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tcpip_thread: TCPIP_MSG_INPKT: free input pbufs if the input function returns an error

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This simply wasn't the case until 6LoWPAN. However, since tcpip_input is like this, we
should stay with that pattern.

Adapted documentation in netif.h

Signed-off-by: goldsimon <goldsimon@gmx.de>
This commit is contained in:
goldsimon 2018-02-28 22:48:56 +01:00
parent 3a8af612b3
commit d9770d2c5f
2 changed files with 6 additions and 1 deletions
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4
src/api/tcpip.c
View File

@ -171,7 +171,9 @@ tcpip_thread_handle_msg(struct tcpip_msg *msg)
#if !LWIP_TCPIP_CORE_LOCKING_INPUT #if !LWIP_TCPIP_CORE_LOCKING_INPUT
case TCPIP_MSG_INPKT: case TCPIP_MSG_INPKT:
LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: PACKET %p\n", (void *)msg)); LWIP_DEBUGF(TCPIP_DEBUG, ("tcpip_thread: PACKET %p\n", (void *)msg));
msg->msg.inp.input_fn(msg->msg.inp.p, msg->msg.inp.netif); if (msg->msg.inp.input_fn(msg->msg.inp.p, msg->msg.inp.netif) != ERR_OK) {
pbuf_free(msg->msg.inp.p);
}
memp_free(MEMP_TCPIP_MSG_INPKT, msg); memp_free(MEMP_TCPIP_MSG_INPKT, msg);
break; break;
#endif /* !LWIP_TCPIP_CORE_LOCKING_INPUT */ #endif /* !LWIP_TCPIP_CORE_LOCKING_INPUT */

3
src/include/lwip/netif.h
View File

@ -171,6 +171,9 @@ typedef err_t (*netif_init_fn)(struct netif *netif);
* *
* @param p The received packet, copied into a pbuf * @param p The received packet, copied into a pbuf
* @param inp The netif which received the packet * @param inp The netif which received the packet
* @return ERR_OK if the packet was handled
* != ERR_OK is the packet was NOT handled, in this case, the caller has
* to free the pbuf
*/ */
typedef err_t (*netif_input_fn)(struct pbuf *p, struct netif *inp); typedef err_t (*netif_input_fn)(struct pbuf *p, struct netif *inp);