Commit Graph

88 Commits

Author SHA1 Message Date
Gregory Nutt
b49be4bb20 Squashed commit of the following:
arch/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    sched/ audio/ crypto/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    Documentation/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    fs/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    graphics/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    net/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    drivers/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    include/, syscall/, wireless/:  Removed all references to CONFIG_DISABLE_POLL.  The standard POSIX poll() can not longer be disabled.
    configs/:  Remove all references to CONFIG_DISABLE_POLL.  Standard POSIX poll can no longer be disabled.
2019-05-21 18:57:54 -06:00
Gregory Nutt
0bc800d71f net/tcp/tcp.h: Fix a muffed edit to conditional found in build testing. 2019-02-11 15:54:31 -06:00
Gregory Nutt
efe65749ce Fix condition logic: The setup seems to support a network without sockets. That is not the case.
Squashed commit of the following:

    sched/sched/sched_getsockets.c:  Fix an error in conditional compilation.
    fs/:  Remove all conditional logic based on CONFIG_NSOCKET_DESCRIPTORS == 0
    Documentation/:  Remove all references to CONFIG_NSOCKET_DESCRIPTORS == 0
    include/:  Remove all conditional logic based on CONFIG_NSOCKET_DESCRIPTORS == 0
    libs/:  Remove all conditional logic based on CONFIG_NSOCKET_DESCRIPTORS == 0
    net/:  Remove all conditional logic based on CONFIG_NSOCKET_DESCRIPTORS == 0
    sched/:  Remove all conditional logic based on CONFIG_NSOCKET_DESCRIPTORS == 0
    syscall/:  Remove all conditional logic based on CONFIG_NSOCKET_DESCRIPTORS == 0
    tools/:  Fixups for CONFIG_NSOCKET_DESCRIPTORS no longer used to disable sockets.
2019-02-11 15:47:25 -06:00
Xiang Xiao
d2cfd398ba Fix compiler error and warning when CONFIG_NET_SENDFILE=y 2018-11-09 11:17:43 -06:00
Gregory Nutt
42a018747e net/devif, net/tcp, and net/udp: Extend the logic of 6c0ab0e077 so that all support Transport protocols support by IPv6 can handle the presence of IPv6 header extension options. 2018-11-02 17:50:01 -06:00
Gregory Nutt
09d5d05b95 net/TCP: Extend the TCP notification logic logic so that it will also report loss of connection events. 2018-09-09 17:32:10 -06:00
Gregory Nutt
9d3148406c Signals were not a good choice of IPC to implement the poll function for several reasons: In order to handle the asynchrnous poll-related event, a substantial amount of state information is needed. Signals are only capable of passing minimal amounts of data. There are also complexities with performing kernel space signal handlers in kernel space code that is better to avoid. So, instead of signals, the equivalent logic was converted to run via a callback that executes on the high-priority work queue.
Squashed commit of the following:

    Fix up some final compile isses.

    net/netdev:  Convert the network down notification logic to use the new wqueue-based notification factility.

    net/udp:  Convert the UDP readahead notification logic to use the new wqueue-based notification factility.

    net/tcp:  Convert the TCP readahead notification logic to use the new wqueue-based notification factility.

    mm/iob:  Convert the IOB notification logic to use the new wqueue-based notification factility.

    sched/wqueue:  Signals are not good IPCs to support the target poll functionality for several reasons including the amount of data that can be passed with a signal and in the fact that in protected and kernel modes, user threads executing signal handlers in protected, kernel memory is problematic.  Instead, convert the same logic to perform the notifications via function callback on the high priority work queue.
2018-09-09 15:01:44 -06:00
Gregory Nutt
20814acad2 sched/signal: In signal notification facility, use sigqueue() to notify vs. kill(). With sigqueue, we can pass more info (but still not enough). 2018-09-09 11:57:25 -06:00
Gregory Nutt
28f73bd928 net/tcp and udp: Add logic to signal events when TCP or UDP read-ahead data is buffered.
Squashed commit of the following:

    net/tcp:  Add signal notification for the case when UDP read-ahead data is buffered.  This is basically of clone of the TCP notification logic with naming adapted for UDP.

