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16 Commits

Author SHA1 Message Date
Xiang Xiao
6a3c2aded6 Fix wait loop and void cast (#24) 
* Simplify EINTR/ECANCEL error handling

1. Add semaphore uninterruptible wait function
2 .Replace semaphore wait loop with a single uninterruptible wait
3. Replace all sem_xxx to nxsem_xxx

* Unify the void cast usage

1. Remove void cast for function because many place ignore the returned value witout cast
2. Replace void cast for variable with UNUSED macro
 2020-01-02 10:54:43 -06:00
Gregory Nutt
16b1c276bd net/netlink/netlink_conn.c: Fix some really basic errors in the redesign of the asynchronous Netlink response logic. 2019-11-28 16:14:59 -06:00
Gregory Nutt
4ae09a3b80 net/netlink: Redesign the logic that handles notifications of when response data is available. Signal handlers are sub-optimal inside the OS (especially after the preceding change which forces the hand). Instead, use the work queue notifiers as is done with all other network notifiers. 2019-11-28 14:20:40 -06:00
Gregory Nutt
69318b1024 Re-implements reverted commit 344f7bc9f6 in a way that should not have the undesired side-effect. include/nuttx/sched.h: Add a bit to the TCB flags to indicat the thread is a user thread in a syscall. sched/nuttx/nxsig_dispatch.c: Delay dispatching to signal handlers if within a system call. In all syscall implementations: Process delayed signal handling when exiting system call. 2019-11-28 12:47:36 -06:00
Gregory Nutt
cbdd590c82 Revert "include/nuttx/sched.h: Add storage for a previous signal mask. arch/: In all syscall implementations, block all signals before dispatching a system call; resotre signal mask when the system call returns." 
Using the sigprocmask() for this purpose has too many side-effects.

This reverts commit 344f7bc9f6.
 2019-11-28 11:57:54 -06:00
Gregory Nutt
344f7bc9f6 include/nuttx/sched.h: Add storage for a previous signal mask. arch/: In all syscall implemenations, block all signals before dispatching a system call; resotre signal mask when the system call returnes. 2019-11-28 10:51:29 -06:00
Gregory Nutt
d1593bb336 Squashed commit of the following: 
net/netlink/netlink_sockif.c:  At implementation of response available signal handler needed for POLLIN logic.
    net/netlink/netlink_sockif.c:  Add logic to set up signal handler to receive the response notification.
 2019-11-27 21:30:01 -06:00
Gregory Nutt
a8f3c3651a net/netlink/netlink_conn.c: Use nxsig_queue() instead of nxsig_kill() so that we can pass a reference to the connection structure with the signal. 2019-11-27 19:31:23 -06:00
Gregory Nutt
93ed8b66d9 net/netlink: Add partial support for the NETLINK poll() operation. Still missing is some signal handling logic that actually wakes up the poll() when an asynchronous NETLLINK response is available. 
So although the poll() implemenation is still not yet usable, the commit is useful because it (1) does not harm, and (2) incidentally fixes a few other issues in the NETLONK response queuing that I noted in the process.
 2019-11-26 18:52:22 -06:00
Gregory Nutt
bc8d964cb9 net/netlink: Add some comments about 'Input Parameters' 2019-11-19 20:46:43 -06:00
Gregory Nutt
936d69da1f net/netlink and include/nuttx/net/netlink.h: Make netlink_add_response() a globally access part of the network interface. This is necesssary to support netlink components that reside outside of the net/ sandbox. 2019-11-18 21:12:50 -06:00
Gregory Nutt
6479775721 net/netlink/netlink_conn.c: Add support for asynchronous Netlink responses. 2019-11-18 09:48:14 -06:00
Gregory Nutt
38e527deeb net/netlink: Fix cosmetic issues, mostly typo fixes. 2019-11-04 14:06:07 -06:00
Gregory Nutt
6d13705e93 net/netlink: The NETLINK_ROUTE logic needs to return the first queued response and not attempt to match up reponses with requests. That is the Linux compatible way. Also, use queue.h functions for list management and fix an error in arp_snapshot(). 2019-11-04 09:02:14 -06:00
Gregory Nutt
2991987018 net/netlink/netlink_route.c (mostly): This completes a minimal netlink implementation that will retrieve the ARP table. 
net/netlink:  Add basic hooks (only) to support the NETLINK_ROUTE protocol.
 2019-11-03 13:59:42 -06:00
Gregory Nutt
056d704cf9 This commit brings in a fragmentary, experimental implementation of NETLINK sockets. There is not too much to that socket support on this initial commit, just the netlink socketer framework. However, I decided to bring it into master because there is a enough that I would not want to lose what is in place. And since it is dependent on CONFIG_EXPERIMENATL, its presence on master should be innocuous. 
Squashed commit of the following:

    net/netlink:  Mark netlink support as EXPERIMENTAL.
    net/netlink/netlink_sockif.c:  Add netlink_getpeername to the socket interface.
    net:  Add getpeeername() support for netlink sockets.
    include/netpacket/netlink.h:  Add a few more definitions and structures used at the NetLink interface.  Still missing many.
    net/netlink:  Add basic framework for Netlink socket support.
    include/:  Add basic Netlink definitions.
 2018-08-03 13:22:36 -06:00