mirror of
https://github.com/lwip-tcpip/lwip.git
synced 2024-07-04 20:08:57 +00:00
Improve formatting by fixing wrong indents and lines too long.
This commit is contained in:
curtmcd
parent
9ca9649c1b
commit
047e3455f7
231
src/core/udp.c
231
src/core/udp.c
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@ -100,7 +100,8 @@ udp_input(struct pbuf *p, struct netif *inp)
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if (pbuf_header(p, -((s16_t)(UDP_HLEN + IPH_HL(iphdr) * 4)))) {
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/* drop short packets */
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LWIP_DEBUGF(UDP_DEBUG, ("udp_input: short UDP datagram (%"U16_F" bytes) discarded\n", p->tot_len));
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LWIP_DEBUGF(UDP_DEBUG,
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("udp_input: short UDP datagram (%"U16_F" bytes) discarded\n", p->tot_len));
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UDP_STATS_INC(udp.lenerr);
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UDP_STATS_INC(udp.drop);
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snmp_inc_udpinerrors();
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@ -118,40 +119,44 @@ udp_input(struct pbuf *p, struct netif *inp)
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udp_debug_print(udphdr);
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/* print the UDP source and destination */
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LWIP_DEBUGF(UDP_DEBUG, ("udp (%"U16_F".%"U16_F".%"U16_F".%"U16_F", %"U16_F") <-- (%"U16_F".%"U16_F".%"U16_F".%"U16_F", %"U16_F")\n",
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ip4_addr1(&iphdr->dest), ip4_addr2(&iphdr->dest),
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ip4_addr3(&iphdr->dest), ip4_addr4(&iphdr->dest), ntohs(udphdr->dest),
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ip4_addr1(&iphdr->src), ip4_addr2(&iphdr->src),
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ip4_addr3(&iphdr->src), ip4_addr4(&iphdr->src), ntohs(udphdr->src)));
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LWIP_DEBUGF(UDP_DEBUG,
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("udp (%"U16_F".%"U16_F".%"U16_F".%"U16_F", %"U16_F") <-- "
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"(%"U16_F".%"U16_F".%"U16_F".%"U16_F", %"U16_F")\n",
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ip4_addr1(&iphdr->dest), ip4_addr2(&iphdr->dest),
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ip4_addr3(&iphdr->dest), ip4_addr4(&iphdr->dest), ntohs(udphdr->dest),
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ip4_addr1(&iphdr->src), ip4_addr2(&iphdr->src),
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ip4_addr3(&iphdr->src), ip4_addr4(&iphdr->src), ntohs(udphdr->src)));
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local_match = 0;
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uncon_pcb = NULL;
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/* Iterate through the UDP pcb list for a matching pcb */
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for (pcb = udp_pcbs; pcb != NULL; pcb = pcb->next) {
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/* print the PCB local and remote address */
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LWIP_DEBUGF(UDP_DEBUG, ("pcb (%"U16_F".%"U16_F".%"U16_F".%"U16_F", %"U16_F") --- (%"U16_F".%"U16_F".%"U16_F".%"U16_F", %"U16_F")\n",
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ip4_addr1(&pcb->local_ip), ip4_addr2(&pcb->local_ip),
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ip4_addr3(&pcb->local_ip), ip4_addr4(&pcb->local_ip), pcb->local_port,
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ip4_addr1(&pcb->remote_ip), ip4_addr2(&pcb->remote_ip),
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ip4_addr3(&pcb->remote_ip), ip4_addr4(&pcb->remote_ip), pcb->remote_port));
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LWIP_DEBUGF(UDP_DEBUG,
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("pcb (%"U16_F".%"U16_F".%"U16_F".%"U16_F", %"U16_F") --- "
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"(%"U16_F".%"U16_F".%"U16_F".%"U16_F", %"U16_F")\n",
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ip4_addr1(&pcb->local_ip), ip4_addr2(&pcb->local_ip),
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ip4_addr3(&pcb->local_ip), ip4_addr4(&pcb->local_ip), pcb->local_port,
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ip4_addr1(&pcb->remote_ip), ip4_addr2(&pcb->remote_ip),
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ip4_addr3(&pcb->remote_ip), ip4_addr4(&pcb->remote_ip), pcb->remote_port));
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/* compare PCB local addr+port to UDP destination addr+port */
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if ((pcb->local_port == dest) &&
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(ip_addr_isany(&pcb->local_ip) ||
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ip_addr_cmp(&(pcb->local_ip), &(iphdr->dest)))) {
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local_match = 1;
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if ((uncon_pcb == NULL) &&
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((pcb->flags & UDP_FLAGS_CONNECTED) == 0)) {
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/* the first unconnected matching PCB */
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uncon_pcb = pcb;
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}
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(ip_addr_isany(&pcb->local_ip) ||
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ip_addr_cmp(&(pcb->local_ip), &(iphdr->dest)))) {
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local_match = 1;
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if ((uncon_pcb == NULL) &&
