> > I'm talking about the layer below that: Each of those TPDU fragments can > > be further re-fragmented into multiple link layer packets when they're > > actually written to the CAM. Link layer packets can be up to 65535 bytes. > > I suppose I could use knowledge of the fact that the higher layers will > > never send anything more than 2048 bytes to optimise that though. > > I don't know that much about the CI cruft, but IMHO > EN50221 says that link-layer fragments are of the same size > as the pyhsical layer fragement (annex A.3.2), and the > buffer size for the physical layer is negotiated between > the CAM and the host (annex A.2.2.1.1, buffer size negotiation > protocol). The av7110 implementation uses the minimum required > buffer size of 256 bytes (or less, according to negotiation).
Yeah, we're talking about the same thing here: LPDUs. An LPDU is a fragment of a TPDU. However, TPDUs themselves have their own fragmentation system for some reason, which is *different* from the LPDU fragmentation. Klaus is talking about this TPDU fragmentation. Lovely innit? :) -- Info: To unsubscribe send a mail to [EMAIL PROTECTED] with "unsubscribe linux-dvb" as subject.
