt
e81f279315 Networking: Modify event list handling: Now there are two event lists each device structure: (1) One is for ARP and ICMP data related evetns, the other is for device related events. Callback allocation/free routines no accept a device paramter as well as a list: If the device paramter is added, then the callback goes into both the connection-related liast AND the device event list. Thus each socket type can received both custom data-related events as well as common device related events. 2015-05-28 12:01:38 -06:00
Gregory Nutt
01d176af76 net_startmonitor.c always returned zero. In the case where a socket has already been closed, it correctly handled the disconnetion event but still returned OK. Returning OK causes the callers of net_startmonitor to assume that the connection was okay, undoing the good things that net_startmonitor did and causing the socket to be marked as connected. This behavior was noted by Pelle Windestam. 2015-05-28 08:23:51 -06:00
Gregory Nutt
d6c3ed1c6f Networking: Fixes an important TCP bug: 16-bit flags was being converted to 8-bits in a few locations, causing loss of status indications 2015-05-27 17:17:42 -06:00
Gregory Nutt
1f3ee83134 Increase the size of the number of bytes sent from uint16_t to uint32_t in order to avoid TCP errors with long sessions. For exmple: 
int hello_main(int argc, char *argv[])
{
   uint32_t i;
   for(i = 0; i < 65536; i++)
    {
      printf("Hello, World!!\n");
    }

  printf("press any key!!\n");
  if (getchar()=='t')
    return 0;
  else
    return 1;
}

When ran in a Telnet session, the "press any key" is not displayed because the tcp session closed unexpectedly with:

tcp_input: ERROR: conn->sndseq xx, conn->unacked xx"

This is fixed by increasing the width of conn->sent to 32-bits to prevent overflow.

