mirror/lwip
1
0
Fork 0
mirror of https://github.com/lwip-tcpip/lwip.git synced 2024-12-25 00:14:02 +00:00
Code Issues Packages Projects Releases Wiki Activity

Added sys_mbox_trypost_fromisr() and tcpip_callbackmsg_trycallback_fromisr()

Browse Source 
This can be used to post preallocated messages from an ISR to the tcpip thread
when using FreeRTOS, where where calls differ between task level and ISR level.

Signed-off-by: goldsimon <goldsimon@gmx.de>
This commit is contained in:
goldsimon 2018-01-05 21:08:27 +01:00
parent 1623c3e2cc
commit 8fc20142f7
3 changed files with 31 additions and 1 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

19
src/api/tcpip.c
View File

@ -531,6 +531,25 @@ tcpip_callbackmsg_trycallback(struct tcpip_callback_msg *msg)
return sys_mbox_trypost(&mbox, msg); return sys_mbox_trypost(&mbox, msg);
} }
/**
* @ingroup lwip_os
* Try to post a callback-message to the tcpip_thread mbox.
* Same as @ref tcpip_callbackmsg_trycallback but calls sys_mbox_trypost_fromisr(),
* mainly to help FreeRTOS, where calls differ between task level and ISR level.
*
* @param msg pointer to the message to post
* @return sys_mbox_trypost_fromisr() return code (without change, so this
* knowledge can be used to e.g. propagate "bool needs_scheduling")
*
* @see tcpip_callbackmsg_new()
*/
err_t
tcpip_callbackmsg_trycallback_fromisr(struct tcpip_callback_msg *msg)
{
LWIP_ASSERT("Invalid mbox", sys_mbox_valid_val(mbox));
return sys_mbox_trypost_fromisr(&mbox, msg);
}
/** /**
* @ingroup lwip_os * @ingroup lwip_os
* Initialize this module: * Initialize this module:

12
src/include/lwip/sys.h
View File

@ -295,13 +295,23 @@ void sys_mbox_post(sys_mbox_t *mbox, void *msg);
/** /**
* @ingroup sys_mbox * @ingroup sys_mbox
* Try to post a message to an mbox - may fail if full. * Try to post a message to an mbox - may fail if full.
* Can be used from ISR. * Can be used from ISR (if the sys arch layer allows this).
* Returns ERR_MEM if it is full, else, ERR_OK if the "msg" is posted. * Returns ERR_MEM if it is full, else, ERR_OK if the "msg" is posted.
* *
* @param mbox mbox to posts the message * @param mbox mbox to posts the message
* @param msg message to post (ATTENTION: can be NULL) * @param msg message to post (ATTENTION: can be NULL)
*/ */
err_t sys_mbox_trypost(sys_mbox_t *mbox, void *msg); err_t sys_mbox_trypost(sys_mbox_t *mbox, void *msg);
/**
* @ingroup sys_mbox
* Try to post a message to an mbox - may fail if full.
* To be be used from ISR.
* Returns ERR_MEM if it is full, else, ERR_OK if the "msg" is posted.
*
* @param mbox mbox to posts the message
* @param msg message to post (ATTENTION: can be NULL)
*/
err_t sys_mbox_trypost_fromisr(sys_mbox_t *mbox, void *msg);
/** /**
* @ingroup sys_mbox * @ingroup sys_mbox
* Blocks the thread until a message arrives in the mailbox, but does * Blocks the thread until a message arrives in the mailbox, but does

1
src/include/lwip/tcpip.h
View File

@ -89,6 +89,7 @@ err_t tcpip_callback(tcpip_callback_fn function, void *ctx);
struct tcpip_callback_msg* tcpip_callbackmsg_new(tcpip_callback_fn function, void *ctx); struct tcpip_callback_msg* tcpip_callbackmsg_new(tcpip_callback_fn function, void *ctx);
void tcpip_callbackmsg_delete(struct tcpip_callback_msg* msg); void tcpip_callbackmsg_delete(struct tcpip_callback_msg* msg);
err_t tcpip_callbackmsg_trycallback(struct tcpip_callback_msg* msg); err_t tcpip_callbackmsg_trycallback(struct tcpip_callback_msg* msg);
err_t tcpip_callbackmsg_trycallback_fromisr(struct tcpip_callback_msg* msg);
/* free pbufs or heap memory from another context without blocking */ /* free pbufs or heap memory from another context without blocking */
err_t pbuf_free_callback(struct pbuf *p); err_t pbuf_free_callback(struct pbuf *p);