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fixeria has posted comments on this change. ( https://gerrit.osmocom.org/c/osmo-pcu/+/35318?usp=email )

Change subject: pcu_l1_if: signal BTS model via PCUIF ......................................................................

Patch Set 1:

(1 comment)

Patchset:

PS1:

This patch breaks compatibility with osmo-bts v1.7.1 (current latest tag). […]

Even if we make osmo-pcu v1.4.0 compatible with osmo-bts v1.7.1 and osmo-bsc v1.11.0 by lifting the primitive size checking, this would still be pretty useless because we **need to know the BTS type** in order for dummy block generation to work properly (https://gerrit.osmocom.org/c/osmo-pcu/+/35319).

I think we would have to:

* tag patch releases for both osmo-bts and osmo-bsc, so that both of them would speak the PCUIFv12 and indicate a BTS type to osmo-pcu; * either drop backwards compatibility with PCUIFv < 12 (see https://cgit.osmocom.org/osmo-pcu/commit/?id=46140948d9800bca6a7b4299f08b25e...), or keep it compatible with v10 and v11, but carefully check that it can actually work with v10 and v12.