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net/udp: Minor update from review of 091e3f732e. In connect(), AF_UNSPEC is used to disconnect UDP socket. However, initial commit lacked logic to mark the socket as disconnected.

This commit is contained in:
Gregory Nutt 2018-04-25 10:13:59 -06:00
parent 091e3f732e
commit cfc5f86862
2 changed files with 24 additions and 2 deletions
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18
configs/stm32f4discovery/README.txt
View File

@ -627,6 +627,18 @@ BT860
configure a new U[S]ART and/or modify the pin selections in
include/board.h.
CC2564
------
[To be provided]
One confusing thing compared with the BT860 is in the naming of the pins
at the 4-pin RS232 TTL interface: The BT860 uses BT860-centric naming,
the Rx pin is for BT860 receive and needs to connect with the STM32 Tx
pin, the Tx pin is for BT860 transmit an needs to be connected with the
STM32 Rx pin, etc. The CC2564, on the hand, uses host-centric naming so
that the CC2564 Rx pin connects to the STM32 Rx pin, Tx to Tx pin, etc.
Troubleshooting
---------------
@ -1331,6 +1343,12 @@ Configuration Sub-directories
pin 5 Module_TX_O USART3_RX PB11, P1 pin 35
pin 6 Module_CTS_I USART3_RTS PB14, P1 pin 38
NOTICE that the BT860 uses BT860-centric naming, the Rx pin is for
BT860 receive and needs to connect with the STM32 Tx pin, the Tx pin
is for BT860 transmit an needs to be connected with the STM32 Rx pin,
etc. Other parts may use host-centric naming so that the HCI UART Rx
pin connects to the STM32 Rx pin, Tx to Tx pin, etc.
3. Due to conflicts, USART3 many not be used if Ethernet is enabled with
the STM32F4DIS-BB base board:

8
net/inet/inet_sockif.c
View File

@ -707,15 +707,19 @@ static int inet_connect(FAR struct socket *psock,
addr = NULL;
}
/* Peform the connect/disconnect operation */
/* Perform the connect/disconnect operation */
ret = udp_connect(psock->s_conn, addr);
if (ret < 0)
if (ret < 0 || addr == NULL)
{
/* Failed to connect or explicitly disconnected */
psock->s_flags &= ~_SF_CONNECTED;
}
else
{
/* Successfully connected */
psock->s_flags |= _SF_CONNECTED;
}