It is better to present correct IP types in netconn API.
Netconn API now accepts IPv6 mapped IPv4 addresses as well as IPv6 and IPv4 in send(), bind() and connect(), but does NOT map IPv4 to IPv6 mapped IPv4 in getaddr() and receive() functions.
Let lwip use functions/macros prefixed by lwip_ internally to avoid naming clashes with external #includes.
Remove over-complicated #define handling in def.h
Make functions easier to override in cc.h. The following is sufficient now (no more LWIP_PLATFORM_BYTESWAP):
#define lwip_htons(x) <your_htons>
#define lwip_htonl(x) <your_htonl>
Simon and I think it can be removed - the receive window handling get a little less precise, but that should be OK for a lightweight stack.
Receive window is now updated with the whole pbuf size (instead of only count of read bytes from socket) as soon as socket implementation gets a pbuf from netconn layer.
Work on bug #47512: MPU_COMPATIBLE may fail on empty pool (still not finished)
This commit optimizes the sendmsg UDP pbuf chain creation by not
allocating/freeing a netbuf per io vector and instead building a pbuf
chain directly in the sockets layer
Fix a bug in the socket API's ioctl for FIONREAD. If the socket's
lastdata was assigned the function returned without error but did not
update the argument pointer.
The cast type for argp was also changed to int to conform with the
other SO_RCVBUF handling.
This makes a couple of simple re-arrangements in lwip_selscan() that
should improve performance in the following ways:
1) The old code linearly walked all sockets to maxfd regardless of
whether they were set in the fd set. The process involved
acquiring sys arch protect, looking up the socket, and then
checking if the socket was present in any of the fd sets. On
systems with lots of sockets and a heavy SYS_ARCH_PROTECT
infrastructure (a mutex) this can result in a lot of extra work.
Now we skip this process for any fd that is not in the input sets
2) If the socket from tryget_socket() is NULL we no longer continue
and compare the input fd sets with a zeroed out set of events
3) We no longer need to zero out our event sets because they are
only accessed when tryget_socket() is successful
lwip_selscan() is called at most once per select call and sometimes up to three times
tcpip_callback_with_block() can fail with ERR_MEM or ERR_VAL, and in the
error paths the code does not post the msg to the mailbox thus the
sys_sem_wait() call might wait forever. Fix it by testing return value of
tcpip_callback() and return error immediately.
Signed-off-by: Axel Lin <axel.lin@ingics.com>
