diff options
Diffstat (limited to 'tap.c')
| -rw-r--r-- | tap.c | 23 |
1 files changed, 18 insertions, 5 deletions
@@ -219,7 +219,10 @@ static int tap4_handler(struct ctx *c, struct tap_msg *msg, size_t count, iph = (struct iphdr *)(eh + 1); l4h = (char *)iph + iph->ihl * 4; - c->addr4_seen = iph->saddr; + if (c->addr4_seen != iph->saddr) { + c->addr4_seen = iph->saddr; + proto_update_l2_buf(NULL, NULL, &c->addr4_seen); + } msg[i].l4h = l4h; msg[i].l4_len = len - ((intptr_t)l4h - (intptr_t)eh); @@ -332,10 +335,14 @@ static int tap6_handler(struct ctx *c, struct tap_msg *msg, size_t count, msg[i].l4h = l4h; msg[i].l4_len = len - ((intptr_t)l4h - (intptr_t)eh); - if (IN6_IS_ADDR_LINKLOCAL(&ip6h->saddr)) + if (IN6_IS_ADDR_LINKLOCAL(&ip6h->saddr)) { c->addr6_ll_seen = ip6h->saddr; - else + + if (IN6_IS_ADDR_UNSPECIFIED(&c->addr6_seen)) + c->addr6_seen = ip6h->saddr; + } else { c->addr6_seen = ip6h->saddr; + } ip6h->saddr = c->addr6; @@ -458,7 +465,10 @@ static int tap_handler_passt(struct ctx *c, struct timespec *now) while (i < msg_count) { eh = (struct ethhdr *)msg[i].start; - memcpy(c->mac_guest, eh->h_source, ETH_ALEN); + if (memcmp(c->mac_guest, eh->h_source, ETH_ALEN)) { + memcpy(c->mac_guest, eh->h_source, ETH_ALEN); + proto_update_l2_buf(c->mac_guest, NULL, NULL); + } switch (ntohs(eh->h_proto)) { case ETH_P_ARP: @@ -516,7 +526,10 @@ static int tap_handler_pasta(struct ctx *c, struct timespec *now) pcap(msg.start, msg.len); - memcpy(c->mac_guest, eh->h_source, ETH_ALEN); + if (memcmp(c->mac_guest, eh->h_source, ETH_ALEN)) { + memcpy(c->mac_guest, eh->h_source, ETH_ALEN); + proto_update_l2_buf(c->mac_guest, NULL, NULL); + } switch (ntohs(eh->h_proto)) { case ETH_P_ARP: |