diff options
| author | Arne Schwabe | 2021-12-14 16:09:01 +0100 |
|---|---|---|
| committer | Gert Doering | 2021-12-30 16:35:31 +0100 |
| commit | d4458eed0c3cf582f787893f033a19cb4629cd76 (patch) | |
| tree | 38d8559eaaaaae6cdf8da79848de67f453365af0 /src/openvpn/proto.h | |
| parent | de018b5e93d6a85f39e5e8ecd3c986320fde8a2f (diff) | |
| download | openvpn-d4458eed0c3cf582f787893f033a19cb4629cd76.zip openvpn-d4458eed0c3cf582f787893f033a19cb4629cd76.tar.gz | |
Decouple MSS fix calculation from frame calculation
This consolidates the MSS fix calculation into a single function
instead having it distributed all over the code. It also calculates
the real wire overhead without extra sizes for buffer etc.
Patch v2: improve comment
Signed-off-by: Arne Schwabe <arne@rfc2549.org>
Acked-by: Frank Lichtenheld <frank@lichtenheld.com>
Message-Id: <20211214150901.4118886-1-arne@rfc2549.org>
URL: https://www.mail-archive.com/openvpn-devel@lists.sourceforge.net/msg23423.html
Signed-off-by: Gert Doering <gert@greenie.muc.de>
Diffstat (limited to 'src/openvpn/proto.h')
| -rw-r--r-- | src/openvpn/proto.h | 11 |
1 files changed, 0 insertions, 11 deletions
diff --git a/src/openvpn/proto.h b/src/openvpn/proto.h index f73e50c..94010a9 100644 --- a/src/openvpn/proto.h +++ b/src/openvpn/proto.h @@ -248,17 +248,6 @@ struct ip_tcp_udp_hdr { } /* - * We are in a "liberal" position with respect to MSS, - * i.e. we assume that MSS can be calculated from MTU - * by subtracting out only the IP and TCP header sizes - * without options. - * - * (RFC 879, section 7). - */ -#define MTU_TO_MSS(mtu) (mtu - sizeof(struct openvpn_iphdr) \ - - sizeof(struct openvpn_tcphdr)) - -/* * This returns an ip protocol version of packet inside tun * and offset of IP header (via parameter). */ |