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ip6: clone the buf when forwarding a PBUF_REF packet

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Xu Si Yu
2025-01-21 11:53:28 +08:00
parent 0a44efa10f
commit adcd330ee1
1 changed files with 13 additions and 1 deletions
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src/core/ipv6/ip6.c
+13 -1
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@@ -465,7 +465,19 @@ ip6_forward(struct pbuf *p, struct ip6_hdr *iphdr, struct netif *inp)
IP6_ADDR_BLOCK8(ip6_current_dest_addr())));
/* transmit pbuf on chosen interface */
netif->output_ip6(netif, p, ip6_current_dest_addr());
if (p->type_internal == PBUF_REF) {
struct pbuf *q = pbuf_clone(PBUF_LINK, PBUF_RAM, p);
if (q != NULL) {
netif->output_ip6(netif, q, ip6_current_dest_addr());
pbuf_free(q);
} else {
IP6_STATS_INC(ip6.drop);
}
} else {
netif->output_ip6(netif, p, ip6_current_dest_addr());
}
IP6_STATS_INC(ip6.fw);
IP6_STATS_INC(ip6.xmit);
return;