mirror/lwip
1
0
Fork 0
mirror of https://github.com/lwip-tcpip/lwip.git synced 2024-11-19 05:10:40 +00:00
Code Issues Packages Projects Releases Wiki Activity

Fix memory leaks.

Browse Source 
When pbufs are chained, the second pbuf must be freed, if no higher level
application refers to it any longer.
This commit is contained in:
davidhaas 2003-04-09 20:28:15 +00:00
parent 18a215e6a8
commit 50f47f18c1
2 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

1
src/core/tcp_in.c
View File

@ -948,6 +948,7 @@ tcp_receive(struct tcp_pcb *pcb)
the application. */
if(recv_data) {
pbuf_chain(recv_data, cseg->p);
pbuf_free(cseg->p);
} else {
recv_data = cseg->p;
}

5
src/core/tcp_out.c
View File

@ -213,6 +213,7 @@ tcp_enqueue(struct tcp_pcb *pcb, void *arg, u16_t len,
/* Chain the headers and data pbufs together. */
pbuf_chain(seg->p, p);
pbuf_free(p);
}
/* Now that there are more segments queued, we check again if the
@ -287,6 +288,10 @@ tcp_enqueue(struct tcp_pcb *pcb, void *arg, u16_t len,
/* Remove TCP header from first segment. */
pbuf_header(queue->p, -TCP_HLEN);
pbuf_chain(useg->p, queue->p);
/* Free buffer which was merged. Note that the previous pbuf_chain call
* will have incremented the ref count, so here the ref count will still
* be 1 for the 1 pointer still being used on this buffer. */
pbuf_free(queue->p);
useg->len += queue->len;
useg->next = queue->next;