From Rony XLN
 2015-05-11 07:14:25 -06:00
Gregory Nutt
a82b8fd71f Networking: Fix several build errors/warning with IPv4 + IPv6 + multiple networks are enabled. 2015-02-10 06:54:10 -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
6d7891c4de Fix compile issues with configs/sim/nettest 2015-02-01 12:00:30 -06:00
Gregory Nutt
52f9a2744c Should fix another warning reported by Travis 2015-01-30 08:57:35 -06:00
Gregory Nutt
a438784054 Forgot to add a file in the last commit 2015-01-30 07:28:30 -06:00
Gregory Nutt
5736cf10af Networking: Separate TCP poll logic out of net/sockets/net_poll.c and move it into the new net/tcp/tcp_netpoll.c. 2015-01-30 07:25:01 -06:00
Gregory Nutt
de91d34a19 Networking: Separate out UDP poll logic from socket/net_poll.c into a new udp/udp_netpoll.c; Create a skeleton local/local_netpoll.c for future poll support on Unix domain sockets. 2015-01-30 07:09:25 -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
9c2af5317f Merge remote-tracking branch 'origin/master' into afunix 2015-01-28 12:03:43 -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
5f9837dcc8 Merge remote-tracking branch 'origin/master' into afunix 
Conflicts:
	nuttx/ChangeLog
 2015-01-27 21:47:12 -06:00
Gregory Nutt
c4bd6f52b5 Networking: The are issues with the TCP write-ahead buffering if CONFIG_NET_NOINTS is enabled: There is a possibility of deadlocks in certain timing conditions. I have not seen this with the Tiva driver that I have been users but other people claim to see the issue on other platforms. Certainly it is a logic error: The network should never wait for TCP read-ahead buffering space to be available. It should drop the packets immediately. 
This was fixed by duplicating most of the IOB interfaces:  The versions that waited are still present (like iob_alloc()), but now there are non-waiting verisons of the same interfaces (like iob_tryalloc()).  The TCP read-ahead logic now uses only these non-waiting interfaces.
 2015-01-27 21:23:42 -06:00
Gregory Nutt
f756545eb0 Networking: Add local Unix domain socket accept logic 2015-01-25 16:27:25 -06:00
Gregory Nutt
90e59217c6 Networking: Move TCP specific logic out of net/socket/accept.c to net/tcp/tcp_accept.c; add hooks for local, Unix doamin sockets 2015-01-25 15:46:05 -06:00
Gregory Nutt
0def771c8d Networking: Move TCP specific logic out of net/socket/accept.c to net/tcp/tcp_accept.c; add hooks for local, Unix doamin sockets 2015-01-25 15:45:51 -06:00
Gregory Nutt
f4bb7f14e1 Networking: Clean up network status collection and presentation for IPv6 2015-01-24 08:26:12 -06:00
Gregory Nutt
c77426e550 Cosmetic changes to comments; refresh configuration 2015-01-22 14:46:36 -06:00
Gregory Nutt
eac4ea7ae5 Networking: Back out a previous change. It is incorrect 2015-01-22 12:10:16 -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
5e23a855ec More typos in debug statements 2015-01-21 10:32:59 -06:00
Gregory Nutt
354bc626ab Fix a typo introduced in the last commit 2015-01-21 10:31:18 -06:00
Gregory Nutt
3202819328 IPv6 -- various fixed from problems found in testing 2015-01-21 10:29:18 -06:00
Gregory Nutt
5d31687e75 Correct name of fields in struct sockaddr_in6: sin6_port and sin6_family, not sin_port and sin_family 2015-01-20 18:14:09 -06:00
Gregory Nutt
2842b5c5d6 Networking: Fix some problems with debug is enabled; fix a warning 2015-01-19 10:16:37 -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
ea52bda8f9 Networking: Add IPv6 suppport to TCP application level sending logic 2015-01-17 18:18:19 -06:00
Gregory Nutt
d8b046f2fb Networking: Fix a simple IPv6 compile error 2015-01-17 17:48:15 -06:00
Gregory Nutt
86f617cc88 Networking: Straighten up use if IPv6/IPv4 in TCP connection logic 2015-01-17 17:07:54 -06:00
Gregory Nutt
b187b4f381 Networking: Straighten up use if IPv6/IPv4 in TCP connection logic 2015-01-17 15:17:35 -06:00
Gregory Nutt
f7681dbb43 Networking: Detangling IPv6/4 logic in UDP connection structures 2015-01-17 14:13:56 -06:00
Gregory Nutt
94f9312150 Networking: Save the IP domain in the connection structure 2015-01-17 13:07:48 -06:00
Gregory Nutt
e2933ca4cc Networking: Oops. Forgot to add a couple of files that were part of an earlier commit 2015-01-17 09:35:27 -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
88a0e82934 Networking: Remove field d_sndata from the device structure. It is the same as d_appdata and unnecessary 2015-01-17 05:59:13 -06:00
Gregory Nutt
8f8259a0d6 Networking: UDP and TCP MSS depends on the IP header size (as well as the link layer header size) and cannot be represented with a single value. 2015-01-16 15:03:10 -06:00
Gregory Nutt
2663538b0a Networking: Replace all references to the macros net_ipaddr_copy, net_ipaddr_hdrcopy, net_ipaddr_cmp, net_ipaddr_hdrcmp, and net_ipaddr_maskcmp with the appropriate IPv4 or IPv6 version of the macro (such as net_ipv4addr_copy). The goal is to support both IPv4 and IPv6 simultaneously. This requires that the macros be distinct and not conditionally defined to one on or the other. 2015-01-16 13:01:08 -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
5b45605991 Clean a few more IPv6 compilation issues; Add implementation of net_ipv6_maskcmp() 2015-01-15 15:55:52 -06:00
Gregory Nutt
630366272a Networking: Seperate tcp_input() and udp_input() into seprate functions tcp_ipv4_input(), tcp_ipv6_input(), udp_ipv4_input(), and upd_ipv6_input() than can deal will the data offsets caused by the differing sizes of the IP header. 2015-01-15 15:06:46 -06:00
Gregory Nutt
60e50ff3b5 Networking: More IPv6 detanglement 2015-01-15 13:08:28 -06:00
Gregory Nutt
a7ce1279f9 Networking: (1) Copied all ICMP sources files to net/icmpv6 with proper renaming and removal of IPv4 logic, (2) remove IPv6 logic from files in net/icmp, (3) copied include/nuttx/icmp.h to icmpv6.h and removed IPv4 specific logic, (4) removed all IPv6 logic from icmp.h, (5) IP_HDRLEN became IPv4_HDRLEN and IPv6_HDRLEN, (6) ip_chksum() became ipv4_chksum() and ipv6_chksum(), and (7) added partial support for ICMPv6 statistics. 2015-01-14 16:10:38 -06:00
Gregory Nutt
a6a9452c05 net/tcp/tcp_conn.c: Fix a logic error when CONFIG_NETDEV_MULTINIC is selected: net_unlock(flags) will be called will an uninitialized variable (2015-01-03). 2015-01-02 12:03:08 -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
dc7a45ecf8 Extensions to ECP conneciton structure for the case of multiple networks. See additional comments regarding the similar change for UDP 2014-11-22 10:46:37 -06:00
Gregory Nutt
80fc094734 Make tcp_listener static scope; it is not used outside of tcp_conn.c 2014-11-22 07:14:17 -06:00
Gregory Nutt
38754a3466 Completes basic changes to support per-device/per-link TCP receive window size 2014-11-16 11:15:21 -06:00
Gregory Nutt
859748a94e Completes conversion of CONFIG_NET_BUFIZE to CONFIG_NET_ETH/SLIP_MTU 2014-11-16 09:22:38 -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
0abe6c66d7 Update everything under nuttx/net to use the corrected syslog interfaces 2014-10-08 10:48:11 -06:00