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Added pbuf_alloc() return value checks in ip_frag().

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This commit is contained in:
christiaans 2006-03-03 11:25:36 +00:00
parent 11a820458f
commit 61dc2e7dd5
2 changed files with 17 additions and 6 deletions
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6
CHANGELOG
View File

@ -17,6 +17,10 @@ FUTURE
HISTORY
2006-03-03 Christiaan Simons
* ipv4/ip_frag.c: Added bound-checking assertions on ip_reassbitmap
access and added pbuf_alloc() return value checks.
2006-01-01 Leon Woestenberg <leon.woestenberg@gmx.net>
* tcp_{in,out}.c, tcp_out.c: Removed 'even sndbuf' fix in TCP, which is
now handled by the checksum routine properly.
@ -24,7 +28,7 @@ HISTORY
2006-02-27 Leon Woestenberg <leon.woestenberg@gmx.net>
* pbuf.c: Fix alignment; pbuf_init() would not work unless
pbuf_pool_memory[] was properly aligned. (Patch by Curt McDowell.)
2005-12-20 Leon Woestenberg <leon.woestenberg@gmx.net>
* tcp.c: Remove PCBs which stay in LAST_ACK state too long. Patch
submitted by Mitrani Hiroshi.

17
src/core/ipv4/ip_frag.c
View File

@ -304,6 +304,9 @@ ip_frag(struct pbuf *p, struct netif *netif, struct ip_addr *dest)
/* Get a RAM based MTU sized pbuf */
rambuf = pbuf_alloc(PBUF_LINK, 0, PBUF_REF);
if (rambuf == NULL) {
return ERR_MEM;
}
rambuf->tot_len = rambuf->len = mtu;
rambuf->payload = MEM_ALIGN((void *)buf);
@ -347,11 +350,15 @@ ip_frag(struct pbuf *p, struct netif *netif, struct ip_addr *dest)
* worked would make things simpler.
*/
header = pbuf_alloc(PBUF_LINK, 0, PBUF_RAM);
pbuf_chain(header, rambuf);
netif->output(netif, header, dest);
IPFRAG_STATS_INC(ip_frag.xmit);
pbuf_free(header);
if (header != NULL) {
pbuf_chain(header, rambuf);
netif->output(netif, header, dest);
IPFRAG_STATS_INC(ip_frag.xmit);
pbuf_free(header);
} else {
pbuf_free(rambuf);
return ERR_MEM;
}
left -= cop;
}
pbuf_free(rambuf);