- struct lib_ring_buffer_backend *bufb = &ctx->buf->backend;
- struct channel_backend *chanb = &ctx->chan->backend;
- size_t sbidx, offset = ctx->buf_offset;
+ struct lib_ring_buffer_backend *bufb = &ctx->priv.buf->backend;
+ struct channel_backend *chanb = &ctx->priv.chan->backend;
+ size_t sbidx, offset = ctx->priv.buf_offset;