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Don't chain empty pbufs when sending them (fixes bug #30625)

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This commit is contained in:
goldsimon 2010-08-03 08:38:59 +00:00
parent 229137cad1
commit aaa8d2795e
3 changed files with 11 additions and 4 deletions
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3
CHANGELOG
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@ -229,6 +229,9 @@ HISTORY
++ Bugfixes:
2010-08-03: Simon Goldschmidt
* udp.c, raw.c: Don't chain empty pbufs when sending them (fixes bug #30625)
2010-08-01: Simon Goldschmidt (patch by Greg Renda)
* ppp.c: Applied patch #7264 (PPP protocols are rejected incorrectly on big
endian architectures)

6
src/core/raw.c
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@ -218,8 +218,10 @@ raw_sendto(struct raw_pcb *pcb, struct pbuf *p, ip_addr_t *ipaddr)
LWIP_DEBUGF(RAW_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("raw_sendto: could not allocate header\n"));
return ERR_MEM;
}
/* chain header q in front of given pbuf p */
pbuf_chain(q, p);
if (p->tot_len != 0) {
/* chain header q in front of given pbuf p */
pbuf_chain(q, p);
}
/* { first pbuf q points to header pbuf } */
LWIP_DEBUGF(RAW_DEBUG, ("raw_sendto: added header pbuf %p before given pbuf %p\n", (void *)q, (void *)p));
} else {

6
src/core/udp.c
View File

@ -520,8 +520,10 @@ udp_sendto_if_chksum(struct udp_pcb *pcb, struct pbuf *p, ip_addr_t *dst_ip,
LWIP_DEBUGF(UDP_DEBUG | LWIP_DBG_TRACE | LWIP_DBG_LEVEL_SERIOUS, ("udp_send: could not allocate header\n"));
return ERR_MEM;
}
/* chain header q in front of given pbuf p */
pbuf_chain(q, p);
if (p->tot_len != 0) {
/* chain header q in front of given pbuf p (only if p contains data) */
pbuf_chain(q, p);
}
/* first pbuf q points to header pbuf */
LWIP_DEBUGF(UDP_DEBUG,
("udp_send: added header pbuf %p before given pbuf %p\n", (void *)q, (void *)p));