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This commit is contained in:
goldsimon 2010-01-13 15:17:01 +00:00
parent 59005b544f
commit 6df94d3c76
1 changed files with 13 additions and 6 deletions
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19
src/core/udp.c
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@ -505,8 +505,9 @@ udp_sendto_if(struct udp_pcb *pcb, struct pbuf *p,
udphdr->chksum = inet_chksum_pseudo_partial(q, src_ip, dst_ip,
IP_PROTO_UDPLITE, q->tot_len, chklen);
/* chksum zero must become 0xffff, as zero means 'no checksum' */
if (udphdr->chksum == 0x0000)
if (udphdr->chksum == 0x0000) {
udphdr->chksum = 0xffff;
}
#endif /* CHECKSUM_CHECK_UDP */
/* output to IP */
LWIP_DEBUGF(UDP_DEBUG, ("udp_send: ip_output_if (,,,,IP_PROTO_UDPLITE,)\n"));
@ -527,7 +528,9 @@ udp_sendto_if(struct udp_pcb *pcb, struct pbuf *p,
if ((pcb->flags & UDP_FLAGS_NOCHKSUM) == 0) {
udphdr->chksum = inet_chksum_pseudo(q, src_ip, dst_ip, IP_PROTO_UDP, q->tot_len);
/* chksum zero must become 0xffff, as zero means 'no checksum' */
if (udphdr->chksum == 0x0000) udphdr->chksum = 0xffff;
if (udphdr->chksum == 0x0000) {
udphdr->chksum = 0xffff;
}
}
#endif /* CHECKSUM_CHECK_UDP */
LWIP_DEBUGF(UDP_DEBUG, ("udp_send: UDP checksum 0x%04"X16_F"\n", udphdr->chksum));
@ -602,7 +605,7 @@ udp_bind(struct udp_pcb *pcb, struct ip_addr *ipaddr, u16_t port)
combine with implementation of UDP PCB flags. Leon Woestenberg. */
#ifdef LWIP_UDP_TODO
/* port matches that of PCB in list? */
else
else {
if ((ipcb->local_port == port) &&
/* IP address matches, or one is IP_ADDR_ANY? */
(ip_addr_isany(&(ipcb->local_ip)) ||
@ -613,6 +616,7 @@ udp_bind(struct udp_pcb *pcb, struct ip_addr *ipaddr, u16_t port)
("udp_bind: local port %"U16_F" already bound by another pcb\n", port));
return ERR_USE;
}
}
#endif
}
@ -632,10 +636,11 @@ udp_bind(struct udp_pcb *pcb, struct ip_addr *ipaddr, u16_t port)
port++;
/* restart scanning all udp pcbs */
ipcb = udp_pcbs;
} else
} else {
/* go on with next udp pcb */
ipcb = ipcb->next;
}
}
if (ipcb != NULL) {
/* no more ports available in local range */
LWIP_DEBUGF(UDP_DEBUG, ("udp_bind: out of free UDP ports\n"));
@ -682,9 +687,10 @@ udp_connect(struct udp_pcb *pcb, struct ip_addr *ipaddr, u16_t port)
if (pcb->local_port == 0) {
err_t err = udp_bind(pcb, &pcb->local_ip, pcb->local_port);
if (err != ERR_OK)
if (err != ERR_OK) {
return err;
}
}
ip_addr_set(&pcb->remote_ip, ipaddr);
pcb->remote_port = port;
@ -782,7 +788,7 @@ udp_remove(struct udp_pcb *pcb)
/* make list start at 2nd pcb */
udp_pcbs = udp_pcbs->next;
/* pcb not 1st in list */
} else
} else {
for (pcb2 = udp_pcbs; pcb2 != NULL; pcb2 = pcb2->next) {
/* find pcb in udp_pcbs list */
if (pcb2->next != NULL && pcb2->next == pcb) {
@ -790,6 +796,7 @@ udp_remove(struct udp_pcb *pcb)
pcb2->next = pcb->next;
}
}
}
memp_free(MEMP_UDP_PCB, pcb);
}