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((pcb->flags & UDP_FLAGS_CONNECTED) == 0)) {
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/* the first unconnected matching PCB */
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uncon_pcb = pcb;
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}
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}
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/* compare PCB remote addr+port to UDP source addr+port */
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if ((local_match != 0) &&
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(pcb->remote_port == src) &&
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(ip_addr_isany(&pcb->remote_ip) ||
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ip_addr_cmp(&(pcb->remote_ip), &(iphdr->src)))) {
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/* the first fully matching PCB */
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(pcb->remote_port == src) &&
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(ip_addr_isany(&pcb->remote_ip) ||
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ip_addr_cmp(&(pcb->remote_ip), &(iphdr->src)))) {
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/* the first fully matching PCB */
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break;
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}
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}
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@ -161,8 +166,7 @@ udp_input(struct pbuf *p, struct netif *inp)
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}
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/* Check checksum if this is a match or if it was directed at us. */
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if (pcb != NULL || ip_addr_cmp(&inp->ip_addr, &iphdr->dest))
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{
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if (pcb != NULL || ip_addr_cmp(&inp->ip_addr, &iphdr->dest)) {
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LWIP_DEBUGF(UDP_DEBUG | DBG_TRACE, ("udp_input: calculating checksum\n"));
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pbuf_header(p, UDP_HLEN);
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#ifdef IPv6
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@ -173,30 +177,31 @@ udp_input(struct pbuf *p, struct netif *inp)
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/* Do the UDP Lite checksum */
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#if CHECKSUM_CHECK_UDP
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if (inet_chksum_pseudo(p, (struct ip_addr *)&(iphdr->src),
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(struct ip_addr *)&(iphdr->dest),
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IP_PROTO_UDPLITE, ntohs(udphdr->len)) != 0) {
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LWIP_DEBUGF(UDP_DEBUG | 2, ("udp_input: UDP Lite datagram discarded due to failing checksum\n"));
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UDP_STATS_INC(udp.chkerr);
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UDP_STATS_INC(udp.drop);
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snmp_inc_udpinerrors();
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pbuf_free(p);
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goto end;
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(struct ip_addr *)&(iphdr->dest),
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IP_PROTO_UDPLITE, ntohs(udphdr->len)) != 0) {
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LWIP_DEBUGF(UDP_DEBUG | 2,
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("udp_input: UDP Lite datagram discarded due to failing checksum\n"));
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UDP_STATS_INC(udp.chkerr);
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UDP_STATS_INC(udp.drop);
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snmp_inc_udpinerrors();
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pbuf_free(p);
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goto end;
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}
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#endif
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} else {
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#if CHECKSUM_CHECK_UDP
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if (udphdr->chksum != 0) {
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if (inet_chksum_pseudo(p, (struct ip_addr *)&(iphdr->src),
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(struct ip_addr *)&(iphdr->dest),
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IP_PROTO_UDP, p->tot_len) != 0) {
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LWIP_DEBUGF(UDP_DEBUG | 2, ("udp_input: UDP datagram discarded due to failing checksum\n"));
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UDP_STATS_INC(udp.chkerr);
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UDP_STATS_INC(udp.drop);
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snmp_inc_udpinerrors();
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pbuf_free(p);
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goto end;
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}
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if (inet_chksum_pseudo(p, (struct ip_addr *)&(iphdr->src),
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(struct ip_addr *)&(iphdr->dest),
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IP_PROTO_UDP, p->tot_len) != 0) {
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LWIP_DEBUGF(UDP_DEBUG | 2,
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("udp_input: UDP datagram discarded due to failing checksum\n"));
