diff options
| author | Daniel Mack <daniel@zonque.org> | 2015-12-09 12:01:08 +0100 |
|---|---|---|
| committer | Daniel Mack <daniel@zonque.org> | 2015-12-10 10:20:54 +0100 |
| commit | 9c491563837983385bf9fa244590e76e142f4fa3 (patch) | |
| tree | 6f356f7750cb900957e475264697a2612507b513 | |
| parent | dbfbb6e776d613cb9be76d13de076d08450c9d29 (diff) | |
resolved: add support for linked packets
For mDNS, we need to support the TC bit in case the list of known answers
exceed the maximum packet size.
For this, add a 'more' pointer to DnsPacket for an additional packet.
When a packet is unref'ed, the ->more packet is also unrefed, so it
sufficient to only keep track of the 1st packet in a chain.
| -rw-r--r-- | src/resolve/resolved-dns-packet.c | 3 | ||||
| -rw-r--r-- | src/resolve/resolved-dns-packet.h | 3 |
2 files changed, 6 insertions, 0 deletions
diff --git a/src/resolve/resolved-dns-packet.c b/src/resolve/resolved-dns-packet.c index e5de5a1cd6..f753b3522f 100644 --- a/src/resolve/resolved-dns-packet.c +++ b/src/resolve/resolved-dns-packet.c @@ -170,6 +170,9 @@ DnsPacket *dns_packet_unref(DnsPacket *p) { assert(p->n_ref > 0); + if (p->more) + dns_packet_unref(p->more); + if (p->n_ref == 1) dns_packet_free(p); else diff --git a/src/resolve/resolved-dns-packet.h b/src/resolve/resolved-dns-packet.h index 405838e60d..3d84cb622b 100644 --- a/src/resolve/resolved-dns-packet.h +++ b/src/resolve/resolved-dns-packet.h @@ -88,6 +88,9 @@ struct DnsPacket { uint16_t sender_port, destination_port; uint32_t ttl; + /* For support of truncated packets */ + DnsPacket *more; + bool on_stack:1; bool extracted:1; bool refuse_compression:1; |