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Better fix for bug #35927 (missing refragmentaion in ip_forward) when IP_FRAG is disabled.
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@ -255,17 +255,17 @@ ip_forward(struct pbuf *p, struct ip_hdr *iphdr, struct netif *inp)
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PERF_STOP("ip_forward");
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PERF_STOP("ip_forward");
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/* don't fragment if interface has mtu set to 0 [loopif] */
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/* don't fragment if interface has mtu set to 0 [loopif] */
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if (netif->mtu && (p->tot_len > netif->mtu)) {
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if (netif->mtu && (p->tot_len > netif->mtu)) {
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#if IP_FRAG
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if ((IPH_OFFSET(iphdr) & PP_NTOHS(IP_DF)) == 0) {
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if ((IPH_OFFSET(iphdr) & PP_NTOHS(IP_DF)) == 0) {
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#if IP_FRAG
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ip_frag(p, netif, ip_current_dest_addr());
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ip_frag(p, netif, ip_current_dest_addr());
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#else /* IP_FRAG */
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/* @todo: send ICMP Destination Unreacheable code 13 "Communication administratively prohibited"? */
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#endif /* IP_FRAG */
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} else {
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} else {
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/* send ICMP Destination Unreacheable code 4: "Fragmentation Needed and DF Set" */
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/* send ICMP Destination Unreacheable code 4: "Fragmentation Needed and DF Set" */
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icmp_dest_unreach(p, ICMP_DUR_FRAG);
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icmp_dest_unreach(p, ICMP_DUR_FRAG);
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}
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}
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return;
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return;
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#else /* IP_FRAG */
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/* @todo: send ICMP Destination Unreacheable code 13 "Communication administratively prohibited"? */
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#endif /* IP_FRAG */
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}
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}
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/* transmit pbuf on chosen interface */
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/* transmit pbuf on chosen interface */
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netif->output(netif, p, ip_current_dest_addr());
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netif->output(netif, p, ip_current_dest_addr());
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