    net/tcp:  Add signal notification for the case when TCP read-ahead data is buffered.
2018-09-09 09:21:39 -06:00
Gregory Nutt
73c4b1610b net/tcp: Set the default TCP MSS to the value required by RFC 879 and never change it under any circumstance unless the remote host requests a larger MSS via an option the TCP header. 2018-07-05 10:54:45 -06:00
Gregory Nutt
e59b26370d Squashed commit of the following:
Fix a few typo/compilation problems.
    net/:  Remove all CONFIG_NET_xxx_TCP_RECVWNDO configuration variables.  They were used only to initialize the d_recwndo of the network device structure which no longer exists.
    net/:  Remove the device TCP receive window field (d_recvwndo) from the device structure.  That value is no longer retained, but is calculated dynamically.
    Remove some dangling references to CONFIG_NET_TCP_RWND_CONTROL.
    net/tcp:  Take read-ahead throttling into account when calculating the TCP receive window size.
    net/tcp: tcp_get_recvwindow() now returns the receive window size directly (vs. indirectly via the device structure).
    net/tcp:  Remove CONFIG_NET_TCP_RWND_CONTROL.  TCP window algorithm is now trigged only by CONFIG_NET_TCP_READAHEAD.
2018-07-01 07:59:33 -06:00
Gregory Nutt
b32d8b1714 net/tcp and sixlowpan: Separate the the TCP receive window calculations to a separate header file. It must also be used by the special 6LoWPAN TCP logic. 2018-06-30 20:50:07 -06:00
Gregory Nutt
c65e1aa3df Squashed commit of the following:
syscalls/:  Add syscall support for if_nametoindex() and if_indextoname()
    net/: Update some comments.
2018-06-25 12:41:28 -06:00
Gregory Nutt
8fdbb1e0a4 Elimate use of the non-standard type systime_t and replace it the equivalent, standard type clock_t
Squashed commit of the following:

    sched:  Rename all use of system_t to clock_t.
    syscall:  Rename all use of system_t to clock_t.
    net:  Rename all use of system_t to clock_t.
    libs:  Rename all use of system_t to clock_t.
    fs:  Rename all use of system_t to clock_t.
    drivers:  Rename all use of system_t to clock_t.
    arch:  Rename all use of system_t to clock_t.
    include:  Remove definition of systime_t; rename all use of system_t to clock_t.
2018-06-16 12:16:13 -06:00
Pelle Windestam
303e6499bd net/tcp: Extended support for sending to non-blocking tcp sockets. 2018-04-20 07:37:51 -06:00
Gregory Nutt
b54ffe858a Standardization of some function headers. 2018-03-13 09:52:27 -06:00
Gregory Nutt
251924a734 Squashed commit of the following:
net/tcp:  Add logic to send probes when SO_KEEPALIVE is enabled.
    net/tcp:  TCP socket should not have to be connected to configure KeepAlive.
    net/: Add a separate configuration to enable/disable KEEPALIVE socket options.
    net/tcp: Arguments to TCP keep-alive timing functions probably should be struct timeval as are the times for other time-related socket options.
    net/tcp:  Fix a backward conditional
    net/tcp:  Add some more checks and debug output to TCP-protocol socket options.
    net/tcp:  Cosmetic changes to some alignment.
    net/:  Adds socket options needed to manage TCP-keepalive and TCP state machine logic to detect if that the remote peer is alive.  Still missing the timer poll logic to send the keep-alive probes and the state machine logic to respond to probes.
2018-03-12 10:59:46 -06:00
Gregory Nutt
7cf88d7dbd Make sure that labeling is used consistently in all function headers. 2018-02-01 10:00:02 -06:00
Gregory Nutt
289e4dde06 net/udp and tcp: Yet another (cosmetic) change to UDP and TCP write buffer macro naming. 2018-01-22 19:33:14 -06:00
Gregory Nutt
12d7125b75 net/tcp: Write buffering logic should not wait for a free buffer if the socket was opened non-blocking. Also, rename the TCP write buffering macros from WRB_* to TCPWB_* to make room in the namespace for write buffering with other protocols. 2018-01-22 11:11:23 -06:00
Gregory Nutt
7ebef900fb Networking: Fix a race condition. The accept() operation is performed with the network locked. However, the network is unlocked BEFORE the connected state is set. Therefore, a context switch may occur and the socket may no longer be connected when it is marked so. Noted by Pascal Speck. 2017-08-31 07:23:19 -06:00
Gregory Nutt
04ad162540 Networking: Clean up some naming that has bothered me for a long time... There are no interrupts and no interrupt handlers in the network. There are events and event handler (there used to to be interrupt logic in there years ago but that is long, long gone). 2017-08-29 14:08:04 -06:00
Gregory Nutt
171d183e8e Networking: A placeholder for some missing logic in the previous change related to monitoring network status for dup'ed sockets. If one of the dup'ed socket's is closed, then network monitor resources associated with that one socket must be recovered. Also, in the event that socket is being used on one thread, but then closed on another, any threads waiting for events from the socket should be informed of the closure. That latter requirement is not implemented because current data structures do not support it. 2017-08-29 13:24:49 -06:00
Gregory Nutt
0f7a52bc28 Networking: Fix a runaway recursion problem introduced the previous fixe for shutting down dup'ed sockets. 2017-08-29 12:27:58 -06:00
Gregory Nutt
9db65dea78 Networking: TCP disconnection callbacks are not retained in a list. This will support mutiple callbacks per lower-level TCP connection structure. That is necessary for the cae where a socket is dup'ed and shares the same lower-level connection structure. NOTE: There still needs to be a call to tcp_start_monitor() when the socket is dup'ed. 2017-08-29 10:38:01 -06:00
Gregory Nutt
ed58536c3a Networking: Move two more TCP specific files from inet/ to tcp/. There is other TCP-specific logic in inet/ that should be moved sometime, but those are more entangled. 2017-08-29 09:25:22 -06:00
Gregory Nutt
92f44c5607 Networking: Move net/inet/net_monitor.c to net/tcp/tcp_monitor.c in preparation for design change to fix monitoring of duplicated sockets. 2017-08-29 08:40:13 -06:00
Gregory Nutt
bd7c84b23e Remove CONFIG_NETDEV_MULTINIC. This increases code size by a little, but greatly reduces the complexity of the network code. 2017-08-08 14:24:12 -06:00
Gregory Nutt
aa2e9c15a5 IP forwarding: Major rearchitecting of the outgoing portion of the IP forwarding logic necessary into to properly received device-related forwarding events. 2017-07-07 20:19:26 -06:00
Gregory Nutt
7258f1cbfc IP forwarding: Move to separate directory. A few fixes from early testing; In TUN driver, do all polling on worker thread. Otherwise, the stack gets very deep. 2017-07-07 18:33:06 -06:00
Gregory Nutt
31f832d8c5 IP forwarding: Flesh out TCP, UDP, and ICMPv6 packet forwarding logic. 2017-07-05 11:01:16 -06:00
Gregory Nutt
c0c275c8fc IP forwarding. Adds a little more structure to handle passing packets received on one network device to another network device. Logic is still incomplete. 2017-07-04 10:19:52 -06:00
Gregory Nutt
83a875f394 IP forwarding: Add some fragments of TCP forwarding logic. 2017-07-03 15:58:01 -06:00
Masayuki Ishikawa
32a638cdfe TCP: Fix tcp_findlistner() in dual stack mode
Signed-off-by: Masayuki Ishikawa <masayuki.ishikawa@gmail.com>
2017-05-25 16:54:19 +09:00
Gregory Nutt
d339ba9e0e TCP: Fix some potential error conditions that could result from deferring the connection until the full 3-way handshake has completed. 2017-05-14 10:56:25 -06:00
Gregory Nutt
0de294a586 Fix lots of occurrences of 'the the', 'the there', 'the these', 'the then', 'the they. 2017-05-11 13:35:56 -06:00
Gregory Nutt
2043e1a114 IOBs: Move from driver/iob to a better location in mm/iob 2017-05-09 07:35:30 -06:00
Gregory Nutt
d5207efb5a Be consistent... Use Name: consistent in function headers vs Function: 2017-04-21 16:33:14 -06:00
Gregory Nutt
bcc6b61fc1 Move include/nuttx/net/iob.h to include/drivers/iob.h; rename CONFIG_NET_IOB to CONFIG_DRIVERS_IOB 2017-04-20 14:53:30 -06:00
Jussi Kivilinna
cd3c9634c8 Add user-space networking stack API (usrsock)
User-space networking stack API allows user-space daemon to
provide TCP/IP stack implementation for NuttX network.

