diff options
| author | Tom Gundersen <teg@jklm.no> | 2015-06-24 21:22:46 +0200 |
|---|---|---|
| committer | Tom Gundersen <teg@jklm.no> | 2015-07-14 12:03:04 +0200 |
| commit | a0166609f782da91710dea9183d1bf138538db37 (patch) | |
| tree | 766e80f1d02801a548faafb98f4c4148198e51f6 /src/resolve/resolved-dns-packet.c | |
| parent | ff89f8b917a83a3fc0dc3ad0961c3bc953f78e8f (diff) | |
resolved: packet - ensure there is space for IP+UDP headers
Currently we only make sure our links can handle the size of the payload witohut
taking the headers into account.
Diffstat (limited to 'src/resolve/resolved-dns-packet.c')
| -rw-r--r-- | src/resolve/resolved-dns-packet.c | 4 |
1 files changed, 2 insertions, 2 deletions
diff --git a/src/resolve/resolved-dns-packet.c b/src/resolve/resolved-dns-packet.c index fa0516f8a0..a9cc5ca6aa 100644 --- a/src/resolve/resolved-dns-packet.c +++ b/src/resolve/resolved-dns-packet.c @@ -32,10 +32,10 @@ int dns_packet_new(DnsPacket **ret, DnsProtocol protocol, size_t mtu) { assert(ret); - if (mtu <= 0) + if (mtu <= UDP_PACKET_HEADER_SIZE) a = DNS_PACKET_SIZE_START; else - a = mtu; + a = mtu - UDP_PACKET_HEADER_SIZE; if (a < DNS_PACKET_HEADER_SIZE) a = DNS_PACKET_HEADER_SIZE; |