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UDP_STATS_INC(udp.chkerr);
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UDP_STATS_INC(udp.drop);
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snmp_inc_udpinerrors();
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pbuf_free(p);
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goto end;
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}
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}
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#endif
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}
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@ -205,32 +210,29 @@ udp_input(struct pbuf *p, struct netif *inp)
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snmp_inc_udpindatagrams();
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/* callback */
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if (pcb->recv != NULL)
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{
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pcb->recv(pcb->recv_arg, pcb, p, &(iphdr->src), src);
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}
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} else {
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} else {
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LWIP_DEBUGF(UDP_DEBUG | DBG_TRACE, ("udp_input: not for us.\n"));
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/* No match was found, send ICMP destination port unreachable unless
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destination address was broadcast/multicast. */
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destination address was broadcast/multicast. */
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if (!ip_addr_isbroadcast(&iphdr->dest, inp) &&
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!ip_addr_ismulticast(&iphdr->dest)) {
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/* adjust pbuf pointer */
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p->payload = iphdr;
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icmp_dest_unreach(p, ICMP_DUR_PORT);
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/* adjust pbuf pointer */
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p->payload = iphdr;
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icmp_dest_unreach(p, ICMP_DUR_PORT);
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}
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UDP_STATS_INC(udp.proterr);
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UDP_STATS_INC(udp.drop);
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snmp_inc_udpnoports();
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snmp_inc_udpnoports();
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pbuf_free(p);
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}
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} else {
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pbuf_free(p);
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}
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end:
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end:
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PERF_STOP("udp_input");
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}
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@ -327,15 +329,16 @@ udp_send(struct udp_pcb *pcb, struct pbuf *p)
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}
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/* chain header q in front of given pbuf p */
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pbuf_chain(q, p);
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/* { first pbuf q points to header pbuf } */
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LWIP_DEBUGF(UDP_DEBUG, ("udp_send: added header pbuf %p before given pbuf %p\n", (void *)q, (void *)p));
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/* adding a header within p succeeded */
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/* first pbuf q points to header pbuf */
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LWIP_DEBUGF(UDP_DEBUG,
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("udp_send: added header pbuf %p before given pbuf %p\n", (void *)q, (void *)p));
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/* adding a header within p succeeded */
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} else {
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/* first pbuf q equals given pbuf */
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q = p;
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LWIP_DEBUGF(UDP_DEBUG, ("udp_send: added header in given pbuf %p\n", (void *)p));
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}
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/* { q now represents the packet to be sent } */
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/* q now represents the packet to be sent */
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udphdr = q->payload;
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udphdr->src = htons(pcb->local_port);
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udphdr->dest = htons(pcb->remote_port);
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@ -361,17 +364,17 @@ udp_send(struct udp_pcb *pcb, struct pbuf *p)
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/* calculate checksum */
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#if CHECKSUM_GEN_UDP
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udphdr->chksum = inet_chksum_pseudo(q, src_ip, &(pcb->remote_ip),
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IP_PROTO_UDP, pcb->chksum_len);
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IP_PROTO_UDP, pcb->chksum_len);
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/* chksum zero must become 0xffff, as zero means 'no checksum' */