Main use for this is to allow use and seamless integration of
HW-provided TCP/IP stacks to NuttX.

For example, user-space daemon can translate /dev/usrsock
API requests to HW TCP/IP API requests while rest of the
user-space can access standard socket API, with socket
descriptors that can be used with NuttX system calls.
2017-03-31 08:58:14 -06:00
Jakub Łągwa
338b915008 While working with version 7.10 I discovered a problem in TCP stack that could be observed on high network load. Generally speaking, the problem is that RST flag is set in unnecessary case, in which between loss of some TCP packet and its proper retransmission, another packets had been successfully sent. The scenario is as follows: NuttX did not receive ACK for some sent packet, so it has been probably lost somewhere. But before its retransmission starts, NuttX is correctly issuing next TCP packets, with sequence numbers increasing properly. When the retransmission of previously lost packet finally succeeds, tcp_input receives the accumulated ACK value, which acknowledges also the packets sent in the meantime (i.e. between unsuccessful sending of lost packet and its proper retransmission). However, variable unackseq is still set to conn->isn + conn->sent, which is truth only if no further packets transmission occurred in the meantime. Because of incorrect (in such specific case) unackseq value, few lines further condition if (ackseq <= unackseq)is not met, and, as a result, we are going to reset label. 2016-06-20 06:55:29 -06:00
Gregory Nutt
1cdc746726 Rename CONFIG_DEBUG to CONFIG_DEBUG_FEATURES 2016-06-11 14:14:08 -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
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
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
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
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