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struct udp_pcb.multicast_ip must be an ip_addr_t, too, to completely avoid temporary storage

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This commit is contained in:
goldsimon
2015-09-24 14:55:55 +02:00
parent e11e12f01d
commit 99d2e5233d
2 changed files with 6 additions and 10 deletions
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10
src/core/udp.c
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@@ -570,9 +570,6 @@ udp_sendto_chksum(struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *dst_ip,
#endif /* LWIP_CHECKSUM_ON_COPY && CHECKSUM_GEN_UDP */
struct netif *netif;
const ip_addr_t *dst_ip_route = dst_ip;
#if LWIP_IPV6 && LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS
ip_addr_t dst_ip_tmp;
#endif /* LWIP_IPV6 && LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS */
if ((pcb == NULL) || !IP_ADDR_PCB_VERSION_MATCH(pcb, dst_ip)) {
return ERR_VAL;
@@ -594,10 +591,9 @@ udp_sendto_chksum(struct udp_pcb *pcb, struct pbuf *p, const ip_addr_t *dst_ip,
administratively selected interface for multicast by default.
However, this can be overridden by setting an interface address
in pcb->multicast_ip that is used for routing. */
if (!ip4_addr_isany(&pcb->multicast_ip) &&
!ip4_addr_cmp(&pcb->multicast_ip, IP4_ADDR_BROADCAST)) {
ip_addr_copy_from_ip4(dst_ip_tmp, pcb->multicast_ip);
dst_ip_route = &dst_ip_tmp;
if (!ip_addr_isany(&pcb->multicast_ip) &&
!ip4_addr_cmp(ip_2_ip4(&pcb->multicast_ip), IP4_ADDR_BROADCAST)) {
dst_ip_route = & pcb->multicast_ip;
}
#endif /* LWIP_IPV4 && LWIP_MULTICAST_TX_OPTIONS */
}