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if (udphdr->chksum == 0x0000) udphdr->chksum = 0xffff;
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if (udphdr->chksum == 0x0000)
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udphdr->chksum = 0xffff;
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#else
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udphdr->chksum = 0x0000;
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#endif
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/* output to IP */
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LWIP_DEBUGF(UDP_DEBUG, ("udp_send: ip_output_if (,,,,IP_PROTO_UDPLITE,)\n"));
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err = ip_output_if (q, src_ip, &pcb->remote_ip, pcb->ttl, pcb->tos, IP_PROTO_UDPLITE, netif);
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/* UDP */
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} else {
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err = ip_output_if(q, src_ip, &pcb->remote_ip, pcb->ttl, pcb->tos, IP_PROTO_UDPLITE, netif);
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} else { /* UDP */
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LWIP_DEBUGF(UDP_DEBUG, ("udp_send: UDP packet length %"U16_F"\n", q->tot_len));
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udphdr->len = htons(q->tot_len);
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/* calculate checksum */
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@ -395,8 +398,9 @@ udp_send(struct udp_pcb *pcb, struct pbuf *p)
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/* did we chain a seperate header pbuf earlier? */
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if (q != p) {
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/* free the header pbuf */
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pbuf_free(q); q = NULL;
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/* { p is still referenced by the caller, and will live on } */
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pbuf_free(q);
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q = NULL;
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/* p is still referenced by the caller, and will live on */
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}
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UDP_STATS_INC(udp.xmit);
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@ -439,26 +443,28 @@ udp_bind(struct udp_pcb *pcb, struct ip_addr *ipaddr, u16_t port)
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rebind = 1;
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}
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/* this code does not allow upper layer to share a UDP port for
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listening to broadcast or multicast traffic (See SO_REUSE_ADDR and
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SO_REUSE_PORT under *BSD). TODO: See where it fits instead, OR
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combine with implementation of UDP PCB flags. Leon Woestenberg. */
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/* this code does not allow upper layer to share a UDP port for
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listening to broadcast or multicast traffic (See SO_REUSE_ADDR and
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SO_REUSE_PORT under *BSD). TODO: See where it fits instead, OR
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combine with implementation of UDP PCB flags. Leon Woestenberg. */
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#ifdef LWIP_UDP_TODO
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/* port matches that of PCB in list? */
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else if ((ipcb->local_port == port) &&
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/* IP address matches, or one is IP_ADDR_ANY? */
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(ip_addr_isany(&(ipcb->local_ip)) ||
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ip_addr_isany(ipaddr) ||
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ip_addr_cmp(&(ipcb->local_ip), ipaddr))) {
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/* other PCB already binds to this local IP and port */
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LWIP_DEBUGF(UDP_DEBUG, ("udp_bind: local port %"U16_F" already bound by another pcb\n", port));
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return ERR_USE;
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}
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else
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if ((ipcb->local_port == port) &&
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/* IP address matches, or one is IP_ADDR_ANY? */
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(ip_addr_isany(&(ipcb->local_ip)) ||
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ip_addr_isany(ipaddr) ||
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ip_addr_cmp(&(ipcb->local_ip), ipaddr))) {
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/* other PCB already binds to this local IP and port */
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LWIP_DEBUGF(UDP_DEBUG,
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("udp_bind: local port %"U16_F" already bound by another pcb\n", port));
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return ERR_USE;
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}
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#endif
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}
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ip_addr_set(&pcb->local_ip, ipaddr);
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/* no port specified? */
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if (port == 0) {
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#ifndef UDP_LOCAL_PORT_RANGE_START
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@ -487,11 +493,12 @@ udp_bind(struct udp_pcb *pcb, struct ip_addr *ipaddr, u16_t port)
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pcb->next = udp_pcbs;
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udp_pcbs = pcb;
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}
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LWIP_DEBUGF(UDP_DEBUG | DBG_TRACE | DBG_STATE, ("udp_bind: bound to %"U16_F".%"U16_F".%"U16_F".%"U16_F", port %"U16_F"\n",
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(u16_t)(ntohl(pcb->local_ip.addr) >> 24 & 0xff),
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(u16_t)(ntohl(pcb->local_ip.addr) >> 16 & 0xff),
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(u16_t)(ntohl(pcb->local_ip.addr) >> 8 & 0xff),
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(u16_t)(ntohl(pcb->local_ip.addr) & 0xff), pcb->local_port));
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LWIP_DEBUGF(UDP_DEBUG | DBG_TRACE | DBG_STATE,
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("udp_bind: bound to %"U16_F".%"U16_F".%"U16_F".%"U16_F", port %"U16_F"\n",
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(u16_t)(ntohl(pcb->local_ip.addr) >> 24 & 0xff),
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(u16_t)(ntohl(pcb->local_ip.addr) >> 16 & 0xff),
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(u16_t)(ntohl(pcb->local_ip.addr) >> 8 & 0xff),
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(u16_t)(ntohl(pcb->local_ip.addr) & 0xff), pcb->local_port));
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return ERR_OK;
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}
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/**
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@ -529,7 +536,7 @@ udp_connect(struct udp_pcb *pcb, struct ip_addr *ipaddr, u16_t port)
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if ((netif = ip_route(&(pcb->remote_ip))) == NULL) {
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LWIP_DEBUGF(UDP_DEBUG, ("udp_connect: No route to 0x%lx\n", pcb->remote_ip.addr));
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UDP_STATS_INC(udp.rterr);
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UDP_STATS_INC(udp.rterr);
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return ERR_RTE;
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}
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/** TODO: this will bind the udp pcb locally, to the interface which
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@ -540,14 +547,15 @@ udp_connect(struct udp_pcb *pcb, struct ip_addr *ipaddr, u16_t port)
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pcb->local_ip.addr = 0;
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}
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#endif
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LWIP_DEBUGF(UDP_DEBUG | DBG_TRACE | DBG_STATE, ("udp_connect: connected to %"U16_F".%"U16_F".%"U16_F".%"U16_F",port %"U16_F"\n",
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(u16_t)(ntohl(pcb->remote_ip.addr) >> 24 & 0xff),
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(u16_t)(ntohl(pcb->remote_ip.addr) >> 16 & 0xff),
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(u16_t)(ntohl(pcb->remote_ip.addr) >> 8 & 0xff),
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(u16_t)(ntohl(pcb->remote_ip.addr) & 0xff), pcb->remote_port));
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LWIP_DEBUGF(UDP_DEBUG | DBG_TRACE | DBG_STATE,
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("udp_connect: connected to %"U16_F".%"U16_F".%"U16_F".%"U16_F",port %"U16_F"\n",
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(u16_t)(ntohl(pcb->remote_ip.addr) >> 24 & 0xff),
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(u16_t)(ntohl(pcb->remote_ip.addr) >> 16 & 0xff),
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(u16_t)(ntohl(pcb->remote_ip.addr) >> 8 & 0xff),
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(u16_t)(ntohl(pcb->remote_ip.addr) & 0xff), pcb->remote_port));
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/* Insert UDP PCB into the list of active UDP PCBs. */
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for(ipcb = udp_pcbs; ipcb != NULL; ipcb = ipcb->next) {
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for (ipcb = udp_pcbs; ipcb != NULL; ipcb = ipcb->next) {
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if (pcb == ipcb) {
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/* already on the list, just return */
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return ERR_OK;
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@ -571,14 +579,15 @@ udp_disconnect(struct udp_pcb *pcb)
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void
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udp_recv(struct udp_pcb *pcb,
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void (* recv)(void *arg, struct udp_pcb *upcb, struct pbuf *p,
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struct ip_addr *addr, u16_t port),
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void *recv_arg)
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void (* recv)(void *arg, struct udp_pcb *upcb, struct pbuf *p,
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struct ip_addr *addr, u16_t port),
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void *recv_arg)
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{
|
||||
/* remember recv() callback and user data */
|
||||
pcb->recv = recv;
|
||||
pcb->recv_arg = recv_arg;
|
||||
}
|
||||
|
||||
/**
|
||||
* Remove an UDP PCB.
|
||||
*
|
||||
|
|
@ -595,16 +604,18 @@ udp_remove(struct udp_pcb *pcb)
|
|||
if (udp_pcbs == pcb) {
|
||||
/* make list start at 2nd pcb */
|
||||
udp_pcbs = udp_pcbs->next;
|
||||
/* pcb not 1st in list */
|
||||
} else for(pcb2 = udp_pcbs; pcb2 != NULL; pcb2 = pcb2->next) {
|
||||
/* find pcb in udp_pcbs list */
|
||||
if (pcb2->next != NULL && pcb2->next == pcb) {
|
||||
/* remove pcb from list */
|
||||
pcb2->next = pcb->next;
|
||||
/* pcb not 1st in list */
|
||||
} else
|
||||
for (pcb2 = udp_pcbs; pcb2 != NULL; pcb2 = pcb2->next) {
|
||||
/* find pcb in udp_pcbs list */
|
||||
if (pcb2->next != NULL && pcb2->next == pcb) {
|
||||
/* remove pcb from list */
|
||||
pcb2->next = pcb->next;
|
||||
}
|
||||
}
|
||||
}
|
||||
memp_free(MEMP_UDP_PCB, pcb);
|
||||
}
|
||||
|
||||
/**
|
||||
* Create a UDP PCB.
|
||||
*
|
||||
|
|
@ -614,7 +625,8 @@ udp_remove(struct udp_pcb *pcb)
|
|||
* @see udp_remove()
|
||||
*/
|
||||
struct udp_pcb *
|
||||
udp_new(void) {
|
||||
udp_new(void)
|
||||
{
|
||||
struct udp_pcb *pcb;
|
||||
pcb = memp_malloc(MEMP_UDP_PCB);
|
||||
/* could allocate UDP PCB? */
|
||||
|
|
@ -623,8 +635,6 @@ udp_new(void) {
|
|||
memset(pcb, 0, sizeof(struct udp_pcb));
|
||||
pcb->ttl = UDP_TTL;
|
||||
}
|
||||
|
||||
|
||||
return pcb;
|
||||
}
|
||||
|
||||
|
|
@ -635,21 +645,12 @@ udp_debug_print(struct udp_hdr *udphdr)
|
|||
LWIP_DEBUGF(UDP_DEBUG, ("UDP header:\n"));
|
||||
LWIP_DEBUGF(UDP_DEBUG, ("+-------------------------------+\n"));
|
||||
LWIP_DEBUGF(UDP_DEBUG, ("| %5"U16_F" | %5"U16_F" | (src port, dest port)\n",
|
||||
ntohs(udphdr->src), ntohs(udphdr->dest)));
|
||||
ntohs(udphdr->src), ntohs(udphdr->dest)));
|
||||
LWIP_DEBUGF(UDP_DEBUG, ("+-------------------------------+\n"));
|
||||
LWIP_DEBUGF(UDP_DEBUG, ("| %5"U16_F" | 0x%04"X16_F" | (len, chksum)\n",
|
||||
ntohs(udphdr->len), ntohs(udphdr->chksum)));
|
||||
ntohs(udphdr->len), ntohs(udphdr->chksum)));
|
||||
LWIP_DEBUGF(UDP_DEBUG, ("+-------------------------------+\n"));
|
||||
}
|
||||
#endif /* UDP_DEBUG */
|
||||
|
||||
#endif /* LWIP_UDP */
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
||||
|
|
|
|||
Loading…
Reference in New Issue
Block a user